1 /* 2 * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * Format and print bootp packets. 22 * 23 * $FreeBSD$ 24 */ 25 #ifndef lint 26 static const char rcsid[] _U_ = 27 "@(#) $Header: /tcpdump/master/tcpdump/print-bootp.c,v 1.78.2.9 2007/08/21 22:02:08 guy Exp $ (LBL)"; 28 #endif 29 30 #ifdef HAVE_CONFIG_H 31 #include "config.h" 32 #endif 33 34 #include <tcpdump-stdinc.h> 35 36 #include <stdio.h> 37 #include <string.h> 38 39 #include "interface.h" 40 #include "addrtoname.h" 41 #include "extract.h" 42 #include "ether.h" 43 #include "bootp.h" 44 45 static void rfc1048_print(const u_char *); 46 static void cmu_print(const u_char *); 47 static char *client_fqdn_flags(u_int flags); 48 49 static char tstr[] = " [|bootp]"; 50 51 static const struct tok bootp_flag_values[] = { 52 { 0x8000, "Broadcast" }, 53 { 0, NULL} 54 }; 55 56 static const struct tok bootp_op_values[] = { 57 { BOOTPREQUEST, "Request" }, 58 { BOOTPREPLY, "Reply" }, 59 { 0, NULL} 60 }; 61 62 /* 63 * Print bootp requests 64 */ 65 void 66 bootp_print(register const u_char *cp, u_int length) 67 { 68 register const struct bootp *bp; 69 static const u_char vm_cmu[4] = VM_CMU; 70 static const u_char vm_rfc1048[4] = VM_RFC1048; 71 72 bp = (const struct bootp *)cp; 73 TCHECK(bp->bp_op); 74 75 printf("BOOTP/DHCP, %s", 76 tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op)); 77 78 if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) { 79 TCHECK2(bp->bp_chaddr[0], 6); 80 printf(" from %s", etheraddr_string(bp->bp_chaddr)); 81 } 82 83 printf(", length %u", length); 84 85 if (!vflag) 86 return; 87 88 TCHECK(bp->bp_secs); 89 90 /* The usual hardware address type is 1 (10Mb Ethernet) */ 91 if (bp->bp_htype != 1) 92 printf(", htype %d", bp->bp_htype); 93 94 /* The usual length for 10Mb Ethernet address is 6 bytes */ 95 if (bp->bp_htype != 1 || bp->bp_hlen != 6) 96 printf(", hlen %d", bp->bp_hlen); 97 98 /* Only print interesting fields */ 99 if (bp->bp_hops) 100 printf(", hops %d", bp->bp_hops); 101 if (bp->bp_xid) 102 printf(", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid)); 103 if (bp->bp_secs) 104 printf(", secs %d", EXTRACT_16BITS(&bp->bp_secs)); 105 106 printf(", Flags [%s]", 107 bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags))); 108 if (vflag > 1) 109 printf(" (0x%04x)", EXTRACT_16BITS(&bp->bp_flags)); 110 111 /* Client's ip address */ 112 TCHECK(bp->bp_ciaddr); 113 if (bp->bp_ciaddr.s_addr) 114 printf("\n\t Client-IP %s", ipaddr_string(&bp->bp_ciaddr)); 115 116 /* 'your' ip address (bootp client) */ 117 TCHECK(bp->bp_yiaddr); 118 if (bp->bp_yiaddr.s_addr) 119 printf("\n\t Your-IP %s", ipaddr_string(&bp->bp_yiaddr)); 120 121 /* Server's ip address */ 122 TCHECK(bp->bp_siaddr); 123 if (bp->bp_siaddr.s_addr) 124 printf("\n\t Server-IP %s", ipaddr_string(&bp->bp_siaddr)); 125 126 /* Gateway's ip address */ 127 TCHECK(bp->bp_giaddr); 128 if (bp->bp_giaddr.s_addr) 129 printf("\n\t Gateway-IP %s", ipaddr_string(&bp->bp_giaddr)); 130 131 /* Client's Ethernet address */ 132 if (bp->bp_htype == 1 && bp->bp_hlen == 6) { 133 TCHECK2(bp->bp_chaddr[0], 6); 134 printf("\n\t Client-Ethernet-Address %s", etheraddr_string(bp->bp_chaddr)); 135 } 136 137 TCHECK2(bp->bp_sname[0], 1); /* check first char only */ 138 if (*bp->bp_sname) { 139 printf("\n\t sname \""); 140 if (fn_print(bp->bp_sname, snapend)) { 141 putchar('"'); 142 fputs(tstr + 1, stdout); 143 return; 144 } 145 putchar('"'); 146 } 147 TCHECK2(bp->bp_file[0], 1); /* check first char only */ 148 if (*bp->bp_file) { 149 printf("\n\t file \""); 150 if (fn_print(bp->bp_file, snapend)) { 151 putchar('"'); 152 fputs(tstr + 1, stdout); 153 return; 154 } 155 putchar('"'); 156 } 157 158 /* Decode the vendor buffer */ 159 TCHECK(bp->bp_vend[0]); 160 if (memcmp((const char *)bp->bp_vend, vm_rfc1048, 161 sizeof(u_int32_t)) == 0) 162 rfc1048_print(bp->bp_vend); 163 else if (memcmp((const char *)bp->bp_vend, vm_cmu, 164 sizeof(u_int32_t)) == 0) 165 cmu_print(bp->bp_vend); 166 else { 167 u_int32_t ul; 168 169 ul = EXTRACT_32BITS(&bp->bp_vend); 170 if (ul != 0) 171 printf("\n\t Vendor-#0x%x", ul); 172 } 173 174 return; 175 trunc: 176 fputs(tstr, stdout); 177 } 178 179 /* 180 * The first character specifies the format to print: 181 * i - ip address (32 bits) 182 * p - ip address pairs (32 bits + 32 bits) 183 * l - long (32 bits) 184 * L - unsigned long (32 bits) 185 * s - short (16 bits) 186 * b - period-seperated decimal bytes (variable length) 187 * x - colon-seperated hex bytes (variable length) 188 * a - ascii string (variable length) 189 * B - on/off (8 bits) 190 * $ - special (explicit code to handle) 191 */ 192 static struct tok tag2str[] = { 193 /* RFC1048 tags */ 194 { TAG_PAD, " PAD" }, 195 { TAG_SUBNET_MASK, "iSubnet-Mask" }, /* subnet mask (RFC950) */ 196 { TAG_TIME_OFFSET, "LTime-Zone" }, /* seconds from UTC */ 197 { TAG_GATEWAY, "iDefault-Gateway" }, /* default gateway */ 198 { TAG_TIME_SERVER, "iTime-Server" }, /* time servers (RFC868) */ 199 { TAG_NAME_SERVER, "iIEN-Name-Server" }, /* IEN name servers (IEN116) */ 200 { TAG_DOMAIN_SERVER, "iDomain-Name-Server" }, /* domain name (RFC1035) */ 201 { TAG_LOG_SERVER, "iLOG" }, /* MIT log servers */ 202 { TAG_COOKIE_SERVER, "iCS" }, /* cookie servers (RFC865) */ 203 { TAG_LPR_SERVER, "iLPR-Server" }, /* lpr server (RFC1179) */ 204 { TAG_IMPRESS_SERVER, "iIM" }, /* impress servers (Imagen) */ 205 { TAG_RLP_SERVER, "iRL" }, /* resource location (RFC887) */ 206 { TAG_HOSTNAME, "aHostname" }, /* ascii hostname */ 207 { TAG_BOOTSIZE, "sBS" }, /* 512 byte blocks */ 208 { TAG_END, " END" }, 209 /* RFC1497 tags */ 210 { TAG_DUMPPATH, "aDP" }, 211 { TAG_DOMAINNAME, "aDomain-Name" }, 212 { TAG_SWAP_SERVER, "iSS" }, 213 { TAG_ROOTPATH, "aRP" }, 214 { TAG_EXTPATH, "aEP" }, 215 /* RFC2132 tags */ 216 { TAG_IP_FORWARD, "BIPF" }, 217 { TAG_NL_SRCRT, "BSRT" }, 218 { TAG_PFILTERS, "pPF" }, 219 { TAG_REASS_SIZE, "sRSZ" }, 220 { TAG_DEF_TTL, "bTTL" }, 221 { TAG_MTU_TIMEOUT, "lMTU-Timeout" }, 222 { TAG_MTU_TABLE, "sMTU-Table" }, 223 { TAG_INT_MTU, "sMTU" }, 224 { TAG_LOCAL_SUBNETS, "BLSN" }, 225 { TAG_BROAD_ADDR, "iBR" }, 226 { TAG_DO_MASK_DISC, "BMD" }, 227 { TAG_SUPPLY_MASK, "BMS" }, 228 { TAG_DO_RDISC, "BRouter-Discovery" }, 229 { TAG_RTR_SOL_ADDR, "iRSA" }, 230 { TAG_STATIC_ROUTE, "pStatic-Route" }, 231 { TAG_USE_TRAILERS, "BUT" }, 232 { TAG_ARP_TIMEOUT, "lAT" }, 233 { TAG_ETH_ENCAP, "BIE" }, 234 { TAG_TCP_TTL, "bTT" }, 235 { TAG_TCP_KEEPALIVE, "lKI" }, 236 { TAG_KEEPALIVE_GO, "BKG" }, 237 { TAG_NIS_DOMAIN, "aYD" }, 238 { TAG_NIS_SERVERS, "iYS" }, 239 { TAG_NTP_SERVERS, "iNTP" }, 240 { TAG_VENDOR_OPTS, "bVendor-Option" }, 241 { TAG_NETBIOS_NS, "iNetbios-Name-Server" }, 242 { TAG_NETBIOS_DDS, "iWDD" }, 243 { TAG_NETBIOS_NODE, "$Netbios-Node" }, 244 { TAG_NETBIOS_SCOPE, "aNetbios-Scope" }, 245 { TAG_XWIN_FS, "iXFS" }, 246 { TAG_XWIN_DM, "iXDM" }, 247 { TAG_NIS_P_DOMAIN, "sN+D" }, 248 { TAG_NIS_P_SERVERS, "iN+S" }, 249 { TAG_MOBILE_HOME, "iMH" }, 250 { TAG_SMPT_SERVER, "iSMTP" }, 251 { TAG_POP3_SERVER, "iPOP3" }, 252 { TAG_NNTP_SERVER, "iNNTP" }, 253 { TAG_WWW_SERVER, "iWWW" }, 254 { TAG_FINGER_SERVER, "iFG" }, 255 { TAG_IRC_SERVER, "iIRC" }, 256 { TAG_STREETTALK_SRVR, "iSTS" }, 257 { TAG_STREETTALK_STDA, "iSTDA" }, 258 { TAG_REQUESTED_IP, "iRequested-IP" }, 259 { TAG_IP_LEASE, "lLease-Time" }, 260 { TAG_OPT_OVERLOAD, "$OO" }, 261 { TAG_TFTP_SERVER, "aTFTP" }, 262 { TAG_BOOTFILENAME, "aBF" }, 263 { TAG_DHCP_MESSAGE, " DHCP-Message" }, 264 { TAG_SERVER_ID, "iServer-ID" }, 265 { TAG_PARM_REQUEST, "bParameter-Request" }, 266 { TAG_MESSAGE, "aMSG" }, 267 { TAG_MAX_MSG_SIZE, "sMSZ" }, 268 { TAG_RENEWAL_TIME, "lRN" }, 269 { TAG_REBIND_TIME, "lRB" }, 270 { TAG_VENDOR_CLASS, "aVendor-Class" }, 271 { TAG_CLIENT_ID, "$Client-ID" }, 272 /* RFC 2485 */ 273 { TAG_OPEN_GROUP_UAP, "aUAP" }, 274 /* RFC 2563 */ 275 { TAG_DISABLE_AUTOCONF, "BNOAUTO" }, 276 /* RFC 2610 */ 277 { TAG_SLP_DA, "bSLP-DA" }, /*"b" is a little wrong */ 278 { TAG_SLP_SCOPE, "bSLP-SCOPE" }, /*"b" is a little wrong */ 279 /* RFC 2937 */ 280 { TAG_NS_SEARCH, "sNSSEARCH" }, /* XXX 's' */ 281 /* RFC 3011 */ 282 { TAG_IP4_SUBNET_SELECT, "iSUBNET" }, 283 /* RFC 3442 */ 284 { TAG_CLASSLESS_STATIC_RT, "$Classless-Static-Route" }, 285 { TAG_CLASSLESS_STA_RT_MS, "$Classless-Static-Route-Microsoft" }, 286 /* http://www.iana.org/assignments/bootp-dhcp-extensions/index.htm */ 287 { TAG_USER_CLASS, "aCLASS" }, 288 { TAG_SLP_NAMING_AUTH, "aSLP-NA" }, 289 { TAG_CLIENT_FQDN, "$FQDN" }, 290 { TAG_AGENT_CIRCUIT, "$Agent-Information" }, 291 { TAG_AGENT_REMOTE, "bARMT" }, 292 { TAG_AGENT_MASK, "bAMSK" }, 293 { TAG_TZ_STRING, "aTZSTR" }, 294 { TAG_FQDN_OPTION, "bFQDNS" }, /* XXX 'b' */ 295 { TAG_AUTH, "bAUTH" }, /* XXX 'b' */ 296 { TAG_VINES_SERVERS, "iVINES" }, 297 { TAG_SERVER_RANK, "sRANK" }, 298 { TAG_CLIENT_ARCH, "sARCH" }, 299 { TAG_CLIENT_NDI, "bNDI" }, /* XXX 'b' */ 300 { TAG_CLIENT_GUID, "bGUID" }, /* XXX 'b' */ 301 { TAG_LDAP_URL, "aLDAP" }, 302 { TAG_6OVER4, "i6o4" }, 303 { TAG_PRINTER_NAME, "aPRTR" }, 304 { TAG_MDHCP_SERVER, "bMDHCP" }, /* XXX 'b' */ 305 { TAG_IPX_COMPAT, "bIPX" }, /* XXX 'b' */ 306 { TAG_NETINFO_PARENT, "iNI" }, 307 { TAG_NETINFO_PARENT_TAG, "aNITAG" }, 308 { TAG_URL, "aURL" }, 309 { TAG_FAILOVER, "bFAIL" }, /* XXX 'b' */ 310 { 0, NULL } 311 }; 312 /* 2-byte extended tags */ 313 static struct tok xtag2str[] = { 314 { 0, NULL } 315 }; 316 317 /* DHCP "options overload" types */ 318 static struct tok oo2str[] = { 319 { 1, "file" }, 320 { 2, "sname" }, 321 { 3, "file+sname" }, 322 { 0, NULL } 323 }; 324 325 /* NETBIOS over TCP/IP node type options */ 326 static struct tok nbo2str[] = { 327 { 0x1, "b-node" }, 328 { 0x2, "p-node" }, 329 { 0x4, "m-node" }, 330 { 0x8, "h-node" }, 331 { 0, NULL } 332 }; 333 334 /* ARP Hardware types, for Client-ID option */ 335 static struct tok arp2str[] = { 336 { 0x1, "ether" }, 337 { 0x6, "ieee802" }, 338 { 0x7, "arcnet" }, 339 { 0xf, "frelay" }, 340 { 0x17, "strip" }, 341 { 0x18, "ieee1394" }, 342 { 0, NULL } 343 }; 344 345 static struct tok dhcp_msg_values[] = { 346 { DHCPDISCOVER, "Discover" }, 347 { DHCPOFFER, "Offer" }, 348 { DHCPREQUEST, "Request" }, 349 { DHCPDECLINE, "Decline" }, 350 { DHCPACK, "ACK" }, 351 { DHCPNAK, "NACK" }, 352 { DHCPRELEASE, "Release" }, 353 { DHCPINFORM, "Inform" }, 354 { 0, NULL } 355 }; 356 357 #define AGENT_SUBOPTION_CIRCUIT_ID 1 358 static struct tok agent_suboption_values[] = { 359 { AGENT_SUBOPTION_CIRCUIT_ID, "Circuit-ID" }, 360 { 0, NULL } 361 }; 362 363 364 static void 365 rfc1048_print(register const u_char *bp) 366 { 367 register u_int16_t tag; 368 register u_int len; 369 register const char *cp; 370 register char c; 371 int first, idx; 372 u_int32_t ul; 373 u_int16_t us; 374 u_int8_t uc, subopt, suboptlen; 375 376 printf("\n\t Vendor-rfc1048 Extensions"); 377 378 /* Step over magic cookie */ 379 printf("\n\t Magic Cookie 0x%08x", EXTRACT_32BITS(bp)); 380 bp += sizeof(int32_t); 381 382 /* Loop while we there is a tag left in the buffer */ 383 while (TTEST2(*bp, 1)) { 384 tag = *bp++; 385 if (tag == TAG_PAD && vflag < 3) 386 continue; 387 if (tag == TAG_END && vflag < 3) 388 return; 389 if (tag == TAG_EXTENDED_OPTION) { 390 TCHECK2(*(bp + 1), 2); 391 tag = EXTRACT_16BITS(bp + 1); 392 /* XXX we don't know yet if the IANA will 393 * preclude overlap of 1-byte and 2-byte spaces. 394 * If not, we need to offset tag after this step. 395 */ 396 cp = tok2str(xtag2str, "?xT%u", tag); 397 } else 398 cp = tok2str(tag2str, "?T%u", tag); 399 c = *cp++; 400 401 if (tag == TAG_PAD || tag == TAG_END) 402 len = 0; 403 else { 404 /* Get the length; check for truncation */ 405 TCHECK2(*bp, 1); 406 len = *bp++; 407 } 408 409 printf("\n\t %s Option %u, length %u%s", cp, tag, len, 410 len > 0 ? ": " : ""); 411 412 if (tag == TAG_PAD && vflag > 2) { 413 u_int ntag = 1; 414 while (TTEST2(*bp, 1) && *bp == TAG_PAD) { 415 bp++; 416 ntag++; 417 } 418 if (ntag > 1) 419 printf(", occurs %u", ntag); 420 } 421 422 if (!TTEST2(*bp, len)) { 423 printf("[|rfc1048 %u]", len); 424 return; 425 } 426 427 if (tag == TAG_DHCP_MESSAGE && len == 1) { 428 uc = *bp++; 429 printf("%s", tok2str(dhcp_msg_values, "Unknown (%u)", uc)); 430 continue; 431 } 432 433 if (tag == TAG_PARM_REQUEST) { 434 idx = 0; 435 while (len-- > 0) { 436 uc = *bp++; 437 cp = tok2str(tag2str, "?Option %u", uc); 438 if (idx % 4 == 0) 439 printf("\n\t "); 440 else 441 printf(", "); 442 printf("%s", cp + 1); 443 idx++; 444 } 445 continue; 446 } 447 448 if (tag == TAG_EXTENDED_REQUEST) { 449 first = 1; 450 while (len > 1) { 451 len -= 2; 452 us = EXTRACT_16BITS(bp); 453 bp += 2; 454 cp = tok2str(xtag2str, "?xT%u", us); 455 if (!first) 456 putchar('+'); 457 printf("%s", cp + 1); 458 first = 0; 459 } 460 continue; 461 } 462 463 /* Print data */ 464 if (c == '?') { 465 /* Base default formats for unknown tags on data size */ 466 if (len & 1) 467 c = 'b'; 468 else if (len & 2) 469 c = 's'; 470 else 471 c = 'l'; 472 } 473 first = 1; 474 switch (c) { 475 476 case 'a': 477 /* ascii strings */ 478 putchar('"'); 479 if (fn_printn(bp, len, snapend)) { 480 putchar('"'); 481 goto trunc; 482 } 483 putchar('"'); 484 bp += len; 485 len = 0; 486 break; 487 488 case 'i': 489 case 'l': 490 case 'L': 491 /* ip addresses/32-bit words */ 492 while (len >= sizeof(ul)) { 493 if (!first) 494 putchar(','); 495 ul = EXTRACT_32BITS(bp); 496 if (c == 'i') { 497 ul = htonl(ul); 498 printf("%s", ipaddr_string(&ul)); 499 } else if (c == 'L') 500 printf("%d", ul); 501 else 502 printf("%u", ul); 503 bp += sizeof(ul); 504 len -= sizeof(ul); 505 first = 0; 506 } 507 break; 508 509 case 'p': 510 /* IP address pairs */ 511 while (len >= 2*sizeof(ul)) { 512 if (!first) 513 putchar(','); 514 memcpy((char *)&ul, (const char *)bp, sizeof(ul)); 515 printf("(%s:", ipaddr_string(&ul)); 516 bp += sizeof(ul); 517 memcpy((char *)&ul, (const char *)bp, sizeof(ul)); 518 printf("%s)", ipaddr_string(&ul)); 519 bp += sizeof(ul); 520 len -= 2*sizeof(ul); 521 first = 0; 522 } 523 break; 524 525 case 's': 526 /* shorts */ 527 while (len >= sizeof(us)) { 528 if (!first) 529 putchar(','); 530 us = EXTRACT_16BITS(bp); 531 printf("%u", us); 532 bp += sizeof(us); 533 len -= sizeof(us); 534 first = 0; 535 } 536 break; 537 538 case 'B': 539 /* boolean */ 540 while (len > 0) { 541 if (!first) 542 putchar(','); 543 switch (*bp) { 544 case 0: 545 putchar('N'); 546 break; 547 case 1: 548 putchar('Y'); 549 break; 550 default: 551 printf("%u?", *bp); 552 break; 553 } 554 ++bp; 555 --len; 556 first = 0; 557 } 558 break; 559 560 case 'b': 561 case 'x': 562 default: 563 /* Bytes */ 564 while (len > 0) { 565 if (!first) 566 putchar(c == 'x' ? ':' : '.'); 567 if (c == 'x') 568 printf("%02x", *bp); 569 else 570 printf("%u", *bp); 571 ++bp; 572 --len; 573 first = 0; 574 } 575 break; 576 577 case '$': 578 /* Guys we can't handle with one of the usual cases */ 579 switch (tag) { 580 581 case TAG_NETBIOS_NODE: 582 /* this option should be at least 1 byte long */ 583 if (len < 1) { 584 printf("ERROR: option %u len %u < 1 bytes", 585 TAG_NETBIOS_NODE, len); 586 bp += len; 587 len = 0; 588 break; 589 } 590 tag = *bp++; 591 --len; 592 fputs(tok2str(nbo2str, NULL, tag), stdout); 593 break; 594 595 case TAG_OPT_OVERLOAD: 596 /* this option should be at least 1 byte long */ 597 if (len < 1) { 598 printf("ERROR: option %u len %u < 1 bytes", 599 TAG_OPT_OVERLOAD, len); 600 bp += len; 601 len = 0; 602 break; 603 } 604 tag = *bp++; 605 --len; 606 fputs(tok2str(oo2str, NULL, tag), stdout); 607 break; 608 609 case TAG_CLIENT_FQDN: 610 /* this option should be at least 3 bytes long */ 611 if (len < 3) { 612 printf("ERROR: option %u len %u < 3 bytes", 613 TAG_CLIENT_FQDN, len); 614 bp += len; 615 len = 0; 616 break; 617 } 618 if (*bp) 619 printf("[%s] ", client_fqdn_flags(*bp)); 620 bp++; 621 if (*bp || *(bp+1)) 622 printf("%u/%u ", *bp, *(bp+1)); 623 bp += 2; 624 putchar('"'); 625 if (fn_printn(bp, len - 3, snapend)) { 626 putchar('"'); 627 goto trunc; 628 } 629 putchar('"'); 630 bp += len - 3; 631 len = 0; 632 break; 633 634 case TAG_CLIENT_ID: 635 { int type; 636 637 /* this option should be at least 1 byte long */ 638 if (len < 1) { 639 printf("ERROR: option %u len %u < 1 bytes", 640 TAG_CLIENT_ID, len); 641 bp += len; 642 len = 0; 643 break; 644 } 645 type = *bp++; 646 len--; 647 if (type == 0) { 648 putchar('"'); 649 if (fn_printn(bp, len, snapend)) { 650 putchar('"'); 651 goto trunc; 652 } 653 putchar('"'); 654 bp += len; 655 len = 0; 656 break; 657 } else { 658 printf("%s ", tok2str(arp2str, "hardware-type %u,", type)); 659 while (len > 0) { 660 if (!first) 661 putchar(':'); 662 printf("%02x", *bp); 663 ++bp; 664 --len; 665 first = 0; 666 } 667 } 668 break; 669 } 670 671 case TAG_AGENT_CIRCUIT: 672 while (len >= 2) { 673 subopt = *bp++; 674 suboptlen = *bp++; 675 len -= 2; 676 if (suboptlen > len) { 677 printf("\n\t %s SubOption %u, length %u: length goes past end of option", 678 tok2str(agent_suboption_values, "Unknown", subopt), 679 subopt, 680 suboptlen); 681 bp += len; 682 len = 0; 683 break; 684 } 685 printf("\n\t %s SubOption %u, length %u: ", 686 tok2str(agent_suboption_values, "Unknown", subopt), 687 subopt, 688 suboptlen); 689 switch (subopt) { 690 691 case AGENT_SUBOPTION_CIRCUIT_ID: 692 fn_printn(bp, suboptlen, NULL); 693 break; 694 695 default: 696 print_unknown_data(bp, "\n\t\t", suboptlen); 697 } 698 699 len -= suboptlen; 700 bp += suboptlen; 701 } 702 break; 703 704 case TAG_CLASSLESS_STATIC_RT: 705 case TAG_CLASSLESS_STA_RT_MS: 706 { 707 u_int mask_width, significant_octets, i; 708 709 /* this option should be at least 5 bytes long */ 710 if (len < 5) { 711 printf("ERROR: option %u len %u < 5 bytes", 712 TAG_CLASSLESS_STATIC_RT, len); 713 bp += len; 714 len = 0; 715 break; 716 } 717 while (len > 0) { 718 if (!first) 719 putchar(','); 720 mask_width = *bp++; 721 len--; 722 /* mask_width <= 32 */ 723 if (mask_width > 32) { 724 printf("[ERROR: Mask width (%d) > 32]", mask_width); 725 bp += len; 726 len = 0; 727 break; 728 } 729 significant_octets = (mask_width + 7) / 8; 730 /* significant octets + router(4) */ 731 if (len < significant_octets + 4) { 732 printf("[ERROR: Remaining length (%u) < %u bytes]", len, significant_octets + 4); 733 bp += len; 734 len = 0; 735 break; 736 } 737 putchar('('); 738 if (mask_width == 0) 739 printf("default"); 740 else { 741 for (i = 0; i < significant_octets ; i++) { 742 if (i > 0) 743 putchar('.'); 744 printf("%d", *bp++); 745 } 746 for (i = significant_octets ; i < 4 ; i++) 747 printf(".0"); 748 printf("/%d", mask_width); 749 } 750 memcpy((char *)&ul, (const char *)bp, sizeof(ul)); 751 printf(":%s)", ipaddr_string(&ul)); 752 bp += sizeof(ul); 753 len -= (significant_octets + 4); 754 first = 0; 755 } 756 } 757 break; 758 759 default: 760 printf("[unknown special tag %u, size %u]", 761 tag, len); 762 bp += len; 763 len = 0; 764 break; 765 } 766 break; 767 } 768 /* Data left over? */ 769 if (len) { 770 printf("\n\t trailing data length %u", len); 771 bp += len; 772 } 773 } 774 return; 775 trunc: 776 printf("|[rfc1048]"); 777 } 778 779 static void 780 cmu_print(register const u_char *bp) 781 { 782 register const struct cmu_vend *cmu; 783 784 #define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \ 785 if (cmu->m.s_addr != 0) \ 786 printf(" %s:%s", s, ipaddr_string(&cmu->m.s_addr)); } 787 788 printf(" vend-cmu"); 789 cmu = (const struct cmu_vend *)bp; 790 791 /* Only print if there are unknown bits */ 792 TCHECK(cmu->v_flags); 793 if ((cmu->v_flags & ~(VF_SMASK)) != 0) 794 printf(" F:0x%x", cmu->v_flags); 795 PRINTCMUADDR(v_dgate, "DG"); 796 PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*"); 797 PRINTCMUADDR(v_dns1, "NS1"); 798 PRINTCMUADDR(v_dns2, "NS2"); 799 PRINTCMUADDR(v_ins1, "IEN1"); 800 PRINTCMUADDR(v_ins2, "IEN2"); 801 PRINTCMUADDR(v_ts1, "TS1"); 802 PRINTCMUADDR(v_ts2, "TS2"); 803 return; 804 805 trunc: 806 fputs(tstr, stdout); 807 #undef PRINTCMUADDR 808 } 809 810 static char * 811 client_fqdn_flags(u_int flags) 812 { 813 static char buf[8+1]; 814 int i = 0; 815 816 if (flags & CLIENT_FQDN_FLAGS_S) 817 buf[i++] = 'S'; 818 if (flags & CLIENT_FQDN_FLAGS_O) 819 buf[i++] = 'O'; 820 if (flags & CLIENT_FQDN_FLAGS_E) 821 buf[i++] = 'E'; 822 if (flags & CLIENT_FQDN_FLAGS_N) 823 buf[i++] = 'N'; 824 buf[i] = '\0'; 825 826 return buf; 827 } 828