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/* tpg.c
* helper functions for TPG
*
* (c) 2005, Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
*
* $Id$
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "tpg.h"
#include <epan/emem.h>
#include <epan/packet.h>
extern guint32 tpg_ipv4(tvbparse_elem_t* e _U_) {
/* XXX TO DO */
return 0;
}
extern guint8* tpg_ipv6(tvbparse_elem_t* e _U_) {
/* XXX TO DO */
return NULL;
}
extern tpg_parser_data_t* tpg_start(proto_tree* root_tree,
tvbuff_t* tvb,
int offset,
int len,
void* private_data) {
tpg_parser_data_t* tpg = ep_alloc(sizeof(tpg_parser_data_t));
tpg->private_data = private_data;
tpg->tt = tvbparse_init(tvb,offset,len,tpg,NULL);
tpg->stack = ep_alloc(sizeof(tpg_stack_frame_t));
tpg->stack->tree = root_tree;
tpg->stack->down = NULL;
return tpg;
}
extern void tpg_push(tpg_parser_data_t* tpg, proto_item* item, gint ett) {
tpg_stack_frame_t* frame = ep_alloc(sizeof(tpg_stack_frame_t));
frame->tree = proto_item_add_subtree(item,ett);
frame->down = tpg->stack;
tpg->stack = frame;
}
tpg_stack_frame_t* tpg_pop(tpg_parser_data_t* tpg) {
tpg_stack_frame_t* frame = tpg->stack;
if (tpg->stack->down) {
tpg->stack = tpg->stack->down;
} else {
DISSECTOR_ASSERT( FALSE && "Error in the TPG infrastructure: trying to pop the end of the stack");
}
return frame;
}
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