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 1.125 2000-05-15 00:37:06 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 #ifndef HAVE___ATTRIBUTE__
  35 #define __attribute__(x)
  36 #endif
  37
  38 /* snprintf et al */
  39
  40 #include <stdarg.h>
  41
  42 #if !defined(HAVE_SNPRINTF)
  43 int snprintf (char *str, size_t sz, const char *format, ...)
  44      __attribute__ ((format (printf, 3, 4)));
  45 #endif
  46
  47 #if !defined(HAVE_VSNPRINTF)
  48 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
  49      __attribute__((format (printf, 3, 0)));
  50 #endif
  51
  52 #if !defined(HAVE_ASPRINTF)
  53 int asprintf (char **ret, const char *format, ...)
  54      __attribute__ ((format (printf, 2, 3)));
  55 #endif
  56
  57 #if !defined(HAVE_VASPRINTF)
  58 int vasprintf (char **ret, const char *format, va_list ap)
  59      __attribute__((format (printf, 2, 0)));
  60 #endif
  61
  62 #if !defined(HAVE_ASNPRINTF)
  63 int asnprintf (char **ret, size_t max_sz, const char *format, ...)
  64      __attribute__ ((format (printf, 3, 4)));
  65 #endif
  66
  67 #if !defined(HAVE_VASNPRINTF)
  68 int vasnprintf (char **ret, size_t max_sz, const char *format, va_list ap)
  69      __attribute__((format (printf, 3, 0)));
  70 #endif
  71
  72 #ifndef HAVE_STRLCAT
  73 extern size_t strlcat __P((char *, const char *, size_t));
  74 #endif
  75 #ifndef HAVE_STRLCPY
  76 extern size_t strlcpy __P((char *, const char *, size_t));
  77 #endif
  78
  79 struct tok {
  80         int v;                  /* value */
  81         char *s;                /* string */
  82 };
  83
  84 extern int aflag;               /* translate network and broadcast addresses */
  85 extern int dflag;               /* print filter code */
  86 extern int eflag;               /* print ethernet header */
  87 extern int fflag;               /* don't translate "foreign" IP address */
  88 extern int nflag;               /* leave addresses as numbers */
  89 extern int Nflag;               /* remove domains from printed host names */
  90 extern int qflag;               /* quick (shorter) output */
  91 extern int Rflag;               /* print sequence # field in AH/ESP*/
  92 extern int sflag;               /* use the libsmi to translate OIDs */
  93 extern int Sflag;               /* print raw TCP sequence numbers */
  94 extern int tflag;               /* print packet arrival time */
  95 extern int vflag;               /* verbose */
  96 extern int xflag;               /* print packet in hex */
  97 extern int Xflag;               /* print packet in hex/ascii */
  98
  99 extern char *espsecret;
 100
 101 extern int packettype;          /* as specified by -T */
 102 #define PT_VAT          1       /* Visual Audio Tool */
 103 #define PT_WB           2       /* distributed White Board */
 104 #define PT_RPC          3       /* Remote Procedure Call */
 105 #define PT_RTP          4       /* Real-Time Applications protocol */
 106 #define PT_RTCP         5       /* Real-Time Applications control protocol */
 107 #define PT_SNMP         6       /* Simple Network Management Protocol */
 108 #define PT_CNFP         7       /* Cisco NetFlow protocol */
 109
 110 #ifndef min
 111 #define min(a,b) ((a)>(b)?(b):(a))
 112 #endif
 113 #ifndef max
 114 #define max(a,b) ((b)>(a)?(b):(a))
 115 #endif
 116
 117 #ifndef INET6
 118 /*
 119  * The default snapshot length.  This value allows most printers to print
 120  * useful information while keeping the amount of unwanted data down.
 121  * In particular, it allows for an ethernet header, tcp/ip header, and
 122  * 14 bytes of data (assuming no ip options).
 123  */
 124 #define DEFAULT_SNAPLEN 68
 125 #else
 126 #define DEFAULT_SNAPLEN 96
 127 #endif
 128
 129 #ifndef BIG_ENDIAN
 130 #define BIG_ENDIAN 4321
 131 #define LITTLE_ENDIAN 1234
 132 #endif
 133
 134 #ifdef ETHER_HEADER_HAS_EA
 135 #define ESRC(ep) ((ep)->ether_shost.ether_addr_octet)
 136 #define EDST(ep) ((ep)->ether_dhost.ether_addr_octet)
 137 #else
 138 #define ESRC(ep) ((ep)->ether_shost)
 139 #define EDST(ep) ((ep)->ether_dhost)
 140 #endif
 141
 142 #ifdef ETHER_ARP_HAS_X
 143 #define SHA(ap) ((ap)->arp_xsha)
 144 #define THA(ap) ((ap)->arp_xtha)
 145 #define SPA(ap) ((ap)->arp_xspa)
 146 #define TPA(ap) ((ap)->arp_xtpa)
 147 #else
 148 #ifdef ETHER_ARP_HAS_EA
 149 #define SHA(ap) ((ap)->arp_sha.ether_addr_octet)
 150 #define THA(ap) ((ap)->arp_tha.ether_addr_octet)
 151 #else
 152 #define SHA(ap) ((ap)->arp_sha)
 153 #define THA(ap) ((ap)->arp_tha)
 154 #endif
 155 #define SPA(ap) ((ap)->arp_spa)
 156 #define TPA(ap) ((ap)->arp_tpa)
 157 #endif
 158
 159 #ifndef NTOHL
 160 #define NTOHL(x)        (x) = ntohl(x)
 161 #define NTOHS(x)        (x) = ntohs(x)
 162 #define HTONL(x)        (x) = htonl(x)
 163 #define HTONS(x)        (x) = htons(x)
 164 #endif
 165 #endif
 166
 167 extern char *program_name;      /* used to generate self-identifying messages */
 168
 169 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 170
 171 extern int snaplen;
 172 /* global pointers to beginning and end of current packet (during printing) */
 173 extern const u_char *packetp;
 174 extern const u_char *snapend;
 175
 176 /* True if  "l" bytes of "var" were captured */
 177 #define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
 178
 179 /* True if "var" was captured */
 180 #define TTEST(var) TTEST2(var, sizeof(var))
 181
 182 /* Bail if "l" bytes of "var" were not captured */
 183 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 184
 185 /* Bail if "var" was not captured */
 186 #define TCHECK(var) TCHECK2(var, sizeof(var))
 187
 188 #ifdef __STDC__
 189 struct timeval;
 190 #endif
 191
 192 extern void ts_print(const struct timeval *);
 193 extern void relts_print(int);
 194
 195 extern int fn_print(const u_char *, const u_char *);
 196 extern int fn_printn(const u_char *, u_int, const u_char *);
 197 extern const char *tok2str(const struct tok *, const char *, int);
 198 extern char *dnaddr_string(u_short);
 199
 200 extern void wrapup(int);
 201
 202 #if __STDC__
 203 extern __dead void error(const char *, ...)
 204     __attribute__((volatile, format (printf, 1, 2)));
 205 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 206 #endif
 207
 208 extern char *read_infile(char *);
 209 extern char *copy_argv(char **);
 210
 211 extern char *isonsap_string(const u_char *);
 212 extern char *llcsap_string(u_char);
 213 extern char *protoid_string(const u_char *);
 214 extern char *dnname_string(u_short);
 215 extern char *dnnum_string(u_short);
 216
 217 /* The printer routines. */
 218
 219 #ifdef __STDC__
 220 struct pcap_pkthdr;
 221 #endif
 222
 223 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 224 extern void ascii_print(const u_char *, u_int);
 225 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 226 extern void telnet_print(const u_char *, u_int);
 227 extern void hex_print(const u_char *, u_int);
 228 extern int ether_encap_print(u_short, const u_char *, u_int, u_int);
 229 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 230         const u_char *);
 231 extern void aarp_print(const u_char *, u_int);
 232 extern void arp_print(const u_char *, u_int, u_int);
 233 extern void atalk_print(const u_char *, u_int);
 234 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 235 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 236 extern void bgp_print(const u_char *, int);
 237 extern void cnfp_print(const u_char *cp, u_int len, const u_char *bp);
 238 extern void decnet_print(const u_char *, u_int, u_int);
 239 extern void default_print(const u_char *, u_int);
 240 extern void default_print_unaligned(const u_char *, u_int);
 241 extern void dvmrp_print(const u_char *, u_int);
 242 extern void egp_print(const u_char *, u_int, const u_char *);
 243 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 244         const u_char *);
 245 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 246 extern void gre_print(const u_char *, u_int);
 247 extern void icmp_print(const u_char *, u_int, const u_char *);
 248 extern void igrp_print(const u_char *, u_int, const u_char *);
 249 extern void ip_print(const u_char *, u_int);
 250 extern void ipx_print(const u_char *, u_int);
 251 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 252         const u_char *);
 253 extern void krb_print(const u_char *, u_int);
 254 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 255 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 256 extern void ns_print(const u_char *, u_int);
 257 extern void ntp_print(const u_char *, u_int);
 258 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 259 extern void ospf_print(const u_char *, u_int, const u_char *);
 260 extern void pimv1_print(const u_char *, u_int);
 261 extern void cisco_autorp_print(const u_char *, u_int);
 262 extern void mobile_print(const u_char *, u_int);
 263 extern void pim_print(const u_char *, u_int);
 264 extern void pppoe_print(const u_char *, u_int);
 265 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 266 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 267         const u_char *);
 268 extern int vjc_print(register const char *, register u_int, u_short);
 269 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 270 extern void rip_print(const u_char *, u_int);
 271 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 272 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 273 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 274 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 275     const u_char *);
 276 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 277     const u_char *);
 278 extern void snmp_print(const u_char *, u_int);
 279 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 280 extern void tcp_print(const u_char *, u_int, const u_char *);
 281 extern void tftp_print(const u_char *, u_int);
 282 extern void udp_print(const u_char *, u_int, const u_char *);
 283 extern void wb_print(const void *, u_int);
 284 extern int ah_print(register const u_char *, register const u_char *);
 285 extern int esp_print(register const u_char *, register const u_char *, int *);
 286 extern void isakmp_print(const u_char *, u_int, const u_char *);
 287 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 288 extern void rx_print(register const u_char *, int, int, int, u_char *);
 289 extern void netbeui_print(const u_char *, const u_char *);
 290 extern void ipx_netbios_print(const u_char *, const u_char *);
 291 extern void nbt_tcp_print(const u_char *, int);
 292 extern void nbt_udp137_print(const u_char *data, int);
 293 extern void nbt_udp138_print(const u_char *data, int);
 294 extern char *smb_errstr(int, int);
 295 extern void print_data(const unsigned char *, int);
 296 extern void l2tp_print(const u_char *, u_int);
 297 extern void lcp_print(const u_char *, u_int);
 298 extern void vrrp_print(const u_char *bp, u_int len, int ttl);
 299 extern void cdp_print(const u_char *p, u_int length, u_int caplen,
 300                       const u_char *esrc, const u_char *edst);
 301
 302 #ifdef INET6
 303 extern void ip6_print(const u_char *, int);
 304 extern void ip6_opt_print(const u_char *, int);
 305 extern int hbhopt_print(const u_char *);
 306 extern int dstopt_print(const u_char *);
 307 extern int frag6_print(const u_char *, const u_char *);
 308 extern void icmp6_print(const u_char *, const u_char *);
 309 extern void ripng_print(const u_char *, int);
 310 extern int rt6_print(const u_char *, const u_char *);
 311 extern void ospf6_print(const u_char *, u_int);
 312 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t);
 313 #endif /*INET6*/
 314 extern u_short in_cksum(const u_short *addr, register int len, u_short csum);