2 * Definitions for packet disassembly structures and routines
4 * Wireshark - Network traffic analyzer
5 * By Gerald Combs <gerald@wireshark.org>
6 * Copyright 1998 Gerald Combs
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 #include "value_string.h"
29 #include "frame_data.h"
30 #include "packet_info.h"
31 #include "column-utils.h"
33 #include "ws_symbol_export.h"
37 #endif /* __cplusplus */
41 /** @defgroup packet General Packet Dissection
46 #define hi_nibble(b) (((b) & 0xf0) >> 4)
47 #define lo_nibble(b) ((b) & 0x0f)
49 /* Useful when you have an array whose size you can tell at compile-time */
50 #define array_length(x) (sizeof x / sizeof x[0])
52 /* Check whether the "len" bytes of data starting at "offset" is
53 * entirely inside the captured data for this packet. */
54 #define BYTES_ARE_IN_FRAME(offset, captured_len, len) \
55 ((guint)(offset) + (guint)(len) > (guint)(offset) && \
56 (guint)(offset) + (guint)(len) <= (guint)(captured_len))
58 /* To pass one of two strings, singular or plural */
59 #define plurality(d,s,p) ((d) == 1 ? (s) : (p))
61 typedef struct _packet_counts {
78 /** Number of packet counts. */
79 #define PACKET_COUNTS_SIZE sizeof(packet_counts) / sizeof (gint)
81 extern void packet_init(void);
82 extern void packet_cache_proto_handles(void);
83 extern void packet_cleanup(void);
85 /* Handle for dissectors you call directly or register with "dissector_add_uint()".
86 This handle is opaque outside of "packet.c". */
87 struct dissector_handle;
88 typedef struct dissector_handle *dissector_handle_t;
90 /* Hash table for matching unsigned integers, or strings, and dissectors;
91 this is opaque outside of "packet.c". */
92 struct dissector_table;
93 typedef struct dissector_table *dissector_table_t;
96 * Dissector that returns nothing.
98 typedef void (*dissector_t)(tvbuff_t *, packet_info *, proto_tree *);
101 * Dissector that returns:
103 * The amount of data in the protocol's PDU, if it was able to
104 * dissect all the data;
106 * 0, if the tvbuff doesn't contain a PDU for that protocol;
108 * The negative of the amount of additional data needed, if
109 * we need more data (e.g., from subsequent TCP segments) to
110 * dissect the entire PDU.
112 typedef int (*new_dissector_t)(tvbuff_t *, packet_info *, proto_tree *, void *);
114 /** Type of a heuristic dissector, used in heur_dissector_add().
116 * @param tvb the tvbuff with the (remaining) packet data
117 * @param pinfo the packet info of this packet (additional info)
118 * @param tree the protocol tree to be build or NULL
119 * @return TRUE if the packet was recognized by the sub-dissector (stop dissection here)
121 typedef gboolean (*heur_dissector_t)(tvbuff_t *tvb, packet_info *pinfo,
122 proto_tree *tree, void *);
127 } heuristic_enable_e;
129 typedef void (*DATFunc) (const gchar *table_name, ftenum_t selector_type,
130 gpointer key, gpointer value, gpointer user_data);
131 typedef void (*DATFunc_handle) (const gchar *table_name, gpointer value,
133 typedef void (*DATFunc_table) (const gchar *table_name, const gchar *ui_name,
136 /* Opaque structure - provides type checking but no access to components */
137 typedef struct dtbl_entry dtbl_entry_t;
139 WS_DLL_PUBLIC dissector_handle_t dtbl_entry_get_handle (dtbl_entry_t *dtbl_entry);
140 WS_DLL_PUBLIC dissector_handle_t dtbl_entry_get_initial_handle (dtbl_entry_t * entry);
142 /** Iterate over dissectors in a table with non-default "decode as" settings.
144 * Walk one dissector table calling a user supplied function only on
145 * any entry that has been changed from its original state.
147 * @param[in] table_name The name of the dissector table, e.g. "ip.proto".
148 * @param[in] func The function to call for each dissector.
149 * @param[in] user_data User data to pass to the function.
151 void dissector_table_foreach_changed (const char *table_name, DATFunc func,
154 /** Iterate over dissectors in a table.
156 * Walk one dissector table's hash table calling a user supplied function
159 * @param[in] table_name The name of the dissector table, e.g. "ip.proto".
160 * @param[in] func The function to call for each dissector.
161 * @param[in] user_data User data to pass to the function.
163 WS_DLL_PUBLIC void dissector_table_foreach (const char *table_name, DATFunc func,
166 /** Iterate over dissectors with non-default "decode as" settings.
168 * Walk all dissector tables calling a user supplied function only on
169 * any "decode as" entry that has been changed from its original state.
171 * @param[in] func The function to call for each dissector.
172 * @param[in] user_data User data to pass to the function.
174 WS_DLL_PUBLIC void dissector_all_tables_foreach_changed (DATFunc func,
177 /** Iterate over dissectors in a table by handle.
179 * Walk one dissector table's list of handles calling a user supplied
180 * function on each entry.
182 * @param[in] table_name The name of the dissector table, e.g. "ip.proto".
183 * @param[in] func The function to call for each dissector.
184 * @param[in] user_data User data to pass to the function.
186 WS_DLL_PUBLIC void dissector_table_foreach_handle(const char *table_name, DATFunc_handle func,
189 /** Iterate over all dissector tables.
191 * Walk the set of dissector tables calling a user supplied function on each
193 * @param[in] func The function to call for each table.
194 * @param[in] user_data User data to pass to the function.
195 * @param[in] compare_key_func Function used to sort the set of tables before
196 * calling the function. No sorting is done if NULL. */
197 WS_DLL_PUBLIC void dissector_all_tables_foreach_table (DATFunc_table func,
198 gpointer user_data, GCompareFunc compare_key_func);
200 /* a protocol uses the function to register a sub-dissector table
202 * 'param' is the display base for integer tables, and TRUE/FALSE for
203 * string tables (true indicating case-insensitive, false indicating
206 WS_DLL_PUBLIC dissector_table_t register_dissector_table(const char *name,
207 const char *ui_name, const ftenum_t type, const int param);
210 * Similar to register_dissector_table, but with a "custom" hash function
211 * to store subdissectors.
213 WS_DLL_PUBLIC dissector_table_t register_custom_dissector_table(const char *name,
214 const char *ui_name, GHashFunc hash_func, GEqualFunc key_equal_func);
216 /** Deregister the dissector table by table name. */
217 WS_DLL_PUBLIC void deregister_dissector_table(const char *name);
219 /* Find a dissector table by table name. */
220 WS_DLL_PUBLIC dissector_table_t find_dissector_table(const char *name);
222 /* Get the UI name for a sub-dissector table, given its internal name */
223 WS_DLL_PUBLIC const char *get_dissector_table_ui_name(const char *name);
225 /* Get the field type for values of the selector for a dissector table,
226 given the table's internal name */
227 WS_DLL_PUBLIC ftenum_t get_dissector_table_selector_type(const char *name);
229 /* Get the param set for the sub-dissector table,
230 given the table's internal name */
231 WS_DLL_PUBLIC int get_dissector_table_param(const char *name);
233 /* Dump all dissector tables to the standard output (not the entries,
234 just the information about the tables) */
235 WS_DLL_PUBLIC void dissector_dump_dissector_tables(void);
237 /* Add an entry to a uint dissector table. */
238 WS_DLL_PUBLIC void dissector_add_uint(const char *abbrev, const guint32 pattern,
239 dissector_handle_t handle);
241 /* Add an range of entries to a uint dissector table. */
242 WS_DLL_PUBLIC void dissector_add_uint_range(const char *abbrev, struct epan_range *range,
243 dissector_handle_t handle);
245 /* Delete the entry for a dissector in a uint dissector table
246 with a particular pattern. */
247 WS_DLL_PUBLIC void dissector_delete_uint(const char *name, const guint32 pattern,
248 dissector_handle_t handle);
250 /* Delete an range of entries from a uint dissector table. */
251 WS_DLL_PUBLIC void dissector_delete_uint_range(const char *abbrev, struct epan_range *range,
252 dissector_handle_t handle);
254 /* Delete all entries from a dissector table. */
255 WS_DLL_PUBLIC void dissector_delete_all(const char *name, dissector_handle_t handle);
257 /* Change the entry for a dissector in a uint dissector table
258 with a particular pattern to use a new dissector handle. */
259 WS_DLL_PUBLIC void dissector_change_uint(const char *abbrev, const guint32 pattern,
260 dissector_handle_t handle);
262 /* Reset an entry in a uint dissector table to its initial value. */
263 WS_DLL_PUBLIC void dissector_reset_uint(const char *name, const guint32 pattern);
265 /* Look for a given value in a given uint dissector table and, if found,
266 call the dissector with the arguments supplied, and return the number
267 of bytes consumed, otherwise return 0. */
268 WS_DLL_PUBLIC int dissector_try_uint(dissector_table_t sub_dissectors,
269 const guint32 uint_val, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
271 /* Look for a given value in a given uint dissector table and, if found,
272 call the dissector with the arguments supplied, and return the number
273 of bytes consumed, otherwise return 0. */
274 WS_DLL_PUBLIC int dissector_try_uint_new(dissector_table_t sub_dissectors,
275 const guint32 uint_val, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, const gboolean add_proto_name, void *data);
277 /** Look for a given value in a given uint dissector table and, if found,
278 * return the current dissector handle for that value.
280 * @param[in] sub_dissectors Dissector table to search.
281 * @param[in] uint_val Value to match, e.g. the port number for the TCP dissector.
282 * @return The matching dissector handle on success, NULL if no match is found.
284 WS_DLL_PUBLIC dissector_handle_t dissector_get_uint_handle(
285 dissector_table_t const sub_dissectors, const guint32 uint_val);
287 /** Look for a given value in a given uint dissector table and, if found,
288 * return the default dissector handle for that value.
290 * @param[in] name Dissector table name.
291 * @param[in] uint_val Value to match, e.g. the port number for the TCP dissector.
292 * @return The matching dissector handle on success, NULL if no match is found.
294 WS_DLL_PUBLIC dissector_handle_t dissector_get_default_uint_handle(
295 const char *name, const guint32 uint_val);
297 /* Add an entry to a string dissector table. */
298 WS_DLL_PUBLIC void dissector_add_string(const char *name, const gchar *pattern,
299 dissector_handle_t handle);
301 /* Delete the entry for a dissector in a string dissector table
302 with a particular pattern. */
303 WS_DLL_PUBLIC void dissector_delete_string(const char *name, const gchar *pattern,
304 dissector_handle_t handle);
306 /* Change the entry for a dissector in a string dissector table
307 with a particular pattern to use a new dissector handle. */
308 WS_DLL_PUBLIC void dissector_change_string(const char *name, const gchar *pattern,
309 dissector_handle_t handle);
311 /* Reset an entry in a string sub-dissector table to its initial value. */
312 WS_DLL_PUBLIC void dissector_reset_string(const char *name, const gchar *pattern);
314 /* Look for a given string in a given dissector table and, if found, call
315 the dissector with the arguments supplied, and return the number of
316 bytes consumed, otherwise return 0. */
317 WS_DLL_PUBLIC int dissector_try_string(dissector_table_t sub_dissectors,
318 const gchar *string, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data);
320 /** Look for a given value in a given string dissector table and, if found,
321 * return the current dissector handle for that value.
323 * @param[in] sub_dissectors Dissector table to search.
324 * @param[in] string Value to match, e.g. the OID for the BER dissector.
325 * @return The matching dissector handle on success, NULL if no match is found.
327 WS_DLL_PUBLIC dissector_handle_t dissector_get_string_handle(
328 dissector_table_t sub_dissectors, const gchar *string);
330 /** Look for a given value in a given string dissector table and, if found,
331 * return the default dissector handle for that value.
333 * @param[in] name Dissector table name.
334 * @param[in] string Value to match, e.g. the OID for the BER dissector.
335 * @return The matching dissector handle on success, NULL if no match is found.
337 WS_DLL_PUBLIC dissector_handle_t dissector_get_default_string_handle(
338 const char *name, const gchar *string);
340 /* Add an entry to a "custom" dissector table. */
341 WS_DLL_PUBLIC void dissector_add_custom_table_handle(const char *name, void *pattern,
342 dissector_handle_t handle);
344 /** Look for a given key in a given "custom" dissector table and, if found,
345 * return the current dissector handle for that key.
347 * @param[in] sub_dissectors Dissector table to search.
348 * @param[in] key Value to match, e.g. RPC key for its subdissectors
349 * @return The matching dissector handle on success, NULL if no match is found.
351 WS_DLL_PUBLIC dissector_handle_t dissector_get_custom_table_handle(
352 dissector_table_t sub_dissectors, void *key);
355 /* Add a handle to the list of handles that *could* be used with this
356 table. That list is used by the "Decode As"/"-d" code in the UI. */
357 WS_DLL_PUBLIC void dissector_add_for_decode_as(const char *name,
358 dissector_handle_t handle);
360 /* DEPRECATED, do not use in new code, call dissector_add_for_decode_as directly! */
361 #define dissector_add_handle dissector_add_for_decode_as
363 /** Get the list of handles for a dissector table
365 WS_DLL_PUBLIC GSList *dissector_table_get_dissector_handles(dissector_table_t dissector_table);
367 /** Get a dissector table's type
369 WS_DLL_PUBLIC ftenum_t dissector_table_get_type(dissector_table_t dissector_table);
371 /* List of "heuristic" dissectors (which get handed a packet, look at it,
372 and either recognize it as being for their protocol, dissect it, and
373 return TRUE, or don't recognize it and return FALSE) to be called
374 by another dissector.
376 This is opaque outside of "packet.c". */
377 struct heur_dissector_list;
378 typedef struct heur_dissector_list *heur_dissector_list_t;
382 heur_dissector_t dissector;
383 protocol_t *protocol; /* this entry's protocol */
384 gchar *list_name; /* the list name this entry is in the list of */
385 const gchar *display_name; /* the string used to present heuristic to user */
386 const gchar *short_name; /* string used for "internal" use to uniquely identify heuristic */
390 /** A protocol uses this function to register a heuristic sub-dissector list.
391 * Call this in the parent dissectors proto_register function.
393 * @param name the name of this protocol
395 WS_DLL_PUBLIC heur_dissector_list_t register_heur_dissector_list(const char *name);
397 typedef void (*DATFunc_heur) (const gchar *table_name,
398 heur_dtbl_entry_t *entry, gpointer user_data);
399 typedef void (*DATFunc_heur_table) (const gchar *table_name,
400 heur_dissector_list_t *table, gpointer user_data);
402 /** Iterate over heuristic dissectors in a table.
404 * Walk one heuristic dissector table's list calling a user supplied function
407 * @param[in] table_name The name of the dissector table, e.g. "tcp".
408 * @param[in] func The function to call for each dissector.
409 * @param[in] user_data User data to pass to the function.
411 WS_DLL_PUBLIC void heur_dissector_table_foreach(const char *table_name,
412 DATFunc_heur func, gpointer user_data);
414 /** Iterate over all heuristic dissector tables.
416 * Walk the set of heuristic dissector tables calling a user supplied function
418 * @param[in] func The function to call for each table.
419 * @param[in] user_data User data to pass to the function.
420 * @param[in] compare_key_func Function used to sort the set of tables before
421 * calling the function. No sorting is done if NULL. */
422 WS_DLL_PUBLIC void dissector_all_heur_tables_foreach_table (DATFunc_heur_table func,
423 gpointer user_data, GCompareFunc compare_key_func);
425 /* true if a heur_dissector list of that anme exists to be registered into */
426 WS_DLL_PUBLIC gboolean has_heur_dissector_list(const gchar *name);
428 /** Try all the dissectors in a given heuristic dissector list. This is done,
429 * until we find one that recognizes the protocol.
430 * Call this while the parent dissector running.
432 * @param sub_dissectors the sub-dissector list
433 * @param tvb the tvbuff with the (remaining) packet data
434 * @param pinfo the packet info of this packet (additional info)
435 * @param tree the protocol tree to be build or NULL
436 * @param hdtbl_entry returns the last tried dissectors hdtbl_entry.
437 * @param data parameter to pass to subdissector
438 * @return TRUE if the packet was recognized by the sub-dissector (stop dissection here)
440 WS_DLL_PUBLIC gboolean dissector_try_heuristic(heur_dissector_list_t sub_dissectors,
441 tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, heur_dtbl_entry_t **hdtbl_entry, void *data);
443 /** Find a heuristic dissector table by table name.
445 * @param name name of the dissector table
446 * @return pointer to the table on success, NULL if no such table exists
448 WS_DLL_PUBLIC heur_dissector_list_t find_heur_dissector_list(const char *name);
450 /** Find a heuristic dissector by the unique short protocol name provided during registration.
452 * @param short_name short name of the protocol to look at
453 * @return pointer to the heuristic dissector entry, NULL if not such dissector exists
455 WS_DLL_PUBLIC heur_dtbl_entry_t* find_heur_dissector_by_unique_short_name(const char *short_name);
457 /** Add a sub-dissector to a heuristic dissector list.
458 * Call this in the proto_handoff function of the sub-dissector.
460 * @param name the name of the "parent" protocol, e.g. "tcp"
461 * @param dissector the sub-dissector to be registered
462 * @param display_name the string used to present heuristic to user, e.g. "HTTP over TCP"
463 * @param short_name the string used for "internal" use to identify heuristic, e.g. "http_tcp"
464 * @param proto the protocol id of the sub-dissector
465 * @param enable initially enabled or not
467 WS_DLL_PUBLIC void heur_dissector_add(const char *name, heur_dissector_t dissector,
468 const char *display_name, const char *short_name, const int proto, heuristic_enable_e enable);
470 /** Remove a sub-dissector from a heuristic dissector list.
471 * Call this in the prefs_reinit function of the sub-dissector.
473 * @param name the name of the "parent" protocol, e.g. "tcp"
474 * @param dissector the sub-dissector to be unregistered
475 * @param proto the protocol id of the sub-dissector
477 WS_DLL_PUBLIC void heur_dissector_delete(const char *name, heur_dissector_t dissector, const int proto);
479 /** Enable/Disable a sub-dissector in a heuristic dissector list
480 * Call this in the prefs_reinit function of the sub-dissector.
482 * @param name the name of the "parent" protocol, e.g. "tcp"
483 * @param dissector the sub-dissector to be disabled/enabled
484 * @param proto the protocol id of the sub-dissector
485 * @param enabled TRUE/FALSE to enable/disable the sub-dissector
487 extern void heur_dissector_set_enabled(const char *name, heur_dissector_t dissector, const int proto, const gboolean enabled);
489 /** Register a dissector. */
490 WS_DLL_PUBLIC dissector_handle_t register_dissector(const char *name, dissector_t dissector, const int proto);
492 /** Register a new dissector. */
493 WS_DLL_PUBLIC dissector_handle_t new_register_dissector(const char *name, new_dissector_t dissector, const int proto);
495 /** Deregister a dissector. */
496 WS_DLL_PUBLIC void deregister_dissector(const char *name);
498 /** Get the long name of the protocol for a dissector handle. */
499 extern const char *dissector_handle_get_long_name(const dissector_handle_t handle);
501 /** Get the short name of the protocol for a dissector handle. */
502 WS_DLL_PUBLIC const char *dissector_handle_get_short_name(const dissector_handle_t handle);
504 /** Get the index of the protocol for a dissector handle. */
505 WS_DLL_PUBLIC int dissector_handle_get_protocol_index(const dissector_handle_t handle);
507 /** Get a GList of all registered dissector names. */
508 WS_DLL_PUBLIC GList* get_dissector_names(void);
510 /** Find a dissector by name. */
511 WS_DLL_PUBLIC dissector_handle_t find_dissector(const char *name);
513 /** Get a dissector name from handle. */
514 WS_DLL_PUBLIC const char *dissector_handle_get_dissector_name(const dissector_handle_t handle);
516 /** Create an anonymous handle for a dissector. */
517 WS_DLL_PUBLIC dissector_handle_t create_dissector_handle(dissector_t dissector,
519 WS_DLL_PUBLIC dissector_handle_t new_create_dissector_handle(new_dissector_t dissector,
521 WS_DLL_PUBLIC dissector_handle_t new_create_dissector_handle_with_name(new_dissector_t dissector,
522 const int proto, const char* name);
524 /** Destroy an anonymous handle for a dissector. */
525 WS_DLL_PUBLIC void destroy_dissector_handle(dissector_handle_t handle);
527 /** Call a dissector through a handle and if no dissector was found
528 * pass it over to the "data" dissector instead.
530 * @param handle The dissector to call.
531 * @param tvb The buffer to dissect.
532 * @param pinfo Packet Info.
533 * @param tree The protocol tree.
534 * @param data parameter to pass to dissector
535 * @return If the protocol for that handle isn't enabled call the data
536 * dissector. Otherwise, if the handle refers to a new-style
537 * dissector, call the dissector and return its return value, otherwise call
538 * it and return the length of the tvbuff pointed to by the argument.
540 WS_DLL_PUBLIC int call_dissector_with_data(dissector_handle_t handle, tvbuff_t *tvb,
541 packet_info *pinfo, proto_tree *tree, void *data);
542 WS_DLL_PUBLIC int call_dissector(dissector_handle_t handle, tvbuff_t *tvb,
543 packet_info *pinfo, proto_tree *tree);
545 /** Call a dissector through a handle but if no dissector was found
546 * just return 0 and do not call the "data" dissector instead.
548 * @param handle The dissector to call.
549 * @param tvb The buffer to dissect.
550 * @param pinfo Packet Info.
551 * @param tree The protocol tree.
552 * @param data parameter to pass to dissector
553 * @return If the protocol for that handle isn't enabled, return 0 without
554 * calling the dissector. Otherwise, if the handle refers to a new-style
555 * dissector, call the dissector and return its return value, otherwise call
556 * it and return the length of the tvbuff pointed to by the argument.
558 WS_DLL_PUBLIC int call_dissector_only(dissector_handle_t handle, tvbuff_t *tvb,
559 packet_info *pinfo, proto_tree *tree, void *data);
562 * @param heur_dtbl_entry The heur_dtbl_entry of the dissector to call.
563 * @param tvb The buffer to dissect.
564 * @param pinfo Packet Info.
565 * @param tree The protocol tree.
566 * @param data parameter to pass to dissector
569 WS_DLL_PUBLIC void call_heur_dissector_direct(heur_dtbl_entry_t *heur_dtbl_entry, tvbuff_t *tvb,
570 packet_info *pinfo, proto_tree *tree, void *data);
572 /* Do all one-time initialization. */
573 extern void dissect_init(void);
575 extern void dissect_cleanup(void);
578 * Given a tvbuff, and a length from a packet header, adjust the length
579 * of the tvbuff to reflect the specified length.
581 WS_DLL_PUBLIC void set_actual_length(tvbuff_t *tvb, const guint specified_len);
584 * Allow protocols to register "init" routines, which are called before
585 * we make a pass through a capture file and dissect all its packets
586 * (e.g., when we read in a new capture file, or run a "filter packets"
587 * or "colorize packets" pass over the current capture file or when the
588 * preferences are changed).
590 WS_DLL_PUBLIC void register_init_routine(void (*func)(void));
593 * Allows protocols to register "cleanup" routines which are called
594 * after closing a capture file (or when preferences are changed, in
595 * that case these routines are called before the init routines are
596 * executed). It can be used to release resources that are allocated in
597 * register_init_routine.
599 WS_DLL_PUBLIC void register_cleanup_routine(void (*func)(void));
601 /* Initialize all data structures used for dissection. */
602 void init_dissection(void);
604 /* Free data structures allocated for dissection. */
605 void cleanup_dissection(void);
607 /* Allow protocols to register a "cleanup" routine to be
608 * run after the initial sequential run through the packets.
609 * Note that the file can still be open after this; this is not
610 * the final cleanup. */
611 WS_DLL_PUBLIC void register_postseq_cleanup_routine(void (*func)(void));
613 /* Call all the registered "postseq_cleanup" routines. */
614 WS_DLL_PUBLIC void postseq_cleanup_all_protocols(void);
616 /* Allow dissectors to register a "final_registration" routine
617 * that is run like the proto_register_XXX() routine, but the end
618 * end of the epan_init() function; that is, *after* all other
619 * subsystems, liked dfilters, have finished initializing. This is
620 * useful for dissector registration routines which need to compile
621 * display filters. dfilters can't initialize itself until all protocols
622 * have registereed themselvs. */
624 register_final_registration_routine(void (*func)(void));
626 /* Call all the registered "final_registration" routines. */
628 final_registration_all_protocols(void);
631 * Add a new data source to the list of data sources for a frame, given
632 * the tvbuff for the data source and its name.
634 WS_DLL_PUBLIC void add_new_data_source(packet_info *pinfo, tvbuff_t *tvb,
636 /* Removes the last-added data source, if it turns out it wasn't needed */
637 WS_DLL_PUBLIC void remove_last_data_source(packet_info *pinfo);
641 * Return the data source name, tvb.
644 WS_DLL_PUBLIC char *get_data_source_name(const struct data_source *src);
645 WS_DLL_PUBLIC tvbuff_t *get_data_source_tvb(const struct data_source *src);
648 * Free up a frame's list of data sources.
650 extern void free_data_sources(packet_info *pinfo);
652 /* Mark another frame as depended upon by the current frame.
654 * This information is used to ensure that the dependend-upon frame is saved
655 * if the user does a File->Save-As of only the Displayed packets and the
656 * current frame passed the display filter.
658 WS_DLL_PUBLIC void mark_frame_as_depended_upon(packet_info *pinfo, guint32 frame_num);
660 /* Structure passed to the frame dissector */
661 typedef struct frame_data_s
663 int file_type_subtype;
664 const gchar *pkt_comment; /**< NULL if not available */
668 * Dissectors should never modify the record data.
670 extern void dissect_record(struct epan_dissect *edt, int file_type_subtype,
671 struct wtap_pkthdr *phdr, tvbuff_t *tvb,
672 frame_data *fd, column_info *cinfo);
675 * Dissectors should never modify the packet data.
677 extern void dissect_file(struct epan_dissect *edt,
678 struct wtap_pkthdr *phdr, tvbuff_t *tvb,
679 frame_data *fd, column_info *cinfo);
681 /* These functions are in packet-ethertype.c */
682 extern void capture_ethertype(guint16 etype, const guchar *pd, int offset,
683 int len, packet_counts *ld);
684 /* Structure passed to the ethertype dissector */
685 typedef struct ethertype_data_s
688 int offset_after_ethertype;
696 * Dump layer/selector/dissector records in a fashion similar to the
697 * proto_registrar_dump_* routines.
699 WS_DLL_PUBLIC void dissector_dump_decodes(void);
702 * For each heuristic dissector table, dump list of dissectors (filter_names) for that table
704 WS_DLL_PUBLIC void dissector_dump_heur_decodes(void);
707 * post dissectors are to be called by packet-frame.c after every other
708 * dissector has been called.
710 WS_DLL_PUBLIC void register_postdissector(dissector_handle_t);
711 WS_DLL_PUBLIC void deregister_postdissector(dissector_handle_t handle);
713 extern gboolean have_postdissector(void);
714 extern void call_all_postdissectors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
720 #endif /* __cplusplus */
722 #endif /* packet.h */