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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@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  */
45 typedef unsigned char nd_uint16_t[2];
46 typedef unsigned char nd_uint24_t[3];
47 typedef unsigned char nd_uint32_t[4];
48 typedef unsigned char nd_uint40_t[5];
49 typedef unsigned char nd_uint48_t[6];
50 typedef unsigned char nd_uint56_t[7];
51 typedef 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  */
61 typedef struct {
62 	unsigned char bytes[4];
63 } nd_ipv4;
64 
65 /*
66  * Data types corresponding to single-byte integral values, for
67  * completeness.
68  */
69 typedef unsigned char nd_uint8_t;
70 typedef 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 
80 extern int32_t thiszone;	/* seconds offset from gmt to local time */
81 /* invalid string to print '(invalid)' for malformed or corrupted packets */
82 extern const char istr[];
83 
84 #if !defined(HAVE_SNPRINTF)
85 int 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)
90 int 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
95 extern size_t strlcat (char *, const char *, size_t);
96 #endif
97 #ifndef HAVE_STRLCPY
98 extern size_t strlcpy (char *, const char *, size_t);
99 #endif
100 
101 #ifndef HAVE_STRDUP
102 extern char *strdup (const char *str);
103 #endif
104 
105 #ifndef HAVE_STRSEP
106 extern char *strsep(char **, const char *);
107 #endif
108 
109 struct tok {
110 	u_int v;		/* value */
111 	const char *s;		/* string */
112 };
113 
114 extern const char *tok2strbuf(const struct tok *, const char *, u_int,
115 			      char *buf, size_t bufsize);
116 
117 /* tok2str is deprecated */
118 extern const char *tok2str(const struct tok *, const char *, u_int);
119 extern char *bittok2str(const struct tok *, const char *, u_int);
120 extern char *bittok2str_nosep(const struct tok *, const char *, u_int);
121 
122 /* Initialize netdissect. */
123 extern int nd_init(char *, size_t);
124 /* Clean up netdissect. */
125 extern void nd_cleanup(void);
126 
127 /* Do we have libsmi support? */
128 extern int nd_have_smi_support(void);
129 /* Load an SMI module. */
130 extern int nd_load_smi_module(const char *, char *, size_t);
131 /* Flag indicating whether an SMI module has been loaded. */
132 extern int nd_smi_module_loaded;
133 /* Version number of the SMI library, or NULL if we don't have libsmi support. */
134 extern const char *nd_smi_version_string(void);
135 
136 typedef struct netdissect_options netdissect_options;
137 
138 #define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *)
139 
140 typedef u_int (*if_printer) IF_PRINTER_ARGS;
141 
142 struct 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 
324 extern void ts_print(netdissect_options *, const struct timeval *);
325 extern void signed_relts_print(netdissect_options *, int32_t);
326 extern void unsigned_relts_print(netdissect_options *, uint32_t);
327 
328 extern void fn_print_char(netdissect_options *, u_char);
329 extern int fn_print(netdissect_options *, const u_char *, const u_char *);
330 extern u_int fn_printztn(netdissect_options *ndo, const u_char *, u_int, const u_char *);
331 extern int fn_printn(netdissect_options *, const u_char *, u_int, const u_char *);
332 extern 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 
339 extern 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 
353 extern void safeputchar(netdissect_options *, const u_char);
354 extern 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  */
368 extern void unaligned_memcpy(void *, const void *, size_t);
369 extern 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 
384 extern 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 
387 extern if_printer lookup_printer(int);
388 
389 /* The DLT printer routines */
390 
391 extern u_int ap1394_if_print IF_PRINTER_ARGS;
392 extern u_int arcnet_if_print IF_PRINTER_ARGS;
393 extern u_int arcnet_linux_if_print IF_PRINTER_ARGS;
394 extern u_int atm_if_print IF_PRINTER_ARGS;
395 extern u_int bt_if_print IF_PRINTER_ARGS;
396 extern u_int chdlc_if_print IF_PRINTER_ARGS;
397 extern u_int cip_if_print IF_PRINTER_ARGS;
398 extern u_int enc_if_print IF_PRINTER_ARGS;
399 extern u_int ether_if_print IF_PRINTER_ARGS;
400 extern u_int fddi_if_print IF_PRINTER_ARGS;
401 extern u_int fr_if_print IF_PRINTER_ARGS;
402 extern u_int ieee802_11_if_print IF_PRINTER_ARGS;
403 extern u_int ieee802_11_radio_avs_if_print IF_PRINTER_ARGS;
404 extern u_int ieee802_11_radio_if_print IF_PRINTER_ARGS;
405 extern u_int ieee802_15_4_if_print IF_PRINTER_ARGS;
406 extern u_int ipfc_if_print IF_PRINTER_ARGS;
407 extern u_int ipnet_if_print IF_PRINTER_ARGS;
408 extern u_int juniper_atm1_print IF_PRINTER_ARGS;
409 extern u_int juniper_atm2_print IF_PRINTER_ARGS;
410 extern u_int juniper_chdlc_print IF_PRINTER_ARGS;
411 extern u_int juniper_es_print IF_PRINTER_ARGS;
412 extern u_int juniper_ether_print IF_PRINTER_ARGS;
413 extern u_int juniper_frelay_print IF_PRINTER_ARGS;
414 extern u_int juniper_ggsn_print IF_PRINTER_ARGS;
415 extern u_int juniper_mfr_print IF_PRINTER_ARGS;
416 extern u_int juniper_mlfr_print IF_PRINTER_ARGS;
417 extern u_int juniper_mlppp_print IF_PRINTER_ARGS;
418 extern u_int juniper_monitor_print IF_PRINTER_ARGS;
419 extern u_int juniper_ppp_print IF_PRINTER_ARGS;
420 extern u_int juniper_pppoe_atm_print IF_PRINTER_ARGS;
421 extern u_int juniper_pppoe_print IF_PRINTER_ARGS;
422 extern u_int juniper_services_print IF_PRINTER_ARGS;
423 extern u_int lane_if_print IF_PRINTER_ARGS;
424 extern u_int ltalk_if_print IF_PRINTER_ARGS;
425 extern u_int mfr_if_print IF_PRINTER_ARGS;
426 extern u_int netanalyzer_if_print IF_PRINTER_ARGS;
427 extern u_int netanalyzer_transparent_if_print IF_PRINTER_ARGS;
428 extern u_int nflog_if_print IF_PRINTER_ARGS;
429 extern u_int null_if_print IF_PRINTER_ARGS;
430 extern u_int pflog_if_print IF_PRINTER_ARGS;
431 extern u_int pktap_if_print IF_PRINTER_ARGS;
432 extern u_int ppi_if_print IF_PRINTER_ARGS;
433 extern u_int ppp_bsdos_if_print IF_PRINTER_ARGS;
434 extern u_int ppp_hdlc_if_print IF_PRINTER_ARGS;
435 extern u_int ppp_if_print IF_PRINTER_ARGS;
436 extern u_int pppoe_if_print IF_PRINTER_ARGS;
437 extern u_int prism_if_print IF_PRINTER_ARGS;
438 extern u_int raw_if_print IF_PRINTER_ARGS;
439 extern u_int sl_bsdos_if_print IF_PRINTER_ARGS;
440 extern u_int sl_if_print IF_PRINTER_ARGS;
441 extern u_int sll_if_print IF_PRINTER_ARGS;
442 extern u_int sunatm_if_print IF_PRINTER_ARGS;
443 extern u_int symantec_if_print IF_PRINTER_ARGS;
444 extern u_int token_if_print IF_PRINTER_ARGS;
445 extern u_int usb_linux_48_byte_print IF_PRINTER_ARGS;
446 extern 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  */
458 struct lladdr_info {
459 	const char *(*addr_string)(netdissect_options *, const u_char *);
460 	const u_char *addr;
461 };
462 
463 /* The printer routines. */
464 
465 extern void aarp_print(netdissect_options *, const u_char *, u_int);
466 extern int ah_print(netdissect_options *, register const u_char *);
467 extern void ahcp_print(netdissect_options *, const u_char *, const u_int);
468 extern void aodv_print(netdissect_options *, const u_char *, u_int, int);
469 extern void aoe_print(netdissect_options *, const u_char *, const u_int);
470 extern void arp_print(netdissect_options *, const u_char *, u_int, u_int);
471 extern void ascii_print(netdissect_options *, const u_char *, u_int);
472 extern void atalk_print(netdissect_options *, const u_char *, u_int);
473 extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
474 extern void babel_print(netdissect_options *, const u_char *, u_int);
475 extern void beep_print(netdissect_options *, const u_char *, u_int);
476 extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int);
477 extern void bgp_print(netdissect_options *, const u_char *, int);
478 extern char *bgp_vpn_rd_print (netdissect_options *, const u_char *);
479 extern void bootp_print(netdissect_options *, const u_char *, u_int);
480 extern void calm_fast_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
481 extern void carp_print(netdissect_options *, const u_char *, u_int, int);
482 extern void cdp_print(netdissect_options *, const u_char *, u_int, u_int);
483 extern void cfm_print(netdissect_options *, const u_char *, u_int);
484 extern u_int chdlc_print(netdissect_options *, register const u_char *, u_int);
485 extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int);
486 extern void cnfp_print(netdissect_options *, const u_char *);
487 extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
488 extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int);
489 extern void dhcp6_print(netdissect_options *, const u_char *, u_int);
490 extern int dstopt_print(netdissect_options *, const u_char *);
491 extern void dtp_print(netdissect_options *, const u_char *, u_int);
492 extern void dvmrp_print(netdissect_options *, const u_char *, u_int);
493 extern void eap_print(netdissect_options *, const u_char *, u_int);
494 extern void egp_print(netdissect_options *, const u_char *, u_int);
495 extern void eigrp_print(netdissect_options *, const u_char *, u_int);
496 extern int esp_print(netdissect_options *, const u_char *, const int, const u_char *, int *, int *);
497 extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *);
498 extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
499 extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int);
500 extern void forces_print(netdissect_options *, const u_char *, u_int);
501 extern u_int fr_print(netdissect_options *, register const u_char *, u_int);
502 extern int frag6_print(netdissect_options *, const u_char *, const u_char *);
503 extern void ftp_print(netdissect_options *, const u_char *, u_int);
504 extern void geneve_print(netdissect_options *, const u_char *, u_int);
505 extern void geonet_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
506 extern void gre_print(netdissect_options *, const u_char *, u_int);
507 extern int hbhopt_print(netdissect_options *, const u_char *);
508 extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int);
509 extern void hex_and_ascii_print_with_offset(netdissect_options *, const char *, const u_char *, u_int, u_int);
510 extern void hex_print(netdissect_options *, const char *ident, const u_char *cp, u_int);
511 extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp, u_int, u_int);
512 extern void hncp_print(netdissect_options *, const u_char *, u_int);
513 extern void hsrp_print(netdissect_options *, const u_char *, u_int);
514 extern void http_print(netdissect_options *, const u_char *, u_int);
515 extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
516 extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
517 extern void igmp_print(netdissect_options *, const u_char *, u_int);
518 extern void igrp_print(netdissect_options *, const u_char *, u_int);
519 extern void ip6_print(netdissect_options *, const u_char *, u_int);
520 extern void ipN_print(netdissect_options *, const u_char *, u_int);
521 extern void ip_print(netdissect_options *, const u_char *, u_int);
522 extern void ip_print_inner(netdissect_options *, const u_char *, u_int, u_int nh, const u_char *);
523 extern void ipcomp_print(netdissect_options *, register const u_char *);
524 extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int);
525 extern void ipx_print(netdissect_options *, const u_char *, u_int);
526 extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *);
527 extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *);
528 extern void isoclns_print(netdissect_options *, const u_char *, u_int);
529 extern void krb_print(netdissect_options *, const u_char *);
530 extern void l2tp_print(netdissect_options *, const u_char *, u_int);
531 extern void lane_print(netdissect_options *, const u_char *, u_int, u_int);
532 extern void ldp_print(netdissect_options *, const u_char *, u_int);
533 extern void lisp_print(netdissect_options *, const u_char *, u_int);
534 extern u_int llap_print(netdissect_options *, const u_char *, u_int);
535 extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
536 extern void lldp_print(netdissect_options *, const u_char *, u_int);
537 extern void lmp_print(netdissect_options *, const u_char *, u_int);
538 extern void loopback_print(netdissect_options *, const u_char *, const u_int);
539 extern void lspping_print(netdissect_options *, const u_char *, u_int);
540 extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
541 extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
542 extern void lwres_print(netdissect_options *, const u_char *, u_int);
543 extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
544 extern void medsa_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
545 extern u_int mfr_print(netdissect_options *, register const u_char *, u_int);
546 extern void mobile_print(netdissect_options *, const u_char *, u_int);
547 extern int mobility_print(netdissect_options *, const u_char *, const u_char *);
548 extern void mpcp_print(netdissect_options *, const u_char *, u_int);
549 extern void mpls_print(netdissect_options *, const u_char *, u_int);
550 extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
551 extern void msdp_print(netdissect_options *, const u_char *, u_int);
552 extern void msnlb_print(netdissect_options *, const u_char *);
553 extern void nbt_tcp_print(netdissect_options *, const u_char *, int);
554 extern void nbt_udp137_print(netdissect_options *, const u_char *, int);
555 extern void nbt_udp138_print(netdissect_options *, const u_char *, int);
556 extern void netbeui_print(netdissect_options *, u_short, const u_char *, int);
557 extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *);
558 extern void nfsreply_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
559 extern void nfsreq_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
560 extern const u_char * ns_nprint (netdissect_options *, register const u_char *, register const u_char *);
561 extern void ns_print(netdissect_options *, const u_char *, u_int, int);
562 extern void nsh_print(netdissect_options *ndo, const u_char *bp, u_int len);
563 extern void ntp_print(netdissect_options *, const u_char *, u_int);
564 extern void oam_print(netdissect_options *, const u_char *, u_int, u_int);
565 extern void olsr_print(netdissect_options *, const u_char *, u_int, int);
566 extern void openflow_print(netdissect_options *, const u_char *, const u_int);
567 extern void ospf6_print(netdissect_options *, const u_char *, u_int);
568 extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *);
569 extern int ospf_print_grace_lsa(netdissect_options *, const uint8_t *, u_int);
570 extern int ospf_print_te_lsa(netdissect_options *, const uint8_t *, u_int);
571 extern void otv_print(netdissect_options *, const u_char *, u_int);
572 extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
573 extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *);
574 extern void pimv1_print(netdissect_options *, const u_char *, u_int);
575 extern u_int ppp_print(netdissect_options *, register const u_char *, u_int);
576 extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
577 extern void pptp_print(netdissect_options *, const u_char *);
578 extern int print_unknown_data(netdissect_options *, const u_char *, const char *, int);
579 extern char *q922_string(netdissect_options *, const u_char *, u_int);
580 extern void q933_print(netdissect_options *, const u_char *, u_int);
581 extern void radius_print(netdissect_options *, const u_char *, u_int);
582 extern void resp_print(netdissect_options *, const u_char *, u_int);
583 extern void rip_print(netdissect_options *, const u_char *, u_int);
584 extern void ripng_print(netdissect_options *, const u_char *, unsigned int);
585 extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
586 extern void rrcp_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *, const struct lladdr_info *);
587 extern void rsvp_print(netdissect_options *, const u_char *, u_int);
588 extern int rt6_print(netdissect_options *, const u_char *, const u_char *);
589 extern void rtsp_print(netdissect_options *, const u_char *, u_int);
590 extern void rx_print(netdissect_options *, register const u_char *, int, int, int, const u_char *);
591 extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int);
592 extern void sflow_print(netdissect_options *, const u_char *, u_int);
593 extern void sip_print(netdissect_options *, const u_char *, u_int);
594 extern void slow_print(netdissect_options *, const u_char *, u_int);
595 extern void smb_print_data(netdissect_options *, const unsigned char *, int);
596 extern void smb_tcp_print(netdissect_options *, const u_char *, int);
597 extern void smtp_print(netdissect_options *, const u_char *, u_int);
598 extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *, u_int);
599 extern void snmp_print(netdissect_options *, const u_char *, u_int);
600 extern void stp_print(netdissect_options *, const u_char *, u_int);
601 extern void sunrpcrequest_print(netdissect_options *, const u_char *, u_int, const u_char *);
602 extern void syslog_print(netdissect_options *, const u_char *, u_int);
603 extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
604 extern void telnet_print(netdissect_options *, const u_char *, u_int);
605 extern void tftp_print(netdissect_options *, const u_char *, u_int);
606 extern void timed_print(netdissect_options *, const u_char *);
607 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
608 extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
609 extern void udld_print(netdissect_options *, const u_char *, u_int);
610 extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
611 extern int vjc_print(netdissect_options *, register const char *, u_short);
612 extern void vqp_print(netdissect_options *, register const u_char *, register u_int);
613 extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
614 extern void vtp_print(netdissect_options *, const u_char *, u_int);
615 extern void vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len);
616 extern void vxlan_print(netdissect_options *, const u_char *, u_int);
617 extern void wb_print(netdissect_options *, const void *, u_int);
618 extern void zephyr_print(netdissect_options *, const u_char *, int);
619 extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
620 extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
621 
622 /* checksum routines */
623 extern void init_checksum(void);
624 extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
625 extern uint16_t create_osi_cksum(const uint8_t *, int, int);
626 
627 struct cksum_vec {
628 	const uint8_t	*ptr;
629 	int		len;
630 };
631 extern uint16_t in_cksum(const struct cksum_vec *, int);
632 extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
633 
634 extern int nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, u_int);
635 
636 /* in print-ip6.c */
637 extern int nextproto6_cksum(netdissect_options *, const struct ip6_hdr *, const uint8_t *, u_int, u_int, u_int);
638 
639 /* Utilities */
640 extern int mask2plen(uint32_t);
641 extern int mask62plen(const u_char *);
642 
643 extern const char *dnname_string(netdissect_options *, u_short);
644 extern const char *dnnum_string(netdissect_options *, u_short);
645 
646 extern char *smb_errstr(int, int);
647 extern const char *nt_errstr(uint32_t);
648 
649 extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, u_int);
650 extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, u_int);
651 
652 extern void esp_print_decodesecret(netdissect_options *);
653 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *, int,
654 					     u_char spii[8], u_char spir[8],
655 					     const u_char *, const u_char *);
656 
657 #endif  /* netdissect_h */
658