1 /* 2 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * OSPF support contributed by Jeffrey Honig (jch (at) mitchell.cit.cornell.edu) 22 */ 23 24 #define NETDISSECT_REWORKED 25 #ifdef HAVE_CONFIG_H 26 #include "config.h" 27 #endif 28 29 #include <tcpdump-stdinc.h> 30 31 #include "interface.h" 32 #include "addrtoname.h" 33 #include "extract.h" 34 #include "gmpls.h" 35 36 #include "ospf.h" 37 38 static const char tstr[] = " [|ospf2]"; 39 40 static const struct tok ospf_option_values[] = { 41 { OSPF_OPTION_T, "MultiTopology" }, /* draft-ietf-ospf-mt-09 */ 42 { OSPF_OPTION_E, "External" }, 43 { OSPF_OPTION_MC, "Multicast" }, 44 { OSPF_OPTION_NP, "NSSA" }, 45 { OSPF_OPTION_L, "LLS" }, 46 { OSPF_OPTION_DC, "Demand Circuit" }, 47 { OSPF_OPTION_O, "Opaque" }, 48 { OSPF_OPTION_DN, "Up/Down" }, 49 { 0, NULL } 50 }; 51 52 static const struct tok ospf_authtype_values[] = { 53 { OSPF_AUTH_NONE, "none" }, 54 { OSPF_AUTH_SIMPLE, "simple" }, 55 { OSPF_AUTH_MD5, "MD5" }, 56 { 0, NULL } 57 }; 58 59 static const struct tok ospf_rla_flag_values[] = { 60 { RLA_FLAG_B, "ABR" }, 61 { RLA_FLAG_E, "ASBR" }, 62 { RLA_FLAG_W1, "Virtual" }, 63 { RLA_FLAG_W2, "W2" }, 64 { 0, NULL } 65 }; 66 67 static const struct tok type2str[] = { 68 { OSPF_TYPE_UMD, "UMD" }, 69 { OSPF_TYPE_HELLO, "Hello" }, 70 { OSPF_TYPE_DD, "Database Description" }, 71 { OSPF_TYPE_LS_REQ, "LS-Request" }, 72 { OSPF_TYPE_LS_UPDATE, "LS-Update" }, 73 { OSPF_TYPE_LS_ACK, "LS-Ack" }, 74 { 0, NULL } 75 }; 76 77 static const struct tok lsa_values[] = { 78 { LS_TYPE_ROUTER, "Router" }, 79 { LS_TYPE_NETWORK, "Network" }, 80 { LS_TYPE_SUM_IP, "Summary" }, 81 { LS_TYPE_SUM_ABR, "ASBR Summary" }, 82 { LS_TYPE_ASE, "External" }, 83 { LS_TYPE_GROUP, "Multicast Group" }, 84 { LS_TYPE_NSSA, "NSSA" }, 85 { LS_TYPE_OPAQUE_LL, "Link Local Opaque" }, 86 { LS_TYPE_OPAQUE_AL, "Area Local Opaque" }, 87 { LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" }, 88 { 0, NULL } 89 }; 90 91 static const struct tok ospf_dd_flag_values[] = { 92 { OSPF_DB_INIT, "Init" }, 93 { OSPF_DB_MORE, "More" }, 94 { OSPF_DB_MASTER, "Master" }, 95 { OSPF_DB_RESYNC, "OOBResync" }, 96 { 0, NULL } 97 }; 98 99 static const struct tok lsa_opaque_values[] = { 100 { LS_OPAQUE_TYPE_TE, "Traffic Engineering" }, 101 { LS_OPAQUE_TYPE_GRACE, "Graceful restart" }, 102 { LS_OPAQUE_TYPE_RI, "Router Information" }, 103 { 0, NULL } 104 }; 105 106 static const struct tok lsa_opaque_te_tlv_values[] = { 107 { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" }, 108 { LS_OPAQUE_TE_TLV_LINK, "Link" }, 109 { 0, NULL } 110 }; 111 112 static const struct tok lsa_opaque_te_link_tlv_subtlv_values[] = { 113 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" }, 114 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" }, 115 { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" }, 116 { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" }, 117 { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" }, 118 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" }, 119 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" }, 120 { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" }, 121 { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" }, 122 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" }, 123 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" }, 124 { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" }, 125 { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" }, 126 { LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS, "Bandwidth Constraints" }, 127 { 0, NULL } 128 }; 129 130 static const struct tok lsa_opaque_grace_tlv_values[] = { 131 { LS_OPAQUE_GRACE_TLV_PERIOD, "Grace Period" }, 132 { LS_OPAQUE_GRACE_TLV_REASON, "Graceful restart Reason" }, 133 { LS_OPAQUE_GRACE_TLV_INT_ADDRESS, "IPv4 interface address" }, 134 { 0, NULL } 135 }; 136 137 static const struct tok lsa_opaque_grace_tlv_reason_values[] = { 138 { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN, "Unknown" }, 139 { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART, "Software Restart" }, 140 { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE, "Software Reload/Upgrade" }, 141 { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH, "Control Processor Switch" }, 142 { 0, NULL } 143 }; 144 145 static const struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = { 146 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" }, 147 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" }, 148 { 0, NULL } 149 }; 150 151 static const struct tok lsa_opaque_ri_tlv_values[] = { 152 { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" }, 153 { 0, NULL } 154 }; 155 156 static const struct tok lsa_opaque_ri_tlv_cap_values[] = { 157 { 1, "Reserved" }, 158 { 2, "Reserved" }, 159 { 4, "Reserved" }, 160 { 8, "Reserved" }, 161 { 16, "graceful restart capable" }, 162 { 32, "graceful restart helper" }, 163 { 64, "Stub router support" }, 164 { 128, "Traffic engineering" }, 165 { 256, "p2p over LAN" }, 166 { 512, "path computation server" }, 167 { 0, NULL } 168 }; 169 170 static const struct tok ospf_lls_tlv_values[] = { 171 { OSPF_LLS_EO, "Extended Options" }, 172 { OSPF_LLS_MD5, "MD5 Authentication" }, 173 { 0, NULL } 174 }; 175 176 static const struct tok ospf_lls_eo_options[] = { 177 { OSPF_LLS_EO_LR, "LSDB resync" }, 178 { OSPF_LLS_EO_RS, "Restart" }, 179 { 0, NULL } 180 }; 181 182 int 183 ospf_print_grace_lsa(netdissect_options *ndo, 184 const uint8_t *tptr, u_int ls_length) 185 { 186 u_int tlv_type, tlv_length; 187 188 189 while (ls_length > 0) { 190 ND_TCHECK2(*tptr, 4); 191 if (ls_length < 4) { 192 ND_PRINT((ndo, "\n\t Remaining LS length %u < 4", ls_length)); 193 return -1; 194 } 195 tlv_type = EXTRACT_16BITS(tptr); 196 tlv_length = EXTRACT_16BITS(tptr+2); 197 tptr+=4; 198 ls_length-=4; 199 200 ND_PRINT((ndo, "\n\t %s TLV (%u), length %u, value: ", 201 tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type), 202 tlv_type, 203 tlv_length)); 204 205 if (tlv_length > ls_length) { 206 ND_PRINT((ndo, "\n\t Bogus length %u > %u", tlv_length, 207 ls_length)); 208 return -1; 209 } 210 211 /* Infinite loop protection. */ 212 if (tlv_type == 0 || tlv_length ==0) { 213 return -1; 214 } 215 216 ND_TCHECK2(*tptr, tlv_length); 217 switch(tlv_type) { 218 219 case LS_OPAQUE_GRACE_TLV_PERIOD: 220 if (tlv_length != 4) { 221 ND_PRINT((ndo, "\n\t Bogus length %u != 4", tlv_length)); 222 return -1; 223 } 224 ND_PRINT((ndo, "%us", EXTRACT_32BITS(tptr))); 225 break; 226 227 case LS_OPAQUE_GRACE_TLV_REASON: 228 if (tlv_length != 1) { 229 ND_PRINT((ndo, "\n\t Bogus length %u != 1", tlv_length)); 230 return -1; 231 } 232 ND_PRINT((ndo, "%s (%u)", 233 tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", *tptr), 234 *tptr)); 235 break; 236 237 case LS_OPAQUE_GRACE_TLV_INT_ADDRESS: 238 if (tlv_length != 4) { 239 ND_PRINT((ndo, "\n\t Bogus length %u != 4", tlv_length)); 240 return -1; 241 } 242 ND_PRINT((ndo, "%s", ipaddr_string(ndo, tptr))); 243 break; 244 245 default: 246 if (ndo->ndo_vflag <= 1) { 247 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 248 return -1; 249 } 250 break; 251 252 } 253 /* in OSPF everything has to be 32-bit aligned, including TLVs */ 254 if (tlv_length%4 != 0) 255 tlv_length+=4-(tlv_length%4); 256 ls_length-=tlv_length; 257 tptr+=tlv_length; 258 } 259 260 return 0; 261 trunc: 262 return -1; 263 } 264 265 int 266 ospf_print_te_lsa(netdissect_options *ndo, 267 const uint8_t *tptr, u_int ls_length) 268 { 269 u_int tlv_type, tlv_length, subtlv_type, subtlv_length; 270 u_int priority_level, te_class, count_srlg; 271 union { /* int to float conversion buffer for several subTLVs */ 272 float f; 273 uint32_t i; 274 } bw; 275 276 while (ls_length != 0) { 277 ND_TCHECK2(*tptr, 4); 278 if (ls_length < 4) { 279 ND_PRINT((ndo, "\n\t Remaining LS length %u < 4", ls_length)); 280 return -1; 281 } 282 tlv_type = EXTRACT_16BITS(tptr); 283 tlv_length = EXTRACT_16BITS(tptr+2); 284 tptr+=4; 285 ls_length-=4; 286 287 ND_PRINT((ndo, "\n\t %s TLV (%u), length: %u", 288 tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type), 289 tlv_type, 290 tlv_length)); 291 292 if (tlv_length > ls_length) { 293 ND_PRINT((ndo, "\n\t Bogus length %u > %u", tlv_length, 294 ls_length)); 295 return -1; 296 } 297 298 /* Infinite loop protection. */ 299 if (tlv_type == 0 || tlv_length ==0) { 300 return -1; 301 } 302 303 switch(tlv_type) { 304 case LS_OPAQUE_TE_TLV_LINK: 305 while (tlv_length >= sizeof(subtlv_type) + sizeof(subtlv_length)) { 306 if (tlv_length < 4) { 307 ND_PRINT((ndo, "\n\t Remaining TLV length %u < 4", 308 tlv_length)); 309 return -1; 310 } 311 ND_TCHECK2(*tptr, 4); 312 subtlv_type = EXTRACT_16BITS(tptr); 313 subtlv_length = EXTRACT_16BITS(tptr+2); 314 tptr+=4; 315 tlv_length-=4; 316 317 ND_PRINT((ndo, "\n\t %s subTLV (%u), length: %u", 318 tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type), 319 subtlv_type, 320 subtlv_length)); 321 322 ND_TCHECK2(*tptr, subtlv_length); 323 switch(subtlv_type) { 324 case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP: 325 ND_PRINT((ndo, ", 0x%08x", EXTRACT_32BITS(tptr))); 326 break; 327 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID: 328 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID: 329 ND_PRINT((ndo, ", %s (0x%08x)", 330 ipaddr_string(ndo, tptr), 331 EXTRACT_32BITS(tptr))); 332 if (subtlv_length == 8) /* rfc4203 */ 333 ND_PRINT((ndo, ", %s (0x%08x)", 334 ipaddr_string(ndo, tptr+4), 335 EXTRACT_32BITS(tptr + 4))); 336 break; 337 case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP: 338 case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP: 339 ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr))); 340 break; 341 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW: 342 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW: 343 bw.i = EXTRACT_32BITS(tptr); 344 ND_PRINT((ndo, ", %.3f Mbps", bw.f * 8 / 1000000)); 345 break; 346 case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW: 347 for (te_class = 0; te_class < 8; te_class++) { 348 bw.i = EXTRACT_32BITS(tptr+te_class*4); 349 ND_PRINT((ndo, "\n\t\tTE-Class %u: %.3f Mbps", 350 te_class, 351 bw.f * 8 / 1000000)); 352 } 353 break; 354 case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS: 355 ND_PRINT((ndo, "\n\t\tBandwidth Constraints Model ID: %s (%u)", 356 tok2str(diffserv_te_bc_values, "unknown", *tptr), 357 *tptr)); 358 /* decode BCs until the subTLV ends */ 359 for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) { 360 bw.i = EXTRACT_32BITS(tptr+4+te_class*4); 361 ND_PRINT((ndo, "\n\t\t Bandwidth constraint CT%u: %.3f Mbps", 362 te_class, 363 bw.f * 8 / 1000000)); 364 } 365 break; 366 case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC: 367 ND_PRINT((ndo, ", Metric %u", EXTRACT_32BITS(tptr))); 368 break; 369 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE: 370 ND_PRINT((ndo, ", %s, Priority %u", 371 bittok2str(gmpls_link_prot_values, "none", *tptr), 372 *(tptr + 1))); 373 break; 374 case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR: 375 ND_PRINT((ndo, "\n\t\tInterface Switching Capability: %s", 376 tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)))); 377 ND_PRINT((ndo, "\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:", 378 tok2str(gmpls_encoding_values, "Unknown", *(tptr + 1)))); 379 for (priority_level = 0; priority_level < 8; priority_level++) { 380 bw.i = EXTRACT_32BITS(tptr+4+(priority_level*4)); 381 ND_PRINT((ndo, "\n\t\t priority level %d: %.3f Mbps", 382 priority_level, 383 bw.f * 8 / 1000000)); 384 } 385 break; 386 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE: 387 ND_PRINT((ndo, ", %s (%u)", 388 tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",*tptr), 389 *tptr)); 390 break; 391 392 case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP: 393 count_srlg = subtlv_length / 4; 394 if (count_srlg != 0) 395 ND_PRINT((ndo, "\n\t\t Shared risk group: ")); 396 while (count_srlg > 0) { 397 bw.i = EXTRACT_32BITS(tptr); 398 ND_PRINT((ndo, "%d", bw.i)); 399 tptr+=4; 400 count_srlg--; 401 if (count_srlg > 0) 402 ND_PRINT((ndo, ", ")); 403 } 404 break; 405 406 default: 407 if (ndo->ndo_vflag <= 1) { 408 if (!print_unknown_data(ndo, tptr, "\n\t\t", subtlv_length)) 409 return -1; 410 } 411 break; 412 } 413 /* in OSPF everything has to be 32-bit aligned, including subTLVs */ 414 if (subtlv_length%4 != 0) 415 subtlv_length+=4-(subtlv_length%4); 416 417 tlv_length-=subtlv_length; 418 tptr+=subtlv_length; 419 420 } 421 break; 422 423 case LS_OPAQUE_TE_TLV_ROUTER: 424 if (tlv_length < 4) { 425 ND_PRINT((ndo, "\n\t TLV length %u < 4", tlv_length)); 426 return -1; 427 } 428 ND_TCHECK2(*tptr, 4); 429 ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr))); 430 break; 431 432 default: 433 if (ndo->ndo_vflag <= 1) { 434 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 435 return -1; 436 } 437 break; 438 } 439 /* in OSPF everything has to be 32-bit aligned, including TLVs */ 440 if (tlv_length%4 != 0) 441 tlv_length+=4-(tlv_length%4); 442 ls_length-=tlv_length; 443 tptr+=tlv_length; 444 } 445 return 0; 446 trunc: 447 return -1; 448 } 449 450 static int 451 ospf_print_lshdr(netdissect_options *ndo, 452 register const struct lsa_hdr *lshp) 453 { 454 u_int ls_length; 455 456 ND_TCHECK(lshp->ls_length); 457 ls_length = EXTRACT_16BITS(&lshp->ls_length); 458 if (ls_length < sizeof(struct lsa_hdr)) { 459 ND_PRINT((ndo, "\n\t Bogus length %u < header (%lu)", ls_length, 460 (unsigned long)sizeof(struct lsa_hdr))); 461 return(-1); 462 } 463 464 ND_TCHECK(lshp->ls_seq); /* XXX - ls_length check checked this */ 465 ND_PRINT((ndo, "\n\t Advertising Router %s, seq 0x%08x, age %us, length %u", 466 ipaddr_string(ndo, &lshp->ls_router), 467 EXTRACT_32BITS(&lshp->ls_seq), 468 EXTRACT_16BITS(&lshp->ls_age), 469 ls_length - (u_int)sizeof(struct lsa_hdr))); 470 471 ND_TCHECK(lshp->ls_type); /* XXX - ls_length check checked this */ 472 switch (lshp->ls_type) { 473 /* the LSA header for opaque LSAs was slightly changed */ 474 case LS_TYPE_OPAQUE_LL: 475 case LS_TYPE_OPAQUE_AL: 476 case LS_TYPE_OPAQUE_DW: 477 ND_PRINT((ndo, "\n\t %s LSA (%d), Opaque-Type %s LSA (%u), Opaque-ID %u", 478 tok2str(lsa_values,"unknown",lshp->ls_type), 479 lshp->ls_type, 480 481 tok2str(lsa_opaque_values, 482 "unknown", 483 *(&lshp->un_lsa_id.opaque_field.opaque_type)), 484 *(&lshp->un_lsa_id.opaque_field.opaque_type), 485 EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id) 486 487 )); 488 break; 489 490 /* all other LSA types use regular style LSA headers */ 491 default: 492 ND_PRINT((ndo, "\n\t %s LSA (%d), LSA-ID: %s", 493 tok2str(lsa_values,"unknown",lshp->ls_type), 494 lshp->ls_type, 495 ipaddr_string(ndo, &lshp->un_lsa_id.lsa_id))); 496 break; 497 } 498 499 ND_TCHECK(lshp->ls_options); /* XXX - ls_length check checked this */ 500 ND_PRINT((ndo, "\n\t Options: [%s]", bittok2str(ospf_option_values, "none", lshp->ls_options))); 501 502 return (ls_length); 503 trunc: 504 return (-1); 505 } 506 507 /* draft-ietf-ospf-mt-09 */ 508 static const struct tok ospf_topology_values[] = { 509 { 0, "default " }, 510 { 1, "multicast " }, 511 { 2, "management " }, 512 { 0, NULL } 513 }; 514 515 /* 516 * Print all the per-topology metrics. 517 */ 518 static void 519 ospf_print_tos_metrics(netdissect_options *ndo, 520 const union un_tos *tos) 521 { 522 int metric_count; 523 int toscount; 524 525 toscount = tos->link.link_tos_count+1; 526 metric_count = 0; 527 528 /* 529 * All but the first metric contain a valid topology id. 530 */ 531 while (toscount) { 532 ND_PRINT((ndo, "\n\t\ttopology %s(%u), metric %u", 533 tok2str(ospf_topology_values, "", 534 metric_count ? tos->metrics.tos_type : 0), 535 metric_count ? tos->metrics.tos_type : 0, 536 EXTRACT_16BITS(&tos->metrics.tos_metric))); 537 metric_count++; 538 tos++; 539 toscount--; 540 } 541 } 542 543 /* 544 * Print a single link state advertisement. If truncated or if LSA length 545 * field is less than the length of the LSA header, return NULl, else 546 * return pointer to data past end of LSA. 547 */ 548 static const uint8_t * 549 ospf_print_lsa(netdissect_options *ndo, 550 register const struct lsa *lsap) 551 { 552 register const uint8_t *ls_end; 553 register const struct rlalink *rlp; 554 register const struct in_addr *ap; 555 register const struct aslametric *almp; 556 register const struct mcla *mcp; 557 register const uint32_t *lp; 558 register int j, tlv_type, tlv_length, topology; 559 register int ls_length; 560 const uint8_t *tptr; 561 562 tptr = (uint8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */ 563 ls_length = ospf_print_lshdr(ndo, &lsap->ls_hdr); 564 if (ls_length == -1) 565 return(NULL); 566 ls_end = (uint8_t *)lsap + ls_length; 567 ls_length -= sizeof(struct lsa_hdr); 568 569 switch (lsap->ls_hdr.ls_type) { 570 571 case LS_TYPE_ROUTER: 572 ND_TCHECK(lsap->lsa_un.un_rla.rla_flags); 573 ND_PRINT((ndo, "\n\t Router LSA Options: [%s]", 574 bittok2str(ospf_rla_flag_values, "none", lsap->lsa_un.un_rla.rla_flags))); 575 576 ND_TCHECK(lsap->lsa_un.un_rla.rla_count); 577 j = EXTRACT_16BITS(&lsap->lsa_un.un_rla.rla_count); 578 ND_TCHECK(lsap->lsa_un.un_rla.rla_link); 579 rlp = lsap->lsa_un.un_rla.rla_link; 580 while (j--) { 581 ND_TCHECK(*rlp); 582 switch (rlp->un_tos.link.link_type) { 583 584 case RLA_TYPE_VIRTUAL: 585 ND_PRINT((ndo, "\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s", 586 ipaddr_string(ndo, &rlp->link_id), 587 ipaddr_string(ndo, &rlp->link_data))); 588 break; 589 590 case RLA_TYPE_ROUTER: 591 ND_PRINT((ndo, "\n\t Neighbor Router-ID: %s, Interface Address: %s", 592 ipaddr_string(ndo, &rlp->link_id), 593 ipaddr_string(ndo, &rlp->link_data))); 594 break; 595 596 case RLA_TYPE_TRANSIT: 597 ND_PRINT((ndo, "\n\t Neighbor Network-ID: %s, Interface Address: %s", 598 ipaddr_string(ndo, &rlp->link_id), 599 ipaddr_string(ndo, &rlp->link_data))); 600 break; 601 602 case RLA_TYPE_STUB: 603 ND_PRINT((ndo, "\n\t Stub Network: %s, Mask: %s", 604 ipaddr_string(ndo, &rlp->link_id), 605 ipaddr_string(ndo, &rlp->link_data))); 606 break; 607 608 default: 609 ND_PRINT((ndo, "\n\t Unknown Router Link Type (%u)", 610 rlp->un_tos.link.link_type)); 611 return (ls_end); 612 } 613 614 ospf_print_tos_metrics(ndo, &rlp->un_tos); 615 616 rlp = (struct rlalink *)((u_char *)(rlp + 1) + 617 ((rlp->un_tos.link.link_tos_count) * sizeof(union un_tos))); 618 } 619 break; 620 621 case LS_TYPE_NETWORK: 622 ND_TCHECK(lsap->lsa_un.un_nla.nla_mask); 623 ND_PRINT((ndo, "\n\t Mask %s\n\t Connected Routers:", 624 ipaddr_string(ndo, &lsap->lsa_un.un_nla.nla_mask))); 625 ap = lsap->lsa_un.un_nla.nla_router; 626 while ((u_char *)ap < ls_end) { 627 ND_TCHECK(*ap); 628 ND_PRINT((ndo, "\n\t %s", ipaddr_string(ndo, ap))); 629 ++ap; 630 } 631 break; 632 633 case LS_TYPE_SUM_IP: 634 ND_TCHECK(lsap->lsa_un.un_nla.nla_mask); 635 ND_PRINT((ndo, "\n\t Mask %s", 636 ipaddr_string(ndo, &lsap->lsa_un.un_sla.sla_mask))); 637 ND_TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 638 lp = lsap->lsa_un.un_sla.sla_tosmetric; 639 while ((u_char *)lp < ls_end) { 640 register uint32_t ul; 641 642 ND_TCHECK(*lp); 643 ul = EXTRACT_32BITS(lp); 644 topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS; 645 ND_PRINT((ndo, "\n\t\ttopology %s(%u) metric %d", 646 tok2str(ospf_topology_values, "", topology), 647 topology, 648 ul & SLA_MASK_METRIC)); 649 ++lp; 650 } 651 break; 652 653 case LS_TYPE_SUM_ABR: 654 ND_TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 655 lp = lsap->lsa_un.un_sla.sla_tosmetric; 656 while ((u_char *)lp < ls_end) { 657 register uint32_t ul; 658 659 ND_TCHECK(*lp); 660 ul = EXTRACT_32BITS(lp); 661 topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS; 662 ND_PRINT((ndo, "\n\t\ttopology %s(%u) metric %d", 663 tok2str(ospf_topology_values, "", topology), 664 topology, 665 ul & SLA_MASK_METRIC)); 666 ++lp; 667 } 668 break; 669 670 case LS_TYPE_ASE: 671 case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */ 672 ND_TCHECK(lsap->lsa_un.un_nla.nla_mask); 673 ND_PRINT((ndo, "\n\t Mask %s", 674 ipaddr_string(ndo, &lsap->lsa_un.un_asla.asla_mask))); 675 676 ND_TCHECK(lsap->lsa_un.un_sla.sla_tosmetric); 677 almp = lsap->lsa_un.un_asla.asla_metric; 678 while ((u_char *)almp < ls_end) { 679 register uint32_t ul; 680 681 ND_TCHECK(almp->asla_tosmetric); 682 ul = EXTRACT_32BITS(&almp->asla_tosmetric); 683 topology = ((ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS); 684 ND_PRINT((ndo, "\n\t\ttopology %s(%u), type %d, metric", 685 tok2str(ospf_topology_values, "", topology), 686 topology, 687 (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1)); 688 if ((ul & ASLA_MASK_METRIC) == 0xffffff) 689 ND_PRINT((ndo, " infinite")); 690 else 691 ND_PRINT((ndo, " %d", (ul & ASLA_MASK_METRIC))); 692 693 ND_TCHECK(almp->asla_forward); 694 if (almp->asla_forward.s_addr) { 695 ND_PRINT((ndo, ", forward %s", ipaddr_string(ndo, &almp->asla_forward))); 696 } 697 ND_TCHECK(almp->asla_tag); 698 if (almp->asla_tag.s_addr) { 699 ND_PRINT((ndo, ", tag %s", ipaddr_string(ndo, &almp->asla_tag))); 700 } 701 ++almp; 702 } 703 break; 704 705 case LS_TYPE_GROUP: 706 /* Multicast extensions as of 23 July 1991 */ 707 mcp = lsap->lsa_un.un_mcla; 708 while ((u_char *)mcp < ls_end) { 709 ND_TCHECK(mcp->mcla_vid); 710 switch (EXTRACT_32BITS(&mcp->mcla_vtype)) { 711 712 case MCLA_VERTEX_ROUTER: 713 ND_PRINT((ndo, "\n\t Router Router-ID %s", 714 ipaddr_string(ndo, &mcp->mcla_vid))); 715 break; 716 717 case MCLA_VERTEX_NETWORK: 718 ND_PRINT((ndo, "\n\t Network Designated Router %s", 719 ipaddr_string(ndo, &mcp->mcla_vid))); 720 break; 721 722 default: 723 ND_PRINT((ndo, "\n\t unknown VertexType (%u)", 724 EXTRACT_32BITS(&mcp->mcla_vtype))); 725 break; 726 } 727 ++mcp; 728 } 729 break; 730 731 case LS_TYPE_OPAQUE_LL: /* fall through */ 732 case LS_TYPE_OPAQUE_AL: 733 case LS_TYPE_OPAQUE_DW: 734 735 switch (*(&lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) { 736 case LS_OPAQUE_TYPE_RI: 737 tptr = (uint8_t *)(&lsap->lsa_un.un_ri_tlv.type); 738 739 while (ls_length != 0) { 740 ND_TCHECK2(*tptr, 4); 741 if (ls_length < 4) { 742 ND_PRINT((ndo, "\n\t Remaining LS length %u < 4", ls_length)); 743 return(ls_end); 744 } 745 tlv_type = EXTRACT_16BITS(tptr); 746 tlv_length = EXTRACT_16BITS(tptr+2); 747 tptr+=4; 748 ls_length-=4; 749 750 ND_PRINT((ndo, "\n\t %s TLV (%u), length: %u, value: ", 751 tok2str(lsa_opaque_ri_tlv_values,"unknown",tlv_type), 752 tlv_type, 753 tlv_length)); 754 755 if (tlv_length > ls_length) { 756 ND_PRINT((ndo, "\n\t Bogus length %u > %u", tlv_length, 757 ls_length)); 758 return(ls_end); 759 } 760 ND_TCHECK2(*tptr, tlv_length); 761 switch(tlv_type) { 762 763 case LS_OPAQUE_RI_TLV_CAP: 764 if (tlv_length != 4) { 765 ND_PRINT((ndo, "\n\t Bogus length %u != 4", tlv_length)); 766 return(ls_end); 767 } 768 ND_PRINT((ndo, "Capabilities: %s", 769 bittok2str(lsa_opaque_ri_tlv_cap_values, "Unknown", EXTRACT_32BITS(tptr)))); 770 break; 771 default: 772 if (ndo->ndo_vflag <= 1) { 773 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 774 return(ls_end); 775 } 776 break; 777 778 } 779 tptr+=tlv_length; 780 ls_length-=tlv_length; 781 } 782 break; 783 784 case LS_OPAQUE_TYPE_GRACE: 785 if (ospf_print_grace_lsa(ndo, (uint8_t *)(&lsap->lsa_un.un_grace_tlv.type), 786 ls_length) == -1) { 787 return(ls_end); 788 } 789 break; 790 791 case LS_OPAQUE_TYPE_TE: 792 if (ospf_print_te_lsa(ndo, (uint8_t *)(&lsap->lsa_un.un_te_lsa_tlv.type), 793 ls_length) == -1) { 794 return(ls_end); 795 } 796 break; 797 798 default: 799 if (ndo->ndo_vflag <= 1) { 800 if (!print_unknown_data(ndo, (uint8_t *)lsap->lsa_un.un_unknown, 801 "\n\t ", ls_length)) 802 return(ls_end); 803 } 804 break; 805 } 806 } 807 808 /* do we want to see an additionally hexdump ? */ 809 if (ndo->ndo_vflag> 1) 810 if (!print_unknown_data(ndo, (uint8_t *)lsap->lsa_un.un_unknown, 811 "\n\t ", ls_length)) { 812 return(ls_end); 813 } 814 815 return (ls_end); 816 trunc: 817 return (NULL); 818 } 819 820 static int 821 ospf_decode_lls(netdissect_options *ndo, 822 register const struct ospfhdr *op, register u_int length) 823 { 824 register const u_char *dptr; 825 register const u_char *dataend; 826 register u_int length2; 827 register uint16_t lls_type, lls_len; 828 register uint32_t lls_flags; 829 830 switch (op->ospf_type) { 831 832 case OSPF_TYPE_HELLO: 833 if (!(op->ospf_hello.hello_options & OSPF_OPTION_L)) 834 return (0); 835 break; 836 837 case OSPF_TYPE_DD: 838 if (!(op->ospf_db.db_options & OSPF_OPTION_L)) 839 return (0); 840 break; 841 842 default: 843 return (0); 844 } 845 846 /* dig deeper if LLS data is available; see RFC4813 */ 847 length2 = EXTRACT_16BITS(&op->ospf_len); 848 dptr = (u_char *)op + length2; 849 dataend = (u_char *)op + length; 850 851 if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) { 852 dptr = dptr + op->ospf_authdata[3]; 853 length2 += op->ospf_authdata[3]; 854 } 855 if (length2 >= length) { 856 ND_PRINT((ndo, "\n\t[LLS truncated]")); 857 return (1); 858 } 859 ND_TCHECK2(*dptr, 2); 860 ND_PRINT((ndo, "\n\t LLS: checksum: 0x%04x", (u_int)EXTRACT_16BITS(dptr))); 861 862 dptr += 2; 863 ND_TCHECK2(*dptr, 2); 864 length2 = EXTRACT_16BITS(dptr); 865 ND_PRINT((ndo, ", length: %u", length2)); 866 867 dptr += 2; 868 ND_TCHECK(*dptr); 869 while (dptr < dataend) { 870 ND_TCHECK2(*dptr, 2); 871 lls_type = EXTRACT_16BITS(dptr); 872 ND_PRINT((ndo, "\n\t %s (%u)", 873 tok2str(ospf_lls_tlv_values,"Unknown TLV",lls_type), 874 lls_type)); 875 dptr += 2; 876 ND_TCHECK2(*dptr, 2); 877 lls_len = EXTRACT_16BITS(dptr); 878 ND_PRINT((ndo, ", length: %u", lls_len)); 879 dptr += 2; 880 switch (lls_type) { 881 882 case OSPF_LLS_EO: 883 if (lls_len != 4) { 884 ND_PRINT((ndo, " [should be 4]")); 885 lls_len = 4; 886 } 887 ND_TCHECK2(*dptr, 4); 888 lls_flags = EXTRACT_32BITS(dptr); 889 ND_PRINT((ndo, "\n\t Options: 0x%08x [%s]", lls_flags, 890 bittok2str(ospf_lls_eo_options, "?", lls_flags))); 891 892 break; 893 894 case OSPF_LLS_MD5: 895 if (lls_len != 20) { 896 ND_PRINT((ndo, " [should be 20]")); 897 lls_len = 20; 898 } 899 ND_TCHECK2(*dptr, 4); 900 ND_PRINT((ndo, "\n\t Sequence number: 0x%08x", EXTRACT_32BITS(dptr))); 901 break; 902 } 903 904 dptr += lls_len; 905 } 906 907 return (0); 908 trunc: 909 return (1); 910 } 911 912 static int 913 ospf_decode_v2(netdissect_options *ndo, 914 register const struct ospfhdr *op, register const u_char *dataend) 915 { 916 register const struct in_addr *ap; 917 register const struct lsr *lsrp; 918 register const struct lsa_hdr *lshp; 919 register const struct lsa *lsap; 920 register uint32_t lsa_count,lsa_count_max; 921 922 switch (op->ospf_type) { 923 924 case OSPF_TYPE_UMD: 925 /* 926 * Rob Coltun's special monitoring packets; 927 * do nothing 928 */ 929 break; 930 931 case OSPF_TYPE_HELLO: 932 ND_PRINT((ndo, "\n\tOptions [%s]", 933 bittok2str(ospf_option_values,"none",op->ospf_hello.hello_options))); 934 935 ND_TCHECK(op->ospf_hello.hello_deadint); 936 ND_PRINT((ndo, "\n\t Hello Timer %us, Dead Timer %us, Mask %s, Priority %u", 937 EXTRACT_16BITS(&op->ospf_hello.hello_helloint), 938 EXTRACT_32BITS(&op->ospf_hello.hello_deadint), 939 ipaddr_string(ndo, &op->ospf_hello.hello_mask), 940 op->ospf_hello.hello_priority)); 941 942 ND_TCHECK(op->ospf_hello.hello_dr); 943 if (op->ospf_hello.hello_dr.s_addr != 0) 944 ND_PRINT((ndo, "\n\t Designated Router %s", 945 ipaddr_string(ndo, &op->ospf_hello.hello_dr))); 946 947 ND_TCHECK(op->ospf_hello.hello_bdr); 948 if (op->ospf_hello.hello_bdr.s_addr != 0) 949 ND_PRINT((ndo, ", Backup Designated Router %s", 950 ipaddr_string(ndo, &op->ospf_hello.hello_bdr))); 951 952 ap = op->ospf_hello.hello_neighbor; 953 if ((u_char *)ap < dataend) 954 ND_PRINT((ndo, "\n\t Neighbor List:")); 955 while ((u_char *)ap < dataend) { 956 ND_TCHECK(*ap); 957 ND_PRINT((ndo, "\n\t %s", ipaddr_string(ndo, ap))); 958 ++ap; 959 } 960 break; /* HELLO */ 961 962 case OSPF_TYPE_DD: 963 ND_TCHECK(op->ospf_db.db_options); 964 ND_PRINT((ndo, "\n\tOptions [%s]", 965 bittok2str(ospf_option_values, "none", op->ospf_db.db_options))); 966 ND_TCHECK(op->ospf_db.db_flags); 967 ND_PRINT((ndo, ", DD Flags [%s]", 968 bittok2str(ospf_dd_flag_values, "none", op->ospf_db.db_flags))); 969 ND_TCHECK(op->ospf_db.db_ifmtu); 970 if (op->ospf_db.db_ifmtu) { 971 ND_PRINT((ndo, ", MTU: %u", EXTRACT_16BITS(&op->ospf_db.db_ifmtu))); 972 } 973 ND_TCHECK(op->ospf_db.db_seq); 974 ND_PRINT((ndo, ", Sequence: 0x%08x", EXTRACT_32BITS(&op->ospf_db.db_seq))); 975 976 /* Print all the LS adv's */ 977 lshp = op->ospf_db.db_lshdr; 978 while (((u_char *)lshp < dataend) && ospf_print_lshdr(ndo, lshp) != -1) { 979 ++lshp; 980 } 981 break; 982 983 case OSPF_TYPE_LS_REQ: 984 lsrp = op->ospf_lsr; 985 while ((u_char *)lsrp < dataend) { 986 ND_TCHECK(*lsrp); 987 988 ND_PRINT((ndo, "\n\t Advertising Router: %s, %s LSA (%u)", 989 ipaddr_string(ndo, &lsrp->ls_router), 990 tok2str(lsa_values,"unknown",EXTRACT_32BITS(lsrp->ls_type)), 991 EXTRACT_32BITS(&lsrp->ls_type))); 992 993 switch (EXTRACT_32BITS(lsrp->ls_type)) { 994 /* the LSA header for opaque LSAs was slightly changed */ 995 case LS_TYPE_OPAQUE_LL: 996 case LS_TYPE_OPAQUE_AL: 997 case LS_TYPE_OPAQUE_DW: 998 ND_PRINT((ndo, ", Opaque-Type: %s LSA (%u), Opaque-ID: %u", 999 tok2str(lsa_opaque_values, "unknown",lsrp->un_ls_stateid.opaque_field.opaque_type), 1000 lsrp->un_ls_stateid.opaque_field.opaque_type, 1001 EXTRACT_24BITS(&lsrp->un_ls_stateid.opaque_field.opaque_id))); 1002 break; 1003 default: 1004 ND_PRINT((ndo, ", LSA-ID: %s", 1005 ipaddr_string(ndo, &lsrp->un_ls_stateid.ls_stateid))); 1006 break; 1007 } 1008 1009 ++lsrp; 1010 } 1011 break; 1012 1013 case OSPF_TYPE_LS_UPDATE: 1014 lsap = op->ospf_lsu.lsu_lsa; 1015 ND_TCHECK(op->ospf_lsu.lsu_count); 1016 lsa_count_max = EXTRACT_32BITS(&op->ospf_lsu.lsu_count); 1017 ND_PRINT((ndo, ", %d LSA%s", lsa_count_max, PLURAL_SUFFIX(lsa_count_max))); 1018 for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) { 1019 ND_PRINT((ndo, "\n\t LSA #%u", lsa_count)); 1020 lsap = (const struct lsa *)ospf_print_lsa(ndo, lsap); 1021 if (lsap == NULL) 1022 goto trunc; 1023 } 1024 break; 1025 1026 case OSPF_TYPE_LS_ACK: 1027 lshp = op->ospf_lsa.lsa_lshdr; 1028 while (ospf_print_lshdr(ndo, lshp) != -1) { 1029 ++lshp; 1030 } 1031 break; 1032 1033 default: 1034 break; 1035 } 1036 return (0); 1037 trunc: 1038 return (1); 1039 } 1040 1041 void 1042 ospf_print(netdissect_options *ndo, 1043 register const u_char *bp, register u_int length, 1044 const u_char *bp2 _U_) 1045 { 1046 register const struct ospfhdr *op; 1047 register const u_char *dataend; 1048 register const char *cp; 1049 1050 op = (struct ospfhdr *)bp; 1051 1052 /* XXX Before we do anything else, strip off the MD5 trailer */ 1053 ND_TCHECK(op->ospf_authtype); 1054 if (EXTRACT_16BITS(&op->ospf_authtype) == OSPF_AUTH_MD5) { 1055 length -= OSPF_AUTH_MD5_LEN; 1056 ndo->ndo_snapend -= OSPF_AUTH_MD5_LEN; 1057 } 1058 1059 /* If the type is valid translate it, or just print the type */ 1060 /* value. If it's not valid, say so and return */ 1061 ND_TCHECK(op->ospf_type); 1062 cp = tok2str(type2str, "unknown LS-type", op->ospf_type); 1063 ND_PRINT((ndo, "OSPFv%u, %s, length %u", op->ospf_version, cp, length)); 1064 if (*cp == 'u') 1065 return; 1066 1067 if (!ndo->ndo_vflag) { /* non verbose - so lets bail out here */ 1068 return; 1069 } 1070 1071 ND_TCHECK(op->ospf_len); 1072 if (length != EXTRACT_16BITS(&op->ospf_len)) { 1073 ND_PRINT((ndo, " [len %d]", EXTRACT_16BITS(&op->ospf_len))); 1074 } 1075 1076 if (length > EXTRACT_16BITS(&op->ospf_len)) { 1077 dataend = bp + EXTRACT_16BITS(&op->ospf_len); 1078 } else { 1079 dataend = bp + length; 1080 } 1081 1082 ND_TCHECK(op->ospf_routerid); 1083 ND_PRINT((ndo, "\n\tRouter-ID %s", ipaddr_string(ndo, &op->ospf_routerid))); 1084 1085 ND_TCHECK(op->ospf_areaid); 1086 if (op->ospf_areaid.s_addr != 0) 1087 ND_PRINT((ndo, ", Area %s", ipaddr_string(ndo, &op->ospf_areaid))); 1088 else 1089 ND_PRINT((ndo, ", Backbone Area")); 1090 1091 if (ndo->ndo_vflag) { 1092 /* Print authentication data (should we really do this?) */ 1093 ND_TCHECK2(op->ospf_authdata[0], sizeof(op->ospf_authdata)); 1094 1095 ND_PRINT((ndo, ", Authentication Type: %s (%u)", 1096 tok2str(ospf_authtype_values, "unknown", EXTRACT_16BITS(&op->ospf_authtype)), 1097 EXTRACT_16BITS(&op->ospf_authtype))); 1098 1099 switch (EXTRACT_16BITS(&op->ospf_authtype)) { 1100 1101 case OSPF_AUTH_NONE: 1102 break; 1103 1104 case OSPF_AUTH_SIMPLE: 1105 ND_PRINT((ndo, "\n\tSimple text password: ")); 1106 safeputs(ndo, op->ospf_authdata, OSPF_AUTH_SIMPLE_LEN); 1107 break; 1108 1109 case OSPF_AUTH_MD5: 1110 ND_PRINT((ndo, "\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x", 1111 *((op->ospf_authdata) + 2), 1112 *((op->ospf_authdata) + 3), 1113 EXTRACT_32BITS((op->ospf_authdata) + 4))); 1114 break; 1115 1116 default: 1117 return; 1118 } 1119 } 1120 /* Do rest according to version. */ 1121 switch (op->ospf_version) { 1122 1123 case 2: 1124 /* ospf version 2 */ 1125 if (ospf_decode_v2(ndo, op, dataend)) 1126 goto trunc; 1127 if (length > EXTRACT_16BITS(&op->ospf_len)) { 1128 if (ospf_decode_lls(ndo, op, length)) 1129 goto trunc; 1130 } 1131 break; 1132 1133 default: 1134 ND_PRINT((ndo, " ospf [version %d]", op->ospf_version)); 1135 break; 1136 } /* end switch on version */ 1137 1138 return; 1139 trunc: 1140 ND_PRINT((ndo, "%s", tstr)); 1141 } 1142
