facc953e5d10f27497534404b0dfa2174465bca6
[strongswan.git] / src / pluto / vendor.c
1 /* ISAKMP VendorID
2 * Copyright (C) 2002-2005 Mathieu Lafon - Arkoon Network Security
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 */
14
15 #include <stdlib.h>
16 #include <string.h>
17 #include <ctype.h>
18 #include <sys/queue.h>
19 #include <freeswan.h>
20
21 #include "constants.h"
22 #include "defs.h"
23 #include "log.h"
24 #include "md5.h"
25 #include "connections.h"
26 #include "packet.h"
27 #include "demux.h"
28 #include "whack.h"
29 #include "vendor.h"
30 #include "kernel.h"
31 #include "nat_traversal.h"
32
33 /**
34 * Unknown/Special VID:
35 *
36 * SafeNet SoftRemote 8.0.0:
37 * 47bbe7c993f1fc13b4e6d0db565c68e5010201010201010310382e302e3020284275696c6420313029000000
38 * >> 382e302e3020284275696c6420313029 = '8.0.0 (Build 10)'
39 * da8e937880010000
40 *
41 * SafeNet SoftRemote 9.0.1
42 * 47bbe7c993f1fc13b4e6d0db565c68e5010201010201010310392e302e3120284275696c6420313229000000
43 * >> 392e302e3120284275696c6420313229 = '9.0.1 (Build 12)'
44 * da8e937880010000
45 *
46 * Netscreen:
47 * d6b45f82f24bacb288af59a978830ab7
48 * cf49908791073fb46439790fdeb6aeed981101ab0000000500000300
49 *
50 * Cisco:
51 * 1f07f70eaa6514d3b0fa96542a500300 (VPN 3000 version 3.0.0)
52 * 1f07f70eaa6514d3b0fa96542a500301 (VPN 3000 version 3.0.1)
53 * 1f07f70eaa6514d3b0fa96542a500305 (VPN 3000 version 3.0.5)
54 * 1f07f70eaa6514d3b0fa96542a500407 (VPN 3000 version 4.0.7)
55 * (Can you see the pattern?)
56 * afcad71368a1f1c96b8696fc77570100 (Non-RFC Dead Peer Detection ?)
57 * c32364b3b4f447eb17c488ab2a480a57
58 * 6d761ddc26aceca1b0ed11fabbb860c4
59 * 5946c258f99a1a57b03eb9d1759e0f24 (From a Cisco VPN 3k)
60 * ebbc5b00141d0c895e11bd395902d690 (From a Cisco VPN 3k)
61 *
62 * Microsoft L2TP (???):
63 * 47bbe7c993f1fc13b4e6d0db565c68e5010201010201010310382e312e3020284275696c6420313029000000
64 * >> 382e312e3020284275696c6420313029 = '8.1.0 (Build 10)'
65 * 3025dbd21062b9e53dc441c6aab5293600000000
66 * da8e937880010000
67 *
68 * 3COM-superstack
69 * da8e937880010000
70 * 404bf439522ca3f6
71 *
72
73 * If someone know what they mean, mail me.
74 */
75
76 #define MAX_LOG_VID_LEN 32
77
78 #define VID_KEEP 0x0000
79 #define VID_MD5HASH 0x0001
80 #define VID_STRING 0x0002
81 #define VID_FSWAN_HASH 0x0004
82
83 #define VID_SUBSTRING_DUMPHEXA 0x0100
84 #define VID_SUBSTRING_DUMPASCII 0x0200
85 #define VID_SUBSTRING_MATCH 0x0400
86 #define VID_SUBSTRING (VID_SUBSTRING_DUMPHEXA | VID_SUBSTRING_DUMPASCII | VID_SUBSTRING_MATCH)
87
88 struct vid_struct {
89 enum known_vendorid id;
90 unsigned short flags;
91 const char *data;
92 const char *descr;
93 char *vid;
94 u_int vid_len;
95 };
96
97 #define DEC_MD5_VID_D(id,str,descr) \
98 { VID_##id, VID_MD5HASH, str, descr, NULL, 0 },
99 #define DEC_MD5_VID(id,str) \
100 { VID_##id, VID_MD5HASH, str, NULL, NULL, 0 },
101 #define DEC_FSWAN_VID(id,str,descr) \
102 { VID_##id, VID_FSWAN_HASH, str, descr, NULL, 0 },
103
104 static struct vid_struct _vid_tab[] = {
105
106 /* Implementation names */
107
108 { VID_OPENPGP, VID_STRING, "OpenPGP10171", "OpenPGP", NULL, 0 },
109
110 DEC_MD5_VID(KAME_RACOON, "KAME/racoon")
111
112 { VID_MS_NT5, VID_MD5HASH | VID_SUBSTRING_DUMPHEXA,
113 "MS NT5 ISAKMPOAKLEY", NULL, NULL, 0 },
114
115 DEC_MD5_VID(SSH_SENTINEL, "SSH Sentinel")
116 DEC_MD5_VID(SSH_SENTINEL_1_1, "SSH Sentinel 1.1")
117 DEC_MD5_VID(SSH_SENTINEL_1_2, "SSH Sentinel 1.2")
118 DEC_MD5_VID(SSH_SENTINEL_1_3, "SSH Sentinel 1.3")
119 DEC_MD5_VID(SSH_SENTINEL_1_4, "SSH Sentinel 1.4")
120 DEC_MD5_VID(SSH_SENTINEL_1_4_1, "SSH Sentinel 1.4.1")
121
122 /* These ones come from SSH vendors.txt */
123 DEC_MD5_VID(SSH_IPSEC_1_1_0,
124 "Ssh Communications Security IPSEC Express version 1.1.0")
125 DEC_MD5_VID(SSH_IPSEC_1_1_1,
126 "Ssh Communications Security IPSEC Express version 1.1.1")
127 DEC_MD5_VID(SSH_IPSEC_1_1_2,
128 "Ssh Communications Security IPSEC Express version 1.1.2")
129 DEC_MD5_VID(SSH_IPSEC_1_2_1,
130 "Ssh Communications Security IPSEC Express version 1.2.1")
131 DEC_MD5_VID(SSH_IPSEC_1_2_2,
132 "Ssh Communications Security IPSEC Express version 1.2.2")
133 DEC_MD5_VID(SSH_IPSEC_2_0_0,
134 "SSH Communications Security IPSEC Express version 2.0.0")
135 DEC_MD5_VID(SSH_IPSEC_2_1_0,
136 "SSH Communications Security IPSEC Express version 2.1.0")
137 DEC_MD5_VID(SSH_IPSEC_2_1_1,
138 "SSH Communications Security IPSEC Express version 2.1.1")
139 DEC_MD5_VID(SSH_IPSEC_2_1_2,
140 "SSH Communications Security IPSEC Express version 2.1.2")
141 DEC_MD5_VID(SSH_IPSEC_3_0_0,
142 "SSH Communications Security IPSEC Express version 3.0.0")
143 DEC_MD5_VID(SSH_IPSEC_3_0_1,
144 "SSH Communications Security IPSEC Express version 3.0.1")
145 DEC_MD5_VID(SSH_IPSEC_4_0_0,
146 "SSH Communications Security IPSEC Express version 4.0.0")
147 DEC_MD5_VID(SSH_IPSEC_4_0_1,
148 "SSH Communications Security IPSEC Express version 4.0.1")
149 DEC_MD5_VID(SSH_IPSEC_4_1_0,
150 "SSH Communications Security IPSEC Express version 4.1.0")
151 DEC_MD5_VID(SSH_IPSEC_4_2_0,
152 "SSH Communications Security IPSEC Express version 4.2.0")
153
154 /* note: md5('CISCO-UNITY') = 12f5f28c457168a9702d9fe274cc02d4 */
155 { VID_CISCO_UNITY, VID_KEEP, NULL, "Cisco-Unity",
156 "\x12\xf5\xf2\x8c\x45\x71\x68\xa9\x70\x2d\x9f\xe2\x74\xcc\x01\x00",
157 16 },
158
159 { VID_CISCO3K, VID_KEEP | VID_SUBSTRING_MATCH,
160 NULL, "Cisco VPN 3000 Series" , "\x1f\x07\xf7\x0e\xaa\x65\x14\xd3\xb0\xfa\x96\x54\x2a\x50", 14},
161
162 { VID_CISCO_IOS, VID_KEEP | VID_SUBSTRING_MATCH,
163 NULL, "Cisco IOS Device", "\x3e\x98\x40\x48", 4},
164
165 /*
166 * Timestep VID seen:
167 * - 54494d455354455020312053475720313532302033313520322e303145303133
168 * = 'TIMESTEP 1 SGW 1520 315 2.01E013'
169 */
170 { VID_TIMESTEP, VID_STRING | VID_SUBSTRING_DUMPASCII, "TIMESTEP",
171 NULL, NULL, 0 },
172
173 /*
174 * Netscreen:
175 * 4865617274426561745f4e6f74696679386b0100 (HeartBeat_Notify + 386b0100)
176 */
177 { VID_MISC_HEARTBEAT_NOTIFY, VID_STRING | VID_SUBSTRING_DUMPHEXA,
178 "HeartBeat_Notify", "HeartBeat Notify", NULL, 0 },
179
180 /*
181 * MacOS X
182 */
183 { VID_MACOSX, VID_STRING|VID_SUBSTRING_DUMPHEXA, "Mac OSX 10.x",
184 "\x4d\xf3\x79\x28\xe9\xfc\x4f\xd1\xb3\x26\x21\x70\xd5\x15\xc6\x62", NULL, 0},
185
186 /*
187 * Openswan
188 */
189 DEC_FSWAN_VID(OPENSWAN2, "Openswan 2.2.0", "Openswan 2.2.0")
190
191 /* NCP */
192 { VID_NCP_SERVER, VID_KEEP | VID_SUBSTRING_MATCH, NULL, "NCP Server",
193 "\xc6\xf5\x7a\xc3\x98\xf4\x93\x20\x81\x45\xb7\x58", 12},
194 { VID_NCP_CLIENT, VID_KEEP | VID_SUBSTRING_MATCH, NULL, "NCP Client",
195 "\xeb\x4c\x1b\x78\x8a\xfd\x4a\x9c\xb7\x73\x0a\x68", 12},
196
197 /*
198 * Windows Vista (and Windows Server 2008?)
199 */
200 DEC_MD5_VID(VISTA_AUTHIP, "MS-Negotiation Discovery Capable")
201 DEC_MD5_VID(VISTA_AUTHIP2, "IKE CGA version 1")
202 DEC_MD5_VID(VISTA_AUTHIP3, "MS-MamieExists")
203
204 /*
205 * strongSwan
206 */
207 DEC_MD5_VID(STRONGSWAN, "strongSwan 4.3.1")
208 DEC_MD5_VID(STRONGSWAN_4_3_0, "strongSwan 4.3.0")
209 DEC_MD5_VID(STRONGSWAN_4_2_14,"strongSwan 4.2.14")
210 DEC_MD5_VID(STRONGSWAN_4_2_13,"strongSwan 4.2.13")
211 DEC_MD5_VID(STRONGSWAN_4_2_12,"strongSwan 4.2.12")
212 DEC_MD5_VID(STRONGSWAN_4_2_11,"strongSwan 4.2.11")
213 DEC_MD5_VID(STRONGSWAN_4_2_10,"strongSwan 4.2.10")
214 DEC_MD5_VID(STRONGSWAN_4_2_9, "strongSwan 4.2.9")
215 DEC_MD5_VID(STRONGSWAN_4_2_8, "strongSwan 4.2.8")
216 DEC_MD5_VID(STRONGSWAN_4_2_7, "strongSwan 4.2.7")
217 DEC_MD5_VID(STRONGSWAN_4_2_6, "strongSwan 4.2.6")
218 DEC_MD5_VID(STRONGSWAN_4_2_5, "strongSwan 4.2.5")
219 DEC_MD5_VID(STRONGSWAN_4_2_4, "strongSwan 4.2.4")
220 DEC_MD5_VID(STRONGSWAN_4_2_3, "strongSwan 4.2.3")
221 DEC_MD5_VID(STRONGSWAN_4_2_2, "strongSwan 4.2.2")
222 DEC_MD5_VID(STRONGSWAN_4_2_1, "strongSwan 4.2.1")
223 DEC_MD5_VID(STRONGSWAN_4_2_0, "strongSwan 4.2.0")
224 DEC_MD5_VID(STRONGSWAN_4_1_11,"strongSwan 4.1.11")
225 DEC_MD5_VID(STRONGSWAN_4_1_10,"strongSwan 4.1.10")
226 DEC_MD5_VID(STRONGSWAN_4_1_9, "strongSwan 4.1.9")
227 DEC_MD5_VID(STRONGSWAN_4_1_8, "strongSwan 4.1.8")
228 DEC_MD5_VID(STRONGSWAN_4_1_7, "strongSwan 4.1.7")
229 DEC_MD5_VID(STRONGSWAN_4_1_6, "strongSwan 4.1.6")
230 DEC_MD5_VID(STRONGSWAN_4_1_5, "strongSwan 4.1.5")
231 DEC_MD5_VID(STRONGSWAN_4_1_4, "strongSwan 4.1.4")
232 DEC_MD5_VID(STRONGSWAN_4_1_3, "strongSwan 4.1.3")
233 DEC_MD5_VID(STRONGSWAN_4_1_2, "strongSwan 4.1.2")
234 DEC_MD5_VID(STRONGSWAN_4_1_1, "strongSwan 4.1.1")
235 DEC_MD5_VID(STRONGSWAN_4_1_0, "strongSwan 4.1.0")
236 DEC_MD5_VID(STRONGSWAN_4_0_7, "strongSwan 4.0.7")
237 DEC_MD5_VID(STRONGSWAN_4_0_6, "strongSwan 4.0.6")
238 DEC_MD5_VID(STRONGSWAN_4_0_5, "strongSwan 4.0.5")
239 DEC_MD5_VID(STRONGSWAN_4_0_4, "strongSwan 4.0.4")
240 DEC_MD5_VID(STRONGSWAN_4_0_3, "strongSwan 4.0.3")
241 DEC_MD5_VID(STRONGSWAN_4_0_2, "strongSwan 4.0.2")
242 DEC_MD5_VID(STRONGSWAN_4_0_1, "strongSwan 4.0.1")
243 DEC_MD5_VID(STRONGSWAN_4_0_0, "strongSwan 4.0.0")
244
245 DEC_MD5_VID(STRONGSWAN_2_8_9, "strongSwan 2.8.9")
246 DEC_MD5_VID(STRONGSWAN_2_8_8, "strongSwan 2.8.8")
247 DEC_MD5_VID(STRONGSWAN_2_8_7, "strongSwan 2.8.7")
248 DEC_MD5_VID(STRONGSWAN_2_8_6, "strongSwan 2.8.6")
249 DEC_MD5_VID(STRONGSWAN_2_8_5, "strongSwan 2.8.5")
250 DEC_MD5_VID(STRONGSWAN_2_8_4, "strongSwan 2.8.4")
251 DEC_MD5_VID(STRONGSWAN_2_8_3, "strongSwan 2.8.3")
252 DEC_MD5_VID(STRONGSWAN_2_8_2, "strongSwan 2.8.2")
253 DEC_MD5_VID(STRONGSWAN_2_8_1, "strongSwan 2.8.1")
254 DEC_MD5_VID(STRONGSWAN_2_8_0, "strongSwan 2.8.0")
255 DEC_MD5_VID(STRONGSWAN_2_7_3, "strongSwan 2.7.3")
256 DEC_MD5_VID(STRONGSWAN_2_7_2, "strongSwan 2.7.2")
257 DEC_MD5_VID(STRONGSWAN_2_7_1, "strongSwan 2.7.1")
258 DEC_MD5_VID(STRONGSWAN_2_7_0, "strongSwan 2.7.0")
259 DEC_MD5_VID(STRONGSWAN_2_6_4, "strongSwan 2.6.4")
260 DEC_MD5_VID(STRONGSWAN_2_6_3, "strongSwan 2.6.3")
261 DEC_MD5_VID(STRONGSWAN_2_6_2, "strongSwan 2.6.2")
262 DEC_MD5_VID(STRONGSWAN_2_6_1, "strongSwan 2.6.1")
263 DEC_MD5_VID(STRONGSWAN_2_6_0, "strongSwan 2.6.0")
264 DEC_MD5_VID(STRONGSWAN_2_5_7, "strongSwan 2.5.7")
265 DEC_MD5_VID(STRONGSWAN_2_5_6, "strongSwan 2.5.6")
266 DEC_MD5_VID(STRONGSWAN_2_5_5, "strongSwan 2.5.5")
267 DEC_MD5_VID(STRONGSWAN_2_5_4, "strongSwan 2.5.4")
268 DEC_MD5_VID(STRONGSWAN_2_5_3, "strongSwan 2.5.3")
269 DEC_MD5_VID(STRONGSWAN_2_5_2, "strongSwan 2.5.2")
270 DEC_MD5_VID(STRONGSWAN_2_5_1, "strongSwan 2.5.1")
271 DEC_MD5_VID(STRONGSWAN_2_5_0, "strongSwan 2.5.0")
272 DEC_MD5_VID(STRONGSWAN_2_4_4, "strongSwan 2.4.4")
273 DEC_MD5_VID(STRONGSWAN_2_4_3, "strongSwan 2.4.3")
274 DEC_MD5_VID(STRONGSWAN_2_4_2, "strongSwan 2.4.2")
275 DEC_MD5_VID(STRONGSWAN_2_4_1, "strongSwan 2.4.1")
276 DEC_MD5_VID(STRONGSWAN_2_4_0, "strongSwan 2.4.0")
277 DEC_MD5_VID(STRONGSWAN_2_3_2, "strongSwan 2.3.2")
278 DEC_MD5_VID(STRONGSWAN_2_3_1, "strongSwan 2.3.1")
279 DEC_MD5_VID(STRONGSWAN_2_3_0, "strongSwan 2.3.0")
280 DEC_MD5_VID(STRONGSWAN_2_2_2, "strongSwan 2.2.2")
281 DEC_MD5_VID(STRONGSWAN_2_2_1, "strongSwan 2.2.1")
282 DEC_MD5_VID(STRONGSWAN_2_2_0, "strongSwan 2.2.0")
283
284 /* NAT-Traversal */
285
286 DEC_MD5_VID(NATT_STENBERG_01, "draft-stenberg-ipsec-nat-traversal-01")
287 DEC_MD5_VID(NATT_STENBERG_02, "draft-stenberg-ipsec-nat-traversal-02")
288 DEC_MD5_VID(NATT_HUTTUNEN, "ESPThruNAT")
289 DEC_MD5_VID(NATT_HUTTUNEN_ESPINUDP, "draft-huttunen-ipsec-esp-in-udp-00.txt")
290 DEC_MD5_VID(NATT_IETF_00, "draft-ietf-ipsec-nat-t-ike-00")
291 DEC_MD5_VID(NATT_IETF_02, "draft-ietf-ipsec-nat-t-ike-02")
292 /* hash in draft-ietf-ipsec-nat-t-ike-02 contains '\n'... Accept both */
293 DEC_MD5_VID_D(NATT_IETF_02_N, "draft-ietf-ipsec-nat-t-ike-02\n", "draft-ietf-ipsec-nat-t-ike-02_n")
294 DEC_MD5_VID(NATT_IETF_03, "draft-ietf-ipsec-nat-t-ike-03")
295 DEC_MD5_VID(NATT_RFC, "RFC 3947")
296
297 /* misc */
298
299 { VID_MISC_XAUTH, VID_KEEP, NULL, "XAUTH",
300 "\x09\x00\x26\x89\xdf\xd6\xb7\x12", 8 },
301
302 { VID_MISC_DPD, VID_KEEP, NULL, "Dead Peer Detection",
303 "\xaf\xca\xd7\x13\x68\xa1\xf1\xc9\x6b\x86\x96\xfc\x77\x57\x01\x00", 16 },
304
305 DEC_MD5_VID(MISC_FRAGMENTATION, "FRAGMENTATION")
306
307 DEC_MD5_VID(INITIAL_CONTACT, "Vid-Initial-Contact")
308
309 /**
310 * Cisco VPN 3000
311 */
312 { VID_MISC_FRAGMENTATION, VID_MD5HASH | VID_SUBSTRING_DUMPHEXA,
313 "FRAGMENTATION", NULL, NULL, 0 },
314
315 /* -- */
316 { 0, 0, NULL, NULL, NULL, 0 }
317
318 };
319
320 static const char _hexdig[] = "0123456789abcdef";
321
322 static int _vid_struct_init = 0;
323
324 void init_vendorid(void)
325 {
326 struct vid_struct *vid;
327 MD5_CTX ctx;
328 int i;
329
330 for (vid = _vid_tab; vid->id; vid++)
331 {
332 if (vid->flags & VID_STRING)
333 {
334 /** VendorID is a string **/
335 vid->vid = strdup(vid->data);
336 vid->vid_len = strlen(vid->data);
337 }
338 else if (vid->flags & VID_MD5HASH)
339 {
340 /** VendorID is a string to hash with MD5 **/
341 char *vidm = malloc(MD5_DIGEST_SIZE);
342
343 vid->vid = vidm;
344 if (vidm)
345 {
346 MD5Init(&ctx);
347 MD5Update(&ctx, (const u_char *)vid->data, strlen(vid->data));
348 MD5Final(vidm, &ctx);
349 vid->vid_len = MD5_DIGEST_SIZE;
350 }
351 }
352 else if (vid->flags & VID_FSWAN_HASH)
353 {
354 /** FreeS/WAN 2.00+ specific hash **/
355 #define FSWAN_VID_SIZE 12
356 unsigned char hash[MD5_DIGEST_SIZE];
357 char *vidm = malloc(FSWAN_VID_SIZE);
358
359 vid->vid = vidm;
360 if (vidm)
361 {
362 MD5Init(&ctx);
363 MD5Update(&ctx, (const u_char *)vid->data, strlen(vid->data));
364 MD5Final(hash, &ctx);
365 vidm[0] = 'O';
366 vidm[1] = 'E';
367 #if FSWAN_VID_SIZE - 2 <= MD5_DIGEST_SIZE
368 memcpy(vidm + 2, hash, FSWAN_VID_SIZE - 2);
369 #else
370 memcpy(vidm + 2, hash, MD5_DIGEST_SIZE);
371 memset(vidm + 2 + MD5_DIGEST_SIZE, '\0',
372 FSWAN_VID_SIZE - 2 - MD5_DIGEST_SIZE);
373 #endif
374 for (i = 2; i < FSWAN_VID_SIZE; i++)
375 {
376 vidm[i] &= 0x7f;
377 vidm[i] |= 0x40;
378 }
379 vid->vid_len = FSWAN_VID_SIZE;
380 }
381 }
382
383 if (vid->descr == NULL)
384 {
385 /** Find something to display **/
386 vid->descr = vid->data;
387 }
388 }
389 _vid_struct_init = 1;
390 }
391
392 void free_vendorid(void)
393 {
394 struct vid_struct *vid;
395
396 for (vid = _vid_tab; vid->id; vid++)
397 {
398 if (vid->flags & (VID_STRING | VID_MD5HASH | VID_FSWAN_HASH))
399 {
400 free(vid->vid);
401 }
402 }
403 }
404
405 static void handle_known_vendorid (struct msg_digest *md, const char *vidstr,
406 size_t len, struct vid_struct *vid)
407 {
408 char vid_dump[128];
409 bool vid_useful = FALSE;
410 size_t i, j;
411
412 switch (vid->id) {
413 /* Remote side supports OpenPGP certificates */
414 case VID_OPENPGP:
415 md->openpgp = TRUE;
416 vid_useful = TRUE;
417 break;
418
419 /*
420 * Use most recent supported NAT-Traversal method and ignore the
421 * other ones (implementations will send all supported methods but
422 * only one will be used)
423 *
424 * Note: most recent == higher id in vendor.h
425 */
426 case VID_NATT_IETF_00:
427 if (!nat_traversal_support_non_ike)
428 break;
429 if ((nat_traversal_enabled) && (!md->nat_traversal_vid))
430 {
431 md->nat_traversal_vid = vid->id;
432 vid_useful = TRUE;
433 }
434 break;
435 case VID_NATT_IETF_02:
436 case VID_NATT_IETF_02_N:
437 case VID_NATT_IETF_03:
438 case VID_NATT_RFC:
439 if (nat_traversal_support_port_floating
440 && md->nat_traversal_vid < vid->id)
441 {
442 md->nat_traversal_vid = vid->id;
443 vid_useful = TRUE;
444 }
445 break;
446
447 /* Remote side would like to do DPD with us on this connection */
448 case VID_MISC_DPD:
449 md->dpd = TRUE;
450 vid_useful = TRUE;
451 break;
452 case VID_MISC_XAUTH:
453 vid_useful = TRUE;
454 break;
455 default:
456 break;
457 }
458
459 if (vid->flags & VID_SUBSTRING_DUMPHEXA)
460 {
461 /* Dump description + Hexa */
462 memset(vid_dump, 0, sizeof(vid_dump));
463 snprintf(vid_dump, sizeof(vid_dump), "%s ",
464 vid->descr ? vid->descr : "");
465 for (i = strlen(vid_dump), j = vid->vid_len;
466 j < len && i < sizeof(vid_dump) - 2;
467 i += 2, j++)
468 {
469 vid_dump[i] = _hexdig[(vidstr[j] >> 4) & 0xF];
470 vid_dump[i+1] = _hexdig[vidstr[j] & 0xF];
471 }
472 }
473 else if (vid->flags & VID_SUBSTRING_DUMPASCII)
474 {
475 /* Dump ASCII content */
476 memset(vid_dump, 0, sizeof(vid_dump));
477 for (i = 0; i < len && i < sizeof(vid_dump) - 1; i++)
478 {
479 vid_dump[i] = (isprint(vidstr[i])) ? vidstr[i] : '.';
480 }
481 }
482 else
483 {
484 /* Dump description (descr) */
485 snprintf(vid_dump, sizeof(vid_dump), "%s",
486 vid->descr ? vid->descr : "");
487 }
488
489 loglog(RC_LOG_SERIOUS, "%s Vendor ID payload [%s]",
490 vid_useful ? "received" : "ignoring", vid_dump);
491 }
492
493 void handle_vendorid (struct msg_digest *md, const char *vid, size_t len)
494 {
495 struct vid_struct *pvid;
496
497 if (!_vid_struct_init)
498 init_vendorid();
499
500 /*
501 * Find known VendorID in _vid_tab
502 */
503 for (pvid = _vid_tab; pvid->id; pvid++)
504 {
505 if (pvid->vid && vid && pvid->vid_len && len)
506 {
507 if (pvid->vid_len == len)
508 {
509 if (memeq(pvid->vid, vid, len))
510 {
511 handle_known_vendorid(md, vid, len, pvid);
512 return;
513 }
514 }
515 else if ((pvid->vid_len < len) && (pvid->flags & VID_SUBSTRING))
516 {
517 if (memeq(pvid->vid, vid, pvid->vid_len))
518 {
519 handle_known_vendorid(md, vid, len, pvid);
520 return;
521 }
522 }
523 }
524 }
525
526 /*
527 * Unknown VendorID. Log the beginning.
528 */
529 {
530 char log_vid[2*MAX_LOG_VID_LEN+1];
531 size_t i;
532
533 memset(log_vid, 0, sizeof(log_vid));
534
535 for (i = 0; i < len && i < MAX_LOG_VID_LEN; i++)
536 {
537 log_vid[2*i] = _hexdig[(vid[i] >> 4) & 0xF];
538 log_vid[2*i+1] = _hexdig[vid[i] & 0xF];
539 }
540 loglog(RC_LOG_SERIOUS, "ignoring Vendor ID payload [%s%s]",
541 log_vid, (len>MAX_LOG_VID_LEN) ? "..." : "");
542 }
543 }
544
545 /**
546 * Add a vendor id payload to the msg
547 */
548 bool out_vendorid (u_int8_t np, pb_stream *outs, enum known_vendorid vid)
549 {
550 struct vid_struct *pvid;
551
552 if (!_vid_struct_init)
553 init_vendorid();
554
555 for (pvid = _vid_tab; pvid->id && pvid->id != vid; pvid++);
556
557 if (pvid->id != vid)
558 return STF_INTERNAL_ERROR; /* not found */
559 if (!pvid->vid)
560 return STF_INTERNAL_ERROR; /* not initialized */
561
562 DBG(DBG_EMITTING,
563 DBG_log("out_vendorid(): sending [%s]", pvid->descr)
564 )
565 return out_generic_raw(np, &isakmp_vendor_id_desc, outs,
566 pvid->vid, pvid->vid_len, "V_ID");
567 }
568