2 * Routines for packet disassembly
4 * $Id: frame_data.c,v 1.1 2001/04/01 04:11:50 hagbard Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@zing.org>
8 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 #ifdef HAVE_SYS_TYPES_H
31 # include <sys/types.h>
34 #include "frame_data.h"
39 /* Protocol-specific data attached to a frame_data structure - protocol
40 index and opaque pointer. */
41 typedef struct _frame_proto_data {
46 static GMemChunk *frame_proto_data_area = NULL;
49 * Free up any space allocated for frame proto data areas and then
50 * allocate a new area.
52 * We can free the area, as the structures it contains are pointed to by
53 * frames, that will be freed as well.
56 packet_init_protocol(void)
59 if (frame_proto_data_area)
60 g_mem_chunk_destroy(frame_proto_data_area);
62 frame_proto_data_area = g_mem_chunk_new("frame_proto_data_area",
63 sizeof(frame_proto_data),
64 20 * sizeof(frame_proto_data), /* FIXME*/
72 register_init_routine(&packet_init_protocol);
76 frame_data_cleanup(void)
78 /* this function intentionally left blank :) */
81 /* XXX - I declared this static, because it only seems to be used by
82 * p_get_proto_data and p_add_proto_data
84 static gint p_compare(gconstpointer a, gconstpointer b)
87 if (((frame_proto_data *)a) -> proto > ((frame_proto_data *)b) -> proto)
89 else if (((frame_proto_data *)a) -> proto == ((frame_proto_data *)b) -> proto)
98 p_add_proto_data(frame_data *fd, int proto, void *proto_data)
100 frame_proto_data *p1 = g_mem_chunk_alloc(frame_proto_data_area);
102 g_assert(p1 != NULL);
105 p1 -> proto_data = proto_data;
107 /* Add it to the GSLIST */
109 fd -> pfd = g_slist_insert_sorted(fd -> pfd,
116 p_get_proto_data(frame_data *fd, int proto)
118 frame_proto_data temp, *p1;
122 temp.proto_data = NULL;
124 item = g_slist_find_custom(fd->pfd, (gpointer *)&temp, p_compare);
127 p1 = (frame_proto_data *)item->data;
128 return p1->proto_data;
136 p_rem_proto_data(frame_data *fd, int proto)
138 frame_proto_data temp;
142 temp.proto_data = NULL;
144 item = g_slist_find_custom(fd->pfd, (gpointer *)&temp, p_compare);
148 fd->pfd = g_slist_remove(fd->pfd, item);