127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/* Radio Resource LCS (Location) Protocol, GMS TS 04.31 */
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/* (C) 2009 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdint.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/msc/gsm_04_08.h>
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#include <osmocom/msc/signal.h>
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#include <osmocom/msc/debug.h>
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#include <osmocom/msc/gsm_subscriber.h>
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#include <osmocom/msc/msc_a.h>
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/* RRLP msPositionReq, nsBased,
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* Accuracy=60, Method=gps, ResponseTime=2, oneSet */
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static const uint8_t ms_based_pos_req[] = { 0x40, 0x01, 0x78, 0xa8 };
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/* RRLP msPositionReq, msBasedPref,
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Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
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static const uint8_t ms_pref_pos_req[] = { 0x40, 0x02, 0x79, 0x50 };
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/* RRLP msPositionReq, msAssistedPref,
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Accuracy=60, Method=gpsOrEOTD, ResponseTime=5, multipleSets */
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static const uint8_t ass_pref_pos_req[] = { 0x40, 0x03, 0x79, 0x50 };
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static const struct value_string rrlp_mode_names[] = {
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{ RRLP_MODE_NONE, "none" },
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{ RRLP_MODE_MS_BASED, "ms-based" },
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{ RRLP_MODE_MS_PREF, "ms-preferred" },
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{ RRLP_MODE_ASS_PREF, "ass-preferred" },
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{ 0, NULL }
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};
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enum rrlp_mode msc_rrlp_mode_parse(const char *arg)
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{
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return get_string_value(rrlp_mode_names, arg);
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}
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const char *msc_rrlp_mode_name(enum rrlp_mode mode)
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{
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return get_value_string(rrlp_mode_names, mode);
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}
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static int send_rrlp_req(struct msc_a *msc_a)
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{
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struct gsm_network *net = msc_a_net(msc_a);
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const uint8_t *req;
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switch (net->rrlp.mode) {
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case RRLP_MODE_MS_BASED:
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req = ms_based_pos_req;
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break;
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case RRLP_MODE_MS_PREF:
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req = ms_pref_pos_req;
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break;
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case RRLP_MODE_ASS_PREF:
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req = ass_pref_pos_req;
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break;
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case RRLP_MODE_NONE:
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default:
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return 0;
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}
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LOG_MSC_A_CAT(msc_a, DRR, LOGL_INFO, "Sending '%s' RRLP position request\n", msc_rrlp_mode_name(net->rrlp.mode));
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return gsm48_send_rr_app_info(msc_a, 0x00, sizeof(ms_based_pos_req), req);
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}
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static int subscr_sig_cb(unsigned int subsys, unsigned int signal,
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void *handler_data, void *signal_data)
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{
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struct vlr_subscr *vsub;
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struct msc_a *msc_a;
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switch (signal) {
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case S_SUBSCR_ATTACHED:
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/* A subscriber has attached. */
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vsub = signal_data;
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msc_a = msc_a_for_vsub(vsub, true);
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if (!msc_a)
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break;
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send_rrlp_req(msc_a);
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break;
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}
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return 0;
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}
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static int paging_sig_cb(unsigned int subsys, unsigned int signal,
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void *handler_data, void *signal_data)
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{
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struct paging_signal_data *psig_data = signal_data;
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switch (signal) {
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case S_PAGING_SUCCEEDED:
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/* A subscriber has attached. */
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send_rrlp_req(psig_data->msc_a);
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break;
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case S_PAGING_EXPIRED:
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break;
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}
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return 0;
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}
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void msc_rrlp_init(void)
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{
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osmo_signal_register_handler(SS_SUBSCR, subscr_sig_cb, NULL);
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osmo_signal_register_handler(SS_PAGING, paging_sig_cb, NULL);
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}
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