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 1.235 2004-10-19 15:59:40 hannes 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 #ifndef HAVE_STRSEP
  61 extern char *strsep(char **, const char *);
  62 #endif
  63
  64 #define PT_VAT          1       /* Visual Audio Tool */
  65 #define PT_WB           2       /* distributed White Board */
  66 #define PT_RPC          3       /* Remote Procedure Call */
  67 #define PT_RTP          4       /* Real-Time Applications protocol */
  68 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  69 #define PT_SNMP         6       /* Simple Network Management Protocol */
  70 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  71 #define PT_TFTP         8       /* trivial file transfer protocol */
  72 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
  73
  74 #ifndef min
  75 #define min(a,b) ((a)>(b)?(b):(a))
  76 #endif
  77 #ifndef max
  78 #define max(a,b) ((b)>(a)?(b):(a))
  79 #endif
  80
  81 /*
  82  * The default snapshot length.  This value allows most printers to print
  83  * useful information while keeping the amount of unwanted data down.
  84  */
  85 #ifndef INET6
  86 #define DEFAULT_SNAPLEN 68      /* ether + IPv4 + TCP + 14 */
  87 #else
  88 #define DEFAULT_SNAPLEN 96      /* ether + IPv6 + TCP + 22 */
  89 #endif
  90
  91 #ifndef BIG_ENDIAN
  92 #define BIG_ENDIAN 4321
  93 #define LITTLE_ENDIAN 1234
  94 #endif
  95
  96 #define ESRC(ep) ((ep)->ether_shost)
  97 #define EDST(ep) ((ep)->ether_dhost)
  98
  99 #ifndef NTOHL
 100 #define NTOHL(x)        (x) = ntohl(x)
 101 #define NTOHS(x)        (x) = ntohs(x)
 102 #define HTONL(x)        (x) = htonl(x)
 103 #define HTONS(x)        (x) = htons(x)
 104 #endif
 105 #endif
 106
 107 extern char *program_name;      /* used to generate self-identifying messages */
 108
 109 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 110
 111 /*
 112  * True if  "l" bytes of "var" were captured.
 113  *
 114  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 115  * that "snapend - (l)" underflows.
 116  *
 117  * The check is for <= rather than < because "l" might be 0.
 118  */
 119 #define TTEST2(var, l) (snapend - (l) <= snapend && \
 120                         (const u_char *)&(var) <= snapend - (l))
 121
 122 /* True if "var" was captured */
 123 #define TTEST(var) TTEST2(var, sizeof(var))
 124
 125 /* Bail if "l" bytes of "var" were not captured */
 126 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 127
 128 /* Bail if "var" was not captured */
 129 #define TCHECK(var) TCHECK2(var, sizeof(var))
 130
 131 extern void ts_print(const struct timeval *);
 132 extern void relts_print(int);
 133
 134 extern int fn_print(const u_char *, const u_char *);
 135 extern int fn_printn(const u_char *, u_int, const u_char *);
 136 extern int mask2plen(u_int32_t);
 137 extern const char *tok2strary_internal(const char **, int, const char *, int);
 138 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 139
 140 extern const char *dnaddr_string(u_short);
 141
 142 extern void error(const char *, ...)
 143     __attribute__((noreturn, format (printf, 1, 2)));
 144 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 145
 146 extern char *read_infile(char *);
 147 extern char *copy_argv(char **);
 148
 149 extern void safeputchar(int);
 150 extern void safeputs(const char *);
 151
 152 extern const char *isonsap_string(const u_char *);
 153 extern const char *llcsap_string(u_char);
 154 extern const char *protoid_string(const u_char *);
 155 extern const char *ipxsap_string(u_short);
 156 extern const char *dnname_string(u_short);
 157 extern const char *dnnum_string(u_short);
 158
 159 /* The printer routines. */
 160
 161 #include <pcap.h>
 162
 163 extern int print_unknown_data(const u_char *, const char *,int);
 164 extern void ascii_print_with_offset(const char *, const u_char *, u_int, u_int);
 165 extern void ascii_print(const char *, const u_char *, u_int);
 166 extern void hex_print_with_offset(const char *, const u_char *, u_int, u_int);
 167 extern void telnet_print(const u_char *, u_int);
 168 extern void hex_print(const char *, const u_char *, u_int);
 169 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 170 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 171         const u_char *, u_short *);
 172 extern int snap_print(const u_char *, u_int, u_int, u_short *, u_int32_t,
 173         u_short, u_int);
 174 extern void aarp_print(const u_char *, u_int);
 175 extern void aodv_print(const u_char *, u_int, int);
 176 extern void atalk_print(const u_char *, u_int);
 177 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 178 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
 179 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
 180 extern int oam_print(const u_char *, u_int);
 181 extern void bootp_print(const u_char *, u_int);
 182 extern void bgp_print(const u_char *, int);
 183 extern void beep_print(const u_char *, u_int);
 184 extern void cnfp_print(const u_char *, const u_char *);
 185 extern void decnet_print(const u_char *, u_int, u_int);
 186 extern void default_print(const u_char *, u_int);
 187 extern void default_print_unaligned(const u_char *, u_int);
 188 extern void dvmrp_print(const u_char *, u_int);
 189 extern void egp_print(const u_char *);
 190 extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
 191 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
 192 extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
 193 extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
 194 extern void ether_print(const u_char *, u_int, u_int);
 195 extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
 196 extern u_int token_print(const u_char *, u_int, u_int);
 197 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 198 extern void fddi_print(const u_char *, u_int, u_int);
 199 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 200 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 201 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 202 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 203         const u_char *);
 204 extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
 205 extern void gre_print(const u_char *, u_int);
 206 extern void icmp_print(const u_char *, u_int, const u_char *, int);
 207 extern void igmp_print(const u_char *, u_int);
 208 extern void igrp_print(const u_char *, u_int, const u_char *);
 209 extern void ip_print(const u_char *, u_int);
 210 extern void ipN_print(const u_char *, u_int);
 211 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
 212 extern void ipx_print(const u_char *, u_int);
 213 extern void isoclns_print(const u_char *, u_int, u_int);
 214 extern void krb_print(const u_char *);
 215 extern u_int llap_print(const u_char *, u_int);
 216 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 217 extern void msdp_print(const unsigned char *, u_int);
 218 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 219 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 220 extern void ns_print(const u_char *, u_int, int);
 221 extern void ntp_print(const u_char *, u_int);
 222 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
 223 extern void ospf_print(const u_char *, u_int, const u_char *);
 224 extern void pimv1_print(const u_char *, u_int);
 225 extern void cisco_autorp_print(const u_char *, u_int);
 226 extern void rsvp_print(const u_char *, u_int);
 227 extern void ldp_print(const u_char *, u_int);
 228 extern void lmp_print(const u_char *, u_int);
 229 extern void lspping_print(const u_char *, u_int);
 230 extern void eigrp_print(const u_char *, u_int);
 231 extern void mobile_print(const u_char *, u_int);
 232 extern void pim_print(const u_char *, u_int);
 233 extern u_int pppoe_print(const u_char *, u_int);
 234 extern u_int ppp_print(register const u_char *, u_int);
 235 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 236 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 237 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 238 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 239 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 240 extern int vjc_print(register const char *, u_short);
 241 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
 242 extern void rip_print(const u_char *, u_int);
 243 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
 244 extern void lane_print(const u_char *, u_int, u_int);
 245 extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
 246 extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
 247 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 248 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 249 extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
 250 extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
 251 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
 252 extern void snmp_print(const u_char *, u_int);
 253 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 254 extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
 255 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 256 extern void tftp_print(const u_char *, u_int);
 257 extern void timed_print(const u_char *);
 258 extern void udp_print(const u_char *, u_int, const u_char *, int);
 259 extern void wb_print(const void *, u_int);
 260 extern int ah_print(register const u_char *);
 261 extern void isakmp_print(const u_char *, u_int, const u_char *);
 262 extern int ipcomp_print(register const u_char *, int *);
 263 extern void rx_print(register const u_char *, int, int, int, u_char *);
 264 extern void netbeui_print(u_short, const u_char *, int);
 265 extern void ipx_netbios_print(const u_char *, u_int);
 266 extern void nbt_tcp_print(const u_char *, int);
 267 extern void nbt_udp137_print(const u_char *, int);
 268 extern void nbt_udp138_print(const u_char *, int);
 269 extern char *smb_errstr(int, int);
 270 extern void print_data(const unsigned char *, int);
 271 extern void l2tp_print(const u_char *, u_int);
 272 extern void vrrp_print(const u_char *, u_int, int);
 273 extern void cdp_print(const u_char *, u_int, u_int);
 274 extern void stp_print(const u_char *, u_int);
 275 extern void radius_print(const u_char *, u_int);
 276 extern void lwres_print(const u_char *, u_int);
 277 extern void pptp_print(const u_char *);
 278 extern void sctp_print(const u_char *, const u_char *, u_int);
 279 extern void mpls_print(const u_char *, u_int);
 280 extern void mpls_lsp_ping_print(const u_char *, u_int);
 281 extern void zephyr_print(const u_char *, int);
 282 extern void hsrp_print(const u_char *, u_int);
 283 extern void bfd_print(const u_char *, u_int, u_int);
 284 extern void sip_print(const u_char *, u_int);
 285
 286 #ifdef INET6
 287 extern void ip6_print(const u_char *, u_int);
 288 extern void ip6_opt_print(const u_char *, int);
 289 extern int hbhopt_print(const u_char *);
 290 extern int dstopt_print(const u_char *);
 291 extern int frag6_print(const u_char *, const u_char *);
 292 extern int mobility_print(const u_char *, const u_char *);
 293 extern void icmp6_print(const u_char *, u_int, const u_char *, int);
 294 extern void ripng_print(const u_char *, unsigned int);
 295 extern int rt6_print(const u_char *, const u_char *);
 296 extern void ospf6_print(const u_char *, u_int);
 297 extern void dhcp6_print(const u_char *, u_int);
 298 #endif /*INET6*/
 299 extern u_short in_cksum(const u_short *, register u_int, int);
 300 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 301
 302 #ifndef HAVE_BPF_DUMP
 303 struct bpf_program;
 304
 305 extern void bpf_dump(struct bpf_program *, int);
 306
 307 #endif
 308
 309 #include "netdissect.h"
 310
 311 /* forward compatibility */
 312
 313 netdissect_options *gndo;
 314
 315 #define dflag gndo->ndo_dflag
 316 #define eflag gndo->ndo_eflag
 317 #define fflag gndo->ndo_fflag
 318 #define nflag gndo->ndo_nflag
 319 #define Nflag gndo->ndo_Nflag
 320 #define Oflag gndo->ndo_Oflag
 321 #define pflag gndo->ndo_pflag
 322 #define qflag gndo->ndo_qflag
 323 #define Rflag gndo->ndo_Rflag
 324 #define sflag gndo->ndo_sflag
 325 #define Sflag gndo->ndo_Sflag
 326 #define tflag gndo->ndo_tflag
 327 #define Uflag gndo->ndo_Uflag
 328 #define uflag gndo->ndo_uflag
 329 #define vflag gndo->ndo_vflag
 330 #define xflag gndo->ndo_xflag
 331 #define Xflag gndo->ndo_Xflag
 332 #define Cflag gndo->ndo_Cflag
 333 #define Aflag gndo->ndo_Aflag
 334 #define packettype gndo->ndo_packettype
 335 #define tcpmd5secret gndo->ndo_tcpmd5secret
 336 #define Wflag gndo->ndo_Wflag
 337 #define WflagChars gndo->ndo_WflagChars
 338 #define Cflag_count gndo->ndo_Cflag_count
 339 #define snaplen     gndo->ndo_snaplen
 340 #define snapend     gndo->ndo_snapend
 341