pax_global_header00006660000000000000000000000064127130242770014517gustar00rootroot0000000000000052 comment=09def95891f8d62b96d6c04de1c688e1af7f2325 simpleproxy-v.3.5/000077500000000000000000000000001271302427700142255ustar00rootroot00000000000000simpleproxy-v.3.5/.gitignore000066400000000000000000000000771271302427700162210ustar00rootroot00000000000000Makefile *.o config.cache config.log config.status simpleproxy simpleproxy-v.3.5/ChangeLog000066400000000000000000000104151271302427700160000ustar00rootroot000000000000002016-05-05 Vadim Zaliva * version 3.5 released 2016-05-04 Vadim Zaliva * simpleproxy.c: Fixed but where trace logs incorrectly resolve source and destination IP addresses. Addressed sitation where simpleproxy performs poorly when nss_mdns is in use. Minor code cleanup. 2005-08-25 Vlad Karpinsky * version 3.4 released 2005-08-22 Vadim Zaliva * simpleproxy.c (log): Patch from Ulf Harnhammar to avoid security vulnerability which could have been exploited through replies from remote HTTP proxies. 2003-11-08 Vadim Zaliva * simpleproxy.c (parse_host_port): Patch from 'apollock' accepted which fixes bug #823883. Version 3.3 2003-05-07 Vadim Zaliva * cfg.c (readcfg): closing files when reading Cfg 2003-03-09 Vadim Zaliva * new version number 3.2 * simpleproxy.c (main): bugfix from Christophe Bothamy 2000-09-04 Vadim Zaliva * simpleproxy.man: * simpleproxy.c: Integrated patch from Cedric Tefft adding HTTP proxy authentification support. 2000-07-27 Vlad Karpinsky * new version number 3.1 2000-07-25 Vadim Zaliva * simpleproxy.c (pass_all): Bug #103361 1999-12-10 Vadim Zaliva * simpleproxy.spec (Name): this codebase will be called version 3.0 * simpleproxy.c: minor compilation warning fixes and win32 compatibility from Pavel Roskin 1999-09-24 Vadim Zaliva * cfg.c (cfg_new_entry): bug found by compauqe compiler corrected. 1999-09-15 Vadim Zaliva * cfg.c: max token length check. * Makefile.in (distclean): distclean added 1999-08-17 Vadim Zaliva * cfg.c (readcfg): small memory leak removed. 1999-06-28 Vadim Zaliva * simpleproxy.c (trim): some funny code removed. (main): releasing memory after reading cfg. * cfg.c: new implementation. 1999-06-07 Vlad Karpinsky * simpleproxy.c Optimization, brush up. 1999-05-27 Vlad Karpinsky * simpleproxy.c New syntax for command line options (old is still supported). Config file reading. Brush up. 1999-04-22 Vadim Zaliva * simpleproxy.c (main): Reading cfg file and processing options. (main): Better checks for options compatibility. 1999-04-20 Vadim Zaliva * simpleproxy.c (log): type argument added. (logopen): warning when compiled without syslog added. (main): error notification on failed POP3 login. (main): return error code '1' if pop3 login failed. (log): LOG_DEBUG messages printed only if compiled with DEBUG (pop3login): pop3 logic is greatly improved. now we loop in finite automate here. Also we process more erroneus sitiuations. Potential security flaw removed. 1999-04-16 Vadim Zaliva * sample.cfg: sample cfg file created. * simpleproxy.c: Reading cfg file mechanism replaced by new one from cfg.c. All platform dependency checks are done with Autoconf now. Different portability improvements. GPL comment added to simpleproxy.c 1999-04-07 Vadim Zaliva * Makefile.in: GNU autoconf. (First step. Still needs better integraion with RPM building). Mon Nov 16 14:23:33 PST 1998 Vlad Karpinsky * spec file updates from Pavel Roskin * inserted. Wed Nov 11 15:18:34 1998 Vadim Zaliva * Compiled under FreeBSD-2.2.7 1998-11-11 Vadim Zaliva * simpleproxy.man spelling and formating according to comments from Pavel Roskin 1996-09-14 Vlad Karpinsky * Version 2.2b-1 No changes. New version released. 1998-09-13 Vadim Zaliva * Added shutdown to make sure all sockets are properly closed. 1998-09-10 Vadim Zaliva * FTP and WWW locations added to readme. Chagelog added to spec. * spec file corrected to reflect recent version number (2.2a) simpleproxy-v.3.5/LICENSE.txt000066400000000000000000000432541271302427700160600ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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. 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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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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) year 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 Lesser General Public License instead of this License. simpleproxy-v.3.5/Makefile.in000066400000000000000000000015661271302427700163020ustar00rootroot00000000000000# $Id$ # Solaris 2.5 #CFLAGS=-fd -O -v -Xc -D__EXTENSIONS__ -DSUN CC=@CC@ CFLAGS=@CFLAGS@ @DEFS@ LIBS=@LIBS@ INSTALL = @INSTALL@ LINT=@LINT@ top_srcdir=@top_srcdir@ srcdir=@srcdir@ prefix=@prefix@ exec_prefix=@exec_prefix@ bindir=@bindir@ mandir=@mandir@ RM=rm -f all: simpleproxy lint: $(LINT) simpleproxy.c cfg.c clean: $(RM) *.o simpleproxy *~ core distclean: clean rm -f config.log config.cache config.status Makefile install: simpleproxy $(top_srcdir)/mkinstalldirs $(bindir) $(INSTALL) simpleproxy $(bindir) $(top_srcdir)/mkinstalldirs $(mandir)/man1 $(INSTALL) simpleproxy.man $(mandir)/man1/simpleproxy.1 simpleproxy: simpleproxy.o cfg.o Makefile $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o simpleproxy simpleproxy.o cfg.o $(LIBS) .c.o: $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -c $< cfg.o: cfg.c cfg.h Makefile simpleproxy.o: simpleproxy.c cfg.h Makefile simpleproxy-v.3.5/README.txt000066400000000000000000000016771271302427700157360ustar00rootroot00000000000000Simpleproxy =========== Original authors: ----------------- * Vadim Zaliva * Vlad Karpinsky * Vadim Tymchenko Contributors: ------------- * Renzo Davoli (HTML probe & HTTP authentication) * Patch submitters via sourceforge and github project pages Description ----------- Simpleproxy is a simple TCP proxy. It accepts connections on a local TCP port and forward them to anoter port on a remote host via TCP. It could be used as standalone daemon, or run via `inetd`. For various options such as POP3 user screening, logging, HTTP proxy support, see man page (man simpleproxy). Installation ------------ To install run `./configure`. Then, do 'make install'. License ------- GPLv2. See LICENSE.txt for details. Home page --------- To report bugs and get most recent version please go to: https://github.com/vzaliva/simpleproxy simpleproxy-v.3.5/TODO000066400000000000000000000006171271302427700147210ustar00rootroot00000000000000$Id$ . getclient for INETD. . not only PASS auth in POP3 supported. We need to support MD5 as well. . better command-line synax. . add distinctive application return codes and document them in man page. . add an option to control how long connection could be idle before terminated by simpleproxy. . add option to control max. number of simultaneous connections . improve support of tracing simpleproxy-v.3.5/cfg.c000066400000000000000000000211561271302427700151350ustar00rootroot00000000000000/* * $Id$ * * Vadim Zaliva * http://www.crocodile.org/ * * Copyright (C) 1999 Vadim Zaliva * * 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. * */ #include "cfg.h" #include #include #include #include #include #define MAXTOKENLEN 1024 static int cfg_entry_cmp(const void *a,const void *b) { return(strcmp((*((struct Dict **)a))->name, (*((struct Dict **)b))->name)); } static int cfg_entry_match(const void *a,const void *b) { return(strcmp((const char *)a, (*((struct Dict **)b))->name)); } char *cfgfind(const char *name,struct Cfg *cfg, int offset) { struct Dict **res; res=(struct Dict **)bsearch(name, cfg->dict, cfg->nelements, sizeof(struct Dict *), cfg_entry_match ); if(!res) return NULL; if(offset>=(*res)->nvalues) return NULL; return (*res)->value[offset]; } int writecfg(const char *name,struct Cfg *cfg) { FILE *f; int j; int i; if((f=fopen(name,"wb"))==NULL) return -1; if(cfg) { for(i=0;inelements;i++) { if(!cfg->dict[i]->name) continue; fprintf(f,"%s\t",cfg->dict[i]->name); for(j=0;jdict[i]->nvalues;j++) if(cfg->dict[i]->value[j]) fprintf(f," %s",cfg->dict[i]->value[j]); //TODO: quote values with spaces. fprintf(f,"\n"); } } fclose(f); return 0; } void freecfg(struct Cfg *cfg) { int i,j; if(!cfg) return; for(i=0;inelements;i++) { if(cfg->dict[i]->value) { for(j=0;jdict[i]->nvalues;j++) if(cfg->dict[i]->value[j]) free(cfg->dict[i]->value[j]); free(cfg->dict[i]->value); } if(cfg->dict[i]->name) free(cfg->dict[i]->name); } free(cfg->dict); free(cfg); } struct Cfg *readcfg(const char *name) { struct Cfg *cfg; FILE *f; char tmp[MAXTOKENLEN]; char *s; int c; enum { START, NAME, VALUE, INQUOTE, WHITESPACE, COMMENT } state=START; if((f=fopen(name,"rb"))==NULL) return NULL; cfg=malloc(sizeof(struct Cfg)); cfg->nelements=0; s=tmp; while((c=fgetc(f))!=EOF) { /* Order of 'case' statements is important here! */ switch(state) { case START: if(c=='#') { state=COMMENT; break; } else if(!isspace(c)) { s=tmp; state=NAME; } else { break; } case NAME: if(isspace(c)) { struct Dict *tmp1=malloc(sizeof(struct Dict)); *s='\0'; tmp1->nvalues = 0; tmp1->value = NULL; tmp1->name = strdup(tmp); cfg_add_entry(cfg, tmp1); state=WHITESPACE; } else { *s++=c; if(s==(tmp+sizeof(tmp))) { /* internal buffer overflow */ freecfg(cfg); fclose(f); return NULL; } } break; case WHITESPACE: if(c=='\n') { state=START; break; } else { if(!isspace(c)) { s=tmp; state=VALUE; } else { break; } } case VALUE: if(c=='"') state=INQUOTE; else if(isspace(c)) { struct Dict *last=cfg->dict[cfg->nelements-1]; char **tmp1; int i; *s='\0'; tmp1=last->value; last->value=malloc((last->nvalues+1)*sizeof(char *)); if(tmp1) { for(i=0;invalues;i++) last->value[i]=tmp1[i]; free(tmp1); } last->value[last->nvalues]=strdup(tmp); last->nvalues++; if(c=='\n') state=START; else state=WHITESPACE; } else { *s++=c; if(s==(tmp+sizeof(tmp))) { /* internal buffer overflow */ freecfg(cfg); fclose(f); return NULL; } } break; case INQUOTE: if(c=='"') { state=VALUE; } else { *s++=c; if(s==(tmp+sizeof(tmp))) { /* internal buffer overflow */ freecfg(cfg); fclose(f); return NULL; } } break; case COMMENT: if(c=='\n') state=START; break; } } sortcfg(cfg); fclose(f); return cfg; } /** * Sorts cfg. * Should be called after each modification * before attempting to retrieve any data. */ void sortcfg (struct Cfg *cfg) { qsort((void *) cfg->dict, cfg->nelements, sizeof(struct Dict *), cfg_entry_cmp); } /** * Adds new cfg entry to the end of the dictionary. * you need to call sortcfg() before it could be * really used. */ void cfg_add_entry (struct Cfg *cfg, struct Dict *d) { if(cfg->nelements) { struct Dict **last=cfg->dict; cfg->dict=malloc(sizeof(struct Dict *)*(cfg->nelements+1)); memcpy(cfg->dict,last,sizeof(struct Dict *)*cfg->nelements); cfg->dict[cfg->nelements]=d; cfg->nelements++; free(last); } else { cfg->dict = malloc(sizeof(struct Dict *)); cfg->dict[0] = d; cfg->nelements = 1; } } /** * Adds entry with given name and list of values. * list should be terminated with NULL and contain * only const char pointers. */ void cfg_new_entry(struct Cfg *cfg, const char *name, ...) { int n; va_list ap; struct Dict *tmp=malloc(sizeof(struct Dict)); tmp->name = strdup(name); va_start(ap,name); n=0; while(va_arg(ap, const char *)) n++; va_end(ap); tmp->nvalues = n; if(n) { int i; va_start(ap,name); tmp->value = malloc(n*sizeof(char *)); for(i=0;ivalue[i] = strdup(va_arg(ap, const char *)); va_end(ap); } else { tmp->value = NULL; } cfg_add_entry(cfg, tmp); } void cfg_new_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v) { char tmp[80]; sprintf(tmp,"%lu",v); cfg_new_entry(cfg, name, tmp, NULL); } /** * add long extended to 'w' chars, with added trailing zeros. * * @param v - field value * @param w - field width */ void cfg_new_fmt_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v, int w) { char tmp[80]; sprintf(tmp,"%0*lu",w, v); cfg_new_entry(cfg, name, tmp, NULL); } struct Cfg *newcfg () { struct Cfg *res=malloc(sizeof(struct Cfg)); res->nelements = 0; return res; } simpleproxy-v.3.5/cfg.h000066400000000000000000000030651271302427700151410ustar00rootroot00000000000000/* * $Id$ * * Vadim Zaliva * http://www.crocodile.org/ * * Copyright (C) 1999 Vadim Zaliva * * 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. * */ struct Dict { char *name; char **value; int nvalues; }; struct Cfg { struct Dict **dict; int nelements ; }; struct Cfg *readcfg (const char *filename); int writecfg (const char * filename, struct Cfg *); char *cfgfind (const char *,struct Cfg *, int offset); void freecfg (struct Cfg *); struct Cfg *newcfg (); void sortcfg (struct Cfg *); void cfg_add_entry (struct Cfg *, struct Dict *); /* convinience functions */ void cfg_new_entry (struct Cfg *cfg, const char *name, ...); void cfg_new_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v); void cfg_new_fmt_ulong_entry (struct Cfg *cfg, const char *name, unsigned long v, int w); simpleproxy-v.3.5/configure000077500000000000000000001534501271302427700161440ustar00rootroot00000000000000#! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated automatically using autoconf version 2.13 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. # # This configure script is free software; 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then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_dummy="$PATH" for ac_dir in $ac_dummy; do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then ac_cv_prog_CC="gcc" break fi done IFS="$ac_save_ifs" fi fi CC="$ac_cv_prog_CC" if test -n "$CC"; then echo "$ac_t""$CC" 1>&6 else echo "$ac_t""no" 1>&6 fi if test -z "$CC"; then # Extract the first word of "cc", so it can be a program name with args. set dummy cc; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 echo "configure:559: checking for $ac_word" >&5 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_prog_rejected=no ac_dummy="$PATH" for ac_dir in $ac_dummy; do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then ac_prog_rejected=yes continue fi ac_cv_prog_CC="cc" break fi done IFS="$ac_save_ifs" if test $ac_prog_rejected = yes; then # We found a bogon in the path, so make sure we never use it. set dummy $ac_cv_prog_CC shift if test $# -gt 0; then # We chose a different compiler from the bogus one. # However, it has the same basename, so the bogon will be chosen # first if we set CC to just the basename; use the full file name. shift set dummy "$ac_dir/$ac_word" "$@" shift ac_cv_prog_CC="$@" fi fi fi fi CC="$ac_cv_prog_CC" if test -n "$CC"; then echo "$ac_t""$CC" 1>&6 else echo "$ac_t""no" 1>&6 fi if test -z "$CC"; then case "`uname -s`" in *win32* | *WIN32*) # Extract the first word of "cl", so it can be a program name with args. set dummy cl; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 echo "configure:610: checking for $ac_word" >&5 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$CC"; then ac_cv_prog_CC="$CC" # Let the user override the test. else IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_dummy="$PATH" for ac_dir in $ac_dummy; do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then ac_cv_prog_CC="cl" break fi done IFS="$ac_save_ifs" fi fi CC="$ac_cv_prog_CC" if test -n "$CC"; then echo "$ac_t""$CC" 1>&6 else echo "$ac_t""no" 1>&6 fi ;; esac fi test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; } fi echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6 echo "configure:642: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5 ac_ext=c # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. ac_cpp='$CPP $CPPFLAGS' ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' cross_compiling=$ac_cv_prog_cc_cross cat > conftest.$ac_ext << EOF #line 653 "configure" #include "confdefs.h" main(){return(0);} EOF if { (eval echo configure:658: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then ac_cv_prog_cc_works=yes # If we can't run a trivial program, we are probably using a cross compiler. if (./conftest; exit) 2>/dev/null; then ac_cv_prog_cc_cross=no else ac_cv_prog_cc_cross=yes fi else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 ac_cv_prog_cc_works=no fi rm -fr conftest* ac_ext=c # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options. ac_cpp='$CPP $CPPFLAGS' ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5' ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5' cross_compiling=$ac_cv_prog_cc_cross echo "$ac_t""$ac_cv_prog_cc_works" 1>&6 if test $ac_cv_prog_cc_works = no; then { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; } fi echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 echo "configure:684: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6 cross_compiling=$ac_cv_prog_cc_cross echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6 echo "configure:689: checking whether we are using GNU C" >&5 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then ac_cv_prog_gcc=yes else ac_cv_prog_gcc=no fi fi echo "$ac_t""$ac_cv_prog_gcc" 1>&6 if test $ac_cv_prog_gcc = yes; then GCC=yes else GCC= fi ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" CFLAGS= echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6 echo "configure:717: checking whether ${CC-cc} accepts -g" >&5 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else echo 'void f(){}' > conftest.c if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then ac_cv_prog_cc_g=yes else ac_cv_prog_cc_g=no fi rm -f conftest* fi echo "$ac_t""$ac_cv_prog_cc_g" 1>&6 if test "$ac_test_CFLAGS" = set; then CFLAGS="$ac_save_CFLAGS" elif test $ac_cv_prog_cc_g = yes; then if test "$GCC" = yes; then CFLAGS="-g -O2" else CFLAGS="-g" fi else if test "$GCC" = yes; then CFLAGS="-O2" else CFLAGS= fi fi ac_aux_dir= for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do if test -f $ac_dir/install-sh; then ac_aux_dir=$ac_dir ac_install_sh="$ac_aux_dir/install-sh -c" break elif test -f $ac_dir/install.sh; then ac_aux_dir=$ac_dir ac_install_sh="$ac_aux_dir/install.sh -c" break fi done if test -z "$ac_aux_dir"; then { echo "configure: error: can not find install-sh or install.sh in $srcdir $srcdir/.. $srcdir/../.." 1>&2; exit 1; } fi ac_config_guess=$ac_aux_dir/config.guess ac_config_sub=$ac_aux_dir/config.sub ac_configure=$ac_aux_dir/configure # This should be Cygnus configure. # Find a good install program. We prefer a C program (faster), # so one script is as good as another. But avoid the broken or # incompatible versions: # SysV /etc/install, /usr/sbin/install # SunOS /usr/etc/install # IRIX /sbin/install # AIX /bin/install # AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag # AFS /usr/afsws/bin/install, which mishandles nonexistent args # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" # ./install, which can be erroneously created by make from ./install.sh. echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6 echo "configure:779: checking for a BSD compatible install" >&5 if test -z "$INSTALL"; then if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":" for ac_dir in $PATH; do # Account for people who put trailing slashes in PATH elements. case "$ac_dir/" in /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; *) # OSF1 and SCO ODT 3.0 have their own names for install. # Don't use installbsd from OSF since it installs stuff as root # by default. for ac_prog in ginstall scoinst install; do if test -f $ac_dir/$ac_prog; then if test $ac_prog = install && grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX install. It has an incompatible calling convention. : else ac_cv_path_install="$ac_dir/$ac_prog -c" break 2 fi fi done ;; esac done IFS="$ac_save_IFS" fi if test "${ac_cv_path_install+set}" = set; then INSTALL="$ac_cv_path_install" else # As a last resort, use the slow shell script. We don't cache a # path for INSTALL within a source directory, because that will # break other packages using the cache if that directory is # removed, or if the path is relative. INSTALL="$ac_install_sh" fi fi echo "$ac_t""$INSTALL" 1>&6 # Use test -z because SunOS4 sh mishandles braces in ${var-val}. # It thinks the first close brace ends the variable substitution. test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}' test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' # Extract the first word of "lint", so it can be a program name with args. set dummy lint; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 echo "configure:834: checking for $ac_word" >&5 if eval "test \"`echo '$''{'ac_cv_prog_LINT'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$LINT"; then ac_cv_prog_LINT="$LINT" # Let the user override the test. else IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":" ac_dummy="$PATH" for ac_dir in $ac_dummy; do test -z "$ac_dir" && ac_dir=. if test -f $ac_dir/$ac_word; then ac_cv_prog_LINT="" break fi done IFS="$ac_save_ifs" fi fi LINT="$ac_cv_prog_LINT" if test -n "$LINT"; then echo "$ac_t""$LINT" 1>&6 else echo "$ac_t""no" 1>&6 fi echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6 echo "configure:862: checking for gethostbyname in -lnsl" >&5 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'` if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else ac_save_LIBS="$LIBS" LIBS="-lnsl $LIBS" cat > conftest.$ac_ext <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then rm -rf conftest* eval "ac_cv_lib_$ac_lib_var=yes" else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* eval "ac_cv_lib_$ac_lib_var=no" fi rm -f conftest* LIBS="$ac_save_LIBS" fi if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then echo "$ac_t""yes" 1>&6 ac_tr_lib=HAVE_LIB`echo nsl | sed -e 's/[^a-zA-Z0-9_]/_/g' \ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` cat >> confdefs.h <&6 fi echo $ac_n "checking for connect in -lsocket""... $ac_c" 1>&6 echo "configure:909: checking for connect in -lsocket" >&5 ac_lib_var=`echo socket'_'connect | sed 'y%./+-%__p_%'` if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else ac_save_LIBS="$LIBS" LIBS="-lsocket $LIBS" cat > conftest.$ac_ext <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then rm -rf conftest* eval "ac_cv_lib_$ac_lib_var=yes" else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* eval "ac_cv_lib_$ac_lib_var=no" fi rm -f conftest* LIBS="$ac_save_LIBS" fi if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then echo "$ac_t""yes" 1>&6 ac_tr_lib=HAVE_LIB`echo socket | sed -e 's/[^a-zA-Z0-9_]/_/g' \ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` cat >> confdefs.h <&6 fi echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6 echo "configure:957: checking how to run the C preprocessor" >&5 # On Suns, sometimes $CPP names a directory. if test -n "$CPP" && test -d "$CPP"; then CPP= fi if test -z "$CPP"; then if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else # This must be in double quotes, not single quotes, because CPP may get # substituted into the Makefile and "${CC-cc}" will confuse make. 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AC_TYPE_SIGNAL AC_FUNC_VPRINTF AC_CHECK_FUNCS(syslog openlog closelog select socket strdup strerror strtol vsnprintf vsprintf) AC_OUTPUT(Makefile) simpleproxy-v.3.5/install-sh000077500000000000000000000127211271302427700162340ustar00rootroot00000000000000#! /bin/sh # # install - install a program, script, or datafile # This comes from X11R5 (mit/util/scripts/install.sh). # # Copyright 1991 by the Massachusetts Institute of Technology # # Permission to use, copy, modify, distribute, and sell this software and its # documentation for any purpose is hereby granted without fee, 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 M.I.T. not be used in advertising or # publicity pertaining to distribution of the software without specific, # written prior permission. M.I.T. makes no representations about the # suitability of this software for any purpose. It is provided "as is" # without express or implied warranty. # # 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. It can only install one file at a time, a restriction # shared with many OS's install programs. # set DOITPROG to echo to test this script # Don't use :- since 4.3BSD and earlier shells don't like it. doit="${DOITPROG-}" # put in absolute paths if you don't have them in your path; or use env. vars. mvprog="${MVPROG-mv}" cpprog="${CPPROG-cp}" chmodprog="${CHMODPROG-chmod}" chownprog="${CHOWNPROG-chown}" chgrpprog="${CHGRPPROG-chgrp}" stripprog="${STRIPPROG-strip}" rmprog="${RMPROG-rm}" mkdirprog="${MKDIRPROG-mkdir}" transformbasename="" transform_arg="" instcmd="$mvprog" chmodcmd="$chmodprog 0755" chowncmd="" chgrpcmd="" stripcmd="" rmcmd="$rmprog -f" mvcmd="$mvprog" src="" dst="" dir_arg="" while [ x"$1" != x ]; do case $1 in -c) instcmd="$cpprog" shift continue;; -d) dir_arg=true shift continue;; -m) chmodcmd="$chmodprog $2" shift shift continue;; -o) chowncmd="$chownprog $2" shift shift continue;; -g) chgrpcmd="$chgrpprog $2" shift shift continue;; -s) stripcmd="$stripprog" shift continue;; -t=*) transformarg=`echo $1 | sed 's/-t=//'` shift continue;; -b=*) transformbasename=`echo $1 | sed 's/-b=//'` shift continue;; *) if [ x"$src" = x ] then src=$1 else # this colon is to work around a 386BSD /bin/sh bug : dst=$1 fi shift continue;; esac done if [ x"$src" = x ] then echo "install: no input file specified" exit 1 else true fi if [ x"$dir_arg" != x ]; then dst=$src src="" if [ -d $dst ]; then instcmd=: else instcmd=mkdir fi else # Waiting for this to be detected by the "$instcmd $src $dsttmp" command # might cause directories to be created, which would be especially bad # if $src (and thus $dsttmp) contains '*'. if [ -f $src -o -d $src ] then true else echo "install: $src does not exist" exit 1 fi if [ x"$dst" = x ] then echo "install: no destination specified" exit 1 else true fi # If destination is a directory, append the input filename; if your system # does not like double slashes in filenames, you may need to add some logic if [ -d $dst ] then dst="$dst"/`basename $src` else true fi fi ## this sed command emulates the dirname command dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` # Make sure that the destination directory exists. # this part is taken from Noah Friedman's mkinstalldirs script # Skip lots of stat calls in the usual case. if [ ! -d "$dstdir" ]; then defaultIFS=' ' IFS="${IFS-${defaultIFS}}" oIFS="${IFS}" # Some sh's can't handle IFS=/ for some reason. IFS='%' set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'` IFS="${oIFS}" pathcomp='' while [ $# -ne 0 ] ; do pathcomp="${pathcomp}${1}" shift if [ ! -d "${pathcomp}" ] ; then $mkdirprog "${pathcomp}" else true fi pathcomp="${pathcomp}/" done fi if [ x"$dir_arg" != x ] then $doit $instcmd $dst && if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi && if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi else # If we're going to rename the final executable, determine the name now. if [ x"$transformarg" = x ] then dstfile=`basename $dst` else dstfile=`basename $dst $transformbasename | sed $transformarg`$transformbasename fi # don't allow the sed command to completely eliminate the filename if [ x"$dstfile" = x ] then dstfile=`basename $dst` else true fi # Make a temp file name in the proper directory. dsttmp=$dstdir/#inst.$$# # Move or copy the file name to the temp name $doit $instcmd $src $dsttmp && trap "rm -f ${dsttmp}" 0 && # and set any options; do chmod last to preserve setuid bits # If any of these fail, we abort the whole thing. If we want to # ignore errors from any of these, just make sure not to ignore # errors from the above "$doit $instcmd $src $dsttmp" command. if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && # Now rename the file to the real destination. $doit $rmcmd -f $dstdir/$dstfile && $doit $mvcmd $dsttmp $dstdir/$dstfile fi && exit 0 simpleproxy-v.3.5/mkinstalldirs000077500000000000000000000012441271302427700170340ustar00rootroot00000000000000#! /bin/sh # mkinstalldirs --- make directory hierarchy # Author: Noah Friedman # Created: 1993-05-16 # Public domain # $Id$ errstatus=0 for file do set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'` shift pathcomp= for d do pathcomp="$pathcomp$d" case "$pathcomp" in -* ) pathcomp=./$pathcomp ;; esac if test ! -d "$pathcomp"; then echo "mkdir $pathcomp" 1>&2 mkdir "$pathcomp" || lasterr=$? if test ! -d "$pathcomp"; then errstatus=$lasterr fi fi pathcomp="$pathcomp/" done done exit $errstatus # mkinstalldirs ends here simpleproxy-v.3.5/pop3users.txt000066400000000000000000000002011271302427700167220ustar00rootroot00000000000000# This file lists users whose requests will be forwarded # by simpleproxy(1) if it is started in POP3 mode. # guest pascal lord simpleproxy-v.3.5/sample.cfg000066400000000000000000000011411271302427700161640ustar00rootroot00000000000000# $Id$ #---------------------------------------------------------------- # Simpleproxy sample cfg file. # All values here could be overriden by command line options. #---------------------------------------------------------------- Verbose yes StartedFromInetd no Daemon no #pidfile /var/run/simpleproxy.pid #Pop3File pop3users.txt LocalHost :4321 RemoteHost some.host.com:1234 Strip8bit no #HTTPSProxyHost some.proxy.host.com:1234 simpleproxy-v.3.5/simpleproxy.c000066400000000000000000001145741271302427700170000ustar00rootroot00000000000000/* * $Id$ * --------------------------------------------------------------------- * * Simple proxy daemon * ==================== * * Authors: * -------- * Vadim Zaliva * Vlad Karpinsky * Vadim Tymchenko * Renzo Davoli (html probe & html basic authentication). * * Licence: * -------- * * Copyright (C) 1999 Vadim Zaliva * * 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. * */ /* #define DEBUG 1 */ #include #include #include #if HAVE_SYS_WAIT_H #include #endif #include #ifndef _WIN32 # include #endif #include #if HAVE_UNISTD_H #include #endif #include #include #include #include #include #include #if HAVE_SYS_FILIO_H # include #endif #if HAVE_STROPTS_H # include #endif #include #if HAVE_SYSLOG_H # include #endif #include #if HAVE_FCNTL_H #include #endif #if HAVE_TERMIO_H # include #endif #include #include #include #include #include #include #include "cfg.h" #ifndef nil # define nil NULL #endif #ifndef SAME # define SAME 0 #endif #define MBUFSIZ 8192 #define SELECT_TIMOEOUT_SEC 5 #define SELECT_TIMOEOUT_MSEC 0 static char *SIMPLEPROXY_VERSION = "simpleproxy v3.5 by lord@crocodile.org,vlad@noir.crocodile.org,verylong@noir.crocodile.org,renzo@cs.unibo.it"; static char *SIMPLEPROXY_USAGE = "simpleproxy -L <[host:]port> -R [-d] [-v] [-V] [-7] [-i] [-u] [-p PID file] [-P ] [-f cfgfile] [-t tracefile] [-D delay in sec.] [-S [-a :] ] [-A :]"; static char *PROXY_HEADER_FMT = "\r\nProxy-Authorization: Basic %s"; static char *PROXY_HEADER = "\r\nProxy-Authorization: Basic "; static char AUTHMSG[]= "HTTP/1.1 407 Proxy Authorization Required\r\n" "Proxy-Authenticate: Basic realm=\""; static char AUTHMSG2[]= "\"\r\n" "Content-Type: text/html\r\n" "\r\n" "\r\n" "407 Proxy Authorization Required\r\n" "\r\n" "

Proxy Authorization Required

\r\n" "Login and Password required\r\n" "
\r\nSimpleProxy\r\n" "\r\n"; struct lst_record { char *s; struct lst_record *next; }; static void daemon_start(void); static int writen(int fd, char *ptr, int nbytes); static void pass_all(int fd, int client); static int pass_out( int in, int out); static int pass_in( int in, int out, int isHtmlProbe,char *authHash); static int get_hostaddr(const char *name); static int readln(int fd, char *buf, int siz); static void firstword(char *str); static struct lst_record * load_pop3_list(const char *popfile); static int check_pop3_list(struct lst_record *lst, char *acc); static int pop3_login(int remotefd,int newsockfd); static int read_pop3_cmd(int s, char *buff, int max_buf, int strip); static void child_dead( int stat ); static void write_pid( char* filename ); static int process_remote(const char *rhost, int rportn,const char *client_name); static int open_remote(const char *rhost, int rportn,const char *client_name); static void logopen(void); static void logclose(void); static void logmsg(int, char *format, ...); static void ctrlc(int); static int https_connect(int remoteFd, const char *remoteHost, int remotePort); static int str2bool(char *s); static void parse_host_port(const char *src, char **h_ptr, int *p_ptr); static void replace_string(char **dst, const char*src); static void fatal(); static char *base64_encode(char *plaintext); static void trace(int fd, char *buf, int siz); static int isVerbose = 0; static int isDaemon = 0; static int isStripping = 0; static int isStartedFromInetd = 0; static int isUsingHTTPSAuth = 0; static int isHtmlProbe = 0; static long Delay = 0; static char *HTTPSProxyHost = nil; static int HTTPSProxyPort = -1; static char *HTTPSBasicAuthString = nil; static char *HTTPAuthHash = nil; static char *Tracefile = nil; static int SockFD = -1, SrcSockFD = -1, DstSockFD = -1; struct lst_record *POPList = nil; int main(int ac, char **av) { socklen_t clien; struct sockaddr_in cli_addr, serv_addr; int lportn = -1, rportn = -1; char *lhost = nil, *rhost = nil; struct hostent *hp; char *client_name; extern char *optarg; int c; int errflg = 0; char *cfgfile = nil; char *popfile = nil; static struct Cfg *cfg = nil; char *pidfile = nil; int rsp = 1; char *https_auth = nil; char *http_auth = nil; char *HTTPSAuthHash = nil; int len; char hbuf[NI_MAXHOST]; /* Check for the arguments, and overwrite values from cfg file */ while((c = getopt(ac, av, "iVv7dhuL:R:H:f:p:P:D:S:s:a:A:t:")) != -1) switch (c) { case 'v': isVerbose++; break; case 'i': isStartedFromInetd++; break; case 'd': isDaemon++; break; case 'u': isHtmlProbe++; break; case 'p': replace_string(&pidfile, optarg); break; case 'f': replace_string(&cfgfile, optarg); if(cfgfile) { if((cfg=readcfg(cfgfile))==nil) { logmsg(LOG_ERR,"Error reading cfg file."); return 1; } else { char *tmp; /* let's process cfg file. Will cnage options only if they were not set already*/ if (!isVerbose) isVerbose = str2bool(cfgfind("Verbose", cfg, 0)); if (!isStartedFromInetd) isStartedFromInetd = str2bool(cfgfind("StartedFromInetd",cfg, 0)); if (!isDaemon) isDaemon = str2bool(cfgfind("Daemon", cfg, 0)); if (!isStripping) isStripping = str2bool(cfgfind("Strip8bit", cfg, 0)); if (!isHtmlProbe) isHtmlProbe = str2bool(cfgfind("HtmlProbe", cfg, 0)); tmp = cfgfind("LocalPort", cfg, 0); if (tmp && lportn == -1) parse_host_port(tmp, nil, &lportn); tmp = cfgfind("RemotePort", cfg, 0); if (tmp && rportn == -1) parse_host_port(tmp, nil, &rportn); tmp = cfgfind("HTTPSProxyPort",cfg, 0); if (tmp && HTTPSProxyPort == -1) parse_host_port(tmp, nil, &HTTPSProxyPort); tmp = cfgfind("PIDFile", cfg, 0); if(tmp && !pidfile) replace_string(&pidfile, tmp); tmp = cfgfind("POP3File", cfg, 0); if(tmp && !popfile) replace_string(&popfile, tmp); tmp = cfgfind("LocalHost", cfg, 0); if(tmp && !rhost) parse_host_port(tmp, &lhost, &lportn); tmp = cfgfind("RemoteHost", cfg, 0); if(tmp && !rhost) parse_host_port(tmp, &rhost, &rportn); tmp = cfgfind("HTTPSProxyHost",cfg, 0); if(tmp && !HTTPSProxyHost) parse_host_port(tmp, &HTTPSProxyHost, &HTTPSProxyPort); tmp = cfgfind("TraceFile", cfg, 0); if(tmp && !Tracefile) replace_string(&Tracefile, tmp); tmp = cfgfind("https_auth", cfg, 0); if(tmp && !https_auth) { isUsingHTTPSAuth = 1; replace_string(&https_auth, tmp); } tmp = cfgfind("http_auth", cfg, 0); if(tmp && !http_auth) replace_string(&http_auth, tmp); freecfg(cfg); } } break; case 'L': parse_host_port(optarg, &lhost, &lportn); break; case 'P': replace_string(&popfile, optarg); break; case 'R': parse_host_port(optarg, &rhost, &rportn); break; case 'H': replace_string(&rhost, optarg); break; case 'D': Delay = atol(optarg); break; case '7': isStripping = 1; break; case 'S': parse_host_port(optarg, &HTTPSProxyHost, &HTTPSProxyPort); break; case 's': parse_host_port(optarg, nil, &HTTPSProxyPort); break; case 'V': fprintf(stderr, "%s\n", SIMPLEPROXY_VERSION); exit(0); case 'h': errflg++; // to make it print 'Usage:...' break; case 'a': if((HTTPSProxyHost == nil) && (HTTPSProxyPort == -1)) fprintf(stderr, "Warning! Proxy authorization (-a) meaningless without HTTPS parameters (-S)\n"); isUsingHTTPSAuth = 1; replace_string(&https_auth,optarg); break; case 'A': replace_string(&http_auth,optarg); break; case 't': replace_string(&Tracefile, optarg); break; default: errflg++; } /* let us check options compatibility and completness*/ if(isUsingHTTPSAuth) { HTTPSAuthHash = base64_encode(https_auth); HTTPSBasicAuthString = malloc(strlen(HTTPSAuthHash) + strlen(PROXY_HEADER_FMT)); sprintf(HTTPSBasicAuthString,PROXY_HEADER_FMT,HTTPSAuthHash); free(HTTPSAuthHash); } else { HTTPSBasicAuthString = ""; } if(http_auth) HTTPAuthHash = base64_encode(http_auth); if (isStartedFromInetd && lportn > 0) errflg++; if (!rhost || rportn <= 0 || (lportn <= 0 && !isStartedFromInetd) || (HTTPSProxyHost && HTTPSProxyPort <=0)) errflg++; /* Do some options post-processing */ if(isStartedFromInetd) isDaemon++; /* implies */ if(errflg) { (void)fprintf(stderr, "%s\n", SIMPLEPROXY_VERSION); (void)fprintf(stderr, "Usage:\n\t%s\n", SIMPLEPROXY_USAGE); exit(1); } logopen(); if(signal(SIGINT,ctrlc)==SIG_ERR) logmsg(LOG_ERR,"Error installing interrupt handler."); if(lportn <= 1024 && geteuid()!=0 && !isStartedFromInetd) { if(!isVerbose) { logopen(); isVerbose++; } logmsg(LOG_ERR,"You must be root to run SIMPLEPROXY on reserved port"); fatal(); } if (popfile) POPList = load_pop3_list(popfile); if (!isStartedFromInetd) { /* Let's become a daemon */ if(isDaemon) daemon_start(); if(pidfile) write_pid(pidfile); if((SockFD = socket(AF_INET,SOCK_STREAM,0)) < 0) { logmsg(LOG_ERR,"Error creating socket."); fatal(); } memset((void *)&serv_addr, 0, sizeof(serv_addr)); serv_addr.sin_family = AF_INET; serv_addr.sin_addr.s_addr = ((lhost && *lhost)? get_hostaddr(lhost): htonl(INADDR_ANY)); serv_addr.sin_port = htons(lportn); if (setsockopt(SockFD, SOL_SOCKET, SO_REUSEADDR, (void*)&rsp, sizeof(rsp))) logmsg(LOG_ERR,"Error setting socket options"); if (bind(SockFD, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) { logmsg(LOG_ERR,"Error binding socket."); fatal(); } logmsg(LOG_INFO,"Waiting for connections."); if (listen(SockFD,5) < 0) { logmsg(LOG_ERR,"Error listening socket: %s", strerror(errno)); fatal(); } while (1) { clien = sizeof(cli_addr); SrcSockFD = accept(SockFD,(struct sockaddr *)&cli_addr, &clien); if(SrcSockFD < 0) { if (errno == EINTR || errno == ECHILD) /* Interrupt after SIGCHLD */ continue; logmsg(LOG_ERR, "accept error - %s", strerror(errno)); fatal(); } signal(SIGCHLD, child_dead); switch (fork()) { case -1: /* fork error */ logmsg(LOG_ERR,"fork error - %s", strerror(errno)); break; case 0: /* Child */ if (getnameinfo((const struct sockaddr *) &cli_addr, len, hbuf, sizeof(hbuf), NULL, 0, 0) == 0) client_name = strdup(hbuf); else client_name = inet_ntoa(cli_addr.sin_addr); /* * I don't know is that a bug, but on Irix 6.2 parent * process will not be able to accept any new connection * if SockFD is closed here. Vlad */ /* (void)shutdown(SockFD,2); */ /* (void)close(SockFD); */ /* Process connection */ logmsg(LOG_NOTICE, "Connect from %s (%s:%d->%s:%d)", client_name, ((lhost && *lhost)? lhost: "ANY"), lportn, (rhost && *rhost)? rhost: "localhost", rportn); if (process_remote(rhost, rportn, client_name)) fatal(); logmsg(LOG_NOTICE, "Connect from %s (%s:%d->%s:%d) closed", client_name, ((lhost && *lhost)? lhost: "ANY"), lportn, (rhost && *rhost)? rhost: "localhost", rportn); shutdown(SrcSockFD, 2); close(SrcSockFD); SrcSockFD = -1; closelog(); return 0; // Exit default: /* Parent */ close(SrcSockFD); SrcSockFD = -1; } } } else { /* Started from inetd */ SrcSockFD = 0; // stdin logmsg(LOG_NOTICE, "Connect (inetd->%s:%d)", (rhost && *rhost)? rhost: "localhost", rportn); process_remote(rhost, rportn, "inetd"); logmsg(LOG_NOTICE, "Connect (inetd->%s:%d) closed", (rhost && *rhost)? rhost: "localhost", rportn); } return 0; } /* * Write "n" bytes to a descriptor. * Use in place of write() when fd is a stream socket. */ static int writen(int fd, char *ptr, int nbytes) { int nleft, nwritten; nleft = nbytes; while (nleft > 0) { nwritten = write(fd, ptr, nleft); if(nwritten <= 0) return(nwritten); /* error */ nleft -= nwritten; ptr += nwritten; } return(nbytes - nleft); } /* * Detach a daemon process from login session context. */ static void daemon_start(void) { /* Maybe I should do 2 forks here? */ if(fork()) exit(0); if(chdir("/")) {} /* supressing warn_unused_result */ umask(0); (void) close(0); (void) close(1); (void) close(2); (void) open("/", O_RDONLY); (void) dup2(0, 1); (void) dup2(0, 2); setsid(); } void pass_all( int fd, int client ) { fd_set in; struct timeval tv; int nsock, retval; nsock = ((fd > client)? fd: client) + 1; while(1) { FD_ZERO(&in); FD_SET(fd, &in); FD_SET(client, &in); tv.tv_sec = SELECT_TIMOEOUT_SEC; tv.tv_usec = SELECT_TIMOEOUT_MSEC; retval = select(nsock, &in, nil, nil, &tv); switch (retval) { case 0 : /* Nothing to receive */ break; case -1: /* Error occured */ logmsg(LOG_ERR, "i/o error - %s", strerror(errno)); return; default: if(FD_ISSET( fd, &in)) retval = pass_out(fd, client); else if(FD_ISSET( client, &in)) retval = pass_in(client, fd, isHtmlProbe, HTTPAuthHash); else retval = -1; if( retval < 0) return; if(Delay > 0) sleep(Delay); } } } static int get_hostaddr(const char *name) { struct hostent *he; int res = -1; int a1,a2,a3,a4; if (sscanf(name,"%d.%d.%d.%d",&a1,&a2,&a3,&a4) == 4) res = inet_addr(name); else { he = gethostbyname(name); if (he) memcpy(&res , he->h_addr , he->h_length); } return res; } /* credit: some code for html probe has been taken from dsniff (renzo davoli)*/ static int strrindex (const char *s, int c, int pos) { if (pos >= 0) { pos--; while (pos >= 0 && s[pos] != c) pos--; } return pos; } static int is_display_uri(char *uri) { static char *good_prefixes[] = { NULL }; static char *good_suffixes[] = { ".html", ".htm", "/", ".shtml", ".cgi", ".asp", ".php3", ".txt",".pdf", ".xml", ".asc", NULL }; #ifdef INSEARCH static char *good_infixes[] = { ".cgi", ".asp", ".php3", NULL }; #endif int len, slen, pos; char **pp, *p; /* printf("is_display_uri %s\n",uri);*/ /* Get URI length, without QUERY_INFO */ if ((p = strchr(uri, '?')) != NULL) { len = p - uri; } /* Get URI length, without TAG */ else if ((p = strchr(uri, '#')) != NULL) { len = p - uri; } else { /* no '?', no '#', maybe dir */ len = strlen(uri); pos=strrindex(uri,'/',len); if (pos >= 0) { if (strchr(&uri[pos+1],'.') == NULL && strchr(&uri[pos+1],'=') == NULL && strchr(&uri[pos+1],'&') == NULL) return 1; } } for (pp = good_suffixes; *pp != NULL; pp++) { if (len < (slen = strlen(*pp))) continue; if (strncasecmp(&uri[len - slen], *pp, slen) == 0) return (1); } for (pp = good_prefixes; *pp != NULL; pp++) { if (len < (slen = strlen(*pp))) continue; if (strncasecmp(uri, *pp, slen) == 0) return (1); } #ifdef INSEARCH for (pp = good_infixes; *pp != NULL; pp++) { for (pos = len; pos > (slen = strlen(*pp)); pos = strrindex(uri,'/',pos)) { if (strncasecmp(&uri[pos - slen], *pp, slen) == 0) return (1); } } #endif return (0); } static char *strxdup(const char *s, size_t n) { char *result=malloc(n+1); if (result != NULL) { memcpy(result,s,n); result[n]=0; } return result; } static int process_http_request(char *data, int len) { char *uri, *enduri; data[len]=0; //printf("process_http_request(%d)\n%s\nEND\n",getpid(),data); if (strncmp(data, "GET ", 4)==0) { uri = data+4; if ((enduri=strchr(uri,' ')) != NULL) { uri=strxdup(uri,(size_t)(enduri-uri)); //printf("uri %s\n",uri); if (is_display_uri(uri)) { printf("%s\n",uri); fflush(stdout); } free(uri); } } return 0; } static int pass_out( int in, int out) { int nread; char buff[MBUFSIZ]; if ((nread = readln(in, buff,MBUFSIZ)) <= 0) return -1; else { if (isStripping) { char *bufp; for (bufp = buff+nread-1; bufp >= buff; bufp--) *bufp = *bufp&0177; } if(writen(out, buff, nread) != nread) { logmsg(LOG_ERR,"write error"); return -1; } } return 0; } static int auth_check (char *buf, int len, char *http_authhash) { char *match; if ((match=strstr(buf,PROXY_HEADER)) != NULL) { int authlen=strlen(PROXY_HEADER)+strlen(http_authhash); if (((match - buf)-authlen) <= len) { if (strncmp(match+strlen(PROXY_HEADER),http_authhash,strlen(http_authhash))==0 && (*(match + authlen) == '\r' || *(match + authlen) == '\n')) { memmove(match,match+authlen,(match-buf)-authlen); return(len-authlen); } else return 0; } else return 0; } else return 0; } static int pass_in( int in, int out , int htmlProbe, char *http_authhash) { int nread; static char *buff=NULL; static int size=0; static int len=0; /* printf("HASH %s|=== %d\n",http_authhash,getpid()); */ if ((size - len) == 0) { if (size==0) size=MBUFSIZ; else size *= 2; buff = realloc(buff,size+1); if (!buff) return -1; } if ((nread = readln(in, buff+len, size-len)) <= 0) return -1; { char *pos; len+=nread; buff[len]=0; /* printf("R %d %d ==%s==\n",nread,len,buff); */ if (htmlProbe || http_authhash != NULL) { /* http basic parsing (allowing persistent connections and pipelining) */ while ((pos=strstr(buff,"\r\n\r\n")) != NULL) { int nout; nout=nread=(pos-buff)+4; /* printf("C %d %d ==%s==\n",nread,len,buff); */ if (isStripping) { char *bufp; for (bufp = buff+nread-1; bufp >= buff; bufp--) *bufp = *bufp&0177; } /* authentication management */ if (http_authhash != NULL && (nout = auth_check(buff,nread,http_authhash)) == 0) { writen(in,AUTHMSG,sizeof(AUTHMSG)); writen(in,"SimpleProxy",11); writen(in,AUTHMSG2,sizeof(AUTHMSG2)); return -1; } else { if(writen(out, buff, nout) != nout) { logmsg(LOG_ERR,"write error"); return -1; } /* probe: display on stdout significant URLs */ if (htmlProbe) process_http_request(buff, nout); } len -= nread; if (len>0) memmove(buff,buff+nread,len); else *buff=0; } } else { if (isStripping) { char *bufp; for (bufp = buff+nread-1; bufp >= buff; bufp--) *bufp = *bufp&0177; } if(writen(out, buff, len) != len) { logmsg(LOG_ERR,"write error"); return -1; } len -= nread; *buff=0; } } return 0; } void child_dead( int stat ) { while(waitpid( -1, nil, WNOHANG ) > 0); signal( SIGCHLD, child_dead ); } void parse_host_port(const char *src, char ** h_ptr, int *p_ptr) { if(src) { struct servent *se; /* Look for ':' separator */ const char *tmp = strrchr(src, ':'); if (tmp) { if (h_ptr) { replace_string(h_ptr, src); /* This looks like host:port syntax */ *((*h_ptr) + (tmp - src)) = '\0'; } tmp++; } else tmp = src; /* to compensate future ++; */ *p_ptr = (isdigit(*tmp))? atoi(tmp): (((se = getservbyname(tmp, "tcp")) == nil)? -1: ntohs(se->s_port)); } } void write_pid( char* filename ) { FILE *f; if((f=fopen(filename,"w"))==nil) { logmsg(LOG_WARNING,"Can't open file '%s' to write PID",filename); return; } fprintf( f,"%d",getpid()); fclose( f ); return; } /** * Load list of allowed POP3 accounts from external file * One per line */ static struct lst_record *load_pop3_list(const char *popfile) { FILE *f; char str[2048]; struct lst_record *first = nil; struct lst_record *last = nil; if((f=fopen(popfile,"r"))==nil) { logmsg(LOG_ERR,"Can't open POP3 file: %s",popfile); return nil; } while((str==fgets(str,2040,f))) { if(*str=='#') continue; /* comment */ firstword(str); if(*str=='\0') continue; logmsg(LOG_INFO,"Adding '%s' to POP3 users list",str); if(first==nil) { first=(struct lst_record *)malloc(sizeof(struct lst_record)); last=first; } else { last->next=(struct lst_record *)malloc(sizeof(struct lst_record)); last=last->next; } last->s=strdup(str); last->next=nil; } fclose(f); return first; } /** * Check if given account is OK to proxy */ static int check_pop3_list(struct lst_record *lst, char *acc) { while (lst) { if(strcmp(lst->s, acc) == 0) return 1; /* found */ else lst = lst->next; } return 0; } static void firstword(char *s) { s=strpbrk(s,"\n\t\r "); if(s) *s='\0'; } static int readln(int fd, char *buf, int siz) { int nread; nread = read(fd, buf, siz); if(nread <= 0) { if(nread < 0) logmsg(LOG_ERR,"read error"); return -1; } else { if (Tracefile) { // do tracing; trace(fd, buf, nread); } return nread; } } /** * . reads single POP3 command from socket. * . strips \r and \n at the end * . returns number of chars left or -1 in case of read error. */ static int read_pop3_cmd(int s, char *buff, int max_buf, int strip) { int n; if((n=readln(s,buff,max_buf))<=0) return -1; /* read error */ do { buff[n--]='\0'; } while((buff[n]=='\r' || buff[n]=='\n') && n>=0 && strip); return n; } /* * Pass USER command to remote end only if user is in the list * * See RFC1725 for details. */ static int pop3_login(int server,int user) { static char errmsg0[]={"-ERR Not allowed by proxy\r\n" }; static char errmsg1[]={"-ERR Can't get your user name\r\n"}; static char errmsg2[]={"-ERR USER or QUIT command expected\r\n" }; static char errmsg3[]={"-ERR PASS or QUIT command expected\r\n" }; char buff[MBUFSIZ]; char *s; /* read +OK from server */ if(readln(server,buff,MBUFSIZ)<=0) return 1; /* read error */ if(strncmp(buff,"+OK",3) !=0) return 1; /* server is not OK */ /* Send client our OK */ writen(user, "+OK ",4); writen(user, SIMPLEPROXY_VERSION, strlen(SIMPLEPROXY_VERSION)); writen(user, "\r\n",2); while(1) { /* read cmd from client */ if(read_pop3_cmd(user, buff, MBUFSIZ, 1) <= 0) return 1; if(strncmp(buff,"QUIT ",4) ==SAME) return 1; if(strncmp(buff,"USER ",5) !=SAME) { /* first command is not USER */ writen(user,errmsg2,strlen(errmsg2)); /* Send error to client */ continue; } /* get user name */ s=strdup(buff+5); firstword(s); if(*s == '\0') { /* invalid user name */ free(s); writen(user,errmsg1,strlen(errmsg1)); /* Send error to client */ continue; } /* Search user in access list */ if(check_pop3_list(POPList, s) == 0) { /* user not found */ free(s); writen(user,errmsg0,strlen(errmsg0)); /* Send error to client */ continue; } /* forward USER command to server */ writen(server,buff,strlen(buff)); writen(server,"\r\n",2); /* Get server response to USER */ if(read_pop3_cmd(server, buff, MBUFSIZ,0)<=0) return 1; /* read error */ /* forward server response to client */ writen(user,buff,strlen(buff)); if(strncmp(buff,"+OK",3) !=SAME) continue; /* USER is not OK */ while(1) { if(read_pop3_cmd(user, buff, MBUFSIZ, 0)<=0) return 1; if(strncmp(buff,"QUIT ",4) ==SAME) return 1; if(strncmp(buff,"PASS ",5) == SAME) break; /* second command not PASS */ writen(user,errmsg3,strlen(errmsg3)); /* Send error to client */ continue; } /* forward PASS command to server */ writen(server,buff,strlen(buff)); /* read pass response */ if(read_pop3_cmd(server, buff, MBUFSIZ, 0)<=0) return 1; /* read error */ writen(user,buff,strlen(buff)); /* forward server response to client */ if(strncmp(buff,"+OK",3) == SAME) return 0; /* ok */ } /* NOTREACHED */ } int process_remote(const char *dest_host, int dest_port, const char *client_name) { DstSockFD = open_remote(dest_host, dest_port, client_name); if (DstSockFD == -1) return -1; if (POPList && /* Doing POP3 proxy */ pop3_login(DstSockFD, SrcSockFD)) { logmsg(LOG_ERR,"POP3 login failed for %s.", client_name); return -1; } pass_all(DstSockFD, SrcSockFD); shutdown(DstSockFD, 2); close(DstSockFD); DstSockFD = -1; return 0; } int open_remote(const char *rhost, int rportn, const char *src_name) { const char *dest_host; int dest_port; struct sockaddr_in remote_addr; int DstSockFD; if (HTTPSProxyHost) { dest_host = HTTPSProxyHost; dest_port = HTTPSProxyPort; } else { dest_host = rhost; dest_port = rportn; } if (!(dest_host && *dest_host)) dest_host = "127.0.0.1"; if ((DstSockFD = socket(AF_INET, SOCK_STREAM, 0)) == -1) { logmsg(LOG_ERR,"Can't create socket - %s ", strerror(errno)); return -1; } remote_addr.sin_family = AF_INET; remote_addr.sin_port = htons(dest_port); remote_addr.sin_addr.s_addr = get_hostaddr(dest_host); if (remote_addr.sin_addr.s_addr == -1) { logmsg(LOG_ERR,"Unknown host %s", dest_host); return -1; } if (connect(DstSockFD, (struct sockaddr *) &remote_addr, sizeof(remote_addr))) { logmsg(LOG_ERR,"connect error to %s:%d - %s", dest_host, dest_port, strerror(errno)); return -1; } if (HTTPSProxyHost && https_connect(DstSockFD, rhost, rportn)) return -1; return DstSockFD; } static int https_connect(int DstSockFD, const char *remoteHost, int remotePort) { char buff[MBUFSIZ]; char *s; long n; /* prepare command and connect to remote side */ sprintf(buff, "CONNECT %s:%i HTTP/1.0\nUser-agent: %s%s\r\n\r\n", remoteHost, remotePort, SIMPLEPROXY_VERSION,HTTPSBasicAuthString); n = strlen(buff); if (writen(DstSockFD, buff, n) != n) { logmsg(LOG_ERR, "write error - %s", strerror(errno)); return -1; /* write error */ } /* reading response from the server */ if (readln(DstSockFD,buff,MBUFSIZ) <= 0) { logmsg(LOG_ERR,"read error - %s", strerror(errno)); return -1; /* read error */ } /* Format of HTTPS proxy responce must be: */ if(!(s = strchr(buff, ' '))) return -1; if((n = strtol(s, &s, 10)) != 200) { logmsg(LOG_ERR,"error in connect through HTTPS proxy. Proxy responded:\n %s", buff); return -1; } return 0; /* ok */ } static void logopen(void) { if(isVerbose & isDaemon) { #if HAVE_OPENLOG openlog("simpleproxy", LOG_PID| LOG_CONS|LOG_NOWAIT, LOG_USER); #else log(LOG_WARNING,"Compiled without syslog. Syslog can't be used."); #endif } } static void logclose(void) { if(isVerbose && isDaemon) { #if HAVE_CLOSELOG closelog(); #endif } } /** * This function should be used as central logging facility. * 'type' argument should be one of following: * * LOG_EMERG system is unusable * LOG_ALERT action must be taken immediately * LOG_CRIT critical conditions * LOG_ERR error conditions * LOG_WARNING warning conditions * LOG_NOTICE normal but significant condition * LOG_INFO informational * LOG_DEBUG debug-level messages */ static void logmsg(int type, char *format, ...) { #ifndef DEBUG if(type==LOG_DEBUG) return; #endif if(isVerbose) { va_list ap; va_start(ap, format); if(isDaemon) { char buffer[MBUFSIZ]; #if HAVE_VSNPRINTF (void)vsnprintf(buffer, MBUFSIZ, format, ap); #else # if HAVE_VSPRINTF # ifndef SGI # warning "Using VSPRINTF. Buffer overflow could happen!" # endif /* SGI */ (void)vsprintf(buffer, format, ap); # else # error "Your standard libabry have neither vsnprintf nor vsprintf defined. One of them is reqired!" # endif #endif #if HAVE_SYSLOG syslog(type, "%s", buffer); #endif } else { (void) fprintf(stderr, "simpleproxy[%d]:", (int)getpid()); (void) vfprintf(stderr, format, ap); (void) fprintf(stderr, "\n"); } va_end(ap); } } static void ctrlc(int s) { logmsg(LOG_INFO,"Interrupted... Shutting down connections"); if(SockFD !=-1) { /* (void)shutdown(SockFD,2); */ (void)close(SockFD ); } if(SrcSockFD !=-1) { /* (void)shutdown(SrcSockFD,2); */ close(SrcSockFD); } if(DstSockFD !=-1) { /* (void)shutdown(DstSockFD,2); */ close(DstSockFD ); } /* system V style. */ /* if(signal(SIGINT,ctrlc)==SIG_ERR) logmsg(LOG_INFO,"Error installing interrupt handler."); */ exit(1); } /** * Returns 1 if string could be interpreted as boolean TRUE in cfg. * otherwise returns 0. */ int str2bool(char *s) { if(s==nil) return 0; else return !(strcasecmp(s,"yes") && strcasecmp(s,"true") && strcasecmp(s,"ok") && strcasecmp(s,"oui") && strcasecmp(s,"1") ); } void replace_string(char **dst, const char *src) { if(dst) { if(*dst) free(*dst); *dst = (src)? strdup(src): nil; } } void fatal() { if (SockFD != -1) close(SockFD); if (SrcSockFD != -1) close(SrcSockFD); if (DstSockFD != -1) close(DstSockFD); logclose(); exit(1); } static char *base64_encode(char *plaintext) { int i; unsigned char dtable[64]; char *cryptext = nil; char *ogroup; /* Fill dtable with base 64 character encodings. */ for (i = 0; i < 26; i++) { dtable[i] = 'A' + i; dtable[26 + i] = 'a' + i; } for (i = 0; i < 10; i++) { dtable[52 + i] = '0' + i; } dtable[62] = '+'; dtable[63] = '/'; cryptext = malloc(strlen(plaintext)*2); ogroup=cryptext; while (*plaintext != 0) { unsigned char igroup[3]; int n; igroup[0] = igroup[1] = igroup[2] = 0; for (n = 0; n < 3; n++) { if(*plaintext != 0) igroup[n]=*plaintext++; else break; } if (n > 0) { ogroup[0] = dtable[igroup[0] >> 2]; ogroup[1] = dtable[((igroup[0] & 3) << 4) | (igroup[1] >> 4)]; ogroup[2] = dtable[((igroup[1] & 0xF) << 2) | (igroup[2] >> 6)]; ogroup[3] = dtable[igroup[2] & 0x3F]; /* Replace characters in output with "=" pad characters if fewer than three characters were available in the input stream. */ if (n < 3) { ogroup[3] = '='; if (n < 2) { ogroup[2] = '='; } } ogroup += 4; } } *ogroup = '\0'; return cryptext; } static void trace(int fd, char *buf, int siz) { char peer_name[NI_MAXHOST+16]; /* 16 bytes from column and port number */ char trace_header[256]; int trace_header_len; struct sockaddr_in peer_addr; socklen_t peer_addr_len = sizeof(peer_addr); struct hostent *peer_host; ssize_t unused_bytes_written; int tfd = open(Tracefile, O_CREAT | O_WRONLY| O_APPEND, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); if(tfd < 0) { logmsg(LOG_ERR,"Tracing is disabled, can't create/open trace file - %s", strerror(errno)); free(Tracefile); Tracefile = nil; } else { if(getpeername(fd, (struct sockaddr *)&peer_addr, &peer_addr_len) == 0) { char hbuf[NI_MAXHOST]; char *client_host_name; if(getnameinfo((const struct sockaddr *) &peer_addr, peer_addr_len, hbuf, sizeof(hbuf), NULL, 0, 0) == 0) client_host_name = hbuf; else client_host_name = inet_ntoa(peer_addr.sin_addr); snprintf(peer_name, sizeof(peer_name) - 1, "%s:%i", client_host_name, ntohs(peer_addr.sin_port)); } else strcpy(peer_name, "unknown source"); trace_header_len = snprintf(trace_header, sizeof(trace_header) - 1, "\n---------------- Read from: %s ---------------\n", peer_name); /* TODO: check actual return value and log error if needed */ unused_bytes_written = write(tfd, trace_header, (trace_header_len < sizeof(trace_header) - 1)? trace_header_len: (sizeof(trace_header) - 1)); unused_bytes_written = write(tfd, buf, siz); close(tfd); } } simpleproxy-v.3.5/simpleproxy.man000066400000000000000000000057741271302427700173320ustar00rootroot00000000000000.TH SIMPLEPROXY 1 "Version 3.5" .ds ]W November 2003 .SH NAME simpleproxy \- Simple tcp socket proxy .SH SYNOPSIS .ta 6n \fBsimpleproxy\fP [-7] [-v] [-V] [-d] [-i] [-u] -P <\fIPOP3 users file\fP> -L [<\fIlocal host\fP>:]<\fIlocal port\fP> -R <\fIremote host\fP>:<\fIremote port\fP> [-S <\fIproxy host\fP>:<\fIproxy port\fP>] .br .SH DESCRIPTION The .I simpleproxy program acts as a simple tcp proxy. It opens listening socket on local machine and forwards any connection to the remote host. .SH OPTIONS .PP .I simpleproxy\fP accepts following options: .TP 8 .B \-V Version information. .TP 8 .B \-v Makes \fIsimpleproxy\fP to write activity information to \fIsyslog\fP or \fIstderr\fP. .TP 8 .B \-7 Makes \fIsimpleproxy\fP to strip 8th bit. .TP 8 .B \-i Use this flag when starting \fIsimpleproxy\fP from INETD. .TP 8 .B \-d By default \fIsimpleproxy\fP does not detach itself from control terminal and writes all messages to \fIstderr\fP. This option will detach it from terminal and make it write messages to \fIsyslog\fP. .TP 8 .B \-L [<\fIlocal host\fP>:]<\fIlocal port\fP> Local host and port name or number to bind for listening. Host name is optional. .TP 8 .B \-R <\fIremote host\fP>:<\fIremote port\fP> Remote host and port name or number .TP 8 .B \-P \fP<\fIPOP3 users list\fP> If specified, simpleproxy will load list of users from the (one per line). After this it will be forwarding POP3 sessions only if client trying to authenificate as this user. .TP 8 .B \-S <\fIproxy host\fP>:<\fIproxy port\fP> HTTPS proxy server host and port name or number. .TP 8 .B \-a <\fIHTTPS Auth User\fP>:<\fIHTTPS Auth Password\fP> Authenticate to the HTTPS proxy server with the given userid and password. This option performs BASIC HTTP authentication as specified in RFC 2617. Used only in conjunction with -S. .TP 8 .B \-A <\fIHTTP Auth User\fP>:<\fIHTTP Auth Password\fP> Requires HTTP proxy authentication. Client browser must supply username and password to use this proxy. This option performs BASIC HTTP authentication as specified in RFC 2617. .TP 8 .B \-u URLs of visited pages are emitted on stdout. It is used for logging or for remote lecturing, if the output is redirected to a remote command that change a dynamic web page, it is possible to synchronize all the learner web browsers to the same page visited by the instructor. (see the "simple remote lecturing" project on sourceforge). .TP 8 .B \-t <\fItrace file\fP> If specified, simpleproxy will dump all data that passes through connection to the specified file. .SH BUGS\ \ \ \ Only \fItcp\fP ports are supported. .TP8 .PP .SH SEE ALSO .PP inetd(1M), services(4), http://www.crocodile.org/software.html .SH AUTHOR .PP Vadim Zaliva , Vladimir Karpinsky Vadim Tymchenko Renzo Davoli .SH CONTRIBUTORS .PP Pavel Roskin , Cedric Tefft Christophe Bothamy Ulf Harnhammar simpleproxy-v.3.5/simpleproxy.spec000066400000000000000000000013731271302427700175000ustar00rootroot00000000000000Name: simpleproxy Summary: Simple TCP/IP proxy. Packager: Vlad Karpinsky Url: https://github.com/vzaliva/simpleproxy Version: 3.5 Release: 1 Copyright: Vadim Zaliva , Vlad Karpinsky , Vadim Tymchenko Group: Daemons Source: https://github.com/vzaliva/simpleproxy/archive/v3.5.tar.gz BuildRoot: /tmp/simpleproxy %description Simple TCP/IP proxy. Also provides simple POP3 pre-auth. Can use HTTPs proxy to traverse firewalls. %prep rm -rf $RPM_BUILD_ROOT %setup %build ./configure --prefix=$RPM_BUILD_ROOT/usr make %install make install %files %defattr(-,root,root) /usr/bin/simpleproxy /usr/man/man1/simpleproxy.1.gz %doc README.txt pop3users.txt ChangeLog