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tcpdump/ipproto.c

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2014-01-02 10:27:54 +08:00
/*
add infrastructure for host-OS indep. ipproto name resolution
2004-04-27 01:49:44 +08:00
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
zero change: update Hannes Gredler's email
2017-07-28 23:44:12 +08:00
* Original code by Hannes Gredler (hannes@gredler.at)
add infrastructure for host-OS indep. ipproto name resolution
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*/
#ifdef HAVE_CONFIG_H
Always include <config.h> rather than "config.h". This can prevent bizarre failures if, for example, you've done a configuration in the top-level source directory, leaving behind one config.h file, and then do an out-of-tree build in another directory, with different configuration options. This way, we always pick up the same config.h, in the build directory.
2018-01-22 04:27:08 +08:00
#include <config.h>
add infrastructure for host-OS indep. ipproto name resolution
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#endif
Use quoted include netdissect-stdinc.h instead of angle-bracketed one
2018-01-20 22:59:49 +08:00
#include "netdissect-stdinc.h"
add infrastructure for host-OS indep. ipproto name resolution
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libnetdissect code must include 'netdissect.h', not 'interface.h' Moreover: Remove netdissect.h include in interface.h Move thiszone declaration in netdissect.h Update a comment
2015-09-11 19:22:56 +08:00
#include "netdissect.h"
"ipproto.h" uses "struct tok", and "interface.h" defines it; always include "interface.h" before "ipproto.h".
2005-05-14 08:42:28 +08:00
#include "ipproto.h"
add infrastructure for host-OS indep. ipproto name resolution
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ipproto.h/c: mark several structs as const
2010-02-20 15:45:56 +08:00
const struct tok ipproto_values[] = {
add infrastructure for host-OS indep. ipproto name resolution
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{ IPPROTO_HOPOPTS, "Options" },
{ IPPROTO_ICMP, "ICMP" },
{ IPPROTO_IGMP, "IGMP" },
{ IPPROTO_IPV4, "IPIP" },
{ IPPROTO_TCP, "TCP" },
{ IPPROTO_EGP, "EGP" },
temporary patch for "EIGP" protocol.
2004-04-29 10:16:40 +08:00
{ IPPROTO_PIGP, "IGRP" },
add infrastructure for host-OS indep. ipproto name resolution
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{ IPPROTO_UDP, "UDP" },
From Ian McDonald and Arnaldo Carvalho de Melo: DCCP support.
2005-09-20 14:01:20 +08:00
{ IPPROTO_DCCP, "DCCP" },
add infrastructure for host-OS indep. ipproto name resolution
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{ IPPROTO_IPV6, "IPv6" },
{ IPPROTO_ROUTING, "Routing" },
{ IPPROTO_FRAGMENT, "Fragment" },
{ IPPROTO_RSVP, "RSVP" },
{ IPPROTO_GRE, "GRE" },
{ IPPROTO_ESP, "ESP" },
{ IPPROTO_AH, "AH" },
{ IPPROTO_MOBILE, "Mobile IP" },
{ IPPROTO_ICMPV6, "ICMPv6" },
{ IPPROTO_MOBILITY_OLD, "Mobile IP (old)" },
{ IPPROTO_EIGRP, "EIGRP" },
{ IPPROTO_OSPF, "OSPF" },
{ IPPROTO_PIM, "PIM" },
{ IPPROTO_IPCOMP, "Compressed IP" },
Dismiss unused IPPROTO_CARP. In ipproto_values[] IPPROTO_CARP never matched because of IPPROTO_VRRP, which matched earlier. Remove the array element and the macro and leave some comments instead.
2017-08-27 19:19:59 +08:00
{ IPPROTO_VRRP, "VRRP" }, /* See also CARP. */
from Andy Heffernan <ahh@juniper.net>: add PGM upport as per rfc3208
2005-05-21 05:02:29 +08:00
{ IPPROTO_PGM, "PGM" },
Fix a typo.
2004-12-15 16:41:26 +08:00
{ IPPROTO_SCTP, "SCTP" },
add infrastructure for host-OS indep. ipproto name resolution
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{ IPPROTO_MOBILITY, "Mobility" },
Add support for ethernet IP protocol The SRv6 network programming defines a new IP protocol number [1]. The new protocol number is used in the Next Header field of an IPv6 header or any extension header indicates that the payload is an Ethernet. IANA has assigned 143 as the protocol number of ethernet [2]. The SRv6 packet has the following format: IPv6 HDR + SRH + Ethernet HDR + IPv4/IPv6 packet This patch allows TCPDUMP to dissect such SRv6 packets. [1] https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-16#section-9.1 [2] https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml Signed-off-by: Ahmed Abdelsalam <ahabdels@gmail.com>
2020-08-07 23:02:16 +08:00
{ IPPROTO_ETHERNET, "Ethernet" },
add infrastructure for host-OS indep. ipproto name resolution
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{ 0, NULL }
};
Use a table instead of getprotobynumber(). On Linux getprotobynumber() returns different results for the same argument depending on the contents of /etc/protocols at runtime (expectedly but gets in the way of reproducible test cases). On FreeBSD it returns results that are irrelevant of the contents of /etc/protocols at runtime (unexpectedly). Other implementations exist and may expose interesting properties too. And if the host uses LDAP instead of /etc/protocols for name services, a call to that function may cause LDAP handle the request. All of the above is not right for the specific task of network protocols decoding, which needs to be fast and deterministic. As the protocol number space is just 8-bit, add a 256-element array of strings/NULLs for the translation and a wrapper function around it for index range enforcement. Change the code to use the new function instead of getprotobynumber(). Fix a typo while at it.
2017-08-27 21:15:17 +08:00
/*
* For completeness the number space in the array below comes from IANA:
* https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
* However, the spelling tries to match that of /etc/protocols to achieve as
* much consistency as possible with the previously implemented behaviour,
* which was based on getprotobynumber (3).
*/
static const char *netdb_protocol_names[256] = {
"hopopt", /* 0 (IPPROTO_HOPOPTS, IPv6 Hop-by-Hop Option) */
"icmp", /* 1 (IPPROTO_ICMP, Internet Control Message) */
"igmp", /* 2 (IPPROTO_IGMP, Internet Group Management) */
"ggp", /* 3 (Gateway-to-Gateway) */
"ipencap", /* 4 (IPPROTO_IPV4, IPv4 encapsulation) */
"st", /* 5 (Stream, ST datagram mode) */
"tcp", /* 6 (IPPROTO_TCP, Transmission Control) */
"cbt", /* 7 (CBT) */
"egp", /* 8 (IPPROTO_EGP, Exterior Gateway Protocol) */
"igp", /* 9 (IPPROTO_PIGP, "any private interior gateway
* (used by Cisco for their IGRP)")
*/
"bbn-rcc-mon", /* 10 (BBN RCC Monitoring) */
"nvp-ii", /* 11 (Network Voice Protocol) */
"pup", /* 12 (PARC universal packet protocol) */
"argus", /* 13 (ARGUS) */
"emcon", /* 14 (EMCON) */
"xnet", /* 15 (Cross Net Debugger) */
"chaos", /* 16 (Chaos) */
"udp", /* 17 (IPPROTO_UDP, User Datagram) */
"mux", /* 18 (Multiplexing) */
"dcn-meas", /* 19 (DCN Measurement Subsystems) */
"hmp", /* 20 (Host Monitoring) */
"prm", /* 21 (Packet Radio Measurement) */
"xns-idp", /* 22 (XEROX NS IDP) */
"trunk-1", /* 23 (Trunk-1) */
"trunk-2", /* 24 (Trunk-2) */
"leaf-1", /* 25 (Leaf-1) */
"leaf-2", /* 26 (Leaf-2) */
"rdp", /* 27 (Reliable Data Protocol) */
"irtp", /* 28 (Internet Reliable Transaction) */
"iso-tp4", /* 29 (ISO Transport Protocol Class 4) */
"netblt", /* 30 (Bulk Data Transfer Protocol) */
"mfe-nsp", /* 31 (MFE Network Services Protocol) */
"merit-inp", /* 32 (MERIT Internodal Protocol) */
"dccp", /* 33 (IPPROTO_DCCP, Datagram Congestion
* Control Protocol)
*/
"3pc", /* 34 (Third Party Connect Protocol) */
"idpr", /* 35 (Inter-Domain Policy Routing Protocol) */
"xtp", /* 36 (Xpress Transfer Protocol) */
"ddp", /* 37 (Datagram Delivery Protocol) */
"idpr-cmtp", /* 38 (IDPR Control Message Transport Proto) */
"tp++", /* 39 (TP++ Transport Protocol) */
"il", /* 40 (IL Transport Protocol) */
"ipv6", /* 41 (IPPROTO_IPV6, IPv6 encapsulation) */
"sdrp", /* 42 (Source Demand Routing Protocol) */
"ipv6-route", /* 43 (IPPROTO_ROUTING, Routing Header for IPv6) */
"ipv6-frag", /* 44 (IPPROTO_FRAGMENT, Fragment Header for
* IPv6)
*/
"idrp", /* 45 (Inter-Domain Routing Protocol) */
"rsvp", /* 46 (IPPROTO_RSVP, Reservation Protocol) */
"gre", /* 47 (IPPROTO_GRE, Generic Routing
* Encapsulation)
*/
"dsr", /* 48 (Dynamic Source Routing Protocol) */
"bna", /* 49 (BNA) */
"esp", /* 50 (IPPROTO_ESP, Encap Security Payload) */
"ah", /* 51 (IPPROTO_AH, Authentication Header) */
"i-nlsp", /* 52 (Integrated Net Layer Security TUBA) */
"swipe", /* 53 (IP with Encryption) */
"narp", /* 54 (NBMA Address Resolution Protocol) */
"mobile", /* 55 (IPPROTO_MOBILE, IP Mobility) */
"tlsp", /* 56 (Transport Layer Security Protocol using
* Kryptonet key management)
*/
"skip", /* 57 (SKIP) */
"ipv6-icmp", /* 58 (IPPROTO_ICMPV6, ICMP for IPv6) */
"ipv6-nonxt", /* 59 (IPPROTO_NONE, No Next Header for IPv6) */
"ipv6-opts", /* 60 (IPPROTO_DSTOPTS, Destination Options for
* IPv6)
*/
NULL, /* 61 (any host internal protocol) */
"cftp", /* 62 (IPPROTO_MOBILITY_OLD, CFTP, see the note
* in ipproto.h)
*/
NULL, /* 63 (any local network) */
"sat-expak", /* 64 (SATNET and Backroom EXPAK) */
"kryptolan", /* 65 (Kryptolan) */
"rvd", /* 66 (MIT Remote Virtual Disk Protocol) */
"ippc", /* 67 (Internet Pluribus Packet Core) */
NULL, /* 68 (any distributed file system) */
"sat-mon", /* 69 (SATNET Monitoring) */
"visa", /* 70 (VISA Protocol) */
"ipcv", /* 71 (Internet Packet Core Utility) */
"cpnx", /* 72 (Computer Protocol Network Executive) */
"rspf", /* 73 (Radio Shortest Path First, CPHB -- Computer
* Protocol Heart Beat -- in IANA)
*/
"wsn", /* 74 (Wang Span Network) */
"pvp", /* 75 (Packet Video Protocol) */
"br-sat-mon", /* 76 (Backroom SATNET Monitoring) */
"sun-nd", /* 77 (IPPROTO_ND, SUN ND PROTOCOL-Temporary) */
"wb-mon", /* 78 (WIDEBAND Monitoring) */
"wb-expak", /* 79 (WIDEBAND EXPAK) */
"iso-ip", /* 80 (ISO Internet Protocol) */
"vmtp", /* 81 (Versatile Message Transport) */
"secure-vmtp", /* 82 (Secure VMTP) */
"vines", /* 83 (VINES) */
"ttp", /* 84 (Transaction Transport Protocol, also IPTM --
* Internet Protocol Traffic Manager)
*/
"nsfnet-igp", /* 85 (NSFNET-IGP) */
"dgp", /* 86 (Dissimilar Gateway Protocol) */
"tcf", /* 87 (TCF) */
"eigrp", /* 88 (IPPROTO_EIGRP, Cisco EIGRP) */
"ospf", /* 89 (IPPROTO_OSPF, Open Shortest Path First
* IGP)
*/
"sprite-rpc", /* 90 (Sprite RPC Protocol) */
"larp", /* 91 (Locus Address Resolution Protocol) */
"mtp", /* 92 (Multicast Transport Protocol) */
"ax.25", /* 93 (AX.25 Frames) */
"ipip", /* 94 (IP-within-IP Encapsulation Protocol) */
"micp", /* 95 (Mobile Internetworking Control Pro.) */
"scc-sp", /* 96 (Semaphore Communications Sec. Pro.) */
"etherip", /* 97 (Ethernet-within-IP Encapsulation) */
"encap", /* 98 (Encapsulation Header) */
NULL, /* 99 (any private encryption scheme) */
"gmtp", /* 100 (GMTP) */
"ifmp", /* 101 (Ipsilon Flow Management Protocol) */
"pnni", /* 102 (PNNI over IP) */
"pim", /* 103 (IPPROTO_PIM, Protocol Independent
* Multicast)
*/
"aris", /* 104 (ARIS) */
"scps", /* 105 (SCPS) */
"qnx", /* 106 (QNX) */
"a/n", /* 107 (Active Networks) */
"ipcomp", /* 108 (IPPROTO_IPCOMP, IP Payload Compression
* Protocol)
*/
"snp", /* 109 (Sitara Networks Protocol) */
"compaq-peer", /* 110 (Compaq Peer Protocol) */
"ipx-in-ip", /* 111 (IPX in IP) */
"vrrp", /* 112 (IPPROTO_VRRP, Virtual Router Redundancy
* Protocol)
*/
"pgm", /* 113 (IPPROTO_PGM, PGM Reliable Transport
* Protocol)
*/
NULL, /* 114 (any 0-hop protocol) */
"l2tp", /* 115 (Layer Two Tunneling Protocol) */
"ddx", /* 116 (D-II Data Exchange (DDX)) */
"iatp", /* 117 (Interactive Agent Transfer Protocol) */
"stp", /* 118 (Schedule Transfer Protocol) */
"srp", /* 119 (SpectraLink Radio Protocol) */
"uti", /* 120 (UTI) */
"smp", /* 121 (Simple Message Protocol) */
"sm", /* 122 (Simple Multicast Protocol) */
"ptp", /* 123 (Performance Transparency Protocol) */
"isis", /* 124 (ISIS over IPv4) */
"fire", /* 125 (FIRE) */
"crtp", /* 126 (Combat Radio Transport Protocol) */
"crudp", /* 127 (Combat Radio User Datagram) */
"sscopmce", /* 128 (SSCOPMCE) */
"iplt", /* 129 (IPLT) */
"sps", /* 130 (Secure Packet Shield) */
"pipe", /* 131 (Private IP Encapsulation within IP) */
"sctp", /* 132 (IPPROTO_SCTP, Stream Control Transmission
* Protocol)
*/
"fc", /* 133 (Fibre Channel) */
"rsvp-e2e-ignore", /* 134 (RSVP-E2E-IGNORE) */
"mobility-header", /* 135 (IPPROTO_MOBILITY, Mobility Header) */
"udplite", /* 136 (UDPLite) */
"mpls-in-ip", /* 137 (MPLS-in-IP) */
"manet", /* 138 (MANET Protocols) */
"hip", /* 139 (Host Identity Protocol) */
"shim6", /* 140 (Shim6 Protocol) */
"wesp", /* 141 (Wrapped Encapsulating Security Payload) */
"rohc", /* 142 (Robust Header Compression) */
NULL, /* 143 (unassigned) */
NULL, /* 144 (unassigned) */
NULL, /* 145 (unassigned) */
NULL, /* 146 (unassigned) */
NULL, /* 147 (unassigned) */
NULL, /* 148 (unassigned) */
NULL, /* 149 (unassigned) */
NULL, /* 150 (unassigned) */
NULL, /* 151 (unassigned) */
NULL, /* 152 (unassigned) */
NULL, /* 153 (unassigned) */
NULL, /* 154 (unassigned) */
NULL, /* 155 (unassigned) */
NULL, /* 156 (unassigned) */
NULL, /* 157 (unassigned) */
NULL, /* 158 (unassigned) */
NULL, /* 159 (unassigned) */
NULL, /* 160 (unassigned) */
NULL, /* 161 (unassigned) */
NULL, /* 162 (unassigned) */
NULL, /* 163 (unassigned) */
NULL, /* 164 (unassigned) */
NULL, /* 165 (unassigned) */
NULL, /* 166 (unassigned) */
NULL, /* 167 (unassigned) */
NULL, /* 168 (unassigned) */
NULL, /* 169 (unassigned) */
NULL, /* 170 (unassigned) */
NULL, /* 171 (unassigned) */
NULL, /* 172 (unassigned) */
NULL, /* 173 (unassigned) */
NULL, /* 174 (unassigned) */
NULL, /* 175 (unassigned) */
NULL, /* 176 (unassigned) */
NULL, /* 177 (unassigned) */
NULL, /* 178 (unassigned) */
NULL, /* 179 (unassigned) */
NULL, /* 180 (unassigned) */
NULL, /* 181 (unassigned) */
NULL, /* 182 (unassigned) */
NULL, /* 183 (unassigned) */
NULL, /* 184 (unassigned) */
NULL, /* 185 (unassigned) */
NULL, /* 186 (unassigned) */
NULL, /* 187 (unassigned) */
NULL, /* 188 (unassigned) */
NULL, /* 189 (unassigned) */
NULL, /* 190 (unassigned) */
NULL, /* 191 (unassigned) */
NULL, /* 192 (unassigned) */
NULL, /* 193 (unassigned) */
NULL, /* 194 (unassigned) */
NULL, /* 195 (unassigned) */
NULL, /* 196 (unassigned) */
NULL, /* 197 (unassigned) */
NULL, /* 198 (unassigned) */
NULL, /* 199 (unassigned) */
NULL, /* 200 (unassigned) */
NULL, /* 201 (unassigned) */
NULL, /* 202 (unassigned) */
NULL, /* 203 (unassigned) */
NULL, /* 204 (unassigned) */
NULL, /* 205 (unassigned) */
NULL, /* 206 (unassigned) */
NULL, /* 207 (unassigned) */
NULL, /* 208 (unassigned) */
NULL, /* 209 (unassigned) */
NULL, /* 210 (unassigned) */
NULL, /* 211 (unassigned) */
NULL, /* 212 (unassigned) */
NULL, /* 213 (unassigned) */
NULL, /* 214 (unassigned) */
NULL, /* 215 (unassigned) */
NULL, /* 216 (unassigned) */
NULL, /* 217 (unassigned) */
NULL, /* 218 (unassigned) */
NULL, /* 219 (unassigned) */
NULL, /* 220 (unassigned) */
NULL, /* 221 (unassigned) */
NULL, /* 222 (unassigned) */
NULL, /* 223 (unassigned) */
NULL, /* 224 (unassigned) */
NULL, /* 225 (unassigned) */
NULL, /* 226 (unassigned) */
NULL, /* 227 (unassigned) */
NULL, /* 228 (unassigned) */
NULL, /* 229 (unassigned) */
NULL, /* 230 (unassigned) */
NULL, /* 231 (unassigned) */
NULL, /* 232 (unassigned) */
NULL, /* 233 (unassigned) */
NULL, /* 234 (unassigned) */
NULL, /* 235 (unassigned) */
NULL, /* 236 (unassigned) */
NULL, /* 237 (unassigned) */
NULL, /* 238 (unassigned) */
NULL, /* 239 (unassigned) */
NULL, /* 240 (unassigned) */
NULL, /* 241 (unassigned) */
NULL, /* 242 (unassigned) */
NULL, /* 243 (unassigned) */
NULL, /* 244 (unassigned) */
NULL, /* 245 (unassigned) */
NULL, /* 246 (unassigned) */
NULL, /* 247 (unassigned) */
NULL, /* 248 (unassigned) */
NULL, /* 249 (unassigned) */
NULL, /* 250 (unassigned) */
NULL, /* 251 (unassigned) */
Fixup the previous commit.
2017-08-28 04:11:43 +08:00
NULL, /* 252 (unassigned) */
Use a table instead of getprotobynumber(). On Linux getprotobynumber() returns different results for the same argument depending on the contents of /etc/protocols at runtime (expectedly but gets in the way of reproducible test cases). On FreeBSD it returns results that are irrelevant of the contents of /etc/protocols at runtime (unexpectedly). Other implementations exist and may expose interesting properties too. And if the host uses LDAP instead of /etc/protocols for name services, a call to that function may cause LDAP handle the request. All of the above is not right for the specific task of network protocols decoding, which needs to be fast and deterministic. As the protocol number space is just 8-bit, add a 256-element array of strings/NULLs for the translation and a wrapper function around it for index range enforcement. Change the code to use the new function instead of getprotobynumber(). Fix a typo while at it.
2017-08-27 21:15:17 +08:00
"exptest-253", /* 253 (Use for experimentation and testing,
* RFC 3692)
*/
"exptest-254", /* 254 (Use for experimentation and testing,
* RFC 3692)
*/
"reserved", /* 255 (reserved) */
};
/* The function enforces the array index to be 8-bit. */
const char *
Make nd_uint8_t and nd_int8_t arrays, to catch direct references. This catches direct references, so we can change them to use EXTRACT_U_1 or EXTRACT_S_1. Also, change some structures to use the nd_ types that weren't already using them. Then make the appropriate EXTRACT_{U,S}_1() changes.
2017-12-11 08:23:34 +08:00
netdb_protoname (const uint8_t protoid)
Use a table instead of getprotobynumber(). On Linux getprotobynumber() returns different results for the same argument depending on the contents of /etc/protocols at runtime (expectedly but gets in the way of reproducible test cases). On FreeBSD it returns results that are irrelevant of the contents of /etc/protocols at runtime (unexpectedly). Other implementations exist and may expose interesting properties too. And if the host uses LDAP instead of /etc/protocols for name services, a call to that function may cause LDAP handle the request. All of the above is not right for the specific task of network protocols decoding, which needs to be fast and deterministic. As the protocol number space is just 8-bit, add a 256-element array of strings/NULLs for the translation and a wrapper function around it for index range enforcement. Change the code to use the new function instead of getprotobynumber(). Fix a typo while at it.
2017-08-27 21:15:17 +08:00
{
return netdb_protocol_names[protoid];
}
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