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

   1 /*
   2  * Copyright (c) 1988-1997
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Copyright (c) 1998-2012  Michael Richardson <mcr@tcpdump.org>
   6  *      The TCPDUMP project
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that: (1) source code distributions
  10  * retain the above copyright notice and this paragraph in its entirety, (2)
  11  * distributions including binary code include the above copyright notice and
  12  * this paragraph in its entirety in the documentation or other materials
  13  * provided with the distribution, and (3) all advertising materials mentioning
  14  * features or use of this software display the following acknowledgement:
  15  * ``This product includes software developed by the University of California,
  16  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  17  * the University nor the names of its contributors may be used to endorse
  18  * or promote products derived from this software without specific prior
  19  * written permission.
  20  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  21  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  22  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  23  */
  24
  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 /* snprintf et al */
  38
  39 #include <stdarg.h>
  40 #include <pcap.h>
  41
  42 #include "ip.h" /* struct ip for nextproto4_cksum() */
  43
  44 extern int32_t thiszone;        /* seconds offset from gmt to local time */
  45
  46 #if !defined(HAVE_SNPRINTF)
  47 int snprintf (char *str, size_t sz, const char *format, ...)
  48 #ifdef __ATTRIBUTE___FORMAT_OK
  49      __attribute__((format (printf, 3, 4)))
  50 #endif /* __ATTRIBUTE___FORMAT_OK */
  51      ;
  52 #endif /* !defined(HAVE_SNPRINTF) */
  53
  54 #if !defined(HAVE_VSNPRINTF)
  55 int vsnprintf (char *str, size_t sz, const char *format, va_list ap)
  56 #ifdef __ATTRIBUTE___FORMAT_OK
  57      __attribute__((format (printf, 3, 0)))
  58 #endif /* __ATTRIBUTE___FORMAT_OK */
  59      ;
  60 #endif /* !defined(HAVE_VSNPRINTF) */
  61
  62 #ifndef HAVE_STRLCAT
  63 extern size_t strlcat (char *, const char *, size_t);
  64 #endif
  65 #ifndef HAVE_STRLCPY
  66 extern size_t strlcpy (char *, const char *, size_t);
  67 #endif
  68
  69 #ifndef HAVE_STRDUP
  70 extern char *strdup (const char *str);
  71 #endif
  72
  73 #ifndef HAVE_STRSEP
  74 extern char *strsep(char **, const char *);
  75 #endif
  76
  77 struct tok {
  78         u_int v;                /* value */
  79         const char *s;          /* string */
  80 };
  81
  82 extern const char *tok2strbuf(const struct tok *, const char *, u_int,
  83                               char *buf, size_t bufsize);
  84
  85 /* tok2str is deprecated */
  86 extern const char *tok2str(const struct tok *, const char *, u_int);
  87 extern char *bittok2str(const struct tok *, const char *, u_int);
  88 extern char *bittok2str_nosep(const struct tok *, const char *, u_int);
  89
  90 typedef struct netdissect_options netdissect_options;
  91
  92 #define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *)
  93
  94 typedef u_int (*if_printer) IF_PRINTER_ARGS;
  95
  96 struct netdissect_options {
  97   int ndo_bflag;                /* print 4 byte ASes in ASDOT notation */
  98   int ndo_eflag;                /* print ethernet header */
  99   int ndo_fflag;                /* don't translate "foreign" IP address */
 100   int ndo_Kflag;                /* don't check TCP checksums */
 101   int ndo_nflag;                /* leave addresses as numbers */
 102   int ndo_Nflag;                /* remove domains from printed host names */
 103   int ndo_qflag;                /* quick (shorter) output */
 104   int ndo_mflag;                /* use the libsmi to translate OIDs */
 105   int ndo_Sflag;                /* print raw TCP sequence numbers */
 106   int ndo_tflag;                /* print packet arrival time */
 107   int ndo_uflag;                /* Print undecoded NFS handles */
 108   int ndo_vflag;                /* verbosity level */
 109   int ndo_xflag;                /* print packet in hex */
 110   int ndo_Xflag;                /* print packet in hex/ascii */
 111   int ndo_Aflag;                /* print packet only in ascii observing TAB,
 112                                  * LF, CR and SPACE as graphical chars
 113                                  */
 114   int ndo_Hflag;                /* dissect 802.11s draft mesh standard */
 115   int ndo_packet_number;        /* print a packet number in the beginning of line */
 116   int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */
 117   int ndo_tstamp_precision;     /* requested time stamp precision */
 118   const char *program_name;     /* Name of the program using the library */
 119
 120   char *ndo_espsecret;
 121   struct sa_list *ndo_sa_list_head;  /* used by print-esp.c */
 122   struct sa_list *ndo_sa_default;
 123
 124   char *ndo_sigsecret;          /* Signature verification secret key */
 125
 126   int   ndo_packettype; /* as specified by -T */
 127
 128   int   ndo_snaplen;
 129
 130   /*global pointers to beginning and end of current packet (during printing) */
 131   const u_char *ndo_packetp;
 132   const u_char *ndo_snapend;
 133
 134   /* pointer to the if_printer function */
 135   if_printer ndo_if_printer;
 136
 137   /* pointer to void function to output stuff */
 138   void (*ndo_default_print)(netdissect_options *,
 139                             register const u_char *bp, register u_int length);
 140
 141   /* pointer to function to do regular output */
 142   int  (*ndo_printf)(netdissect_options *,
 143                      const char *fmt, ...)
 144 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 145                      __attribute__ ((format (printf, 2, 3)))
 146 #endif
 147                      ;
 148   /* pointer to function to output errors */
 149   void (*ndo_error)(netdissect_options *,
 150                     const char *fmt, ...)
 151 #ifdef __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS
 152                      __attribute__ ((noreturn))
 153 #endif /* __ATTRIBUTE___NORETURN_OK_FOR_FUNCTION_POINTERS */
 154 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 155                      __attribute__ ((format (printf, 2, 3)))
 156 #endif /* __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS */
 157                      ;
 158   /* pointer to function to output warnings */
 159   void (*ndo_warning)(netdissect_options *,
 160                       const char *fmt, ...)
 161 #ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS
 162                      __attribute__ ((format (printf, 2, 3)))
 163 #endif
 164                      ;
 165 };
 166
 167 #define PT_VAT          1       /* Visual Audio Tool */
 168 #define PT_WB           2       /* distributed White Board */
 169 #define PT_RPC          3       /* Remote Procedure Call */
 170 #define PT_RTP          4       /* Real-Time Applications protocol */
 171 #define PT_RTCP         5       /* Real-Time Applications control protocol */
 172 #define PT_SNMP         6       /* Simple Network Management Protocol */
 173 #define PT_CNFP         7       /* Cisco NetFlow protocol */
 174 #define PT_TFTP         8       /* trivial file transfer protocol */
 175 #define PT_AODV         9       /* Ad-hoc On-demand Distance Vector Protocol */
 176 #define PT_CARP         10      /* Common Address Redundancy Protocol */
 177 #define PT_RADIUS       11      /* RADIUS authentication Protocol */
 178 #define PT_ZMTP1        12      /* ZeroMQ Message Transport Protocol 1.0 */
 179 #define PT_VXLAN        13      /* Virtual eXtensible Local Area Network */
 180 #define PT_PGM          14      /* [UDP-encapsulated] Pragmatic General Multicast */
 181 #define PT_PGM_ZMTP1    15      /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */
 182 #define PT_LMP          16      /* Link Management Protocol */
 183
 184 #ifndef min
 185 #define min(a,b) ((a)>(b)?(b):(a))
 186 #endif
 187 #ifndef max
 188 #define max(a,b) ((b)>(a)?(b):(a))
 189 #endif
 190
 191 /*
 192  * Maximum snapshot length.  This should be enough to capture the full
 193  * packet on most network interfaces.
 194  *
 195  *
 196  * Somewhat arbitrary, but chosen to be:
 197  *
 198  *    1) big enough for maximum-size Linux loopback packets (65549)
 199  *       and some USB packets captured with USBPcap:
 200  *
 201  *           http://desowin.org/usbpcap/
 202  *
 203  *       (> 131072, < 262144)
 204  *
 205  * and
 206  *
 207  *    2) small enough not to cause attempts to allocate huge amounts of
 208  *       memory; some applications might use the snapshot length in a
 209  *       savefile header to control the size of the buffer they allocate,
 210  *       so a size of, say, 2^31-1 might not work well.
 211  *
 212  * XXX - does it need to be bigger still?
 213  */
 214 #define MAXIMUM_SNAPLEN 262144
 215
 216 /*
 217  * The default snapshot length is the maximum.
 218  */
 219 #define DEFAULT_SNAPLEN MAXIMUM_SNAPLEN
 220
 221 #define ESRC(ep) ((ep)->ether_shost)
 222 #define EDST(ep) ((ep)->ether_dhost)
 223
 224 #ifndef NTOHL
 225 #define NTOHL(x)        (x) = ntohl(x)
 226 #define NTOHS(x)        (x) = ntohs(x)
 227 #define HTONL(x)        (x) = htonl(x)
 228 #define HTONS(x)        (x) = htons(x)
 229 #endif
 230
 231 /*
 232  * True if "l" bytes of "var" were captured.
 233  *
 234  * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure
 235  * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows.
 236  *
 237  * The check is for <= rather than < because "l" might be 0.
 238  *
 239  * We cast the pointers to uintptr_t to make sure that the compiler
 240  * doesn't optimize away any of these tests (which it is allowed to
 241  * do, as adding an integer to, or subtracting an integer from, a
 242  * pointer assumes that the pointer is a pointer to an element of an
 243  * array and that the result of the addition or subtraction yields a
 244  * pointer to another member of the array, so that, for example, if
 245  * you subtract a positive integer from a pointer, the result is
 246  * guaranteed to be less than the original pointer value). See
 247  *
 248  *      http://www.kb.cert.org/vuls/id/162289
 249  */
 250
 251 /*
 252  * Test in two parts to avoid these warnings:
 253  * comparison of unsigned expression >= 0 is always true [-Wtype-limits],
 254  * comparison is always true due to limited range of data type [-Wtype-limits].
 255  */
 256 #define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0))
 257
 258 #define ND_TTEST2(var, l) \
 259   (IS_NOT_NEGATIVE(l) && \
 260         ((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \
 261          (uintptr_t)&(var) <= (uintptr_t)ndo->ndo_snapend - (l)))
 262
 263 /* True if "var" was captured */
 264 #define ND_TTEST(var) ND_TTEST2(var, sizeof(var))
 265
 266 /* Bail if "l" bytes of "var" were not captured */
 267 #define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc
 268
 269 /* Bail if "var" was not captured */
 270 #define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var))
 271
 272 #define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF
 273 #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length)
 274
 275 extern void ts_print(netdissect_options *, const struct timeval *);
 276 extern void relts_print(netdissect_options *, int);
 277
 278 extern int fn_print(netdissect_options *, const u_char *, const u_char *);
 279 extern int fn_printn(netdissect_options *, const u_char *, u_int, const u_char *);
 280 extern int fn_printzp(netdissect_options *, const u_char *, u_int, const u_char *);
 281
 282 /*
 283  * Flags for txtproto_print().
 284  */
 285 #define RESP_CODE_SECOND_TOKEN  0x00000001      /* response code is second token in response line */
 286
 287 extern void txtproto_print(netdissect_options *, const u_char *, u_int,
 288     const char *, const char **, u_int);
 289
 290 /*
 291  * Locale-independent macros for testing character properties and
 292  * stripping the 8th bit from characters.  Assumed to be handed
 293  * a value between 0 and 255, i.e. don't hand them a char, as
 294  * those might be in the range -128 to 127.
 295  */
 296 #define ND_ISASCII(c)   (!((c) & 0x80)) /* value is an ASCII code point */
 297 #define ND_ISPRINT(c)   ((c) >= 0x20 && (c) <= 0x7E)
 298 #define ND_ISGRAPH(c)   ((c) > 0x20 && (c) <= 0x7E)
 299 #define ND_TOASCII(c)   ((c) & 0x7F)
 300
 301 extern void safeputchar(netdissect_options *, const u_char);
 302 extern void safeputs(netdissect_options *, const u_char *, const u_int);
 303
 304 #ifdef LBL_ALIGN
 305 /*
 306  * The processor doesn't natively handle unaligned loads,
 307  * and the compiler might "helpfully" optimize memcpy()
 308  * and memcmp(), when handed pointers that would normally
 309  * be properly aligned, into sequences that assume proper
 310  * alignment.
 311  *
 312  * Do copies and compares of possibly-unaligned data by
 313  * calling routines that wrap memcpy() and memcmp(), to
 314  * prevent that optimization.
 315  */
 316 extern void unaligned_memcpy(void *, const void *, size_t);
 317 extern int unaligned_memcmp(const void *, const void *, size_t);
 318 #define UNALIGNED_MEMCPY(p, q, l)       unaligned_memcpy((p), (q), (l))
 319 #define UNALIGNED_MEMCMP(p, q, l)       unaligned_memcmp((p), (q), (l))
 320 #else
 321 /*
 322  * The procesor natively handles unaligned loads, so just use memcpy()
 323  * and memcmp(), to enable those optimizations.
 324  */
 325 #define UNALIGNED_MEMCPY(p, q, l)       memcpy((p), (q), (l))
 326 #define UNALIGNED_MEMCMP(p, q, l)       memcmp((p), (q), (l))
 327 #endif
 328
 329 #define PLURAL_SUFFIX(n) \
 330         (((n) != 1) ? "s" : "")
 331
 332 extern const char *tok2strary_internal(const char **, int, const char *, int);
 333 #define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)
 334
 335 extern if_printer lookup_printer(int);
 336
 337 /* The DLT printer routines */
 338
 339 extern u_int ap1394_if_print IF_PRINTER_ARGS;
 340 extern u_int arcnet_if_print IF_PRINTER_ARGS;
 341 extern u_int arcnet_linux_if_print IF_PRINTER_ARGS;
 342 extern u_int atm_if_print IF_PRINTER_ARGS;
 343 extern u_int bt_if_print IF_PRINTER_ARGS;
 344 extern u_int chdlc_if_print IF_PRINTER_ARGS;
 345 extern u_int cip_if_print IF_PRINTER_ARGS;
 346 extern u_int enc_if_print IF_PRINTER_ARGS;
 347 extern u_int ether_if_print IF_PRINTER_ARGS;
 348 extern u_int fddi_if_print IF_PRINTER_ARGS;
 349 extern u_int fr_if_print IF_PRINTER_ARGS;
 350 extern u_int ieee802_11_if_print IF_PRINTER_ARGS;
 351 extern u_int ieee802_11_radio_avs_if_print IF_PRINTER_ARGS;
 352 extern u_int ieee802_11_radio_if_print IF_PRINTER_ARGS;
 353 extern u_int ieee802_15_4_if_print IF_PRINTER_ARGS;
 354 extern u_int ipfc_if_print IF_PRINTER_ARGS;
 355 extern u_int ipnet_if_print IF_PRINTER_ARGS;
 356 extern u_int juniper_atm1_print IF_PRINTER_ARGS;
 357 extern u_int juniper_atm2_print IF_PRINTER_ARGS;
 358 extern u_int juniper_chdlc_print IF_PRINTER_ARGS;
 359 extern u_int juniper_es_print IF_PRINTER_ARGS;
 360 extern u_int juniper_ether_print IF_PRINTER_ARGS;
 361 extern u_int juniper_frelay_print IF_PRINTER_ARGS;
 362 extern u_int juniper_ggsn_print IF_PRINTER_ARGS;
 363 extern u_int juniper_mfr_print IF_PRINTER_ARGS;
 364 extern u_int juniper_mlfr_print IF_PRINTER_ARGS;
 365 extern u_int juniper_mlppp_print IF_PRINTER_ARGS;
 366 extern u_int juniper_monitor_print IF_PRINTER_ARGS;
 367 extern u_int juniper_ppp_print IF_PRINTER_ARGS;
 368 extern u_int juniper_pppoe_atm_print IF_PRINTER_ARGS;
 369 extern u_int juniper_pppoe_print IF_PRINTER_ARGS;
 370 extern u_int juniper_services_print IF_PRINTER_ARGS;
 371 extern u_int lane_if_print IF_PRINTER_ARGS;
 372 extern u_int ltalk_if_print IF_PRINTER_ARGS;
 373 extern u_int mfr_if_print IF_PRINTER_ARGS;
 374 extern u_int netanalyzer_if_print IF_PRINTER_ARGS;
 375 extern u_int netanalyzer_transparent_if_print IF_PRINTER_ARGS;
 376 extern u_int nflog_if_print IF_PRINTER_ARGS;
 377 extern u_int null_if_print IF_PRINTER_ARGS;
 378 extern u_int pflog_if_print IF_PRINTER_ARGS;
 379 extern u_int pktap_if_print IF_PRINTER_ARGS;
 380 extern u_int ppi_if_print IF_PRINTER_ARGS;
 381 extern u_int ppp_bsdos_if_print IF_PRINTER_ARGS;
 382 extern u_int ppp_hdlc_if_print IF_PRINTER_ARGS;
 383 extern u_int ppp_if_print IF_PRINTER_ARGS;
 384 extern u_int pppoe_if_print IF_PRINTER_ARGS;
 385 extern u_int prism_if_print IF_PRINTER_ARGS;
 386 extern u_int raw_if_print IF_PRINTER_ARGS;
 387 extern u_int sl_bsdos_if_print IF_PRINTER_ARGS;
 388 extern u_int sl_if_print IF_PRINTER_ARGS;
 389 extern u_int sll_if_print IF_PRINTER_ARGS;
 390 extern u_int sunatm_if_print IF_PRINTER_ARGS;
 391 extern u_int symantec_if_print IF_PRINTER_ARGS;
 392 extern u_int token_if_print IF_PRINTER_ARGS;
 393 extern u_int usb_linux_48_byte_print IF_PRINTER_ARGS;
 394 extern u_int usb_linux_64_byte_print IF_PRINTER_ARGS;
 395
 396 /* The printer routines. */
 397
 398 extern void aarp_print(netdissect_options *, const u_char *, u_int);
 399 extern int ah_print(netdissect_options *, register const u_char *);
 400 extern void ahcp_print(netdissect_options *, const u_char *, const u_int);
 401 extern void aodv_print(netdissect_options *, const u_char *, u_int, int);
 402 extern void aoe_print(netdissect_options *, const u_char *, const u_int);
 403 extern void arp_print(netdissect_options *, const u_char *, u_int, u_int);
 404 extern void ascii_print(netdissect_options *, const u_char *, u_int);
 405 extern void atalk_print(netdissect_options *, const u_char *, u_int);
 406 extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int);
 407 extern void babel_print(netdissect_options *, const u_char *, u_int);
 408 extern void beep_print(netdissect_options *, const u_char *, u_int);
 409 extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int);
 410 extern void bgp_print(netdissect_options *, const u_char *, int);
 411 extern char *bgp_vpn_rd_print (netdissect_options *, const u_char *);
 412 extern void bootp_print(netdissect_options *, const u_char *, u_int);
 413 extern void calm_fast_print(netdissect_options *, const u_char *, const u_char *, u_int);
 414 extern void carp_print(netdissect_options *, const u_char *, u_int, int);
 415 extern void cdp_print(netdissect_options *, const u_char *, u_int, u_int);
 416 extern void cfm_print(netdissect_options *, const u_char *, u_int);
 417 extern u_int chdlc_print(netdissect_options *, register const u_char *, u_int);
 418 extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int);
 419 extern void cnfp_print(netdissect_options *, const u_char *);
 420 extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int);
 421 extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int);
 422 extern void dhcp6_print(netdissect_options *, const u_char *, u_int);
 423 extern int dstopt_print(netdissect_options *, const u_char *);
 424 extern void dtp_print(netdissect_options *, const u_char *, u_int);
 425 extern void dvmrp_print(netdissect_options *, const u_char *, u_int);
 426 extern void eap_print(netdissect_options *, const u_char *, u_int);
 427 extern void egp_print(netdissect_options *, const u_char *, u_int);
 428 extern void eigrp_print(netdissect_options *, const u_char *, u_int);
 429 extern int esp_print(netdissect_options *, const u_char *, const int, const u_char *, int *, int *);
 430 extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *);
 431 extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int);
 432 extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int);
 433 extern void forces_print(netdissect_options *, const u_char *, u_int);
 434 extern u_int fr_print(netdissect_options *, register const u_char *, u_int);
 435 extern int frag6_print(netdissect_options *, const u_char *, const u_char *);
 436 extern void ftp_print(netdissect_options *, const u_char *, u_int);
 437 extern void geneve_print(netdissect_options *, const u_char *, u_int);
 438 extern void geonet_print(netdissect_options *, const u_char *, const u_char *, u_int);
 439 extern void gre_print(netdissect_options *, const u_char *, u_int);
 440 extern int hbhopt_print(netdissect_options *, const u_char *);
 441 extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int);
 442 extern void hex_and_ascii_print_with_offset(netdissect_options *, const char *, const u_char *, u_int, u_int);
 443 extern void hex_print(netdissect_options *, const char *ident, const u_char *cp, u_int);
 444 extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp, u_int, u_int);
 445 extern void hsrp_print(netdissect_options *, const u_char *, u_int);
 446 extern void http_print(netdissect_options *, const u_char *, u_int);
 447 extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
 448 extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
 449 extern void igmp_print(netdissect_options *, const u_char *, u_int);
 450 extern void igrp_print(netdissect_options *, const u_char *, u_int);
 451 extern void ip6_print(netdissect_options *, const u_char *, u_int);
 452 extern void ipN_print(netdissect_options *, const u_char *, u_int);
 453 extern void ip_print(netdissect_options *, const u_char *, u_int);
 454 extern void ip_print_inner(netdissect_options *, const u_char *, u_int, u_int nh, const u_char *);
 455 extern int ipcomp_print(netdissect_options *, register const u_char *, int *);
 456 extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int);
 457 extern void ipx_print(netdissect_options *, const u_char *, u_int);
 458 extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *);
 459 extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *);
 460 extern void isoclns_print(netdissect_options *, const u_char *, u_int, u_int);
 461 extern void krb_print(netdissect_options *, const u_char *);
 462 extern void l2tp_print(netdissect_options *, const u_char *, u_int);
 463 extern void lane_print(netdissect_options *, const u_char *, u_int, u_int);
 464 extern void ldp_print(netdissect_options *, const u_char *, u_int);
 465 extern u_int llap_print(netdissect_options *, const u_char *, u_int);
 466 extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const u_char *, const u_char *);
 467 extern void lldp_print(netdissect_options *, const u_char *, u_int);
 468 extern void lmp_print(netdissect_options *, const u_char *, u_int);
 469 extern void loopback_print(netdissect_options *, const u_char *, const u_int);
 470 extern void lspping_print(netdissect_options *, const u_char *, u_int);
 471 extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int);
 472 extern void lwapp_data_print(netdissect_options *, const u_char *, u_int);
 473 extern void lwres_print(netdissect_options *, const u_char *, u_int);
 474 extern void m3ua_print(netdissect_options *, const u_char *, const u_int);
 475 extern void medsa_print(netdissect_options *, const u_char *, u_int, u_int);
 476 extern u_int mfr_print(netdissect_options *, register const u_char *, u_int);
 477 extern void mobile_print(netdissect_options *, const u_char *, u_int);
 478 extern int mobility_print(netdissect_options *, const u_char *, const u_char *);
 479 extern void mpcp_print(netdissect_options *, const u_char *, u_int);
 480 extern void mpls_print(netdissect_options *, const u_char *, u_int);
 481 extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char);
 482 extern void msdp_print(netdissect_options *, const u_char *, u_int);
 483 extern void msnlb_print(netdissect_options *, const u_char *);
 484 extern void nbt_tcp_print(netdissect_options *, const u_char *, int);
 485 extern void nbt_udp137_print(netdissect_options *, const u_char *, int);
 486 extern void nbt_udp138_print(netdissect_options *, const u_char *, int);
 487 extern void netbeui_print(netdissect_options *, u_short, const u_char *, int);
 488 extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *);
 489 extern void nfsreply_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
 490 extern void nfsreq_print_noaddr(netdissect_options *, const u_char *, u_int, const u_char *);
 491 extern const u_char * ns_nprint (netdissect_options *, register const u_char *, register const u_char *);
 492 extern void ns_print(netdissect_options *, const u_char *, u_int, int);
 493 extern void ntp_print(netdissect_options *, const u_char *, u_int);
 494 extern int oam_print(netdissect_options *, const u_char *, u_int, u_int);
 495 extern void olsr_print(netdissect_options *, const u_char *, u_int, int);
 496 extern void openflow_print(netdissect_options *, const u_char *, const u_int);
 497 extern void ospf6_print(netdissect_options *, const u_char *, u_int);
 498 extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *);
 499 extern int ospf_print_grace_lsa(netdissect_options *, const uint8_t *, u_int);
 500 extern int ospf_print_te_lsa(netdissect_options *, const uint8_t *, u_int);
 501 extern void otv_print(netdissect_options *, const u_char *, u_int);
 502 extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *);
 503 extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *);
 504 extern void pimv1_print(netdissect_options *, const u_char *, u_int);
 505 extern u_int ppp_print(netdissect_options *, register const u_char *, u_int);
 506 extern u_int pppoe_print(netdissect_options *, const u_char *, u_int);
 507 extern void pptp_print(netdissect_options *, const u_char *);
 508 extern int print_unknown_data(netdissect_options *, const u_char *, const char *, int);
 509 extern char *q922_string(netdissect_options *, const u_char *, u_int);
 510 extern void q933_print(netdissect_options *, const u_char *, u_int);
 511 extern void radius_print(netdissect_options *, const u_char *, u_int);
 512 extern void rip_print(netdissect_options *, const u_char *, u_int);
 513 extern void ripng_print(netdissect_options *, const u_char *, unsigned int);
 514 extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int);
 515 extern void rrcp_print(netdissect_options *, const u_char *, u_int);
 516 extern void rsvp_print(netdissect_options *, const u_char *, u_int);
 517 extern int rt6_print(netdissect_options *, const u_char *, const u_char *);
 518 extern void rtsp_print(netdissect_options *, const u_char *, u_int);
 519 extern void rx_print(netdissect_options *, register const u_char *, int, int, int, const u_char *);
 520 extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int);
 521 extern void sflow_print(netdissect_options *, const u_char *, u_int);
 522 extern void sip_print(netdissect_options *, const u_char *, u_int);
 523 extern void slow_print(netdissect_options *, const u_char *, u_int);
 524 extern void smb_print_data(netdissect_options *, const unsigned char *, int);
 525 extern void smb_tcp_print(netdissect_options *, const u_char *, int);
 526 extern void smtp_print(netdissect_options *, const u_char *, u_int);
 527 extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const u_char *, const u_char *, u_int);
 528 extern void snmp_print(netdissect_options *, const u_char *, u_int);
 529 extern void stp_print(netdissect_options *, const u_char *, u_int);
 530 extern void sunrpcrequest_print(netdissect_options *, const u_char *, u_int, const u_char *);
 531 extern void syslog_print(netdissect_options *, const u_char *, u_int);
 532 extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
 533 extern void telnet_print(netdissect_options *, const u_char *, u_int);
 534 extern void tftp_print(netdissect_options *, const u_char *, u_int);
 535 extern void timed_print(netdissect_options *, const u_char *);
 536 extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int);
 537 extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int);
 538 extern void udld_print(netdissect_options *, const u_char *, u_int);
 539 extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
 540 extern int vjc_print(netdissect_options *, register const char *, u_short);
 541 extern void vqp_print(netdissect_options *, register const u_char *, register u_int);
 542 extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int);
 543 extern void vtp_print(netdissect_options *, const u_char *, u_int);
 544 extern void vxlan_print(netdissect_options *, const u_char *, u_int);
 545 extern void wb_print(netdissect_options *, const void *, u_int);
 546 extern void zephyr_print(netdissect_options *, const u_char *, int);
 547 extern void zmtp1_print(netdissect_options *, const u_char *, u_int);
 548 extern void zmtp1_print_datagram(netdissect_options *, const u_char *, const u_int);
 549
 550 /* checksum routines */
 551 extern void init_checksum(void);
 552 extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int);
 553 extern uint16_t create_osi_cksum(const uint8_t *, int, int);
 554
 555 struct cksum_vec {
 556         const uint8_t   *ptr;
 557         int             len;
 558 };
 559 extern uint16_t in_cksum(const struct cksum_vec *, int);
 560 extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t);
 561
 562 extern int nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, u_int);
 563
 564 /* Utilities */
 565 extern int mask2plen(uint32_t);
 566 extern int mask62plen(const u_char *);
 567
 568 extern const char *dnname_string(netdissect_options *, u_short);
 569 extern const char *dnnum_string(netdissect_options *, u_short);
 570
 571 extern char *smb_errstr(int, int);
 572 extern const char *nt_errstr(uint32_t);
 573
 574 extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, u_int);
 575 extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, u_int);
 576
 577 extern void esp_print_decodesecret(netdissect_options *);
 578 extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *, int,
 579                                              u_char spii[8], u_char spir[8],
 580                                              const u_char *, const u_char *);
 581
 582 #endif  /* netdissect_h */