1 /* 2 * Copyright (c) 1988-1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 1998-2004 Michael Richardson <mcr@tcpdump.org> 6 * The TCPDUMP project 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that: (1) source code distributions 10 * retain the above copyright notice and this paragraph in its entirety, (2) 11 * distributions including binary code include the above copyright notice and 12 * this paragraph in its entirety in the documentation or other materials 13 * provided with the distribution, and (3) all advertising materials mentioning 14 * features or use of this software display the following acknowledgement: 15 * ``This product includes software developed by the University of California, 16 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 17 * the University nor the names of its contributors may be used to endorse 18 * or promote products derived from this software without specific prior 19 * written permission. 20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 21 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 23 * 24 * @(#) $Header: /tcpdump/master/tcpdump/netdissect.h,v 1.27 2008-08-16 11:36:20 hannes Exp $ (LBL) 25 */ 26 27 #ifndef netdissect_h 28 #define netdissect_h 29 30 #ifdef HAVE_OS_PROTO_H 31 #include "os-proto.h" 32 #endif 33 #include <sys/types.h> 34 35 #ifndef HAVE___ATTRIBUTE__ 36 #define __attribute__(x) 37 #endif 38 39 /* snprintf et al */ 40 41 #include <stdarg.h> 42 43 #if !defined(HAVE_SNPRINTF) 44 int snprintf (char *str, size_t sz, const char *format, ...) 45 __attribute__ ((format (printf, 3, 4))); 46 #endif 47 48 #if !defined(HAVE_VSNPRINTF) 49 int vsnprintf (char *str, size_t sz, const char *format, va_list ap) 50 __attribute__((format (printf, 3, 0))); 51 #endif 52 53 #ifndef HAVE_STRLCAT 54 extern size_t strlcat (char *, const char *, size_t); 55 #endif 56 #ifndef HAVE_STRLCPY 57 extern size_t strlcpy (char *, const char *, size_t); 58 #endif 59 60 #ifndef HAVE_STRDUP 61 extern char *strdup (const char *str); 62 #endif 63 64 #ifndef HAVE_STRSEP 65 extern char *strsep(char **, const char *); 66 #endif 67 68 struct tok { 69 int v; /* value */ 70 const char *s; /* string */ 71 }; 72 73 #define TOKBUFSIZE 128 74 extern const char *tok2strbuf(const struct tok *, const char *, int, 75 char *buf, size_t bufsize); 76 77 /* tok2str is deprecated */ 78 extern const char *tok2str(const struct tok *, const char *, int); 79 extern char *bittok2str(const struct tok *, const char *, int); 80 extern char *bittok2str_nosep(const struct tok *, const char *, int); 81 82 83 typedef struct netdissect_options netdissect_options; 84 85 struct netdissect_options { 86 int ndo_aflag; /* translate network and broadcast addresses */ 87 int ndo_bflag; /* print 4 byte ASes in ASDOT notation */ 88 int ndo_eflag; /* print ethernet header */ 89 int ndo_fflag; /* don't translate "foreign" IP address */ 90 int ndo_Kflag; /* don't check TCP checksums */ 91 int ndo_nflag; /* leave addresses as numbers */ 92 int ndo_Nflag; /* remove domains from printed host names */ 93 int ndo_qflag; /* quick (shorter) output */ 94 int ndo_Rflag; /* print sequence # field in AH/ESP*/ 95 int ndo_sflag; /* use the libsmi to translate OIDs */ 96 int ndo_Sflag; /* print raw TCP sequence numbers */ 97 int ndo_tflag; /* print packet arrival time */ 98 int ndo_Uflag; /* "unbuffered" output of dump files */ 99 int ndo_uflag; /* Print undecoded NFS handles */ 100 int ndo_vflag; /* verbose */ 101 int ndo_xflag; /* print packet in hex */ 102 int ndo_Xflag; /* print packet in hex/ascii */ 103 int ndo_Aflag; /* print packet only in ascii observing TAB, 104 * LF, CR and SPACE as graphical chars 105 */ 106 int ndo_Bflag; /* buffer size */ 107 int ndo_Iflag; /* rfmon (monitor) mode */ 108 int ndo_Oflag; /* run filter code optimizer */ 109 int ndo_dlt; /* if != -1, ask libpcap for the DLT it names*/ 110 int ndo_jflag; /* packet time stamp source */ 111 int ndo_pflag; /* don't go promiscuous */ 112 113 int ndo_Cflag; /* rotate dump files after this many bytes */ 114 int ndo_Cflag_count; /* Keep track of which file number we're writing */ 115 int ndo_Gflag; /* rotate dump files after this many seconds */ 116 int ndo_Gflag_count; /* number of files created with Gflag rotation */ 117 time_t ndo_Gflag_time; /* The last time_t the dump file was rotated. */ 118 int ndo_Wflag; /* recycle output files after this number of files */ 119 int ndo_WflagChars; 120 int ndo_Hflag; /* dissect 802.11s draft mesh standard */ 121 int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */ 122 const char *ndo_dltname; 123 124 char *ndo_espsecret; 125 struct sa_list *ndo_sa_list_head; /* used by print-esp.c */ 126 struct sa_list *ndo_sa_default; 127 128 char *ndo_sigsecret; /* Signature verification secret key */ 129 130 struct esp_algorithm *ndo_espsecret_xform; /* cache of decoded */ 131 char *ndo_espsecret_key; 132 133 int ndo_packettype; /* as specified by -T */ 134 135 char *ndo_program_name; /*used to generate self-identifying messages */ 136 137 int32_t ndo_thiszone; /* seconds offset from gmt to local time */ 138 139 int ndo_snaplen; 140 141 /*global pointers to beginning and end of current packet (during printing) */ 142 const u_char *ndo_packetp; 143 const u_char *ndo_snapend; 144 145 /* bookkeeping for ^T output */ 146 int ndo_infodelay; 147 148 /* pointer to void function to output stuff */ 149 void (*ndo_default_print)(netdissect_options *, 150 register const u_char *bp, register u_int length); 151 void (*ndo_info)(netdissect_options *, int verbose); 152 153 int (*ndo_printf)(netdissect_options *, 154 const char *fmt, ...) 155 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 156 __attribute__ ((format (printf, 2, 3))) 157 #endif 158 ; 159 void (*ndo_error)(netdissect_options *, 160 const char *fmt, ...) 161 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 162 __attribute__ ((noreturn, format (printf, 2, 3))) 163 #endif 164 ; 165 void (*ndo_warning)(netdissect_options *, 166 const char *fmt, ...) 167 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 168 __attribute__ ((format (printf, 2, 3))) 169 #endif 170 ; 171 }; 172 173 #define PT_VAT 1 /* Visual Audio Tool */ 174 #define PT_WB 2 /* distributed White Board */ 175 #define PT_RPC 3 /* Remote Procedure Call */ 176 #define PT_RTP 4 /* Real-Time Applications protocol */ 177 #define PT_RTCP 5 /* Real-Time Applications control protocol */ 178 #define PT_SNMP 6 /* Simple Network Management Protocol */ 179 #define PT_CNFP 7 /* Cisco NetFlow protocol */ 180 181 #ifndef min 182 #define min(a,b) ((a)>(b)?(b):(a)) 183 #endif 184 #ifndef max 185 #define max(a,b) ((b)>(a)?(b):(a)) 186 #endif 187 188 /* 189 * Maximum snapshot length. This should be enough to capture the full 190 * packet on most network interfaces. 191 * 192 * XXX - could it be larger? If so, should it? Some applications might 193 * use the snapshot length in a savefile header to control the size of 194 * the buffer they allocate, so a size of, say, 2^31-1 might not work 195 * well. 196 */ 197 #define MAXIMUM_SNAPLEN 65535 198 199 /* 200 * The default snapshot length is the maximum. 201 */ 202 #define DEFAULT_SNAPLEN MAXIMUM_SNAPLEN 203 204 #define ESRC(ep) ((ep)->ether_shost) 205 #define EDST(ep) ((ep)->ether_dhost) 206 207 #ifndef NTOHL 208 #define NTOHL(x) (x) = ntohl(x) 209 #define NTOHS(x) (x) = ntohs(x) 210 #define HTONL(x) (x) = htonl(x) 211 #define HTONS(x) (x) = htons(x) 212 #endif 213 214 /* 215 * True if "l" bytes of "var" were captured. 216 * 217 * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure 218 * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows. 219 * 220 * The check is for <= rather than < because "l" might be 0. 221 */ 222 #define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \ 223 (const u_char *)&(var) <= ndo->ndo_snapend - (l)) 224 225 /* True if "var" was captured */ 226 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var)) 227 228 /* Bail if "l" bytes of "var" were not captured */ 229 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc 230 231 /* Bail if "var" was not captured */ 232 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var)) 233 234 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF 235 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length) 236 237 #if 0 238 extern void ts_print(netdissect_options *ipdo, 239 const struct timeval *); 240 extern void relts_print(int); 241 #endif 242 243 extern int fn_print(const u_char *, const u_char *); 244 extern int fn_printn(const u_char *, u_int, const u_char *); 245 extern const char *tok2str(const struct tok *, const char *, int); 246 247 extern void wrapup(int); 248 249 #if 0 250 extern char *read_infile(netdissect_options *, char *); 251 extern char *copy_argv(netdissect_options *, char **); 252 #endif 253 254 extern void safeputchar(int); 255 extern void safeputs(const char *, int); 256 257 #define PLURAL_SUFFIX(n) \ 258 (((n) != 1) ? "s" : "") 259 260 #if 0 261 extern const char *isonsap_string(netdissect_options *, const u_char *); 262 extern const char *protoid_string(netdissect_options *, const u_char *); 263 extern const char *dnname_string(netdissect_options *, u_short); 264 extern const char *dnnum_string(netdissect_options *, u_short); 265 #endif 266 267 /* The printer routines. */ 268 269 #include <pcap.h> 270 271 typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo, 272 const struct pcap_pkthdr *, const u_char *); 273 typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *); 274 275 extern if_ndo_printer lookup_ndo_printer(int); 276 extern if_printer lookup_printer(int); 277 278 extern void eap_print(netdissect_options *,const u_char *, u_int); 279 extern int esp_print(netdissect_options *, 280 register const u_char *bp, int len, register const u_char *bp2, 281 int *nhdr, int *padlen); 282 extern void arp_print(netdissect_options *,const u_char *, u_int, u_int); 283 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int); 284 extern void icmp6_print(netdissect_options *ndo, const u_char *, 285 u_int, const u_char *, int); 286 extern void isakmp_print(netdissect_options *,const u_char *, 287 u_int, const u_char *); 288 extern void isakmp_rfc3948_print(netdissect_options *,const u_char *, 289 u_int, const u_char *); 290 extern void ip_print(netdissect_options *,const u_char *, u_int); 291 extern void ip_print_inner(netdissect_options *ndo, 292 const u_char *bp, u_int length, u_int nh, 293 const u_char *bp2); 294 extern void rrcp_print(netdissect_options *,const u_char *, u_int); 295 296 extern void ether_print(netdissect_options *, 297 const u_char *, u_int, u_int, 298 void (*)(netdissect_options *, const u_char *), 299 const u_char *); 300 301 extern u_int ether_if_print(netdissect_options *, 302 const struct pcap_pkthdr *,const u_char *); 303 extern u_int netanalyzer_if_print(netdissect_options *, 304 const struct pcap_pkthdr *,const u_char *); 305 extern u_int netanalyzer_transparent_if_print(netdissect_options *, 306 const struct pcap_pkthdr *, 307 const u_char *); 308 309 extern int ethertype_print(netdissect_options *,u_short, const u_char *, 310 u_int, u_int); 311 312 /* stuff that has not yet been rototiled */ 313 #if 0 314 extern void ascii_print(netdissect_options *,u_int); 315 extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *, 316 u_int, u_int); 317 extern void hex_and_ascii_print(netdissect_options *,const char *, u_int); 318 extern void hex_print_with_offset(netdissect_options *,const char *, 319 u_int, u_int); 320 extern void hex_print(netdissect_options *,const char *, u_int); 321 extern void telnet_print(netdissect_options *,const u_char *, u_int); 322 extern int llc_print(netdissect_options *, 323 const u_char *, u_int, u_int, const u_char *, 324 const u_char *, u_short *); 325 extern void aarp_print(netdissect_options *,const u_char *, u_int); 326 extern void atalk_print(netdissect_options *,const u_char *, u_int); 327 extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 328 extern void bootp_print(netdissect_options *,const u_char *, 329 u_int, u_short, u_short); 330 extern void bgp_print(netdissect_options *,const u_char *, int); 331 extern void bxxp_print(netdissect_options *,const u_char *, u_int); 332 extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h, 333 register const u_char *p); 334 extern void chdlc_print(netdissect_options *ndo, 335 register const u_char *p, u_int length, u_int caplen); 336 extern void cisco_autorp_print(netdissect_options *, 337 const u_char *, u_int); 338 extern void cnfp_print(netdissect_options *,const u_char *cp, 339 u_int len, const u_char *bp); 340 extern void decnet_print(netdissect_options *,const u_char *, 341 u_int, u_int); 342 extern void default_print(netdissect_options *,const u_char *, u_int); 343 extern void dvmrp_print(netdissect_options *,const u_char *, u_int); 344 extern void egp_print(netdissect_options *,const u_char *, u_int, 345 const u_char *); 346 347 extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *); 348 extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 349 extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 350 351 extern void gre_print(netdissect_options *,const u_char *, u_int); 352 extern void icmp_print(netdissect_options *,const u_char *, u_int, 353 const u_char *); 354 extern void hsrp_print(netdissect_options *ndo, 355 register const u_char *bp, register u_int len); 356 extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 357 extern void igmp_print(netdissect_options *, 358 register const u_char *, u_int); 359 extern void igrp_print(netdissect_options *,const u_char *, u_int, 360 const u_char *); 361 extern int nextproto4_cksum(const struct ip *, const u_int8_t *, u_int, u_int); 362 extern void ipN_print(netdissect_options *,const u_char *, u_int); 363 extern void ipx_print(netdissect_options *,const u_char *, u_int); 364 extern void isoclns_print(netdissect_options *,const u_char *, 365 u_int, u_int, const u_char *, const u_char *); 366 extern void krb_print(netdissect_options *,const u_char *, u_int); 367 extern void llap_print(netdissect_options *,const u_char *, u_int); 368 extern const char *linkaddr_string(netdissect_options *ndo, 369 const u_char *ep, const unsigned int len); 370 extern void ltalk_if_print(netdissect_options *ndo, 371 u_char *user, const struct pcap_pkthdr *h, 372 const u_char *p); 373 extern void mpls_print(netdissect_options *ndo, 374 const u_char *bp, u_int length); 375 extern void msdp_print(netdissect_options *ndo, 376 const unsigned char *sp, u_int length); 377 extern void nfsreply_print(netdissect_options *,const u_char *, 378 u_int, const u_char *); 379 extern void nfsreq_print(netdissect_options *,const u_char *, 380 u_int, const u_char *); 381 extern void ns_print(netdissect_options *,const u_char *, u_int); 382 extern void ntp_print(netdissect_options *,const u_char *, u_int); 383 extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 384 extern void ospf_print(netdissect_options *,const u_char *, 385 u_int, const u_char *); 386 extern void pimv1_print(netdissect_options *,const u_char *, u_int); 387 extern void mobile_print(netdissect_options *,const u_char *, u_int); 388 extern void pim_print(netdissect_options *,const u_char *, u_int, u_int); 389 extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 390 extern void pppoe_print(netdissect_options *,const u_char *, u_int); 391 extern void ppp_print(netdissect_options *, 392 register const u_char *, u_int); 393 394 extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 395 extern void ppp_hdlc_if_print(u_char *, 396 const struct pcap_pkthdr *, const u_char *); 397 extern void ppp_bsdos_if_print(u_char *, 398 const struct pcap_pkthdr *, const u_char *); 399 400 extern int vjc_print(netdissect_options *,register const char *, 401 register u_int, u_short); 402 403 extern void raw_if_print(u_char *, 404 const struct pcap_pkthdr *, const u_char *); 405 406 extern void rip_print(netdissect_options *,const u_char *, u_int); 407 extern void rpki_rtr_print(netdissect_options *,const u_char *, u_int); 408 409 extern void sctp_print(netdissect_options *ndo, 410 const u_char *bp, const u_char *bp2, 411 u_int sctpPacketLength); 412 413 extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 414 415 extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 416 extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 417 extern void sl_bsdos_if_print(u_char *, 418 const struct pcap_pkthdr *, const u_char *); 419 extern void sll_if_print(u_char *, 420 const struct pcap_pkthdr *, const u_char *); 421 422 extern void snmp_print(netdissect_options *,const u_char *, u_int); 423 extern void sunrpcrequest_print(netdissect_options *,const u_char *, 424 u_int, const u_char *); 425 extern void tcp_print(netdissect_options *,const u_char *, u_int, 426 const u_char *, int); 427 extern void tftp_print(netdissect_options *,const u_char *, u_int); 428 extern void timed_print(netdissect_options *,const u_char *, u_int); 429 extern void udp_print(netdissect_options *,const u_char *, u_int, 430 const u_char *, int); 431 extern void wb_print(netdissect_options *,const void *, u_int); 432 extern int ah_print(netdissect_options *,register const u_char *, 433 register const u_char *); 434 extern void esp_print_decodesecret(netdissect_options *ndo); 435 extern int ipcomp_print(netdissect_options *,register const u_char *, 436 register const u_char *, int *); 437 extern void rx_print(netdissect_options *,register const u_char *, 438 int, int, int, u_char *); 439 extern void netbeui_print(netdissect_options *,u_short, 440 const u_char *, int); 441 extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int); 442 extern void nbt_tcp_print(netdissect_options *,const u_char *, int); 443 extern void nbt_udp137_print(netdissect_options *, 444 const u_char *data, int); 445 extern void nbt_udp138_print(netdissect_options *, 446 const u_char *data, int); 447 extern char *smb_errstr(netdissect_options *,int, int); 448 extern const char *nt_errstr(netdissect_options *, u_int32_t); 449 extern void print_data(netdissect_options *,const unsigned char *, int); 450 extern void l2tp_print(netdissect_options *,const u_char *, u_int); 451 extern void lcp_print(netdissect_options *,const u_char *, u_int); 452 extern void vrrp_print(netdissect_options *,const u_char *bp, 453 u_int len, int ttl); 454 extern void carp_print(netdissect_options *,const u_char *bp, 455 u_int len, int ttl); 456 extern void cdp_print(netdissect_options *,const u_char *, 457 u_int, u_int, const u_char *, const u_char *); 458 extern void stp_print(netdissect_options *,const u_char *p, u_int length); 459 extern void radius_print(netdissect_options *,const u_char *, u_int); 460 extern void lwres_print(netdissect_options *,const u_char *, u_int); 461 extern void pptp_print(netdissect_options *,const u_char *, u_int); 462 #endif 463 464 extern u_int ipnet_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 465 extern u_int ppi_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 466 467 extern u_int ieee802_15_4_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 468 469 #ifdef INET6 470 extern void ip6_print(netdissect_options *,const u_char *, u_int); 471 #if 0 472 extern void ip6_opt_print(netdissect_options *,const u_char *, int); 473 extern int nextproto6_cksum(const struct ip6_hdr *, const u_int8_t *, u_int, u_int); 474 extern int hbhopt_print(netdissect_options *,const u_char *); 475 extern int dstopt_print(netdissect_options *,const u_char *); 476 extern int frag6_print(netdissect_options *,const u_char *, 477 const u_char *); 478 extern void icmp6_print(netdissect_options *,const u_char *, 479 const u_char *); 480 extern void ripng_print(netdissect_options *,const u_char *, int); 481 extern int rt6_print(netdissect_options *,const u_char *, const u_char *); 482 extern void ospf6_print(netdissect_options *,const u_char *, u_int); 483 extern void dhcp6_print(netdissect_options *,const u_char *, 484 u_int, u_int16_t, u_int16_t); 485 486 extern void zephyr_print(netdissect_options * ndo, 487 const u_char *cp, int length); 488 #endif /* 0 */ 489 490 #endif /*INET6*/ 491 492 #if 0 493 struct cksum_vec { 494 const u_int8_t *ptr; 495 int len; 496 }; 497 extern u_int16_t in_cksum(const struct cksum_vec *, int); 498 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t); 499 #endif 500 501 extern void esp_print_decodesecret(netdissect_options *ndo); 502 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *ndo, 503 int initiator, 504 u_char spii[8], u_char spir[8], 505 u_char *buf, u_char *end); 506 507 508 #endif /* netdissect_h */ 509