2000-05-11 08:18:09 +00:00
|
|
|
/* tvbuff.h
|
|
|
|
*
|
|
|
|
* Testy, Virtual(-izable) Buffer of guint8*'s
|
2002-08-28 20:41:00 +00:00
|
|
|
*
|
2000-05-11 08:18:09 +00:00
|
|
|
* "Testy" -- the buffer gets mad when an attempt is made to access data
|
|
|
|
* beyond the bounds of the buffer. An exception is thrown.
|
|
|
|
*
|
|
|
|
* "Virtual" -- the buffer can have its own data, can use a subset of
|
|
|
|
* the data of a backing tvbuff, or can be a composite of
|
|
|
|
* other tvbuffs.
|
|
|
|
*
|
2004-07-18 00:24:25 +00:00
|
|
|
* $Id$
|
2000-05-11 08:18:09 +00:00
|
|
|
*
|
2001-11-13 23:55:44 +00:00
|
|
|
* Copyright (c) 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
|
2000-05-11 08:18:09 +00:00
|
|
|
*
|
2006-05-21 05:12:17 +00:00
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
2000-05-11 08:18:09 +00:00
|
|
|
* Copyright 1998 Gerald Combs
|
2002-08-28 20:41:00 +00:00
|
|
|
*
|
2000-05-11 08:18:09 +00:00
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version 2
|
|
|
|
* of the License, or (at your option) any later version.
|
2002-08-28 20:41:00 +00:00
|
|
|
*
|
2000-05-11 08:18:09 +00:00
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* 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
|
|
|
*
|
2000-05-11 08:18:09 +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
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __TVBUFF_H__
|
|
|
|
#define __TVBUFF_H__
|
|
|
|
|
|
|
|
#include <glib.h>
|
2005-09-11 21:25:37 +00:00
|
|
|
#include <epan/ipv6-utils.h>
|
2006-03-10 11:58:22 +00:00
|
|
|
#include <epan/guid-utils.h>
|
2000-05-11 08:18:09 +00:00
|
|
|
#include "exceptions.h"
|
|
|
|
|
strcasecmp(), strncasecmp(), g_strcasecmp(), and g_strncasecmp() delenda
est. Use g_ascii_strcasecmp() and g_ascii_strncasecmp(), and supply our
own versions if they're missing from GLib (as is the case with GLib
1.x).
In the code to build the list of named fields for Diameter, don't use
g_strdown(); do our own g_ascii_-style upper-case to lower-case mapping
in the hash function and use g_ascii_strcasecmp() in the compare
function.
We do this because there is no guarantee that toupper(), tolower(), and
functions that use them will, for example, map between "I" and "i" in
all locales; in Turkish locales, for example, there are, in both
upper case and lower case, versions of "i" with and without a dot, and
the upper-case version of "i" is "I"-with-a-dot and the lower-case
version of "I" is "i"-without-a-dot. This causes strings that should
match not to match.
This finishes fixing bug 2010 - an earlier checkin prevented the crash
(as there are other ways to produce the same crash, e.g. a bogus
dictionary.xml file), but didn't fix the case-insensitive string matching.
svn path=/trunk/; revision=23623
2007-11-27 18:52:51 +00:00
|
|
|
#ifdef NEED_G_ASCII_STRCASECMP_H
|
|
|
|
#include "g_ascii_strcasecmp.h"
|
|
|
|
#endif
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** @file
|
|
|
|
* "testy, virtual(-izable) buffer". They are testy in that they get mad when
|
|
|
|
* an attempt is made to access data beyond the bounds of their array. In that
|
|
|
|
* case, they throw an exception.
|
|
|
|
*
|
|
|
|
* They are virtualizable in that new tvbuff's can be made from other tvbuffs,
|
|
|
|
* while only the original tvbuff may have data. That is, the new tvbuff has
|
|
|
|
* virtual data.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/** The different types of tvbuff's */
|
2000-05-11 08:18:09 +00:00
|
|
|
typedef enum {
|
|
|
|
TVBUFF_REAL_DATA,
|
|
|
|
TVBUFF_SUBSET,
|
|
|
|
TVBUFF_COMPOSITE
|
|
|
|
} tvbuff_type;
|
|
|
|
|
2003-12-02 10:23:18 +00:00
|
|
|
typedef struct {
|
|
|
|
/* The backing tvbuff_t */
|
|
|
|
struct tvbuff *tvb;
|
|
|
|
|
|
|
|
/* The offset/length of 'tvb' to which I'm privy */
|
|
|
|
guint offset;
|
|
|
|
guint length;
|
|
|
|
|
|
|
|
} tvb_backing_t;
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
GSList *tvbs;
|
|
|
|
|
|
|
|
/* Used for quick testing to see if this
|
|
|
|
* is the tvbuff that a COMPOSITE is
|
|
|
|
* interested in. */
|
|
|
|
guint *start_offsets;
|
|
|
|
guint *end_offsets;
|
|
|
|
|
|
|
|
} tvb_comp_t;
|
|
|
|
|
|
|
|
typedef void (*tvbuff_free_cb_t)(void*);
|
|
|
|
|
|
|
|
typedef struct tvbuff {
|
|
|
|
/* Record-keeping */
|
|
|
|
tvbuff_type type;
|
|
|
|
gboolean initialized;
|
|
|
|
guint usage_count;
|
|
|
|
struct tvbuff *ds_tvb; /* data source top-level tvbuff */
|
|
|
|
|
|
|
|
/* The tvbuffs in which this tvbuff is a member
|
|
|
|
* (that is, a backing tvbuff for a TVBUFF_SUBSET
|
|
|
|
* or a member for a TVB_COMPOSITE) */
|
|
|
|
GSList *used_in;
|
|
|
|
|
|
|
|
/* TVBUFF_SUBSET and TVBUFF_COMPOSITE keep track
|
|
|
|
* of the other tvbuff's they use */
|
|
|
|
union {
|
|
|
|
tvb_backing_t subset;
|
|
|
|
tvb_comp_t composite;
|
|
|
|
} tvbuffs;
|
|
|
|
|
|
|
|
/* We're either a TVBUFF_REAL_DATA or a
|
|
|
|
* TVBUFF_SUBSET that has a backing buffer that
|
|
|
|
* has real_data != NULL, or a TVBUFF_COMPOSITE
|
|
|
|
* which has flattened its data due to a call
|
|
|
|
* to tvb_get_ptr().
|
|
|
|
*/
|
2004-02-19 05:19:10 +00:00
|
|
|
const guint8 *real_data;
|
2003-12-02 10:23:18 +00:00
|
|
|
|
|
|
|
/* Length of virtual buffer (and/or real_data). */
|
|
|
|
guint length;
|
|
|
|
|
|
|
|
/* Reported length. */
|
|
|
|
guint reported_length;
|
|
|
|
|
|
|
|
/* Offset from beginning of first TVBUFF_REAL. */
|
|
|
|
gint raw_offset;
|
|
|
|
|
|
|
|
/* Func to call when actually freed */
|
|
|
|
tvbuff_free_cb_t free_cb;
|
|
|
|
} tvbuff_t;
|
|
|
|
|
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** TVBUFF_REAL_DATA contains a guint8* that points to real data.
|
2000-05-11 08:18:09 +00:00
|
|
|
* The data is allocated and contiguous.
|
|
|
|
*
|
|
|
|
* TVBUFF_SUBSET has a backing tvbuff. The TVBUFF_SUBSET is a "window"
|
|
|
|
* through which the program sees only a portion of the backing tvbuff.
|
|
|
|
*
|
|
|
|
* TVBUFF_COMPOSITE combines multiple tvbuffs sequentually to produce
|
|
|
|
* a larger byte array.
|
|
|
|
*
|
|
|
|
* tvbuff's of any type can be used as the backing-tvbuff of a
|
|
|
|
* TVBUFF_SUBSET or as the member of a TVBUFF_COMPOSITE.
|
|
|
|
* TVBUFF_COMPOSITEs can have member-tvbuffs of different types.
|
|
|
|
*
|
|
|
|
* Once a tvbuff is create/initialized/finalized, the tvbuff is read-only.
|
|
|
|
* That is, it cannot point to any other data. A new tvbuff must be created if
|
|
|
|
* you want a tvbuff that points to other data.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** "class" initialization. Called once during execution of program
|
2000-05-11 08:18:09 +00:00
|
|
|
* so that tvbuff.c can initialize its data. */
|
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 tvbuff_init(void);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** "class" cleanup. Called once during execution of program
|
2000-05-11 08:18:09 +00:00
|
|
|
* so that tvbuff.c can clean up its data. */
|
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 tvbuff_cleanup(void);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Returns a pointer to a newly initialized tvbuff. Note that
|
2000-05-11 08:18:09 +00:00
|
|
|
* tvbuff's of types TVBUFF_SUBSET and TVBUFF_COMPOSITE
|
|
|
|
* require further initialization via the appropriate functions */
|
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 tvbuff_t* tvb_new(tvbuff_type);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Marks a tvbuff for freeing. The guint8* data of a TVBUFF_REAL_DATA
|
2000-08-17 17:16:02 +00:00
|
|
|
* is *never* freed by the tvbuff routines. The tvbuff itself is actually freed
|
2000-11-14 04:33:34 +00:00
|
|
|
* once its usage count drops to 0.
|
2000-08-17 17:16:02 +00:00
|
|
|
*
|
|
|
|
* Usage counts increment for any time the tvbuff is
|
2000-05-11 08:18:09 +00:00
|
|
|
* used as a member of another tvbuff, i.e., as the backing buffer for
|
|
|
|
* a TVBUFF_SUBSET or as a member of a TVBUFF_COMPOSITE.
|
|
|
|
*
|
2000-08-17 17:16:02 +00:00
|
|
|
* Although you may call tvb_free(), the tvbuff may still be in use
|
|
|
|
* by other tvbuff's (TVBUFF_SUBSET or TVBUFF_COMPOSITE), so it is not
|
|
|
|
* safe, unless you know otherwise, to free your guint8* data. If you
|
|
|
|
* cannot be sure that your TVBUFF_REAL_DATA is not in use by another
|
|
|
|
* tvbuff, register a callback with tvb_set_free_cb(); when your tvbuff
|
|
|
|
* is _really_ freed, then your callback will be called, and at that time
|
|
|
|
* you can free your original data.
|
|
|
|
*
|
2000-05-11 08:18:09 +00:00
|
|
|
* The caller can artificially increment/decrement the usage count
|
|
|
|
* with tvbuff_increment_usage_count()/tvbuff_decrement_usage_count().
|
|
|
|
*/
|
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 tvb_free(tvbuff_t*);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Free the tvbuff_t and all tvbuff's created from it. */
|
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 tvb_free_chain(tvbuff_t*);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Both return the new usage count, after the increment or decrement */
|
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 guint tvb_increment_usage_count(tvbuff_t*, guint count);
|
2000-08-17 17:16:02 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** If a decrement causes the usage count to drop to 0, a the tvbuff
|
2000-05-11 08:18:09 +00:00
|
|
|
* is immediately freed. Be sure you know exactly what you're doing
|
|
|
|
* if you decide to use this function, as another tvbuff could
|
|
|
|
* still have a pointer to the just-freed tvbuff, causing corrupted data
|
|
|
|
* or a segfault in the future */
|
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 guint tvb_decrement_usage_count(tvbuff_t*, guint count);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Set a callback function to call when a tvbuff is actually freed
|
2000-05-11 08:18:09 +00:00
|
|
|
* (once the usage count drops to 0). One argument is passed to
|
2001-05-27 21:34:05 +00:00
|
|
|
* that callback --- a void* that points to the real data.
|
2000-05-11 08:18:09 +00:00
|
|
|
* Obviously, this only applies to a TVBUFF_REAL_DATA tvbuff. */
|
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 tvb_set_free_cb(tvbuff_t*, tvbuff_free_cb_t);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Attach a TVBUFF_REAL_DATA tvbuff to a parent tvbuff. This connection
|
2000-11-14 04:33:34 +00:00
|
|
|
* is used during a tvb_free_chain()... the "child" TVBUFF_REAL_DATA acts
|
|
|
|
* as if is part of the chain-of-creation of the parent tvbuff, although it
|
|
|
|
* isn't. This is useful if you need to take the data from some tvbuff,
|
|
|
|
* run some operation on it, like decryption or decompression, and make a new
|
|
|
|
* tvbuff from it, yet want the new tvbuff to be part of the chain. The reality
|
|
|
|
* is that the new tvbuff *is* part of the "chain of creation", but in a way
|
|
|
|
* that these tvbuff routines is ignorant of. Use this function to make
|
|
|
|
* the tvbuff routines knowledgable of this fact. */
|
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 tvb_set_child_real_data_tvbuff(tvbuff_t* parent, tvbuff_t* child);
|
2000-11-14 04:33:34 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**Sets parameters for TVBUFF_REAL_DATA. Can throw ReportedBoundsError. */
|
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 tvb_set_real_data(tvbuff_t*, const guint8* data, guint length,
|
|
|
|
gint reported_length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Combination of tvb_new() and tvb_set_real_data(). Can throw ReportedBoundsError. */
|
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 tvbuff_t* tvb_new_real_data(const guint8* data, guint length,
|
2002-02-18 01:08:44 +00:00
|
|
|
gint reported_length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Define the subset of the backing buffer to use.
|
2000-05-11 08:18:09 +00:00
|
|
|
*
|
|
|
|
* 'backing_offset' can be negative, to indicate bytes from
|
|
|
|
* the end of the backing buffer.
|
|
|
|
*
|
|
|
|
* 'backing_length' can be 0, although the usefulness of the buffer would
|
|
|
|
* be rather limited.
|
|
|
|
*
|
|
|
|
* 'backing_length' of -1 means "to the end of the backing buffer"
|
|
|
|
*
|
|
|
|
* Will throw BoundsError if 'backing_offset'/'length'
|
2000-09-13 20:17:23 +00:00
|
|
|
* is beyond the bounds of the backing tvbuff.
|
|
|
|
* Can throw ReportedBoundsError. */
|
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 tvb_set_subset(tvbuff_t* tvb, tvbuff_t* backing,
|
2000-05-16 04:44:14 +00:00
|
|
|
gint backing_offset, gint backing_length, gint reported_length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Combination of tvb_new() and tvb_set_subset()
|
2000-09-13 20:17:23 +00:00
|
|
|
* Can throw ReportedBoundsError. */
|
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 tvbuff_t* tvb_new_subset(tvbuff_t* backing,
|
2000-05-16 04:44:14 +00:00
|
|
|
gint backing_offset, gint backing_length, gint reported_length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Both tvb_composite_append and tvb_composite_prepend can throw
|
2000-05-11 08:18:09 +00:00
|
|
|
* BoundsError if member_offset/member_length goes beyond bounds of
|
|
|
|
* the 'member' tvbuff. */
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Append to the list of tvbuffs that make up this composite tvbuff */
|
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 tvb_composite_append(tvbuff_t* tvb, tvbuff_t* member);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Prepend to the list of tvbuffs that make up this composite tvbuff */
|
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 tvb_composite_prepend(tvbuff_t* tvb, tvbuff_t* member);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Helper function that calls tvb_new(TVBUFF_COMPOSITE).
|
2000-05-11 08:18:09 +00:00
|
|
|
* Provided only to maintain symmetry with other constructors */
|
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 tvbuff_t* tvb_new_composite(void);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Mark a composite tvbuff as initialized. No further appends or prepends
|
2000-05-11 08:18:09 +00:00
|
|
|
* occur, data access can finally happen after this finalization. */
|
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 tvb_composite_finalize(tvbuff_t* tvb);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
|
|
|
|
/* Get total length of buffer */
|
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 guint tvb_length(tvbuff_t*);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Computes bytes to end of buffer, from offset (which can be negative,
|
2000-05-11 08:18:09 +00:00
|
|
|
* to indicate bytes from end of buffer). Function returns -1 to
|
|
|
|
* indicate that offset is out of bounds. No exception is thrown. */
|
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 gint tvb_length_remaining(tvbuff_t*, gint offset);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Same as above, but throws an exception if the offset is out of bounds. */
|
2002-05-05 00:57:59 +00:00
|
|
|
extern guint tvb_ensure_length_remaining(tvbuff_t*, gint offset);
|
2002-02-01 04:34:17 +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
|
|
|
/* Checks (w/o throwing exception) that the bytes referred to by
|
|
|
|
* 'offset'/'length' actually exist in the buffer */
|
|
|
|
extern gboolean tvb_bytes_exist(tvbuff_t*, gint offset, gint length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Checks that the bytes referred to by 'offset'/'length' actually exist
|
2002-05-13 01:24:47 +00:00
|
|
|
* in the buffer, and throws an exception if they aren't. */
|
|
|
|
extern void tvb_ensure_bytes_exist(tvbuff_t *tvb, gint offset, gint length);
|
|
|
|
|
2000-05-11 08:18:09 +00:00
|
|
|
/* Checks (w/o throwing exception) that offset exists in buffer */
|
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 tvb_offset_exists(tvbuff_t*, gint offset);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
Add "tvb_reported_length()" to get the "reported length" of a tvbuff
(i.e., the amount of data that was in the packet, even if not all of it
was captured), for use when dissecting packets containing data that
fills the packet (we want the dissector to try to dissect all of it; if
it runs past the end of the captured data, we want it to throw an
exception so that we'll put a "Short Frame" note in the protocol tree).
This means we always want a tvbuff to have a real reported length value,
so we make it an unsigned integer, and don't bother checking it for -1,
as it should never be -1.
If the reported length passed in to "tvb_set_subset()" is -1, set the
reported length to the reported length of the tvbuff of which the new
tvbuff will be a subset minus the offset in that tvbuff of the subset,
so that "-1" means "what's left of the packet after we chop off the
header". This is necessary in order to ensure that all tvbuffs have a
real reported length value.
Have "dissect_packet()" set the reported length of the top-level tvbuff
to the reported length of the frame, so that we start out with a tvbuff
with a real reported length value.
Have "tvb_offset_exists()" return FALSE if the offset is past the end of
the tvbuff.
If the offset passed to it is postitive, have "compute_offset_length()"
check for that it's not more than one byte past the end of the tvbuff -
if it's just past the end, we don't want the check to fail, as we don't
want attempts to create a subset tvbuff containing zero bytes to fail;
that would be done if a captured packet was all header and no payload,
and we'd want the dissector of the payload, not the dissector of the
header, to throw an exception, as the problem isn't with the protocol
for the header, it's with the protocol for the payload.
Convert the ATM dissector, the SSCOP dissector, the Q.2931 dissector,
and the Q.931 dissector to use tvbuffs.
Make the LAPD dissector set up a tvbuff for the Q.931 dissector (it's
not converted yet).
svn path=/trunk/; revision=2023
2000-05-29 08:57:42 +00:00
|
|
|
/* Get reported length of buffer */
|
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 guint tvb_reported_length(tvbuff_t*);
|
Add "tvb_reported_length()" to get the "reported length" of a tvbuff
(i.e., the amount of data that was in the packet, even if not all of it
was captured), for use when dissecting packets containing data that
fills the packet (we want the dissector to try to dissect all of it; if
it runs past the end of the captured data, we want it to throw an
exception so that we'll put a "Short Frame" note in the protocol tree).
This means we always want a tvbuff to have a real reported length value,
so we make it an unsigned integer, and don't bother checking it for -1,
as it should never be -1.
If the reported length passed in to "tvb_set_subset()" is -1, set the
reported length to the reported length of the tvbuff of which the new
tvbuff will be a subset minus the offset in that tvbuff of the subset,
so that "-1" means "what's left of the packet after we chop off the
header". This is necessary in order to ensure that all tvbuffs have a
real reported length value.
Have "dissect_packet()" set the reported length of the top-level tvbuff
to the reported length of the frame, so that we start out with a tvbuff
with a real reported length value.
Have "tvb_offset_exists()" return FALSE if the offset is past the end of
the tvbuff.
If the offset passed to it is postitive, have "compute_offset_length()"
check for that it's not more than one byte past the end of the tvbuff -
if it's just past the end, we don't want the check to fail, as we don't
want attempts to create a subset tvbuff containing zero bytes to fail;
that would be done if a captured packet was all header and no payload,
and we'd want the dissector of the payload, not the dissector of the
header, to throw an exception, as the problem isn't with the protocol
for the header, it's with the protocol for the payload.
Convert the ATM dissector, the SSCOP dissector, the Q.2931 dissector,
and the Q.931 dissector to use tvbuffs.
Make the LAPD dissector set up a tvbuff for the Q.931 dissector (it's
not converted yet).
svn path=/trunk/; revision=2023
2000-05-29 08:57:42 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Computes bytes of reported packet data to end of buffer, from offset
|
2000-12-27 12:48:27 +00:00
|
|
|
* (which can be negative, to indicate bytes from end of buffer). Function
|
|
|
|
* returns -1 to indicate that offset is out of bounds. No exception is
|
|
|
|
* thrown. */
|
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 gint tvb_reported_length_remaining(tvbuff_t *tvb, gint offset);
|
2000-12-27 12:48:27 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Set the reported length of a tvbuff to a given value; used for protocols
|
Tvbuffify the IP, ICMP, TCP, UDP, OSI CLNP, OSI COTP, OSI CLTP, and OSI
ESIS dissectors.
Register the IP dissector and have dissectors that call it directly
(rather than through a port table) call it through a handle.
Add a routine "tvb_set_reported_length()" which a dissector can use if
it was handed a tvbuff that contains more data than is actually in its
part of the packet - for example, handing a padded Ethernet frame to IP;
the routine sets the reported length of the tvbuff (and also adjusts the
actual length, as appropriate). Then use it in IP.
Given that, "ethertype()" can determine how much of the Ethernet frame
was actually part of an IP datagram (and can do the same for other
protocols under Ethernet that use "tvb_set_reported_length()"; have it
return the actual length, and have "dissect_eth()" and "dissect_vlan()"
use that to mark trailer data in Ethernet II frames as well as in 802.3
frames.
svn path=/trunk/; revision=2658
2000-11-18 10:38:33 +00:00
|
|
|
whose headers contain an explicit length and where the calling
|
|
|
|
dissector's payload may include padding as well as the packet for
|
|
|
|
this protocol.
|
|
|
|
|
|
|
|
Also adjusts the data length. */
|
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 tvb_set_reported_length(tvbuff_t*, guint);
|
Tvbuffify the IP, ICMP, TCP, UDP, OSI CLNP, OSI COTP, OSI CLTP, and OSI
ESIS dissectors.
Register the IP dissector and have dissectors that call it directly
(rather than through a port table) call it through a handle.
Add a routine "tvb_set_reported_length()" which a dissector can use if
it was handed a tvbuff that contains more data than is actually in its
part of the packet - for example, handing a padded Ethernet frame to IP;
the routine sets the reported length of the tvbuff (and also adjusts the
actual length, as appropriate). Then use it in IP.
Given that, "ethertype()" can determine how much of the Ethernet frame
was actually part of an IP datagram (and can do the same for other
protocols under Ethernet that use "tvb_set_reported_length()"; have it
return the actual length, and have "dissect_eth()" and "dissect_vlan()"
use that to mark trailer data in Ethernet II frames as well as in 802.3
frames.
svn path=/trunk/; revision=2658
2000-11-18 10:38:33 +00:00
|
|
|
|
2003-12-03 09:50:40 +00:00
|
|
|
extern int offset_from_real_beginning(tvbuff_t *tvb, int counter);
|
|
|
|
|
2001-11-20 22:46:12 +00:00
|
|
|
/* Returns the offset from the first byte of real data. */
|
2003-12-03 09:50:40 +00:00
|
|
|
#define TVB_RAW_OFFSET(tvb) \
|
|
|
|
((tvb->raw_offset==-1)?(tvb->raw_offset = offset_from_real_beginning(tvb, 0)):tvb->raw_offset)
|
2000-05-11 08:18:09 +00:00
|
|
|
|
|
|
|
/************** START OF ACCESSORS ****************/
|
2002-05-13 01:24:47 +00:00
|
|
|
/* All accessors will throw an exception if appropriate */
|
2000-05-11 08:18:09 +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 guint8 tvb_get_guint8(tvbuff_t*, gint offset);
|
2000-05-15 04:37:27 +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 guint16 tvb_get_ntohs(tvbuff_t*, gint offset);
|
|
|
|
extern guint32 tvb_get_ntoh24(tvbuff_t*, gint offset);
|
|
|
|
extern guint32 tvb_get_ntohl(tvbuff_t*, gint offset);
|
2004-08-22 00:31:58 +00:00
|
|
|
extern guint64 tvb_get_ntoh64(tvbuff_t*, gint offset);
|
2002-04-24 21:53:05 +00:00
|
|
|
extern gfloat tvb_get_ntohieee_float(tvbuff_t*, gint offset);
|
|
|
|
extern gdouble tvb_get_ntohieee_double(tvbuff_t*, gint offset);
|
2000-05-15 04:37:27 +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 guint16 tvb_get_letohs(tvbuff_t*, gint offset);
|
|
|
|
extern guint32 tvb_get_letoh24(tvbuff_t*, gint offset);
|
|
|
|
extern guint32 tvb_get_letohl(tvbuff_t*, gint offset);
|
2004-08-22 00:31:58 +00:00
|
|
|
extern guint64 tvb_get_letoh64(tvbuff_t*, gint offset);
|
2002-04-24 21:53:05 +00:00
|
|
|
extern gfloat tvb_get_letohieee_float(tvbuff_t*, gint offset);
|
|
|
|
extern gdouble tvb_get_letohieee_double(tvbuff_t*, gint offset);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-09-10 19:43:41 +00:00
|
|
|
/**
|
|
|
|
* Fetch an IPv4 address, in network byte order.
|
|
|
|
* We do *not* convert it to host byte order; we leave it in
|
|
|
|
* network byte order, as that's what its callers expect. */
|
|
|
|
extern guint32 tvb_get_ipv4(tvbuff_t*, gint offset);
|
|
|
|
|
|
|
|
/* Fetch an IPv6 address. */
|
|
|
|
extern void tvb_get_ipv6(tvbuff_t*, gint offset, struct e_in6_addr *addr);
|
|
|
|
|
2006-03-10 11:58:22 +00:00
|
|
|
/* Fetch a GUID. */
|
|
|
|
extern void tvb_get_ntohguid(tvbuff_t *tvb, gint offset, e_guid_t *guid);
|
|
|
|
extern void tvb_get_letohguid(tvbuff_t *tvb, gint offset, e_guid_t *guid);
|
|
|
|
extern void tvb_get_guid(tvbuff_t *tvb, gint offset, e_guid_t *guid, gboolean little_endian);
|
|
|
|
|
2007-04-28 12:13:25 +00:00
|
|
|
/* Fetch a specified number of bits from bit offset in a tvb */
|
2007-05-18 16:46:35 +00:00
|
|
|
extern guint8 tvb_get_bits8(tvbuff_t *tvb, gint bit_offset, gint no_of_bits);
|
|
|
|
extern guint16 tvb_get_bits16(tvbuff_t *tvb, gint bit_offset, gint no_of_bits, gboolean little_endian);
|
|
|
|
extern guint32 tvb_get_bits32(tvbuff_t *tvb, gint bit_offset, gint no_of_bits, gboolean little_endian);
|
|
|
|
extern guint64 tvb_get_bits64(tvbuff_t *tvb, gint bit_offset, gint no_of_bits, gboolean little_endian);
|
2006-03-10 11:58:22 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Returns target for convenience. Does not suffer from possible
|
2000-05-11 08:18:09 +00:00
|
|
|
* expense of tvb_get_ptr(), since this routine is smart enough
|
|
|
|
* to copy data in chunks if the request range actually exists in
|
2000-08-17 17:16:02 +00:00
|
|
|
* different TVBUFF_REAL_DATA tvbuffs. This function assumes that the
|
|
|
|
* target memory is already allocated; it does not allocate or free the
|
|
|
|
* target memory. */
|
2007-04-24 11:54:18 +00:00
|
|
|
extern void* tvb_memcpy(tvbuff_t*, void* target, gint offset, gint length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** It is the user's responsibility to g_free() the memory allocated by
|
2000-05-11 08:18:09 +00:00
|
|
|
* tvb_memdup(). Calls tvb_memcpy() */
|
2007-04-28 21:06:15 +00:00
|
|
|
extern void* tvb_memdup(tvbuff_t*, gint offset, gint length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-07-26 18:32:12 +00:00
|
|
|
/* Same as above but the buffer returned from this function does not have to
|
|
|
|
* be freed. It will be automatically freed after the packet is dissected.
|
|
|
|
* Buffers allocated by this function are NOT persistent.
|
|
|
|
*/
|
2007-04-24 11:54:18 +00:00
|
|
|
extern void* ep_tvb_memdup(tvbuff_t *tvb, gint offset, gint length);
|
2005-07-26 18:32:12 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** WARNING! This function is possibly expensive, temporarily allocating
|
2000-05-11 08:18:09 +00:00
|
|
|
* another copy of the packet data. Furthermore, it's dangerous because once
|
|
|
|
* this pointer is given to the user, there's no guarantee that the user will
|
|
|
|
* honor the 'length' and not overstep the boundaries of the buffer.
|
|
|
|
*
|
2000-08-17 17:16:02 +00:00
|
|
|
* The returned pointer is data that is internal to the tvbuff, so do not
|
|
|
|
* attempt to free it. Don't modify the data, either, because another tvbuff
|
|
|
|
* that might be using this tvbuff may have already copied that portion of
|
|
|
|
* the data (sometimes tvbuff's need to make copies of data, but that's the
|
|
|
|
* internal implementation that you need not worry about). Assume that the
|
|
|
|
* guint8* points to read-only data that the tvbuff manages.
|
|
|
|
*
|
2000-05-11 08:18:09 +00:00
|
|
|
* Return a pointer into our buffer if the data asked for via 'offset'/'length'
|
|
|
|
* is contiguous (which might not be the case for TVBUFF_COMPOSITE). If the
|
|
|
|
* data is not contiguous, a tvb_memdup() is called for the entire buffer
|
|
|
|
* and the pointer to the newly-contiguous data is returned. This dynamically-
|
|
|
|
* allocated memory will be freed when the tvbuff is freed, after the
|
|
|
|
* tvbuff_free_cb_t() is called, if any. */
|
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 const guint8* tvb_get_ptr(tvbuff_t*, gint offset, gint length);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Find first occurence of any of the needles in tvbuff, starting at offset.
|
2000-11-10 09:15:57 +00:00
|
|
|
* Searches at most maxlength number of bytes; if maxlength is -1, searches
|
|
|
|
* to end of tvbuff.
|
|
|
|
* Returns the offset of the found needle, or -1 if not found.
|
|
|
|
* Will not throw an exception, even if maxlength exceeds boundary of tvbuff;
|
|
|
|
* in that case, -1 will be returned if the boundary is reached before
|
|
|
|
* finding needle. */
|
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 gint tvb_find_guint8(tvbuff_t*, gint offset, gint maxlength,
|
|
|
|
guint8 needle);
|
2000-08-30 02:50:18 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Find first occurence of any of the needles in tvbuff, starting at offset.
|
2000-11-10 06:50:37 +00:00
|
|
|
* Searches at most maxlength number of bytes. Returns the offset of the
|
|
|
|
* found needle, or -1 if not found. Will not throw an exception, even if
|
|
|
|
* maxlength exceeds boundary of tvbuff; in that case, -1 will be returned if
|
|
|
|
* the boundary is reached before finding needle. */
|
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 gint tvb_pbrk_guint8(tvbuff_t *, gint offset, gint maxlength,
|
2007-04-23 10:59:26 +00:00
|
|
|
const guint8 *needles);
|
2000-11-10 06:50:37 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Find size of stringz (NUL-terminated string) by looking for terminating
|
2000-12-25 23:48:16 +00:00
|
|
|
* NUL. The size of the string includes the terminating NUL.
|
|
|
|
*
|
|
|
|
* If the NUL isn't found, it throws the appropriate exception.
|
|
|
|
*/
|
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 guint tvb_strsize(tvbuff_t *tvb, gint offset);
|
2000-12-25 23:48:16 +00:00
|
|
|
|
2005-09-21 20:11:55 +00:00
|
|
|
/** Find length of string by looking for end of zero terminated string, up to
|
2000-11-10 09:15:57 +00:00
|
|
|
* 'maxlength' characters'; if 'maxlength' is -1, searches to end
|
|
|
|
* of tvbuff.
|
|
|
|
* Returns -1 if 'maxlength' reached before finding EOS. */
|
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 gint tvb_strnlen(tvbuff_t*, gint offset, guint maxlength);
|
2000-11-10 09:15:57 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Convert a string from Unicode to ASCII. At the moment we fake it by
|
2005-08-10 13:56:34 +00:00
|
|
|
* assuming all characters are ASCII )-: The len parameter is the number
|
|
|
|
* of guint16's to convert from Unicode.
|
|
|
|
*
|
|
|
|
* tvb_fake_unicode() returns a buffer allocated by g_malloc() and must
|
|
|
|
* be g_free() by the caller.
|
|
|
|
* tvb_get_ephemeral_faked_unicode() returns a buffer that does not need
|
|
|
|
* to be explicitely freed. Instead this buffer is
|
2006-05-21 05:12:17 +00:00
|
|
|
* automatically freed when wireshark starts dissecting
|
2005-08-10 13:56:34 +00:00
|
|
|
* the next packet.
|
|
|
|
*/
|
2003-02-24 01:22:30 +00:00
|
|
|
extern char *tvb_fake_unicode(tvbuff_t *tvb, int offset, int len,
|
|
|
|
gboolean little_endian);
|
2005-08-10 13:56:34 +00:00
|
|
|
extern char *tvb_get_ephemeral_faked_unicode(tvbuff_t *tvb, int offset, int len,
|
2005-07-28 08:55:11 +00:00
|
|
|
gboolean little_endian);
|
2003-02-24 01:22:30 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2000-11-10 09:15:57 +00:00
|
|
|
* Format the data in the tvb from offset for size ...
|
|
|
|
*/
|
2004-01-23 09:40:38 +00:00
|
|
|
extern gchar * tvb_format_text(tvbuff_t *tvb, gint offset, gint size);
|
2000-08-30 02:50:18 +00:00
|
|
|
|
2006-06-19 15:53:03 +00:00
|
|
|
/**
|
|
|
|
* Like "tvb_format_text()", but for 'wsp'; don't show
|
|
|
|
* the characters as C-style escapes.
|
|
|
|
*/
|
|
|
|
extern gchar * tvb_format_text_wsp(tvbuff_t *tvb, gint offset, gint size);
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2004-03-23 18:06:29 +00:00
|
|
|
* Like "tvb_format_text()", but for null-padded strings; don't show
|
|
|
|
* the null padding characters as "\000".
|
|
|
|
*/
|
|
|
|
extern gchar *tvb_format_stringzpad(tvbuff_t *tvb, gint offset, gint size);
|
|
|
|
|
2005-08-10 13:41:13 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
* Given a tvbuff, an offset, and a length, allocate a buffer big enough
|
|
|
|
* to hold a non-null-terminated string of that length at that offset,
|
2005-09-21 20:11:55 +00:00
|
|
|
* plus a trailing zero, copy the string into it, and return a pointer
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
* to the string.
|
|
|
|
*
|
|
|
|
* Throws an exception if the tvbuff ends before the string does.
|
2005-08-10 13:41:13 +00:00
|
|
|
*
|
|
|
|
* tvb_get_string() returns a string allocated by g_malloc() and therefore
|
|
|
|
* MUST be g_free() by the caller in order not to leak
|
|
|
|
* memory.
|
|
|
|
*
|
|
|
|
* tvb_get_ephemeral_string() returns a string that does not need to be freed,
|
|
|
|
* instead it will automatically be freed once the next
|
|
|
|
* packet is dissected.
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
*/
|
|
|
|
extern guint8 *tvb_get_string(tvbuff_t *tvb, gint offset, gint length);
|
2005-08-10 13:41:13 +00:00
|
|
|
extern guint8 *tvb_get_ephemeral_string(tvbuff_t *tvb, gint offset, gint length);
|
|
|
|
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
* Given a tvbuff and an offset, with the offset assumed to refer to
|
|
|
|
* a null-terminated string, find the length of that string (and throw
|
|
|
|
* an exception if the tvbuff ends before we find the null), allocate
|
|
|
|
* a buffer big enough to hold the string, copy the string into it,
|
|
|
|
* and return a pointer to the string. Also return the length of the
|
|
|
|
* string (including the terminating null) through a pointer.
|
2005-08-10 14:25:59 +00:00
|
|
|
*
|
|
|
|
* tvb_get_stringz() returns a string allocated by g_malloc() and therefore
|
|
|
|
* MUST be g_free() by the caller in order not to leak
|
|
|
|
* memory.
|
|
|
|
*
|
|
|
|
* tvb_get_ephemeral_stringz() returns a string that does not need to be freed,
|
|
|
|
* instead it will automatically be freed once the next
|
|
|
|
* packet is dissected.
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
*/
|
|
|
|
extern guint8 *tvb_get_stringz(tvbuff_t *tvb, gint offset, gint *lengthp);
|
2005-08-10 14:25:59 +00:00
|
|
|
extern guint8 *tvb_get_ephemeral_stringz(tvbuff_t *tvb, gint offset, gint *lengthp);
|
Add new routines:
tvb_get_string() - takes a tvbuff, an offset, and a length as
arguments, allocates a buffer big enough to hold a string with
the specified number of bytes plus an added null terminator
(i.e., length+1), copies the specified number of bytes from the
tvbuff, at the specified offset, to that buffer and puts in a
null terminator, and returns a pointer to that buffer (or throws
an exception before allocating the buffer if that many bytes
aren't available in the tvbuff);
tvb_get_stringz() - takes a tvbuff, an offset, and a pointer to
a "gint" as arguments, gets the size of the null-terminated
string starting at the specified offset in the tvbuff (throwing
an exception if the null terminator isn't found), allocates a
buffer big enough to hold that string, copies the string to that
buffer, and returns a pointer to that buffer and stores the
length of the string (including the terminating null) in the
variable pointed to by the "gint" pointer.
Replace many pieces of code allocating a buffer and copying a string
with calls to "tvb_get_string()" (for one thing, "tvb_get_string()"
doesn't require you to remember that the argument to
"tvb_get_nstringz0()" is the size of the buffer into which you're
copying the string, which might be the length of the string to be copied
*plus 1*).
Don't use fixed-length buffers for null-terminated strings (even if the
code that generates those packets has a #define to limit the length of
the string). Use "tvb_get_stringz()", instead.
In some cases where a value is fetched but is only used to pass an
argument to a "proto_tree_add_XXX" routine, use "proto_tree_add_item()"
instead.
svn path=/trunk/; revision=7859
2003-06-12 08:33:32 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Looks for a stringz (NUL-terminated string) in tvbuff and copies
|
2003-04-30 02:35:28 +00:00
|
|
|
* no more than bufsize number of bytes, including terminating NUL, to buffer.
|
2000-08-30 02:50:18 +00:00
|
|
|
* Returns length of string (not including terminating NUL), or -1 if the string was
|
|
|
|
* truncated in the buffer due to not having reached the terminating NUL.
|
2005-08-17 23:10:28 +00:00
|
|
|
* In this way, it acts like g_snprintf().
|
tvb_get_nstringz() needs to terminate a string with a NUL if the
end of the tvbuff is reached before the maximum_length passed by the
caller is reached and before a terminating NUL is found. In this case,
tvb_get_nstringz() returns a -1, but if the string is not artificially
terminated with a NUL by tvb_get_nstringz(), the
caller has no idea where the string should end because 1) the
return value "-1" gives the impression that the string ends
at the end of the buffer but 2) the string does
not end at the end of the buffer, but somewhere in the middle, due
to the packet being shorter than expected.
tvb_get_nstringz() and tvb_get_nstringz0() were both modified.
The FT_STRINGZ case in proto_tree_add_item() is made simpler.
During regression testing, when investigating a regression that I later
corrected, I discovered that strings added through proto_tree_add_item
(FT_STRING, FT_STRINGZ, and FT_UINT_STRING) leaked memory due to double
allocation of the string. The proto_tree_add_string*() functions do
not leak memory, since they only copy the string once. The memory
leak was fixed by adding another argument to the static function
proto_tree_set_string() to let the string ftype code know to g_strdup()
the string or not.
svn path=/trunk/; revision=4891
2002-03-06 19:17:06 +00:00
|
|
|
*
|
|
|
|
* When processing a packet where the remaining number of bytes is less
|
2003-04-30 02:35:28 +00:00
|
|
|
* than bufsize, an exception is not thrown if the end of the packet
|
tvb_get_nstringz() needs to terminate a string with a NUL if the
end of the tvbuff is reached before the maximum_length passed by the
caller is reached and before a terminating NUL is found. In this case,
tvb_get_nstringz() returns a -1, but if the string is not artificially
terminated with a NUL by tvb_get_nstringz(), the
caller has no idea where the string should end because 1) the
return value "-1" gives the impression that the string ends
at the end of the buffer but 2) the string does
not end at the end of the buffer, but somewhere in the middle, due
to the packet being shorter than expected.
tvb_get_nstringz() and tvb_get_nstringz0() were both modified.
The FT_STRINGZ case in proto_tree_add_item() is made simpler.
During regression testing, when investigating a regression that I later
corrected, I discovered that strings added through proto_tree_add_item
(FT_STRING, FT_STRINGZ, and FT_UINT_STRING) leaked memory due to double
allocation of the string. The proto_tree_add_string*() functions do
not leak memory, since they only copy the string once. The memory
leak was fixed by adding another argument to the static function
proto_tree_set_string() to let the string ftype code know to g_strdup()
the string or not.
svn path=/trunk/; revision=4891
2002-03-06 19:17:06 +00:00
|
|
|
* is reached before the NUL is found. If no NUL is found before reaching
|
|
|
|
* the end of the short packet, -1 is still returned, and the string
|
2003-04-30 02:35:28 +00:00
|
|
|
* is truncated with a NUL, albeit not at buffer[bufsize - 1], but
|
tvb_get_nstringz() needs to terminate a string with a NUL if the
end of the tvbuff is reached before the maximum_length passed by the
caller is reached and before a terminating NUL is found. In this case,
tvb_get_nstringz() returns a -1, but if the string is not artificially
terminated with a NUL by tvb_get_nstringz(), the
caller has no idea where the string should end because 1) the
return value "-1" gives the impression that the string ends
at the end of the buffer but 2) the string does
not end at the end of the buffer, but somewhere in the middle, due
to the packet being shorter than expected.
tvb_get_nstringz() and tvb_get_nstringz0() were both modified.
The FT_STRINGZ case in proto_tree_add_item() is made simpler.
During regression testing, when investigating a regression that I later
corrected, I discovered that strings added through proto_tree_add_item
(FT_STRING, FT_STRINGZ, and FT_UINT_STRING) leaked memory due to double
allocation of the string. The proto_tree_add_string*() functions do
not leak memory, since they only copy the string once. The memory
leak was fixed by adding another argument to the static function
proto_tree_set_string() to let the string ftype code know to g_strdup()
the string or not.
svn path=/trunk/; revision=4891
2002-03-06 19:17:06 +00:00
|
|
|
* at the correct spot, terminating the string.
|
2000-08-30 02:50:18 +00:00
|
|
|
*/
|
2003-04-30 02:35:28 +00:00
|
|
|
extern gint tvb_get_nstringz(tvbuff_t *tvb, gint offset, guint bufsize,
|
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
|
|
|
guint8* buffer);
|
2000-08-30 02:50:18 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/** Like tvb_get_nstringz(), but never returns -1. The string is guaranteed to
|
2000-08-30 02:50:18 +00:00
|
|
|
* have a terminating NUL. If the string was truncated when copied into buffer,
|
|
|
|
* a NUL is placed at the end of buffer to terminate it.
|
2003-05-19 03:23:12 +00:00
|
|
|
*
|
|
|
|
* bufsize MUST be greater than 0.
|
2000-08-30 02:50:18 +00:00
|
|
|
*/
|
2003-04-30 02:35:28 +00:00
|
|
|
extern gint tvb_get_nstringz0(tvbuff_t *tvb, gint offset, guint bufsize,
|
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
|
|
|
guint8* buffer);
|
2000-05-11 08:18:09 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2000-11-09 10:56:33 +00:00
|
|
|
* Given a tvbuff, an offset into the tvbuff, and a length that starts
|
|
|
|
* at that offset (which may be -1 for "all the way to the end of the
|
|
|
|
* tvbuff"), find the end of the (putative) line that starts at the
|
|
|
|
* specified offset in the tvbuff, going no further than the specified
|
|
|
|
* length.
|
|
|
|
*
|
2002-07-17 06:55:29 +00:00
|
|
|
* Return the length of the line (not counting the line terminator at
|
|
|
|
* the end), or, if we don't find a line terminator:
|
|
|
|
*
|
|
|
|
* if "deseg" is true, return -1;
|
|
|
|
*
|
|
|
|
* if "deseg" is false, return the amount of data remaining in
|
|
|
|
* the buffer.
|
|
|
|
*
|
|
|
|
* Set "*next_offset" to the offset of the character past the line
|
|
|
|
* terminator, or past the end of the buffer if we don't find a line
|
|
|
|
* terminator. (It's not set if we return -1.)
|
2000-11-09 10:56:33 +00:00
|
|
|
*/
|
2002-07-17 06:55:29 +00:00
|
|
|
extern gint tvb_find_line_end(tvbuff_t *tvb, gint offset, int len,
|
|
|
|
gint *next_offset, gboolean desegment);
|
2000-09-07 15:29:40 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2000-11-10 06:50:37 +00:00
|
|
|
* Given a tvbuff, an offset into the tvbuff, and a length that starts
|
|
|
|
* at that offset (which may be -1 for "all the way to the end of the
|
|
|
|
* tvbuff"), find the end of the (putative) line that starts at the
|
|
|
|
* specified offset in the tvbuff, going no further than the specified
|
|
|
|
* length.
|
|
|
|
*
|
|
|
|
* However, treat quoted strings inside the buffer specially - don't
|
|
|
|
* treat newlines in quoted strings as line terminators.
|
|
|
|
*
|
|
|
|
* Return the length of the line (not counting the line terminator at
|
|
|
|
* the end), or the amount of data remaining in the buffer if we don't
|
|
|
|
* find a line terminator.
|
|
|
|
*
|
|
|
|
* Set "*next_offset" to the offset of the character past the line
|
|
|
|
* terminator, or past the end of the buffer if we don't find a line
|
|
|
|
* terminator.
|
|
|
|
*/
|
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 gint tvb_find_line_end_unquoted(tvbuff_t *tvb, gint offset, int len,
|
2000-11-10 06:50:37 +00:00
|
|
|
gint *next_offset);
|
|
|
|
|
2007-12-09 17:41:16 +00:00
|
|
|
/**
|
|
|
|
* Copied from the mgcp dissector. (This function should be moved to /epan )
|
|
|
|
* tvb_skip_wsp - Returns the position in tvb of the first non-whitespace
|
|
|
|
* character following offset or offset + maxlength -1 whichever
|
|
|
|
* is smaller.
|
|
|
|
*
|
|
|
|
* Parameters:
|
|
|
|
* tvb - The tvbuff in which we are skipping whitespace.
|
|
|
|
* offset - The offset in tvb from which we begin trying to skip whitespace.
|
|
|
|
* maxlength - The maximum distance from offset that we may try to skip
|
|
|
|
* whitespace.
|
|
|
|
*
|
|
|
|
* Returns: The position in tvb of the first non-whitespace
|
|
|
|
* character following offset or offset + maxlength -1 whichever
|
|
|
|
* is smaller.
|
|
|
|
*/
|
|
|
|
|
|
|
|
extern gint tvb_skip_wsp(tvbuff_t* tvb, gint offset, gint maxlength);
|
|
|
|
|
|
|
|
extern gint tvb_skip_wsp_return(tvbuff_t* tvb, gint offset);
|
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2001-07-02 07:11:40 +00:00
|
|
|
* Call strncmp after checking if enough chars left, returning 0 if
|
|
|
|
* it returns 0 (meaning "equal") and -1 otherwise, otherwise return -1.
|
|
|
|
*/
|
2004-02-01 21:30:17 +00:00
|
|
|
extern gint tvb_strneql(tvbuff_t *tvb, gint offset, const gchar *str,
|
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
|
|
|
gint size);
|
2000-09-07 15:29:40 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
strcasecmp(), strncasecmp(), g_strcasecmp(), and g_strncasecmp() delenda
est. Use g_ascii_strcasecmp() and g_ascii_strncasecmp(), and supply our
own versions if they're missing from GLib (as is the case with GLib
1.x).
In the code to build the list of named fields for Diameter, don't use
g_strdown(); do our own g_ascii_-style upper-case to lower-case mapping
in the hash function and use g_ascii_strcasecmp() in the compare
function.
We do this because there is no guarantee that toupper(), tolower(), and
functions that use them will, for example, map between "I" and "i" in
all locales; in Turkish locales, for example, there are, in both
upper case and lower case, versions of "i" with and without a dot, and
the upper-case version of "i" is "I"-with-a-dot and the lower-case
version of "I" is "i"-without-a-dot. This causes strings that should
match not to match.
This finishes fixing bug 2010 - an earlier checkin prevented the crash
(as there are other ways to produce the same crash, e.g. a bogus
dictionary.xml file), but didn't fix the case-insensitive string matching.
svn path=/trunk/; revision=23623
2007-11-27 18:52:51 +00:00
|
|
|
* Call g_ascii_strncasecmp after checking if enough chars left, returning
|
|
|
|
* 0 if it returns 0 (meaning "equal") and -1 otherwise, otherwise return -1.
|
2001-07-02 07:11:40 +00:00
|
|
|
*/
|
2004-02-01 06:49:25 +00:00
|
|
|
extern gint tvb_strncaseeql(tvbuff_t *tvb, gint offset, const gchar *str,
|
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
|
|
|
gint size);
|
2000-11-09 10:56:33 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2001-07-02 07:11:40 +00:00
|
|
|
* Call memcmp after checking if enough chars left, returning 0 if
|
|
|
|
* it returns 0 (meaning "equal") and -1 otherwise, otherwise return -1.
|
|
|
|
*/
|
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 gint tvb_memeql(tvbuff_t *tvb, gint offset, const guint8 *str,
|
|
|
|
gint size);
|
2001-07-02 07:11:40 +00:00
|
|
|
|
2005-01-07 12:00:01 +00:00
|
|
|
/**
|
2004-12-30 23:47:52 +00:00
|
|
|
* Format a bunch of data from a tvbuff as bytes, returning a pointer
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* to the string with the formatted data, with "punct" as a byte
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* separator.
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*/
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extern gchar *tvb_bytes_to_str_punct(tvbuff_t *tvb, gint offset, gint len,
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gchar punct);
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2000-11-13 07:19:37 +00:00
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/*
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* Format a bunch of data from a tvbuff as bytes, returning a pointer
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* to the string with the formatted data.
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*/
|
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
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extern gchar *tvb_bytes_to_str(tvbuff_t *tvb, gint offset, gint len);
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2000-11-13 07:19:37 +00:00
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2003-12-02 10:23:18 +00:00
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#define TVB_GET_DS_TVB(tvb) \
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(tvb->ds_tvb)
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2001-03-23 14:44:04 +00:00
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2005-01-07 12:00:01 +00:00
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/** Locate a sub-tvbuff within another tvbuff, starting at position
|
2003-08-27 15:23:11 +00:00
|
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* 'haystack_offset'. Returns the index of the beginning of 'needle' within
|
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* 'haystack', or -1 if 'needle' is not found. The index is relative
|
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* to the start of 'haystack', not 'haystack_offset'. */
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extern gint tvb_find_tvb(tvbuff_t *haystack_tvb, tvbuff_t *needle_tvb,
|
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gint haystack_offset);
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2005-01-07 12:00:01 +00:00
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/**
|
2004-05-05 06:55:09 +00:00
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* Uncompresses a zlib compressed packet inside a tvbuff at offset with
|
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|
* length comprlen. Returns an uncompressed tvbuffer if uncompression
|
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|
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* succeeded or NULL if uncompression failed.
|
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*/
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extern tvbuff_t* tvb_uncompress(tvbuff_t *tvb, int offset, int comprlen);
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2000-05-11 08:18:09 +00:00
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/************** END OF ACCESSORS ****************/
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#endif /* __TVBUFF_H__ */
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