simpleproxy-3.4/0040750000000000000000000000000010303517367012455 5ustar rootrootsimpleproxy-3.4/ChangeLog0100640000000000000000000000771110303517172014225 0ustar rootroot2005-08-25 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-3.4/Makefile.in0100640000000000000000000000157210303517172014517 0ustar rootroot# $Id: Makefile.in,v 1.2 2005/08/26 04:45:46 zlatk Exp $ # 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) -o simpleproxy simpleproxy.o cfg.o $(LIBS) .c.o: $(CC) $(CFLAGS) -c $< cfg.o: cfg.c cfg.h Makefile simpleproxy.o: simpleproxy.c cfg.h Makefile simpleproxy-3.4/README0100640000000000000000000000172610302476150013332 0ustar rootrootSimpleproxy v3.3 Vadim Zaliva Vlad Karpinsky Vadim Tymchenko Simpleproxy program acts as simple tcp proxy. It listens for local socket, and any connection to this port will be forwarded to another socket at remote host. If you specify '-P ' option simpleproxy will load list of users from the (one per line). After this it will be forwarding POP3 sessions only if client trying to authenificate as this user. Tested on Linux, SunOS, Solaris. To install run `./configure`. Then, do 'make install'. Can be used, for example, to run local irc client through proxy started at ISP shell account, if some IRC serverc does not allow you to connect directly. Latest version always can be found at http://www.crocodile.org/software.html Please use bug tracking system (follow link from WWW page to report bugs). If you want to send us patch, please use `diff -u` command. simpleproxy-3.4/TODO0100640000000000000000000000067207717240030013143 0ustar rootroot$Id: TODO,v 1.2 2003/08/15 20:18:32 zlatk Exp $ . 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-3.4/cfg.c0100640000000000000000000002131707656331327013371 0ustar rootroot/* * $Id: cfg.c,v 1.2 2003/05/08 01:28:55 lord Exp $ * * 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) { int j; 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; int n,i; char *pname,*pvalue; 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-3.4/cfg.h0100640000000000000000000000314407024246563013370 0ustar rootroot/* * $Id: cfg.h,v 1.1.1.1 1999/12/10 18:58:59 lord Exp $ * * 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-3.4/configure0100750000000000000000000015345007024246563014374 0ustar rootroot#! /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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WEXITSTATUS (s) : 1; ; return 0; } EOF if { (eval echo configure:1162: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* ac_cv_header_sys_wait_h=yes else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* ac_cv_header_sys_wait_h=no fi rm -f conftest* fi echo "$ac_t""$ac_cv_header_sys_wait_h" 1>&6 if test $ac_cv_header_sys_wait_h = yes; then cat >> confdefs.h <<\EOF #define HAVE_SYS_WAIT_H 1 EOF fi for ac_hdr in fcntl.h sys/time.h syslog.h termio.h unistd.h sys/filio.h stropts.h do ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'` echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6 echo "configure:1186: checking for $ac_hdr" >&5 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < EOF ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" { (eval echo configure:1196: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"` if test -z "$ac_err"; then rm -rf conftest* eval "ac_cv_header_$ac_safe=yes" else echo "$ac_err" >&5 echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* eval "ac_cv_header_$ac_safe=no" fi rm -f conftest* fi if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then echo "$ac_t""yes" 1>&6 ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'` cat >> confdefs.h <&6 fi done echo $ac_n "checking for working const""... $ac_c" 1>&6 echo "configure:1224: checking for working const" >&5 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <j = 5; } { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ const int foo = 10; } ; return 0; } EOF if { (eval echo configure:1278: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* ac_cv_c_const=yes else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* ac_cv_c_const=no fi rm -f conftest* fi echo "$ac_t""$ac_cv_c_const" 1>&6 if test $ac_cv_c_const = no; then cat >> confdefs.h <<\EOF #define const EOF fi echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6 echo "configure:1299: checking whether time.h and sys/time.h may both be included" >&5 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < #include #include int main() { struct tm *tp; ; return 0; } EOF if { (eval echo configure:1313: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* ac_cv_header_time=yes else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* ac_cv_header_time=no fi rm -f conftest* fi echo "$ac_t""$ac_cv_header_time" 1>&6 if test $ac_cv_header_time = yes; then cat >> confdefs.h <<\EOF #define TIME_WITH_SYS_TIME 1 EOF fi echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6 echo "configure:1335: checking return type of signal handlers" >&5 if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < #include #ifdef signal #undef signal #endif #ifdef __cplusplus extern "C" void (*signal (int, void (*)(int)))(int); #else void (*signal ()) (); #endif int main() { int i; ; return 0; } EOF if { (eval echo configure:1357: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* ac_cv_type_signal=void else echo "configure: failed program was:" >&5 cat conftest.$ac_ext >&5 rm -rf conftest* ac_cv_type_signal=int fi rm -f conftest* fi echo "$ac_t""$ac_cv_type_signal" 1>&6 cat >> confdefs.h <&6 echo "configure:1376: checking for vprintf" >&5 if eval "test \"`echo '$''{'ac_cv_func_vprintf'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < /* Override any gcc2 internal prototype to avoid an error. */ /* We use char because int might match the return type of a gcc2 builtin and then its argument prototype would still apply. */ char vprintf(); int main() { /* The GNU C library defines this for functions which it implements to always fail with ENOSYS. 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AC_INIT(simpleproxy.c) dnl Checks for programs. AC_PROG_CC AC_PROG_INSTALL AC_CHECK_PROG(LINT,lint) dnl Checks for libraries. AC_CHECK_LIB(nsl, gethostbyname) AC_CHECK_LIB(socket, connect) dnl Checks for header files. AC_HEADER_STDC AC_HEADER_SYS_WAIT AC_CHECK_HEADERS(fcntl.h sys/time.h syslog.h termio.h unistd.h sys/filio.h stropts.h) dnl Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_HEADER_TIME dnl Checks for library functions. AC_TYPE_SIGNAL AC_FUNC_VPRINTF AC_CHECK_FUNCS(syslog openlog closelog select socket strdup strerror strtol vsnprintf vsprintf) AC_OUTPUT(Makefile) simpleproxy-3.4/install-sh0100750000000000000000000001272107024246563014464 0ustar rootroot#! /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-3.4/mkinstalldirs0100750000000000000000000000133307024246563015263 0ustar rootroot#! /bin/sh # mkinstalldirs --- make directory hierarchy # Author: Noah Friedman # Created: 1993-05-16 # Public domain # $Id: mkinstalldirs,v 1.1.1.1 1999/12/10 18:58:59 lord Exp $ 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-3.4/pop3users.txt0100640000000000000000000000020107024246561015151 0ustar rootroot# This file lists users whose requests will be forwarded # by simpleproxy(1) if it is started in POP3 mode. # guest pascal lord simpleproxy-3.4/sample.cfg0100640000000000000000000000122507024246561014416 0ustar rootroot# $Id: sample.cfg,v 1.1.1.1 1999/12/10 18:58:57 lord Exp $ #---------------------------------------------------------------- # 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-3.4/simpleproxy.c0100640000000000000000000007615510303517172015222 0ustar rootroot/* * $Id: simpleproxy.c,v 1.13 2005/08/26 04:45:46 zlatk Exp $ * --------------------------------------------------------------------- * * Simple proxy daemon * ==================== * * Authors: * -------- * Vadim Zaliva * Vlad Karpinsky * Vadim Tymchenko * * 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 "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 v3.4 by lord@crocodile.org,vlad@noir.crocodile.org,verylong@noir.crocodile.org"; static char *SIMPLEPROXY_USAGE = "simpleproxy -L <[host:]port> -R [-d] [-v] [-V] [-7] [-i] [-p PID file] [-P ] [-f cfgfile] [-t tracefile] [-D delay in sec.] [-S [-a :] ]"; static char *PROXY_HEADER = "\nProxy-Authorization: Basic %s"; 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_one( int in, int out ); 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 log(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 isUsingHTTPAuth = 0; static long Delay = 0; static char *HTTPSProxyHost = nil; static int HTTPSProxyPort = -1; static char *HTTPBasicAuthString = nil; static char *Tracefile = nil; static int SockFD = -1, SrcSockFD = -1, DstSockFD = -1; struct lst_record *POPList = nil; int main(int ac, char **av) { int 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 *http_auth = nil; char *HTTPAuthHash = nil; /* Check for the arguments, and overwrite values from cfg file */ while((c = getopt(ac, av, "iVv7dhL:R:H:f:p:P:D:S:s:a:t:")) != -1) switch (c) { case 'v': isVerbose++; break; case 'i': isStartedFromInetd++; break; case 'd': isDaemon++; break; case 'p': replace_string(&pidfile, optarg); break; case 'f': replace_string(&cfgfile, optarg); if(cfgfile) { if((cfg=readcfg(cfgfile))==nil) { log(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)); 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); 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"); isUsingHTTPAuth = 1; http_auth = optarg; break; case 't': replace_string(&Tracefile, optarg); break; default: errflg++; } /* let us check options compatibility and completness*/ if(isUsingHTTPAuth) { HTTPAuthHash = base64_encode(http_auth); HTTPBasicAuthString = malloc(strlen(HTTPAuthHash) + strlen(PROXY_HEADER)); sprintf(HTTPBasicAuthString,PROXY_HEADER,HTTPAuthHash); free(HTTPAuthHash); } else { HTTPBasicAuthString = ""; } 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) log(LOG_ERR,"Error installing interrupt handler."); if(lportn <= 1024 && geteuid()!=0 && !isStartedFromInetd) { if(!isVerbose) { logopen(); isVerbose++; } log(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) { log(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))) log(LOG_ERR,"Error setting socket options"); if (bind(SockFD, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) { log(LOG_ERR,"Error binding socket."); fatal(); } log(LOG_INFO,"Waiting for connections."); if (listen(SockFD,5) < 0) { log(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; log(LOG_ERR, "accept error - %s", strerror(errno)); fatal(); } signal(SIGCHLD, child_dead); switch (fork()) { case -1: /* fork error */ log(LOG_ERR,"fork error - %s", strerror(errno)); break; case 0: /* Child */ hp = gethostbyaddr((char *)&cli_addr, clien, AF_INET); client_name = strdup(hp?(hp->h_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 */ log(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(); log(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 log(LOG_NOTICE, "Connect (inted->%s:%d)", (rhost && *rhost)? rhost: "localhost", rportn); process_remote(rhost, rportn, "inted"); log(LOG_NOTICE, "Connect (inted->%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); chdir("/"); 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 */ log(LOG_ERR, "i/o error - %s", strerror(errno)); return; default: if(FD_ISSET( fd, &in)) retval = pass_one(fd, client); else if(FD_ISSET( client, &in)) retval = pass_one(client, fd); 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; } static int pass_one( 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) { log(LOG_ERR,"write error"); return -1; } } 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) { log(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) { log(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; log(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) log(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)) { log(LOG_ERR,"POP3 login failed for %s.", client_name); return -1; } pass_all(DstSockFD, SrcSockFD); shutdown(DstSockFD, 2); close(DstSockFD); DstSockFD = -1; } 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) { log(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) { log(LOG_ERR,"Unknown host %s", dest_host); return -1; } if (connect(DstSockFD, (struct sockaddr *) &remote_addr, sizeof(remote_addr))) { log(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\n\n", remoteHost, remotePort, SIMPLEPROXY_VERSION,HTTPBasicAuthString); n = strlen(buff); if (writen(DstSockFD, buff, n) != n) { log(LOG_ERR, "write error - %s", strerror(errno)); return -1; /* write error */ } /* reading responce from the server */ if (readln(DstSockFD,buff,MBUFSIZ) <= 0) { log(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) { log(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 log(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) { log(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) log(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[256]; char trace_header[256]; int trace_header_len; struct sockaddr_in peer_addr; int peer_addr_len = sizeof(peer_addr); struct hostent *peer_host; 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) { log(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) { peer_host = gethostbyaddr((char *)&peer_addr, peer_addr_len, AF_INET); snprintf(peer_name, sizeof(peer_name) - 1, "%s:%i", peer_host? (peer_host->h_name): inet_ntoa(peer_addr.sin_addr), 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); write(tfd, trace_header, (trace_header_len < sizeof(trace_header) - 1)? trace_header_len: (sizeof(trace_header) - 1)); write(tfd, buf, siz); close(tfd); } } simpleproxy-3.4/simpleproxy.man0100640000000000000000000000457210302476150015544 0ustar rootroot.TH SIMPLEPROXY 1 "Version 3.3" .ds ]W November 2003 .SH NAME simpleproxy \- Simple tcp socket proxy .SH SYNOPSIS .ta 6n \fBsimpleproxy\fP [-7] [-v] [-V] [-d] [-i] -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 <\fIHTTP Auth User\fP>:<\fIHTTP 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 \-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 .SH CONTRIBUTORS .PP Pavel Roskin , Cedric Tefft Christophe Bothamy Ulf Harnhammar simpleproxy-3.4/simpleproxy.spec0100640000000000000000000000136010303517172015714 0ustar rootrootName: simpleproxy Summary: Simple TCP/IP proxy. Packager: Vlad Karpinsky Url: http://www.crocodile.org/software.html Version: 3.4 Release: 1 Copyright: Vadim Zaliva , Vlad Karpinsky , Vadim Tymchenko Group: Daemons Source: ftp://ftp.crocodile.org/pub/simpleproxy-3.4.tar.gz BuildRoot: /tmp/simpleproxy %description Simple TCP/IP proxy. Also provides simple POP3 pre-auth. Can use HTTPs proxy to penetrate 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 pop3users.txt ChangeLog