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/* Radio Resource LCS (Location) Protocol, GMS TS 04.31 */
/* (C) 2009 by Harald Welte <laforge@gnumonks.org>
*
* 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 <stdint.h>
#include <osmocom/core/utils.h>
#include <osmocom/msc/gsm_04_08.h>
#include <osmocom/msc/signal.h>
#include <osmocom/msc/debug.h>
#include <osmocom/msc/gsm_subscriber.h>
#include <osmocom/msc/ran_conn.h>
/* RRLP msPositionReq, nsBased,
* Accuracy=60, Method=gps, ResponseTime=2, oneSet */
static const uint8_t ms_based_pos_req[] = { 0x40, 0x01, 0x78, 0xa8 };
/* RRLP msPositionReq, msBasedPref,
Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
static const uint8_t ms_pref_pos_req[] = { 0x40, 0x02, 0x79, 0x50 };
/* RRLP msPositionReq, msAssistedPref,
Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
static const uint8_t ass_pref_pos_req[] = { 0x40, 0x03, 0x79, 0x50 };
static const struct value_string rrlp_mode_names[] = {
{ RRLP_MODE_NONE, "none" },
{ RRLP_MODE_MS_BASED, "ms-based" },
{ RRLP_MODE_MS_PREF, "ms-preferred" },
{ RRLP_MODE_ASS_PREF, "ass-preferred" },
{ 0, NULL }
};
enum rrlp_mode msc_rrlp_mode_parse(const char *arg)
{
return get_string_value(rrlp_mode_names, arg);
}
const char *msc_rrlp_mode_name(enum rrlp_mode mode)
{
return get_value_string(rrlp_mode_names, mode);
}
static int send_rrlp_req(struct ran_conn *conn)
{
struct gsm_network *net = conn->network;
const uint8_t *req;
switch (net->rrlp.mode) {
case RRLP_MODE_MS_BASED:
req = ms_based_pos_req;
break;
case RRLP_MODE_MS_PREF:
req = ms_pref_pos_req;
break;
case RRLP_MODE_ASS_PREF:
req = ass_pref_pos_req;
break;
case RRLP_MODE_NONE:
default:
return 0;
}
LOGP(DRR, LOGL_INFO, "Sending '%s' RRLP position request\n",
msc_rrlp_mode_name(net->rrlp.mode));
return gsm48_send_rr_app_info(conn, 0x00,
sizeof(ms_based_pos_req), req);
}
static int subscr_sig_cb(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
struct vlr_subscr *vsub;
struct ran_conn *conn;
switch (signal) {
case S_SUBSCR_ATTACHED:
/* A subscriber has attached. */
vsub = signal_data;
conn = connection_for_subscr(vsub);
if (!conn)
break;
send_rrlp_req(conn);
break;
}
return 0;
}
static int paging_sig_cb(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
struct paging_signal_data *psig_data = signal_data;
switch (signal) {
case S_PAGING_SUCCEEDED:
/* A subscriber has attached. */
send_rrlp_req(psig_data->conn);
break;
case S_PAGING_EXPIRED:
break;
}
return 0;
}
void msc_rrlp_init(void)
{
osmo_signal_register_handler(SS_SUBSCR, subscr_sig_cb, NULL);
osmo_signal_register_handler(SS_PAGING, paging_sig_cb, NULL);
}
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