108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/*
|
|
* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
|
|
* (C) 2010 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 <openbsc/osmo_bsc_grace.h>
|
|
#include <openbsc/osmo_bsc_rf.h>
|
|
#include <openbsc/osmo_msc_data.h>
|
|
#include <openbsc/gsm_04_80.h>
|
|
#include <openbsc/signal.h>
|
|
|
|
int bsc_grace_allow_new_connection(struct gsm_network *network)
|
|
{
|
|
if (!network->msc_data->rf_ctl)
|
|
return 1;
|
|
return network->msc_data->rf_ctl->policy == S_RF_ON;
|
|
}
|
|
|
|
static int handle_sub(struct gsm_lchan *lchan, const char *text)
|
|
{
|
|
struct gsm_subscriber_connection *conn;
|
|
|
|
/* only send it to TCH */
|
|
if (lchan->type != GSM_LCHAN_TCH_H && lchan->type != GSM_LCHAN_TCH_F)
|
|
return -1;
|
|
|
|
/* only send on the primary channel */
|
|
conn = lchan->conn;
|
|
if (!conn)
|
|
return -1;
|
|
|
|
if (conn->lchan != lchan)
|
|
return -1;
|
|
|
|
/* only when active */
|
|
if (lchan->state != LCHAN_S_ACTIVE)
|
|
return -1;
|
|
|
|
gsm0480_send_ussdNotify(conn, 0, text);
|
|
gsm0480_send_releaseComplete(conn);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The place to handle the grace mode. Right now we will send
|
|
* USSD messages to the subscriber, in the future we might start
|
|
* a timer to have different modes for the grace period.
|
|
*/
|
|
static int handle_grace(struct gsm_network *network)
|
|
{
|
|
int ts_nr, lchan_nr;
|
|
struct gsm_bts *bts;
|
|
struct gsm_bts_trx *trx;
|
|
|
|
if (!network->msc_data->mid_call_txt)
|
|
return 0;
|
|
|
|
llist_for_each_entry(bts, &network->bts_list, list) {
|
|
llist_for_each_entry(trx, &bts->trx_list, list) {
|
|
for (ts_nr = 0; ts_nr < TRX_NR_TS; ++ts_nr) {
|
|
struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr];
|
|
for (lchan_nr = 0; lchan_nr < TS_MAX_LCHAN; ++lchan_nr) {
|
|
handle_sub(&ts->lchan[lchan_nr],
|
|
network->msc_data->mid_call_txt);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int handle_rf_signal(unsigned int subsys, unsigned int signal,
|
|
void *handler_data, void *signal_data)
|
|
{
|
|
struct rf_signal_data *sig;
|
|
|
|
if (subsys != SS_RF)
|
|
return -1;
|
|
|
|
sig = signal_data;
|
|
|
|
if (signal == S_RF_GRACE)
|
|
handle_grace(sig->net);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __attribute__((constructor)) void on_dso_load_grace(void)
|
|
{
|
|
register_signal_handler(SS_RF, handle_rf_signal, NULL);
|
|
}
|