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* from nicolas ferrero <toorop@babylo.net>:hannes2005-01-121-2/+2
| | | | - fix EGP boundary testing
* 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.
* 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.
* 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.
* 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:guy2003-11-151-1/+1
| | | | | | | | | | | 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".
* 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.
* Added support for Win32, based on WinPcap.risso2002-08-011-9/+3
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* Calculate UDP/TCP pseudo-checksum properly in the presence offenner2002-07-281-1/+47
| | | | source-route options.
* Add a "in_cksum_shouldbe()" to compute, given an Internet checksum fieldguy2002-07-211-4/+57
| | | | | | | in a packet header and the computed checksum for the data that the checksum covers, what the checksum field's value should have been. Use that routine in the IP printer.
* Set "off" before using it.guy2002-07-201-3/+3
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* the last commit contained a bogus commit message;hannes2002-07-141-16/+15
| | | | | | | purpose of 1.105 was to print the ip header values (len, ttl, tos) at the beginning of the line (where it belongs to) and not at the end; it is only displayed using the -v(erbose) options; the BGP output (where i am working now on) gets much more cleaner now;
* split BGP output to multiple lines;hannes2002-07-141-34/+32
| | | | | | | added support for Originator_ID, Cluster List Attributes; reworked BGP Open Message Decoder do decode optional Capabilities; fixed the NEXTHOP decoder of MP_REACH and MP_UNREACH to honor NH length based on AFI,SAFI
* whitespace cleanupitojun2002-06-111-8/+8
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* Fix a typo.guy2002-05-291-2/+2
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* when reporting a bad checksum, indicate what it should have been.mcr2002-05-291-3/+4
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* remove comment which may not be correct; i've experienced unaligned headeritojun2001-11-161-3/+1
| | | | on bpf taps with netbsd 1.5Y.
* From Crist J. Clark <cjclark@alum.mit.edu>: print the IP protocol fieldguy2001-10-271-4/+16
| | | | | | | | for fragments other than the first fragment. Also, for packets whose IP protocols we don't handle ourselves, print the protocol name if "getprotobynumber()" finds it, otherwise print the protocol number.
* Eliminate some unused parameters.fenner2001-09-171-3/+3
| | | | | | | | | | | Use const more. Use EXTRACT_* macros more. Use TCHECK* more. Use tok2str() to replace some home-grown workalikes. smb: - Get rid of private types, use tcpdump-defined types - Rename fdata and fdata1 to smb_fdata and smb_fdata1 to avoid conflict with IRIX library function.
* Don't try decrypting a fragmented ESP packet; the IP proto number andfenner2001-08-201-5/+5
| | | | | | | | padding info are in the last fragment but the header is in the first fragment. Pass padding length back to IP to allow trimming the padding. Update in_cksum() prototype to allow using it for checksums including the pseudo-header.
* Remove #if 0 sectionsfenner2001-06-151-45/+1
| | | | | | | | Finish converting over to having the caller print the IP address (except for UDP, TCP and SCTP). This consists mostly of removing places where the IP address is printed, both in the big "case" in ip_print() and in the individual printers. Also fix a couple of spacing bugs.
* added explicit protocol number to "ipip" - John Hawkinson <jhawk@MIT.EDU>mcr2001-05-291-2/+2
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* Print new ECN code-point [ECT(0),ECT(1),CE] instead of old ECN bitsfenner2001-05-091-4/+11
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* SCTP printing from Armando L. Caro Jr. <acaro@mail.eecis.udel.edu>fenner2001-05-091-2/+10
| | | | | Modified to print IP/IPv6-level addresses like TCP does, and to not print multi-line detail unless -vv by fenner.
* Add missing space after "truncated-ip: %d bytes missing!"fenner2001-02-201-2/+2
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* atabifyitojun2001-01-281-10/+10
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* When printing VRRP packets, show the source and destination IP addressesguy2001-01-021-1/+5
| | | | if "-v" was specified. From OpenBSD.
* do not try to compute tcp/udp checksum for fragmented datagram.itojun2000-11-171-3/+3
| | | | from: jinmei@kame.net
* Move IGMP to its own file.fenner2000-11-021-151/+1
| | | | | | Add IGMPv3 support. Contributed by: Wilbert de Graaf <wilbertdg@hetnet.nl>
* always use u_intXX_t for protocol format declaration. char/short/int may notitojun2000-10-031-4/+4
| | | | | | come with exact size. while at it, correct signedness of ip/udp header field. nuke most of the use of bitfield. TODO: bitfield in namser.h
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