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      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 (at) 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 #ifdef __ATTRIBUTE___FORMAT_OK
     46      __attribute__((format (printf, 3, 4)))
     47 #endif /* __ATTRIBUTE___FORMAT_OK */
     48      ;
     49 #endif /* !defined(HAVE_SNPRINTF) */
     50 
     51 #if !defined(HAVE_VSNPRINTF)
     52 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
     53 #ifdef __ATTRIBUTE___FORMAT_OK
     54      __attribute__((format (printf, 3, 0)))
     55 #endif /* __ATTRIBUTE___FORMAT_OK */
     56      ;
     57 #endif /* !defined(HAVE_SNPRINTF) */
     58 
     59 #ifndef HAVE_STRLCAT
     60 extern size_t strlcat (char *, const char *, size_t);
     61 #endif
     62 #ifndef HAVE_STRLCPY
     63 extern size_t strlcpy (char *, const char *, size_t);
     64 #endif
     65 
     66 #ifndef HAVE_STRDUP
     67 extern char *strdup (const char *str);
     68 #endif
     69 
     70 #ifndef HAVE_STRSEP
     71 extern char *strsep(char **, const char *);
     72 #endif
     73 
     74 struct tok {
     75 	int v;			/* value */
     76 	const char *s;		/* string */
     77 };
     78 
     79 #define TOKBUFSIZE 128
     80 extern const char *tok2strbuf(const struct tok *, const char *, int,
     81 			      char *buf, size_t bufsize);
     82 
     83 /* tok2str is deprecated */
     84 extern const char *tok2str(const struct tok *, const char *, int);
     85 extern char *bittok2str(const struct tok *, const char *, int);
     86 extern char *bittok2str_nosep(const struct tok *, const char *, int);
     87 
     88 
     89 typedef struct netdissect_options netdissect_options;
     90 
     91 struct netdissect_options {
     92   int ndo_aflag;		/* translate network and broadcast addresses */
     93   int ndo_bflag;		/* print 4 byte ASes in ASDOT notation */
     94   int ndo_eflag;		/* print ethernet header */
     95   int ndo_fflag;		/* don't translate "foreign" IP address */
     96   int ndo_Kflag;		/* don't check TCP checksums */
     97   int ndo_nflag;		/* leave addresses as numbers */
     98   int ndo_Nflag;		/* remove domains from printed host names */
     99   int ndo_qflag;		/* quick (shorter) output */
    100   int ndo_Rflag;		/* print sequence # field in AH/ESP*/
    101   int ndo_sflag;		/* use the libsmi to translate OIDs */
    102   int ndo_Sflag;		/* print raw TCP sequence numbers */
    103   int ndo_tflag;		/* print packet arrival time */
    104   int ndo_Uflag;		/* "unbuffered" output of dump files */
    105   int ndo_uflag;		/* Print undecoded NFS handles */
    106   int ndo_vflag;		/* verbose */
    107   int ndo_xflag;		/* print packet in hex */
    108   int ndo_Xflag;		/* print packet in hex/ascii */
    109   int ndo_Aflag;		/* print packet only in ascii observing TAB,
    110 				 * LF, CR and SPACE as graphical chars
    111 				 */
    112   int ndo_Bflag;		/* buffer size */
    113   int ndo_Iflag;		/* rfmon (monitor) mode */
    114   int ndo_Oflag;                /* run filter code optimizer */
    115   int ndo_dlt;                  /* if != -1, ask libpcap for the DLT it names*/
    116   int ndo_jflag;                /* packet time stamp source */
    117   int ndo_pflag;                /* don't go promiscuous */
    118 
    119   int ndo_Cflag;                /* rotate dump files after this many bytes */
    120   int ndo_Cflag_count;      /* Keep track of which file number we're writing */
    121   int ndo_Gflag;            /* rotate dump files after this many seconds */
    122   int ndo_Gflag_count;      /* number of files created with Gflag rotation */
    123   time_t ndo_Gflag_time;    /* The last time_t the dump file was rotated. */
    124   int ndo_Wflag;          /* recycle output files after this number of files */
    125   int ndo_WflagChars;
    126   int ndo_Hflag;		/* dissect 802.11s draft mesh standard */
    127   int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
    128   const char *ndo_dltname;
    129 
    130   char *ndo_espsecret;
    131   struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
    132   struct sa_list *ndo_sa_default;
    133 
    134   char *ndo_sigsecret;     	/* Signature verification secret key */
    135 
    136   struct esp_algorithm *ndo_espsecret_xform;   /* cache of decoded  */
    137   char                 *ndo_espsecret_key;
    138 
    139   int   ndo_packettype;	/* as specified by -T */
    140 
    141   char *ndo_program_name;	/*used to generate self-identifying messages */
    142 
    143   int32_t ndo_thiszone;	/* seconds offset from gmt to local time */
    144 
    145   int   ndo_snaplen;
    146 
    147   /*global pointers to beginning and end of current packet (during printing) */
    148   const u_char *ndo_packetp;
    149   const u_char *ndo_snapend;
    150 
    151   /* bookkeeping for ^T output */
    152   int ndo_infodelay;
    153 
    154   /* pointer to void function to output stuff */
    155   void (*ndo_default_print)(netdissect_options *,
    156   		      register const u_char *bp, register u_int length);
    157   void (*ndo_info)(netdissect_options *, int verbose);
    158 
    159   int  (*ndo_printf)(netdissect_options *,
    160 		     const char *fmt, ...)
    161 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
    162 		     __attribute__ ((format (printf, 2, 3)))
    163 #endif
    164 		     ;
    165   void (*ndo_error)(netdissect_options *,
    166 		    const char *fmt, ...)
    167 #ifdef __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS
    168 		     __attribute__ ((noreturn))
    169 #endif /* __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS */
    170 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
    171 		     __attribute__ ((format (printf, 2, 3)))
    172 #endif /* __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS */
    173 		     ;
    174   void (*ndo_warning)(netdissect_options *,
    175 		      const char *fmt, ...)
    176 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
    177 		     __attribute__ ((format (printf, 2, 3)))
    178 #endif
    179 		     ;
    180 };
    181 
    182 #define PT_VAT		1	/* Visual Audio Tool */
    183 #define PT_WB		2	/* distributed White Board */
    184 #define PT_RPC		3	/* Remote Procedure Call */
    185 #define PT_RTP		4	/* Real-Time Applications protocol */
    186 #define PT_RTCP		5	/* Real-Time Applications control protocol */
    187 #define PT_SNMP		6	/* Simple Network Management Protocol */
    188 #define PT_CNFP		7	/* Cisco NetFlow protocol */
    189 #define PT_TFTP		8	/* trivial file transfer protocol */
    190 #define PT_AODV		9	/* Ad-hoc On-demand Distance Vector Protocol */
    191 #define PT_CARP		10	/* Common Address Redundancy Protocol */
    192 #define PT_RADIUS	11	/* RADIUS authentication Protocol */
    193 #define PT_ZMTP1	12	/* ZeroMQ Message Transport Protocol 1.0 */
    194 #define PT_VXLAN	13	/* Virtual eXtensible Local Area Network */
    195 #define PT_PGM		14	/* [UDP-encapsulated] Pragmatic General Multicast */
    196 #define PT_PGM_ZMTP1	15	/* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
    197 #define PT_LMP		16	/* Link Management Protocol */
    198 
    199 #ifndef min
    200 #define min(a,b) ((a)>(b)?(b):(a))
    201 #endif
    202 #ifndef max
    203 #define max(a,b) ((b)>(a)?(b):(a))
    204 #endif
    205 
    206 /*
    207  * Maximum snapshot length.  This should be enough to capture the full
    208  * packet on most network interfaces.
    209  *
    210  * XXX - could it be larger?  If so, should it?  Some applications might
    211  * use the snapshot length in a savefile header to control the size of
    212  * the buffer they allocate, so a size of, say, 2^31-1 might not work
    213  * well.
    214  */
    215 #define MAXIMUM_SNAPLEN	65535
    216 
    217 /*
    218  * The default snapshot length is the maximum.
    219  */
    220 #define DEFAULT_SNAPLEN	MAXIMUM_SNAPLEN
    221 
    222 #define ESRC(ep) ((ep)->ether_shost)
    223 #define EDST(ep) ((ep)->ether_dhost)
    224 
    225 #ifndef NTOHL
    226 #define NTOHL(x)	(x) = ntohl(x)
    227 #define NTOHS(x)	(x) = ntohs(x)
    228 #define HTONL(x)	(x) = htonl(x)
    229 #define HTONS(x)	(x) = htons(x)
    230 #endif
    231 
    232 /*
    233  * True if "l" bytes of "var" were captured.
    234  *
    235  * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
    236  * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
    237  *
    238  * The check is for <= rather than < because "l" might be 0.
    239  */
    240 #define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \
    241 			(const u_char *)&(var) <= ndo->ndo_snapend - (l))
    242 
    243 /* True if "var" was captured */
    244 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
    245 
    246 /* Bail if "l" bytes of "var" were not captured */
    247 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
    248 
    249 /* Bail if "var" was not captured */
    250 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
    251 
    252 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
    253 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
    254 
    255 #if 0
    256 extern void ts_print(netdissect_options *ipdo,
    257 		     const struct timeval *);
    258 extern void relts_print(int);
    259 #endif
    260 
    261 extern int fn_print(const u_char *, const u_char *);
    262 extern int fn_printn(const u_char *, u_int, const u_char *);
    263 extern const char *tok2str(const struct tok *, const char *, int);
    264 
    265 extern void wrapup(int);
    266 
    267 #if 0
    268 extern char *read_infile(netdissect_options *, char *);
    269 extern char *copy_argv(netdissect_options *, char **);
    270 #endif
    271 
    272 /*
    273  * Locale-independent macros for testing character properties and
    274  * stripping the 8th bit from characters.  Assumed to be handed
    275  * a value between 0 and 255, i.e. don't hand them a char, as
    276  * those might be in the range -128 to 127.
    277  */
    278 #define ND_ISASCII(c)	(!((c) & 0x80))	/* value is an ASCII code point */
    279 #define ND_ISPRINT(c)	((c) >= 0x20 && (c) <= 0x7E)
    280 #define ND_ISGRAPH(c)	((c) > 0x20 && (c) <= 0x7E)
    281 #define ND_TOASCII(c)	((c) & 0x7F)
    282 
    283 extern void safeputchar(int);
    284 extern void safeputs(const char *, int);
    285 
    286 #ifdef LBL_ALIGN
    287 /*
    288  * The processor doesn't natively handle unaligned loads,
    289  * and the compiler might "helpfully" optimize memcpy()
    290  * and memcmp(), when handed pointers that would normally
    291  * be properly aligned, into sequences that assume proper
    292  * alignment.
    293  *
    294  * Do copies and compares of possibly-unaligned data by
    295  * calling routines that wrap memcpy() and memcmp(), to
    296  * prevent that optimization.
    297  */
    298 extern void unaligned_memcpy(void *, const void *, size_t);
    299 extern int unaligned_memcmp(const void *, const void *, size_t);
    300 #define UNALIGNED_MEMCPY(p, q, l)	unaligned_memcpy((p), (q), (l))
    301 #define UNALIGNED_MEMCMP(p, q, l)	unaligned_memcmp((p), (q), (l))
    302 #else
    303 /*
    304  * The procesor natively handles unaligned loads, so just use memcpy()
    305  * and memcmp(), to enable those optimizations.
    306  */
    307 #define UNALIGNED_MEMCPY(p, q, l)	memcpy((p), (q), (l))
    308 #define UNALIGNED_MEMCMP(p, q, l)	memcmp((p), (q), (l))
    309 #endif
    310 
    311 #define PLURAL_SUFFIX(n) \
    312 	(((n) != 1) ? "s" : "")
    313 
    314 #if 0
    315 extern const char *isonsap_string(netdissect_options *, const u_char *);
    316 extern const char *protoid_string(netdissect_options *, const u_char *);
    317 extern const char *dnname_string(netdissect_options *, u_short);
    318 extern const char *dnnum_string(netdissect_options *, u_short);
    319 #endif
    320 
    321 /* The printer routines. */
    322 
    323 #include <pcap.h>
    324 
    325 typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo,
    326 				const struct pcap_pkthdr *, const u_char *);
    327 typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *);
    328 
    329 extern if_ndo_printer lookup_ndo_printer(int);
    330 extern if_printer lookup_printer(int);
    331 
    332 extern void eap_print(netdissect_options *,const u_char *, u_int);
    333 extern int esp_print(netdissect_options *,
    334 		     register const u_char *bp, int len, register const u_char *bp2,
    335 		     int *nhdr, int *padlen);
    336 extern void arp_print(netdissect_options *,const u_char *, u_int, u_int);
    337 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
    338 extern void msnlb_print(netdissect_options *, const u_char *);
    339 extern void icmp6_print(netdissect_options *ndo, const u_char *,
    340                         u_int, const u_char *, int);
    341 extern void isakmp_print(netdissect_options *,const u_char *,
    342 			 u_int, const u_char *);
    343 extern void isakmp_rfc3948_print(netdissect_options *,const u_char *,
    344 				 u_int, const u_char *);
    345 extern void ip_print(netdissect_options *,const u_char *, u_int);
    346 extern void ip_print_inner(netdissect_options *ndo,
    347 			   const u_char *bp, u_int length, u_int nh,
    348 			   const u_char *bp2);
    349 extern void rrcp_print(netdissect_options *,const u_char *, u_int);
    350 
    351 extern void ether_print(netdissect_options *,
    352                         const u_char *, u_int, u_int,
    353                         void (*)(netdissect_options *, const u_char *),
    354                         const u_char *);
    355 
    356 extern u_int ether_if_print(netdissect_options *,
    357                             const struct pcap_pkthdr *,const u_char *);
    358 extern u_int netanalyzer_if_print(netdissect_options *,
    359                                   const struct pcap_pkthdr *,const u_char *);
    360 extern u_int netanalyzer_transparent_if_print(netdissect_options *,
    361                                               const struct pcap_pkthdr *,
    362                                               const u_char *);
    363 
    364 extern int ethertype_print(netdissect_options *,u_short, const u_char *,
    365 			     u_int, u_int);
    366 
    367 /* stuff that has not yet been rototiled */
    368 #if 0
    369 extern void ascii_print(netdissect_options *,u_int);
    370 extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *,
    371 				    u_int, u_int);
    372 extern void hex_and_ascii_print(netdissect_options *,const char *, u_int);
    373 extern void hex_print_with_offset(netdissect_options *,const char *,
    374 				  u_int, u_int);
    375 extern void hex_print(netdissect_options *,const char *, u_int);
    376 extern void telnet_print(netdissect_options *,const u_char *, u_int);
    377 extern int llc_print(netdissect_options *,
    378 		     const u_char *, u_int, u_int, const u_char *,
    379 		     const u_char *, u_short *);
    380 extern void aarp_print(netdissect_options *,const u_char *, u_int);
    381 extern void atalk_print(netdissect_options *,const u_char *, u_int);
    382 extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    383 extern void bootp_print(netdissect_options *,const u_char *,
    384 			u_int, u_short, u_short);
    385 extern void bgp_print(netdissect_options *,const u_char *, int);
    386 extern void bxxp_print(netdissect_options *,const u_char *, u_int);
    387 extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
    388 			   register const u_char *p);
    389 extern void chdlc_print(netdissect_options *ndo,
    390 			register const u_char *p, u_int length, u_int caplen);
    391 extern void cisco_autorp_print(netdissect_options *,
    392 			       const u_char *, u_int);
    393 extern void cnfp_print(netdissect_options *,const u_char *cp,
    394 		       u_int len, const u_char *bp);
    395 extern void decnet_print(netdissect_options *,const u_char *,
    396 			 u_int, u_int);
    397 extern void default_print(netdissect_options *,const u_char *, u_int);
    398 extern void dvmrp_print(netdissect_options *,const u_char *, u_int);
    399 extern void egp_print(netdissect_options *,const u_char *, u_int,
    400 		      const u_char *);
    401 
    402 extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *);
    403 extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
    404 extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    405 
    406 extern void gre_print(netdissect_options *,const u_char *, u_int);
    407 extern void icmp_print(netdissect_options *,const u_char *, u_int,
    408 		       const u_char *);
    409 extern void hsrp_print(netdissect_options *ndo,
    410 		       register const u_char *bp, register u_int len);
    411 extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    412 extern void igmp_print(netdissect_options *,
    413 		       register const u_char *, u_int);
    414 extern void igrp_print(netdissect_options *,const u_char *, u_int,
    415 		       const u_char *);
    416 extern int nextproto4_cksum(const struct ip *, const u_int8_t *, u_int, u_int);
    417 extern void ipN_print(netdissect_options *,const u_char *, u_int);
    418 extern void ipx_print(netdissect_options *,const u_char *, u_int);
    419 extern void isoclns_print(netdissect_options *,const u_char *,
    420 			  u_int, u_int, const u_char *,	const u_char *);
    421 extern void krb_print(netdissect_options *,const u_char *, u_int);
    422 extern void llap_print(netdissect_options *,const u_char *, u_int);
    423 extern const char *linkaddr_string(netdissect_options *ndo,
    424 				   const u_char *ep, const unsigned int len);
    425 extern void ltalk_if_print(netdissect_options *ndo,
    426 			   u_char *user, const struct pcap_pkthdr *h,
    427 			   const u_char *p);
    428 extern void mpls_print(netdissect_options *ndo,
    429 		       const u_char *bp, u_int length);
    430 extern void msdp_print(netdissect_options *ndo,
    431 		       const unsigned char *sp, u_int length);
    432 extern void nfsreply_print(netdissect_options *,const u_char *,
    433 			   u_int, const u_char *);
    434 extern void nfsreq_print(netdissect_options *,const u_char *,
    435 			 u_int, const u_char *);
    436 extern void ns_print(netdissect_options *,const u_char *, u_int);
    437 extern void ntp_print(netdissect_options *,const u_char *, u_int);
    438 extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    439 extern void ospf_print(netdissect_options *,const u_char *,
    440 		       u_int, const u_char *);
    441 extern void pimv1_print(netdissect_options *,const u_char *, u_int);
    442 extern void mobile_print(netdissect_options *,const u_char *, u_int);
    443 extern void pim_print(netdissect_options *,const u_char *, u_int, u_int);
    444 extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    445 extern void pppoe_print(netdissect_options *,const u_char *, u_int);
    446 extern void ppp_print(netdissect_options *,
    447 		      register const u_char *, u_int);
    448 
    449 extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    450 extern void ppp_hdlc_if_print(u_char *,
    451 			      const struct pcap_pkthdr *, const u_char *);
    452 extern void ppp_bsdos_if_print(u_char *,
    453 			       const struct pcap_pkthdr *, const u_char *);
    454 
    455 extern int vjc_print(netdissect_options *,register const char *,
    456 		     register u_int, u_short);
    457 
    458 extern void raw_if_print(u_char *,
    459 			 const struct pcap_pkthdr *, const u_char *);
    460 
    461 extern void rip_print(netdissect_options *,const u_char *, u_int);
    462 extern void rpki_rtr_print(netdissect_options *,const u_char *, u_int);
    463 
    464 extern void sctp_print(netdissect_options *ndo,
    465 		       const u_char *bp, const u_char *bp2,
    466 		       u_int sctpPacketLength);
    467 
    468 extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *);
    469 
    470 extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
    471 extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *);
    472 extern void sl_bsdos_if_print(u_char *,
    473 			      const struct pcap_pkthdr *, const u_char *);
    474 extern void sll_if_print(u_char *,
    475 			 const struct pcap_pkthdr *, const u_char *);
    476 
    477 extern void snmp_print(netdissect_options *,const u_char *, u_int);
    478 extern void sunrpcrequest_print(netdissect_options *,const u_char *,
    479 				u_int, const u_char *);
    480 extern void tcp_print(netdissect_options *,const u_char *, u_int,
    481 		      const u_char *, int);
    482 extern void tftp_print(netdissect_options *,const u_char *, u_int);
    483 extern void timed_print(netdissect_options *,const u_char *, u_int);
    484 extern void udp_print(netdissect_options *,const u_char *, u_int,
    485 		      const u_char *, int);
    486 extern void wb_print(netdissect_options *,const void *, u_int);
    487 extern int ah_print(netdissect_options *,register const u_char *,
    488 		    register const u_char *);
    489 extern void esp_print_decodesecret(netdissect_options *ndo);
    490 extern int ipcomp_print(netdissect_options *,register const u_char *,
    491 			register const u_char *, int *);
    492 extern void rx_print(netdissect_options *,register const u_char *,
    493 		     int, int, int, u_char *);
    494 extern void netbeui_print(netdissect_options *,u_short,
    495 			  const u_char *, int);
    496 extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int);
    497 extern void nbt_tcp_print(netdissect_options *,const u_char *, int);
    498 extern void nbt_udp137_print(netdissect_options *,
    499 			     const u_char *data, int);
    500 extern void nbt_udp138_print(netdissect_options *,
    501 			     const u_char *data, int);
    502 extern char *smb_errstr(netdissect_options *,int, int);
    503 extern const char *nt_errstr(netdissect_options *, u_int32_t);
    504 extern void print_data(netdissect_options *,const unsigned char *, int);
    505 extern void l2tp_print(netdissect_options *,const u_char *, u_int);
    506 extern void lcp_print(netdissect_options *,const u_char *, u_int);
    507 extern void vrrp_print(netdissect_options *,const u_char *bp,
    508 		       u_int len, int ttl);
    509 extern void carp_print(netdissect_options *,const u_char *bp,
    510 		       u_int len, int ttl);
    511 extern void cdp_print(netdissect_options *,const u_char *,
    512 		      u_int, u_int, const u_char *, const u_char *);
    513 extern void stp_print(netdissect_options *,const u_char *p, u_int length);
    514 extern void radius_print(netdissect_options *,const u_char *, u_int);
    515 extern void lwres_print(netdissect_options *,const u_char *, u_int);
    516 extern void pptp_print(netdissect_options *,const u_char *, u_int);
    517 #endif
    518 
    519 extern u_int ipnet_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
    520 extern u_int ppi_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
    521 extern u_int nflog_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
    522 extern u_int ieee802_15_4_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *);
    523 
    524 #ifdef INET6
    525 extern void ip6_print(netdissect_options *,const u_char *, u_int);
    526 #if 0
    527 extern void ip6_opt_print(netdissect_options *,const u_char *, int);
    528 extern int nextproto6_cksum(const struct ip6_hdr *, const u_int8_t *, u_int, u_int);
    529 extern int hbhopt_print(netdissect_options *,const u_char *);
    530 extern int dstopt_print(netdissect_options *,const u_char *);
    531 extern int frag6_print(netdissect_options *,const u_char *,
    532 		       const u_char *);
    533 extern void icmp6_print(netdissect_options *,const u_char *,
    534 			const u_char *);
    535 extern void ripng_print(netdissect_options *,const u_char *, int);
    536 extern int rt6_print(netdissect_options *,const u_char *, const u_char *);
    537 extern void ospf6_print(netdissect_options *,const u_char *, u_int);
    538 extern void dhcp6_print(netdissect_options *,const u_char *,
    539 			u_int, u_int16_t, u_int16_t);
    540 
    541 extern void zephyr_print(netdissect_options * ndo,
    542 			 const u_char *cp, int length);
    543 #endif /* 0 */
    544 
    545 #endif /*INET6*/
    546 
    547 #if 0
    548 struct cksum_vec {
    549 	const u_int8_t	*ptr;
    550 	int		len;
    551 };
    552 extern u_int16_t in_cksum(const struct cksum_vec *, int);
    553 extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
    554 #endif
    555 
    556 extern void esp_print_decodesecret(netdissect_options *ndo);
    557 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *ndo,
    558 					     int initiator,
    559 					     u_char spii[8], u_char spir[8],
    560 					     u_char *buf, u_char *end);
    561 
    562 
    563 extern void geonet_print(netdissect_options *ndo,const u_char *eth_hdr,const u_char *geo_pck, u_int len);
    564 extern void calm_fast_print(netdissect_options *ndo,const u_char *eth_hdr,const u_char *calm_pck, u_int len);
    565 
    566 #endif  /* netdissect_h */
    567