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 1.285 2008-08-16 11:36:20 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 /* snprintf et al */
  32
  33 #include <stdarg.h>
  34
  35 #if HAVE_STDINT_H
  36 #include <stdint.h>
  37 #endif
  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 #define PT_CARP         10      /* Common Address Redundancy Protocol */
  74 #define PT_RADIUS       11      /* RADIUS authentication Protocol */
  75 #define PT_ZMTP1        12      /* ZeroMQ Message Transport Protocol 1.0 */
  76 #define PT_VXLAN        13      /* Virtual eXtensible Local Area Network */
  77 #define PT_PGM          14      /* [UDP-encapsulated] Pragmatic General Multicast */
  78 #define PT_PGM_ZMTP1    15      /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
  79
  80 #ifndef min
  81 #define min(a,b) ((a)>(b)?(b):(a))
  82 #endif
  83 #ifndef max
  84 #define max(a,b) ((b)>(a)?(b):(a))
  85 #endif
  86
  87 #define ESRC(ep) ((ep)->ether_shost)
  88 #define EDST(ep) ((ep)->ether_dhost)
  89
  90 #ifndef NTOHL
  91 #define NTOHL(x)        (x) = ntohl(x)
  92 #define NTOHS(x)        (x) = ntohs(x)
  93 #define HTONL(x)        (x) = htonl(x)
  94 #define HTONS(x)        (x) = htons(x)
  95 #endif
  96 #endif
  97
  98 #ifndef MIN
  99 #define MIN(a,b) ((a)<(b)?(a):(b))
 100 #endif
 101
 102 extern char *program_name;      /* used to generate self-identifying messages */
 103
 104 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 105
 106 /*
 107  * True if  "l" bytes of "var" were captured.
 108  *
 109  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 110  * that "snapend - (l)" underflows.
 111  *
 112  * The check is for <= rather than < because "l" might be 0.
 113  *
 114  * We cast the pointers to uintptr_t to make sure that the compiler
 115  * doesn't optimize away any of these tests (which it is allowed to
 116  * do, as adding an integer to, or subtracting an integer from, a
 117  * pointer assumes that the pointer is a pointer to an element of an
 118  * array and that the result of the addition or subtraction yields a
 119  * pointer to another member of the array, so that, for example, if
 120  * you subtract a positive integer from a pointer, the result is
 121  * guaranteed to be less than the original pointer value). See
 122  *
 123  *      http://www.kb.cert.org/vuls/id/162289
 124  */
 125 #define TTEST2(var, l) \
 126         ((uintptr_t)snapend - (l) <= (uintptr_t)snapend && \
 127            (uintptr_t)&(var) <= (uintptr_t)snapend - (l))
 128
 129 /* True if "var" was captured */
 130 #define TTEST(var) TTEST2(var, sizeof(var))
 131
 132 /* Bail if "l" bytes of "var" were not captured */
 133 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 134
 135 /* Bail if "var" was not captured */
 136 #define TCHECK(var) TCHECK2(var, sizeof(var))
 137
 138 extern void ts_print(const struct timeval *);
 139 extern void relts_print(int);
 140
 141 extern int fn_print(const u_char *, const u_char *);
 142 extern int fn_printn(const u_char *, u_int, const u_char *);
 143 extern int fn_printzp(const u_char *, u_int, const u_char *);
 144 extern int mask2plen(u_int32_t);
 145 extern const char *tok2strary_internal(const char **, int, const char *, int);
 146 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 147
 148 extern const char *dnaddr_string(u_short);
 149
 150 extern void error(const char *, ...)
 151     __attribute__((noreturn, format (printf, 1, 2)));
 152 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 153
 154 extern char *read_infile(char *);
 155 extern char *copy_argv(char **);
 156
 157 extern void safeputchar(int);
 158 extern void safeputs(const char *, int);
 159
 160 extern const char *isonsap_string(const u_char *, register u_int);
 161 extern const char *protoid_string(const u_char *);
 162 extern const char *ipxsap_string(u_short);
 163 extern const char *dnname_string(u_short);
 164 extern const char *dnnum_string(u_short);
 165
 166 /* checksum routines */
 167 extern void init_checksum(void);
 168 extern u_int16_t verify_crc10_cksum(u_int16_t, const u_char *, int);
 169 extern u_int16_t create_osi_cksum(const u_int8_t *, int, int);
 170
 171 /* The printer routines. */
 172
 173 #include <pcap.h>
 174
 175 extern int print_unknown_data(const u_char *, const char *,int);
 176 extern void ascii_print(const u_char *, u_int);
 177 extern void hex_and_ascii_print_with_offset(const char *, const u_char *,
 178         u_int, u_int);
 179 extern void hex_and_ascii_print(const char *, const u_char *, u_int);
 180 extern void hex_print_with_offset(const char *, const u_char *, u_int, u_int);
 181 extern void hex_print(const char *, const u_char *, u_int);
 182 extern void telnet_print(const u_char *, u_int);
 183 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 184         const u_char *, u_short *);
 185 extern int snap_print(const u_char *, u_int, u_int, u_int);
 186 extern void aarp_print(const u_char *, u_int);
 187 extern void aodv_print(const u_char *, u_int, int);
 188 extern void atalk_print(const u_char *, u_int);
 189 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 190 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
 191 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
 192 extern int oam_print(const u_char *, u_int, u_int);
 193 extern void bootp_print(const u_char *, u_int);
 194 extern void bgp_print(const u_char *, int);
 195 extern void beep_print(const u_char *, u_int);
 196 extern void cnfp_print(const u_char *, const u_char *);
 197 extern void decnet_print(const u_char *, u_int, u_int);
 198 extern void default_print(const u_char *, u_int);
 199 extern void dvmrp_print(const u_char *, u_int);
 200 extern void egp_print(const u_char *, u_int);
 201 extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
 202 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
 203 extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
 204 extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
 205 extern u_int token_print(const u_char *, u_int, u_int);
 206 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 207 extern void fddi_print(const u_char *, u_int, u_int);
 208 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 209 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 210 extern u_int mfr_if_print(const struct pcap_pkthdr *, const u_char *);
 211 extern u_int fr_print(register const u_char *, u_int);
 212 extern u_int mfr_print(register const u_char *, u_int);
 213 extern char *q922_string(const u_char *);
 214 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 215 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 216         const u_char *);
 217 extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
 218 extern u_int ieee802_11_radio_avs_if_print(const struct pcap_pkthdr *,
 219         const u_char *);
 220 extern void gre_print(const u_char *, u_int);
 221 extern void icmp_print(const u_char *, u_int, const u_char *, int);
 222 extern void igmp_print(const u_char *, u_int);
 223 extern void igrp_print(const u_char *, u_int, const u_char *);
 224 extern void ipN_print(const u_char *, u_int);
 225 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
 226 extern void ipx_print(const u_char *, u_int);
 227 extern void isoclns_print(const u_char *, u_int, u_int);
 228 extern void krb_print(const u_char *);
 229 extern u_int llap_print(const u_char *, u_int);
 230 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 231 extern void msdp_print(const unsigned char *, u_int);
 232 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 233 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 234 extern void ns_print(const u_char *, u_int, int);
 235 extern const u_char * ns_nprint (register const u_char *, register const u_char *);
 236 extern void ntp_print(const u_char *, u_int);
 237 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
 238 extern void ospf_print(const u_char *, u_int, const u_char *);
 239 extern void olsr_print (const u_char *, u_int, int);
 240 extern void pimv1_print(const u_char *, u_int);
 241 extern void cisco_autorp_print(const u_char *, u_int);
 242 extern void rsvp_print(const u_char *, u_int);
 243 extern void ldp_print(const u_char *, u_int);
 244 extern void lldp_print(const u_char *, u_int);
 245 extern void rpki_rtr_print(const u_char *, u_int);
 246 extern void lmp_print(const u_char *, u_int);
 247 extern void lspping_print(const u_char *, u_int);
 248 extern void lwapp_control_print(const u_char *, u_int, int);
 249 extern void lwapp_data_print(const u_char *, u_int);
 250 extern void eigrp_print(const u_char *, u_int);
 251 extern void mobile_print(const u_char *, u_int);
 252 extern void pim_print(const u_char *, u_int, u_int);
 253 extern u_int pppoe_print(const u_char *, u_int);
 254 extern u_int ppp_print(register const u_char *, u_int);
 255 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 256 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 257 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 258 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 259 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 260 extern void q933_print(const u_char *, u_int);
 261 extern int vjc_print(register const char *, u_short);
 262 extern void vqp_print(register const u_char *, register u_int);
 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 chdlc_print(register const u_char *, u_int);
 272 extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
 273 extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
 274 extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
 275 extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
 276 extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
 277 extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
 278 extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
 279 extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
 280 extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
 281 extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
 282 extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
 283 extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
 284 extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
 285 extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
 286 extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
 287 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
 288 extern void snmp_print(const u_char *, u_int);
 289 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 290 extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
 291 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 292 extern void tftp_print(const u_char *, u_int);
 293 extern void timed_print(const u_char *);
 294 extern void udld_print(const u_char *, u_int);
 295 extern void udp_print(const u_char *, u_int, const u_char *, int);
 296 extern void vtp_print(const u_char *, u_int);
 297 extern void wb_print(const void *, u_int);
 298 extern int ah_print(register const u_char *);
 299 extern int ipcomp_print(register const u_char *, int *);
 300 extern void rx_print(register const u_char *, int, int, int, u_char *);
 301 extern void netbeui_print(u_short, const u_char *, int);
 302 extern void ipx_netbios_print(const u_char *, u_int);
 303 extern void nbt_tcp_print(const u_char *, int);
 304 extern void nbt_udp137_print(const u_char *, int);
 305 extern void nbt_udp138_print(const u_char *, int);
 306 extern void smb_tcp_print(const u_char *, int);
 307 extern char *smb_errstr(int, int);
 308 extern const char *nt_errstr(u_int32_t);
 309 extern void print_data(const unsigned char *, int);
 310 extern void l2tp_print(const u_char *, u_int);
 311 extern void vrrp_print(const u_char *, u_int, int);
 312 extern void carp_print(const u_char *, u_int, int);
 313 extern void slow_print(const u_char *, u_int);
 314 extern void sflow_print(const u_char *, u_int);
 315 extern void mpcp_print(const u_char *, u_int);
 316 extern void cfm_print(const u_char *, u_int);
 317 extern void pgm_print(const u_char *, u_int, const u_char *);
 318 extern void cdp_print(const u_char *, u_int, u_int);
 319 extern void dtp_print(const u_char *, u_int);
 320 extern void stp_print(const u_char *, u_int);
 321 extern void radius_print(const u_char *, u_int);
 322 extern void lwres_print(const u_char *, u_int);
 323 extern void pptp_print(const u_char *);
 324 extern void dccp_print(const u_char *, const u_char *, u_int);
 325 extern void sctp_print(const u_char *, const u_char *, u_int);
 326 extern void forces_print(const u_char *, u_int);
 327 extern void mpls_print(const u_char *, u_int);
 328 extern void mpls_lsp_ping_print(const u_char *, u_int);
 329 extern void zephyr_print(const u_char *, int);
 330 extern void zmtp1_print(const u_char *, u_int);
 331 extern void zmtp1_print_datagram(const u_char *, u_int);
 332 extern void hsrp_print(const u_char *, u_int);
 333 extern void bfd_print(const u_char *, u_int, u_int);
 334 extern void sip_print(const u_char *, u_int);
 335 extern void syslog_print(const u_char *, u_int);
 336 extern int mptcp_print(const u_char *, u_int, u_char);
 337 extern u_int bt_if_print(const struct pcap_pkthdr *, const u_char *);
 338 extern u_int usb_linux_48_byte_print(const struct pcap_pkthdr *, const u_char *);
 339 extern u_int usb_linux_64_byte_print(const struct pcap_pkthdr *, const u_char *);
 340 extern void vxlan_print(const u_char *, u_int);
 341 extern void otv_print(const u_char *, u_int);
 342
 343
 344 #ifdef INET6
 345 extern void ip6_opt_print(const u_char *, int);
 346 extern int hbhopt_print(const u_char *);
 347 extern int dstopt_print(const u_char *);
 348 extern int frag6_print(const u_char *, const u_char *);
 349 extern int mobility_print(const u_char *, const u_char *);
 350 extern void ripng_print(const u_char *, unsigned int);
 351 extern int rt6_print(const u_char *, const u_char *);
 352 extern void ospf6_print(const u_char *, u_int);
 353 extern void dhcp6_print(const u_char *, u_int);
 354 extern void babel_print(const u_char *, u_int);
 355 extern int mask62plen(const u_char *);
 356 #endif /*INET6*/
 357
 358 struct cksum_vec {
 359         const u_int8_t  *ptr;
 360         int             len;
 361 };
 362 extern u_int16_t in_cksum(const struct cksum_vec *, int);
 363 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 364
 365 #ifndef HAVE_BPF_DUMP
 366 struct bpf_program;
 367
 368 extern void bpf_dump(const struct bpf_program *, int);
 369
 370 #endif
 371
 372 #include "netdissect.h"
 373
 374 /* forward compatibility */
 375
 376 #ifndef NETDISSECT_REWORKED
 377 extern netdissect_options *gndo;
 378
 379 #define bflag gndo->ndo_bflag
 380 #define eflag gndo->ndo_eflag
 381 #define fflag gndo->ndo_fflag
 382 #define jflag gndo->ndo_jflag
 383 #define Kflag gndo->ndo_Kflag
 384 #define nflag gndo->ndo_nflag
 385 #define Nflag gndo->ndo_Nflag
 386 #define Oflag gndo->ndo_Oflag
 387 #define pflag gndo->ndo_pflag
 388 #define qflag gndo->ndo_qflag
 389 #define Rflag gndo->ndo_Rflag
 390 #define sflag gndo->ndo_sflag
 391 #define Sflag gndo->ndo_Sflag
 392 #define tflag gndo->ndo_tflag
 393 #define Uflag gndo->ndo_Uflag
 394 #define uflag gndo->ndo_uflag
 395 #define vflag gndo->ndo_vflag
 396 #define xflag gndo->ndo_xflag
 397 #define Xflag gndo->ndo_Xflag
 398 #define Cflag gndo->ndo_Cflag
 399 #define Gflag gndo->ndo_Gflag
 400 #define Aflag gndo->ndo_Aflag
 401 #define Bflag gndo->ndo_Bflag
 402 #define Iflag gndo->ndo_Iflag
 403 #define suppress_default_print gndo->ndo_suppress_default_print
 404 #define packettype gndo->ndo_packettype
 405 #define sigsecret gndo->ndo_sigsecret
 406 #define Wflag gndo->ndo_Wflag
 407 #define WflagChars gndo->ndo_WflagChars
 408 #define Cflag_count gndo->ndo_Cflag_count
 409 #define Gflag_count gndo->ndo_Gflag_count
 410 #define Gflag_time gndo->ndo_Gflag_time
 411 #define Hflag gndo->ndo_Hflag
 412 #define snaplen     gndo->ndo_snaplen
 413 #define snapend     gndo->ndo_snapend
 414
 415 #endif