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 1.111 1999-11-21 03:43:23 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
  32 struct tok {
  33         int v;                  /* value */
  34         char *s;                /* string */
  35 };
  36
  37 extern int aflag;               /* translate network and broadcast addresses */
  38 extern int dflag;               /* print filter code */
  39 extern int eflag;               /* print ethernet header */
  40 extern int fflag;               /* don't translate "foreign" IP address */
  41 extern int nflag;               /* leave addresses as numbers */
  42 extern int Nflag;               /* remove domains from printed host names */
  43 extern int qflag;               /* quick (shorter) output */
  44 extern int Rflag;               /* print sequence # field in AH/ESP*/
  45 extern int Sflag;               /* print raw TCP sequence numbers */
  46 extern int tflag;               /* print packet arrival time */
  47 extern int vflag;               /* verbose */
  48 extern int xflag;               /* print packet in hex */
  49
  50 extern char *espsecret;
  51
  52 extern int packettype;          /* as specified by -T */
  53 #define PT_VAT          1       /* Visual Audio Tool */
  54 #define PT_WB           2       /* distributed White Board */
  55 #define PT_RPC          3       /* Remote Procedure Call */
  56 #define PT_RTP          4       /* Real-Time Applications protocol */
  57 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  58 #define PT_SNMP         6       /* Simple Network Management Protocol */
  59
  60 #ifndef min
  61 #define min(a,b) ((a)>(b)?(b):(a))
  62 #endif
  63 #ifndef max
  64 #define max(a,b) ((b)>(a)?(b):(a))
  65 #endif
  66
  67 #ifndef INET6
  68 /*
  69  * The default snapshot length.  This value allows most printers to print
  70  * useful information while keeping the amount of unwanted data down.
  71  * In particular, it allows for an ethernet header, tcp/ip header, and
  72  * 14 bytes of data (assuming no ip options).
  73  */
  74 #define DEFAULT_SNAPLEN 68
  75 #else
  76 #define DEFAULT_SNAPLEN 96
  77 #endif
  78
  79 #ifndef BIG_ENDIAN
  80 #define BIG_ENDIAN 4321
  81 #define LITTLE_ENDIAN 1234
  82 #endif
  83
  84 #ifdef ETHER_HEADER_HAS_EA
  85 #define ESRC(ep) ((ep)->ether_shost.ether_addr_octet)
  86 #define EDST(ep) ((ep)->ether_dhost.ether_addr_octet)
  87 #else
  88 #define ESRC(ep) ((ep)->ether_shost)
  89 #define EDST(ep) ((ep)->ether_dhost)
  90 #endif
  91
  92 #ifdef ETHER_ARP_HAS_X
  93 #define SHA(ap) ((ap)->arp_xsha)
  94 #define THA(ap) ((ap)->arp_xtha)
  95 #define SPA(ap) ((ap)->arp_xspa)
  96 #define TPA(ap) ((ap)->arp_xtpa)
  97 #else
  98 #ifdef ETHER_ARP_HAS_EA
  99 #define SHA(ap) ((ap)->arp_sha.ether_addr_octet)
 100 #define THA(ap) ((ap)->arp_tha.ether_addr_octet)
 101 #else
 102 #define SHA(ap) ((ap)->arp_sha)
 103 #define THA(ap) ((ap)->arp_tha)
 104 #endif
 105 #define SPA(ap) ((ap)->arp_spa)
 106 #define TPA(ap) ((ap)->arp_tpa)
 107 #endif
 108
 109 #ifndef NTOHL
 110 #define NTOHL(x)        (x) = ntohl(x)
 111 #define NTOHS(x)        (x) = ntohs(x)
 112 #define HTONL(x)        (x) = htonl(x)
 113 #define HTONS(x)        (x) = htons(x)
 114 #endif
 115 #endif
 116
 117 extern char *program_name;      /* used to generate self-identifying messages */
 118
 119 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 120
 121 extern int snaplen;
 122 /* global pointers to beginning and end of current packet (during printing) */
 123 extern const u_char *packetp;
 124 extern const u_char *snapend;
 125
 126 /* True if  "l" bytes of "var" were captured */
 127 #define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
 128
 129 /* True if "var" was captured */
 130 #define TTEST(var) TTEST2(var, sizeof(var))
 131
 132 /* Bail if "l" bytes of "var" were not captured */
 133 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 134
 135 /* Bail if "var" was not captured */
 136 #define TCHECK(var) TCHECK2(var, sizeof(var))
 137
 138 #ifdef __STDC__
 139 struct timeval;
 140 #endif
 141
 142 extern void ts_print(const struct timeval *);
 143
 144 extern int fn_print(const u_char *, const u_char *);
 145 extern int fn_printn(const u_char *, u_int, const u_char *);
 146 extern const char *tok2str(const struct tok *, const char *, int);
 147 extern char *dnaddr_string(u_short);
 148
 149 extern void wrapup(int);
 150
 151 #if __STDC__
 152 extern __dead void error(const char *, ...)
 153     __attribute__((volatile, format (printf, 1, 2)));
 154 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 155 #endif
 156
 157 extern char *read_infile(char *);
 158 extern char *copy_argv(char **);
 159
 160 extern char *isonsap_string(const u_char *);
 161 extern char *llcsap_string(u_char);
 162 extern char *protoid_string(const u_char *);
 163 extern char *dnname_string(u_short);
 164 extern char *dnnum_string(u_short);
 165
 166 /* The printer routines. */
 167
 168 #ifdef __STDC__
 169 struct pcap_pkthdr;
 170 #endif
 171
 172 extern int ether_encap_print(u_short, const u_char *, u_int, u_int);
 173 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 174         const u_char *);
 175 extern void aarp_print(const u_char *, u_int);
 176 extern void arp_print(const u_char *, u_int, u_int);
 177 extern void atalk_print(const u_char *, u_int);
 178 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 179 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 180 extern void bgp_print(const u_char *, int);
 181 extern void decnet_print(const u_char *, u_int, u_int);
 182 extern void default_print(const u_char *, u_int);
 183 extern void default_print_unaligned(const u_char *, u_int);
 184 extern void dvmrp_print(const u_char *, u_int);
 185 extern void egp_print(const u_char *, u_int, const u_char *);
 186 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 187         const u_char *);
 188 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 189 extern void gre_print(const u_char *, u_int);
 190 extern void icmp_print(const u_char *, u_int, const u_char *);
 191 extern void igrp_print(const u_char *, u_int, const u_char *);
 192 extern void ip_print(const u_char *, u_int);
 193 extern void ipx_print(const u_char *, u_int);
 194 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 195         const u_char *);
 196 extern void krb_print(const u_char *, u_int);
 197 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 198 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 199 extern void ns_print(const u_char *, u_int);
 200 extern void ntp_print(const u_char *, u_int);
 201 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 202 extern void ospf_print(const u_char *, u_int, const u_char *);
 203 extern void igmp_pim_print(const u_char *, u_int);
 204 extern void mobile_print(const u_char *, u_int);
 205 extern void pim_print(const u_char *, u_int);
 206 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 207 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 208         const u_char *);
 209 extern int vjc_print(register const char *, register u_int, u_short);
 210 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 211 extern void rip_print(const u_char *, u_int);
 212 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 213 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 214 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 215 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 216     const u_char *);
 217 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 218     const u_char *);
 219 extern void snmp_print(const u_char *, u_int);
 220 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 221 extern void tcp_print(const u_char *, u_int, const u_char *);
 222 extern void tftp_print(const u_char *, u_int);
 223 extern void udp_print(const u_char *, u_int, const u_char *);
 224 extern void wb_print(const void *, u_int);
 225 extern int ah_print(register const u_char *, register const u_char *);
 226 extern int esp_print(register const u_char *, register const u_char *, int *);
 227 extern void isakmp_print(const u_char *, u_int, const u_char *);
 228 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 229 extern void rx_print(register const u_char *, int, int, int, u_char *);
 230 #ifdef INET6
 231 extern void ip6_print(const u_char *, int);
 232 extern void ip6_opt_print(const u_char *, int);
 233 extern int hbhopt_print(const u_char *);
 234 extern int dstopt_print(const u_char *);
 235 extern int frag6_print(const u_char *, const u_char *);
 236 extern void icmp6_print(const u_char *, const u_char *);
 237 extern void ripng_print(const u_char *, int);
 238 extern int rt6_print(const u_char *, const u_char *);
 239 extern void ospf6_print(const u_char *, u_int);
 240 extern void dhcp6_print(const u_char *, u_int, u_short, u_short);
 241 #endif /*INET6*/
 242 extern u_short in_cksum(const u_short *addr, register int len, u_short csum);