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-rw-r--r--src/libmsc/rrlp.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/src/libmsc/rrlp.c b/src/libmsc/rrlp.c
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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 <sys/types.h>
+
+#include <openbsc/gsm_04_08.h>
+#include <openbsc/signal.h>
+#include <openbsc/gsm_subscriber.h>
+#include <openbsc/chan_alloc.h>
+
+/* RRLP msPositionReq, nsBased,
+ * Accuracy=60, Method=gps, ResponseTime=2, oneSet */
+static const u_int8_t ms_based_pos_req[] = { 0x40, 0x01, 0x78, 0xa8 };
+
+/* RRLP msPositionReq, msBasedPref,
+ Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
+static const u_int8_t ms_pref_pos_req[] = { 0x40, 0x02, 0x79, 0x50 };
+
+/* RRLP msPositionReq, msAssistedPref,
+ Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
+static const u_int8_t ass_pref_pos_req[] = { 0x40, 0x03, 0x79, 0x50 };
+
+static int send_rrlp_req(struct gsm_subscriber_connection *conn)
+{
+ struct gsm_network *net = conn->bts->network;
+ const u_int8_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;
+ }
+
+ 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 gsm_subscriber *subscr;
+ struct gsm_subscriber_connection *conn;
+
+ switch (signal) {
+ case S_SUBSCR_ATTACHED:
+ /* A subscriber has attached. */
+ subscr = signal_data;
+ conn = connection_for_subscr(subscr);
+ 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 on_dso_load_rrlp(void)
+{
+ register_signal_handler(SS_SUBSCR, subscr_sig_cb, NULL);
+ register_signal_handler(SS_PAGING, paging_sig_cb, NULL);
+}