![Guy Harris](/assets/img/avatar_default.png)
match what "register_tap_listener()" expects (rather than squelching warnings about the differences by casting function pointers to "void *"). Make static some functions not used outside the module in which they're defined. svn path=/trunk/; revision=12913
424 lines
13 KiB
C
424 lines
13 KiB
C
/* h323_conversations.c
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* H323 conversations summary addition for ethereal
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*
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* $Id$
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*
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* Copyright 2004, Iskratel, Ltd, Kranj
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* By Miha Jemec <m.jemec@iskratel.si>
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*
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* based on rtp_stream.c
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* Copyright 2003, Alcatel Business Systems
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* By Lars Ruoff <lars.ruoff@gmx.net>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "h323_conversations.h"
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#include "h323_conversations_dlg.h"
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#include "globals.h"
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#include <epan/tap.h>
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#include <epan/dissectors/packet-h225.h>
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#include <epan/dissectors/packet-h245.h>
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#include "alert_box.h"
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#include "simple_dialog.h"
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <string.h>
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static void h245conversations_reset(void *arg);
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char *transport_prot_name[256] ={
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"","","","","","","tcp","","","", /* 0 to 10 */
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"","","","","","","","udp","","", /* 10 to 20 */
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"","","","","","","","","","", /* 20 to 30 */
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"","","","","","","","","","", /* 30 to 40 */
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"","","","","","","","","","", /* 40 to 50 */
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"","","","","","","","","","", /* 50 to 60 */
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"","","","","","","","","","", /* 60 to 70 */
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"","","","","","","","","","", /* 70 to 80 */
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"","","","","","","","","","", /* 80 to 90 */
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"","","","","","","","","","", /* 90 to 100 */
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"","","","","","","","","","", /* 100 to 110 */
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"","","","","","","","","","", /* 110 to 120 */
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"","","","","","","","","","", /* 120 to 130 */
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"","","sctp","","","","","","","", /* 130 to 140 */
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"","","","","","","","","","", /* 140 to 150 */
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"","","","","","","","","","", /* 150 to 160 */
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"","","","","","","","","","", /* 160 to 170 */
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"","","","","","","","","","", /* 170 to 180 */
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"","","","","","","","","","", /* 180 to 190 */
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"","","","","","","","","","", /* 190 to 200 */
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"","","","","","","","","","", /* 200 to 210 */
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"","","","","","","","","","", /* 210 to 220 */
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"","","","","","","","","","", /* 220 to 230 */
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"","","","","","","","","","", /* 230 to 240 */
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"","","","","","","","","","", /* 240 to 250 */
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"","","","","","" /* 250 to 255 */
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};
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/****************************************************************************/
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/* the one and only global h323conversations_tapinfo_t structure */
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static h323conversations_tapinfo_t the_tapinfo_struct =
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{0, NULL, 0, NULL, 0, 0, 0, 0};
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/****************************************************************************/
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/* GCompareFunc style comparison function for _h323_conversations_info */
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gint h323_conversations_info_cmp(gconstpointer aa, gconstpointer bb)
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{
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const struct _h323_conversations_info* a = aa;
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const struct _h323_conversations_info* b = bb;
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if (a==b)
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return 0;
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if (a==NULL || b==NULL)
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return 1;
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if ((a->src_addr == b->src_addr)
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&& (a->src_port == b->src_port)
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&& (a->dest_addr == b->dest_addr)
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&& (a->dest_port == b->dest_port)
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&& (a->transport == b->transport)
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)
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return 0;
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else if ((a->src_addr == b->dest_addr)
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&& (a->src_port == b->dest_port)
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&& (a->dest_addr == b->src_addr)
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&& (a->dest_port == b->src_port)
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&& (a->transport == b->transport)
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)
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return 0;
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else
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return 1;
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}
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/****************************************************************************/
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/* when there is a [re]reading of packet's */
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void h225conversations_reset(h323conversations_tapinfo_t *tapinfo)
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{
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GList* list;
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/* free the data items first */
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list = g_list_first(tapinfo->strinfo_list);
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while (list)
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{
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g_free(list->data);
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list = g_list_next(list);
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}
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g_list_free(tapinfo->strinfo_list);
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tapinfo->strinfo_list = NULL;
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tapinfo->nconversationss = 0;
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tapinfo->npackets = 0;
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tapinfo->setup_packets = 0;
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tapinfo->completed_calls = 0;
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tapinfo->rejected_calls = 0;
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++(tapinfo->launch_count);
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return;
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}
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static void h225conversations_reset_cb(void *arg)
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{
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h225conversations_reset(arg);
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}
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/****************************************************************************/
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/* redraw the output */
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static void h225conversations_draw(void *arg _U_)
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{
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/* XXX: see h323conversations_on_update in h323_conversations_dlg.c for comments
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gtk_signal_emit_by_name(top_level, "signal_h225conversations_update");
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*/
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h323conversations_dlg_update(the_tapinfo_struct.strinfo_list);
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return;
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}
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/****************************************************************************/
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/* whenever a H225 packet is seen by the tap listener */
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static int h225conversations_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *h225info)
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{
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h323conversations_tapinfo_t *tapinfo = arg;
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h323_conversations_info_t tmp_strinfo;
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h323_conversations_info_t *strinfo = NULL;
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GList* list;
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const h225_packet_info *pi = h225info;
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/* TODO: evaluate RAS Messages. Just ignore them for now*/
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if(pi->msg_type==H225_RAS)
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return 0;
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/* gather infos on the conversations this packet is part of */
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g_memmove(&(tmp_strinfo.src_addr), pinfo->src.data, 4);
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tmp_strinfo.src_port = pinfo->srcport;
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g_memmove(&(tmp_strinfo.dest_addr), pinfo->dst.data, 4);
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tmp_strinfo.dest_port = pinfo->destport;
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tmp_strinfo.transport = pinfo->ipproto;
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/* check wether we already have a conversations with these parameters in the list */
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list = g_list_first(tapinfo->strinfo_list);
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while (list)
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{
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if (h323_conversations_info_cmp(&tmp_strinfo, (h323_conversations_info_t*)(list->data))==0)
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{
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strinfo = (h323_conversations_info_t*)(list->data); /*found!*/
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break;
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}
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list = g_list_next(list);
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}
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/* not in the list? then create a new entry */
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if (!strinfo) {
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tmp_strinfo.call_state = UNKNOWN;
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tmp_strinfo.npackets = 0;
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tmp_strinfo.h245packets = 0;
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tmp_strinfo.first_frame_num = pinfo->fd->num;
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tmp_strinfo.faststart = pi->is_faststart;
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tmp_strinfo.is_h245 = pi->is_h245;
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tmp_strinfo.h245address = pi->h245_address;
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tmp_strinfo.h245port = pi->h245_port;
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strinfo = g_malloc(sizeof(h323_conversations_info_t));
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*strinfo = tmp_strinfo; /* memberwise copy of struct */
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tapinfo->strinfo_list = g_list_append(tapinfo->strinfo_list, strinfo);
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}
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/* ok, there is an entry, but is it also an entry for h.245 address.
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* h.245 address can be provided in connect message, but entry for this conversation
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* already exists at this point */
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else if (pi->is_h245) {
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strinfo->is_h245 = pi->is_h245;
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strinfo->h245address = pi->h245_address;
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strinfo->h245port = pi->h245_port;
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}
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/* we check the faststart again in the connect message, if there is no
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* faststart field in connect message, we asume, there is no faststart */
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if ((pi->cs_type == H225_CONNECT) && (pi->is_faststart == 0))
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strinfo->faststart = 0;
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/* in the list or not in the list, we want the status */
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/* we have four states: CALL SETUP, IN_CALL, COMPLETED, REJECTED
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* CALL_SETUP: if the setup, call proceding, alerting,
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* IN_CALL: connect
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* COMPLETED: release complete after connect
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* REJECTED: release complete without connect
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*/
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switch (pi->cs_type) {
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case H225_SETUP:
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strinfo->call_state = CALL_SETUP;
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++(tapinfo->setup_packets);
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break;
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case H225_CALL_PROCEDING:
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strinfo->call_state = CALL_SETUP;
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break;
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case H225_ALERTING:
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strinfo->call_state = CALL_SETUP;
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break;
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case H225_CONNECT:
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strinfo->call_state = IN_CALL;
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break;
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case H225_RELEASE_COMPLET:
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if (strinfo->call_state == IN_CALL) {
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strinfo->call_state = COMPLETED;
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++(tapinfo->completed_calls);
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}
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else if (strinfo->call_state == CALL_SETUP) {
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strinfo->call_state = REJECTED;
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++(tapinfo->rejected_calls);
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}
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else if (strinfo->call_state == COMPLETED)
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strinfo->call_state = COMPLETED;
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else if (strinfo->call_state == REJECTED)
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strinfo->call_state = REJECTED;
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else
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strinfo->call_state = UNKNOWN;
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case H225_OTHER:
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;
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}
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/* increment the packets counter for this conversations */
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++(strinfo->npackets);
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/* increment the packets counter of all conversationss */
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++(tapinfo->npackets);
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return 1; /* refresh output */
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}
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/****************************************************************************/
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const h323conversations_tapinfo_t* h323conversations_get_info(void)
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{
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return &the_tapinfo_struct;
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}
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/****************************************************************************/
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/* TAP INTERFACE */
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/****************************************************************************/
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static gboolean have_h225_tap_listener=FALSE;
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/****************************************************************************/
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void
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h225conversations_init_tap(void)
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{
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GString *error_string;
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h225conversations_reset(&the_tapinfo_struct);
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if(have_h225_tap_listener==FALSE)
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{
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/* don't register tap listener, if we have it already */
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error_string = register_tap_listener("h225", &the_tapinfo_struct, NULL,
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h225conversations_reset_cb, h225conversations_packet,
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h225conversations_draw);
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if (error_string != NULL) {
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simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
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error_string->str);
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g_string_free(error_string, TRUE);
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exit(1);
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}
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have_h225_tap_listener=TRUE;
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}
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}
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/* XXX just copied from gtk/rpc_stat.c */
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void protect_thread_critical_region(void);
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void unprotect_thread_critical_region(void);
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/****************************************************************************/
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void
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remove_tap_listener_h225_conversations(void)
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{
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protect_thread_critical_region();
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remove_tap_listener(&the_tapinfo_struct);
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unprotect_thread_critical_region();
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have_h225_tap_listener=FALSE;
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}
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/****************************************************************************/
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/* ***************************TAP for h245 **********************************/
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/****************************************************************************/
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/****************************************************************************/
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static void h245conversations_reset(void *arg _U_)
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{
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return;
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}
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/****************************************************************************/
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/* redraw the output */
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static void h245conversations_draw(void *arg _U_)
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{
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h323conversations_dlg_update(the_tapinfo_struct.strinfo_list);
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return;
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}
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/****************************************************************************/
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/* whenever a H245 packet is seen by the tap listener */
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static int h245conversations_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *h245info _U_)
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{
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h323conversations_tapinfo_t *tapinfo = arg;
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GList* list;
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struct _h323_conversations_info* a;
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guint32 src, dst;
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guint16 srcp, dstp;
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guint16 p_transport;
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/* check wether this packet is a part of any H323 conversation in the list*/
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list = g_list_first(tapinfo->strinfo_list);
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while (list)
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{
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a = (h323_conversations_info_t*)(list->data);
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g_memmove(&src, pinfo->src.data, 4);
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g_memmove(&dst, pinfo->dst.data, 4);
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/* src = *(pinfo->src.data); */
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/* dst = *(pinfo->dst.data); */
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srcp = pinfo->srcport;
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dstp = pinfo->destport;
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p_transport = pinfo->ipproto;
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if ( ((a->h245address == src) && (a->h245port == srcp) && (a->transport == p_transport)) ||
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( (a->h245address == dst) && (a->h245port == dstp) && (a->transport == p_transport)) ) {
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/* in the list? increment packet number */
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++(a->h245packets);
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break;
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}
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list = g_list_next(list);
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}
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return 1; /* refresh output */
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}
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/****************************************************************************/
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static gboolean have_h245_tap_listener=FALSE;
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void
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h245conversations_init_tap(void)
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{
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GString *error_string;
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if(have_h245_tap_listener==FALSE)
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{
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/* don't register tap listener, if we have it already */
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error_string = register_tap_listener("h245", &the_tapinfo_struct,
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NULL, h245conversations_reset, h245conversations_packet,
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h245conversations_draw);
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if (error_string != NULL) {
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simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
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error_string->str);
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g_string_free(error_string, TRUE);
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exit(1);
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}
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have_h245_tap_listener=TRUE;
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}
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}
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/****************************************************************************/
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void
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remove_tap_listener_h245_conversations(void)
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{
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protect_thread_critical_region();
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remove_tap_listener(&the_tapinfo_struct);
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unprotect_thread_critical_region();
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have_h245_tap_listener=FALSE;
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}
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