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/* decode_as.c
* Routines for dissector Decode As handlers
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*
* 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.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <glib.h>
#include "decode_as.h"
#include "packet.h"
#include <stdio.h>
#include <stdlib.h>
GList *decode_as_list = NULL;
void register_decode_as(decode_as_t* reg)
{
dissector_table_t decode_table;
/* Ensure valid functions */
DISSECTOR_ASSERT(reg->populate_list);
DISSECTOR_ASSERT(reg->reset_value);
DISSECTOR_ASSERT(reg->change_value);
/* Ensure the dissector table can't have duplicate protocols
that could confuse users */
decode_table = find_dissector_table(reg->table_name);
/* XXX - This should really be a DISSECTOR_ASSERT but a Bluetooth
* dissector is registering for "media_type" dissector table before it
* can be created
* There is also the "fake" DCE/RPC dissector table that needs to be fixed
*/
if (decode_table != NULL)
{
/* FT_STRING can at least show the string value in the dialog, so don't penalize them */
if ((dissector_table_get_type(decode_table) != FT_STRING) &&
(dissector_table_get_proto_allowed(decode_table) != DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE))
{
fprintf(stderr, "%s allows duplicates, which can lead to confuse in the Decode As dialog\n", reg->table_name);
if (getenv("WIRESHARK_ABORT_ON_DISSECTOR_BUG") != NULL)
abort();
}
}
decode_as_list = g_list_append(decode_as_list, reg);
}
struct decode_as_default_populate
{
decode_as_add_to_list_func add_to_list;
gpointer ui_element;
};
static void
decode_proto_add_to_list (const gchar *table_name, gpointer value, gpointer user_data)
{
struct decode_as_default_populate* populate = (struct decode_as_default_populate*)user_data;
const gchar *proto_name;
gint i;
dissector_handle_t handle;
handle = (dissector_handle_t)value;
proto_name = dissector_handle_get_short_name(handle);
i = dissector_handle_get_protocol_index(handle);
if (i >= 0 && !proto_is_protocol_enabled(find_protocol_by_id(i)))
return;
populate->add_to_list(table_name, proto_name, value, populate->ui_element);
}
void decode_as_default_populate_list(const gchar *table_name, decode_as_add_to_list_func add_to_list, gpointer ui_element)
{
struct decode_as_default_populate populate;
populate.add_to_list = add_to_list;
populate.ui_element = ui_element;
dissector_table_foreach_handle(table_name, decode_proto_add_to_list, &populate);
}
gboolean decode_as_default_reset(const char *name, const gpointer pattern)
{
switch (get_dissector_table_selector_type(name)) {
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
dissector_reset_uint(name, GPOINTER_TO_UINT(pattern));
return TRUE;
case FT_STRING:
case FT_STRINGZ:
case FT_UINT_STRING:
case FT_STRINGZPAD:
dissector_reset_string(name, (!pattern)?"":(gchar *) pattern);
return TRUE;
default:
return FALSE;
};
return TRUE;
}
gboolean decode_as_default_change(const char *name, const gpointer pattern, gpointer handle, gchar* list_name _U_)
{
dissector_handle_t* dissector = (dissector_handle_t*)handle;
if (dissector != NULL) {
switch (get_dissector_table_selector_type(name)) {
case FT_UINT8:
case FT_UINT16:
case FT_UINT24:
case FT_UINT32:
dissector_change_uint(name, GPOINTER_TO_UINT(pattern), *dissector);
return TRUE;
case FT_STRING:
case FT_STRINGZ:
case FT_UINT_STRING:
case FT_STRINGZPAD:
dissector_change_string(name, (!pattern)?"":(gchar *) pattern, *dissector);
return TRUE;
default:
return FALSE;
};
return FALSE;
}
return TRUE;
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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