1998-09-16 02:39:15 +00:00
|
|
|
/* packet.h
|
|
|
|
* Definitions for packet disassembly structures and routines
|
|
|
|
*
|
2004-07-18 00:24:25 +00:00
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|
|
* $Id$
|
1998-09-16 03:22:19 +00:00
|
|
|
*
|
2006-05-21 05:12:17 +00:00
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
1998-09-16 02:39:15 +00:00
|
|
|
* Copyright 1998 Gerald Combs
|
2002-08-28 20:41:00 +00:00
|
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|
*
|
1998-09-16 02:39:15 +00:00
|
|
|
* This program is free software; you can redistribute it and/or
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|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version 2
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|
|
* of the License, or (at your option) any later version.
|
2002-08-28 20:41:00 +00:00
|
|
|
*
|
1998-09-16 02:39:15 +00:00
|
|
|
* This program is distributed in the hope that it will be useful,
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|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
2002-08-28 20:41:00 +00:00
|
|
|
*
|
1998-09-16 02:39:15 +00:00
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
2007-01-10 07:47:00 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
1998-09-16 02:39:15 +00:00
|
|
|
*/
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|
|
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|
|
#ifndef __PACKET_H__
|
|
|
|
#define __PACKET_H__
|
|
|
|
|
1999-08-20 06:55:20 +00:00
|
|
|
#include "wiretap/wtap.h"
|
1999-07-12 21:39:28 +00:00
|
|
|
#include "proto.h"
|
2000-05-11 08:18:09 +00:00
|
|
|
#include "tvbuff.h"
|
2000-08-30 02:50:18 +00:00
|
|
|
#include "pint.h"
|
2001-04-01 02:47:56 +00:00
|
|
|
#include "to_str.h"
|
2001-04-01 03:18:41 +00:00
|
|
|
#include "value_string.h"
|
2001-04-01 03:42:00 +00:00
|
|
|
#include "column_info.h"
|
2001-04-01 04:11:51 +00:00
|
|
|
#include "frame_data.h"
|
2001-04-01 04:50:42 +00:00
|
|
|
#include "packet_info.h"
|
2001-04-01 07:32:35 +00:00
|
|
|
#include "column-utils.h"
|
2001-11-21 23:16:26 +00:00
|
|
|
#include "epan.h"
|
2007-01-10 07:47:00 +00:00
|
|
|
#include "tfs.h"
|
1998-09-16 02:39:15 +00:00
|
|
|
|
2007-01-18 18:43:30 +00:00
|
|
|
#ifdef __cplusplus
|
|
|
|
extern "C" {
|
|
|
|
#endif /* __cplusplus */
|
|
|
|
|
2000-08-22 08:19:40 +00:00
|
|
|
#define hi_nibble(b) (((b) & 0xf0) >> 4)
|
|
|
|
#define lo_nibble(b) ((b) & 0x0f)
|
1999-02-08 20:02:35 +00:00
|
|
|
|
1999-07-12 21:39:28 +00:00
|
|
|
/* Useful when you have an array whose size you can tell at compile-time */
|
|
|
|
#define array_length(x) (sizeof x / sizeof x[0])
|
|
|
|
|
1999-09-17 05:56:58 +00:00
|
|
|
/* Check whether the "len" bytes of data starting at "offset" is
|
2001-11-20 21:59:18 +00:00
|
|
|
* entirely inside the captured data for this packet. */
|
|
|
|
#define BYTES_ARE_IN_FRAME(offset, captured_len, len) \
|
2002-11-06 21:49:34 +00:00
|
|
|
((guint)(offset) + (guint)(len) > (guint)(offset) && \
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|
|
|
(guint)(offset) + (guint)(len) <= (guint)(captured_len))
|
1999-09-17 05:56:58 +00:00
|
|
|
|
1999-07-12 21:39:28 +00:00
|
|
|
/* To pass one of two strings, singular or plural */
|
|
|
|
#define plurality(d,s,p) ((d) == 1 ? (s) : (p))
|
1998-09-16 02:39:15 +00:00
|
|
|
|
1999-02-09 00:35:38 +00:00
|
|
|
typedef struct _packet_counts {
|
2000-05-26 22:08:16 +00:00
|
|
|
gint sctp;
|
1999-02-09 00:35:38 +00:00
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|
|
gint tcp;
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|
|
gint udp;
|
1999-08-14 23:47:20 +00:00
|
|
|
gint icmp;
|
1999-02-09 00:35:38 +00:00
|
|
|
gint ospf;
|
1999-07-12 21:39:28 +00:00
|
|
|
gint gre;
|
1999-08-10 20:06:39 +00:00
|
|
|
gint netbios;
|
1999-11-30 23:56:37 +00:00
|
|
|
gint ipx;
|
2000-01-20 21:34:16 +00:00
|
|
|
gint vines;
|
1999-02-09 00:35:38 +00:00
|
|
|
gint other;
|
|
|
|
gint total;
|
2002-10-14 17:33:50 +00:00
|
|
|
gint arp;
|
2008-08-12 04:44:35 +00:00
|
|
|
gint i2c_event;
|
|
|
|
gint i2c_data;
|
1999-02-09 00:35:38 +00:00
|
|
|
} packet_counts;
|
|
|
|
|
2004-10-30 17:50:51 +00:00
|
|
|
/** Number of packet counts. */
|
|
|
|
#define PACKET_COUNTS_SIZE sizeof(packet_counts) / sizeof (gint)
|
|
|
|
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void packet_init(void);
|
|
|
|
extern void packet_cleanup(void);
|
2000-10-06 10:11:40 +00:00
|
|
|
|
2010-12-20 05:35:29 +00:00
|
|
|
/* Handle for dissectors you call directly or register with "dissector_add_uint()".
|
2001-12-03 04:00:26 +00:00
|
|
|
This handle is opaque outside of "packet.c". */
|
|
|
|
struct dissector_handle;
|
|
|
|
typedef struct dissector_handle *dissector_handle_t;
|
|
|
|
|
2010-12-20 05:35:29 +00:00
|
|
|
/* Hash table for matching unsigned integers, or strings, and dissectors;
|
|
|
|
this is opaque outside of "packet.c". */
|
Get rid of the lists of conversation dissectors; instead, have a
dissector table contain both a hash table, to use to look up port
numbers to find a dissector, and a list of all dissectors that *could*
be assigned to ports in that hash table, to be used by user interface
code.
Make the "Decode As" dialog box code use that.
Also make it *not* let you choose whether to set the dissector for both
the UDP and TCP versions of a port; some protocols run only atop TCP,
some run only atop UDP, and even those that can run atop both may have
different dissector handles to use over TCP and UDP, so handling a
single merged list would be a mess. (If the user is setting the
dissector for a TCP port, only those protocols that Ethereal can handle
over TCP should be listed; if the user is setting the dissector for a
UDP port, only those protocols that Ethereal can handle over TCP should
be listed; if the user is setting a dissector for both, only those
protocols that Ethereal can handle over *both* TCP *and* UDP should be
listed, *and* there needs to be a way to let the "Decode As" code get
both the TCP handle *and* the UDP handle and use the right ones. If
somebody really wants that, they need to implement all of the above if
they want the code to be correct.)
Fix the code that handles setting the dissection for the IP protocol
number to correctly update the lists of protocols being dissected as TCP
and as UDP; the code before this change wasn't updating the single such
list to add new protocols.
svn path=/trunk/; revision=4311
2001-12-03 08:47:31 +00:00
|
|
|
struct dissector_table;
|
|
|
|
typedef struct dissector_table *dissector_table_t;
|
1999-10-12 06:21:15 +00:00
|
|
|
|
2002-02-26 11:55:39 +00:00
|
|
|
/*
|
|
|
|
* Dissector that returns nothing.
|
|
|
|
*/
|
Allow either old-style (pre-tvbuff) or new-style (tvbuffified)
dissectors to be registered as dissectors for particular ports,
registered as heuristic dissectors, and registered as dissectors for
conversations, and have routines to be used both by old-style and
new-style dissectors to call registered dissectors.
Have the code that calls those dissectors translate the arguments as
necessary. (For conversation dissectors, replace
"find_conversation_dissector()", which just returns a pointer to the
dissector, with "old_try_conversation_dissector()" and
"try_conversation_dissector()", which actually call the dissector, so
that there's a single place at which we can do that translation. Also
make "dissector_lookup()" static and, instead of calling it and, if it
returns a non-null pointer, calling that dissector, just use
"old_dissector_try_port()" or "dissector_try_port()", for the same
reason.)
This allows some dissectors that took old-style arguments and
immediately translated them to new-style arguments to just take
new-style arguments; make them do so. It also allows some new-style
dissectors not to have to translate arguments before calling routines to
look up and call dissectors; make them not do so.
Get rid of checks for too-short frames in new-style dissectors - the
tvbuff code does those checks for you.
Give the routines to register old-style dissectors, and to call
dissectors from old-style dissectors, names beginning with "old_", with
the routines for new-style dissectors not having the "old_". Update the
dissectors that use those routines appropriately.
Rename "dissect_data()" to "old_dissect_data()", and
"dissect_data_tvb()" to "dissect_data()".
svn path=/trunk/; revision=2218
2000-08-07 03:21:25 +00:00
|
|
|
typedef void (*dissector_t)(tvbuff_t *, packet_info *, proto_tree *);
|
2000-04-03 09:24:12 +00:00
|
|
|
|
2002-02-26 11:55:39 +00:00
|
|
|
/*
|
|
|
|
* Dissector that returns:
|
|
|
|
*
|
2005-06-03 06:35:44 +00:00
|
|
|
* The amount of data in the protocol's PDU, if it was able to
|
2002-02-26 11:55:39 +00:00
|
|
|
* dissect all the data;
|
|
|
|
*
|
|
|
|
* 0, if the tvbuff doesn't contain a PDU for that protocol;
|
|
|
|
*
|
2005-06-03 06:35:44 +00:00
|
|
|
* The negative of the amount of additional data needed, if
|
2002-02-26 11:55:39 +00:00
|
|
|
* we need more data (e.g., from subsequent TCP segments) to
|
|
|
|
* dissect the entire PDU.
|
|
|
|
*/
|
2012-09-10 21:40:21 +00:00
|
|
|
typedef int (*new_dissector_t)(tvbuff_t *, packet_info *, proto_tree *, void *);
|
2002-02-26 11:55:39 +00:00
|
|
|
|
2005-06-03 06:35:44 +00:00
|
|
|
/** Type of a heuristic dissector, used in heur_dissector_add().
|
|
|
|
*
|
|
|
|
* @param tvb the tv_buff with the (remaining) packet data
|
|
|
|
* @param pinfo the packet info of this packet (additional info)
|
|
|
|
* @param tree the protocol tree to be build or NULL
|
|
|
|
* @return TRUE if the packet was recognized by the sub-dissector (stop dissection here)
|
|
|
|
*/
|
|
|
|
typedef gboolean (*heur_dissector_t)(tvbuff_t *tvb, packet_info *pinfo,
|
2012-09-10 21:40:21 +00:00
|
|
|
proto_tree *tree, void *);
|
2005-06-03 06:35:44 +00:00
|
|
|
|
2007-04-23 10:59:26 +00:00
|
|
|
typedef void (*DATFunc) (const gchar *table_name, ftenum_t selector_type,
|
2003-09-07 00:47:57 +00:00
|
|
|
gpointer key, gpointer value, gpointer user_data);
|
2005-08-06 10:31:27 +00:00
|
|
|
typedef void (*DATFunc_handle) (const gchar *table_name, gpointer value,
|
2003-06-05 04:47:58 +00:00
|
|
|
gpointer user_data);
|
2007-04-23 10:59:26 +00:00
|
|
|
typedef void (*DATFunc_table) (const gchar *table_name, const gchar *ui_name,
|
2003-06-05 04:47:58 +00:00
|
|
|
gpointer user_data);
|
2001-02-01 07:34:33 +00:00
|
|
|
|
2011-09-05 13:04:23 +00:00
|
|
|
typedef void (*DATFunc_heur_table) (const gchar *table_name,gpointer table,
|
|
|
|
gpointer user_data);
|
|
|
|
|
2001-02-01 07:34:33 +00:00
|
|
|
/* Opaque structure - provides type checking but no access to components */
|
|
|
|
typedef struct dtbl_entry dtbl_entry_t;
|
|
|
|
|
2001-12-03 04:00:26 +00:00
|
|
|
extern dissector_handle_t dtbl_entry_get_handle (dtbl_entry_t *dtbl_entry);
|
|
|
|
extern dissector_handle_t dtbl_entry_get_initial_handle (dtbl_entry_t * entry);
|
2007-04-23 10:59:26 +00:00
|
|
|
extern void dissector_table_foreach_changed (const char *name, DATFunc func,
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
gpointer user_data);
|
2007-04-23 10:59:26 +00:00
|
|
|
extern void dissector_table_foreach (const char *name, DATFunc func,
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
gpointer user_data);
|
|
|
|
extern void dissector_all_tables_foreach_changed (DATFunc func,
|
|
|
|
gpointer user_data);
|
2005-08-05 20:59:08 +00:00
|
|
|
extern void dissector_table_foreach_handle(const char *name, DATFunc_handle func,
|
Get rid of the lists of conversation dissectors; instead, have a
dissector table contain both a hash table, to use to look up port
numbers to find a dissector, and a list of all dissectors that *could*
be assigned to ports in that hash table, to be used by user interface
code.
Make the "Decode As" dialog box code use that.
Also make it *not* let you choose whether to set the dissector for both
the UDP and TCP versions of a port; some protocols run only atop TCP,
some run only atop UDP, and even those that can run atop both may have
different dissector handles to use over TCP and UDP, so handling a
single merged list would be a mess. (If the user is setting the
dissector for a TCP port, only those protocols that Ethereal can handle
over TCP should be listed; if the user is setting the dissector for a
UDP port, only those protocols that Ethereal can handle over TCP should
be listed; if the user is setting a dissector for both, only those
protocols that Ethereal can handle over *both* TCP *and* UDP should be
listed, *and* there needs to be a way to let the "Decode As" code get
both the TCP handle *and* the UDP handle and use the right ones. If
somebody really wants that, they need to implement all of the above if
they want the code to be correct.)
Fix the code that handles setting the dissection for the IP protocol
number to correctly update the lists of protocols being dissected as TCP
and as UDP; the code before this change wasn't updating the single such
list to add new protocols.
svn path=/trunk/; revision=4311
2001-12-03 08:47:31 +00:00
|
|
|
gpointer user_data);
|
2003-06-05 04:47:58 +00:00
|
|
|
extern void dissector_all_tables_foreach_table (DATFunc_table func,
|
2012-08-29 21:23:07 +00:00
|
|
|
gpointer user_data, GCompareFunc compare_key_func);
|
2001-02-01 07:34:33 +00:00
|
|
|
|
Add routines to:
register lists of "heuristic" dissectors, which are handed a
frame that may or may contain a payload for the protocol they
dissect, and that return FALSE if it's not or dissect the packet
and return TRUE if it is;
add a dissector to such a list;
go through such a list, calling each dissector until either a
dissector returns TRUE, in which case the routine returns TRUE,
or it runs out of entries in the list, in which case the routine
returns FALSE.
Have lists of heuristic dissectors for TCP and for COTP when used with
the Inactive Subset of CLNP, and add the GIOP and Yahoo Messenger
dissectors to the first list and the Sinec H1 dissector to the second
list.
Make the dissector name argument to "dissector_add()" and
"dissector_delete()" a "const char *" rarther than just a "char *".
Add "heur_dissector_add()", the routine to add a heuristic dissector to
a list of heuristic dissectors, to the set of routines we can export to
plugins through a table on platforms where dynamically-loaded code can't
call stuff in the main program, and initialize the element in the table
in question for "dissector_add()" (which we'd forgotten to do).
svn path=/trunk/; revision=1909
2000-05-05 09:32:36 +00:00
|
|
|
/* a protocol uses the function to register a sub-dissector table */
|
2001-12-08 06:41:48 +00:00
|
|
|
extern dissector_table_t register_dissector_table(const char *name,
|
2010-04-03 18:18:50 +00:00
|
|
|
const char *ui_name, const ftenum_t type, const int base);
|
2001-12-08 06:41:48 +00:00
|
|
|
|
2002-11-15 03:10:36 +00:00
|
|
|
/* Find a dissector table by table name. */
|
2003-07-31 18:34:52 +00:00
|
|
|
extern dissector_table_t find_dissector_table(const char *name);
|
2002-11-15 03:10:36 +00:00
|
|
|
|
2001-12-08 06:41:48 +00:00
|
|
|
/* Get the UI name for a sub-dissector table, given its internal name */
|
2005-07-24 19:01:28 +00:00
|
|
|
extern const char *get_dissector_table_ui_name(const char *name);
|
2001-12-08 06:41:48 +00:00
|
|
|
|
2003-09-07 00:47:57 +00:00
|
|
|
/* Get the field type for values of the selector for a dissector table,
|
|
|
|
given the table's internal name */
|
|
|
|
extern ftenum_t get_dissector_table_selector_type(const char *name);
|
2001-12-08 06:41:48 +00:00
|
|
|
|
|
|
|
/* Get the base to use when displaying values of the selector for a
|
|
|
|
sub-dissector table, given the table's internal name */
|
|
|
|
extern int get_dissector_table_base(const char *name);
|
2000-04-03 09:24:12 +00:00
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Add an entry to a uint dissector table. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern void dissector_add_uint(const char *abbrev, const guint32 pattern,
|
2001-12-03 04:00:26 +00:00
|
|
|
dissector_handle_t handle);
|
2000-04-03 09:24:12 +00:00
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Delete the entry for a dissector in a uint dissector table
|
|
|
|
with a particular pattern. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern void dissector_delete_uint(const char *name, const guint32 pattern,
|
2001-12-03 04:00:26 +00:00
|
|
|
dissector_handle_t handle);
|
2000-04-03 09:24:12 +00:00
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Change the entry for a dissector in a uint dissector table
|
|
|
|
with a particular pattern to use a new dissector handle. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern void dissector_change_uint(const char *abbrev, const guint32 pattern,
|
2001-12-03 04:00:26 +00:00
|
|
|
dissector_handle_t handle);
|
2001-10-31 05:59:20 +00:00
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Reset an entry in a uint dissector table to its initial value. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern void dissector_reset_uint(const char *name, const guint32 pattern);
|
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Look for a given value in a given uint dissector table and, if found,
|
|
|
|
call the dissector with the arguments supplied, and return TRUE,
|
|
|
|
otherwise return FALSE. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern gboolean dissector_try_uint(dissector_table_t sub_dissectors,
|
|
|
|
const guint32 uint_val, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
|
2009-04-21 16:53:00 +00:00
|
|
|
/* Look for a given value in a given uint dissector table and, if found,
|
|
|
|
call the dissector with the arguments supplied, and return TRUE,
|
|
|
|
otherwise return FALSE. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern gboolean dissector_try_uint_new(dissector_table_t sub_dissectors,
|
2012-09-11 09:06:48 +00:00
|
|
|
const guint32 uint_val, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, const gboolean add_proto_name, void *data);
|
2010-12-20 05:35:29 +00:00
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Look for a given value in a given uint dissector table and, if found,
|
|
|
|
return the dissector handle for that value. */
|
2010-12-20 05:35:29 +00:00
|
|
|
extern dissector_handle_t dissector_get_uint_handle(
|
|
|
|
dissector_table_t const sub_dissectors, const guint32 uint_val);
|
|
|
|
|
2003-09-06 23:37:02 +00:00
|
|
|
/* Add an entry to a string dissector table. */
|
2005-07-23 11:41:25 +00:00
|
|
|
extern void dissector_add_string(const char *name, const gchar *pattern,
|
2003-09-06 23:37:02 +00:00
|
|
|
dissector_handle_t handle);
|
|
|
|
|
|
|
|
/* Delete the entry for a dissector in a string dissector table
|
|
|
|
with a particular pattern. */
|
|
|
|
extern void dissector_delete_string(const char *name, const gchar *pattern,
|
|
|
|
dissector_handle_t handle);
|
|
|
|
|
|
|
|
/* Change the entry for a dissector in a string dissector table
|
|
|
|
with a particular pattern to use a new dissector handle. */
|
2010-02-23 04:35:23 +00:00
|
|
|
extern void dissector_change_string(const char *name, const gchar *pattern,
|
2003-09-06 23:37:02 +00:00
|
|
|
dissector_handle_t handle);
|
|
|
|
|
|
|
|
/* Reset an entry in a string sub-dissector table to its initial value. */
|
|
|
|
extern void dissector_reset_string(const char *name, const gchar *pattern);
|
|
|
|
|
|
|
|
/* Look for a given string in a given dissector table and, if found, call
|
|
|
|
the dissector with the arguments supplied, and return TRUE, otherwise
|
|
|
|
return FALSE. */
|
|
|
|
extern gboolean dissector_try_string(dissector_table_t sub_dissectors,
|
|
|
|
const gchar *string, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
|
2003-09-09 18:09:42 +00:00
|
|
|
/* Look for a given value in a given string dissector table and, if found,
|
|
|
|
return the dissector handle for that value. */
|
|
|
|
extern dissector_handle_t dissector_get_string_handle(
|
|
|
|
dissector_table_t sub_dissectors, const gchar *string);
|
|
|
|
|
Get rid of the lists of conversation dissectors; instead, have a
dissector table contain both a hash table, to use to look up port
numbers to find a dissector, and a list of all dissectors that *could*
be assigned to ports in that hash table, to be used by user interface
code.
Make the "Decode As" dialog box code use that.
Also make it *not* let you choose whether to set the dissector for both
the UDP and TCP versions of a port; some protocols run only atop TCP,
some run only atop UDP, and even those that can run atop both may have
different dissector handles to use over TCP and UDP, so handling a
single merged list would be a mess. (If the user is setting the
dissector for a TCP port, only those protocols that Ethereal can handle
over TCP should be listed; if the user is setting the dissector for a
UDP port, only those protocols that Ethereal can handle over TCP should
be listed; if the user is setting a dissector for both, only those
protocols that Ethereal can handle over *both* TCP *and* UDP should be
listed, *and* there needs to be a way to let the "Decode As" code get
both the TCP handle *and* the UDP handle and use the right ones. If
somebody really wants that, they need to implement all of the above if
they want the code to be correct.)
Fix the code that handles setting the dissection for the IP protocol
number to correctly update the lists of protocols being dissected as TCP
and as UDP; the code before this change wasn't updating the single such
list to add new protocols.
svn path=/trunk/; revision=4311
2001-12-03 08:47:31 +00:00
|
|
|
/* Add a handle to the list of handles that *could* be used with this
|
|
|
|
table. That list is used by code in the UI. */
|
|
|
|
extern void dissector_add_handle(const char *name, dissector_handle_t handle);
|
|
|
|
|
Add routines to:
register lists of "heuristic" dissectors, which are handed a
frame that may or may contain a payload for the protocol they
dissect, and that return FALSE if it's not or dissect the packet
and return TRUE if it is;
add a dissector to such a list;
go through such a list, calling each dissector until either a
dissector returns TRUE, in which case the routine returns TRUE,
or it runs out of entries in the list, in which case the routine
returns FALSE.
Have lists of heuristic dissectors for TCP and for COTP when used with
the Inactive Subset of CLNP, and add the GIOP and Yahoo Messenger
dissectors to the first list and the Sinec H1 dissector to the second
list.
Make the dissector name argument to "dissector_add()" and
"dissector_delete()" a "const char *" rarther than just a "char *".
Add "heur_dissector_add()", the routine to add a heuristic dissector to
a list of heuristic dissectors, to the set of routines we can export to
plugins through a table on platforms where dynamically-loaded code can't
call stuff in the main program, and initialize the element in the table
in question for "dissector_add()" (which we'd forgotten to do).
svn path=/trunk/; revision=1909
2000-05-05 09:32:36 +00:00
|
|
|
/* List of "heuristic" dissectors (which get handed a packet, look at it,
|
|
|
|
and either recognize it as being for their protocol, dissect it, and
|
|
|
|
return TRUE, or don't recognize it and return FALSE) to be called
|
|
|
|
by another dissector. */
|
|
|
|
typedef GSList *heur_dissector_list_t;
|
|
|
|
|
2011-09-05 13:04:23 +00:00
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
heur_dissector_t dissector;
|
|
|
|
protocol_t *protocol;
|
2011-12-15 20:39:01 +00:00
|
|
|
gboolean enabled;
|
2011-09-05 13:04:23 +00:00
|
|
|
} heur_dtbl_entry_t;
|
|
|
|
|
2004-06-08 05:42:57 +00:00
|
|
|
/** A protocol uses this function to register a heuristic sub-dissector list.
|
|
|
|
* Call this in the parent dissectors proto_register function.
|
|
|
|
*
|
|
|
|
* @param name the name of this protocol
|
|
|
|
* @param list the list of heuristic sub-dissectors to be registered
|
|
|
|
*/
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void register_heur_dissector_list(const char *name,
|
|
|
|
heur_dissector_list_t *list);
|
Add routines to:
register lists of "heuristic" dissectors, which are handed a
frame that may or may contain a payload for the protocol they
dissect, and that return FALSE if it's not or dissect the packet
and return TRUE if it is;
add a dissector to such a list;
go through such a list, calling each dissector until either a
dissector returns TRUE, in which case the routine returns TRUE,
or it runs out of entries in the list, in which case the routine
returns FALSE.
Have lists of heuristic dissectors for TCP and for COTP when used with
the Inactive Subset of CLNP, and add the GIOP and Yahoo Messenger
dissectors to the first list and the Sinec H1 dissector to the second
list.
Make the dissector name argument to "dissector_add()" and
"dissector_delete()" a "const char *" rarther than just a "char *".
Add "heur_dissector_add()", the routine to add a heuristic dissector to
a list of heuristic dissectors, to the set of routines we can export to
plugins through a table on platforms where dynamically-loaded code can't
call stuff in the main program, and initialize the element in the table
in question for "dissector_add()" (which we'd forgotten to do).
svn path=/trunk/; revision=1909
2000-05-05 09:32:36 +00:00
|
|
|
|
2011-09-05 13:04:23 +00:00
|
|
|
extern void dissector_all_heur_tables_foreach_table (DATFunc_heur_table func,
|
|
|
|
gpointer user_data);
|
|
|
|
|
2004-06-08 05:42:57 +00:00
|
|
|
/** Try all the dissectors in a given heuristic dissector list. This is done,
|
|
|
|
* until we find one that recognizes the protocol.
|
|
|
|
* Call this while the parent dissector running.
|
|
|
|
*
|
|
|
|
* @param sub_dissectors the sub-dissector list
|
|
|
|
* @param tvb the tv_buff with the (remaining) packet data
|
|
|
|
* @param pinfo the packet info of this packet (additional info)
|
|
|
|
* @param tree the protocol tree to be build or NULL
|
2012-09-11 08:26:48 +00:00
|
|
|
* @param data parameter to pass to subdissector
|
2004-06-08 05:42:57 +00:00
|
|
|
* @return TRUE if the packet was recognized by the sub-dissector (stop dissection here)
|
|
|
|
*/
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern gboolean dissector_try_heuristic(heur_dissector_list_t sub_dissectors,
|
2012-09-11 08:26:48 +00:00
|
|
|
tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data);
|
Add routines to:
register lists of "heuristic" dissectors, which are handed a
frame that may or may contain a payload for the protocol they
dissect, and that return FALSE if it's not or dissect the packet
and return TRUE if it is;
add a dissector to such a list;
go through such a list, calling each dissector until either a
dissector returns TRUE, in which case the routine returns TRUE,
or it runs out of entries in the list, in which case the routine
returns FALSE.
Have lists of heuristic dissectors for TCP and for COTP when used with
the Inactive Subset of CLNP, and add the GIOP and Yahoo Messenger
dissectors to the first list and the Sinec H1 dissector to the second
list.
Make the dissector name argument to "dissector_add()" and
"dissector_delete()" a "const char *" rarther than just a "char *".
Add "heur_dissector_add()", the routine to add a heuristic dissector to
a list of heuristic dissectors, to the set of routines we can export to
plugins through a table on platforms where dynamically-loaded code can't
call stuff in the main program, and initialize the element in the table
in question for "dissector_add()" (which we'd forgotten to do).
svn path=/trunk/; revision=1909
2000-05-05 09:32:36 +00:00
|
|
|
|
2004-06-08 05:42:57 +00:00
|
|
|
/** Add a sub-dissector to a heuristic dissector list.
|
|
|
|
* Call this in the proto_handoff function of the sub-dissector.
|
|
|
|
*
|
|
|
|
* @param name the name of the "parent" protocol, e.g. "tcp"
|
|
|
|
* @param dissector the sub-dissector to be registered
|
|
|
|
* @param proto the protocol id of the sub-dissector
|
|
|
|
*/
|
|
|
|
extern void heur_dissector_add(const char *name, heur_dissector_t dissector,
|
2010-04-03 18:18:50 +00:00
|
|
|
const int proto);
|
2004-06-08 05:42:57 +00:00
|
|
|
|
2007-08-07 21:26:07 +00:00
|
|
|
/** Remove a sub-dissector from a heuristic dissector list.
|
|
|
|
* Call this in the prefs_reinit function of the sub-dissector.
|
|
|
|
*
|
|
|
|
* @param name the name of the "parent" protocol, e.g. "tcp"
|
|
|
|
* @param dissector the sub-dissector to be unregistered
|
|
|
|
* @param proto the protocol id of the sub-dissector
|
|
|
|
*/
|
2010-04-03 18:18:50 +00:00
|
|
|
extern void heur_dissector_delete(const char *name, heur_dissector_t dissector, const int proto);
|
2007-08-07 21:26:07 +00:00
|
|
|
|
2012-01-20 02:43:37 +00:00
|
|
|
/** Enable/Disable a sub-dissector in a heuristic dissector list
|
|
|
|
* Call this in the prefs_reinit function of the sub-dissector.
|
|
|
|
*
|
|
|
|
* @param name the name of the "parent" protocol, e.g. "tcp"
|
|
|
|
* @param dissector the sub-dissector to be disabled/enabled
|
|
|
|
* @param proto the protocol id of the sub-dissector
|
|
|
|
* @param TRUE/FALSE to enable/disable the sub-dissector
|
|
|
|
*/
|
|
|
|
extern void heur_dissector_set_enabled(const char *name, heur_dissector_t dissector, const int proto, const gboolean enabled);
|
|
|
|
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
/* Register a dissector. */
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void register_dissector(const char *name, dissector_t dissector,
|
2010-04-03 18:18:50 +00:00
|
|
|
const int proto);
|
2002-02-26 11:55:39 +00:00
|
|
|
extern void new_register_dissector(const char *name, new_dissector_t dissector,
|
2010-04-03 18:18:50 +00:00
|
|
|
const int proto);
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
|
2011-03-31 12:14:59 +00:00
|
|
|
/* Get the long name of the protocol for a dissector handle. */
|
|
|
|
extern const char *dissector_handle_get_long_name(const dissector_handle_t handle);
|
|
|
|
|
2001-12-03 04:00:26 +00:00
|
|
|
/* Get the short name of the protocol for a dissector handle. */
|
2010-04-03 18:18:50 +00:00
|
|
|
extern const char *dissector_handle_get_short_name(const dissector_handle_t handle);
|
2001-12-03 04:00:26 +00:00
|
|
|
|
2002-11-15 03:10:36 +00:00
|
|
|
/* Get the index of the protocol for a dissector handle. */
|
2010-04-03 18:18:50 +00:00
|
|
|
extern int dissector_handle_get_protocol_index(const dissector_handle_t handle);
|
2002-11-15 03:10:36 +00:00
|
|
|
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
/* Find a dissector by name. */
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern dissector_handle_t find_dissector(const char *name);
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
|
2001-11-27 07:13:32 +00:00
|
|
|
/* Create an anonymous handle for a dissector. */
|
|
|
|
extern dissector_handle_t create_dissector_handle(dissector_t dissector,
|
2010-04-03 18:18:50 +00:00
|
|
|
const int proto);
|
2002-04-28 00:13:05 +00:00
|
|
|
extern dissector_handle_t new_create_dissector_handle(new_dissector_t dissector,
|
2010-04-03 18:18:50 +00:00
|
|
|
const int proto);
|
2001-11-27 07:13:32 +00:00
|
|
|
|
2005-05-11 10:40:53 +00:00
|
|
|
/* Call a dissector through a handle and if no dissector was found
|
2012-05-10 16:09:10 +00:00
|
|
|
* pass it over to the "data" dissector instead.
|
2005-06-03 06:35:44 +00:00
|
|
|
*
|
|
|
|
* @param handle The dissector to call.
|
|
|
|
* @param tvb The buffer to dissect.
|
|
|
|
* @param pinfo Packet Info.
|
|
|
|
* @param tree The protocol tree.
|
2012-09-11 09:06:13 +00:00
|
|
|
* @param data parameter to pass to dissector
|
2010-10-30 16:00:30 +00:00
|
|
|
* @return If the protocol for that handle isn't enabled call the data
|
|
|
|
* dissector. Otherwise, if the handle refers to a new-style
|
|
|
|
* dissector, call the dissector and return its return value, otherwise call
|
2005-06-03 06:35:44 +00:00
|
|
|
* it and return the length of the tvbuff pointed to by the argument.
|
2005-05-11 10:40:53 +00:00
|
|
|
*/
|
2012-09-11 09:06:13 +00:00
|
|
|
extern int call_dissector_with_data(dissector_handle_t handle, tvbuff_t *tvb,
|
|
|
|
packet_info *pinfo, proto_tree *tree, void *data);
|
2002-02-26 11:55:39 +00:00
|
|
|
extern int call_dissector(dissector_handle_t handle, tvbuff_t *tvb,
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
packet_info *pinfo, proto_tree *tree);
|
2010-10-30 16:00:30 +00:00
|
|
|
|
2005-05-11 10:40:53 +00:00
|
|
|
/* Call a dissector through a handle but if no dissector was found
|
|
|
|
* just return 0 and do not call the "data" dissector instead.
|
2005-06-03 06:35:44 +00:00
|
|
|
*
|
|
|
|
* @param handle The dissector to call.
|
|
|
|
* @param tvb The buffer to dissect.
|
|
|
|
* @param pinfo Packet Info.
|
|
|
|
* @param tree The protocol tree.
|
2012-09-11 09:06:13 +00:00
|
|
|
* @param data parameter to pass to dissector
|
2005-06-03 06:35:44 +00:00
|
|
|
* @return If the protocol for that handle isn't enabled, return 0 without
|
2010-10-30 16:00:30 +00:00
|
|
|
* calling the dissector. Otherwise, if the handle refers to a new-style
|
|
|
|
* dissector, call the dissector and return its return value, otherwise call
|
2005-06-03 06:35:44 +00:00
|
|
|
* it and return the length of the tvbuff pointed to by the argument.
|
2005-05-11 10:40:53 +00:00
|
|
|
*/
|
|
|
|
extern int call_dissector_only(dissector_handle_t handle, tvbuff_t *tvb,
|
2012-09-11 08:28:07 +00:00
|
|
|
packet_info *pinfo, proto_tree *tree, void *data);
|
Add a mechanism by which a dissector can be registered by name, another
dissector can get a "handle" for that dissector by name and then call
that dissector through the handle.
This allows dissectors that can't be called through a port table or a
heuristic table to be called from other dissectors without directly
referring to the dissector function - dynamically-loaded modules, under
Windows, cannot directly call functions in the main program, and
non-plugin dissectors are in the main program and thus cannot be called
from plugin dissectors unless either
1) a pointer to the dissector is put in the Big Transfer Vector
or
2) some other mechanism for getting a pointer to the dissector
is provided.
This mechanism could also support registering old-style dissectors and
calling them from new-style dissectors without the new-style dissector
having to do the argument translation itself (I didn't add support for
registering old-style dissectors because I'd prefer to have people
tvbuffify their code if they have to register a dissector...).
It could also, in the future, perhaps support
disabling of protocols;
setting "pinfo->current_proto";
inside "call_dissector()" - and inside "{old_}dissector_try_port()" and
"{old_"dissector_try_heuristic()" - allowing a pile of stuff that
currently has to be done in every dissector be done by common code.
(I have some ideas about how to do this, by
having "proto_register_protocol()" take an abbreviation - of the
sort that would be put in, for example, "pinfo->current_proto" -
as an argument;
having the calls to register dissectors take an index returned
by "proto_register_protocol()" as an argument.
The abbreviation could be used elsewhere as well, e.g. in the "Decoding"
tab of the "Edit->Protocols" dialog box, and in a GUI for constructing
protocol filters. Watch this space.)
Make "dissect_sdp()" the first client of this mechanism; it's now static
to "packet-sdp.c", and all dissectors that call it - including the MGCP
plugin - now call it through a dissector handle fetched by
"find_dissector()". (Next step - see if Ethereal can now compile on
Windows as a result of this.)
svn path=/trunk/; revision=2647
2000-11-15 07:07:52 +00:00
|
|
|
|
2000-04-04 07:03:07 +00:00
|
|
|
/* Do all one-time initialization. */
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void dissect_init(void);
|
2000-04-04 07:03:07 +00:00
|
|
|
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void dissect_cleanup(void);
|
2000-04-04 07:03:07 +00:00
|
|
|
|
2001-06-29 09:46:54 +00:00
|
|
|
/*
|
2002-02-17 00:51:21 +00:00
|
|
|
* Given a tvbuff, and a length from a packet header, adjust the length
|
|
|
|
* of the tvbuff to reflect the specified length.
|
2001-06-29 09:46:54 +00:00
|
|
|
*/
|
2010-04-03 18:18:50 +00:00
|
|
|
extern void set_actual_length(tvbuff_t *tvb, const guint specified_len);
|
2001-06-29 09:46:54 +00:00
|
|
|
|
Provide a general mechanism by which dissectors can register "init"
routines, which are called before a dissection pass is made over all the
packets in a capture - the "init" routine would clear out any state
information that needs to be initialized before such a dissection pass.
Make the NCP, SMB, AFS, and ONC RPC dissectors register their "init"
routines with that mechanism, have the code that reads in a capture file
call the routine that calls all registered "init" routines rather than
calling a wired-in set of "init" routines, and also have the code that
runs a filtering or colorizing pass over all the packets call that
routine, as a filtering or colorizing pass is a dissection pass.
Have the ONC RPC "init" routine zero out the table of RPC calls, so that
it completely erases any state from the previous dissection pass (so
that, for example, if you run a filtering pass, it doesn't mark any
non-duplicate packets as duplicates because it remembers them from the
previous pass).
svn path=/trunk/; revision=1050
1999-11-17 21:58:33 +00:00
|
|
|
/* Allow protocols to register "init" routines, which are called before
|
|
|
|
we make a pass through a capture file and dissect all its packets
|
|
|
|
(e.g., when we read in a new capture file, or run a "filter packets"
|
|
|
|
or "colorize packets" pass over the current capture file). */
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void register_init_routine(void (*func)(void));
|
Provide a general mechanism by which dissectors can register "init"
routines, which are called before a dissection pass is made over all the
packets in a capture - the "init" routine would clear out any state
information that needs to be initialized before such a dissection pass.
Make the NCP, SMB, AFS, and ONC RPC dissectors register their "init"
routines with that mechanism, have the code that reads in a capture file
call the routine that calls all registered "init" routines rather than
calling a wired-in set of "init" routines, and also have the code that
runs a filtering or colorizing pass over all the packets call that
routine, as a filtering or colorizing pass is a dissection pass.
Have the ONC RPC "init" routine zero out the table of RPC calls, so that
it completely erases any state from the previous dissection pass (so
that, for example, if you run a filtering pass, it doesn't mark any
non-duplicate packets as duplicates because it remembers them from the
previous pass).
svn path=/trunk/; revision=1050
1999-11-17 21:58:33 +00:00
|
|
|
|
2002-02-24 06:45:14 +00:00
|
|
|
/* Initialize all data structures used for dissection. */
|
|
|
|
extern void init_dissection(void);
|
2005-03-23 12:58:59 +00:00
|
|
|
|
|
|
|
/* Free data structures allocated for dissection. */
|
|
|
|
extern void cleanup_dissection(void);
|
1999-10-10 11:50:45 +00:00
|
|
|
|
2002-01-05 04:12:17 +00:00
|
|
|
/* Allow protocols to register a "cleanup" routine to be
|
|
|
|
* run after the initial sequential run through the packets.
|
|
|
|
* Note that the file can still be open after this; this is not
|
|
|
|
* the final cleanup. */
|
|
|
|
extern void register_postseq_cleanup_routine(void (*func)(void));
|
|
|
|
|
|
|
|
/* Call all the registered "postseq_cleanup" routines. */
|
|
|
|
extern void postseq_cleanup_all_protocols(void);
|
|
|
|
|
2002-05-09 23:50:34 +00:00
|
|
|
/* Allow dissectors to register a "final_registration" routine
|
|
|
|
* that is run like the proto_register_XXX() routine, but the end
|
|
|
|
* end of the epan_init() function; that is, *after* all other
|
|
|
|
* subsystems, liked dfilters, have finished initializing. This is
|
|
|
|
* useful for dissector registration routines which need to compile
|
|
|
|
* display filters. dfilters can't initialize itself until all protocols
|
|
|
|
* have registereed themselvs. */
|
2003-07-31 18:34:52 +00:00
|
|
|
extern void
|
2002-05-09 23:50:34 +00:00
|
|
|
register_final_registration_routine(void (*func)(void));
|
|
|
|
|
|
|
|
/* Call all the registered "final_registration" routines. */
|
2003-07-31 18:34:52 +00:00
|
|
|
extern void
|
2002-05-09 23:50:34 +00:00
|
|
|
final_registration_all_protocols(void);
|
|
|
|
|
2002-02-18 01:08:44 +00:00
|
|
|
/*
|
|
|
|
* Add a new data source to the list of data sources for a frame, given
|
|
|
|
* the tvbuff for the data source and its name.
|
|
|
|
*/
|
2010-10-30 16:00:30 +00:00
|
|
|
extern void add_new_data_source(packet_info *pinfo, tvbuff_t *tvb,
|
|
|
|
const char *name);
|
2002-02-18 01:08:44 +00:00
|
|
|
|
2012-10-20 19:54:56 +00:00
|
|
|
|
2009-07-12 10:19:13 +00:00
|
|
|
/*
|
2012-10-20 19:54:56 +00:00
|
|
|
* Return the data source name, tvb.
|
2009-07-12 10:19:13 +00:00
|
|
|
*/
|
2012-10-20 19:54:56 +00:00
|
|
|
struct data_source;
|
|
|
|
extern const char *get_data_source_name(const struct data_source *src);
|
|
|
|
extern tvbuff_t *get_data_source_tvb(const struct data_source *src);
|
2009-07-12 10:19:13 +00:00
|
|
|
|
2002-02-18 01:08:44 +00:00
|
|
|
/*
|
|
|
|
* Free up a frame's list of data sources.
|
|
|
|
*/
|
2002-06-04 07:03:57 +00:00
|
|
|
extern void free_data_sources(packet_info *pinfo);
|
2002-02-18 01:08:44 +00:00
|
|
|
|
2012-02-28 03:19:49 +00:00
|
|
|
/* Mark another frame as depended upon by the current frame.
|
|
|
|
*
|
|
|
|
* This information is used to ensure that the dependend-upon frame is saved
|
|
|
|
* if the user does a File->Save-As of only the Displayed packets and the
|
|
|
|
* current frame passed the display filter.
|
|
|
|
*/
|
|
|
|
extern void mark_frame_as_depended_upon(packet_info *pinfo, guint32 frame_num);
|
|
|
|
|
1998-09-16 02:39:15 +00:00
|
|
|
/*
|
2000-10-06 10:11:40 +00:00
|
|
|
* Dissectors should never modify the packet data.
|
1998-09-16 02:39:15 +00:00
|
|
|
*/
|
2001-12-18 19:09:08 +00:00
|
|
|
extern void dissect_packet(epan_dissect_t *edt,
|
2012-10-16 21:50:57 +00:00
|
|
|
struct wtap_pkthdr *phdr, const guchar *pd,
|
2001-12-10 00:26:21 +00:00
|
|
|
frame_data *fd, column_info *cinfo);
|
1999-02-15 06:36:57 +00:00
|
|
|
|
2001-01-18 07:44:41 +00:00
|
|
|
/* These functions are in packet-ethertype.c */
|
2002-08-02 21:29:45 +00:00
|
|
|
extern void capture_ethertype(guint16 etype, const guchar *pd, int offset,
|
2001-11-20 21:59:18 +00:00
|
|
|
int len, packet_counts *ld);
|
Put "extern" in front of a pile of function declarations.
It makes no difference if they really are function declarations;
however, in plugins, when building on OSes that don't let
dynamically-loaded modules access functions in the main program (e.g.,
Windows), when compiling a plugin, <plugin_api.h> defines the names of
those functions as (*pointer_name), so they turn into declarations of
pointer variables pointing to the functions in question, and, on
platforms with a def/ref model in the linker, if a plugin has more than
one source file that gets linked into the plugin, the linker may get
upset at two definitions of the same variable.
svn path=/trunk/; revision=4114
2001-10-31 07:47:27 +00:00
|
|
|
extern void ethertype(guint16 etype, tvbuff_t *tvb, int offset_after_ethertype,
|
2001-01-18 07:44:41 +00:00
|
|
|
packet_info *pinfo, proto_tree *tree, proto_tree *fh_tree,
|
2003-10-01 07:11:49 +00:00
|
|
|
int etype_id, int trailer_id, int fcs_len);
|
1998-09-16 02:39:15 +00:00
|
|
|
|
2005-03-11 16:17:41 +00:00
|
|
|
/*
|
|
|
|
* Dump layer/selector/dissector records in a fashion similar to the
|
|
|
|
* proto_registrar_dump_* routines.
|
|
|
|
*/
|
2005-03-12 07:37:14 +00:00
|
|
|
extern void dissector_dump_decodes(void);
|
2005-03-11 16:17:41 +00:00
|
|
|
|
2011-12-28 15:05:59 +00:00
|
|
|
/*
|
|
|
|
* For each heuristic dissector table, dump list of dissectors (filter_names) for that table
|
|
|
|
*/
|
|
|
|
extern void dissector_dump_heur_decodes(void);
|
|
|
|
|
2006-01-24 00:26:57 +00:00
|
|
|
/*
|
|
|
|
* post dissectors are to be called by packet-frame.c after every other
|
|
|
|
* dissector has been called.
|
|
|
|
*/
|
|
|
|
extern void register_postdissector(dissector_handle_t);
|
2008-10-31 18:44:46 +00:00
|
|
|
extern gboolean have_postdissector(void);
|
2006-01-24 00:26:57 +00:00
|
|
|
extern void call_all_postdissectors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
|
2007-01-18 18:43:30 +00:00
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif /* __cplusplus */
|
|
|
|
|
1998-09-16 02:39:15 +00:00
|
|
|
#endif /* packet.h */
|