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 1.150 2001-01-15 03:23:58 guy Exp $ (LBL)
  22  */
  23
  24 #ifndef tcpdump_interface_h
  25 #define tcpdump_interface_h
  26
  27 #ifdef HAVE_OS_PROTO_H
  28 #include "os-proto.h"
  29 #endif
  30 #include <sys/types.h>
  31 #include <sys/time.h>
  32
  33 #ifndef HAVE___ATTRIBUTE__
  34 #define __attribute__(x)
  35 #endif
  36
  37 /* snprintf et al */
  38
  39 #include <stdarg.h>
  40
  41 #if !defined(HAVE_SNPRINTF)
  42 int snprintf (char *str, size_t sz, const char *format, ...)
  43      __attribute__ ((format (printf, 3, 4)));
  44 #endif
  45
  46 #if !defined(HAVE_VSNPRINTF)
  47 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
  48      __attribute__((format (printf, 3, 0)));
  49 #endif
  50
  51 #ifndef HAVE_STRLCAT
  52 extern size_t strlcat (char *, const char *, size_t);
  53 #endif
  54 #ifndef HAVE_STRLCPY
  55 extern size_t strlcpy (char *, const char *, size_t);
  56 #endif
  57
  58 struct tok {
  59         int v;                  /* value */
  60         char *s;                /* string */
  61 };
  62
  63 extern int aflag;               /* translate network and broadcast addresses */
  64 extern int dflag;               /* print filter code */
  65 extern int eflag;               /* print ethernet header */
  66 extern int fflag;               /* don't translate "foreign" IP address */
  67 extern int nflag;               /* leave addresses as numbers */
  68 extern int Nflag;               /* remove domains from printed host names */
  69 extern int qflag;               /* quick (shorter) output */
  70 extern int Rflag;               /* print sequence # field in AH/ESP*/
  71 extern int sflag;               /* use the libsmi to translate OIDs */
  72 extern int Sflag;               /* print raw TCP sequence numbers */
  73 extern int tflag;               /* print packet arrival time */
  74 extern int uflag;               /* Print undecoded NFS handles */
  75 extern int vflag;               /* verbose */
  76 extern int xflag;               /* print packet in hex */
  77 extern int Xflag;               /* print packet in hex/ascii */
  78
  79 extern char *espsecret;
  80
  81 extern int packettype;          /* as specified by -T */
  82 #define PT_VAT          1       /* Visual Audio Tool */
  83 #define PT_WB           2       /* distributed White Board */
  84 #define PT_RPC          3       /* Remote Procedure Call */
  85 #define PT_RTP          4       /* Real-Time Applications protocol */
  86 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  87 #define PT_SNMP         6       /* Simple Network Management Protocol */
  88 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  89
  90 #ifndef min
  91 #define min(a,b) ((a)>(b)?(b):(a))
  92 #endif
  93 #ifndef max
  94 #define max(a,b) ((b)>(a)?(b):(a))
  95 #endif
  96
  97 #ifndef INET6
  98 /*
  99  * The default snapshot length.  This value allows most printers to print
 100  * useful information while keeping the amount of unwanted data down.
 101  * In particular, it allows for an ethernet header, tcp/ip header, and
 102  * 14 bytes of data (assuming no ip options).
 103  */
 104 #define DEFAULT_SNAPLEN 68
 105 #else
 106 #define DEFAULT_SNAPLEN 96
 107 #endif
 108
 109 #ifndef BIG_ENDIAN
 110 #define BIG_ENDIAN 4321
 111 #define LITTLE_ENDIAN 1234
 112 #endif
 113
 114 #define ESRC(ep) ((ep)->ether_shost)
 115 #define EDST(ep) ((ep)->ether_dhost)
 116
 117 #ifndef NTOHL
 118 #define NTOHL(x)        (x) = ntohl(x)
 119 #define NTOHS(x)        (x) = ntohs(x)
 120 #define HTONL(x)        (x) = htonl(x)
 121 #define HTONS(x)        (x) = htons(x)
 122 #endif
 123 #endif
 124
 125 extern char *program_name;      /* used to generate self-identifying messages */
 126
 127 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 128
 129 extern int snaplen;
 130 /* global pointers to beginning and end of current packet (during printing) */
 131 extern const u_char *packetp;
 132 extern const u_char *snapend;
 133
 134 /* True if  "l" bytes of "var" were captured */
 135 #define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
 136
 137 /* True if "var" was captured */
 138 #define TTEST(var) TTEST2(var, sizeof(var))
 139
 140 /* Bail if "l" bytes of "var" were not captured */
 141 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 142
 143 /* Bail if "var" was not captured */
 144 #define TCHECK(var) TCHECK2(var, sizeof(var))
 145
 146 struct timeval;
 147
 148 extern void ts_print(const struct timeval *);
 149 extern void relts_print(int);
 150
 151 extern int fn_print(const u_char *, const u_char *);
 152 extern int fn_printn(const u_char *, u_int, const u_char *);
 153 extern const char *tok2str(const struct tok *, const char *, int);
 154 extern char *dnaddr_string(u_short);
 155
 156 extern void wrapup(int);
 157
 158 extern void error(const char *, ...)
 159     __attribute__((noreturn, format (printf, 1, 2)));
 160 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 161
 162 extern char *read_infile(char *);
 163 extern char *copy_argv(char **);
 164
 165 extern void safeputchar(int);
 166 extern void safeputs(const char *);
 167
 168 extern char *isonsap_string(const u_char *);
 169 extern char *llcsap_string(u_char);
 170 extern char *protoid_string(const u_char *);
 171 extern char *dnname_string(u_short);
 172 extern char *dnnum_string(u_short);
 173
 174 /* The printer routines. */
 175
 176 struct pcap_pkthdr;
 177
 178 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 179 extern void ascii_print(const u_char *, u_int);
 180 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 181 extern void telnet_print(const u_char *, u_int);
 182 extern void hex_print(const u_char *, u_int);
 183 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 184 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 185         const u_char *, u_short *);
 186 extern void aarp_print(const u_char *, u_int);
 187 extern void arp_print(const u_char *, u_int, u_int);
 188 extern void atalk_print(const u_char *, u_int);
 189 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 190 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 191 extern void bgp_print(const u_char *, int);
 192 extern void bxxp_print(const u_char *, u_int);
 193 extern void cnfp_print(const u_char *cp, u_int len, const u_char *bp);
 194 extern void decnet_print(const u_char *, u_int, u_int);
 195 extern void default_print(const u_char *, u_int);
 196 extern void default_print_unaligned(const u_char *, u_int);
 197 extern void dvmrp_print(const u_char *, u_int);
 198 extern void egp_print(const u_char *, u_int, const u_char *);
 199 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 200         const u_char *);
 201 extern void token_if_print(u_char *, const struct pcap_pkthdr *,
 202         const u_char *);
 203 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 204 extern void gre_print(const u_char *, u_int);
 205 extern void icmp_print(const u_char *, u_int, const u_char *);
 206 extern void igmp_print(const u_char *, u_int, const u_char *);
 207 extern void igrp_print(const u_char *, u_int, const u_char *);
 208 extern void ip_print(const u_char *, u_int);
 209 extern void ipN_print(const u_char *, u_int);
 210 extern void ipx_print(const u_char *, u_int);
 211 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 212         const u_char *);
 213 extern void krb_print(const u_char *, u_int);
 214 extern void llap_print(const u_char *, u_int);
 215 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 216 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 217 extern void ns_print(const u_char *, u_int);
 218 extern void ntp_print(const u_char *, u_int);
 219 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 220 extern void ospf_print(const u_char *, u_int, const u_char *);
 221 extern void pimv1_print(const u_char *, u_int);
 222 extern void cisco_autorp_print(const u_char *, u_int);
 223 extern void mobile_print(const u_char *, u_int);
 224 extern void pim_print(const u_char *, u_int);
 225 extern void pppoe_print(const u_char *, u_int);
 226 extern void ppp_print(register const u_char *, u_int);
 227 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 228 extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *,
 229         const u_char *);
 230 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 231         const u_char *);
 232 extern int vjc_print(register const char *, register u_int, u_short);
 233 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 234 extern void rip_print(const u_char *, u_int);
 235 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 236 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 237 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 238 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 239     const u_char *);
 240 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 241     const u_char *);
 242 extern void sll_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 243 extern void snmp_print(const u_char *, u_int);
 244 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 245 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 246 extern void tftp_print(const u_char *, u_int);
 247 extern void timed_print(const u_char *, u_int);
 248 extern void udp_print(const u_char *, u_int, const u_char *, int);
 249 extern void wb_print(const void *, u_int);
 250 extern int ah_print(register const u_char *, register const u_char *);
 251 extern int esp_print(register const u_char *, register const u_char *, int *);
 252 extern void isakmp_print(const u_char *, u_int, const u_char *);
 253 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 254 extern void rx_print(register const u_char *, int, int, int, u_char *);
 255 extern void netbeui_print(u_short, const u_char *, const u_char *);
 256 extern void ipx_netbios_print(const u_char *, u_int);
 257 extern void nbt_tcp_print(const u_char *, int);
 258 extern void nbt_udp137_print(const u_char *data, int);
 259 extern void nbt_udp138_print(const u_char *data, int);
 260 extern char *smb_errstr(int, int);
 261 extern void print_data(const unsigned char *, int);
 262 extern void l2tp_print(const u_char *, u_int);
 263 extern void lcp_print(const u_char *, u_int);
 264 extern void vrrp_print(const u_char *bp, u_int len, int ttl);
 265 extern void cdp_print(const u_char *p, u_int length, u_int caplen,
 266                       const u_char *esrc, const u_char *edst);
 267 extern void stp_print(const u_char *p, u_int length);
 268 extern void radius_print(const u_char *, u_int);
 269
 270 #ifdef INET6
 271 extern void ip6_print(const u_char *, int);
 272 extern void ip6_opt_print(const u_char *, int);
 273 extern int hbhopt_print(const u_char *);
 274 extern int dstopt_print(const u_char *);
 275 extern int frag6_print(const u_char *, const u_char *);
 276 extern void icmp6_print(const u_char *, const u_char *);
 277 extern void ripng_print(const u_char *, int);
 278 extern int rt6_print(const u_char *, const u_char *);
 279 extern void ospf6_print(const u_char *, u_int);
 280 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t);
 281 #endif /*INET6*/
 282 extern u_short in_cksum(const u_short *addr, register int len, u_short csum);