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 1.225 2004-03-23 07:15:36 guy 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 struct tok {
  65         int v;                  /* value */
  66         const char *s;          /* string */
  67 };
  68
  69 extern int aflag;               /* translate network and broadcast addresses */
  70 extern int dflag;               /* print filter code */
  71 extern int eflag;               /* print ethernet header */
  72 extern int fflag;               /* don't translate "foreign" IP address */
  73 extern int nflag;               /* leave addresses as numbers */
  74 extern int Nflag;               /* remove domains from printed host names */
  75 extern int qflag;               /* quick (shorter) output */
  76 extern int Rflag;               /* print sequence # field in AH/ESP*/
  77 extern int sflag;               /* use the libsmi to translate OIDs */
  78 extern int Sflag;               /* print raw TCP sequence numbers */
  79 extern int tflag;               /* print packet arrival time */
  80 extern int uflag;               /* Print undecoded NFS handles */
  81 extern int vflag;               /* verbose */
  82 extern int xflag;               /* print packet in hex */
  83 extern int Xflag;               /* print packet in hex/ascii */
  84 extern int Aflag;               /* print packet only in ascii observing TAB, LF, CR and SPACE as graphical chars */
  85 extern char *espsecret;
  86 extern char *tcpmd5secret;
  87
  88 extern int packettype;          /* as specified by -T */
  89 #define PT_VAT          1       /* Visual Audio Tool */
  90 #define PT_WB           2       /* distributed White Board */
  91 #define PT_RPC          3       /* Remote Procedure Call */
  92 #define PT_RTP          4       /* Real-Time Applications protocol */
  93 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  94 #define PT_SNMP         6       /* Simple Network Management Protocol */
  95 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  96 #define PT_TFTP         8       /* trivial file transfer protocol */
  97 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
  98
  99 #ifndef min
 100 #define min(a,b) ((a)>(b)?(b):(a))
 101 #endif
 102 #ifndef max
 103 #define max(a,b) ((b)>(a)?(b):(a))
 104 #endif
 105
 106 /*
 107  * The default snapshot length.  This value allows most printers to print
 108  * useful information while keeping the amount of unwanted data down.
 109  */
 110 #ifndef INET6
 111 #define DEFAULT_SNAPLEN 68      /* ether + IPv4 + TCP + 14 */
 112 #else
 113 #define DEFAULT_SNAPLEN 96      /* ether + IPv6 + TCP + 22 */
 114 #endif
 115
 116 #ifndef BIG_ENDIAN
 117 #define BIG_ENDIAN 4321
 118 #define LITTLE_ENDIAN 1234
 119 #endif
 120
 121 #define ESRC(ep) ((ep)->ether_shost)
 122 #define EDST(ep) ((ep)->ether_dhost)
 123
 124 #ifndef NTOHL
 125 #define NTOHL(x)        (x) = ntohl(x)
 126 #define NTOHS(x)        (x) = ntohs(x)
 127 #define HTONL(x)        (x) = htonl(x)
 128 #define HTONS(x)        (x) = htons(x)
 129 #endif
 130 #endif
 131
 132 extern char *program_name;      /* used to generate self-identifying messages */
 133
 134 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 135
 136 extern int snaplen;
 137 /* global pointer to end of current packet (during printing) */
 138 extern const u_char *snapend;
 139
 140 /*
 141  * True if  "l" bytes of "var" were captured.
 142  *
 143  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 144  * that "snapend - (l)" underflows.
 145  *
 146  * The check is for <= rather than < because "l" might be 0.
 147  */
 148 #define TTEST2(var, l) (snapend - (l) <= snapend && \
 149                         (const u_char *)&(var) <= snapend - (l))
 150
 151 /* True if "var" was captured */
 152 #define TTEST(var) TTEST2(var, sizeof(var))
 153
 154 /* Bail if "l" bytes of "var" were not captured */
 155 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 156
 157 /* Bail if "var" was not captured */
 158 #define TCHECK(var) TCHECK2(var, sizeof(var))
 159
 160 extern void ts_print(const struct timeval *);
 161 extern void relts_print(int);
 162
 163 extern int fn_print(const u_char *, const u_char *);
 164 extern int fn_printn(const u_char *, u_int, const u_char *);
 165 extern const char *tok2str(const struct tok *, const char *, int);
 166 extern int mask2plen(u_int32_t);
 167 extern char *bittok2str(const struct tok *, const char *, int);
 168 extern const char *tok2strary_internal(const char **, int, const char *, int);
 169 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 170
 171 extern const char *dnaddr_string(u_short);
 172
 173 extern void error(const char *, ...)
 174     __attribute__((noreturn, format (printf, 1, 2)));
 175 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 176
 177 extern char *read_infile(char *);
 178 extern char *copy_argv(char **);
 179
 180 extern void safeputchar(int);
 181 extern void safeputs(const char *);
 182
 183 extern const char *isonsap_string(const u_char *);
 184 extern const char *llcsap_string(u_char);
 185 extern const char *protoid_string(const u_char *);
 186 extern const char *ipxsap_string(u_short);
 187 extern const char *dnname_string(u_short);
 188 extern const char *dnnum_string(u_short);
 189
 190 /* The printer routines. */
 191
 192 #include <pcap.h>
 193
 194 extern int print_unknown_data(const u_char *, const char *,int);
 195 extern void ascii_print_with_offset(const u_char *, const u_char *, u_int, u_int);
 196 extern void ascii_print(const u_char *, const u_char *, u_int);
 197 extern void hex_print_with_offset(const u_char *, const u_char *, u_int, u_int);
 198 extern void telnet_print(const u_char *, u_int);
 199 extern void hex_print(const u_char *, const u_char *, u_int);
 200 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 201 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 202         const u_char *, u_short *);
 203 extern int snap_print(const u_char *, u_int, u_int, u_short *, u_int32_t,
 204         u_short, u_int);
 205 extern void aarp_print(const u_char *, u_int);
 206 extern void aodv_print(const u_char *, u_int, int);
 207 extern void arp_print(const u_char *, u_int, u_int);
 208 extern void atalk_print(const u_char *, u_int);
 209 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 210 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
 211 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
 212 extern void bootp_print(const u_char *, u_int);
 213 extern void bgp_print(const u_char *, int);
 214 extern void beep_print(const u_char *, u_int);
 215 extern void cnfp_print(const u_char *, const u_char *);
 216 extern void decnet_print(const u_char *, u_int, u_int);
 217 extern void default_print(const u_char *, u_int);
 218 extern void default_print_unaligned(const u_char *, u_int);
 219 extern void dvmrp_print(const u_char *, u_int);
 220 extern void egp_print(const u_char *);
 221 extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
 222 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
 223 extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
 224 extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
 225 extern void ether_print(const u_char *, u_int, u_int);
 226 extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
 227 extern u_int token_print(const u_char *, u_int, u_int);
 228 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 229 extern void fddi_print(const u_char *, u_int, u_int);
 230 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 231 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 232 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 233 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 234         const u_char *);
 235 extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
 236 extern void gre_print(const u_char *, u_int);
 237 extern void icmp_print(const u_char *, u_int, const u_char *, int);
 238 extern void igmp_print(const u_char *, u_int);
 239 extern void igrp_print(const u_char *, u_int, const u_char *);
 240 extern void ip_print(const u_char *, u_int);
 241 extern void ipN_print(const u_char *, u_int);
 242 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
 243 extern void ipx_print(const u_char *, u_int);
 244 extern void isoclns_print(const u_char *, u_int, u_int);
 245 extern void krb_print(const u_char *);
 246 extern u_int llap_print(const u_char *, u_int);
 247 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 248 extern void msdp_print(const unsigned char *, u_int);
 249 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 250 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 251 extern void ns_print(const u_char *, u_int, int);
 252 extern void ntp_print(const u_char *, u_int);
 253 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
 254 extern void ospf_print(const u_char *, u_int, const u_char *);
 255 extern void pimv1_print(const u_char *, u_int);
 256 extern void cisco_autorp_print(const u_char *, u_int);
 257 extern void rsvp_print(const u_char *, u_int);
 258 extern void ldp_print(const u_char *, u_int);
 259 extern void mobile_print(const u_char *, u_int);
 260 extern void pim_print(const u_char *, u_int);
 261 extern u_int pppoe_print(const u_char *, u_int);
 262 extern u_int ppp_print(register const u_char *, u_int);
 263 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 264 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 265 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 266 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 267 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 268 extern int vjc_print(register const char *, u_short);
 269 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
 270 extern void rip_print(const u_char *, u_int);
 271 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
 272 extern void lane_print(const u_char *, u_int, u_int);
 273 extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
 274 extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
 275 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 276 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 277 extern u_int sll_if_print(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 u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
 281 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 282 extern void tftp_print(const u_char *, u_int);
 283 extern void timed_print(const u_char *);
 284 extern void udp_print(const u_char *, u_int, const u_char *, int);
 285 extern void wb_print(const void *, u_int);
 286 extern int ah_print(register const u_char *);
 287 extern int esp_print(register const u_char *, register const u_char *, int *, int *);
 288 extern void isakmp_print(const u_char *, u_int, const u_char *);
 289 extern int ipcomp_print(register const u_char *, int *);
 290 extern void rx_print(register const u_char *, int, int, int, u_char *);
 291 extern void netbeui_print(u_short, const u_char *, int);
 292 extern void ipx_netbios_print(const u_char *, u_int);
 293 extern void nbt_tcp_print(const u_char *, int);
 294 extern void nbt_udp137_print(const u_char *, int);
 295 extern void nbt_udp138_print(const u_char *, int);
 296 extern char *smb_errstr(int, int);
 297 extern void print_data(const unsigned char *, int);
 298 extern void l2tp_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);
 301 extern void stp_print(const u_char *, u_int);
 302 extern void radius_print(const u_char *, u_int);
 303 extern void lwres_print(const u_char *, u_int);
 304 extern void pptp_print(const u_char *);
 305 extern void sctp_print(const u_char *, const u_char *, u_int);
 306 extern void mpls_print(const u_char *, u_int);
 307 extern void mpls_lsp_ping_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 extern void bfd_print(const u_char *, u_int, u_int);
 311
 312 #ifdef INET6
 313 extern void ip6_print(const u_char *, u_int);
 314 extern void ip6_opt_print(const u_char *, int);
 315 extern int hbhopt_print(const u_char *);
 316 extern int dstopt_print(const u_char *);
 317 extern int frag6_print(const u_char *, const u_char *);
 318 extern int mobility_print(const u_char *, const u_char *);
 319 extern void icmp6_print(const u_char *, u_int, const u_char *, int);
 320 extern void ripng_print(const u_char *, unsigned int);
 321 extern int rt6_print(const u_char *, const u_char *);
 322 extern void ospf6_print(const u_char *, u_int);
 323 extern void dhcp6_print(const u_char *, u_int);
 324 #endif /*INET6*/
 325 extern u_short in_cksum(const u_short *, register u_int, int);
 326 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 327
 328 #ifndef HAVE_BPF_DUMP
 329 struct bpf_program;
 330
 331 extern void bpf_dump(struct bpf_program *, int);
 332 #endif