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