The Tcpdump Group git mirrors - tcpdump/blob - netdissect.h

   1 /*
   2  * Copyright (c) 1988-1997
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Copyright (c) 1998-2012  Michael Richardson <mcr@tcpdump.org>
   6  *      The TCPDUMP project
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that: (1) source code distributions
  10  * retain the above copyright notice and this paragraph in its entirety, (2)
  11  * distributions including binary code include the above copyright notice and
  12  * this paragraph in its entirety in the documentation or other materials
  13  * provided with the distribution, and (3) all advertising materials mentioning
  14  * features or use of this software display the following acknowledgement:
  15  * ``This product includes software developed by the University of California,
  16  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  17  * the University nor the names of its contributors may be used to endorse
  18  * or promote products derived from this software without specific prior
  19  * written permission.
  20  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  21  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  22  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  23  *
  24  * @(#) $Header: /tcpdump/master/tcpdump/netdissect.h,v 1.27 2008-08-16 11:36:20 hannes Exp $ (LBL)
  25  */
  26
  27 #ifndef netdissect_h
  28 #define netdissect_h
  29
  30 #ifdef HAVE_OS_PROTO_H
  31 #include "os-proto.h"
  32 #endif
  33 #include <sys/types.h>
  34
  35 #ifndef HAVE___ATTRIBUTE__
  36 #define __attribute__(x)
  37 #endif
  38
  39 /* snprintf et al */
  40
  41 #include <stdarg.h>
  42
  43 #if !defined(HAVE_SNPRINTF)
  44 int snprintf (char *str, size_t sz, const char *format, ...)
  45      __attribute__ ((format (printf, 3, 4)));
  46 #endif
  47
  48 #if !defined(HAVE_VSNPRINTF)
  49 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
  50      __attribute__((format (printf, 3, 0)));
  51 #endif
  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 *str);
  62 #endif
  63
  64 #ifndef HAVE_STRSEP
  65 extern char *strsep(char **, const char *);
  66 #endif
  67
  68 struct tok {
  69         int v;                  /* value */
  70         const char *s;          /* string */
  71 };
  72
  73 #define TOKBUFSIZE 128
  74 extern const char *tok2strbuf(const struct tok *, const char *, int,
  75                               char *buf, size_t bufsize);
  76
  77 /* tok2str is deprecated */
  78 extern const char *tok2str(const struct tok *, const char *, int);
  79 extern char *bittok2str(const struct tok *, const char *, int);
  80 extern char *bittok2str_nosep(const struct tok *, const char *, int);
  81
  82
  83 typedef struct netdissect_options netdissect_options;
  84
  85 struct netdissect_options {
  86   int ndo_aflag;                /* translate network and broadcast addresses */
  87   int ndo_bflag;                /* print 4 byte ASes in ASDOT notation */
  88   int ndo_eflag;                /* print ethernet header */
  89   int ndo_fflag;                /* don't translate "foreign" IP address */
  90   int ndo_Kflag;                /* don't check TCP checksums */
  91   int ndo_nflag;                /* leave addresses as numbers */
  92   int ndo_Nflag;                /* remove domains from printed host names */
  93   int ndo_qflag;                /* quick (shorter) output */
  94   int ndo_Rflag;                /* print sequence # field in AH/ESP*/
  95   int ndo_sflag;                /* use the libsmi to translate OIDs */
  96   int ndo_Sflag;                /* print raw TCP sequence numbers */
  97   int ndo_tflag;                /* print packet arrival time */
  98   int ndo_Uflag;                /* "unbuffered" output of dump files */
  99   int ndo_uflag;                /* Print undecoded NFS handles */
 100   int ndo_vflag;                /* verbose */
 101   int ndo_xflag;                /* print packet in hex */
 102   int ndo_Xflag;                /* print packet in hex/ascii */
 103   int ndo_Aflag;                /* print packet only in ascii observing TAB,
 104                                  * LF, CR and SPACE as graphical chars
 105                                  */
 106   int ndo_Bflag;                /* buffer size */
 107   int ndo_Iflag;                /* rfmon (monitor) mode */
 108   int ndo_Oflag;                /* run filter code optimizer */
 109   int ndo_dlt;                  /* if != -1, ask libpcap for the DLT it names*/
 110   int ndo_jflag;                /* packet time stamp source */
 111   int ndo_pflag;                /* don't go promiscuous */
 112
 113   int ndo_Cflag;                /* rotate dump files after this many bytes */
 114   int ndo_Cflag_count;      /* Keep track of which file number we're writing */
 115   int ndo_Gflag;            /* rotate dump files after this many seconds */
 116   int ndo_Gflag_count;      /* number of files created with Gflag rotation */
 117   time_t ndo_Gflag_time;    /* The last time_t the dump file was rotated. */
 118   int ndo_Wflag;          /* recycle output files after this number of files */
 119   int ndo_WflagChars;
 120   int ndo_Hflag;                /* dissect 802.11s draft mesh standard */
 121   int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
 122   const char *ndo_dltname;
 123
 124   char *ndo_espsecret;
 125   struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
 126   struct sa_list *ndo_sa_default;
 127
 128   char *ndo_sigsecret;          /* Signature verification secret key */
 129
 130   struct esp_algorithm *ndo_espsecret_xform;   /* cache of decoded  */
 131   char                 *ndo_espsecret_key;
 132
 133   int   ndo_packettype; /* as specified by -T */
 134
 135   char *ndo_program_name;       /*used to generate self-identifying messages */
 136
 137   int32_t ndo_thiszone; /* seconds offset from gmt to local time */
 138
 139   int   ndo_snaplen;
 140
 141   /*global pointers to beginning and end of current packet (during printing) */
 142   const u_char *ndo_packetp;
 143   const u_char *ndo_snapend;
 144
 145   /* bookkeeping for ^T output */
 146   int ndo_infodelay;
 147
 148   /* pointer to void function to output stuff */
 149   void (*ndo_default_print)(netdissect_options *,
 150                       register const u_char *bp, register u_int length);
 151   void (*ndo_info)(netdissect_options *, int verbose);
 152
 153   int  (*ndo_printf)(netdissect_options *,
 154                      const char *fmt, ...)
 155 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 156                      __attribute__ ((format (printf, 2, 3)))
 157 #endif
 158                      ;
 159   void (*ndo_error)(netdissect_options *,
 160                     const char *fmt, ...)
 161 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 162                      __attribute__ ((noreturn, format (printf, 2, 3)))
 163 #endif
 164                      ;
 165   void (*ndo_warning)(netdissect_options *,
 166                       const char *fmt, ...)
 167 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 168                      __attribute__ ((format (printf, 2, 3)))
 169 #endif
 170                      ;
 171 };
 172
 173 #define PT_VAT          1       /* Visual Audio Tool */
 174 #define PT_WB           2       /* distributed White Board */
 175 #define PT_RPC          3       /* Remote Procedure Call */
 176 #define PT_RTP          4       /* Real-Time Applications protocol */
 177 #define PT_RTCP         5       /* Real-Time Applications control protocol */
 178 #define PT_SNMP         6       /* Simple Network Management Protocol */
 179 #define PT_CNFP         7       /* Cisco NetFlow protocol */
 180 #define PT_TFTP         8       /* trivial file transfer protocol */
 181 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
 182 #define PT_CARP         10      /* Common Address Redundancy Protocol */
 183 #define PT_RADIUS       11      /* RADIUS authentication Protocol */
 184
 185 #ifndef min
 186 #define min(a,b) ((a)>(b)?(b):(a))
 187 #endif
 188 #ifndef max
 189 #define max(a,b) ((b)>(a)?(b):(a))
 190 #endif
 191
 192 /*
 193  * Maximum snapshot length.  This should be enough to capture the full
 194  * packet on most network interfaces.
 195  *
 196  * XXX - could it be larger?  If so, should it?  Some applications might
 197  * use the snapshot length in a savefile header to control the size of
 198  * the buffer they allocate, so a size of, say, 2^31-1 might not work
 199  * well.
 200  */
 201 #define MAXIMUM_SNAPLEN 65535
 202
 203 /*
 204  * The default snapshot length is the maximum.
 205  */
 206 #define DEFAULT_SNAPLEN MAXIMUM_SNAPLEN
 207
 208 #define ESRC(ep) ((ep)->ether_shost)
 209 #define EDST(ep) ((ep)->ether_dhost)
 210
 211 #ifndef NTOHL
 212 #define NTOHL(x)        (x) = ntohl(x)
 213 #define NTOHS(x)        (x) = ntohs(x)
 214 #define HTONL(x)        (x) = htonl(x)
 215 #define HTONS(x)        (x) = htons(x)
 216 #endif
 217
 218 /*
 219  * True if "l" bytes of "var" were captured.
 220  *
 221  * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
 222  * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
 223  *
 224  * The check is for <= rather than < because "l" might be 0.
 225  */
 226 #define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \
 227                         (const u_char *)&(var) <= ndo->ndo_snapend - (l))
 228
 229 /* True if "var" was captured */
 230 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
 231
 232 /* Bail if "l" bytes of "var" were not captured */
 233 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
 234
 235 /* Bail if "var" was not captured */
 236 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
 237
 238 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
 239 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
 240
 241 #if 0
 242 extern void ts_print(netdissect_options *ipdo,
 243                      const struct timeval *);
 244 extern void relts_print(int);
 245 #endif
 246
 247 extern int fn_print(const u_char *, const u_char *);
 248 extern int fn_printn(const u_char *, u_int, const u_char *);
 249 extern const char *tok2str(const struct tok *, const char *, int);
 250
 251 extern void wrapup(int);
 252
 253 #if 0
 254 extern char *read_infile(netdissect_options *, char *);
 255 extern char *copy_argv(netdissect_options *, char **);
 256 #endif
 257
 258 extern void safeputchar(int);
 259 extern void safeputs(const char *, int);
 260
 261 #define PLURAL_SUFFIX(n) \
 262         (((n) != 1) ? "s" : "")
 263
 264 #if 0
 265 extern const char *isonsap_string(netdissect_options *, const u_char *);
 266 extern const char *protoid_string(netdissect_options *, const u_char *);
 267 extern const char *dnname_string(netdissect_options *, u_short);
 268 extern const char *dnnum_string(netdissect_options *, u_short);
 269 #endif
 270
 271 /* The printer routines. */
 272
 273 #include <pcap.h>
 274
 275 typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo,
 276                                 const struct pcap_pkthdr *, const u_char *);
 277 typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *);
 278
 279 extern if_ndo_printer lookup_ndo_printer(int);
 280 extern if_printer lookup_printer(int);
 281
 282 extern void eap_print(netdissect_options *,const u_char *, u_int);
 283 extern int esp_print(netdissect_options *,
 284                      register const u_char *bp, int len, register const u_char *bp2,
 285                      int *nhdr, int *padlen);
 286 extern void arp_print(netdissect_options *,const u_char *, u_int, u_int);
 287 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
 288 extern void icmp6_print(netdissect_options *ndo, const u_char *,
 289                         u_int, const u_char *, int);
 290 extern void isakmp_print(netdissect_options *,const u_char *,
 291                          u_int, const u_char *);
 292 extern void isakmp_rfc3948_print(netdissect_options *,const u_char *,
 293                                  u_int, const u_char *);
 294 extern void ip_print(netdissect_options *,const u_char *, u_int);
 295 extern void ip_print_inner(netdissect_options *ndo,
 296                            const u_char *bp, u_int length, u_int nh,
 297                            const u_char *bp2);
 298 extern void rrcp_print(netdissect_options *,const u_char *, u_int);
 299
 300 extern void ether_print(netdissect_options *,
 301                         const u_char *, u_int, u_int,
 302                         void (*)(netdissect_options *, const u_char *),
 303                         const u_char *);
 304
 305 extern u_int ether_if_print(netdissect_options *,
 306                             const struct pcap_pkthdr *,const u_char *);
 307 extern u_int netanalyzer_if_print(netdissect_options *,
 308                                   const struct pcap_pkthdr *,const u_char *);
 309 extern u_int netanalyzer_transparent_if_print(netdissect_options *,
 310                                               const struct pcap_pkthdr *,
 311                                               const u_char *);
 312
 313 extern int ethertype_print(netdissect_options *,u_short, const u_char *,
 314                              u_int, u_int);
 315
 316 /* stuff that has not yet been rototiled */
 317 #if 0
 318 extern void ascii_print(netdissect_options *,u_int);
 319 extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *,
 320                                     u_int, u_int);
 321 extern void hex_and_ascii_print(netdissect_options *,const char *, u_int);
 322 extern void hex_print_with_offset(netdissect_options *,const char *,
 323                                   u_int, u_int);
 324 extern void hex_print(netdissect_options *,const char *, u_int);
 325 extern void telnet_print(netdissect_options *,const u_char *, u_int);
 326 extern int llc_print(netdissect_options *,
 327                      const u_char *, u_int, u_int, const u_char *,
 328                      const u_char *, u_short *);
 329 extern void aarp_print(netdissect_options *,const u_char *, u_int);
 330 extern void atalk_print(netdissect_options *,const u_char *, u_int);
 331 extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 332 extern void bootp_print(netdissect_options *,const u_char *,
 333                         u_int, u_short, u_short);
 334 extern void bgp_print(netdissect_options *,const u_char *, int);
 335 extern void bxxp_print(netdissect_options *,const u_char *, u_int);
 336 extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
 337                            register const u_char *p);
 338 extern void chdlc_print(netdissect_options *ndo,
 339                         register const u_char *p, u_int length, u_int caplen);
 340 extern void cisco_autorp_print(netdissect_options *,
 341                                const u_char *, u_int);
 342 extern void cnfp_print(netdissect_options *,const u_char *cp,
 343                        u_int len, const u_char *bp);
 344 extern void decnet_print(netdissect_options *,const u_char *,
 345                          u_int, u_int);
 346 extern void default_print(netdissect_options *,const u_char *, u_int);
 347 extern void dvmrp_print(netdissect_options *,const u_char *, u_int);
 348 extern void egp_print(netdissect_options *,const u_char *, u_int,
 349                       const u_char *);
 350
 351 extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *);
 352 extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 353 extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 354
 355 extern void gre_print(netdissect_options *,const u_char *, u_int);
 356 extern void icmp_print(netdissect_options *,const u_char *, u_int,
 357                        const u_char *);
 358 extern void hsrp_print(netdissect_options *ndo,
 359                        register const u_char *bp, register u_int len);
 360 extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 361 extern void igmp_print(netdissect_options *,
 362                        register const u_char *, u_int);
 363 extern void igrp_print(netdissect_options *,const u_char *, u_int,
 364                        const u_char *);
 365 extern int nextproto4_cksum(const struct ip *, const u_int8_t *, u_int, u_int);
 366 extern void ipN_print(netdissect_options *,const u_char *, u_int);
 367 extern void ipx_print(netdissect_options *,const u_char *, u_int);
 368 extern void isoclns_print(netdissect_options *,const u_char *,
 369                           u_int, u_int, const u_char *, const u_char *);
 370 extern void krb_print(netdissect_options *,const u_char *, u_int);
 371 extern void llap_print(netdissect_options *,const u_char *, u_int);
 372 extern const char *linkaddr_string(netdissect_options *ndo,
 373                                    const u_char *ep, const unsigned int len);
 374 extern void ltalk_if_print(netdissect_options *ndo,
 375                            u_char *user, const struct pcap_pkthdr *h,
 376                            const u_char *p);
 377 extern void mpls_print(netdissect_options *ndo,
 378                        const u_char *bp, u_int length);
 379 extern void msdp_print(netdissect_options *ndo,
 380                        const unsigned char *sp, u_int length);
 381 extern void nfsreply_print(netdissect_options *,const u_char *,
 382                            u_int, const u_char *);
 383 extern void nfsreq_print(netdissect_options *,const u_char *,
 384                          u_int, const u_char *);
 385 extern void ns_print(netdissect_options *,const u_char *, u_int);
 386 extern void ntp_print(netdissect_options *,const u_char *, u_int);
 387 extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 388 extern void ospf_print(netdissect_options *,const u_char *,
 389                        u_int, const u_char *);
 390 extern void pimv1_print(netdissect_options *,const u_char *, u_int);
 391 extern void mobile_print(netdissect_options *,const u_char *, u_int);
 392 extern void pim_print(netdissect_options *,const u_char *, u_int, u_int);
 393 extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 394 extern void pppoe_print(netdissect_options *,const u_char *, u_int);
 395 extern void ppp_print(netdissect_options *,
 396                       register const u_char *, u_int);
 397
 398 extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 399 extern void ppp_hdlc_if_print(u_char *,
 400                               const struct pcap_pkthdr *, const u_char *);
 401 extern void ppp_bsdos_if_print(u_char *,
 402                                const struct pcap_pkthdr *, const u_char *);
 403
 404 extern int vjc_print(netdissect_options *,register const char *,
 405                      register u_int, u_short);
 406
 407 extern void raw_if_print(u_char *,
 408                          const struct pcap_pkthdr *, const u_char *);
 409
 410 extern void rip_print(netdissect_options *,const u_char *, u_int);
 411 extern void rpki_rtr_print(netdissect_options *,const u_char *, u_int);
 412
 413 extern void sctp_print(netdissect_options *ndo,
 414                        const u_char *bp, const u_char *bp2,
 415                        u_int sctpPacketLength);
 416
 417 extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
 418
 419 extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 420 extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
 421 extern void sl_bsdos_if_print(u_char *,
 422                               const struct pcap_pkthdr *, const u_char *);
 423 extern void sll_if_print(u_char *,
 424                          const struct pcap_pkthdr *, const u_char *);
 425
 426 extern void snmp_print(netdissect_options *,const u_char *, u_int);
 427 extern void sunrpcrequest_print(netdissect_options *,const u_char *,
 428                                 u_int, const u_char *);
 429 extern void tcp_print(netdissect_options *,const u_char *, u_int,
 430                       const u_char *, int);
 431 extern void tftp_print(netdissect_options *,const u_char *, u_int);
 432 extern void timed_print(netdissect_options *,const u_char *, u_int);
 433 extern void udp_print(netdissect_options *,const u_char *, u_int,
 434                       const u_char *, int);
 435 extern void wb_print(netdissect_options *,const void *, u_int);
 436 extern int ah_print(netdissect_options *,register const u_char *,
 437                     register const u_char *);
 438 extern void esp_print_decodesecret(netdissect_options *ndo);
 439 extern int ipcomp_print(netdissect_options *,register const u_char *,
 440                         register const u_char *, int *);
 441 extern void rx_print(netdissect_options *,register const u_char *,
 442                      int, int, int, u_char *);
 443 extern void netbeui_print(netdissect_options *,u_short,
 444                           const u_char *, int);
 445 extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int);
 446 extern void nbt_tcp_print(netdissect_options *,const u_char *, int);
 447 extern void nbt_udp137_print(netdissect_options *,
 448                              const u_char *data, int);
 449 extern void nbt_udp138_print(netdissect_options *,
 450                              const u_char *data, int);
 451 extern char *smb_errstr(netdissect_options *,int, int);
 452 extern const char *nt_errstr(netdissect_options *, u_int32_t);
 453 extern void print_data(netdissect_options *,const unsigned char *, int);
 454 extern void l2tp_print(netdissect_options *,const u_char *, u_int);
 455 extern void lcp_print(netdissect_options *,const u_char *, u_int);
 456 extern void vrrp_print(netdissect_options *,const u_char *bp,
 457                        u_int len, int ttl);
 458 extern void carp_print(netdissect_options *,const u_char *bp,
 459                        u_int len, int ttl);
 460 extern void cdp_print(netdissect_options *,const u_char *,
 461                       u_int, u_int, const u_char *, const u_char *);
 462 extern void stp_print(netdissect_options *,const u_char *p, u_int length);
 463 extern void radius_print(netdissect_options *,const u_char *, u_int);
 464 extern void lwres_print(netdissect_options *,const u_char *, u_int);
 465 extern void pptp_print(netdissect_options *,const u_char *, u_int);
 466 #endif
 467
 468 extern u_int ipnet_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
 469 extern u_int ppi_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
 470
 471 extern u_int ieee802_15_4_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
 472
 473 #ifdef INET6
 474 extern void ip6_print(netdissect_options *,const u_char *, u_int);
 475 #if 0
 476 extern void ip6_opt_print(netdissect_options *,const u_char *, int);
 477 extern int nextproto6_cksum(const struct ip6_hdr *, const u_int8_t *, u_int, u_int);
 478 extern int hbhopt_print(netdissect_options *,const u_char *);
 479 extern int dstopt_print(netdissect_options *,const u_char *);
 480 extern int frag6_print(netdissect_options *,const u_char *,
 481                        const u_char *);
 482 extern void icmp6_print(netdissect_options *,const u_char *,
 483                         const u_char *);
 484 extern void ripng_print(netdissect_options *,const u_char *, int);
 485 extern int rt6_print(netdissect_options *,const u_char *, const u_char *);
 486 extern void ospf6_print(netdissect_options *,const u_char *, u_int);
 487 extern void dhcp6_print(netdissect_options *,const u_char *,
 488                         u_int, u_int16_t, u_int16_t);
 489
 490 extern void zephyr_print(netdissect_options * ndo,
 491                          const u_char *cp, int length);
 492 #endif /* 0 */
 493
 494 #endif /*INET6*/
 495
 496 #if 0
 497 struct cksum_vec {
 498         const u_int8_t  *ptr;
 499         int             len;
 500 };
 501 extern u_int16_t in_cksum(const struct cksum_vec *, int);
 502 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
 503 #endif
 504
 505 extern void esp_print_decodesecret(netdissect_options *ndo);
 506 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *ndo,
 507                                              int initiator,
 508                                              u_char spii[8], u_char spir[8],
 509                                              u_char *buf, u_char *end);
 510
 511
 512 #endif  /* netdissect_h */