1/* 2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the project nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31#ifndef lint 32static const char rcsid[] _U_ = 33 "@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.61 2008-02-05 19:34:25 guy Exp $ (LBL)"; 34#endif 35 36#define NETDISSECT_REWORKED 37#ifdef HAVE_CONFIG_H 38#include "config.h" 39#endif 40 41#include <tcpdump-stdinc.h> 42 43#include <string.h> 44 45#include <stdio.h> 46 47#include "isakmp.h" 48#include "ipsec_doi.h" 49#include "oakley.h" 50#include "interface.h" 51#include "addrtoname.h" 52#include "extract.h" /* must come after interface.h */ 53 54#include "ip.h" 55#ifdef INET6 56#include "ip6.h" 57#endif 58 59#ifndef HAVE_SOCKADDR_STORAGE 60#define sockaddr_storage sockaddr 61#endif 62 63#define DECLARE_PRINTER(func) static const u_char *ike##func##_print( \ 64 netdissect_options *ndo, u_char tpay, \ 65 const struct isakmp_gen *ext, \ 66 u_int item_len, \ 67 const u_char *end_pointer, \ 68 u_int32_t phase,\ 69 u_int32_t doi0, \ 70 u_int32_t proto0, int depth) 71 72DECLARE_PRINTER(v1_sa); 73DECLARE_PRINTER(v1_p); 74DECLARE_PRINTER(v1_t); 75DECLARE_PRINTER(v1_ke); 76DECLARE_PRINTER(v1_id); 77DECLARE_PRINTER(v1_cert); 78DECLARE_PRINTER(v1_cr); 79DECLARE_PRINTER(v1_sig); 80DECLARE_PRINTER(v1_hash); 81DECLARE_PRINTER(v1_nonce); 82DECLARE_PRINTER(v1_n); 83DECLARE_PRINTER(v1_d); 84DECLARE_PRINTER(v1_vid); 85 86DECLARE_PRINTER(v2_sa); 87DECLARE_PRINTER(v2_ke); 88DECLARE_PRINTER(v2_ID); 89DECLARE_PRINTER(v2_cert); 90DECLARE_PRINTER(v2_cr); 91DECLARE_PRINTER(v2_auth); 92DECLARE_PRINTER(v2_nonce); 93DECLARE_PRINTER(v2_n); 94DECLARE_PRINTER(v2_d); 95DECLARE_PRINTER(v2_vid); 96DECLARE_PRINTER(v2_TS); 97DECLARE_PRINTER(v2_cp); 98DECLARE_PRINTER(v2_eap); 99 100static const u_char *ikev2_e_print(netdissect_options *ndo, 101 struct isakmp *base, 102 u_char tpay, 103 const struct isakmp_gen *ext, 104 u_int item_len, 105 const u_char *end_pointer, 106 u_int32_t phase, 107 u_int32_t doi0, 108 u_int32_t proto0, int depth); 109 110 111static const u_char *ike_sub0_print(netdissect_options *ndo,u_char, const struct isakmp_gen *, 112 const u_char *, u_int32_t, u_int32_t, u_int32_t, int); 113static const u_char *ikev1_sub_print(netdissect_options *ndo,u_char, const struct isakmp_gen *, 114 const u_char *, u_int32_t, u_int32_t, u_int32_t, int); 115 116static const u_char *ikev2_sub_print(netdissect_options *ndo, 117 struct isakmp *base, 118 u_char np, const struct isakmp_gen *ext, 119 const u_char *ep, u_int32_t phase, 120 u_int32_t doi, u_int32_t proto, 121 int depth); 122 123 124static char *numstr(int); 125static void safememcpy(void *, const void *, size_t); 126 127static void 128ikev1_print(netdissect_options *ndo, 129 const u_char *bp, u_int length, 130 const u_char *bp2, struct isakmp *base); 131 132#define MAXINITIATORS 20 133int ninitiator = 0; 134struct { 135 cookie_t initiator; 136 struct sockaddr_storage iaddr; 137 struct sockaddr_storage raddr; 138} cookiecache[MAXINITIATORS]; 139 140/* protocol id */ 141static const char *protoidstr[] = { 142 NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp", 143}; 144 145/* isakmp->np */ 146static const char *npstr[] = { 147 "none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash", /* 0 - 8 */ 148 "sig", "nonce", "n", "d", "vid", /* 9 - 13 */ 149 "pay14", "pay15", "pay16", "pay17", "pay18", /* 14- 18 */ 150 "pay19", "pay20", "pay21", "pay22", "pay23", /* 19- 23 */ 151 "pay24", "pay25", "pay26", "pay27", "pay28", /* 24- 28 */ 152 "pay29", "pay30", "pay31", "pay32", /* 29- 32 */ 153 "v2sa", "v2ke", "v2IDi", "v2IDr", "v2cert",/* 33- 37 */ 154 "v2cr", "v2auth","v2nonce", "v2n", "v2d", /* 38- 42 */ 155 "v2vid", "v2TSi", "v2TSr", "v2e", "v2cp", /* 43- 47 */ 156 "v2eap", /* 48 */ 157 158}; 159 160/* isakmp->np */ 161static const u_char *(*npfunc[])(netdissect_options *ndo, u_char tpay, 162 const struct isakmp_gen *ext, 163 u_int item_len, 164 const u_char *end_pointer, 165 u_int32_t phase, 166 u_int32_t doi0, 167 u_int32_t proto0, int depth) = { 168 NULL, 169 ikev1_sa_print, 170 ikev1_p_print, 171 ikev1_t_print, 172 ikev1_ke_print, 173 ikev1_id_print, 174 ikev1_cert_print, 175 ikev1_cr_print, 176 ikev1_hash_print, 177 ikev1_sig_print, 178 ikev1_nonce_print, 179 ikev1_n_print, 180 ikev1_d_print, 181 ikev1_vid_print, /* 13 */ 182 NULL, NULL, NULL, NULL, NULL, /* 14- 18 */ 183 NULL, NULL, NULL, NULL, NULL, /* 19- 23 */ 184 NULL, NULL, NULL, NULL, NULL, /* 24- 28 */ 185 NULL, NULL, NULL, NULL, /* 29- 32 */ 186 ikev2_sa_print, /* 33 */ 187 ikev2_ke_print, /* 34 */ 188 ikev2_ID_print, /* 35 */ 189 ikev2_ID_print, /* 36 */ 190 ikev2_cert_print, /* 37 */ 191 ikev2_cr_print, /* 38 */ 192 ikev2_auth_print, /* 39 */ 193 ikev2_nonce_print, /* 40 */ 194 ikev2_n_print, /* 41 */ 195 ikev2_d_print, /* 42 */ 196 ikev2_vid_print, /* 43 */ 197 ikev2_TS_print, /* 44 */ 198 ikev2_TS_print, /* 45 */ 199 NULL, /* ikev2_e_print,*/ /* 46 - special */ 200 ikev2_cp_print, /* 47 */ 201 ikev2_eap_print, /* 48 */ 202}; 203 204/* isakmp->etype */ 205static const char *etypestr[] = { 206/* IKEv1 exchange types */ 207 "none", "base", "ident", "auth", "agg", "inf", NULL, NULL, /* 0-7 */ 208 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 8-15 */ 209 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 16-23 */ 210 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 24-31 */ 211 "oakley-quick", "oakley-newgroup", /* 32-33 */ 212/* IKEv2 exchange types */ 213 "ikev2_init", "ikev2_auth", "child_sa", "inf2" /* 34-37 */ 214}; 215 216#define STR_OR_ID(x, tab) \ 217 (((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x)) 218#define PROTOIDSTR(x) STR_OR_ID(x, protoidstr) 219#define NPSTR(x) STR_OR_ID(x, npstr) 220#define ETYPESTR(x) STR_OR_ID(x, etypestr) 221 222#define CHECKLEN(p, np) \ 223 if (ep < (u_char *)(p)) { \ 224 ND_PRINT((ndo," [|%s]", NPSTR(np))); \ 225 goto done; \ 226 } 227 228 229#define NPFUNC(x) \ 230 (((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \ 231 ? npfunc[(x)] : NULL) 232 233static int 234iszero(u_char *p, size_t l) 235{ 236 while (l--) { 237 if (*p++) 238 return 0; 239 } 240 return 1; 241} 242 243/* find cookie from initiator cache */ 244static int 245cookie_find(cookie_t *in) 246{ 247 int i; 248 249 for (i = 0; i < MAXINITIATORS; i++) { 250 if (memcmp(in, &cookiecache[i].initiator, sizeof(*in)) == 0) 251 return i; 252 } 253 254 return -1; 255} 256 257/* record initiator */ 258static void 259cookie_record(cookie_t *in, const u_char *bp2) 260{ 261 int i; 262 struct ip *ip; 263 struct sockaddr_in *sin; 264#ifdef INET6 265 struct ip6_hdr *ip6; 266 struct sockaddr_in6 *sin6; 267#endif 268 269 i = cookie_find(in); 270 if (0 <= i) { 271 ninitiator = (i + 1) % MAXINITIATORS; 272 return; 273 } 274 275 ip = (struct ip *)bp2; 276 switch (IP_V(ip)) { 277 case 4: 278 memset(&cookiecache[ninitiator].iaddr, 0, 279 sizeof(cookiecache[ninitiator].iaddr)); 280 memset(&cookiecache[ninitiator].raddr, 0, 281 sizeof(cookiecache[ninitiator].raddr)); 282 283 sin = (struct sockaddr_in *)&cookiecache[ninitiator].iaddr; 284#ifdef HAVE_SOCKADDR_SA_LEN 285 sin->sin_len = sizeof(struct sockaddr_in); 286#endif 287 sin->sin_family = AF_INET; 288 memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src)); 289 sin = (struct sockaddr_in *)&cookiecache[ninitiator].raddr; 290#ifdef HAVE_SOCKADDR_SA_LEN 291 sin->sin_len = sizeof(struct sockaddr_in); 292#endif 293 sin->sin_family = AF_INET; 294 memcpy(&sin->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst)); 295 break; 296#ifdef INET6 297 case 6: 298 memset(&cookiecache[ninitiator].iaddr, 0, 299 sizeof(cookiecache[ninitiator].iaddr)); 300 memset(&cookiecache[ninitiator].raddr, 0, 301 sizeof(cookiecache[ninitiator].raddr)); 302 303 ip6 = (struct ip6_hdr *)bp2; 304 sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].iaddr; 305#ifdef HAVE_SOCKADDR_SA_LEN 306 sin6->sin6_len = sizeof(struct sockaddr_in6); 307#endif 308 sin6->sin6_family = AF_INET6; 309 memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src)); 310 sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].raddr; 311#ifdef HAVE_SOCKADDR_SA_LEN 312 sin6->sin6_len = sizeof(struct sockaddr_in6); 313#endif 314 sin6->sin6_family = AF_INET6; 315 memcpy(&sin6->sin6_addr, &ip6->ip6_dst, sizeof(ip6->ip6_dst)); 316 break; 317#endif 318 default: 319 return; 320 } 321 memcpy(&cookiecache[ninitiator].initiator, in, sizeof(*in)); 322 ninitiator = (ninitiator + 1) % MAXINITIATORS; 323} 324 325#define cookie_isinitiator(x, y) cookie_sidecheck((x), (y), 1) 326#define cookie_isresponder(x, y) cookie_sidecheck((x), (y), 0) 327static int 328cookie_sidecheck(int i, const u_char *bp2, int initiator) 329{ 330 struct sockaddr_storage ss; 331 struct sockaddr *sa; 332 struct ip *ip; 333 struct sockaddr_in *sin; 334#ifdef INET6 335 struct ip6_hdr *ip6; 336 struct sockaddr_in6 *sin6; 337#endif 338 int salen; 339 340 memset(&ss, 0, sizeof(ss)); 341 ip = (struct ip *)bp2; 342 switch (IP_V(ip)) { 343 case 4: 344 sin = (struct sockaddr_in *)&ss; 345#ifdef HAVE_SOCKADDR_SA_LEN 346 sin->sin_len = sizeof(struct sockaddr_in); 347#endif 348 sin->sin_family = AF_INET; 349 memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src)); 350 break; 351#ifdef INET6 352 case 6: 353 ip6 = (struct ip6_hdr *)bp2; 354 sin6 = (struct sockaddr_in6 *)&ss; 355#ifdef HAVE_SOCKADDR_SA_LEN 356 sin6->sin6_len = sizeof(struct sockaddr_in6); 357#endif 358 sin6->sin6_family = AF_INET6; 359 memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src)); 360 break; 361#endif 362 default: 363 return 0; 364 } 365 366 sa = (struct sockaddr *)&ss; 367 if (initiator) { 368 if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].iaddr)->sa_family) 369 return 0; 370#ifdef HAVE_SOCKADDR_SA_LEN 371 salen = sa->sa_len; 372#else 373#ifdef INET6 374 if (sa->sa_family == AF_INET6) 375 salen = sizeof(struct sockaddr_in6); 376 else 377 salen = sizeof(struct sockaddr); 378#else 379 salen = sizeof(struct sockaddr); 380#endif 381#endif 382 if (memcmp(&ss, &cookiecache[i].iaddr, salen) == 0) 383 return 1; 384 } else { 385 if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].raddr)->sa_family) 386 return 0; 387#ifdef HAVE_SOCKADDR_SA_LEN 388 salen = sa->sa_len; 389#else 390#ifdef INET6 391 if (sa->sa_family == AF_INET6) 392 salen = sizeof(struct sockaddr_in6); 393 else 394 salen = sizeof(struct sockaddr); 395#else 396 salen = sizeof(struct sockaddr); 397#endif 398#endif 399 if (memcmp(&ss, &cookiecache[i].raddr, salen) == 0) 400 return 1; 401 } 402 return 0; 403} 404 405static void 406hexprint(netdissect_options *ndo, caddr_t loc, size_t len) 407{ 408 u_char *p; 409 size_t i; 410 411 p = (u_char *)loc; 412 for (i = 0; i < len; i++) 413 ND_PRINT((ndo,"%02x", p[i] & 0xff)); 414} 415 416static int 417rawprint(netdissect_options *ndo, caddr_t loc, size_t len) 418{ 419 ND_TCHECK2(*loc, len); 420 421 hexprint(ndo, loc, len); 422 return 1; 423trunc: 424 return 0; 425} 426 427 428/* 429 * returns false if we run out of data buffer 430 */ 431static int ike_show_somedata(struct netdissect_options *ndo, 432 const u_char *cp, const u_char *ep) 433{ 434 /* there is too much data, just show some of it */ 435 const u_char *end = ep - 20; 436 int elen = 20; 437 int len = ep - cp; 438 if(len > 10) { 439 len = 10; 440 } 441 442 /* really shouldn't happen because of above */ 443 if(end < cp + len) { 444 end = cp+len; 445 elen = ep - end; 446 } 447 448 ND_PRINT((ndo," data=(")); 449 if(!rawprint(ndo, (caddr_t)(cp), len)) goto trunc; 450 ND_PRINT((ndo, "...")); 451 if(elen) { 452 if(!rawprint(ndo, (caddr_t)(end), elen)) goto trunc; 453 } 454 ND_PRINT((ndo,")")); 455 return 1; 456 457trunc: 458 return 0; 459} 460 461struct attrmap { 462 const char *type; 463 u_int nvalue; 464 const char *value[30]; /*XXX*/ 465}; 466 467static const u_char * 468ikev1_attrmap_print(netdissect_options *ndo, 469 const u_char *p, const u_char *ep, 470 const struct attrmap *map, size_t nmap) 471{ 472 u_int16_t *q; 473 int totlen; 474 u_int32_t t, v; 475 476 q = (u_int16_t *)p; 477 if (p[0] & 0x80) 478 totlen = 4; 479 else 480 totlen = 4 + EXTRACT_16BITS(&q[1]); 481 if (ep < p + totlen) { 482 ND_PRINT((ndo,"[|attr]")); 483 return ep + 1; 484 } 485 486 ND_PRINT((ndo,"(")); 487 t = EXTRACT_16BITS(&q[0]) & 0x7fff; 488 if (map && t < nmap && map[t].type) 489 ND_PRINT((ndo,"type=%s ", map[t].type)); 490 else 491 ND_PRINT((ndo,"type=#%d ", t)); 492 if (p[0] & 0x80) { 493 ND_PRINT((ndo,"value=")); 494 v = EXTRACT_16BITS(&q[1]); 495 if (map && t < nmap && v < map[t].nvalue && map[t].value[v]) 496 ND_PRINT((ndo,"%s", map[t].value[v])); 497 else 498 rawprint(ndo, (caddr_t)&q[1], 2); 499 } else { 500 ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1]))); 501 rawprint(ndo, (caddr_t)&p[4], EXTRACT_16BITS(&q[1])); 502 } 503 ND_PRINT((ndo,")")); 504 return p + totlen; 505} 506 507static const u_char * 508ikev1_attr_print(netdissect_options *ndo, const u_char *p, const u_char *ep) 509{ 510 u_int16_t *q; 511 int totlen; 512 u_int32_t t; 513 514 q = (u_int16_t *)p; 515 if (p[0] & 0x80) 516 totlen = 4; 517 else 518 totlen = 4 + EXTRACT_16BITS(&q[1]); 519 if (ep < p + totlen) { 520 ND_PRINT((ndo,"[|attr]")); 521 return ep + 1; 522 } 523 524 ND_PRINT((ndo,"(")); 525 t = EXTRACT_16BITS(&q[0]) & 0x7fff; 526 ND_PRINT((ndo,"type=#%d ", t)); 527 if (p[0] & 0x80) { 528 ND_PRINT((ndo,"value=")); 529 t = q[1]; 530 rawprint(ndo, (caddr_t)&q[1], 2); 531 } else { 532 ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1]))); 533 rawprint(ndo, (caddr_t)&p[2], EXTRACT_16BITS(&q[1])); 534 } 535 ND_PRINT((ndo,")")); 536 return p + totlen; 537} 538 539static const u_char * 540ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_, 541 const struct isakmp_gen *ext, 542 u_int item_len _U_, 543 const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_, 544 u_int32_t proto0, int depth) 545{ 546 const struct ikev1_pl_sa *p; 547 struct ikev1_pl_sa sa; 548 const u_int32_t *q; 549 u_int32_t doi, sit, ident; 550 const u_char *cp, *np; 551 int t; 552 553 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_SA))); 554 555 p = (struct ikev1_pl_sa *)ext; 556 ND_TCHECK(*p); 557 safememcpy(&sa, ext, sizeof(sa)); 558 doi = ntohl(sa.doi); 559 sit = ntohl(sa.sit); 560 if (doi != 1) { 561 ND_PRINT((ndo," doi=%d", doi)); 562 ND_PRINT((ndo," situation=%u", (u_int32_t)ntohl(sa.sit))); 563 return (u_char *)(p + 1); 564 } 565 566 ND_PRINT((ndo," doi=ipsec")); 567 q = (u_int32_t *)&sa.sit; 568 ND_PRINT((ndo," situation=")); 569 t = 0; 570 if (sit & 0x01) { 571 ND_PRINT((ndo,"identity")); 572 t++; 573 } 574 if (sit & 0x02) { 575 ND_PRINT((ndo,"%ssecrecy", t ? "+" : "")); 576 t++; 577 } 578 if (sit & 0x04) 579 ND_PRINT((ndo,"%sintegrity", t ? "+" : "")); 580 581 np = (u_char *)ext + sizeof(sa); 582 if (sit != 0x01) { 583 ND_TCHECK2(*(ext + 1), sizeof(ident)); 584 safememcpy(&ident, ext + 1, sizeof(ident)); 585 ND_PRINT((ndo," ident=%u", (u_int32_t)ntohl(ident))); 586 np += sizeof(ident); 587 } 588 589 ext = (struct isakmp_gen *)np; 590 ND_TCHECK(*ext); 591 592 cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0, 593 depth); 594 595 return cp; 596trunc: 597 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_SA))); 598 return NULL; 599} 600 601static const u_char * 602ikev1_p_print(netdissect_options *ndo, u_char tpay _U_, 603 const struct isakmp_gen *ext, u_int item_len _U_, 604 const u_char *ep, u_int32_t phase, u_int32_t doi0, 605 u_int32_t proto0 _U_, int depth) 606{ 607 const struct ikev1_pl_p *p; 608 struct ikev1_pl_p prop; 609 const u_char *cp; 610 611 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_P))); 612 613 p = (struct ikev1_pl_p *)ext; 614 ND_TCHECK(*p); 615 safememcpy(&prop, ext, sizeof(prop)); 616 ND_PRINT((ndo," #%d protoid=%s transform=%d", 617 prop.p_no, PROTOIDSTR(prop.prot_id), prop.num_t)); 618 if (prop.spi_size) { 619 ND_PRINT((ndo," spi=")); 620 if (!rawprint(ndo, (caddr_t)(p + 1), prop.spi_size)) 621 goto trunc; 622 } 623 624 ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size); 625 ND_TCHECK(*ext); 626 627 cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_T, ext, ep, phase, doi0, 628 prop.prot_id, depth); 629 630 return cp; 631trunc: 632 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_P))); 633 return NULL; 634} 635 636static const char *ikev1_p_map[] = { 637 NULL, "ike", 638}; 639 640static const char *ikev2_t_type_map[]={ 641 NULL, "encr", "prf", "integ", "dh", "esn" 642}; 643 644static const char *ah_p_map[] = { 645 NULL, "(reserved)", "md5", "sha", "1des", 646 "sha2-256", "sha2-384", "sha2-512", 647}; 648 649static const char *prf_p_map[] = { 650 NULL, "hmac-md5", "hmac-sha", "hmac-tiger", 651 "aes128_xcbc" 652}; 653 654static const char *integ_p_map[] = { 655 NULL, "hmac-md5", "hmac-sha", "dec-mac", 656 "kpdk-md5", "aes-xcbc" 657}; 658 659static const char *esn_p_map[] = { 660 "no-esn", "esn" 661}; 662 663static const char *dh_p_map[] = { 664 NULL, "modp768", 665 "modp1024", /* group 2 */ 666 "EC2N 2^155", /* group 3 */ 667 "EC2N 2^185", /* group 4 */ 668 "modp1536", /* group 5 */ 669 "iana-grp06", "iana-grp07", /* reserved */ 670 "iana-grp08", "iana-grp09", 671 "iana-grp10", "iana-grp11", 672 "iana-grp12", "iana-grp13", 673 "modp2048", /* group 14 */ 674 "modp3072", /* group 15 */ 675 "modp4096", /* group 16 */ 676 "modp6144", /* group 17 */ 677 "modp8192", /* group 18 */ 678}; 679 680static const char *esp_p_map[] = { 681 NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast", 682 "blowfish", "3idea", "1des-iv32", "rc4", "null", "aes" 683}; 684 685static const char *ipcomp_p_map[] = { 686 NULL, "oui", "deflate", "lzs", 687}; 688 689const struct attrmap ipsec_t_map[] = { 690 { NULL, 0, { NULL } }, 691 { "lifetype", 3, { NULL, "sec", "kb", }, }, 692 { "life", 0, { NULL } }, 693 { "group desc", 18, { NULL, "modp768", 694 "modp1024", /* group 2 */ 695 "EC2N 2^155", /* group 3 */ 696 "EC2N 2^185", /* group 4 */ 697 "modp1536", /* group 5 */ 698 "iana-grp06", "iana-grp07", /* reserved */ 699 "iana-grp08", "iana-grp09", 700 "iana-grp10", "iana-grp11", 701 "iana-grp12", "iana-grp13", 702 "modp2048", /* group 14 */ 703 "modp3072", /* group 15 */ 704 "modp4096", /* group 16 */ 705 "modp6144", /* group 17 */ 706 "modp8192", /* group 18 */ 707 }, }, 708 { "enc mode", 3, { NULL, "tunnel", "transport", }, }, 709 { "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, }, 710 { "keylen", 0, { NULL } }, 711 { "rounds", 0, { NULL } }, 712 { "dictsize", 0, { NULL } }, 713 { "privalg", 0, { NULL } }, 714}; 715 716const struct attrmap encr_t_map[] = { 717 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 0, 1 */ 718 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 2, 3 */ 719 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 4, 5 */ 720 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 6, 7 */ 721 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 8, 9 */ 722 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 10,11*/ 723 { NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 12,13*/ 724 { "keylen", 14, { NULL }}, 725}; 726 727const struct attrmap oakley_t_map[] = { 728 { NULL, 0, { NULL } }, 729 { "enc", 8, { NULL, "1des", "idea", "blowfish", "rc5", 730 "3des", "cast", "aes", }, }, 731 { "hash", 7, { NULL, "md5", "sha1", "tiger", 732 "sha2-256", "sha2-384", "sha2-512", }, }, 733 { "auth", 6, { NULL, "preshared", "dss", "rsa sig", "rsa enc", 734 "rsa enc revised", }, }, 735 { "group desc", 18, { NULL, "modp768", 736 "modp1024", /* group 2 */ 737 "EC2N 2^155", /* group 3 */ 738 "EC2N 2^185", /* group 4 */ 739 "modp1536", /* group 5 */ 740 "iana-grp06", "iana-grp07", /* reserved */ 741 "iana-grp08", "iana-grp09", 742 "iana-grp10", "iana-grp11", 743 "iana-grp12", "iana-grp13", 744 "modp2048", /* group 14 */ 745 "modp3072", /* group 15 */ 746 "modp4096", /* group 16 */ 747 "modp6144", /* group 17 */ 748 "modp8192", /* group 18 */ 749 }, }, 750 { "group type", 4, { NULL, "MODP", "ECP", "EC2N", }, }, 751 { "group prime", 0, { NULL } }, 752 { "group gen1", 0, { NULL } }, 753 { "group gen2", 0, { NULL } }, 754 { "group curve A", 0, { NULL } }, 755 { "group curve B", 0, { NULL } }, 756 { "lifetype", 3, { NULL, "sec", "kb", }, }, 757 { "lifeduration", 0, { NULL } }, 758 { "prf", 0, { NULL } }, 759 { "keylen", 0, { NULL } }, 760 { "field", 0, { NULL } }, 761 { "order", 0, { NULL } }, 762}; 763 764static const u_char * 765ikev1_t_print(netdissect_options *ndo, u_char tpay _U_, 766 const struct isakmp_gen *ext, u_int item_len, 767 const u_char *ep, u_int32_t phase _U_, u_int32_t doi _U_, 768 u_int32_t proto, int depth _U_) 769{ 770 const struct ikev1_pl_t *p; 771 struct ikev1_pl_t t; 772 const u_char *cp; 773 const char *idstr; 774 const struct attrmap *map; 775 size_t nmap; 776 const u_char *ep2; 777 778 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_T))); 779 780 p = (struct ikev1_pl_t *)ext; 781 ND_TCHECK(*p); 782 safememcpy(&t, ext, sizeof(t)); 783 784 switch (proto) { 785 case 1: 786 idstr = STR_OR_ID(t.t_id, ikev1_p_map); 787 map = oakley_t_map; 788 nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]); 789 break; 790 case 2: 791 idstr = STR_OR_ID(t.t_id, ah_p_map); 792 map = ipsec_t_map; 793 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]); 794 break; 795 case 3: 796 idstr = STR_OR_ID(t.t_id, esp_p_map); 797 map = ipsec_t_map; 798 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]); 799 break; 800 case 4: 801 idstr = STR_OR_ID(t.t_id, ipcomp_p_map); 802 map = ipsec_t_map; 803 nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]); 804 break; 805 default: 806 idstr = NULL; 807 map = NULL; 808 nmap = 0; 809 break; 810 } 811 812 if (idstr) 813 ND_PRINT((ndo," #%d id=%s ", t.t_no, idstr)); 814 else 815 ND_PRINT((ndo," #%d id=%d ", t.t_no, t.t_id)); 816 cp = (u_char *)(p + 1); 817 ep2 = (u_char *)p + item_len; 818 while (cp < ep && cp < ep2) { 819 if (map && nmap) { 820 cp = ikev1_attrmap_print(ndo, cp, (ep < ep2) ? ep : ep2, 821 map, nmap); 822 } else 823 cp = ikev1_attr_print(ndo, cp, (ep < ep2) ? ep : ep2); 824 } 825 if (ep < ep2) 826 ND_PRINT((ndo,"...")); 827 return cp; 828trunc: 829 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_T))); 830 return NULL; 831} 832 833static const u_char * 834ikev1_ke_print(netdissect_options *ndo, u_char tpay _U_, 835 const struct isakmp_gen *ext, u_int item_len _U_, 836 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, 837 u_int32_t proto _U_, int depth _U_) 838{ 839 struct isakmp_gen e; 840 841 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_KE))); 842 843 ND_TCHECK(*ext); 844 safememcpy(&e, ext, sizeof(e)); 845 ND_PRINT((ndo," key len=%d", ntohs(e.len) - 4)); 846 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 847 ND_PRINT((ndo," ")); 848 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 849 goto trunc; 850 } 851 return (u_char *)ext + ntohs(e.len); 852trunc: 853 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_KE))); 854 return NULL; 855} 856 857static const u_char * 858ikev1_id_print(netdissect_options *ndo, u_char tpay _U_, 859 const struct isakmp_gen *ext, u_int item_len _U_, 860 const u_char *ep _U_, u_int32_t phase, u_int32_t doi _U_, 861 u_int32_t proto _U_, int depth _U_) 862{ 863#define USE_IPSECDOI_IN_PHASE1 1 864 const struct ikev1_pl_id *p; 865 struct ikev1_pl_id id; 866 static const char *idtypestr[] = { 867 "IPv4", "IPv4net", "IPv6", "IPv6net", 868 }; 869 static const char *ipsecidtypestr[] = { 870 NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6", 871 "IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN", 872 "keyid", 873 }; 874 int len; 875 const u_char *data; 876 877 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_ID))); 878 879 p = (struct ikev1_pl_id *)ext; 880 ND_TCHECK(*p); 881 safememcpy(&id, ext, sizeof(id)); 882 if (sizeof(*p) < item_len) { 883 data = (u_char *)(p + 1); 884 len = item_len - sizeof(*p); 885 } else { 886 data = NULL; 887 len = 0; 888 } 889 890#if 0 /*debug*/ 891 ND_PRINT((ndo," [phase=%d doi=%d proto=%d]", phase, doi, proto)); 892#endif 893 switch (phase) { 894#ifndef USE_IPSECDOI_IN_PHASE1 895 case 1: 896#endif 897 default: 898 ND_PRINT((ndo," idtype=%s", STR_OR_ID(id.d.id_type, idtypestr))); 899 ND_PRINT((ndo," doi_data=%u", 900 (u_int32_t)(ntohl(id.d.doi_data) & 0xffffff))); 901 break; 902 903#ifdef USE_IPSECDOI_IN_PHASE1 904 case 1: 905#endif 906 case 2: 907 { 908 const struct ipsecdoi_id *p; 909 struct ipsecdoi_id id; 910 struct protoent *pe; 911 912 p = (struct ipsecdoi_id *)ext; 913 ND_TCHECK(*p); 914 safememcpy(&id, ext, sizeof(id)); 915 ND_PRINT((ndo," idtype=%s", STR_OR_ID(id.type, ipsecidtypestr))); 916 if (id.proto_id) { 917#ifndef WIN32 918 setprotoent(1); 919#endif /* WIN32 */ 920 pe = getprotobynumber(id.proto_id); 921 if (pe) 922 ND_PRINT((ndo," protoid=%s", pe->p_name)); 923#ifndef WIN32 924 endprotoent(); 925#endif /* WIN32 */ 926 } else { 927 /* it DOES NOT mean IPPROTO_IP! */ 928 ND_PRINT((ndo," protoid=%s", "0")); 929 } 930 ND_PRINT((ndo," port=%d", ntohs(id.port))); 931 if (!len) 932 break; 933 if (data == NULL) 934 goto trunc; 935 ND_TCHECK2(*data, len); 936 switch (id.type) { 937 case IPSECDOI_ID_IPV4_ADDR: 938 if (len < 4) 939 ND_PRINT((ndo," len=%d [bad: < 4]", len)); 940 else 941 ND_PRINT((ndo," len=%d %s", len, ipaddr_string(data))); 942 len = 0; 943 break; 944 case IPSECDOI_ID_FQDN: 945 case IPSECDOI_ID_USER_FQDN: 946 { 947 int i; 948 ND_PRINT((ndo," len=%d ", len)); 949 for (i = 0; i < len; i++) 950 safeputchar(data[i]); 951 len = 0; 952 break; 953 } 954 case IPSECDOI_ID_IPV4_ADDR_SUBNET: 955 { 956 const u_char *mask; 957 if (len < 8) 958 ND_PRINT((ndo," len=%d [bad: < 8]", len)); 959 else { 960 mask = data + sizeof(struct in_addr); 961 ND_PRINT((ndo," len=%d %s/%u.%u.%u.%u", len, 962 ipaddr_string(data), 963 mask[0], mask[1], mask[2], mask[3])); 964 } 965 len = 0; 966 break; 967 } 968#ifdef INET6 969 case IPSECDOI_ID_IPV6_ADDR: 970 if (len < 16) 971 ND_PRINT((ndo," len=%d [bad: < 16]", len)); 972 else 973 ND_PRINT((ndo," len=%d %s", len, ip6addr_string(data))); 974 len = 0; 975 break; 976 case IPSECDOI_ID_IPV6_ADDR_SUBNET: 977 { 978 const u_int32_t *mask; 979 if (len < 20) 980 ND_PRINT((ndo," len=%d [bad: < 20]", len)); 981 else { 982 mask = (u_int32_t *)(data + sizeof(struct in6_addr)); 983 /*XXX*/ 984 ND_PRINT((ndo," len=%d %s/0x%08x%08x%08x%08x", len, 985 ip6addr_string(data), 986 mask[0], mask[1], mask[2], mask[3])); 987 } 988 len = 0; 989 break; 990 } 991#endif /*INET6*/ 992 case IPSECDOI_ID_IPV4_ADDR_RANGE: 993 if (len < 8) 994 ND_PRINT((ndo," len=%d [bad: < 8]", len)); 995 else { 996 ND_PRINT((ndo," len=%d %s-%s", len, 997 ipaddr_string(data), 998 ipaddr_string(data + sizeof(struct in_addr)))); 999 } 1000 len = 0; 1001 break; 1002#ifdef INET6 1003 case IPSECDOI_ID_IPV6_ADDR_RANGE: 1004 if (len < 32) 1005 ND_PRINT((ndo," len=%d [bad: < 32]", len)); 1006 else { 1007 ND_PRINT((ndo," len=%d %s-%s", len, 1008 ip6addr_string(data), 1009 ip6addr_string(data + sizeof(struct in6_addr)))); 1010 } 1011 len = 0; 1012 break; 1013#endif /*INET6*/ 1014 case IPSECDOI_ID_DER_ASN1_DN: 1015 case IPSECDOI_ID_DER_ASN1_GN: 1016 case IPSECDOI_ID_KEY_ID: 1017 break; 1018 } 1019 break; 1020 } 1021 } 1022 if (data && len) { 1023 ND_PRINT((ndo," len=%d", len)); 1024 if (2 < ndo->ndo_vflag) { 1025 ND_PRINT((ndo," ")); 1026 if (!rawprint(ndo, (caddr_t)data, len)) 1027 goto trunc; 1028 } 1029 } 1030 return (u_char *)ext + item_len; 1031trunc: 1032 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_ID))); 1033 return NULL; 1034} 1035 1036static const u_char * 1037ikev1_cert_print(netdissect_options *ndo, u_char tpay _U_, 1038 const struct isakmp_gen *ext, u_int item_len _U_, 1039 const u_char *ep _U_, u_int32_t phase _U_, 1040 u_int32_t doi0 _U_, 1041 u_int32_t proto0 _U_, int depth _U_) 1042{ 1043 const struct ikev1_pl_cert *p; 1044 struct ikev1_pl_cert cert; 1045 static const char *certstr[] = { 1046 "none", "pkcs7", "pgp", "dns", 1047 "x509sign", "x509ke", "kerberos", "crl", 1048 "arl", "spki", "x509attr", 1049 }; 1050 1051 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_CERT))); 1052 1053 p = (struct ikev1_pl_cert *)ext; 1054 ND_TCHECK(*p); 1055 safememcpy(&cert, ext, sizeof(cert)); 1056 ND_PRINT((ndo," len=%d", item_len - 4)); 1057 ND_PRINT((ndo," type=%s", STR_OR_ID((cert.encode), certstr))); 1058 if (2 < ndo->ndo_vflag && 4 < item_len) { 1059 ND_PRINT((ndo," ")); 1060 if (!rawprint(ndo, (caddr_t)(ext + 1), item_len - 4)) 1061 goto trunc; 1062 } 1063 return (u_char *)ext + item_len; 1064trunc: 1065 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_CERT))); 1066 return NULL; 1067} 1068 1069static const u_char * 1070ikev1_cr_print(netdissect_options *ndo, u_char tpay _U_, 1071 const struct isakmp_gen *ext, u_int item_len _U_, 1072 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_, 1073 u_int32_t proto0 _U_, int depth _U_) 1074{ 1075 const struct ikev1_pl_cert *p; 1076 struct ikev1_pl_cert cert; 1077 static const char *certstr[] = { 1078 "none", "pkcs7", "pgp", "dns", 1079 "x509sign", "x509ke", "kerberos", "crl", 1080 "arl", "spki", "x509attr", 1081 }; 1082 1083 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_CR))); 1084 1085 p = (struct ikev1_pl_cert *)ext; 1086 ND_TCHECK(*p); 1087 safememcpy(&cert, ext, sizeof(cert)); 1088 ND_PRINT((ndo," len=%d", item_len - 4)); 1089 ND_PRINT((ndo," type=%s", STR_OR_ID((cert.encode), certstr))); 1090 if (2 < ndo->ndo_vflag && 4 < item_len) { 1091 ND_PRINT((ndo," ")); 1092 if (!rawprint(ndo, (caddr_t)(ext + 1), item_len - 4)) 1093 goto trunc; 1094 } 1095 return (u_char *)ext + item_len; 1096trunc: 1097 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_CR))); 1098 return NULL; 1099} 1100 1101static const u_char * 1102ikev1_hash_print(netdissect_options *ndo, u_char tpay _U_, 1103 const struct isakmp_gen *ext, u_int item_len _U_, 1104 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, 1105 u_int32_t proto _U_, int depth _U_) 1106{ 1107 struct isakmp_gen e; 1108 1109 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_HASH))); 1110 1111 ND_TCHECK(*ext); 1112 safememcpy(&e, ext, sizeof(e)); 1113 ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); 1114 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1115 ND_PRINT((ndo," ")); 1116 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1117 goto trunc; 1118 } 1119 return (u_char *)ext + ntohs(e.len); 1120trunc: 1121 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_HASH))); 1122 return NULL; 1123} 1124 1125static const u_char * 1126ikev1_sig_print(netdissect_options *ndo, u_char tpay _U_, 1127 const struct isakmp_gen *ext, u_int item_len _U_, 1128 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_, 1129 u_int32_t proto _U_, int depth _U_) 1130{ 1131 struct isakmp_gen e; 1132 1133 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_SIG))); 1134 1135 ND_TCHECK(*ext); 1136 safememcpy(&e, ext, sizeof(e)); 1137 ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); 1138 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1139 ND_PRINT((ndo," ")); 1140 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1141 goto trunc; 1142 } 1143 return (u_char *)ext + ntohs(e.len); 1144trunc: 1145 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_SIG))); 1146 return NULL; 1147} 1148 1149static const u_char * 1150ikev1_nonce_print(netdissect_options *ndo, u_char tpay _U_, 1151 const struct isakmp_gen *ext, 1152 u_int item_len _U_, 1153 const u_char *ep _U_, 1154 u_int32_t phase _U_, u_int32_t doi _U_, 1155 u_int32_t proto _U_, int depth _U_) 1156{ 1157 struct isakmp_gen e; 1158 1159 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_NONCE))); 1160 1161 ND_TCHECK(*ext); 1162 safememcpy(&e, ext, sizeof(e)); 1163 ND_PRINT((ndo," n len=%d", ntohs(e.len) - 4)); 1164 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1165 ND_PRINT((ndo," ")); 1166 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1167 goto trunc; 1168 } else if (1 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1169 ND_PRINT((ndo," ")); 1170 if (!ike_show_somedata(ndo, (u_char *)(caddr_t)(ext + 1), ep)) 1171 goto trunc; 1172 } 1173 return (u_char *)ext + ntohs(e.len); 1174trunc: 1175 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_NONCE))); 1176 return NULL; 1177} 1178 1179static const u_char * 1180ikev1_n_print(netdissect_options *ndo, u_char tpay _U_, 1181 const struct isakmp_gen *ext, u_int item_len, 1182 const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_, 1183 u_int32_t proto0 _U_, int depth) 1184{ 1185 struct ikev1_pl_n *p, n; 1186 const u_char *cp; 1187 u_char *ep2; 1188 u_int32_t doi; 1189 u_int32_t proto; 1190 static const char *notify_error_str[] = { 1191 NULL, "INVALID-PAYLOAD-TYPE", 1192 "DOI-NOT-SUPPORTED", "SITUATION-NOT-SUPPORTED", 1193 "INVALID-COOKIE", "INVALID-MAJOR-VERSION", 1194 "INVALID-MINOR-VERSION", "INVALID-EXCHANGE-TYPE", 1195 "INVALID-FLAGS", "INVALID-MESSAGE-ID", 1196 "INVALID-PROTOCOL-ID", "INVALID-SPI", 1197 "INVALID-TRANSFORM-ID", "ATTRIBUTES-NOT-SUPPORTED", 1198 "NO-PROPOSAL-CHOSEN", "BAD-PROPOSAL-SYNTAX", 1199 "PAYLOAD-MALFORMED", "INVALID-KEY-INFORMATION", 1200 "INVALID-ID-INFORMATION", "INVALID-CERT-ENCODING", 1201 "INVALID-CERTIFICATE", "CERT-TYPE-UNSUPPORTED", 1202 "INVALID-CERT-AUTHORITY", "INVALID-HASH-INFORMATION", 1203 "AUTHENTICATION-FAILED", "INVALID-SIGNATURE", 1204 "ADDRESS-NOTIFICATION", "NOTIFY-SA-LIFETIME", 1205 "CERTIFICATE-UNAVAILABLE", "UNSUPPORTED-EXCHANGE-TYPE", 1206 "UNEQUAL-PAYLOAD-LENGTHS", 1207 }; 1208 static const char *ipsec_notify_error_str[] = { 1209 "RESERVED", 1210 }; 1211 static const char *notify_status_str[] = { 1212 "CONNECTED", 1213 }; 1214 static const char *ipsec_notify_status_str[] = { 1215 "RESPONDER-LIFETIME", "REPLAY-STATUS", 1216 "INITIAL-CONTACT", 1217 }; 1218/* NOTE: these macro must be called with x in proper range */ 1219 1220/* 0 - 8191 */ 1221#define NOTIFY_ERROR_STR(x) \ 1222 STR_OR_ID((x), notify_error_str) 1223 1224/* 8192 - 16383 */ 1225#define IPSEC_NOTIFY_ERROR_STR(x) \ 1226 STR_OR_ID((u_int)((x) - 8192), ipsec_notify_error_str) 1227 1228/* 16384 - 24575 */ 1229#define NOTIFY_STATUS_STR(x) \ 1230 STR_OR_ID((u_int)((x) - 16384), notify_status_str) 1231 1232/* 24576 - 32767 */ 1233#define IPSEC_NOTIFY_STATUS_STR(x) \ 1234 STR_OR_ID((u_int)((x) - 24576), ipsec_notify_status_str) 1235 1236 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_N))); 1237 1238 p = (struct ikev1_pl_n *)ext; 1239 ND_TCHECK(*p); 1240 safememcpy(&n, ext, sizeof(n)); 1241 doi = ntohl(n.doi); 1242 proto = n.prot_id; 1243 if (doi != 1) { 1244 ND_PRINT((ndo," doi=%d", doi)); 1245 ND_PRINT((ndo," proto=%d", proto)); 1246 if (ntohs(n.type) < 8192) 1247 ND_PRINT((ndo," type=%s", NOTIFY_ERROR_STR(ntohs(n.type)))); 1248 else if (ntohs(n.type) < 16384) 1249 ND_PRINT((ndo," type=%s", numstr(ntohs(n.type)))); 1250 else if (ntohs(n.type) < 24576) 1251 ND_PRINT((ndo," type=%s", NOTIFY_STATUS_STR(ntohs(n.type)))); 1252 else 1253 ND_PRINT((ndo," type=%s", numstr(ntohs(n.type)))); 1254 if (n.spi_size) { 1255 ND_PRINT((ndo," spi=")); 1256 if (!rawprint(ndo, (caddr_t)(p + 1), n.spi_size)) 1257 goto trunc; 1258 } 1259 return (u_char *)(p + 1) + n.spi_size; 1260 } 1261 1262 ND_PRINT((ndo," doi=ipsec")); 1263 ND_PRINT((ndo," proto=%s", PROTOIDSTR(proto))); 1264 if (ntohs(n.type) < 8192) 1265 ND_PRINT((ndo," type=%s", NOTIFY_ERROR_STR(ntohs(n.type)))); 1266 else if (ntohs(n.type) < 16384) 1267 ND_PRINT((ndo," type=%s", IPSEC_NOTIFY_ERROR_STR(ntohs(n.type)))); 1268 else if (ntohs(n.type) < 24576) 1269 ND_PRINT((ndo," type=%s", NOTIFY_STATUS_STR(ntohs(n.type)))); 1270 else if (ntohs(n.type) < 32768) 1271 ND_PRINT((ndo," type=%s", IPSEC_NOTIFY_STATUS_STR(ntohs(n.type)))); 1272 else 1273 ND_PRINT((ndo," type=%s", numstr(ntohs(n.type)))); 1274 if (n.spi_size) { 1275 ND_PRINT((ndo," spi=")); 1276 if (!rawprint(ndo, (caddr_t)(p + 1), n.spi_size)) 1277 goto trunc; 1278 } 1279 1280 cp = (u_char *)(p + 1) + n.spi_size; 1281 ep2 = (u_char *)p + item_len; 1282 1283 if (cp < ep) { 1284 ND_PRINT((ndo," orig=(")); 1285 switch (ntohs(n.type)) { 1286 case IPSECDOI_NTYPE_RESPONDER_LIFETIME: 1287 { 1288 const struct attrmap *map = oakley_t_map; 1289 size_t nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]); 1290 while (cp < ep && cp < ep2) { 1291 cp = ikev1_attrmap_print(ndo, cp, 1292 (ep < ep2) ? ep : ep2, map, nmap); 1293 } 1294 break; 1295 } 1296 case IPSECDOI_NTYPE_REPLAY_STATUS: 1297 ND_PRINT((ndo,"replay detection %sabled", 1298 (*(u_int32_t *)cp) ? "en" : "dis")); 1299 break; 1300 case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN: 1301 if (ikev1_sub_print(ndo, ISAKMP_NPTYPE_SA, 1302 (struct isakmp_gen *)cp, ep, phase, doi, proto, 1303 depth) == NULL) 1304 return NULL; 1305 break; 1306 default: 1307 /* NULL is dummy */ 1308 isakmp_print(ndo, cp, 1309 item_len - sizeof(*p) - n.spi_size, 1310 NULL); 1311 } 1312 ND_PRINT((ndo,")")); 1313 } 1314 return (u_char *)ext + item_len; 1315trunc: 1316 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_N))); 1317 return NULL; 1318} 1319 1320static const u_char * 1321ikev1_d_print(netdissect_options *ndo, u_char tpay _U_, 1322 const struct isakmp_gen *ext, u_int item_len _U_, 1323 const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi0 _U_, 1324 u_int32_t proto0 _U_, int depth _U_) 1325{ 1326 const struct ikev1_pl_d *p; 1327 struct ikev1_pl_d d; 1328 const u_int8_t *q; 1329 u_int32_t doi; 1330 u_int32_t proto; 1331 int i; 1332 1333 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_D))); 1334 1335 p = (struct ikev1_pl_d *)ext; 1336 ND_TCHECK(*p); 1337 safememcpy(&d, ext, sizeof(d)); 1338 doi = ntohl(d.doi); 1339 proto = d.prot_id; 1340 if (doi != 1) { 1341 ND_PRINT((ndo," doi=%u", doi)); 1342 ND_PRINT((ndo," proto=%u", proto)); 1343 } else { 1344 ND_PRINT((ndo," doi=ipsec")); 1345 ND_PRINT((ndo," proto=%s", PROTOIDSTR(proto))); 1346 } 1347 ND_PRINT((ndo," spilen=%u", d.spi_size)); 1348 ND_PRINT((ndo," nspi=%u", ntohs(d.num_spi))); 1349 ND_PRINT((ndo," spi=")); 1350 q = (u_int8_t *)(p + 1); 1351 for (i = 0; i < ntohs(d.num_spi); i++) { 1352 if (i != 0) 1353 ND_PRINT((ndo,",")); 1354 if (!rawprint(ndo, (caddr_t)q, d.spi_size)) 1355 goto trunc; 1356 q += d.spi_size; 1357 } 1358 return q; 1359trunc: 1360 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_D))); 1361 return NULL; 1362} 1363 1364static const u_char * 1365ikev1_vid_print(netdissect_options *ndo, u_char tpay _U_, 1366 const struct isakmp_gen *ext, 1367 u_int item_len _U_, const u_char *ep _U_, 1368 u_int32_t phase _U_, u_int32_t doi _U_, 1369 u_int32_t proto _U_, int depth _U_) 1370{ 1371 struct isakmp_gen e; 1372 1373 ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_VID))); 1374 1375 ND_TCHECK(*ext); 1376 safememcpy(&e, ext, sizeof(e)); 1377 ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); 1378 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1379 ND_PRINT((ndo," ")); 1380 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1381 goto trunc; 1382 } 1383 return (u_char *)ext + ntohs(e.len); 1384trunc: 1385 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_VID))); 1386 return NULL; 1387} 1388 1389/************************************************************/ 1390/* */ 1391/* IKE v2 - rfc4306 - dissector */ 1392/* */ 1393/************************************************************/ 1394 1395static void 1396ikev2_pay_print(netdissect_options *ndo, const char *payname, int critical) 1397{ 1398 ND_PRINT((ndo,"%s%s:", payname, critical&0x80 ? "[C]" : "")); 1399} 1400 1401static const u_char * 1402ikev2_gen_print(netdissect_options *ndo, u_char tpay, 1403 const struct isakmp_gen *ext) 1404{ 1405 struct isakmp_gen e; 1406 1407 ND_TCHECK(*ext); 1408 safememcpy(&e, ext, sizeof(e)); 1409 ikev2_pay_print(ndo, NPSTR(tpay), e.critical); 1410 1411 ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); 1412 if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1413 ND_PRINT((ndo," ")); 1414 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1415 goto trunc; 1416 } 1417 return (u_char *)ext + ntohs(e.len); 1418trunc: 1419 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1420 return NULL; 1421} 1422 1423static const u_char * 1424ikev2_t_print(netdissect_options *ndo, u_char tpay _U_, int pcount, 1425 const struct isakmp_gen *ext, u_int item_len, 1426 const u_char *ep, u_int32_t phase _U_, u_int32_t doi _U_, 1427 u_int32_t proto _U_, int depth _U_) 1428{ 1429 const struct ikev2_t *p; 1430 struct ikev2_t t; 1431 u_int16_t t_id; 1432 const u_char *cp; 1433 const char *idstr; 1434 const struct attrmap *map; 1435 size_t nmap; 1436 const u_char *ep2; 1437 1438 p = (struct ikev2_t *)ext; 1439 ND_TCHECK(*p); 1440 safememcpy(&t, ext, sizeof(t)); 1441 ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_T), t.h.critical); 1442 1443 t_id = ntohs(t.t_id); 1444 1445 map = NULL; 1446 nmap = 0; 1447 1448 switch (t.t_type) { 1449 case IV2_T_ENCR: 1450 idstr = STR_OR_ID(t_id, esp_p_map); 1451 map = encr_t_map; 1452 nmap = sizeof(encr_t_map)/sizeof(encr_t_map[0]); 1453 break; 1454 1455 case IV2_T_PRF: 1456 idstr = STR_OR_ID(t_id, prf_p_map); 1457 break; 1458 1459 case IV2_T_INTEG: 1460 idstr = STR_OR_ID(t_id, integ_p_map); 1461 break; 1462 1463 case IV2_T_DH: 1464 idstr = STR_OR_ID(t_id, dh_p_map); 1465 break; 1466 1467 case IV2_T_ESN: 1468 idstr = STR_OR_ID(t_id, esn_p_map); 1469 break; 1470 1471 default: 1472 idstr = NULL; 1473 break; 1474 } 1475 1476 if (idstr) 1477 ND_PRINT((ndo," #%u type=%s id=%s ", pcount, 1478 STR_OR_ID(t.t_type, ikev2_t_type_map), 1479 idstr)); 1480 else 1481 ND_PRINT((ndo," #%u type=%s id=%u ", pcount, 1482 STR_OR_ID(t.t_type, ikev2_t_type_map), 1483 t.t_id)); 1484 cp = (u_char *)(p + 1); 1485 ep2 = (u_char *)p + item_len; 1486 while (cp < ep && cp < ep2) { 1487 if (map && nmap) { 1488 cp = ikev1_attrmap_print(ndo, cp, (ep < ep2) ? ep : ep2, 1489 map, nmap); 1490 } else 1491 cp = ikev1_attr_print(ndo, cp, (ep < ep2) ? ep : ep2); 1492 } 1493 if (ep < ep2) 1494 ND_PRINT((ndo,"...")); 1495 return cp; 1496trunc: 1497 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_T))); 1498 return NULL; 1499} 1500 1501static const u_char * 1502ikev2_p_print(netdissect_options *ndo, u_char tpay _U_, int pcount _U_, 1503 const struct isakmp_gen *ext, u_int item_len _U_, 1504 const u_char *ep, u_int32_t phase, u_int32_t doi0, 1505 u_int32_t proto0 _U_, int depth) 1506{ 1507 const struct ikev2_p *p; 1508 struct ikev2_p prop; 1509 const u_char *cp; 1510 1511 p = (struct ikev2_p *)ext; 1512 ND_TCHECK(*p); 1513 safememcpy(&prop, ext, sizeof(prop)); 1514 ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_P), prop.h.critical); 1515 1516 ND_PRINT((ndo," #%u protoid=%s transform=%d len=%u", 1517 prop.p_no, PROTOIDSTR(prop.prot_id), 1518 prop.num_t, ntohs(prop.h.len))); 1519 if (prop.spi_size) { 1520 ND_PRINT((ndo," spi=")); 1521 if (!rawprint(ndo, (caddr_t)(p + 1), prop.spi_size)) 1522 goto trunc; 1523 } 1524 1525 ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size); 1526 ND_TCHECK(*ext); 1527 1528 cp = ikev2_sub_print(ndo, NULL, ISAKMP_NPTYPE_T, ext, ep, phase, doi0, 1529 prop.prot_id, depth); 1530 1531 return cp; 1532trunc: 1533 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_P))); 1534 return NULL; 1535} 1536 1537static const u_char * 1538ikev2_sa_print(netdissect_options *ndo, u_char tpay, 1539 const struct isakmp_gen *ext1, 1540 u_int item_len _U_, const u_char *ep _U_, 1541 u_int32_t phase _U_, u_int32_t doi _U_, 1542 u_int32_t proto _U_, int depth _U_) 1543{ 1544 struct isakmp_gen e; 1545 int osa_length, sa_length; 1546 1547 ND_TCHECK(*ext1); 1548 safememcpy(&e, ext1, sizeof(e)); 1549 ikev2_pay_print(ndo, "sa", e.critical); 1550 1551 osa_length= ntohs(e.len); 1552 sa_length = osa_length - 4; 1553 ND_PRINT((ndo," len=%d", sa_length)); 1554 1555 ikev2_sub_print(ndo, NULL, ISAKMP_NPTYPE_P, 1556 ext1+1, ep, 1557 0, 0, 0, depth); 1558 1559 return (u_char *)ext1 + osa_length; 1560trunc: 1561 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1562 return NULL; 1563} 1564 1565static const u_char * 1566ikev2_ke_print(netdissect_options *ndo, u_char tpay, 1567 const struct isakmp_gen *ext, 1568 u_int item_len _U_, const u_char *ep _U_, 1569 u_int32_t phase _U_, u_int32_t doi _U_, 1570 u_int32_t proto _U_, int depth _U_) 1571{ 1572 struct ikev2_ke ke; 1573 struct ikev2_ke *k; 1574 1575 k = (struct ikev2_ke *)ext; 1576 ND_TCHECK(*ext); 1577 safememcpy(&ke, ext, sizeof(ke)); 1578 ikev2_pay_print(ndo, NPSTR(tpay), ke.h.critical); 1579 1580 ND_PRINT((ndo," len=%u group=%s", ntohs(ke.h.len) - 8, 1581 STR_OR_ID(ntohs(ke.ke_group), dh_p_map))); 1582 1583 if (2 < ndo->ndo_vflag && 8 < ntohs(ke.h.len)) { 1584 ND_PRINT((ndo," ")); 1585 if (!rawprint(ndo, (caddr_t)(k + 1), ntohs(ke.h.len) - 8)) 1586 goto trunc; 1587 } 1588 return (u_char *)ext + ntohs(ke.h.len); 1589trunc: 1590 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1591 return NULL; 1592} 1593 1594static const u_char * 1595ikev2_ID_print(netdissect_options *ndo, u_char tpay, 1596 const struct isakmp_gen *ext, 1597 u_int item_len _U_, const u_char *ep _U_, 1598 u_int32_t phase _U_, u_int32_t doi _U_, 1599 u_int32_t proto _U_, int depth _U_) 1600{ 1601 struct ikev2_id id; 1602 int id_len, idtype_len, i; 1603 unsigned int dumpascii, dumphex; 1604 unsigned char *typedata; 1605 1606 ND_TCHECK(*ext); 1607 safememcpy(&id, ext, sizeof(id)); 1608 ikev2_pay_print(ndo, NPSTR(tpay), id.h.critical); 1609 1610 id_len = ntohs(id.h.len); 1611 1612 ND_PRINT((ndo," len=%d", id_len - 4)); 1613 if (2 < ndo->ndo_vflag && 4 < id_len) { 1614 ND_PRINT((ndo," ")); 1615 if (!rawprint(ndo, (caddr_t)(ext + 1), id_len - 4)) 1616 goto trunc; 1617 } 1618 1619 idtype_len =id_len - sizeof(struct ikev2_id); 1620 dumpascii = 0; 1621 dumphex = 0; 1622 typedata = (unsigned char *)(ext)+sizeof(struct ikev2_id); 1623 1624 switch(id.type) { 1625 case ID_IPV4_ADDR: 1626 ND_PRINT((ndo, " ipv4:")); 1627 dumphex=1; 1628 break; 1629 case ID_FQDN: 1630 ND_PRINT((ndo, " fqdn:")); 1631 dumpascii=1; 1632 break; 1633 case ID_RFC822_ADDR: 1634 ND_PRINT((ndo, " rfc822:")); 1635 dumpascii=1; 1636 break; 1637 case ID_IPV6_ADDR: 1638 ND_PRINT((ndo, " ipv6:")); 1639 dumphex=1; 1640 break; 1641 case ID_DER_ASN1_DN: 1642 ND_PRINT((ndo, " dn:")); 1643 dumphex=1; 1644 break; 1645 case ID_DER_ASN1_GN: 1646 ND_PRINT((ndo, " gn:")); 1647 dumphex=1; 1648 break; 1649 case ID_KEY_ID: 1650 ND_PRINT((ndo, " keyid:")); 1651 dumphex=1; 1652 break; 1653 } 1654 1655 if(dumpascii) { 1656 ND_TCHECK2(*typedata, idtype_len); 1657 for(i=0; i<idtype_len; i++) { 1658 if(isprint(typedata[i])) { 1659 ND_PRINT((ndo, "%c", typedata[i])); 1660 } else { 1661 ND_PRINT((ndo, ".")); 1662 } 1663 } 1664 } 1665 if(dumphex) { 1666 if (!rawprint(ndo, (caddr_t)typedata, idtype_len)) 1667 goto trunc; 1668 } 1669 1670 return (u_char *)ext + id_len; 1671trunc: 1672 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1673 return NULL; 1674} 1675 1676static const u_char * 1677ikev2_cert_print(netdissect_options *ndo, u_char tpay, 1678 const struct isakmp_gen *ext, 1679 u_int item_len _U_, const u_char *ep _U_, 1680 u_int32_t phase _U_, u_int32_t doi _U_, 1681 u_int32_t proto _U_, int depth _U_) 1682{ 1683 return ikev2_gen_print(ndo, tpay, ext); 1684} 1685 1686static const u_char * 1687ikev2_cr_print(netdissect_options *ndo, u_char tpay, 1688 const struct isakmp_gen *ext, 1689 u_int item_len _U_, const u_char *ep _U_, 1690 u_int32_t phase _U_, u_int32_t doi _U_, 1691 u_int32_t proto _U_, int depth _U_) 1692{ 1693 return ikev2_gen_print(ndo, tpay, ext); 1694} 1695 1696static const u_char * 1697ikev2_auth_print(netdissect_options *ndo, u_char tpay, 1698 const struct isakmp_gen *ext, 1699 u_int item_len _U_, const u_char *ep _U_, 1700 u_int32_t phase _U_, u_int32_t doi _U_, 1701 u_int32_t proto _U_, int depth _U_) 1702{ 1703 struct ikev2_auth a; 1704 const char *v2_auth[]={ "invalid", "rsasig", 1705 "shared-secret", "dsssig" }; 1706 u_char *authdata = (u_char*)ext + sizeof(a); 1707 unsigned int len; 1708 1709 ND_TCHECK(*ext); 1710 safememcpy(&a, ext, sizeof(a)); 1711 ikev2_pay_print(ndo, NPSTR(tpay), a.h.critical); 1712 len = ntohs(a.h.len); 1713 1714 ND_PRINT((ndo," len=%d method=%s", len-4, 1715 STR_OR_ID(a.auth_method, v2_auth))); 1716 1717 if (1 < ndo->ndo_vflag && 4 < len) { 1718 ND_PRINT((ndo," authdata=(")); 1719 if (!rawprint(ndo, (caddr_t)authdata, len - sizeof(a))) 1720 goto trunc; 1721 ND_PRINT((ndo,") ")); 1722 } else if(ndo->ndo_vflag && 4 < len) { 1723 if(!ike_show_somedata(ndo, authdata, ep)) goto trunc; 1724 } 1725 1726 return (u_char *)ext + len; 1727trunc: 1728 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1729 return NULL; 1730} 1731 1732static const u_char * 1733ikev2_nonce_print(netdissect_options *ndo, u_char tpay, 1734 const struct isakmp_gen *ext, 1735 u_int item_len _U_, const u_char *ep _U_, 1736 u_int32_t phase _U_, u_int32_t doi _U_, 1737 u_int32_t proto _U_, int depth _U_) 1738{ 1739 struct isakmp_gen e; 1740 1741 ND_TCHECK(*ext); 1742 safememcpy(&e, ext, sizeof(e)); 1743 ikev2_pay_print(ndo, "nonce", e.critical); 1744 1745 ND_PRINT((ndo," len=%d", ntohs(e.len) - 4)); 1746 if (1 < ndo->ndo_vflag && 4 < ntohs(e.len)) { 1747 ND_PRINT((ndo," nonce=(")); 1748 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 1749 goto trunc; 1750 ND_PRINT((ndo,") ")); 1751 } else if(ndo->ndo_vflag && 4 < ntohs(e.len)) { 1752 if(!ike_show_somedata(ndo, (const u_char *)(ext+1), ep)) goto trunc; 1753 } 1754 1755 return (u_char *)ext + ntohs(e.len); 1756trunc: 1757 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 1758 return NULL; 1759} 1760 1761/* notify payloads */ 1762static const u_char * 1763ikev2_n_print(netdissect_options *ndo, u_char tpay _U_, 1764 const struct isakmp_gen *ext, 1765 u_int item_len _U_, const u_char *ep _U_, 1766 u_int32_t phase _U_, u_int32_t doi _U_, 1767 u_int32_t proto _U_, int depth _U_) 1768{ 1769 struct ikev2_n *p, n; 1770 const u_char *cp; 1771 u_char *ep2; 1772 u_char showspi, showdata, showsomedata; 1773 const char *notify_name; 1774 u_int32_t type; 1775 1776 p = (struct ikev2_n *)ext; 1777 ND_TCHECK(*p); 1778 safememcpy(&n, ext, sizeof(n)); 1779 ikev2_pay_print(ndo, NPSTR(ISAKMP_NPTYPE_N), n.h.critical); 1780 1781 showspi = 1; 1782 showdata = 0; 1783 showsomedata=0; 1784 notify_name=NULL; 1785 1786 ND_PRINT((ndo," prot_id=%s", PROTOIDSTR(n.prot_id))); 1787 1788 type = ntohs(n.type); 1789 1790 /* notify space is annoying sparse */ 1791 switch(type) { 1792 case IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD: 1793 notify_name = "unsupported_critical_payload"; 1794 showspi = 0; 1795 break; 1796 1797 case IV2_NOTIFY_INVALID_IKE_SPI: 1798 notify_name = "invalid_ike_spi"; 1799 showspi = 1; 1800 break; 1801 1802 case IV2_NOTIFY_INVALID_MAJOR_VERSION: 1803 notify_name = "invalid_major_version"; 1804 showspi = 0; 1805 break; 1806 1807 case IV2_NOTIFY_INVALID_SYNTAX: 1808 notify_name = "invalid_syntax"; 1809 showspi = 1; 1810 break; 1811 1812 case IV2_NOTIFY_INVALID_MESSAGE_ID: 1813 notify_name = "invalid_message_id"; 1814 showspi = 1; 1815 break; 1816 1817 case IV2_NOTIFY_INVALID_SPI: 1818 notify_name = "invalid_spi"; 1819 showspi = 1; 1820 break; 1821 1822 case IV2_NOTIFY_NO_PROPOSAL_CHOSEN: 1823 notify_name = "no_protocol_chosen"; 1824 showspi = 1; 1825 break; 1826 1827 case IV2_NOTIFY_INVALID_KE_PAYLOAD: 1828 notify_name = "invalid_ke_payload"; 1829 showspi = 1; 1830 break; 1831 1832 case IV2_NOTIFY_AUTHENTICATION_FAILED: 1833 notify_name = "authentication_failed"; 1834 showspi = 1; 1835 break; 1836 1837 case IV2_NOTIFY_SINGLE_PAIR_REQUIRED: 1838 notify_name = "single_pair_required"; 1839 showspi = 1; 1840 break; 1841 1842 case IV2_NOTIFY_NO_ADDITIONAL_SAS: 1843 notify_name = "no_additional_sas"; 1844 showspi = 0; 1845 break; 1846 1847 case IV2_NOTIFY_INTERNAL_ADDRESS_FAILURE: 1848 notify_name = "internal_address_failure"; 1849 showspi = 0; 1850 break; 1851 1852 case IV2_NOTIFY_FAILED_CP_REQUIRED: 1853 notify_name = "failed:cp_required"; 1854 showspi = 0; 1855 break; 1856 1857 case IV2_NOTIFY_INVALID_SELECTORS: 1858 notify_name = "invalid_selectors"; 1859 showspi = 0; 1860 break; 1861 1862 case IV2_NOTIFY_INITIAL_CONTACT: 1863 notify_name = "initial_contact"; 1864 showspi = 0; 1865 break; 1866 1867 case IV2_NOTIFY_SET_WINDOW_SIZE: 1868 notify_name = "set_window_size"; 1869 showspi = 0; 1870 break; 1871 1872 case IV2_NOTIFY_ADDITIONAL_TS_POSSIBLE: 1873 notify_name = "additional_ts_possible"; 1874 showspi = 0; 1875 break; 1876 1877 case IV2_NOTIFY_IPCOMP_SUPPORTED: 1878 notify_name = "ipcomp_supported"; 1879 showspi = 0; 1880 break; 1881 1882 case IV2_NOTIFY_NAT_DETECTION_SOURCE_IP: 1883 notify_name = "nat_detection_source_ip"; 1884 showspi = 1; 1885 break; 1886 1887 case IV2_NOTIFY_NAT_DETECTION_DESTINATION_IP: 1888 notify_name = "nat_detection_destination_ip"; 1889 showspi = 1; 1890 break; 1891 1892 case IV2_NOTIFY_COOKIE: 1893 notify_name = "cookie"; 1894 showspi = 1; 1895 showsomedata= 1; 1896 showdata= 0; 1897 break; 1898 1899 case IV2_NOTIFY_USE_TRANSPORT_MODE: 1900 notify_name = "use_transport_mode"; 1901 showspi = 0; 1902 break; 1903 1904 case IV2_NOTIFY_HTTP_CERT_LOOKUP_SUPPORTED: 1905 notify_name = "http_cert_lookup_supported"; 1906 showspi = 0; 1907 break; 1908 1909 case IV2_NOTIFY_REKEY_SA: 1910 notify_name = "rekey_sa"; 1911 showspi = 1; 1912 break; 1913 1914 case IV2_NOTIFY_ESP_TFC_PADDING_NOT_SUPPORTED: 1915 notify_name = "tfc_padding_not_supported"; 1916 showspi = 0; 1917 break; 1918 1919 case IV2_NOTIFY_NON_FIRST_FRAGMENTS_ALSO: 1920 notify_name = "non_first_fragment_also"; 1921 showspi = 0; 1922 break; 1923 1924 default: 1925 if (type < 8192) { 1926 notify_name="error"; 1927 } else if(type < 16384) { 1928 notify_name="private-error"; 1929 } else if(type < 40960) { 1930 notify_name="status"; 1931 } else { 1932 notify_name="private-status"; 1933 } 1934 } 1935 1936 if(notify_name) { 1937 ND_PRINT((ndo," type=%u(%s)", type, notify_name)); 1938 } 1939 1940 1941 if (showspi && n.spi_size) { 1942 ND_PRINT((ndo," spi=")); 1943 if (!rawprint(ndo, (caddr_t)(p + 1), n.spi_size)) 1944 goto trunc; 1945 } 1946 1947 cp = (u_char *)(p + 1) + n.spi_size; 1948 ep2 = (u_char *)p + item_len; 1949 1950 if(3 < ndo->ndo_vflag) { 1951 showdata = 1; 1952 } 1953 1954 if ((showdata || (showsomedata && ep-cp < 30)) && cp < ep) { 1955 ND_PRINT((ndo," data=(")); 1956 if (!rawprint(ndo, (caddr_t)(cp), ep - cp)) 1957 goto trunc; 1958 1959 ND_PRINT((ndo,")")); 1960 1961 } else if(showsomedata && cp < ep) { 1962 if(!ike_show_somedata(ndo, cp, ep)) goto trunc; 1963 } 1964 1965 return (u_char *)ext + item_len; 1966trunc: 1967 ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_N))); 1968 return NULL; 1969} 1970 1971static const u_char * 1972ikev2_d_print(netdissect_options *ndo, u_char tpay, 1973 const struct isakmp_gen *ext, 1974 u_int item_len _U_, const u_char *ep _U_, 1975 u_int32_t phase _U_, u_int32_t doi _U_, 1976 u_int32_t proto _U_, int depth _U_) 1977{ 1978 return ikev2_gen_print(ndo, tpay, ext); 1979} 1980 1981static const u_char * 1982ikev2_vid_print(netdissect_options *ndo, u_char tpay, 1983 const struct isakmp_gen *ext, 1984 u_int item_len _U_, const u_char *ep _U_, 1985 u_int32_t phase _U_, u_int32_t doi _U_, 1986 u_int32_t proto _U_, int depth _U_) 1987{ 1988 struct isakmp_gen e; 1989 const u_char *vid; 1990 int i, len; 1991 1992 ND_TCHECK(*ext); 1993 safememcpy(&e, ext, sizeof(e)); 1994 ikev2_pay_print(ndo, NPSTR(tpay), e.critical); 1995 ND_PRINT((ndo," len=%d vid=", ntohs(e.len) - 4)); 1996 1997 vid = (const u_char *)(ext+1); 1998 len = ntohs(e.len) - 4; 1999 ND_TCHECK2(*vid, len); 2000 for(i=0; i<len; i++) { 2001 if(isprint(vid[i])) ND_PRINT((ndo, "%c", vid[i])); 2002 else ND_PRINT((ndo, ".")); 2003 } 2004 if (2 < ndo->ndo_vflag && 4 < len) { 2005 ND_PRINT((ndo," ")); 2006 if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4)) 2007 goto trunc; 2008 } 2009 return (u_char *)ext + ntohs(e.len); 2010trunc: 2011 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 2012 return NULL; 2013} 2014 2015static const u_char * 2016ikev2_TS_print(netdissect_options *ndo, u_char tpay, 2017 const struct isakmp_gen *ext, 2018 u_int item_len _U_, const u_char *ep _U_, 2019 u_int32_t phase _U_, u_int32_t doi _U_, 2020 u_int32_t proto _U_, int depth _U_) 2021{ 2022 return ikev2_gen_print(ndo, tpay, ext); 2023} 2024 2025static const u_char * 2026ikev2_e_print(netdissect_options *ndo, 2027#ifndef HAVE_LIBCRYPTO 2028 _U_ 2029#endif 2030 struct isakmp *base, 2031 u_char tpay, 2032 const struct isakmp_gen *ext, 2033 u_int item_len _U_, const u_char *ep _U_, 2034#ifndef HAVE_LIBCRYPTO 2035 _U_ 2036#endif 2037 u_int32_t phase, 2038#ifndef HAVE_LIBCRYPTO 2039 _U_ 2040#endif 2041 u_int32_t doi, 2042#ifndef HAVE_LIBCRYPTO 2043 _U_ 2044#endif 2045 u_int32_t proto, 2046#ifndef HAVE_LIBCRYPTO 2047 _U_ 2048#endif 2049 int depth) 2050{ 2051 struct isakmp_gen e; 2052 u_char *dat; 2053 volatile int dlen; 2054 2055 ND_TCHECK(*ext); 2056 safememcpy(&e, ext, sizeof(e)); 2057 ikev2_pay_print(ndo, NPSTR(tpay), e.critical); 2058 2059 dlen = ntohs(e.len)-4; 2060 2061 ND_PRINT((ndo," len=%d", dlen)); 2062 if (2 < ndo->ndo_vflag && 4 < dlen) { 2063 ND_PRINT((ndo," ")); 2064 if (!rawprint(ndo, (caddr_t)(ext + 1), dlen)) 2065 goto trunc; 2066 } 2067 2068 dat = (u_char *)(ext+1); 2069 ND_TCHECK2(*dat, dlen); 2070 2071#ifdef HAVE_LIBCRYPTO 2072 /* try to decypt it! */ 2073 if(esp_print_decrypt_buffer_by_ikev2(ndo, 2074 base->flags & ISAKMP_FLAG_I, 2075 base->i_ck, base->r_ck, 2076 dat, dat+dlen)) { 2077 2078 ext = (const struct isakmp_gen *)ndo->ndo_packetp; 2079 2080 /* got it decrypted, print stuff inside. */ 2081 ikev2_sub_print(ndo, base, e.np, ext, ndo->ndo_snapend, 2082 phase, doi, proto, depth+1); 2083 } 2084#endif 2085 2086 2087 /* always return NULL, because E must be at end, and NP refers 2088 * to what was inside. 2089 */ 2090 return NULL; 2091trunc: 2092 ND_PRINT((ndo," [|%s]", NPSTR(tpay))); 2093 return NULL; 2094} 2095 2096static const u_char * 2097ikev2_cp_print(netdissect_options *ndo, u_char tpay, 2098 const struct isakmp_gen *ext, 2099 u_int item_len _U_, const u_char *ep _U_, 2100 u_int32_t phase _U_, u_int32_t doi _U_, 2101 u_int32_t proto _U_, int depth _U_) 2102{ 2103 return ikev2_gen_print(ndo, tpay, ext); 2104} 2105 2106static const u_char * 2107ikev2_eap_print(netdissect_options *ndo, u_char tpay, 2108 const struct isakmp_gen *ext, 2109 u_int item_len _U_, const u_char *ep _U_, 2110 u_int32_t phase _U_, u_int32_t doi _U_, 2111 u_int32_t proto _U_, int depth _U_) 2112{ 2113 return ikev2_gen_print(ndo, tpay, ext); 2114} 2115 2116static const u_char * 2117ike_sub0_print(netdissect_options *ndo, 2118 u_char np, const struct isakmp_gen *ext, const u_char *ep, 2119 2120 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth) 2121{ 2122 const u_char *cp; 2123 struct isakmp_gen e; 2124 u_int item_len; 2125 2126 cp = (u_char *)ext; 2127 ND_TCHECK(*ext); 2128 safememcpy(&e, ext, sizeof(e)); 2129 2130 /* 2131 * Since we can't have a payload length of less than 4 bytes, 2132 * we need to bail out here if the generic header is nonsensical 2133 * or truncated, otherwise we could loop forever processing 2134 * zero-length items or otherwise misdissect the packet. 2135 */ 2136 item_len = ntohs(e.len); 2137 if (item_len <= 4) 2138 return NULL; 2139 2140 if (NPFUNC(np)) { 2141 /* 2142 * XXX - what if item_len is too short, or too long, 2143 * for this payload type? 2144 */ 2145 cp = (*npfunc[np])(ndo, np, ext, item_len, ep, phase, doi, proto, depth); 2146 } else { 2147 ND_PRINT((ndo,"%s", NPSTR(np))); 2148 cp += item_len; 2149 } 2150 2151 return cp; 2152trunc: 2153 ND_PRINT((ndo," [|isakmp]")); 2154 return NULL; 2155} 2156 2157static const u_char * 2158ikev1_sub_print(netdissect_options *ndo, 2159 u_char np, const struct isakmp_gen *ext, const u_char *ep, 2160 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth) 2161{ 2162 const u_char *cp; 2163 int i; 2164 struct isakmp_gen e; 2165 2166 cp = (const u_char *)ext; 2167 2168 while (np) { 2169 ND_TCHECK(*ext); 2170 2171 safememcpy(&e, ext, sizeof(e)); 2172 2173 ND_TCHECK2(*ext, ntohs(e.len)); 2174 2175 depth++; 2176 ND_PRINT((ndo,"\n")); 2177 for (i = 0; i < depth; i++) 2178 ND_PRINT((ndo," ")); 2179 ND_PRINT((ndo,"(")); 2180 cp = ike_sub0_print(ndo, np, ext, ep, phase, doi, proto, depth); 2181 ND_PRINT((ndo,")")); 2182 depth--; 2183 2184 if (cp == NULL) { 2185 /* Zero-length subitem */ 2186 return NULL; 2187 } 2188 2189 np = e.np; 2190 ext = (struct isakmp_gen *)cp; 2191 } 2192 return cp; 2193trunc: 2194 ND_PRINT((ndo," [|%s]", NPSTR(np))); 2195 return NULL; 2196} 2197 2198static char * 2199numstr(int x) 2200{ 2201 static char buf[20]; 2202 snprintf(buf, sizeof(buf), "#%d", x); 2203 return buf; 2204} 2205 2206/* 2207 * some compiler tries to optimize memcpy(), using the alignment constraint 2208 * on the argument pointer type. by using this function, we try to avoid the 2209 * optimization. 2210 */ 2211static void 2212safememcpy(void *p, const void *q, size_t l) 2213{ 2214 memcpy(p, q, l); 2215} 2216 2217static void 2218ikev1_print(netdissect_options *ndo, 2219 const u_char *bp, u_int length, 2220 const u_char *bp2, struct isakmp *base) 2221{ 2222 const struct isakmp *p; 2223 const u_char *ep; 2224 u_char np; 2225 int i; 2226 int phase; 2227 2228 p = (const struct isakmp *)bp; 2229 ep = ndo->ndo_snapend; 2230 2231 phase = (*(u_int32_t *)base->msgid == 0) ? 1 : 2; 2232 if (phase == 1) 2233 ND_PRINT((ndo," phase %d", phase)); 2234 else 2235 ND_PRINT((ndo," phase %d/others", phase)); 2236 2237 i = cookie_find(&base->i_ck); 2238 if (i < 0) { 2239 if (iszero((u_char *)&base->r_ck, sizeof(base->r_ck))) { 2240 /* the first packet */ 2241 ND_PRINT((ndo," I")); 2242 if (bp2) 2243 cookie_record(&base->i_ck, bp2); 2244 } else 2245 ND_PRINT((ndo," ?")); 2246 } else { 2247 if (bp2 && cookie_isinitiator(i, bp2)) 2248 ND_PRINT((ndo," I")); 2249 else if (bp2 && cookie_isresponder(i, bp2)) 2250 ND_PRINT((ndo," R")); 2251 else 2252 ND_PRINT((ndo," ?")); 2253 } 2254 2255 ND_PRINT((ndo," %s", ETYPESTR(base->etype))); 2256 if (base->flags) { 2257 ND_PRINT((ndo,"[%s%s]", base->flags & ISAKMP_FLAG_E ? "E" : "", 2258 base->flags & ISAKMP_FLAG_C ? "C" : "")); 2259 } 2260 2261 if (ndo->ndo_vflag) { 2262 const struct isakmp_gen *ext; 2263 int nparen; 2264 2265 ND_PRINT((ndo,":")); 2266 2267 /* regardless of phase... */ 2268 if (base->flags & ISAKMP_FLAG_E) { 2269 /* 2270 * encrypted, nothing we can do right now. 2271 * we hope to decrypt the packet in the future... 2272 */ 2273 ND_PRINT((ndo," [encrypted %s]", NPSTR(base->np))); 2274 goto done; 2275 } 2276 2277 nparen = 0; 2278 CHECKLEN(p + 1, base->np); 2279 np = base->np; 2280 ext = (struct isakmp_gen *)(p + 1); 2281 ikev1_sub_print(ndo, np, ext, ep, phase, 0, 0, 0); 2282 } 2283 2284done: 2285 if (ndo->ndo_vflag) { 2286 if (ntohl(base->len) != length) { 2287 ND_PRINT((ndo," (len mismatch: isakmp %u/ip %u)", 2288 (u_int32_t)ntohl(base->len), length)); 2289 } 2290 } 2291} 2292 2293static const u_char * 2294ikev2_sub0_print(netdissect_options *ndo, struct isakmp *base, 2295 u_char np, int pcount, 2296 const struct isakmp_gen *ext, const u_char *ep, 2297 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth) 2298{ 2299 const u_char *cp; 2300 struct isakmp_gen e; 2301 u_int item_len; 2302 2303 cp = (u_char *)ext; 2304 ND_TCHECK(*ext); 2305 safememcpy(&e, ext, sizeof(e)); 2306 2307 /* 2308 * Since we can't have a payload length of less than 4 bytes, 2309 * we need to bail out here if the generic header is nonsensical 2310 * or truncated, otherwise we could loop forever processing 2311 * zero-length items or otherwise misdissect the packet. 2312 */ 2313 item_len = ntohs(e.len); 2314 if (item_len <= 4) 2315 return NULL; 2316 2317 if(np == ISAKMP_NPTYPE_P) { 2318 cp = ikev2_p_print(ndo, np, pcount, ext, item_len, 2319 ep, phase, doi, proto, depth); 2320 } else if(np == ISAKMP_NPTYPE_T) { 2321 cp = ikev2_t_print(ndo, np, pcount, ext, item_len, 2322 ep, phase, doi, proto, depth); 2323 } else if(np == ISAKMP_NPTYPE_v2E) { 2324 cp = ikev2_e_print(ndo, base, np, ext, item_len, 2325 ep, phase, doi, proto, depth); 2326 } else if (NPFUNC(np)) { 2327 /* 2328 * XXX - what if item_len is too short, or too long, 2329 * for this payload type? 2330 */ 2331 cp = (*npfunc[np])(ndo, np, /*pcount,*/ ext, item_len, 2332 ep, phase, doi, proto, depth); 2333 } else { 2334 ND_PRINT((ndo,"%s", NPSTR(np))); 2335 cp += item_len; 2336 } 2337 2338 return cp; 2339trunc: 2340 ND_PRINT((ndo," [|isakmp]")); 2341 return NULL; 2342} 2343 2344static const u_char * 2345ikev2_sub_print(netdissect_options *ndo, 2346 struct isakmp *base, 2347 u_char np, const struct isakmp_gen *ext, const u_char *ep, 2348 u_int32_t phase, u_int32_t doi, u_int32_t proto, int depth) 2349{ 2350 const u_char *cp; 2351 int i; 2352 int pcount; 2353 struct isakmp_gen e; 2354 2355 cp = (const u_char *)ext; 2356 pcount = 0; 2357 while (np) { 2358 pcount++; 2359 ND_TCHECK(*ext); 2360 2361 safememcpy(&e, ext, sizeof(e)); 2362 2363 ND_TCHECK2(*ext, ntohs(e.len)); 2364 2365 depth++; 2366 ND_PRINT((ndo,"\n")); 2367 for (i = 0; i < depth; i++) 2368 ND_PRINT((ndo," ")); 2369 ND_PRINT((ndo,"(")); 2370 cp = ikev2_sub0_print(ndo, base, np, pcount, 2371 ext, ep, phase, doi, proto, depth); 2372 ND_PRINT((ndo,")")); 2373 depth--; 2374 2375 if (cp == NULL) { 2376 /* Zero-length subitem */ 2377 return NULL; 2378 } 2379 2380 np = e.np; 2381 ext = (struct isakmp_gen *)cp; 2382 } 2383 return cp; 2384trunc: 2385 ND_PRINT((ndo," [|%s]", NPSTR(np))); 2386 return NULL; 2387} 2388 2389static void 2390ikev2_print(netdissect_options *ndo, 2391 const u_char *bp, u_int length, 2392 const u_char *bp2 _U_, struct isakmp *base) 2393{ 2394 const struct isakmp *p; 2395 const u_char *ep; 2396 u_char np; 2397 int phase; 2398 2399 p = (const struct isakmp *)bp; 2400 ep = ndo->ndo_snapend; 2401 2402 phase = (*(u_int32_t *)base->msgid == 0) ? 1 : 2; 2403 if (phase == 1) 2404 ND_PRINT((ndo, " parent_sa")); 2405 else 2406 ND_PRINT((ndo, " child_sa ")); 2407 2408 ND_PRINT((ndo, " %s", ETYPESTR(base->etype))); 2409 if (base->flags) { 2410 ND_PRINT((ndo, "[%s%s%s]", 2411 base->flags & ISAKMP_FLAG_I ? "I" : "", 2412 base->flags & ISAKMP_FLAG_V ? "V" : "", 2413 base->flags & ISAKMP_FLAG_R ? "R" : "")); 2414 } 2415 2416 if (ndo->ndo_vflag) { 2417 const struct isakmp_gen *ext; 2418 int nparen; 2419 2420 ND_PRINT((ndo, ":")); 2421 2422 /* regardless of phase... */ 2423 if (base->flags & ISAKMP_FLAG_E) { 2424 /* 2425 * encrypted, nothing we can do right now. 2426 * we hope to decrypt the packet in the future... 2427 */ 2428 ND_PRINT((ndo, " [encrypted %s]", NPSTR(base->np))); 2429 goto done; 2430 } 2431 2432 nparen = 0; 2433 CHECKLEN(p + 1, base->np) 2434 2435 np = base->np; 2436 ext = (struct isakmp_gen *)(p + 1); 2437 ikev2_sub_print(ndo, base, np, ext, ep, phase, 0, 0, 0); 2438 } 2439 2440done: 2441 if (ndo->ndo_vflag) { 2442 if (ntohl(base->len) != length) { 2443 ND_PRINT((ndo, " (len mismatch: isakmp %u/ip %u)", 2444 (u_int32_t)ntohl(base->len), length)); 2445 } 2446 } 2447} 2448 2449void 2450isakmp_print(netdissect_options *ndo, 2451 const u_char *bp, u_int length, 2452 const u_char *bp2) 2453{ 2454 const struct isakmp *p; 2455 struct isakmp base; 2456 const u_char *ep; 2457 int major, minor; 2458 2459#ifdef HAVE_LIBCRYPTO 2460 /* initialize SAs */ 2461 if (ndo->ndo_sa_list_head == NULL) { 2462 if (ndo->ndo_espsecret) 2463 esp_print_decodesecret(ndo); 2464 } 2465#endif 2466 2467 p = (const struct isakmp *)bp; 2468 ep = ndo->ndo_snapend; 2469 2470 if ((struct isakmp *)ep < p + 1) { 2471 ND_PRINT((ndo,"[|isakmp]")); 2472 return; 2473 } 2474 2475 safememcpy(&base, p, sizeof(base)); 2476 2477 ND_PRINT((ndo,"isakmp")); 2478 major = (base.vers & ISAKMP_VERS_MAJOR) 2479 >> ISAKMP_VERS_MAJOR_SHIFT; 2480 minor = (base.vers & ISAKMP_VERS_MINOR) 2481 >> ISAKMP_VERS_MINOR_SHIFT; 2482 2483 if (ndo->ndo_vflag) { 2484 ND_PRINT((ndo," %d.%d", major, minor)); 2485 } 2486 2487 if (ndo->ndo_vflag) { 2488 ND_PRINT((ndo," msgid ")); 2489 hexprint(ndo, (caddr_t)&base.msgid, sizeof(base.msgid)); 2490 } 2491 2492 if (1 < ndo->ndo_vflag) { 2493 ND_PRINT((ndo," cookie ")); 2494 hexprint(ndo, (caddr_t)&base.i_ck, sizeof(base.i_ck)); 2495 ND_PRINT((ndo,"->")); 2496 hexprint(ndo, (caddr_t)&base.r_ck, sizeof(base.r_ck)); 2497 } 2498 ND_PRINT((ndo,":")); 2499 2500 switch(major) { 2501 case IKEv1_MAJOR_VERSION: 2502 ikev1_print(ndo, bp, length, bp2, &base); 2503 break; 2504 2505 case IKEv2_MAJOR_VERSION: 2506 ikev2_print(ndo, bp, length, bp2, &base); 2507 break; 2508 } 2509} 2510 2511void 2512isakmp_rfc3948_print(netdissect_options *ndo, 2513 const u_char *bp, u_int length, 2514 const u_char *bp2) 2515{ 2516 const u_char *ep; 2517 ep = ndo->ndo_snapend; 2518 2519 if(length == 1 && bp[0]==0xff) { 2520 ND_PRINT((ndo, "isakmp-nat-keep-alive")); 2521 return; 2522 } 2523 2524 if(length < 4) { 2525 goto trunc; 2526 } 2527 2528 /* 2529 * see if this is an IKE packet 2530 */ 2531 if(bp[0]==0 && bp[1]==0 && bp[2]==0 && bp[3]==0) { 2532 ND_PRINT((ndo, "NONESP-encap: ")); 2533 isakmp_print(ndo, bp+4, length-4, bp2); 2534 return; 2535 } 2536 2537 /* must be an ESP packet */ 2538 { 2539 int nh, enh, padlen; 2540 int advance; 2541 2542 ND_PRINT((ndo, "UDP-encap: ")); 2543 2544 advance = esp_print(ndo, bp, length, bp2, &enh, &padlen); 2545 if(advance <= 0) 2546 return; 2547 2548 bp += advance; 2549 length -= advance + padlen; 2550 nh = enh & 0xff; 2551 2552 ip_print_inner(ndo, bp, length, nh, bp2); 2553 return; 2554 } 2555 2556trunc: 2557 ND_PRINT((ndo,"[|isakmp]")); 2558 return; 2559} 2560 2561/* 2562 * Local Variables: 2563 * c-style: whitesmith 2564 * c-basic-offset: 8 2565 * End: 2566 */ 2567 2568 2569 2570 2571