dhcp-probe-1.3.0/0000755000175100017510000000000011171030213013555 5ustar metro-gimetro-gidhcp-probe-1.3.0/config.h.in0000644000175100017510000002137311164405072015621 0ustar metro-gimetro-gi/* config.h.in. Generated from configure.ac by autoheader. */ /* Define to 1 if you have the header file. */ #undef HAVE_ARPA_INET_H /* Define to 1 if you have the `bcmp' function. */ #undef HAVE_BCMP /* Define to 1 if you have the `bcopy' function. */ #undef HAVE_BCOPY /* Define to 1 if you have the `bzero' function. */ #undef HAVE_BZERO /* Define to 1 if you have the header file. */ #undef HAVE_CTYPE_H /* Define to 1 if you have the declaration of `ether_aton', and to 0 if you don't. */ #undef HAVE_DECL_ETHER_ATON /* Define to 1 if you have the declaration of `ether_hostton', and to 0 if you don't. */ #undef HAVE_DECL_ETHER_HOSTTON /* Define to 1 if you have the declaration of `ether_ntoa', and to 0 if you don't. */ #undef HAVE_DECL_ETHER_NTOA /* Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you don't. */ #undef HAVE_DECL_ETHER_NTOHOST /* Define to 1 if you have the header file. */ #undef HAVE_ERRNO_H /* Define to 1 if you have the header file. */ #undef HAVE_FCNTL_H /* Define to 1 if you have the `getifaddrs' function. */ #undef HAVE_GETIFADDRS /* Define to 1 if you have the `getrlimit' function. */ #undef HAVE_GETRLIMIT /* Define to 1 if you have the header file. */ #undef HAVE_IFADDRS_H /* Define to 1 if you have the `inet_aton' function. */ #undef HAVE_INET_ATON /* Define the following if the inet_aton() function prototype is in */ #undef HAVE_INET_ATON_PROTO /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if you have the `net' library (-lnet). */ #undef HAVE_LIBNET /* Define to 1 if you have the header file. */ #undef HAVE_LIBNET_H /* Define to 1 if you have the `nsl' library (-lnsl). */ #undef HAVE_LIBNSL /* Define to 1 if you have the `pcap' library (-lpcap). */ #undef HAVE_LIBPCAP /* Define to 1 if you have the `socket' library (-lsocket). */ #undef HAVE_LIBSOCKET /* Define to 1 if you have the header file. */ #undef HAVE_MEMORY_H /* Define to 1 if you have the `my_null_proc' function. */ #undef HAVE_MY_NULL_PROC /* Define to 1 if you have the header file. */ #undef HAVE_NETDB_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_ETHER_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IF_ETHER_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IN_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IN_SYSTM_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IP_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_UDP_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_ARP_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_DL_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_IF_H /* Define to 1 if you have the header file. */ #undef HAVE_PCAP_H /* Define to 1 if you have the header file. */ #undef HAVE_PTHREAD_H /* Define to 1 if you have the header file. */ #undef HAVE_SIGNAL_H /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDIO_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H /* Define to 1 if you have the `strerror' function. */ #undef HAVE_STRERROR /* Define the following if strerror() is declared */ #undef HAVE_STRERROR_PROTO /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H /* Define to 1 if you have the header file. */ #undef HAVE_STRING_H /* Define to 1 if you have the header file. */ #undef HAVE_STROPTS_H /* Define to 1 if you have the `sysconf' function. */ #undef HAVE_SYSCONF /* Define to 1 if you have the header file. */ #undef HAVE_SYSLOG_H /* Define the following if sys_errlist exists */ #undef HAVE_SYS_ERRLIST /* Define the following if sys_nerr is declared */ #undef HAVE_SYS_ERRLIST_DECL /* Define to 1 if you have the header file. */ #undef HAVE_SYS_FILE_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_FILIO_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_IOCTL_H /* Define the following if sys_nerr exists */ #undef HAVE_SYS_NERR /* Define the following if sys_nerr is declared */ #undef HAVE_SYS_NERR_DECL /* Define to 1 if you have the header file. */ #undef HAVE_SYS_RESOURCE_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SELECT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKET_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKIO_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TIME_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_UIO_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_UN_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_WAIT_H /* Define to 1 if you have the header file. */ #undef HAVE_TIME_H /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H /* Define to 1 if you have the `vsnprintf' function. */ #undef HAVE_VSNPRINTF /* Name of package */ #undef PACKAGE /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the version of this package. */ #undef PACKAGE_VERSION /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS /* Define if struct arpreq{} has an arp_dev member */ #undef STRUCT_ARPREQ_HAS_ARP_DEV /* Define if struct ether_addr{} has an ether_addr_octet member */ #undef STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET /* Define if struct ether_addr{} has an octet member */ #undef STRUCT_ETHER_ADDR_HAS_OCTET /* Define if struct sockaddr{} has a sa_len member */ #undef STRUCT_SOCKADDR_HAS_SA_LEN /* Define if STREAMS ioctls should be used on socket descriptors, instead of SIOCxxx ioctls */ #undef SYS_SOCKET_IOCTLS_USE_STREAMS /* Define to 1 if you can safely include both and . */ #undef TIME_WITH_SYS_TIME /* Define to 1 if your declares `struct tm'. */ #undef TM_IN_SYS_TIME /* Version number of package */ #undef VERSION /* Define for Solaris 2.5.1 so the uint32_t typedef from , , or is not used. If the typedef were allowed, the #define below would cause a syntax error. */ #undef _UINT32_T /* Define for Solaris 2.5.1 so the uint64_t typedef from , , or is not used. If the typedef were allowed, the #define below would cause a syntax error. */ #undef _UINT64_T /* Define for Solaris 2.5.1 so the uint8_t typedef from , , or is not used. If the typedef were allowed, the #define below would cause a syntax error. */ #undef _UINT8_T /* Define to the type of a signed integer type of width exactly 16 bits if such a type exists and the standard includes do not define it. */ #undef int16_t /* Define to the type of a signed integer type of width exactly 32 bits if such a type exists and the standard includes do not define it. */ #undef int32_t /* Define to the type of a signed integer type of width exactly 64 bits if such a type exists and the standard includes do not define it. */ #undef int64_t /* Define to the type of a signed integer type of width exactly 8 bits if such a type exists and the standard includes do not define it. */ #undef int8_t /* Define to the type of an unsigned integer type of width exactly 16 bits if such a type exists and the standard includes do not define it. */ #undef uint16_t /* Define to the type of an unsigned integer type of width exactly 32 bits if such a type exists and the standard includes do not define it. */ #undef uint32_t /* Define to the type of an unsigned integer type of width exactly 64 bits if such a type exists and the standard includes do not define it. */ #undef uint64_t /* Define to the type of an unsigned integer type of width exactly 8 bits if such a type exists and the standard includes do not define it. */ #undef uint8_t dhcp-probe-1.3.0/src/0000755000175100017510000000000011165121742014357 5ustar metro-gimetro-gidhcp-probe-1.3.0/src/get_myeaddr.h0000644000175100017510000000026611164405072017020 0ustar metro-gimetro-gi#ifndef GET_MYEADDR_H #define GET_MYEADDR_H int get_myeaddr(int sockfd, struct in_addr *my_ipaddr, struct ether_addr *my_eaddr, const char *ifname); #endif /* not GET_MYEADDR_H */ dhcp-probe-1.3.0/src/configfile.h0000644000175100017510000000125311164405072016636 0ustar metro-gimetro-gi#ifndef CONFIGFILE_H #define CONFIGFILE_H /* (re)read the configuration file */ int read_configfile(const char *fname); /* accessor functions for all the configuration file data */ struct ether_addr * GetChaddr (void); struct ether_addr * GetEther_src (void); struct in_addr * GetClient_ip_address(void); struct in_addr * GetServer_id(void); unsigned GetCycle_time(void); int GetResponse_wait_time(void); int isLegalServersMember(struct in_addr *ipaddr); int isLegalServerEthersrcsMember(struct ether_addr *eaddr); int isInLeaseNetworksOfConcern(struct in_addr *ipaddr); char * GetAlert_program_name(void); char * GetAlert_program_name2(void); #endif /* not CONFIGFILE_H */ dhcp-probe-1.3.0/src/utils.h0000644000175100017510000000030111164405072015662 0ustar metro-gimetro-gi#ifndef UTILS_H #define UTILS_H #include FILE *open_for_writing(char *filename); FILE *open_append(char *filename); void *smalloc(size_t size, int init); #endif /* not UTILS_H */ dhcp-probe-1.3.0/src/report.c0000644000175100017510000001446011164405072016043 0ustar metro-gimetro-gi/* Routines associated with reporting/logging messages: report_init() report() close_and_reopen_log_file() get_errmsg() */ /* This is based on report.c from Carnegie Mellon University (CMU) dhcpd 3.3.7. As a result, it is subject to copyright, see the COPYING file for details. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "defaults.h" #include "dhcp_probe.h" #include "report.h" #include "utils.h" #ifndef LOG_NDELAY #define LOG_NDELAY 0 #endif #ifndef LOG_DAEMON #define LOG_DAEMON 0 #endif extern int debug; extern char *prog; static const char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; /* These are initialized so you get only stderr until you call report_init() */ static int use_stderr = 1; static int use_syslog = 0; static int use_logfile = 0; static FILE *logfile; /* only used if we use a logfile */ void report_init(int dont_fork, char *logfile_name) { /* Call this once before using the the report() function. Set dont_fork to true if the daemon is not forking. Set logfile_name to the log file (fully-qualified pathname) or NULL. If dont_fork is set, we log to stderr, and ignore any logfile_name. If dont_fork is unset, we log to logfile_name if that's set, else to syslog(). */ if (dont_fork) { use_stderr = 1; use_syslog = 0; use_logfile = 0; } else { use_stderr = 0; if (logfile_name) { use_syslog = 0; use_logfile = 1; } else { use_syslog = 1; use_logfile = 0; } } if (use_syslog) { openlog(prog, LOG_PID | LOG_NDELAY, LOG_FACILITY); } if (use_logfile) { /* Because open_append() might call report(), we must reset logging to use just stderr for the duration of this call, to avoid using logfile before it is ready. (The messages it passes to report() may still get lost if stderr has been closed.) Then we restore logging afterwards. */ int save_use_logfile, save_use_stderr; /* save */ save_use_logfile = use_logfile; save_use_stderr = use_stderr; use_logfile = 0; use_stderr = 1; if ((logfile = open_append(logfile_name)) == NULL) { /* We can't use report() to report this error, and stderr may be closed. At least we can call syslog directly, so it hopefully this logged somewhere. */ syslog(LOG_ERR, "%s: report_init(): error opening logfile %s\n", prog, logfile_name); my_exit(1, 1, 1); } /* restore */ use_logfile = save_use_logfile; use_stderr = save_use_stderr; /* log file should be line buffered to avoid lengthy delays in logging */ setvbuf(logfile, NULL, _IOLBF, 0); } } void close_and_reopen_log_file(char *logfile_name) { /* Close and reopen logfile. If we are not logging to a logfile, return silently. Returns on success, exits on error. */ if (use_logfile) { if (debug > 1) report(LOG_NOTICE, "closing logfile"); if (fclose(logfile) < 0) { /* We can't use report() to report this error, and stderr may be closed. At least we can call syslog directly, so it hopefully this logged somewhere. */ syslog(LOG_ERR, "%s: close_and_reopen_log_file(): error closing logfile\n", prog); my_exit(1, 1, 1); } if ((logfile = open_append(logfile_name)) == NULL) { /* We can't use report() to report this error, and stderr may be closed. At least we can call syslog directly, so it hopefully this logged somewhere. */ syslog(LOG_ERR, "%s: close_and_reopen_log_file(): can't open logfile %s\n", prog, logfile_name); my_exit(1, 1, 1); } /* log file should be line buffered to avoid lengthy delays in logging */ setvbuf(logfile, NULL, _IOLBF, 0); if (debug > 1) report(LOG_NOTICE, "re-opened logfile"); } return; } static char *levelnames[] = { #ifdef LOG_SALERT "level: ", "alert: ", "alert: ", "emerg: ", "error: ", "crit: ", "warn: ", "note: ", "info: ", "debug: ", "unknownlevel: " #else /* not LOG_SALERT */ "emerg: ", "alert: ", "crit: ", "error: ", "warn: ", "note: ", "info: ", "debug: ", "unknownlevel: " #endif /* not LOG_SALERT */ }; static int numlevels = sizeof(levelnames) / sizeof(levelnames[0]); #ifdef STDC_HEADERS void report(int priority, char *fmt,...) #else /* not STDC_HEADERS */ /*VARARGS2*/ void report(priority, fmt, va_alist) int priority; char *fmt; va_dcl #endif /* not STDC_HEADERS */ { /* Report errors and such via stderr and syslog() and logfile if appropriate. It just helps avoid a lot of "#ifdef SYSLOG" constructs from being scattered throughout the code. The syntax is identical to syslog(3), but %m is not considered special for output to stderr (i.e. you'll see "%m" in the output. . .). Also, control strings should normally end with \n since newlines aren't automatically generated for stderr and logfile output (whereas syslog strips out all newlines and adds its own at the end). */ va_list ap; static char buf[256]; if ((priority < 0) || (priority >= numlevels)) { priority = numlevels - 1; } #ifdef STDC_HEADERS va_start(ap, fmt); #else va_start(ap); #endif #ifdef HAVE_VSNPRINTF vsnprintf(buf, sizeof(buf), fmt, ap); #else vsprintf(buf, fmt, ap); #endif /* not HAVE_VSNPRINTF */ va_end(ap); /* * Print the message */ if (use_stderr) /* omit program name and timestamp, add priority level */ fprintf(stderr, "%s %s\n", levelnames[priority], buf); if (use_syslog) /* sylog prepends its own timestamp and the program name we set in 'openlog' */ syslog((priority | LOG_FACILITY), "%s", buf); if (use_logfile) { /* omit program name, add priority level and timestamp */ char time_buf[256]; struct timeval tv; struct tm *local_tm = NULL; /* retrieve current local time and format it */ time_buf[0] = '\0'; /* so we can safely print it even if we fail to set it */ if (gettimeofday(&tv, NULL) < 0) { /* we can't report error since we're already in report() */ } else { local_tm = localtime((time_t *) &tv.tv_sec); } if (local_tm != NULL) { sprintf(time_buf, "%02d-%s-%4d %02d:%02d:%02d ", local_tm->tm_mday, months[local_tm->tm_mon], local_tm->tm_year+1900, local_tm->tm_hour, local_tm->tm_min, local_tm->tm_sec); } fprintf(logfile, "%s%s %s\n", time_buf, levelnames[priority], buf); } } char * get_errmsg() { /* Return pointer to static string which gives full filesystem error message. */ extern int errno; extern char *strerror(); return strerror(errno); } dhcp-probe-1.3.0/src/daemonize.h0000644000175100017510000000013511164405072016502 0ustar metro-gimetro-gi#ifndef DAEMONIZE_H #define DAEMONIZE_H void daemonize(void); #endif /* not DAEMONIZE_H */ dhcp-probe-1.3.0/src/defs.h0000644000175100017510000000764711164405072015467 0ustar metro-gimetro-gi#ifndef DEFS_H #define DEFS_H #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #ifdef HAVE_SYSLOG_H #include #endif #ifdef HAVE_STRING_H #include #endif #ifdef STDC_HEADERS #include #else #include #endif #ifdef HAVE_INTTYPES_H # include #elif defined(HAVE_STDINT_H) # include #endif #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ #include #endif #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_SYS_SOCKIO_H #include #endif #if TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif #include #ifdef HAVE_UNISTD_H #include #endif #include #ifdef HAVE_NET_IF_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif /* To get declarations of ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton() on Solaris 10, we need sys/ethernet.h. But it's not a good idea to include sys/ethernet.h directly; while that would work in Solaris 10, it would break in Solaris 9 if we ever find we need to include netinet/if_ether; in Solaris 9 you must not include BOTH netinet/if_ether.h and sys/ethernet.h, since there are some definitions duplicated in the two files. Fortunately, on Solaris 10, netinet/if_ether.h includes sys/ethernet.h for you, ultimately getting the ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton() declarations we want. So the result is that on Solaris 9, by including netinet/if_ether.h we avoid a potential future conflict and we don't get ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(), but those four declarations aren't available in Solaris 9 anyway. And in Solaris 10, we get ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(). */ #ifdef HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. We already have both above. */ #include #endif #ifdef HAVE_NETINET_ETHER_H /* ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton() are declared in netinet/ether.h on Redhat 9. */ #include #endif #include /* for n_long def used by netinet/ip.h */ /* In Linux, use the BSD flavor IP structure headers instead of the Linux flavor headers. */ #ifndef __FAVOR_BSD #define __FAVOR_BSD 1 #endif #ifdef HAVE_NETINET_IP_H #include #endif #include #ifdef HAVE_ARPA_INET_H #include #endif #ifdef HAVE_NET_IF_ARP_H #include #endif #ifndef HAVE_INET_ATON_PROTO # include # include extern int inet_aton(const char *, struct in_addr *); #endif /* not HAVE_INET_ATON_PROTO */ #ifdef HAVE_SYS_RESOURCE_H #include #endif #include /* libpcap */ #include /* libnet */ #ifndef HAVE_BCOPY #define bcopy(a, b, c) memcpy(b, a, c) #endif #ifndef HAVE_BCMP #define bcmp(a, b, c) memcmp(a, b, c) #endif #ifndef HAVE_BZERO #define bzero(s, n) memset((s), 0, (n)) #endif #ifdef HAVE_SIGNAL_SYSV #define signal(s,f) sigset(s,f) #endif #define PASTE(a,b) a ## b /* Prototypes for these routines are missing from some systems. */ #if !HAVE_DECL_ETHER_NTOA extern char *ether_ntoa (const struct ether_addr *e); #endif #if !HAVE_DECL_ETHER_ATON extern struct ether_addr *ether_aton(const char *hostname); #endif #if !HAVE_DECL_ETHER_NTOHOST extern int ether_ntohost (char *hostname, const struct ether_addr *e); #endif #if !HAVE_DECL_ETHER_HOSTTON extern int ether_hostton (const char *hostname, struct ether_addr *e); #endif #endif /* not DEFS_H */ dhcp-probe-1.3.0/src/open_max.h0000644000175100017510000000013111164405072016331 0ustar metro-gimetro-gi#ifndef OPEN_MAX_H #define OPEN_MAX_H long open_max(void); #endif /* not OPEN_MAX_H */ dhcp-probe-1.3.0/src/daemonize.c0000644000175100017510000000303411164405072016476 0ustar metro-gimetro-gi/* Daemonize correctly. Based closely on daemon_init() from "UNIX Network Programming: Volume 1", Second Edition, by W. Richard Stevens. That sample code is available via ftp://ftp.kohala.com/pub/rstevens/unpv12e.tar.gz. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "daemonize.h" #include "report.h" #include "open_max.h" void daemonize(void) { int i; pid_t pid; struct sigaction sa; if ((pid = fork()) < 0) { report(LOG_ERR, "fork: %s", get_errmsg()); report(LOG_NOTICE, "exiting"); exit(1); } else if (pid != 0) exit(0); /* parent terminates */ /* first child continues */ setsid(); /* become a session leader */ /* ignore HUP we will receive when session leader (first child) terminates */ sigemptyset(&sa.sa_mask); sa.sa_handler = SIG_IGN; if (sigaction(SIGHUP, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); report(LOG_NOTICE, "exiting"); exit(1); } if ((pid = fork()) < 0) { report(LOG_ERR, "fork: %s", get_errmsg()); report(LOG_NOTICE, "exiting"); exit(1); } else if (pid != 0) exit(0); /* first child terminates */ /* second child continues */ /* We take care of the chdir in the main program chdir("/"); */ /* We'll allow ourself to inherit the file mode creation mask umask(0); */ /* Close inherited descriptors. There is no portable way to determine what descriptors were inherited. so we'll instead try to close all descriptors up to some maximum value. */ for (i = 0; i < open_max(); i++) close(i); return; } dhcp-probe-1.3.0/src/defaults.h0000644000175100017510000000540011164405072016336 0ustar metro-gimetro-gi#ifndef DEFAULTS_H_ #define DEFAULTS_H_ /* Default values. You may edit this file before running 'make' to change these defaults and enable/disable some features. */ /**********************************************************************/ /* You may want to change these, since you can't override them from */ /* the commandline nor the configuration file. */ /* If we log via syslog, what facility name should we use? See syslog(3) for other possible facility names. This value is not used if we log to a logfile. */ #define LOG_FACILITY LOG_DAEMON /* Size of arrays for multiply-occurring values in the configuration file. If you need to specify more values, increase these sizes. */ #define MAX_LEGAL_SERVERS 64 #define MAX_LEASE_NETWORKS_OF_CONCERN 128 #define MAX_LEGAL_SERVER_ETHERSRCS 64 /* transaction ID field in bootp header */ #define BOOTP_XID 0x19970112 /* When pcap_open_live() fails, number of times to retry before giving up. Should fit into an int. */ #define PCAP_OPEN_LIVE_RETRY_MAX 10 /* When pcap_open_live() fails, number of seconds to sleep before retrying. Should fit into an unsigned int. */ #define PCAP_OPEN_LIVE_RETRY_DELAY 1 /**********************************************************************/ /* Unless you are doing server development, leave these alone. */ /**********************************************************************/ /* You probably shouldn't need to change any of these, since you may */ /* override each of them from the config file. */ /* ip address, specified as a string constant */ #define SERVER_ID "10.254.254.254" /* ip address, specified as a string constant */ #define CLIENT_IP_ADDRESS "172.31.254.254" /* milliseconds, must fit into an int */ #define RESPONSE_WAIT_TIME 5000 /* seconds, must fit into an unsigned int */ #define CYCLE_TIME 300 /**********************************************************************/ /* You probably shouldn't need to change any of these, since you may */ /* override each of them from the commandline. */ /* Absolute path to pidfile */ #define PID_FILE "/var/run/dhcp_probe.pid" /* Absolute path to config file */ #define CONFIG_FILE "/etc/dhcp_probe.cf" /* Absolute path to current working directory */ #define CWD "/" /* Size of buffer (in bytes) to capture *all* responses to a single packet. Must fit into an 'int' */ #define CAPTURE_BUFSIZE (20 * 1514) /* Sometimes use when allocating miscellaneous strings */ #define STR_MAXLEN 1024 /**********************************************************************/ /* You shouldn't need to change any of these, since you may */ /* override each of them from the config file. */ #endif /* not DEFAULTS_H_ */ dhcp-probe-1.3.0/src/utils.c0000644000175100017510000001101011164405072015654 0ustar metro-gimetro-gi/* Miscellaneous utilities: open_for_writing() smalloc() open_append() */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include /* for fdopen */ #include /* for stat, open*/ #include #include #include #ifdef HAVE_UNISTD_H #include /* for setuid/seteuid/setgid/setegid, unlink */ #endif #ifdef HAVE_FCNTL_H #include /* for open */ #else /* not HAVE_FCNTL_H */ #ifdef HAVE_SYS_FILE_H #include /* for open, O_ constants defined here on BSD systems */ #endif /* HAVE_SYS_FILE_H */ #endif /* not HAVE_FCNTL_H */ #include /* for stat, open */ #include "dhcp_probe.h" #include "utils.h" #include "report.h" FILE * open_for_writing(char * filename) { /* Open a regular file for writing. If the file already exists, it will be removed first. On error we return NULL and log an error message. Based closely on write_open() from BIND 8.1.2. */ int fd; FILE *stream; struct stat stat_buffer; if (stat(filename, &stat_buffer) < 0) { if (errno != ENOENT) { report(LOG_ERR, "open_for_writing(): stat of %s failed: %s", filename, get_errmsg()); return NULL; } } else { /* filename already exists */ if (!(stat_buffer.st_mode & S_IFREG)) { /* since we just want to open a regular file for writing, its existance as a special file probably means something is wrong, so let's TRY to avoid removing it. */ report(LOG_ERR, "open_for_writing(): %s exists but isn't a regular file", filename); return(NULL); } } /* At this point, filename either does not exist, or already exists as a regular file. Either way, it's toast. Note that it is possible for it's status to have changed since we checked earlier; e.g. it may have changed from non-existance to existance as a special file. So it's still possible we'll wipe out a special file, but we've made an effort to avoid it. */ if (unlink(filename) < 0) { if (errno != ENOENT) { report(LOG_ERR, "open_for_writing(): unlink of %s failed: %s", filename, get_errmsg()); return NULL; } } /* Use open() to get the atomic behavior provided by O_CREAT|O_EXCL. If it succeeds, convert the file descriptor into a file stream, which is what we're supposed to return. */ fd = open(filename, O_WRONLY|O_CREAT|O_EXCL, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); if (fd < 0) { report(LOG_ERR, "open_for_writing(): open of %s failed: %s", filename, get_errmsg()); return NULL; } stream = fdopen(fd, "w"); if (stream == NULL) { report(LOG_ERR, "open_for_writing(): fdopen failed: %s", get_errmsg()); (void) close(fd); return NULL; } return(stream); } void * smalloc(size_t size, int init) { /* safe malloc() Always returns a valid pointer (if it returns at all). The allocated memory is initialized to all zeros if 'init' is non-zero. If malloc() returns an error, a message is printed using the report() function and the program aborts with a status of 1. */ void *rc; rc = malloc(size); if (!rc) { report(LOG_ERR, "malloc() failed"); my_exit(1, 1, 1); } if (init) bzero((char *) rc, size); return rc; } FILE * open_append(char *filename) { /* Open a regular file for appending. If the file does not exist, it will be created. On error we return NULL and log an error message. (Note that if logging is going to the same file we are trying to open, the error message may be lost.) Based closely on write_open() from BIND 8.1.2. */ int fd; FILE *stream; struct stat stat_buffer; fd = open(filename, O_WRONLY|O_APPEND|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); if (fd < 0) { report(LOG_ERR, "open_append(): open of %s failed: %s", filename, get_errmsg()); return NULL; } /* Verify that the file (if it already exists) is a regular file. We do this after the open to avoid a race condition. */ if (stat(filename, &stat_buffer) < 0) { if (errno != ENOENT) { close(fd); report(LOG_ERR, "open_append(): stat of %s failed; %s", filename, get_errmsg()); return NULL; } } else { /* filename already exists */ if (!(stat_buffer.st_mode & S_IFREG)) { /* since we just want to open a regular file for appending, its existance as a special file probably means something is wrong, so let's TRY to avoid stepping on it. */ close(fd); report(LOG_ERR, "open_append(): %s exists but isn't a regular file", filename); return NULL; } } stream = fdopen(fd, "a"); if (stream == NULL) { report(LOG_ERR, "open_append(): fdopen failed: %s", get_errmsg()); close(fd); return NULL; } return stream; } dhcp-probe-1.3.0/src/dhcp_probe.h0000644000175100017510000000367311164405072016646 0ustar metro-gimetro-gi#ifndef DHCPPROBE_H #define DHCPPROBE_H #include "defaults.h" /* options, etc */ extern char *prog; extern char *logfile_name; extern char *pid_file; extern int debug; extern int dont_fork; extern char *capture_file; extern int snaplen; extern char *ifname; extern int use_8021q; extern int vlan_id; extern int sockfd; /* general purpose datagram socket fd for temp use throughout */ extern struct ether_addr my_eaddr; /* What flavor of DHCP or BootP packet to send? */ /* We construct the packets and insert them into a libnet context queue in the order they appear below. When we ask libnet to walk the queue in order, it seems to return them in reverse order, as if it were a LIFO stack. So we list the flavors below in the reverse of the order we actually wish to send them. */ enum dhcp_flavor_t { DHCP_REBINDING = 0, /* send DHCPREQUEST, client in REBINDING state */ DHCP_INIT_REBOOT, /* send DHCPREQUEST, client in INIT-REBOOT state */ DHCP_SELECTING, /* send DHCPREQUEST, client in SELECTING state */ BOOTP, /* send BOOTPREQUEST */ DHCP_INIT /* send DHCPDISCOVER */ }; #define NUM_FLAVORS 5 /* A width at least large enough for a string that will contain the string version of the number NUM_FLAVORS */ #define NUM_FLAVORS_MAXSTRING (NUM_FLAVORS + 2) /* An array listing all the valid packet flavors */ extern enum dhcp_flavor_t packet_flavors[]; /* forward decls for functions */ void process_response(u_char *user, const struct pcap_pkthdr *pkthdr, const u_char *packet); void set_pcap_timeout(pcap_t *pc); void reconfigure(const int write_packet_len); void catcher(int signal); void cleanup(void); void my_exit(int exit_status, int do_cleanup, int do_log); void usage(void); void close_and_reopen_capture_file(void); enum { MAX_ETHER_ADDR_STR = 18 }; enum { MAX_IP_ADDR_STR = 18 }; #define VLAN_ID_MIN 0 #define VLAN_ID_MAX 4095 #define VLAN_PRIORITY 0x0 #define VLAN_CFI_FLAG 0x0 #endif /* not DCHPPROBE_H */ dhcp-probe-1.3.0/src/get_myeaddr.c0000644000175100017510000001310611164405072017010 0ustar metro-gimetro-gi/* * get_myeaddr.c: get my own ethernet address (for a specified IP address) * * The code for the case where we use ioctl(SIOCGARP) is not defined is based on prmac.c on page 442 of * "UNIX Network Programming: Volume 1", Second Edition, * by W. Richard Stevens. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ #include #endif #include #ifdef HAVE_NETINET_IN_H #include /* struct in_addr */ #endif #ifdef HAVE_NET_IF_ARP_H #include #endif #include "defs.h" #ifdef HAVE_FCNTL_H #include #endif #ifdef HAVE_STROPTS_H #include #endif #ifdef HAVE_NET_IF_DL_H /* for sockaddr_dl{} and LLADDR */ #include #endif #ifdef HAVE_IFADDRS_H #include /* for getifaddrs() */ #endif #include "get_myeaddr.h" #include "report.h" int get_myeaddr(int sockfd, struct in_addr *my_ipaddr, struct ether_addr *my_eaddr, const char *ifname) { /* If SIOCGIFHWADDR is defined, We use the SIOCGIFHWADDR ioctl to do our work as follows: Given interface name 'ifname', determine the corresponding Ethernet addr, store it in 'my_eaddr'. Ignores my_ipaddr. Needs a dgram sockfd for temp use. This is what you'll typically see on Solaris 9. Else if SIOCGARP is defined: We use the SIOCGARP ioctl to do our work as follows: Given my IP address 'my_ipaddr', determine the corresponding Ethernet addr, store it in 'my_eaddr'. Needs a dgram sockfd for temp use. May optionally be passed the interface name, which is needed on some platforms, else NULL. This is what you'll typically see on Linux. Else if HAVE_GETIFADDRS is defined: We use getifaddrs() to do our work as follows: Given interface name 'ifname', determine the corresponding Ethernet addr, store it in 'my_eaddr'. Ignores my_ipaddr. This is what you'll typically see on *BSD. Return 0 on success, <0 on failure. */ #ifdef SIOCGIFHWADDR struct ifreq ifr; bzero(&ifr, sizeof(ifr)); strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) < 0) { report(LOG_ERR, "get_myeaddr: ioctl(SIOCGIFHWADDR): %s", get_errmsg()); return(-1); } bcopy(ifr.ifr_hwaddr.sa_data, my_eaddr, sizeof (struct ether_addr)); #elif defined SIOCGARP /* not SIOCGIFHWADDR */ struct arpreq arpreq; struct sockaddr_in *sin; int rc; #ifdef SYS_SOCKET_IOCTLS_USE_STREAMS /* On systems that don't support SIOCxxx ioctls on socket descriptors, we will issue I_STR ioctls instead. We use ioc to hold args/result, and copy any values we need out of it to where we would expect to find them. */ int fd; struct strioctl iocb; #endif /* SYS_SOCKET_IOCTLS_USE_STREAMS */ bzero(&arpreq, sizeof(arpreq)); /* get access to the protocol address member of arpreq, treated as a sockaddr_in */ sin = (struct sockaddr_in *) &arpreq.arp_pa; /* fill in sin with the IP address we are searching for */ sin->sin_family = AF_INET; bcopy(my_ipaddr, &sin->sin_addr, sizeof(struct in_addr)); #ifdef STRUCT_ARPREQ_HAS_ARP_DEV /* Some systems have an arpreq.arp_dev member, which must be set to the interface name. */ if (ifname) { strcpy(arpreq.arp_dev, ifname); } #endif /* STRUCT_ARPREQ_HAS_ARP_DEV */ /* retrieve arp cache entry */ #ifdef SYS_SOCKET_IOCTLS_USE_STREAMS /* this streams code hasn't been tested */ if ((fd=open("/dev/arp", O_RDONLY)) < 0) { report(LOG_ERR, "get_myeaddr: open(/dev/arp): %s", get_errmsg); return(-1); } iocb.ic_cmd = SIOCGARP; iocb.ic_timout = 0; iocb.ic_dp = (char *) &arpreq; iocb.ic_len = sizeof(arpreq); rc = ioctl(fd, I_STR, (caddr_t)&iocb); close(fd); #else /* SYS_SOCKET_IOCTLS_USE_STREAMS */ rc = ioctl(sockfd, SIOCGARP, &arpreq); #endif /* SYS_SOCKET_IOCTLS_USE_STREAMS */ if (rc < 0) { report(LOG_ERR, "get_myeaddr: ioctl(SIOCGARP): %s", get_errmsg()); return(-1); } /* it *should* be complete since it's our own, but let's be sure */ if (! (arpreq.arp_flags & ATF_COM)) { report(LOG_ERR, "get_myeaddr: error retrieving ARP entry: entry not complete"); return(-1); } bcopy(arpreq.arp_ha.sa_data, my_eaddr, sizeof (struct ether_addr)); #elif defined HAVE_GETIFADDRS /* not SIOCGARP */ struct ifaddrs *ifaddrs_head; struct ifaddrs *ifp; int found; struct sockaddr_dl *sdl; if (getifaddrs(&ifaddrs_head) < 0) { report(LOG_ERR, "get_myeaddr: getifaddrs(): %s", get_errmsg()); return(-1); } /* walk the interfaces addresses until we find an interface with the right name, of type 'link' */ found = 0; for (ifp = ifaddrs_head; ifp && !found ; ifp = ifp->ifa_next) { /* We are only interested in interfaces with the name 'ifname' */ if ((strlen(ifname) == strlen(ifp->ifa_name)) && !strcmp(ifp->ifa_name, ifname)) { /* we are only interested in interfaces of type 'link' */ if (ifp->ifa_addr && (ifp->ifa_addr->sa_family == AF_LINK)) { found = 1; /* copy the result to my_eaddr */ sdl = (struct sockaddr_dl *) ifp->ifa_addr; bcopy((const void *)LLADDR(sdl), my_eaddr, sizeof (struct ether_addr)); } } } if (ifaddrs_head) freeifaddrs(ifaddrs_head); if (!found) { report(LOG_ERR, "get_myeaddr: getifaddrs() didn't find a link-layer interface with name %s", ifname); return(-1); } #else /* not HAVE_GETIFADDRS */ #error "get_myeaddr: Unable to find a way to determine my ethernet address: SIOCGIFHWADDR, SIOCGARP, an HAVE_GETIFADDRS are all undefined" #endif /* the data is now in my_eaddr */ return(0); /* success */ } dhcp-probe-1.3.0/src/configfile.c0000644000175100017510000004774011164405072016644 0ustar metro-gimetro-gi/* Routines for dealing with the application's config data: read_configfile() reads the config file and stores the data in storage private to this module. All the rest are accessor functions to this private data. Do not call any accessor function before read_configfile(). */ /* Copyright (c) 2000-2008, The Trustees of Princeton University, All Rights Reserved. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "dhcp_probe.h" #include "defaults.h" #include "configfile.h" #include "report.h" /* chaddr to use for bootp header 'chaddr' and to construct ClientID option */ /* optionally specified by user; if unspecified, GetChaddr() returns my_eaddr */ struct ether_addr chaddr; int is_chaddr_specified; /* flag */ /* ether_addr to use for ethernet frame src */ /* optionally specified by user; if unspecified, GetEther_src() returns my_eaddr */ struct ether_addr ether_src; int is_ether_src_specified; /* flag */ /* An ipaddr to use for "Server Identifer" option (when this is needed) if unspecified, defaults to SERVER_ID */ struct in_addr server_id; /* ipaddr to use for "Client IP Address" option and 'ciaddr' value (when these are needed) if unspecified, defaults to CLIENT_IP_ADDRESS */ struct in_addr client_ip_address; /* milliseconds to wait for a response after sending one packet */ int response_wait_time; /* seconds to wait after completing one set of checks before starting next set */ unsigned cycle_time; /* array of legal DHCP servers' IPsrc addresses, and number elems in array */ struct in_addr legal_servers[MAX_LEGAL_SERVERS]; int num_legal_servers; /* array of legal DHCP servers' ethersrc addresses, and number elems in array */ struct ether_addr legal_server_ethersrcs[MAX_LEGAL_SERVER_ETHERSRCS]; int num_legal_server_ethersrcs; /* parallel arrays of "lease networks of concern" (address & mask), and number of elems in arrays. We also precompute a parallel array of 'addr & mask' to save computing these repeatedly later. /* If a response already identified as being from a rogue DHCP server contains a yiaddr field field that falls into one of these networks, it is reported as a matter of special concern. */ struct in_addr lease_networks_of_concern_addr[MAX_LEASE_NETWORKS_OF_CONCERN]; struct in_addr lease_networks_of_concern_netmask[MAX_LEASE_NETWORKS_OF_CONCERN]; struct in_addr lease_networks_of_concern_addr_and_netmask[MAX_LEASE_NETWORKS_OF_CONCERN]; int num_lease_networks_of_concern; /* optional name of external alert program to call */ char *alert_program_name = NULL; /* old style alert program */ char *alert_program_name2 = NULL; /* newer style alert program */ int read_configfile(const char *fname) { /* Read the config file, initializing appropriate data structures from it. Return 1 on success, 0 on fatal error. (A syntax/semantic error inside the file is not a fatal error. Fatal errors include: being unable to open the file. We assume the caller has already init'd global my_eaddr. */ FILE *fp; char buf[BUFSIZ]; /* one entire line read from input file */ int line; /* input file line counter */ char str1[BUFSIZ], str2[BUFSIZ], str3[BUFSIZ], str4[BUFSIZ]; /* tokens parsed by sscanf */ int tokens; /* number of tokens successfully read by sscanf */ int tmpint; unsigned int tmpuint; struct ether_addr *enet; struct in_addr inaddr, inaddr2; /* init all values to defaults */ is_chaddr_specified = 0; /* chaddr can be left uninit'd, since we only use it when is_chaddr_specified is set */ is_ether_src_specified = 0; /* ether_src can be left uninit'd, since we only use it when is_ether_src_specified is set */ inet_aton(SERVER_ID, &server_id); inet_aton(CLIENT_IP_ADDRESS, &client_ip_address); cycle_time = CYCLE_TIME; response_wait_time = RESPONSE_WAIT_TIME; num_legal_servers = 0; num_legal_server_ethersrcs = 0; num_lease_networks_of_concern = 0; if (alert_program_name) { /* we must have malloc'd it last time we read the config file */ free(alert_program_name); alert_program_name = NULL; } if (alert_program_name2) { /* we must have malloc'd it last time we read the config file */ free(alert_program_name2); alert_program_name2 = NULL; } if (debug > 1) report(LOG_INFO, "read_configfile: starting"); if ((fp = fopen(fname, "r")) == NULL) { report(LOG_ERR, "read_configfile: fopen(%s): %s", fname, strerror(errno)); return(0); /* fatal error */ } line = 0; while (fgets(buf, BUFSIZ, fp) != NULL) { /* process one line */ line++; str1[0] = str2[0] = str3[0] = str4[0] = '\0'; /* rc is sometimes ambiguous, ensure we don't try to read old values/garbage */ tokens = sscanf(buf, "%s %s %s %s", str1, str2, str3, str4); if ((tokens == EOF) || (tokens == 0)) /* blank line */ continue; else if (str1[0] == '#') /* comment line */ continue; if (! strcasecmp(str1, "chaddr")) { /* token2: required ethernet address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } if ((enet = ether_aton(str2)) == NULL) { report(LOG_ERR, "read_configfile: line %d, skipping invalid ethernet address: %s", line, str2); continue; } bcopy(enet, &chaddr, sizeof(chaddr)); if (debug > 2) report(LOG_DEBUG, "read_configfile: chaddr %s", ether_ntoa(&chaddr)); is_chaddr_specified = 1; } else if (! strcasecmp(str1, "ether_src")) { /* token2: required ethernet address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } if ((enet = ether_aton(str2)) == NULL) { report(LOG_ERR, "read_configfile: line %d, skipping invalid ethernet address: %s", line, str2); continue; } bcopy(enet, ðer_src, sizeof(ether_src)); if (debug > 2) report(LOG_DEBUG, "read_configfile: ether_src %s", ether_ntoa(ðer_src)); is_ether_src_specified = 1; } else if (! strcasecmp(str1, "server_id")) { /* token2: required IP address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert address */ if (inet_aton(str2, &inaddr) == 0) { report(LOG_ERR, "read_configfile: line %d, invalid IP address: %s", line, str2); continue; } /* address converted ok, save it */ server_id.s_addr = inaddr.s_addr; if (debug > 2) report(LOG_DEBUG, "read_configfile: server_id %s", inet_ntoa(server_id)); } else if (! strcasecmp(str1, "client_ip_address")) { /* token2: required IP address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert address */ if (inet_aton(str2, &inaddr) == 0) { report(LOG_ERR, "read_configfile: line %d, invalid IP address: %s", line, str2); continue; } /* address converted ok, save it */ client_ip_address.s_addr = inaddr.s_addr; if (debug > 2) report(LOG_DEBUG, "read_configfile: client_ip_address %s", inet_ntoa(client_ip_address)); } else if (! strcasecmp(str1, "response_wait_time")) { /* token2: required number of seconds */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert string to positive integer */ if (!sscanf(str2, "%d", &tmpint) || (tmpint < 1)) { report(LOG_ERR, "read_configfile: line %d, response_wait_time must be an positive integer > 0", line); continue; } response_wait_time = tmpint; if (debug > 2) report(LOG_DEBUG, "read_configfile: response_wait_time %u", response_wait_time); } else if (! strcasecmp(str1, "cycle_time")) { /* token2: required number of seconds */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert string to unsigned integer */ if (!sscanf(str2, "%u", &tmpuint) || (tmpuint < 1)) { report(LOG_ERR, "read_configfile: line %d, cycle_time must be an unsigned integer", line); continue; } cycle_time = tmpuint; if (debug > 2) report(LOG_DEBUG, "read_configfile: cycle_time %u", cycle_time); } else if (! strcasecmp(str1, "legal_server")) { if (num_legal_servers == MAX_LEGAL_SERVERS) { report(LOG_ERR, "read_configfile: line %d, number of legal_server statements exceeds maximum (%d), ignoring", line, MAX_LEGAL_SERVERS); report(LOG_ERR, "You may increase the maximum by adjusting MAX_LEGAL_SERVERS and recompiling."); continue; } /* token2: required IP address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert address */ if (inet_aton(str2, &inaddr) == 0) { report(LOG_ERR, "read_configfile: line %d, invalid IP address: %s", line, str2); continue; } /* address converted ok, save it */ legal_servers[num_legal_servers].s_addr = inaddr.s_addr; if (debug > 2) report(LOG_DEBUG, "read_configfile: legal_server %s", inet_ntoa(legal_servers[num_legal_servers])); num_legal_servers++; } else if (! strcasecmp(str1, "legal_server_ethersrc")) { if (num_legal_server_ethersrcs == MAX_LEGAL_SERVER_ETHERSRCS) { report(LOG_ERR, "read_configfile: line %d, number of legal_server_ethersrc statements exceeds maximum (%d), ignoring", line, MAX_LEGAL_SERVER_ETHERSRCS); report(LOG_ERR, "You may increase the maximum by adjusting MAX_LEGAL_SERVER_ETHERSRCS and recompiling."); continue; } /* token2: required Ethernet address */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } if ((enet = ether_aton(str2)) == NULL) { report(LOG_ERR, "read_configfile: line %d, skipping invalid ethernet address: %s", line, str2); continue; } bcopy(enet, &legal_server_ethersrcs[num_legal_server_ethersrcs], sizeof(legal_server_ethersrcs[num_legal_server_ethersrcs])); if (debug > 2) report(LOG_DEBUG, "read_configfile: legal_server_ethersrc %s", ether_ntoa(&legal_server_ethersrcs[num_legal_server_ethersrcs])); num_legal_server_ethersrcs++; } else if (! strcasecmp(str1, "lease_network_of_concern")) { if (num_lease_networks_of_concern == MAX_LEASE_NETWORKS_OF_CONCERN) { report(LOG_ERR, "read_configfile: line %d, number of lease_network_of_concern statements exceeds maximum (%d), ignoring", line, MAX_LEASE_NETWORKS_OF_CONCERN); report(LOG_ERR, "You may increase the maximum by adjusting MAX_LEASE_NETWORKS_OF_CONCERN and recompiling."); continue; } /* token 2: required network IP address. token 3: required network mask */ if (tokens < 3) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } /* convert network address */ if (inet_aton(str2, &inaddr) == 0) { report(LOG_ERR, "read_configfile: line %d, invalid IP network address: %s", line, str2); continue; } /* convert network mask */ if (inet_aton(str3, &inaddr2) == 0) { report(LOG_ERR, "read_configfile: line %d, invalid IP network mask: %s", line, str3); continue; } /* address and mask converted ok, save them */ lease_networks_of_concern_addr[num_lease_networks_of_concern].s_addr = inaddr.s_addr; lease_networks_of_concern_netmask[num_lease_networks_of_concern].s_addr = inaddr2.s_addr; /* precompute 'addr & mask' to save us the effort of repeatedly computing it later. */ lease_networks_of_concern_addr_and_netmask[num_lease_networks_of_concern].s_addr = inaddr.s_addr & inaddr2.s_addr; if (debug > 2) { /* Calling inet_ntoa() twice in the same statement isn't safe. Avoid the need to do so by computing one of the results first and temporarily copying it. */ char addr_str_tmp[MAX_IP_ADDR_STR]; bcopy(inet_ntoa(lease_networks_of_concern_addr[num_lease_networks_of_concern]), &addr_str_tmp, sizeof(addr_str_tmp)); report(LOG_DEBUG, "read_configfile: lease_network_of_concern %s %s", addr_str_tmp, inet_ntoa(lease_networks_of_concern_netmask[num_lease_networks_of_concern])); } num_lease_networks_of_concern++; } else if (! strcasecmp(str1, "alert_program_name")) { if (alert_program_name) { report(LOG_ERR, "read_configfile: line %d, alert_program_name may be specified only once, ignoring", line); continue; } if (alert_program_name2) { report(LOG_ERR, "read_configfile: line %d, alert_program_name may not be specified when alert_program_name2 was already specified, as only one may be used, ignoring", line); continue; } /* token2: required program name */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } if (str2[0] != '/') { report(LOG_ERR, "read_configfile: line %d, invalid alert_program_name '%s', must be an absolute pathname, ignoring", line, str2); continue; } alert_program_name = strdup(str2); if (! alert_program_name) { report(LOG_ERR, "read_configfile: line %d, can't save alert_program_name because strdup() could not malloc() space, ignoring", line); continue; } if (debug > 2) report(LOG_DEBUG, "read_configfile: alert_program_name %s", alert_program_name); } else if (! strcasecmp(str1, "alert_program_name2")) { if (alert_program_name2) { report(LOG_ERR, "read_configfile: line %d, alert_program_name2 may be specified only once, ignoring", line); continue; } if (alert_program_name) { report(LOG_ERR, "read_configfile: line %d, alert_program_name2 may not be specified when alert_program_name was already specified, as only one may be used, ignoring", line); continue; } /* token2: required program name */ if (tokens < 2) { report(LOG_ERR, "read_configfile: line %d, not enough values: %s", line, buf); continue; } if (str2[0] != '/') { report(LOG_ERR, "read_configfile: line %d, invalid alert_program_name2 '%s', must be an absolute pathname, ignoring", line, str2); continue; } alert_program_name2 = strdup(str2); if (! alert_program_name2) { report(LOG_ERR, "read_configfile: line %d, can't save alert_program_name2 because strdup() could not malloc() space, ignoring", line); continue; } if (debug > 2) report(LOG_DEBUG, "read_configfile: alert_program_name2 %s", alert_program_name2); } else { report(LOG_ERR, "read_configfile: line %d, unrecognized token: %s", line, str1); } } /* process one line */ fclose(fp); if (debug > 1) report(LOG_INFO, "read_configfile: done"); return(1); /* success */ } struct ether_addr * GetChaddr (void) { /* Return copy of chaddr (if specified) else my_eaddr. Not re-entrant; we use static storage to hold the value address we return. Should not be called until global 'my_eaddr' has been init'd. */ static struct ether_addr chaddr_copy; /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ if (is_chaddr_specified) { bcopy(&chaddr, &chaddr_copy, sizeof(chaddr_copy)); } else { bcopy(&my_eaddr, &chaddr_copy, sizeof(chaddr_copy)); } return &chaddr_copy; } struct ether_addr * GetEther_src (void) { /* Return copy of ether_src (if specified) else my_eaddr. Not re-entrant; we use static storage to hold the value address we return. Should not be called until global 'my_eaddr' has been init'd. */ static struct ether_addr ether_src_copy; /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ if (is_ether_src_specified) { bcopy(ðer_src, ðer_src_copy, sizeof(ether_src_copy)); } else { bcopy(&my_eaddr, ðer_src_copy, sizeof(ether_src_copy)); } return ðer_src_copy; } struct in_addr * GetClient_ip_address(void) { /* Return copy of client_ip_address. Not re-entrant; we use static storage to hold the value we return. */ static struct in_addr client_ip_address_copy; /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ client_ip_address_copy.s_addr = client_ip_address.s_addr; return &client_ip_address_copy; } struct in_addr * GetServer_id(void) { /* Return copy of server_id. Not re-entrant; we use static storage to hold the value we return. */ static struct in_addr server_id_copy; /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ server_id_copy.s_addr = server_id.s_addr; return &server_id_copy; } unsigned GetCycle_time(void) { /* Return value of cycle_time. */ return cycle_time; } int GetResponse_wait_time(void) { /* Return value of response_wait_time */ return response_wait_time; } int isLegalServersMember(struct in_addr *ipaddr) { /* If ipaddr is a member of legal_servers[], return true. Else return false. */ int i; if (!ipaddr) { report(LOG_ERR, "isLegalServersMember: internal error, called with *ipaddr==NULL"); return 0; /* not found */ } for (i = 0; i < num_legal_servers; i++) { if (ipaddr->s_addr == legal_servers[i].s_addr) return 1; /* found */ } return 0; /* not found */ } int isInLeaseNetworksOfConcern(struct in_addr *ipaddr) { /* If ipaddr is within any of the lease_networks_of_concern, return true. Else return false. */ int i; if (!num_lease_networks_of_concern) /* No lease_networks_of_concern have been specified. */ return 0; /* not found */ for (i = 0; i < num_lease_networks_of_concern; i++) { if ((ipaddr->s_addr & lease_networks_of_concern_netmask[i].s_addr) == lease_networks_of_concern_addr_and_netmask[i].s_addr) return 1; /* found */ } return 0; /* not found */ } int isLegalServerEthersrcsMember(struct ether_addr *eaddr) { /* If eaddr is a member of legal_server_ethersrcs[], return true. If legal_server_ethersrcs[] is empty, also return true. Else return false. */ int i; if (!eaddr) { report(LOG_ERR, "isLegalServerEthersrcsMember: internal error, called with *eaddr==NULL"); return 0; /* not found */ } /* If no legal_server_ethersrc values have been specified, then the user doesn't want us to check the response's ethersrc in the first place. So treat eaddr as "legal"; return true. */ if (!num_legal_server_ethersrcs) return 1; for (i = 0; i < num_legal_server_ethersrcs; i++) { if (!bcmp(eaddr, &legal_server_ethersrcs[i], sizeof(struct ether_addr))) return 1; /* found */ } return 0; /* not found */ } /* Return copy of alert_program_name string. Not re-entrant; we use static storage to hold the ptr to the string we return. */ char * GetAlert_program_name(void) { static char *alert_program_name_copy = NULL; if (alert_program_name_copy) { /* Space was allocated from a previous call. We must not re-use that space, since it's possible that the alert_program_name has gotten longer due to a re-read of the configfile. */ free(alert_program_name_copy); alert_program_name_copy = NULL; } if (!alert_program_name) { return (char *) NULL; } /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ alert_program_name_copy = strdup(alert_program_name); if (!alert_program_name_copy) { report(LOG_ERR, "GetAlert_program_name: strdup() failed (presumably a malloc error)"); my_exit(1, 1, 1); } return alert_program_name_copy; } /* Return copy of alert_program_name2 string. Not re-entrant; we use static storage to hold the ptr to the string we return. */ char * GetAlert_program_name2(void) { static char *alert_program_name2_copy = NULL; if (alert_program_name2_copy) { /* Space was allocated from a previous call. We must not re-use that space, since it's possible that the alert_program_name2 has gotten longer due to a re-read of the configfile. */ free(alert_program_name2_copy); alert_program_name2_copy = NULL; } if (!alert_program_name2) { return (char *) NULL; } /* we re-init the static copy on each call, since we don't know if the caller has written into it. */ alert_program_name2_copy = strdup(alert_program_name2); if (!alert_program_name2_copy) { report(LOG_ERR, "GetAlert_program_name2: strdup() failed (presumably a malloc error)"); my_exit(1, 1, 1); } return alert_program_name2_copy; } dhcp-probe-1.3.0/src/get_myipaddr.c0000644000175100017510000001225611164405072017201 0ustar metro-gimetro-gi/* * get_myipaddr.c: get my own IP address (for a specified interface) * * Based on get_ifi_info() beginning on page 429 * "UNIX Network Programming: Volume 1", Second Edition, * by W. Richard Stevens. * I've modified it to support platforms needing SYS_SOCKET_IOCTLS_USE_STREAMS. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include /* struct in_addr */ #include /* inet_ntoa() */ #include #include "defs.h" #ifdef HAVE_STROPTS_H #include #endif #include "get_myipaddr.h" #include "report.h" #include "utils.h" #ifndef max #define max(a,b) ((a) > (b) ? (a) : (b)) #endif int get_myipaddr(int sockfd, char *ifname, struct in_addr *my_ipaddr) { /* Given my interface named 'ifname', determine the corresponding IP addr, store it in 'my_ipaddr'. If the interface has multiple IP addrs, we only return the first one. Needs a dgram sockfd for temp use. Return 0 on success, <0 on failure. */ int len, lastlen, rc; char *ptr, *buf; struct sockaddr_in *sip; struct ifreq *ifr; struct ifconf ifconf; /* holds list of interfaces as returned by ioctl SIOCGIFCONF */ #ifdef SYS_SOCKET_IOCTLS_USE_STREAMS /* On systems that don't support SIOCxxx ioctls on socket descriptors, we will issue I_STR ioctls instead. We use ioc to hold args/result, and copy any values we need out of it to where we would expect to find them. */ struct strioctl ioc; #endif /* issue SIOCGIFCONF to get buf populated with all the struct ifreq's */ /* Since we don't know how many interfaces there are, we allocate some space for the buffer, then issue the request in a loop, stopping when we have a succesful return and the returned data length is the same as the previous attempt. */ lastlen = 0; len = 100 * sizeof(struct ifreq); /* initial buffer size guess */ for ( ; ; ) { buf = smalloc(len, 1); #ifdef SYS_SOCKET_IOCTLS_USE_STREAMS /* this streams code hasn't been tested */ ioc.ic_cmd = SIOCGIFCONF; ioc.ic_timout = 0; ioc.ic_len = len; ioc.ic_dp = (char *) buf; rc = ioctl(sockfd, I_STR, (char *) &ioc); ifconf.ifc_len = ioc.ic_len; ifconf.ifc_req = (void *) ioc.ic_dp; #else /* not SYS_SOCKET_IOCTLS_USE_STREAMS */ ifconf.ifc_len = len; ifconf.ifc_buf = buf; rc = ioctl(sockfd, SIOCGIFCONF, (void *)&ifconf); #endif /* not SYS_SOCKET_IOCTLS_USE_STREAMS */ if (rc < 0) { /* EINVAL is an expected error return on some systems, indicating a buffer too small; any other error return is presumably serious. Something's also wrong if we get an error return *after* a previous succesful call (which last lastlen>0). */ if (errno != EINVAL || lastlen != 0) { report(LOG_ERR, "get_myipaddr: ioctl(SIOCGIFCONF): %s", get_errmsg()); report(LOG_NOTICE, "exiting"); exit(1); } /* else we know buffer was too small, so we'll just try again with larger buffer */ } else { /* no error return, but some systems just truncate the data and return 0. So we're only done if we got *something* back and we've previousy gotten the same datalength with a smaller buffer. */ if (ifconf.ifc_len &&(ifconf.ifc_len == lastlen)) break; /* success, len has not changed */ lastlen = ifconf.ifc_len; } len += 10 * sizeof(struct ifreq); /* increment for next try */ free(buf); } for (ptr = buf; ptr < buf + ifconf.ifc_len; ) { /* walk through the struct ifreq's in buf */ /* increment of ptr is done separately below */ ifr = (struct ifreq *) ptr; /* determine 'len', the length of the current ifreq, so we can increment over it when done */ #ifdef STRUCT_SOCKADDR_HAS_SA_LEN len = max(sizeof(struct sockaddr), ifr->ifr_addr.sa_len); #else switch (ifr->ifr_addr.sa_family) { #ifdef AF_INET6 case AF_INET6: len = sizeof(struct sockaddr_in6); break; #endif /* AF_INET6 */ case AF_INET: default: len = sizeof(struct sockaddr); } #endif /* not STRUCT_SOCKADDR_HAS_SA_LEN */ /* increment ptr to next interface for next time through the loop */ ptr += sizeof(ifr->ifr_name) + len; if (strcmp(ifname, ifr->ifr_name) != 0 ) /* is this the interface we're looking for? */ continue; /* this IS the interface we're looking for */ /* get my IP address */ #ifdef SYS_SOCKET_IOCTLS_USE_STREAMS /* this streams code hasn't been tested */ ioc.ic_cmd = SIOCGIFADDR; ioc.ic_timout = 0; ioc.ic_len = sizeof(ifr); ioc.ic_dp = (char *) 𝔦 rc = ioctl(sockfd, I_STR, (char *) &ioc); #else /* not SYS_SOCKET_IOCTLS_USE_STREAMS */ rc = ioctl(sockfd, SIOCGIFADDR, (void *) ifr); #endif /* not SYS_SOCKET_IOCTLS_USE_STREAMS */ if (rc < 0) { report(LOG_ERR, "get_myipaddr: ioctl(SIOCGIFADDR): %s", get_errmsg()); return(-1); } sip = (struct sockaddr_in *) &ifr->ifr_addr; bcopy((char *) &sip->sin_addr, (char *) &(my_ipaddr->s_addr), sizeof(struct in_addr)); free(buf); /* we're done with ifconf */ return(0); /* success */ /* go on to next interface */ } /* only reached when we failed to locate 'ifname' in list of interfaces */ report(LOG_ERR, "get_myipaddr: couldn't locate interface %s", ifname); free(buf); /* we're done with ifconf */ return(-1); /* failure */ } dhcp-probe-1.3.0/src/open_max.c0000644000175100017510000000300511164405072016327 0ustar metro-gimetro-gi/* Attempt to return the maximum number of descriptors in semi portable way. If we encounter difficulties, we'll return a guess. */ /* Based on open_max() from "Advanced Programming in the UNIX Environment", Second Edition, by W. Richard Stevens, Stephen Rago. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "open_max.h" /* If we fail to obtain a reasonable value, use this guess. There's no guarantee this is large enough. */ #define OPEN_MAX_GUESS 256 /* compute this only once */ static long openmax = 0; long open_max(void) { if (openmax == 0) { /* first time through */ #ifdef HAVE_SYSCONF #ifdef _SC_OPEN_MAX /* Attempt to obtain the value via sysconf. */ if ((openmax = sysconf(_SC_OPEN_MAX)) < 0) { /* Regardless of the cause of the failure, discard the value. */ openmax = 0; } #endif /* _SC_OPEN_MAX */ #endif /* HAVE_SYSCONF */ #ifdef HAVE_GETRLIMIT #ifdef RLIMIT_NOFILE if (openmax == 0) { /* We (still) don't have a value. */ /* Attempt to obtain the value via getrlimit. */ struct rlimit rlim; if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) { /* Don't accept the value if it means "no limit." */ if (rlim.rlim_max != RLIM_INFINITY) openmax = rlim.rlim_max; } } #endif /* RLIMIT_NOFILE */ #endif /* HAVE_GETRLIMIT */ if (openmax == 0) { /* We (still) don't have a value. */ #ifdef OPEN_MAX /* OPEN_MAX is not portable. */ openmax = OPEN_MAX; #else openmax = OPEN_MAX_GUESS; 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dhcp-probe-1.3.0/src/bootp.c0000644000175100017510000003072511164405072015655 0ustar metro-gimetro-gi/* Copyright (c) 2000-2008, The Trustees of Princeton University, All Rights Reserved. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "defaults.h" #include "dhcp_probe.h" #include "bootp.h" #include "configfile.h" #include "report.h" /* declare, and in some cases initialize, vendor option arrays */ unsigned char vendor_option_vm_cookie_rfc1048[] = VENDOR_OPTION_VM_COOKIE_RFC1048; unsigned char vendor_option_end[] = VENDOR_OPTION_END; unsigned char vendor_option_dhcpmessagetype_dhcpdiscover[] = VENDOR_OPTION_DHCPDISCOVER; unsigned char vendor_option_dhcpmessagetype_dhcprequest[] = VENDOR_OPTION_DHCPREQUEST; unsigned char vendor_option_clientid[1 + 1 + 1 + sizeof(struct ether_addr)]; /* option code, length byte, htype byte, ether_addr */ unsigned char vendor_option_serverid[1 + 1 + 4]; /* option code, length byte, ip_addr */ unsigned char vendor_option_requestedipaddr[1 + 1 + 4]; /* option code, length byte, ip_addr */ int init_libnet_context_queue(void) { /* Init the libnet context queue (an unnamed global structure maintained by libnet). The queue contains one context for each probe packet flavor we will later write. We construct these probe packets here once, as they do not change during run, except if signalled to re-read the configuration file. We read the global packet_flavors[] to get a list of all the flavors. Return 1 on success, 0 on failure. We're called as part of startup. We're also called if signalled to re-read the configuration file. */ int i; /* Destroy all the libnet contexts (if any), and the context queue (if any). */ libnet_cq_destroy(); /* construct a libnet context for each flavor packet */ for (i = 0; i < NUM_FLAVORS; i++) { libnet_t *l = NULL; char *libnet_errbuf; struct bootp *udp_payload = NULL; /* Need a fresh errbuf for each libnet context, one that will not disappear when we go out of scope. */ libnet_errbuf = (char *) smalloc(LIBNET_ERRBUF_SIZE, 0); /* Initialize libnet context. */ if ((l = libnet_init(LIBNET_LINK, ifname, libnet_errbuf)) == NULL) { report(LOG_ERR, "init_libnet_context_queue: libnet_init: error initializing libnet for interface '%s': %s", ifname, libnet_errbuf); return(0); } /* build the DHCP/BOOTP packet; i.e. the DHCP/BOOTP header and payload */ if ((udp_payload = build_dhcp_packet(i)) == NULL) return(0); /* build the UDP, IPv4, and Ethernet headers */ if (! build_frame(l, udp_payload)) return(0); /* add the current libnet context (a completed packet) to the libnet context queue */ char label[NUM_FLAVORS_MAXSTRING]; snprintf(label, sizeof(label)-1, "%d", i); if (libnet_cq_add(l, label) == -1) { report(LOG_ERR, "init_libnet_context_queue: libnet_cq_add: error adding libnet context '%s' to queue: %s", label, libnet_errbuf); return(0); } } return 1; /* success */ } struct bootp * build_dhcp_packet(enum dhcp_flavor_t flavor) { /* Allocate, build, and return the DHCP/BOOTP packet; i.e. the DHCP/BOOTP header and payload. Return pointer to the packet on success. On failure we return NULL, and no packet has been allocated. Caller must specify which flavor of packet payload we should create. We do NOT use libnet_build_dhcpv4() because we want finer-grain control over the construction of the packet. The packet we return is suitable for inclusion as 'optional payload' in a libnet_build_udp() constructor. */ struct bootp *packet; unsigned char *next_vendor_option; /* place to write next vendor option */ /* XXX I cannot determine whether the contents of the optional payload passed to libnet_build_udp() is COPIED by libnet, or if libnet just keeps a copy of the pointer. If the former, I should create the buffer using an auto var; if the latter I should malloc the buffer. To be safe, I malloc the buffer. However, note that if libnet actually COPIES the contents of my buffer into its own private buffer, then presumably libnet_destroy() will not free the buffer I malloc'd, so each time we re-read the configuration file, we will leak the buffer I malloc'd. */ packet = (struct bootp *) smalloc(sizeof(struct bootp), 1); next_vendor_option = packet->bootp_options; /* XXX: we don't check to ensure 'next_vendor_option' stays inside 'bootp_options' field, since we know that for the packets we build, it'll all fit. If we needed to, we could use the larger 'bootp_options' field allowed by DHCP (but not BootP), but then all our payloads won't be the same size, a simplifying assumption we're making throughout the code. */ /* set some fields to fixed values (for most fields, the '0' we just copied in is appropriate) */ packet->bootp_htype = HTYPE_ETHER; packet->bootp_hlen = HLEN_ETHER; packet->bootp_xid = BOOTP_XID; packet->bootp_op = BOOTREQUEST; bcopy(GetChaddr(), &packet->bootp_chaddr, sizeof(struct ether_addr)); /* add RFC1048 cookie to options field */ insert_option(&next_vendor_option, vendor_option_vm_cookie_rfc1048, sizeof(vendor_option_vm_cookie_rfc1048)); if (flavor != BOOTP) { struct in_addr * ciaddr; /* temp value of Client IP Address, if needed */ /* We prefer to make the 'DHCP Message Type' the first option (after RFC1048 cookie) if possible, because we have seen one (broken) DHCP server that only answered DHCP clients if they specifed this option right after the RFC1048 cookie. */ switch (flavor) { case DHCP_INIT: /* add DHCP Message Type to options field, set to DHCPDISCOVER */ insert_option(&next_vendor_option, vendor_option_dhcpmessagetype_dhcpdiscover, sizeof(vendor_option_dhcpmessagetype_dhcpdiscover)); break; case DHCP_SELECTING: /* add DHCP Message Type to options field, set to DHCPREQUEST */ insert_option(&next_vendor_option, vendor_option_dhcpmessagetype_dhcprequest, sizeof(vendor_option_dhcpmessagetype_dhcprequest)); /* add DHCP Server Identifier to options field, set to specified bogus value */ init_option_serverid(); insert_option(&next_vendor_option, vendor_option_serverid, sizeof(vendor_option_serverid)); /* add DHCP Requested IP Address to options field, set to specified bogus value */ init_option_requestedipaddr(); insert_option(&next_vendor_option, vendor_option_requestedipaddr, sizeof(vendor_option_requestedipaddr)); break; case DHCP_INIT_REBOOT: /* add DHCP Message Type to options field, set to DHCPREQUEST */ insert_option(&next_vendor_option, vendor_option_dhcpmessagetype_dhcprequest, sizeof(vendor_option_dhcpmessagetype_dhcprequest)); /* add DHCP Requested IP Address to options field, set to specified bogus value */ init_option_requestedipaddr(); insert_option(&next_vendor_option, vendor_option_requestedipaddr, sizeof(vendor_option_requestedipaddr)); break; case DHCP_REBINDING: /* add DHCP Message Type to options field, set to DHCPREQUEST */ insert_option(&next_vendor_option, vendor_option_dhcpmessagetype_dhcprequest, sizeof(vendor_option_dhcpmessagetype_dhcprequest)); /* set ciaddr to specified bogus value */ ciaddr = GetClient_ip_address(); packet->bootp_ciaddr.s_addr = ciaddr->s_addr; break; default: report(LOG_ERR, "build_dhcp_packet: internal error: invalid packet flavor"); free(packet); return NULL; break; } /* switch */ /* add DHCP client id to options field */ init_option_clientid(); insert_option(&next_vendor_option, vendor_option_clientid, sizeof(vendor_option_clientid)); } /* flavor != BOOTP */ /* add END option to options field */ insert_option(&next_vendor_option, vendor_option_end, sizeof(vendor_option_end)); return packet; /* success */ } int build_frame(libnet_t *l, struct bootp *udp_payload) { /* Build UDP, IPv4, and Ethernet headers. Caller provides libnet context into which we build. Caller provides already constructed udp_payload. We return true on success, false on failure. Note that you must have already init'd the global 'my_eaddr' before calling this! */ u_char ether_bcast_eaddr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; /* build the UDP header, and copy in the UDP payload */ if (libnet_build_udp( PORT_BOOTPC, /* src_port */ PORT_BOOTPS, /* dst_port */ LIBNET_UDP_H + sizeof(struct bootp), /* UDP packet len */ 0, /* UDP checksum, 0 = autofill */ (u_int8_t *) udp_payload, sizeof(struct bootp), /* optional payload (the DHCP/BOOTP packet) */ l, /* libnet context */ 0 /* libnet ptag, 0 == create */ ) == -1) { report(LOG_ERR, "build_frame: libnet_build_udp failed: %s", libnet_geterror(l)); return(0); } /* build the IPv4 header */ if (libnet_build_ipv4( LIBNET_IPV4_H + LIBNET_UDP_H + sizeof(struct bootp), /* total IP packet length including all subsequent data */ 0, /* tos */ 1, /* id */ 0, /* frag/offset bits */ 60, /* ttl */ IPPROTO_UDP, /* protocol */ 0, /* IP checksum, 0 = autofill */ INADDR_ANY, /* saddr == 0.0.0.0 */ INADDR_BROADCAST, /* daddr == 255.255.255.255 */ NULL, 0, /* no optional payload */ l, /* libnet context */ 0 /* libnet ptag, 0 == create */ ) == -1) { report(LOG_ERR, "build_frame: libnet_build_ipv4 failed: %s", libnet_geterror(l)); return(0); } if (use_8021q) { /* build the Ethernet 802.1Q header */ if (libnet_build_802_1q( ether_bcast_eaddr, /* ether_dst */ #ifdef STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET GetEther_src()->ether_addr_octet, /* ether_src */ #elif defined STRUCT_ETHER_ADDR_HAS_OCTET GetEther_src()->octet, /* ether_src */ #else #error "struct ether_addr{} has neither an ether_addr_octet nor an octet member, cannot proceed." #endif ETHERTYPE_VLAN, /* TPI */ VLAN_PRIORITY, /* priority (0-7) */ VLAN_CFI_FLAG, /* CFI flag */ vlan_id, /* VLAN ID (0-4095) */ ETHERTYPE_IP, /* 802.3 len or Ethernet Type II ethertype */ NULL, 0, /* no optional payload */ l, /* libnet context */ 0 /* libnet ptag, 0 == create */ ) == -1) { report(LOG_ERR, "build_frame: libnet_build_802_1q failed: %s", libnet_geterror(l)); return(0); } } else { /* build the Ethernet header */ if (libnet_build_ethernet( ether_bcast_eaddr, /* ether_dst */ #ifdef STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET GetEther_src()->ether_addr_octet, /* ether_src */ #elif defined STRUCT_ETHER_ADDR_HAS_OCTET GetEther_src()->octet, /* ether_src */ #else #error "struct ether_addr{} has neither an ether_addr_octet nor an octet member, cannot proceed." #endif ETHERTYPE_IP, /* ethertype */ NULL, 0, /* no optional payload */ l, /* libnet context */ 0 /* libnet ptag, 0 == create */ ) == -1) { report(LOG_ERR, "build_frame: libnet_build_ethernet failed: %s", libnet_geterror(l)); return(0); } } return 1; /* success */ } void init_option_clientid(void) { /* Init 'vendor_option_clientid' */ /* option code */ vendor_option_clientid[0] = VENDOR_OPTION_CLIENTID; /* length byte */ vendor_option_clientid[1] = 1 + sizeof(struct ether_addr); /* fill in clientid value: htype code followed by enet addr */ vendor_option_clientid[2] = 0x01; bcopy(GetChaddr(), vendor_option_clientid+3, sizeof(struct ether_addr)); return; } void init_option_serverid(void) { /* Init 'vendor_option_serverid' */ struct in_addr *server_id; /* option code */ vendor_option_serverid[0] = VENDOR_OPTION_SERVERID; /* length byte */ vendor_option_serverid[1] = sizeof(server_id->s_addr); server_id = GetServer_id(); bcopy(&server_id->s_addr, vendor_option_serverid+2, sizeof(server_id->s_addr)); return; } void init_option_requestedipaddr(void) { /* Init 'vendor_option_requestedipaddr' */ struct in_addr *requestedipaddr; /* option code */ vendor_option_requestedipaddr[0] = VENDOR_OPTION_REQUESTED_IP_ADDRESS; /* length byte */ vendor_option_requestedipaddr[1] = sizeof(requestedipaddr->s_addr); requestedipaddr = GetClient_ip_address(); bcopy(&requestedipaddr->s_addr, vendor_option_requestedipaddr+2, sizeof(requestedipaddr->s_addr)); return; } void insert_option(unsigned char **destination, unsigned char *option, int len) { /* Copy an option value (sequence of bytes) of length 'len' to *destination, then advance the destination ptr by that length */ bcopy(option, *destination, len); *destination += len; return; } dhcp-probe-1.3.0/src/report.h0000644000175100017510000000045611164405072016050 0ustar metro-gimetro-gi#ifndef REPORT_H #define REPORT_H extern void report_init(int dont_fork, char *logfile_name); extern char *get_errmsg(void); #ifdef STDC_HEADERS extern void report(int, char *, ...); #else extern void report(); #endif void close_and_reopen_log_file(char * logfile_name); #endif /* not REPORT_H */ dhcp-probe-1.3.0/src/dhcp_probe.c0000644000175100017510000012414711164405072016641 0ustar metro-gimetro-gi/* dhcp_probe: Broadcast BOOTPREQUEST, DHCPDISCOVER, and DHCPREQUEST packets out specified interfaces, listen for answers, discard those from known "good" servers, log the others. The intent is to provide a way to find rogue BootP and DHCP servers. This will only find rogue servers that happen to answer us; rogue servers configured to only answer a selected set of clients will not be discovered. */ /* Copyright (c) 2000-2008, The Trustees of Princeton University, All Rights Reserved. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "defs.h" #include "defaults.h" #include "dhcp_probe.h" #include "bootp.h" #include "daemonize.h" #include "get_myeaddr.h" #include "get_myipaddr.h" #include "configfile.h" #include "report.h" #include "utils.h" #ifndef lint static const char rcsid[] = "dhcp_probe version " VERSION; static const char copyright[] = "Copyright 2000-2008, The Trustees of Princeton University. All rights reserved."; static const char contact[] = "networking at princeton dot edu"; #endif /* initialize options to defaults */ int debug = 0; int dont_fork = 0; char *config_file = CONFIG_FILE; char *pid_file = PID_FILE; char *capture_file = NULL; /* Init snaplen to the max number of bytes we might need to capture in response to a single packet we send. This needs to include the complete size of the ethernet frame. Of course, we can't really know this ahead of time; who knows how many servers out there might answer us, and how large their responses might be? The simplest approach is to just overestimate generously. Although a normal reply is under 600 bytes, nothing prevents someone from sending maximum-size Ethernet frames (1514 bytes) as responses. So if you want to be prepared to handle 20 responses to a single packet, you would set snaplen to 20*1514. Note than since pcap_open_live() declares this an 'int', don't specify a value larger than that. */ int snaplen = CAPTURE_BUFSIZE; int socket_receive_timeout_feature = 0; char *prog = NULL; char *logfile_name = NULL; int sockfd; volatile sig_atomic_t reread_config_file; /* for signal handler */ volatile sig_atomic_t reopen_log_file; /* for signal handler */ volatile sig_atomic_t reopen_capture_file; /* for signal handler */ volatile sig_atomic_t quit_requested; /* for signal requested */ pcap_t *pd = NULL; /* libpcap - packet capture descriptor used for actual packet capture */ pcap_t *pd_template = NULL; /* libpcap - packet capture descriptor just used as template */ pcap_dumper_t *pcap_dump_d = NULL; /* libpcap - dump descriptor */ /* An array listing all the valid packet flavors we may write */ enum dhcp_flavor_t packet_flavors[] = {BOOTP, DHCP_INIT, DHCP_SELECTING, DHCP_INIT_REBOOT, DHCP_REBINDING}; char *ifname; struct ether_addr my_eaddr; int use_8021q = 0; int vlan_id = 0; int main(int argc, char **argv) { int c, errflag=0; struct in_addr my_ipaddr; extern char *optarg; extern int optind, opterr, optopt; struct sigaction sa; FILE *pid_fp; char *cwd = CWD; int i; int write_packet_len; int bytes_written; unsigned int time_to_sleep; sigset_t new_sigset, old_sigset; /* for libpcap */ bpf_u_int32 netnumber, netmask; struct bpf_program bpf_code; int linktype; char pcap_errbuf[PCAP_ERRBUF_SIZE], pcap_errbuf2[PCAP_ERRBUF_SIZE]; /* for libnet */ char libnet_errbuf[LIBNET_ERRBUF_SIZE]; /* get progname = last component of argv[0] */ prog = strrchr(argv[0], '/'); if (prog) prog++; else prog = argv[0]; while ((c = getopt(argc, argv, "c:d:fhl:o:p:Q:s:Tvw:")) != EOF) { switch (c) { case 'c': if (optarg[0] != '/') { fprintf(stderr, "%s: invalid config file '%s', must be an absolute pathname\n", prog, optarg); errflag++; break; } config_file = optarg; break; case 'd': { char *stmp = optarg; if ((sscanf(stmp, "%d", &debug) != 1) || (debug < 0)) { fprintf(stderr, "%s: invalid debug level '%s'\n", prog, optarg); debug = 0; errflag++; } break; } case 'f': dont_fork = 1; break; case 'h': usage(); my_exit(0, 0, 0); case 'l': if (optarg[0] != '/') { fprintf(stderr, "%s: invalid log file '%s', must be an absolute pathname\n", prog, optarg); errflag++; break; } logfile_name = optarg; break; case 'o': if (optarg[0] != '/') { fprintf(stderr, "%s: invalid capture file '%s', must be an absolute pathname\n", prog, optarg); errflag++; break; } capture_file = optarg; break; case 'p': if (optarg[0] != '/') { fprintf(stderr, "%s: invalid pid file '%s', must be an absolute pathname\n", prog, optarg); errflag++; break; } pid_file = optarg; break; case 'Q': { char *stmp = optarg; if ((sscanf(stmp, "%d", &vlan_id) != 1) || (vlan_id < VLAN_ID_MIN) || (vlan_id > VLAN_ID_MAX)) { fprintf(stderr, "%s: invalid vlan ID '%s', must be integer %d ... %d\n", prog, optarg, VLAN_ID_MIN, VLAN_ID_MAX); errflag++; } else { use_8021q++; } break; } case 's': { char *stmp = optarg; /* XXX sscanf() silently forces to integer range. If you specify a value outside the range, and the conversion results in a positive value within the range, we will silently use the converted value. */ if ((sscanf(stmp, "%d", &snaplen) != 1) || (snaplen < 1)) { fprintf(stderr, "%s: invalid capture buffer size '%s'\n", prog, optarg); snaplen = CAPTURE_BUFSIZE; errflag++; } break; } case 'T': socket_receive_timeout_feature = 1; break; case 'v': printf("DHCP Probe version %s\n", VERSION); my_exit(0, 0, 0); case 'w': if (optarg[0] != '/') { fprintf(stderr, "%s: invalid working directory '%s', must be an absolute pathname\n", prog, optarg); errflag++; break; } cwd = optarg; break; case '?': usage(); my_exit(0, 0, 0); default: errflag++; break; } } if (optind == argc || errflag) { usage(); my_exit(1, 0, 1); } if (! dont_fork) daemonize(); /* initialize logging */ report_init(dont_fork, logfile_name); if (chdir(cwd) < 0) { report(LOG_ERR, "chdir(%s): %s", cwd, get_errmsg()); my_exit(1, 0, 1); } report(LOG_NOTICE, "starting, version %s", VERSION); /* Before writing our pid, prepare to respond reasonably if we get any of our supported signals. SIGHUP,SIGUSR1,SIGUSR2 - ignore until our internal data structs are ready for it SIGINT,SIGTERM,SIGQUIT - leave default for now, so it will still kill us, but not try to look at uninit'd pcap structs */ if (dont_fork) { /* we didn't daemonize earlier */ /* ignore SIGHUP */ sigemptyset(&sa.sa_mask); sa.sa_handler = SIG_IGN; if (sigaction(SIGHUP, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 0, 1); } } /* else we already set SIGHUP to ignore while daemonizing, so we don't need to do it again */ /* ignore SIGUSR1 */ sigemptyset(&sa.sa_mask); sa.sa_handler = SIG_IGN; if (sigaction(SIGUSR1, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 0, 1); } /* ignore SIGUSR2 */ sigemptyset(&sa.sa_mask); sa.sa_handler = SIG_IGN; if (sigaction(SIGUSR2, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 0, 1); } /* write pid file as soon as possible after (possibly) forking */ if ((pid_fp = open_for_writing(pid_file)) == NULL) { report(LOG_ERR, "could not open pid file %s for writing", pid_file); my_exit(1, 0, 1); } else { fprintf(pid_fp, "%d\n", (int) getpid()); fclose(pid_fp); } if (! read_configfile(config_file)) { my_exit(1, 1, 1); } reread_config_file = 0; /* set by signal handler */ reopen_log_file = 0; /* set by signal handler */ reopen_capture_file = 0; /* set by signal handler */ ifname = strdup(argv[optind]); /* interface name is a required final argument */ /* general purpose dgram socket for various uses */ if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { report(LOG_ERR, "socket(): %s", get_errmsg()); my_exit(1, 1, 1); } /* lookup netnumber and netmask for specified interface */ if (pcap_lookupnet(ifname, &netnumber, &netmask, pcap_errbuf) < 0) { report(LOG_ERR, "%s: bad interface '%s': %s", prog, ifname, pcap_errbuf); my_exit(1, 1, 1); } /* We need to know the Ethernet address for the named interface, but don't have a direct way to look that up. So we go the roundabout route of looking up the (first) IP address associated with that interface, then looking in our ARP cache for this IP address to see the associated ethernet address. */ /* lookup IP address for specified interface */ if (get_myipaddr(sockfd, ifname, &my_ipaddr) < 0) { report(LOG_ERR, "couldn't determine IP addr for interface %s", ifname); my_exit(1, 1, 1); } /* lookup ethernet address for specified IP address */ /* note that my_eaddr must be init'd before calling GetChaddr() */ if (get_myeaddr(sockfd, &my_ipaddr, &my_eaddr, ifname) < 0) { report(LOG_ERR, "couldn't determine my ethernet addr for my IP address %s", inet_ntoa(my_ipaddr)); my_exit(1, 1, 1); } if (debug > 0) { if (use_8021q) { report(LOG_INFO, "using interface %s, 802.1Q VLAN ID %d (IP address %s, hardware address %s)", ifname, vlan_id, inet_ntoa(my_ipaddr), ether_ntoa(&my_eaddr)); } else { report(LOG_INFO, "using interface %s, no 802.1Q (IP address %s, hardware address %s)", ifname, inet_ntoa(my_ipaddr), ether_ntoa(&my_eaddr)); } if (socket_receive_timeout_feature) report(LOG_INFO, "socket receive timeout feature enabled"); } /* We're ready to handle SIGINT, SIGTERM, SIGQUIT ourself */ sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGINT, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGTERM, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGQUIT, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } /* install SIGHUP handler to re-read config files on demand */ sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGHUP, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } /* install SIGUSR1 handler to close/re-open logfile (if logfile being used) */ sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGUSR1, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } /* install SIGUSR2 handler to close/re-open capture file (if capture file being used) */ sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGUSR2, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } /* install SIGCHLD handler to reap children (e.g. when alert_program_name or alert_program_name2 is specified */ sigemptyset(&sa.sa_mask); sa.sa_handler = catcher; sa.sa_flags = 0; if (sigaction(SIGCHLD, &sa, NULL) < 0) { report(LOG_ERR, "sigaction: %s", get_errmsg()); my_exit(1, 1, 1); } /* each packet we may write is the same length */ write_packet_len = LIBNET_IPV4_H + LIBNET_UDP_H + sizeof(struct bootp); if (use_8021q) { write_packet_len += LIBNET_802_1Q_H; } else { write_packet_len += LIBNET_ETH_H; } /* init all the frames we may write */ if (! init_libnet_context_queue()) { my_exit(1, 1, 1); } if (capture_file) { /* we are saving unexpected responses to a capture file */ /* open a packet capture descriptor This is NOT the one we'll actually use to read the interface to capture packets! When we call pcap_dump_open() to open a savefile, we're supposed to pass it the packet capture descriptor; that's just so pcap_dump_open() can figure out what sort of interface and snaplen are involved -- it needs to squirrel that info away to write a good header into the dump file, and to know how many bytes to write for each packet. The problem is that we're not going to keep capturing from a single packet capture descriptor; instead we open and close packet capture descriptors repeatedly, to allow us to NOT be listening when we don't need to (and also to vary some capture parms based on the changing cf file). To avoid having to open and close our dump file repeatedly (each time writing a *unique* dump file), we will open a SECOND packet capture descriptor 'pd_template' which we'll keep open for the program's life. That one will share the key characteristics with the ones we actually use to capture packets (i.e. interface and snaplen). Note this implies we must not let the user change those values during the run. */ pcap_errbuf[0] = '\0'; /* so we can tell if a warning was produced on success */ if ((pd_template = pcap_open_live(ifname, snaplen, 0, 1, pcap_errbuf)) == NULL) { report(LOG_ERR, "pcap_open_live %s: %s", ifname, pcap_errbuf2); my_exit(1, 1, 1); } if (pcap_errbuf[0] != '\0') /* even on success, a warning may be produced */ report(LOG_WARNING, "pcap_open_live %s: %s", ifname, pcap_errbuf); /* XXX Note pcap_dump_open() does does an fopen() on capture_file with mode "w", and writes a pcap header to it. It's up to the user to ensure the capture_file specified is safe. Since we are probably running as root, opportunities for abuse abound. The user must be careful to specify a capture_file located in a directory no one else may write to, and to ensure the capture_file does not exist, or if it does, it safe to overwrite. */ if ((pcap_dump_d = pcap_dump_open(pd_template, capture_file)) == NULL) { report(LOG_ERR, "pcap_dump_open: %s", pcap_geterr(pd_template)); my_exit(1, 1, 1); } } while (1) { /* MAIN EVENT LOOP */ int promiscuous; libnet_t *l; /* to iterate through libnet context queue */ /* struct pcap_stat ps; */ /* to hold pcap stats */ if (debug > 10) report(LOG_DEBUG, "starting new cycle"); /* handle signals. If this is not the first time through the main event loop, this is where signals that arrived while we were sleeping get handled. Note that we also handle signals at a second location in the main event loop (after capturing responses before we go to sleep). */ if (quit_requested) { /* set by signal handler */ if (debug > 1) report(LOG_INFO, "received request to quit"); break; } if (reopen_log_file) { /* set by signal handler */ close_and_reopen_log_file(logfile_name); reopen_log_file = 0; } if (reopen_capture_file) { /* set by signal handler */ close_and_reopen_capture_file(); reopen_capture_file = 0; } if (reread_config_file) { /* set by signal handler */ reconfigure(write_packet_len); reread_config_file = 0; } /* We open (and later close) the packet capture descriptor on each packet sent (rather than just once for the entire program) because a change in the configfile (specifically, 'chaddr') can change whether we need to listen promiscuously or not, and GetResponse_wait_time(). And we need to do it for each sent packet (as opposed to each cycle) to be able to specify a fresh timeout each time, apparently (???). Too, if we are listening promiscuously and the cycle_time is long, we'd prefer to leave the interface in promiscuous mode as little as possible, since that can affect the host's performance. */ /* If we're going to claim a chaddr different than my_eaddr, some of the responses may come back to chaddr (as opposed to my_eaddr or broadcast), so we'll need to listen promiscuously. If we're going to claim an ether_src different than my_eaddr, in theory that should make no difference; bootp/dhcp servers should rely on chaddr, not ether_src. Still, it's possible there's a server out there that does it wrong, and might therefore mistakenly send responses to ether_src. So lets also listen promiscuously if ether_src != my_eaddr. */ if (bcmp(GetChaddr(), &my_eaddr, sizeof(struct ether_addr)) || bcmp(GetEther_src(), &my_eaddr, sizeof(struct ether_addr))) promiscuous = 1; else promiscuous = 0; for (l = libnet_cq_head(); libnet_cq_last(); l = libnet_cq_next()) { /* write one flavor packet and listen for answers */ int pcap_rc; int pcap_open_retries; /* We set up for packet capture BEFORE writing our packet, to minimize the delay between our writing and when we are able to start capturing. (I cannot tell from the pcap(3) doc whether packets matching the filter that arrive after pcap_open_live() and before pcap_loop() are actually captured and buffered. I assume not, if only because that would imply that until calling pcap_setfilter(), we'd be capturing and buffering more than we wanted! */ /* open packet capture descriptor */ /* XXX On Solaris 7, sometimes pcap_open_live() fails with a message like: pcap_open_live qfe0: recv_ack: info unexpected primitive ack 0x8 It's not clear what causes this, or what the 0x8 code indicates. The error appears to be transient; retrying sometimes will work, so I've wrapped the call in a retry loop. I've also added a delay after each failure; perhaps the failure has something to do with the fact that we call pcap_open_live() so soon after pcap_close() (for the second and succeeding packets in each cycle); adding a delay might help in that case. */ pcap_open_retries = PCAP_OPEN_LIVE_RETRY_MAX; while (pcap_open_retries--) { pcap_errbuf[0] = '\0'; /* so we can tell if a warning was produced on success */ if ((pd = pcap_open_live(ifname, snaplen, promiscuous, GetResponse_wait_time(), pcap_errbuf)) != NULL) { break; /* success */ } else { /* failure */ if (pcap_open_retries == 0) { report(LOG_DEBUG, "pcap_open_live(%s): %s; retry count (%d) exceeded, giving up", ifname, pcap_errbuf, PCAP_OPEN_LIVE_RETRY_MAX); my_exit(1, 1, 1); } else { if (debug > 1) report(LOG_DEBUG, "pcap_open_live(%s): %s; will retry", ifname, pcap_errbuf); sleep(PCAP_OPEN_LIVE_RETRY_DELAY); /* before next retry */ } } /* failure */ } if (pcap_errbuf[0] != '\0') /* even on success, a warning may be produced */ report(LOG_WARNING, "pcap_open_live(%s): succeeded but with warning: %s", ifname, pcap_errbuf); /* make sure this interface is ethernet */ linktype = pcap_datalink(pd); if (linktype != DLT_EN10MB) { report(LOG_ERR, "interface %s link layer type %d not ethernet", ifname, linktype); my_exit(1, 1, 1); } /* compile bpf filter to select just udp/ip traffic to udp port bootpc */ if (pcap_compile(pd, &bpf_code, "udp dst port bootpc", 1, netmask) < 0) { report(LOG_ERR, "pcap_compile: %s", pcap_geterr(pd)); my_exit(1, 1, 1); } /* install compiled filter */ if (pcap_setfilter(pd, &bpf_code) < 0) { report(LOG_ERR, "pcap_setfilter: %s", pcap_geterr(pd)); my_exit(1, 1, 1); } if (socket_receive_timeout_feature) set_pcap_timeout(pd); /* write one packet */ if (debug > 10) report(LOG_DEBUG, "writing packet %s", (char *) libnet_cq_getlabel(l)); if ((bytes_written = libnet_write(l)) == -1) { report(LOG_ERR, "libnet_write failed: %s", libnet_geterror(l)); } else { if (bytes_written < write_packet_len) report(LOG_ERR, "libnet_write: bytes written: %d (expected %d)", bytes_written, write_packet_len); } /* XXX Are response packets lost if they arrive between our call (above) to libnet_write(), and our call (below) to pcap_dispatch() ? It's a long enough window for packets to arrive, especially if debugging is high enough that we log a message below. */ /* listen for all replies until the timeout specified in pcap_open_live() expires. For each reply, 'process_response' is called with ptrs to the reply packet. XXX If you didn't specify enough buffer space, it appears that the packets that didn't fit are silently lost; pcap_dispatch() doesn't provide any indication via a negative rc, and even pcap_stats() doesn't show these as drops, so we can't provide some indication to the user that the buffer specified is too small. */ if (debug > 10) report(LOG_DEBUG, "listening for answers for %d milliseconds", GetResponse_wait_time()); /* XXX I often find that pcap_dispatch() returns well before the timeout specified earlier. I ensure that there's no alarm() still left over before we start, and also ensure we don't get interrupted by SIGCHLD (possible since process_response() could fork an alert_program or alert_program2 child). But we STILL often return from pcap_dispatch() too soon! April 2001: An update to the pcap(3) man page around version 0.6 (?), along with postings on the tcpdump workers mailing list explains what's going on. The timeout specified in pcap_open_live() isn't a timeout in the sense one might expect. The pcap_dispatch() call can return sooner than expected (even immediately), or if no packets are received, might never return at all; the behavior is platform-dependant. I don't have a way to work around this issue; it means this program just won't work reliably (or at all) on some platforms. */ alarm(0); /* just in case a previous alarm was still left */ sigemptyset(&new_sigset); sigaddset(&new_sigset, SIGCHLD); sigprocmask(SIG_BLOCK, &new_sigset, &old_sigset); /* block SIGCHLD */ pcap_rc = pcap_dispatch(pd, -1, process_response, NULL); sigprocmask(SIG_SETMASK, &old_sigset, NULL); /* unblock SIGCHLD */ if (pcap_rc < 0) report(LOG_ERR, "pcap_dispatch(): %s", pcap_geterr(pd)); else if (debug > 10) report(LOG_DEBUG, "done listening, captured %d packets", pcap_rc); /* I was hoping that perhaps pcap_stats() would return a nonzero number of packets dropped when the buffer size specified to pcap_open_live() turns out to be too small -- so we could provide some indication that you need to specify a larger buffer. Alas, even in that situation the ps_drop field is still 0. * * if (pcap_stats(pd, &ps) < 0) { * report(LOG_ERR, "pcap_stats(): %s", pcap_geterr(pd)); * } else if (debug > 10) { * report(LOG_DEBUG, "pcap_stats: packets received %u, packets dropped %u", ps.ps_recv, ps.ps_drop); * } */ /* close packet capture descriptor */ pcap_close(pd); /* check for 'quit' request after each packet, since waiting until end of probe cycle would impose a substantial delay. */ if (quit_requested) { /* set by signal handler */ if (debug > 1) report(LOG_INFO, "received request to quit"); break; } /* don't check for requests to re-read configuration file here, because that sort of change requires we construct new packets to send, not something to do in the middle of a cycle... and can alter the response_timeout value used within the cycle. */ /* don't check for requests to close-and-reopen the logfile, or close-and-reopen the capture file here. (should we?) */ } /* write each flavor packet and listen for answers */ /* Cleanup from iterating through the context queue. */ if (!libnet_cq_end_loop()) { report(LOG_ERR, "libnet_cq_end_loop() failed"); my_exit(1, 1, 1); } if (debug > 10) report(LOG_DEBUG, "cycle complete, going to sleep for %d seconds", GetCycle_time()); /* Although we already handled signals at the top of the main event loop, we do so again here, because the time through the main loop can be substantial due to the time we capture packets, and signals may have come in...we don't want to postpone handling them until we finish sleeping as well. */ if (quit_requested) { /* set by signal handler */ if (debug > 1) report(LOG_INFO, "received request to quit"); break; } if (reopen_log_file) { /* set by signal handler */ close_and_reopen_log_file(logfile_name); reopen_log_file = 0; } if (reopen_capture_file) { /* set by signal handler */ close_and_reopen_capture_file(); reopen_capture_file = 0; } if (reread_config_file) { /* set by signal handler */ reconfigure(write_packet_len); reread_config_file = 0; } /* We allow must signals that come in during our sleep() to interrupt us. E.g. we want to cut short our sleep when we're signalled to exit. But we must block SIGCHLD during our sleep. That's because if we forked an alert_program or alert_program2 child above, its termination will likely happen while we're sleeping; we'll end up being interrupted by the SIGCHLD almost immediately, cutting short our sleep and forcing us to proceed to the next probe cycle far too soon. */ alarm(0); /* cancel any alarm left over, just in-case something's left by libpcap */ time_to_sleep = GetCycle_time(); sigemptyset(&new_sigset); sigaddset(&new_sigset, SIGCHLD); sigprocmask(SIG_BLOCK, &new_sigset, &old_sigset); /* block SIGCHLD */ sleep(time_to_sleep); sigprocmask(SIG_SETMASK, &old_sigset, NULL); /* unblock SIGCHLD */ alarm(0); /* cancel any alarm left over, just in case we were interrupted */ } /* MAIN EVENT LOOP */ /* we only reach here after receiving a signal requesting we quit */ if (pd_template) /* only used if a capture file requested */ pcap_close(pd_template); my_exit(0, 1, 1); } void process_response(u_char *user, const struct pcap_pkthdr *pkthdr, const u_char *packet) { /* Process one response packet. We are called by pcap_dispatch() for each packet it captures. When we return, control returns to pcap_dispatch() so it can continue capturing packets. */ struct ether_header *ether_header; /* access ethernet header */ struct ip *ip_header; /* access ip header */ bpf_u_int32 ether_len; /* bpf_u_int32 from pcap.h */ struct udphdr *udp_header; /* access UDP header */ struct bootp *bootp_pkt; /* access bootp/dhcp packet */ int bootp_min_len; int isYiaddrInLeaseNetworksOfConcern = 0; /* boolean */ char yiaddr_network_of_concern_addenda[STR_MAXLEN]; int isLegalServer; /* boolean */ /* fields parsed out from packet*/ struct ether_addr ether_dhost, ether_shost; struct in_addr ip_src, ip_dst, yiaddr; /* string versions of same */ char ether_dhost_str[MAX_ETHER_ADDR_STR], ether_shost_str[MAX_ETHER_ADDR_STR]; char ip_src_str[MAX_IP_ADDR_STR], ip_dst_str[MAX_IP_ADDR_STR], yiaddr_str[MAX_IP_ADDR_STR]; int ip_header_len_bytes; int udp_len; /* XXX why does udp.h declare this as signed? */ int udp_payload_len; char *alert_program_name, *alert_program_name2; if (debug > 10) report(LOG_DEBUG, " captured a packet"); if ((pkthdr->caplen < (ether_len = pkthdr->len)) && (debug > 1)) { report(LOG_WARNING, "interface %s, packet truncated (ethernet frame length %u, captured %u), ignoring", ifname, ether_len, pkthdr->caplen); return; } if ((ether_len < sizeof(sizeof(struct ether_header))) && (debug > 1)) { report(LOG_WARNING, "interface %s, short packet (got %d bytes, smaller than an Ethernet header)", ifname, ether_len); return; } /* we use ether_header to access the Ethernet header */ ether_header = (struct ether_header *) packet; /* parse fields out of ethernet header for easier access */ bcopy(&(ether_header->ether_dhost), ðer_dhost, sizeof(ether_dhost)); bcopy(&(ether_header->ether_shost), ðer_shost, sizeof(ether_shost)); /* create printable versions of the fields we parsed above */ bcopy(ether_ntoa(ðer_dhost), ðer_dhost_str, sizeof(ether_dhost_str)); bcopy(ether_ntoa(ðer_shost), ðer_shost_str, sizeof(ether_shost_str)); if (debug > 10) report(LOG_DEBUG, " interface %s, from ether %s to %s", ifname, ether_shost_str, ether_dhost_str); if (ether_len < sizeof(sizeof(struct ether_header)) + sizeof(struct ip)) { report(LOG_WARNING, "interface %s, ether src %s: short packet (got %d bytes, smaller than IP header in Ethernet)", ifname, ether_shost_str, ether_len); return; } /* we use ip_header to access the IP header */ ip_header = (struct ip *) (packet + sizeof(struct ether_header)); /* parse fields out of ip header for easier access */ bcopy(&(ip_header->ip_src), &ip_src, sizeof(ip_header->ip_src)); bcopy(&(ip_header->ip_dst), &ip_dst, sizeof(ip_header->ip_dst)); /* create printable versions of the fields we parsed above */ bcopy(inet_ntoa(ip_src), &ip_src_str, sizeof(ip_src_str)); bcopy(inet_ntoa(ip_dst), &ip_dst_str, sizeof(ip_dst_str)); if (debug > 10) report(LOG_DEBUG, " from IP %s to %s", ip_src_str, ip_dst_str); ip_header_len_bytes = ip_header->ip_hl << 2; /* Repeat the packet size check (through IP header), but taking into account ip_header_len_bytes */ if (ether_len < sizeof(sizeof(struct ether_header)) + ip_header_len_bytes) { report(LOG_WARNING, "interface %s, short packet (got %d bytes, smaller than IP header in Ethernet)", ifname, ether_len); return; } /* we use udp_header to access the UDP header */ udp_header = (struct udphdr *) (packet + sizeof(struct ether_header) + ip_header_len_bytes); if (ether_len < sizeof(sizeof(struct ether_header)) + ip_header_len_bytes + sizeof(struct udphdr)) { report(LOG_WARNING, "interface %s ether src %s: short packet (got %d bytes, smaller than UDP/IP header in Ethernet)", ifname, ether_shost_str, ether_len); return; } udp_len = udp_header->uh_ulen; if (udp_len < sizeof(struct udphdr)) { report(LOG_WARNING, "interface %s, ether src %s: invalid UDP packet (UDP length %d, smaller than minimum value %d)", ifname, ether_shost_str, udp_len, sizeof(struct udphdr)); return; } udp_payload_len = udp_len - sizeof(struct udphdr); /* The smallest bootp/dhcp packet (the UDP payload) is actually smaller than sizeof(struct bootp), as it's possible for DHCP replies to have shorter bootp_options fields. */ bootp_min_len = sizeof(struct bootp) - BOOTP_OPTIONS_LEN; if (udp_payload_len < bootp_min_len) { report(LOG_WARNING, "interface %s, ether src %s: invalid BootP/DHCP packet (UDP payload length %d, smaller than minimal BootP/DHCP payload %d)", ifname, ether_shost_str, udp_payload_len, bootp_min_len); return; } /* we use bootp_pkt to access the bootp/dhcp packet */ bootp_pkt = (struct bootp *) (packet + sizeof(struct ether_header) + ip_header_len_bytes + sizeof(struct udphdr)); /* Make sure the packet is in response to our query, otherwise ignore it. Our query had bootp_htype=HTYPE_ETHER, bootp_hlen=HLEN_ETHER, and bootp_chaddr=GetChaddr(). Any reply with different values isn't in response to our probe, so we must ignore it. */ if (bootp_pkt->bootp_htype != HTYPE_ETHER) { if (debug > 10) report(LOG_DEBUG, " bootp_htype (%d) != HTYPE_ETHER (%d), so this is not a response to my probe, ignoring", bootp_pkt->bootp_htype, HTYPE_ETHER); return; } if (bootp_pkt->bootp_hlen != HLEN_ETHER) { if (debug > 10) report(LOG_DEBUG, " bootp_hlen (%d) != HLEN_ETHER (%d), so this is not a response to my probe, ignoring", bootp_pkt->bootp_hlen, HLEN_ETHER); return; } if (bcmp(bootp_pkt->bootp_chaddr, GetChaddr(), HLEN_ETHER)) { if (debug > 10) { struct ether_addr ether_tmp; char ether_tmp_str[MAX_ETHER_ADDR_STR]; /* create printable version of bootp_pkt->bootp_chaddr */ bcopy(&(bootp_pkt->bootp_chaddr), ðer_tmp, sizeof(ether_tmp)); bcopy(ether_ntoa(ðer_tmp), ðer_tmp_str, sizeof(ether_tmp_str)); report(LOG_DEBUG, " bootp_chaddr (%s) != my chaddr (%s), so this is not a response to my probe, ignoring", ether_tmp_str, ether_ntoa(GetChaddr())); } return; } /* at this point we know the packet is a response to my probe */ /* Determine if the response is from an expected server. */ isLegalServer = 1; /* start by assuming it is expected. */ if (!isLegalServersMember(&ip_src)) { if (debug > 10) report(LOG_DEBUG, " ip_src %s is not a legal server", ip_src_str); isLegalServer = 0; } if (!isLegalServerEthersrcsMember(ðer_shost)) { if (debug > 10) report(LOG_DEBUG, " ether_shost %s is not a legal server", ether_shost_str); isLegalServer = 0; } if (isLegalServer) { if (debug > 10) report(LOG_DEBUG, " this is a legal server, ignoring"); return; } /* at this point we know the responder is unexpected */ /* parse yiaddr out of bootp packet easier access */ bcopy(&(bootp_pkt->bootp_yiaddr), &yiaddr, sizeof(bootp_pkt->bootp_yiaddr)); /* create printable version of the field we parsed above */ bcopy(inet_ntoa(yiaddr), &yiaddr_str, sizeof(yiaddr_str)); if (yiaddr.s_addr != INADDR_ANY) { if (isInLeaseNetworksOfConcern(&yiaddr)) { isYiaddrInLeaseNetworksOfConcern = 1; if (debug > 10) report(LOG_DEBUG, " yiaddr %s is in inside a lease_network_of_concern", yiaddr_str); } } /* report unexpected server */ /* Producing this log message is our entire reason for existance. */ /* The log message may end with an addenda to further alert you that the yiaddr was inside a network of concern. Prepare that possible addenda first. */ if (isYiaddrInLeaseNetworksOfConcern) { snprintf(yiaddr_network_of_concern_addenda, sizeof(yiaddr_network_of_concern_addenda), " Response also contains yiaddr %s inside a network of concern.", yiaddr_str); } else { yiaddr_network_of_concern_addenda[0] = '\0'; } report(LOG_WARNING, "received unexpected response on interface %s from BootP/DHCP server with IP source %s (ether src %s).%s", ifname, ip_src_str, ether_shost_str, yiaddr_network_of_concern_addenda); /* also save the response packet if we are writing to capture file */ if (pcap_dump_d) { pcap_dump((u_char *) pcap_dump_d, pkthdr, packet); } /* Also call the alert_program_name if the user has specified one. */ /* We must fetch it anew as it may have changed due to configfile change */ alert_program_name = GetAlert_program_name(); if (alert_program_name) { /* We run it in a child, so we don't block waiting for it to return. */ pid_t pid; if ((pid = fork()) < 0) { report(LOG_ERR, "can't fork to run %s: %s", alert_program_name, get_errmsg()); /* just skip running alert_program_name, but keep running since we're still fine */ } else if (pid == 0) { /* child */ /* We do allow child to inherit fd 0,1,2. If we're logging to stderr, we want child to have it too. */ if (sockfd) /* We don't want child to inherit the general purpose dgram socket */ close(sockfd); libnet_cq_destroy(); /* We don't want child to inherit to inherit libnet context queue */ if (pd) /* We don't want child to inherit packet capture descriptor, nor packet dumpfile descriptor. */ pcap_close(pd); if (pcap_dump_d) pcap_dump_close(pcap_dump_d); if (execl(alert_program_name, alert_program_name, prog, ifname, ip_src_str, ether_shost_str, (char *) 0 ) < 0) { report(LOG_ERR, "can't execute alert_program_name '%s': %s", alert_program_name, get_errmsg()); exit(0); /* child exits */ } } } /* if (alert_program_name) */ /* Also call the alert_program_name2 if the user has specified one. */ /* We must fetch it anew as it may have changed due to configfile change */ alert_program_name2 = GetAlert_program_name2(); if (alert_program_name2) { /* We run it in a child, so we don't block waiting for it to return. */ pid_t pid; if ((pid = fork()) < 0) { report(LOG_ERR, "can't fork to run %s: %s", alert_program_name2, get_errmsg()); /* just skip running alert_program_name2, but keep running since we're still fine */ } else if (pid == 0) { /* child */ int execl_rc; /* We do allow child to inherit fd 0,1,2. If we're logging to stderr, we want child to have it too. */ if (sockfd) /* We don't want child to inherit the general purpose dgram socket */ close(sockfd); libnet_cq_destroy(); /* We don't want child to inherit to inherit libnet context queue */ if (pd) /* We don't want child to inherit packet capture descriptor, nor packet dumpfile descriptor. */ pcap_close(pd); if (pcap_dump_d) pcap_dump_close(pcap_dump_d); if (isYiaddrInLeaseNetworksOfConcern) { /* include "-y yiaddr' option */ execl_rc = execl(alert_program_name2, alert_program_name2, "-p", prog, "-I", ifname, "-i", ip_src_str, "-m", ether_shost_str, "-y", yiaddr_str, (char *) 0 ); } else { /* do not include "-y yiaddr' option */ execl_rc = execl(alert_program_name2, alert_program_name2, "-p", prog, "-I", ifname, "-i", ip_src_str, "-m", ether_shost_str, (char *) 0 ); } if (execl_rc < 0) { report(LOG_ERR, "can't execute alert_program_name2 '%s': %s", alert_program_name2, get_errmsg()); exit(0); /* child exits */ } } } /* if (alert_program_name2) */ return; } void set_pcap_timeout(pcap_t *pd) { /* Set a receive timeout on the socket underlying the pcap descriptor. Ideally, this would not be necessary, as we already passed a timeout to pcap_open_live(). But as the pcap(3) man page explains, that timeout is not supported on some platforms. In those cases, applying a timeout directly to the underlying socket might help. */ struct timeval timeout; int time_wait; time_wait = GetResponse_wait_time(); timeout.tv_sec = time_wait / 1000; timeout.tv_usec = (time_wait % 1000) * 1000; if(setsockopt(pcap_fileno(pd), SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout)) < 0) { report(LOG_ERR, "set_pcap_timeout(): unable to set receive timeout: %s", get_errmsg()); my_exit(1, 1, 1); } } void reconfigure(const int write_packet_len) { /* Perform all necessary functions to handle a request to reconfigure. Must not be called until after initial configuration is complete. */ int i; if (! read_configfile(config_file)) { my_exit(1, 1, 1); } /* Contents of the packets we send may need to change as a result of change to the configuration. Free the packets we've already constructed, and build new ones. */ if (! init_libnet_context_queue()) { my_exit(1, 1, 1); } return; } void close_and_reopen_capture_file(void) { /* Close and re-open capture file. If we are not capturing to a file, return silently. Returns on success, exits on error. Note that since pcap_dump_open() opens the file with mode "w" and writes a pcap header to it, if you want to keep the existing capture file's contents, you must move the existing capture file aside before this routine is called. In practice, that means you move the file aside first, then send a signal triggering the close and re-open. */ if (pcap_dump_d) { /* a capture file was already open */ if (debug > 1) report(LOG_NOTICE, "closing capture file"); /* close */ pcap_dump_close(pcap_dump_d); /* re-open */ /* XXX Note pcap_dump_open() does does an fopen() on capture_file with mode "w", and writes a pcap header to it. It's up to the user to ensure the capture_file specified is safe. Since we are probably running as root, opportunities for abuse abound. The user must be careful to specify a capture_file located in a directory no one else may write to, and to ensure the capture_file does not exist, or if it does, it safe to overwrite. */ if ((pcap_dump_d = pcap_dump_open(pd_template, capture_file)) == NULL) { report(LOG_ERR, "close_and_reopen_capture_file: pcap_dump_open: %s", pcap_geterr(pd_template)); my_exit(1, 1, 1); } if (debug > 1) report(LOG_NOTICE, "re-opened capture file"); } return; } void catcher(int sig) { /* Signal catcher. */ if ((sig == SIGINT) || (sig == SIGTERM) || (sig == SIGQUIT)) { /* quit gracefully */ quit_requested = 1; return; } else if (sig == SIGHUP) { /* re-read config file */ /* Doing the reread while in the signal handler is way too dangerous. We'll do it at the start or end of the next main event loop. */ reread_config_file = 1; return; } else if (sig == SIGUSR1) { /* close and re-open logfile (if logfile being used) */ /* Doing the close and reopen in the signal handler is way too dangerous. We'll do it at the start or end of the next main event loop. */ reopen_log_file = 1; return; } else if (sig == SIGUSR2) { /* close and re-open capture file (if capture file being used) */ /* Doing the close and reopen in the signal handler is way too dangerous. We'll do it at the start or end of the next main event loop. */ reopen_capture_file = 1; return; } else if (sig == SIGCHLD) { /* reap, e.g. calls to user-specified alert_program_name */ int stat, errno_save; errno_save = errno; while ((waitpid(-1, &stat, WNOHANG)) > 0) ; errno = errno_save; return; } return; } void cleanup(void) { /* Cleanup tasks at exit. */ /* Destroy all the libnet contexts (if any), and the context queue (if any). */ libnet_cq_destroy(); if (pcap_dump_d) /* capture file is open */ pcap_dump_close(pcap_dump_d); if (pid_file) unlink(pid_file); /* may fail if file was never written */ return; } void my_exit(int exit_status, int do_cleanup, int do_log) { /* A wrapper for exit(). */ if (do_log) report(LOG_NOTICE, "exiting"); if (do_cleanup) cleanup(); exit(exit_status); } void usage(void) { /* Print usage message and return. */ fprintf(stderr, "Usage: %s [-c config_file] [-d debuglevel] [-f] [-h] [-l log_file] [-o capture_file] [-p pid_file] [-Q vlan_id] [-s capture_bufsize] [-T] [-v] [-w cwd] interface_name\n", prog); fprintf(stderr, " -c config_file override default config file [%s]\n", CONFIG_FILE); fprintf(stderr, " -d debuglevel enable debugging at specified level\n"); fprintf(stderr, " -f don't fork (only use for debugging)\n"); fprintf(stderr, " -h display this help message then exit\n"); fprintf(stderr, " -l log_file log to file instead of syslog\n"); fprintf(stderr, " -o capture_file enable capturing of unexpected answers\n"); fprintf(stderr, " -p pid_file override default pid file [%s]\n", PID_FILE); fprintf(stderr, " -Q vlan_id tag outgoing frames with an 802.1Q VLAN ID\n"); fprintf(stderr, " -s capture_bufsize override default capture bufsize [%d]\n", CAPTURE_BUFSIZE); fprintf(stderr, " -T enable the socket receive timeout feature\n"); fprintf(stderr, " -v display version number then exit\n"); fprintf(stderr, " -w cwd override default working directory [%s]\n", CWD); fprintf(stderr, " interface_name name of ethernet interface\n"); return; } dhcp-probe-1.3.0/src/Makefile.am0000644000175100017510000000061411164405072016414 0ustar metro-gimetro-gi## Process this file with automake to produce Makefile.in sbin_PROGRAMS = dhcp_probe dhcp_probe_SOURCES = bootp.c configfile.c dhcp_probe.c \ get_myeaddr.c get_myipaddr.c \ daemonize.c open_max.c report.c utils.c \ bootp.h configfile.h dhcp_probe.h \ defaults.h defs.h \ get_myeaddr.h get_myipaddr.h \ daemonize.h open_max.h report.h utils.h LDADD = $(top_builddir)/lib/libreplace.a dhcp-probe-1.3.0/src/get_myipaddr.h0000644000175100017510000000022711164405072017201 0ustar metro-gimetro-gi#ifndef GET_MYIPADDR_H #define GET_MYIPADDR_H int get_myipaddr(int sockfd, char *ifname, struct in_addr *my_ipaddr); #endif /* not GET_MYIPADDR_H */ dhcp-probe-1.3.0/src/bootp.h0000644000175100017510000000453311164405072015660 0ustar metro-gimetro-gi#ifndef BOOTP_H #define BOOTP_CHADDR_LEN 16 #define BOOTP_SNAME_LEN 64 #define BOOTP_FILE_LEN 128 #define BOOTP_OPTIONS_LEN 64 /* A bootp packet */ struct bootp { uint8_t bootp_op; /* opcode */ uint8_t bootp_htype; /* hardware address type */ uint8_t bootp_hlen; /* hardware address length */ uint8_t bootp_hops; /* hop count */ uint32_t bootp_xid; /* transaction ID */ uint16_t bootp_secs; /* seconds elapsed since boot started */ uint16_t bootp_flags; /* bit flags */ struct in_addr bootp_ciaddr; /* client IP addr */ struct in_addr bootp_yiaddr; /* your IP addr */ struct in_addr bootp_siaddr; /* next server IP addr */ struct in_addr bootp_giaddr; /* relay agent IP addr */ unsigned char bootp_chaddr[BOOTP_CHADDR_LEN]; /* client hardware address */ char bootp_sname[BOOTP_SNAME_LEN]; /* server host name */ char bootp_file[BOOTP_FILE_LEN]; /* boot file name */ unsigned char bootp_options[BOOTP_OPTIONS_LEN]; /* options */ }; /* op codes */ #define BOOTREQUEST 1 /* DHCP message types */ #define DHCPDISCOVER 1 #define DHCPREQUEST 3 /* htype values */ #define HTYPE_ETHER 1 /* hlen values */ #define HLEN_ETHER 6 #define PORT_BOOTPS 67 #define PORT_BOOTPC 68 /* various codes for the 'options' field */ #define VENDOR_OPTION_VM_COOKIE_RFC1048 { 99, 130, 83, 99 } #define VENDOR_OPTION_END { 255 } /* the DHCP Message Type option consists of the option code, a length byte == 1, and message type code */ #define VENDOR_OPTION_DHCPMESSAGETYPE 53 #define VENDOR_OPTION_DHCPMESSAGETYPE_DHCPDISCOVER 1 #define VENDOR_OPTION_DHCPMESSAGETYPE_DHCPREQUEST 3 #define VENDOR_OPTION_DHCPDISCOVER { VENDOR_OPTION_DHCPMESSAGETYPE, 1, VENDOR_OPTION_DHCPMESSAGETYPE_DHCPDISCOVER } #define VENDOR_OPTION_DHCPREQUEST { VENDOR_OPTION_DHCPMESSAGETYPE, 1, VENDOR_OPTION_DHCPMESSAGETYPE_DHCPREQUEST } #define VENDOR_OPTION_REQUESTED_IP_ADDRESS 50 #define VENDOR_OPTION_SERVERID 54 #define VENDOR_OPTION_CLIENTID 61 int init_libnet_context_queue(void); struct bootp *build_dhcp_packet(enum dhcp_flavor_t flavor); int build_frame(libnet_t *l, struct bootp *udp_payload); void insert_option(unsigned char **destination, unsigned char *option, int len); void init_option_clientid(void); void init_option_serverid(void); void init_option_requestedipaddr(void); #endif /* not BOOTP_H */ dhcp-probe-1.3.0/aclocal.m40000644000175100017510000007733011164405072015442 0ustar metro-gimetro-gi# generated automatically by aclocal 1.10.1 -*- Autoconf -*- # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, # 2005, 2006, 2007, 2008 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. m4_ifndef([AC_AUTOCONF_VERSION], [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl m4_if(AC_AUTOCONF_VERSION, [2.63],, [m4_warning([this file was generated for autoconf 2.63. 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We just wanted to have am__tar # and am__untar set. test -n "${am_cv_prog_tar_$1}" && break # tar/untar a dummy directory, and stop if the command works rm -rf conftest.dir mkdir conftest.dir echo GrepMe > conftest.dir/file AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) rm -rf conftest.dir if test -s conftest.tar; then AM_RUN_LOG([$am__untar /dev/null 2>&1 && break fi done rm -rf conftest.dir AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) AC_MSG_RESULT([$am_cv_prog_tar_$1])]) AC_SUBST([am__tar]) AC_SUBST([am__untar]) ]) # _AM_PROG_TAR m4_include([m4/ac_check_func_proto.m4]) m4_include([m4/ac_check_struct_for.m4]) m4_include([m4/ist_require_libnet.m4]) m4_include([m4/ist_require_pcap.m4]) m4_include([m4/ist_sys_socket_ioctls_use_streams.m4]) m4_include([m4/sys_errlist.m4]) dhcp-probe-1.3.0/README0000644000175100017510000000452711164405072014460 0ustar metro-gimetro-giREADME for dhcp_probe This is dhcp_probe. dhcp_probe is intended to be used by a network administrator to locate unknown BootP and DHCP servers on a directly-attached network. This software was created by the Network Systems Group at Princeton University's Office of Information Technology, networking at princeton dot edu. It was written by Irwin Tillman. It is available from: http://www.net.princeton.edu/software/dhcp_probe/ This version runs on Solaris 9 on SPARC, compiled with gcc. This version supports only Ethernet interfaces. dhcp_probe is intended for use by a network administrator. Before running dhcp_probe on any network other than one for which you are responsible, contact that network's administrator to learn if it is acceptable for you to run this software on that network. Running this software may violate on a network where you don't have permission to do so may violate that network's acceptable use policy. It was intended for our use at Princeton University, so was written to operate on the platform(s) we use, with the features we need. As others have asked for the software, we've made it generally available, however, we do not have the resources available to port it to additional platforms or add features. See the file INSTALL.dhcp_probe for installation instructions. Generic building and installation instructions are in INSTALL. Platform-specific notes are in PLATFORMS. The file NEWS describes recent user-visible changes to dhcp_probe. The product is free, however, it includes code that was published in other programs; those parts are subject to copyright and certain restrictions. See the file COPYING for specifics. This software is provided "as is" and any express or implied warranties, including, but not limited to, the implied warranties of mechantability and fitness for a particular purpose are disclaimed. In no event shall the authors or Princeton University be liable for any direct, indirect, incidental, special exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. dhcp-probe-1.3.0/INSTALL.dhcp_probe0000644000175100017510000001566111164405072016736 0ustar metro-gimetro-giInstalling dhcp_probe Note that the file INSTALL contains generic build and installation instructions; it supplements this file (specifically, the steps involving 'configure', 'make', and 'make install'). The file PLATFORMS contains platform-specific notes. dhcp_probe is intended for use by a network administrator. Before running dhcp_probe on any network other than one for which you are responsible, contact that network's administrator to learn if it is acceptable for you to run this software on that network. Running this software may violate on a network where you don't have permission to do so may violate that network's acceptable use policy. --- 1. Obtain and install libpcap, the packet capture library. It is available from http://www.tcpdump.org More information about which versions of libpcap the program has been successfully used with (and whether any versions should be avoided), may appear in the PLATFORMS file. If libpcap isn't supported on your platform, you can't use dhcp_probe. Libpcap must be installed to compile dhcp_probe; we assume we'll find the libpcap library and header files in either /usr/local or the other usual places the compiler and linker will search. If you've installed it elsewhere, when you run 'configure' below, remember to specify the --with-pcap=DIR option. -- 2. Obtain and install libnet 1.1.x, the packet writing library. It is available from http://www.packetfactory.net/libnet The current version of this program uses the libnet 1.1.x API. It does not support the libnet 1.0.x API. (The last version of this program that supported the libnet 1.0.x API was version 1.0.7.) More information about which versions of libnet the program has been successfully used with (and whether any versions should be avoided), may appear in the PLATFORMS file. If libnet 1.1.x isn't supported on your platform, you can't use dhcp_probe. Libnet must be installed to compile this program; we assume we'll find the libnet library and header files in either /usr/local or the other usual places the compiler and linker will search. If you've installed it elsewhere, when you run 'configure' below, remember to specify the --with-libnet=DIR option. Additionally, you will likely need to modify libnet to add a function that we need to use. This function is not present in libnet 1.1.x (at least through version 1.1.2.1); you will need to patch libnet. If you are using a newer version of libnet 1.1.x, you will need to examine libnet to see if the libnet_cq_end_loop() function is present. If it not present, you will need patch libnet.) In the libnet source directory, edit ./src/libnet_cq.c to add the following at the end: u_int32_t libnet_cq_end_loop() { if (! clear_cq_lock(CQ_LOCK_WRITE)) { return (0); } l_cqd.current = l_cq; return (1); } In the libnet source directory, edit ./include/libnet/libnet-functions.h to add the following at the end: u_int32_t libnet_cq_end_loop(); You will need to rebuild and install libnet to incorporate these changes. --- 3. `cd' to the directory containing the package's source code and type `./configure' to configure the package for your system. You may need to specify the --with-pcap=DIR option if configure is unable to locate the libpcap header and library. If the header and library don't share a common parent, the more specific options --with-pcap-include=DIR and --with-pcap-lib=DIR may be useful. You may need to specify the --with-libnet=DIR option if configure is unable to locate the libnet header and library. If the header and library don't share a common parent, the more specific options --with-libnet-include=DIR and --with-libnet-lib=DIR may be helpful. For example, on some platforms, libnet 1.1.x is installed below /usr/include/libnet11/ and /usr/lib/libnet11/. More information about running 'configure' is available in the INSTALL file, and you may type './configure --help' for a summary of options. Additional notes about some platforms may be in the PLATFORMS file. --- 4. Type `make' to compile the package. Ignore the following compiler warning: bootp.c: In function `build_dhcp_payload': bootp.c:80: warning: assignment from incompatible pointer type If you see an error about libnet_cq_end_loop() being unknown, see the earlier step about modifying libnet to add this function. --- 5. Type `make install' to install the package. --- 6. Create a configuration file dhcp_probe.cf in an appropriate location. The default location for this file is /etc/dhcp_probe.cf, but you can put it elsewhere, as long as you specify the new location when you run the program using the appropriate command-line option. A sample configuration file is supplied in the 'extras' directory; you may wish to use it as a template. 7. Verify that the /etc/services file (or NIS 'services' map, whichever is in-use) contains entries for 'bootpc' and 'bootps'. If they are not present, add them: bootps 67/udp # BOOTP/DHCP server bootpc 68/udp # BOOTP/DHCP client --- 8. To get started, try running it in the foreground and seeing if the debug messages seem reasonable to you. E.g. as root: /usr/local/sbin/dhcp_probe -f -d 11 hme0 The -f option prevents it from forking, and also causes all output to be sent to stderr instead of to syslog. Debuglevel 11 will produce maximum debugging. Specify the name of the interface on which to run, e.g. 'hme0'. --- 9. Arrange to have the program started automatically by root when your host starts. Some sample startup scripts are in the extras directory. Never specify the -f flag when starting the daemon from a startup script; this flag should never be specified except for debugging purposes. You'll probably want to reduce the debuglevel; a debuglevel of 0 or 1 is generally a good choice for production use. Output will be directed to syslog (using the facility specified in defaults.h); you'll want to configure syslogd to do something reasonable with it. (You can change the syslog facility name by editing defaults.h and recompiling.) Alternatively, use the -l option to specify a logfile to receive output; this prevents syslog from being used. --- 10. If you want to capture packets received from unknown servers, add the -o option when starting up, to specify a capture file. Be sure to specify a directory for the capture file that no one may write to except root; see the dhcp_probe(8) man page for details. Since the program truncates this file each time it starts, you may want to modify the script you use to start the program, to save the old version of this file before starting the program. --- 11. Any additional tools you may find useful can be found in the 'extras' directory. For example, extras/dhcp_probe_notify2 is a sample notification script that may be called via the 'alert_program_name2' configuration file statement. There are some sample startup scripts in that directory as well. See the README file in that directory. --- dhcp-probe-1.3.0/COPYING.GPL0000644000175100017510000004307611164405072015256 0ustar metro-gimetro-gi GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, Cambridge, MA 02139, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License. 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS Appendix: How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19yy name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License. dhcp-probe-1.3.0/ChangeLog0000644000175100017510000004674411164405072015361 0ustar metro-gimetro-giMon Mar 9 16:04:21 EDT 2009 Irwin Tillman (irwin at princeton dot edu) * Makefile.am: updated list of files in ./extras. * Released version 1.3.0. Thu Feb 19 10:57:58 EST 2009 Irwin Tillman (irwin at princeton dot edu) * At configure time, verify that libnet_cq_end_loop is declared as a result of including libnet.h; if not, refer user to INSTALL.dhcp_probe. * At configure time, verify that libnet_cq_end_loop is defined. If not, refer user to INSTALL.dhcp_probe. Thu Jan 29 18:47:56 EST 2009 Laurent Guignard * doc/dhcp_probe.8: escape -Q Wed Dec 24 09:43:19 EST 2008 Irwin Tillman (irwin at princeton dot edu) * README, INSTALL, doc/dhcp_probe.8: added a paragraph warning that the software should not be run on a network where you don't have permission to do so. Mon Dec 22 14:27:50 EST 2008 Irwin Tillman (irwin at princeton dot edu) * src/configfile.h, src/configfile.c, src/dhcp_probe.c, doc/dhcp_probe.8, doc/dhcp_probe.cf.5, extras/dhcp_probe.cf.sample: add support for new legal_server_ethersrc statement. Mon Dec 8 10:44:21 EST 2008 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.h: re-order dhcp_flavor_t elements, to cause the packets to get sent in the order we want. Fri Dec 5 18:16:52 EST 2008 Irwin Tillman (irwin at princeton dot edu) * src/configfile.h, src/configfile.c, src/dhcp_probe.c, doc/dhcp_probe.8, doc/dhcp_probe.cf.5, extras/dhcp_probe.cf.sample: add support for new 'alert_program_name2' configuration file statement. * extras/dhcp_probe_notify2: added, supports syntax required by the new 'alert_program_name2' configuration file statement. * extras/dhcp_probe_notify: add comment noting that this supports the old syntax used by 'alert_program_name' * extras/README: add dhcp_probe_notify2, update description for dhcp_probe_notify. * INSTALL.dhcp_probe: refer to dhcp_probe_notify2 instead of dhcp_probe_notify. * src/configfile.h, src/configfile.c, src/dhcp_probe.c, doc/dhcp_probe.8, doc/dhcp_probe.cf.5, extras/dhcp_probe.cf.sample, extras/dhcp_probe_notify2: add support for new "Lease Networks of Concern" feature. * extras/mail-throttled: when tie() fails with EAGAIN, retry several times. Add new -T and -S options to tune this. Wed Dec 3 14:38:52 EST 2008 Irwin Tillman (irwin at princeton dot edu) * extras/mail-throttled: add new -l option to also log errors, warnings, and debug output to syslog (in addition to writing to STDERR). * extras/dhcp_probe_notify: when calling mail-throttled, specify -l option. Tue Nov 18 17:23:08 EST 2008 Irwin Tillman (irwin at princeton dot edu) * src/defaults.h: change BOOTP_XID from 0x00000001 to 0x19970112, because we have seen one DHCP server that *might* ignore a DHCP client that specifies BOOTP_XID of 0x00000001. Mon Nov 10 11:20:43 EST 2008 Irwin Tillman (irwin at princeton dot edu) * src/bootp.c: when constructing a DHCP probe packet, place the DHCP Message Type option immediately after the RFC1048 cookie, because we have seen one (broken) DHCP server that *might* only answer DHCP clients if the specifies this option right after the RFC1048 cookie. Mon Oct 20 16:02:49 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * extras/dhcp_probe.startup, extras/dhcp_probe.sh, extras/README: renamed dhcp_probe.startup to dhcp_probe.startup.Solaris9 to make it clearer that this startup script is for Solaris 9. renamed dhcp_probe.sh to dhcp_probe.FreeBSD.sh to make it clearer that this startup script is for FreeBSD. * INSTALL.dhcp_probe, PLATFORMS: move some platform-specific information from INSTALL.dhcp_probe to PLATFORMS. Fri Oct 17 15:16:14 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * Upgraded autoconf 2.62 to 2.63. Fri Oct 10 15:32:41 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * Released version 1.2.2. Mon Oct 6 15:09:13 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * extras/dhcp_probe.startup: added * PLATFORMS: added Mon Oct 6 15:08:53 EDT 2008 Cristian Klein (cristi at net dot utcluj dot ro) * extras/dhcp_probe.sh added Fri Oct 3 17:00:57 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * lib/my_null_proc.c: added * configure.ac: add AC_REPLACE_FUNCS(my_null_proc) to ensure libreplace has at least one member. * configure.ac: add AC_CHECK_HEADERS(net/if_dl.h), AC_CHECK_HEADERS(ifaddrs.h), AC_CHECK_FUNCS(getifaddrs). * src/get_myeaddr.c: if SIOCGIFHWADDR is defined (e.g. Linux), obtain our Ethernet address via ioctl(SIOCGIFHWADDR); else if SIOCGARP is defined (e.g. Solaris 9), obtain our Ethernet address via ioctl(SIOCGARP), else if HAVE_GETIFADDRS is defined (e.g. *BSD), obtain our Ethernet address via getifaddrs(). Fri Oct 3 16:59:59 EDT 2008 Cristian Klein (cristi at net dot utcluj dot ro) * src/get_myipaddr.c: define max() if not defined. Thu Oct 2 14:50:31 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * configure.ac: define STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET if struct ether_addr{} has an ether_addr_octet member. define STRUCT_ETHER_ADDR_HAS_OCTET if struct ether_addr{} has an octet member. * src/bootp.c(build_frame): use ether_addr.ether_addr_octet or ether_addr.ether_addr_octet.octet based on values of STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET and STRUCT_ETHER_ADDR_HAS_OCTET. Wed Oct 1 16:45:21 EDT 2008 Andru Luvisi , Leo Weppelman (leo at weppelman dot net> * src/get_myeaddr.c: if SIOCGIFHWADDR is defined, obtain our Ethernet address via ioctl(SIOCGIFHWADDR) instead of ioctl(SIOCGARP). Wed Oct 1 15:05:18 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c(my_exit): added. Wraps a (new) log message, cleanup(), and exit(). * src/dhcp_probe.h: declare my_exit(). * src/configfile.c, src/dhcp_probe.c, src/report.c, src/utils.c: use my_exit() when it makes sense. Tue Sep 30 17:44:17 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c: use set_pcap_timeout() only when the new '-T' option ('socket receive timeout') is a specified. * doc/dhcp_probe.8: document new -T option Tue Sep 30 17:25:54 EDT 2008 Andru Luvisi * src/dhcp_probe.c(set_pcap_timeout): new * src/dhcp_probe.h: define set_pcap_timeout() Tue Sep 30 15:06:30 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * src/open_max.c, src/open_max.h: added. * src/daemonize.c: call our open_max() instead of relying on OPEN_MAX. Tue Sep 30 13:33:30 EDT 2008 Laurent Guignard (lguignard2000 at yahoo.fr), Cristian Klein (cristi at net dot utcluj dot ro) * src/defaults.h, doc/dhcp_probe.8: change default value of PID_FILE from /etc/dhcp_probe.pid to /var/run/dhcp_probe.pid. Tue Sep 30 13:33:30 EDT 2008 Laurent Guignard (lguignard2000 at yahoo.fr) * src/defs.h: declare __FAVOR_BSD so Linux uses the BSD flavor IP structure headers instead of the Linux flavor headers. Wed Sep 17 13:56:51 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * m4/ist_sys_socket_ioctls_use_streams.m4 rename cache-id from ist_sys_socket_ioctls_use_streams to ist_cv_sys_socket_ioctls_use_streams. * Upgraded autoconf 2.61 to 2.62. Upgraded automake 1.10 to 1.10.1. * config/config.guess: replace version 2006-07-02 with version 2008-01-08 from automake 1.10.1. * config/config.sub: replace version 2006-09-20 with version 2008-01-16 from automake 1.10.1. * config/depcomp: replace version 2006-10-15.18 with version 2007-03-29.01 from automake 1.10.1. * config/install-sh: replace version 2006-10-14.15 with version 2006-12-25.00 from automake 1.10.1. * config/missing: replace version 2006-05-10.23 with version 2006-05-10.23 from automake 1.10.1. Wed Sep 3 14:39:03 EDT 2008 Irwin Tillman (irwin at princeton dot edu) * INSTALL.dhcp_probe: clarify that the patch to libnet may or may not be required for versions of libnet newer than 1.1.2.1. * extras/mail-throttled: use GDBM_File. Improve error messages. * extras/dhcp_probe_notify: improve error messages. Thu Feb 28 18:27:01 EST 2008 Irwin Tillman (irwin at princeton dot edu) * Released version 1.2.1. Sat Feb 9 19:33:55 EST 2008 Irwin Tillman (irwin at princeton dot edu) * configure.ac src/defs.h: When checking if ether_aton(), ether_ntoa(), ether_ntohost(), and ether_hostton() are declared, also check sys/ethernet.h, as that's where they are in Solaris 10. * configure.ac: When checking if ether_aton(), ether_ntoa(), ether_ntohost(), and ether_hostton() are declared, switch from using AC_CHECK_FUNC_PROTO to using AC_CHECK_DECLS so we may specify multiple include files. * src/defs.h: Update the prototypes we provide for ether_aton(), ether_ntoa(), ether_ntohost(), and ether_hostton() when we don't find system-provided prototypes for them. * lib/inet_aton.c: replace version from glibc 2.1.2 with version from glibc 2.7. * configure.ac: add calls to AC_TYPE_INT8_T, AC_TYPE_INT16_T, AC_TYPE_INT32_T, AC_TYPE_INT64_T, AC_TYPE_UINT8_T, AC_TYPE_UINT16_T, AC_TYPE_UINT32_T, AC_TYPE_UINT64_T so we may move to the integer types as per C99. (libnet-specific code will still use the types defined by libnet.) * configure.ac: remove call to AC_UNP_CHECK_TYPE(u_int32_t, unsigned int). On systems where it didn't find a u_int32_t type, it #defined one. On newer platforms, that macro definition could interfere with libnet's typedef of u_int32_t in libnet/libnet-types.h. In newer gcc, this would trigger "error: two or more data types in declaration specifiers". * INSTALL.dhcp_probe: update to reflect that we are known to work with libpcap 0.9.8. Tue Jun 19 15:32:30 EDT 2007 Irwin Tillman (irwin at princeton dot edu) * m4/ac_unp_check_type.m4, configure: upgrade AC_UNP_CHECK_TYPE to 1.6. That fixes its test program to work in gcc 4.1.2. Wed Mar 14 10:06:15 EDT 2007 Irwin Tillman (irwin at princeton dot edu) * Version 1.2.0 released. Thu Dec 28 14:28:54 EST 2006 Irwin Tillman (irwin at princeton dot edu) * Upgraded autoconf 2.59 to 2.61. Upgraded automake 1.9.5 to 1.10. * config/config.guess: replace version 2005-07-08 with version 2006-07-02 from automake 1.10. * config/config.sub: replace version 2005-07-08 with version 2006-09-20 from automake 1.10. * config/depcomp: replace version 2005-07-09.11 with version 2006-10-15.18 from automake 1.10. * config/install-sh: replace version 2005-05-14.22 with version 2006-10-14.15 from automake 1.10. * config/missing: replace version 2005-06-08.21 with version 2006-05-10.23 from automake 1.10. * config/mkinstalldirs: replace version 2005-06-29.22 with version 2006-05-11.19 from automake 1.10. Wed Nov 22 15:50:47 EST 2006 Irwin Tillman (irwin at princeton dot edu) * configure.ac, configure: correct checks that prevented us from locating , * src/defs.h: for some (more) system header files, only try to include them if configure found them. Fri Nov 4 18:18:44 EST 2005 Irwin Tillman (irwin at princeton dot edu) * Upgraded from automake 1.9.5 to 1.9.6. * config/config.guess: replaced version 2005-02-10 with version 2005-07-08 from automake 1.9.6. * config/config.sub: replaced version 2005-02-10 with version 2005-07-08 from automake 1.9.6. * config/depcomp: replaced version 2005-02-09.22 with version 2005-07-09.11 from automake 1.9.6. * config/install-sh: replaced version 2005-02-02.21 with version 2005-05-14.22 from automake 1.9.6. * config/missing: replaced version 2005-02-08.22 with version 2005-06-08.21 from automake 1.9.6. * config/mkinstalldirs: replaced version 2005-02-02.21 with version 2005-06-29.22 from automake 1.9.6. Mon Oct 10 10:36:57 EDT 2005 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c: When logging certain errors (malformed packets) in received responses, add the ether_src of the malformed packet. Wed Sep 21 16:25:31 EDT 2005 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c, src/bootp.c, src/dhcp_probe.h, doc/dhcp_probe.8: add -Q option to specify an 802.1Q VLAN ID for outgoing frames. Thu Apr 7 14:10:37 EDT 2005 Irwin Tillman (irwin at princeton dot edu) * To prevent specific installation instructions from being overwritten by automake, moved specific installation instructions from INSTALL to INSTALL.dhcp_probe, moved generic installation instructions from INSTALL.generic to INSTALL. * Upgraded automake from 1.8.3 to 1.9.5. Sat Dec 25 21:02:19 EST 2004 Irwin Tillman (irwin at princeton dot edu) * INSTALL: remove reference to libnet-config, a utility no longer installed by libnet. Fri Nov 5 10:54:05 EST 2004 Irwin Tillman (irwin at princeton dot edu) * INSTALL: describe change needed to libnet 1.1.2.1 to add libnet_cq_end_loop(). * src/dhcp_probe.c: call libnet_cq_end_loop() after iterating through the libnet context queue, to allow us to iterate through it again on next cycle. Lacking this fix, the program only performs probing once at startup, then all following probe cycles execute without doing any probing. * src/dhcp_probe.c: correct 'writing packet' message to display the libnet context label associated with the probe packet. * Version 1.1.0 released. Thu Nov 4 16:02:38 EST 2004 Irwin Tillman (irwin at princeton dot edu) * m4/ist_require_pcap.m4, m4/ist_require_libnet.m4: When setting LDFLAGS, omit space after -L. Wed Nov 3 17:01:48 EST 2004 Irwin Tillman (irwin at princeton dot edu) * Upgraded from the libnet 1.0.2a API to the libet 1.1.2.1 API. We no longer support the old libnet API. Tue Nov 2 13:08:27 EST 2004 Irwin Tillman (irwin at princeton dot edu) * src/get_myeaddr.c: clear arpreq before using. * Version 1.0.7 released. Thu Oct 28 13:46:55 EDT 2004 Irwin Tillman (irwin at princeton dot edu) * src/get_myeaddr.c, src/get_myeaddr.h, src/dhcp_probe.c, configure.ac: If struct arpreq has an arp_dev member, fill it in with the interface name before trying to perform a SIOCGARP ioctl. Wed Oct 27 10:50:57 EDT 2004 Irwin Tillman (irwin at princeton dot edu) * src/defs.h, configure.ac, configure, config.h.in: Only declare ether_ntoa(), ether_addr(), ether_ntohost(), ether_hostton() if they are missing from . * src/dhcp_probe.h: remove duplicate decl of ether_ntoa(), ether_addr(). Tue Sep 7 13:33:53 EDT 2004 Irwin Tillman (irwin at princeton dot edu) * INSTALL: add step to verify 'bootpc' and 'bootps' are in /etc/services or NIS services map. Tue Aug 24 11:17:43 EDT 2004 Irwin Tillman (irwin at princeton dot edu) * Upgraded from autoconf 2.13 to 2.59. Upgraded from automake 1.4 to 1.8.3. * Version 1.0.6 released. Tue Aug 24 10:52:22 EDT 2004 Irwin Tillman (irwin at princeton dot edu) * README, COPYING, Changelog: replace email addresses with human-parseable versions, to reduce spam from simple Web-based address harvesters. * extras/dhcp_probe_notify: add missing my_message() routine, add frequency throttling. * extras/mail-throttled: new. * Version number now 1.0.5. Sun Nov 17 20:55:55 EST 2002 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c doc/dhcp_probe.8: ignore responses where bootp_chaddr != my chaddr, or bootp_htype != HTYPE_ETHER, or bootp_hlen != HLEN_ETHER. * src/dhcp_probe.c: ignore responses where the frame length is not long enough to contain the IP header with the claimed ip_hlen value, a UDP header, and a minimum length BootP/DHCP payload. Mon May 6 14:07:11 EDT 2002 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c: avoid incorrect use of cpp '##' to allow compilation in gcc 3.x. * config/config.guess: replace with latest version (2002-03-20) from GNU. * config/config.sub: replace with latest version (2002-04-26) from GNU. * INSTALL: add note about dependancy on libnet 1.0.x API. Add note about working around a problem in libnet.h when building with recent compilers (e.g. gcc 3.x). * configure.in: version number now 1.0.4. * Version 1.0.4 released. Fri Feb 15 13:43:19 EST 2002 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c: if pcap_open_live() returns a warning message upon success, display the warning. Wed Aug 1 14:17:59 EDT 2001 Irwin Tillman (irwin at princeton dot edu) * README doc/dhcp_probe.8: software home has moved from wwwnet.princeton.edu to www.net.princeton.edu. Tue May 1 14:06:00 EDT 2001 Irwin Tillman (irwin at princeton dot edu) * INSTALL: added a PLATFORMS section listing platforms on which the program has been successfully built and used. * doc/dhcp_probe.8: remove specifics about platform versions. Wed Apr 18 18:51:23 EDT 2001 Irwin Tillman (irwin at princeton dot edu) * src/dhcp_probe.c: save and restore errno. * src/dhcp_probe.c: quit_requested, reread_config_file, reopen_log_file, and reopen_capture_file should be volatile sig_atomic_t. Mon Apr 16 11:03:29 EDT 2001 Irwin Tillman (irwin at princeton dot edu) * doc/dhcp_probe.8: BUGS: On platforms where pcap(3) is unable to support the timeout argument to pcap_open_live() the program may not reliably detect responses from DHCP and BootP servers, or may not function at all. Thu Feb 15 11:10:26 EST 2001 Irwin Tillman (irwin at princeton dot edu) * README COPYING doc/dhcp_probe.8 doc/dhcp_probe.cf.5: product is now generally available, also update legal notices. * src/get_myeaddr.c src/get_myipaddr.c COPYING: better identify that these came from "Unix Network Programming", Volume 1, Second Edition. * configure.in: version number now 1.0.3. * Version 1.0.3 released. Sat Jan 27 17:35:10 EST 2001 Irwin Tillman (irwin at princeton dot edu) * convert to automake, reorganize from flat package into shallow package * configure.in: replace AC_CANONICAL_SYSTEM with AC_CANONICAL_HOST * m4/ist_sys_socket_ioctls_use_streams.m4: replace $target with $host, add AC_REQUIRE([AC_CANONICAL_HOST]) * acconfig.h m4/ist_sys_socket_ioctls_use_streams.m4 m4/sys_errlist.m4: move descriptions of macros for config.h.in into macro definitions * config/config.guess config/config.sub: sync to current GNU versions. Sat Jan 20 16:06:39 EST 2001 Irwin Tillman (irwin at princeton dot edu) * inet_aton.c (inet_aton): replaced version from "UNIX Network Programming: Volume 1", Second Edition, by W. Richard Stevens with version from glibc 2.1.2 * COPYING.LIB: added, since inet_aton() is covered by it. * aclocal.m4: AC_UNP_CHECK_TYPE.m4 added (from "UNIX Network Programming: Volume 1", Second Edition, by W. Richard Stevens) * configure.in accongif.h: check for u_int32_t typedef, ctype.h * Makefile.in: remove -Wall from CFLAGS * COPYING.GPL: moved GPL out of COPYING file into its own file * dhcp_probe.cf.5 extras/dhcp_probe.cf.sample: legal_server keyword updated to reflect some BootP Relay Agents overwrite IP source address * defaults.h: increase MAX_LEGAL_SERVERS from 16 to 64 Thu Aug 17 11:12:12 EDT 2000 Irwin Tillman (irwin at princeton dot edu) * Version 1.0.1 released. Thu Aug 17 11:00:17 EDT 2000 Irwin Tillman (irwin at princeton dot edu) * configfile.c (read_configfile): Add alert_program_name keyword. (GetAlert_program_name): New function. * configfile.h (GetAlert_program_name): New function. * dhcp_probe.c (process_response): Execute alert_program_name when we receive an unexpected response packet. (main): Add signal handler for SIGCHLD. * defs.h: Include and . * extras/dhcp_probe.cf.sample: add sample of alert_program_name. * extras/dhcp_probe_notify: New file, a sample alert program. * dhcp_probe.c (main): sleep() a second time at end of cycle if first sleep() returns immediately as workaround. Tue Jun 27 13:58:48 EDT 2000 Irwin Tillman (irwin at princeton dot edu) * Initial version. dhcp-probe-1.3.0/COPYING.LIB0000644000175100017510000006130311164405072015233 0ustar metro-gimetro-gi GNU LIBRARY GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1991 Free Software Foundation, Inc. 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the library GPL. It is numbered 2 because it goes with version 2 of the ordinary GPL.] Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. 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You can do so by permitting redistribution under these terms (or, alternatively, under the terms of the ordinary General Public License). To apply these terms, attach the following notices to the library. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA Also add information on how to contact you by electronic and paper mail. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the library, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! dhcp-probe-1.3.0/COPYING0000644000175100017510000002552011164405072014627 0ustar metro-gimetro-giCOPYING dhcp_probe This software was created by the Network Systems Group at Princeton University's Office of Information Technology, networking at princeton dot edu. It was written by Irwin Tillman. Portions of this software are copyrighted by other organizations or individuals; see below for details one which portions, and what legal notices apply to each of those portions. Those portions of the software which have not identified below as copyrighted by other organizations or individuals are themselves Copyright (c) 2000-2008, The Trustees of Princeton University, All Rights Reserved. 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This software is provided "as is" and any express or implied warranties, including, but not limited to, the implied warranties of mechantability and fitness for a particular purpose are disclaimed. In no event shall the authors or Princeton University be liable for any direct, indirect, incidental, special exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. ========================================================================= The inet_aton() function in lib/inet_aton.c came from glibc 2.1.2 (the GNU C Library), which is covered by the GNU Library General Public License, Version 2. See COPYING.LIB for details. The file also contains several copyright statements, which are reproduced below. /* * ++Copyright++ 1983, 1990, 1993 * - * Copyright (c) 1983, 1990, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. * - * --Copyright-- */ ========================================================================= Parts of src/report.c and lib/strerror.c came from CMU dhcpd version 3.3.7. The following notice applies to them: Copyright 1996 by Carnegie Mellon University All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of CMU not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ========================================================================= A number of items came from the sample code associated with "UNIX Network Programming: Volume 1", Second Edition, by W. Richard Stevens, published by Prentice Hall PTR. That publication is Copyright (c) 1998 Prentice Hall PTR. These items are: src/daemonize.c src/get_myeaddr.c src/get_myipaddr.c AC_CHECK_FUNC_PROTO in aclocal.m4 and m4/ac_check_func_proto.m4 AC_UNP_CHECK_TYPE in aclocal.m4 and m4/ac_unp_check_type.m4 The sample code associated with that book is available from: ftp://ftp.kohala.com/pub/rstevens/unpv12e.tar.gz ========================================================================= The macro AC_CHECK_STRUCT_FOR in aclocal.4 is copyrighted by Wes Hardaker , and was obtained from the GNU autoconf macro archive at http://research.cys.de/autoconf-archive/ Permission has been granted to use and distribute it under the following license, which is a modified version of the GNU General Public License version 2: Every Autoconf macro presented on this web site is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. 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If your modification has such potential, you must delete any notice of this special exception to the GPL from your modified version. ========================================================================= A number of items are based on code from LPRng-2.0.8: * the macros AC_SYS_NERR, AC_SYS_ERRLIST, AC_DECL_SYS_ERRLIST, AC_DECL_SYS_ERR_DECL. These are in aclocal.m4 and also in m4/sys_errlist.m4. The macros are based very closely on code from LPRng's configure.in file. * much of lib/strerror.c The macros are based very closely on code from LPRng's configure.in file. LPRng-2.0.8 is distributed under the GNU General Public License (see the COPYING.GPL file). ========================================================================= The file INSTALL is the generic installation INSTALL document provided with many GNU products. This document is subject to the GNU General Public License (see the COPYING.GPL file). ========================================================================= dhcp-probe-1.3.0/INSTALL0000644000175100017510000002245011164405072014624 0ustar metro-gimetro-giInstallation Instructions ************************* Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. This file is free documentation; the Free Software Foundation gives unlimited permission to copy, distribute and modify it. Basic Installation ================== Briefly, the shell commands `./configure; make; make install' should configure, build, and install this package. The following more-detailed instructions are generic; see the `README' file for instructions specific to this package. The `configure' shell script attempts to guess correct values for various system-dependent variables used during compilation. 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Specifying the System Type ========================== There may be some features `configure' cannot figure out automatically, but needs to determine by the type of machine the package will run on. Usually, assuming the package is built to be run on the _same_ architectures, `configure' can figure that out, but if it prints a message saying it cannot guess the machine type, give it the `--build=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name which has the form: CPU-COMPANY-SYSTEM where SYSTEM can have one of these forms: OS KERNEL-OS See the file `config.sub' for the possible values of each field. If `config.sub' isn't included in this package, then this package doesn't need to know the machine type. If you are _building_ compiler tools for cross-compiling, you should use the option `--target=TYPE' to select the type of system they will produce code for. 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In order to avoid this problem, you should set them in the `configure' command line, using `VAR=value'. For example: ./configure CC=/usr/local2/bin/gcc causes the specified `gcc' to be used as the C compiler (unless it is overridden in the site shell script). Unfortunately, this technique does not work for `CONFIG_SHELL' due to an Autoconf bug. Until the bug is fixed you can use this workaround: CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash `configure' Invocation ====================== `configure' recognizes the following options to control how it operates. `--help' `-h' Print a summary of the options to `configure', and exit. `--version' `-V' Print the version of Autoconf used to generate the `configure' script, and exit. `--cache-file=FILE' Enable the cache: use and save the results of the tests in FILE, traditionally `config.cache'. FILE defaults to `/dev/null' to disable caching. `--config-cache' `-C' Alias for `--cache-file=config.cache'. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. To suppress all normal output, redirect it to `/dev/null' (any error messages will still be shown). `--srcdir=DIR' Look for the package's source code in directory DIR. Usually `configure' can determine that directory automatically. `configure' also accepts some other, not widely useful, options. Run `configure --help' for more details. dhcp-probe-1.3.0/AUTHORS0000644000175100017510000000030011164405072014631 0ustar metro-gimetro-giAuthors of dhcp_probe See also ChangeLog Irwin Tillman wrote the original version for Solaris 7. Patches have been contributed by: Laurent Guignard Cristian Klein Andru Luvisi Leo Weppelman dhcp-probe-1.3.0/TODO0000644000175100017510000000312011164405072014254 0ustar metro-gimetro-giTODO for dhcp_probe If the legal_server_ethersrc feature passes additional testing, update the documentation to stop referring to it as "experimental." Fix whatever bug is causing the capture file to be unparseable after the first packet. (After one packet, tcpdump reports: "tcpdump: pcap_loop: truncated dump file". Port to other platforms; stop ignoring most of what autoconf learns. (Although the build process is autoconf-based, at this time the program ignores almost everything autoconf discovers about your system. The product was developed on Solaris 7 with gcc 2.95.2, and while it has since moved forward to more recent versions of Solaris and gcc, it has not been ported to other platforms. Despite the use of autoconf, the code merrily makes assumptions that are only valid on Solaris with gcc, or similar variations. The use of autoconf here is mostly to provide a framework in case the product is ported to other platforms in the future. Allow specification of the syslog facility name on the commandline? The legal_servers array initialized by read_configfile() should be created dynamically, rather than sized via compile-time definitions. The legal_servers_ethersrc array initialized by read_configfile() should be created dynamically, rather than sized via compile-time definitions. The lease_networks_of_concern_addr, lease_networks_of_concern_netmask, and lease_networks_of_concern_addr_and_netmask arrays initialized by read_configfile() should be created dynamically, rather than sized via compile-time definitions. Figure out how to eliminate the compiler warning in bootp.c dhcp-probe-1.3.0/lib/0000755000175100017510000000000011164405072014336 5ustar metro-gimetro-gidhcp-probe-1.3.0/lib/strerror.c0000644000175100017510000000272111164405072016366 0ustar metro-gimetro-gi/* Provide a strerror() routine for those systems that don't already have one. A portion of this code is subject to the GNU General Public License; see the comments below. */ /* * strerror() - for those systems that don't have it yet. * We'll return a string from sys_errlist[] if your system has it. * Else we'll just return "Error %d", filling in the errno. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "strerror.h" /* * Check for if sys_errlist[] and sys_nerr exist and are defined. * This section of the code came from configure.in distributed with LPRng-2.0.8. * It is subject to the GNU General Public License, see the COPYING for * the GNU General Public License. */ #if defined(HAVE_SYS_NERR) # if !defined(HAVE_SYS_NERR_DECL) extern int sys_nerr; # endif # define num_errors (sys_nerr) # else # define num_errors (-1) /* always use "Error %d" */ #endif #if defined(HAVE_SYS_ERRLIST) # if !defined(HAVE_SYS_ERRLIST_DECL) extern const char *const sys_errlist[]; # endif # else # undef num_errors # define num_errors (-1) /* always use "Error %d" */ #endif static char errmsg[80]; /* holds "Error %d" */ char * strerror(en) int en; { #ifdef HAVE_SYS_ERRLIST if ((0 <= en) && (en < num_errors)) return (char *) sys_errlist[en]; /* cast away const since strerror(3) isn't declared that way */ #endif /* SAFE use of sprintf */ sprintf(errmsg, "Error %d", en); return errmsg; } dhcp-probe-1.3.0/lib/inet_aton.h0000644000175100017510000000036111164405072016467 0ustar metro-gimetro-gi#ifndef INET_ATON_H #define INET_ATON_H #ifndef HAVE_INET_ATON_PROTO # include # include extern int inet_aton(const char *, struct in_addr *); #endif /* not HAVE_INET_ATON_PROTO */ #endif /* not INET_ATON_H */ dhcp-probe-1.3.0/lib/Makefile.in0000644000175100017510000003025511164405072016410 0ustar metro-gimetro-gi# Makefile.in generated by automake 1.10.1 from Makefile.am. # @configure_input@ # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; 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It converts an IPv4 address in dot-quad ASCII format to struct in_addr format. User passes us a char * to the string in arg 1; and a struct in_addr * in arg 2 for us to use to return the address. Return 1 on success, 0 on failure. This routine came from resolv/inet_addr.c in glibc 2.7 (the GNU C Library), which is covered by the GNU Library General Public License, Version 2. See COPYING.LIB for details. The routine as distributed with that library includes several copyright statements, which are reproduced below. */ /* * Copyright (c) 1983, 1990, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Portions Copyright (c) 1993 by Digital Equipment Corporation. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies, and that * the name of Digital Equipment Corporation not be used in advertising or * publicity pertaining to distribution of the document or software without * specific, written prior permission. * * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ /* * Portions Copyright (c) 1996-1999 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #if defined(LIBC_SCCS) && !defined(lint) static const char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93"; static const char rcsid[] = "$BINDId: inet_addr.c,v 8.11 1999/10/13 16:39:25 vixie Exp $"; #endif /* LIBC_SCCS and not lint */ #include #include #include #include #include #ifdef _LIBC # include # include # include # include # include #endif #include "inet_aton.h" #if 0 /* * Ascii internet address interpretation routine. * The value returned is in network order. */ in_addr_t inet_addr(const char *cp) { struct in_addr val; if (__inet_aton(cp, &val)) return (val.s_addr); return (INADDR_NONE); } #endif /* * Check whether "cp" is a valid ascii representation * of an Internet address and convert to a binary address. * Returns 1 if the address is valid, 0 if not. * This replaces inet_addr, the return value from which * cannot distinguish between failure and a local broadcast address. */ int inet_aton(const char *cp, struct in_addr *addr) { static const in_addr_t max[4] = { 0xffffffff, 0xffffff, 0xffff, 0xff }; in_addr_t val; #ifndef _LIBC int base; #endif char c; union iaddr { uint8_t bytes[4]; uint32_t word; } res; uint8_t *pp = res.bytes; int digit; #ifdef _LIBC int saved_errno = errno; __set_errno (0); #endif res.word = 0; c = *cp; for (;;) { /* * Collect number up to ``.''. * Values are specified as for C: * 0x=hex, 0=octal, isdigit=decimal. */ if (!isdigit(c)) goto ret_0; #ifdef _LIBC { char *endp; unsigned long ul = strtoul (cp, (char **) &endp, 0); if (ul == ULONG_MAX && errno == ERANGE) goto ret_0; if (ul > 0xfffffffful) goto ret_0; val = ul; digit = cp != endp; cp = endp; } c = *cp; #else val = 0; base = 10; digit = 0; if (c == '0') { c = *++cp; if (c == 'x' || c == 'X') base = 16, c = *++cp; else { base = 8; digit = 1 ; } } for (;;) { if (isascii(c) && isdigit(c)) { if (base == 8 && (c == '8' || c == '9')) return (0); val = (val * base) + (c - '0'); c = *++cp; digit = 1; } else if (base == 16 && isascii(c) && isxdigit(c)) { val = (val << 4) | (c + 10 - (islower(c) ? 'a' : 'A')); c = *++cp; digit = 1; } else break; } #endif if (c == '.') { /* * Internet format: * a.b.c.d * a.b.c (with c treated as 16 bits) * a.b (with b treated as 24 bits) */ if (pp > res.bytes + 2 || val > 0xff) goto ret_0; *pp++ = val; c = *++cp; } else break; } /* * Check for trailing characters. */ if (c != '\0' && (!isascii(c) || !isspace(c))) goto ret_0; /* * Did we get a valid digit? */ if (!digit) goto ret_0; /* Check whether the last part is in its limits depending on the number of parts in total. */ if (val > max[pp - res.bytes]) goto ret_0; if (addr != NULL) addr->s_addr = res.word | htonl (val); #ifdef _LIBC __set_errno (saved_errno); #endif return (1); ret_0: #ifdef _LIBC __set_errno (saved_errno); #endif return (0); } dhcp-probe-1.3.0/lib/my_null_proc.c0000644000175100017510000000022111164405072017177 0ustar metro-gimetro-gi/* Because an empty library is not portable, our library will always contains at least this member. */ void my_null_proc(void) { return; } dhcp-probe-1.3.0/lib/strerror.h0000644000175100017510000000017611164405072016375 0ustar metro-gimetro-gi#ifndef STRERROR_H #define STRERROR_H #ifndef HAVE_STRERROR extern char * strerror(int); #endif #endif /* not STRERROR_H */ dhcp-probe-1.3.0/NEWS0000644000175100017510000001556611164405072014304 0ustar metro-gimetro-gidhcp_probe NEWS - history of user-visible changes. See the file ChangeLog for the details of all changes. Version 1.3.0 - March 9 2009, by Irwin Tillman * The "received unexpected response ..." message passed to syslog() now always ends with a period. If you parse this message, you may need to update your code. * New optional 'alert_program_name2' configuration file statement. This works like the older 'alert_program_name', but calls an alert program using a different syntax, intended to be extensible. (The existing 'alert_program_name' called an alert program using positional arguments, so was not extensible without breaking existing alert programs. That limited our ability to enhance dhcp_probe to pass additional information to the alert program. The new 'alert_program_name2' calls an alert program using options.) The older optional 'alert_program_name' statement continues to be supported and unchanged. If you are using that, you need not change. However, you may wish to upgrade to the new alert_program_name2; if you do so, you will need to replace or revise the alert program so it supports the new call syntax. See "New dhcp_probe_notify2 program" item below. You may not specify both an alert_program_name and an alert_program_name2 in the same configuration file. * New dhcp_probe_notify2 program. This program is like the older dhcp_probe_notify program (which continues to be supported), but supports the new syntax expected by the new 'alert_program_name2' configuration file statement. If you are currently using the supplied dhcp_probe_notify alert program, and you have not modified it (other than to update the definitions at the top), you should be able to switch to the new dhcp_probe_notify2 easily; you will need to replace the alert_program_name statement in your configuration file with the alert_program_name2 statement, specify alert program dhcp_probe_notify2 instead of dhcp_probe_notify2, and customized the definitions at the top of dhcp_probe_notify2 to match the definitions you customized in dhcp_probe_notify. dhcp_probe_notify2 also accepts a new option so it can report a 'yiaddr' value when the new "Lease Networks of Concern" feature is triggered. * New "Lease Networks of Concern" feature. This is intended to add more text to the messages logged (and via alerts) when a rogue DHCP server is distributing IP addresses that fall into network ranges of special concern -- for example, *your* networks' IP ranges. Most rogue DHCP servers distribute IP addresses associated with a private network, or NAK legitimate clients. Rogue DHCP servers that distribute your own network's addresses may be of special concern. To activate this new feature, add 'lease_network_of_concern' statements to the configuration file to specify network ranges. When dhcp_probe detects a response from a rogue DHCP server, if the response's yiaddr field is non-zero and falls within any of the "Lease Networks of Concern", that fact will be reported. Specifically, the "received unexpected response ..." message sent to syslog() will be extended to add additional text reporting the value of the yiaddr field. And if you have specified an 'alert_program_name2' in the configuration file, that alert program will be called with the new '-y yiaddr' option. (If you are still using the older 'alert_program_name', the alerts will not contain this additional information, as the old alert_program_name doesn't support this change.) * New "legal_server_ethersrc" test. The program traditionally compares the IP source address of response packets to the values specified by "legal_server" statements in the configuration file. Any response with an IP source address that doesn't appear as a legal_server is treated as a rogue server. The new legal_server_ethersrc configuration statement allows you to also check the Ethernet source address of response packets. If you do not specify any legal_server_ethersrc statements, the program continues to behave as it has in the past. If you specify one or more legal_server_ethersrc statements, the program will check the Ethernet source address of response packets to verify they appear among those listed. Any response from an unlisted Ethernet source address is treated as a rogue server. This test is done in addition to the legal_server test. So if you specify by legal_server and legal_server_ethersrc statements, a response's IP source and Ethernet source addresses are both checked; if either is missing from those you specified, the response is treated as a rogue. This new test is considered experimental in version 1.3.0, as it has received only limited testing. Version 1.2.2 - October 15 2008, by Irwin Tillman * The default name of the pid file has changed from /etc/dhcp_probe.pid to /var/run/dhcp_probe.pid. You can still override the default by specifying the '-p pidfile' command line option. * New -T option to enable the 'socket receive timeout' feature. This may work around a problem on some platforms where the program waits forever for responses after sending a probe packet. This new feature does not work on all platforms. * When exiting, the program will more consistently log an "exiting" message. Version 1.2.1 - February 28 2008, by Irwin Tillman * No user-visible changes. Version 1.2.0 - March 14 2007, by Irwin Tillman * Upgraded autoconf and automake, may build on newer systems. * Allow you to add 802.1Q VLAN ID to outgoing frames. Version 1.1.0 - November 10 2004, by Irwin Tillman * Upgraded from the libnet 1.0.x API to the libnet 1.1.x API. We no longer support the libnet 1.0.x API. To compile this version, you must first upgrade libnet to 1.1.2.1. Additionally, you must modify libnet to add a libnet_cq_end_loop() function, as described in our INSTALL document. Version 1.0.7 - November 2 2004, by Irwin Tillman * No user-visible changes. Version 1.0.6 - August 24 2004, by Irwin Tillman * Upgraded autoconf and automake, may build on newer systems. Version 1.0.5 - August 24 2004, by Irwin Tillman * We make some effort to ignore BootP/DHCP responses we happen to capture that aren't actually in response to our probe (we check htype, hlen, and chaddr fields). Version 1.0.4 - May 2002, by Irwin Tillman * We should be able to compile under gcc 3.0.x now. Version 1.0.3 - February 2001, by Irwin Tillman * No user-visible changes. Version 1.0.2 - January 2001, by Irwin Tillman * Cleanup of some of the configuration code. You may now specify where libnet and libpcap libraries and includes are located. Version 1.0.1 - August 2000, by Irwin Tillman * Added alert_program_name feature, so you may specify an external program to run each time a response is received from an unexpected server. Version 1.0.0 - June 2000, by Irwin Tillman * first version dhcp-probe-1.3.0/Makefile.in0000644000175100017510000004723711164405072015652 0ustar metro-gimetro-gi# Makefile.in generated by automake 1.10.1 from Makefile.am. # @configure_input@ # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ VPATH = @srcdir@ pkgdatadir = $(datadir)/@PACKAGE@ pkglibdir = $(libdir)/@PACKAGE@ pkgincludedir = $(includedir)/@PACKAGE@ am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd install_sh_DATA = $(install_sh) -c -m 644 install_sh_PROGRAM = $(install_sh) -c install_sh_SCRIPT = $(install_sh) -c INSTALL_HEADER = $(INSTALL_DATA) transform = $(program_transform_name) NORMAL_INSTALL = : PRE_INSTALL = : POST_INSTALL = : NORMAL_UNINSTALL = : PRE_UNINSTALL = : POST_UNINSTALL = : build_triplet = @build@ host_triplet = @host@ subdir = . 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All rights reserved. .\" .TH DHCP_PROBE 8 "Mar 9 2009" "Princeton Univ." .SH NAME dhcp_probe \- locate DCHP and BootP servers on a directly-attached network .SH SYNOPSIS dhcp_probe [ .B \-c .I config_file ] [ .B \-d .I debuglevel ] [ .B \-f ] [ .B \-h ] [ .B \-l .I log_file ] [ .B \-o .I capture_file ] [ .B \-p .I pid_file ] [ .B \-Q .I vlan_id ] [ .B \-s .I capture_bufsize ] [ .B \-T ] [ .B \-v ] [ .B \-w .I cwd ] .I interface_name .br .SH DESCRIPTION dhcp_probe attempts to discover DHCP and BootP servers on a directly-attached Ethernet network. A network administrator can use this tool to locate unauthorized DHCP and BootP servers. .PP The program must be run with root privilege. .PP The program periodically broadcasts a number of DHCP and BootP request packets out a single physical interface. Several different kinds of request packets are sent, as a DHCP or BootP server may only respond to certain requests, depending on the server's configuration. Essentially, dhcp_probe mimics a BootP or DHCP client in a variety of possible states, attempting to provoke responses from servers. .PP After sending each request packet, dhcp_probe listens for responses. After filtering out responses that do not appear to be in response to the probe, and responses from known DHCP and BootP servers (identified by their IP source addresses and optionally by their Ethernet source addresses), it logs any responses from unknown servers. .PP Optionally, responses from unknown servers may also be written to a packet capture file. .PP Optionally, an external program may be called each time a response from an unknown server is received. .PP dhcp_probe may not be able to locate all DHCP and BootP servers; see LIMITATIONS below. .PP As DHCP broadcasts do not ordinarily cross IP routers, dhcp_probe will locate only servers that are attached to the same physical network as the interface specified on the command line. Although BootP Relay Agents running on this network may help the broadcasts cross IP routers, these agents typically are configured to convert the broadcasts to unicasts directed to only the well-known DHCP or BootP servers located on other physical networks. As a result, BootP Relay Agents will allow your the servers to receive the requests issued by dhcp_probe, but will not cause remote unknown servers to hear these requests. Therefore, if you have multiple physical networks, you may wish to run dhcp_probe on each of these networks to discover unknown DHCP and BootP servers on each of them. .PP dhcp_probe functions on a single Ethernet interface specified on the command line; it does not listen on multiple interfaces. However, if the host has multiple physical interfaces, you may run an instance of dhcp_probe on each interface. If your physical interface supports 802.1Q, you can use that to create a logical interface on each VLAN, then run an instance of dhcp_probe on each logical interface. .PP dhcp_probe is intended for use by a network administrator. Before running dhcp_probe on any network other than one for which you are responsible, contact that network's administrator to learn if it is acceptable for you to run this software on that network. Running this software may violate on a network where you don't have permission to do so may violate that network's acceptable use policy. .SH AVAILABILITY .PP dhcp_probe is a product of the Network Systems Group at Princeton University's Office of Information Technology, and is available from http://www.net.princeton.edu/software/dhcp_probe/ .PP Presently the product builds and runs on Solaris 9 on SPARC with gcc. The program relies on the .BR pcap (3) and .BR libnet (3) libraries. .SH OPTIONS .TP .IB \-c \ config_file Specifies the configuration file. If not specified, this defaults to .BR /etc/dhcp_probe.cf . The configuration file is read at startup, and is re-read whenever a SIGHUP is received. See .BR dhcp_probe.cf (5). .TP .BI \-d \ debuglevel Sets the .I debuglevel variable that controls the amount of debugging messages generated. If not specified, this defaults to 0 (no debugging). For a summary of the types of messages produced at each debug level, see DEBUG LEVELS below. .TP .B \-f Specifies that the program should not fork, but instead remain in the foreground. Only use this when you are starting the program manually for testing purposes. When in the foreground, any messages produced by the program are written to .IR stderr instead of to .BR syslog (3) or any .I log_file you might specify with the .B \-l option. .TP .B \-h Display a brief usage summary, then exit. .TP .BI \-l \ log_file Log messages to the specified file instead of to .BR syslog (3). (This option is ignored if you also specify the .B \-f option, as that directs messages to .IR stderr .) The log file is opened shortly after the program starts. It is closed and re-opened when the program receives a SIGUSR1 signal. .TP .BI \-o \ capture_file When a response packet is received from an unexpected server, write the packet to the specified file. The file is opened and truncated shortly after the program starts. It is closed and re-opened (and truncated) when the program receives a SIGUSR2 signal. The file is a .BR pcap (3) savefile, and may be read with any program that understands the pcap savefile format; e.g. .BR tcpdump (1). .TP .BI \-p \ pid_file Specifies the file that will contain the program's processid. If not specified, this defaults to .BR /var/run/dhcp_probe.pid . The .I pid_file is written shortly after the program starts, and is removed when the program exits under its own control. .TP .BI \-Q \ vlan_id Specifies that the packets we send should be tagged with an 802.1Q VLAN ID vlan_id. Valid values range from 0 to 4095. If not specified, the packets we send do not contain an 802.1Q header. .TP .BI \-s \ capture_bufsize Specifies the size of the buffer that will be used to capture all the responses (Ethernet frames) to a single request packet; responses which do not fit are silently dropped. The value is specified in bytes, and must fit into your host's range for an .IR int ; values outside that range may result in unpredictable results. If not specified, this defaults to 30280, which is enough for twenty maximum-size Ethernet frames (1514*20). Typical responses are Ethernet frames ranging from 342-590 bytes, so the default capture buffer size should hold over 50 of them. .TP .B \-T Enables the 'socket receive timeout' feature. On some platforms, dhcp_probe may ignore the .I response_wait_time (described in .BR dhcp_probe.cf (5)), instead waiting forever for a response after it sends a probe packet. As per .BR pcap (3), this is because the read timeout we pass to pcap_open_live() is not supported on all platforms. If you encounter this issue, try enabling our 'socket receive timeout' feature; it might help. Enabling this feature causes the program to also set a socket receive timeout on the socket underlying the pcap capture; we set this timeout to the .IR response_wait_time . On some platforms, the program's socket receive timeout feature does not work; instead the program will report that it cannot set the receive timeout, and will exit. .TP .B \-v Display the program's version number, then exit. .TP .IB \-w \ cwd Specifies the working directory; shortly after starting the program changes its current working directory to this. If not specified, this defaults to .IR / . .TP .I interface_name Specifies the name of the interface the program should use; this argument is required. This must be an Ethernet interface which is up and has been assigned an IP address. .SH OPERATION .PP After initialization, the program enters its main event loop, in which it remains until you signal the program to exit with a SIGINT, SIGTERM, or SIGQUIT. .PP The main event loop (a.k.a. the "probe cycle") consists of the following actions, repeated until the program receives a request to quit: .RS 5 .TP 1. Handle any signals that have been received. .TP 2. Install a .BR pcap (3) filter to listen for UDP packets destined to the BootP client port (UDP port 68). .TP 3. Broadcast a DHCP or BootP request packet out the specified interface. .TP 4. Listen for .I response_wait_time milliseconds for any responses received by the .BR pcap (3) filter. (The .I response_wait_time defaults to 5000 milliseconds (5 seconds), and may be changed in the .IR dhcp_probe.cf (5) file.) .sp Any responses that contains a bootp_chaddr field not equal to the chaddr used in the probe is ignored, as are any that have incorrect bootp_htype or bootp_hlen fields. These are not responses to our probe. .sp Any responses from known DHCP and BootP servers are ignored. The IP source address for responses from each known server is declared using a .B legal_server statement in the .IR dhcp_probe.cf (5) file. Any response with an IP source address that does not appear in a .B legal_server statement is treated as an unknown server. .sp The Ethernet source address for responses from each known server is also optionaly declared using a .B legal_server_ethersrc statement in the .IR dhcp_probe.cf (5) file. If at least one .B legal_server_ethersrc is specified, then any response with an Ethernet source address that does not appear in a .B legal_server_ethersrc statement is treated as an unknown server. If no .B legal_server_ethersrc statements appear, then the response's Ethernet source address is not checked. (The .B legal_server_ethersrc statement is considered experimental in version 1.3.0, as it has received only limited testing.) .sp For each response from an unknown server: .TP 10 a) If the reponse packet contains a non-zero .BI yiaddr field, and one or more .B lease_network_of_concern statements were specified, determine if the .B yiaddr value falls within any of the "Lease Networks of Concern". .TP 10 a) Log a message showing the response packet's source IP and Ethernet addresses. If the response packet's yiaddr is non-zero and falls within a "Lease Networks of Concern", the log message also reports that. .TP 10 b) If the .B \-o option was specified, the packet is also written to a packet capture file. .TP 10 c) If an .I alert_program_name was specified in the .IR dhcp_probe.cf (5) file, that program is executed, with the following arguments in order: the name of the calling program (e.g. .BR dhcp_probe ), the name of the interface on which the unexpected response packet was received, the IP source address of the packet, and the Ethernet source address of the packet. (We do not wait for the .I alert_program_name to complete; it runs in a child process.) .TP 10 d) If an .I alert_program_name2 was specified in the .IR dhcp_probe.cf (5) file, that program is executed, with the following required options: .nf -p the name of the calling program (e.g. dhcp_probe) -I the name of the interface on which the unexpected response packet was received -i the IP source address of the packet -m and the Ethernet source address of the packet .fi If the response packet's yiaddr is non-zero and falls within a "Lease Networks of Concern", the following optional options are also passed: .nf -y the non-zero yiaddr value .fi (We do not wait for the .I alert_program_name2 to complete; it runs in a child process.) .TP 5. Remove the .BR pcap(3) filter installed earlier. .TP 6. If any signals have arrived requesting that we quit, exit gracefully. .TP 7. Repeat steps 2-6 for each flavor of DHCP and BootP request packet the program supports (see PACKET FLAVORS below). .TP 8. Handle any signals that have been received. .TP 9. Sleep for .I cycle_time seconds. (The .I cycle_time defaults to 300 seconds, and and may be changed in the .IR dhcp_probe.cf (5) file.) .RE .PP The .BR pcap (3) filter the program installs normally does not specify that the interface should be placed into promiscuous mode (although it is possible the interface is already in promiscuous mode for some other reason). However, if in the .BR dhcp_probe.cf (5) file you specify a .I chaddr or .I ether_src value other than the interface's actual hardware address, then the pcap filter .I will specify that the interface should be placed into promiscuous mode. .PP Although the filter used with .BR pcap (3) specifies only UDP packets destined to port .I bootpc should be collected, on systems where .I bpf isn't part of the kernel, .BR pcap (3) must implement .I bpf as part of the application. This can increase the number of packets that must be passed from the kernel to user space to be filtered. The program attempts to minimize the side-effects of this by removing the .BR pcap (3) filter when it isn't actually listening for responses. In particular, the filter is not installed during the time the program sleeps between each probe cycle (the .IR cycle_time ). .PP If you do specify an .IR alert_program_name , take care that the program you specify is safe for a privileged user to run; it is executed with the same (i.e. root) privileges as the calling program. .SH "PACKET FLAVORS" No single request packet is likely to provoke a response from every possible BootP and DHCP server. Some servers may only response to either BootP, or DHCP, but not both. Some servers may be configured to only respond to a small set of known clients. Some DHCP servers will only provide leases to a small set of known clients, but may be willing to respond (negatively) to unknown clients that request a lease renewal on an inappropriate IP address. Therefore, dhcp_probe actually sends not one, but five different flavor request packets, in the hopes of provoking responses from a wider variety of unknown servers. .PP The packet flavors are: .TP BOOTPREQUEST This packet is typical of a BootP client requesting an IP address. .sp It will typically provoke a BOOTPREPLY from a BootP server willing to respond to any BootP client. (BootP servers configured to only respond to a set of known clients may not respond.) .TP DHCPDISOVER (INIT) This packet is typical of a DHCP client in the INIT state. .sp The options field contains a DHCP Message Type specifying DHCPDISCOVER. .sp The options field contains a DHCP Client Identifier, which is computed by prepending 0x'01' to the value of .IR chaddr . (The value .I chaddr is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to the interface's Ethernet address.) .sp This packet will typically provoke a DHCPOFFER from a DHCP server willing to respond to any DHCP client. (DHCP servers configured to only offer leases to a set of known clients may not respond.) .TP DHCPREQUEST (SELECTING): This packet is typical of a DHCP client in the SELECTING state; i.e. a client which has previously issued a DHCPDISCOVER, then received a DHCPOFFER from some DHCP server. .sp The options field contains a DHCP Message Type specifying DHCPREQUEST. .sp The options field contains a DHCP Client Identifier, which is computed by prepending 0x'01' to the value of .IR chaddr . (The value .I chaddr is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to the interface's Ethernet address.) .sp The options field contains a DHCP Server Identifier specifying .IR server_id , which should be an IP address that does not correspond to any valid DHCP Server Identifier on your network. (The value .I server_id is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to 10.254.254.254.) .sp The options field contains a DHCP Requested IP Address specifying .IR client_ip_address , which should be an IP address that does not correspond to any valid IP address on your network. (The value .I client_ip_address is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to 172.31.254.254.) .sp This packet occassionally provokes a response from a broken DHCP server that fails to respect the DHCP Server Identifier option. .TP DHCPREQUEST (INIT-REBOOT): This packet is typical of a DHCP client in the INIT-REBOOT state; i.e. a client which has obtained a DHCP lease in the past, is bringing up its IP stack, and hopes to obtain (or extend) a DHCP lease on the same IP address as in the past. .sp The options field contains a DHCP Message Type specifying DHCPREQUEST. .sp The options field contains a DHCP Client Identifier, which is computed by prepending 0x'01' to the value of .IR chaddr . (The value .I chaddr is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to the interface's Ethernet address.) .sp The options field contains a DHCP Requested IP Address specifying .IR client_ip_address , which should be an IP address that does not correspond to any valid IP address on your network; ideally it should be one that is topologically inappropriate for your network. (The value .I client_ip_address is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to 172.31.254.254.) .sp If the Requested IP Address option is topologically inappropriate for your network, this packet may provoke a DHCPNAK from any DHCP server that believes it is authoritative for the network's IP topology. .TP DHCPREQUEST (REBINDING) This packet is typical of a DHCP client in the REBINDING state; i.e. a client which has obtained a DHCP lease which is between its DHCP T2 and expiration time. .sp The options field contains a DHCP Message Type specifying DHCPREQUEST. .sp The options field contains a DHCP Client Identifier, which is computed by prepending 0x'01' to the value of .IR chaddr . (The value .I chaddr is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to the interface's Ethernet address.) .sp The ciaddr field contains .IR client_ip_address , which should be an IP address that does not correspond to any valid IP address on your network; ideally it should be one that is topologically inappropriate for your network. (The value .I client_ip_address is specified in the .BR dhcp_probe.cf (5) file, otherwise it defaults to 172.31.254.254.) .sp If the value of ciaddr is topologically inappropriate for your network, this packet will provoke a DHCPNAK from any DHCP server that believes it is authoritative for the network's IP topology. .PP All the request packets sent by the program share the following common characteristics: .RS 5 .sp Ethernet Header .RS 5 destination: ff:ff:ff:ff:ff:ff .br source: .IR ether_src from .IR dhcp_probe.cf (5), else interface hardware address .br type: ETHERTYPE_IP (0x0800) .RE .sp IP Header .RS 5 version: 4 .br header length: 5 .br tos: 0 .br total length: 328 (20-byte IP header + 8-byte UDP header + 300-byte BootP/DHCP payload) .br identifier: 1 .br flags: 0 .br fragment offset: 0 .br ttl: 60 .br protocol: IPPROTO_UDP (17) .br header checksum: (computed) .br source address: 0.0.0.0 .br destination address: 255.255.255.255 .br options: (none) .RE .br .sp UDP Header .RS 5 source port: PORT_BOOTPC (68) .br dest port: PORT_BOOTPS (67) .br checksum: (computed) .RE .sp BootP/DHCP Payload .RS 5 op: BOOTREQUEST (1) .br htype: HTYPE_ETHER (1) .br hlen: HLEN_ETHER (6) .br hops: 0 .br xid: 1 .br secs: 0 .br flags: 0 .br ciaddr: 0.0.0.0 (except for DHCPREQUEST (REBINDING) packets it is .I client_ip_address from .BR dhcp_probe.cf (5), else 172.31.254.254) .br siaddr: 0.0.0.0 .br giaddr: 0.0.0.0 .br chaddr: .I chaddr from .IR dhcp_probe.cf (5), else interface hardware address .br sname: (all 0's) .br file: (all 0's) .br options: RFC1048 cookie (0x63825363), possibly followed by DHCP options, followed by END option (0xFF), followed by PAD options (0x00) to bring the field to 64 bytes .RE .RE .SH "MULTIPLE INTERFACES" Although dhcp_probe only supports monitoring a single physical interface, you may run an instance of the program on each physical interface; each monitors a different physical network. .PP When running multiple copies of dhcp_probe, be sure to specify a different .I pid_file for each instance. .PP If you specify a .I log_file and/or a .IR capture_file , be sure to specify a different one for each instance. .PP You may specify a different .I config_file for each instance. If you don't need to customize the settings in that file for each instance, you may use the same configuration file for all instances. .PP If you have multiple logical interfaces on the same physical interface, or multiple logical IP networks running on a single physical network, there is no need to run multiple instances of dhcp_probe to monitor each logical interfaces or logical network. A single instance of the program running on a physical interface is sufficient to provoke any servers on that physical network that might be willing to respond. .PP If your physical interface supports 802.1Q, you can use a single physical interface to monitor multiple VLANs. Use your operating system to create a logical interface on each VLAN, then run an instance of the program on each logical interface. Since the program is responsible for constructing Ethernet frame headers, you will probably need to specify the \-Q option to instruct it to add to outgoing frames an 802.1Q VLAN header with the appropriate VLAN ID. .SH SIGNALS The program will respond to a number of signals: .TP .B SIGUSR1 If logging to a file, close and re-open it. If the program is in the middle of a probe cycle, handling the signal is deferred until the end of the cycle. (Has no effect if logging to .BR syslog (3) or if the .B \-f option was specified.) .TP .B SIGUSR2 If capturing to a file, close and re-open it. If the program is in the middle of a probe cycle, handling the signal is deferred until the end of the cycle. (Has no effect if the .B \-o option was not specified.) .sp Because re-opening the capture file causes the file to be truncated and a new .BR pcap (3) header to be written to it, if you want to save the prior contents of the capture file, move the existing capture file aside before sending the signal. .TP .B SIGHUP Reread the configuration file. If the program is in the middle of a probe cycle, handling the signal is deferred until the end of the cycle. .TP .B SIGTERM, SIGINT, SIGQUIT Exit gracefully. If the program is in the middle of a probe cycle, handling the signal is deferred until the program finishes sending and receiving responses for the current flavor request packet. .SH "LEASE NETWORKS OF CONCERN" Most rogue BootP/DHCP servers distribute private IP addresses to clients, or send DHCPNAK messages to legitimate clients. Some even more disruptive rogue BootP/DHCP servers may distribute IP addresses that fall within your own networks' IP ranges. The "Lease Networks of Concern" feature is intended to help you identify these particularly disruptive servers. .PP You may activate the feature by specifying the .B lease_network_of_concern statement in your configuration file. Use the statement multiple times to specify all your legitimate network ranges. .PP When a rogue BootP/DHCP server is detected, if the rogue's response packet contains a non-zero .B yiaddr value, the value is compared to the "Lease Networks of Concern" you specified. If the value falls within any of those network ranges, the message logged by .B dhcp_probe is extended to make note of this, and to report the .B yiaddr value. Furthermore, if you are using the .B alert_program_name2 feature, the alert program is called with an extra .B "\-y yiaddr" option so that alert program can take any additional action desired. .PP .SH "DEBUG LEVELS" The program produces increasingly detailed output as the .I debuglevel increases. Under normal circumstances, you can run at .IR debuglevel 0. Here's roughly what messages are added at each .IR debuglevel . .LP .TP 6 0 Display the IP source (and Ethernet source) of each unexpected DHCP or BootP response packet. .sp Startup and shutdown notice. .sp Non-fatal errors in the configuration file. .sp Fatal errors. .TP 6 1 At startup, show some information about the program's configuration. .TP 6 2 Show each time we start and finish (re-)reading the configuration file. .sp Show each time we close and re-open the logfile or capture file. .sp Report on response packets that could not be parsed (e.g. truncated). .TP 6 3 Each time we (re-)read the configuration file, echo the information we obtain from it. .TP 6 7 For each parsable response packet, show the Ethernet source and destination, the IP source and destination, and indicate when the IP source is a legal (known) server. .TP 6 11 For each probe cycle, show when the cycle begins and ends, when we write a packet, and when we begin and end listening for response packets. .SH AUTHOR The program was written by Irwin Tillman of Princeton University's OIT Network Systems Group. It was written to run on Solaris, relying on the generally-available .BR pcap (3) and .BR libnet (3) libraries. .SH FILES .TP .B /etc/dhcp_probe.cf Configuration file read by the program. See .BR dhcp_probe.cf (5). The name of this file can be overriden by a command-line option. .TP .B /etc/dhcp_probe.pid Contains the program's processid. The name of this file can be overriden by a command-line option. .SH LIMITATIONS dhcp_probe is not guaranteed to locate all unknown DHCP and BootP servers attached to a network. If a BootP server is configured so it only responds to certain clients (e.g. those with certain hardware addresses), it will not respond to the BOOTPREQUEST packet we sent. If a DHCP server is configured so it only responds to certain clients (e.g. those with certain hardware addresses or DHCP Client Identifiers), it will not respond to the packets we send that mimic DHCP clients in the INIT state. If a DHCP server is configured so it does not send DHCPNAK packets to clients requesting topologically-inappropriate IP addresses, it will not respond the packets we send that mimic DHCP clients in the INIT-REBOOT and REBINDING states. .PP The upshot is that it is possible that dhcp_probe will be unable to provoke some BootP and DHCP servers into responding at all. .PP Flushing out such servers can be extremely difficult. One approach is to capture all UDP/IP packet destined to the BootP client port which cross your network; since most of these packets are unicast at Layer 2, capturing is only effective if .I all such packets must pass by your capture device's Ethernet interface (e.g. the capture device is located at a network choke point, or the network does not involve any Layer 2 switching). Another approach is to do UDP port scanning for all devices listening on the BootP server port, and assume that those which are listening on that port are running a BootP or DHCP server. .PP Malicious BootP or DHCP servers that forge the IP source address (and possibly the Ethernet source address) of their responses to match the values specified by .B legal_server and .B legal_server_ethersrc statements will not be detected. .SH BUGS The packet capture buffer size is limited; if a single request packet provokes more responses than will fit into the buffer, those that do not fit are silently dropped, without any diagnostic indicating that the buffer was too small. You can adjust the size of the packet capture buffer size using the .BI \-s \ capture_bufsize option. .PP We do not support non-Ethernet interfaces. .PP Because (re-)opening a packet capture file causes the file to be opened for writing (not appending), the contents of any existing packet capture file of the same name is lost when the program starts or receives a SIGUSR2 signal. If the file's previous contents should be preserved, move the old file aside before starting the program or sending it a SIGUSR2 signal. (This "feature" exists because opening a .BR pcap (3) savefile always involves writing a pcap header record to the start of the file, so pcap always opens the file using mode "w".) .PP Because .BR pcap (3) opens the packet capture file with a simple .BR fopen (3) without checking to see if the file already exists, dhcp_probe may be tricked into overwriting or corrupting an existing file. As dhcp_probe is run with root privileges, this is a serious concern. To avoid this problem, if you use the .B \-o option, ensure that the directory that will contain the capture file is writable only by root. .PP The packet capture file that is written is unparseable after the first packet. E.g. if read with .BR tcpdump (8), it reports: .IR "tcpdump: pcap_loop: truncated dump file" . .PP On platforms where .BR pcap (3) is unable to support the .I timeout argument to .IR pcap_open_live , the program may not reliably detect responses from DHCP and BootP servers, or may not function at all. .SH "SEE ALSO" .LP .BR dhcp_probe.cf (5) .TP 10 .BR pcap (3) (a.k.a. libpcap, a packet capture library), available from http://www.tcpdump.org. (An older version is available from ftp://ftp.ee.lbl.gov/libpcap.tar.Z.) .TP 10 .BR libnet (3) (a.k.a libwrite, a packet writing library), available from http://www.packetfactory.net/libnet dhcp-probe-1.3.0/doc/Makefile.in0000644000175100017510000002723311164405072016411 0ustar metro-gimetro-gi# Makefile.in generated by automake 1.10.1 from Makefile.am. # @configure_input@ # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. # This Makefile.in is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY, to the extent permitted by law; without # even the implied warranty of MERCHANTABILITY or FITNESS FOR A # PARTICULAR PURPOSE. @SET_MAKE@ VPATH = @srcdir@ pkgdatadir = $(datadir)/@PACKAGE@ pkglibdir = $(libdir)/@PACKAGE@ pkgincludedir = $(includedir)/@PACKAGE@ am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd install_sh_DATA = $(install_sh) -c -m 644 install_sh_PROGRAM = $(install_sh) -c install_sh_SCRIPT = $(install_sh) -c INSTALL_HEADER = $(INSTALL_DATA) transform = $(program_transform_name) NORMAL_INSTALL = : PRE_INSTALL = : POST_INSTALL = : NORMAL_UNINSTALL = : PRE_UNINSTALL = : POST_UNINSTALL = : build_triplet = @build@ host_triplet = @host@ subdir = doc DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 am__aclocal_m4_deps = $(top_srcdir)/m4/ac_check_func_proto.m4 \ $(top_srcdir)/m4/ac_check_struct_for.m4 \ $(top_srcdir)/m4/ist_require_libnet.m4 \ $(top_srcdir)/m4/ist_require_pcap.m4 \ $(top_srcdir)/m4/ist_sys_socket_ioctls_use_streams.m4 \ $(top_srcdir)/m4/sys_errlist.m4 $(top_srcdir)/configure.ac am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ $(ACLOCAL_M4) mkinstalldirs = $(SHELL) $(top_srcdir)/config/mkinstalldirs CONFIG_HEADER = $(top_builddir)/config.h CONFIG_CLEAN_FILES = SOURCES = DIST_SOURCES = man5dir = $(mandir)/man5 am__installdirs = "$(DESTDIR)$(man5dir)" "$(DESTDIR)$(man8dir)" man8dir = $(mandir)/man8 NROFF = nroff MANS = $(man_MANS) DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) ACLOCAL = @ACLOCAL@ AMTAR = @AMTAR@ AUTOCONF = @AUTOCONF@ AUTOHEADER = @AUTOHEADER@ AUTOMAKE = @AUTOMAKE@ AWK = @AWK@ CC = @CC@ CCDEPMODE = @CCDEPMODE@ CFLAGS = @CFLAGS@ CPP = @CPP@ CPPFLAGS = @CPPFLAGS@ CYGPATH_W = @CYGPATH_W@ DEFS = @DEFS@ DEPDIR = @DEPDIR@ ECHO_C = @ECHO_C@ ECHO_N = @ECHO_N@ ECHO_T = @ECHO_T@ EGREP = @EGREP@ EXEEXT = @EXEEXT@ GREP = @GREP@ INSTALL = @INSTALL@ INSTALL_DATA = @INSTALL_DATA@ INSTALL_PROGRAM = @INSTALL_PROGRAM@ INSTALL_SCRIPT = @INSTALL_SCRIPT@ INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ LDFLAGS = @LDFLAGS@ LIBOBJS = @LIBOBJS@ LIBS = @LIBS@ LTLIBOBJS = @LTLIBOBJS@ MAKEINFO = @MAKEINFO@ MKDIR_P = @MKDIR_P@ OBJEXT = @OBJEXT@ PACKAGE = @PACKAGE@ PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@ PACKAGE_NAME = @PACKAGE_NAME@ PACKAGE_STRING = @PACKAGE_STRING@ PACKAGE_TARNAME = @PACKAGE_TARNAME@ PACKAGE_VERSION = @PACKAGE_VERSION@ PATH_SEPARATOR = @PATH_SEPARATOR@ RANLIB = @RANLIB@ SET_MAKE = @SET_MAKE@ SHELL = @SHELL@ STRIP = @STRIP@ VERSION = @VERSION@ abs_builddir = @abs_builddir@ abs_srcdir = @abs_srcdir@ abs_top_builddir = @abs_top_builddir@ abs_top_srcdir = @abs_top_srcdir@ ac_ct_CC = @ac_ct_CC@ am__include = @am__include@ am__leading_dot = @am__leading_dot@ am__quote = @am__quote@ am__tar = @am__tar@ am__untar = @am__untar@ bindir = @bindir@ build = @build@ build_alias = @build_alias@ build_cpu = @build_cpu@ build_os = @build_os@ build_vendor = @build_vendor@ builddir = @builddir@ datadir = @datadir@ datarootdir = @datarootdir@ docdir = @docdir@ dvidir = @dvidir@ exec_prefix = @exec_prefix@ host = @host@ host_alias = @host_alias@ host_cpu = @host_cpu@ host_os = @host_os@ host_vendor = @host_vendor@ htmldir = @htmldir@ includedir = @includedir@ infodir = @infodir@ install_sh = @install_sh@ libdir = @libdir@ libexecdir = @libexecdir@ localedir = @localedir@ localstatedir = @localstatedir@ mandir = @mandir@ mkdir_p = @mkdir_p@ oldincludedir = @oldincludedir@ pdfdir = @pdfdir@ prefix = @prefix@ program_transform_name = @program_transform_name@ psdir = @psdir@ sbindir = @sbindir@ sharedstatedir = @sharedstatedir@ srcdir = @srcdir@ sysconfdir = @sysconfdir@ target_alias = @target_alias@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ man_MANS = dhcp_probe.8 dhcp_probe.cf.5 EXTRA_DIST = $(man_MANS) all: all-am .SUFFIXES: $(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(am__configure_deps) @for dep in $?; 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All rights reserved. .\" .TH DHCP_PROBE.CF 5 "Mar 9 2009" "Princeton Univ." .SH NAME dhcp_probe.cf \- configuration file for dhcp_probe .SH SYNPOSIS /etc/dhcp_probe.cf .SH DESCRIPTION The file .B /etc/dhcp_probe.cf contains configuration information used by the .BR dhcp_probe (8) daemon. dhcp_probe reads the file when it begins (and whenever it receives a SIGHUP signal). .PP The location of this file defaults to .BR /etc/dhcp_probe.cf , but may be overridden by a command-line option to .BR dhcp_probe (8). .PP The file consists of a series of statements, one per line. Each statement begins with a keyword followed by one or more arguments (depending on the keyword); keywords and arguments are separated by spaces or tabs. Statements may be specified in any order. .PP Some keywords take an .I ethernet-address argument. Ethernet address values must be written in a form that .BR ether_aton (3) recognizes; e.g. 1:2:3:4:5:6 or 00:A5:b2:0:BB:c. .PP Some keywords take an .I ip-address as a value. IP address values must be written in a form that .BR inet_aton (3) recognizes; e.g. 192.168.1.2. .PP Blank lines are ignored. Lines for which the first non-blank character is a '#' are treated as comments. Trailing comments on statements are .I not supported. .PP Because all presently-defined keywords are optional, the file may be empty, however, it must exist. .SH KEYWORDS .PP The keywords are as follows: .SS \fBchaddr\fP .RS .PP The .B chaddr statement is optional, and is used to specify the value of the .I chaddr field in the request packets sent by the program. This value is also used to compute the DHCP Client Identifier option in some of the request packets sent by the program (by prepending x'01'). .PP Specify: .IP chaddr .I ethernet-address .PP If not specified, this value defaults to the Ethernet address corresponding to the interface you specified on the commandline. .PP You might want to use the .B chaddr statement if the interface is also a DHCP client, so that sending requests with the interface's own chaddr/DHCP Client Identifier will not interfere with that functionality. .PP If you specify a value, be sure to specify a unicast Ethernet address that does not belong to any valid client on your network. .PP Correctly-functioning BootP and DHCP servers that respond will send any responses to the .I chaddr address, or in some cases, to the Ethernet broadcast address. Therefore, if you specify a value here (and it differs from your interface's Ethernet address), the program will have to place the interface into promiscuous mode to be sure it hears unicast responses. .PP Note that the .I chaddr value does not affect the Ethernet source address of the Ethernet frames sent by the program. .PP If you specify this value, you may also wish to specify the same value in the .B ether_src statement. See the description of that statement for further discussion. .SS \fBether_src\fP .RS .PP The .B ether_src statement is optional, and is used to specify the value of the .I ether_src field in the Ethernet frames sent by the program. .PP Specify: .IP ether_src .I ethernet-address .PP If not specified, this value defaults to the Ethernet address corresponding to the interface you specified on the commandline. .PP If you specify a value, be sure to specify a unicast Ethernet address that does not belong to any valid client on your network. .PP Note that this value does not affect the .I chaddr field or the DHCP Client Identifier option field in request packets sent by the program. .PP If you specified a .I chaddr value, you may also wish to specify an equal .I ether_src value. While not strictly necessary, doing so will cause any Layer 2 switches on the network to learn that this hardware address is on your leg of the network, so they will not need to flood response packets directed to that hardware address, but instead can direct the response packets only to your leg of the network. .PP Additionally, specifying the same .I ether_src value could help you discover any buggy BootP or DHCP servers that mistakenly direct their responses to the sender's ether_src (instead of to the sender's bootp_chaddr). .SS \fBserver_id\fP .RS .PP The .B server_id statement is optional, and is used to specify the value of the DHCP Server Identifer option in some of the request packets sent by the program. .PP Specify: .IP server_id .I ip-address .PP If not specified, this value defaults to 10.254.254.254. .PP The DHCP Server Identifer option appears in the packets the program sends when it mimics a DHCP client in the SELECTING state. .PP It's best that the DHCP Server Identifier option the program uses not match the IP address of any valid DHCP server on your network, to avoid confusing them. Other than that, any IP address is a reasonable value; you may wish to specify one that could never be a valid address on your network. .SS \fBclient_ip_address\fP .RS .PP The .B client_ip_address statement is optional, and is used to specify the IP address that the program should request, or claim to have a lease on. .PP Specify: .IP client_ip_address .I ip-address .PP If not specified, this value defaults to 172.31.254.254. .PP When the program generates a DHCPREQUEST packet that mimics a DHCP client that is in the INIT-REBOOT or SELECTING state, the packet contains a Requested IP Address option containing this value. When the program generates a DHCPREQUEST packet that mimics a DHCP client that is in the REBINDING state, the packet contains a .I ciaddr field containing this value. .PP It's best that the value the program uses not match the IP address of any valid DHCP client on your network, to avoid confusing valid DHCP servers. .PP It's extremely useful if the value the program uses .I not be valid (topologically speaking) for the physical network on which the program sends the packets. Sending a topologically inappropriate value may stimulate some DHCP servers to respond with a DHCPNAK, which helps the program flush out DHCP servers. .SS \fBresponse_wait_time\fP .RS .PP The .B response_wait_time statement is optional, and is used to specify how long the program should wait for responses after sending a single request packet. .PP Specify .IP response_wait_time .I num_milliseconds .PP If not specified, this value defaults to 5000 milliseconds (5 seconds). .PP The value is specified in milliseconds, and must fit into an 'int' on your host. (Values larger than an 'int' may be silently misinterpreted.) Typical values are on the order of a few thousand milliseconds; i.e. several seconds. .SS \fBcycle_time\fP .RS .PP The .B cycle_time statement is optional, and is used to specify how long the program should sleep between each probe cycle. .PP Specify .IP cycle_time .I num_seconds .PP If not specified, this value defaults to 300 seconds. .PP The value is specified in seconds, and must into into an 'unsigned int' on your host. (Values larger than an 'unsigned int' may be silently misinterpreted.) Typical valus range from several hundred to several thousand seconds (i.e. several minutes to several hours). .PP During each probe cycle, the program sends one of the request packet flavors, captures any responses that arrive during the .IR response_wait_time , then repeats this for each of the other request packet flavors. After doing this for each flavor of request packet, the probe cycle is complete, and the program sleeps for the .IR cycle_time . .SS \fBlegal_server\fP .RS .PP The .B legal_server statement is optional, and is used to specify the IP source address of responses that come from a legal BootP or DHCP server on your network. The statement may be specified multiple times. .PP Specify .IP legal_server .I ip-address .PP If not specified, the program assumes there are no legal BootP and DHCP servers on your network; all responses will be treated as coming from an unknown DHCP server. .PP When the program receives a response packet, it compares the packet's IP source address to all the addresses you have specified in .B legal_server statements. If the IP source address matches one of these values, the response is deemed to have come from a known DHCP server, and is ignored. If the IP source address does not match any of these values (or you do not specify any .BR legal_server ), then the program logs a message that reports the packet's IP source address and Ethernet source address. Additionally, if the program was started with the .B \-o commandline option, the packet is also written to a packet capture file. .PP If both .B legal_server and .B legal_server_ethersrc statements appear, then a response must have both a valid IP source and a valid ethernet source to be considered to have come from a known DHCP server. .PP When relaying a response from a server to a client, some BootP Relay Agents may change the response's IP source address, replacing the server's IP address with that of the BootP Relay Agent. If BootP Relay Agents on your network do this, you will need to specify their IP addresses here instead. .SS \fBlegal_server_ethersrc\fP .RS .PP The .B legal_server_ethersrc statement is optional, and is used to specify the Ethernet source address of responses that come from a legal BootP or DHCP server on your network. The statement may be specified multiple times. .PP Specify .IP legal_server_ethersrc .I ethernet-address .PP If not specified, the program does not check the Ethernet source address of responses. .PP If you have specified at least one .B legal_server_ethersrc value, when the program receives a response packet, the program compares the packet's Ethernet source address to all the addresses you have specified in .B legal_server_ethersrc statements. If the Ethernet source does not match one of these values, the response is deemed to have come from an unknown DHCP server; the program logs a message that reports the packet's IP source address and Ethernet source address. Additionally, if the program was started with the .B \-o commandline option, the packet is also written to a packet capture file. .PP If both .B legal_server and .B legal_server_ethersrc statements appear, then a response must have both a valid IP source and a valid ethernet source to be considered to have come from a known DHCP server. .PP Each router on the path from the DHCP server to the DHCP client will overwrite the Ethernet source address field. So if you specify any .B legal_server_ethersrc statements, also list the Ethernet source value(s) for the last hop router(s). A BootP Relay Agent on the path from the DHCP server to the DHCP client will overwrite the Ethernet field. So also list the Ethernet source value(s) for the BootP Relay Agent. (The BootP Relay Agent is often co-resident in the last-hop IP router, so you may have already taken care of this when you listed the last-hop router(s). .PP The .B legal_server_ethersrc statement is considered experimental in version 1.3.0, as it has received only limited testing. .SS \fBlease_network_of_concern\fP .RS .PP The .B lease_network_of_concern statement is optional, and may be specified multiple times. The statement is used to specify one or more network ranges that are of concern relative to the IP addresses distributed by a rogue BootP/DHCP server. .PP Specify .IP lease_network_of_concern .I network-ip-address network-mask .PP Specifying one or more .B lease_network_of_concern statements activates the "Lease Networks of Concern" feature. .PP When the program receives a response packet that it determines to be from a rogue BootP/DHCP server, if the "Lease Networks of Concern" feature is active, the program will examine the packet further. If the packet's .B yiaddr field is non-zero, the value in that field is tested to see if it falls within any of the "Leases Networks of Concern." If it does, then the message the program logs is extended to also report this fact, and to include the value of the .B yiaddr field. Furthermore, if an .B alert_program_name2 was specified, when that program is called, it is called with an additional .B "\-y yiaddr" option. (This is not supported if an .B alert_program_name was specified, as the older .B alert_program_name uses a syntax that cannot be extended.) .PP The "Lease Networks of Concern" feature does not change the way the program probes for or detects rogue BootP/DHCP servers. Upon detection of a rogue BootP/DHCP server, the feature only may cause additional information to be added to the message logged (and passed to .BR alert_program_name2 ). .PP This feature may be used, for example, by specifying your networks' legitimate address ranges as "Lease Networks of Concern". While most rogue BootP/DHCP servers distribute private IP addresses, or send DHCPNAKs to legitimate clients, other more damaging rogue BootP/DHCP servers may distribute IP addresses that fall within your legitimate network ranges. This will help differentiate those more damaging incidents from the more common ones. .SS \fBalert_program_name\fP .RS .PP The .B alert_program_name statement is optional, and may be used to specify the name of an external program that should be run every time a response packet is received from an unexpected server. .PP Note that using the newer .B alert_program_name2 statement is preferrable. .PP Specify .IP alert_program_name .I /absolute/path/name .PP Unexpected response packets are reported as a matter of course, and optionally written to a packet capture file. You may use an .B alert_program_name to provide additional handling of the event, for example, to alert an appropriate party via mail or paging. The .B alert_program_name you specify is called with four arguments in the following order: the name of the calling program (e.g. .BR dhcp_probe ), the name of the interface on which the unexpected response packet was received, the IP source address of the packet, and the Ethernet source address of the packet. .PP As the .B alert_program_name is called with the same privileges as .B dhcp_probe (i.e. root), you should exercise caution to ensure that the alert program is safe for a privileged user to execute. .PP Because the syntax supported by the external program is not extensible, the use of .B alert_program_name2 is preferrable. .PP You may not specify both .B alert_program_name and .BR alert_program_name2 . .SS \fBalert_program_name2\fP .RS .PP The .B alert_program_name2 statement is optional, and may be used to specify the name of an external program that should be run every time a response packet is received from an unexpected server. .PP Specify .IP alert_program_name2 .I /absolute/path/name .PP Unexpected response packets are reported as a matter of course, and optionally written to a packet capture file. You may use an .B alert_program_name2 to provide additional handling of the event, for example, to alert an appropriate party via mail or paging. The .B alert_program_name2 you specify is called with the following required options: .PP .RS .nf -p the name of the calling program (e.g. dhcp_probe), -I the name of the interface on which the unexpected response packet was received -i the IP source address of the packet -m Ethernet source address of the packet .fi .RE .PP The following non-required options may also be passed: .PP .RS .nf -y the non-zero yiaddr value from the packet, when it falls inside a "Lease Network of Concern" .fi .RE .PP The .B alert_program_name2 program you specify must ignore options or arguments it does not recognize; this is to ensure it remains forward-compatible with future enhancements to .BR dhcp_probe . It must be prepared to accept options in any order. .PP As the .B alert_program_name2 is called with the same privileges as .B dhcp_probe (i.e. root), you should exercise caution to ensure that the alert program is safe for a privileged user to execute. .PP You may not specify both .B alert_program_name and .BR alert_program_name2 . .RE .SH EXAMPLE An example .B /etc/dhcp_probe.cf file follows: .PP .RS .nf # dhcp_probe.cf: config file for dhcp_probe # # General syntax: # Comment lines start with '#' (trailing comments not permitted). # Blank lines are OK. # Tokens within a line should be separated with spaces and/or tabs. # Entries in the file may be in any order. # Any 'ethernet-address' must be written in a form that ether_aton(3) recognizes; e.g. # 1:2:3:4:5:6 00:A5:b2:0:BB:c # Any 'ip-address' must be written in a form that inet_aton(3) recognizes; e.g. # 192.168.1.2 # # ---------------------------------------------------------------------------------- # # CLIENT HARDWARE ADDRESS # # By default, for the 'chaddr' field in the BootP header, we use the Ethernet # address corresponding to the interface you specified. # We also use this value to compute the DHCP Client Identifier option (by prepending x'01'). # You may optionally override this value. # (Note that this does not override the Ethernet Src address in the Ethernet frame we send.) # # You might want to do this if our interface is also a DHCP client, so # sending requests with the interface's own chaddr/DHCP Client Identifier would interfere with # that functionality. # # If you specify a value, be sure to specify an Ethernet address that does not belong to # any valid client on your network. Be sure to specify a unicast Ethernet address. # # Syntax: # chaddr enet-addr chaddr 0:0:0:1:2:3 # ---------------------------------------------------------------------------------- # # ETHERNET SOURCE ADDRESS # # By default, for the 'ether_shost' field in the Ethernet header, we use the Ethernet # address corresponding to the interface you specified. # You may optionally override this value. # (Note that this does not override the 'chaddr' in the BootP header, nor the DHCP Client Identifier.) # # If you are specify the 'chaddr' statement, you might want to also do this, so you don't miss buggy # DHCP servers that respond (incorrectly) to ether_src instead of to chaddr. # # If you specify a value, be sure to specify an Ethernet address that does not belong to # any valid client on your network. Be sure to specify a unicast Ethernet address. # # Syntax: # ether_src enet-addr ether_src 0:0:0:1:2:3 # ---------------------------------------------------------------------------------- # # DHCP SERVER IDENTIFIER # # When we generate a DHCPREQUEST packet corresponding to a client that is in the SELECTING # state, the options field must contain a 'DHCP Server Identifier' option, indicating the # IP address of the DHCP server the client is selecting. It's best that the value we use # not match the IP address of any valid DHCP server, to avoid confusing them. The program # provides a default value of 10.254.254.254, which you may override here. # # Syntax: # server_id ip-addr server_id 10.1.2.3 # ---------------------------------------------------------------------------------- # # CLIENT IP ADDRESS # # When we generate a DHCPREQUEST packet corresponding to a client that is in the INIT-REBOOT # or SELECTING state, the options field must containg a 'Requested IP Address' option, indicating # the IP address the client is requesting. When we generate a DHCPREQUEST packet corresponding # to a client that is in the REBINDING state, the 'ciaddr' field in the BootP header must contain # the IP address that the DHCP client presently has leased and wishes to renew. # # In all these cases, it's best that the value we use not match the IP address of any valid DHCP client, # to avoid confusing the valid DHCP servers. # # Furthermore, it is extremely useful if the value we use *not* be valid (topologically speaking) for the # physical network on which we send the packets. Sending a topologically inappropriate value # may stimulate some DHCP servers to respond with a DHCPNAK, which helps us flush out DHCP servers. # (This will probably happen only in response to the packets we sending when pretending to be in REBINDING state.) # # The program provides a default value of 172.31.254.254, which you may override here. # # Syntax: # client_ip_address ip-addr # client_ip_address 172.31.254.254 # ---------------------------------------------------------------------------------- # # RESPONSE WAIT TIME # # After sending one packet, we wait for responses. The length of time we wait # is the 'response_wait_time'. The program provides a default value of 5000, which you # may override here. The value is measured in milliseconds, and must fit into # an 'int' on your host. (Values larger than an 'int' may be silently misinterpreted.) # Typical values are on the order of a few thousand milliseconds; i.e. several seconds. # # Syntax: # response_wait_time num_milliseconds # response_wait_time 5000 # ---------------------------------------------------------------------------------- # # CYCLE WAIT TIME # # For each flavor packet, we send the packet and listen for responses to that packet. # After doing this for all flavor packets, we go to sleep for the "cycle_time", # then repeat the process. The program provides a default value of 300, which you # may override here. The value is measured in seconds, and must fit into an # 'unsigned int' on your host. (Values larger than an 'unsigned int' may be silently # misinterpreted.) Typical valus range from several hundred to several thousand # seconds (i.e. several minutes to several hours). # # Syntax: # cycle_time num_seconds cycle_time 1200 # ---------------------------------------------------------------------------------- # # LEGAL SERVERS' IP SOURCE ADDRESSES # # After sending one packet, we wait for responses. Responses from legal BootP or DHCP # servers are ignored; presumably you aren't interesting in discovering them. # Specify a legal server's IP source address with the 'legal_server' statement. # The value you specify is compared to the IPsrc field in each response's IP header. # # If you have multiple legal servers, specify each in a separate statement. # If your BootP Relay Agents overwrite the server's IP address in the IPsrc field # with their own IP addresses, you will need to list the IP addresses of the # BootP Relay Agents. # # Alternatively, do not specify any legal_server statements at all, so *no* responses # will be considered legal. # (This is different from the way legal_server_ethersrc statements are handled.) # # If both legal_server and legal_server_ethersrc statements appear, then a response # must have both a valid IP source and a valid ethernet source to be considered legal. # # Syntax: # legal_server ip-addr legal_server 192.168.1.2 legal_server 192.168.3.4 # ---------------------------------------------------------------------------------- # # LEGAL SERVERS' ETHERNET SOURCE ADDRESSES # # Specify a legal server's Ethernet source address with the 'legal_server_ethersrc' statement. # The value you specify is compared to the ethernet_src field in each response's IP header. # # If you have multiple legal ethernet sources, specify each in a separate statement. # Each router on the path from the DHCP server to the DHCP client will overwrite # the ethernet_src field. So also list the ethernet_src value(s) for the last hop router(s). # The BootP Relay Agent on the path from the DHCP server to the DHCP client will overwrite # the ethernet_src field. So also list the ethernet_src value(s) for the BootP Relay Agent. # (This is often co-resident in the last-hop IP router, so you may have already taken care # of this when you listed the last-hop router(s). # # Alternatively, do not specify any legal_server_ethersrc statements at all. # If none are specified, then all ethernet_src values are considered legal. # (This is different from the way legal_server statements are handled.) # # If both legal_server and legal_server_ethersrc statements appear, then a response # must have both a valid IP source and a valid ethernet source to be considered legal. # # Syntax: # legal_server_ethersrc enet-addr # legal_server_ethersrc 0:2:4:ab:cd:ef # legal_server_ethersrc 0:17:30:1:0A:3 # ---------------------------------------------------------------------------------- # # ALERT PROGRAM NAME # # In addition to logging a response received from an unexpected server, we will optionally # call a user-specified 'alert program' if one is specified here. To use this feature, # specify the absolute pathname of a program we should execute for each unexpected response. # Either specify it using the older 'alert_program_name' statement, or (preferrably) using # the newer 'alert_program_name2' statement. (The newer statement is preferrable because # it calls the alert program with a more extensible syntax.) You may not specify # both alert_program_name and alert_program_name2. # # Old style alert program: # # Syntax: # alert_program_name /absolute/path/name # # The program specified via 'alert_program_name' will be called as follows: # /absolute/path/name name_of_calling_program name_of_interface_on_which_the_response_was_received IP_source_of_the_response ether_src_of_the_response # # # Newer style alert program: # # Syntax: # alert_program_name2 /absolute/path/name # # The program specified via 'alert_program_name2' will be called as follows: # /absolute/path/name -p name_of_calling_program -I name_of_interface_on_which_the_response_was_received -i IP_source_of_the_response -m ether_src_of_the_response [-y yiaddr_when_in_lease_networks_of_concern] # The options may appear in any order. # The program must silently ignore any options or arguments it does not recognize, # so as to be forward-compatible with future enhancements to dhcp_probe. alert_program_name2 /usr/local/etc/dhcp_probe_notify2 # ---------------------------------------------------------------------------------- # # LEASE NETWORKS OF CONCERN # # Optionally define one or more network ranges that are to be treated as # being of special concern when a rogue BootP/DHCP server is detected sending response # that contains a 'yiaddr' value that falls into any of these ranges. # Specify each such network ranges of concern in a separate statement. # When the yiaddr value in a rogue server's response falls into any of these ranges, # the message logged will contain additional text remarking on this fact. # And if an alert_program_name2 is used, that alert program # will be called with an extra option so it can also act on that fact. # # If you specify all your networks' legitimate IP ranges, this can help you # take additional notice of rogue BootP/DHCP servers that distribute *your* # network addresess, rather than simply distribute private IP address or # send DHCPNAKs to legitimate clients. # # Syntax: # lease_network_of_concern IP-network-address network-mask lease_network_of_concern 128.112.0.0 255.255.0.0 lease_network_of_concern 140.180.0.0 255.255.0.0 .fi .RE .SH SEE ALSO .BR dhcp_probe (8) dhcp-probe-1.3.0/PLATFORMS0000644000175100017510000000423411164405072015065 0ustar metro-gimetro-giPlatform-Specific Notes for dhcp_probe The author develops this program on Solaris 9 on SPARC, so that's the platform you can expect to work. The author has not ported the program to other platforms, and in fact, it currently ignores much of what 'configure' discovers. Others have contributed patches to make this program run on several other platforms. The author is usually unable to test whether these patches work on those platforms. FREEBSD If the libnet 1.1.x header is installed in /usr/local/include/libnet11/ you will probably need to specify --with-libnet-include=/usr/local/include/libnet11/ If the libnet 1.1.x library is installed in /usr/local/lib/libnet11/ you will probably need to specify --with-libnet-lib=/usr/local/lib/libnet11/ You may need to specify --mandir=/usr/local/man at configure-time. SOLARIS The current version of the program has been successfully built and used on the following versions of Solaris: Solaris 9 on SPARC gcc 3.3.6 libpcap 0.9.8 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Earlier versions of the program has been successfully built and used on on the following versions of Solaris; it is possible that the current version may still build and run on them, but this has not been verified by the author: Solaris 9 on SPARC gcc 3.0.4 libpcap 0.8.3 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Solaris 9 on SPARC gcc 3.3.3 libpcap 0.8.3 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Solaris 9 on SPARC gcc 3.3.3 libpcap 0.9.3 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Solaris 9 on SPARC gcc 3.3.3 libpcap 0.9.4 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Solaris 9 on SPARC gcc 3.3.6 libpcap 0.9.5 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) Solaris 9 on SPARC gcc 3.3.6 libpcap 0.9.7 libnet 1.1.2.1 (with the libnet_cq_end_loop() change described above) dhcp-probe-1.3.0/extras/0000755000175100017510000000000011165135667015111 5ustar metro-gimetro-gidhcp-probe-1.3.0/extras/README0000640000175100017510000000346311164405072015760 0ustar metro-gimetro-giREADME for extras dhcp_probe.cf.sample is a sample dhcp_probe configuration file. You may find it useful to use as a template. dhcp_probe_notify2 is a sample alert program, suitable for specification via the alert_program_name2 configuration file statement. It is a Perl script that sends email. If you choose to use, it, install it someplace on your system where the dhcp_probe daemon can execute it. You will need to edit the definitions at the top of this script. Note that it calls the mail-throttled script below. dhcp_probe_notify is a sample alert program, similar to dhcp_probe_notify2; see the description above for 'dhcp_probe_notify2' for details. Unlike dhcp_probe_notify2, this program supports the older syntax used by the alert_program_name configuration file statement, rather than the newer syntax used by the alert_program_name2 configuration file statement. Because the older syntax is not extensible, this version cannot provide all the same features as 'dhcp_probe_notify2'. mail-throttled is a perl script called by dhcp_probe_notify2 or dhcp_probe_notify to throttle the frequency of messages that share a unique "key" specified by its caller. If you choose to use, it, install it someplace on your system where the dhcp_probe_notify script (called by dhcp_probe daemon) can execute it. You will need to edit the definitions at the top. dhcp_probe.startup.Solaris9 is a sample startup script that works in Solaris 9. If you choose to use it, place it in /etc/init.d/ with the filename 'dhcp_probe', and the symlinks documented in the script's comments. dhcp_probe.FreeBSD.sh is a sample rcNG script for use with FreeBSD. If you choose to use it, place it in /usr/local/etc/rc.d/ with the filename 'dhcp_probe.sh', then enable it in /etc/rc.conf: dhcp_probe_enable="YES" dhcp_probe_flags="" dhcp-probe-1.3.0/extras/dhcp_probe.FreeBSD.sh0000640000175100017510000000032411164405072020743 0ustar metro-gimetro-gi#!/bin/sh # PROVIDE: dhcp_probe # REQUIRE: LOGIN . /etc/rc.subr name="dhcp_probe" rcvar=`set_rcvar` load_rc_config $name : ${dhcp_probe__enable="NO"} command=/usr/local/sbin/dhcp_probe run_rc_command "$1" dhcp-probe-1.3.0/extras/mail-throttled0000750000175100017510000001344011164405072017752 0ustar metro-gimetro-gi#!/usr/local/bin/perl5 # $Header: /usr/local/etc/RCS/mail-throttled,v 1.11 2008/12/06 01:50:28 root Exp $ # mail-throttled [-l] [-D dbm_file] -k key -t throttle_seconds [-f from] -r recipient [-d] [-T tie_attempts_max] [-S tie_retry_sleep] [-s subject] # # Sends mail body (read from STDIN) to 'recipient', but avoids doing so "too frequently." # # You provide a 'key', which is an arbitrary string used to identify this notification. # You also provide 'throttle_seconds', an integer. If we've sent anything that # specified this 'key' within the last 'throttle_seconds', we do not send the message. # Otherwise, we send the message, and the remember that we've sent a message for this 'key' # at the current time. # # This key/timesent tuples are stored on-disk, in a dbm. As a result, the 'key' # you supply must satisfy the syntactic requirements for dbm keys. # The caller needs to have permission to read and write this DBM (and create it if # it does not already exist). If you fail to specify a dbm_file, we'll use a default # value, which may not be what you want (since the caller might not be able to r/w that # particular DBM). # We never clean this dbm. You can safely erase it entirely, if you don't mind losing # the state, and you know the caller has permission to create a new instance of the DBM. # # The 'recipient' should be a valid email address. Naturally, it should not # be one that will cause any ack or bounce mail to return to us! # If there are several addresses (delimited by spaces), be sure to quote them as a single arg. # # If a subject is specified, be sure to quote it if it contains any spaces or other shell # metachars. # # If -l is specified, then any errors, warnings, or debugging output is written to syslog # in addition to its usual destination (STDERR). This is helpful if you call this from an # environment where STDERR may get lost. # # Irwin Tillman use Getopt::Std; use GDBM_File; use Errno qw(EAGAIN); use Sys::Syslog qw(:DEFAULT setlogsock); use strict; use warnings; use vars qw($DBM_FILE_DEFAULT $MAILCMD $MAILCMD_OPTS $FROM_DEFAULT); $DBM_FILE_DEFAULT = '/usr/local/lib/mail-throttled.gdbm'; $MAILCMD = "/usr/lib/sendmail"; # $MAILCMD_OPTS = "-t -ODeliveryMode=queueonly"; $MAILCMD_OPTS = "-t"; $FROM_DEFAULT = "root"; my $SYSLOG_FACILITY="daemon"; # name of facility to use if syslogging my $SYSLOG_OPT = 'pid,cons'; # syslog options to use if syslogging, ignored otherwise my $SYSLOG_PRIORITY = 'LOG_ERR'; # The tie() call sometimes fails with EAGAIN. # Perhaps that's due to some other process having the DBM open; # in fact, that may be more likely if the process that calls us may calls us multiple times in quick succession. # So when tie() fails with EAGAIN, we can sleep and retry some number of times before giving up entirely. my $TIE_ATTEMPTS_MAX = 3; # number of times to try tie() before giving up my $TIE_RETRY_SLEEP = 1; # seconds to sleep before retrying tie() (my $prog = $0) =~ s/.*\///; use vars qw($opt_f $opt_D $opt_d $opt_k $opt_l $opt_r $opt_s $opt_S $opt_t $opt_T); &getopts('dD:f:k:lr:s:S:t:T:'); my $debug = $opt_d || ""; my $dbm_file = $opt_D || $DBM_FILE_DEFAULT; my $key = $opt_k || ""; my $from = $opt_f || $FROM_DEFAULT; my $recipient = $opt_r || ""; my $throttle_secs = $opt_t || 1; my $subject = $opt_s || ""; my $also_syslog = $opt_l || ""; my $tie_attempts_max = $opt_T || $TIE_ATTEMPTS_MAX; # we deliberately override if CLI option specifies 0, as that makes no sense my $tie_retry_sleep = $opt_S || $TIE_RETRY_SLEEP; if ($also_syslog) { # init our use of syslog # setlogsock('unix'); # talk to syslog with UNIX domain socket, not INET domain. XXX causes failure in Solaris 7 openlog($prog, $SYSLOG_OPT, $SYSLOG_FACILITY); } my_warn("${prog}:\nkey=$key\nthrottle_secs=$throttle_secs\nfrom=$from\nrecipient=$recipient\ntie_attempts_max=$tie_attempts_max\ntie_retry_sleep=$tie_retry_sleep\nsubject=$subject") if $debug; # certain options and args are required &Usage() unless ($key && $throttle_secs && $recipient); my %last_sent = (); my $tie_succeeded = 0; my $tie_attempts_left = $TIE_ATTEMPTS_MAX; while ($tie_attempts_left--) { if (tie(%last_sent, 'GDBM_File', $dbm_file, &GDBM_WRCREAT, 0644)) { $tie_succeeded = 1; last; } # the tie() failed if ($! == EAGAIN) { # The failure may be due to a transient problem. # Retrying may help. sleep $TIE_RETRY_SLEEP; next; } else { # Some other (presumably more serious) error. last; } } unless ($tie_succeeded) { my_warn("${prog}: can't tie ${dbm_file}: $!"); exit 10; } my @mailbody = ""; @mailbody = ; # read it even if we decide not to send it my $now = time; my_warn("now = $now") if $debug; $last_sent{$key} = 0 unless defined($last_sent{$key}); # so it's defined before we use it in subtraction (placate use strict) if ($now - $last_sent{$key} >= $throttle_secs) { my_warn("last_sent = $last_sent{$key}, will send") if $debug; unless (open(MAIL, "| $MAILCMD $MAILCMD_OPTS -f\"$from\"")) { my_warn("${prog}: error executing '${MAILCMD}': open(): $!"); exit 20; } print MAIL "From: $from\n", "To: $recipient\n", ($subject ? "Subject: $subject\n" : "") , "\n", @mailbody; unless (close(MAIL)) { my_warn("${prog}: error executing '${MAILCMD}': close(): " . ($! ? "syserror closing pipe: $!" : "wait status $? from pipe" ) ); exit 21; } $last_sent{$key} = $now; } else { my_warn("last_sent = $last_sent{$key}, suppressing") if $debug; } untie %last_sent; exit 0; sub Usage { my_warn("Usage: $prog [-l] [-D dbm_file] -k key -t throttle_seconds [-f from] -r recipient [-T tie_attempts_max] [-S tie_retry_sleep] [-s subject]"); exit 1; } sub my_warn { # Just a wrapper for warn, but with a possible copy to syslog too. my $msg = shift; warn $msg, "\n"; syslog($SYSLOG_PRIORITY, $msg) if $also_syslog; return; } dhcp-probe-1.3.0/extras/dhcp_probe_notify0000750000175100017510000001310711164405072020516 0ustar metro-gimetro-gi#!/usr/local/bin/perl -w # dhcp_probe_notify calling_prog_name interface_name IPaddress MACaddress # # External program called by dhcp_probe upon response of a response from an unexpected BootP/DHCP server. # # This version obeys the syntax provided by the old 'alert_program_name' statement, # not the syntax provided by the newer 'alert_program_name2' statement. # Use of the newer syntax is preferred; dhcp_probe_notify2 supports that newer syntax. # # Called via specification of 'alert_program_name' in /etc/dhcp_probe.cf file. # # Arguments: # calling_prog_name the name of the calling program (e.g. 'dhcp_probe') # interface_name the name of the interface on which the unexpected response packet arrived (e.g. 'qfe0') # IPaddress the IP source address of the unexpected response packet (e.g. '192.168.0.1') # MACaddress the Ethernet source address of the unexpected response packet (e.g. '0:1:2:3:4:5') # # May send email subject to throttling. # May send page subject to throttling. # # You will need to edit the definitions below. # # # XXX Sometimes our calls to THROTTLE_MAIL_CMD or THROTTLE_PAGE_CMD command fail. # I've made the possible failures (open() and close() calls) more verbose when they fail, # to attempt to provide more info, but I still don't know what causes the failures. # # Irwin Tillman use Sys::Hostname; use Sys::Syslog qw(:DEFAULT setlogsock); use Time::HiRes qw(gettimeofday); # from CPAN use strict; my $SYSLOG_FACILITY="daemon"; # name of facility to use if syslogging my $SYSLOG_OPT = 'pid,cons'; # syslog options to use if syslogging, ignored otherwise use vars qw($VERBOSE); $VERBOSE = 1; # produce more verbose messages # we may send one piece of mail this way, subject to frequency throttling. # Use these for regular email (not a page). use vars qw($THROTTLE_MAIL_CMD $THROTTLE_MAIL_TIMEOUT $THROTTLE_MAIL_FROM $THROTTLE_MAIL_RECIPIENT $THROTTLE_MAIL_RECIPIENT_TEST $THROTTLE_MAIL_SUBJECT); $THROTTLE_MAIL_CMD = "/usr/local/etc/mail-throttled"; # set to "" to disable $THROTTLE_MAIL_TIMEOUT = 600; # seconds $THROTTLE_MAIL_FROM = "root"; $THROTTLE_MAIL_RECIPIENT = "root someone\@example.org"; $THROTTLE_MAIL_SUBJECT = "unexpected BootP/DHCP server"; # we may also send another piece of email this way, subject to frequency throttling. # Use these for paging. use vars qw($THROTTLE_PAGE_CMD $THROTTLE_PAGE_TIMEOUT $THROTTLE_PAGE_RECIPIENT); $THROTTLE_PAGE_CMD = "/usr/local/etc/mail-throttled"; # set to "" to disable $THROTTLE_PAGE_TIMEOUT = 600; # seconds $THROTTLE_PAGE_RECIPIENT = "rootpager someones-pager\@example.org"; # You shouldn't need to edit anything below (my $prog = $0) =~ s/.*\///; # init our use of syslog # setlogsock('unix'); # talk to syslog with UNIX domain socket, not INET domain. XXX causes failure in Solaris 7 openlog($prog, $SYSLOG_OPT, $SYSLOG_FACILITY); my $hostname = hostname(); my ($calling_program, $ifname, $ip_src, $ether_src) = @ARGV; my ($seconds, $microseconds) = gettimeofday; # from Time::HiRes on CPAN my $timestamp = scalar(localtime($seconds)); $timestamp =~ s/(\d\d:\d\d:\d\d)/$1.$microseconds/; # glue microsends to end of seconds if ($THROTTLE_MAIL_CMD) { # This command suppresses the message if it's sent a message to 'key' within 'throttle_seconds' # I use the calling program's name and the offender's hardware address as the key. unless (open(THROTTLE_MAIL, "| $THROTTLE_MAIL_CMD -l -k ${calling_program}_mail_$ether_src -t $THROTTLE_MAIL_TIMEOUT -f \"$THROTTLE_MAIL_FROM\" -r \"$THROTTLE_MAIL_RECIPIENT\" -s\"$THROTTLE_MAIL_SUBJECT (MAC=${ether_src}, IP=${ip_src})\"")) { my_message('LOG_ERR', "${prog}: failure trying to send throttled email: can't execute '${THROTTLE_MAIL_CMD}': open(): $!"); exit 20; } print THROTTLE_MAIL $timestamp, "\n", "\n", "$calling_program detected an unexpected BootP/DHCP server.\n", "$hostname interface=${ifname}, IP source=${ip_src}, Ethernet source=${ether_src}\n"; print THROTTLE_MAIL "\nThis means there *is* a rogue BootP/DHCP server operating.\n" if $VERBOSE; unless (close(THROTTLE_MAIL)) { my_message('LOG_ERR', "${prog}: failure trying to send throttled email: error executing '${THROTTLE_MAIL_CMD}': close(): " . ($! ? "syserr closing pipe: $!" : "wait status $? from pipe" ) . "\n" ); exit 21; } } if ($THROTTLE_PAGE_CMD) { # This command suppresses the message if it's sent a message to 'key' within 'throttle_seconds' # I use the calling program's name and the offender's hardware address as the key. unless (open(THROTTLE_PAGE, "| $THROTTLE_PAGE_CMD -l -k ${calling_program}_page_$ether_src -t $THROTTLE_PAGE_TIMEOUT -r \"$THROTTLE_PAGE_RECIPIENT\"")) { my_message('LOG_ERR', "${prog}: failure trying to send throttled page: can't execute '${THROTTLE_PAGE_CMD}': open(): $!\n"); exit 30; } print THROTTLE_PAGE "rogue DHCP server IP=$ip_src MAC=$ether_src seen via $hostname interface $ifname\n"; print THROTTLE_PAGE "This means there *is* a rogue BootP/DHCP server operating.\n" if $VERBOSE; unless (close(THROTTLE_PAGE)) { my_message('LOG_ERR', "${prog}: failure trying to send throttled page: error executing '${THROTTLE_PAGE_CMD}': close(): " . ($! ? "syserr closing pipe: $!" : "wait status $? from pipe" ) . "\n" ); exit 31; } } exit 0; sub my_message { # Call with a syslog priority constant and a message string. # We write the message to syslog, using the specified priority. # Your message should not contain a newline. my($priority, $msg) = @_; syslog($priority, $msg); return; } dhcp-probe-1.3.0/extras/dhcp_probe.cf.sample0000640000175100017510000002315211164405072020774 0ustar metro-gimetro-gi# dhcp_probe.cf: config file for dhcp_probe # # General syntax: # Comment lines start with '#' (trailing comments not permitted). # Blank lines are OK. # Tokens within a line should be separated with spaces and/or tabs. # Entries in the file may be in any order. # Any 'ethernet-address' must be written in a form that ether_aton(3) recognizes; e.g. # 1:2:3:4:5:6 00:A5:b2:0:BB:c # Any 'ip-address' must be written in a form that inet_aton(3) recognizes; e.g. # 192.168.1.2 # # ---------------------------------------------------------------------------------- # # CLIENT HARDWARE ADDRESS # # By default, for the 'chaddr' field in the BootP header, we use the Ethernet # address corresponding to the interface you specified. # We also use this value to compute the DHCP Client Identifier option (by prepending x'01'). # You may optionally override this value. # (Note that this does not override the Ethernet Src address in the Ethernet frame we send.) # # You might want to do this if our interface is also a DHCP client, so # sending requests with the interface's own chaddr/DHCP Client Identifier would interfere with # that functionality. # # If you specify a value, be sure to specify an Ethernet address that does not belong to # any valid client on your network. Be sure to specify a unicast Ethernet address. # # Syntax: # chaddr enet-addr # chaddr 0:0:0:1:2:3 # ---------------------------------------------------------------------------------- # # ETHERNET SOURCE ADDRESS # # By default, for the 'ether_shost' field in the Ethernet header, we use the Ethernet # address corresponding to the interface you specified. # You may optionally override this value. # (Note that this does not override the 'chaddr' in the BootP header, nor the DHCP Client Identifier.) # # If you are specify the 'chaddr' statement, you might want to also do this, so you don't miss buggy # DHCP servers that respond (incorrectly) to ether_src instead of to chaddr. # # If you specify a value, be sure to specify an Ethernet address that does not belong to # any valid client on your network. Be sure to specify a unicast Ethernet address. # # Syntax: # ether_src enet-addr # ether_src 0:0:0:1:2:3 # ---------------------------------------------------------------------------------- # # DHCP SERVER IDENTIFIER # # When we generate a DHCPREQUEST packet corresponding to a client that is in the SELECTING # state, the options field must contain a 'DHCP Server Identifier' option, indicating the # IP address of the DHCP server the client is selecting. It's best that the value we use # not match the IP address of any valid DHCP server, to avoid confusing them. The program # provides a default value of 10.254.254.254, which you may override here. # # Syntax: # server_id ip-addr # server_id 10.254.254.254 # ---------------------------------------------------------------------------------- # # CLIENT IP ADDRESS # # When we generate a DHCPREQUEST packet corresponding to a client that is in the INIT-REBOOT # or SELECTING state, the options field must containg a 'Requested IP Address' option, indicating # the IP address the client is requesting. When we generate a DHCPREQUEST packet corresponding # to a client that is in the REBINDING state, the 'ciaddr' field in the BootP header must contain # the IP address that the DHCP client presently has leased and wishes to renew. # # In all these cases, it's best that the value we use not match the IP address of any valid DHCP client, # to avoid confusing the valid DHCP servers. # # Furthermore, it is extremely useful if the value we use *not* be valid (topologically speaking) for the # physical network on which we send the packets. Sending a topologically inappropriate value # may stimulate some DHCP servers to respond with a DHCPNAK, which helps us flush out DHCP servers. # (This will probably happen only in response to the packets we sending when pretending to be in REBINDING state.) # # The program provides a default value of 172.31.254.254, which you may override here. # # Syntax: # client_ip_address ip-addr # client_ip_address 172.31.254.254 # ---------------------------------------------------------------------------------- # # RESPONSE WAIT TIME # # After sending one packet, we wait for responses. The length of time we wait # is the 'response_wait_time'. The program provides a default value of 5000, which you # may override here. The value is measured in milliseconds, and must fit into # an 'int' on your host. (Values larger than an 'int' may be silently misinterpreted.) # Typical values are on the order of a few thousand milliseconds; i.e. several seconds. # # Syntax: # response_wait_time num_milliseconds # response_wait_time 5000 # ---------------------------------------------------------------------------------- # # CYCLE TIME # # For each flavor packet, we send the packet and listen for responses to that packet. # After doing this for all flavor packets, we go to sleep for the "cycle_time", # then repeat the process. The program provides a default value of 300, which you # may override here. The value is measured in seconds, and must fit into an # 'unsigned int' on your host. (Values larger than an 'unsigned int' may be silently # misinterpreted.) Typical valus range from several hundred to several thousand # seconds (i.e. several minutes to several hours). # # Syntax: # cycle_time num_seconds # cycle_wait_time 300 # ---------------------------------------------------------------------------------- # # LEGAL SERVERS' IP SOURCE ADDRESSES # # After sending one packet, we wait for responses. Responses from legal BootP or DHCP # servers are ignored; presumably you aren't interesting in discovering them. # Specify a legal server's IP source address with the 'legal_server' statement. # The value you specify is compared to the IPsrc field in each response's IP header. # # If you have multiple legal servers, specify each in a separate statement. # If your BootP Relay Agents overwrite the server's IP address in the IPsrc field # with their own IP addresses, you will need to list the IP addresses of the # BootP Relay Agents. # # Alternatively, do not specify any legal_server statements at all, so *no* responses # will be considered legal. # (This is different from the way legal_server_ethersrc statements are handled.) # # If both legal_server and legal_server_ethersrc statements appear, then a response # must have both a valid IP source and a valid ethernet source to be considered legal. # # Syntax: # legal_server ip-addr # legal_server 192.168.1.2 # legal_server 192.168.3.4 # ---------------------------------------------------------------------------------- # # LEGAL SERVERS' ETHERNET SOURCE ADDRESSES # # Specify a legal server's Ethernet source address with the 'legal_server_ethersrc' statement. # The value you specify is compared to the ethernet_src field in each response's IP header. # # If you have multiple legal ethernet sources, specify each in a separate statement. # Each router on the path from the DHCP server to the DHCP client will overwrite # the ethernet_src field. So also list the ethernet_src value(s) for the last hop router(s). # The BootP Relay Agent on the path from the DHCP server to the DHCP client will overwrite # the ethernet_src field. So also list the ethernet_src value(s) for the BootP Relay Agent. # (This is often co-resident in the last-hop IP router, so you may have already taken care # of this when you listed the last-hop router(s). # # Alternatively, do not specify any legal_server_ethersrc statements at all. # If none are specified, then all ethernet_src values are considered legal. # (This is different from the way legal_server statements are handled.) # # If both legal_server and legal_server_ethersrc statements appear, then a response # must have both a valid IP source and a valid ethernet source to be considered legal. # # Syntax: # legal_server_ethersrc enet-addr # legal_server_ethersrc 0:2:4:ab:cd:ef # legal_server_ethersrc 0:17:30:1:0A:3 # ---------------------------------------------------------------------------------- # # ALERT PROGRAM NAME # # In addition to logging a response received from an unexpected server, we will optionally # call a user-specified 'alert program' if one is specified here. To use this feature, # specify the absolute pathname of a program we should execute for each unexpected response. # Either specify it using the older 'alert_program_name' statement, or (preferrably) using # the newer 'alert_program_name2' statement. (The newer statement is preferrable because # it calls the alert program with a more extensible syntax.) You may not specify # both alert_program_name and alert_program_name2. # # Old style alert program: # # Syntax: # alert_program_name /absolute/path/name # # The program specified via 'alert_program_name' will be called as follows: # /absolute/path/name name_of_calling_program name_of_interface_on_which_the_response_was_received IP_source_of_the_response ether_src_of_the_response # # # # Newer style alert program: # # Syntax: # alert_program_name2 /absolute/path/name # # The program specified via 'alert_program_name2' will be called as follows: # /absolute/path/name -p name_of_calling_program -I name_of_interface_on_which_the_response_was_received -i IP_source_of_the_response -m ether_src_of_the_response [-y yiaddr_when_in_lease_networks_of_concern] # The options may appear in any order. # The program must silently ignore any options or arguments it does not recognize, # so as to be forward-compatible with future enhancements to dhcp_probe. # alert_program_name2 /usr/local/etc/dhcp_probe_notify2 # ---------------------------------------------------------------------------------- dhcp-probe-1.3.0/extras/dhcp_probe_notify20000750000175100017510000002276011164405072020605 0ustar metro-gimetro-gi#!/usr/local/bin/perl -w # dhcp_probe_notify2 -p calling_prog_name -I interface_name -i IPaddress -m MACaddress [-y yiaddr] # # An external program called by dhcp_probe upon response of a response from an unexpected BootP/DHCP server. # # Called via specification of 'alert_program_name2' in /etc/dhcp_probe.cf file. # This version obeys the syntax provided by the 'alert_program_name2' statement, # not the syntax provided by the older 'alert_program_name' statement. # # Required options: # -p calling_prog_name the name of the calling program (e.g. 'dhcp_probe') # -I interface_name the name of the interface on which the unexpected response packet arrived (e.g. 'qfe0') # -i IPaddress the IP source address of the unexpected response packet (e.g. '192.168.0.1') # -m MACaddress the Ethernet source address of the unexpected response packet (e.g. '0:1:2:3:4:5') # # Optional options: # -y yiaddr the response packet's non-zero yiaddr value, when it falls within a "Lease Network of Interest" (e.g. '172.16.1.2') # # May send email subject to throttling. # May send page subject to throttling. # # You will need to edit the definitions below. # # Irwin Tillman use Sys::Hostname; use Sys::Syslog qw(:DEFAULT setlogsock); use Time::HiRes qw(gettimeofday); # from CPAN use Getopt::Std; use strict; ############################################################################# # # Definitions you may need to edit my $SYSLOG_FACILITY="daemon"; # name of facility to use if syslogging (e.g. 'daemon') my $SYSLOG_OPT = 'pid,cons'; # comma-separated syslog options to use if syslogging (e.g. 'pid,cons') , ignored if not syslogging use vars qw($VERBOSE); $VERBOSE = 1; # set to true to produce more verbose messages # We may send one piece of mail this way, subject to frequency throttling. # Use this set of definitions for a piece of email that is delivered as regular email (not a page). use vars qw($THROTTLE_MAIL_CMD $THROTTLE_MAIL_TIMEOUT $THROTTLE_MAIL_FROM $THROTTLE_MAIL_RECIPIENT $THROTTLE_MAIL_RECIPIENT_TEST $THROTTLE_MAIL_SUBJECT); $THROTTLE_MAIL_CMD = "/usr/local/etc/mail-throttled"; # set to "" to disable $THROTTLE_MAIL_TIMEOUT = 600; # seconds $THROTTLE_MAIL_FROM = "root"; # e.g. "root" $THROTTLE_MAIL_RECIPIENT = "root someone\@example.org"; # space-separated email addresses, remember to escape '@' characters $THROTTLE_MAIL_SUBJECT = "unexpected BootP/DHCP server"; # We may also send another piece of email this way, subject to frequency throttling. # Use this set of definitions for a piece of email that is delivered to a pager (not as regular email). use vars qw($THROTTLE_PAGE_CMD $THROTTLE_PAGE_TIMEOUT $THROTTLE_PAGE_RECIPIENT); $THROTTLE_PAGE_CMD = "/usr/local/etc/mail-throttled"; # set to "" to disable $THROTTLE_PAGE_TIMEOUT = 600; # seconds $THROTTLE_PAGE_RECIPIENT = "rootpager someones-pager\@example.org"; # space-separated email addresses, remember to escape '@' characters # End of definitions you may need to edit # ############################################################################# (my $prog = $0) =~ s/.*\///; # init our use of syslog # setlogsock('unix'); # talk to syslog with UNIX domain socket, not INET domain. XXX causes failure in Solaris 7 openlog($prog, $SYSLOG_OPT, $SYSLOG_FACILITY); ############################################################################# # # Parse options and arguments # We must use getopt() instead of getopts() to avoid throwing an error # if we are passed an unrecognized option. # We must silently ignore unrecognized options to be forward compatible with enhancements to dhcp_probe. use vars qw($opt_i $opt_I $opt_m $opt_p $opt_y); # &getopt('p:i:I:m:y:'); &getopt('piImy'); # Required options my $calling_program = $opt_p; my $ifname = $opt_I; my $ip_src = $opt_i; my $ether_src = $opt_m; # # Optional options my $yiaddr = $opt_y || ""; # Enforce presence of required options unless ($calling_program) { my_message('LOG_ERR', "${prog}: missing -p calling_program option"); exit 100; } unless ($ifname) { my_message('LOG_ERR', "${prog}: missing -I interface_name option"); exit 101; } unless ($ip_src) { my_message('LOG_ERR', "${prog}: missing -i ip_src_address option"); exit 102; } unless ($ether_src) { my_message('LOG_ERR', "${prog}: missing -m ether_src_address option"); exit 103; } # Done parsing options and arguments # ############################################################################# # Miscellaneous Initialization my $hostname = hostname(); my ($seconds, $microseconds) = gettimeofday; # from Time::HiRes on CPAN my $timestamp = scalar(localtime($seconds)); $timestamp =~ s/(\d\d:\d\d:\d\d)/$1.$microseconds/; # glue microsends to end of seconds # When we pass a key to THROTTLE_MAIL_CMD, we want the key to also include an indication # of whether the yiaddr option was specified. (If we didn't include such an indication, # the following could happen: The first response we detect from a rogue server doesn't # distribute an "address of concern", so the yiaddr option wasn't specified. We alert # based on that. The next response we detect from a rogue server does distribute an # "address of concern", so the yiaddr is specified. Our alert gets throttled since # the first alert we sent was "recent". But this means the administrator doesn't get # notified that the rogue distributed an "address of interest". So we need to # include the state of yiaddr option in the key we pass to THROTTLE_MAIL_CMD, # to ensure the second response isn't throttled using the same key as the first response.) # # We can't just use the value of yiaddr itself as the string to incorporate into the key, # as that would result in a unqiue key for each distributed IP address. Instead, we # will use the state of yiaddr (set or unset). # # Note this means that when a rogue DHCP server is distributing IP addresses that fall into "Networks of Concern", # we will very likely send more than one notification for it within each throttle period. # That's because while some of the responses from the rogue will have a yiaddr within a "Networks of Concern", # others (for example, DHCPNAK responses) will not. This is unfortunate, but is better than the # alternative approach (of not taking into account the yiaddr state in the key), since that will # sometimes cause you to not be alerted at all to the "yiaddr falls into a Network of Concern" situation. # # Create a string based on the state of yiaddr, for later incorporation into the key. my $yiaddr_option_state = $yiaddr ? "yiaddr=set" : "yiaddr=unset"; ############################################################################# if ($THROTTLE_MAIL_CMD) { # This command suppresses the message if it's sent a message to 'key' within 'throttle_seconds' # I use the calling program's name and the offender's hardware address as the key. my $subject_yiaddr_addendum = ""; $subject_yiaddr_addendum = ", YIADDR=$yiaddr" if $yiaddr; unless (open(THROTTLE_MAIL, "| $THROTTLE_MAIL_CMD -l -k ${calling_program}_mail_${ether_src}_$yiaddr_option_state -t $THROTTLE_MAIL_TIMEOUT -f \"$THROTTLE_MAIL_FROM\" -r \"$THROTTLE_MAIL_RECIPIENT\" -s\"$THROTTLE_MAIL_SUBJECT (MAC=${ether_src}, IP=${ip_src}${subject_yiaddr_addendum})\"")) { my_message('LOG_ERR', "${prog}: failure trying to send throttled email: can't execute '${THROTTLE_MAIL_CMD}': open(): $!"); exit 20; } print THROTTLE_MAIL $timestamp, "\n", "\n", "$calling_program detected an unexpected BootP/DHCP server.\n", "$hostname interface=${ifname}, IP source=${ip_src}, Ethernet source=${ether_src}\n"; print THROTTLE_MAIL "\nThis means there *is* a rogue BootP/DHCP server operating.\n" if $VERBOSE; if ($yiaddr) { print THROTTLE_MAIL "The server distributed IP address $yiaddr, which falls into a network of special concern.\n"; } unless (close(THROTTLE_MAIL)) { my_message('LOG_ERR', "${prog}: failure trying to send throttled email: error executing '${THROTTLE_MAIL_CMD}': close(): " . ($! ? "syserr closing pipe: $!" : "wait status $? from pipe" ) . "\n" ); exit 21; } } if ($THROTTLE_PAGE_CMD) { # This command suppresses the message if it's sent a message to 'key' within 'throttle_seconds' # I use the calling program's name and the offender's hardware address as the key. unless (open(THROTTLE_PAGE, "| $THROTTLE_PAGE_CMD -l -k ${calling_program}_page_${ether_src}_$yiaddr_option_state -t $THROTTLE_PAGE_TIMEOUT -r \"$THROTTLE_PAGE_RECIPIENT\"")) { my_message('LOG_ERR', "${prog}: failure trying to send throttled page: can't execute '${THROTTLE_PAGE_CMD}': open(): $!\n"); exit 30; } print THROTTLE_PAGE "rogue DHCP server IP=$ip_src MAC=$ether_src seen via $hostname interface $ifname\n"; print THROTTLE_PAGE "This means there *is* a rogue BootP/DHCP server operating.\n" if $VERBOSE; if ($yiaddr) { print THROTTLE_PAGE "Rogue server distributed yiaddr=$yiaddr, a special concern.\n"; } unless (close(THROTTLE_PAGE)) { my_message('LOG_ERR', "${prog}: failure trying to send throttled page: error executing '${THROTTLE_PAGE_CMD}': close(): " . ($! ? "syserr closing pipe: $!" : "wait status $? from pipe" ) . "\n" ); exit 31; } } exit 0; ############################################################################# sub my_message { # Call with a syslog priority constant and a message string. # We write the message to syslog, using the specified priority. # Your message should not contain a newline. my($priority, $msg) = @_; syslog($priority, $msg); return; } dhcp-probe-1.3.0/extras/dhcp_probe.startup.Solaris90000750000175100017510000001132211164405072022330 0ustar metro-gimetro-gi#!/sbin/sh # # /etc/init.d/dhcp_probe [-v] start|stop # # Start/Stop the dhcp_probe daemon. # (The network and streams should already be built by the time the daemon starts.) # # If the daemon is already executing, don't re-execute it. # To try to minimize the likelihood that the processid stored in the PID file corresponds # to an unrelated process (common with startup scripts), we'll clear the contents of the # PID file when we kill the daemon using this script. And when we find a pid in that file, # we'll both check that a process with that pid exists, and that the commandname for the process # looks like the one we're interested in. # # To customize this for other daemons, you may only need to change the parameters below. # # Reasonable links might be: # /etc/rcS.d/K23dhcp_probe # /etc/rc0.d/K23dhcp_probe # /etc/rc1.d/K23dhcp_probe # /etc/rc2.d/K02dhcp_probe # /etc/rc3.d/S23dhcp_probe PATH=/usr/bin:/bin SERVERROOT=/usr/local/sbin # We run on the ce0 interface INTERFACE=ce0 # Set this to '-Q vlan_id' to send frames with 802.1Q VLAN ID vlan_id, else set to nothing for no 802.1Q tag VLAN= PIDFILE=/var/run/dhcp_probe.$INTERFACE.pid CONFIGFILE=/etc/dhcp_probe.$INTERFACE.cf CAPTUREDIR=/var/local/logs CAPTUREFILENAME=dhcp_probe.$INTERFACE.capture CAPTUREFILE=$CAPTUREDIR/$CAPTUREFILENAME MAX=20 STARTCOMMAND="$SERVERROOT/dhcp_probe -d 1 -c $CONFIGFILE -o $CAPTUREFILE -p $PIDFILE $VLAN $INTERFACE" EXECUTABLE=$SERVERROOT/dhcp_probe # must exist before starting PS_SEARCH="dhcp_probe" # string to look for in process name to decide it it looks reasonable CWD=/tmp PROGNAME="dhcp_probe" # progname to print in echo output # core dumps, etc. in CWD cd $CWD # I do want group systems to be able to read the pcap capture files umask 027 while [ $# -gt 0 ] do case "$1" in '-v') verbose=1 ;; 'start') echo "$0: starting $PROGNAME on interface $INTERFACE ...\c" if [ -f $EXECUTABLE ]; then # If we find the daemon already running, exit. Else fall through to the $STARTCOMMAND if [ -f $PIDFILE ]; then pid=`cat $PIDFILE` if [ -n "$pid" ]; then if kill -0 "$pid" > /dev/null 2>&1 ; then # there is a process with that pid, but is it the right one? /usr/bin/ps -f -p $pid | /usr/bin/tail -1 | /usr/bin/grep $PS_SEARCH > /dev/null 2>&1 if [ $? -eq 0 ] ; then echo "$0: $PIDFILE=$pid processid exists with reasonable name, assuming daemon is already running" exit else # that process is something else, so we can assume ours isn't already running # Clearing our pidfile is just good housekeeping, not required cp /dev/null $PIDFILE fi fi # else no process running with that pid, so we assume it's not already running fi # else pidfile doesn't contain a number, so we assume it's not already running fi # else no pidfile, so we assume it's not already running # Success! It really looks like the daemon isn't already running, so start it ### # This part is dhcp_probe - specific # # Each time it starts, it overwrites the capture file. # So you might want to add code here to rotate the capture file ${CAPTUREDIR}/${CAPTUREFILENAME} here. # #### $STARTCOMMAND echo "done" exit else echo "$0: executable $EXECUTABLE does not exist, cannot start daemon" exit 1 fi ;; 'stop') echo "$0: stopping $PROGNAME...\c" if [ -f $PIDFILE ] ; then pid=`cat $PIDFILE` if [ -n "$pid" ]; then if kill -0 "$pid" > /dev/null 2>&1 ; then # there is a process with that pid, but is it the right one? /usr/bin/ps -f -p $pid | /usr/bin/tail -1 | /usr/bin/grep $PS_SEARCH > /dev/null 2>&1 if [ $? -eq 0 ] ; then # Success! The process has reasonable name, go ahead and kill it kill -TERM $pid cp /dev/null $PIDFILE echo "done" exit else if [ -n "$verbose" ]; then echo "$0: $PIDFILE=$pid processid is for different daemon, assuming ours is not running" fi # Clearing our pidfile is just good housekeeping, not required cp /dev/null $PIDFILE echo "done" exit fi else if [ -n "$verbose" ]; then echo "$0: $PIDFILE=$pid processid does not exist, assuming is not running" fi # Clearing our pidfile is just good housekeeping, not required cp /dev/null $PIDFILE echo "done" exit fi else if [ -n "$verbose" ]; then echo "$0: pidfile $PIDFILE is empty, assuming is not running" fi echo "done" exit fi else if [ -n "$verbose" ]; then echo "$0: pidfile $PIDFILE not found, assuming is not running" fi fi echo "done" ;; *) echo "usage: $0 [-v] {start|stop}" ;; esac shift done dhcp-probe-1.3.0/Makefile.am0000644000175100017510000000127511164405072015631 0ustar metro-gimetro-gi## Process this file with automake to produce Makefile.in SUBDIRS = lib src doc EXTRA_DIST = COPYING.GPL COPYING.LIB INSTALL.dhcp_probe PLATFORMS \ config/config.guess \ config/config.sub \ config/install-sh \ config/missing \ config/mkinstalldirs \ config/depcomp \ m4/ac_check_func_proto.m4 \ m4/ac_check_struct_for.m4 \ m4/ac_unp_check_type.m4 \ m4/ist_require_libnet.m4 \ m4/ist_require_pcap.m4 \ m4/ist_sys_socket_ioctls_use_streams.m4 \ m4/sys_errlist.m4 \ extras/dhcp_probe.cf.sample \ extras/dhcp_probe.FreeBSD.sh \ extras/dhcp_probe.startup.Solaris9 \ extras/dhcp_probe_notify \ extras/dhcp_probe_notify2 \ extras/mail-throttled \ extras/README ACLOCAL_AMFLAGS = -I m4 dhcp-probe-1.3.0/m4/0000755000175100017510000000000011164405072014110 5ustar metro-gimetro-gidhcp-probe-1.3.0/m4/ac_unp_check_type.m40000644000175100017510000001013111164405072020011 0ustar metro-gimetro-gidnl ################################################################## dnl The macro AC_UNP_CHECK_TYPE dnl comes from aclocal.m4 in the sample code associated dnl with "UNIX Network Programming: Volume 1", Second Edition, dnl by W. Richard Stevens. That sample code is available via dnl ftp://ftp.kohala.com/pub/rstevens/unpv12e.tar.gz. dnl dnl Version $Id: ac_unp_check_type.m4,v 1.6 2007/06/19 19:19:08 root Exp $ dnl dnl Usage: dnl AC_UNP_CHECK_TYPE(type, default) dnl Like the standard AC_CHECK_TYPE macro, this checks if the type 'type' dnl is defined in certain system headers, and if not, defines 'type' to dnl be the C builtin type 'default'. dnl dnl You would use this macro instead of the standard AC_CHECK_TYPE dnl because AC_CHECK_TYPE #includes only , , dnl and . dnl Unfortunately, many implementations today hide typedefs in weird dnl locations: Solaris 2.5.1 has uint8_t and uint32_t in . dnl SunOS 4.1.x has int8_t in . dnl So AC_UNP_CHECK_TYPE #includes more headers, then tries to compile dnl a test program that uses the typedef. dnl dnl This macro should be invoked in configure.in after all the header checks dnl (e.g. AC_CHECK_HEADERS) have been performed, since our test program will dnl #include "confdefs.h" (the C macro definitions accumulated by configure so far), dnl then will #include various header files based on some HAVE_foo_H values we expect dnl may appear in "confdefs.h". Of course, to make this work, you should have invoked dnl AC_CHECK_HEADERS in configure.in on all those possible header files. dnl dnl If a type you need to check for might be defined in some *other* header file, you'll dnl need to edit your AC_CHECK_HEADERS invocations in configure.in to add that header dnl file, then edit the macro definition below to #include that header file dnl (based on the appropriate HAVE_foo_H value). dnl AC_DEFUN([AC_UNP_CHECK_TYPE], [AC_MSG_CHECKING(if $1 defined) AC_CACHE_VAL(ac_cv_type_$1, AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[ #include "confdefs.h" /* the header built by configure so far */ #ifdef HAVE_SYS_TYPES_H # include #endif #ifdef HAVE_SYS_SOCKET_H # include #endif #ifdef HAVE_SYS_TIME_H # include #endif #ifdef HAVE_NETINET_IN_H # include #endif #ifdef HAVE_ARPA_INET_H # include #endif #ifdef HAVE_ERRNO_H # include #endif #ifdef HAVE_FCNTL_H # include #endif #ifdef HAVE_NETDB_H # include #endif #ifdef HAVE_SIGNAL_H # include #endif #ifdef HAVE_STDIO_H # include #endif #ifdef HAVE_STDLIB_H # include #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_SYS_STAT_H # include #endif #ifdef HAVE_SYS_UIO_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_SYS_WAIT_H # include #endif #ifdef HAVE_SYS_UN_H # include #endif #ifdef HAVE_SYS_SELECT_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #ifdef HAVE_SYS_IOCTL_H # include #endif #ifdef HAVE_SYS_FILIO_H # include #endif #ifdef HAVE_SYS_SOCKIO_H # include #endif #ifdef HAVE_PTHREAD_H # include #endif ]] [[ $1 foo ; ]] ) ], ac_cv_type_$1=yes , ac_cv_type_$1=no ) ) AC_MSG_RESULT($ac_cv_type_$1) if test $ac_cv_type_$1 = no ; then AC_DEFINE($1, $2, [On systems that lack a typedef for $1, define it as $2.]) fi ]) dhcp-probe-1.3.0/m4/ac_check_struct_for.m40000644000175100017510000000255411164405072020352 0ustar metro-gimetro-gidnl ################################################################## dnl The macro AC_CHECK_STRUCT_FOR is copyrighted by Wes Hardaker dnl , and was obtained from the GNU autoconf macro archive dnl at http://research.cys.de/autoconf-archive/ dnl See the COPYING file for details. dnl dnl @synopsis AC_CHECK_STRUCT_FOR(INCLUDES,STRUCT,MEMBER,DEFINE,[no]) dnl dnl Checks STRUCT for MEMBER and defines DEFINE if found. dnl dnl @version $Id: aclocal.m4,v 1.3 2001/01/17 01:20:29 irwin Exp $ dnl @author Wes Hardaker dnl AC_DEFUN([AC_CHECK_STRUCT_FOR],[ ac_safe_struct=`echo "$2" | sed 'y%./+-%__p_%'` ac_safe_member=`echo "$3" | sed 'y%./+-%__p_%'` ac_safe_all="ac_cv_struct_${ac_safe_struct}_has_${ac_safe_member}" changequote(, )dnl ac_uc_define=STRUCT_`echo "${ac_safe_struct}_HAS_${ac_safe_member}" | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'` changequote([, ])dnl AC_MSG_CHECKING([for $2.$3]) AC_CACHE_VAL($ac_safe_all, [ if test "x$4" = "x"; then defineit="= 0" elif test "x$4" = "xno"; then defineit="" else defineit="$4" fi AC_TRY_COMPILE([ $1 ],[ struct $2 testit; testit.$3 $defineit; ], eval "${ac_safe_all}=yes", eval "${ac_safe_all}=no" ) ]) if eval "test \"x$`echo ${ac_safe_all}`\" = \"xyes\""; then AC_MSG_RESULT(yes) AC_DEFINE_UNQUOTED($ac_uc_define) else AC_MSG_RESULT(no) fi ]) dhcp-probe-1.3.0/m4/ist_sys_socket_ioctls_use_streams.m40000644000175100017510000000412211164405072023405 0ustar metro-gimetro-gidnl ################################################################## dnl The macro IST_SYS_SOCKET_IOCTLS_USE_STREAMS dnl is by Irwin Tillman, and may be distributed under the GNU Public License. dnl See the COPYING file for details. dnl dnl Version $Id: ist_sys_socket_ioctls_use_streams.m4,v 1.4 2008/09/17 17:47:03 root Exp $ dnl dnl Usage: dnl IST_SYS_SOCKET_IOCTLS_USE_STREAMS dnl Defines SYS_SOCKET_IOCTLS_USE_STREAMS if this system requires you to use STREAMS ioctls on sockets dnl instead of SIOCxxx ioctls on sockets. dnl Also sets the cache variable ist_cv_sys_socket_ioctls_use_streams to 'yes' or 'no'. dnl (Side effects: also defines cache variable ac_cv_header_stropts_h. and C preprocessor macro dnl HAVE_STROPTS_H based on whether stropts.h header is present.) dnl dnl Our approach is to guess that if your systems has stropts.h header (STREAMS user options definitions) dnl and is on a short list of known host platforms, that we should use STREAMS ioctls. dnl (Having a list of host platforms here isn't good; we really should try compiling and running a dnl test program instead.) dnl AC_DEFUN([IST_SYS_SOCKET_IOCTLS_USE_STREAMS], [ dnl Check for stropts.h just for the side-effect of setting ac_cv_header_stropts_h. AC_CHECK_HEADERS(stropts.h) dnl We need the $host variable to have been set AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK(if socket ioctls should use STREAMS instead of SIOCxxx, ist_cv_sys_socket_ioctls_use_streams, [ if test "$ac_cv_header_stropts_h" = "yes"; then dnl stropts.h present, check for particular platform flavors case "$host" in *-sni-sysv*) ist_cv_sys_socket_ioctls_use_streams=yes ;; *-*-ptx*) ist_cv_sys_socket_ioctls_use_streams=yes ;; *) ist_cv_sys_socket_ioctls_use_streams=no ;; esac else dnl stropts.h missing, assume we don't need to use stream ioctls ist_cv_sys_socket_ioctls_use_streams=no fi ]) if test "$ist_cv_sys_socket_ioctls_use_streams" = "yes"; then AC_DEFINE(SYS_SOCKET_IOCTLS_USE_STREAMS, [], [Define if STREAMS ioctls should be used on socket descriptors, instead of SIOCxxx ioctls]) fi ]) dhcp-probe-1.3.0/m4/ist_require_pcap.m40000644000175100017510000000742211164405072017715 0ustar metro-gimetro-gidnl ################################################################## dnl The macro IST_REQUIRE_PCAP dnl is by Irwin Tillman, and may be distributed under the GNU Public License. dnl See the COPYING file for details. dnl dnl Version $Id: ist_require_pcap.m4,v 1.2 2004/11/04 20:47:40 root Exp $ dnl dnl Usage: dnl IST_REQUIRE_PCAP dnl Require that pcap include and lib are present. dnl User may specify --with-pcap=DIR to specify parent of the include/ and lib/ directories that contain dnl the pcap header and lib, respectively. dnl User may specify -with-pcap-include=DIR to specify directory containing the pcap header file. dnl User may specify -with-pcap-lib=DIR to specify directory containing the pcap lib file. dnl dnl If library or include is missing, we bomb out. dnl If both are found, we adjust CPPFLAGS, LDFLAGS, and LIBS to make the PCAP includes and library available. dnl AC_DEFUN([IST_REQUIRE_PCAP],[ dnl set IST_REQUIRE_PCAP_HOME to the default prefix we'll use to find include and lib IST_REQUIRE_PCAP_HOME=/usr/local dnl change IST_REQUIRE_PCAP_HOME to user-specified value AC_ARG_WITH([pcap], [ --with-pcap=DIR parent of the include and lib dirs containing pcap header and lib (defaults to /usr/local)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-pcap.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-pcap=no or --without-pcap is not permitted. This package cannot be compiled without the pcap include and library.]) else IST_REQUIRE_PCAP_HOME="$withval" fi ] dnl option not mentioned at all by user, leave it set to default ) AC_ARG_WITH([pcap-include], [ --with-pcap-include=DIR directory containing pcap header (defaults to /usr/local/include)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-pcap-include.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-pcap-include=no or --without-pcap-include is not permitted. This package cannot be compiled without the pcap header.]) else IST_REQUIRE_PCAP_INCLUDE="$withval" fi ], dnl option not mentioned at all by user, use our default [ IST_REQUIRE_PCAP_INCLUDE="$IST_REQUIRE_PCAP_HOME/include" ] ) AC_ARG_WITH([pcap-lib], [ --with-pcap-lib=DIR directory containing pcap library (defaults to /usr/local/lib)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-pcap-lib.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-pcap-lib=no or --without-pcap-lib is not permitted. This package cannot be compiled without the pcap library.]) else IST_REQUIRE_PCAP_LIB="$withval" fi ], dnl option not mentioned at all by user, use our default [ IST_REQUIRE_PCAP_LIB="$IST_REQUIRE_PCAP_HOME/lib" ] ) dnl Save existing values in case we must back out. IST_REQUIRE_PCAP_OLD_CPPFLAGS=$CPPFLAGS IST_REQUIRE_PCAP_OLD_LDFLAGS=$LDFLAGS dnl IST_REQUIRE_PCAP_OLD_LIBS=$LIBS dnl Modify values to reflect pcap CPPFLAGS="$CPPFLAGS -I${IST_REQUIRE_PCAP_INCLUDE}" LDFLAGS="$LDFLAGS -L${IST_REQUIRE_PCAP_LIB}" dnl we don't add -lpcap to LIBS since ac_check_lib does that later dnl LIBS="$LIBS -lpcap" AC_CHECK_HEADERS(pcap.h, , AC_MSG_WARN([can't build without pcap.h (the libpcap header)]) IST_REQUIRE_PCAP_RESULT=failed ) AC_CHECK_LIB(pcap, pcap_lookupdev, , AC_MSG_WARN([can't build without libpcap]) IST_REQUIRE_PCAP_RESULT=failed ) if test x"$IST_REQUIRE_PCAP_RESULT" = "xfailed"; then dnl revert values and bomb out CPPFLAGS=$IST_REQUIRE_PCAP_OLD_CPPFLAGS LDFLAGS=$IST_REQUIRE_PCAP_OLD_LDFLAGS dnl LIBS=$IST_REQUIRE_PCAP_OLD_LIBS AC_MSG_ERROR([Specify where to find pcap using --with-pcap=DIR (or --with-pcap-include, --with-pcap-lib).]) fi ]) dhcp-probe-1.3.0/m4/sys_errlist.m40000644000175100017510000001145011164405072016735 0ustar metro-gimetro-gidnl ################################################################## dnl The macro AC_SYS_NERR dnl is based on code from configure.in distributed with LPRng-2.0.8. dnl See the COPYING file for details. dnl dnl Version $Id: sys_errlist.m4,v 1.3 2004/08/24 15:13:55 root Exp $ dnl dnl Usage: dnl AC_SYS_NERR dnl Check if sys_nerr exists. dnl Tries to link a program that mentions sys_nerr. dnl If it exists, defines C preprocessor macro HAVE_SYS_NERR. dnl Sets the cache variable ac_cv_var_sys_nerr to 'yes' or 'no'. dnl AC_DEFUN([AC_SYS_NERR], [AC_MSG_CHECKING(for sys_nerr) AC_CACHE_VAL(ac_cv_var_sys_nerr, [AC_TRY_LINK(,[extern int sys_nerr; return (sys_nerr);], ac_cv_var_sys_nerr=yes, ac_cv_var_sys_nerr=no) ]) AC_MSG_RESULT($ac_cv_var_sys_nerr) if test $ac_cv_var_sys_nerr = yes; then AC_DEFINE(HAVE_SYS_NERR, [], [Define the following if sys_nerr exists]) fi; ]) dnl ################################################################## dnl The macro AC_DECL_SYS_NERR dnl is based on code from configure.in distributed with LPRng-2.0.8. dnl See the COPYING file for details. dnl dnl Usage: dnl AC_DECL_SYS_NERR dnl Check if sys_nerr is declared in one of the usual system headers. dnl Tries to compile a program that uses sys_nerr. dnl If the declaration exists, defines C preprocessor macro HAVE_SYS_NERR_DECL. dnl Sets the cache variable ac_cv_decl_sys_nerr to 'yes' or 'no'. dnl dnl This macro should be invoked in configure.in after all the header checks dnl (e.g. AC_CHECK_HEADERS) have been performed, since our test program will dnl #include "confdefs.h" (the C macro definitions accumulated by configure so far), dnl then will #include various header files based on HAVE_STDLIB_H and HAVE_UNISTD_H we expect dnl may appear in "confdefs.h". Of course, to make this work, you should have invoked dnl AC_CHECK_HEADERS(stdlib.h unistd.h) in configure.in. dnl AC_DEFUN([AC_DECL_SYS_NERR], [AC_MSG_CHECKING(for sys_nerr declaration) AC_CACHE_VAL(ac_cv_decl_sys_nerr, [AC_TRY_COMPILE([ #include "confdefs.h" /* the header built by configure so far */ #include #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_UNISTD_H #include #endif], [printf("%d",sys_nerr);], ac_cv_decl_sys_nerr=yes, ac_cv_decl_sys_nerr=no) ]) AC_MSG_RESULT($ac_cv_decl_sys_nerr) if test $ac_cv_decl_sys_nerr = yes; then AC_DEFINE(HAVE_SYS_NERR_DECL, [], [Define the following if sys_nerr is declared]) fi ]) dnl ################################################################## dnl The macro AC_SYS_ERRLIST dnl is based on code from configure.in distributed with LPRng-2.0.8. dnl See the COPYING file for details. dnl dnl Usage: dnl AC_SYS_ERRLIST dnl Check if sys_errlist exists. dnl Tries to link a program that mentions sys_errlist. dnl If it exists, defines C preprocessor macro HAVE_SYS_ERRLIST. dnl Sets the cache variable ac_cv_var_sys_errlist to 'yes' or 'no'. dnl AC_DEFUN([AC_SYS_ERRLIST], [AC_MSG_CHECKING(for sys_errlist) AC_CACHE_VAL(ac_cv_var_sys_errlist, [AC_TRY_LINK(,[extern char *sys_errlist[]; sys_errlist[0];], ac_cv_var_sys_errlist=yes, ac_cv_var_sys_errlist=no) ]) AC_MSG_RESULT($ac_cv_var_sys_errlist) if test $ac_cv_var_sys_errlist = yes; then AC_DEFINE(HAVE_SYS_ERRLIST, [], [Define the following if sys_errlist exists]) fi ]) dnl ################################################################## dnl The macro AC_DECL_SYS_ERRLIST dnl is based on code from configure.in distributed with LPRng-2.0.8. dnl See the COPYING file for details. dnl dnl Usage: dnl AC_DECL_SYS_ERRLIST dnl Check if sys_errlist is declared in one of the usual system headers. dnl Tries to compile a program that uses sys_errlist. dnl If the declaration exists, defines C preprocessor macro HAVE_SYS_ERRLIST_DECL. dnl Sets the cache variable ac_cv_decl_sys_errlist to 'yes' or 'no'. dnl dnl This macro should be invoked in configure.in after all the header checks dnl (e.g. AC_CHECK_HEADERS) have been performed, since our test program will dnl #include "confdefs.h" (the C macro definitions accumulated by configure so far), dnl then will #include various header files based on HAVE_STDLIB_H and HAVE_UNISTD_H we expect dnl may appear in "confdefs.h". Of course, to make this work, you should have invoked dnl AC_CHECK_HEADERS(stdlib.h unistd.h) in configure.in. dnl AC_DEFUN([AC_DECL_SYS_ERRLIST], [AC_MSG_CHECKING(for sys_errlist declaration) AC_CACHE_VAL(ac_cv_decl_sys_errlist, [AC_TRY_COMPILE([ #include "confdefs.h" /* the header built by configure so far */ #include #include #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_UNISTD_H #include #endif], [printf("%s",sys_errlist[0]);], ac_cv_decl_sys_errlist=yes, ac_cv_decl_sys_errlist=no) ]) AC_MSG_RESULT($ac_cv_decl_sys_errlist) if test $ac_cv_decl_sys_errlist = yes; then AC_DEFINE(HAVE_SYS_ERRLIST_DECL, [], [Define the following if sys_nerr is declared]) fi ]) dhcp-probe-1.3.0/m4/ist_require_libnet.m40000644000175100017510000000722211164405072020245 0ustar metro-gimetro-gidnl ################################################################## dnl The macro IST_REQUIRE_LIBNET dnl is by Irwin Tillman, and may be distributed under the GNU Public License. dnl See the COPYING file for details. dnl dnl Version $Id: ist_require_libnet.m4,v 1.3 2004/11/04 20:46:51 root Exp $ dnl dnl Usage: dnl IST_REQUIRE_LIBNET dnl Require that libnet header and lib (version 1.1 or later) are present. dnl User may specify --with-libnet=DIR to specify parent of the include/ and lib/ directories that contain dnl the libnet header and lib, respectively. dnl User may specify -with-libnet-include=DIR to specify directory containing the libnet header file. dnl User may specify -with-libnet-lib=DIR to specify directory containing the libnet lib file. dnl dnl If header or library is missing, we bomb out. dnl AC_DEFUN([IST_REQUIRE_LIBNET],[ dnl set IST_REQUIRE_LIBNET_HOME to the default prefix we'll use to find include and lib IST_REQUIRE_LIBNET_HOME=/usr/local dnl change IST_REQUIRE_LIBNET_HOME to user-specified value AC_ARG_WITH([libnet], [ --with-libnet=DIR parent of the include and lib dirs containing libnet header and lib (defaults to /usr/local)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-libnet.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-libnet=no or --without-libnet is not permitted. This package cannot be compiled without the libnet header and library.]) else IST_REQUIRE_LIBNET_HOME="$withval" fi ] dnl option not mentioned at all by user, leave it set to default ) AC_ARG_WITH([libnet-include], [ --with-libnet-include=DIR directory containing libnet header (defaults to /usr/local/include)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-libnet-include.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-libnet-include=no or --without-libnet-include is not permitted. This package cannot be compiled without the libnet header.]) else IST_REQUIRE_LIBNET_INCLUDE="$withval" fi ], dnl option not mentioned at all by user, use our default [ IST_REQUIRE_LIBNET_INCLUDE="$IST_REQUIRE_LIBNET_HOME/include" ] ) AC_ARG_WITH([libnet-lib], [ --with-libnet-lib=DIR directory containing libnet library (defaults to /usr/local/lib)], [if test x"$withval" = "x" -o x"$withval" = "xyes"; then AC_MSG_ERROR([Missing directory for --with-libnet-lib.]) elif test x"$withval" = "xno"; then AC_MSG_ERROR([ Specifying --with-libnet-lib=no or --without-libnet-lib is not permitted. This package cannot be compiled without the libnet library.]) else IST_REQUIRE_LIBNET_LIB="$withval" fi ], dnl option not mentioned at all by user, use our default [ IST_REQUIRE_LIBNET_LIB="$IST_REQUIRE_LIBNET_HOME/lib" ] ) dnl Modify CPPFLAGS and LDFLAGS to add dirs needed to find libnet header and library. CPPFLAGS="$CPPFLAGS -I${IST_REQUIRE_LIBNET_INCLUDE}" LDFLAGS="$LDFLAGS -L${IST_REQUIRE_LIBNET_LIB}" dnl we don't add -lnet to LIBS here, since ac_check_lib does that later dnl LIBS="$LIBS -lnet" dnl Test for the libnet header. AC_CHECK_HEADERS(libnet.h, , AC_MSG_WARN([can't build without libnet.h (the libnet header)]) IST_REQUIRE_LIBNET_RESULT=failed ) dnl Test for the libnet library. AC_CHECK_LIB(net, libnet_build_ipv4, , AC_MSG_WARN([can't build without libnet 1.1 or later]) IST_REQUIRE_LIBNET_RESULT=failed ) if test x"$IST_REQUIRE_LIBNET_RESULT" = "xfailed"; then dnl revert values and bomb out AC_MSG_ERROR([Specify where to find libnet 1.1 or later using --with-libnet=DIR (or --with-libnet-include, --with-libnet-lib).]) fi ]) dhcp-probe-1.3.0/m4/ac_check_func_proto.m40000644000175100017510000000276011164405072020335 0ustar metro-gimetro-gidnl ################################################################## dnl The macro AC_CHECK_FUNC_PROTO dnl comes from aclocal.m4 in the sample code associated dnl with "UNIX Network Programming: Volume 1", Second Edition, dnl by W. Richard Stevens. 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" >&6; } if test "${ac_cv_have_decl_ether_ntoa+set}" = set; then $as_echo_n "(cached) " >&6 else cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ /* On Redhat 9, they are declared in netinet/ether.h. */ #if HAVE_NETINET_ETHER_H #include #endif /* In Solaris 10 (but not earlier), they are declared in sys/ethernet.h. But at build time, it's not a good idea to include sys/ethernet.h directly; while that would work in Solaris 10, it would break in Solaris 9 if we ever find we need to include netinet/if_ether; in Solaris 9 you must not include BOTH netinet/if_ether.h and sys/ethernet.h, since there are some definitions duplicated in the two files. Since at build time we may indeed include netinet/if_ether.h, we cannot directly include sys/ethernet.h at build time. 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And in Solaris 10, we will find the declarations for ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(). */ #if HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_TYPES_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ # include #endif #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif #include #endif int main () { #ifndef ether_ntoa (void) ether_ntoa; #endif ; return 0; } _ACEOF rm -f conftest.$ac_objext if { (ac_try="$ac_compile" case "(($ac_try" in *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; *) ac_try_echo=$ac_try;; esac eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" $as_echo "$ac_try_echo") >&5 (eval "$ac_compile") 2>conftest.er1 ac_status=$? grep -v '^ *+' conftest.er1 >conftest.err rm -f conftest.er1 cat conftest.err >&5 $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && { test -z "$ac_c_werror_flag" || test ! -s conftest.err } && test -s conftest.$ac_objext; then ac_cv_have_decl_ether_ntoa=yes else $as_echo "$as_me: failed program was:" >&5 sed 's/^/| /' conftest.$ac_ext >&5 ac_cv_have_decl_ether_ntoa=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi { $as_echo "$as_me:$LINENO: result: $ac_cv_have_decl_ether_ntoa" >&5 $as_echo "$ac_cv_have_decl_ether_ntoa" >&6; } if test "x$ac_cv_have_decl_ether_ntoa" = x""yes; then cat >>confdefs.h <<_ACEOF #define HAVE_DECL_ETHER_NTOA 1 _ACEOF else cat >>confdefs.h <<_ACEOF #define HAVE_DECL_ETHER_NTOA 0 _ACEOF fi { $as_echo "$as_me:$LINENO: checking whether ether_ntohost is declared" >&5 $as_echo_n "checking whether ether_ntohost is declared... " >&6; } if test "${ac_cv_have_decl_ether_ntohost+set}" = set; then $as_echo_n "(cached) " >&6 else cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ /* On Redhat 9, they are declared in netinet/ether.h. */ #if HAVE_NETINET_ETHER_H #include #endif /* In Solaris 10 (but not earlier), they are declared in sys/ethernet.h. But at build time, it's not a good idea to include sys/ethernet.h directly; while that would work in Solaris 10, it would break in Solaris 9 if we ever find we need to include netinet/if_ether; in Solaris 9 you must not include BOTH netinet/if_ether.h and sys/ethernet.h, since there are some definitions duplicated in the two files. Since at build time we may indeed include netinet/if_ether.h, we cannot directly include sys/ethernet.h at build time. 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And in Solaris 10, we will find the declarations for ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(). */ #if HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_TYPES_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ # include #endif #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif #include #endif int main () { #ifndef ether_ntohost (void) ether_ntohost; #endif ; return 0; } _ACEOF rm -f conftest.$ac_objext if { (ac_try="$ac_compile" case "(($ac_try" in *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; *) ac_try_echo=$ac_try;; esac eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" $as_echo "$ac_try_echo") >&5 (eval "$ac_compile") 2>conftest.er1 ac_status=$? grep -v '^ *+' conftest.er1 >conftest.err rm -f conftest.er1 cat conftest.err >&5 $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && { test -z "$ac_c_werror_flag" || test ! -s conftest.err } && test -s conftest.$ac_objext; then ac_cv_have_decl_ether_ntohost=yes else $as_echo "$as_me: failed program was:" >&5 sed 's/^/| /' conftest.$ac_ext >&5 ac_cv_have_decl_ether_ntohost=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi { $as_echo "$as_me:$LINENO: result: $ac_cv_have_decl_ether_ntohost" >&5 $as_echo "$ac_cv_have_decl_ether_ntohost" >&6; } if test "x$ac_cv_have_decl_ether_ntohost" = x""yes; then cat >>confdefs.h <<_ACEOF #define HAVE_DECL_ETHER_NTOHOST 1 _ACEOF else cat >>confdefs.h <<_ACEOF #define HAVE_DECL_ETHER_NTOHOST 0 _ACEOF fi { $as_echo "$as_me:$LINENO: checking whether ether_hostton is declared" >&5 $as_echo_n "checking whether ether_hostton is declared... " >&6; } if test "${ac_cv_have_decl_ether_hostton+set}" = set; then $as_echo_n "(cached) " >&6 else cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ /* On Redhat 9, they are declared in netinet/ether.h. */ #if HAVE_NETINET_ETHER_H #include #endif /* In Solaris 10 (but not earlier), they are declared in sys/ethernet.h. But at build time, it's not a good idea to include sys/ethernet.h directly; while that would work in Solaris 10, it would break in Solaris 9 if we ever find we need to include netinet/if_ether; in Solaris 9 you must not include BOTH netinet/if_ether.h and sys/ethernet.h, since there are some definitions duplicated in the two files. Since at build time we may indeed include netinet/if_ether.h, we cannot directly include sys/ethernet.h at build time. 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AC_HEADER_STDC AC_CHECK_HEADERS(ctype.h errno.h fcntl.h netdb.h pthread.h signal.h stdio.h stdlib.h) AC_CHECK_HEADERS(string.h strings.h stropts.h syslog.h time.h unistd.h) AC_CHECK_HEADERS(arpa/inet.h) AC_CHECK_HEADERS(sys/socket.h) AC_CHECK_HEADERS(stdint.h inttypes.h) AC_CHECK_HEADERS([net/if.h], [], [], [/* In Solaris, before using net/if.h you need sys/socket.h. */ #if HAVE_SYS_SOCKET_H # include #endif ]) AC_CHECK_HEADERS([net/if_arp.h], [], [], [#if HAVE_SYS_SOCKET_H # include #endif ]) AC_CHECK_HEADERS(netinet/in.h) AC_CHECK_HEADERS([netinet/if_ether.h], [], [], [/* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif ]) AC_CHECK_HEADERS(netinet/in_systm.h) AC_CHECK_HEADERS([netinet/ip.h], [], [], [#if HAVE_NETINET_IN_H # include #endif ]) AC_CHECK_HEADERS([netinet/udp.h], [], [], [#if HAVE_NETINET_IN_H # include #endif ]) AC_CHECK_HEADERS(sys/file.h sys/filio.h sys/ioctl.h sys/resource.h sys/select.h) AC_CHECK_HEADERS(sys/sockio.h sys/stat.h sys/time.h sys/types.h sys/uio.h) AC_CHECK_HEADERS(sys/un.h sys/wait.h) dnl netinet/ether.h is supplied by GNU C Library AC_CHECK_HEADERS(netinet/ether.h) AC_CHECK_HEADERS(net/if_dl.h) dnl ifaddrs.h is supplied by many *BSDs AC_CHECK_HEADERS(ifaddrs.h) dnl ########################################################################## dnl Checks for types. AC_TYPE_INT8_T AC_TYPE_INT16_T AC_TYPE_INT32_T AC_TYPE_INT64_T AC_TYPE_UINT8_T AC_TYPE_UINT16_T AC_TYPE_UINT32_T AC_TYPE_UINT64_T dnl ########################################################################## dnl Checks for other required or optional packages. dnl We require the libpcap header and library. IST_REQUIRE_PCAP dnl We require the libnet header and library. IST_REQUIRE_LIBNET dnl We require a declaration for the libnet_cq_end_loop() function. dnl It should be declared as a result of including libnet.h if the user has added it as per INSTALL.dhcp_probe. AC_CHECK_DECL(libnet_cq_end_loop, [], AC_MSG_ERROR([Didn't find a declaration for the libnet_cq_end_loop() function. See INSTALL.dhcp_probe.]), [[#include ]]) dnl We require a definition for the libnet_cq_end_loop() function. dnl It should be defined in the libnet library if the user has added it as per INSTALL.dhcp_probe. AC_CHECK_FUNC(libnet_cq_end_loop, [], AC_MSG_ERROR([Didn't find the libnet_cq_end_loop() function. 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AC_CHECK_MEMBER( [struct ether_addr.ether_addr_octet], [ AC_DEFINE([STRUCT_ETHER_ADDR_HAS_ETHER_ADDR_OCTET], [1], [Define if struct ether_addr{} has an ether_addr_octet member]) ], [], [ #if HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_TYPES_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ # include #endif #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif #include #endif ] ) dnl We use the AC_CHECK_MEMBER macro here, to determine if dnl struct ether_addr{} has an octet member. dnl In Linux and FreeBSD, we include netinet/if_ether.h get get the declaration of struct ether_addr. AC_CHECK_MEMBER( [struct ether_addr.octet], [ AC_DEFINE([STRUCT_ETHER_ADDR_HAS_OCTET], [1], [Define if struct ether_addr{} has an octet member]) ], [], [ #if HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_TYPES_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ # include #endif #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif #include #endif ] ) dnl We use these macros to determine if sys_nerr exists and is declared, dnl and to determine if sys_errlist exists and is declared. AC_SYS_NERR AC_DECL_SYS_NERR AC_SYS_ERRLIST AC_DECL_SYS_ERRLIST dnl ################################################################## dnl Checks for function prototypes. dnl The AC_CHECK_FUNC_PROTO macro checks for function prototypes in specific headers. AH_TEMPLATE([HAVE_INET_ATON_PROTO], [Define the following if the inet_aton() function prototype is in ]) AC_CHECK_FUNC_PROTO(inet_aton, arpa/inet.h) AH_TEMPLATE([HAVE_STRERROR_PROTO], [Define the following if strerror() is declared]) AC_CHECK_FUNC_PROTO(strerror, string.h) dnl While ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton() should always be available, dnl some systems lack prototypes for them. AC_CHECK_DECLS([ether_aton, ether_ntoa, ether_ntohost, ether_hostton], , , [[ /* On Redhat 9, they are declared in netinet/ether.h. */ #if HAVE_NETINET_ETHER_H #include #endif /* In Solaris 10 (but not earlier), they are declared in sys/ethernet.h. But at build time, it's not a good idea to include sys/ethernet.h directly; while that would work in Solaris 10, it would break in Solaris 9 if we ever find we need to include netinet/if_ether; in Solaris 9 you must not include BOTH netinet/if_ether.h and sys/ethernet.h, since there are some definitions duplicated in the two files. Since at build time we may indeed include netinet/if_ether.h, we cannot directly include sys/ethernet.h at build time. Since we know we will not directly include sys/ethernet.h at build time, it would be unwise at configure time to make decisions based on a test that involved directly including sys/ethernet.h. Fortunately, on Solaris 10, netinet/if_ether.h includes sys/ethernet.h for you, ultimately getting the ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton() declarations we want. So our approach is to include netinet/if_ether.h. On Solaris 9, this will not cause a problem; we won't find declarations for ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(), but those four declarations aren't available in Solaris 9 anyway. And in Solaris 10, we will find the declarations for ether_aton(), ether_ntoa(), ether_ntohost(), ether_hostton(). */ #if HAVE_NETINET_IF_ETHER_H /* In Solaris, before using netinet/if_ether.h you need sys/socket.h and net/if.h. */ #if HAVE_SYS_TYPES_H /* On Solaris, you must include sys/types.h before sys/socket.h. */ # include #endif #if HAVE_SYS_SOCKET_H # include #endif #if HAVE_NET_IF_H # include #endif #include #endif]]) dnl ################################################################## dnl Checks for library functions. AC_CHECK_FUNCS(bcmp bcopy bzero) AC_CHECK_FUNCS(vsnprintf) AC_CHECK_FUNCS(sysconf getrlimit) AC_CHECK_FUNCS(getifaddrs) dnl ################################################################## dnl Check for oft-missing library functions for which we provide a fallback implementation. AC_REPLACE_FUNCS(strerror) AC_REPLACE_FUNCS(inet_aton) dnl Include a library functions that we expect to be missing, to ensure that when our dnl library of replacement functions is built, it contains at least one member. dnl (Empty libraries are not portable.) AC_REPLACE_FUNCS(my_null_proc) dnl ################################################################## dnl miscellaneous platform-specific dnl Check if socket ioctls must use STREAM ioctls instead of SIOCxxx ioctls. IST_SYS_SOCKET_IOCTLS_USE_STREAMS dnl ################################################################## AC_OUTPUT(Makefile lib/Makefile src/Makefile doc/Makefile, [date > stamp-h]) dhcp-probe-1.3.0/config/0000755000175100017510000000000011164405072015035 5ustar metro-gimetro-gidhcp-probe-1.3.0/config/config.sub0000755000175100017510000010115311164405072017021 0ustar metro-gimetro-gi#! /bin/sh # Configuration validation subroutine script. # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, # 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 # Free Software Foundation, Inc. timestamp='2008-01-16' # This file is (in principle) common to ALL GNU software. # The presence of a machine in this file suggests that SOME GNU software # can handle that machine. It does not imply ALL GNU software can. # # This file is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA # 02110-1301, USA. # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Please send patches to . Submit a context # diff and a properly formatted ChangeLog entry. # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. The user should be able to distinguish # a failure to support a valid configuration from a meaningless # configuration. # The goal of this file is to map all the various variations of a given # machine specification into a single specification in the form: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM # or in some cases, the newer four-part form: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM # It is wrong to echo any other type of specification. me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] CPU-MFR-OPSYS $0 [OPTION] ALIAS Canonicalize a configuration name. Operation modes: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.sub ($timestamp) Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help=" Try \`$me --help' for more information." # Parse command line while test $# -gt 0 ; do case $1 in --time-stamp | --time* | -t ) echo "$timestamp" ; exit ;; --version | -v ) echo "$version" ; exit ;; --help | --h* | -h ) echo "$usage"; exit ;; -- ) # Stop option processing shift; break ;; - ) # Use stdin as input. break ;; -* ) echo "$me: invalid option $1$help" exit 1 ;; *local*) # First pass through any local machine types. echo $1 exit ;; * ) break ;; esac done case $# in 0) echo "$me: missing argument$help" >&2 exit 1;; 1) ;; *) echo "$me: too many arguments$help" >&2 exit 1;; esac # Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). # Here we must recognize all the valid KERNEL-OS combinations. maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` case $maybe_os in nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \ uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \ storm-chaos* | os2-emx* | rtmk-nova*) os=-$maybe_os basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` ;; *) basic_machine=`echo $1 | sed 's/-[^-]*$//'` if [ $basic_machine != $1 ] then os=`echo $1 | sed 's/.*-/-/'` else os=; fi ;; esac ### Let's recognize common machines as not being operating systems so ### that things like config.sub decstation-3100 work. We also ### recognize some manufacturers as not being operating systems, so we ### can provide default operating systems below. case $os in -sun*os*) # Prevent following clause from handling this invalid input. ;; -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ -apple | -axis | -knuth | -cray) os= basic_machine=$1 ;; -sim | -cisco | -oki | -wec | -winbond) os= basic_machine=$1 ;; -scout) ;; -wrs) os=-vxworks basic_machine=$1 ;; -chorusos*) os=-chorusos basic_machine=$1 ;; -chorusrdb) os=-chorusrdb basic_machine=$1 ;; -hiux*) os=-hiuxwe2 ;; -sco6) os=-sco5v6 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5) os=-sco3.2v5 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco4) os=-sco3.2v4 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2.[4-9]*) os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2v[4-9]*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5v6*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco*) os=-sco3.2v2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -udk*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -isc) os=-isc2.2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -clix*) basic_machine=clipper-intergraph ;; -isc*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -lynx*) os=-lynxos ;; -ptx*) basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` ;; -windowsnt*) os=`echo $os | sed -e 's/windowsnt/winnt/'` ;; -psos*) os=-psos ;; -mint | -mint[0-9]*) basic_machine=m68k-atari os=-mint ;; esac # Decode aliases for certain CPU-COMPANY combinations. case $basic_machine in # Recognize the basic CPU types without company name. # Some are omitted here because they have special meanings below. 1750a | 580 \ | a29k \ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ | am33_2.0 \ | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \ | bfin \ | c4x | clipper \ | d10v | d30v | dlx | dsp16xx \ | fido | fr30 | frv \ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ | i370 | i860 | i960 | ia64 \ | ip2k | iq2000 \ | m32c | m32r | m32rle | m68000 | m68k | m88k \ | maxq | mb | microblaze | mcore | mep \ | mips | mipsbe | mipseb | mipsel | mipsle \ | mips16 \ | mips64 | mips64el \ | mips64vr | mips64vrel \ | mips64orion | mips64orionel \ | mips64vr4100 | mips64vr4100el \ | mips64vr4300 | mips64vr4300el \ | mips64vr5000 | mips64vr5000el \ | mips64vr5900 | mips64vr5900el \ | mipsisa32 | mipsisa32el \ | mipsisa32r2 | mipsisa32r2el \ | mipsisa64 | mipsisa64el \ | mipsisa64r2 | mipsisa64r2el \ | mipsisa64sb1 | mipsisa64sb1el \ | mipsisa64sr71k | mipsisa64sr71kel \ | mipstx39 | mipstx39el \ | mn10200 | mn10300 \ | mt \ | msp430 \ | nios | nios2 \ | ns16k | ns32k \ | or32 \ | pdp10 | pdp11 | pj | pjl \ | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \ | pyramid \ | score \ | sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ | sh64 | sh64le \ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ | spu | strongarm \ | tahoe | thumb | tic4x | tic80 | tron \ | v850 | v850e \ | we32k \ | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \ | z8k) basic_machine=$basic_machine-unknown ;; m6811 | m68hc11 | m6812 | m68hc12) # Motorola 68HC11/12. basic_machine=$basic_machine-unknown os=-none ;; m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) ;; ms1) basic_machine=mt-unknown ;; # We use `pc' rather than `unknown' # because (1) that's what they normally are, and # (2) the word "unknown" tends to confuse beginning users. i*86 | x86_64) basic_machine=$basic_machine-pc ;; # Object if more than one company name word. *-*-*) echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 exit 1 ;; # Recognize the basic CPU types with company name. 580-* \ | a29k-* \ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ | avr-* | avr32-* \ | bfin-* | bs2000-* \ | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \ | clipper-* | craynv-* | cydra-* \ | d10v-* | d30v-* | dlx-* \ | elxsi-* \ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ | h8300-* | h8500-* \ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ | i*86-* | i860-* | i960-* | ia64-* \ | ip2k-* | iq2000-* \ | m32c-* | m32r-* | m32rle-* \ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ | m88110-* | m88k-* | maxq-* | mcore-* \ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ | mips16-* \ | mips64-* | mips64el-* \ | mips64vr-* | mips64vrel-* \ | mips64orion-* | mips64orionel-* \ | mips64vr4100-* | mips64vr4100el-* \ | mips64vr4300-* | mips64vr4300el-* \ | mips64vr5000-* | mips64vr5000el-* \ | mips64vr5900-* | mips64vr5900el-* \ | mipsisa32-* | mipsisa32el-* \ | mipsisa32r2-* | mipsisa32r2el-* \ | mipsisa64-* | mipsisa64el-* \ | mipsisa64r2-* | mipsisa64r2el-* \ | mipsisa64sb1-* | mipsisa64sb1el-* \ | mipsisa64sr71k-* | mipsisa64sr71kel-* \ | mipstx39-* | mipstx39el-* \ | mmix-* \ | mt-* \ | msp430-* \ | nios-* | nios2-* \ | none-* | np1-* | ns16k-* | ns32k-* \ | orion-* \ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \ | pyramid-* \ | romp-* | rs6000-* \ | sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ | sparclite-* \ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \ | tahoe-* | thumb-* \ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ | tron-* \ | v850-* | v850e-* | vax-* \ | we32k-* \ | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \ | xstormy16-* | xtensa*-* \ | ymp-* \ | z8k-*) ;; # Recognize the basic CPU types without company name, with glob match. xtensa*) basic_machine=$basic_machine-unknown ;; # Recognize the various machine names and aliases which stand # for a CPU type and a company and sometimes even an OS. 386bsd) basic_machine=i386-unknown os=-bsd ;; 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) basic_machine=m68000-att ;; 3b*) basic_machine=we32k-att ;; a29khif) basic_machine=a29k-amd os=-udi ;; abacus) basic_machine=abacus-unknown ;; adobe68k) basic_machine=m68010-adobe os=-scout ;; alliant | fx80) basic_machine=fx80-alliant ;; altos | altos3068) basic_machine=m68k-altos ;; am29k) basic_machine=a29k-none os=-bsd ;; amd64) basic_machine=x86_64-pc ;; amd64-*) basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` ;; amdahl) basic_machine=580-amdahl os=-sysv ;; amiga | amiga-*) basic_machine=m68k-unknown ;; amigaos | amigados) basic_machine=m68k-unknown os=-amigaos ;; amigaunix | amix) basic_machine=m68k-unknown os=-sysv4 ;; apollo68) basic_machine=m68k-apollo os=-sysv ;; apollo68bsd) basic_machine=m68k-apollo os=-bsd ;; aux) basic_machine=m68k-apple os=-aux ;; balance) basic_machine=ns32k-sequent os=-dynix ;; blackfin) basic_machine=bfin-unknown os=-linux ;; blackfin-*) basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; c90) basic_machine=c90-cray os=-unicos ;; convex-c1) basic_machine=c1-convex os=-bsd ;; convex-c2) basic_machine=c2-convex os=-bsd ;; convex-c32) basic_machine=c32-convex os=-bsd ;; convex-c34) basic_machine=c34-convex os=-bsd ;; convex-c38) basic_machine=c38-convex os=-bsd ;; cray | j90) basic_machine=j90-cray os=-unicos ;; craynv) basic_machine=craynv-cray os=-unicosmp ;; cr16) basic_machine=cr16-unknown os=-elf ;; crds | unos) basic_machine=m68k-crds ;; crisv32 | crisv32-* | etraxfs*) basic_machine=crisv32-axis ;; cris | cris-* | etrax*) basic_machine=cris-axis ;; crx) basic_machine=crx-unknown os=-elf ;; da30 | da30-*) basic_machine=m68k-da30 ;; decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) basic_machine=mips-dec ;; decsystem10* | dec10*) basic_machine=pdp10-dec os=-tops10 ;; decsystem20* | dec20*) basic_machine=pdp10-dec os=-tops20 ;; delta | 3300 | motorola-3300 | motorola-delta \ | 3300-motorola | delta-motorola) basic_machine=m68k-motorola ;; delta88) basic_machine=m88k-motorola os=-sysv3 ;; djgpp) basic_machine=i586-pc os=-msdosdjgpp ;; dpx20 | dpx20-*) basic_machine=rs6000-bull os=-bosx ;; dpx2* | dpx2*-bull) basic_machine=m68k-bull os=-sysv3 ;; ebmon29k) basic_machine=a29k-amd os=-ebmon ;; elxsi) basic_machine=elxsi-elxsi os=-bsd ;; encore | umax | mmax) basic_machine=ns32k-encore ;; es1800 | OSE68k | ose68k | ose | OSE) basic_machine=m68k-ericsson os=-ose ;; fx2800) basic_machine=i860-alliant ;; genix) basic_machine=ns32k-ns ;; gmicro) basic_machine=tron-gmicro os=-sysv ;; go32) basic_machine=i386-pc os=-go32 ;; h3050r* | hiux*) basic_machine=hppa1.1-hitachi os=-hiuxwe2 ;; h8300hms) basic_machine=h8300-hitachi os=-hms ;; h8300xray) basic_machine=h8300-hitachi os=-xray ;; h8500hms) basic_machine=h8500-hitachi os=-hms ;; harris) basic_machine=m88k-harris os=-sysv3 ;; hp300-*) basic_machine=m68k-hp ;; hp300bsd) basic_machine=m68k-hp os=-bsd ;; hp300hpux) basic_machine=m68k-hp os=-hpux ;; hp3k9[0-9][0-9] | hp9[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k2[0-9][0-9] | hp9k31[0-9]) basic_machine=m68000-hp ;; hp9k3[2-9][0-9]) basic_machine=m68k-hp ;; hp9k6[0-9][0-9] | hp6[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k7[0-79][0-9] | hp7[0-79][0-9]) basic_machine=hppa1.1-hp ;; hp9k78[0-9] | hp78[0-9]) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) # FIXME: really hppa2.0-hp basic_machine=hppa1.1-hp ;; hp9k8[0-9][13679] | hp8[0-9][13679]) basic_machine=hppa1.1-hp ;; hp9k8[0-9][0-9] | hp8[0-9][0-9]) basic_machine=hppa1.0-hp ;; hppa-next) os=-nextstep3 ;; hppaosf) basic_machine=hppa1.1-hp os=-osf ;; hppro) basic_machine=hppa1.1-hp os=-proelf ;; i370-ibm* | ibm*) basic_machine=i370-ibm ;; # I'm not sure what "Sysv32" means. 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You may also peek at any GNU archive site, in case some other package would contain this missing \`$1' program." exit 1 ;; esac exit 0 # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-end: "$" # End: dhcp-probe-1.3.0/config/depcomp0000755000175100017510000004271311164405072016421 0ustar metro-gimetro-gi#! /bin/sh # depcomp - compile a program generating dependencies as side-effects scriptversion=2007-03-29.01 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007 Free Software # Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . case $1 in '') echo "$0: No command. Try \`$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: depcomp [--help] [--version] PROGRAM [ARGS] Run PROGRAMS ARGS to compile a file, generating dependencies as side-effects. Environment variables: depmode Dependency tracking mode. source Source file read by `PROGRAMS ARGS'. object Object file output by `PROGRAMS ARGS'. DEPDIR directory where to store dependencies. depfile Dependency file to output. tmpdepfile Temporary file to use when outputing dependencies. libtool Whether libtool is used (yes/no). Report bugs to . EOF exit $? ;; -v | --v*) echo "depcomp $scriptversion" exit $? ;; esac if test -z "$depmode" || test -z "$source" || test -z "$object"; then echo "depcomp: Variables source, object and depmode must be set" 1>&2 exit 1 fi # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po. depfile=${depfile-`echo "$object" | sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`} tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" # Some modes work just like other modes, but use different flags. We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case # here, because this file can only contain one case statement. if test "$depmode" = hp; then # HP compiler uses -M and no extra arg. gccflag=-M depmode=gcc fi if test "$depmode" = dashXmstdout; then # This is just like dashmstdout with a different argument. dashmflag=-xM depmode=dashmstdout fi case "$depmode" in gcc3) ## gcc 3 implements dependency tracking that does exactly what ## we want. Yay! Note: for some reason libtool 1.4 doesn't like ## it if -MD -MP comes after the -MF stuff. Hmm. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon ## the command line argument order; so add the flags where they ## appear in depend2.am. 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However on # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c # ICC 7.0 will fill foo.d with something like # foo.o: sub/foo.c # foo.o: sub/foo.h # which is wrong. We want: # sub/foo.o: sub/foo.c # sub/foo.o: sub/foo.h # sub/foo.c: # sub/foo.h: # ICC 7.1 will output # foo.o: sub/foo.c sub/foo.h # and will wrap long lines using \ : # foo.o: sub/foo.c ... \ # sub/foo.h ... \ # ... "$@" -MD -MF "$tmpdepfile" stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" # Each line is of the form `foo.o: dependent.h', # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'. # Do two passes, one to just change these to # `$object: dependent.h' and one to simply `dependent.h:'. sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile" # Some versions of the HPUX 10.20 sed can't process this invocation # correctly. Breaking it into two sed invocations is a workaround. sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; hp2) # The "hp" stanza above does not work with aCC (C++) and HP's ia64 # compilers, which have integrated preprocessors. The correct option # to use with these is +Maked; it writes dependencies to a file named # 'foo.d', which lands next to the object file, wherever that # happens to be. # Much of this is similar to the tru64 case; see comments there. dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` test "x$dir" = "x$object" && dir= base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` if test "$libtool" = yes; then tmpdepfile1=$dir$base.d tmpdepfile2=$dir.libs/$base.d "$@" -Wc,+Maked else tmpdepfile1=$dir$base.d tmpdepfile2=$dir$base.d "$@" +Maked fi stat=$? if test $stat -eq 0; then : else rm -f "$tmpdepfile1" "$tmpdepfile2" exit $stat fi for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" do test -f "$tmpdepfile" && break done if test -f "$tmpdepfile"; then sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile" # Add `dependent.h:' lines. sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile" else echo "#dummy" > "$depfile" fi rm -f "$tmpdepfile" "$tmpdepfile2" ;; tru64) # The Tru64 compiler uses -MD to generate dependencies as a side # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'. # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put # dependencies in `foo.d' instead, so we check for that too. # Subdirectories are respected. dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` test "x$dir" = "x$object" && dir= base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` if test "$libtool" = yes; then # With Tru64 cc, shared objects can also be used to make a # static library. This mechanism is used in libtool 1.4 series to # handle both shared and static libraries in a single compilation. # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d. # # With libtool 1.5 this exception was removed, and libtool now # generates 2 separate objects for the 2 libraries. These two # compilations output dependencies in $dir.libs/$base.o.d and # in $dir$base.o.d. We have to check for both files, because # one of the two compilations can be disabled. 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"$@" || exit $? # Remove the call to Libtool. if test "$libtool" = yes; then while test $1 != '--mode=compile'; do shift done shift fi # Remove `-o $object'. IFS=" " for arg do case $arg in -o) shift ;; $object) shift ;; *) set fnord "$@" "$arg" shift # fnord shift # $arg ;; esac done test -z "$dashmflag" && dashmflag=-M # Require at least two characters before searching for `:' # in the target name. This is to cope with DOS-style filenames: # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise. "$@" $dashmflag | sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile" rm -f "$depfile" cat < "$tmpdepfile" > "$depfile" tr ' ' ' ' < "$tmpdepfile" | \ ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; dashXmstdout) # This case only exists to satisfy depend.m4. 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"$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile" echo " " >> "$depfile" . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile" rm -f "$tmpdepfile" ;; none) exec "$@" ;; *) echo "Unknown depmode $depmode" 1>&2 exit 1 ;; esac exit 0 # Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-end: "$" # End: dhcp-probe-1.3.0/config/install-sh0000755000175100017510000003246411164405072017052 0ustar metro-gimetro-gi#!/bin/sh # install - install a program, script, or datafile scriptversion=2006-12-25.00 # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # `make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. nl=' ' IFS=" "" $nl" # set DOITPROG to echo to test this script # Don't use :- since 4.3BSD and earlier shells don't like it. doit=${DOITPROG-} if test -z "$doit"; then doit_exec=exec else doit_exec=$doit fi # Put in absolute file names if you don't have them in your path; # or use environment vars. chgrpprog=${CHGRPPROG-chgrp} chmodprog=${CHMODPROG-chmod} chownprog=${CHOWNPROG-chown} cmpprog=${CMPPROG-cmp} cpprog=${CPPROG-cp} mkdirprog=${MKDIRPROG-mkdir} mvprog=${MVPROG-mv} rmprog=${RMPROG-rm} stripprog=${STRIPPROG-strip} posix_glob='?' initialize_posix_glob=' test "$posix_glob" != "?" || { if (set -f) 2>/dev/null; then posix_glob= else posix_glob=: fi } ' posix_mkdir= # Desired mode of installed file. mode=0755 chgrpcmd= chmodcmd=$chmodprog chowncmd= mvcmd=$mvprog rmcmd="$rmprog -f" stripcmd= src= dst= dir_arg= dst_arg= copy_on_change=false no_target_directory= usage="\ Usage: $0 [OPTION]... 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See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA # 02110-1301, USA. # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Per Bothner . # Please send patches to . Submit a context # diff and a properly formatted ChangeLog entry. # # This script attempts to guess a canonical system name similar to # config.sub. If it succeeds, it prints the system name on stdout, and # exits with 0. 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The system name ranges from "MiNT" over "FreeMiNT" # to the lowercase version "mint" (or "freemint"). Finally # the system name "TOS" denotes a system which is actually not # MiNT. But MiNT is downward compatible to TOS, so this should # be no problem. atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) echo m68k-milan-mint${UNAME_RELEASE} exit ;; hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) echo m68k-hades-mint${UNAME_RELEASE} exit ;; *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) echo m68k-unknown-mint${UNAME_RELEASE} exit ;; m68k:machten:*:*) echo m68k-apple-machten${UNAME_RELEASE} exit ;; powerpc:machten:*:*) echo powerpc-apple-machten${UNAME_RELEASE} exit ;; RISC*:Mach:*:*) echo mips-dec-mach_bsd4.3 exit ;; RISC*:ULTRIX:*:*) echo mips-dec-ultrix${UNAME_RELEASE} exit ;; VAX*:ULTRIX*:*:*) echo vax-dec-ultrix${UNAME_RELEASE} exit ;; 2020:CLIX:*:* | 2430:CLIX:*:*) echo clipper-intergraph-clix${UNAME_RELEASE} exit ;; mips:*:*:UMIPS | mips:*:*:RISCos) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #ifdef __cplusplus #include /* for printf() prototype */ int main (int argc, char *argv[]) { #else int main (argc, argv) int argc; char *argv[]; { #endif #if defined (host_mips) && defined (MIPSEB) #if defined (SYSTYPE_SYSV) printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_SVR4) printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); #endif #endif exit (-1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && SYSTEM_NAME=`$dummy $dummyarg` && { echo "$SYSTEM_NAME"; exit; } echo mips-mips-riscos${UNAME_RELEASE} exit ;; Motorola:PowerMAX_OS:*:*) echo powerpc-motorola-powermax exit ;; Motorola:*:4.3:PL8-*) echo powerpc-harris-powermax exit ;; Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) echo powerpc-harris-powermax exit ;; Night_Hawk:Power_UNIX:*:*) echo powerpc-harris-powerunix exit ;; m88k:CX/UX:7*:*) echo m88k-harris-cxux7 exit ;; m88k:*:4*:R4*) echo m88k-motorola-sysv4 exit ;; m88k:*:3*:R3*) echo m88k-motorola-sysv3 exit ;; AViiON:dgux:*:*) # DG/UX returns AViiON for all architectures UNAME_PROCESSOR=`/usr/bin/uname -p` if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] then if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ [ ${TARGET_BINARY_INTERFACE}x = x ] then echo m88k-dg-dgux${UNAME_RELEASE} else echo m88k-dg-dguxbcs${UNAME_RELEASE} fi else echo i586-dg-dgux${UNAME_RELEASE} fi exit ;; M88*:DolphinOS:*:*) # DolphinOS (SVR3) echo m88k-dolphin-sysv3 exit ;; M88*:*:R3*:*) # Delta 88k system running SVR3 echo m88k-motorola-sysv3 exit ;; XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) echo m88k-tektronix-sysv3 exit ;; Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) echo m68k-tektronix-bsd exit ;; *:IRIX*:*:*) echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` exit ;; ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) echo i386-ibm-aix exit ;; ia64:AIX:*:*) if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} exit ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` then echo "$SYSTEM_NAME" else echo rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then echo rs6000-ibm-aix3.2.4 else echo rs6000-ibm-aix3.2 fi exit ;; *:AIX:*:[456]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${IBM_ARCH}-ibm-aix${IBM_REV} exit ;; *:AIX:*:*) echo rs6000-ibm-aix exit ;; ibmrt:4.4BSD:*|romp-ibm:BSD:*) echo romp-ibm-bsd4.4 exit ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to exit ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) echo rs6000-bull-bosx exit ;; DPX/2?00:B.O.S.:*:*) echo m68k-bull-sysv3 exit ;; 9000/[34]??:4.3bsd:1.*:*) echo m68k-hp-bsd exit ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) echo m68k-hp-bsd4.4 exit ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` case "${UNAME_MACHINE}" in 9000/31? ) HP_ARCH=m68000 ;; 9000/[34]?? ) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if [ -x /usr/bin/getconf ]; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case "${sc_cpu_version}" in 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case "${sc_kernel_bits}" in 32) HP_ARCH="hppa2.0n" ;; 64) HP_ARCH="hppa2.0w" ;; '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 esac ;; esac fi if [ "${HP_ARCH}" = "" ]; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if [ ${HP_ARCH} = "hppa2.0w" ] then eval $set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | grep __LP64__ >/dev/null then HP_ARCH="hppa2.0w" else HP_ARCH="hppa64" fi fi echo ${HP_ARCH}-hp-hpux${HPUX_REV} exit ;; ia64:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` echo ia64-hp-hpux${HPUX_REV} exit ;; 3050*:HI-UX:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } echo unknown-hitachi-hiuxwe2 exit ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) echo hppa1.1-hp-bsd exit ;; 9000/8??:4.3bsd:*:*) echo hppa1.0-hp-bsd exit ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) echo hppa1.0-hp-mpeix exit ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) echo hppa1.1-hp-osf exit ;; hp8??:OSF1:*:*) echo hppa1.0-hp-osf exit ;; i*86:OSF1:*:*) if [ -x /usr/sbin/sysversion ] ; then echo ${UNAME_MACHINE}-unknown-osf1mk else echo ${UNAME_MACHINE}-unknown-osf1 fi exit ;; parisc*:Lites*:*:*) echo hppa1.1-hp-lites exit ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) echo c1-convex-bsd exit ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) echo c34-convex-bsd exit ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) echo c38-convex-bsd exit ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) echo c4-convex-bsd exit ;; CRAY*Y-MP:*:*:*) echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*[A-Z]90:*:*:*) echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*T3E:*:*:*) echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*SV1:*:*:*) echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; *:UNICOS/mp:*:*) echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} exit ;; sparc*:BSD/OS:*:*) echo sparc-unknown-bsdi${UNAME_RELEASE} exit ;; *:BSD/OS:*:*) echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} exit ;; *:FreeBSD:*:*) case ${UNAME_MACHINE} in pc98) echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; amd64) echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; *) echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; esac exit ;; i*:CYGWIN*:*) echo ${UNAME_MACHINE}-pc-cygwin exit ;; *:MINGW*:*) echo ${UNAME_MACHINE}-pc-mingw32 exit ;; i*:windows32*:*) # uname -m includes "-pc" on this system. echo ${UNAME_MACHINE}-mingw32 exit ;; i*:PW*:*) echo ${UNAME_MACHINE}-pc-pw32 exit ;; *:Interix*:[3456]*) case ${UNAME_MACHINE} in x86) echo i586-pc-interix${UNAME_RELEASE} exit ;; EM64T | authenticamd) echo x86_64-unknown-interix${UNAME_RELEASE} exit ;; IA64) echo ia64-unknown-interix${UNAME_RELEASE} exit ;; esac ;; [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) echo i${UNAME_MACHINE}-pc-mks exit ;; i*:Windows_NT*:* | Pentium*:Windows_NT*:*) # How do we know it's Interix rather than the generic POSIX subsystem? # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we # UNAME_MACHINE based on the output of uname instead of i386? echo i586-pc-interix exit ;; i*:UWIN*:*) echo ${UNAME_MACHINE}-pc-uwin exit ;; amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) echo x86_64-unknown-cygwin exit ;; p*:CYGWIN*:*) echo powerpcle-unknown-cygwin exit ;; prep*:SunOS:5.*:*) echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; *:GNU:*:*) # the GNU system echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` exit ;; *:GNU/*:*:*) # other systems with GNU libc and userland echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu exit ;; i*86:Minix:*:*) echo ${UNAME_MACHINE}-pc-minix exit ;; arm*:Linux:*:*) eval $set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then echo ${UNAME_MACHINE}-unknown-linux-gnu else echo ${UNAME_MACHINE}-unknown-linux-gnueabi fi exit ;; avr32*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; cris:Linux:*:*) echo cris-axis-linux-gnu exit ;; crisv32:Linux:*:*) echo crisv32-axis-linux-gnu exit ;; frv:Linux:*:*) echo frv-unknown-linux-gnu exit ;; ia64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; m32r*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; m68*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; mips:Linux:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #undef CPU #undef mips #undef mipsel #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) CPU=mipsel #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) CPU=mips #else CPU= #endif #endif EOF eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' /^CPU/{ s: ::g p }'`" test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } ;; mips64:Linux:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #undef CPU #undef mips64 #undef mips64el #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) CPU=mips64el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) CPU=mips64 #else CPU= #endif #endif EOF eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' /^CPU/{ s: ::g p }'`" test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; } ;; or32:Linux:*:*) echo or32-unknown-linux-gnu exit ;; ppc:Linux:*:*) echo powerpc-unknown-linux-gnu exit ;; ppc64:Linux:*:*) echo powerpc64-unknown-linux-gnu exit ;; alpha:Linux:*:*) case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in EV5) UNAME_MACHINE=alphaev5 ;; EV56) UNAME_MACHINE=alphaev56 ;; PCA56) UNAME_MACHINE=alphapca56 ;; PCA57) UNAME_MACHINE=alphapca56 ;; EV6) UNAME_MACHINE=alphaev6 ;; EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} exit ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) echo hppa1.1-unknown-linux-gnu ;; PA8*) echo hppa2.0-unknown-linux-gnu ;; *) echo hppa-unknown-linux-gnu ;; esac exit ;; parisc64:Linux:*:* | hppa64:Linux:*:*) echo hppa64-unknown-linux-gnu exit ;; s390:Linux:*:* | s390x:Linux:*:*) echo ${UNAME_MACHINE}-ibm-linux exit ;; sh64*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; sh*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; sparc:Linux:*:* | sparc64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; vax:Linux:*:*) echo ${UNAME_MACHINE}-dec-linux-gnu exit ;; x86_64:Linux:*:*) echo x86_64-unknown-linux-gnu exit ;; xtensa*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-gnu exit ;; i*86:Linux:*:*) # The BFD linker knows what the default object file format is, so # first see if it will tell us. cd to the root directory to prevent # problems with other programs or directories called `ld' in the path. # Set LC_ALL=C to ensure ld outputs messages in English. ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \ | sed -ne '/supported targets:/!d s/[ ][ ]*/ /g s/.*supported targets: *// s/ .*// p'` case "$ld_supported_targets" in elf32-i386) TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu" ;; a.out-i386-linux) echo "${UNAME_MACHINE}-pc-linux-gnuaout" exit ;; coff-i386) echo "${UNAME_MACHINE}-pc-linux-gnucoff" exit ;; "") # Either a pre-BFD a.out linker (linux-gnuoldld) or # one that does not give us useful --help. echo "${UNAME_MACHINE}-pc-linux-gnuoldld" exit ;; esac # Determine whether the default compiler is a.out or elf eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include #ifdef __ELF__ # ifdef __GLIBC__ # if __GLIBC__ >= 2 LIBC=gnu # else LIBC=gnulibc1 # endif # else LIBC=gnulibc1 # endif #else #if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) LIBC=gnu #else LIBC=gnuaout #endif #endif #ifdef __dietlibc__ LIBC=dietlibc #endif EOF eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' /^LIBC/{ s: ::g p }'`" test x"${LIBC}" != x && { echo "${UNAME_MACHINE}-pc-linux-${LIBC}" exit } test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; } ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. echo i386-sequent-sysv4 exit ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} exit ;; i*86:OS/2:*:*) # If we were able to find `uname', then EMX Unix compatibility # is probably installed. echo ${UNAME_MACHINE}-pc-os2-emx exit ;; i*86:XTS-300:*:STOP) echo ${UNAME_MACHINE}-unknown-stop exit ;; i*86:atheos:*:*) echo ${UNAME_MACHINE}-unknown-atheos exit ;; i*86:syllable:*:*) echo ${UNAME_MACHINE}-pc-syllable exit ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*) echo i386-unknown-lynxos${UNAME_RELEASE} exit ;; i*86:*DOS:*:*) echo ${UNAME_MACHINE}-pc-msdosdjgpp exit ;; i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} else echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} fi exit ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} exit ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 echo ${UNAME_MACHINE}-pc-sco$UNAME_REL else echo ${UNAME_MACHINE}-pc-sysv32 fi exit ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i386. echo i386-pc-msdosdjgpp exit ;; Intel:Mach:3*:*) echo i386-pc-mach3 exit ;; paragon:*:*:*) echo i860-intel-osf1 exit ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 fi exit ;; mini*:CTIX:SYS*5:*) # "miniframe" echo m68010-convergent-sysv exit ;; mc68k:UNIX:SYSTEM5:3.51m) echo m68k-convergent-sysv exit ;; M680?0:D-NIX:5.3:*) echo m68k-diab-dnix exit ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) echo m68k-unknown-lynxos${UNAME_RELEASE} exit ;; mc68030:UNIX_System_V:4.*:*) echo m68k-atari-sysv4 exit ;; TSUNAMI:LynxOS:2.*:*) echo sparc-unknown-lynxos${UNAME_RELEASE} exit ;; rs6000:LynxOS:2.*:*) echo rs6000-unknown-lynxos${UNAME_RELEASE} exit ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*) echo powerpc-unknown-lynxos${UNAME_RELEASE} exit ;; SM[BE]S:UNIX_SV:*:*) echo mips-dde-sysv${UNAME_RELEASE} exit ;; RM*:ReliantUNIX-*:*:*) echo mips-sni-sysv4 exit ;; RM*:SINIX-*:*:*) echo mips-sni-sysv4 exit ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` echo ${UNAME_MACHINE}-sni-sysv4 else echo ns32k-sni-sysv fi exit ;; PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort # says echo i586-unisys-sysv4 exit ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm echo hppa1.1-stratus-sysv4 exit ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. echo i860-stratus-sysv4 exit ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. echo ${UNAME_MACHINE}-stratus-vos exit ;; *:VOS:*:*) # From Paul.Green@stratus.com. echo hppa1.1-stratus-vos exit ;; mc68*:A/UX:*:*) echo m68k-apple-aux${UNAME_RELEASE} exit ;; news*:NEWS-OS:6*:*) echo mips-sony-newsos6 exit ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if [ -d /usr/nec ]; then echo mips-nec-sysv${UNAME_RELEASE} else echo mips-unknown-sysv${UNAME_RELEASE} fi exit ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. echo powerpc-be-beos exit ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. echo powerpc-apple-beos exit ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. echo i586-pc-beos exit ;; SX-4:SUPER-UX:*:*) echo sx4-nec-superux${UNAME_RELEASE} exit ;; SX-5:SUPER-UX:*:*) echo sx5-nec-superux${UNAME_RELEASE} exit ;; SX-6:SUPER-UX:*:*) echo sx6-nec-superux${UNAME_RELEASE} exit ;; SX-7:SUPER-UX:*:*) echo sx7-nec-superux${UNAME_RELEASE} exit ;; SX-8:SUPER-UX:*:*) echo sx8-nec-superux${UNAME_RELEASE} exit ;; SX-8R:SUPER-UX:*:*) echo sx8r-nec-superux${UNAME_RELEASE} exit ;; Power*:Rhapsody:*:*) echo powerpc-apple-rhapsody${UNAME_RELEASE} exit ;; *:Rhapsody:*:*) echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} exit ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown case $UNAME_PROCESSOR in unknown) UNAME_PROCESSOR=powerpc ;; esac echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} exit ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = "x86"; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} exit ;; *:QNX:*:4*) echo i386-pc-qnx exit ;; NSE-?:NONSTOP_KERNEL:*:*) echo nse-tandem-nsk${UNAME_RELEASE} exit ;; NSR-?:NONSTOP_KERNEL:*:*) echo nsr-tandem-nsk${UNAME_RELEASE} exit ;; *:NonStop-UX:*:*) echo mips-compaq-nonstopux exit ;; BS2000:POSIX*:*:*) echo bs2000-siemens-sysv exit ;; DS/*:UNIX_System_V:*:*) echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} exit ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "$cputype" = "386"; then UNAME_MACHINE=i386 else UNAME_MACHINE="$cputype" fi echo ${UNAME_MACHINE}-unknown-plan9 exit ;; *:TOPS-10:*:*) echo pdp10-unknown-tops10 exit ;; *:TENEX:*:*) echo pdp10-unknown-tenex exit ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) echo pdp10-dec-tops20 exit ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) echo pdp10-xkl-tops20 exit ;; *:TOPS-20:*:*) echo pdp10-unknown-tops20 exit ;; *:ITS:*:*) echo pdp10-unknown-its exit ;; SEI:*:*:SEIUX) echo mips-sei-seiux${UNAME_RELEASE} exit ;; *:DragonFly:*:*) echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` exit ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case "${UNAME_MACHINE}" in A*) echo alpha-dec-vms ; exit ;; I*) echo ia64-dec-vms ; exit ;; V*) echo vax-dec-vms ; exit ;; esac ;; *:XENIX:*:SysV) echo i386-pc-xenix exit ;; i*86:skyos:*:*) echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' exit ;; i*86:rdos:*:*) echo ${UNAME_MACHINE}-pc-rdos exit ;; esac #echo '(No uname command or uname output not recognized.)' 1>&2 #echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 eval $set_cc_for_build cat >$dummy.c < # include #endif main () { #if defined (sony) #if defined (MIPSEB) /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, I don't know.... */ printf ("mips-sony-bsd\n"); exit (0); #else #include printf ("m68k-sony-newsos%s\n", #ifdef NEWSOS4 "4" #else "" #endif ); exit (0); #endif #endif #if defined (__arm) && defined (__acorn) && defined (__unix) printf ("arm-acorn-riscix\n"); exit (0); #endif #if defined (hp300) && !defined (hpux) printf ("m68k-hp-bsd\n"); exit (0); #endif #if defined (NeXT) #if !defined (__ARCHITECTURE__) #define __ARCHITECTURE__ "m68k" #endif int version; version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; if (version < 4) printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); else printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); exit (0); #endif #if defined (MULTIMAX) || defined (n16) #if defined (UMAXV) printf ("ns32k-encore-sysv\n"); exit (0); #else #if defined (CMU) printf ("ns32k-encore-mach\n"); exit (0); #else printf ("ns32k-encore-bsd\n"); exit (0); #endif #endif #endif #if defined (__386BSD__) printf ("i386-pc-bsd\n"); exit (0); #endif #if defined (sequent) #if defined (i386) printf ("i386-sequent-dynix\n"); exit (0); #endif #if defined (ns32000) printf ("ns32k-sequent-dynix\n"); exit (0); #endif #endif #if defined (_SEQUENT_) struct utsname un; uname(&un); if (strncmp(un.version, "V2", 2) == 0) { printf ("i386-sequent-ptx2\n"); exit (0); } if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ printf ("i386-sequent-ptx1\n"); exit (0); } printf ("i386-sequent-ptx\n"); exit (0); #endif #if defined (vax) # if !defined (ultrix) # include # if defined (BSD) # if BSD == 43 printf ("vax-dec-bsd4.3\n"); exit (0); # else # if BSD == 199006 printf ("vax-dec-bsd4.3reno\n"); exit (0); # else printf ("vax-dec-bsd\n"); exit (0); # endif # endif # else printf ("vax-dec-bsd\n"); exit (0); # endif # else printf ("vax-dec-ultrix\n"); exit (0); # endif #endif #if defined (alliant) && defined (i860) printf ("i860-alliant-bsd\n"); exit (0); #endif exit (1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } # Apollos put the system type in the environment. test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; } # Convex versions that predate uname can use getsysinfo(1) if [ -x /usr/convex/getsysinfo ] then case `getsysinfo -f cpu_type` in c1*) echo c1-convex-bsd exit ;; c2*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; c34*) echo c34-convex-bsd exit ;; c38*) echo c38-convex-bsd exit ;; c4*) echo c4-convex-bsd exit ;; esac fi cat >&2 < in order to provide the needed information to handle your system. config.guess timestamp = $timestamp uname -m = `(uname -m) 2>/dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = ${UNAME_MACHINE} UNAME_RELEASE = ${UNAME_RELEASE} UNAME_SYSTEM = ${UNAME_SYSTEM} UNAME_VERSION = ${UNAME_VERSION} EOF exit 1 # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: dhcp-probe-1.3.0/config/mkinstalldirs0000755000175100017510000000664711164405072017660 0ustar metro-gimetro-gi#! /bin/sh # mkinstalldirs --- make directory hierarchy scriptversion=2006-05-11.19 # Original author: Noah Friedman # Created: 1993-05-16 # Public domain. # # This file is maintained in Automake, please report # bugs to or send patches to # . nl=' ' IFS=" "" $nl" errstatus=0 dirmode= usage="\ Usage: mkinstalldirs [-h] [--help] [--version] [-m MODE] DIR ... Create each directory DIR (with mode MODE, if specified), including all leading file name components. Report bugs to ." # process command line arguments while test $# -gt 0 ; do case $1 in -h | --help | --h*) # -h for help echo "$usage" exit $? ;; -m) # -m PERM arg shift test $# -eq 0 && { echo "$usage" 1>&2; exit 1; } dirmode=$1 shift ;; --version) echo "$0 $scriptversion" exit $? ;; --) # stop option processing shift break ;; -*) # unknown option echo "$usage" 1>&2 exit 1 ;; *) # first non-opt arg break ;; esac done for file do if test -d "$file"; then shift else break fi done case $# in 0) exit 0 ;; esac # Solaris 8's mkdir -p isn't thread-safe. If you mkdir -p a/b and # mkdir -p a/c at the same time, both will detect that a is missing, # one will create a, then the other will try to create a and die with # a "File exists" error. This is a problem when calling mkinstalldirs # from a parallel make. We use --version in the probe to restrict # ourselves to GNU mkdir, which is thread-safe. case $dirmode in '') if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then echo "mkdir -p -- $*" exec mkdir -p -- "$@" else # On NextStep and OpenStep, the `mkdir' command does not # recognize any option. It will interpret all options as # directories to create, and then abort because `.' already # exists. test -d ./-p && rmdir ./-p test -d ./--version && rmdir ./--version fi ;; *) if mkdir -m "$dirmode" -p --version . >/dev/null 2>&1 && test ! -d ./--version; then echo "mkdir -m $dirmode -p -- $*" exec mkdir -m "$dirmode" -p -- "$@" else # Clean up after NextStep and OpenStep mkdir. for d in ./-m ./-p ./--version "./$dirmode"; do test -d $d && rmdir $d done fi ;; esac for file do case $file in /*) pathcomp=/ ;; *) pathcomp= ;; esac oIFS=$IFS IFS=/ set fnord $file shift IFS=$oIFS for d do test "x$d" = x && continue pathcomp=$pathcomp$d case $pathcomp in -*) pathcomp=./$pathcomp ;; esac if test ! -d "$pathcomp"; then echo "mkdir $pathcomp" mkdir "$pathcomp" || lasterr=$? if test ! -d "$pathcomp"; then errstatus=$lasterr else if test ! -z "$dirmode"; then echo "chmod $dirmode $pathcomp" lasterr= chmod "$dirmode" "$pathcomp" || lasterr=$? if test ! -z "$lasterr"; then errstatus=$lasterr fi fi fi fi pathcomp=$pathcomp/ done done exit $errstatus # Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-end: "$" # End: