• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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, const char *format, ...)
86 #ifdef __ATTRIBUTE___FORMAT_OK
87      __attribute__((format (printf, 3, 4)))
88 #endif /* __ATTRIBUTE___FORMAT_OK */
89      ;
90 #endif /* !defined(HAVE_SNPRINTF) */
91 
92 #if !defined(HAVE_VSNPRINTF)
93 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
94 #ifdef __ATTRIBUTE___FORMAT_OK
95      __attribute__((format (printf, 3, 0)))
96 #endif /* __ATTRIBUTE___FORMAT_OK */
97      ;
98 #endif /* !defined(HAVE_VSNPRINTF) */
99 
100 #ifndef HAVE_STRLCAT
101 extern size_t strlcat (char *, const char *, size_t);
102 #endif
103 #ifndef HAVE_STRLCPY
104 extern size_t strlcpy (char *, const char *, size_t);
105 #endif
106 
107 #ifndef HAVE_STRDUP
108 extern char *strdup (const char *str);
109 #endif
110 
111 #ifndef HAVE_STRSEP
112 extern char *strsep(char **, const char *);
113 #endif
114 
115 struct tok {
116 	u_int v;		/* value */
117 	const char *s;		/* string */
118 };
119 
120 extern const char *tok2strbuf(const struct tok *, const char *, u_int,
121 			      char *buf, size_t bufsize);
122 
123 /* tok2str is deprecated */
124 extern const char *tok2str(const struct tok *, const char *, u_int);
125 extern char *bittok2str(const struct tok *, const char *, u_int);
126 extern char *bittok2str_nosep(const struct tok *, const char *, u_int);
127 
128 /* Initialize netdissect. */
129 extern int nd_init(char *, size_t);
130 /* Clean up netdissect. */
131 extern void nd_cleanup(void);
132 
133 /* Do we have libsmi support? */
134 extern int nd_have_smi_support(void);
135 /* Load an SMI module. */
136 extern int nd_load_smi_module(const char *, char *, size_t);
137 /* Flag indicating whether an SMI module has been loaded. */
138 extern int nd_smi_module_loaded;
139 /* Version number of the SMI library, or NULL if we don't have libsmi support. */
140 extern const char *nd_smi_version_string(void);
141 
142 typedef struct netdissect_options netdissect_options;
143 
144 #define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *)
145 
146 typedef u_int (*if_printer) IF_PRINTER_ARGS;
147 
148 struct netdissect_options {
149   int ndo_bflag;		/* print 4 byte ASes in ASDOT notation */
150   int ndo_eflag;		/* print ethernet header */
151   int ndo_fflag;		/* don't translate "foreign" IP address */
152   int ndo_Kflag;		/* don't check TCP checksums */
153   int ndo_nflag;		/* leave addresses as numbers */
154   int ndo_Nflag;		/* remove domains from printed host names */
155   int ndo_qflag;		/* quick (shorter) output */
156   int ndo_Sflag;		/* print raw TCP sequence numbers */
157   int ndo_tflag;		/* print packet arrival time */
158   int ndo_uflag;		/* Print undecoded NFS handles */
159   int ndo_vflag;		/* verbosity level */
160   int ndo_xflag;		/* print packet in hex */
161   int ndo_Xflag;		/* print packet in hex/ascii */
162   int ndo_Aflag;		/* print packet only in ascii observing TAB,
163 				 * LF, CR and SPACE as graphical chars
164 				 */
165   int ndo_Hflag;		/* dissect 802.11s draft mesh standard */
166   int ndo_packet_number;	/* print a packet number in the beginning of line */
167   int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
168   int ndo_tstamp_precision;	/* requested time stamp precision */
169   const char *program_name;	/* Name of the program using the library */
170 
171   char *ndo_espsecret;
172   struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
173   struct sa_list *ndo_sa_default;
174 
175   char *ndo_sigsecret;		/* Signature verification secret key */
176 
177   int   ndo_packettype;	/* as specified by -T */
178 
179   int   ndo_snaplen;
180 
181   /*global pointers to beginning and end of current packet (during printing) */
182   const u_char *ndo_packetp;
183   const u_char *ndo_snapend;
184 
185   /* pointer to the if_printer function */
186   if_printer ndo_if_printer;
187 
188   /* pointer to void function to output stuff */
189   void (*ndo_default_print)(netdissect_options *,
190 			    register const u_char *bp, register u_int length);
191 
192   /* pointer to function to do regular output */
193   int  (*ndo_printf)(netdissect_options *,
194 		     const char *fmt, ...)
195 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
196 		     __attribute__ ((format (printf, 2, 3)))
197 #endif
198 		     ;
199   /* pointer to function to output errors */
200   void (*ndo_error)(netdissect_options *,
201 		    const char *fmt, ...)
202 #ifdef __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS
203 		     __attribute__ ((noreturn))
204 #endif /* __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS */
205 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
206 		     __attribute__ ((format (printf, 2, 3)))
207 #endif /* __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS */
208 		     ;
209   /* pointer to function to output warnings */
210   void (*ndo_warning)(netdissect_options *,
211 		      const char *fmt, ...)
212 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
213 		     __attribute__ ((format (printf, 2, 3)))
214 #endif
215 		     ;
216 };
217 
218 #define PT_VAT		1	/* Visual Audio Tool */
219 #define PT_WB		2	/* distributed White Board */
220 #define PT_RPC		3	/* Remote Procedure Call */
221 #define PT_RTP		4	/* Real-Time Applications protocol */
222 #define PT_RTCP		5	/* Real-Time Applications control protocol */
223 #define PT_SNMP		6	/* Simple Network Management Protocol */
224 #define PT_CNFP		7	/* Cisco NetFlow protocol */
225 #define PT_TFTP		8	/* trivial file transfer protocol */
226 #define PT_AODV		9	/* Ad-hoc On-demand Distance Vector Protocol */
227 #define PT_CARP		10	/* Common Address Redundancy Protocol */
228 #define PT_RADIUS	11	/* RADIUS authentication Protocol */
229 #define PT_ZMTP1	12	/* ZeroMQ Message Transport Protocol 1.0 */
230 #define PT_VXLAN	13	/* Virtual eXtensible Local Area Network */
231 #define PT_PGM		14	/* [UDP-encapsulated] Pragmatic General Multicast */
232 #define PT_PGM_ZMTP1	15	/* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
233 #define PT_LMP		16	/* Link Management Protocol */
234 #define PT_RESP		17	/* RESP */
235 
236 #ifndef min
237 #define min(a,b) ((a)>(b)?(b):(a))
238 #endif
239 #ifndef max
240 #define max(a,b) ((b)>(a)?(b):(a))
241 #endif
242 
243 /* For source or destination ports tests (UDP, TCP, ...) */
244 #define IS_SRC_OR_DST_PORT(p) (sport == (p) || dport == (p))
245 
246 /*
247  * Maximum snapshot length.  This should be enough to capture the full
248  * packet on most network interfaces.
249  *
250  *
251  * Somewhat arbitrary, but chosen to be:
252  *
253  *    1) big enough for maximum-size Linux loopback packets (65549)
254  *       and some USB packets captured with USBPcap:
255  *
256  *           http://desowin.org/usbpcap/
257  *
258  *       (> 131072, < 262144)
259  *
260  * and
261  *
262  *    2) small enough not to cause attempts to allocate huge amounts of
263  *       memory; some applications might use the snapshot length in a
264  *       savefile header to control the size of the buffer they allocate,
265  *       so a size of, say, 2^31-1 might not work well.
266  *
267  * XXX - does it need to be bigger still?
268  */
269 #define MAXIMUM_SNAPLEN	262144
270 
271 /*
272  * The default snapshot length is the maximum.
273  */
274 #define DEFAULT_SNAPLEN	MAXIMUM_SNAPLEN
275 
276 #define ESRC(ep) ((ep)->ether_shost)
277 #define EDST(ep) ((ep)->ether_dhost)
278 
279 #ifndef NTOHL
280 #define NTOHL(x)	(x) = ntohl(x)
281 #define NTOHS(x)	(x) = ntohs(x)
282 #define HTONL(x)	(x) = htonl(x)
283 #define HTONS(x)	(x) = htons(x)
284 #endif
285 
286 /*
287  * True if "l" bytes of "var" were captured.
288  *
289  * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
290  * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
291  *
292  * The check is for <= rather than < because "l" might be 0.
293  *
294  * We cast the pointers to uintptr_t to make sure that the compiler
295  * doesn't optimize away any of these tests (which it is allowed to
296  * do, as adding an integer to, or subtracting an integer from, a
297  * pointer assumes that the pointer is a pointer to an element of an
298  * array and that the result of the addition or subtraction yields a
299  * pointer to another member of the array, so that, for example, if
300  * you subtract a positive integer from a pointer, the result is
301  * guaranteed to be less than the original pointer value). See
302  *
303  *	http://www.kb.cert.org/vuls/id/162289
304  */
305 
306 /*
307  * Test in two parts to avoid these warnings:
308  * comparison of unsigned expression >= 0 is always true [-Wtype-limits],
309  * comparison is always true due to limited range of data type [-Wtype-limits].
310  */
311 #define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0))
312 
313 #define ND_TTEST2(var, l) \
314   (IS_NOT_NEGATIVE(l) && \
315 	((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \
316          (uintptr_t)&(var) <= (uintptr_t)ndo->ndo_snapend - (l)))
317 
318 /* True if "var" was captured */
319 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
320 
321 /* Bail if "l" bytes of "var" were not captured */
322 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
323 
324 /* Bail if "var" was not captured */
325 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
326 
327 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
328 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
329 
330 extern void ts_print(netdissect_options *, const struct timeval *);
331 extern void signed_relts_print(netdissect_options *, int32_t);
332 extern void unsigned_relts_print(netdissect_options *, uint32_t);
333 
334 extern void fn_print_char(netdissect_options *, u_char);
335 extern int fn_print(netdissect_options *, const u_char *, const u_char *);
336 extern u_int fn_printztn(netdissect_options *ndo, const u_char *, u_int, const u_char *);
337 extern int fn_printn(netdissect_options *, const u_char *, u_int, const u_char *);
338 extern int fn_printzp(netdissect_options *, const u_char *, u_int, const u_char *);
339 
340 /*
341  * Flags for txtproto_print().
342  */
343 #define RESP_CODE_SECOND_TOKEN	0x00000001	/* response code is second token in response line */
344 
345 extern void txtproto_print(netdissect_options *, const u_char *, u_int,
346     const char *, const char **, u_int);
347 
348 /*
349  * Locale-independent macros for testing character properties and
350  * stripping the 8th bit from characters.  Assumed to be handed
351  * a value between 0 and 255, i.e. don't hand them a char, as
352  * those might be in the range -128 to 127.
353  */
354 #define ND_ISASCII(c)	(!((c) & 0x80))	/* value is an ASCII code point */
355 #define ND_ISPRINT(c)	((c) >= 0x20 && (c) <= 0x7E)
356 #define ND_ISGRAPH(c)	((c) > 0x20 && (c) <= 0x7E)
357 #define ND_TOASCII(c)	((c) & 0x7F)
358 
359 extern void safeputchar(netdissect_options *, const u_char);
360 extern void safeputs(netdissect_options *, const u_char *, const u_int);
361 
362 #ifdef LBL_ALIGN
363 /*
364  * The processor doesn't natively handle unaligned loads,
365  * and the compiler might "helpfully" optimize memcpy()
366  * and memcmp(), when handed pointers that would normally
367  * be properly aligned, into sequences that assume proper
368  * alignment.
369  *
370  * Do copies and compares of possibly-unaligned data by
371  * calling routines that wrap memcpy() and memcmp(), to
372  * prevent that optimization.
373  */
374 extern void unaligned_memcpy(void *, const void *, size_t);
375 extern int unaligned_memcmp(const void *, const void *, size_t);
376 #define UNALIGNED_MEMCPY(p, q, l)	unaligned_memcpy((p), (q), (l))
377 #define UNALIGNED_MEMCMP(p, q, l)	unaligned_memcmp((p), (q), (l))
378 #else
379 /*
380  * The procesor natively handles unaligned loads, so just use memcpy()
381  * and memcmp(), to enable those optimizations.
382  */
383 #define UNALIGNED_MEMCPY(p, q, l)	memcpy((p), (q), (l))
384 #define UNALIGNED_MEMCMP(p, q, l)	memcmp((p), (q), (l))
385 #endif
386 
387 #define PLURAL_SUFFIX(n) \
388 	(((n) != 1) ? "s" : "")
389 
390 extern const char *tok2strary_internal(const char **, int, const char *, int);
391 #define	tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
392 
393 extern if_printer lookup_printer(int);
394 
395 /* The DLT printer routines */
396 
397 extern u_int ap1394_if_print IF_PRINTER_ARGS;
398 extern u_int arcnet_if_print IF_PRINTER_ARGS;
399 extern u_int arcnet_linux_if_print IF_PRINTER_ARGS;
400 extern u_int atm_if_print IF_PRINTER_ARGS;
401 extern u_int bt_if_print IF_PRINTER_ARGS;
402 extern u_int chdlc_if_print IF_PRINTER_ARGS;
403 extern u_int cip_if_print IF_PRINTER_ARGS;
404 extern u_int enc_if_print IF_PRINTER_ARGS;
405 extern u_int ether_if_print IF_PRINTER_ARGS;
406 extern u_int fddi_if_print IF_PRINTER_ARGS;
407 extern u_int fr_if_print IF_PRINTER_ARGS;
408 extern u_int ieee802_11_if_print IF_PRINTER_ARGS;
409 extern u_int ieee802_11_radio_avs_if_print IF_PRINTER_ARGS;
410 extern u_int ieee802_11_radio_if_print IF_PRINTER_ARGS;
411 extern u_int ieee802_15_4_if_print IF_PRINTER_ARGS;
412 extern u_int ipfc_if_print IF_PRINTER_ARGS;
413 extern u_int ipnet_if_print IF_PRINTER_ARGS;
414 extern u_int juniper_atm1_print IF_PRINTER_ARGS;
415 extern u_int juniper_atm2_print IF_PRINTER_ARGS;
416 extern u_int juniper_chdlc_print IF_PRINTER_ARGS;
417 extern u_int juniper_es_print IF_PRINTER_ARGS;
418 extern u_int juniper_ether_print IF_PRINTER_ARGS;
419 extern u_int juniper_frelay_print IF_PRINTER_ARGS;
420 extern u_int juniper_ggsn_print IF_PRINTER_ARGS;
421 extern u_int juniper_mfr_print IF_PRINTER_ARGS;
422 extern u_int juniper_mlfr_print IF_PRINTER_ARGS;
423 extern u_int juniper_mlppp_print IF_PRINTER_ARGS;
424 extern u_int juniper_monitor_print IF_PRINTER_ARGS;
425 extern u_int juniper_ppp_print IF_PRINTER_ARGS;
426 extern u_int juniper_pppoe_atm_print IF_PRINTER_ARGS;
427 extern u_int juniper_pppoe_print IF_PRINTER_ARGS;
428 extern u_int juniper_services_print IF_PRINTER_ARGS;
429 extern u_int lane_if_print IF_PRINTER_ARGS;
430 extern u_int ltalk_if_print IF_PRINTER_ARGS;
431 extern u_int mfr_if_print IF_PRINTER_ARGS;
432 extern u_int netanalyzer_if_print IF_PRINTER_ARGS;
433 extern u_int netanalyzer_transparent_if_print IF_PRINTER_ARGS;
434 extern u_int nflog_if_print IF_PRINTER_ARGS;
435 extern u_int null_if_print IF_PRINTER_ARGS;
436 extern u_int pflog_if_print IF_PRINTER_ARGS;
437 extern u_int pktap_if_print IF_PRINTER_ARGS;
438 extern u_int ppi_if_print IF_PRINTER_ARGS;
439 extern u_int ppp_bsdos_if_print IF_PRINTER_ARGS;
440 extern u_int ppp_hdlc_if_print IF_PRINTER_ARGS;
441 extern u_int ppp_if_print IF_PRINTER_ARGS;
442 extern u_int pppoe_if_print IF_PRINTER_ARGS;
443 extern u_int prism_if_print IF_PRINTER_ARGS;
444 extern u_int raw_if_print IF_PRINTER_ARGS;
445 extern u_int sl_bsdos_if_print IF_PRINTER_ARGS;
446 extern u_int sl_if_print IF_PRINTER_ARGS;
447 extern u_int sll_if_print IF_PRINTER_ARGS;
448 extern u_int sunatm_if_print IF_PRINTER_ARGS;
449 extern u_int symantec_if_print IF_PRINTER_ARGS;
450 extern u_int token_if_print IF_PRINTER_ARGS;
451 extern u_int usb_linux_48_byte_print IF_PRINTER_ARGS;
452 extern u_int usb_linux_64_byte_print IF_PRINTER_ARGS;
453 
454 /*
455  * Structure passed to some printers to allow them to print
456  * link-layer address information if ndo_eflag isn't set
457  * (because they are for protocols that don't have their
458  * own addresses, so that we'd want to report link-layer
459  * address information).
460  *
461  * This contains a pointer to an address and a pointer to a routine
462  * to which we pass that pointer in order to get a string.
463  */
464 struct lladdr_info {
465 	const char *(*addr_string)(netdissect_options *, const u_char *);
466 	const u_char *addr;
467 };
468 
469 /* The printer routines. */
470 
471 extern void aarp_print(netdissect_options *, const u_char *, u_int);
472 extern int ah_print(netdissect_options *, register const u_char *);
473 extern void ahcp_print(netdissect_options *, const u_char *, const u_int);
474 extern void aodv_print(netdissect_options *, const u_char *, u_int, int);
475 extern void aoe_print(netdissect_options *, const u_char *, const u_int);
476 extern void arp_print(netdissect_options *, const u_char *, u_int, u_int);
477 extern void ascii_print(netdissect_options *, const u_char *, u_int);
478 extern void atalk_print(netdissect_options *, const u_char *, u_int);
479 extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
480 extern void babel_print(netdissect_options *, const u_char *, u_int);
481 extern void beep_print(netdissect_options *, const u_char *, u_int);
482 extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int);
483 extern void bgp_print(netdissect_options *, const u_char *, int);
484 extern char *bgp_vpn_rd_print (netdissect_options *, const u_char *);
485 extern void bootp_print(netdissect_options *, const u_char *, u_int);
486 extern void calm_fast_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
487 extern void carp_print(netdissect_options *, const u_char *, u_int, int);
488 extern void cdp_print(netdissect_options *, const u_char *, u_int, u_int);
489 extern void cfm_print(netdissect_options *, const u_char *, u_int);
490 extern u_int chdlc_print(netdissect_options *, register const u_char *, u_int);
491 extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int);
492 extern void cnfp_print(netdissect_options *, const u_char *);
493 extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
494 extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int);
495 extern void dhcp6_print(netdissect_options *, const u_char *, u_int);
496 extern int dstopt_print(netdissect_options *, const u_char *);
497 extern void dtp_print(netdissect_options *, const u_char *, u_int);
498 extern void dvmrp_print(netdissect_options *, const u_char *, u_int);
499 extern void eap_print(netdissect_options *, const u_char *, u_int);
500 extern void egp_print(netdissect_options *, const u_char *, u_int);
501 extern void eigrp_print(netdissect_options *, const u_char *, u_int);
502 extern int esp_print(netdissect_options *, const u_char *, const int, const u_char *, int *, int *);
503 extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *);
504 extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
505 extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int);
506 extern void forces_print(netdissect_options *, const u_char *, u_int);
507 extern u_int fr_print(netdissect_options *, register const u_char *, u_int);
508 extern int frag6_print(netdissect_options *, const u_char *, const u_char *);
509 extern void ftp_print(netdissect_options *, const u_char *, u_int);
510 extern void geneve_print(netdissect_options *, const u_char *, u_int);
511 extern void geonet_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *);
512 extern void gre_print(netdissect_options *, const u_char *, u_int);
513 extern int hbhopt_print(netdissect_options *, const u_char *);
514 extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int);
515 extern void hex_and_ascii_print_with_offset(netdissect_options *, const char *, const u_char *, u_int, u_int);
516 extern void hex_print(netdissect_options *, const char *ident, const u_char *cp, u_int);
517 extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp, u_int, u_int);
518 extern void hncp_print(netdissect_options *, const u_char *, u_int);
519 extern void hsrp_print(netdissect_options *, const u_char *, u_int);
520 extern void http_print(netdissect_options *, const u_char *, u_int);
521 extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
522 extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
523 extern void igmp_print(netdissect_options *, const u_char *, u_int);
524 extern void igrp_print(netdissect_options *, const u_char *, u_int);
525 extern void ip6_print(netdissect_options *, const u_char *, u_int);
526 extern void ipN_print(netdissect_options *, const u_char *, u_int);
527 extern void ip_print(netdissect_options *, const u_char *, u_int);
528 extern void ip_print_inner(netdissect_options *, const u_char *, u_int, u_int nh, const u_char *);
529 extern void ipcomp_print(netdissect_options *, register const u_char *);
530 extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int);
531 extern void ipx_print(netdissect_options *, const u_char *, u_int);
532 extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *);
533 extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *);
534 extern void isoclns_print(netdissect_options *, const u_char *, u_int, u_int);
535 extern void krb_print(netdissect_options *, const u_char *);
536 extern void l2tp_print(netdissect_options *, const u_char *, u_int);
537 extern void lane_print(netdissect_options *, const u_char *, u_int, u_int);
538 extern void ldp_print(netdissect_options *, const u_char *, u_int);
539 extern void lisp_print(netdissect_options *, const u_char *, u_int);
540 extern u_int llap_print(netdissect_options *, const u_char *, u_int);
541 extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
542 extern void lldp_print(netdissect_options *, const u_char *, u_int);
543 extern void lmp_print(netdissect_options *, const u_char *, u_int);
544 extern void loopback_print(netdissect_options *, const u_char *, const u_int);
545 extern void lspping_print(netdissect_options *, const u_char *, u_int);
546 extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
547 extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
548 extern void lwres_print(netdissect_options *, const u_char *, u_int);
549 extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
550 extern void medsa_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *);
551 extern u_int mfr_print(netdissect_options *, register const u_char *, u_int);
552 extern void mobile_print(netdissect_options *, const u_char *, u_int);
553 extern int mobility_print(netdissect_options *, const u_char *, const u_char *);
554 extern void mpcp_print(netdissect_options *, const u_char *, u_int);
555 extern void mpls_print(netdissect_options *, const u_char *, u_int);
556 extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
557 extern void msdp_print(netdissect_options *, const u_char *, u_int);
558 extern void msnlb_print(netdissect_options *, const u_char *);
559 extern void nbt_tcp_print(netdissect_options *, const u_char *, int);
560 extern void nbt_udp137_print(netdissect_options *, const u_char *, int);
561 extern void nbt_udp138_print(netdissect_options *, const u_char *, int);
562 extern void netbeui_print(netdissect_options *, u_short, const u_char *, int);
563 extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *);
564 extern void nfsreply_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
565 extern void nfsreq_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
566 extern const u_char * ns_nprint (netdissect_options *, register const u_char *, register const u_char *);
567 extern void ns_print(netdissect_options *, const u_char *, u_int, int);
568 extern void nsh_print(netdissect_options *ndo, const u_char *bp, u_int len);
569 extern void ntp_print(netdissect_options *, const u_char *, u_int);
570 extern void oam_print(netdissect_options *, const u_char *, u_int, u_int);
571 extern void olsr_print(netdissect_options *, const u_char *, u_int, int);
572 extern void openflow_print(netdissect_options *, const u_char *, const u_int);
573 extern void ospf6_print(netdissect_options *, const u_char *, u_int);
574 extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *);
575 extern int ospf_print_grace_lsa(netdissect_options *, const uint8_t *, u_int);
576 extern int ospf_print_te_lsa(netdissect_options *, const uint8_t *, u_int);
577 extern void otv_print(netdissect_options *, const u_char *, u_int);
578 extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
579 extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *);
580 extern void pimv1_print(netdissect_options *, const u_char *, u_int);
581 extern u_int ppp_print(netdissect_options *, register const u_char *, u_int);
582 extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
583 extern void pptp_print(netdissect_options *, const u_char *);
584 extern int print_unknown_data(netdissect_options *, const u_char *, const char *, int);
585 extern char *q922_string(netdissect_options *, const u_char *, u_int);
586 extern void q933_print(netdissect_options *, const u_char *, u_int);
587 extern void radius_print(netdissect_options *, const u_char *, u_int);
588 extern void resp_print(netdissect_options *, const u_char *, u_int);
589 extern void rip_print(netdissect_options *, const u_char *, u_int);
590 extern void ripng_print(netdissect_options *, const u_char *, unsigned int);
591 extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
592 extern void rrcp_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *, const struct lladdr_info *);
593 extern void rsvp_print(netdissect_options *, const u_char *, u_int);
594 extern int rt6_print(netdissect_options *, const u_char *, const u_char *);
595 extern void rtsp_print(netdissect_options *, const u_char *, u_int);
596 extern void rx_print(netdissect_options *, register const u_char *, int, int, int, const u_char *);
597 extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int);
598 extern void sflow_print(netdissect_options *, const u_char *, u_int);
599 extern void sip_print(netdissect_options *, const u_char *, u_int);
600 extern void slow_print(netdissect_options *, const u_char *, u_int);
601 extern void smb_print_data(netdissect_options *, const unsigned char *, int);
602 extern void smb_tcp_print(netdissect_options *, const u_char *, int);
603 extern void smtp_print(netdissect_options *, const u_char *, u_int);
604 extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *, u_int);
605 extern void snmp_print(netdissect_options *, const u_char *, u_int);
606 extern void stp_print(netdissect_options *, const u_char *, u_int);
607 extern void sunrpcrequest_print(netdissect_options *, const u_char *, u_int, const u_char *);
608 extern void syslog_print(netdissect_options *, const u_char *, u_int);
609 extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
610 extern void telnet_print(netdissect_options *, const u_char *, u_int);
611 extern void tftp_print(netdissect_options *, const u_char *, u_int);
612 extern void timed_print(netdissect_options *, const u_char *);
613 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
614 extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
615 extern void udld_print(netdissect_options *, const u_char *, u_int);
616 extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
617 extern int vjc_print(netdissect_options *, register const char *, u_short);
618 extern void vqp_print(netdissect_options *, register const u_char *, register u_int);
619 extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
620 extern void vtp_print(netdissect_options *, const u_char *, u_int);
621 extern void vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len);
622 extern void vxlan_print(netdissect_options *, const u_char *, u_int);
623 extern void wb_print(netdissect_options *, const void *, u_int);
624 extern void zephyr_print(netdissect_options *, const u_char *, int);
625 extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
626 extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
627 
628 /* checksum routines */
629 extern void init_checksum(void);
630 extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
631 extern uint16_t create_osi_cksum(const uint8_t *, int, int);
632 
633 struct cksum_vec {
634 	const uint8_t	*ptr;
635 	int		len;
636 };
637 extern uint16_t in_cksum(const struct cksum_vec *, int);
638 extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
639 
640 extern int nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, u_int);
641 
642 /* in print-ip6.c */
643 extern int nextproto6_cksum(netdissect_options *, const struct ip6_hdr *, const uint8_t *, u_int, u_int, u_int);
644 
645 /* Utilities */
646 extern int mask2plen(uint32_t);
647 extern int mask62plen(const u_char *);
648 
649 extern const char *dnname_string(netdissect_options *, u_short);
650 extern const char *dnnum_string(netdissect_options *, u_short);
651 
652 extern char *smb_errstr(int, int);
653 extern const char *nt_errstr(uint32_t);
654 
655 extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, u_int);
656 extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, u_int);
657 
658 extern void esp_print_decodesecret(netdissect_options *);
659 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *, int,
660 					     u_char spii[8], u_char spir[8],
661 					     const u_char *, const u_char *);
662 
663 #endif  /* netdissect_h */
664