| 1 | /* |
| 2 | * Copyright (c) 1995, 1996 |
| 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 | |
| 22 | #ifndef lint |
| 23 | static const char rcsid[] _U_ = |
| 24 | "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.45.2.4 2006/02/13 01:32:34 hannes Exp $ (LBL)"; |
| 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
| 31 | #include <tcpdump-stdinc.h> |
| 32 | #include "interface.h" |
| 33 | |
| 34 | #define PIMV2_TYPE_HELLO 0 |
| 35 | #define PIMV2_TYPE_REGISTER 1 |
| 36 | #define PIMV2_TYPE_REGISTER_STOP 2 |
| 37 | #define PIMV2_TYPE_JOIN_PRUNE 3 |
| 38 | #define PIMV2_TYPE_BOOTSTRAP 4 |
| 39 | #define PIMV2_TYPE_ASSERT 5 |
| 40 | #define PIMV2_TYPE_GRAFT 6 |
| 41 | #define PIMV2_TYPE_GRAFT_ACK 7 |
| 42 | #define PIMV2_TYPE_CANDIDATE_RP 8 |
| 43 | #define PIMV2_TYPE_PRUNE_REFRESH 9 |
| 44 | |
| 45 | static struct tok pimv2_type_values[] = { |
| 46 | { PIMV2_TYPE_HELLO, "Hello" }, |
| 47 | { PIMV2_TYPE_REGISTER, "Register" }, |
| 48 | { PIMV2_TYPE_REGISTER_STOP, "Register Stop" }, |
| 49 | { PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" }, |
| 50 | { PIMV2_TYPE_BOOTSTRAP, "Bootstrap" }, |
| 51 | { PIMV2_TYPE_ASSERT, "Assert" }, |
| 52 | { PIMV2_TYPE_GRAFT, "Graft" }, |
| 53 | { PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" }, |
| 54 | { PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" }, |
| 55 | { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" }, |
| 56 | { 0, NULL} |
| 57 | }; |
| 58 | |
| 59 | #define PIMV2_HELLO_OPTION_HOLDTIME 1 |
| 60 | #define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2 |
| 61 | #define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18 |
| 62 | #define PIMV2_HELLO_OPTION_DR_PRIORITY 19 |
| 63 | #define PIMV2_HELLO_OPTION_GENID 20 |
| 64 | #define PIMV2_HELLO_OPTION_REFRESH_CAP 21 |
| 65 | #define PIMV2_HELLO_OPTION_BIDIR_CAP 22 |
| 66 | #define PIMV2_HELLO_OPTION_ADDRESS_LIST 24 |
| 67 | #define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001 |
| 68 | |
| 69 | static struct tok pimv2_hello_option_values[] = { |
| 70 | { PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" }, |
| 71 | { PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" }, |
| 72 | { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" }, |
| 73 | { PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" }, |
| 74 | { PIMV2_HELLO_OPTION_GENID, "Generation ID" }, |
| 75 | { PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" }, |
| 76 | { PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" }, |
| 77 | { PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" }, |
| 78 | { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" }, |
| 79 | { 0, NULL} |
| 80 | }; |
| 81 | |
| 82 | #define PIMV2_REGISTER_FLAG_LEN 4 |
| 83 | #define PIMV2_REGISTER_FLAG_BORDER 0x80000000 |
| 84 | #define PIMV2_REGISTER_FLAG_NULL 0x40000000 |
| 85 | |
| 86 | static struct tok pimv2_register_flag_values[] = { |
| 87 | { PIMV2_REGISTER_FLAG_BORDER, "Border" }, |
| 88 | { PIMV2_REGISTER_FLAG_NULL, "Null" }, |
| 89 | { 0, NULL} |
| 90 | }; |
| 91 | |
| 92 | /* |
| 93 | * XXX: We consider a case where IPv6 is not ready yet for portability, |
| 94 | * but PIM dependent defintions should be independent of IPv6... |
| 95 | */ |
| 96 | |
| 97 | struct pim { |
| 98 | u_int8_t pim_typever; |
| 99 | /* upper 4bit: PIM version number; 2 for PIMv2 */ |
| 100 | /* lower 4bit: the PIM message type, currently they are: |
| 101 | * Hello, Register, Register-Stop, Join/Prune, |
| 102 | * Bootstrap, Assert, Graft (PIM-DM only), |
| 103 | * Graft-Ack (PIM-DM only), C-RP-Adv |
| 104 | */ |
| 105 | #define PIM_VER(x) (((x) & 0xf0) >> 4) |
| 106 | #define PIM_TYPE(x) ((x) & 0x0f) |
| 107 | u_char pim_rsv; /* Reserved */ |
| 108 | u_short pim_cksum; /* IP style check sum */ |
| 109 | }; |
| 110 | |
| 111 | |
| 112 | #include <stdio.h> |
| 113 | #include <stdlib.h> |
| 114 | |
| 115 | #include "interface.h" |
| 116 | #include "addrtoname.h" |
| 117 | #include "extract.h" |
| 118 | |
| 119 | #include "ip.h" |
| 120 | |
| 121 | static void pimv2_print(register const u_char *bp, register u_int len); |
| 122 | |
| 123 | static void |
| 124 | pimv1_join_prune_print(register const u_char *bp, register u_int len) |
| 125 | { |
| 126 | int maddrlen, addrlen, ngroups, njoin, nprune; |
| 127 | int njp; |
| 128 | |
| 129 | /* If it's a single group and a single source, use 1-line output. */ |
| 130 | if (TTEST2(bp[0], 30) && bp[11] == 1 && |
| 131 | ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) { |
| 132 | int hold; |
| 133 | |
| 134 | (void)printf(" RPF %s ", ipaddr_string(bp)); |
| 135 | hold = EXTRACT_16BITS(&bp[6]); |
| 136 | if (hold != 180) { |
| 137 | (void)printf("Hold "); |
| 138 | relts_print(hold); |
| 139 | } |
| 140 | (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune", |
| 141 | ipaddr_string(&bp[26]), bp[25] & 0x3f, |
| 142 | ipaddr_string(&bp[12])); |
| 143 | if (EXTRACT_32BITS(&bp[16]) != 0xffffffff) |
| 144 | (void)printf("/%s", ipaddr_string(&bp[16])); |
| 145 | (void)printf(") %s%s %s", |
| 146 | (bp[24] & 0x01) ? "Sparse" : "Dense", |
| 147 | (bp[25] & 0x80) ? " WC" : "", |
| 148 | (bp[25] & 0x40) ? "RP" : "SPT"); |
| 149 | return; |
| 150 | } |
| 151 | |
| 152 | TCHECK2(bp[0], sizeof(struct in_addr)); |
| 153 | if (vflag > 1) |
| 154 | (void)printf("\n"); |
| 155 | (void)printf(" Upstream Nbr: %s", ipaddr_string(bp)); |
| 156 | TCHECK2(bp[6], 2); |
| 157 | if (vflag > 1) |
| 158 | (void)printf("\n"); |
| 159 | (void)printf(" Hold time: "); |
| 160 | relts_print(EXTRACT_16BITS(&bp[6])); |
| 161 | if (vflag < 2) |
| 162 | return; |
| 163 | bp += 8; |
| 164 | len -= 8; |
| 165 | |
| 166 | TCHECK2(bp[0], 4); |
| 167 | maddrlen = bp[1]; |
| 168 | addrlen = bp[2]; |
| 169 | ngroups = bp[3]; |
| 170 | bp += 4; |
| 171 | len -= 4; |
| 172 | while (ngroups--) { |
| 173 | /* |
| 174 | * XXX - does the address have length "addrlen" and the |
| 175 | * mask length "maddrlen"? |
| 176 | */ |
| 177 | TCHECK2(bp[0], sizeof(struct in_addr)); |
| 178 | (void)printf("\n\tGroup: %s", ipaddr_string(bp)); |
| 179 | TCHECK2(bp[4], sizeof(struct in_addr)); |
| 180 | if (EXTRACT_32BITS(&bp[4]) != 0xffffffff) |
| 181 | (void)printf("/%s", ipaddr_string(&bp[4])); |
| 182 | TCHECK2(bp[8], 4); |
| 183 | njoin = EXTRACT_16BITS(&bp[8]); |
| 184 | nprune = EXTRACT_16BITS(&bp[10]); |
| 185 | (void)printf(" joined: %d pruned: %d", njoin, nprune); |
| 186 | bp += 12; |
| 187 | len -= 12; |
| 188 | for (njp = 0; njp < (njoin + nprune); njp++) { |
| 189 | const char *type; |
| 190 | |
| 191 | if (njp < njoin) |
| 192 | type = "Join "; |
| 193 | else |
| 194 | type = "Prune"; |
| 195 | TCHECK2(bp[0], 6); |
| 196 | (void)printf("\n\t%s %s%s%s%s/%d", type, |
| 197 | (bp[0] & 0x01) ? "Sparse " : "Dense ", |
| 198 | (bp[1] & 0x80) ? "WC " : "", |
| 199 | (bp[1] & 0x40) ? "RP " : "SPT ", |
| 200 | ipaddr_string(&bp[2]), bp[1] & 0x3f); |
| 201 | bp += 6; |
| 202 | len -= 6; |
| 203 | } |
| 204 | } |
| 205 | return; |
| 206 | trunc: |
| 207 | (void)printf("[|pim]"); |
| 208 | return; |
| 209 | } |
| 210 | |
| 211 | void |
| 212 | pimv1_print(register const u_char *bp, register u_int len) |
| 213 | { |
| 214 | register const u_char *ep; |
| 215 | register u_char type; |
| 216 | |
| 217 | ep = (const u_char *)snapend; |
| 218 | if (bp >= ep) |
| 219 | return; |
| 220 | |
| 221 | TCHECK(bp[1]); |
| 222 | type = bp[1]; |
| 223 | |
| 224 | switch (type) { |
| 225 | case 0: |
| 226 | (void)printf(" Query"); |
| 227 | if (TTEST(bp[8])) { |
| 228 | switch (bp[8] >> 4) { |
| 229 | case 0: |
| 230 | (void)printf(" Dense-mode"); |
| 231 | break; |
| 232 | case 1: |
| 233 | (void)printf(" Sparse-mode"); |
| 234 | break; |
| 235 | case 2: |
| 236 | (void)printf(" Sparse-Dense-mode"); |
| 237 | break; |
| 238 | default: |
| 239 | (void)printf(" mode-%d", bp[8] >> 4); |
| 240 | break; |
| 241 | } |
| 242 | } |
| 243 | if (vflag) { |
| 244 | TCHECK2(bp[10],2); |
| 245 | (void)printf(" (Hold-time "); |
| 246 | relts_print(EXTRACT_16BITS(&bp[10])); |
| 247 | (void)printf(")"); |
| 248 | } |
| 249 | break; |
| 250 | |
| 251 | case 1: |
| 252 | (void)printf(" Register"); |
| 253 | TCHECK2(bp[8], 20); /* ip header */ |
| 254 | (void)printf(" for %s > %s", ipaddr_string(&bp[20]), |
| 255 | ipaddr_string(&bp[24])); |
| 256 | break; |
| 257 | case 2: |
| 258 | (void)printf(" Register-Stop"); |
| 259 | TCHECK2(bp[12], sizeof(struct in_addr)); |
| 260 | (void)printf(" for %s > %s", ipaddr_string(&bp[8]), |
| 261 | ipaddr_string(&bp[12])); |
| 262 | break; |
| 263 | case 3: |
| 264 | (void)printf(" Join/Prune"); |
| 265 | if (vflag) |
| 266 | pimv1_join_prune_print(&bp[8], len - 8); |
| 267 | break; |
| 268 | case 4: |
| 269 | (void)printf(" RP-reachable"); |
| 270 | if (vflag) { |
| 271 | TCHECK2(bp[22], 2); |
| 272 | (void)printf(" group %s", |
| 273 | ipaddr_string(&bp[8])); |
| 274 | if (EXTRACT_32BITS(&bp[12]) != 0xffffffff) |
| 275 | (void)printf("/%s", ipaddr_string(&bp[12])); |
| 276 | (void)printf(" RP %s hold ", ipaddr_string(&bp[16])); |
| 277 | relts_print(EXTRACT_16BITS(&bp[22])); |
| 278 | } |
| 279 | break; |
| 280 | case 5: |
| 281 | (void)printf(" Assert"); |
| 282 | TCHECK2(bp[16], sizeof(struct in_addr)); |
| 283 | (void)printf(" for %s > %s", ipaddr_string(&bp[16]), |
| 284 | ipaddr_string(&bp[8])); |
| 285 | if (EXTRACT_32BITS(&bp[12]) != 0xffffffff) |
| 286 | (void)printf("/%s", ipaddr_string(&bp[12])); |
| 287 | TCHECK2(bp[24], 4); |
| 288 | (void)printf(" %s pref %d metric %d", |
| 289 | (bp[20] & 0x80) ? "RP-tree" : "SPT", |
| 290 | EXTRACT_32BITS(&bp[20]) & 0x7fffffff, |
| 291 | EXTRACT_32BITS(&bp[24])); |
| 292 | break; |
| 293 | case 6: |
| 294 | (void)printf(" Graft"); |
| 295 | if (vflag) |
| 296 | pimv1_join_prune_print(&bp[8], len - 8); |
| 297 | break; |
| 298 | case 7: |
| 299 | (void)printf(" Graft-ACK"); |
| 300 | if (vflag) |
| 301 | pimv1_join_prune_print(&bp[8], len - 8); |
| 302 | break; |
| 303 | case 8: |
| 304 | (void)printf(" Mode"); |
| 305 | break; |
| 306 | default: |
| 307 | (void)printf(" [type %d]", type); |
| 308 | break; |
| 309 | } |
| 310 | if ((bp[4] >> 4) != 1) |
| 311 | (void)printf(" [v%d]", bp[4] >> 4); |
| 312 | return; |
| 313 | |
| 314 | trunc: |
| 315 | (void)printf("[|pim]"); |
| 316 | return; |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * auto-RP is a cisco protocol, documented at |
| 321 | * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt |
| 322 | * |
| 323 | * This implements version 1+, dated Sept 9, 1998. |
| 324 | */ |
| 325 | void |
| 326 | cisco_autorp_print(register const u_char *bp, register u_int len) |
| 327 | { |
| 328 | int type; |
| 329 | int numrps; |
| 330 | int hold; |
| 331 | |
| 332 | TCHECK(bp[0]); |
| 333 | (void)printf(" auto-rp "); |
| 334 | type = bp[0]; |
| 335 | switch (type) { |
| 336 | case 0x11: |
| 337 | (void)printf("candidate-advert"); |
| 338 | break; |
| 339 | case 0x12: |
| 340 | (void)printf("mapping"); |
| 341 | break; |
| 342 | default: |
| 343 | (void)printf("type-0x%02x", type); |
| 344 | break; |
| 345 | } |
| 346 | |
| 347 | TCHECK(bp[1]); |
| 348 | numrps = bp[1]; |
| 349 | |
| 350 | TCHECK2(bp[2], 2); |
| 351 | (void)printf(" Hold "); |
| 352 | hold = EXTRACT_16BITS(&bp[2]); |
| 353 | if (hold) |
| 354 | relts_print(EXTRACT_16BITS(&bp[2])); |
| 355 | else |
| 356 | printf("FOREVER"); |
| 357 | |
| 358 | /* Next 4 bytes are reserved. */ |
| 359 | |
| 360 | bp += 8; len -= 8; |
| 361 | |
| 362 | /*XXX skip unless -v? */ |
| 363 | |
| 364 | /* |
| 365 | * Rest of packet: |
| 366 | * numrps entries of the form: |
| 367 | * 32 bits: RP |
| 368 | * 6 bits: reserved |
| 369 | * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2". |
| 370 | * 8 bits: # of entries for this RP |
| 371 | * each entry: 7 bits: reserved, 1 bit: negative, |
| 372 | * 8 bits: mask 32 bits: source |
| 373 | * lather, rinse, repeat. |
| 374 | */ |
| 375 | while (numrps--) { |
| 376 | int nentries; |
| 377 | char s; |
| 378 | |
| 379 | TCHECK2(bp[0], 4); |
| 380 | (void)printf(" RP %s", ipaddr_string(bp)); |
| 381 | TCHECK(bp[4]); |
| 382 | switch (bp[4] & 0x3) { |
| 383 | case 0: printf(" PIMv?"); |
| 384 | break; |
| 385 | case 1: printf(" PIMv1"); |
| 386 | break; |
| 387 | case 2: printf(" PIMv2"); |
| 388 | break; |
| 389 | case 3: printf(" PIMv1+2"); |
| 390 | break; |
| 391 | } |
| 392 | if (bp[4] & 0xfc) |
| 393 | (void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc); |
| 394 | TCHECK(bp[5]); |
| 395 | nentries = bp[5]; |
| 396 | bp += 6; len -= 6; |
| 397 | s = ' '; |
| 398 | for (; nentries; nentries--) { |
| 399 | TCHECK2(bp[0], 6); |
| 400 | (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "", |
| 401 | ipaddr_string(&bp[2]), bp[1]); |
| 402 | if (bp[0] & 0xfe) |
| 403 | (void)printf("[rsvd=0x%02x]", bp[0] & 0xfe); |
| 404 | s = ','; |
| 405 | bp += 6; len -= 6; |
| 406 | } |
| 407 | } |
| 408 | return; |
| 409 | |
| 410 | trunc: |
| 411 | (void)printf("[|autorp]"); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | void |
| 416 | pim_print(register const u_char *bp, register u_int len) |
| 417 | { |
| 418 | register const u_char *ep; |
| 419 | register struct pim *pim = (struct pim *)bp; |
| 420 | |
| 421 | ep = (const u_char *)snapend; |
| 422 | if (bp >= ep) |
| 423 | return; |
| 424 | #ifdef notyet /* currently we see only version and type */ |
| 425 | TCHECK(pim->pim_rsv); |
| 426 | #endif |
| 427 | |
| 428 | switch (PIM_VER(pim->pim_typever)) { |
| 429 | case 2: |
| 430 | if (!vflag) { |
| 431 | printf("PIMv%u, %s, length %u", |
| 432 | PIM_VER(pim->pim_typever), |
| 433 | tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)), |
| 434 | len); |
| 435 | return; |
| 436 | } else { |
| 437 | printf("PIMv%u, length %u\n\t%s", |
| 438 | PIM_VER(pim->pim_typever), |
| 439 | len, |
| 440 | tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever))); |
| 441 | pimv2_print(bp, len); |
| 442 | } |
| 443 | break; |
| 444 | default: |
| 445 | printf("PIMv%u, length %u", |
| 446 | PIM_VER(pim->pim_typever), |
| 447 | len); |
| 448 | break; |
| 449 | } |
| 450 | return; |
| 451 | } |
| 452 | |
| 453 | /* |
| 454 | * PIMv2 uses encoded address representations. |
| 455 | * |
| 456 | * The last PIM-SM I-D before RFC2117 was published specified the |
| 457 | * following representation for unicast addresses. However, RFC2117 |
| 458 | * specified no encoding for unicast addresses with the unicast |
| 459 | * address length specified in the header. Therefore, we have to |
| 460 | * guess which encoding is being used (Cisco's PIMv2 implementation |
| 461 | * uses the non-RFC encoding). RFC2117 turns a previously "Reserved" |
| 462 | * field into a 'unicast-address-length-in-bytes' field. We guess |
| 463 | * that it's the draft encoding if this reserved field is zero. |
| 464 | * |
| 465 | * RFC2362 goes back to the encoded format, and calls the addr length |
| 466 | * field "reserved" again. |
| 467 | * |
| 468 | * The first byte is the address family, from: |
| 469 | * |
| 470 | * 0 Reserved |
| 471 | * 1 IP (IP version 4) |
| 472 | * 2 IP6 (IP version 6) |
| 473 | * 3 NSAP |
| 474 | * 4 HDLC (8-bit multidrop) |
| 475 | * 5 BBN 1822 |
| 476 | * 6 802 (includes all 802 media plus Ethernet "canonical format") |
| 477 | * 7 E.163 |
| 478 | * 8 E.164 (SMDS, Frame Relay, ATM) |
| 479 | * 9 F.69 (Telex) |
| 480 | * 10 X.121 (X.25, Frame Relay) |
| 481 | * 11 IPX |
| 482 | * 12 Appletalk |
| 483 | * 13 Decnet IV |
| 484 | * 14 Banyan Vines |
| 485 | * 15 E.164 with NSAP format subaddress |
| 486 | * |
| 487 | * In addition, the second byte is an "Encoding". 0 is the default |
| 488 | * encoding for the address family, and no other encodings are currently |
| 489 | * specified. |
| 490 | * |
| 491 | */ |
| 492 | |
| 493 | static int pimv2_addr_len; |
| 494 | |
| 495 | enum pimv2_addrtype { |
| 496 | pimv2_unicast, pimv2_group, pimv2_source |
| 497 | }; |
| 498 | |
| 499 | /* 0 1 2 3 |
| 500 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 501 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 502 | * | Addr Family | Encoding Type | Unicast Address | |
| 503 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++ |
| 504 | * 0 1 2 3 |
| 505 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 506 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 507 | * | Addr Family | Encoding Type | Reserved | Mask Len | |
| 508 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 509 | * | Group multicast Address | |
| 510 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 511 | * 0 1 2 3 |
| 512 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 513 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 514 | * | Addr Family | Encoding Type | Rsrvd |S|W|R| Mask Len | |
| 515 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 516 | * | Source Address | |
| 517 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 518 | */ |
| 519 | static int |
| 520 | pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent) |
| 521 | { |
| 522 | int af; |
| 523 | int len, hdrlen; |
| 524 | |
| 525 | TCHECK(bp[0]); |
| 526 | |
| 527 | if (pimv2_addr_len == 0) { |
| 528 | TCHECK(bp[1]); |
| 529 | switch (bp[0]) { |
| 530 | case 1: |
| 531 | af = AF_INET; |
| 532 | len = sizeof(struct in_addr); |
| 533 | break; |
| 534 | #ifdef INET6 |
| 535 | case 2: |
| 536 | af = AF_INET6; |
| 537 | len = sizeof(struct in6_addr); |
| 538 | break; |
| 539 | #endif |
| 540 | default: |
| 541 | return -1; |
| 542 | } |
| 543 | if (bp[1] != 0) |
| 544 | return -1; |
| 545 | hdrlen = 2; |
| 546 | } else { |
| 547 | switch (pimv2_addr_len) { |
| 548 | case sizeof(struct in_addr): |
| 549 | af = AF_INET; |
| 550 | break; |
| 551 | #ifdef INET6 |
| 552 | case sizeof(struct in6_addr): |
| 553 | af = AF_INET6; |
| 554 | break; |
| 555 | #endif |
| 556 | default: |
| 557 | return -1; |
| 558 | break; |
| 559 | } |
| 560 | len = pimv2_addr_len; |
| 561 | hdrlen = 0; |
| 562 | } |
| 563 | |
| 564 | bp += hdrlen; |
| 565 | switch (at) { |
| 566 | case pimv2_unicast: |
| 567 | TCHECK2(bp[0], len); |
| 568 | if (af == AF_INET) { |
| 569 | if (!silent) |
| 570 | (void)printf("%s", ipaddr_string(bp)); |
| 571 | } |
| 572 | #ifdef INET6 |
| 573 | else if (af == AF_INET6) { |
| 574 | if (!silent) |
| 575 | (void)printf("%s", ip6addr_string(bp)); |
| 576 | } |
| 577 | #endif |
| 578 | return hdrlen + len; |
| 579 | case pimv2_group: |
| 580 | case pimv2_source: |
| 581 | TCHECK2(bp[0], len + 2); |
| 582 | if (af == AF_INET) { |
| 583 | if (!silent) { |
| 584 | (void)printf("%s", ipaddr_string(bp + 2)); |
| 585 | if (bp[1] != 32) |
| 586 | (void)printf("/%u", bp[1]); |
| 587 | } |
| 588 | } |
| 589 | #ifdef INET6 |
| 590 | else if (af == AF_INET6) { |
| 591 | if (!silent) { |
| 592 | (void)printf("%s", ip6addr_string(bp + 2)); |
| 593 | if (bp[1] != 128) |
| 594 | (void)printf("/%u", bp[1]); |
| 595 | } |
| 596 | } |
| 597 | #endif |
| 598 | if (bp[0] && !silent) { |
| 599 | if (at == pimv2_group) { |
| 600 | (void)printf("(0x%02x)", bp[0]); |
| 601 | } else { |
| 602 | (void)printf("(%s%s%s", |
| 603 | bp[0] & 0x04 ? "S" : "", |
| 604 | bp[0] & 0x02 ? "W" : "", |
| 605 | bp[0] & 0x01 ? "R" : ""); |
| 606 | if (bp[0] & 0xf8) { |
| 607 | (void) printf("+0x%02x", bp[0] & 0xf8); |
| 608 | } |
| 609 | (void)printf(")"); |
| 610 | } |
| 611 | } |
| 612 | return hdrlen + 2 + len; |
| 613 | default: |
| 614 | return -1; |
| 615 | } |
| 616 | trunc: |
| 617 | return -1; |
| 618 | } |
| 619 | |
| 620 | static void |
| 621 | pimv2_print(register const u_char *bp, register u_int len) |
| 622 | { |
| 623 | register const u_char *ep; |
| 624 | register struct pim *pim = (struct pim *)bp; |
| 625 | int advance; |
| 626 | |
| 627 | ep = (const u_char *)snapend; |
| 628 | if (bp >= ep) |
| 629 | return; |
| 630 | if (ep > bp + len) |
| 631 | ep = bp + len; |
| 632 | TCHECK(pim->pim_rsv); |
| 633 | pimv2_addr_len = pim->pim_rsv; |
| 634 | if (pimv2_addr_len != 0) |
| 635 | (void)printf(", RFC2117-encoding"); |
| 636 | |
| 637 | printf(", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum)); |
| 638 | if (EXTRACT_16BITS(&pim->pim_cksum) == 0) { |
| 639 | printf("(unverified)"); |
| 640 | } else { |
| 641 | printf("(%scorrect)", |
| 642 | TTEST2(bp[0], len) && |
| 643 | in_cksum((const u_short*)bp, len, 0) ? "in" : "" ); |
| 644 | } |
| 645 | |
| 646 | switch (PIM_TYPE(pim->pim_typever)) { |
| 647 | case PIMV2_TYPE_HELLO: |
| 648 | { |
| 649 | u_int16_t otype, olen; |
| 650 | bp += 4; |
| 651 | while (bp < ep) { |
| 652 | TCHECK2(bp[0], 4); |
| 653 | otype = EXTRACT_16BITS(&bp[0]); |
| 654 | olen = EXTRACT_16BITS(&bp[2]); |
| 655 | TCHECK2(bp[0], 4 + olen); |
| 656 | |
| 657 | printf("\n\t %s Option (%u), length %u, Value: ", |
| 658 | tok2str( pimv2_hello_option_values,"Unknown",otype), |
| 659 | otype, |
| 660 | olen); |
| 661 | bp += 4; |
| 662 | |
| 663 | switch (otype) { |
| 664 | case PIMV2_HELLO_OPTION_HOLDTIME: |
| 665 | relts_print(EXTRACT_16BITS(bp)); |
| 666 | break; |
| 667 | |
| 668 | case PIMV2_HELLO_OPTION_LANPRUNEDELAY: |
| 669 | if (olen != 4) { |
| 670 | (void)printf("ERROR: Option Lenght != 4 Bytes (%u)", olen); |
| 671 | } else { |
| 672 | char t_bit; |
| 673 | u_int16_t lan_delay, override_interval; |
| 674 | lan_delay = EXTRACT_16BITS(bp); |
| 675 | override_interval = EXTRACT_16BITS(bp+2); |
| 676 | t_bit = (lan_delay & 0x8000)? 1 : 0; |
| 677 | lan_delay &= ~0x8000; |
| 678 | (void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms", |
| 679 | t_bit, lan_delay, override_interval); |
| 680 | } |
| 681 | break; |
| 682 | |
| 683 | case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD: |
| 684 | case PIMV2_HELLO_OPTION_DR_PRIORITY: |
| 685 | switch (olen) { |
| 686 | case 0: |
| 687 | printf("Bi-Directional Capability (Old)"); |
| 688 | break; |
| 689 | case 4: |
| 690 | printf("%u", EXTRACT_32BITS(bp)); |
| 691 | break; |
| 692 | default: |
| 693 | printf("ERROR: Option Lenght != 4 Bytes (%u)", olen); |
| 694 | break; |
| 695 | } |
| 696 | break; |
| 697 | |
| 698 | case PIMV2_HELLO_OPTION_GENID: |
| 699 | (void)printf("0x%08x", EXTRACT_32BITS(bp)); |
| 700 | break; |
| 701 | |
| 702 | case PIMV2_HELLO_OPTION_REFRESH_CAP: |
| 703 | (void)printf("v%d", *bp); |
| 704 | if (*(bp+1) != 0) { |
| 705 | (void)printf(", interval "); |
| 706 | relts_print(*(bp+1)); |
| 707 | } |
| 708 | if (EXTRACT_16BITS(bp+2) != 0) { |
| 709 | (void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2)); |
| 710 | } |
| 711 | break; |
| 712 | |
| 713 | case PIMV2_HELLO_OPTION_BIDIR_CAP: |
| 714 | break; |
| 715 | |
| 716 | case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD: |
| 717 | case PIMV2_HELLO_OPTION_ADDRESS_LIST: |
| 718 | if (vflag > 1) { |
| 719 | const u_char *ptr = bp; |
| 720 | while (ptr < (bp+olen)) { |
| 721 | int advance; |
| 722 | |
| 723 | printf("\n\t "); |
| 724 | advance = pimv2_addr_print(ptr, pimv2_unicast, 0); |
| 725 | if (advance < 0) { |
| 726 | printf("..."); |
| 727 | break; |
| 728 | } |
| 729 | ptr += advance; |
| 730 | } |
| 731 | } |
| 732 | break; |
| 733 | default: |
| 734 | if (vflag <= 1) |
| 735 | print_unknown_data(bp,"\n\t ",olen); |
| 736 | break; |
| 737 | } |
| 738 | /* do we want to see an additionally hexdump ? */ |
| 739 | if (vflag> 1) |
| 740 | print_unknown_data(bp,"\n\t ",olen); |
| 741 | bp += olen; |
| 742 | } |
| 743 | break; |
| 744 | } |
| 745 | |
| 746 | case PIMV2_TYPE_REGISTER: |
| 747 | { |
| 748 | struct ip *ip; |
| 749 | |
| 750 | if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN)) |
| 751 | goto trunc; |
| 752 | |
| 753 | printf(", Flags [ %s ]\n\t", |
| 754 | tok2str(pimv2_register_flag_values, |
| 755 | "none", |
| 756 | EXTRACT_32BITS(bp+4))); |
| 757 | |
| 758 | bp += 8; len -= 8; |
| 759 | /* encapsulated multicast packet */ |
| 760 | ip = (struct ip *)bp; |
| 761 | switch (IP_V(ip)) { |
| 762 | case 0: /* Null header */ |
| 763 | (void)printf("IP-Null-header %s > %s", |
| 764 | ipaddr_string(&ip->ip_src), |
| 765 | ipaddr_string(&ip->ip_dst)); |
| 766 | break; |
| 767 | |
| 768 | case 4: /* IPv4 */ |
| 769 | ip_print(gndo, bp, len); |
| 770 | break; |
| 771 | #ifdef INET6 |
| 772 | case 6: /* IPv6 */ |
| 773 | ip6_print(bp, len); |
| 774 | break; |
| 775 | #endif |
| 776 | default: |
| 777 | (void)printf("IP ver %d", IP_V(ip)); |
| 778 | break; |
| 779 | } |
| 780 | break; |
| 781 | } |
| 782 | |
| 783 | case PIMV2_TYPE_REGISTER_STOP: |
| 784 | bp += 4; len -= 4; |
| 785 | if (bp >= ep) |
| 786 | break; |
| 787 | (void)printf(" group="); |
| 788 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 789 | (void)printf("..."); |
| 790 | break; |
| 791 | } |
| 792 | bp += advance; len -= advance; |
| 793 | if (bp >= ep) |
| 794 | break; |
| 795 | (void)printf(" source="); |
| 796 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 797 | (void)printf("..."); |
| 798 | break; |
| 799 | } |
| 800 | bp += advance; len -= advance; |
| 801 | break; |
| 802 | |
| 803 | case PIMV2_TYPE_JOIN_PRUNE: |
| 804 | case PIMV2_TYPE_GRAFT: |
| 805 | case PIMV2_TYPE_GRAFT_ACK: |
| 806 | |
| 807 | |
| 808 | /* |
| 809 | * 0 1 2 3 |
| 810 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 811 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 812 | * |PIM Ver| Type | Addr length | Checksum | |
| 813 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 814 | * | Unicast-Upstream Neighbor Address | |
| 815 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 816 | * | Reserved | Num groups | Holdtime | |
| 817 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 818 | * | Encoded-Multicast Group Address-1 | |
| 819 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 820 | * | Number of Joined Sources | Number of Pruned Sources | |
| 821 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 822 | * | Encoded-Joined Source Address-1 | |
| 823 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 824 | * | . | |
| 825 | * | . | |
| 826 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 827 | * | Encoded-Joined Source Address-n | |
| 828 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 829 | * | Encoded-Pruned Source Address-1 | |
| 830 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 831 | * | . | |
| 832 | * | . | |
| 833 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 834 | * | Encoded-Pruned Source Address-n | |
| 835 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 836 | * | . | |
| 837 | * | . | |
| 838 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 839 | * | Encoded-Multicast Group Address-n | |
| 840 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 841 | */ |
| 842 | |
| 843 | { |
| 844 | u_int8_t ngroup; |
| 845 | u_int16_t holdtime; |
| 846 | u_int16_t njoin; |
| 847 | u_int16_t nprune; |
| 848 | int i, j; |
| 849 | |
| 850 | bp += 4; len -= 4; |
| 851 | if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/ |
| 852 | if (bp >= ep) |
| 853 | break; |
| 854 | (void)printf(", upstream-neighbor: "); |
| 855 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 856 | (void)printf("..."); |
| 857 | break; |
| 858 | } |
| 859 | bp += advance; len -= advance; |
| 860 | } |
| 861 | if (bp + 4 > ep) |
| 862 | break; |
| 863 | ngroup = bp[1]; |
| 864 | holdtime = EXTRACT_16BITS(&bp[2]); |
| 865 | (void)printf("\n\t %u group(s)", ngroup); |
| 866 | if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/ |
| 867 | (void)printf(", holdtime: "); |
| 868 | if (holdtime == 0xffff) |
| 869 | (void)printf("infinite"); |
| 870 | else |
| 871 | relts_print(holdtime); |
| 872 | } |
| 873 | bp += 4; len -= 4; |
| 874 | for (i = 0; i < ngroup; i++) { |
| 875 | if (bp >= ep) |
| 876 | goto jp_done; |
| 877 | (void)printf("\n\t group #%u: ", i+1); |
| 878 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 879 | (void)printf("...)"); |
| 880 | goto jp_done; |
| 881 | } |
| 882 | bp += advance; len -= advance; |
| 883 | if (bp + 4 > ep) { |
| 884 | (void)printf("...)"); |
| 885 | goto jp_done; |
| 886 | } |
| 887 | njoin = EXTRACT_16BITS(&bp[0]); |
| 888 | nprune = EXTRACT_16BITS(&bp[2]); |
| 889 | (void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune); |
| 890 | bp += 4; len -= 4; |
| 891 | for (j = 0; j < njoin; j++) { |
| 892 | (void)printf("\n\t joined source #%u: ",j+1); |
| 893 | if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) { |
| 894 | (void)printf("...)"); |
| 895 | goto jp_done; |
| 896 | } |
| 897 | bp += advance; len -= advance; |
| 898 | } |
| 899 | for (j = 0; j < nprune; j++) { |
| 900 | (void)printf("\n\t pruned source #%u: ",j+1); |
| 901 | if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) { |
| 902 | (void)printf("...)"); |
| 903 | goto jp_done; |
| 904 | } |
| 905 | bp += advance; len -= advance; |
| 906 | } |
| 907 | } |
| 908 | jp_done: |
| 909 | break; |
| 910 | } |
| 911 | |
| 912 | case PIMV2_TYPE_BOOTSTRAP: |
| 913 | { |
| 914 | int i, j, frpcnt; |
| 915 | bp += 4; |
| 916 | |
| 917 | /* Fragment Tag, Hash Mask len, and BSR-priority */ |
| 918 | if (bp + sizeof(u_int16_t) >= ep) break; |
| 919 | (void)printf(" tag=%x", EXTRACT_16BITS(bp)); |
| 920 | bp += sizeof(u_int16_t); |
| 921 | if (bp >= ep) break; |
| 922 | (void)printf(" hashmlen=%d", bp[0]); |
| 923 | if (bp + 1 >= ep) break; |
| 924 | (void)printf(" BSRprio=%d", bp[1]); |
| 925 | bp += 2; |
| 926 | |
| 927 | /* Encoded-Unicast-BSR-Address */ |
| 928 | if (bp >= ep) break; |
| 929 | (void)printf(" BSR="); |
| 930 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 931 | (void)printf("..."); |
| 932 | break; |
| 933 | } |
| 934 | bp += advance; |
| 935 | |
| 936 | for (i = 0; bp < ep; i++) { |
| 937 | /* Encoded-Group Address */ |
| 938 | (void)printf(" (group%d: ", i); |
| 939 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) |
| 940 | < 0) { |
| 941 | (void)printf("...)"); |
| 942 | goto bs_done; |
| 943 | } |
| 944 | bp += advance; |
| 945 | |
| 946 | /* RP-Count, Frag RP-Cnt, and rsvd */ |
| 947 | if (bp >= ep) { |
| 948 | (void)printf("...)"); |
| 949 | goto bs_done; |
| 950 | } |
| 951 | (void)printf(" RPcnt=%d", bp[0]); |
| 952 | if (bp + 1 >= ep) { |
| 953 | (void)printf("...)"); |
| 954 | goto bs_done; |
| 955 | } |
| 956 | (void)printf(" FRPcnt=%d", frpcnt = bp[1]); |
| 957 | bp += 4; |
| 958 | |
| 959 | for (j = 0; j < frpcnt && bp < ep; j++) { |
| 960 | /* each RP info */ |
| 961 | (void)printf(" RP%d=", j); |
| 962 | if ((advance = pimv2_addr_print(bp, |
| 963 | pimv2_unicast, |
| 964 | 0)) < 0) { |
| 965 | (void)printf("...)"); |
| 966 | goto bs_done; |
| 967 | } |
| 968 | bp += advance; |
| 969 | |
| 970 | if (bp + 1 >= ep) { |
| 971 | (void)printf("...)"); |
| 972 | goto bs_done; |
| 973 | } |
| 974 | (void)printf(",holdtime="); |
| 975 | relts_print(EXTRACT_16BITS(bp)); |
| 976 | if (bp + 2 >= ep) { |
| 977 | (void)printf("...)"); |
| 978 | goto bs_done; |
| 979 | } |
| 980 | (void)printf(",prio=%d", bp[2]); |
| 981 | bp += 4; |
| 982 | } |
| 983 | (void)printf(")"); |
| 984 | } |
| 985 | bs_done: |
| 986 | break; |
| 987 | } |
| 988 | case PIMV2_TYPE_ASSERT: |
| 989 | bp += 4; len -= 4; |
| 990 | if (bp >= ep) |
| 991 | break; |
| 992 | (void)printf(" group="); |
| 993 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 994 | (void)printf("..."); |
| 995 | break; |
| 996 | } |
| 997 | bp += advance; len -= advance; |
| 998 | if (bp >= ep) |
| 999 | break; |
| 1000 | (void)printf(" src="); |
| 1001 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1002 | (void)printf("..."); |
| 1003 | break; |
| 1004 | } |
| 1005 | bp += advance; len -= advance; |
| 1006 | if (bp + 8 > ep) |
| 1007 | break; |
| 1008 | if (bp[0] & 0x80) |
| 1009 | (void)printf(" RPT"); |
| 1010 | (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff); |
| 1011 | (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4])); |
| 1012 | break; |
| 1013 | |
| 1014 | case PIMV2_TYPE_CANDIDATE_RP: |
| 1015 | { |
| 1016 | int i, pfxcnt; |
| 1017 | bp += 4; |
| 1018 | |
| 1019 | /* Prefix-Cnt, Priority, and Holdtime */ |
| 1020 | if (bp >= ep) break; |
| 1021 | (void)printf(" prefix-cnt=%d", bp[0]); |
| 1022 | pfxcnt = bp[0]; |
| 1023 | if (bp + 1 >= ep) break; |
| 1024 | (void)printf(" prio=%d", bp[1]); |
| 1025 | if (bp + 3 >= ep) break; |
| 1026 | (void)printf(" holdtime="); |
| 1027 | relts_print(EXTRACT_16BITS(&bp[2])); |
| 1028 | bp += 4; |
| 1029 | |
| 1030 | /* Encoded-Unicast-RP-Address */ |
| 1031 | if (bp >= ep) break; |
| 1032 | (void)printf(" RP="); |
| 1033 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1034 | (void)printf("..."); |
| 1035 | break; |
| 1036 | } |
| 1037 | bp += advance; |
| 1038 | |
| 1039 | /* Encoded-Group Addresses */ |
| 1040 | for (i = 0; i < pfxcnt && bp < ep; i++) { |
| 1041 | (void)printf(" Group%d=", i); |
| 1042 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) |
| 1043 | < 0) { |
| 1044 | (void)printf("..."); |
| 1045 | break; |
| 1046 | } |
| 1047 | bp += advance; |
| 1048 | } |
| 1049 | break; |
| 1050 | } |
| 1051 | |
| 1052 | case PIMV2_TYPE_PRUNE_REFRESH: |
| 1053 | (void)printf(" src="); |
| 1054 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1055 | (void)printf("..."); |
| 1056 | break; |
| 1057 | } |
| 1058 | bp += advance; |
| 1059 | (void)printf(" grp="); |
| 1060 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 1061 | (void)printf("..."); |
| 1062 | break; |
| 1063 | } |
| 1064 | bp += advance; |
| 1065 | (void)printf(" forwarder="); |
| 1066 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1067 | (void)printf("..."); |
| 1068 | break; |
| 1069 | } |
| 1070 | bp += advance; |
| 1071 | TCHECK2(bp[0], 2); |
| 1072 | (void)printf(" TUNR "); |
| 1073 | relts_print(EXTRACT_16BITS(bp)); |
| 1074 | break; |
| 1075 | |
| 1076 | |
| 1077 | default: |
| 1078 | (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever)); |
| 1079 | break; |
| 1080 | } |
| 1081 | |
| 1082 | return; |
| 1083 | |
| 1084 | trunc: |
| 1085 | (void)printf("[|pim]"); |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * Local Variables: |
| 1090 | * c-style: whitesmith |
| 1091 | * c-basic-offset: 8 |
| 1092 | * End: |
| 1093 | */ |