pax_global_header00006660000000000000000000000064125161236300014511gustar00rootroot0000000000000052 comment=d05fe08154ff1e46578e92be49e4cfa2c6543283 tcptrack-1.4.3/000077500000000000000000000000001251612363000133315ustar00rootroot00000000000000tcptrack-1.4.3/AUTHORS000066400000000000000000000007461251612363000144100ustar00rootroot00000000000000Steve Benson Primary author Leo Costela Debian packages, bugfixes, column total feature Dries Verachtert Christian Weiss Fixes for gcc 4.1+ Adam Osuchowski 802.1q VLAN support Zach Bagnall Bytes transferred sort option and sort option cycling/display Kristof Provost IPv6 support and numerous cleanups and fixes tcptrack-1.4.3/COPYING000066400000000000000000000634601251612363000143750ustar00rootroot00000000000000 GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 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You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the library, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! tcptrack-1.4.3/ChangeLog000066400000000000000000000103141251612363000151020ustar00rootroot00000000000000* 1.4.0 released 2010-sep-28 - Incorporated patches from Kristof Provost for IPv6 support and numerous cleanups and bug fixes. An issue where tcptrack would run but not display any connections should now be fixed. Thanks to Ronald W. Henderson for help testing and debugging. * 1.3.0 released 2007-feb-06 - New sort options: unsorted, sort by rate, sort by byte count. Thanks to Zach Bagnall for the patch. * 1.2.0 released 2006-dec-20 - Fixes for compiling on gcc 4.1+ (thanks to Dries Verachtert, Christian Weiss) - 802.1q VLAN support (thanks to Adam Osuchowski) * 1.1.5 released 2005-mar-12 - Fixed a bug where tcptrack would crash due to a floating point exception if it sniffed TCP packets with source or destination ports of 0. * 1.1.4 released 2004-oct-10 - Fixed a memory leak in the TCPConnection class. * 1.1.3 released 2004-aug-16 - Added a total for the speed column at the bottom of the display. Thanks to Leo Costela for the patch. - Fixed a few minor user interface bugs (mostly exposed by the above patch). * 1.1.2 released 2004-jun-03 - Fixed assertion an assertion failure (in IPv4Packet.cc) bug. - tcptrack can now run on interfaces with no IPv4 addresses (ie, stealth interfaces). - Fixed a few crashes and assertion failures on Mac OSX and FreeBSD caused by missing pthread_*_init calls. Thanks to Chuck Schied for the patch. - Added a timeout for connections in the CLOSING state. Connections may get stuck in that state due to dropped packets, timeouts by the peers, or there may be a bug in the TCPConnection state machine code that I haven't found yet. - ChangeLog is now a regular ChangeLog, not a development log. The contents of this file were previously in the NEWS file. NEWS will now contain the same stuff that's on the web page. * 1.1.1 released 2004-may-10 - Fixed problem where tcptrack would silently not work on certain ppp connections (a.k.a. debian bug #245227) - Added support for NULL and RAW pcap interface types. tcptrack should now work on all linux PPP, ethernet, tun/tap and local loopback interfaces. - tcptrack now compiles properly with gcc 3.4. Thanks to Jim Gifford. - Added EXAMPLES section to man page and a few extra notes to man page about guessing, pause/sort options. * 1.1.0 released 2004-apr-18 - Fixed problems with crashes on FreeBSD and Solaris. Stack sizes of certain threads were too small (adjustable in defs.h). * 1.1.beta1 released 2004-mar-31 - Idle time can be computed & updated more than once a second now and may be more accurate under heavy load. See the man page for more info. - Idle time now displays hours/minutes instead of always seconds. - tcptrack can now see connections that were started before tcptrack was. - Added -d option to disable connection detection (above). - List of connections is now scrollable with arrow keys. - Added pause/unpause and enable/disable sort options - Added status display for number of connections shown and total and pause / sort options - tcptrack now exits cleaner - internal data structures changed to make tcptrack more CPU efficient. - lots of internal code changes to make code more organized and reusable. - More error handling added. - Added -p option to enable/disable promisc mode - Sorting is now done by speed first, least idle time second. Before, idle time was not factored in the sorting. - Stack size of each thread reduced. configurable in defs.h. tcptrack now uses a lot less virtual address space. * 1.0.2 released 2003-dec-04 - Fixed some Solaris build issues - configure script updated - Fixed assert compile problem on some systems * 1.0.1 released 2003-nov-27 - Fixed a memory leak - fixed a problem that would cause tcptrack to segfault under heavy load - tcptrack no longer grabs packet payloads off of the network, making it more efficient (especially in terms of memory under heavy load). - FreeBSD (and probably other BSD) timing issues have been fixed. - New timing options controllable in defs.h - tcptrack only works on ethernet interfaces for now. It will now fail to start up on non-ethernet interfaces and print an error. - tcptrack still won't compile on Solaris. I'm working on getting access to a Solaris machine to test on. * 1.0.0 released 2003-nov-23 - First public release. tcptrack-1.4.3/INSTALL000066400000000000000000000020521251612363000143610ustar00rootroot00000000000000Requirements ------------ libpcap 0.7.2 or higher. You can use earlier versions if you hack your libpcap include files to fix a minor C++ bug in the pcap.h header file as described in README. Building and Installing ----------------------- To build and install: ./configure make make install Run ./configure --help to see a list of options to change things like the installation directory. If configure tells you you don't have pcap.h when you do, or if make fails with previous declaration errors, see README. Using ----- To run tcptrack, you need to specify an interface for it to sniff: tcptrack -i eth0 You can also provide a pcap filter expression: tcptrack -i eth0 src or dst 192.168.33.92 and port 80 That will make tcptrack only monitor web connections to or from 192.168.33.92 on eth0. The expression syntax is the same as you'd use for tcpdump and possibly other pcap-based sniffers. While in tcptrack, hit 'q' to exit. 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Known Bugs / Gotchas -------------------- tcptrack does not compile cleanly with libpcap versions earlier than 0.7.2. See below for a hack to your libpcap <0.7.2 to get tcptrack to compile on it, or upgrade your libpcap. On some systems at the end of the build process (after doing make), you may see "g++: unrecognized option -pthread". This is a problem with the configure script thinking that your c++ compiler actually accepts this option. This message isn't actually a fatal error. Unless some other error occurred, you should have a working tcptrack binary built and can test it or proceed to 'make install'. I have had one report that tcptrack will fail to compile on Solaris giving a ton of errors involving stl include files while doing 'make'. I have not been able to reproduce this on any Solaris machine that I have access to. I'm not sure if there's a problem in tcptrack or elsewhere. If you encounter this, please let me know. Notes ----- Compilation may fail with errors about multiple declarations of bpf_validate and bpf_filter. There is a bug in libpcap versions earlier than 0.7.2 which causes this to happen when using libpcap in C++ programs. To correct it get libpcap 0.7.2 or higher from www.tcpdump.org or see the notes at the end of this README file on how to fix your version. On Redhat 7.x configure or compilation may fail with errors about net/bpf.h not existing, or configure may tell you that it cannot find pcap.h when you in fact have it. I think this is a bug with Redhat's libpcap packages. See below for instructions on how to fix it, or install libpcap >= 0.7.2 from source. Fixing Redhat pcap build/configure problems ------------------------------------------- As mentioned above in the Notes section, this may be needed if you're on Redhat 7.x and configure tells you you don't have pcap.h when in fact you do. Edit your pcap.h file (/usr/include/pcap/pcap.h on RH 7.x). Line 42 reads: #include Change it to read: #include Now try running configure again. If you get 'previous declaration' errors while running make, see the next section. Fixing C++ bug in pcap < 0.7.2 ------------------------------ This is a hack that is only needed if you're experiening the build problems about multiple declarations of bpf_validate and bpf_filter mentioned above in the Notes section. Note that this may cause other programs to fail to compile, so you should change it back after you've built tcptrack (or upgrade your libpcap if posssible). Edit your pcap.h. It may be in /usr/include or /usr/include/pcap. Around line 169 (as of libpcap 0.6.2, YMMV) you should see the following lines: u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int); int bpf_validate(struct bpf_insn *f, int len); Comment them out: /* u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int); int bpf_validate(struct bpf_insn *f, int len); */ Now try building again. Reporting Bugs / Comments / Requests / Patches ---------------------------------------------- Send me (Steve Benson) an email at steve@rhythm.REMOVE_THIS_SPAMTRAP.cx if you have questions or find bugs or anything. tcptrack-1.4.3/TODO000066400000000000000000000054731251612363000140320ustar00rootroot00000000000000 -- done for 1.1.2 --- Craig Raw assert failure on IPv4Packet.cc:19 X> drop bad packets earlier in the code Ronald W. Henderson be able to run and use a filter on an iface with no IPv4 Addr X> see how tcpdump calls pcap_compile without the net arg if we weren't given a filter, dont' try to compile one X> already added an if() around the filter compile code James E. Hopper Chuck Schied missing pthread_*_init calls... causes probs on OSX and FBSD. X> Chuck sent a patch. apply. Niels Burmeister seeing connections stuck in the CLOSING state. X> add timeout? X> review TCPConnection state machine code Jay James 249186@bugs.debian.org anthony@derobert.net 0.6.2 compile probs... already documented in README -> make configure barf if broken libpcap 0.6.2 or earlier detected * make ChangeLog a change log, NEWS is for news. -- done for 1.1.0 -- * make configure see if 'using namespace __gnu_cxx;' works... then ifdef to taste. * add NLP parameter to NetworkPacket::newPacket * add code to transfer exceptions between threads (to TCPTrack) * make configure check for stl includes * only works on ethernet interfaces works on linux_sll ifaces now... (ppp,tun,lo) * abort if terminal is too small * clopt: closed connections remove timeout * make real hash funcs for Guesser and TCContainer * Be able to pick up connections that we didn't see the SYN for * make UI scrollable list, using curses pad, maybe * icmd: s: enable/disable sorting * icmd: p: don't remove closed cons, no new cons * clean up status display (sorted/paused flags) * dont call exit() from within objects, throw an exception or something * clean close down... stop curses nicely * put stuff in main in an app class * Idle time display hours/minutes -- >= 1.2.0 ---- separate up/down speeds calculate averages over an arbitrary range of time... or lifetime of conn. bits/bytes sec flag exit immediately allow averages to be calculated over an arbitrary period (extend fastmode) clopt: no sorting clopt: units (B/s KB/s) -- probably need gui complete error checking on every sys/lib call -- PacketBuffer and Sniffer have this, others can wait. display all non-TCP/IPv4 bandwidth usage somewhere tcp round trip time (latency) network hops between endpoints (ttl ip field) replay tcpdump captures make UI occupy full window size horizontally make debug log allow format string like printf make configure look for pcap/pcap.h and if found, add -I/usr/include/pcap or something like that to compilation. might fix redhat packaging issue duplicate excess -I in compilation etherreal extension? 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See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . if test -z "$depmode" || test -z "$source" || test -z "$object"; then echo "depcomp: Variables source, object and depmode must be set" 1>&2 exit 1 fi # `libtool' can also be set to `yes' or `no'. if test -z "$depfile"; then base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'` dir=`echo "$object" | sed 's,/.*$,/,'` if test "$dir" = "$object"; then dir= fi # FIXME: should be _deps on DOS. depfile="$dir.deps/$base" fi tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} rm -f "$tmpdepfile" # Some modes work just like other modes, but use different flags. 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Grab either from any GNU archive site." file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'` if test -z "$file"; then file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'` file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file` fi touch $file ;; tar) shift if test -n "$run"; then echo 1>&2 "ERROR: \`tar' requires --run" exit 1 fi # We have already tried tar in the generic part. # Look for gnutar/gtar before invocation to avoid ugly error # messages. if (gnutar --version > /dev/null 2>&1); then gnutar "$@" && exit 0 fi if (gtar --version > /dev/null 2>&1); then gtar "$@" && exit 0 fi firstarg="$1" if shift; then case "$firstarg" in *o*) firstarg=`echo "$firstarg" | sed s/o//` tar "$firstarg" "$@" && exit 0 ;; esac case "$firstarg" in *h*) firstarg=`echo "$firstarg" | sed s/h//` tar "$firstarg" "$@" && exit 0 ;; esac fi echo 1>&2 "\ WARNING: I can't seem to be able to run \`tar' with the given arguments. You may want to install GNU tar or Free paxutils, or check the command line arguments." exit 1 ;; *) echo 1>&2 "\ WARNING: \`$1' is needed, and you do not seem to have it handy on your system. You might have modified some files without having the proper tools for further handling them. Check the \`README' file, it often tells you about the needed prerequirements for installing this package. You may also peek at any GNU archive site, in case some other package would contain this missing \`$1' program." exit 1 ;; esac exit 0 tcptrack-1.4.3/mkinstalldirs000077500000000000000000000013221251612363000161350ustar00rootroot00000000000000#! /bin/sh # mkinstalldirs --- make directory hierarchy # Author: Noah Friedman # Created: 1993-05-16 # Public domain # $Id: mkinstalldirs,v 1.13 1999/01/05 03:18:55 bje 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 $pathcomp" mkdir "$pathcomp" || lasterr=$? if test ! -d "$pathcomp"; then errstatus=$lasterr fi fi pathcomp="$pathcomp/" done done exit $errstatus # mkinstalldirs ends here tcptrack-1.4.3/src/000077500000000000000000000000001251612363000141205ustar00rootroot00000000000000tcptrack-1.4.3/src/AppError.cc000066400000000000000000000001621251612363000161600ustar00rootroot00000000000000#include #include #include "AppError.h" // AppError is an abstract class. See header file. tcptrack-1.4.3/src/AppError.h000066400000000000000000000004111251612363000160170ustar00rootroot00000000000000#ifndef APPERROR_H #define APPERROR_H 1 #include using namespace std; // AppError is an abstract base class for all exceptions in TCPTrack class AppError { public: AppError() { } virtual ~AppError() { } virtual string msg() const = 0; }; #endif tcptrack-1.4.3/src/Collector.cc000066400000000000000000000022641251612363000163610ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "TCPConnection.h" #include "Collector.h" void Collector::collect(TCPConnection *c) { // in the future when multiple SortedIterators are allowed and // the TCContainer isn't locked, this will have to be sure that the // connection being deleted isn't referenced anywhere before deleting it delete c; } tcptrack-1.4.3/src/Collector.h000066400000000000000000000017461251612363000162270ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef COLLECTOR_H #define COLLECTOR_H class Collector { public: void collect(TCPConnection *c); }; #endif tcptrack-1.4.3/src/GenericError.cc000066400000000000000000000004041251612363000170130ustar00rootroot00000000000000#include #include #include "GenericError.h" using namespace std; GenericError::GenericError( const char *msg ) { m=msg; } GenericError::GenericError( const GenericError &ge ) { m=ge.m; } string GenericError::msg() const { return m; } tcptrack-1.4.3/src/GenericError.h000066400000000000000000000007721251612363000166650ustar00rootroot00000000000000#ifndef GENERICERROR_H #define GENERICERROR_H 1 #include #include "AppError.h" using namespace std; // this is a general exception used for lots of things // ...mainly because I haven't gotten around to making more useful // exception classes yet. class GenericError : public AppError { public: GenericError( const char *msg ); GenericError( string msg ) { m=msg; }; GenericError( const GenericError &ge ); virtual ~GenericError() { } string msg() const; private: string m; }; #endif tcptrack-1.4.3/src/Guesser.cc000066400000000000000000000046151251612363000160520ustar00rootroot00000000000000#include #include "TCPCapture.h" #include "Guesser.h" Guesser::Guesser() { } Guesser::~Guesser() { for( pktmap::iterator i=hash.begin(); i!=hash.end(); ) { TCPCapture *cp = (*i).second; pktmap::iterator tmp_i = i; i++; hash.erase(tmp_i); delete cp; } } TCPConnection * Guesser::addPacket( TCPCapture &p ) { // TODO: there should be a thread or something that periodically // checks hash for the age of the packets it contains and removes // old stuff. // TCP Packets with the following flags set will not trigger the // detection of a new connection. if( p.GetPacket().tcp().syn() ) return NULL; if( p.GetPacket().tcp().ece() ) return NULL; if( p.GetPacket().tcp().fin() || p.GetPacket().tcp().rst() ) { hash.erase(p.GetPacket().sockpair()); return NULL; } if( hash[p.GetPacket().sockpair()]==NULL ) { // no packets received yet for this connection TCPCapture *cp = new TCPCapture(p); hash[cp->GetPacket().sockpair()]=cp; return NULL; } else { // already received a packet for this connection. // replace the old with the new. (remove later) // return a connection. TCPCapture *ocp = hash[p.GetPacket().sockpair()]; hash.erase(p.GetPacket().sockpair()); if( ( ocp->GetPacket().srcAddr() == p.GetPacket().dstAddr() ) && ( ocp->GetPacket().tcp().srcPort() == p.GetPacket().tcp().dstPort() ) && ( p.timestamp().tv_sec-ocp->timestamp().tv_sec < 60 ) ) { TCPConnection *nc; // Currently a TCPConnection expects to be built from a packet // that is going from the client to the server. This is because // the client initiates the connection and TCPConnection // was originally coded to only accept the initial SYN packet // to its constructor. At some point this logic may be // moved into the TCPConnection constructor. // crude way to guess at which end is the client: // whichever end has the lowest port number. // TODO: can this cli/server guessing be made more intelligent? if( p.GetPacket().tcp().srcPort() > p.GetPacket().tcp().dstPort() ) { // this packet might be the one we saw that went from // client->server. nc=new TCPConnection(p); } else { // if not, maybe it was this other packet. nc=new TCPConnection(*ocp); } delete ocp; return nc; } else { hash[ocp->GetPacket().sockpair()] = new TCPCapture(p); delete ocp; return NULL; } } return NULL; } tcptrack-1.4.3/src/Guesser.h000066400000000000000000000025571251612363000157170ustar00rootroot00000000000000#ifndef GUESSER_H #define GUESSER_H 1 #include "../config.h" #ifdef HAVE_HASH_MAP #include #elif HAVE_EXT_HASH_MAP #include #endif #include "SocketPair.h" #include "util.h" #include "TCPConnection.h" #include "TCPCapture.h" #ifdef GNU_CXX_NS using namespace __gnu_cxx; #endif class GEqFunc : public unary_function { public: bool operator()( const SocketPair &sp1, const SocketPair & sp2 ) { if( sp1==sp2 ) return true; else return false; } }; class GHashFunc : public unary_function { public: uint32_t operator()(const SocketPair &sp) const { return sp.hash(); } }; typedef hash_map pktmap; /* Guesser implements the 'detect connections that started before * tcptrack was started' functionality. * The Guesser takes TCP packets that don't belong to any known * connection and stores them. As it is fed more stray packets, it may * detect a TCP connection on the network. */ class Guesser { public: Guesser(); ~Guesser(); // feed Guesser a stray packet. If it results in a connection // detected, it will be returned. If no new connections, NULL // is returned. TCPConnection * addPacket( TCPCapture &p ); private: // stray packets that we're keeping track of are stored here. // indexed by src/dst addrs and ports. pktmap hash; }; #endif tcptrack-1.4.3/src/IPAddress.cc000066400000000000000000000001771251612363000162520ustar00rootroot00000000000000#include "IPAddress.h" std::ostream& operator<<( std::ostream &out, const IPAddress &ip ) { out << ip.ptr(); return out; } tcptrack-1.4.3/src/IPAddress.h000066400000000000000000000011471251612363000161120ustar00rootroot00000000000000/** * Abstract base class, * to be used everywhere instead of IPv4Address/IPv6Address **/ #ifndef IPADDRESS_H #define IPADDRESS_H 1 #include #include class IPAddress { public: IPAddress() { } virtual ~IPAddress() { } virtual int GetType() const = 0; virtual bool operator==( const IPAddress & ) const = 0; virtual bool operator!=( const IPAddress & addr ) const { return !operator!=(addr); } virtual char * ptr() const = 0; virtual uint32_t hash() const = 0; virtual IPAddress* Clone() const = 0; }; std::ostream& operator<<( std::ostream &out, const IPAddress &ip ); #endif tcptrack-1.4.3/src/IPv4Address.cc000066400000000000000000000016771251612363000165320ustar00rootroot00000000000000#include #include #include #include #include "IPv4Address.h" #include "util.h" // this function is used for C functions that need a C-style string. char * IPv4Address::ptr() const { static char ascii[16]; // 12 for octets, 3 dots, 1 null unsigned int iaddr = ntohl(m_addr.s_addr); int oc1 = (iaddr & 0xFF000000)/16777216; int oc2 = (iaddr & 0x00FF0000)/65536; int oc3 = (iaddr & 0x0000FF00)/256; int oc4 = (iaddr & 0x000000FF); sprintf(ascii,"%d.%d.%d.%d",oc1,oc2,oc3,oc4); return ascii; } bool IPv4Address::operator==( const IPAddress & addr ) const { if ( addr.GetType() != GetType()) return false; const IPv4Address *ipv4_addr = dynamic_cast(&addr); assert( ipv4_addr != NULL); return ipv4_addr->m_addr.s_addr == m_addr.s_addr; } uint32_t IPv4Address::hash() const { return m_addr.s_addr; } IPAddress* IPv4Address::Clone() const { return new IPv4Address(m_addr); } tcptrack-1.4.3/src/IPv4Address.h000066400000000000000000000010261251612363000163600ustar00rootroot00000000000000#ifndef IPV4ADDRESS_H #define IPV4ADDRESS_H 1 #include #include #include "headers.h" #include "IPAddress.h" class IPv4Address : public IPAddress { public: IPv4Address(struct in_addr addr) { m_addr = addr; } IPv4Address(IPv4Address &addr) { m_addr = addr.m_addr; } virtual int GetType() const { return 4; } virtual bool operator==( const IPAddress & ) const; virtual char * ptr() const; virtual uint32_t hash() const; virtual IPAddress* Clone() const; private: struct in_addr m_addr; }; #endif tcptrack-1.4.3/src/IPv6Address.cc000066400000000000000000000023061251612363000165220ustar00rootroot00000000000000#include #include #include #include #include #include #include "IPv6Address.h" #include "util.h" uint16_t IPv6Address::GetShort( int index ) const { assert(index >= 0); assert(index < 8); //return ntohs(m_addr.in6_u.u6_addr16[index]); return ntohs(m_addr.s6_addr16[index]); } // this function is used for C functions that need a C-style string. char * IPv6Address::ptr() const { static char ascii[INET6_ADDRSTRLEN]; snprintf(ascii, 42, "[%x:%x:%x:%x:%x:%x:%x:%x]", GetShort(0), GetShort(1), GetShort(2), GetShort(3), GetShort(4), GetShort(5), GetShort(6), GetShort(7)); return ascii; } bool IPv6Address::operator==( const IPAddress & addr ) const { if ( addr.GetType() != GetType()) return false; const IPv6Address *ipv6_addr = dynamic_cast(&addr); assert( ipv6_addr != NULL); return memcmp(&ipv6_addr->m_addr, &m_addr, 16) == 0; } uint32_t IPv6Address::hash() const { // The last 4 bytes of the IPv6 address are a good enough hash for now //return m_addr.in6_u.u6_addr32[3]; return m_addr.s6_addr16[3]; } IPAddress* IPv6Address::Clone() const { return new IPv6Address(m_addr); } tcptrack-1.4.3/src/IPv6Address.h000066400000000000000000000011121251612363000163560ustar00rootroot00000000000000#ifndef IPV6ADDRESS_H #define IPV6ADDRESS_H 1 #include #include #include "headers.h" #include "IPAddress.h" class IPv6Address : public IPAddress { public: IPv6Address( const struct in6_addr &addr ) { m_addr = addr; } IPv6Address( IPv6Address &addr ) { m_addr = addr.m_addr; 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For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #include #include #include #include #include "headers.h" #include "TCContainer.h" #include "PacketBuffer.h" #include "defs.h" #include "TCPPacket.h" #include "TCPCapture.h" #include "GenericError.h" PacketBuffer::PacketBuffer() { inq = &pq1; outq = &pq2; c=NULL; pthread_initted=false; pthread_mutex_init( &c_lock, NULL ); pthread_mutex_init( &inq_lock, NULL ); pthread_cond_init( &inq_flag, NULL ); } void PacketBuffer::init() { // // Start up maintenence thread // pthread_attr_t attr; if( pthread_attr_init( &attr ) != 0 ) throw GenericError("pthread_attr_init() failed"); // TODO: there is no man page for this call on linux. Not sure what it // may return. On some systems it may not be supported at all // (should return ENOSYS). Should be safe to ignore return val. pthread_attr_setstacksize( &attr, SS_PB ); if( pthread_create(&maint_thread_tid,&attr,pbmaint_thread_func,this) != 0 ) throw GenericError("pthread_create() returned an error"); pthread_initted=true; } void PacketBuffer::dest( TCContainer *nc ) { assert( pthread_mutex_lock(&c_lock) == 0 ); c=nc; assert( pthread_mutex_unlock(&c_lock) == 0 ); } PacketBuffer::~PacketBuffer() { if( pthread_initted ) { // if pthread_cancel returns non-zero, this indicates that // maint_thread_tid is not valid. It may have stopped because of // an exception. Don't bother joining in that case. if( pthread_cancel(maint_thread_tid) == 0 ) pthread_join(maint_thread_tid,NULL); } } void PacketBuffer::pushPacket( struct nlp *p ) { assert(p!=NULL); assert( pthread_mutex_lock(&c_lock) == 0 ); // if no destination has been set, drop the packet. if( c==NULL ) { assert( pthread_mutex_unlock(&c_lock) == 0 ); return; } assert( pthread_mutex_lock(&inq_lock) == 0 ); inq->push(p); // wake up the maint thread if it is sleeping... assert( pthread_cond_signal(&inq_flag) == 0 ); assert( pthread_mutex_unlock(&inq_lock) == 0 ); assert( pthread_mutex_unlock(&c_lock) == 0 ); } void PacketBuffer::maint_thread_run() { struct nlp *p; while(1) { // see if inq is empty. // if empty: wait on a condition variable set by pushPacket // if not: process inq as usual. assert( pthread_mutex_lock(&inq_lock) == 0 ); // if the input queue is empty, sleep until something is deposited. if( inq->empty() ) pthread_cond_wait(&inq_flag,&inq_lock); // swap in & out queues // this allows the input queue to be unlocked ASAP so the Sniffer // won't be delayed for too long. if( inq == &pq1 ) { inq = &pq2; outq = &pq1; } else { inq = &pq1; outq = &pq2; } assert( pthread_mutex_unlock(&inq_lock) == 0 ); // process outq // outq doesn't need locks because this (pb maint thread) is the // only thread that should ever access it. p=NULL; int qlen=0; while( ! outq->empty() ) { ++qlen; p=NULL; p=outq->front(); assert( pthread_mutex_lock(&c_lock) == 0 ); if( c != NULL ) { // The sniffer only hands us TCP packets TCPPacket *tcp_packet = TCPPacket::newTCPPacket(p->p, p->len); assert ( tcp_packet != NULL ); TCPCapture c2 (tcp_packet, p->ts); c->processPacket( c2 ); } assert( pthread_mutex_unlock(&c_lock) == 0 ); free(p->p); free(p); outq->pop(); } } } //////////////////////// void *pbmaint_thread_func( void *arg ) { PacketBuffer *pb = (PacketBuffer *) arg; pb->maint_thread_run(); return NULL; } tcptrack-1.4.3/src/PacketBuffer.h000066400000000000000000000044461251612363000166420ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef PACKETBUFFER_H #define PACKETBUFFER_H #include #include "TCContainer.h" class PacketBuffer { public: PacketBuffer(); ~PacketBuffer(); // performs more constructor-like activity, but exceptions can // be thrown from within here. void init(); // tells PacketBuffer where to send its packets. // if NULL, PB will drop all new packets. void dest( TCContainer *nc = NULL ); // add a new packet to this buffer for processing. void pushPacket( struct nlp *p ); // do not call. only called from pbmaint_thread_func. // the pb processor thread runs in here. void maint_thread_run(); private: // was the thread successfully launched? bool pthread_initted; // these are the queues that hold the packets we are given. std::queue pq1; std::queue pq2; // these point to either pq1 or pq2. They never both point to the // same pqX queue. std::queue *inq; std::queue *outq; // mutexes for the input queue (above). // none needed for the output queue since that's only touched // by the maint thread. pthread_mutex_t inq_lock; // when the input queue is empty, the maint thread goes to sleep. // when a packet is added, this cond var is set to wake it up. pthread_cond_t inq_flag; // packets are sent here. TCContainer *c; pthread_mutex_t c_lock; // mutex for the above. pthread_t maint_thread_tid; }; void *pbmaint_thread_func( void * ); #endif tcptrack-1.4.3/src/PcapError.cc000066400000000000000000000004561251612363000163310ustar00rootroot00000000000000#include #include #include #include "PcapError.h" using namespace std; PcapError::PcapError( const char *func, char *errbuf ) { f=func; e=errbuf; } PcapError::PcapError( const PcapError &oe ) { f=oe.f; e=oe.e; } string PcapError::msg() const { return f+": "+e; } tcptrack-1.4.3/src/PcapError.h000066400000000000000000000005601251612363000161670ustar00rootroot00000000000000#ifndef PCAPERROR_H #define PCAPERROR_H #include "AppError.h" #include using namespace std; // this exception is thrown when a pcap_*() function call returns an error. class PcapError : public AppError { public: PcapError( const char *func, char *errbuf ); PcapError( const PcapError &e ); string msg() const; private: string f; string e; }; #endif tcptrack-1.4.3/src/Sniffer.cc000066400000000000000000000130221251612363000160210ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "../config.h" #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #ifdef HAVE_PCAP_PCAP_H #include #elif HAVE_PCAP_H #include #endif #include "PacketBuffer.h" #include "Sniffer.h" #include "defs.h" #include "GenericError.h" #include "AppError.h" #include "PcapError.h" #include "TCPTrack.h" extern TCPTrack *app; Sniffer::Sniffer() { pb=NULL; pcap_initted=false; pthread_initted=false; pthread_mutex_init( &pb_mutex, NULL ); } void Sniffer::dest( PacketBuffer *npb ) { assert( pthread_mutex_lock(&pb_mutex)==0 ); pb=npb; assert( pthread_mutex_unlock(&pb_mutex)==0 ); } void Sniffer::init(char *iface, char *fexp, char *test_file) { assert(pcap_initted==false); assert(pthread_initted==false); char errbuf[PCAP_ERRBUF_SIZE]; // error messages stored here // // open the network interface for sniffing // if( test_file == NULL ) { if( app->promisc ) handle = pcap_open_live(iface, SNAPLEN, 1, POL_TO_MS, errbuf); else handle = pcap_open_live(iface, SNAPLEN, 0, POL_TO_MS, errbuf); } else { handle = pcap_open_offline(test_file, errbuf); } if( !handle ) throw PcapError("pcap_open_live",errbuf); dlt = pcap_datalink(handle); if( dlt!=DLT_EN10MB && dlt!=DLT_LINUX_SLL && dlt!=DLT_RAW && dlt!=DLT_NULL) throw GenericError("The specified interface type is not supported yet."); //if( dlt==DLT_LINUX_SLL ) // cerr << "this is a LINUX_SLL interface\n"; // // prepare the filter // struct bpf_program filter; // the filter for the sniffer char *filter_app = fexp; // The filter expression bpf_u_int32 mask; // The netmask of our sniffing device bpf_u_int32 net; // The IP of our sniffing device if( pcap_lookupnet(iface, &net, &mask, errbuf) == -1 ) { // TODO: should this ever be fatal? // it never is in tcpdump. //pcap_close(handle); //throw PcapError("pcap_lookupnet",errbuf); net = 0; mask = 0; } if( pcap_compile(handle, &filter, filter_app, 0, net) == -1 ) { pcap_close(handle); throw PcapError("pcap_compile",pcap_geterr(handle)); } if( pcap_setfilter(handle, &filter) ) // apply filter to sniffer { pcap_freecode(&filter); pcap_close(handle); throw PcapError("pcap_setfilter",pcap_geterr(handle)); } pcap_freecode(&filter); // filter code not needed after setfilter pcap_initted=true; pthread_attr_t attr; if( pthread_attr_init( &attr ) != 0 ) throw GenericError("pthread_attr_init() failed"); pthread_attr_setstacksize( &attr, SS_S ); if( pthread_create(&sniffer_tid,&attr,sniffer_thread_func,this) != 0 ) throw GenericError("pthread_create() failed."); pthread_initted=true; } Sniffer::~Sniffer() { if( pthread_initted ) { // if pthread_cancel returns non-zero, this indicates that // sniffer_tid is not valid. It may have stopped because of // an exception. Don't bother joining in that case. if( pthread_cancel(sniffer_tid) == 0 ) pthread_join(sniffer_tid,NULL); } if( pcap_initted ) pcap_close(handle); } // this method gets run in a new thread. // it should only be called from sniffer_thread_func, never from anywhere // else. void Sniffer::run() { u_char *other = (u_char *) this; if( pcap_loop(handle, -1, handle_packet, other) == -1 ) throw PcapError("pcap_loop",pcap_geterr(handle)); // Kill the program when the loop ends. // We return 0 so the fuzz tester can tell the difference between a good run and a crash exit(0); } void Sniffer::processPacket( const pcap_pkthdr *header, const u_char *packet ) { assert( pthread_mutex_lock(&pb_mutex)==0 ); if( pb==NULL ) { assert( pthread_mutex_unlock(&pb_mutex) == 0 ); return; } // getnlp parses the link level header. n.p will point to the network // layer header. struct nlp *n = getnlp(packet,dlt,header); if( ! n ) { assert( pthread_mutex_unlock(&pb_mutex) == 0 ); return; } if( ! checknlp(n) ) { if( n->p != NULL ) free(n->p); free(n); assert( pthread_mutex_unlock(&pb_mutex) == 0 ); return; } // TODO: if this throws exceptions, unlock pb_mutex before rethrow. // So far, PacketBuffer doesn't throw any exceptions here. pb->pushPacket(n); assert( pthread_mutex_unlock(&pb_mutex) == 0 ); } ////////////////////// // callback for pthread_create, gets executed in a newly created thread. void *sniffer_thread_func(void *arg) { Sniffer *sniffer = (Sniffer *) arg; try { sniffer->run(); } catch( const AppError &e ) { app->fatal(e.msg()); } return NULL; } // callback function called by pcap_loop every time it receives a packet void handle_packet(u_char *other, const struct pcap_pkthdr *header, const u_char *packet) { Sniffer *sniffer = (Sniffer *) other; sniffer->processPacket(header,packet); } tcptrack-1.4.3/src/Sniffer.h000066400000000000000000000047771251612363000157040ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef SNIFFER_H #define SNIFFER_H 1 #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #ifdef HAVE_PCAP_PCAP_H #include #endif #ifdef HAVE_PCAP_H #include #endif #include #include "PacketBuffer.h" class Sniffer { public: Sniffer(); ~Sniffer(); // init performs some constructor-like activity. It is separate // so that exceptions don't have to be thrown in the constructor. void init(char *iface, char *fexp, char *test_file); // set the place where sniffed packets are sent for further // processing. If NULL, packets are just dropped. void dest( PacketBuffer *pb=NULL ); // do not call. called only from the pcap_loop loopback function. void processPacket(const pcap_pkthdr *header, const u_char *packet); // do not call. called only from sniffer_thread_func void run(); private: pthread_t sniffer_tid; // thread id of sniffer thread pcap_t *handle; // device handle, for net dev we're sniffing PacketBuffer *pb; // send packets here. may be NULL. pthread_mutex_t pb_mutex; // these are true if these parts were successfully initialzised, // and thus would need to be cleaned up in the constructor. // also used to make sure init() isn't called more than once. bool pcap_initted; bool pthread_initted; // the data link type. set to one of the DLT_* values in // net/bpf.h. Specifies what type of link layer this is // (ethernet, ppp, raw IP...) int dlt; }; // pcap_loop calls this function void handle_packet(u_char *other, const struct pcap_pkthdr *header, const u_char *packet); // main function for sniffer thread void *sniffer_thread_func(void *); #endif tcptrack-1.4.3/src/SocketPair.cc000066400000000000000000000027201251612363000164740ustar00rootroot00000000000000#include #include #include "IPAddress.h" #include "SocketPair.h" SocketPair::SocketPair( IPAddress &naddrA, portnum_t nm_portA, IPAddress &naddrB, portnum_t nm_portB ) : m_portA(nm_portA), m_portB(nm_portB) { m_pAddrA = naddrA.Clone(); m_pAddrB = naddrB.Clone(); } SocketPair::SocketPair( const SocketPair &orig ) : m_portA(orig.m_portA), m_portB(orig.m_portB) { m_pAddrA = orig.m_pAddrA->Clone(); m_pAddrB = orig.m_pAddrB->Clone(); } SocketPair::~SocketPair() { delete m_pAddrA; delete m_pAddrB; } // a socketpair is equal to another SocketPair if their src/dst addrs & ports // are the same, OR if they are just the opposite (ie, if it were for a // packet heading in the opposite direction). // this is so packets heading in either direction will match the same // connection. bool SocketPair::operator==( const SocketPair &sp ) const { if( *(sp.m_pAddrA) == *(m_pAddrA) && *(sp.m_pAddrB) == *(m_pAddrB) && sp.m_portA == m_portA && sp.m_portB == m_portB ) { return true; } else if( *(sp.m_pAddrA) == *(m_pAddrB) && *(sp.m_pAddrB) == *(m_pAddrA) && sp.m_portA == m_portB && sp.m_portB == m_portA ) { return true; } else return false; } bool SocketPair::operator!=( const SocketPair &sp ) const { return !( sp==*this ); } uint32_t SocketPair::hash() const { uint32_t hash = 0; assert( m_portB > 0 ); hash = m_pAddrA->hash() % m_portB; assert( m_portA > 0 ); hash += m_pAddrB->hash() % m_portA; return hash; } tcptrack-1.4.3/src/SocketPair.h000066400000000000000000000014521251612363000163370ustar00rootroot00000000000000#ifndef SocketPair_H #define SocketPair_H #include "IPAddress.h" #include "TCPHeader.h" // a SocketPair is the combination of source/dest ports and addrs. // it is used as a fingerprint to identify connections. class SocketPair { public: SocketPair( IPAddress &naddra, portnum_t nporta, IPAddress &naddrb, portnum_t nportb ); SocketPair( const SocketPair & ); ~SocketPair(); bool operator==( const SocketPair & ) const; bool operator!=( const SocketPair & ) const; const IPAddress & addrA() const { return *m_pAddrA; }; const IPAddress & addrB() const { return *m_pAddrB; }; portnum_t portA() const { return m_portA; }; portnum_t portB() const { return m_portB; }; uint32_t hash() const; private: IPAddress *m_pAddrA; IPAddress *m_pAddrB; portnum_t m_portA; portnum_t m_portB; }; #endif tcptrack-1.4.3/src/SortedIterator.cc000066400000000000000000000066021251612363000174050ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #include "SortedIterator.h" #include "TCContainer.h" SortedIterator::SortedIterator( TCContainer *c ) { numcons = c->numConnections(); cons = (TCPConnection **) malloc(numcons*sizeof(TCPConnection *)); // fill up the array with pointers to the connections int index=0; for( tccmap::iterator i=c->conhash2.begin(); i!=c->conhash2.end(); i++ ) { cons[index]=(*i).second; ++index; } cur=0; } // this method does the actual work of sorting // it should be called from a thread that can afford to do that work. void SortedIterator::sort( int sort_type ) { if( numcons > 1 ) { if( sort_type == SORT_RATE ) qsort(cons,numcons,sizeof(TCPConnection *),compare_rate); else if( sort_type == SORT_BYTES ) qsort(cons,numcons,sizeof(TCPConnection *),compare_bytes); } } // get the next connection and advance our current location. // returns NULL if there are no more connections. TCPConnection * SortedIterator::getNext() { if( cur >= numcons ) return NULL; else return cons[cur++]; } void SortedIterator::rewind() { cur=0; } SortedIterator::~SortedIterator() { free(cons); } ///////////////////////////////////////////// // this is a callback function used from qsort in sort(). // it performs the comparison of the TCPConnection objects based on current throughput. int compare_rate(const void *c1, const void *c2) { TCPConnection * con1; TCPConnection * con2; con1=* (TCPConnection **) c1; con2=* (TCPConnection **) c2; if( con1->getPayloadBytesPerSecond() > con2->getPayloadBytesPerSecond() ) return -1; else if( con1->getPayloadBytesPerSecond() < con2->getPayloadBytesPerSecond() ) return 1; else { if( con1->getIdleSeconds() < con2->getIdleSeconds() ) return -1; else if( con1->getIdleSeconds() > con2->getIdleSeconds() ) return 1; else return 0; } } // this is a callback function used from qsort in sort(). // it performs the comparison of the TCPConnection objects based on total byte count. int compare_bytes(const void *c1, const void *c2) { TCPConnection * con1; TCPConnection * con2; con1=* (TCPConnection **) c1; con2=* (TCPConnection **) c2; if( con1->getPayloadByteCount() > con2->getPayloadByteCount() ) return -1; else if( con1->getPayloadByteCount() < con2->getPayloadByteCount() ) return 1; else { if( con1->getIdleSeconds() < con2->getIdleSeconds() ) return -1; else if( con1->getIdleSeconds() > con2->getIdleSeconds() ) return 1; else return 0; } } tcptrack-1.4.3/src/SortedIterator.h000066400000000000000000000025401251612363000172440ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef SORTEDITERATOR_H #define SORTEDITERATOR_H #define SORT_UN 1 #define SORT_RATE 2 #define SORT_BYTES 3 class TCContainer; class TCPConnection; int compare_rate(const void *, const void *); int compare_bytes(const void *, const void *); class SortedIterator { public: SortedIterator( TCContainer *c ); ~SortedIterator(); TCPConnection * getNext(); void sort( int sort_type ); void rewind(); private: TCPConnection **cons; unsigned int numcons; unsigned int cur; }; #endif tcptrack-1.4.3/src/TCContainer.cc000066400000000000000000000124001251612363000165750ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #include #include #include "TCPConnection.h" #include "Collector.h" #include "TCContainer.h" #include "SortedIterator.h" #include "defs.h" #include "util.h" #include "Guesser.h" //#include "IPv4Packet.h" #include "SocketPair.h" #include "TCPTrack.h" #include "GenericError.h" extern TCPTrack *app; TCContainer::TCContainer() { // // Start up maintenence thread // state=TSTATE_IDLE; pthread_attr_t attr; pthread_mutex_init( &conlist_lock, NULL ); pthread_mutex_init( &state_mutex, NULL ); if( pthread_attr_init( &attr ) != 0 ) throw GenericError("pthread_attr_init() failed"); pthread_attr_setstacksize( &attr, SS_TCC ); if( pthread_create(&maint_thread_tid,&attr,maint_thread_func,this) != 0 ) throw GenericError("pthread_create() failed."); state=TSTATE_RUNNING; purgeflag=true; } // remove closed connections? void TCContainer::purge( bool npurgeflag ) { purgeflag=npurgeflag; } // shut down the maintenence thread. prepare to delete this object. void TCContainer::stop() { pthread_mutex_lock(&state_mutex); if( state!=TSTATE_RUNNING ) { pthread_mutex_unlock(&state_mutex); return; } state=TSTATE_STOPPING; pthread_mutex_unlock(&state_mutex); // maint thread will notice that state is no longer RUNNING and // will exit. just wait for it... pthread_join(maint_thread_tid,NULL); state=TSTATE_DONE; } TCContainer::~TCContainer() { stop(); for( tccmap::iterator i=conhash2.begin(); i!=conhash2.end(); ) { TCPConnection *rm = (*i).second; tccmap::iterator tmp_i = i; i++; conhash2.erase(tmp_i); collector.collect(rm); } } SortedIterator * TCContainer::getSortedIteratorPtr() { return new SortedIterator(this); } // the sniffer (or PacketBuffer rather) hands us packets via this method. bool TCContainer::processPacket( TCPCapture &p ) { lock(); bool found = false; // a SocketPair is the combination of source/dest ports and addrs. // it is used as a fingerprint to identify connections. SocketPair sp( p.GetPacket().srcAddr(), p.GetPacket().tcp().srcPort(), p.GetPacket().dstAddr(), p.GetPacket().tcp().dstPort() ); // iterate over all packets that match this SocketPair and see if they'll // take the packet. pair pr = conhash2.equal_range(sp); for( tccmap::const_iterator i = pr.first; i!=pr.second; i++ ) { TCPConnection *ic = (*i).second; if( ic->acceptPacket( p ) ) { found=true; } } // is this a new connection? if( found==false && (p.GetPacket().tcp().syn()) && !(p.GetPacket().tcp().ack()) ) { TCPConnection *newcon = new TCPConnection( p ); found = true; conhash2.insert(tccmap::value_type(sp,newcon)); } // a stray packet. Feed it to guesser. Guesser tries to learn about // connections that we're not aware of. if( !found && app->detect ) { TCPConnection *newcon = guesser.addPacket(p); if( newcon != NULL ) conhash2.insert(tccmap::value_type(sp,newcon)); } unlock(); return found; } unsigned int TCContainer::numConnections() { return conhash2.size(); } // the maintenence thread recalculates averages and stuff. void TCContainer::maint_thread_run() { while( state==TSTATE_RUNNING || state==TSTATE_IDLE ) { struct timespec ts; if( app->fastmode ) { ts.tv_sec=0; ts.tv_nsec=FASTMODE_INTERVAL; } else { ts.tv_sec=1; ts.tv_nsec=0; } nanosleep(&ts,NULL); lock(); int numitems = 0; for( tccmap::iterator i=conhash2.begin(); i!=conhash2.end(); ) { TCPConnection *ic=(*i).second; numitems++; ic->recalcAvg(); // remove closed or stale connections. if( purgeflag==true ) { if( ( ic->isFinished() && ic->getIdleSeconds() > app->remto ) || ( ic->getState()==TCP_STATE_SYN_SYNACK && ic->getIdleSeconds()>SYN_SYNACK_WAIT ) || ( ic->getState()==TCP_STATE_FIN_FINACK && ic->getIdleSeconds()>FIN_FINACK_WAIT ) ) { TCPConnection *rm = ic; tccmap::iterator tmp_i = i; i++; conhash2.erase(tmp_i); collector.collect(rm); } else i++; } else { i++; } } unlock(); } } void TCContainer::lock() { pthread_mutex_lock(&conlist_lock); } void TCContainer::unlock() { pthread_mutex_unlock(&conlist_lock); } /////////////////// void *maint_thread_func( void * arg ) { TCContainer *c = (TCContainer *) arg; c->maint_thread_run(); return NULL; } tcptrack-1.4.3/src/TCContainer.h000066400000000000000000000067561251612363000164600ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef TCCONTAINER_H #define TCCONTAINER_H 1 #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #include #ifdef HAVE_HASH_MAP #include #elif HAVE_EXT_HASH_MAP #include #endif #include "headers.h" #include "TCPConnection.h" #include "Guesser.h" #include "Collector.h" #include "TCPConnection.h" #include "SortedIterator.h" #include "util.h" #include "TCPCapture.h" #include "SocketPair.h" #define TSTATE_IDLE 1 #define TSTATE_RUNNING 2 #define TSTATE_STOPPING 3 #define TSTATE_DONE 4 #ifdef GNU_CXX_NS using namespace __gnu_cxx; #endif ///// class TCCEqFunc : public unary_function { public: bool operator()( const SocketPair &sp1, const SocketPair &sp2 ) { if( sp1==sp2 ) return true; else return false; } }; // TODO: banged out off the top of my head... could be improved. class TCCHashFunc : public unary_function { public: uint32_t operator()(const SocketPair &sp) const { return sp.hash(); } }; typedef hash_map tccmap; //// class TCContainer { friend class SortedIterator; friend class TCCSnapshot; public: TCContainer(); ~TCContainer(); bool processPacket( TCPCapture &p ); unsigned int numConnections(); void stop(); void lock(); void unlock(); // do not call. only called from maint_thread_func. void maint_thread_run(); SortedIterator * getSortedIteratorPtr(); // remove closed connections? void purge(bool npurgeflag); private: // this Collector thing gets closed connections after a certain // delay. Right now it just deletes them. It could log their stats // or something... Collector collector; // this is a hash table that stores all the connections we're // currently tracking. tccmap conhash2; pthread_mutex_t conlist_lock; // this is for the maintenence thread, which runs regularly to // recalculate averages and anything else like that. pthread_t maint_thread_tid; bool run_maint_thread; // This thing takes stray packets (TCP packets for connections that // we're not tracking) and keeps track of them and tries to determine // the characteristics of connections that we're not keeping track of // (ie, connections that have no entry in conhash2). When it knows // a connection exists, it feeds it to TCContainer which keeps // track of it as usual. Guesser guesser; // for starting up, shutting down the maint thread. int state; pthread_mutex_t state_mutex; // remove closed connections? bool purgeflag; }; // maint thread main function. void *maint_thread_func( void * arg ); #endif tcptrack-1.4.3/src/TCPCapture.cc000066400000000000000000000010311251612363000163740ustar00rootroot00000000000000#include #include #include #include #include #include "TCPPacket.h" #include "TCPCapture.h" #include "util.h" TCPCapture::TCPCapture( TCPPacket *tcp_packet, struct timeval nts ) { m_packet = tcp_packet; m_ts = nts; } TCPCapture::TCPCapture( const TCPCapture & orig ) { m_packet = new TCPPacket( *orig.m_packet ); m_ts = orig.m_ts; } TCPCapture::~TCPCapture() { if( m_packet != NULL) delete m_packet; } TCPPacket & TCPCapture::GetPacket() const { return *m_packet; } tcptrack-1.4.3/src/TCPCapture.h000066400000000000000000000007331251612363000162460ustar00rootroot00000000000000#ifndef TCPCAPTURE_H #define TCPCAPTURE_H 1 #include #include "TCPPacket.h" /* An TCPCapture is a packet captured off the wire that is known to be * an TCP packet */ class TCPCapture { public: TCPCapture( TCPPacket* tcp_packet, struct timeval nts ); TCPCapture( const TCPCapture &orig ); ~TCPCapture(); TCPPacket & GetPacket() const; struct timeval timestamp() const { return m_ts; }; private: TCPPacket *m_packet; struct timeval m_ts; }; #endif tcptrack-1.4.3/src/TCPConnection.cc000066400000000000000000000212071251612363000170770ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #include #include #include #include #ifdef HAVE_PCAP_PCAP_H #include #elif HAVE_PCAP_H #include #endif #include #include "headers.h" #include "TCPConnection.h" #include "util.h" #include "TCPTrack.h" #include "TCPPacket.h" #include "SocketPair.h" extern TCPTrack *app; TCPConnection::~TCPConnection() { delete srcaddr; delete dstaddr; delete endpts; } bool TCPConnection::fastMode() { return app->fastmode; } bool TCPConnection::isFinished() { if( state == TCP_STATE_CLOSED || state == TCP_STATE_RESET ) return true; return false; } IPAddress & TCPConnection::srcAddr() { return *srcaddr; } portnum_t TCPConnection::srcPort() { return srcport; } IPAddress & TCPConnection::dstAddr() { return *dstaddr; } portnum_t TCPConnection::dstPort() { return dstport; } int TCPConnection::getPacketCount() { return packet_count; } long TCPConnection::getPayloadByteCount() { return payload_byte_count; } int TCPConnection::getState() { return state; } TCPConnection::TCPConnection( TCPCapture &p ) { srcaddr = p.GetPacket().srcAddr().Clone(); dstaddr = p.GetPacket().dstAddr().Clone(); srcport = p.GetPacket().tcp().srcPort(); dstport = p.GetPacket().tcp().dstPort(); packet_count=1; if( p.GetPacket().tcp().syn() ) state = TCP_STATE_SYN_SYNACK; else state = TCP_STATE_UP; // init per-second stats counters this_second = time(0); packets_this_second = 1; payload_bytes_this_second = p.GetPacket().payloadLen()-p.GetPacket().tcp().headerLen(); all_bytes_this_second = p.GetPacket().totalLen(); payload_bytes_last_second = 0; all_bytes_last_second = 0; payload_byte_count = p.GetPacket().payloadLen() - p.GetPacket().tcp().headerLen(); last_pkt_ts = time(NULL); activity_toggle=false; /* if( fastMode() ) { struct avgstat s; s.ts = p->pcap.ts; s.size = ntohs(p->ip->ip_len)-(IP_HEADER_LEN+TCP_HEADER_LEN); avgstack.push_front(s); } */ fm_bps=0; finack_from_dst=0; finack_from_src=0; recvd_finack_from_src=false; recvd_finack_from_dst=false; endpts = new SocketPair( *srcaddr, srcport, *dstaddr, dstport); } void TCPConnection::purgeAvgStack() { struct timeval now; gettimeofday(&now,NULL); list::iterator i; for( i=avgstack.begin(); i!=avgstack.end(); i++ ) { struct avgstat cur = *i; struct timeval top = cur.ts; if( top.tv_sec <= now.tv_sec-2 ) { avgstack.erase(i,avgstack.end()); break; } } } void TCPConnection::fastRecalcAvg() { struct timeval now; gettimeofday(&now,NULL); unsigned int bytes_past_second=0; unsigned int packets_past_second=0; purgeAvgStack(); list::iterator i; for( i=avgstack.begin(); i!=avgstack.end(); i++ ) { struct avgstat cur = *i; struct timeval top = cur.ts; if( top.tv_sec == now.tv_sec ) if( top.tv_usec <= now.tv_usec ) { bytes_past_second += cur.size; packets_past_second++; } if( top.tv_sec == now.tv_sec-1 ) if( top.tv_usec >= now.tv_usec ) { bytes_past_second += cur.size; packets_past_second++; } } fm_bps=bytes_past_second; fm_pps=packets_past_second; } void TCPConnection::slowRecalcAvg() { if( this_second != time(0) ) { packets_last_second = packets_this_second; payload_bytes_last_second = payload_bytes_this_second; all_bytes_last_second = all_bytes_this_second; this_second = time(0); packets_this_second = 0; payload_bytes_this_second = 0; all_bytes_this_second = 0; } } // recalculate packets/bytes per second counters // should be called once per second void TCPConnection::recalcAvg() { if( fastMode() ) fastRecalcAvg(); else slowRecalcAvg(); } time_t TCPConnection::getLastPktTimestamp() { return last_pkt_ts; } bool TCPConnection::match( IPAddress &sa, IPAddress &da, portnum_t sp, portnum_t dp ) { if( ! (*srcaddr == sa) ) return false; if( !( *dstaddr == da) ) return false; if( dp != dstport || sp != srcport ) return false; return true; } time_t TCPConnection::getIdleSeconds() { return time(NULL) - getLastPktTimestamp(); } void TCPConnection::updateCountersForPacket( TCPCapture &p ) { if( fastMode() ) { struct avgstat s; s.ts = p.timestamp(); s.size = p.GetPacket().payloadLen() - p.GetPacket().tcp().headerLen(); avgstack.push_front(s); } else { if( this_second != time(0) ) { packets_last_second = packets_this_second; payload_bytes_last_second = payload_bytes_this_second; all_bytes_last_second = all_bytes_this_second; this_second = time(0); packets_this_second = 1; payload_bytes_this_second = p.GetPacket().payloadLen() - p.GetPacket().tcp().headerLen(); all_bytes_this_second = p.GetPacket().totalLen(); } else { packets_this_second++; payload_bytes_this_second += p.GetPacket().payloadLen() - p.GetPacket().tcp().headerLen(); all_bytes_this_second += p.GetPacket().totalLen(); } payload_byte_count += p.GetPacket().payloadLen() - p.GetPacket().tcp().headerLen(); } } bool TCPConnection::acceptPacket( TCPCapture &cap ) { TCPPacket *p = &(cap.GetPacket()); unsigned int payloadlen = p->payloadLen() - p->tcp().headerLen(); if( state == TCP_STATE_CLOSED ) return false; if( match(p->srcAddr(), p->dstAddr(), p->tcp().srcPort(), p->tcp().dstPort()) || match(p->dstAddr(), p->srcAddr(), p->tcp().dstPort(), p->tcp().srcPort()) ) { ++packet_count; activity_toggle=true; // recalculate packets/bytes per second counters updateCountersForPacket(cap); if( p->tcp().fin() ) { // if this is a fin going from cli->srv // expect an appropriate ack from server if( p->srcAddr() == *srcaddr ) { if( payloadlen==0 ) finack_from_dst = p->tcp().getSeq()+1; else finack_from_dst = p->tcp().getSeq()+payloadlen+1; recvd_finack_from_dst=false; } if( p->srcAddr() == *dstaddr ) { if( payloadlen==0 ) finack_from_src = p->tcp().getSeq()+1; else finack_from_src = p->tcp().getSeq()+payloadlen+1; recvd_finack_from_src=false; } } if( state == TCP_STATE_SYNACK_ACK ) { if( p->tcp().ack() ) state = TCP_STATE_UP; // connection up } else if( state == TCP_STATE_SYN_SYNACK ) { if( p->tcp().syn() && p->tcp().ack() ) state = TCP_STATE_SYNACK_ACK; // SYN|ACK sent, awaiting ACK } else if( state == TCP_STATE_UP ) { if( p->tcp().fin() ) state = TCP_STATE_FIN_FINACK; // FIN sent, awaiting FIN|ACK } else if( state == TCP_STATE_FIN_FINACK ) { if( p->tcp().ack() ) { if( p->srcAddr() == *srcaddr ) if( p->tcp().getAck() == finack_from_src ) recvd_finack_from_src=true; if( p->srcAddr() == *dstaddr ) if( p->tcp().getAck() == finack_from_dst ) recvd_finack_from_dst=true; if( recvd_finack_from_src && recvd_finack_from_dst ) state=TCP_STATE_CLOSED; } } if( p->tcp().rst() ) state = TCP_STATE_RESET; last_pkt_ts = time(NULL); return true; } // packet rejected because this connection is closed. return false; } int TCPConnection::getPacketsPerSecond() { if( fastMode() ) return fm_pps; else return packets_last_second; } unsigned int TCPConnection::getPayloadBytesPerSecond() { if( fastMode() ) return fm_bps; else return payload_bytes_last_second; } int TCPConnection::getAllBytesPerSecond() { if( fastMode() ) { // TODO: at some point when this handles ipv6, this alg will // have to be changed. return fm_pps*(IP_HEADER_LEN+TCP_HEADER_LEN)+fm_bps; } else return all_bytes_last_second; } // this implements an activity "light" for this connection... should work // just like the send/receive light on a modem. // needs to be called frequently (at least once per second) to be of any use. bool TCPConnection::activityToggle() { bool r = activity_toggle; activity_toggle=false; return r; } SocketPair & TCPConnection::getEndpoints() { return *endpts; } tcptrack-1.4.3/src/TCPConnection.h000066400000000000000000000117651251612363000167510ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef TCPCONNECTION_H #define TCPCONNECTION_H 1 #include #include #include #include #include "util.h" #include "TCPPacket.h" #include "TCPHeader.h" #include "TCPCapture.h" #include "SocketPair.h" #define TCP_STATE_SYN_SYNACK 1 // initial SYN sent, waiting for SYN ACK #define TCP_STATE_SYNACK_ACK 2 // SYN&ACK response sent, waiting for ACK #define TCP_STATE_UP 3 // SYNACK response sent #define TCP_STATE_FIN_FINACK 4 #define TCP_STATE_CLOSED 5 #define TCP_STATE_RESET 6 using namespace std; class TCPConnection { public: // constructor, which needs the initial packet that created this // connection, or any packet that is going from client->server. // See comments in Guesser.cc for an explanation... TCPConnection( TCPCapture &p ); ~TCPConnection(); // returns true if the given addresses/ports are relevant to this // connection. bool match(IPAddress &sa, IPAddress &da, portnum_t sp, portnum_t dp); // see if packet p is relevant to this connection. // if it is, true will be returned and this object's internal // state will be changed to relect the new packet. bool acceptPacket( TCPCapture &p ); // get the addresses/ports which are the endpoints for this // connection. IPAddress & srcAddr(); portnum_t srcPort(); IPAddress & dstAddr(); portnum_t dstPort(); // returns one of the TCP_STATE_* values reflecting the connection's // state. int getState(); // returns true if this connection is closed and no more traffic // is expected for it. bool isFinished(); // timestamp of last packet sent either way time_t getLastPktTimestamp(); // number of seconds since last packet sent either way time_t getIdleSeconds(); // called to recalculate averages and perform any other internal // updates to counters and stuff. // should be called at least once a second. // if fastMode is enabled, calling it more freqently will keep // counters closer to real time. // if fastMode is not enabled, there's no point in calling it more // than once a second, but it won't hurt. void recalcAvg(); // this implements an "activity light" that works just like the // activity LEDs on a modem. returns true if a packet was sent // since the last time it was called. bool activityToggle(); // number of packets sent either way in total for this connection int getPacketCount(); // number of payload bytes sent either way in total for this connection long getPayloadByteCount(); // average number of packets per second this connection is doing int getPacketsPerSecond(); // average number of packets per second this connection is doing // this counts only the packet's actual tcp payload, no headers unsigned int getPayloadBytesPerSecond(); // average number of bytes per second this connection is doing // this counts the tcp and ip headers (but not link layer header) int getAllBytesPerSecond(); // returns a key that fairly uniquely identifies this connection // used for hashing purposes //int getKey(); // a SocketPair is two IPAddresses and two TCP port numbers. // The pair of each represents this connections src/dst addrs & ports. SocketPair & getEndpoints(); private: bool fastMode(); void purgeAvgStack(); void fastRecalcAvg(); void slowRecalcAvg(); void updateCountersForPacket( TCPCapture &p ); unsigned long finack_from_dst; unsigned long finack_from_src; bool recvd_finack_from_src; bool recvd_finack_from_dst; SocketPair *endpts; portnum_t srcport; // client port portnum_t dstport; // server port IPAddress *srcaddr; // client addr IPAddress *dstaddr; // server addr int state; time_t last_pkt_ts; int packet_count; long payload_byte_count; bool activity_toggle; list avgstack; unsigned int fm_bps; // bytes per second unsigned int fm_pps; // packets per second // per-second stats time_t this_second; unsigned int packets_this_second; unsigned int payload_bytes_this_second; // payload only unsigned int all_bytes_this_second; // ip hdr + tcp hdr + payload unsigned int packets_last_second; unsigned int payload_bytes_last_second; // payload only unsigned int all_bytes_last_second; // ip hdr + tcp hdr + payload }; #endif tcptrack-1.4.3/src/TCPHeader.cc000066400000000000000000000033251251612363000161710ustar00rootroot00000000000000#include #include #include #include "TCPHeader.h" #include "headers.h" TCPHeader::TCPHeader( const u_char *data, unsigned int data_len ) { struct sniff_tcp *tcp = (struct sniff_tcp *)data; assert( tcp->th_off >= 5 ); // tcp header is at least 20 bytes long. src = ntohs(tcp->th_sport); dst = ntohs(tcp->th_dport); seqn=ntohl(tcp->th_seq); ackn=ntohl(tcp->th_ack); flags=tcp->th_flags; header_len=tcp->th_off*4; } TCPHeader::TCPHeader( TCPHeader & orig ) { seqn = orig.seqn; ackn = orig.ackn; src = orig.src; dst = orig.dst; flags = orig.flags; header_len = orig.header_len; } bool TCPHeader::fin() const { return flags&FIN; } bool TCPHeader::syn() const { return flags&SYN; } bool TCPHeader::rst() const { return flags&RST; } bool TCPHeader::psh() const { return flags&PSH; } bool TCPHeader::ack() const { return flags&ACK; } bool TCPHeader::urg() const { return flags&URG; } bool TCPHeader::ece() const { return flags&ECE; } bool TCPHeader::cwr() const { return flags&CWR; } seq_t TCPHeader::getSeq() const { return seqn; } seq_t TCPHeader::getAck() const { return ackn; } portnum_t TCPHeader::srcPort() const { return src; } portnum_t TCPHeader::dstPort() const { return dst; } std::ostream & operator<<( std::ostream &out, const TCPHeader &tcp ) { out << "ports=" << tcp.srcPort() << "->" << tcp.dstPort(); out << " seq=" << tcp.getSeq(); out << " ack=" << tcp.getAck(); out << " flags="; if( tcp.fin() ) out << " FIN"; if( tcp.syn() ) out << " SYN"; if( tcp.rst() ) out << " RST"; if( tcp.psh() ) out << " PSH"; if( tcp.ack() ) out << " ACK"; if( tcp.urg() ) out << " URG"; if( tcp.ece() ) out << " ECE"; if( tcp.cwr() ) out << " CWR"; return out; } tcptrack-1.4.3/src/TCPHeader.h000066400000000000000000000016711251612363000160350ustar00rootroot00000000000000#ifndef TCPHEADER_H #define TCPHEADER_H 1 #define __FAVOR_BSD 1 #include typedef unsigned short portnum_t; typedef unsigned int seq_t; const uint8_t FIN = 0x01; const uint8_t SYN = 0x02; const uint8_t RST = 0x04; const uint8_t PSH = 0x08; const uint8_t ACK = 0x10; const uint8_t URG = 0x20; const uint8_t ECE = 0x40; const uint8_t CWR = 0x80; class TCPHeader { public: TCPHeader( const u_char *data, unsigned int data_len ); TCPHeader( TCPHeader & orig ); seq_t getSeq() const; seq_t getAck() const; bool isFlagSet(unsigned int); unsigned short headerLen() const { return header_len; }; portnum_t srcPort() const; portnum_t dstPort() const; bool fin() const; bool syn() const; bool rst() const; bool psh() const; bool ack() const; bool urg() const; bool ece() const; bool cwr() const; private: seq_t seqn; seq_t ackn; portnum_t src; portnum_t dst; unsigned char flags; unsigned short header_len; }; #endif tcptrack-1.4.3/src/TCPPacket.cc000066400000000000000000000045271251612363000162150ustar00rootroot00000000000000#include #include #include #include "IPv4Address.h" #include "IPv6Address.h" #include "TCPPacket.h" #include "headers.h" #include "util.h" TCPPacket::TCPPacket( const u_char *data, unsigned int data_len ) { struct sniff_ip *ip = (struct sniff_ip *)data; if( ip->ip_v == 4) { // make sure that the various length fields are long enough to contain // an IPv4 header (at least 20 bytes). assert( data_len >= 20 ); assert( ntohs(ip->ip_len) >= 20 ); // TODO: is this right? assert( ip->ip_hl >= 5 ); total_len=ntohs(ip->ip_len); m_src = new IPv4Address(ip->ip_src); m_dst = new IPv4Address(ip->ip_dst); header_len=ip->ip_hl*4; } else if( ip->ip_v == 6 ) { struct sniff_ip6 *ip6 = (struct sniff_ip6 *)data; total_len = htons(ip6->ip_len); header_len = IP6_HEADER_LEN; m_src = new IPv6Address(ip6->ip_src); m_dst = new IPv6Address(ip6->ip_dst); } else { // Unknown protocol. The sniffer should have protected us. assert( false ); } m_tcp_header = new TCPHeader(data + header_len, data_len - header_len); m_socketpair = new SocketPair(*m_src, m_tcp_header->srcPort(), *m_dst, m_tcp_header->dstPort()); } TCPPacket::TCPPacket( const TCPPacket &orig ) { m_src = orig.srcAddr().Clone(); m_dst = orig.dstAddr().Clone(); total_len = orig.total_len; header_len = orig.header_len; m_tcp_header = new TCPHeader( *orig.m_tcp_header ); m_socketpair = new SocketPair( *orig.m_socketpair ); } TCPPacket::~TCPPacket() { delete m_src; delete m_dst; delete m_tcp_header; delete m_socketpair; } unsigned int TCPPacket::totalLen() const { return total_len; } IPAddress & TCPPacket::srcAddr() const { return *m_src; } IPAddress & TCPPacket::dstAddr() const { return *m_dst; } std::ostream & operator<<( std::ostream &out, const TCPPacket &ip ) { out << "IP: "; out << "src=" << ip.srcAddr(); out << " dst=" << ip.dstAddr(); out << " len=" << ip.totalLen(); return out; } unsigned int TCPPacket::payloadLen() const { return total_len-header_len; } TCPPacket* TCPPacket::newTCPPacket( const u_char *data, unsigned int data_len ) { struct sniff_ip *ip = (struct sniff_ip *)data; if( ip->ip_v == 4 && ip->ip_p != IPPROTO_TCP ) return NULL; if( ip->ip_v == 6 ) { struct sniff_ip6 *ip = (struct sniff_ip6 *)data; if( ip->ip_next != IPPROTO_TCP ) return NULL; } return new TCPPacket(data,data_len); } tcptrack-1.4.3/src/TCPPacket.h000066400000000000000000000022131251612363000160450ustar00rootroot00000000000000#ifndef TCPPACKET_H #define TCPPACKET_H 1 #define __FAVOR_BSD 1 #include // needed #include "IPAddress.h" #include "TCPHeader.h" #include "SocketPair.h" class TCPPacket { public: /* stuff to do in constructor: * ensure data_len >= ip header len field * ensure version is 4 * ensure total len >= ip header len * verify checksum */ TCPPacket( const u_char *data, unsigned int data_len ); TCPPacket( const TCPPacket &orig ); ~TCPPacket(); unsigned int totalLen() const; unsigned long len() const { return total_len; }; unsigned int payloadLen() const; IPAddress & srcAddr() const; IPAddress & dstAddr() const; TCPHeader & tcp() const { return *m_tcp_header; } SocketPair & sockpair() const { return *m_socketpair; } static TCPPacket * newTCPPacket( const u_char *data, unsigned int data_len ); private: unsigned int total_len; unsigned short header_len; // these are pointers because the IPAddress class is not modifiable // after initialization. The constructor of this class can not // immediately set them. IPAddress *m_src; IPAddress *m_dst; TCPHeader *m_tcp_header; SocketPair *m_socketpair; }; #endif tcptrack-1.4.3/src/TCPTrack.cc000066400000000000000000000073351251612363000160520ustar00rootroot00000000000000#include #include #include #include #include #include "TCPTrack.h" #include "AppError.h" #include "PcapError.h" #include "GenericError.h" #include "defs.h" TCPTrack *app=NULL; pthread_cond_t quitflag=PTHREAD_COND_INITIALIZER; pthread_mutex_t quitflag_mutex=PTHREAD_MUTEX_INITIALIZER; TCPTrack::TCPTrack() { ferr=""; remto=2; fastmode=false; pthread_mutex_init( &ferr_lock, NULL ); } void TCPTrack::run( int argc, char **argv ) { struct config cf = parseopts(argc,argv); remto=cf.remto; fastmode=cf.fastmode; detect=cf.detect; promisc=cf.promisc; c = new TCContainer(); pb = new PacketBuffer(); s = new Sniffer(); ui = new TextUI(c); try { s->dest(pb); // sniffer, send your packets to PacketBuffer pb->dest(c); // PacketBuffer, send your packets to the TCContainer // init() on these objects performs constructor-like actions, // only they may throw exceptions. Constructors don't. ui->init(); s->init(cf.iface,cf.fexp,cf.test_file); pb->init(); // now let these objects run the application. // just sit here until someone calls shutdown(), // which sets the quitflag condition variable. pthread_mutex_lock(&quitflag_mutex); pthread_cond_wait(&quitflag,&quitflag_mutex); pthread_mutex_unlock(&quitflag_mutex); // if an exception happened in another thread, it will be passed // to us via the fatal() method, which puts the error in string // form in this ferr variable. // TODO: This ferr thing is sloppy. should pass an actual // exception object. if( ferr != "" ) throw GenericError(ferr); // shut everything down cleanly. ui->stop(); s->dest(); pb->dest(); c->stop(); delete s; } catch( const AppError &e ) { // detach the objects from each other. // other threads may be running after a delete and may follow a // bad pointer to a just deleted object otherwise. s->dest(); pb->dest(); delete ui; delete s; delete pb; delete c; // This tries to reset the terminal to a sane mode, in case // TextUI couldn't do it cleanly. TextUI::reset(); cout << e.msg() <] -i [] [-T 0 ) { if( o=='h' ) { printusage(argc,argv); exit(0); } if( o=='v' ) { printf("%s v%s\n",PACKAGE,VERSION); exit(0); } if( o=='i' ) { cf.iface = optarg; got_iface=true; } if( o=='r' ) cf.remto = atoi(optarg); if( o=='f' ) cf.fastmode=true; if( o=='d' ) cf.detect=false; if( o=='p' ) cf.promisc=false; if( o=='T' ) { cf.test_file=optarg; got_iface=true; // Don't complain if we don't get an interface. A test file is OK too. } } if( ! got_iface ) { printusage(argc,argv); exit(1); } std::string fexp; for( int i=optind; i #include #include "util.h" #include "Sniffer.h" #include "TextUI.h" #include "PacketBuffer.h" #include "TCContainer.h" using namespace std; class TCPTrack { public: TCPTrack(); void run( int argc, char **argv ); // run tcptrack void shutdown(); // quit tcptrack // general tcptrack configuration settings // should probably move these later time_t remto; // closed connection removal timeout bool fastmode; // fastmode enabled or disabled? bool detect; // detect pre-existing connections? bool promisc; // enable promisc mode? // other threads call this when they have an unhandled exception. // shuts tcptrack down abruptly and prints the error. void fatal( string msg ); private: Sniffer *s; TextUI *ui; PacketBuffer *pb; TCContainer *c; string ferr; // fatal error message sent from another thread pthread_mutex_t ferr_lock; }; void printusage(int argc, char **argv); struct config parseopts(int argc, char **argv); #endif tcptrack-1.4.3/src/TextUI.cc000066400000000000000000000202731251612363000156150ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "TextUI.h" #include #include #include #include #include #include "util.h" #include "defs.h" #include "TCPTrack.h" #include "GenericError.h" extern TCPTrack *app; TextUI::TextUI( TCContainer *c ) { container = c; iter=NULL; doffset=0; state=USTATE_IDLE; paused=false; sort_type=SORT_UN; pthread_mutex_init( &state_mutex, NULL ); } void TextUI::init() { // // Initialize ncurses. // TODO: make these exceptions more specific & meaningful. // WINDOW *w=initscr(); if( w==NULL ) throw GenericError("Unable to initialize ncurses display: initscr returned NULL."); keypad(w,TRUE); int x,y; getmaxyx(w,y,x); // this is an ncurses macro if( x<80 ) throw GenericError("tcptrack requires a screen at least 80 columns wide to run."); if( y<3 ) throw GenericError("tcptrack requires a screen at least 3 rows tall to run."); size_x=x; size_y=y; bottom=y; // // Set up and run the displayer thread. // run_displayer = true; pthread_attr_t attr; if( pthread_attr_init( &attr ) != 0 ) throw GenericError("pthread_attr_init() failed"); pthread_attr_setstacksize( &attr, SS_TUI ); if( pthread_create(&displayer_tid,&attr,displayer_thread_func,this) != 0 ) throw GenericError("pthread_create() returned an error."); state=USTATE_RUNNING; } void TextUI::stop() { pthread_mutex_lock(&state_mutex); if( state != USTATE_RUNNING ) { pthread_mutex_unlock(&state_mutex); return; } state=USTATE_STOPPING; pthread_mutex_unlock(&state_mutex); // now that state is set to USTATE_STOPPING, // the display draw loop will see this and exit. just wait for it. pthread_join(displayer_tid,NULL); state=USTATE_DONE; } TextUI::~TextUI() { stop(); } // main drawer thread loop void TextUI::displayer_run() { // used for select(), to grab keyboard input when there is some. fd_set fdset; struct timeval tv; int rv; iter=container->getSortedIteratorPtr(); while( state==USTATE_RUNNING || state==USTATE_IDLE ) { FD_ZERO(&fdset); FD_SET(0,&fdset); tv.tv_sec=0; tv.tv_usec=100; rv=select(1,&fdset,NULL,NULL,&tv); if( rv ) { int c = getch(); if( c==KEY_DOWN ) { ++doffset; // this is checked for sanity later } else if( c==KEY_UP ) { if( doffset>0 ) --doffset; } else if( c=='q' ) { app->shutdown(); } else if( c=='s' ) { switch( sort_type ) { case SORT_UN: sort_type=SORT_RATE; break; case SORT_RATE: sort_type=SORT_BYTES; break; case SORT_BYTES: sort_type=SORT_UN; break; } } else if( c=='p' ) { if( paused==true ) { // going from paused to unpaused paused=false; container->purge(true); } else { // going from unpaused to paused paused=true; container->purge(false); } } } container->lock(); // check the offset into the container for sanity. if( doffset>0 ) { if( container->numConnections()>0 ) { if( doffset >= container->numConnections() ) doffset = container->numConnections()-1; } else { doffset=0; } } // if we aren't reusing an old iterator (ie, if unpaused), // get a fresh one. if( iter==NULL ) iter=container->getSortedIteratorPtr(); drawui(); if( paused==false ) { // gonna get a new one next time if not paused... // so can this one. delete iter; iter=NULL; } container->unlock(); } endwin(); } void TextUI::drawui() { int row=1; erase(); attron(A_REVERSE); move(0,0); printw(" "); move(0,1); printw("Client"); move(0,23); printw("Server"); move(0,45); printw("State"); move(0,58); printw("Idle"); move(0,63); printw("A"); move(0,65); printw("Speed"); attroff(A_REVERSE); move(1,0); SortedIterator * i=iter; i->rewind(); int Bps_total=0; // the total speed while( TCPConnection *ic=i->getNext() ) Bps_total+=ic->getPayloadBytesPerSecond(); i->rewind(); if( sort_type != SORT_UN ) i->sort( sort_type ); unsigned int ic_i=0; // for scrolling while( TCPConnection *ic=i->getNext() ) { if( row == size_y-2 ) break; ++ic_i; if( ic_i <= doffset ) continue; if( paused==false && (ic->getState() == TCP_STATE_CLOSED || ic->getState() == TCP_STATE_RESET) && time(NULL) - ic->getLastPktTimestamp() > app->remto ) { continue; } move(row,1); printw("%s:%d", ic->srcAddr().ptr(), ic->srcPort() ); if( ic->srcAddr().GetType() == 6 ) row++; move(row,23); printw("%s:%d", ic->dstAddr().ptr(), ic->dstPort()); if( ic->srcAddr().GetType() == 6 ) row--; move(row,45); printw(" "); move(row,45); if( ic->getState() == TCP_STATE_SYN_SYNACK ) printw("SYN_SENT"); else if( ic->getState() == TCP_STATE_SYNACK_ACK ) printw("SYN|ACK-ACK"); else if( ic->getState() == TCP_STATE_UP ) printw("ESTABLISHED"); else if( ic->getState() == TCP_STATE_FIN_FINACK ) printw("CLOSING"); else if( ic->getState() == TCP_STATE_CLOSED ) printw("CLOSED"); else if( ic->getState() == TCP_STATE_RESET ) printw("RESET"); move(row,58); if( ic->getIdleSeconds() < 60 ) printw("%ds",ic->getIdleSeconds()); else if( ic->getIdleSeconds() > 59 ) printw("%dm",ic->getIdleSeconds()/60); else if( ic->getIdleSeconds() > 3559 ) printw("%dh",ic->getIdleSeconds()/3600); move(row,63); if( ic->activityToggle() ) printw("*"); else printw(" "); move(row,65); unsigned int Bps = ic->getPayloadBytesPerSecond(); print_bps(Bps); if( ic->srcAddr().GetType() == 6 ) row++; row++; } attron(A_REVERSE); move(bottom-2,0); printw(" "); move(bottom-2,1); printw("TOTAL"); move(bottom-2,65); print_bps(Bps_total); move(bottom-1,0); printw(" "); move(bottom-1,1); if( container->numConnections() > 0 ) printw("Connections %d-%d of %d",doffset+1,ic_i,container->numConnections()); else printw("Connections 0-0 of 0"); move(bottom-1,46); if( paused==true ) { attron(A_UNDERLINE); printw("P"); attroff(A_UNDERLINE); printw("aused"); } else { printw("Un"); attron(A_UNDERLINE); printw("p"); attroff(A_UNDERLINE); printw("aused"); } move(bottom-1,56); switch( sort_type ) { case SORT_UN: printw("Un"); attron(A_UNDERLINE); printw("s"); attroff(A_UNDERLINE); printw("orted"); break; case SORT_RATE: attron(A_UNDERLINE); printw("S"); attroff(A_UNDERLINE); printw("orted by rate"); break; case SORT_BYTES: attron(A_UNDERLINE); printw("S"); attroff(A_UNDERLINE); printw("orted by bytes"); break; } attroff(A_REVERSE); refresh(); } // display the speed with the right format void TextUI::print_bps(int Bps) { if( Bps < 1024 ) printw("%d B/s",Bps); if( Bps >= 1024 && Bps < 1024*1024 ) printw("%d KB/s",Bps/1024); if( Bps >= 1024*1024 && Bps <= 99999999 ) printw("%d MB/s",Bps/(1024*1024)); if( Bps > 99999999 ) // not enough room to display it printw("LUDICROUS"); // LUDICROUS SPEED!! } // reset the terminal. used only for unclean exits. void TextUI::reset() { endwin(); } ///////// void *displayer_thread_func( void *arg ) { TextUI *ui = (TextUI *) arg; ui->displayer_run(); return NULL; } tcptrack-1.4.3/src/TextUI.h000066400000000000000000000044101251612363000154520ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef TEXTUI_H #define TEXTUI_H 1 #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include #include #include "TCContainer.h" #include "SortedIterator.h" #define USTATE_IDLE 1 #define USTATE_RUNNING 2 #define USTATE_STOPPING 3 #define USTATE_DONE 4 class TextUI { public: TextUI( TCContainer * ); ~TextUI(); void init(); // like a constructor, but exceptions can be thrown. void stop(); // try to make the terminal modes sane again during an unclean // exit. static void reset(); // do not call. used as pthread_create callback. void displayer_run(); private: void drawui(); // draw the screen. void print_bps(int); // display the speed with the right format bool run_displayer; // display packets in here. TCContainer *container; // an iterator over connections in the container. SortedIterator * iter; // number of the last line on the screen. int bottom; // size of the terminal int size_x; int size_y; // how far into the container we start the listing... for scrolling. unsigned int doffset; int state; pthread_mutex_t state_mutex; bool paused; int sort_type; // TODO: moving this pthread_t var up to the top of the private block // and adding an int in the middle will cause initscr() to segfault // (deep in initscr)... should figure out why someday. pthread_t displayer_tid; }; void *displayer_thread_func( void * ); #endif tcptrack-1.4.3/src/defs.h000066400000000000000000000026061251612363000152160ustar00rootroot00000000000000// after a connection has been closed for this many seconds, // remove it #define CLOSED_PURGE 2 // the display will be updated every DISPLAY_REFRESH nanoseconds. //#define DISPLAY_REFRESH 10000 #define DISPLAY_REFRESH 1000000 // the packet queues will be processed every PKTBUF_PROC nanoseconds. #define PKTBUF_PROC 10000 // this is the amount of time pcap_loop will wait for more packets before // passing what it has to tcptrack. this is milliseconds. // This is passed to the third argument (to_ms) to pcap_open_live #define POL_TO_MS 10 // the amount of time we will wait for a connection to finish opening after // the initial syn has been sent before we dicard it #define SYN_SYNACK_WAIT 30 // connections in the CLOSING state are removed after this timeout #define FIN_FINACK_WAIT 60 // pcap snaplen. Should be as long as biggest link level header len + // vlan header len + IP header len + tcp header len. #define SNAPLEN 100 // when fast mode is enabled, averages will be recalculated this freqently. // if no fast mode, once per second. //#define FASTMODE_INTERVAL 250000000 // one quarter of a second #define FASTMODE_INTERVAL 100000000 // one tenth of a second // stack sizes for the different threads #define SS_PB 2048 // PacketBuffer #define SS_S 4096 // Sniffer 2048 -> segfault on freebsd #define SS_TCC 4096 // TCContainer #define SS_TUI 5120 // TextUI. 4096 -> segfault on solaris tcptrack-1.4.3/src/headers.h000066400000000000000000000072561251612363000157160ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef HEADERS_H #define HEADERS_H 1 #define __FAVOR_BSD 1 #include // needed on BSD #include #include #include #include "config.h" #ifndef BYTE_ORDER #ifdef WORDS_BIGENDIAN #define BYTE_ORDER BIG_ENDIAN #else #define BYTE_ORDER LITTLE_ENDIAN #endif // ifdef WORDS_BIGENDIAN #endif // ifndef BYTE_ORDER #define IP_HEADER_LEN 20 #define IP6_HEADER_LEN 40 #define TCP_HEADER_LEN 20 #define ENET_HEADER_LEN 14 #define SLL_HEADER_LEN 16 #define VLAN_HEADER_LEN 4 #ifndef ETHER_ADDR_LEN #define ETHER_ADDR_LEN 6 #endif #ifndef ETHERTYPE_VLAN #define ETHERTYPE_VLAN 0x8100 #endif #ifndef ETHERTYPE_IPV6 #define ETHERTYPE_IPV6 0x86dd #endif /* Ethernet header */ struct sniff_ethernet { u_char ether_dhost[ETHER_ADDR_LEN]; /* Destination host address */ u_char ether_shost[ETHER_ADDR_LEN]; /* Source host address */ u_short ether_type; /* IP? ARP? RARP? etc */ }; /* IP header */ struct sniff_ip { #ifdef WORDS_BIGENDIAN u_int ip_v:4, /* version */ ip_hl:4; /* header length */ #else u_int ip_hl:4, /* header length */ ip_v:4; /* version */ #endif u_char ip_tos; /* type of service */ u_short ip_len; /* total length */ u_short ip_id; /* identification */ u_short ip_off; /* fragment offset field */ #define IP_RF 0x8000 /* reserved fragment flag */ #define IP_DF 0x4000 /* dont fragment flag */ #define IP_MF 0x2000 /* more fragments flag */ #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ u_char ip_ttl; /* time to live */ u_char ip_p; /* protocol */ u_short ip_sum; /* checksum */ struct in_addr ip_src,ip_dst; /* source and dest address */ }; struct sniff_ip6 { uint32_t ip_v6:4; /* version */ uint32_t ip_class:8; /* traffic class */ uint32_t ip_flow:20; /* flow label */ uint32_t ip_len:16; /* payload length */ uint32_t ip_next:8; /* next header */ uint32_t ip_hop:8; /* hop limit */ struct in6_addr ip_src; /* src address */ struct in6_addr ip_dst; /* dst address */ }; /* TCP header */ struct sniff_tcp { u_short th_sport; /* source port */ u_short th_dport; /* destination port */ tcp_seq th_seq; /* sequence number */ tcp_seq th_ack; /* acknowledgement number */ #ifdef WORDS_BIGENDIAN u_int th_off:4, /* data offset */ th_x2:4; /* (unused) */ #else u_int th_x2:4, /* (unused) */ th_off:4; /* data offset */ #endif u_char th_flags; #define TH_FIN 0x01 #define TH_SYN 0x02 #define TH_RST 0x04 #define TH_PUSH 0x08 #define TH_ACK 0x10 #define TH_URG 0x20 #define TH_ECE 0x40 #define TH_CWR 0x80 #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR) u_short th_win; /* window */ u_short th_sum; /* checksum */ u_short th_urp; /* urgent pointer */ }; #endif tcptrack-1.4.3/src/main.cc000066400000000000000000000032161251612363000153550ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define _DEFAULT_SOURCE 1 #define _BSD_SOURCE 1 #define _REENTRANT #include "../config.h" // for PACKAGE and VERSION #include #include // for getopt & pause #include // for ARG_MAX #include // for setting up sig handlers w/sigaction #include "TCContainer.h" #include "TextUI.h" #include "util.h" #include "PacketBuffer.h" #include "Sniffer.h" #include "TCPTrack.h" // the global application object. extern TCPTrack *app; // cleanly quit tcptrack on sigint void inthandler(int sig) { signal(SIGINT,SIG_IGN); if( app != NULL ) app->shutdown(); else exit(0); return; } int main(int argc, char **argv) { extern TCPTrack *app; // make a SIGINT do a clean shutdown signal(SIGINT,inthandler); app=new TCPTrack(); app->run(argc,argv); } tcptrack-1.4.3/src/tcptrack.1000066400000000000000000000102711251612363000160160ustar00rootroot00000000000000.TH "tcptrack" 1 .SH NAME tcptrack \- Monitor TCP connections on the network .SH SYNOPSIS .B tcptrack [ .B -dfhvp ] [ .B -r .I seconds ] .B -i .I interface [ .I filter expression ] .SH DESCRIPTION tcptrack displays the status of TCP connections that it sees on a given network interface. tcptrack monitors their state and displays information such as state, source/destination addresses and bandwidth usage in a sorted, updated list very much like the top(1) command. The filter expression is a standard pcap filter expression (identical to the expressions used by tcpdump(8)) which can be used to filter down the characteristics of TCP connections that tcptrack will see. See tcpdump(8) for more information about the syntax of this expression. .SH OPTIONS .TP .B \-d Only track connections that were started after tcptrack was started. Do not try to detect existing connections. .TP .B \-f Enable fast average recalculation. TCPTrack will calculate the average speeds of connections by using a running average. TCPTrack will use more memory and CPU time, but averages will seem closer to real time and will be updated more than once per second and may be more accurate under heavy load. The number of times per second that averages will be recalculated in fast mode is a compile-time setting that defaults to 10 times per second. .TP .B \-h Display command line help .TP .B \-i [interface] Sniff packets from the specified network interface. .TP .B \-T [pcap file] Read packets from the specified file instead of sniffing from the network. Useful for testing. .TP .B \-p Do not put the interface being sniffed into promiscuous mode. .TP .B \-r [seconds] Wait this many seconds before removing a closed connection from the display. Defaults to 2 seconds. See also the pause interactive command (below). .TP .B \-v Display tcptrack version .SH "INTERACTIVE COMMANDS" The following keys may be pressed while tcptrack is running to change runtime options: .B p - Pause/unpause display. No new connections will be added to the display, and all currently displayed connections will remain in the display. .B q - Quit tcptrack. .B s - Cycle through the sorting options: unsorted, sorted by rate, sorted by total bytes. The options for pausing and toggling sorting are useful if you're watching a very busy network and want to look at the display without connections jumping around (due to sorting and new connections being added) and disappearing (due to being closed for a certain time). When paused (via the p command) no new connections will be displayed, however tcptrack will still monitor and track all connections it sees as usual. This option affects the display only, not internals. When you unpause, the display will be updated with all current information that tcptrack has been gathering all along. .SH "EXAMPLES" tcptrack requires only one parameter to run: the -i flag followed by an interface name that you want tcptrack to monitor. This is the most basic way to run tcptrack: .B # tcptrack -i eth0 tcptrack can also take a pcap filter expression as an argument. The format of this filter expression is the same as that of tcpdump(8) and other libpcap-based sniffers. The following example will only show connections from host 10.45.165.2: .B # tcptrack -i eth0 src or dst 10.45.165.2 The next example will only show web traffic (ie, traffic on port 80): .B # tcptrack -i eth0 port 80 .SH "SEE ALSO" tcpdump(8), pcap(3), http://www.rhythm.cx/~steve/devel/tcptrack .SH BUGS When picking up a connection that was already running before tcptrack was started, there is no way tcptrack can know for sure which end of the connection is the client (ie, which peer started the connection) and which is the server (ie, which peer was listening). tcptrack makes a crude guess at which is which by looking at the port numbers; whichever end has the lower port number is considered the server side. This isn't always accurate of course, but future versions may have better heuristics to figure out which end is which. Currently the interface is not very flexible. Display timing settings (such as the refresh interval) can only be changed by editing the source code (defs.h in particular). See the TODO file included with the source distribution for further bugs. tcptrack-1.4.3/src/util.cc000066400000000000000000000111431251612363000154040ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "util.h" #include #include #include "headers.h" #ifdef HAVE_HASH_MAP # include #elif HAVE_EXT_HASH_MAP # include #endif #include /* * getnlp takes a raw packet (with link level header) sniffed from an * interface whose type is dlt (values for dlt are the DLT_* macros in * net/bpf.h). * It returns a struct nlp, which contains a pointer to the beginning * of the network layer protocol (in *p) and a value to identify the network * layer protocol */ struct nlp *getnlp( const u_char *p, int dlt, const pcap_pkthdr *pcap ) { struct nlp *n = (struct nlp *) malloc( sizeof(struct nlp) ); n->p=NULL; n->ts = pcap->ts; n->len = 0; int vlan_frame = 0; if( dlt==DLT_EN10MB ) { if( pcap->caplen < ENET_HEADER_LEN+IP_HEADER_LEN ) { free(n); return NULL; } const struct sniff_ethernet *ethernet; ethernet = (struct sniff_ethernet*)(p); vlan_frame = ( ntohs(ethernet->ether_type) == ETHERTYPE_VLAN ); uint16_t ether_type; if( vlan_frame ) ether_type = ntohs(*((uint16_t *)(p + ENET_HEADER_LEN + VLAN_HEADER_LEN - 2))); else ether_type = ntohs(ethernet->ether_type); if( ether_type == ETHERTYPE_IP || ether_type == ETHERTYPE_IPV6 ) { n->len = pcap->caplen-ENET_HEADER_LEN-(vlan_frame ? VLAN_HEADER_LEN : 0); n->p = (u_char *) malloc( sizeof(u_char) * n->len ); memcpy( (void *)n->p, (void *)(p+ENET_HEADER_LEN+(vlan_frame ? VLAN_HEADER_LEN : 0)), n->len); } else { free(n); return NULL; } } else if( dlt==DLT_LINUX_SLL ) { if( pcap->caplen < SLL_HEADER_LEN+IP_HEADER_LEN ) { free(n); return NULL; } n->len = pcap->caplen-SLL_HEADER_LEN; n->p = (u_char *) malloc( sizeof(u_char) * n->len ); memcpy( (void *)n->p, (void *)(p+SLL_HEADER_LEN), n->len); } else if( dlt==DLT_RAW || dlt==DLT_NULL ) { if( pcap->caplen < IP_HEADER_LEN ) { free(n); return NULL; } n->len = pcap->caplen; n->p = (u_char *) malloc( sizeof(u_char) * n->len ); memcpy( (void *)n->p, (void *)(p), n->len); } return n; } /* This function performs all kinds of tests on captured packet data to * ensure that it is a valid packet of the given network layer protocol. * data is the raw packet, data_len is its length * proto is one of the NLP_* values. currently only NLP_IPV4 works. * This needs to be run early upon packet reception. Other code assumes it * has. If they detect a bad packet, assertions will fail. */ // TODO: this should be split up into smaller functions bool checknlp( struct nlp *n ) { struct sniff_ip *ip = (struct sniff_ip *)n->p; //TODO: Improve this / split in two functions (IPv6/IPv4) if( ip->ip_v == 6 ) { if( n->len < IP6_HEADER_LEN + TCP_HEADER_LEN ) { return false; } struct sniff_ip6 *ip6 = (struct sniff_ip6 *)n->p; if( ip6->ip_next != IPPROTO_TCP ) { return false; } struct sniff_tcp *tcp = (struct sniff_tcp *) (n->p + IP6_HEADER_LEN); if( tcp->th_off < 5 ) // tcp header is at least 20 bytes long. { return false; } if( tcp->th_sport == 0 ) return false; if( tcp->th_dport == 0 ) return false; return true; } unsigned int ip_header_len = ip->ip_hl * 4; // not enough data to do anything with this... // we're only interested in IPv4 TCP Packets if( n->len < ip_header_len + TCP_HEADER_LEN ) return false; if( ip->ip_v != 4 ) return false; if( ntohs(ip->ip_len) < ip_header_len + TCP_HEADER_LEN ) return false; if( ip->ip_hl < 5 ) return false; if( ip->ip_p != IPPROTO_TCP ) return false; struct sniff_tcp *tcp = (struct sniff_tcp *) (n->p + ip_header_len); if( tcp->th_off < 5 ) // tcp header is at least 20 bytes long. return false; if( tcp->th_sport == 0 ) return false; if( tcp->th_dport == 0 ) return false; return true; } tcptrack-1.4.3/src/util.h000066400000000000000000000036251251612363000152540ustar00rootroot00000000000000/* * Ths code in this file is part of tcptrack. For more information see * http://www.rhythm.cx/~steve/devel/tcptrack * * Copyright (C) Steve Benson - 2003 * * tcptrack is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your * option) any later version. * * tcptrack 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 GNU Make; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef UTIL_H #define UTIL_H 1 #include "../config.h" #include #include #include #include #ifdef HAVE_PCAP_PCAP_H #include #elif HAVE_PCAP_H #include #endif #ifdef HAVE_HASH_MAP #include #elif HAVE_EXT_HASH_MAP #include #endif #include "headers.h" #include "IPAddress.h" #include "TCPHeader.h" struct config { char *iface; // interface to listen on char *fexp; // filter expression unsigned int remto; // timeout to remove closed connections (secs) bool fastmode; // faster average recalculation (more than once/sec). bool detect; // detect pre-existing connections? bool promisc; // enable promisc mode? char *test_file; // File to use as input data for a test }; struct avgstat { struct timeval ts; unsigned int size; }; struct nlp { u_char *p; // dont forget to free this! unsigned int len; struct timeval ts; }; struct nlp *getnlp( const u_char *p, int dlt, const pcap_pkthdr *pcap ); bool checknlp( struct nlp *n ); #endif tcptrack-1.4.3/tcptrack.spec000066400000000000000000000122661251612363000160270ustar00rootroot00000000000000%define name tcptrack %define version 1.3.0 %define release 1 %define prefix /usr Summary: A packet sniffer which displays TCP information like the 'top' command Name: %{name} Version: %{version} Release: %{release} License: GPL Group: Utilities/Network Source: %{name}-%{version}.tar.gz URL: http://www.rhythm.cx/~steve/devel/tcptrack BuildRoot: %{_tmppath}/%{name}-buildroot %description tcptrack is a sniffer which displays information about TCP connections it sees on a network interface. It passively watches for connections on the network interface, keeps track of their state and displays a list of connections in a manner similar to the unix 'top' command. It displays source and destination addresses and ports, connection state, idle time, and bandwidth usage. %prep %setup -q %build ./configure --prefix=%{prefix} --mandir=%{prefix}/share/man make %install %makeinstall %clean rm -rf $RPM_BUILD_ROOT %files %{prefix}/bin/tcptrack %{prefix}/share/man/man1/tcptrack.1.gz %doc AUTHORS COPYING ChangeLog README INSTALL NEWS %changelog * Wed Dec 20 2006 Steve Benson - This release fixes a bug that causes a floating point exception when handling packets with source or destination ports of 0. * Sun Oct 10 2004 Steve Benson - Fixed a memory leak in the TCPConnection class. * Mon Aug 16 2004 Steve Benson - Added a total for the speed column at the bottom of the display. Thanks to Leo Costela for the patch. - Fixed a few minor user interface bugs (mostly exposed by the above patch). * Thu Jun 3 2004 Steve Benson - Fixed assertion an assertion failure (in IPv4Packet.cc) bug. - tcptrack can now run on interfaces with no IPv4 addresses (ie, stealth interfaces). - Fixed a few crashes and assertion failures on Mac OSX and FreeBSD caused by missing pthread_*_init calls. Thanks to Chuck Schied for the patch. - Added a timeout for connections in the CLOSING state. Connections may get stuck in that state due to dropped packets, timeouts by the peers, or there may be a bug in the TCPConnection state machine code that I haven't found yet. - ChangeLog is now a regular ChangeLog, not a development log. The contents of this file were previously in the NEWS file. NEWS will now contain the same stuff that's on the web page. * Mon May 10 2004 Steve Benson - Fixed problem where tcptrack would silently not work on certain ppp connections (a.k.a. debian bug #245227) - Added support for NULL and RAW pcap interface types. tcptrack should now work on all linux PPP, ethernet, tun/tap and local loopback interfaces. - tcptrack now compiles properly with gcc 3.4. Thanks to Jim Gifford. - Added EXAMPLES section to man page and a few extra notes to man page about guessing, pause/sort options. * Sun Apr 18 2004 Steve Benson - Fixed problems with crashes on FreeBSD and Solaris. Stack sizes of certain threads were too small (adjustable in defs.h). * Wed Mar 31 2004 Steve Benson - Idle time can be computed & updated more than once a second now and may be more accurate under heavy load. See the man page for more info. - Idle time now displays hours/minutes instead of always seconds. - tcptrack can now see connections that were started before tcptrack was. - Added -d option to disable connection detection (above). - List of connections is now scrollable with arrow keys. - Added pause/unpause and enable/disable sort options - Added status display for number of connections shown and total and pause / sort options - tcptrack now exits cleaner - internal data structures changed to make tcptrack more CPU efficient. - lots of internal code changes to make code more organized and reusable. - More error handling added. - Added -p option to enable/disable promisc mode - Sorting is now done by speed first, least idle time second. Before, idle time was not factored in the sorting. - Stack size of each thread reduced. configurable in defs.h. tcptrack now uses a lot less virtual address space. * Thu Dec 4 2003 Steve Benson - Fixed some Solaris build issues - configure script updated - Fixed assert compile problem on some systems * Thu Nov 27 2003 Steve Benson - Fixed a memory leak - fixed a problem that would cause tcptrack to segfault under heavy load - tcptrack no longer grabs packet payloads off of the network, making it more efficient (especially in terms of memory under heavy load). - FreeBSD (and probably other BSD) timing issues have been fixed. - New timing options controllable in defs.h - tcptrack only works on ethernet interfaces for now. It will now fail to start up on non-ethernet interfaces and print an error. - tcptrack still won't compile on Solaris. I'm working on getting access to a Solaris machine to test on. * Sun Nov 23 2003 Steve Benson - First public release.