1 /* $OpenBSD: print-udp.c,v 1.34 2010/01/12 06:10:33 naddy Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that: (1) source code distributions 9 * retain the above copyright notice and this paragraph in its entirety, (2) 10 * distributions including binary code include the above copyright notice and 11 * this paragraph in its entirety in the documentation or other materials 12 * provided with the distribution, and (3) all advertising materials mentioning 13 * features or use of this software display the following acknowledgement: 14 * ``This product includes software developed by the University of California, 15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 16 * the University nor the names of its contributors may be used to endorse 17 * or promote products derived from this software without specific prior 18 * written permission. 19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 22 */ 23 24 #include <sys/param.h> 25 #include <sys/time.h> 26 #include <sys/socket.h> 27 28 #include <netinet/in.h> 29 #include <netinet/in_systm.h> 30 #include <netinet/ip.h> 31 #include <netinet/ip_var.h> 32 #include <netinet/udp.h> 33 #include <netinet/udp_var.h> 34 35 #include <net80211/ieee80211.h> 36 37 #ifdef NOERROR 38 #undef NOERROR /* Solaris sucks */ 39 #endif 40 #ifdef T_UNSPEC 41 #undef T_UNSPEC /* SINIX does too */ 42 #endif 43 #include <arpa/nameser.h> 44 #ifdef SEGSIZE 45 #undef SEGSIZE 46 #endif 47 #include <arpa/tftp.h> 48 49 #include <rpc/rpc.h> 50 51 #include <stdio.h> 52 #include <string.h> 53 54 #ifdef INET6 55 #include <netinet/ip6.h> 56 #endif 57 58 #include "interface.h" 59 #include "addrtoname.h" 60 #include "appletalk.h" 61 62 #include "nfsv2.h" 63 #include "bootp.h" 64 #include "iapp.h" 65 66 struct rtcphdr { 67 u_short rh_flags; /* T:2 P:1 CNT:5 PT:8 */ 68 u_short rh_len; /* length of message (in words) */ 69 u_int rh_ssrc; /* synchronization src id */ 70 }; 71 72 typedef struct { 73 u_int upper; /* more significant 32 bits */ 74 u_int lower; /* less significant 32 bits */ 75 } ntp64; 76 77 /* 78 * Sender report. 79 */ 80 struct rtcp_sr { 81 ntp64 sr_ntp; /* 64-bit ntp timestamp */ 82 u_int sr_ts; /* reference media timestamp */ 83 u_int sr_np; /* no. packets sent */ 84 u_int sr_nb; /* no. bytes sent */ 85 }; 86 87 /* 88 * Receiver report. 89 * Time stamps are middle 32-bits of ntp timestamp. 90 */ 91 struct rtcp_rr { 92 u_int rr_srcid; /* sender being reported */ 93 u_int rr_nl; /* no. packets lost */ 94 u_int rr_ls; /* extended last seq number received */ 95 u_int rr_dv; /* jitter (delay variance) */ 96 u_int rr_lsr; /* orig. ts from last rr from this src */ 97 u_int rr_dlsr; /* time from recpt of last rr to xmit time */ 98 }; 99 100 /*XXX*/ 101 #define RTCP_PT_SR 200 102 #define RTCP_PT_RR 201 103 #define RTCP_PT_SDES 202 104 #define RTCP_SDES_CNAME 1 105 #define RTCP_SDES_NAME 2 106 #define RTCP_SDES_EMAIL 3 107 #define RTCP_SDES_PHONE 4 108 #define RTCP_SDES_LOC 5 109 #define RTCP_SDES_TOOL 6 110 #define RTCP_SDES_NOTE 7 111 #define RTCP_SDES_PRIV 8 112 #define RTCP_PT_BYE 203 113 #define RTCP_PT_APP 204 114 115 static void 116 vat_print(const void *hdr, u_int len, register const struct udphdr *up) 117 { 118 /* vat/vt audio */ 119 u_int ts = *(u_short *)hdr; 120 if ((ts & 0xf060) != 0) { 121 /* probably vt */ 122 (void)printf(" udp/vt %u %d / %d", 123 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up)), 124 ts & 0x3ff, ts >> 10); 125 } else { 126 /* probably vat */ 127 u_int i0 = ntohl(((u_int *)hdr)[0]); 128 u_int i1 = ntohl(((u_int *)hdr)[1]); 129 printf(" udp/vat %u c%d %u%s", 130 (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8), 131 i0 & 0xffff, 132 i1, i0 & 0x800000? "*" : ""); 133 /* audio format */ 134 if (i0 & 0x1f0000) 135 printf(" f%d", (i0 >> 16) & 0x1f); 136 if (i0 & 0x3f000000) 137 printf(" s%d", (i0 >> 24) & 0x3f); 138 } 139 } 140 141 static void 142 rtp_print(const void *hdr, u_int len, register const struct udphdr *up) 143 { 144 /* rtp v1 or v2 */ 145 u_int *ip = (u_int *)hdr; 146 u_int hasopt, hasext, contype, hasmarker; 147 u_int i0 = ntohl(((u_int *)hdr)[0]); 148 u_int i1 = ntohl(((u_int *)hdr)[1]); 149 u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8; 150 const char * ptype; 151 152 ip += 2; 153 len >>= 2; 154 len -= 2; 155 hasopt = 0; 156 hasext = 0; 157 if ((i0 >> 30) == 1) { 158 /* rtp v1 */ 159 hasopt = i0 & 0x800000; 160 contype = (i0 >> 16) & 0x3f; 161 hasmarker = i0 & 0x400000; 162 ptype = "rtpv1"; 163 } else { 164 /* rtp v2 */ 165 hasext = i0 & 0x10000000; 166 contype = (i0 >> 16) & 0x7f; 167 hasmarker = i0 & 0x800000; 168 dlen -= 4; 169 ptype = "rtp"; 170 ip += 1; 171 len -= 1; 172 } 173 printf(" udp/%s %d c%d %s%s %d %u", 174 ptype, 175 dlen, 176 contype, 177 (hasopt || hasext)? "+" : "", 178 hasmarker? "*" : "", 179 i0 & 0xffff, 180 i1); 181 if (vflag) { 182 printf(" %u", i1); 183 if (hasopt) { 184 u_int i2, optlen; 185 do { 186 i2 = ip[0]; 187 optlen = (i2 >> 16) & 0xff; 188 if (optlen == 0 || optlen > len) { 189 printf(" !opt"); 190 return; 191 } 192 ip += optlen; 193 len -= optlen; 194 } while ((int)i2 >= 0); 195 } 196 if (hasext) { 197 u_int i2, extlen; 198 i2 = ip[0]; 199 extlen = (i2 & 0xffff) + 1; 200 if (extlen > len) { 201 printf(" !ext"); 202 return; 203 } 204 ip += extlen; 205 } 206 if (contype == 0x1f) /*XXX H.261 */ 207 printf(" 0x%04x", ip[0] >> 16); 208 } 209 } 210 211 static const u_char * 212 rtcp_print(const u_char *hdr, const u_char *ep) 213 { 214 /* rtp v2 control (rtcp) */ 215 struct rtcp_rr *rr = 0; 216 struct rtcp_sr *sr; 217 struct rtcphdr *rh = (struct rtcphdr *)hdr; 218 u_int len; 219 u_short flags; 220 int cnt; 221 double ts, dts; 222 if ((u_char *)(rh + 1) > ep) { 223 printf(" [|rtcp]"); 224 return (ep); 225 } 226 len = (ntohs(rh->rh_len) + 1) * 4; 227 flags = ntohs(rh->rh_flags); 228 cnt = (flags >> 8) & 0x1f; 229 switch (flags & 0xff) { 230 case RTCP_PT_SR: 231 sr = (struct rtcp_sr *)(rh + 1); 232 printf(" sr"); 233 if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh)) 234 printf(" [%d]", len); 235 if (vflag) 236 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc)); 237 if ((u_char *)(sr + 1) > ep) { 238 printf(" [|rtcp]"); 239 return (ep); 240 } 241 ts = (double)((u_int32_t)ntohl(sr->sr_ntp.upper)) + 242 ((double)((u_int32_t)ntohl(sr->sr_ntp.lower)) / 243 4294967296.0); 244 printf(" @%.2f %u %up %ub", ts, (u_int32_t)ntohl(sr->sr_ts), 245 (u_int32_t)ntohl(sr->sr_np), (u_int32_t)ntohl(sr->sr_nb)); 246 rr = (struct rtcp_rr *)(sr + 1); 247 break; 248 case RTCP_PT_RR: 249 printf(" rr"); 250 if (len != cnt * sizeof(*rr) + sizeof(*rh)) 251 printf(" [%d]", len); 252 rr = (struct rtcp_rr *)(rh + 1); 253 if (vflag) 254 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc)); 255 break; 256 case RTCP_PT_SDES: 257 printf(" sdes %d", len); 258 if (vflag) 259 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc)); 260 cnt = 0; 261 break; 262 case RTCP_PT_BYE: 263 printf(" bye %d", len); 264 if (vflag) 265 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc)); 266 cnt = 0; 267 break; 268 default: 269 printf(" type-0x%x %d", flags & 0xff, len); 270 cnt = 0; 271 break; 272 } 273 if (cnt > 1) 274 printf(" c%d", cnt); 275 while (--cnt >= 0) { 276 if ((u_char *)(rr + 1) > ep) { 277 printf(" [|rtcp]"); 278 return (ep); 279 } 280 if (vflag) 281 printf(" %u", (u_int32_t)ntohl(rr->rr_srcid)); 282 ts = (double)((u_int32_t)ntohl(rr->rr_lsr)) / 65536.; 283 dts = (double)((u_int32_t)ntohl(rr->rr_dlsr)) / 65536.; 284 printf(" %ul %us %uj @%.2f+%.2f", 285 (u_int32_t)ntohl(rr->rr_nl) & 0x00ffffff, 286 (u_int32_t)ntohl(rr->rr_ls), 287 (u_int32_t)ntohl(rr->rr_dv), ts, dts); 288 } 289 return (hdr + len); 290 } 291 292 static int udp_cksum(const struct ip *ip, const struct udphdr *up, int len) 293 { 294 union phu { 295 struct phdr { 296 u_int32_t src; 297 u_int32_t dst; 298 u_char mbz; 299 u_char proto; 300 u_int16_t len; 301 } ph; 302 u_int16_t pa[6]; 303 } phu; 304 const u_int16_t *sp; 305 u_int32_t sum; 306 307 /* pseudo-header.. */ 308 phu.ph.len = htons((u_int16_t)len); 309 phu.ph.mbz = 0; 310 phu.ph.proto = IPPROTO_UDP; 311 memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t)); 312 memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t)); 313 314 sp = &phu.pa[0]; 315 sum = sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]; 316 317 return in_cksum((u_short *)up, len, sum); 318 } 319 320 #ifdef INET6 321 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up, 322 u_int len) 323 { 324 union { 325 struct { 326 struct in6_addr ph_src; 327 struct in6_addr ph_dst; 328 u_int32_t ph_len; 329 u_int8_t ph_zero[3]; 330 u_int8_t ph_nxt; 331 } ph; 332 u_int16_t pa[20]; 333 } phu; 334 size_t i; 335 u_int32_t sum = 0; 336 337 /* pseudo-header */ 338 memset(&phu, 0, sizeof(phu)); 339 phu.ph.ph_src = ip6->ip6_src; 340 phu.ph.ph_dst = ip6->ip6_dst; 341 phu.ph.ph_len = htonl(len); 342 phu.ph.ph_nxt = IPPROTO_UDP; 343 344 for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++) 345 sum += phu.pa[i]; 346 347 return in_cksum((u_short *)up, len, sum); 348 } 349 #endif 350 351 352 353 /* XXX probably should use getservbyname() and cache answers */ 354 #define TFTP_PORT 69 /*XXX*/ 355 #define KERBEROS_PORT 88 /*XXX*/ 356 #define SUNRPC_PORT 111 /*XXX*/ 357 #define NTP_PORT 123 /*XXX*/ 358 #define NETBIOS_NS_PORT 137 /*XXX*/ 359 #define NETBIOS_DGRAM_PORT 138 /*XXX*/ 360 #define SNMP_PORT 161 /*XXX*/ 361 #define SNMPTRAP_PORT 162 /*XXX*/ 362 #define ISAKMP_PORT 500 /*XXX*/ 363 #define RIP_PORT 520 /*XXX*/ 364 #define TIMED_PORT 525 /*XXX*/ 365 #define KERBEROS_SEC_PORT 750 /*XXX*/ 366 #define LWRES_PORT 921 367 #define VQP_PORT 1589 368 #define OLD_RADIUS_AUTH_PORT 1645 369 #define OLD_RADIUS_ACCT_PORT 1646 370 #define L2TP_PORT 1701 /*XXX*/ 371 #define RADIUS_AUTH_PORT 1812 372 #define RADIUS_ACCT_PORT 1813 373 #define HSRP_PORT 1985 /*XXX*/ 374 #define GTP_C_PORT 2123 375 #define GTP_U_PORT 2152 376 #define GTP_PRIME_PORT 3386 377 #define UDPENCAP_PORT 4500 /*XXX*/ 378 #define MULTICASTDNS_PORT 5353 379 380 #ifdef INET6 381 #define RIPNG_PORT 521 /*XXX*/ 382 #define DHCP6_PORT1 546 /*XXX*/ 383 #define DHCP6_PORT2 547 /*XXX*/ 384 #endif 385 386 void 387 udp_print(register const u_char *bp, u_int length, register const u_char *bp2) 388 { 389 register const struct udphdr *up; 390 register const struct ip *ip; 391 register const u_char *cp; 392 register const u_char *ep = bp + length; 393 u_int16_t sport, dport, ulen; 394 #ifdef INET6 395 register const struct ip6_hdr *ip6; 396 #endif 397 398 if (ep > snapend) 399 ep = snapend; 400 up = (struct udphdr *)bp; 401 ip = (struct ip *)bp2; 402 #ifdef INET6 403 if (ip->ip_v == 6) 404 ip6 = (struct ip6_hdr *)bp2; 405 else 406 ip6 = NULL; 407 #endif /*INET6*/ 408 cp = (u_char *)(up + 1); 409 if (cp > snapend) { 410 printf("[|udp]"); 411 return; 412 } 413 if (length < sizeof(struct udphdr)) { 414 (void)printf(" truncated-udp %d", length); 415 return; 416 } 417 length -= sizeof(struct udphdr); 418 419 sport = ntohs(up->uh_sport); 420 dport = ntohs(up->uh_dport); 421 ulen = ntohs(up->uh_ulen); 422 if (packettype) { 423 register struct rpc_msg *rp; 424 enum msg_type direction; 425 426 switch (packettype) { 427 428 case PT_VAT: 429 (void)printf("%s.%s > %s.%s:", 430 ipaddr_string(&ip->ip_src), 431 udpport_string(sport), 432 ipaddr_string(&ip->ip_dst), 433 udpport_string(dport)); 434 vat_print((void *)(up + 1), length, up); 435 break; 436 437 case PT_WB: 438 (void)printf("%s.%s > %s.%s:", 439 ipaddr_string(&ip->ip_src), 440 udpport_string(sport), 441 ipaddr_string(&ip->ip_dst), 442 udpport_string(dport)); 443 wb_print((void *)(up + 1), length); 444 break; 445 446 case PT_RPC: 447 (void)printf("%s.%s > %s.%s: ", 448 ipaddr_string(&ip->ip_src), 449 udpport_string(sport), 450 ipaddr_string(&ip->ip_dst), 451 udpport_string(dport)); 452 rp = (struct rpc_msg *)(up + 1); 453 direction = (enum msg_type)ntohl(rp->rm_direction); 454 if (direction == CALL) 455 sunrpcrequest_print((u_char *)rp, length, 456 (u_char *)ip); 457 else 458 nfsreply_print((u_char *)rp, length, 459 (u_char *)ip); /*XXX*/ 460 break; 461 462 case PT_RTP: 463 (void)printf("%s.%s > %s.%s:", 464 ipaddr_string(&ip->ip_src), 465 udpport_string(sport), 466 ipaddr_string(&ip->ip_dst), 467 udpport_string(dport)); 468 rtp_print((void *)(up + 1), length, up); 469 break; 470 471 case PT_RTCP: 472 (void)printf("%s.%s > %s.%s:", 473 ipaddr_string(&ip->ip_src), 474 udpport_string(sport), 475 ipaddr_string(&ip->ip_dst), 476 udpport_string(dport)); 477 while (cp < ep) 478 cp = rtcp_print(cp, ep); 479 break; 480 case PT_CNFP: 481 cnfp_print(cp, length, (u_char *)ip); 482 break; 483 } 484 return; 485 } 486 487 if (!qflag) { 488 register struct rpc_msg *rp; 489 enum msg_type direction; 490 491 rp = (struct rpc_msg *)(up + 1); 492 if (TTEST(rp->rm_direction)) { 493 direction = (enum msg_type)ntohl(rp->rm_direction); 494 if (dport == NFS_PORT && direction == CALL) { 495 (void)printf("%s.%s > %s.%s: ", 496 ipaddr_string(&ip->ip_src), 497 udpport_string(sport), 498 ipaddr_string(&ip->ip_dst), 499 udpport_string(dport)); 500 nfsreq_print((u_char *)rp, length, 501 (u_char *)ip); 502 return; 503 } 504 if (sport == NFS_PORT && direction == REPLY) { 505 (void)printf("%s.%s > %s.%s: ", 506 ipaddr_string(&ip->ip_src), 507 udpport_string(sport), 508 ipaddr_string(&ip->ip_dst), 509 udpport_string(dport)); 510 nfsreply_print((u_char *)rp, length, 511 (u_char *)ip); 512 return; 513 } 514 #ifdef notdef 515 if (dport == SUNRPC_PORT && direction == CALL) { 516 (void)printf("%s.%s > %s.%s: ", 517 ipaddr_string(&ip->ip_src), 518 udpport_string(sport), 519 ipaddr_string(&ip->ip_dst), 520 udpport_string(dport)); 521 sunrpcrequest_print((u_char *)rp, length, (u_char *)ip); 522 return; 523 } 524 #endif 525 } 526 if (TTEST(((struct LAP *)cp)->type) && 527 ((struct LAP *)cp)->type == lapDDP && 528 (atalk_port(sport) || atalk_port(dport))) { 529 if (vflag) 530 fputs("kip ", stdout); 531 atalk_print_llap(cp, length); 532 return; 533 } 534 } 535 #if 0 536 (void)printf("%s.%s > %s.%s:", 537 ipaddr_string(&ip->ip_src), udpport_string(sport), 538 ipaddr_string(&ip->ip_dst), udpport_string(dport)); 539 #else 540 #ifdef INET6 541 if (ip6) { 542 if (ip6->ip6_nxt == IPPROTO_UDP) { 543 (void)printf("%s.%s > %s.%s:", 544 ip6addr_string(&ip6->ip6_src), 545 udpport_string(sport), 546 ip6addr_string(&ip6->ip6_dst), 547 udpport_string(dport)); 548 } else { 549 (void)printf("%s > %s: ", 550 udpport_string(sport), udpport_string(dport)); 551 } 552 } else 553 #endif /*INET6*/ 554 { 555 if (ip->ip_p == IPPROTO_UDP) { 556 (void)printf("%s.%s > %s.%s:", 557 ipaddr_string(&ip->ip_src), 558 udpport_string(sport), 559 ipaddr_string(&ip->ip_dst), 560 udpport_string(dport)); 561 } else { 562 (void)printf("%s > %s:", 563 udpport_string(sport), udpport_string(dport)); 564 } 565 } 566 #endif 567 568 if (ip->ip_v == 4 && vflag) { 569 int sum = up->uh_sum; 570 if (sum == 0) { 571 (void)printf(" [no cksum]"); 572 } else if (TTEST2(cp[0], length)) { 573 sum = udp_cksum(ip, up, length + sizeof(struct udphdr)); 574 if (sum != 0) 575 (void)printf(" [bad udp cksum %x!]", sum); 576 else 577 (void)printf(" [udp sum ok]"); 578 } 579 } 580 #ifdef INET6 581 if (ip->ip_v == 6 && ip6->ip6_plen && vflag) { 582 int sum = up->uh_sum; 583 /* for IPv6, UDP checksum is mandatory */ 584 if (TTEST2(cp[0], length)) { 585 sum = udp6_cksum(ip6, up, length + sizeof(struct udphdr)); 586 if (sum != 0) 587 (void)printf(" [bad udp cksum %x!]", sum); 588 else 589 (void)printf(" [udp sum ok]"); 590 } 591 } 592 #endif 593 594 if (!qflag) { 595 #define ISPORT(p) (dport == (p) || sport == (p)) 596 if (ISPORT(NAMESERVER_PORT)) 597 ns_print((const u_char *)(up + 1), length, 0); 598 else if (ISPORT(MULTICASTDNS_PORT)) 599 ns_print((const u_char *)(up + 1), length, 1); 600 else if (ISPORT(LWRES_PORT)) 601 lwres_print((const u_char *)(up + 1), length); 602 else if (ISPORT(TIMED_PORT)) 603 timed_print((const u_char *)(up + 1), length); 604 else if (ISPORT(TFTP_PORT)) 605 tftp_print((const u_char *)(up + 1), length); 606 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS)) 607 bootp_print((const u_char *)(up + 1), length, 608 sport, dport); 609 else if (ISPORT(RIP_PORT)) 610 rip_print((const u_char *)(up + 1), length); 611 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT)) 612 snmp_print((const u_char *)(up + 1), length); 613 else if (ISPORT(NTP_PORT)) 614 ntp_print((const u_char *)(up + 1), length); 615 else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT)) 616 krb_print((const void *)(up + 1), length); 617 else if (ISPORT(L2TP_PORT)) 618 l2tp_print((const u_char *)(up + 1), length); 619 else if (ISPORT(UDPENCAP_PORT)) 620 udpencap_print((const u_char *)(up + 1), length, bp2); 621 else if (ISPORT(ISAKMP_PORT)) 622 ike_print((const u_char *)(up + 1), length); 623 #if 0 624 else if (ISPORT(NETBIOS_NS_PORT)) 625 nbt_udp137_print((const u_char *)(up + 1), length); 626 else if (ISPORT(NETBIOS_DGRAM_PORT)) 627 nbt_udp138_print((const u_char *)(up + 1), length); 628 #endif 629 else if (ISPORT(OLD_RADIUS_AUTH_PORT) || 630 ISPORT(OLD_RADIUS_ACCT_PORT) || 631 ISPORT(RADIUS_AUTH_PORT) || 632 ISPORT(RADIUS_ACCT_PORT)) 633 radius_print((const u_char *)(up + 1), length); 634 else if (dport == 3456) 635 vat_print((const void *)(up + 1), length, up); 636 else if (ISPORT(IAPP_PORT) || ISPORT(IAPP_OLD_PORT)) 637 iapp_print((const u_char *)(up + 1), length); 638 else if (ISPORT(VQP_PORT)) 639 vqp_print((const u_char *)(up + 1), length); 640 #ifdef INET6 641 else if (ISPORT(RIPNG_PORT)) 642 ripng_print((const u_char *)(up + 1), length); 643 else if (ISPORT(DHCP6_PORT1) || ISPORT(DHCP6_PORT2)) { 644 dhcp6_print((const u_char *)(up + 1), length, 645 sport, dport); 646 } 647 #endif /*INET6*/ 648 else if (ISPORT(GTP_C_PORT) || ISPORT(GTP_U_PORT) || 649 ISPORT(GTP_PRIME_PORT)) 650 gtp_print((const u_char *)(up + 1), length, 651 sport, dport); 652 /* 653 * Kludge in test for whiteboard packets. 654 */ 655 else if (dport == 4567) 656 wb_print((const void *)(up + 1), length); 657 else if (dport == HSRP_PORT) 658 hsrp_print((const u_char *)(up + 1), length); 659 else 660 (void)printf(" udp %u", 661 (u_int32_t)(ulen - sizeof(*up))); 662 #undef ISPORT 663 } else 664 (void)printf(" udp %u", (u_int32_t)(ulen - sizeof(*up))); 665 } 666