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
25#ifndef netdissect_h
26#define netdissect_h
27
28#ifdef HAVE_OS_PROTO_H
29#include "os-proto.h"
30#endif
31#include <sys/types.h>
32
33#ifndef HAVE___ATTRIBUTE__
34#define __attribute__(x)
35#endif
36
37/*
38 * Data types corresponding to multi-byte integral values within data
39 * structures.  These are defined as arrays of octets, so that they're
40 * not aligned on their "natural" boundaries, and so that you *must*
41 * use the EXTRACT_ macros to extract them (which you should be doing
42 * *anyway*, so as not to assume a particular byte order or alignment
43 * in your code).
44 */
45typedef unsigned char nd_uint16_t[2];
46typedef unsigned char nd_uint24_t[3];
47typedef unsigned char nd_uint32_t[4];
48typedef unsigned char nd_uint40_t[5];
49typedef unsigned char nd_uint48_t[6];
50typedef unsigned char nd_uint56_t[7];
51typedef unsigned char nd_uint64_t[8];
52
53/*
54 * Use this for IPv4 addresses.  It's defined as an array of octets, so
55 * that it's not aligned on its "natural" boundary, and it's defined as
56 * a structure in the hopes that this makes it harder to naively use
57 * EXTRACT_32BITS() to extract the value - in many cases you just want
58 * to use UNALIGNED_MEMCPY() to copy its value, so that it remains in
59 * network byte order.
60 */
61typedef struct {
62	unsigned char bytes[4];
63} nd_ipv4;
64
65/*
66 * Data types corresponding to single-byte integral values, for
67 * completeness.
68 */
69typedef unsigned char nd_uint8_t;
70typedef signed char nd_int8_t;
71
72/* snprintf et al */
73
74#include <stdarg.h>
75#include <pcap.h>
76
77#include "ip.h" /* struct ip for nextproto4_cksum() */
78#include "ip6.h" /* struct ip6 for nextproto6_cksum() */
79
80extern int32_t thiszone;	/* seconds offset from gmt to local time */
81/* invalid string to print '(invalid)' for malformed or corrupted packets */
82extern const char istr[];
83
84#if !defined(HAVE_SNPRINTF)
85int snprintf (char *str, size_t sz, FORMAT_STRING(const char *format), ...)
86     PRINTFLIKE(3, 4);
87#endif /* !defined(HAVE_SNPRINTF) */
88
89#if !defined(HAVE_VSNPRINTF)
90int vsnprintf (char *str, size_t sz, FORMAT_STRING(const char *format),
91     va_list ap) PRINTFLIKE(3, 0);
92#endif /* !defined(HAVE_VSNPRINTF) */
93
94#ifndef HAVE_STRLCAT
95extern size_t strlcat (char *, const char *, size_t);
96#endif
97#ifndef HAVE_STRLCPY
98extern size_t strlcpy (char *, const char *, size_t);
99#endif
100
101#ifndef HAVE_STRDUP
102extern char *strdup (const char *str);
103#endif
104
105#ifndef HAVE_STRSEP
106extern char *strsep(char **, const char *);
107#endif
108
109struct tok {
110	u_int v;		/* value */
111	const char *s;		/* string */
112};
113
114extern const char *tok2strbuf(const struct tok *, const char *, u_int,
115			      char *buf, size_t bufsize);
116
117/* tok2str is deprecated */
118extern const char *tok2str(const struct tok *, const char *, u_int);
119extern char *bittok2str(const struct tok *, const char *, u_int);
120extern char *bittok2str_nosep(const struct tok *, const char *, u_int);
121
122/* Initialize netdissect. */
123extern int nd_init(char *, size_t);
124/* Clean up netdissect. */
125extern void nd_cleanup(void);
126
127/* Do we have libsmi support? */
128extern int nd_have_smi_support(void);
129/* Load an SMI module. */
130extern int nd_load_smi_module(const char *, char *, size_t);
131/* Flag indicating whether an SMI module has been loaded. */
132extern int nd_smi_module_loaded;
133/* Version number of the SMI library, or NULL if we don't have libsmi support. */
134extern const char *nd_smi_version_string(void);
135
136typedef struct netdissect_options netdissect_options;
137
138#define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *)
139
140typedef u_int (*if_printer) IF_PRINTER_ARGS;
141
142struct netdissect_options {
143  int ndo_bflag;		/* print 4 byte ASes in ASDOT notation */
144  int ndo_eflag;		/* print ethernet header */
145  int ndo_fflag;		/* don't translate "foreign" IP address */
146  int ndo_Kflag;		/* don't check TCP checksums */
147  int ndo_nflag;		/* leave addresses as numbers */
148  int ndo_Nflag;		/* remove domains from printed host names */
149  int ndo_qflag;		/* quick (shorter) output */
150  int ndo_Sflag;		/* print raw TCP sequence numbers */
151  int ndo_tflag;		/* print packet arrival time */
152  int ndo_uflag;		/* Print undecoded NFS handles */
153  int ndo_vflag;		/* verbosity level */
154  int ndo_xflag;		/* print packet in hex */
155  int ndo_Xflag;		/* print packet in hex/ascii */
156  int ndo_Aflag;		/* print packet only in ascii observing TAB,
157				 * LF, CR and SPACE as graphical chars
158				 */
159  int ndo_Hflag;		/* dissect 802.11s draft mesh standard */
160  int ndo_packet_number;	/* print a packet number in the beginning of line */
161  int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
162  int ndo_tstamp_precision;	/* requested time stamp precision */
163  const char *program_name;	/* Name of the program using the library */
164
165  char *ndo_espsecret;
166  struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
167  struct sa_list *ndo_sa_default;
168
169  char *ndo_sigsecret;		/* Signature verification secret key */
170
171  int   ndo_packettype;	/* as specified by -T */
172
173  int   ndo_snaplen;
174
175  /*global pointers to beginning and end of current packet (during printing) */
176  const u_char *ndo_packetp;
177  const u_char *ndo_snapend;
178
179  /* pointer to the if_printer function */
180  if_printer ndo_if_printer;
181
182  /* pointer to void function to output stuff */
183  void (*ndo_default_print)(netdissect_options *,
184			    register const u_char *bp, register u_int length);
185
186  /* pointer to function to do regular output */
187  int  (*ndo_printf)(netdissect_options *,
188		     const char *fmt, ...)
189#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
190		     __attribute__ ((format (printf, 2, 3)))
191#endif
192		     ;
193  /* pointer to function to output errors */
194  void (*ndo_error)(netdissect_options *,
195		    const char *fmt, ...)
196#ifdef __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS
197		     __attribute__ ((noreturn))
198#endif /* __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS */
199#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
200		     __attribute__ ((format (printf, 2, 3)))
201#endif /* __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS */
202		     ;
203  /* pointer to function to output warnings */
204  void (*ndo_warning)(netdissect_options *,
205		      const char *fmt, ...)
206#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
207		     __attribute__ ((format (printf, 2, 3)))
208#endif
209		     ;
210};
211
212#define PT_VAT		1	/* Visual Audio Tool */
213#define PT_WB		2	/* distributed White Board */
214#define PT_RPC		3	/* Remote Procedure Call */
215#define PT_RTP		4	/* Real-Time Applications protocol */
216#define PT_RTCP		5	/* Real-Time Applications control protocol */
217#define PT_SNMP		6	/* Simple Network Management Protocol */
218#define PT_CNFP		7	/* Cisco NetFlow protocol */
219#define PT_TFTP		8	/* trivial file transfer protocol */
220#define PT_AODV		9	/* Ad-hoc On-demand Distance Vector Protocol */
221#define PT_CARP		10	/* Common Address Redundancy Protocol */
222#define PT_RADIUS	11	/* RADIUS authentication Protocol */
223#define PT_ZMTP1	12	/* ZeroMQ Message Transport Protocol 1.0 */
224#define PT_VXLAN	13	/* Virtual eXtensible Local Area Network */
225#define PT_PGM		14	/* [UDP-encapsulated] Pragmatic General Multicast */
226#define PT_PGM_ZMTP1	15	/* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
227#define PT_LMP		16	/* Link Management Protocol */
228#define PT_RESP		17	/* RESP */
229
230#ifndef min
231#define min(a,b) ((a)>(b)?(b):(a))
232#endif
233#ifndef max
234#define max(a,b) ((b)>(a)?(b):(a))
235#endif
236
237/* For source or destination ports tests (UDP, TCP, ...) */
238#define IS_SRC_OR_DST_PORT(p) (sport == (p) || dport == (p))
239
240/*
241 * Maximum snapshot length.  This should be enough to capture the full
242 * packet on most network interfaces.
243 *
244 *
245 * Somewhat arbitrary, but chosen to be:
246 *
247 *    1) big enough for maximum-size Linux loopback packets (65549)
248 *       and some USB packets captured with USBPcap:
249 *
250 *           http://desowin.org/usbpcap/
251 *
252 *       (> 131072, < 262144)
253 *
254 * and
255 *
256 *    2) small enough not to cause attempts to allocate huge amounts of
257 *       memory; some applications might use the snapshot length in a
258 *       savefile header to control the size of the buffer they allocate,
259 *       so a size of, say, 2^31-1 might not work well.
260 *
261 * XXX - does it need to be bigger still?
262 */
263#define MAXIMUM_SNAPLEN	262144
264
265/*
266 * The default snapshot length is the maximum.
267 */
268#define DEFAULT_SNAPLEN	MAXIMUM_SNAPLEN
269
270#define ESRC(ep) ((ep)->ether_shost)
271#define EDST(ep) ((ep)->ether_dhost)
272
273#ifndef NTOHL
274#define NTOHL(x)	(x) = ntohl(x)
275#define NTOHS(x)	(x) = ntohs(x)
276#define HTONL(x)	(x) = htonl(x)
277#define HTONS(x)	(x) = htons(x)
278#endif
279
280/*
281 * True if "l" bytes of "var" were captured.
282 *
283 * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
284 * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
285 *
286 * The check is for <= rather than < because "l" might be 0.
287 *
288 * We cast the pointers to uintptr_t to make sure that the compiler
289 * doesn't optimize away any of these tests (which it is allowed to
290 * do, as adding an integer to, or subtracting an integer from, a
291 * pointer assumes that the pointer is a pointer to an element of an
292 * array and that the result of the addition or subtraction yields a
293 * pointer to another member of the array, so that, for example, if
294 * you subtract a positive integer from a pointer, the result is
295 * guaranteed to be less than the original pointer value). See
296 *
297 *	http://www.kb.cert.org/vuls/id/162289
298 */
299
300/*
301 * Test in two parts to avoid these warnings:
302 * comparison of unsigned expression >= 0 is always true [-Wtype-limits],
303 * comparison is always true due to limited range of data type [-Wtype-limits].
304 */
305#define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0))
306
307#define ND_TTEST2(var, l) \
308  (IS_NOT_NEGATIVE(l) && \
309	((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \
310         (uintptr_t)&(var) <= (uintptr_t)ndo->ndo_snapend - (l)))
311
312/* True if "var" was captured */
313#define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
314
315/* Bail if "l" bytes of "var" were not captured */
316#define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
317
318/* Bail if "var" was not captured */
319#define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
320
321#define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
322#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
323
324extern void ts_print(netdissect_options *, const struct timeval *);
325extern void signed_relts_print(netdissect_options *, int32_t);
326extern void unsigned_relts_print(netdissect_options *, uint32_t);
327
328extern void fn_print_char(netdissect_options *, u_char);
329extern int fn_print(netdissect_options *, const u_char *, const u_char *);
330extern u_int fn_printztn(netdissect_options *ndo, const u_char *, u_int, const u_char *);
331extern int fn_printn(netdissect_options *, const u_char *, u_int, const u_char *);
332extern int fn_printzp(netdissect_options *, const u_char *, u_int, const u_char *);
333
334/*
335 * Flags for txtproto_print().
336 */
337#define RESP_CODE_SECOND_TOKEN	0x00000001	/* response code is second token in response line */
338
339extern void txtproto_print(netdissect_options *, const u_char *, u_int,
340    const char *, const char **, u_int);
341
342/*
343 * Locale-independent macros for testing character properties and
344 * stripping the 8th bit from characters.  Assumed to be handed
345 * a value between 0 and 255, i.e. don't hand them a char, as
346 * those might be in the range -128 to 127.
347 */
348#define ND_ISASCII(c)	(!((c) & 0x80))	/* value is an ASCII code point */
349#define ND_ISPRINT(c)	((c) >= 0x20 && (c) <= 0x7E)
350#define ND_ISGRAPH(c)	((c) > 0x20 && (c) <= 0x7E)
351#define ND_TOASCII(c)	((c) & 0x7F)
352
353extern void safeputchar(netdissect_options *, const u_char);
354extern void safeputs(netdissect_options *, const u_char *, const u_int);
355
356#ifdef LBL_ALIGN
357/*
358 * The processor doesn't natively handle unaligned loads,
359 * and the compiler might "helpfully" optimize memcpy()
360 * and memcmp(), when handed pointers that would normally
361 * be properly aligned, into sequences that assume proper
362 * alignment.
363 *
364 * Do copies and compares of possibly-unaligned data by
365 * calling routines that wrap memcpy() and memcmp(), to
366 * prevent that optimization.
367 */
368extern void unaligned_memcpy(void *, const void *, size_t);
369extern int unaligned_memcmp(const void *, const void *, size_t);
370#define UNALIGNED_MEMCPY(p, q, l)	unaligned_memcpy((p), (q), (l))
371#define UNALIGNED_MEMCMP(p, q, l)	unaligned_memcmp((p), (q), (l))
372#else
373/*
374 * The procesor natively handles unaligned loads, so just use memcpy()
375 * and memcmp(), to enable those optimizations.
376 */
377#define UNALIGNED_MEMCPY(p, q, l)	memcpy((p), (q), (l))
378#define UNALIGNED_MEMCMP(p, q, l)	memcmp((p), (q), (l))
379#endif
380
381#define PLURAL_SUFFIX(n) \
382	(((n) != 1) ? "s" : "")
383
384extern const char *tok2strary_internal(const char **, int, const char *, int);
385#define	tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
386
387extern if_printer lookup_printer(int);
388
389/* The DLT printer routines */
390
391extern u_int ap1394_if_print IF_PRINTER_ARGS;
392extern u_int arcnet_if_print IF_PRINTER_ARGS;
393extern u_int arcnet_linux_if_print IF_PRINTER_ARGS;
394extern u_int atm_if_print IF_PRINTER_ARGS;
395extern u_int bt_if_print IF_PRINTER_ARGS;
396extern u_int chdlc_if_print IF_PRINTER_ARGS;
397extern u_int cip_if_print IF_PRINTER_ARGS;
398extern u_int enc_if_print IF_PRINTER_ARGS;
399extern u_int ether_if_print IF_PRINTER_ARGS;
400extern u_int fddi_if_print IF_PRINTER_ARGS;
401extern u_int fr_if_print IF_PRINTER_ARGS;
402extern u_int ieee802_11_if_print IF_PRINTER_ARGS;
403extern u_int ieee802_11_radio_avs_if_print IF_PRINTER_ARGS;
404extern u_int ieee802_11_radio_if_print IF_PRINTER_ARGS;
405extern u_int ieee802_15_4_if_print IF_PRINTER_ARGS;
406extern u_int ipfc_if_print IF_PRINTER_ARGS;
407extern u_int ipnet_if_print IF_PRINTER_ARGS;
408extern u_int juniper_atm1_print IF_PRINTER_ARGS;
409extern u_int juniper_atm2_print IF_PRINTER_ARGS;
410extern u_int juniper_chdlc_print IF_PRINTER_ARGS;
411extern u_int juniper_es_print IF_PRINTER_ARGS;
412extern u_int juniper_ether_print IF_PRINTER_ARGS;
413extern u_int juniper_frelay_print IF_PRINTER_ARGS;
414extern u_int juniper_ggsn_print IF_PRINTER_ARGS;
415extern u_int juniper_mfr_print IF_PRINTER_ARGS;
416extern u_int juniper_mlfr_print IF_PRINTER_ARGS;
417extern u_int juniper_mlppp_print IF_PRINTER_ARGS;
418extern u_int juniper_monitor_print IF_PRINTER_ARGS;
419extern u_int juniper_ppp_print IF_PRINTER_ARGS;
420extern u_int juniper_pppoe_atm_print IF_PRINTER_ARGS;
421extern u_int juniper_pppoe_print IF_PRINTER_ARGS;
422extern u_int juniper_services_print IF_PRINTER_ARGS;
423extern u_int lane_if_print IF_PRINTER_ARGS;
424extern u_int ltalk_if_print IF_PRINTER_ARGS;
425extern u_int mfr_if_print IF_PRINTER_ARGS;
426extern u_int netanalyzer_if_print IF_PRINTER_ARGS;
427extern u_int netanalyzer_transparent_if_print IF_PRINTER_ARGS;
428extern u_int nflog_if_print IF_PRINTER_ARGS;
429extern u_int null_if_print IF_PRINTER_ARGS;
430extern u_int pflog_if_print IF_PRINTER_ARGS;
431extern u_int pktap_if_print IF_PRINTER_ARGS;
432extern u_int ppi_if_print IF_PRINTER_ARGS;
433extern u_int ppp_bsdos_if_print IF_PRINTER_ARGS;
434extern u_int ppp_hdlc_if_print IF_PRINTER_ARGS;
435extern u_int ppp_if_print IF_PRINTER_ARGS;
436extern u_int pppoe_if_print IF_PRINTER_ARGS;
437extern u_int prism_if_print IF_PRINTER_ARGS;
438extern u_int raw_if_print IF_PRINTER_ARGS;
439extern u_int sl_bsdos_if_print IF_PRINTER_ARGS;
440extern u_int sl_if_print IF_PRINTER_ARGS;
441extern u_int sll_if_print IF_PRINTER_ARGS;
442extern u_int sunatm_if_print IF_PRINTER_ARGS;
443extern u_int symantec_if_print IF_PRINTER_ARGS;
444extern u_int token_if_print IF_PRINTER_ARGS;
445extern u_int usb_linux_48_byte_print IF_PRINTER_ARGS;
446extern u_int usb_linux_64_byte_print IF_PRINTER_ARGS;
447
448/*
449 * Structure passed to some printers to allow them to print
450 * link-layer address information if ndo_eflag isn't set
451 * (because they are for protocols that don't have their
452 * own addresses, so that we'd want to report link-layer
453 * address information).
454 *
455 * This contains a pointer to an address and a pointer to a routine
456 * to which we pass that pointer in order to get a string.
457 */
458struct lladdr_info {
459	const char *(*addr_string)(netdissect_options *, const u_char *);
460	const u_char *addr;
461};
462
463/* The printer routines. */
464
465extern void aarp_print(netdissect_options *, const u_char *, u_int);
466extern int ah_print(netdissect_options *, register const u_char *);
467extern void ahcp_print(netdissect_options *, const u_char *, const u_int);
468extern void aodv_print(netdissect_options *, const u_char *, u_int, int);
469extern void aoe_print(netdissect_options *, const u_char *, const u_int);
470extern void arp_print(netdissect_options *, const u_char *, u_int, u_int);
471extern void ascii_print(netdissect_options *, const u_char *, u_int);
472extern void atalk_print(netdissect_options *, const u_char *, u_int);
473extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
474extern void babel_print(netdissect_options *, const u_char *, u_int);
475extern void beep_print(netdissect_options *, const u_char *, u_int);
476extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int);
477extern void bgp_print(netdissect_options *, const u_char *, int);
478extern char *bgp_vpn_rd_print (netdissect_options *, const u_char *);
479extern void bootp_print(netdissect_options *, const u_char *, u_int);
480extern void calm_fast_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
481extern void carp_print(netdissect_options *, const u_char *, u_int, int);
482extern void cdp_print(netdissect_options *, const u_char *, u_int, u_int);
483extern void cfm_print(netdissect_options *, const u_char *, u_int);
484extern u_int chdlc_print(netdissect_options *, register const u_char *, u_int);
485extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int);
486extern void cnfp_print(netdissect_options *, const u_char *);
487extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
488extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int);
489extern void dhcp6_print(netdissect_options *, const u_char *, u_int);
490extern int dstopt_print(netdissect_options *, const u_char *);
491extern void dtp_print(netdissect_options *, const u_char *, u_int);
492extern void dvmrp_print(netdissect_options *, const u_char *, u_int);
493extern void eap_print(netdissect_options *, const u_char *, u_int);
494extern void egp_print(netdissect_options *, const u_char *, u_int);
495extern void eigrp_print(netdissect_options *, const u_char *, u_int);
496extern int esp_print(netdissect_options *, const u_char *, const int, const u_char *, int *, int *);
497extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *);
498extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
499extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int);
500extern void forces_print(netdissect_options *, const u_char *, u_int);
501extern u_int fr_print(netdissect_options *, register const u_char *, u_int);
502extern int frag6_print(netdissect_options *, const u_char *, const u_char *);
503extern void ftp_print(netdissect_options *, const u_char *, u_int);
504extern void geneve_print(netdissect_options *, const u_char *, u_int);
505extern void geonet_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
506extern void gre_print(netdissect_options *, const u_char *, u_int);
507extern int hbhopt_print(netdissect_options *, const u_char *);
508extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int);
509extern void hex_and_ascii_print_with_offset(netdissect_options *, const char *, const u_char *, u_int, u_int);
510extern void hex_print(netdissect_options *, const char *ident, const u_char *cp, u_int);
511extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp, u_int, u_int);
512extern void hncp_print(netdissect_options *, const u_char *, u_int);
513extern void hsrp_print(netdissect_options *, const u_char *, u_int);
514extern void http_print(netdissect_options *, const u_char *, u_int);
515extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
516extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
517extern u_int ieee802_11_radio_print(netdissect_options *, const u_char *, u_int, u_int);
518extern void igmp_print(netdissect_options *, const u_char *, u_int);
519extern void igrp_print(netdissect_options *, const u_char *, u_int);
520extern void ip6_print(netdissect_options *, const u_char *, u_int);
521extern void ipN_print(netdissect_options *, const u_char *, u_int);
522extern void ip_print(netdissect_options *, const u_char *, u_int);
523extern void ip_print_inner(netdissect_options *, const u_char *, u_int, u_int nh, const u_char *);
524extern void ipcomp_print(netdissect_options *, register const u_char *);
525extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int);
526extern void ipx_print(netdissect_options *, const u_char *, u_int);
527extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *);
528extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *);
529extern void isoclns_print(netdissect_options *, const u_char *, u_int);
530extern void krb_print(netdissect_options *, const u_char *);
531extern void l2tp_print(netdissect_options *, const u_char *, u_int);
532extern void lane_print(netdissect_options *, const u_char *, u_int, u_int);
533extern void ldp_print(netdissect_options *, const u_char *, u_int);
534extern void lisp_print(netdissect_options *, const u_char *, u_int);
535extern u_int llap_print(netdissect_options *, const u_char *, u_int);
536extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
537extern void lldp_print(netdissect_options *, const u_char *, u_int);
538extern void lmp_print(netdissect_options *, const u_char *, u_int);
539extern void loopback_print(netdissect_options *, const u_char *, const u_int);
540extern void lspping_print(netdissect_options *, const u_char *, u_int);
541extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
542extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
543extern void lwres_print(netdissect_options *, const u_char *, u_int);
544extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
545extern void medsa_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
546extern u_int mfr_print(netdissect_options *, register const u_char *, u_int);
547extern void mobile_print(netdissect_options *, const u_char *, u_int);
548extern int mobility_print(netdissect_options *, const u_char *, const u_char *);
549extern void mpcp_print(netdissect_options *, const u_char *, u_int);
550extern void mpls_print(netdissect_options *, const u_char *, u_int);
551extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
552extern void msdp_print(netdissect_options *, const u_char *, u_int);
553extern void msnlb_print(netdissect_options *, const u_char *);
554extern void nbt_tcp_print(netdissect_options *, const u_char *, int);
555extern void nbt_udp137_print(netdissect_options *, const u_char *, int);
556extern void nbt_udp138_print(netdissect_options *, const u_char *, int);
557extern void netbeui_print(netdissect_options *, u_short, const u_char *, int);
558extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *);
559extern void nfsreply_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
560extern void nfsreq_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
561extern const u_char * ns_nprint (netdissect_options *, register const u_char *, register const u_char *);
562extern void ns_print(netdissect_options *, const u_char *, u_int, int);
563extern void nsh_print(netdissect_options *ndo, const u_char *bp, u_int len);
564extern void ntp_print(netdissect_options *, const u_char *, u_int);
565extern void oam_print(netdissect_options *, const u_char *, u_int, u_int);
566extern void olsr_print(netdissect_options *, const u_char *, u_int, int);
567extern void openflow_print(netdissect_options *, const u_char *, const u_int);
568extern void ospf6_print(netdissect_options *, const u_char *, u_int);
569extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *);
570extern int ospf_print_grace_lsa(netdissect_options *, const uint8_t *, u_int);
571extern int ospf_print_te_lsa(netdissect_options *, const uint8_t *, u_int);
572extern void otv_print(netdissect_options *, const u_char *, u_int);
573extern void pfsync_ip_print(netdissect_options *, const u_char *, u_int);
574extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
575extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *);
576extern void pimv1_print(netdissect_options *, const u_char *, u_int);
577extern u_int ppp_print(netdissect_options *, register const u_char *, u_int);
578extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
579extern void pptp_print(netdissect_options *, const u_char *);
580extern int print_unknown_data(netdissect_options *, const u_char *, const char *, int);
581extern char *q922_string(netdissect_options *, const u_char *, u_int);
582extern void q933_print(netdissect_options *, const u_char *, u_int);
583extern void radius_print(netdissect_options *, const u_char *, u_int);
584extern void resp_print(netdissect_options *, const u_char *, u_int);
585extern void rip_print(netdissect_options *, const u_char *, u_int);
586extern void ripng_print(netdissect_options *, const u_char *, unsigned int);
587extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
588extern void rrcp_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *, const struct lladdr_info *);
589extern void rsvp_print(netdissect_options *, const u_char *, u_int);
590extern int rt6_print(netdissect_options *, const u_char *, const u_char *);
591extern void rtsp_print(netdissect_options *, const u_char *, u_int);
592extern void rx_print(netdissect_options *, register const u_char *, int, int, int, const u_char *);
593extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int);
594extern void sflow_print(netdissect_options *, const u_char *, u_int);
595extern void sip_print(netdissect_options *, const u_char *, u_int);
596extern void slow_print(netdissect_options *, const u_char *, u_int);
597extern void smb_print_data(netdissect_options *, const unsigned char *, int);
598extern void smb_tcp_print(netdissect_options *, const u_char *, int);
599extern void smtp_print(netdissect_options *, const u_char *, u_int);
600extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *, u_int);
601extern void snmp_print(netdissect_options *, const u_char *, u_int);
602extern void stp_print(netdissect_options *, const u_char *, u_int);
603extern void sunrpcrequest_print(netdissect_options *, const u_char *, u_int, const u_char *);
604extern void syslog_print(netdissect_options *, const u_char *, u_int);
605extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
606extern void telnet_print(netdissect_options *, const u_char *, u_int);
607extern void tftp_print(netdissect_options *, const u_char *, u_int);
608extern void timed_print(netdissect_options *, const u_char *);
609extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
610extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
611extern void udld_print(netdissect_options *, const u_char *, u_int);
612extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
613extern int vjc_print(netdissect_options *, register const char *, u_short);
614extern void vqp_print(netdissect_options *, register const u_char *, register u_int);
615extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
616extern void vtp_print(netdissect_options *, const u_char *, u_int);
617extern void vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len);
618extern void vxlan_print(netdissect_options *, const u_char *, u_int);
619extern void wb_print(netdissect_options *, const void *, u_int);
620extern void zephyr_print(netdissect_options *, const u_char *, int);
621extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
622extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
623
624/* checksum routines */
625extern void init_checksum(void);
626extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
627extern uint16_t create_osi_cksum(const uint8_t *, int, int);
628
629struct cksum_vec {
630	const uint8_t	*ptr;
631	int		len;
632};
633extern uint16_t in_cksum(const struct cksum_vec *, int);
634extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
635
636extern int nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, u_int);
637
638/* in print-ip6.c */
639extern int nextproto6_cksum(netdissect_options *, const struct ip6_hdr *, const uint8_t *, u_int, u_int, u_int);
640
641/* Utilities */
642extern int mask2plen(uint32_t);
643extern int mask62plen(const u_char *);
644
645extern const char *dnnum_string(netdissect_options *, u_short);
646
647extern char *smb_errstr(int, int);
648extern const char *nt_errstr(uint32_t);
649
650extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, u_int);
651extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, u_int);
652
653extern void esp_print_decodesecret(netdissect_options *);
654extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *, int,
655					     u_char spii[8], u_char spir[8],
656					     const u_char *, const u_char *);
657
658#endif  /* netdissect_h */
659