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 1.153 2001-01-28 08:12:25 itojun 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 #ifndef HAVE_STRDUP
  59 extern char *strdup (const char *str);
  60 #endif
  61
  62 struct tok {
  63         int v;                  /* value */
  64         char *s;                /* string */
  65 };
  66
  67 extern int aflag;               /* translate network and broadcast addresses */
  68 extern int dflag;               /* print filter code */
  69 extern int eflag;               /* print ethernet header */
  70 extern int fflag;               /* don't translate "foreign" IP address */
  71 extern int nflag;               /* leave addresses as numbers */
  72 extern int Nflag;               /* remove domains from printed host names */
  73 extern int qflag;               /* quick (shorter) output */
  74 extern int Rflag;               /* print sequence # field in AH/ESP*/
  75 extern int sflag;               /* use the libsmi to translate OIDs */
  76 extern int Sflag;               /* print raw TCP sequence numbers */
  77 extern int tflag;               /* print packet arrival time */
  78 extern int uflag;               /* Print undecoded NFS handles */
  79 extern int vflag;               /* verbose */
  80 extern int xflag;               /* print packet in hex */
  81 extern int Xflag;               /* print packet in hex/ascii */
  82
  83 extern char *espsecret;
  84
  85 extern int packettype;          /* as specified by -T */
  86 #define PT_VAT          1       /* Visual Audio Tool */
  87 #define PT_WB           2       /* distributed White Board */
  88 #define PT_RPC          3       /* Remote Procedure Call */
  89 #define PT_RTP          4       /* Real-Time Applications protocol */
  90 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  91 #define PT_SNMP         6       /* Simple Network Management Protocol */
  92 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  93
  94 #ifndef min
  95 #define min(a,b) ((a)>(b)?(b):(a))
  96 #endif
  97 #ifndef max
  98 #define max(a,b) ((b)>(a)?(b):(a))
  99 #endif
 100
 101 #ifndef INET6
 102 /*
 103  * The default snapshot length.  This value allows most printers to print
 104  * useful information while keeping the amount of unwanted data down.
 105  * In particular, it allows for an ethernet header, tcp/ip header, and
 106  * 14 bytes of data (assuming no ip options).
 107  */
 108 #define DEFAULT_SNAPLEN 68
 109 #else
 110 #define DEFAULT_SNAPLEN 96
 111 #endif
 112
 113 #ifndef BIG_ENDIAN
 114 #define BIG_ENDIAN 4321
 115 #define LITTLE_ENDIAN 1234
 116 #endif
 117
 118 #define ESRC(ep) ((ep)->ether_shost)
 119 #define EDST(ep) ((ep)->ether_dhost)
 120
 121 #ifndef NTOHL
 122 #define NTOHL(x)        (x) = ntohl(x)
 123 #define NTOHS(x)        (x) = ntohs(x)
 124 #define HTONL(x)        (x) = htonl(x)
 125 #define HTONS(x)        (x) = htons(x)
 126 #endif
 127 #endif
 128
 129 extern char *program_name;      /* used to generate self-identifying messages */
 130
 131 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 132
 133 extern int snaplen;
 134 /* global pointers to beginning and end of current packet (during printing) */
 135 extern const u_char *packetp;
 136 extern const u_char *snapend;
 137
 138 /* True if  "l" bytes of "var" were captured */
 139 #define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
 140
 141 /* True if "var" was captured */
 142 #define TTEST(var) TTEST2(var, sizeof(var))
 143
 144 /* Bail if "l" bytes of "var" were not captured */
 145 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 146
 147 /* Bail if "var" was not captured */
 148 #define TCHECK(var) TCHECK2(var, sizeof(var))
 149
 150 struct timeval;
 151
 152 extern void ts_print(const struct timeval *);
 153 extern void relts_print(int);
 154
 155 extern int fn_print(const u_char *, const u_char *);
 156 extern int fn_printn(const u_char *, u_int, const u_char *);
 157 extern const char *tok2str(const struct tok *, const char *, int);
 158 extern char *dnaddr_string(u_short);
 159
 160 extern void wrapup(int);
 161
 162 extern void error(const char *, ...)
 163     __attribute__((noreturn, format (printf, 1, 2)));
 164 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 165
 166 extern char *read_infile(char *);
 167 extern char *copy_argv(char **);
 168
 169 extern void safeputchar(int);
 170 extern void safeputs(const char *);
 171
 172 extern char *isonsap_string(const u_char *);
 173 extern char *llcsap_string(u_char);
 174 extern char *protoid_string(const u_char *);
 175 extern char *dnname_string(u_short);
 176 extern char *dnnum_string(u_short);
 177
 178 /* The printer routines. */
 179
 180 struct pcap_pkthdr;
 181
 182 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 183 extern void ascii_print(const u_char *, u_int);
 184 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 185 extern void telnet_print(const u_char *, u_int);
 186 extern void hex_print(const u_char *, u_int);
 187 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 188 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 189         const u_char *, u_short *);
 190 extern void aarp_print(const u_char *, u_int);
 191 extern void arp_print(const u_char *, u_int, u_int);
 192 extern void atalk_print(const u_char *, u_int);
 193 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 194 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 195 extern void bgp_print(const u_char *, int);
 196 extern void bxxp_print(const u_char *, u_int);
 197 extern void cnfp_print(const u_char *cp, u_int len, const u_char *bp);
 198 extern void decnet_print(const u_char *, u_int, u_int);
 199 extern void default_print(const u_char *, u_int);
 200 extern void default_print_unaligned(const u_char *, u_int);
 201 extern void dvmrp_print(const u_char *, u_int);
 202 extern void egp_print(const u_char *, u_int, const u_char *);
 203 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 204         const u_char *);
 205 extern void token_if_print(u_char *, const struct pcap_pkthdr *,
 206         const u_char *);
 207 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 208 extern void gre_print(const u_char *, u_int);
 209 extern void icmp_print(const u_char *, u_int, const u_char *);
 210 extern void igmp_print(const u_char *, u_int, const u_char *);
 211 extern void igrp_print(const u_char *, u_int, const u_char *);
 212 extern void ip_print(const u_char *, u_int);
 213 extern void ipN_print(const u_char *, u_int);
 214 extern void ipx_print(const u_char *, u_int);
 215 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 216         const u_char *);
 217 extern void krb_print(const u_char *, u_int);
 218 extern void llap_print(const u_char *, u_int);
 219 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 220 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 221 extern void ns_print(const u_char *, u_int);
 222 extern void ntp_print(const u_char *, u_int);
 223 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 224 extern void ospf_print(const u_char *, u_int, const u_char *);
 225 extern void pimv1_print(const u_char *, u_int);
 226 extern void cisco_autorp_print(const u_char *, u_int);
 227 extern void mobile_print(const u_char *, u_int);
 228 extern void pim_print(const u_char *, u_int);
 229 extern void pppoe_print(const u_char *, u_int);
 230 extern void ppp_print(register const u_char *, u_int);
 231 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 232 extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *,
 233         const u_char *);
 234 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 235         const u_char *);
 236 extern int vjc_print(register const char *, register u_int, u_short);
 237 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 238 extern void rip_print(const u_char *, u_int);
 239 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 240 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 241 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 242 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 243     const u_char *);
 244 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 245     const u_char *);
 246 extern void sll_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 247 extern void snmp_print(const u_char *, u_int);
 248 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 249 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 250 extern void tftp_print(const u_char *, u_int);
 251 extern void timed_print(const u_char *, u_int);
 252 extern void udp_print(const u_char *, u_int, const u_char *, int);
 253 extern void wb_print(const void *, u_int);
 254 extern int ah_print(register const u_char *, register const u_char *);
 255 extern int esp_print(register const u_char *, register const u_char *, int *);
 256 extern void isakmp_print(const u_char *, u_int, const u_char *);
 257 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 258 extern void rx_print(register const u_char *, int, int, int, u_char *);
 259 extern void netbeui_print(u_short, const u_char *, int);
 260 extern void ipx_netbios_print(const u_char *, u_int);
 261 extern void nbt_tcp_print(const u_char *, int);
 262 extern void nbt_udp137_print(const u_char *data, int);
 263 extern void nbt_udp138_print(const u_char *data, int);
 264 extern char *smb_errstr(int, int);
 265 extern void print_data(const unsigned char *, int);
 266 extern void l2tp_print(const u_char *, u_int);
 267 extern void lcp_print(const u_char *, u_int);
 268 extern void vrrp_print(const u_char *bp, u_int len, int ttl);
 269 extern void cdp_print(const u_char *, u_int, u_int, const u_char *,
 270         const u_char *);
 271 extern void stp_print(const u_char *p, u_int length);
 272 extern void radius_print(const u_char *, u_int);
 273
 274 #ifdef INET6
 275 extern void ip6_print(const u_char *, int);
 276 extern void ip6_opt_print(const u_char *, int);
 277 extern int hbhopt_print(const u_char *);
 278 extern int dstopt_print(const u_char *);
 279 extern int frag6_print(const u_char *, const u_char *);
 280 extern void icmp6_print(const u_char *, const u_char *);
 281 extern void ripng_print(const u_char *, int);
 282 extern int rt6_print(const u_char *, const u_char *);
 283 extern void ospf6_print(const u_char *, u_int);
 284 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t);
 285 #endif /*INET6*/
 286 extern u_short in_cksum(const u_short *, register int, u_short);