| /* 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/msc_a.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 msc_a *msc_a) |
| { |
| struct gsm_network *net = msc_a_net(msc_a); |
| 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; |
| } |
| |
| LOG_MSC_A_CAT(msc_a, DRR, LOGL_INFO, "Sending '%s' RRLP position request\n", msc_rrlp_mode_name(net->rrlp.mode)); |
| |
| return gsm48_send_rr_app_info(msc_a, 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 msc_a *msc_a; |
| |
| switch (signal) { |
| case S_SUBSCR_ATTACHED: |
| /* A subscriber has attached. */ |
| vsub = signal_data; |
| msc_a = msc_a_for_vsub(vsub, true); |
| if (!msc_a) |
| break; |
| send_rrlp_req(msc_a); |
| 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->msc_a); |
| 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); |
| } |