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
  22 #ifndef tcpdump_interface_h
  23 #define tcpdump_interface_h
  24
  25 #ifdef HAVE_OS_PROTO_H
  26 #include "os-proto.h"
  27 #endif
  28
  29 /* snprintf et al */
  30
  31 #include <stdarg.h>
  32
  33 #if HAVE_STDINT_H
  34 #include <stdint.h>
  35 #endif
  36
  37 #if !defined(HAVE_SNPRINTF)
  38 int snprintf(char *, size_t, const char *, ...)
  39 #ifdef __ATTRIBUTE___FORMAT_OK
  40      __attribute__((format(printf, 3, 4)))
  41 #endif /* __ATTRIBUTE___FORMAT_OK */
  42      ;
  43 #endif /* !defined(HAVE_SNPRINTF) */
  44
  45 #if !defined(HAVE_VSNPRINTF)
  46 int vsnprintf(char *, size_t, const char *, va_list)
  47 #ifdef __ATTRIBUTE___FORMAT_OK
  48      __attribute__((format(printf, 3, 0)))
  49 #endif /* __ATTRIBUTE___FORMAT_OK */
  50      ;
  51 #endif /* !defined(HAVE_VSNPRINTF) */
  52
  53 #ifndef HAVE_STRLCAT
  54 extern size_t strlcat(char *, const char *, size_t);
  55 #endif
  56 #ifndef HAVE_STRLCPY
  57 extern size_t strlcpy(char *, const char *, size_t);
  58 #endif
  59
  60 #ifndef HAVE_STRDUP
  61 extern char *strdup(const char *);
  62 #endif
  63
  64 #ifndef HAVE_STRSEP
  65 extern char *strsep(char **, const char *);
  66 #endif
  67
  68 #define PT_VAT          1       /* Visual Audio Tool */
  69 #define PT_WB           2       /* distributed White Board */
  70 #define PT_RPC          3       /* Remote Procedure Call */
  71 #define PT_RTP          4       /* Real-Time Applications protocol */
  72 #define PT_RTCP         5       /* Real-Time Applications control protocol */
  73 #define PT_SNMP         6       /* Simple Network Management Protocol */
  74 #define PT_CNFP         7       /* Cisco NetFlow protocol */
  75 #define PT_TFTP         8       /* trivial file transfer protocol */
  76 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
  77 #define PT_CARP         10      /* Common Address Redundancy Protocol */
  78 #define PT_RADIUS       11      /* RADIUS authentication Protocol */
  79 #define PT_ZMTP1        12      /* ZeroMQ Message Transport Protocol 1.0 */
  80 #define PT_VXLAN        13      /* Virtual eXtensible Local Area Network */
  81 #define PT_PGM          14      /* [UDP-encapsulated] Pragmatic General Multicast */
  82 #define PT_PGM_ZMTP1    15      /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
  83 #define PT_LMP          16      /* Link Management Protocol */
  84
  85 #ifndef min
  86 #define min(a,b) ((a)>(b)?(b):(a))
  87 #endif
  88 #ifndef max
  89 #define max(a,b) ((b)>(a)?(b):(a))
  90 #endif
  91
  92 #define ESRC(ep) ((ep)->ether_shost)
  93 #define EDST(ep) ((ep)->ether_dhost)
  94
  95 #ifndef NTOHL
  96 #define NTOHL(x)        (x) = ntohl(x)
  97 #define NTOHS(x)        (x) = ntohs(x)
  98 #define HTONL(x)        (x) = htonl(x)
  99 #define HTONS(x)        (x) = htons(x)
 100 #endif
 101 #endif
 102
 103 #ifndef MIN
 104 #define MIN(a,b) ((a)<(b)?(a):(b))
 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 fn_printzp(const u_char *, u_int, const u_char *);
 137 extern int mask2plen(u_int32_t);
 138 extern const char *tok2strary_internal(const char **, int, const char *, int);
 139 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 140
 141 extern const char *dnaddr_string(u_short);
 142
 143 extern void error(const char *, ...)
 144      __attribute__((noreturn))
 145 #ifdef __ATTRIBUTE___FORMAT_OK
 146      __attribute__((format (printf, 1, 2)))
 147 #endif /* __ATTRIBUTE___FORMAT_OK */
 148      ;
 149 extern void warning(const char *, ...)
 150 #ifdef __ATTRIBUTE___FORMAT_OK
 151      __attribute__((format (printf, 1, 2)))
 152 #endif /* __ATTRIBUTE___FORMAT_OK */
 153      ;
 154
 155 extern char *read_infile(char *);
 156 extern char *copy_argv(char **);
 157
 158 extern void safeputchar(int);
 159 extern void safeputs(const char *, int);
 160
 161 extern const char *isonsap_string(const u_char *, register u_int);
 162 extern const char *protoid_string(const u_char *);
 163 extern const char *ipxsap_string(u_short);
 164 extern const char *dnname_string(u_short);
 165 extern const char *dnnum_string(u_short);
 166
 167 /* checksum routines */
 168 extern void init_checksum(void);
 169 extern u_int16_t verify_crc10_cksum(u_int16_t, const u_char *, int);
 170 extern u_int16_t create_osi_cksum(const u_int8_t *, int, int);
 171
 172 /* The printer routines. */
 173
 174 #include <pcap.h>
 175
 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 telnet_print(const u_char *, u_int);
 181 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 182         const u_char *, u_short *);
 183 extern int snap_print(const u_char *, u_int, u_int, u_int);
 184 extern void aarp_print(const u_char *, u_int);
 185 extern void aodv_print(const u_char *, u_int, int);
 186 extern void atalk_print(const u_char *, u_int);
 187 extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
 188 extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
 189 extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
 190 extern int oam_print(const u_char *, u_int, u_int);
 191 extern void bootp_print(const u_char *, u_int);
 192 extern void bgp_print(const u_char *, int);
 193 extern void cnfp_print(const u_char *, const u_char *);
 194 extern void decnet_print(const u_char *, u_int, u_int);
 195 extern void default_print(const u_char *, u_int);
 196 extern void dvmrp_print(const u_char *, u_int);
 197 extern void egp_print(const u_char *, u_int);
 198 extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
 199 extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
 200 extern u_int token_print(const u_char *, u_int, u_int);
 201 extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
 202 extern void fddi_print(const u_char *, u_int, u_int);
 203 extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
 204 extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
 205 extern u_int mfr_if_print(const struct pcap_pkthdr *, const u_char *);
 206 extern u_int fr_print(register const u_char *, u_int);
 207 extern u_int mfr_print(register const u_char *, u_int);
 208 extern char *q922_string(const u_char *);
 209 extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
 210 extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
 211         const u_char *);
 212 extern u_int ieee802_11_radio_avs_if_print(const struct pcap_pkthdr *,
 213         const u_char *);
 214 extern void icmp_print(const u_char *, u_int, const u_char *, int);
 215 extern void igmp_print(const u_char *, u_int);
 216 extern void ipN_print(const u_char *, u_int);
 217 extern void ipx_print(const u_char *, u_int);
 218 extern void isoclns_print(const u_char *, u_int, u_int);
 219 extern void krb_print(const u_char *);
 220 extern u_int llap_print(const u_char *, u_int);
 221 extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
 222 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 223 extern void nfsreply_print_noaddr(const u_char *, u_int, const u_char *);
 224 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 225 extern void nfsreq_print_noaddr(const u_char *, u_int, const u_char *);
 226 extern void ns_print(const u_char *, u_int, int);
 227 extern const u_char * ns_nprint (register const u_char *, register const u_char *);
 228 extern void ntp_print(const u_char *, u_int);
 229 extern void openflow_print(const u_char *, const u_int);
 230 extern void ospf_print(const u_char *, u_int, const u_char *);
 231 extern void olsr_print (const u_char *, u_int, int);
 232 extern void pimv1_print(const u_char *, u_int);
 233 extern void cisco_autorp_print(const u_char *, u_int);
 234 extern void rsvp_print(const u_char *, u_int);
 235 extern void ldp_print(const u_char *, u_int);
 236 extern void lldp_print(const u_char *, u_int);
 237 extern void rpki_rtr_print(const u_char *, u_int);
 238 extern void lmp_print(const u_char *, u_int);
 239 extern void lspping_print(const u_char *, u_int);
 240 extern void lwapp_control_print(const u_char *, u_int, int);
 241 extern void lwapp_data_print(const u_char *, u_int);
 242 extern void eigrp_print(const u_char *, u_int);
 243 extern void pim_print(const u_char *, u_int, u_int);
 244 extern u_int pppoe_print(const u_char *, u_int);
 245 extern u_int ppp_print(register const u_char *, u_int);
 246 extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
 247 extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 248 extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 249 extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
 250 extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
 251 extern void q933_print(const u_char *, u_int);
 252 extern int vjc_print(register const char *, u_short);
 253 extern void vqp_print(register const u_char *, register u_int);
 254 extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);
 255 extern void rip_print(const u_char *, u_int);
 256 extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
 257 extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
 258 extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
 259 extern u_int chdlc_print(register const u_char *, u_int);
 260 extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
 261 extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
 262 extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
 263 extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
 264 extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
 265 extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
 266 extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
 267 extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
 268 extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
 269 extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
 270 extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
 271 extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
 272 extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
 273 extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
 274 extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
 275 extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);
 276 extern void snmp_print(const u_char *, u_int);
 277 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 278 extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
 279 extern void tcp_print(const u_char *, u_int, const u_char *, int);
 280 extern void tftp_print(const u_char *, u_int);
 281 extern void timed_print(const u_char *);
 282 extern void udp_print(const u_char *, u_int, const u_char *, int);
 283 extern void vtp_print(const u_char *, u_int);
 284 extern void wb_print(const void *, u_int);
 285 extern void rx_print(register const u_char *, int, int, int, u_char *);
 286 extern void netbeui_print(u_short, const u_char *, int);
 287 extern void ipx_netbios_print(const u_char *, u_int);
 288 extern void nbt_tcp_print(const u_char *, int);
 289 extern void nbt_udp137_print(const u_char *, int);
 290 extern void nbt_udp138_print(const u_char *, int);
 291 extern void smb_tcp_print(const u_char *, int);
 292 extern char *smb_errstr(int, int);
 293 extern const char *nt_errstr(u_int32_t);
 294 extern void print_data(const unsigned char *, int);
 295 extern void l2tp_print(const u_char *, u_int);
 296 extern void vrrp_print(const u_char *, u_int, const u_char *, int);
 297 extern void slow_print(const u_char *, u_int);
 298 extern void sflow_print(const u_char *, u_int);
 299 extern void mpcp_print(const u_char *, u_int);
 300 extern void cfm_print(const u_char *, u_int);
 301 extern void pgm_print(const u_char *, u_int, const u_char *);
 302 extern void cdp_print(const u_char *, u_int, u_int);
 303 extern void stp_print(const u_char *, u_int);
 304 extern void radius_print(const u_char *, u_int);
 305 extern void lwres_print(const u_char *, u_int);
 306 extern void pptp_print(const u_char *);
 307 extern void dccp_print(const u_char *, const u_char *, u_int);
 308 extern void sctp_print(const u_char *, const u_char *, u_int);
 309 extern void forces_print(const u_char *, u_int);
 310 extern void mpls_print(const u_char *, u_int);
 311 extern void mpls_lsp_ping_print(const u_char *, u_int);
 312 extern void zephyr_print(const u_char *, int);
 313 extern void zmtp1_print(const u_char *, u_int);
 314 extern void zmtp1_print_datagram(const u_char *, const u_int);
 315 extern void sip_print(const u_char *, u_int);
 316 extern void syslog_print(const u_char *, u_int);
 317 extern int mptcp_print(const u_char *, u_int, u_char);
 318 extern u_int usb_linux_48_byte_print(const struct pcap_pkthdr *, const u_char *);
 319 extern u_int usb_linux_64_byte_print(const struct pcap_pkthdr *, const u_char *);
 320
 321
 322 #ifdef INET6
 323 extern void ip6_opt_print(const u_char *, int);
 324 extern int hbhopt_print(const u_char *);
 325 extern int dstopt_print(const u_char *);
 326 extern int mobility_print(const u_char *, const u_char *);
 327 extern void ripng_print(const u_char *, unsigned int);
 328 extern int rt6_print(const u_char *, const u_char *);
 329 extern void ospf6_print(const u_char *, u_int);
 330 extern void dhcp6_print(const u_char *, u_int);
 331 extern void babel_print(const u_char *, u_int);
 332 extern int mask62plen(const u_char *);
 333 #endif /*INET6*/
 334
 335 struct cksum_vec {
 336         const u_int8_t  *ptr;
 337         int             len;
 338 };
 339 extern u_int16_t in_cksum(const struct cksum_vec *, int);
 340 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 341 extern int decode_prefix4(const u_char *, u_int, char *, u_int);
 342 #ifdef INET6
 343 extern int decode_prefix6(const u_char *, u_int, char *, u_int);
 344 #endif
 345
 346 #ifndef HAVE_BPF_DUMP
 347 struct bpf_program;
 348
 349 extern void bpf_dump(const struct bpf_program *, int);
 350
 351 #endif
 352
 353 #include "netdissect.h"
 354
 355 /* forward compatibility */
 356
 357 #ifndef NETDISSECT_REWORKED
 358 extern netdissect_options *gndo;
 359
 360 #define bflag gndo->ndo_bflag
 361 #define eflag gndo->ndo_eflag
 362 #define fflag gndo->ndo_fflag
 363 #define jflag gndo->ndo_jflag
 364 #define Kflag gndo->ndo_Kflag
 365 #define nflag gndo->ndo_nflag
 366 #define Nflag gndo->ndo_Nflag
 367 #define Oflag gndo->ndo_Oflag
 368 #define pflag gndo->ndo_pflag
 369 #define qflag gndo->ndo_qflag
 370 #define Rflag gndo->ndo_Rflag
 371 #define sflag gndo->ndo_sflag
 372 #define Sflag gndo->ndo_Sflag
 373 #define tflag gndo->ndo_tflag
 374 #define Uflag gndo->ndo_Uflag
 375 #define uflag gndo->ndo_uflag
 376 #define vflag gndo->ndo_vflag
 377 #define xflag gndo->ndo_xflag
 378 #define Xflag gndo->ndo_Xflag
 379 #define Cflag gndo->ndo_Cflag
 380 #define Gflag gndo->ndo_Gflag
 381 #define Aflag gndo->ndo_Aflag
 382 #define Bflag gndo->ndo_Bflag
 383 #define Iflag gndo->ndo_Iflag
 384 #define suppress_default_print gndo->ndo_suppress_default_print
 385 #define packettype gndo->ndo_packettype
 386 #define sigsecret gndo->ndo_sigsecret
 387 #define Wflag gndo->ndo_Wflag
 388 #define WflagChars gndo->ndo_WflagChars
 389 #define Cflag_count gndo->ndo_Cflag_count
 390 #define Gflag_count gndo->ndo_Gflag_count
 391 #define Gflag_time gndo->ndo_Gflag_time
 392 #define Hflag gndo->ndo_Hflag
 393 #define snaplen     gndo->ndo_snaplen
 394 #define snapend     gndo->ndo_snapend
 395
 396 #endif