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 1.205 2003-01-23 09:05:38 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 #define _U_     __attribute__((unused))
  36
  37 /* snprintf et al */
  38
  39 #include <stdarg.h>
  40
  41 #if !defined(HAVE_SNPRINTF)
  42 int snprintf(char *, size_t, const char *, ...)
  43      __attribute__((format(printf, 3, 4)));
  44 #endif
  45
  46 #if !defined(HAVE_VSNPRINTF)
  47 int vsnprintf(char *, size_t, const char *, va_list)
  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 *);
  60 #endif
  61
  62 struct tok {
  63         int v;                  /* value */
  64         const 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 extern int Aflag;               /* print packet only in ascii observing TAB, LF, CR and SPACE as graphical chars */
  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 /*
 102  * The default snapshot length.  This value allows most printers to print
 103  * useful information while keeping the amount of unwanted data down.
 104  */
 105 #ifndef INET6
 106 #define DEFAULT_SNAPLEN 68      /* ether + IPv4 + TCP + 14 */
 107 #else
 108 #define DEFAULT_SNAPLEN 96      /* ether + IPv6 + TCP + 22 */
 109 #endif
 110
 111 #ifndef BIG_ENDIAN
 112 #define BIG_ENDIAN 4321
 113 #define LITTLE_ENDIAN 1234
 114 #endif
 115
 116 #define ESRC(ep) ((ep)->ether_shost)
 117 #define EDST(ep) ((ep)->ether_dhost)
 118
 119 #ifndef NTOHL
 120 #define NTOHL(x)        (x) = ntohl(x)
 121 #define NTOHS(x)        (x) = ntohs(x)
 122 #define HTONL(x)        (x) = htonl(x)
 123 #define HTONS(x)        (x) = htons(x)
 124 #endif
 125 #endif
 126
 127 extern char *program_name;      /* used to generate self-identifying messages */
 128
 129 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 130
 131 extern int snaplen;
 132 /* global pointer to end of current packet (during printing) */
 133 extern const u_char *snapend;
 134
 135 /*
 136  * True if  "l" bytes of "var" were captured.
 137  *
 138  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 139  * that "snapend - (l)" underflows.
 140  *
 141  * The check is for <= rather than < because "l" might be 0.
 142  */
 143 #define TTEST2(var, l) (snapend - (l) <= snapend && \
 144                         (const u_char *)&(var) <= snapend - (l))
 145
 146 /* True if "var" was captured */
 147 #define TTEST(var) TTEST2(var, sizeof(var))
 148
 149 /* Bail if "l" bytes of "var" were not captured */
 150 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 151
 152 /* Bail if "var" was not captured */
 153 #define TCHECK(var) TCHECK2(var, sizeof(var))
 154
 155 extern void ts_print(const struct timeval *);
 156 extern void relts_print(int);
 157
 158 extern int fn_print(const u_char *, const u_char *);
 159 extern int fn_printn(const u_char *, u_int, const u_char *);
 160 extern const char *tok2str(const struct tok *, const char *, int);
 161 extern int mask2plen(u_int32_t);
 162 extern char *bittok2str(const struct tok *, const char *, int);
 163 extern const char *tok2strary_internal(const char **, int, const char *, int);
 164 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 165
 166 extern const char *dnaddr_string(u_short);
 167
 168 extern void error(const char *, ...)
 169     __attribute__((noreturn, format (printf, 1, 2)));
 170 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 171
 172 extern char *read_infile(char *);
 173 extern char *copy_argv(char **);
 174
 175 extern void safeputchar(int);
 176 extern void safeputs(const char *);
 177
 178 extern const char *isonsap_string(const u_char *);
 179 extern const char *llcsap_string(u_char);
 180 extern const char *protoid_string(const u_char *);
 181 extern const char *ipxsap_string(u_short);
 182 extern const char *dnname_string(u_short);
 183 extern const char *dnnum_string(u_short);
 184
 185 /* The printer routines. */
 186
 187 #include <pcap.h>
 188
 189 extern int print_unknown_data(const u_char *, const char *,int);
 190 extern void ascii_print_with_offset(const u_char *, u_int, u_int);
 191 extern void ascii_print(const u_char *, u_int);
 192 extern void hex_print_with_offset(const u_char *, u_int, u_int);
 193 extern void telnet_print(const u_char *, u_int);
 194 extern void hex_print(const u_char *, u_int);
 195 extern int ether_encap_print(u_short, const u_char *, u_int, u_int, u_short *);
 196 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 197         const u_char *, u_short *);
 198 extern int snap_print(const u_char *, u_int, u_int, u_short *, u_int32_t,
 199         u_short, u_int);
 200 extern void aarp_print(const u_char *, u_int);
 201 extern void arp_print(const u_char *, u_int, u_int);
 202 extern void atalk_print(const u_char *, u_int);
 203 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 204 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
 205 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
 206 extern void bootp_print(const u_char *, u_short, u_short, u_int);
 207 extern void bgp_print(const u_char *, int);
 208 extern void beep_print(const u_char *, u_int);
 209 extern void cnfp_print(const u_char *, const u_char *);
 210 extern void decnet_print(const u_char *, u_int, u_int);
 211 extern void default_print(const u_char *, u_int);
 212 extern void default_print_unaligned(const u_char *, u_int);
 213 extern void dvmrp_print(const u_char *, u_int);
 214 extern void egp_print(const u_char *);
 215 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
 216 extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
 217 extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
 218 extern void ether_print(const u_char *, u_int, u_int);
 219 extern u_int ether_if_print(const struct pcap_pkthdr *,
 220         const u_char *);
 221 extern u_int token_print(const u_char *, u_int, u_int);
 222 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 223 extern void fddi_print(const u_char *, u_int, u_int);
 224 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 225 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 226 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 227 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 228         const u_char *);
 229 extern void gre_print(const u_char *, u_int);
 230 extern void icmp_print(const u_char *, u_int, const u_char *);
 231 extern void igmp_print(const u_char *, u_int);
 232 extern void igrp_print(const u_char *, u_int, const u_char *);
 233 extern void ip_print(const u_char *, u_int);
 234 extern void ipN_print(const u_char *, u_int);
 235 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
 236 extern void ipx_print(const u_char *, u_int);
 237 extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
 238         const u_char *);
 239 extern void krb_print(const u_char *);
 240 extern u_int llap_print(const u_char *, u_int);
 241 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 242 extern void msdp_print(const unsigned char *, u_int);
 243 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 244 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 245 extern void ns_print(const u_char *, u_int);
 246 extern void ntp_print(const u_char *, u_int);
 247 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
 248 extern void ospf_print(const u_char *, u_int, const u_char *);
 249 extern void pimv1_print(const u_char *, u_int);
 250 extern void cisco_autorp_print(const u_char *, u_int);
 251 extern void rsvp_print(const u_char *, u_int);
 252 extern void ldp_print(const u_char *, u_int);
 253 extern void mobile_print(const u_char *, u_int);
 254 extern void pim_print(const u_char *, u_int);
 255 extern u_int pppoe_print(const u_char *, u_int);
 256 extern u_int ppp_print(register const u_char *, u_int);
 257 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 258 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 259 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 260 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 261 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 262 extern int vjc_print(register const char *, u_short);
 263 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
 264 extern void rip_print(const u_char *, u_int);
 265 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
 266 extern void lane_print(const u_char *, u_int, u_int);
 267 extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
 268 extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
 269 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 270 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 271 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
 272 extern void snmp_print(const u_char *, u_int);
 273 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 274 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 275 extern void tftp_print(const u_char *, u_int);
 276 extern void timed_print(const u_char *);
 277 extern void udp_print(const u_char *, u_int, const u_char *, int);
 278 extern void wb_print(const void *, u_int);
 279 extern int ah_print(register const u_char *);
 280 extern int esp_print(register const u_char *, register const u_char *, int *, int *);
 281 extern void isakmp_print(const u_char *, u_int, const u_char *);
 282 extern int ipcomp_print(register const u_char *, int *);
 283 extern void rx_print(register const u_char *, int, int, int, u_char *);
 284 extern void netbeui_print(u_short, const u_char *, int);
 285 extern void ipx_netbios_print(const u_char *, u_int);
 286 extern void nbt_tcp_print(const u_char *, int);
 287 extern void nbt_udp137_print(const u_char *, int);
 288 extern void nbt_udp138_print(const u_char *, int);
 289 extern char *smb_errstr(int, int);
 290 extern void print_data(const unsigned char *, int);
 291 extern void l2tp_print(const u_char *, u_int);
 292 extern void vrrp_print(const u_char *, u_int, int);
 293 extern void cdp_print(const u_char *, u_int, u_int);
 294 extern void stp_print(const u_char *, u_int);
 295 extern void radius_print(const u_char *, u_int);
 296 extern void lwres_print(const u_char *, u_int);
 297 extern void pptp_print(const u_char *);
 298 extern void sctp_print(const u_char *, const u_char *, u_int);
 299 extern void mpls_print(const u_char *, u_int);
 300 extern void zephyr_print(const u_char *, int);
 301 extern void hsrp_print(const u_char *, u_int);
 302
 303 #ifdef INET6
 304 extern void ip6_print(const u_char *, u_int);
 305 extern void ip6_opt_print(const u_char *, int);
 306 extern int hbhopt_print(const u_char *);
 307 extern int dstopt_print(const u_char *);
 308 extern int frag6_print(const u_char *, const u_char *);
 309 extern int mobility_print(const u_char *, const u_char *);
 310 extern void icmp6_print(const u_char *, const u_char *);
 311 extern void ripng_print(const u_char *, unsigned int);
 312 extern int rt6_print(const u_char *, const u_char *);
 313 extern void ospf6_print(const u_char *, u_int);
 314 extern void dhcp6_print(const u_char *, u_int, u_int16_t, u_int16_t);
 315 #endif /*INET6*/
 316 extern u_short in_cksum(const u_short *, register u_int, int);
 317 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 318
 319 #ifndef HAVE_BPF_DUMP
 320 struct bpf_program;
 321
 322 extern void bpf_dump(struct bpf_program *, int);
 323 #endif