1/*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that: (1) source code
4 * distributions retain the above copyright notice and this paragraph
5 * in its entirety, and (2) distributions including binary code include
6 * the above copyright notice and this paragraph in its entirety in
7 * the documentation or other materials provided with the distribution.
8 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11 * FOR A PARTICULAR PURPOSE.
12 *
13 * Original code by Hannes Gredler (hannes@gredler.at)
14 */
15
16#ifdef HAVE_CONFIG_H
17#include <config.h>
18#endif
19
20#include "netdissect-stdinc.h"
21
22#include "netdissect.h"
23#include "ipproto.h"
24
25const struct tok ipproto_values[] = {
26    { IPPROTO_HOPOPTS, "Options" },
27    { IPPROTO_ICMP, "ICMP" },
28    { IPPROTO_IGMP, "IGMP" },
29    { IPPROTO_IPV4, "IPIP" },
30    { IPPROTO_TCP, "TCP" },
31    { IPPROTO_EGP, "EGP" },
32    { IPPROTO_PIGP, "IGRP" },
33    { IPPROTO_UDP, "UDP" },
34    { IPPROTO_DCCP, "DCCP" },
35    { IPPROTO_IPV6, "IPv6" },
36    { IPPROTO_ROUTING, "Routing" },
37    { IPPROTO_FRAGMENT, "Fragment" },
38    { IPPROTO_RSVP, "RSVP" },
39    { IPPROTO_GRE, "GRE" },
40    { IPPROTO_ESP, "ESP" },
41    { IPPROTO_AH, "AH" },
42    { IPPROTO_MOBILE, "Mobile IP" },
43    { IPPROTO_ICMPV6, "ICMPv6" },
44    { IPPROTO_MOBILITY_OLD, "Mobile IP (old)" },
45    { IPPROTO_EIGRP, "EIGRP" },
46    { IPPROTO_OSPF, "OSPF" },
47    { IPPROTO_PIM, "PIM" },
48    { IPPROTO_IPCOMP, "Compressed IP" },
49    { IPPROTO_VRRP, "VRRP" }, /* See also CARP. */
50    { IPPROTO_PGM, "PGM" },
51    { IPPROTO_SCTP, "SCTP" },
52    { IPPROTO_MOBILITY, "Mobility" },
53    { IPPROTO_PFSYNC, "pfsync" },
54    { IPPROTO_ETHERNET, "Ethernet" },
55    { 0, NULL }
56};
57
58/*
59 * For completeness the number space in the array below comes from IANA:
60 * https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
61 * However, the spelling tries to match that of /etc/protocols to achieve as
62 * much consistency as possible with the previously implemented behaviour,
63 * which was based on getprotobynumber (3).
64 */
65static const char *netdb_protocol_names[256] = {
66	"hopopt",            /* 0 (IPPROTO_HOPOPTS, IPv6 Hop-by-Hop Option) */
67	"icmp",              /* 1 (IPPROTO_ICMP, Internet Control Message) */
68	"igmp",              /* 2 (IPPROTO_IGMP, Internet Group Management) */
69	"ggp",               /* 3 (Gateway-to-Gateway) */
70	"ipencap",           /* 4 (IPPROTO_IPV4, IPv4 encapsulation) */
71	"st",                /* 5 (Stream, ST datagram mode) */
72	"tcp",               /* 6 (IPPROTO_TCP, Transmission Control) */
73	"cbt",               /* 7 (CBT) */
74	"egp",               /* 8 (IPPROTO_EGP, Exterior Gateway Protocol) */
75	"igp",               /* 9 (IPPROTO_PIGP, "any private interior gateway
76	                      *   (used by Cisco for their IGRP)")
77	                      */
78	"bbn-rcc-mon",       /* 10 (BBN RCC Monitoring) */
79	"nvp-ii",            /* 11 (Network Voice Protocol) */
80	"pup",               /* 12 (PARC universal packet protocol) */
81	"argus",             /* 13 (ARGUS) */
82	"emcon",             /* 14 (EMCON) */
83	"xnet",              /* 15 (Cross Net Debugger) */
84	"chaos",             /* 16 (Chaos) */
85	"udp",               /* 17 (IPPROTO_UDP, User Datagram) */
86	"mux",               /* 18 (Multiplexing) */
87	"dcn-meas",          /* 19 (DCN Measurement Subsystems) */
88	"hmp",               /* 20 (Host Monitoring) */
89	"prm",               /* 21 (Packet Radio Measurement) */
90	"xns-idp",           /* 22 (XEROX NS IDP) */
91	"trunk-1",           /* 23 (Trunk-1) */
92	"trunk-2",           /* 24 (Trunk-2) */
93	"leaf-1",            /* 25 (Leaf-1) */
94	"leaf-2",            /* 26 (Leaf-2) */
95	"rdp",               /* 27 (Reliable Data Protocol) */
96	"irtp",              /* 28 (Internet Reliable Transaction) */
97	"iso-tp4",           /* 29 (ISO Transport Protocol Class 4) */
98	"netblt",            /* 30 (Bulk Data Transfer Protocol) */
99	"mfe-nsp",           /* 31 (MFE Network Services Protocol) */
100	"merit-inp",         /* 32 (MERIT Internodal Protocol) */
101	"dccp",              /* 33 (IPPROTO_DCCP, Datagram Congestion
102	                      *    Control Protocol)
103	                      */
104	"3pc",               /* 34 (Third Party Connect Protocol) */
105	"idpr",              /* 35 (Inter-Domain Policy Routing Protocol) */
106	"xtp",               /* 36 (Xpress Transfer Protocol) */
107	"ddp",               /* 37 (Datagram Delivery Protocol) */
108	"idpr-cmtp",         /* 38 (IDPR Control Message Transport Proto) */
109	"tp++",              /* 39 (TP++ Transport Protocol) */
110	"il",                /* 40 (IL Transport Protocol) */
111	"ipv6",              /* 41 (IPPROTO_IPV6, IPv6 encapsulation) */
112	"sdrp",              /* 42 (Source Demand Routing Protocol) */
113	"ipv6-route",        /* 43 (IPPROTO_ROUTING, Routing Header for IPv6) */
114	"ipv6-frag",         /* 44 (IPPROTO_FRAGMENT, Fragment Header for
115	                      *    IPv6)
116	                      */
117	"idrp",              /* 45 (Inter-Domain Routing Protocol) */
118	"rsvp",              /* 46 (IPPROTO_RSVP, Reservation Protocol) */
119	"gre",               /* 47 (IPPROTO_GRE, Generic Routing
120	                      *    Encapsulation)
121	                      */
122	"dsr",               /* 48 (Dynamic Source Routing Protocol) */
123	"bna",               /* 49 (BNA) */
124	"esp",               /* 50 (IPPROTO_ESP, Encap Security Payload) */
125	"ah",                /* 51 (IPPROTO_AH, Authentication Header) */
126	"i-nlsp",            /* 52 (Integrated Net Layer Security TUBA) */
127	"swipe",             /* 53 (IP with Encryption) */
128	"narp",              /* 54 (NBMA Address Resolution Protocol) */
129	"mobile",            /* 55 (IPPROTO_MOBILE, IP Mobility) */
130	"tlsp",              /* 56 (Transport Layer Security Protocol using
131	                      *    Kryptonet key management)
132	                      */
133	"skip",              /* 57 (SKIP) */
134	"ipv6-icmp",         /* 58 (IPPROTO_ICMPV6, ICMP for IPv6) */
135	"ipv6-nonxt",        /* 59 (IPPROTO_NONE, No Next Header for IPv6) */
136	"ipv6-opts",         /* 60 (IPPROTO_DSTOPTS, Destination Options for
137	                      *    IPv6)
138	                      */
139	NULL,                /* 61 (any host internal protocol) */
140	"cftp",              /* 62 (IPPROTO_MOBILITY_OLD, CFTP, see the note
141	                      *    in ipproto.h)
142	                      */
143	NULL,                /* 63 (any local network) */
144	"sat-expak",         /* 64 (SATNET and Backroom EXPAK) */
145	"kryptolan",         /* 65 (Kryptolan) */
146	"rvd",               /* 66 (MIT Remote Virtual Disk Protocol) */
147	"ippc",              /* 67 (Internet Pluribus Packet Core) */
148	NULL,                /* 68 (any distributed file system) */
149	"sat-mon",           /* 69 (SATNET Monitoring) */
150	"visa",              /* 70 (VISA Protocol) */
151	"ipcv",              /* 71 (Internet Packet Core Utility) */
152	"cpnx",              /* 72 (Computer Protocol Network Executive) */
153	"rspf",              /* 73 (Radio Shortest Path First, CPHB -- Computer
154	                      *    Protocol Heart Beat -- in IANA)
155	                      */
156	"wsn",               /* 74 (Wang Span Network) */
157	"pvp",               /* 75 (Packet Video Protocol) */
158	"br-sat-mon",        /* 76 (Backroom SATNET Monitoring) */
159	"sun-nd",            /* 77 (IPPROTO_ND, SUN ND PROTOCOL-Temporary) */
160	"wb-mon",            /* 78 (WIDEBAND Monitoring) */
161	"wb-expak",          /* 79 (WIDEBAND EXPAK) */
162	"iso-ip",            /* 80 (ISO Internet Protocol) */
163	"vmtp",              /* 81 (Versatile Message Transport) */
164	"secure-vmtp",       /* 82 (Secure VMTP) */
165	"vines",             /* 83 (VINES) */
166	"ttp",               /* 84 (Transaction Transport Protocol, also IPTM --
167	                      *    Internet Protocol Traffic Manager)
168	                      */
169	"nsfnet-igp",        /* 85 (NSFNET-IGP) */
170	"dgp",               /* 86 (Dissimilar Gateway Protocol) */
171	"tcf",               /* 87 (TCF) */
172	"eigrp",             /* 88 (IPPROTO_EIGRP, Cisco EIGRP) */
173	"ospf",              /* 89 (IPPROTO_OSPF, Open Shortest Path First
174	                      *    IGP)
175	                      */
176	"sprite-rpc",        /* 90 (Sprite RPC Protocol) */
177	"larp",              /* 91 (Locus Address Resolution Protocol) */
178	"mtp",               /* 92 (Multicast Transport Protocol) */
179	"ax.25",             /* 93 (AX.25 Frames) */
180	"ipip",              /* 94 (IP-within-IP Encapsulation Protocol) */
181	"micp",              /* 95 (Mobile Internetworking Control Pro.) */
182	"scc-sp",            /* 96 (Semaphore Communications Sec. Pro.) */
183	"etherip",           /* 97 (Ethernet-within-IP Encapsulation) */
184	"encap",             /* 98 (Encapsulation Header) */
185	NULL,                /* 99 (any private encryption scheme) */
186	"gmtp",              /* 100 (GMTP) */
187	"ifmp",              /* 101 (Ipsilon Flow Management Protocol) */
188	"pnni",              /* 102 (PNNI over IP) */
189	"pim",               /* 103 (IPPROTO_PIM, Protocol Independent
190	                      *     Multicast)
191	                      */
192	"aris",              /* 104 (ARIS) */
193	"scps",              /* 105 (SCPS) */
194	"qnx",               /* 106 (QNX) */
195	"a/n",               /* 107 (Active Networks) */
196	"ipcomp",            /* 108 (IPPROTO_IPCOMP, IP Payload Compression
197	                      *     Protocol)
198	                      */
199	"snp",               /* 109 (Sitara Networks Protocol) */
200	"compaq-peer",       /* 110 (Compaq Peer Protocol) */
201	"ipx-in-ip",         /* 111 (IPX in IP) */
202	"vrrp",              /* 112 (IPPROTO_VRRP, Virtual Router Redundancy
203	                      *     Protocol)
204	                      */
205	"pgm",               /* 113 (IPPROTO_PGM, PGM Reliable Transport
206	                      *     Protocol)
207	                      */
208	NULL,                /* 114 (any 0-hop protocol) */
209	"l2tp",              /* 115 (Layer Two Tunneling Protocol) */
210	"ddx",               /* 116 (D-II Data Exchange (DDX)) */
211	"iatp",              /* 117 (Interactive Agent Transfer Protocol) */
212	"stp",               /* 118 (Schedule Transfer Protocol) */
213	"srp",               /* 119 (SpectraLink Radio Protocol) */
214	"uti",               /* 120 (UTI) */
215	"smp",               /* 121 (Simple Message Protocol) */
216	"sm",                /* 122 (Simple Multicast Protocol) */
217	"ptp",               /* 123 (Performance Transparency Protocol) */
218	"isis",              /* 124 (ISIS over IPv4) */
219	"fire",              /* 125 (FIRE) */
220	"crtp",              /* 126 (Combat Radio Transport Protocol) */
221	"crudp",             /* 127 (Combat Radio User Datagram) */
222	"sscopmce",          /* 128 (SSCOPMCE) */
223	"iplt",              /* 129 (IPLT) */
224	"sps",               /* 130 (Secure Packet Shield) */
225	"pipe",              /* 131 (Private IP Encapsulation within IP) */
226	"sctp",              /* 132 (IPPROTO_SCTP, Stream Control Transmission
227	                      *     Protocol)
228	                      */
229	"fc",                /* 133 (Fibre Channel) */
230	"rsvp-e2e-ignore",   /* 134 (RSVP-E2E-IGNORE) */
231	"mobility-header",   /* 135 (IPPROTO_MOBILITY, Mobility Header) */
232	"udplite",           /* 136 (UDPLite) */
233	"mpls-in-ip",        /* 137 (MPLS-in-IP) */
234	"manet",             /* 138 (MANET Protocols) */
235	"hip",               /* 139 (Host Identity Protocol) */
236	"shim6",             /* 140 (Shim6 Protocol) */
237	"wesp",              /* 141 (Wrapped Encapsulating Security Payload) */
238	"rohc",              /* 142 (Robust Header Compression) */
239	NULL,                /* 143 (unassigned) */
240	NULL,                /* 144 (unassigned) */
241	NULL,                /* 145 (unassigned) */
242	NULL,                /* 146 (unassigned) */
243	NULL,                /* 147 (unassigned) */
244	NULL,                /* 148 (unassigned) */
245	NULL,                /* 149 (unassigned) */
246	NULL,                /* 150 (unassigned) */
247	NULL,                /* 151 (unassigned) */
248	NULL,                /* 152 (unassigned) */
249	NULL,                /* 153 (unassigned) */
250	NULL,                /* 154 (unassigned) */
251	NULL,                /* 155 (unassigned) */
252	NULL,                /* 156 (unassigned) */
253	NULL,                /* 157 (unassigned) */
254	NULL,                /* 158 (unassigned) */
255	NULL,                /* 159 (unassigned) */
256	NULL,                /* 160 (unassigned) */
257	NULL,                /* 161 (unassigned) */
258	NULL,                /* 162 (unassigned) */
259	NULL,                /* 163 (unassigned) */
260	NULL,                /* 164 (unassigned) */
261	NULL,                /* 165 (unassigned) */
262	NULL,                /* 166 (unassigned) */
263	NULL,                /* 167 (unassigned) */
264	NULL,                /* 168 (unassigned) */
265	NULL,                /* 169 (unassigned) */
266	NULL,                /* 170 (unassigned) */
267	NULL,                /* 171 (unassigned) */
268	NULL,                /* 172 (unassigned) */
269	NULL,                /* 173 (unassigned) */
270	NULL,                /* 174 (unassigned) */
271	NULL,                /* 175 (unassigned) */
272	NULL,                /* 176 (unassigned) */
273	NULL,                /* 177 (unassigned) */
274	NULL,                /* 178 (unassigned) */
275	NULL,                /* 179 (unassigned) */
276	NULL,                /* 180 (unassigned) */
277	NULL,                /* 181 (unassigned) */
278	NULL,                /* 182 (unassigned) */
279	NULL,                /* 183 (unassigned) */
280	NULL,                /* 184 (unassigned) */
281	NULL,                /* 185 (unassigned) */
282	NULL,                /* 186 (unassigned) */
283	NULL,                /* 187 (unassigned) */
284	NULL,                /* 188 (unassigned) */
285	NULL,                /* 189 (unassigned) */
286	NULL,                /* 190 (unassigned) */
287	NULL,                /* 191 (unassigned) */
288	NULL,                /* 192 (unassigned) */
289	NULL,                /* 193 (unassigned) */
290	NULL,                /* 194 (unassigned) */
291	NULL,                /* 195 (unassigned) */
292	NULL,                /* 196 (unassigned) */
293	NULL,                /* 197 (unassigned) */
294	NULL,                /* 198 (unassigned) */
295	NULL,                /* 199 (unassigned) */
296	NULL,                /* 200 (unassigned) */
297	NULL,                /* 201 (unassigned) */
298	NULL,                /* 202 (unassigned) */
299	NULL,                /* 203 (unassigned) */
300	NULL,                /* 204 (unassigned) */
301	NULL,                /* 205 (unassigned) */
302	NULL,                /* 206 (unassigned) */
303	NULL,                /* 207 (unassigned) */
304	NULL,                /* 208 (unassigned) */
305	NULL,                /* 209 (unassigned) */
306	NULL,                /* 210 (unassigned) */
307	NULL,                /* 211 (unassigned) */
308	NULL,                /* 212 (unassigned) */
309	NULL,                /* 213 (unassigned) */
310	NULL,                /* 214 (unassigned) */
311	NULL,                /* 215 (unassigned) */
312	NULL,                /* 216 (unassigned) */
313	NULL,                /* 217 (unassigned) */
314	NULL,                /* 218 (unassigned) */
315	NULL,                /* 219 (unassigned) */
316	NULL,                /* 220 (unassigned) */
317	NULL,                /* 221 (unassigned) */
318	NULL,                /* 222 (unassigned) */
319	NULL,                /* 223 (unassigned) */
320	NULL,                /* 224 (unassigned) */
321	NULL,                /* 225 (unassigned) */
322	NULL,                /* 226 (unassigned) */
323	NULL,                /* 227 (unassigned) */
324	NULL,                /* 228 (unassigned) */
325	NULL,                /* 229 (unassigned) */
326	NULL,                /* 230 (unassigned) */
327	NULL,                /* 231 (unassigned) */
328	NULL,                /* 232 (unassigned) */
329	NULL,                /* 233 (unassigned) */
330	NULL,                /* 234 (unassigned) */
331	NULL,                /* 235 (unassigned) */
332	NULL,                /* 236 (unassigned) */
333	NULL,                /* 237 (unassigned) */
334	NULL,                /* 238 (unassigned) */
335	NULL,                /* 239 (unassigned) */
336	NULL,                /* 240 (unassigned) */
337	NULL,                /* 241 (unassigned) */
338	NULL,                /* 242 (unassigned) */
339	NULL,                /* 243 (unassigned) */
340	NULL,                /* 244 (unassigned) */
341	NULL,                /* 245 (unassigned) */
342	NULL,                /* 246 (unassigned) */
343	NULL,                /* 247 (unassigned) */
344	NULL,                /* 248 (unassigned) */
345	NULL,                /* 249 (unassigned) */
346	NULL,                /* 250 (unassigned) */
347	NULL,                /* 251 (unassigned) */
348	NULL,                /* 252 (unassigned) */
349	"exptest-253",       /* 253 (Use for experimentation and testing,
350	                      *     RFC 3692)
351	                      */
352	"exptest-254",       /* 254 (Use for experimentation and testing,
353	                      *     RFC 3692)
354	                      */
355	"reserved",          /* 255 (reserved) */
356};
357
358/* The function enforces the array index to be 8-bit. */
359const char *
360netdb_protoname (const uint8_t protoid)
361{
362	return netdb_protocol_names[protoid];
363}
364