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

   1 /*
   2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 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  * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.119 2000-01-07 15:59:28 assar Exp $ (LBL)
  22  */
  23
  24 #ifndef tcpdump_interface_h
  25 #define tcpdump_interface_h
  26
  27 #include "gnuc.h"
  28 #ifdef HAVE_OS_PROTO_H
  29 #include "os-proto.h"
  30 #endif
  31 #include <sys/types.h>
  32 #include <sys/time.h>
  33
  34 /* snprintf et al */
  35
  36 #include <stdarg.h>
  37
  38 #if !defined(HAVE_SNPRINTF)
  39 int snprintf (char *str, size_t sz, const char *format, ...)
  40      __attribute__ ((format (printf, 3, 4)));
  41 #endif
  42
  43 #if !defined(HAVE_VSNPRINTF)
  44 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
  45      __attribute__((format (printf, 3, 0)));
  46 #endif
  47
  48 #if !defined(HAVE_ASPRINTF)
  49 int asprintf (char **ret, const char *format, ...)
  50      __attribute__ ((format (printf, 2, 3)));
  51 #endif
  52
  53 #if !defined(HAVE_VASPRINTF)
  54 int vasprintf (char **ret, const char *format, va_list ap)
  55      __attribute__((format (printf, 2, 0)));
  56 #endif
  57
  58 #if !defined(HAVE_ASNPRINTF)
  59 int asnprintf (char **ret, size_t max_sz, const char *format, ...)
  60      __attribute__ ((format (printf, 3, 4)));
  61 #endif
  62
  63 #if !defined(HAVE_VASNPRINTF)
  64 int vasnprintf (char **ret, size_t max_sz, const char *format, va_list ap)
  65      __attribute__((format (printf, 3, 0)));
  66 #endif
  67
  68 struct tok {
  69         int v;                  /* value */
  70         char *s;                /* string */
  71 };
  72
  73 extern int aflag;               /* translate network and broadcast addresses */
  74 extern int dflag;               /* print filter code */
  75 extern int eflag;               /* print ethernet header */
  76 extern int fflag;               /* don't translate "foreign" IP address */
  77 extern int nflag;               /* leave addresses as numbers */
  78 extern int Nflag;               /* remove domains from printed host names */
  79 extern int qflag;               /* quick (shorter) output */
  80 extern int Rflag;               /* print sequence # field in AH/ESP*/
  81 extern int sflag;               /* use the libsmi to translate OIDs */
  82 extern int Sflag;               /* print raw TCP sequence numbers */
  83 extern int tflag;               /* print packet arrival time */
  84 extern int vflag;               /* verbose */
  85 extern int xflag;               /* print packet in hex */
  86 extern int Xflag;               /* print packet in hex/ascii */
  87
  88 extern char *ahsecret;
  89 extern char *espsecret;
  90
  91 extern int packettype;          /* as specified by -T */
  92 #define PT_VAT          1       /* Visual Audio Tool */
  93 #define PT_WB           2       /* distributed White Board */
  94 #define PT_RPC          3       /* Remote Procedure Call */
  95 #define PT_RTP          4       /* Real-Time Applications protocol */
  96 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  97 #define PT_SNMP         6       /* Simple Network Management Protocol */
  98
  99 #ifndef min
 100 #define min(a,b) ((a)>(b)?(b):(a))
 101 #endif
 102 #ifndef max
 103 #define max(a,b) ((b)>(a)?(b):(a))
 104 #endif
 105
 106 #ifndef INET6
 107 /*
 108  * The default snapshot length.  This value allows most printers to print
 109  * useful information while keeping the amount of unwanted data down.
 110  * In particular, it allows for an ethernet header, tcp/ip header, and
 111  * 14 bytes of data (assuming no ip options).
 112  */
 113 #define DEFAULT_SNAPLEN 68
 114 #else
 115 #define DEFAULT_SNAPLEN 96
 116 #endif
 117
 118 #ifndef BIG_ENDIAN
 119 #define BIG_ENDIAN 4321
 120 #define LITTLE_ENDIAN 1234
 121 #endif
 122
 123 #ifdef ETHER_HEADER_HAS_EA
 124 #define ESRC(ep) ((ep)->ether_shost.ether_addr_octet)
 125 #define EDST(ep) ((ep)->ether_dhost.ether_addr_octet)
 126 #else
 127 #define ESRC(ep) ((ep)->ether_shost)
 128 #define EDST(ep) ((ep)->ether_dhost)
 129 #endif
 130
 131 #ifdef ETHER_ARP_HAS_X
 132 #define SHA(ap) ((ap)->arp_xsha)
 133 #define THA(ap) ((ap)->arp_xtha)
 134 #define SPA(ap) ((ap)->arp_xspa)
 135 #define TPA(ap) ((ap)->arp_xtpa)
 136 #else
 137 #ifdef ETHER_ARP_HAS_EA
 138 #define SHA(ap) ((ap)->arp_sha.ether_addr_octet)
 139 #define THA(ap) ((ap)->arp_tha.ether_addr_octet)
 140 #else
 141 #define SHA(ap) ((ap)->arp_sha)
 142 #define THA(ap) ((ap)->arp_tha)
 143 #endif
 144 #define SPA(ap) ((ap)->arp_spa)
 145 #define TPA(ap) ((ap)->arp_tpa)
 146 #endif
 147
 148 #ifndef NTOHL
 149 #define NTOHL(x)        (x) = ntohl(x)
 150 #define NTOHS(x)        (x) = ntohs(x)
 151 #define HTONL(x)        (x) = htonl(x)
 152 #define HTONS(x)        (x) = htons(x)
 153 #endif
 154 #endif
 155
 156 extern char *program_name;      /* used to generate self-identifying messages */
 157
 158 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 159
 160 extern int snaplen;
 161 /* global pointers to beginning and end of current packet (during printing) */
 162 extern const u_char *packetp;
 163 extern const u_char *snapend;
 164
 165 /* True if  "l" bytes of "var" were captured */
 166 #define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
 167
 168 /* True if "var" was captured */
 169 #define TTEST(var) TTEST2(var, sizeof(var))
 170
 171 /* Bail if "l" bytes of "var" were not captured */
 172 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 173
 174 /* Bail if "var" was not captured */
 175 #define TCHECK(var) TCHECK2(var, sizeof(var))
 176
 177 #ifdef __STDC__
 178 struct timeval;
 179 #endif
 180
 181 extern void ts_print(const struct timeval *);
 182 extern void relts_print(int);
 183
 184 extern int fn_print(const u_char *, const u_char *);
 185 extern int fn_printn(const u_char *, u_int, const u_char *);
 186 extern const char *tok2str(const struct tok *, const char *, int);
 187 extern char *dnaddr_string(u_short);
 188
 189 extern void wrapup(int);
 190
 191 #if __STDC__
 192 extern __dead void error(const char *, ...)
 193     __attribute__((volatile, format (printf, 1, 2)));
 194 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 195 #endif
 196
 197 extern char *read_infile(char *);
 198 extern char *copy_argv(char **);
 199
 200 extern char *isonsap_string(const u_char *);
 201 extern char *llcsap_string(u_char);
 202 extern char *protoid_string(const u_char *);
 203 extern char *dnname_string(u_short);
 204 extern char *dnnum_string(u_short);
 205
 206 /* The printer routines. */
 207
 208 #ifdef __STDC__
 209 struct pcap_pkthdr;
 210 #endif
 211
 212 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 213 extern void ascii_print(const u_char *, u_int);
 214 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 215 extern void telnet_print(const u_char *, u_int);
 216 extern void hex_print(const u_char *, u_int);
 217 extern int ether_encap_print(u_short, const u_char *, u_int, u_int);
 218 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 219         const u_char *);
 220 extern void aarp_print(const u_char *, u_int);
 221 extern void arp_print(const u_char *, u_int, u_int);
 222 extern void atalk_print(const u_char *, u_int);
 223 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 224 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 225 extern void bgp_print(const u_char *, int);
 226 extern void decnet_print(const u_char *, u_int, u_int);
 227 extern void default_print(const u_char *, u_int);
 228 extern void default_print_unaligned(const u_char *, u_int);
 229 extern void dvmrp_print(const u_char *, u_int);
 230 extern void egp_print(const u_char *, u_int, const u_char *);
 231 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 232         const u_char *);
 233 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 234 extern void gre_print(const u_char *, u_int);
 235 extern void icmp_print(const u_char *, u_int, const u_char *);
 236 extern void igrp_print(const u_char *, u_int, const u_char *);
 237 extern void ip_print(const u_char *, u_int);
 238 extern void ipx_print(const u_char *, u_int);
 239 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 240         const u_char *);
 241 extern void krb_print(const u_char *, u_int);
 242 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 243 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 244 extern void ns_print(const u_char *, u_int);
 245 extern void ntp_print(const u_char *, u_int);
 246 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 247 extern void ospf_print(const u_char *, u_int, const u_char *);
 248 extern void pimv1_print(const u_char *, u_int);
 249 extern void cisco_autorp_print(const u_char *, u_int);
 250 extern void mobile_print(const u_char *, u_int);
 251 extern void pim_print(const u_char *, u_int);
 252 extern void pppoe_print(const u_char *, u_int);
 253 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 254 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 255         const u_char *);
 256 extern int vjc_print(register const char *, register u_int, u_short);
 257 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 258 extern void rip_print(const u_char *, u_int);
 259 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 260 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 261 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 262 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 263     const u_char *);
 264 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 265     const u_char *);
 266 extern void snmp_print(const u_char *, u_int);
 267 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 268 extern void tcp_print(const u_char *, u_int, const u_char *);
 269 extern void tftp_print(const u_char *, u_int);
 270 extern void udp_print(const u_char *, u_int, const u_char *);
 271 extern void wb_print(const void *, u_int);
 272 extern int ah_print(register const u_char *, register const u_char *);
 273 extern int esp_print(register const u_char *, register const u_char *, int *);
 274 extern void isakmp_print(const u_char *, u_int, const u_char *);
 275 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 276 extern void rx_print(register const u_char *, int, int, int, u_char *);
 277 extern void netbeui_print(const u_char *, const u_char *);
 278 extern void ipx_netbios_print(const u_char *, const u_char *);
 279 extern void nbt_tcp_print(const u_char *, int);
 280 extern void nbt_udp137_print(const u_char *data, int);
 281 extern void nbt_udp138_print(const u_char *data, int);
 282 extern char *smb_errstr(int, int);
 283 extern void print_data(const unsigned char *, int);
 284 extern void l2tp_print(const u_char *, u_int);
 285 extern void lcp_print(const u_char *, u_int);
 286
 287 #ifdef INET6
 288 extern void ip6_print(const u_char *, int);
 289 extern void ip6_opt_print(const u_char *, int);
 290 extern int hbhopt_print(const u_char *);
 291 extern int dstopt_print(const u_char *);
 292 extern int frag6_print(const u_char *, const u_char *);
 293 extern void icmp6_print(const u_char *, const u_char *);
 294 extern void ripng_print(const u_char *, int);
 295 extern int rt6_print(const u_char *, const u_char *);
 296 extern void ospf6_print(const u_char *, u_int);
 297 extern void dhcp6_print(const u_char *, u_int, u_short, u_short);
 298 #endif /*INET6*/
 299 extern u_short in_cksum(const u_short *addr, register int len, u_short csum);