The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 24 | "@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.49 2006-02-13 01:31:35 hannes Exp $ (LBL)"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
| 31 | #include <tcpdump-stdinc.h> |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 32 | |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 36 | #include "interface.h" |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 37 | #include "addrtoname.h" |
| 38 | #include "extract.h" |
| 39 | |
| 40 | #include "ip.h" |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 41 | |
| 42 | #define PIMV2_TYPE_HELLO 0 |
| 43 | #define PIMV2_TYPE_REGISTER 1 |
| 44 | #define PIMV2_TYPE_REGISTER_STOP 2 |
| 45 | #define PIMV2_TYPE_JOIN_PRUNE 3 |
| 46 | #define PIMV2_TYPE_BOOTSTRAP 4 |
| 47 | #define PIMV2_TYPE_ASSERT 5 |
| 48 | #define PIMV2_TYPE_GRAFT 6 |
| 49 | #define PIMV2_TYPE_GRAFT_ACK 7 |
| 50 | #define PIMV2_TYPE_CANDIDATE_RP 8 |
| 51 | #define PIMV2_TYPE_PRUNE_REFRESH 9 |
| 52 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 53 | static const struct tok pimv2_type_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 54 | { PIMV2_TYPE_HELLO, "Hello" }, |
| 55 | { PIMV2_TYPE_REGISTER, "Register" }, |
| 56 | { PIMV2_TYPE_REGISTER_STOP, "Register Stop" }, |
| 57 | { PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" }, |
| 58 | { PIMV2_TYPE_BOOTSTRAP, "Bootstrap" }, |
| 59 | { PIMV2_TYPE_ASSERT, "Assert" }, |
| 60 | { PIMV2_TYPE_GRAFT, "Graft" }, |
| 61 | { PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" }, |
| 62 | { PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" }, |
| 63 | { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" }, |
| 64 | { 0, NULL} |
| 65 | }; |
| 66 | |
| 67 | #define PIMV2_HELLO_OPTION_HOLDTIME 1 |
| 68 | #define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2 |
| 69 | #define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18 |
| 70 | #define PIMV2_HELLO_OPTION_DR_PRIORITY 19 |
| 71 | #define PIMV2_HELLO_OPTION_GENID 20 |
| 72 | #define PIMV2_HELLO_OPTION_REFRESH_CAP 21 |
| 73 | #define PIMV2_HELLO_OPTION_BIDIR_CAP 22 |
| 74 | #define PIMV2_HELLO_OPTION_ADDRESS_LIST 24 |
| 75 | #define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001 |
| 76 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 77 | static const struct tok pimv2_hello_option_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 78 | { PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" }, |
| 79 | { PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" }, |
| 80 | { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" }, |
| 81 | { PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" }, |
| 82 | { PIMV2_HELLO_OPTION_GENID, "Generation ID" }, |
| 83 | { PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" }, |
| 84 | { PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" }, |
| 85 | { PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" }, |
| 86 | { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" }, |
| 87 | { 0, NULL} |
| 88 | }; |
| 89 | |
| 90 | #define PIMV2_REGISTER_FLAG_LEN 4 |
| 91 | #define PIMV2_REGISTER_FLAG_BORDER 0x80000000 |
| 92 | #define PIMV2_REGISTER_FLAG_NULL 0x40000000 |
| 93 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 94 | static const struct tok pimv2_register_flag_values[] = { |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 95 | { PIMV2_REGISTER_FLAG_BORDER, "Border" }, |
| 96 | { PIMV2_REGISTER_FLAG_NULL, "Null" }, |
| 97 | { 0, NULL} |
| 98 | }; |
| 99 | |
| 100 | /* |
| 101 | * XXX: We consider a case where IPv6 is not ready yet for portability, |
| 102 | * but PIM dependent defintions should be independent of IPv6... |
| 103 | */ |
| 104 | |
| 105 | struct pim { |
| 106 | u_int8_t pim_typever; |
| 107 | /* upper 4bit: PIM version number; 2 for PIMv2 */ |
| 108 | /* lower 4bit: the PIM message type, currently they are: |
| 109 | * Hello, Register, Register-Stop, Join/Prune, |
| 110 | * Bootstrap, Assert, Graft (PIM-DM only), |
| 111 | * Graft-Ack (PIM-DM only), C-RP-Adv |
| 112 | */ |
| 113 | #define PIM_VER(x) (((x) & 0xf0) >> 4) |
| 114 | #define PIM_TYPE(x) ((x) & 0x0f) |
| 115 | u_char pim_rsv; /* Reserved */ |
| 116 | u_short pim_cksum; /* IP style check sum */ |
| 117 | }; |
| 118 | |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 119 | static void pimv2_print(register const u_char *bp, register u_int len, u_int cksum); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 120 | |
| 121 | static void |
| 122 | pimv1_join_prune_print(register const u_char *bp, register u_int len) |
| 123 | { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 124 | int ngroups, njoin, nprune; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 125 | int njp; |
| 126 | |
| 127 | /* If it's a single group and a single source, use 1-line output. */ |
| 128 | if (TTEST2(bp[0], 30) && bp[11] == 1 && |
| 129 | ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) { |
| 130 | int hold; |
| 131 | |
| 132 | (void)printf(" RPF %s ", ipaddr_string(bp)); |
| 133 | hold = EXTRACT_16BITS(&bp[6]); |
| 134 | if (hold != 180) { |
| 135 | (void)printf("Hold "); |
| 136 | relts_print(hold); |
| 137 | } |
| 138 | (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune", |
| 139 | ipaddr_string(&bp[26]), bp[25] & 0x3f, |
| 140 | ipaddr_string(&bp[12])); |
| 141 | if (EXTRACT_32BITS(&bp[16]) != 0xffffffff) |
| 142 | (void)printf("/%s", ipaddr_string(&bp[16])); |
| 143 | (void)printf(") %s%s %s", |
| 144 | (bp[24] & 0x01) ? "Sparse" : "Dense", |
| 145 | (bp[25] & 0x80) ? " WC" : "", |
| 146 | (bp[25] & 0x40) ? "RP" : "SPT"); |
| 147 | return; |
| 148 | } |
| 149 | |
| 150 | TCHECK2(bp[0], sizeof(struct in_addr)); |
| 151 | if (vflag > 1) |
| 152 | (void)printf("\n"); |
| 153 | (void)printf(" Upstream Nbr: %s", ipaddr_string(bp)); |
| 154 | TCHECK2(bp[6], 2); |
| 155 | if (vflag > 1) |
| 156 | (void)printf("\n"); |
| 157 | (void)printf(" Hold time: "); |
| 158 | relts_print(EXTRACT_16BITS(&bp[6])); |
| 159 | if (vflag < 2) |
| 160 | return; |
| 161 | bp += 8; |
| 162 | len -= 8; |
| 163 | |
| 164 | TCHECK2(bp[0], 4); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 165 | ngroups = bp[3]; |
| 166 | bp += 4; |
| 167 | len -= 4; |
| 168 | while (ngroups--) { |
| 169 | /* |
| 170 | * XXX - does the address have length "addrlen" and the |
| 171 | * mask length "maddrlen"? |
| 172 | */ |
| 173 | TCHECK2(bp[0], sizeof(struct in_addr)); |
| 174 | (void)printf("\n\tGroup: %s", ipaddr_string(bp)); |
| 175 | TCHECK2(bp[4], sizeof(struct in_addr)); |
| 176 | if (EXTRACT_32BITS(&bp[4]) != 0xffffffff) |
| 177 | (void)printf("/%s", ipaddr_string(&bp[4])); |
| 178 | TCHECK2(bp[8], 4); |
| 179 | njoin = EXTRACT_16BITS(&bp[8]); |
| 180 | nprune = EXTRACT_16BITS(&bp[10]); |
| 181 | (void)printf(" joined: %d pruned: %d", njoin, nprune); |
| 182 | bp += 12; |
| 183 | len -= 12; |
| 184 | for (njp = 0; njp < (njoin + nprune); njp++) { |
| 185 | const char *type; |
| 186 | |
| 187 | if (njp < njoin) |
| 188 | type = "Join "; |
| 189 | else |
| 190 | type = "Prune"; |
| 191 | TCHECK2(bp[0], 6); |
| 192 | (void)printf("\n\t%s %s%s%s%s/%d", type, |
| 193 | (bp[0] & 0x01) ? "Sparse " : "Dense ", |
| 194 | (bp[1] & 0x80) ? "WC " : "", |
| 195 | (bp[1] & 0x40) ? "RP " : "SPT ", |
| 196 | ipaddr_string(&bp[2]), bp[1] & 0x3f); |
| 197 | bp += 6; |
| 198 | len -= 6; |
| 199 | } |
| 200 | } |
| 201 | return; |
| 202 | trunc: |
| 203 | (void)printf("[|pim]"); |
| 204 | return; |
| 205 | } |
| 206 | |
| 207 | void |
| 208 | pimv1_print(register const u_char *bp, register u_int len) |
| 209 | { |
| 210 | register const u_char *ep; |
| 211 | register u_char type; |
| 212 | |
| 213 | ep = (const u_char *)snapend; |
| 214 | if (bp >= ep) |
| 215 | return; |
| 216 | |
| 217 | TCHECK(bp[1]); |
| 218 | type = bp[1]; |
| 219 | |
| 220 | switch (type) { |
| 221 | case 0: |
| 222 | (void)printf(" Query"); |
| 223 | if (TTEST(bp[8])) { |
| 224 | switch (bp[8] >> 4) { |
| 225 | case 0: |
| 226 | (void)printf(" Dense-mode"); |
| 227 | break; |
| 228 | case 1: |
| 229 | (void)printf(" Sparse-mode"); |
| 230 | break; |
| 231 | case 2: |
| 232 | (void)printf(" Sparse-Dense-mode"); |
| 233 | break; |
| 234 | default: |
| 235 | (void)printf(" mode-%d", bp[8] >> 4); |
| 236 | break; |
| 237 | } |
| 238 | } |
| 239 | if (vflag) { |
| 240 | TCHECK2(bp[10],2); |
| 241 | (void)printf(" (Hold-time "); |
| 242 | relts_print(EXTRACT_16BITS(&bp[10])); |
| 243 | (void)printf(")"); |
| 244 | } |
| 245 | break; |
| 246 | |
| 247 | case 1: |
| 248 | (void)printf(" Register"); |
| 249 | TCHECK2(bp[8], 20); /* ip header */ |
| 250 | (void)printf(" for %s > %s", ipaddr_string(&bp[20]), |
| 251 | ipaddr_string(&bp[24])); |
| 252 | break; |
| 253 | case 2: |
| 254 | (void)printf(" Register-Stop"); |
| 255 | TCHECK2(bp[12], sizeof(struct in_addr)); |
| 256 | (void)printf(" for %s > %s", ipaddr_string(&bp[8]), |
| 257 | ipaddr_string(&bp[12])); |
| 258 | break; |
| 259 | case 3: |
| 260 | (void)printf(" Join/Prune"); |
| 261 | if (vflag) |
| 262 | pimv1_join_prune_print(&bp[8], len - 8); |
| 263 | break; |
| 264 | case 4: |
| 265 | (void)printf(" RP-reachable"); |
| 266 | if (vflag) { |
| 267 | TCHECK2(bp[22], 2); |
| 268 | (void)printf(" group %s", |
| 269 | ipaddr_string(&bp[8])); |
| 270 | if (EXTRACT_32BITS(&bp[12]) != 0xffffffff) |
| 271 | (void)printf("/%s", ipaddr_string(&bp[12])); |
| 272 | (void)printf(" RP %s hold ", ipaddr_string(&bp[16])); |
| 273 | relts_print(EXTRACT_16BITS(&bp[22])); |
| 274 | } |
| 275 | break; |
| 276 | case 5: |
| 277 | (void)printf(" Assert"); |
| 278 | TCHECK2(bp[16], sizeof(struct in_addr)); |
| 279 | (void)printf(" for %s > %s", ipaddr_string(&bp[16]), |
| 280 | ipaddr_string(&bp[8])); |
| 281 | if (EXTRACT_32BITS(&bp[12]) != 0xffffffff) |
| 282 | (void)printf("/%s", ipaddr_string(&bp[12])); |
| 283 | TCHECK2(bp[24], 4); |
| 284 | (void)printf(" %s pref %d metric %d", |
| 285 | (bp[20] & 0x80) ? "RP-tree" : "SPT", |
| 286 | EXTRACT_32BITS(&bp[20]) & 0x7fffffff, |
| 287 | EXTRACT_32BITS(&bp[24])); |
| 288 | break; |
| 289 | case 6: |
| 290 | (void)printf(" Graft"); |
| 291 | if (vflag) |
| 292 | pimv1_join_prune_print(&bp[8], len - 8); |
| 293 | break; |
| 294 | case 7: |
| 295 | (void)printf(" Graft-ACK"); |
| 296 | if (vflag) |
| 297 | pimv1_join_prune_print(&bp[8], len - 8); |
| 298 | break; |
| 299 | case 8: |
| 300 | (void)printf(" Mode"); |
| 301 | break; |
| 302 | default: |
| 303 | (void)printf(" [type %d]", type); |
| 304 | break; |
| 305 | } |
| 306 | if ((bp[4] >> 4) != 1) |
| 307 | (void)printf(" [v%d]", bp[4] >> 4); |
| 308 | return; |
| 309 | |
| 310 | trunc: |
| 311 | (void)printf("[|pim]"); |
| 312 | return; |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | * auto-RP is a cisco protocol, documented at |
| 317 | * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt |
| 318 | * |
| 319 | * This implements version 1+, dated Sept 9, 1998. |
| 320 | */ |
| 321 | void |
| 322 | cisco_autorp_print(register const u_char *bp, register u_int len) |
| 323 | { |
| 324 | int type; |
| 325 | int numrps; |
| 326 | int hold; |
| 327 | |
| 328 | TCHECK(bp[0]); |
| 329 | (void)printf(" auto-rp "); |
| 330 | type = bp[0]; |
| 331 | switch (type) { |
| 332 | case 0x11: |
| 333 | (void)printf("candidate-advert"); |
| 334 | break; |
| 335 | case 0x12: |
| 336 | (void)printf("mapping"); |
| 337 | break; |
| 338 | default: |
| 339 | (void)printf("type-0x%02x", type); |
| 340 | break; |
| 341 | } |
| 342 | |
| 343 | TCHECK(bp[1]); |
| 344 | numrps = bp[1]; |
| 345 | |
| 346 | TCHECK2(bp[2], 2); |
| 347 | (void)printf(" Hold "); |
| 348 | hold = EXTRACT_16BITS(&bp[2]); |
| 349 | if (hold) |
| 350 | relts_print(EXTRACT_16BITS(&bp[2])); |
| 351 | else |
| 352 | printf("FOREVER"); |
| 353 | |
| 354 | /* Next 4 bytes are reserved. */ |
| 355 | |
| 356 | bp += 8; len -= 8; |
| 357 | |
| 358 | /*XXX skip unless -v? */ |
| 359 | |
| 360 | /* |
| 361 | * Rest of packet: |
| 362 | * numrps entries of the form: |
| 363 | * 32 bits: RP |
| 364 | * 6 bits: reserved |
| 365 | * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2". |
| 366 | * 8 bits: # of entries for this RP |
| 367 | * each entry: 7 bits: reserved, 1 bit: negative, |
| 368 | * 8 bits: mask 32 bits: source |
| 369 | * lather, rinse, repeat. |
| 370 | */ |
| 371 | while (numrps--) { |
| 372 | int nentries; |
| 373 | char s; |
| 374 | |
| 375 | TCHECK2(bp[0], 4); |
| 376 | (void)printf(" RP %s", ipaddr_string(bp)); |
| 377 | TCHECK(bp[4]); |
| 378 | switch (bp[4] & 0x3) { |
| 379 | case 0: printf(" PIMv?"); |
| 380 | break; |
| 381 | case 1: printf(" PIMv1"); |
| 382 | break; |
| 383 | case 2: printf(" PIMv2"); |
| 384 | break; |
| 385 | case 3: printf(" PIMv1+2"); |
| 386 | break; |
| 387 | } |
| 388 | if (bp[4] & 0xfc) |
| 389 | (void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc); |
| 390 | TCHECK(bp[5]); |
| 391 | nentries = bp[5]; |
| 392 | bp += 6; len -= 6; |
| 393 | s = ' '; |
| 394 | for (; nentries; nentries--) { |
| 395 | TCHECK2(bp[0], 6); |
| 396 | (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "", |
| 397 | ipaddr_string(&bp[2]), bp[1]); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 398 | if (bp[0] & 0x02) { |
| 399 | (void)printf(" bidir"); |
| 400 | } |
| 401 | if (bp[0] & 0xfc) { |
| 402 | (void)printf("[rsvd=0x%02x]", bp[0] & 0xfc); |
| 403 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 404 | s = ','; |
| 405 | bp += 6; len -= 6; |
| 406 | } |
| 407 | } |
| 408 | return; |
| 409 | |
| 410 | trunc: |
| 411 | (void)printf("[|autorp]"); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | void |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 416 | pim_print(register const u_char *bp, register u_int len, u_int cksum) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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))); |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 441 | pimv2_print(bp, len, cksum); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 621 | pimv2_print(register const u_char *bp, register u_int len, u_int cksum) |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 641 | printf("(%scorrect)", TTEST2(bp[0], len) && cksum ? "in" : "" ); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | switch (PIM_TYPE(pim->pim_typever)) { |
| 645 | case PIMV2_TYPE_HELLO: |
| 646 | { |
| 647 | u_int16_t otype, olen; |
| 648 | bp += 4; |
| 649 | while (bp < ep) { |
| 650 | TCHECK2(bp[0], 4); |
| 651 | otype = EXTRACT_16BITS(&bp[0]); |
| 652 | olen = EXTRACT_16BITS(&bp[2]); |
| 653 | TCHECK2(bp[0], 4 + olen); |
| 654 | |
| 655 | printf("\n\t %s Option (%u), length %u, Value: ", |
| 656 | tok2str( pimv2_hello_option_values,"Unknown",otype), |
| 657 | otype, |
| 658 | olen); |
| 659 | bp += 4; |
| 660 | |
| 661 | switch (otype) { |
| 662 | case PIMV2_HELLO_OPTION_HOLDTIME: |
| 663 | relts_print(EXTRACT_16BITS(bp)); |
| 664 | break; |
| 665 | |
| 666 | case PIMV2_HELLO_OPTION_LANPRUNEDELAY: |
| 667 | if (olen != 4) { |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 668 | (void)printf("ERROR: Option Length != 4 Bytes (%u)", olen); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 669 | } else { |
| 670 | char t_bit; |
| 671 | u_int16_t lan_delay, override_interval; |
| 672 | lan_delay = EXTRACT_16BITS(bp); |
| 673 | override_interval = EXTRACT_16BITS(bp+2); |
| 674 | t_bit = (lan_delay & 0x8000)? 1 : 0; |
| 675 | lan_delay &= ~0x8000; |
| 676 | (void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms", |
| 677 | t_bit, lan_delay, override_interval); |
| 678 | } |
| 679 | break; |
| 680 | |
| 681 | case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD: |
| 682 | case PIMV2_HELLO_OPTION_DR_PRIORITY: |
| 683 | switch (olen) { |
| 684 | case 0: |
| 685 | printf("Bi-Directional Capability (Old)"); |
| 686 | break; |
| 687 | case 4: |
| 688 | printf("%u", EXTRACT_32BITS(bp)); |
| 689 | break; |
| 690 | default: |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 691 | printf("ERROR: Option Length != 4 Bytes (%u)", olen); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 692 | break; |
| 693 | } |
| 694 | break; |
| 695 | |
| 696 | case PIMV2_HELLO_OPTION_GENID: |
| 697 | (void)printf("0x%08x", EXTRACT_32BITS(bp)); |
| 698 | break; |
| 699 | |
| 700 | case PIMV2_HELLO_OPTION_REFRESH_CAP: |
| 701 | (void)printf("v%d", *bp); |
| 702 | if (*(bp+1) != 0) { |
| 703 | (void)printf(", interval "); |
| 704 | relts_print(*(bp+1)); |
| 705 | } |
| 706 | if (EXTRACT_16BITS(bp+2) != 0) { |
| 707 | (void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2)); |
| 708 | } |
| 709 | break; |
| 710 | |
| 711 | case PIMV2_HELLO_OPTION_BIDIR_CAP: |
| 712 | break; |
| 713 | |
| 714 | case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD: |
| 715 | case PIMV2_HELLO_OPTION_ADDRESS_LIST: |
| 716 | if (vflag > 1) { |
| 717 | const u_char *ptr = bp; |
| 718 | while (ptr < (bp+olen)) { |
| 719 | int advance; |
| 720 | |
| 721 | printf("\n\t "); |
| 722 | advance = pimv2_addr_print(ptr, pimv2_unicast, 0); |
| 723 | if (advance < 0) { |
| 724 | printf("..."); |
| 725 | break; |
| 726 | } |
| 727 | ptr += advance; |
| 728 | } |
| 729 | } |
| 730 | break; |
| 731 | default: |
| 732 | if (vflag <= 1) |
| 733 | print_unknown_data(bp,"\n\t ",olen); |
| 734 | break; |
| 735 | } |
| 736 | /* do we want to see an additionally hexdump ? */ |
| 737 | if (vflag> 1) |
| 738 | print_unknown_data(bp,"\n\t ",olen); |
| 739 | bp += olen; |
| 740 | } |
| 741 | break; |
| 742 | } |
| 743 | |
| 744 | case PIMV2_TYPE_REGISTER: |
| 745 | { |
| 746 | struct ip *ip; |
| 747 | |
| 748 | if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN)) |
| 749 | goto trunc; |
| 750 | |
| 751 | printf(", Flags [ %s ]\n\t", |
| 752 | tok2str(pimv2_register_flag_values, |
| 753 | "none", |
| 754 | EXTRACT_32BITS(bp+4))); |
| 755 | |
| 756 | bp += 8; len -= 8; |
| 757 | /* encapsulated multicast packet */ |
| 758 | ip = (struct ip *)bp; |
| 759 | switch (IP_V(ip)) { |
| 760 | case 0: /* Null header */ |
| 761 | (void)printf("IP-Null-header %s > %s", |
| 762 | ipaddr_string(&ip->ip_src), |
| 763 | ipaddr_string(&ip->ip_dst)); |
| 764 | break; |
| 765 | |
| 766 | case 4: /* IPv4 */ |
| 767 | ip_print(gndo, bp, len); |
| 768 | break; |
| 769 | #ifdef INET6 |
| 770 | case 6: /* IPv6 */ |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 771 | ip6_print(gndo, bp, len); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 772 | break; |
| 773 | #endif |
| 774 | default: |
| 775 | (void)printf("IP ver %d", IP_V(ip)); |
| 776 | break; |
| 777 | } |
| 778 | break; |
| 779 | } |
| 780 | |
| 781 | case PIMV2_TYPE_REGISTER_STOP: |
| 782 | bp += 4; len -= 4; |
| 783 | if (bp >= ep) |
| 784 | break; |
| 785 | (void)printf(" group="); |
| 786 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 787 | (void)printf("..."); |
| 788 | break; |
| 789 | } |
| 790 | bp += advance; len -= advance; |
| 791 | if (bp >= ep) |
| 792 | break; |
| 793 | (void)printf(" source="); |
| 794 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 795 | (void)printf("..."); |
| 796 | break; |
| 797 | } |
| 798 | bp += advance; len -= advance; |
| 799 | break; |
| 800 | |
| 801 | case PIMV2_TYPE_JOIN_PRUNE: |
| 802 | case PIMV2_TYPE_GRAFT: |
| 803 | case PIMV2_TYPE_GRAFT_ACK: |
| 804 | |
| 805 | |
| 806 | /* |
| 807 | * 0 1 2 3 |
| 808 | * 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 |
| 809 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 810 | * |PIM Ver| Type | Addr length | Checksum | |
| 811 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 812 | * | Unicast-Upstream Neighbor Address | |
| 813 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 814 | * | Reserved | Num groups | Holdtime | |
| 815 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 816 | * | Encoded-Multicast Group Address-1 | |
| 817 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 818 | * | Number of Joined Sources | Number of Pruned Sources | |
| 819 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 820 | * | Encoded-Joined Source Address-1 | |
| 821 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 822 | * | . | |
| 823 | * | . | |
| 824 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 825 | * | Encoded-Joined Source Address-n | |
| 826 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 827 | * | Encoded-Pruned Source Address-1 | |
| 828 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 829 | * | . | |
| 830 | * | . | |
| 831 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 832 | * | Encoded-Pruned Source Address-n | |
| 833 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 834 | * | . | |
| 835 | * | . | |
| 836 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 837 | * | Encoded-Multicast Group Address-n | |
| 838 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 839 | */ |
| 840 | |
| 841 | { |
| 842 | u_int8_t ngroup; |
| 843 | u_int16_t holdtime; |
| 844 | u_int16_t njoin; |
| 845 | u_int16_t nprune; |
| 846 | int i, j; |
| 847 | |
| 848 | bp += 4; len -= 4; |
| 849 | if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/ |
| 850 | if (bp >= ep) |
| 851 | break; |
| 852 | (void)printf(", upstream-neighbor: "); |
| 853 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 854 | (void)printf("..."); |
| 855 | break; |
| 856 | } |
| 857 | bp += advance; len -= advance; |
| 858 | } |
| 859 | if (bp + 4 > ep) |
| 860 | break; |
| 861 | ngroup = bp[1]; |
| 862 | holdtime = EXTRACT_16BITS(&bp[2]); |
| 863 | (void)printf("\n\t %u group(s)", ngroup); |
| 864 | if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/ |
| 865 | (void)printf(", holdtime: "); |
| 866 | if (holdtime == 0xffff) |
| 867 | (void)printf("infinite"); |
| 868 | else |
| 869 | relts_print(holdtime); |
| 870 | } |
| 871 | bp += 4; len -= 4; |
| 872 | for (i = 0; i < ngroup; i++) { |
| 873 | if (bp >= ep) |
| 874 | goto jp_done; |
| 875 | (void)printf("\n\t group #%u: ", i+1); |
| 876 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 877 | (void)printf("...)"); |
| 878 | goto jp_done; |
| 879 | } |
| 880 | bp += advance; len -= advance; |
| 881 | if (bp + 4 > ep) { |
| 882 | (void)printf("...)"); |
| 883 | goto jp_done; |
| 884 | } |
| 885 | njoin = EXTRACT_16BITS(&bp[0]); |
| 886 | nprune = EXTRACT_16BITS(&bp[2]); |
| 887 | (void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune); |
| 888 | bp += 4; len -= 4; |
| 889 | for (j = 0; j < njoin; j++) { |
| 890 | (void)printf("\n\t joined source #%u: ",j+1); |
| 891 | if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) { |
| 892 | (void)printf("...)"); |
| 893 | goto jp_done; |
| 894 | } |
| 895 | bp += advance; len -= advance; |
| 896 | } |
| 897 | for (j = 0; j < nprune; j++) { |
| 898 | (void)printf("\n\t pruned source #%u: ",j+1); |
| 899 | if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) { |
| 900 | (void)printf("...)"); |
| 901 | goto jp_done; |
| 902 | } |
| 903 | bp += advance; len -= advance; |
| 904 | } |
| 905 | } |
| 906 | jp_done: |
| 907 | break; |
| 908 | } |
| 909 | |
| 910 | case PIMV2_TYPE_BOOTSTRAP: |
| 911 | { |
| 912 | int i, j, frpcnt; |
| 913 | bp += 4; |
| 914 | |
| 915 | /* Fragment Tag, Hash Mask len, and BSR-priority */ |
| 916 | if (bp + sizeof(u_int16_t) >= ep) break; |
| 917 | (void)printf(" tag=%x", EXTRACT_16BITS(bp)); |
| 918 | bp += sizeof(u_int16_t); |
| 919 | if (bp >= ep) break; |
| 920 | (void)printf(" hashmlen=%d", bp[0]); |
| 921 | if (bp + 1 >= ep) break; |
| 922 | (void)printf(" BSRprio=%d", bp[1]); |
| 923 | bp += 2; |
| 924 | |
| 925 | /* Encoded-Unicast-BSR-Address */ |
| 926 | if (bp >= ep) break; |
| 927 | (void)printf(" BSR="); |
| 928 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 929 | (void)printf("..."); |
| 930 | break; |
| 931 | } |
| 932 | bp += advance; |
| 933 | |
| 934 | for (i = 0; bp < ep; i++) { |
| 935 | /* Encoded-Group Address */ |
| 936 | (void)printf(" (group%d: ", i); |
| 937 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) |
| 938 | < 0) { |
| 939 | (void)printf("...)"); |
| 940 | goto bs_done; |
| 941 | } |
| 942 | bp += advance; |
| 943 | |
| 944 | /* RP-Count, Frag RP-Cnt, and rsvd */ |
| 945 | if (bp >= ep) { |
| 946 | (void)printf("...)"); |
| 947 | goto bs_done; |
| 948 | } |
| 949 | (void)printf(" RPcnt=%d", bp[0]); |
| 950 | if (bp + 1 >= ep) { |
| 951 | (void)printf("...)"); |
| 952 | goto bs_done; |
| 953 | } |
| 954 | (void)printf(" FRPcnt=%d", frpcnt = bp[1]); |
| 955 | bp += 4; |
| 956 | |
| 957 | for (j = 0; j < frpcnt && bp < ep; j++) { |
| 958 | /* each RP info */ |
| 959 | (void)printf(" RP%d=", j); |
| 960 | if ((advance = pimv2_addr_print(bp, |
| 961 | pimv2_unicast, |
| 962 | 0)) < 0) { |
| 963 | (void)printf("...)"); |
| 964 | goto bs_done; |
| 965 | } |
| 966 | bp += advance; |
| 967 | |
| 968 | if (bp + 1 >= ep) { |
| 969 | (void)printf("...)"); |
| 970 | goto bs_done; |
| 971 | } |
| 972 | (void)printf(",holdtime="); |
| 973 | relts_print(EXTRACT_16BITS(bp)); |
| 974 | if (bp + 2 >= ep) { |
| 975 | (void)printf("...)"); |
| 976 | goto bs_done; |
| 977 | } |
| 978 | (void)printf(",prio=%d", bp[2]); |
| 979 | bp += 4; |
| 980 | } |
| 981 | (void)printf(")"); |
| 982 | } |
| 983 | bs_done: |
| 984 | break; |
| 985 | } |
| 986 | case PIMV2_TYPE_ASSERT: |
| 987 | bp += 4; len -= 4; |
| 988 | if (bp >= ep) |
| 989 | break; |
| 990 | (void)printf(" group="); |
| 991 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 992 | (void)printf("..."); |
| 993 | break; |
| 994 | } |
| 995 | bp += advance; len -= advance; |
| 996 | if (bp >= ep) |
| 997 | break; |
| 998 | (void)printf(" src="); |
| 999 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1000 | (void)printf("..."); |
| 1001 | break; |
| 1002 | } |
| 1003 | bp += advance; len -= advance; |
| 1004 | if (bp + 8 > ep) |
| 1005 | break; |
| 1006 | if (bp[0] & 0x80) |
| 1007 | (void)printf(" RPT"); |
| 1008 | (void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff); |
| 1009 | (void)printf(" metric=%u", EXTRACT_32BITS(&bp[4])); |
| 1010 | break; |
| 1011 | |
| 1012 | case PIMV2_TYPE_CANDIDATE_RP: |
| 1013 | { |
| 1014 | int i, pfxcnt; |
| 1015 | bp += 4; |
| 1016 | |
| 1017 | /* Prefix-Cnt, Priority, and Holdtime */ |
| 1018 | if (bp >= ep) break; |
| 1019 | (void)printf(" prefix-cnt=%d", bp[0]); |
| 1020 | pfxcnt = bp[0]; |
| 1021 | if (bp + 1 >= ep) break; |
| 1022 | (void)printf(" prio=%d", bp[1]); |
| 1023 | if (bp + 3 >= ep) break; |
| 1024 | (void)printf(" holdtime="); |
| 1025 | relts_print(EXTRACT_16BITS(&bp[2])); |
| 1026 | bp += 4; |
| 1027 | |
| 1028 | /* Encoded-Unicast-RP-Address */ |
| 1029 | if (bp >= ep) break; |
| 1030 | (void)printf(" RP="); |
| 1031 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1032 | (void)printf("..."); |
| 1033 | break; |
| 1034 | } |
| 1035 | bp += advance; |
| 1036 | |
| 1037 | /* Encoded-Group Addresses */ |
| 1038 | for (i = 0; i < pfxcnt && bp < ep; i++) { |
| 1039 | (void)printf(" Group%d=", i); |
| 1040 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) |
| 1041 | < 0) { |
| 1042 | (void)printf("..."); |
| 1043 | break; |
| 1044 | } |
| 1045 | bp += advance; |
| 1046 | } |
| 1047 | break; |
| 1048 | } |
| 1049 | |
| 1050 | case PIMV2_TYPE_PRUNE_REFRESH: |
| 1051 | (void)printf(" src="); |
| 1052 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1053 | (void)printf("..."); |
| 1054 | break; |
| 1055 | } |
| 1056 | bp += advance; |
| 1057 | (void)printf(" grp="); |
| 1058 | if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) { |
| 1059 | (void)printf("..."); |
| 1060 | break; |
| 1061 | } |
| 1062 | bp += advance; |
| 1063 | (void)printf(" forwarder="); |
| 1064 | if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) { |
| 1065 | (void)printf("..."); |
| 1066 | break; |
| 1067 | } |
| 1068 | bp += advance; |
| 1069 | TCHECK2(bp[0], 2); |
| 1070 | (void)printf(" TUNR "); |
| 1071 | relts_print(EXTRACT_16BITS(bp)); |
| 1072 | break; |
| 1073 | |
| 1074 | |
| 1075 | default: |
| 1076 | (void)printf(" [type %d]", PIM_TYPE(pim->pim_typever)); |
| 1077 | break; |
| 1078 | } |
| 1079 | |
| 1080 | return; |
| 1081 | |
| 1082 | trunc: |
| 1083 | (void)printf("[|pim]"); |
| 1084 | } |
| 1085 | |
| 1086 | /* |
| 1087 | * Local Variables: |
| 1088 | * c-style: whitesmith |
| 1089 | * c-basic-offset: 8 |
| 1090 | * End: |
| 1091 | */ |