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/*
* (C) 2012 by Holger Hans Peter Freyther
* (C) 2012 by On-Waves
* All Rights Reserved
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <isup_filter.h>
#include <isup_types.h>
#include <mgcp_callagent.h>
#include <ss7_application.h>
#include <bsc_data.h>
#include <cellmgr_debug.h>
#include <osmocom/core/msgb.h>
#include <stdio.h>
#include <string.h>
static void send_reset(struct ss7_application *app, int endp, int range)
{
char buf[1024];
snprintf(buf, sizeof(buf) - 1,
"RSIP 2 %s/%d@127.0.0.1 MGCP 1.0\r\n"
"R: %d\n", app->trunk_name, endp, range);
buf[sizeof(buf) - 1] = '\0';
mgcp_forward(&app->bsc->mgcp_agent,
(const uint8_t *) buf, strlen(buf));
}
static void reset_cic(struct ss7_application *app, int cic)
{
return send_reset(app, cic, 1);
}
static void reset_cics(struct ss7_application *app, int cic, int range)
{
return send_reset(app, cic, range);
}
/**
* Discover resets and forward them to the local MGCP gateway
*/
int isup_scan_for_reset(struct ss7_application *app, struct msgb *msg)
{
struct isup_msg_hdr *hdr;
int range;
/* too small for an isup message? */
if (msgb_l3len(msg) < sizeof(*hdr)) {
LOGP(DISUP, LOGL_ERROR, "Message too small for the header\n");
return -1;
}
/* no trunk name, don't bother forwarding */
if (!app->trunk_name) {
LOGP(DISUP, LOGL_DEBUG,
"No trunk name defined for: %s\n", app->name);
return 0;
}
hdr = (struct isup_msg_hdr *) msg->l3h;
switch (hdr->msg_type) {
case ISUP_MSG_GRS:
range = isup_parse_status(&hdr->data[0],
msgb_l3len(msg) - sizeof(*hdr));
if (range <= 0) {
LOGP(DISUP, LOGL_ERROR,
"Failed to parse range on app %s\n", app->name);
return -1;
}
LOGP(DISUP, LOGL_DEBUG,
"Going to reset ISUP for app %s, cic %d range %d\n",
app->name, hdr->cic, range);
reset_cics(app, hdr->cic, range);
break;
case ISUP_MSG_RSC:
LOGP(DISUP, LOGL_DEBUG,
"Going to reset single CIC %d on app %s\n",
hdr->cic, app->name);
reset_cic(app, hdr->cic);
break;
}
return 0;
}
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