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 1.16.2.4 2006/02/08 01:40:09 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 81 82 typedef struct netdissect_options netdissect_options; 83 84 struct netdissect_options { 85 int ndo_aflag; /* translate network and broadcast addresses */ 86 int ndo_eflag; /* print ethernet header */ 87 int ndo_fflag; /* don't translate "foreign" IP address */ 88 int ndo_nflag; /* leave addresses as numbers */ 89 int ndo_Nflag; /* remove domains from printed host names */ 90 int ndo_qflag; /* quick (shorter) output */ 91 int ndo_Rflag; /* print sequence # field in AH/ESP*/ 92 int ndo_sflag; /* use the libsmi to translate OIDs */ 93 int ndo_Sflag; /* print raw TCP sequence numbers */ 94 int ndo_tflag; /* print packet arrival time */ 95 int ndo_Uflag; /* "unbuffered" output of dump files */ 96 int ndo_uflag; /* Print undecoded NFS handles */ 97 int ndo_vflag; /* verbose */ 98 int ndo_xflag; /* print packet in hex */ 99 int ndo_Xflag; /* print packet in hex/ascii */ 100 int ndo_Aflag; /* print packet only in ascii observing TAB, 101 * LF, CR and SPACE as graphical chars 102 */ 103 int ndo_Oflag; /* run filter code optimizer */ 104 int ndo_dlt; /* if != -1, ask libpcap for the DLT it names*/ 105 int ndo_pflag; /* don't go promiscuous */ 106 107 int ndo_Cflag; /* rotate dump files after this many bytes */ 108 int ndo_Cflag_count; /* Keep track of which file number we're writing */ 109 int ndo_Wflag; /* recycle output files after this number of files */ 110 int ndo_WflagChars; 111 int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */ 112 const char *ndo_dltname; 113 114 char *ndo_espsecret; 115 struct sa_list *ndo_sa_list_head; /* used by print-esp.c */ 116 struct sa_list *ndo_sa_default; 117 118 char *ndo_tcpmd5secret; /* TCP-MD5 secret key */ 119 120 struct esp_algorithm *ndo_espsecret_xform; /* cache of decoded */ 121 char *ndo_espsecret_key; 122 123 int ndo_packettype; /* as specified by -T */ 124 125 char *ndo_program_name; /*used to generate self-identifying messages */ 126 127 int32_t ndo_thiszone; /* seconds offset from gmt to local time */ 128 129 int ndo_snaplen; 130 131 /*global pointers to beginning and end of current packet (during printing) */ 132 const u_char *ndo_packetp; 133 const u_char *ndo_snapend; 134 135 /* bookkeeping for ^T output */ 136 int ndo_infodelay; 137 138 /* pointer to void function to output stuff */ 139 void (*ndo_default_print)(netdissect_options *, 140 register const u_char *bp, register u_int length); 141 void (*ndo_info)(netdissect_options *, int verbose); 142 143 int (*ndo_printf)(netdissect_options *, 144 const char *fmt, ...); 145 void (*ndo_error)(netdissect_options *, 146 const char *fmt, ...); 147 void (*ndo_warning)(netdissect_options *, 148 const char *fmt, ...); 149 }; 150 151 #define PT_VAT 1 /* Visual Audio Tool */ 152 #define PT_WB 2 /* distributed White Board */ 153 #define PT_RPC 3 /* Remote Procedure Call */ 154 #define PT_RTP 4 /* Real-Time Applications protocol */ 155 #define PT_RTCP 5 /* Real-Time Applications control protocol */ 156 #define PT_SNMP 6 /* Simple Network Management Protocol */ 157 #define PT_CNFP 7 /* Cisco NetFlow protocol */ 158 159 #ifndef min 160 #define min(a,b) ((a)>(b)?(b):(a)) 161 #endif 162 #ifndef max 163 #define max(a,b) ((b)>(a)?(b):(a)) 164 #endif 165 166 #ifndef INET6 167 /* 168 * The default snapshot length. This value allows most printers to print 169 * useful information while keeping the amount of unwanted data down. 170 * In particular, it allows for an ethernet header, tcp/ip header, and 171 * 14 bytes of data (assuming no ip options). 172 */ 173 #define DEFAULT_SNAPLEN 68 174 #else 175 #define DEFAULT_SNAPLEN 96 176 #endif 177 178 #ifndef BIG_ENDIAN 179 #define BIG_ENDIAN 4321 180 #define LITTLE_ENDIAN 1234 181 #endif 182 183 #define ESRC(ep) ((ep)->ether_shost) 184 #define EDST(ep) ((ep)->ether_dhost) 185 186 #ifndef NTOHL 187 #define NTOHL(x) (x) = ntohl(x) 188 #define NTOHS(x) (x) = ntohs(x) 189 #define HTONL(x) (x) = htonl(x) 190 #define HTONS(x) (x) = htons(x) 191 #endif 192 193 /* 194 * True if "l" bytes of "var" were captured. 195 * 196 * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure 197 * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows. 198 * 199 * The check is for <= rather than < because "l" might be 0. 200 */ 201 #define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \ 202 (const u_char *)&(var) <= ndo->ndo_snapend - (l)) 203 204 /* True if "var" was captured */ 205 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var)) 206 207 /* Bail if "l" bytes of "var" were not captured */ 208 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc 209 210 /* Bail if "var" was not captured */ 211 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var)) 212 213 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF 214 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length) 215 216 #if 0 217 extern void ts_print(netdissect_options *ipdo, 218 const struct timeval *); 219 extern void relts_print(int); 220 #endif 221 222 extern int fn_print(const u_char *, const u_char *); 223 extern int fn_printn(const u_char *, u_int, const u_char *); 224 extern const char *tok2str(const struct tok *, const char *, int); 225 226 extern void wrapup(int); 227 228 #if 0 229 extern char *read_infile(netdissect_options *, char *); 230 extern char *copy_argv(netdissect_options *, char **); 231 #endif 232 233 extern void safeputchar(int); 234 extern void safeputs(const char *, int); 235 236 #if 0 237 extern const char *isonsap_string(netdissect_options *, const u_char *); 238 extern const char *protoid_string(netdissect_options *, const u_char *); 239 extern const char *dnname_string(netdissect_options *, u_short); 240 extern const char *dnnum_string(netdissect_options *, u_short); 241 #endif 242 243 /* The printer routines. */ 244 245 #include <pcap.h> 246 247 248 extern void eap_print(netdissect_options *,const u_char *, u_int); 249 extern int esp_print(netdissect_options *, 250 register const u_char *bp, int len, register const u_char *bp2, 251 int *nhdr, int *padlen); 252 extern void arp_print(netdissect_options *,const u_char *, u_int, u_int); 253 extern void isakmp_print(netdissect_options *,const u_char *, 254 u_int, const u_char *); 255 extern void isakmp_rfc3948_print(netdissect_options *,const u_char *, 256 u_int, const u_char *); 257 extern void ip_print(netdissect_options *,const u_char *, u_int); 258 extern void ip_print_inner(netdissect_options *ndo, 259 const u_char *bp, u_int length, u_int nh, 260 const u_char *bp2); 261 262 /* stuff that has not yet been rototiled */ 263 #if 0 264 extern void ascii_print(netdissect_options *,u_int); 265 extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *, 266 u_int, u_int); 267 extern void hex_and_ascii_print(netdissect_options *,const char *, u_int); 268 extern void hex_print_with_offset(netdissect_options *,const char *, 269 u_int, u_int); 270 extern void hex_print(netdissect_options *,const char *, u_int); 271 extern void telnet_print(netdissect_options *,const u_char *, u_int); 272 extern int ether_encap_print(netdissect_options *,u_short, const u_char *, 273 u_int, u_int, u_short *); 274 extern int llc_print(netdissect_options *, 275 const u_char *, u_int, u_int, const u_char *, 276 const u_char *, u_short *); 277 extern void aarp_print(netdissect_options *,const u_char *, u_int); 278 extern void atalk_print(netdissect_options *,const u_char *, u_int); 279 extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 280 extern void bootp_print(netdissect_options *,const u_char *, 281 u_int, u_short, u_short); 282 extern void bgp_print(netdissect_options *,const u_char *, int); 283 extern void bxxp_print(netdissect_options *,const u_char *, u_int); 284 extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h, 285 register const u_char *p); 286 extern void chdlc_print(netdissect_options *ndo, 287 register const u_char *p, u_int length, u_int caplen); 288 extern void cisco_autorp_print(netdissect_options *, 289 const u_char *, u_int); 290 extern void cnfp_print(netdissect_options *,const u_char *cp, 291 u_int len, const u_char *bp); 292 extern void decnet_print(netdissect_options *,const u_char *, 293 u_int, u_int); 294 extern void default_print(netdissect_options *,const u_char *, u_int); 295 extern void dvmrp_print(netdissect_options *,const u_char *, u_int); 296 extern void egp_print(netdissect_options *,const u_char *, u_int, 297 const u_char *); 298 299 extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *); 300 extern void ether_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 301 extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 302 extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 303 304 extern void gre_print(netdissect_options *,const u_char *, u_int); 305 extern void icmp_print(netdissect_options *,const u_char *, u_int, 306 const u_char *); 307 extern void hsrp_print(netdissect_options *ndo, 308 register const u_char *bp, register u_int len); 309 extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 310 extern void igmp_print(netdissect_options *, 311 register const u_char *, u_int); 312 extern void igrp_print(netdissect_options *,const u_char *, u_int, 313 const u_char *); 314 extern void ipN_print(netdissect_options *,const u_char *, u_int); 315 extern void ipx_print(netdissect_options *,const u_char *, u_int); 316 extern void isoclns_print(netdissect_options *,const u_char *, 317 u_int, u_int, const u_char *, const u_char *); 318 extern void krb_print(netdissect_options *,const u_char *, u_int); 319 extern void llap_print(netdissect_options *,const u_char *, u_int); 320 extern const char *linkaddr_string(netdissect_options *ndo, 321 const u_char *ep, const unsigned int len); 322 extern void ltalk_if_print(netdissect_options *ndo, 323 u_char *user, const struct pcap_pkthdr *h, 324 const u_char *p); 325 extern void mpls_print(netdissect_options *ndo, 326 const u_char *bp, u_int length); 327 extern void msdp_print(netdissect_options *ndo, 328 const unsigned char *sp, u_int length); 329 extern void nfsreply_print(netdissect_options *,const u_char *, 330 u_int, const u_char *); 331 extern void nfsreq_print(netdissect_options *,const u_char *, 332 u_int, const u_char *); 333 extern void ns_print(netdissect_options *,const u_char *, u_int); 334 extern void ntp_print(netdissect_options *,const u_char *, u_int); 335 extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 336 extern void ospf_print(netdissect_options *,const u_char *, 337 u_int, const u_char *); 338 extern void pimv1_print(netdissect_options *,const u_char *, u_int); 339 extern void mobile_print(netdissect_options *,const u_char *, u_int); 340 extern void pim_print(netdissect_options *,const u_char *, u_int); 341 extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 342 extern void pppoe_print(netdissect_options *,const u_char *, u_int); 343 extern void ppp_print(netdissect_options *, 344 register const u_char *, u_int); 345 346 extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 347 extern void ppp_hdlc_if_print(u_char *, 348 const struct pcap_pkthdr *, const u_char *); 349 extern void ppp_bsdos_if_print(u_char *, 350 const struct pcap_pkthdr *, const u_char *); 351 352 extern int vjc_print(netdissect_options *,register const char *, 353 register u_int, u_short); 354 355 extern void raw_if_print(u_char *, 356 const struct pcap_pkthdr *, const u_char *); 357 358 extern void rip_print(netdissect_options *,const u_char *, u_int); 359 360 extern void sctp_print(netdissect_options *ndo, 361 const u_char *bp, const u_char *bp2, 362 u_int sctpPacketLength); 363 364 extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 365 366 extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 367 extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 368 extern void sl_bsdos_if_print(u_char *, 369 const struct pcap_pkthdr *, const u_char *); 370 extern void sll_if_print(u_char *, 371 const struct pcap_pkthdr *, const u_char *); 372 373 extern void snmp_print(netdissect_options *,const u_char *, u_int); 374 extern void sunrpcrequest_print(netdissect_options *,const u_char *, 375 u_int, const u_char *); 376 extern void tcp_print(netdissect_options *,const u_char *, u_int, 377 const u_char *, int); 378 extern void tftp_print(netdissect_options *,const u_char *, u_int); 379 extern void timed_print(netdissect_options *,const u_char *, u_int); 380 extern void udp_print(netdissect_options *,const u_char *, u_int, 381 const u_char *, int); 382 extern void wb_print(netdissect_options *,const void *, u_int); 383 extern int ah_print(netdissect_options *,register const u_char *, 384 register const u_char *); 385 extern void esp_print_decodesecret(netdissect_options *ndo); 386 extern int ipcomp_print(netdissect_options *,register const u_char *, 387 register const u_char *, int *); 388 extern void rx_print(netdissect_options *,register const u_char *, 389 int, int, int, u_char *); 390 extern void netbeui_print(netdissect_options *,u_short, 391 const u_char *, int); 392 extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int); 393 extern void nbt_tcp_print(netdissect_options *,const u_char *, int); 394 extern void nbt_udp137_print(netdissect_options *, 395 const u_char *data, int); 396 extern void nbt_udp138_print(netdissect_options *, 397 const u_char *data, int); 398 extern char *smb_errstr(netdissect_options *,int, int); 399 extern const char *nt_errstr(netdissect_options *, u_int32_t); 400 extern void print_data(netdissect_options *,const unsigned char *, int); 401 extern void l2tp_print(netdissect_options *,const u_char *, u_int); 402 extern void lcp_print(netdissect_options *,const u_char *, u_int); 403 extern void vrrp_print(netdissect_options *,const u_char *bp, 404 u_int len, int ttl); 405 extern void cdp_print(netdissect_options *,const u_char *, 406 u_int, u_int, const u_char *, const u_char *); 407 extern void stp_print(netdissect_options *,const u_char *p, u_int length); 408 extern void radius_print(netdissect_options *,const u_char *, u_int); 409 extern void lwres_print(netdissect_options *,const u_char *, u_int); 410 extern void pptp_print(netdissect_options *,const u_char *, u_int); 411 412 #ifdef INET6 413 extern void ip6_print(netdissect_options *,const u_char *, u_int); 414 extern void ip6_opt_print(netdissect_options *,const u_char *, int); 415 extern int hbhopt_print(netdissect_options *,const u_char *); 416 extern int dstopt_print(netdissect_options *,const u_char *); 417 extern int frag6_print(netdissect_options *,const u_char *, 418 const u_char *); 419 extern void icmp6_print(netdissect_options *,const u_char *, 420 const u_char *); 421 extern void ripng_print(netdissect_options *,const u_char *, int); 422 extern int rt6_print(netdissect_options *,const u_char *, const u_char *); 423 extern void ospf6_print(netdissect_options *,const u_char *, u_int); 424 extern void dhcp6_print(netdissect_options *,const u_char *, 425 u_int, u_int16_t, u_int16_t); 426 427 extern void zephyr_print(netdissect_options * ndo, 428 const u_char *cp, int length); 429 430 #endif /*INET6*/ 431 extern u_short in_cksum(const u_short *, 432 register u_int, int); 433 434 #endif 435 436 #endif /* netdissect_h */ 437