1 /* $OpenBSD: print-ike.c,v 1.31 2008/12/18 16:18:49 hshoexer Exp $ */ 2 3 /* 4 * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 2001 H�kan Olsson. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that: (1) source code distributions 10 * retain the above copyright notice and this paragraph in its entirety, (2) 11 * distributions including binary code include the above copyright notice and 12 * this paragraph in its entirety in the documentation or other materials 13 * provided with the distribution, and (3) all advertising materials mentioning 14 * features or use of this software display the following acknowledgement: 15 * ``This product includes software developed by the University of California, 16 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 17 * the University nor the names of its contributors may be used to endorse 18 * or promote products derived from this software without specific prior 19 * written permission. 20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 21 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 23 * 24 * Format and print ike (isakmp) packets. 25 * By Tero Kivinen <kivinen@ssh.fi>, Tero Mononen <tmo@ssh.fi>, 26 * Tatu Ylonen <ylo@ssh.fi> and Timo J. Rinne <tri@ssh.fi> 27 * in co-operation with SSH Communications Security, Espoo, Finland 28 */ 29 30 #ifndef lint 31 static const char rcsid[] = 32 "@(#) $Id: print-ike.c,v 1.31 2008/12/18 16:18:49 hshoexer Exp $ (XXX)"; 33 #endif 34 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/socket.h> 38 39 struct mbuf; 40 struct rtentry; 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <arpa/inet.h> 44 45 #include <ctype.h> 46 #include <stdio.h> 47 #include <string.h> 48 49 #include "interface.h" 50 #include "addrtoname.h" 51 #include "ike.h" 52 53 struct isakmp_header { 54 u_int8_t init_cookie[8]; 55 u_int8_t resp_cookie[8]; 56 u_int8_t next_payload; 57 u_int8_t version; 58 u_int8_t exgtype; 59 u_int8_t flags; 60 u_int8_t msgid[4]; 61 u_int32_t length; 62 u_int8_t payloads[0]; 63 }; 64 65 struct sa_payload { 66 u_int8_t next_payload; 67 u_int8_t reserved; 68 u_int16_t payload_length; 69 u_int32_t doi; 70 u_int8_t situation[0]; 71 }; 72 73 struct proposal_payload { 74 u_int8_t next_payload; 75 u_int8_t reserved; 76 u_int16_t payload_length; 77 u_int8_t nprop; 78 u_int8_t proto; 79 u_int8_t spi_size; 80 u_int8_t nspis; 81 u_int8_t spi[0]; 82 }; 83 84 struct transform_payload { 85 u_int8_t next_payload; 86 u_int8_t reserved; 87 u_int16_t payload_length; 88 u_int8_t ntrans; 89 u_int8_t transform; 90 u_int16_t reserved2; 91 u_int8_t attribute[0]; 92 }; 93 94 struct ke_payload { 95 u_int8_t next_payload; 96 u_int8_t reserved; 97 u_int16_t payload_length; 98 u_int8_t data[0]; 99 }; 100 101 struct id_payload { 102 u_int8_t next_payload; 103 u_int8_t reserved; 104 u_int16_t payload_length; 105 u_int8_t type; 106 u_int8_t id_data[3]; 107 u_int8_t data[0]; 108 }; 109 110 struct notification_payload { 111 u_int8_t next_payload; 112 u_int8_t reserved; 113 u_int16_t payload_length; 114 u_int32_t doi; 115 u_int8_t protocol_id; 116 u_int8_t spi_size; 117 u_int16_t type; 118 u_int8_t data[0]; 119 }; 120 121 struct delete_payload { 122 u_int8_t next_payload; 123 u_int8_t reserved; 124 u_int16_t payload_length; 125 u_int32_t doi; 126 u_int8_t proto; 127 u_int8_t spi_size; 128 u_int16_t nspis; 129 u_int8_t spi[0]; 130 }; 131 132 struct vendor_payload { 133 u_int8_t next_payload; 134 u_int8_t reserved; 135 u_int16_t payload_length; 136 u_int8_t vid[0]; 137 }; 138 139 struct attribute_payload { 140 u_int8_t next_payload; 141 u_int8_t reserved; 142 u_int16_t payload_length; 143 u_int8_t type; 144 u_int8_t reserved2; 145 u_int16_t id; 146 }; 147 148 static void ike_pl_print(u_int8_t, u_int8_t *, u_int8_t); 149 150 int ike_tab_level = 0; 151 u_int8_t xform_proto; 152 153 static const char *ike[] = IKE_PROTO_INITIALIZER; 154 155 #define SMALL_TABS 4 156 #define SPACES " " 157 const char * 158 ike_tab_offset(void) 159 { 160 const char *p, *endline; 161 static const char line[] = SPACES; 162 163 endline = line + sizeof line - 1; 164 p = endline - SMALL_TABS * (ike_tab_level); 165 166 return (p > line ? p : line); 167 } 168 169 static char * 170 ike_get_cookie (u_int8_t *ic, u_int8_t *rc) 171 { 172 static char cookie_jar[35]; 173 int i; 174 175 for (i = 0; i < 8; i++) 176 snprintf(cookie_jar + i*2, sizeof(cookie_jar) - i*2, 177 "%02x", *(ic + i)); 178 strlcat(cookie_jar, "->", sizeof(cookie_jar)); 179 for (i = 0; i < 8; i++) 180 snprintf(cookie_jar + 18 + i*2, sizeof(cookie_jar) - 18 - i*2, 181 "%02x", *(rc + i)); 182 return cookie_jar; 183 } 184 185 /* 186 * Print isakmp requests 187 */ 188 void 189 ike_print (const u_int8_t *cp, u_int length) 190 { 191 struct isakmp_header *ih; 192 const u_int8_t *ep; 193 u_int8_t *payload, next_payload; 194 int encrypted; 195 static const char *exgtypes[] = IKE_EXCHANGE_TYPES_INITIALIZER; 196 197 encrypted = 0; 198 199 #ifdef TCHECK 200 #undef TCHECK 201 #endif 202 #define TCHECK(var, l) if ((u_int8_t *)&(var) > ep - l) goto trunc 203 204 ih = (struct isakmp_header *)cp; 205 206 if (length < sizeof (struct isakmp_header)) 207 goto trunc; 208 209 /* 'ep' points to the end of avaible data. */ 210 ep = snapend; 211 212 printf(" isakmp"); 213 214 printf(" v%d.%d", ih->version >> 4, ih->version & 0xf); 215 216 printf(" exchange "); 217 if (ih->exgtype < (sizeof exgtypes/sizeof exgtypes[0])) 218 printf("%s", exgtypes[ih->exgtype]); 219 else 220 printf("%d (unknown)", ih->exgtype); 221 222 if (ih->flags & FLAGS_ENCRYPTION) { 223 printf(" encrypted"); 224 encrypted = 1; 225 } 226 227 if (ih->flags & FLAGS_COMMIT) { 228 printf(" commit"); 229 } 230 231 printf("\n\tcookie: %s", ike_get_cookie (ih->init_cookie, 232 ih->resp_cookie)); 233 234 TCHECK(ih->msgid, sizeof(ih->msgid)); 235 printf(" msgid: %02x%02x%02x%02x", ih->msgid[0], ih->msgid[1], 236 ih->msgid[2], ih->msgid[3]); 237 238 TCHECK(ih->length, sizeof(ih->length)); 239 printf(" len: %d", ntohl(ih->length)); 240 241 if (ih->version > 16) { 242 printf(" new version"); 243 return; 244 } 245 246 payload = ih->payloads; 247 next_payload = ih->next_payload; 248 249 /* if encrypted, then open special file for encryption keys */ 250 if (encrypted) { 251 /* decrypt XXX */ 252 return; 253 } 254 255 /* if verbose, print payload data */ 256 if (vflag) 257 ike_pl_print(next_payload, payload, ISAKMP_DOI); 258 259 return; 260 261 trunc: 262 fputs(" [|isakmp]", stdout); 263 } 264 265 void 266 ike_pl_sa_print (u_int8_t *buf, int len) 267 { 268 struct sa_payload *sp = (struct sa_payload *)buf; 269 u_int32_t sit_ipsec, doi; 270 271 if (len < sizeof(struct sa_payload)) { 272 printf(" [|payload]"); 273 return; 274 } 275 276 doi = ntohl(sp->doi); 277 printf(" DOI: %d", doi); 278 279 if (doi == IPSEC_DOI) { 280 if ((sp->situation + sizeof(u_int32_t)) > (buf + len)) { 281 printf(" [|payload]"); 282 return; 283 } 284 printf("(IPSEC) situation: "); 285 sit_ipsec = ntohl(*(u_int32_t *)sp->situation); 286 if (sit_ipsec & IKE_SITUATION_IDENTITY_ONLY) 287 printf("IDENTITY_ONLY "); 288 if (sit_ipsec & IKE_SITUATION_SECRECY) 289 printf("SECRECY "); 290 if (sit_ipsec & IKE_SITUATION_INTEGRITY) 291 printf("INTEGRITY "); 292 if ((sit_ipsec & IKE_SITUATION_MASK) == 0) 293 printf("0x%x (unknown)", sit_ipsec); 294 ike_pl_print (PAYLOAD_PROPOSAL, buf + 295 sizeof(struct sa_payload) + sizeof(u_int32_t), IPSEC_DOI); 296 } else 297 printf(" situation: (unknown)"); 298 } 299 300 int 301 ike_attribute_print (u_int8_t *buf, u_int8_t doi, int maxlen) 302 { 303 static char *attrs[] = IKE_ATTR_INITIALIZER; 304 static char *attr_enc[] = IKE_ATTR_ENCRYPT_INITIALIZER; 305 static char *attr_hash[] = IKE_ATTR_HASH_INITIALIZER; 306 static char *attr_auth[] = IKE_ATTR_AUTH_INITIALIZER; 307 static char *attr_gdesc[] = IKE_ATTR_GROUP_DESC_INITIALIZER; 308 static char *attr_gtype[] = IKE_ATTR_GROUP_INITIALIZER; 309 static char *attr_ltype[] = IKE_ATTR_SA_DURATION_INITIALIZER; 310 static char *ipsec_attrs[] = IPSEC_ATTR_INITIALIZER; 311 static char *ipsec_attr_encap[] = IPSEC_ATTR_ENCAP_INITIALIZER; 312 static char *ipsec_attr_auth[] = IPSEC_ATTR_AUTH_INITIALIZER; 313 static char *ipsec_attr_ltype[] = IPSEC_ATTR_DURATION_INITIALIZER; 314 315 u_int8_t af = buf[0] >> 7; 316 u_int16_t type = (buf[0] & 0x7f) << 8 | buf[1]; 317 u_int16_t len = buf[2] << 8 | buf[3], val; 318 319 if (doi == ISAKMP_DOI) 320 printf("\n\t%sattribute %s = ", ike_tab_offset(), 321 (type < sizeof attrs / sizeof attrs[0] ? 322 attrs[type] : "<unknown>")); 323 else 324 printf("\n\t%sattribute %s = ", ike_tab_offset(), 325 (type < (sizeof ipsec_attrs / sizeof ipsec_attrs[0]) ? 326 ipsec_attrs[type] : "<unknown>")); 327 328 if ((af == 1 && maxlen < 4) || (af == 0 && maxlen < (len + 4))) { 329 printf("\n\t%s[|attr]", ike_tab_offset()); 330 return maxlen; 331 } 332 333 if (af == 0) { 334 /* AF=0; print the variable length attribute value */ 335 for (val = 0; val < len; val++) 336 printf("%02x", *(buf + 4 + val)); 337 return len + 4; 338 } 339 340 val = len; /* For AF=1, this field is the "VALUE" */ 341 len = 4; /* and with AF=1, length is always 4 */ 342 343 #define CASE_PRINT(TYPE, var) \ 344 case TYPE : \ 345 if (val < sizeof var / sizeof var [0]) \ 346 printf("%s", var [val]); \ 347 else \ 348 printf("%d (unknown)", val); \ 349 break; 350 351 if (doi == ISAKMP_DOI) 352 switch(type) { 353 CASE_PRINT(IKE_ATTR_ENCRYPTION_ALGORITHM, attr_enc); 354 CASE_PRINT(IKE_ATTR_HASH_ALGORITHM, attr_hash); 355 CASE_PRINT(IKE_ATTR_AUTHENTICATION_METHOD, attr_auth); 356 CASE_PRINT(IKE_ATTR_GROUP_DESC, attr_gdesc); 357 CASE_PRINT(IKE_ATTR_GROUP_TYPE, attr_gtype); 358 CASE_PRINT(IKE_ATTR_LIFE_TYPE, attr_ltype); 359 default: 360 printf("%d", val); 361 } 362 else 363 switch(type) { 364 CASE_PRINT(IPSEC_ATTR_SA_LIFE_TYPE, ipsec_attr_ltype); 365 CASE_PRINT(IPSEC_ATTR_ENCAPSULATION_MODE, 366 ipsec_attr_encap); 367 CASE_PRINT(IPSEC_ATTR_AUTHENTICATION_ALGORITHM, 368 ipsec_attr_auth); 369 default: 370 printf("%d", val); 371 } 372 373 #undef CASE_PRINT 374 return len; 375 } 376 377 void 378 ike_pl_transform_print (u_int8_t *buf, int len, u_int8_t doi) 379 { 380 struct transform_payload *tp = (struct transform_payload *)buf; 381 const char *ah[] = IPSEC_AH_INITIALIZER; 382 const char *esp[] = IPSEC_ESP_INITIALIZER; 383 const char *ipcomp[] = IPCOMP_INITIALIZER; 384 u_int8_t *attr = tp->attribute; 385 386 if (len < sizeof(struct transform_payload)) { 387 printf(" [|payload]"); 388 return; 389 } 390 391 printf("\n\t%stransform: %u ID: ", ike_tab_offset(), tp->ntrans); 392 393 switch (doi) { 394 case ISAKMP_DOI: 395 if (tp->transform < (sizeof ike / sizeof ike[0])) 396 printf("%s", ike[tp->transform]); 397 else 398 printf("%d(unknown)", tp->transform); 399 break; 400 401 default: /* IPSEC_DOI */ 402 switch (xform_proto) { /* from ike_proposal_print */ 403 case PROTO_IPSEC_AH: 404 if (tp->transform < (sizeof ah / sizeof ah[0])) 405 printf("%s", ah[tp->transform]); 406 else 407 printf("%d(unknown)", tp->transform); 408 break; 409 case PROTO_IPSEC_ESP: 410 if (tp->transform < (sizeof esp / sizeof esp[0])) 411 printf("%s", esp[tp->transform]); 412 else 413 printf("%d(unknown)", tp->transform); 414 break; 415 case PROTO_IPCOMP: 416 if (tp->transform < (sizeof ipcomp / sizeof ipcomp[0])) 417 printf("%s", ipcomp[tp->transform]); 418 else 419 printf("%d(unknown)", tp->transform); 420 break; 421 default: 422 printf("%d(unknown)", tp->transform); 423 } 424 break; 425 } 426 427 ike_tab_level++; 428 while ((int)(attr - buf) < len) /* Skip last 'NONE' attr */ 429 attr += ike_attribute_print(attr, doi, len - (attr - buf)); 430 ike_tab_level--; 431 } 432 433 void 434 ike_pl_proposal_print (u_int8_t *buf, int len, u_int8_t doi) 435 { 436 struct proposal_payload *pp = (struct proposal_payload *)buf; 437 int i; 438 439 if (len < sizeof(struct proposal_payload)) { 440 printf(" [|payload]"); 441 return; 442 } 443 444 printf(" proposal: %d proto: %s spisz: %d xforms: %d", 445 pp->nprop, (pp->proto < (sizeof ike / sizeof ike[0]) ? 446 ike[pp->proto] : "(unknown)"), pp->spi_size, pp->nspis); 447 448 xform_proto = pp->proto; 449 450 if (pp->spi_size) { 451 if ((pp->spi + pp->spi_size) > (buf + len)) { 452 printf(" [|payload]"); 453 return; 454 } 455 if (pp->proto == PROTO_IPCOMP) 456 printf(" CPI: 0x"); 457 else 458 printf(" SPI: 0x"); 459 for (i = 0; i < pp->spi_size; i++) 460 printf("%02x", pp->spi[i]); 461 } 462 463 /* Reset to sane value. */ 464 if (pp->proto == PROTO_ISAKMP) 465 doi = ISAKMP_DOI; 466 else 467 doi = IPSEC_DOI; 468 469 if (pp->nspis > 0) 470 ike_pl_print(PAYLOAD_TRANSFORM, pp->spi + pp->spi_size, doi); 471 } 472 473 void 474 ike_pl_ke_print (u_int8_t *buf, int len, u_int8_t doi) 475 { 476 if (len < sizeof(struct ke_payload)) { 477 printf(" [|payload]"); 478 return; 479 } 480 481 if (doi != IPSEC_DOI) 482 return; 483 484 /* XXX ... */ 485 } 486 487 void 488 ipsec_id_print (u_int8_t *buf, int len, u_int8_t doi) 489 { 490 struct id_payload *ip = (struct id_payload *)buf; 491 static const char *idtypes[] = IPSEC_ID_TYPE_INITIALIZER; 492 char ntop_buf[INET6_ADDRSTRLEN]; 493 struct in_addr in; 494 u_int8_t *p; 495 496 if (len < sizeof (struct id_payload)) { 497 printf(" [|payload]"); 498 return; 499 } 500 501 if (doi != ISAKMP_DOI) 502 return; 503 504 /* Don't print proto+port unless actually used */ 505 if (ip->id_data[0] | ip->id_data[1] | ip->id_data[2]) 506 printf(" proto: %d port: %d", ip->id_data[0], 507 (ip->id_data[1] << 8) + ip->id_data[2]); 508 509 printf(" type: %s = ", ip->type < (sizeof idtypes/sizeof idtypes[0]) ? 510 idtypes[ip->type] : "<unknown>"); 511 512 switch (ip->type) { 513 case IPSEC_ID_IPV4_ADDR: 514 if ((ip->data + sizeof in) > (buf + len)) { 515 printf(" [|payload]"); 516 return; 517 } 518 memcpy (&in.s_addr, ip->data, sizeof in); 519 printf("%s", inet_ntoa (in)); 520 break; 521 522 case IPSEC_ID_IPV4_ADDR_SUBNET: 523 case IPSEC_ID_IPV4_ADDR_RANGE: 524 if ((ip->data + 2 * (sizeof in)) > (buf + len)) { 525 printf(" [|payload]"); 526 return; 527 } 528 memcpy (&in.s_addr, ip->data, sizeof in); 529 printf("%s%s", inet_ntoa (in), 530 ip->type == IPSEC_ID_IPV4_ADDR_SUBNET ? "/" : "-"); 531 memcpy (&in.s_addr, ip->data + sizeof in, sizeof in); 532 printf("%s", inet_ntoa (in)); 533 break; 534 535 case IPSEC_ID_IPV6_ADDR: 536 if ((ip->data + sizeof ntop_buf) > (buf + len)) { 537 printf(" [|payload]"); 538 return; 539 } 540 printf("%s", inet_ntop (AF_INET6, ip->data, ntop_buf, 541 sizeof ntop_buf)); 542 break; 543 544 case IPSEC_ID_IPV6_ADDR_SUBNET: 545 case IPSEC_ID_IPV6_ADDR_RANGE: 546 if ((ip->data + 2 * sizeof ntop_buf) > (buf + len)) { 547 printf(" [|payload]"); 548 return; 549 } 550 printf("%s%s", inet_ntop (AF_INET6, ip->data, ntop_buf, 551 sizeof ntop_buf), 552 ip->type == IPSEC_ID_IPV6_ADDR_SUBNET ? "/" : "-"); 553 printf("%s", inet_ntop (AF_INET6, ip->data + sizeof ntop_buf, 554 ntop_buf, sizeof ntop_buf)); 555 break; 556 557 case IPSEC_ID_FQDN: 558 case IPSEC_ID_USER_FQDN: 559 printf("\""); 560 for (p = ip->data; (int)(p - buf) < len; p++) 561 printf("%c",(isprint(*p) ? *p : '.')); 562 printf("\""); 563 break; 564 565 case IPSEC_ID_DER_ASN1_DN: 566 case IPSEC_ID_DER_ASN1_GN: 567 case IPSEC_ID_KEY_ID: 568 default: 569 printf("\"(not shown)\""); 570 break; 571 } 572 } 573 574 void 575 ike_pl_delete_print (u_int8_t *buf, int len) 576 { 577 struct delete_payload *dp = (struct delete_payload *)buf; 578 u_int32_t doi; 579 u_int16_t s, nspis; 580 u_int8_t *data; 581 582 if (len < sizeof (struct delete_payload)) { 583 printf(" [|payload]"); 584 return; 585 } 586 587 doi = ntohl(dp->doi); 588 nspis = ntohs(dp->nspis); 589 590 if (doi != ISAKMP_DOI && doi != IPSEC_DOI) { 591 printf(" (unknown DOI)"); 592 return; 593 } 594 595 printf(" DOI: %u(%s) proto: %s nspis: %u", doi, 596 doi == ISAKMP_DOI ? "ISAKMP" : "IPSEC", 597 dp->proto < (sizeof ike / sizeof ike[0]) ? ike[dp->proto] : 598 "(unknown)", nspis); 599 600 if ((dp->spi + nspis * dp->spi_size) > (buf + len)) { 601 printf(" [|payload]"); 602 return; 603 } 604 605 for (s = 0; s < nspis; s++) { 606 data = dp->spi + s * dp->spi_size; 607 if (dp->spi_size == 16) 608 printf("\n\t%scookie: %s", ike_tab_offset(), 609 ike_get_cookie(&data[0], &data[8])); 610 else 611 printf("\n\t%sSPI: 0x%08x", ike_tab_offset(), 612 data[0]<<24 | data[1]<<16 | data[2]<<8 | data[3]); 613 } 614 } 615 616 void 617 ike_pl_notification_print (u_int8_t *buf, int len) 618 { 619 static const char *nftypes[] = IKE_NOTIFY_TYPES_INITIALIZER; 620 struct notification_payload *np = (struct notification_payload *)buf; 621 u_int32_t *replay, *seq; 622 u_int32_t doi; 623 u_int16_t type; 624 u_int8_t *attr; 625 626 if (len < sizeof (struct notification_payload)) { 627 printf(" [|payload]"); 628 return; 629 } 630 631 doi = ntohl (np->doi); 632 type = ntohs (np->type); 633 634 if (doi != ISAKMP_DOI && doi != IPSEC_DOI) { 635 printf(" (unknown DOI)"); 636 return; 637 } 638 639 printf("\n\t%snotification: ", ike_tab_offset()); 640 641 if (type > 0 && type < (sizeof nftypes / sizeof nftypes[0])) { 642 printf("%s", nftypes[type]); 643 return; 644 } 645 switch (type) { 646 647 case NOTIFY_IPSEC_RESPONDER_LIFETIME: 648 printf("RESPONDER LIFETIME "); 649 if (np->spi_size == 16) 650 printf("(%s)", ike_get_cookie (&np->data[0], 651 &np->data[8])); 652 else 653 printf("SPI: 0x%08x", np->data[0]<<24 | 654 np->data[1]<<16 | np->data[2]<<8 | np->data[3]); 655 attr = &np->data[np->spi_size]; 656 ike_tab_level++; 657 while ((int)(attr - buf) < len - 4) /* Skip last 'NONE' attr */ 658 attr += ike_attribute_print(attr, IPSEC_DOI, 659 len - (attr-buf)); 660 ike_tab_level--; 661 break; 662 663 case NOTIFY_IPSEC_REPLAY_STATUS: 664 replay = (u_int32_t *)&np->data[np->spi_size]; 665 printf("REPLAY STATUS [%sabled] ", *replay ? "en" : "dis"); 666 if (np->spi_size == 16) 667 printf("(%s)", ike_get_cookie (&np->data[0], 668 &np->data[8])); 669 else 670 printf("SPI: 0x%08x", np->data[0]<<24 | 671 np->data[1]<<16 | np->data[2]<<8 | np->data[3]); 672 break; 673 674 case NOTIFY_IPSEC_INITIAL_CONTACT: 675 printf("INITIAL CONTACT (%s)", ike_get_cookie (&np->data[0], 676 &np->data[8])); 677 break; 678 679 case NOTIFY_STATUS_DPD_R_U_THERE: 680 case NOTIFY_STATUS_DPD_R_U_THERE_ACK: 681 printf("STATUS_DPD_R_U_THERE%s ", 682 type == NOTIFY_STATUS_DPD_R_U_THERE ? "" : "_ACK"); 683 if (np->spi_size != 16 || 684 len < sizeof(struct notification_payload) + 685 sizeof(u_int32_t)) 686 printf("[bad notify]"); 687 else { 688 seq = (u_int32_t *)&np->data[np->spi_size]; 689 printf("seq %u", ntohl(*seq)); 690 } 691 break; 692 693 694 default: 695 printf("%d (unknown)", type); 696 break; 697 } 698 } 699 700 void 701 ike_pl_vendor_print (u_int8_t *buf, int len, u_int8_t doi) 702 { 703 struct vendor_payload *vp = (struct vendor_payload *)buf; 704 u_int8_t *p; 705 int i; 706 707 if (len < sizeof(struct vendor_payload)) { 708 printf(" [|payload]"); 709 return; 710 } 711 712 for (i = 0; i < sizeof vendor_ids / sizeof vendor_ids[0]; i ++) 713 if (memcmp(vp->vid, vendor_ids[i].vid, 714 vendor_ids[i].len) == 0) { 715 printf (" (supports %s)", vendor_ids[i].name); 716 return; 717 } 718 719 if (doi != IPSEC_DOI) 720 return; 721 722 printf(" \""); 723 for (p = vp->vid; (int)(p - buf) < len; p++) 724 printf("%c", (isprint(*p) ? *p : '.')); 725 printf("\""); 726 } 727 728 /* IKE mode-config. */ 729 int 730 ike_cfg_attribute_print (u_int8_t *buf, int attr_type, int maxlen) 731 { 732 static char *attrs[] = IKE_CFG_ATTRIBUTE_INITIALIZER; 733 char ntop_buf[INET6_ADDRSTRLEN]; 734 struct in_addr in; 735 736 u_int8_t af = buf[0] >> 7; 737 u_int16_t type = (buf[0] & 0x7f) << 8 | buf[1]; 738 u_int16_t len = af ? 2 : buf[2] << 8 | buf[3], p; 739 u_int8_t *val = af ? buf + 2 : buf + 4; 740 741 printf("\n\t%sattribute %s = ", ike_tab_offset(), 742 type < (sizeof attrs / sizeof attrs[0]) ? attrs[type] : 743 "<unknown>"); 744 745 if ((af == 1 && maxlen < 4) || 746 (af == 0 && maxlen < (len + 4))) { 747 printf("\n\t%s[|attr]", ike_tab_offset()); 748 return maxlen; 749 } 750 751 /* XXX The 2nd term is for bug compatibility with PGPnet. */ 752 if (len == 0 || (af && !val[0] && !val[1])) { 753 printf("<none>"); 754 return 4; 755 } 756 757 /* XXX Generally lengths are not checked well below. */ 758 switch (type) { 759 case IKE_CFG_ATTR_INTERNAL_IP4_ADDRESS: 760 case IKE_CFG_ATTR_INTERNAL_IP4_NETMASK: 761 case IKE_CFG_ATTR_INTERNAL_IP4_DNS: 762 case IKE_CFG_ATTR_INTERNAL_IP4_NBNS: 763 case IKE_CFG_ATTR_INTERNAL_IP4_DHCP: 764 memcpy (&in.s_addr, val, sizeof in); 765 printf("%s", inet_ntoa (in)); 766 break; 767 768 case IKE_CFG_ATTR_INTERNAL_IP6_ADDRESS: 769 case IKE_CFG_ATTR_INTERNAL_IP6_NETMASK: 770 case IKE_CFG_ATTR_INTERNAL_IP6_DNS: 771 case IKE_CFG_ATTR_INTERNAL_IP6_NBNS: 772 case IKE_CFG_ATTR_INTERNAL_IP6_DHCP: 773 printf("%s", inet_ntop (AF_INET6, val, ntop_buf, 774 sizeof ntop_buf)); 775 break; 776 777 case IKE_CFG_ATTR_INTERNAL_IP4_SUBNET: 778 memcpy(&in.s_addr, val, sizeof in); 779 printf("%s/", inet_ntoa (in)); 780 memcpy(&in.s_addr, val + sizeof in, sizeof in); 781 printf("%s", inet_ntoa (in)); 782 break; 783 784 case IKE_CFG_ATTR_INTERNAL_IP6_SUBNET: 785 printf("%s/%u", inet_ntop (AF_INET6, val, ntop_buf, 786 sizeof ntop_buf), val[16]); 787 break; 788 789 case IKE_CFG_ATTR_INTERNAL_ADDRESS_EXPIRY: 790 printf("%u seconds", 791 val[0] << 24 | val[1] << 16 | val[2] << 8 | val[3]); 792 break; 793 794 case IKE_CFG_ATTR_APPLICATION_VERSION: 795 for (p = 0; p < len; p++) 796 printf("%c", isprint(val[p]) ? val[p] : '.'); 797 break; 798 799 case IKE_CFG_ATTR_SUPPORTED_ATTRIBUTES: 800 printf("<%d attributes>", len / 2); 801 ike_tab_level++; 802 for (p = 0; p < len; p += 2) { 803 type = (val[p] << 8 | val[p + 1]) & 0x7fff; 804 printf("\n\t%s%s", ike_tab_offset(), 805 type < (sizeof attrs/sizeof attrs[0]) ? 806 attrs[type] : "<unknown>"); 807 } 808 ike_tab_level--; 809 break; 810 811 default: 812 break; 813 } 814 return af ? 4 : len + 4; 815 } 816 817 void 818 ike_pl_attribute_print (u_int8_t *buf, int len) 819 { 820 struct attribute_payload *ap = (struct attribute_payload *)buf; 821 static const char *pl_attr[] = IKE_CFG_ATTRIBUTE_TYPE_INITIALIZER; 822 u_int8_t *attr = buf + sizeof(struct attribute_payload); 823 824 if (len < sizeof(struct attribute_payload)) { 825 printf(" [|payload]"); 826 return; 827 } 828 829 printf(" type: %s Id: %d", 830 ap->type < (sizeof pl_attr/sizeof pl_attr[0]) ? pl_attr[ap->type] : 831 "<unknown>", ap->id); 832 833 while ((int)(attr - buf) < len) 834 attr += ike_cfg_attribute_print(attr, ap->type, 835 len - (attr - buf)); 836 } 837 838 void 839 ike_pl_print (u_int8_t type, u_int8_t *buf, u_int8_t doi) 840 { 841 static const char *pltypes[] = IKE_PAYLOAD_TYPES_INITIALIZER; 842 static const char *plprivtypes[] = 843 IKE_PRIVATE_PAYLOAD_TYPES_INITIALIZER; 844 u_int8_t next_type; 845 u_int16_t this_len; 846 847 if (&buf[4] > snapend) { 848 goto pltrunc; 849 } 850 851 next_type = buf[0]; 852 this_len = buf[2]<<8 | buf[3]; 853 854 if (type < PAYLOAD_PRIVATE_MIN || type >= PAYLOAD_PRIVATE_MAX) 855 printf("\n\t%spayload: %s len: %hu", ike_tab_offset(), 856 (type < (sizeof pltypes/sizeof pltypes[0]) ? 857 pltypes[type] : "<unknown>"), this_len); 858 else 859 printf("\n\t%spayload: %s len: %hu", ike_tab_offset(), 860 plprivtypes[type - PAYLOAD_PRIVATE_MIN], this_len); 861 862 if ((type < PAYLOAD_RESERVED_MIN && 863 this_len < min_payload_lengths[type]) || this_len == 0) 864 goto pltrunc; 865 866 if ((type > PAYLOAD_PRIVATE_MIN && type < PAYLOAD_PRIVATE_MAX && 867 this_len < min_priv_payload_lengths[type - PAYLOAD_PRIVATE_MIN]) || 868 this_len == 0) 869 goto pltrunc; 870 871 if (buf + this_len > snapend) 872 goto pltrunc; 873 874 ike_tab_level++; 875 switch (type) { 876 case PAYLOAD_NONE: 877 return; 878 879 case PAYLOAD_SA: 880 ike_pl_sa_print(buf, this_len); 881 break; 882 883 case PAYLOAD_PROPOSAL: 884 ike_pl_proposal_print(buf, this_len, doi); 885 break; 886 887 case PAYLOAD_TRANSFORM: 888 ike_pl_transform_print(buf, this_len, doi); 889 break; 890 891 case PAYLOAD_KE: 892 ike_pl_ke_print(buf, this_len, doi); 893 break; 894 895 case PAYLOAD_ID: 896 /* Should only happen with IPsec DOI */ 897 ipsec_id_print(buf, this_len, doi); 898 break; 899 900 case PAYLOAD_CERT: 901 case PAYLOAD_CERTREQUEST: 902 case PAYLOAD_HASH: 903 case PAYLOAD_SIG: 904 case PAYLOAD_NONCE: 905 break; 906 907 case PAYLOAD_DELETE: 908 ike_pl_delete_print(buf, this_len); 909 break; 910 911 case PAYLOAD_NOTIFICATION: 912 ike_pl_notification_print(buf, this_len); 913 break; 914 915 case PAYLOAD_VENDOR: 916 ike_pl_vendor_print(buf, this_len, doi); 917 break; 918 919 case PAYLOAD_ATTRIBUTE: 920 ike_pl_attribute_print(buf, this_len); 921 break; 922 923 case PAYLOAD_SAK: 924 case PAYLOAD_SAT: 925 case PAYLOAD_KD: 926 case PAYLOAD_SEQ: 927 case PAYLOAD_POP: 928 case PAYLOAD_NAT_D: 929 case PAYLOAD_NAT_OA: 930 case PAYLOAD_NAT_D_DRAFT: 931 case PAYLOAD_NAT_OA_DRAFT: 932 break; 933 934 default: 935 break; 936 } 937 ike_tab_level--; 938 939 if (next_type) /* Recurse over next payload */ 940 ike_pl_print(next_type, buf + this_len, doi); 941 942 return; 943 944 pltrunc: 945 if (doi == ISAKMP_DOI) 946 fputs(" [|isakmp]", stdout); 947 else 948 fputs(" [|ipsec]", stdout); 949 } 950