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

   1 /*
   2  * Copyright (c) 1988-2002
   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 1.193 2002-08-01 08:52:57 risso 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
  31 #ifndef HAVE___ATTRIBUTE__
  32 #define __attribute__(x)
  33 #endif
  34
  35 /* snprintf et al */
  36
  37 #include <stdarg.h>
  38
  39 #if !defined(HAVE_SNPRINTF)
  40 int snprintf(char *, size_t, const char *, ...)
  41      __attribute__((format(printf, 3, 4)));
  42 #endif
  43
  44 #if !defined(HAVE_VSNPRINTF)
  45 int vsnprintf(char *, size_t, const char *, va_list)
  46      __attribute__((format(printf, 3, 0)));
  47 #endif
  48
  49 #ifndef HAVE_STRLCAT
  50 extern size_t strlcat(char *, const char *, size_t);
  51 #endif
  52 #ifndef HAVE_STRLCPY
  53 extern size_t strlcpy(char *, const char *, size_t);
  54 #endif
  55
  56 #ifndef HAVE_STRDUP
  57 extern char *strdup(const char *);
  58 #endif
  59
  60 struct tok {
  61         int v;                  /* value */
  62         const char *s;          /* string */
  63 };
  64
  65 extern int aflag;               /* translate network and broadcast addresses */
  66 extern int dflag;               /* print filter code */
  67 extern int eflag;               /* print ethernet header */
  68 extern int fflag;               /* don't translate "foreign" IP address */
  69 extern int nflag;               /* leave addresses as numbers */
  70 extern int Nflag;               /* remove domains from printed host names */
  71 extern int qflag;               /* quick (shorter) output */
  72 extern int Rflag;               /* print sequence # field in AH/ESP*/
  73 extern int sflag;               /* use the libsmi to translate OIDs */
  74 extern int Sflag;               /* print raw TCP sequence numbers */
  75 extern int tflag;               /* print packet arrival time */
  76 extern int uflag;               /* Print undecoded NFS handles */
  77 extern int vflag;               /* verbose */
  78 extern int xflag;               /* print packet in hex */
  79 extern int Xflag;               /* print packet in hex/ascii */
  80 extern int Aflag;               /* print packet only in ascii observing TAB, LF, CR and SPACE as graphical chars */
  81 extern char *espsecret;
  82
  83 extern int packettype;          /* as specified by -T */
  84 #define PT_VAT          1       /* Visual Audio Tool */
  85 #define PT_WB           2       /* distributed White Board */
  86 #define PT_RPC          3       /* Remote Procedure Call */
  87 #define PT_RTP          4       /* Real-Time Applications protocol */
  88 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  89 #define PT_SNMP         6       /* Simple Network Management Protocol */
  90 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  91
  92 #ifndef min
  93 #define min(a,b) ((a)>(b)?(b):(a))
  94 #endif
  95 #ifndef max
  96 #define max(a,b) ((b)>(a)?(b):(a))
  97 #endif
  98
  99 /*
 100  * The default snapshot length.  This value allows most printers to print
 101  * useful information while keeping the amount of unwanted data down.
 102  */
 103 #ifndef INET6
 104 #define DEFAULT_SNAPLEN 68      /* ether + IPv4 + TCP + 14 */
 105 #else
 106 #define DEFAULT_SNAPLEN 96      /* ether + IPv6 + TCP + 22 */
 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 /*
 135  * True if  "l" bytes of "var" were captured.
 136  *
 137  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 138  * that "snapend - (l)" underflows.
 139  *
 140  * The check is for <= rather than < because "l" might be 0.
 141  */
 142 #define TTEST2(var, l) (snapend - (l) <= snapend && \
 143                         (const u_char *)&(var) <= snapend - (l))
 144
 145 /* True if "var" was captured */
 146 #define TTEST(var) TTEST2(var, sizeof(var))
 147
 148 /* Bail if "l" bytes of "var" were not captured */
 149 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 150
 151 /* Bail if "var" was not captured */
 152 #define TCHECK(var) TCHECK2(var, sizeof(var))
 153
 154 extern void ts_print(const struct timeval *);
 155 extern void relts_print(int);
 156
 157 extern int fn_print(const u_char *, const u_char *);
 158 extern int fn_printn(const u_char *, u_int, const u_char *);
 159 extern const char *tok2str(const struct tok *, const char *, int);
 160 extern const char *tok2strary_internal(const char **, int, const char *, int);
 161 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 162
 163 extern const char *dnaddr_string(u_short);
 164
 165 extern void info(int);
 166 extern int infodelay;
 167 extern int infoprint;
 168
 169 extern void error(const char *, ...)
 170     __attribute__((noreturn, format (printf, 1, 2)));
 171 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 172
 173 extern char *read_infile(char *);
 174 extern char *copy_argv(char **);
 175
 176 extern void safeputchar(int);
 177 extern void safeputs(const char *);
 178
 179 extern const char *isonsap_string(const u_char *);
 180 extern const char *llcsap_string(u_char);
 181 extern const char *protoid_string(const u_char *);
 182 extern const char *ipxsap_string(u_short);
 183 extern const char *dnname_string(u_short);
 184 extern const char *dnnum_string(u_short);
 185
 186 /* The printer routines. */
 187
 188 #include <pcap.h>
 189
 190 extern int print_unknown_data(const u_char *,const char *,int);
 191 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 192 extern void ascii_print(const u_char *, u_int);
 193 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 194 extern void telnet_print(const u_char *, u_int);
 195 extern void hex_print(const u_char *, u_int);
 196 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 197 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 198         const u_char *, u_short *);
 199 extern int snap_print(const u_char *, u_int, u_int, const u_char *,
 200         const u_char *, u_short *, u_int32_t, u_short, u_int);
 201 extern void aarp_print(const u_char *, u_int);
 202 extern void arp_print(const u_char *, u_int, u_int);
 203 extern void atalk_print(const u_char *, u_int);
 204 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 205 extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 206 extern void bpfatm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 207 extern void sunatm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 208 extern void bootp_print(const u_char *, u_int, u_short, u_short);
 209 extern void bgp_print(const u_char *, int);
 210 extern void beep_print(const u_char *, u_int);
 211 extern void cnfp_print(const u_char *, u_int, const u_char *);
 212 extern void decnet_print(const u_char *, u_int, u_int);
 213 extern void default_print(const u_char *, u_int);
 214 extern void default_print_unaligned(const u_char *, u_int);
 215 extern void dvmrp_print(const u_char *, u_int);
 216 extern void egp_print(const u_char *, u_int, const u_char *);
 217 extern void pflog_if_print(u_char *, const struct pcap_pkthdr *,
 218         const u_char *);
 219 extern void arcnet_if_print(u_char *, const struct pcap_pkthdr *,
 220         const u_char *);
 221 extern void ether_print(const u_char *, u_int, u_int);
 222 extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
 223         const u_char *);
 224 extern u_int token_print(const u_char *, u_int, u_int);
 225 extern void token_if_print(u_char *, const struct pcap_pkthdr *,
 226         const u_char *);
 227 extern void fddi_print(const u_char *, u_int, u_int);
 228 extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 229 extern void fr_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 230 extern void ieee802_11_if_print(u_char *, const struct pcap_pkthdr *,
 231         const u_char *);
 232 extern void gre_print(const u_char *, u_int);
 233 extern void icmp_print(const u_char *, u_int, const u_char *);
 234 extern void igmp_print(const u_char *, u_int);
 235 extern void igrp_print(const u_char *, u_int, const u_char *);
 236 extern void ip_print(const u_char *, u_int);
 237 extern void ipN_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 llap_print(const u_char *, u_int);
 243 extern void ltalk_if_print(u_char *, const struct pcap_pkthdr *,
 244         const u_char *);
 245 extern void msdp_print(const unsigned char *, u_int);
 246 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 247 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 248 extern void ns_print(const u_char *, u_int);
 249 extern void ntp_print(const u_char *, u_int);
 250 extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 251 extern void ospf_print(const u_char *, u_int, const u_char *);
 252 extern void pimv1_print(const u_char *, u_int);
 253 extern void cisco_autorp_print(const u_char *, u_int);
 254 extern void mobile_print(const u_char *, u_int);
 255 extern void pim_print(const u_char *, u_int);
 256 extern u_int pppoe_print(const u_char *, u_int);
 257 extern u_int ppp_print(register const u_char *, u_int);
 258 extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 259 extern void ppp_hdlc_if_print(u_char *, const struct pcap_pkthdr *,
 260         const u_char *);
 261 extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 262         const u_char *);
 263 extern void pppoe_if_print(u_char *, const struct pcap_pkthdr *,
 264         const u_char *);
 265 extern int vjc_print(register const char *, register u_int, u_short);
 266 extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 267 extern void rip_print(const u_char *, u_int);
 268 extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
 269 extern void lane_print(const u_char *, u_int, u_int);
 270 extern void lane_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 271 extern void cip_if_print(u_char *, const struct pcap_pkthdr *,const u_char *);
 272 extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
 273     const u_char *);
 274 extern void chdlc_if_print(u_char *, const struct pcap_pkthdr *,
 275     const u_char *);
 276 extern void chdlc_print(register const u_char *, u_int, u_int);
 277 extern void sll_if_print(u_char *, const struct pcap_pkthdr *, 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 *, int);
 281 extern void tftp_print(const u_char *, u_int);
 282 extern void timed_print(const u_char *, u_int);
 283 extern void udp_print(const u_char *, u_int, const u_char *, int);
 284 extern void wb_print(const void *, u_int);
 285 extern int ah_print(register const u_char *, register const u_char *);
 286 extern int esp_print(register const u_char *, register const u_char *, int *, int *);
 287 extern void isakmp_print(const u_char *, u_int, const u_char *);
 288 extern int ipcomp_print(register const u_char *, register const u_char *, int *);
 289 extern void rx_print(register const u_char *, int, int, int, u_char *);
 290 extern void netbeui_print(u_short, const u_char *, int);
 291 extern void ipx_netbios_print(const u_char *, u_int);
 292 extern void nbt_tcp_print(const u_char *, int);
 293 extern void nbt_udp137_print(const u_char *, int);
 294 extern void nbt_udp138_print(const u_char *, int);
 295 extern char *smb_errstr(int, int);
 296 extern void print_data(const unsigned char *, int);
 297 extern void l2tp_print(const u_char *, u_int);
 298 extern void lcp_print(const u_char *, u_int);
 299 extern void vrrp_print(const u_char *, u_int, int);
 300 extern void cdp_print(const u_char *, u_int, u_int, const u_char *,
 301         const u_char *);
 302 extern void stp_print(const u_char *, u_int);
 303 extern void radius_print(const u_char *, u_int);
 304 extern void lwres_print(const u_char *, u_int);
 305 extern void pptp_print(const u_char *, u_int);
 306 extern void sctp_print(const u_char *, const u_char *, u_int);
 307 extern void mpls_print(const u_char *, u_int);
 308 extern void zephyr_print(const u_char *, int);
 309 extern void hsrp_print(const u_char *, u_int);
 310
 311 #ifdef INET6
 312 extern void ip6_print(const u_char *, u_int);
 313 extern void ip6_opt_print(const u_char *, int);
 314 extern int hbhopt_print(const u_char *);
 315 extern int dstopt_print(const u_char *);
 316 extern int frag6_print(const u_char *, const u_char *);
 317 extern int mobility_print(const u_char *, const u_char *);
 318 extern void icmp6_print(const u_char *, const u_char *);
 319 extern void ripng_print(const u_char *, unsigned int);
 320 extern int rt6_print(const u_char *, const u_char *);
 321 extern void ospf6_print(const u_char *, u_int);
 322 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t);
 323 #endif /*INET6*/
 324 extern u_short in_cksum(const u_short *, register u_int, int);
 325 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 326
 327 #ifndef HAVE_BPF_DUMP
 328 struct bpf_program;
 329
 330 extern void bpf_dump(struct bpf_program *, int);
 331 #endif
 332
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