The Tcpdump Group git mirrors - tcpdump/blob - netdissect.h

   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 1.12 2004-11-07 22:05:20 guy 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   const char *ndo_dltname;
 112
 113   char *ndo_espsecret;
 114   struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
 115   struct sa_list *ndo_sa_default;
 116
 117   char *ndo_tcpmd5secret;       /* TCP-MD5 secret key */
 118
 119   struct esp_algorithm *ndo_espsecret_xform;   /* cache of decoded  */
 120   char                 *ndo_espsecret_key;
 121
 122   int   ndo_packettype; /* as specified by -T */
 123
 124   char *ndo_program_name;       /*used to generate self-identifying messages */
 125
 126   int32_t ndo_thiszone; /* seconds offset from gmt to local time */
 127
 128   int   ndo_snaplen;
 129
 130   /*global pointers to beginning and end of current packet (during printing) */
 131   const u_char *ndo_packetp;
 132   const u_char *ndo_snapend;
 133
 134   /* bookkeeping for ^T output */
 135   int ndo_infodelay;
 136
 137   /* pointer to void function to output stuff */
 138   void (*ndo_default_print)(netdissect_options *,
 139                       register const u_char *bp, register u_int length);
 140   void (*ndo_default_print_unaligned)(netdissect_options *,
 141                       register const u_char *bp, register u_int length);
 142   void (*ndo_info)(netdissect_options *, int verbose);
 143
 144   int  (*ndo_printf)(netdissect_options *,
 145                      const char *fmt, ...);
 146   void (*ndo_error)(netdissect_options *,
 147                     const char *fmt, ...);
 148   void (*ndo_warning)(netdissect_options *,
 149                       const char *fmt, ...);
 150 };
 151
 152 #define PT_VAT          1       /* Visual Audio Tool */
 153 #define PT_WB           2       /* distributed White Board */
 154 #define PT_RPC          3       /* Remote Procedure Call */
 155 #define PT_RTP          4       /* Real-Time Applications protocol */
 156 #define PT_RTCP         5       /* Real-Time Applications control protocol */
 157 #define PT_SNMP         6       /* Simple Network Management Protocol */
 158 #define PT_CNFP         7       /* Cisco NetFlow protocol */
 159
 160 #ifndef min
 161 #define min(a,b) ((a)>(b)?(b):(a))
 162 #endif
 163 #ifndef max
 164 #define max(a,b) ((b)>(a)?(b):(a))
 165 #endif
 166
 167 #ifndef INET6
 168 /*
 169  * The default snapshot length.  This value allows most printers to print
 170  * useful information while keeping the amount of unwanted data down.
 171  * In particular, it allows for an ethernet header, tcp/ip header, and
 172  * 14 bytes of data (assuming no ip options).
 173  */
 174 #define DEFAULT_SNAPLEN 68
 175 #else
 176 #define DEFAULT_SNAPLEN 96
 177 #endif
 178
 179 #ifndef BIG_ENDIAN
 180 #define BIG_ENDIAN 4321
 181 #define LITTLE_ENDIAN 1234
 182 #endif
 183
 184 #define ESRC(ep) ((ep)->ether_shost)
 185 #define EDST(ep) ((ep)->ether_dhost)
 186
 187 #ifndef NTOHL
 188 #define NTOHL(x)        (x) = ntohl(x)
 189 #define NTOHS(x)        (x) = ntohs(x)
 190 #define HTONL(x)        (x) = htonl(x)
 191 #define HTONS(x)        (x) = htons(x)
 192 #endif
 193
 194 /*
 195  * True if "l" bytes of "var" were captured.
 196  *
 197  * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
 198  * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
 199  *
 200  * The check is for <= rather than < because "l" might be 0.
 201  */
 202 #define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \
 203                         (const u_char *)&(var) <= ndo->ndo_snapend - (l))
 204
 205 /* True if "var" was captured */
 206 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
 207
 208 /* Bail if "l" bytes of "var" were not captured */
 209 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
 210
 211 /* Bail if "var" was not captured */
 212 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
 213
 214 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
 215 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
 216
 217 #if 0
 218 extern void ts_print(netdissect_options *ipdo,
 219                      const struct timeval *);
 220 extern void relts_print(int);
 221 #endif
 222
 223 extern int fn_print(const u_char *, const u_char *);
 224 extern int fn_printn(const u_char *, u_int, const u_char *);
 225 extern const char *tok2str(const struct tok *, const char *, int);
 226
 227 extern void wrapup(int);
 228
 229 #if 0
 230 extern char *read_infile(netdissect_options *, char *);
 231 extern char *copy_argv(netdissect_options *, char **);
 232 #endif
 233
 234 extern void safeputchar(int);
 235 extern void safeputs(const char *);
 236
 237 #if 0
 238 extern const char *isonsap_string(netdissect_options *, const u_char *);
 239 extern const char *llcsap_string(netdissect_options *, u_char);
 240 extern const char *protoid_string(netdissect_options *, const u_char *);
 241 extern const char *dnname_string(netdissect_options *, u_short);
 242 extern const char *dnnum_string(netdissect_options *, u_short);
 243 #endif
 244
 245 /* The printer routines. */
 246
 247 #include <pcap.h>
 248
 249
 250 extern void eap_print(netdissect_options *,const u_char *, u_int);
 251 extern int esp_print(netdissect_options *,
 252                      register const u_char *bp, int len, register const u_char *bp2,
 253                      int *nhdr, int *padlen);
 254 extern void arp_print(netdissect_options *,const u_char *, u_int, u_int);
 255
 256 #if 0
 257 extern void ascii_print_with_offset(netdissect_options *, const char *,
 258                                     u_int, u_int);
 259 extern void ascii_print(netdissect_options *,const char *, u_int);
 260 extern void hex_print_with_offset(netdissect_options *,const char *,
 261                                   u_int, u_int);
 262 extern void telnet_print(netdissect_options *,const u_char *, u_int);
 263 extern void hex_print(netdissect_options *,const char *, u_int);
 264 extern int ether_encap_print(netdissect_options *,u_short, const u_char *,
 265                              u_int, u_int, u_short *);
 266 extern int llc_print(netdissect_options *,
 267                      const u_char *, u_int, u_int, const u_char *,
 268                      const u_char *, u_short *);
 269 extern void aarp_print(netdissect_options *,const u_char *, u_int);
 270 extern void atalk_print(netdissect_options *,const u_char *, u_int);
 271 extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 272 extern void bootp_print(netdissect_options *,const u_char *,
 273                         u_int, u_short, u_short);
 274 extern void bgp_print(netdissect_options *,const u_char *, int);
 275 extern void bxxp_print(netdissect_options *,const u_char *, u_int);
 276 extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
 277                            register const u_char *p);
 278 extern void chdlc_print(netdissect_options *ndo,
 279                         register const u_char *p, u_int length, u_int caplen);
 280 extern void cisco_autorp_print(netdissect_options *,
 281                                const u_char *, u_int);
 282 extern void cnfp_print(netdissect_options *,const u_char *cp,
 283                        u_int len, const u_char *bp);
 284 extern void decnet_print(netdissect_options *,const u_char *,
 285                          u_int, u_int);
 286 extern void default_print(netdissect_options *,const u_char *, u_int);
 287 extern void default_print_unaligned(netdissect_options *,const u_char *,
 288                                     u_int);
 289 extern void dvmrp_print(netdissect_options *,const u_char *, u_int);
 290 extern void egp_print(netdissect_options *,const u_char *, u_int,
 291                       const u_char *);
 292
 293 extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *);
 294 extern void ether_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 295 extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 296 extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 297
 298 extern void gre_print(netdissect_options *,const u_char *, u_int);
 299 extern void icmp_print(netdissect_options *,const u_char *, u_int,
 300                        const u_char *);
 301 extern void hsrp_print(netdissect_options *ndo,
 302                        register const u_char *bp, register u_int len);
 303 extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 304 extern void igmp_print(netdissect_options *,
 305                        register const u_char *, u_int);
 306 extern void igrp_print(netdissect_options *,const u_char *, u_int,
 307                        const u_char *);
 308 extern void ip_print(netdissect_options *,const u_char *, u_int);
 309 extern void ipN_print(netdissect_options *,const u_char *, u_int);
 310 extern void ipx_print(netdissect_options *,const u_char *, u_int);
 311 extern void isoclns_print(netdissect_options *,const u_char *,
 312                           u_int, u_int, const u_char *, const u_char *);
 313 extern void krb_print(netdissect_options *,const u_char *, u_int);
 314 extern void llap_print(netdissect_options *,const u_char *, u_int);
 315 extern const char *linkaddr_string(netdissect_options *ndo,
 316                                    const u_char *ep, const unsigned int len);
 317 extern void ltalk_if_print(netdissect_options *ndo,
 318                            u_char *user, const struct pcap_pkthdr *h,
 319                            const u_char *p);
 320 extern void mpls_print(netdissect_options *ndo,
 321                        const u_char *bp, u_int length);
 322 extern void msdp_print(netdissect_options *ndo,
 323                        const unsigned char *sp, u_int length);
 324 extern void nfsreply_print(netdissect_options *,const u_char *,
 325                            u_int, const u_char *);
 326 extern void nfsreq_print(netdissect_options *,const u_char *,
 327                          u_int, const u_char *);
 328 extern void ns_print(netdissect_options *,const u_char *, u_int);
 329 extern void ntp_print(netdissect_options *,const u_char *, u_int);
 330 extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 331 extern void ospf_print(netdissect_options *,const u_char *,
 332                        u_int, const u_char *);
 333 extern void pimv1_print(netdissect_options *,const u_char *, u_int);
 334 extern void mobile_print(netdissect_options *,const u_char *, u_int);
 335 extern void pim_print(netdissect_options *,const u_char *, u_int);
 336 extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 337 extern void pppoe_print(netdissect_options *,const u_char *, u_int);
 338 extern void ppp_print(netdissect_options *,
 339                       register const u_char *, u_int);
 340
 341 extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 342 extern void ppp_hdlc_if_print(u_char *,
 343                               const struct pcap_pkthdr *, const u_char *);
 344 extern void ppp_bsdos_if_print(u_char *,
 345                                const struct pcap_pkthdr *, const u_char *);
 346
 347 extern int vjc_print(netdissect_options *,register const char *,
 348                      register u_int, u_short);
 349
 350 extern void raw_if_print(u_char *,
 351                          const struct pcap_pkthdr *, const u_char *);
 352
 353 extern void rip_print(netdissect_options *,const u_char *, u_int);
 354
 355 extern void sctp_print(netdissect_options *ndo,
 356                        const u_char *bp, const u_char *bp2,
 357                        u_int sctpPacketLength);
 358
 359 extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 360
 361 extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 362 extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 363 extern void sl_bsdos_if_print(u_char *,
 364                               const struct pcap_pkthdr *, const u_char *);
 365 extern void sll_if_print(u_char *,
 366                          const struct pcap_pkthdr *, const u_char *);
 367
 368 extern void snmp_print(netdissect_options *,const u_char *, u_int);
 369 extern void sunrpcrequest_print(netdissect_options *,const u_char *,
 370                                 u_int, const u_char *);
 371 extern void tcp_print(netdissect_options *,const u_char *, u_int,
 372                       const u_char *, int);
 373 extern void tftp_print(netdissect_options *,const u_char *, u_int);
 374 extern void timed_print(netdissect_options *,const u_char *, u_int);
 375 extern void udp_print(netdissect_options *,const u_char *, u_int,
 376                       const u_char *, int);
 377 extern void wb_print(netdissect_options *,const void *, u_int);
 378 extern int ah_print(netdissect_options *,register const u_char *,
 379                     register const u_char *);
 380 extern void esp_print_decodesecret(netdissect_options *ndo);
 381 extern void isakmp_print(netdissect_options *,const u_char *,
 382                          u_int, const u_char *);
 383 extern int ipcomp_print(netdissect_options *,register const u_char *,
 384                         register const u_char *, int *);
 385 extern void rx_print(netdissect_options *,register const u_char *,
 386                      int, int, int, u_char *);
 387 extern void netbeui_print(netdissect_options *,u_short,
 388                           const u_char *, int);
 389 extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int);
 390 extern void nbt_tcp_print(netdissect_options *,const u_char *, int);
 391 extern void nbt_udp137_print(netdissect_options *,
 392                              const u_char *data, int);
 393 extern void nbt_udp138_print(netdissect_options *,
 394                              const u_char *data, int);
 395 extern char *smb_errstr(netdissect_options *,int, int);
 396 extern void print_data(netdissect_options *,const unsigned char *, int);
 397 extern void l2tp_print(netdissect_options *,const u_char *, u_int);
 398 extern void lcp_print(netdissect_options *,const u_char *, u_int);
 399 extern void vrrp_print(netdissect_options *,const u_char *bp,
 400                        u_int len, int ttl);
 401 extern void cdp_print(netdissect_options *,const u_char *,
 402                       u_int, u_int, const u_char *, const u_char *);
 403 extern void stp_print(netdissect_options *,const u_char *p, u_int length);
 404 extern void radius_print(netdissect_options *,const u_char *, u_int);
 405 extern void lwres_print(netdissect_options *,const u_char *, u_int);
 406 extern void pptp_print(netdissect_options *,const u_char *, u_int);
 407
 408 #ifdef INET6
 409 extern void ip6_print(netdissect_options *,const u_char *, u_int);
 410 extern void ip6_opt_print(netdissect_options *,const u_char *, int);
 411 extern int hbhopt_print(netdissect_options *,const u_char *);
 412 extern int dstopt_print(netdissect_options *,const u_char *);
 413 extern int frag6_print(netdissect_options *,const u_char *,
 414                        const u_char *);
 415 extern void icmp6_print(netdissect_options *,const u_char *,
 416                         const u_char *);
 417 extern void ripng_print(netdissect_options *,const u_char *, int);
 418 extern int rt6_print(netdissect_options *,const u_char *, const u_char *);
 419 extern void ospf6_print(netdissect_options *,const u_char *, u_int);
 420 extern void dhcp6_print(netdissect_options *,const u_char *,
 421                         u_int, u_int16_t, u_int16_t);
 422
 423 extern void zephyr_print(netdissect_options * ndo,
 424                          const u_char *cp, int length);
 425
 426 #endif /*INET6*/
 427 extern u_short in_cksum(const u_short *,
 428                         register u_int, int);
 429
 430 #endif
 431
 432 #endif  /* netdissect_h */