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