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* modularize ip6 nextlayer checksum generation andHannes Gredler2009-10-121-1/+2
| | | | change tcp6 and pim6 to use it.
* Make the -K flag suppress IP and UDP checksum checking as well.Guy Harris2009-03-051-1/+1
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* From Victor Oppleman: add support for RFC 1393 traceroute.guy2007-09-141-1/+2
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* add basic skeleton for printing olsr packets as per rfc3626hannes2007-03-271-2/+2
| | | | add a line break in verbose mode fro the ip printer.
* from Kevin Steves <stevesk@pobox.com>:hannes2007-01-171-2/+2
| | | | format the ttl field not with heading whitespaces for ttl < 100 and ttl < 10
* from Kevin Steves <stevesk@pobox.com>:hannes2007-01-171-4/+4
| | | | receive some colons in the IP printer output for consistency reasons.
* Add some bounds checking to the IP options code, and clean up theguy2006-02-191-18/+30
| | | | options output a bit.
* We've gotten our IP definitions/declarations from our own "ip.h" for aguy2005-11-131-7/+1
| | | | | while, and it defines IP_MF and IP_DF; we don't need to compensate for system headers lacking them.
* Properly pass the MF flag and fragment offset to the UDP, TCP, and ICMPguy2005-11-131-4/+6
| | | | print routines.
* bugfix: don't mask the more-fragments bit for ICMP checksum suppressionhannes2005-10-071-2/+2
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* From Ian McDonald and Arnaldo Carvalho de Melo: DCCP support.guy2005-09-201-2/+6
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* from Andy Heffernan <ahh@juniper.net>:hannes2005-05-201-1/+5
| | | | add PGM upport as per rfc3208
* use new ip_print_demux() routine in ISAKMP UDP-ESP encapmcr2005-04-071-12/+37
| | | | printer.
* refactored ip_print() so that chained header parser (ESP/AH) canmcr2005-04-061-192/+215
| | | | more easily call the inner parts.
* from Rick Jones <rick.jones2@hp.com>:hannes2005-01-211-3/+14
| | | | | suppress the IP printers "bad-len" error message in case TSO (TCP segment offload) is enabled
* from nicolas ferrero <toorop@babylo.net>:hannes2005-01-121-2/+2
| | | | - fix EGP boundary testing
* Get rid of an unused variable.guy2004-12-271-3/+2
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* clean up the ip options printer:hannes2004-09-271-58/+47
| | | | | | - make more use of tok2str() - always display the option length - move option defines into ip.h
* Use %u to print unsigned quantities.guy2004-08-271-2/+2
| | | | | | | | | Check, and use, the supplied packet length in the PPPoE dissector. (It reflects the actual packet length; snapend reflects the captured packet length.) As we're now doing bounds checks with TCHECK, the loop over the tagged fields doesn't have to check against snapend.
* print the packet length for ESP packetshannes2004-07-161-2/+2
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* From Eddie Kohler <xexd@sourceforge.net>: In "ip_finddst()":guy2004-06-251-10/+10
| | | | | | | | | | | | | quit as soon as we see IPOPT_EOL; *don't* quit as soon as we see IPOPT_NOP, just advance to the next option, if any; implement "quit" as "return the destination address from the IP header rather than as "return 0". Also, return the IP header destination address if we see a source-routing option with a too-short length.
* supress printing of the L3 protoname if eflag is sethannes2004-05-011-2/+2
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* -add baseline support for dissecting EIGRP-IP and EIGRP-IPX messageshannes2004-04-301-9/+5
| | | | | -FIXME: complete TLV dissection (today we just show the TLV name and hexdump the TLV value)
* Some BSDs define IPPROTO_IGRP as 88 and don't define IPPROTO_EIGRP, soguy2004-04-281-2/+22
| | | | | | | | | | | | | | | | | | | | | | we also define it as 88, so we can't have case IPPROTO_IGRP: case IPPROTO_EIGRP: in a switch statement. The current IANA protocol number assignments page lists 9 as "any private interior gateway (used by Cisco for their IGRP)" and 88 as "EIGRP" from Cisco, so we define IPPROTO_PIGP as 9 (which matches what those BSDs do) and IPPROTO_EIGRP as 88 (so we don't bother with IPPROTO_IGRP at all), and do case IPPROTO_PIGP: case IPPROTO_EIGRP: It's not clear that we should handle both with the same print routine, however - Cisco IGRP and Cisco EIGRP don't appear to have the same packet format.
* do host-OS indep. ipproto name resolutionhannes2004-04-261-7/+9
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* print-esp has been "NDO"-ized.mcr2004-04-051-2/+2
| | | | | replace error() and warning() with ndo-ized version. moved snaplen/snapend to ndo structure.
* Do the length checks only for IP options with a length field.guy2004-03-241-6/+6
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* Add bounds and option length checking.guy2004-03-241-26/+43
| | | | Use "%u", not "%d", for unsigned values.
* print the proto-id in verbose modehannes2004-03-171-3/+4
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* Have various routines for printing non-final headers for IPv4/IPv6guy2003-11-191-5/+7
| | | | | | | return -1 if they run out of data. Have the IPv4 and IPv6 dissectors check for non-positive return values from those routines and quit if they see one.
* Cut off "snapend" at the length of the IPv4 or IPv6 payload, so we don'tguy2003-11-191-3/+16
| | | | | | | | | | | | | | | | | run past the end of that payload. Check that the IPv4 total length isn't less than the header length. Use "%u", not "%d", to print unsigned values. Properly update "len" in the header-processing loop for IPv6. Doing so means we can trust the length passed to the TCP and UDP dissectors when constructing the IPv6 pseudo-header; do so (but fix the length we pass to the UDP-over-IPv6 checksum routine). That length is unsigned; make the corresponding arguments to the TCP and UDP checksum routines unsigned.
* Have the configure script arrange that the Makefile define _U_guy2003-11-161-4/+4
| | | | | | | | | | appropriately, and that GNUmakefile and the MSVC++ project file define it apppriately, as we do with libpcap, rather than defining it in "interface.h". Undo the rcsid-shuffling and addition of extra #includes, as we no longer need to arrange that "interface.h" be included before using _U_ in an RCS ID or copyright.
* From Neil Spring:guy2003-11-151-4/+4
| | | | | | | | | | | use "_U_" in the definitions of "rcsid[]", to eliminate complaints about those variables being unused; move the definitions after the include of "interface.h", or add an include of "interface.h", so that "_U_" is defined. Include "config.h" before including "tcpdump-stdinc.h" in "missing/datalinks.c".
* Fix the separator for "bad cksum".guy2003-07-081-5/+2
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* Add a new "ipproto.h" header file, with definitions of IP protocol typeguy2003-06-071-47/+4
| | | | | | | values. Use that rather than private definitions in various files. Add "gmpls.h" to the list of files in FILES, and add it and "ipfc.h" to the list of files in INSTALL.
* warn if v6 was found using ip_print()hannes2003-05-251-3/+9
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* bugfix: print the real version number instead of always 4 if version != 4hannes2003-05-211-2/+2
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* don't attempt checksumming in ICMP if the packet is a fragmenthannes2003-05-151-2/+3
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* minor display cosmetics:hannes2003-05-151-2/+2
| | | | | print 3-digit ttl field in print-ip.c unbracketize the LCP id in print-ppp.c
* print IP keyword plus optional version numberhannes2003-05-081-1/+3
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* per George Bakos' suggestion:hannes2003-04-241-57/+57
| | | | | | | | | | backout some of the v1.118 changes now we hide frag processing under the vflag option where we print: id, offset. plus the (+,DF,res) flags using bittok2string also decode the rfc3514 "evil" bit to keep the security guys happy;
* Get rid of the added "IP " - IPv6 doesn't do it, and previous versionsguy2003-02-051-3/+1
| | | | of tcpdump didn't do it.
* Fix up long vs. int issues.guy2003-01-031-2/+2
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* - move IP option processing from the trail up to the headerhannes2002-12-281-8/+11
| | | | - suppress IP id == 0
* The "__attribute__((packed))" tag on structures causes some files not toguy2002-12-111-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
* remove buffer move in LBL_ALIGN case, which does more bad things than good ↵itojun2002-10-181-25/+1
| | | | | | things. (if there's unaligned access, they must be converted to EXTRACT_xx)
* support for RSVPhannes2002-10-041-1/+1
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* hide multiline output using vflag plus enhanced, ES-IS decoderhannes2002-10-031-1/+8
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* Get rid of the "-Wno-unused" flag, and fix up most of theguy2002-09-051-4/+4
| | | | | | | | | | | | | | | unused-parameter problems reported by GCC. Add an _U_ tag to label parameters as unused if the function is called through a pointer (so that you can't change its signature by removing parameters) or if there are unused parameters only because the function isn't complete. Add some additional bounds checks the necessity for which was revealed while cleaning up unused-parameter problems. Make some routines static. "lcp_print()", defined in "print-lcp.c", isn't called anywhere - "print-ppp.c" has the code to dissect LCP. Get rid of "print-lcp.c".
* Add a few more GCC warnings on GCC >= 2 for ".devel" builds.guy2002-09-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From Neil T. Spring: fixes for many of those warnings: addrtoname.c, configure.in: Linux needs netinet/ether.h for ether_ntohost print-*.c: change char *foo = "bar" to const char *foo = "bar" to appease -Wwrite-strings; should affect no run-time behavior. print-*.c: make some variables unsigned. print-bgp.c: plen ('prefix len') is unsigned, no reason to validate by comparing to zero. print-cnfp.c, print-rx.c: use intoa, provided by addrtoname, instead of inet_ntoa. print-domain.c: unsigned int l; (l=foo()) < 0 is guaranteed to be false, so check for (u_int)-1, which represents failure, explicitly. print-isakmp.c: complete initialization of attrmap objects. print-lwres.c: "if(x); print foo;" seemed much more likely to be intended to be "if(x) { print foo; }". print-smb.c: complete initialization of some structures. In addition, add some fixes for the signed vs. unsigned comparison warnings: extract.h: cast the result of the byte-extraction-and-combining, as, at least for the 16-bit version, C's integral promotions will turn "u_int16_t" into "int" if there are other "int"s nearby. print-*.c: make some more variables unsigned, or add casts to an unsigned type of signed values known not to be negative, or add casts to "int" of unsigned values known to fit in an "int", and make other changes needed to handle the aforementioned variables now being unsigned. print-isakmp.c: clean up the handling of error/status indicators in notify messages. print-ppp.c: get rid of a check that an unsigned quantity is >= 0. print-radius.c: clean up some of the bounds checking. print-smb.c: extract the word count into a "u_int" to avoid the aforementioned problems with C's integral promotions. print-snmp.c: change a check that an unsigned variable is >= 0 to a check that it's != 0. Also, fix some formats to use "%u" rather than "%d" for unsigned quantities.
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