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 #ifndef HAVE___ATTRIBUTE__
  32 #define __attribute__(x)
  33 #endif
  34
  35 /*
  36  * Used to declare a structure unaligned, so that the C compiler,
  37  * if necessary, generates code that doesn't assume alignment.
  38  * This is required because there is no guarantee that the packet
  39  * data we get from libpcap/WinPcap is properly aligned.
  40  *
  41  * This assumes that, for all compilers that support __attribute__:
  42  *
  43  *      1) they support __attribute__((packed));
  44  *
  45  *      2) for all instruction set architectures requiring strict
  46  *         alignment, declaring a structure with that attribute
  47  *         causes the compiler to generate code that handles
  48  *         misaligned 2-byte, 4-byte, and 8-byte integral
  49  *         quantities.
  50  *
  51  * It does not (yet) handle compilers where you can get the compiler
  52  * to generate code of that sort by some other means.
  53  *
  54  * This is required in order to, for example, keep the compiler from
  55  * generating, for
  56  *
  57  *      if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
  58  *
  59  * in print-bootp.c, code that loads the first 4-byte word of a
  60  * "struct bootp", masking out the bp_hops field, and comparing the result
  61  * against 0x01010600.
  62  *
  63  * Note: this also requires that padding be put into the structure,
  64  * at least for compilers where it's implemented as __attribute__((packed)).
  65  */
  66 #define UNALIGNED       __attribute__((packed))
  67
  68 /* snprintf et al */
  69
  70 #include <stdarg.h>
  71
  72 #if HAVE_STDINT_H
  73 #include <stdint.h>
  74 #endif
  75
  76 #if !defined(HAVE_SNPRINTF)
  77 int snprintf(char *, size_t, const char *, ...)
  78      __attribute__((format(printf, 3, 4)));
  79 #endif
  80
  81 #if !defined(HAVE_VSNPRINTF)
  82 int vsnprintf(char *, size_t, const char *, va_list)
  83      __attribute__((format(printf, 3, 0)));
  84 #endif
  85
  86 #ifndef HAVE_STRLCAT
  87 extern size_t strlcat(char *, const char *, size_t);
  88 #endif
  89 #ifndef HAVE_STRLCPY
  90 extern size_t strlcpy(char *, const char *, size_t);
  91 #endif
  92
  93 #ifndef HAVE_STRDUP
  94 extern char *strdup(const char *);
  95 #endif
  96
  97 #ifndef HAVE_STRSEP
  98 extern char *strsep(char **, const char *);
  99 #endif
 100
 101 #define PT_VAT          1       /* Visual Audio Tool */
 102 #define PT_WB           2       /* distributed White Board */
 103 #define PT_RPC          3       /* Remote Procedure Call */
 104 #define PT_RTP          4       /* Real-Time Applications protocol */
 105 #define PT_RTCP         5       /* Real-Time Applications control protocol */
 106 #define PT_SNMP         6       /* Simple Network Management Protocol */
 107 #define PT_CNFP         7       /* Cisco NetFlow protocol */
 108 #define PT_TFTP         8       /* trivial file transfer protocol */
 109 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
 110
 111 #ifndef min
 112 #define min(a,b) ((a)>(b)?(b):(a))
 113 #endif
 114 #ifndef max
 115 #define max(a,b) ((b)>(a)?(b):(a))
 116 #endif
 117
 118 #define ESRC(ep) ((ep)->ether_shost)
 119 #define EDST(ep) ((ep)->ether_dhost)
 120
 121 #ifndef NTOHL
 122 #define NTOHL(x)        (x) = ntohl(x)
 123 #define NTOHS(x)        (x) = ntohs(x)
 124 #define HTONL(x)        (x) = htonl(x)
 125 #define HTONS(x)        (x) = htons(x)
 126 #endif
 127 #endif
 128
 129 #ifndef MIN
 130 #define MIN(a,b) ((a)<(b)?(a):(b))
 131 #endif
 132
 133 extern char *program_name;      /* used to generate self-identifying messages */
 134
 135 extern int32_t thiszone;        /* seconds offset from gmt to local time */
 136
 137 /*
 138  * True if  "l" bytes of "var" were captured.
 139  *
 140  * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
 141  * that "snapend - (l)" underflows.
 142  *
 143  * The check is for <= rather than < because "l" might be 0.
 144  */
 145 #define TTEST2(var, l) (snapend - (l) <= snapend && \
 146                         (const u_char *)&(var) <= snapend - (l))
 147
 148 /* True if "var" was captured */
 149 #define TTEST(var) TTEST2(var, sizeof(var))
 150
 151 /* Bail if "l" bytes of "var" were not captured */
 152 #define TCHECK2(var, l) if (!TTEST2(var, l)) goto trunc
 153
 154 /* Bail if "var" was not captured */
 155 #define TCHECK(var) TCHECK2(var, sizeof(var))
 156
 157 extern void ts_print(const struct timeval *);
 158 extern void relts_print(int);
 159
 160 extern int fn_print(const u_char *, const u_char *);
 161 extern int fn_printn(const u_char *, u_int, const u_char *);
 162 extern int fn_printzp(const u_char *, u_int, const u_char *);
 163 extern int mask2plen(u_int32_t);
 164 extern const char *tok2strary_internal(const char **, int, const char *, int);
 165 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 166
 167 extern const char *dnaddr_string(u_short);
 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 *, int);
 178
 179 extern const char *isonsap_string(const u_char *, register u_int);
 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 /* checksum routines */
 186 extern void init_checksum(void);
 187 extern u_int16_t verify_crc10_cksum(u_int16_t, const u_char *, int);
 188 extern u_int16_t create_osi_cksum(const u_int8_t *, int, int);
 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(const u_char *, u_int);
 196 extern void hex_and_ascii_print_with_offset(const char *, const u_char *,
 197         u_int, u_int);
 198 extern void hex_and_ascii_print(const char *, const u_char *, u_int);
 199 extern void hex_print_with_offset(const char *, const u_char *, u_int, u_int);
 200 extern void hex_print(const char *, const u_char *, u_int);
 201 extern void telnet_print(const u_char *, u_int);
 202 extern int ethertype_print(u_short, const u_char *, u_int, u_int);
 203 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 204         const u_char *, u_short *);
 205 extern int snap_print(const u_char *, u_int, u_int, u_int);
 206 extern void aarp_print(const u_char *, u_int);
 207 extern void aodv_print(const u_char *, u_int, 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 int oam_print(const u_char *, u_int, u_int);
 213 extern void bootp_print(const u_char *, u_int);
 214 extern void bgp_print(const u_char *, int);
 215 extern void beep_print(const u_char *, u_int);
 216 extern void cnfp_print(const u_char *, const u_char *);
 217 extern void decnet_print(const u_char *, u_int, u_int);
 218 extern void default_print(const u_char *, u_int);
 219 extern void dvmrp_print(const u_char *, u_int);
 220 extern void egp_print(const u_char *, u_int);
 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     void (*)(const u_char *), const u_char *);
 227 extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
 228 extern u_int token_print(const u_char *, u_int, u_int);
 229 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 230 extern void fddi_print(const u_char *, u_int, u_int);
 231 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 232 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 233 extern u_int mfr_if_print(const struct pcap_pkthdr *, const u_char *);
 234 extern u_int fr_print(register const u_char *, u_int);
 235 extern u_int mfr_print(register const u_char *, u_int);
 236 extern char *q922_string(const u_char *);
 237 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 238 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 239         const u_char *);
 240 extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
 241 extern u_int ieee802_11_radio_avs_if_print(const struct pcap_pkthdr *,
 242         const u_char *);
 243 extern void gre_print(const u_char *, u_int);
 244 extern void icmp_print(const u_char *, u_int, const u_char *, int);
 245 extern void igmp_print(const u_char *, u_int);
 246 extern void igrp_print(const u_char *, u_int, const u_char *);
 247 extern void ipN_print(const u_char *, u_int);
 248 extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);
 249 extern void ipx_print(const u_char *, u_int);
 250 extern void isoclns_print(const u_char *, u_int, u_int);
 251 extern void krb_print(const u_char *);
 252 extern u_int llap_print(const u_char *, u_int);
 253 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 254 extern void msdp_print(const unsigned char *, u_int);
 255 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 256 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 257 extern void ns_print(const u_char *, u_int, int);
 258 extern void ntp_print(const u_char *, u_int);
 259 extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);
 260 extern void ospf_print(const u_char *, u_int, const u_char *);
 261 extern void olsr_print (const u_char *, u_int, int);
 262 extern void pimv1_print(const u_char *, u_int);
 263 extern void cisco_autorp_print(const u_char *, u_int);
 264 extern void rsvp_print(const u_char *, u_int);
 265 extern void ldp_print(const u_char *, u_int);
 266 extern void lldp_print(const u_char *, u_int);
 267 extern void lmp_print(const u_char *, u_int);
 268 extern void lspping_print(const u_char *, u_int);
 269 extern void lwapp_control_print(const u_char *, u_int, int);
 270 extern void lwapp_data_print(const u_char *, u_int);
 271 extern void eigrp_print(const u_char *, u_int);
 272 extern void mobile_print(const u_char *, u_int);
 273 extern void pim_print(const u_char *, u_int, u_int);
 274 extern u_int pppoe_print(const u_char *, u_int);
 275 extern u_int ppp_print(register const u_char *, u_int);
 276 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 277 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 278 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 279 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 280 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 281 extern void q933_print(const u_char *, u_int);
 282 extern int vjc_print(register const char *, u_short);
 283 extern void vqp_print(register const u_char *, register u_int);
 284 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
 285 extern void rip_print(const u_char *, u_int);
 286 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
 287 extern void lane_print(const u_char *, u_int, u_int);
 288 extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
 289 extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
 290 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 291 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 292 extern u_int chdlc_print(register const u_char *, u_int);
 293 extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
 294 extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
 295 extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
 296 extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
 297 extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
 298 extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
 299 extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
 300 extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
 301 extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
 302 extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
 303 extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
 304 extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
 305 extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
 306 extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
 307 extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
 308 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
 309 extern void snmp_print(const u_char *, u_int);
 310 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 311 extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
 312 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 313 extern void tftp_print(const u_char *, u_int);
 314 extern void timed_print(const u_char *);
 315 extern void udld_print(const u_char *, u_int);
 316 extern void udp_print(const u_char *, u_int, const u_char *, int);
 317 extern void vtp_print(const u_char *, u_int);
 318 extern void wb_print(const void *, u_int);
 319 extern int ah_print(register const u_char *);
 320 extern int ipcomp_print(register const u_char *, int *);
 321 extern void rx_print(register const u_char *, int, int, int, u_char *);
 322 extern void netbeui_print(u_short, const u_char *, int);
 323 extern void ipx_netbios_print(const u_char *, u_int);
 324 extern void nbt_tcp_print(const u_char *, int);
 325 extern void nbt_udp137_print(const u_char *, int);
 326 extern void nbt_udp138_print(const u_char *, int);
 327 extern void smb_tcp_print(const u_char *, int);
 328 extern char *smb_errstr(int, int);
 329 extern const char *nt_errstr(u_int32_t);
 330 extern void print_data(const unsigned char *, int);
 331 extern void l2tp_print(const u_char *, u_int);
 332 extern void vrrp_print(const u_char *, u_int, int);
 333 extern void slow_print(const u_char *, u_int);
 334 extern void sflow_print(const u_char *, u_int);
 335 extern void mpcp_print(const u_char *, u_int);
 336 extern void cfm_print(const u_char *, u_int);
 337 extern void pgm_print(const u_char *, u_int, const u_char *);
 338 extern void cdp_print(const u_char *, u_int, u_int);
 339 extern void dtp_print(const u_char *, u_int);
 340 extern void stp_print(const u_char *, u_int);
 341 extern void radius_print(const u_char *, u_int);
 342 extern void lwres_print(const u_char *, u_int);
 343 extern void pptp_print(const u_char *);
 344 extern void dccp_print(const u_char *, const u_char *, u_int);
 345 extern void sctp_print(const u_char *, const u_char *, u_int);
 346 extern void forces_print(const u_char *, u_int);
 347 extern void mpls_print(const u_char *, u_int);
 348 extern void mpls_lsp_ping_print(const u_char *, u_int);
 349 extern void zephyr_print(const u_char *, int);
 350 extern void hsrp_print(const u_char *, u_int);
 351 extern void bfd_print(const u_char *, u_int, u_int);
 352 extern void sip_print(const u_char *, u_int);
 353 extern void syslog_print(const u_char *, u_int);
 354 extern u_int bt_if_print(const struct pcap_pkthdr *, const u_char *);
 355 extern u_int usb_linux_48_byte_print(const struct pcap_pkthdr *, const u_char *);
 356 extern u_int usb_linux_64_byte_print(const struct pcap_pkthdr *, const u_char *);
 357
 358 #ifdef INET6
 359 extern void ip6_print(const u_char *, u_int);
 360 extern void ip6_opt_print(const u_char *, int);
 361 extern int nextproto6_cksum(const struct ip6_hdr *, const u_short *, u_int, u_int);
 362 extern int hbhopt_print(const u_char *);
 363 extern int dstopt_print(const u_char *);
 364 extern int frag6_print(const u_char *, const u_char *);
 365 extern int mobility_print(const u_char *, const u_char *);
 366 extern void ripng_print(const u_char *, unsigned int);
 367 extern int rt6_print(const u_char *, const u_char *);
 368 extern void ospf6_print(const u_char *, u_int);
 369 extern void dhcp6_print(const u_char *, u_int);
 370 extern int mask62plen(const u_char *);
 371 #endif /*INET6*/
 372 extern u_short in_cksum(const u_short *, register u_int, int);
 373 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 374
 375 #ifndef HAVE_BPF_DUMP
 376 struct bpf_program;
 377
 378 extern void bpf_dump(const struct bpf_program *, int);
 379
 380 #endif
 381
 382 #include "netdissect.h"
 383
 384 /* forward compatibility */
 385
 386 #ifndef NETDISSECT_REWORKED
 387 extern netdissect_options *gndo;
 388
 389 #define bflag gndo->ndo_bflag
 390 #define eflag gndo->ndo_eflag
 391 #define fflag gndo->ndo_fflag
 392 #define jflag gndo->ndo_jflag
 393 #define Kflag gndo->ndo_Kflag
 394 #define nflag gndo->ndo_nflag
 395 #define Nflag gndo->ndo_Nflag
 396 #define Oflag gndo->ndo_Oflag
 397 #define pflag gndo->ndo_pflag
 398 #define qflag gndo->ndo_qflag
 399 #define Rflag gndo->ndo_Rflag
 400 #define sflag gndo->ndo_sflag
 401 #define Sflag gndo->ndo_Sflag
 402 #define tflag gndo->ndo_tflag
 403 #define Uflag gndo->ndo_Uflag
 404 #define uflag gndo->ndo_uflag
 405 #define vflag gndo->ndo_vflag
 406 #define xflag gndo->ndo_xflag
 407 #define Xflag gndo->ndo_Xflag
 408 #define Cflag gndo->ndo_Cflag
 409 #define Gflag gndo->ndo_Gflag
 410 #define Aflag gndo->ndo_Aflag
 411 #define Bflag gndo->ndo_Bflag
 412 #define Iflag gndo->ndo_Iflag
 413 #define suppress_default_print gndo->ndo_suppress_default_print
 414 #define packettype gndo->ndo_packettype
 415 #define sigsecret gndo->ndo_sigsecret
 416 #define Wflag gndo->ndo_Wflag
 417 #define WflagChars gndo->ndo_WflagChars
 418 #define Cflag_count gndo->ndo_Cflag_count
 419 #define Gflag_count gndo->ndo_Gflag_count
 420 #define Gflag_time gndo->ndo_Gflag_time
 421 #define hflag gndo->ndo_hflag
 422 #define snaplen     gndo->ndo_snaplen
 423 #define snapend     gndo->ndo_snapend
 424
 425 #endif