499 lines
12 KiB
C
499 lines
12 KiB
C
/* "Application" code of the layer2/3 stack */
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/* (C) 2010 by Holger Hans Peter Freyther
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* (C) 2010 by Harald Welte <laforge@gnumonks.org>
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* (C) 2010 by Andreas Eversberg <jolly@eversberg.eu>
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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*/
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#include <errno.h>
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#include <signal.h>
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#include <osmocom/bb/common/osmocom_data.h>
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#include <osmocom/bb/common/l1l2_interface.h>
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#include <osmocom/bb/common/l1ctl.h>
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#include <osmocom/bb/common/logging.h>
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#include <osmocom/bb/common/gps.h>
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#include <osmocom/bb/mobile/gsm48_rr.h>
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#include <osmocom/bb/mobile/gsm480_ss.h>
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#include <osmocom/bb/mobile/gsm411_sms.h>
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#include <osmocom/bb/mobile/vty.h>
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#include <osmocom/bb/mobile/app_mobile.h>
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#include <osmocom/bb/mobile/mncc.h>
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#include <osmocom/bb/mobile/voice.h>
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#include <osmocom/bb/mobile/primitives.h>
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#include <osmocom/bb/common/sap_interface.h>
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#include <osmocom/vty/ports.h>
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#include <osmocom/vty/logging.h>
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#include <osmocom/vty/telnet_interface.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/signal.h>
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#include <l1ctl_proto.h>
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extern void *l23_ctx;
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extern struct llist_head ms_list;
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extern int vty_reading;
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int mncc_recv_mobile(struct osmocom_ms *ms, int msg_type, void *arg);
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int mncc_recv_dummy(struct osmocom_ms *ms, int msg_type, void *arg);
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int (*mncc_recv_app)(struct osmocom_ms *ms, int, void *);
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static int quit;
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/* handle ms instance */
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int mobile_work(struct osmocom_ms *ms)
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{
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int work = 0, w;
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do {
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w = 0;
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w |= gsm48_rsl_dequeue(ms);
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w |= gsm48_rr_dequeue(ms);
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w |= gsm48_mmxx_dequeue(ms);
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w |= gsm48_mmr_dequeue(ms);
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w |= gsm48_mmevent_dequeue(ms);
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w |= gsm322_plmn_dequeue(ms);
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w |= gsm322_cs_dequeue(ms);
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w |= gsm_sim_job_dequeue(ms);
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w |= mncc_dequeue(ms);
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if (w)
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work = 1;
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} while (w);
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return work;
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}
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/* run ms instance, if layer1 is available */
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int mobile_signal_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 osmocom_ms *ms;
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struct gsm_settings *set;
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struct msgb *nmsg;
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if (subsys != SS_L1CTL)
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return 0;
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switch (signal) {
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case S_L1CTL_RESET:
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ms = signal_data;
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set = &ms->settings;
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/* waiting for reset after shutdown */
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if (ms->shutdown == MS_SHUTDOWN_WAIT_RESET) {
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LOGP(DMOB, LOGL_NOTICE, "MS '%s' has been reset\n", ms->name);
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ms->shutdown = MS_SHUTDOWN_COMPL;
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break;
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}
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if (ms->started)
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break;
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/* insert test card, if enabled */
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switch (set->sim_type) {
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case GSM_SIM_TYPE_L1PHY:
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/* trigger sim card reader process */
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gsm_subscr_simcard(ms);
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break;
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case GSM_SIM_TYPE_TEST:
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gsm_subscr_testcard(ms, set->test_rplmn_mcc,
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set->test_rplmn_mnc, set->test_lac,
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set->test_tmsi, set->test_imsi_attached);
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break;
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case GSM_SIM_TYPE_SAP:
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gsm_subscr_sapcard(ms);
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break;
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default:
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/* no SIM, trigger PLMN selection process */
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nmsg = gsm322_msgb_alloc(GSM322_EVENT_SWITCH_ON);
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if (!nmsg)
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return -ENOMEM;
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gsm322_plmn_sendmsg(ms, nmsg);
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nmsg = gsm322_msgb_alloc(GSM322_EVENT_SWITCH_ON);
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if (!nmsg)
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return -ENOMEM;
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gsm322_cs_sendmsg(ms, nmsg);
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}
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mobile_set_started(ms, true);
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}
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return 0;
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}
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/* power-off ms instance */
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int mobile_exit(struct osmocom_ms *ms, int force)
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{
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struct gsm48_mmlayer *mm = &ms->mmlayer;
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/* if shutdown is already performed */
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if (ms->shutdown >= MS_SHUTDOWN_WAIT_RESET)
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return 0;
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if (!force && ms->started) {
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struct msgb *nmsg;
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mobile_set_shutdown(ms, MS_SHUTDOWN_IMSI_DETACH);
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nmsg = gsm48_mmevent_msgb_alloc(GSM48_MM_EVENT_IMSI_DETACH);
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if (!nmsg)
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return -ENOMEM;
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gsm48_mmevent_msg(mm->ms, nmsg);
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return -EBUSY;
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}
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gsm322_exit(ms);
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gsm48_mm_exit(ms);
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gsm48_rr_exit(ms);
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gsm_subscr_exit(ms);
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gsm48_cc_exit(ms);
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gsm480_ss_exit(ms);
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gsm411_sms_exit(ms);
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gsm_sim_exit(ms);
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lapdm_channel_exit(&ms->lapdm_channel);
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if (ms->started) {
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mobile_set_shutdown(ms, MS_SHUTDOWN_WAIT_RESET); /* being down, wait for reset */
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l1ctl_tx_reset_req(ms, L1CTL_RES_T_FULL);
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} else {
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mobile_set_shutdown(ms, MS_SHUTDOWN_COMPL); /* being down */
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}
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vty_notify(ms, NULL);
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vty_notify(ms, "Power off!\n");
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LOGP(DMOB, LOGL_NOTICE, "Power off! (MS %s)\n", ms->name);
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return 0;
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}
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/* power-on ms instance */
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static int mobile_init(struct osmocom_ms *ms)
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{
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int rc;
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gsm_settings_arfcn(ms);
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lapdm_channel_init(&ms->lapdm_channel, LAPDM_MODE_MS);
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ms->lapdm_channel.lapdm_dcch.datalink[DL_SAPI3].dl.t200_sec =
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T200_DCCH_SHARED;
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ms->lapdm_channel.lapdm_dcch.datalink[DL_SAPI3].dl.t200_usec = 0;
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ms->lapdm_channel.lapdm_acch.datalink[DL_SAPI3].dl.t200_sec =
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T200_ACCH;
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ms->lapdm_channel.lapdm_acch.datalink[DL_SAPI3].dl.t200_usec = 0;
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lapdm_channel_set_l1(&ms->lapdm_channel, l1ctl_ph_prim_cb, ms);
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/* init SAP client before SIM card starts up */
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sap_init(ms);
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/* SAP response call-back */
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ms->sap_entity.sap_rsp_cb = &gsm_subscr_sap_rsp_cb;
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gsm_sim_init(ms);
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gsm48_cc_init(ms);
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gsm480_ss_init(ms);
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gsm411_sms_init(ms);
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gsm_voice_init(ms);
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gsm_subscr_init(ms);
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gsm48_rr_init(ms);
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gsm48_mm_init(ms);
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INIT_LLIST_HEAD(&ms->trans_list);
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gsm322_init(ms);
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rc = layer2_open(ms, ms->settings.layer2_socket_path);
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if (rc < 0) {
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LOGP(DMOB, LOGL_ERROR, "Failed during layer2_open(%s)\n", ms->settings.layer2_socket_path);
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ms->l2_wq.bfd.fd = -1;
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mobile_exit(ms, 1);
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return rc;
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}
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gsm_random_imei(&ms->settings);
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mobile_set_shutdown(ms, MS_SHUTDOWN_NONE);
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mobile_set_started(ms, false);
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if (!strcmp(ms->settings.imei, "000000000000000")) {
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LOGP(DMOB, LOGL_NOTICE, "***\nWarning: Mobile '%s' has default IMEI: %s\n",
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ms->name, ms->settings.imei);
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LOGP(DMOB, LOGL_NOTICE, "This could relate your identitiy to other users with "
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"default IMEI.\n***\n");
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}
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l1ctl_tx_reset_req(ms, L1CTL_RES_T_FULL);
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LOGP(DMOB, LOGL_NOTICE, "Mobile '%s' initialized, please start phone now!\n", ms->name);
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return 0;
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}
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int mobile_start(struct osmocom_ms *ms, char **other_name)
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{
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struct osmocom_ms *tmp;
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int rc;
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if (ms->shutdown != MS_SHUTDOWN_COMPL)
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return 0;
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llist_for_each_entry(tmp, &ms_list, entity) {
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if (tmp->shutdown == MS_SHUTDOWN_COMPL)
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continue;
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if (!strcmp(ms->settings.layer2_socket_path,
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tmp->settings.layer2_socket_path)) {
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LOGP(DMOB, LOGL_ERROR, "Cannot start MS '%s', because MS '%s' "
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"use the same layer2-socket.\nPlease shutdown "
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"MS '%s' first.\n", ms->name, tmp->name, tmp->name);
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*other_name = tmp->name;
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return -1;
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}
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if (!strcmp(ms->settings.sap_socket_path,
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tmp->settings.sap_socket_path)) {
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LOGP(DMOB, LOGL_ERROR, "Cannot start MS '%s', because MS '%s' "
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"use the same sap-socket.\nPlease shutdown "
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"MS '%s' first.\n", ms->name, tmp->name, tmp->name);
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*other_name = tmp->name;
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return -2;
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}
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}
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rc = mobile_init(ms);
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if (rc < 0)
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return -3;
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return 0;
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}
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int mobile_stop(struct osmocom_ms *ms, int force)
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{
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if (force && ms->shutdown <= MS_SHUTDOWN_IMSI_DETACH)
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return mobile_exit(ms, 1);
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if (!force && ms->shutdown == MS_SHUTDOWN_NONE)
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return mobile_exit(ms, 0);
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return 0;
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}
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/* create ms instance */
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struct osmocom_ms *mobile_new(char *name)
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{
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static struct osmocom_ms *ms;
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char *mncc_name;
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ms = talloc_zero(l23_ctx, struct osmocom_ms);
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if (!ms) {
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LOGP(DMOB, LOGL_ERROR, "Failed to allocate MS: %s\n", name);
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return NULL;
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}
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talloc_set_name(ms, "ms_%s", name);
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ms->name = talloc_strdup(ms, name);
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ms->l2_wq.bfd.fd = -1;
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ms->sap_wq.bfd.fd = -1;
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/* Register a new MS */
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llist_add_tail(&ms->entity, &ms_list);
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gsm_support_init(ms);
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gsm_settings_init(ms);
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mobile_set_shutdown(ms, MS_SHUTDOWN_COMPL);
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if (mncc_recv_app) {
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mncc_name = talloc_asprintf(ms, "/tmp/ms_mncc_%s", ms->name);
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ms->mncc_entity.mncc_recv = mncc_recv_app;
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ms->mncc_entity.sock_state = mncc_sock_init(ms, mncc_name);
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talloc_free(mncc_name);
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} else if (ms->settings.ch_cap == GSM_CAP_SDCCH)
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ms->mncc_entity.mncc_recv = mncc_recv_dummy;
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else
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ms->mncc_entity.mncc_recv = mncc_recv_mobile;
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return ms;
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}
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/* destroy ms instance */
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int mobile_delete(struct osmocom_ms *ms, int force)
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{
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int rc;
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ms->deleting = true;
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if (mncc_recv_app) {
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mncc_sock_exit(ms->mncc_entity.sock_state);
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ms->mncc_entity.sock_state = NULL;
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}
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if (ms->shutdown == MS_SHUTDOWN_NONE || (ms->shutdown == MS_SHUTDOWN_IMSI_DETACH && force)) {
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rc = mobile_exit(ms, force);
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if (rc < 0)
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return rc;
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}
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return 0;
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}
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/* handle global shutdown */
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int global_signal_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 osmocom_ms *ms, *ms2;
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if (subsys != SS_GLOBAL)
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return 0;
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switch (signal) {
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case S_GLOBAL_SHUTDOWN:
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/* force to exit, if signalled */
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if (signal_data && *((uint8_t *)signal_data))
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quit = 1;
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llist_for_each_entry_safe(ms, ms2, &ms_list, entity)
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mobile_delete(ms, quit);
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/* quit, after all MS processes are gone */
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quit = 1;
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break;
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}
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return 0;
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}
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/* global work handler */
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int l23_app_work(int *_quit)
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{
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struct osmocom_ms *ms, *ms2;
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int work = 0;
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llist_for_each_entry_safe(ms, ms2, &ms_list, entity) {
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if (ms->shutdown != MS_SHUTDOWN_COMPL)
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work |= mobile_work(ms);
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if (ms->shutdown == MS_SHUTDOWN_COMPL) {
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if (ms->l2_wq.bfd.fd > -1) {
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layer2_close(ms);
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ms->l2_wq.bfd.fd = -1;
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}
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if (ms->sap_wq.bfd.fd > -1) {
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sap_close(ms);
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ms->sap_wq.bfd.fd = -1;
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}
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if (ms->deleting) {
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gsm_settings_exit(ms);
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llist_del(&ms->entity);
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talloc_free(ms);
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work = 1;
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}
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}
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}
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/* return, if a shutdown was scheduled (quit = 1) */
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*_quit = quit;
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return work;
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}
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/* global exit */
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int l23_app_exit(void)
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{
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osmo_signal_unregister_handler(SS_L1CTL, &gsm322_l1_signal, NULL);
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osmo_signal_unregister_handler(SS_L1CTL, &mobile_signal_cb, NULL);
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osmo_signal_unregister_handler(SS_GLOBAL, &global_signal_cb, NULL);
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osmo_gps_close();
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telnet_exit();
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return 0;
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}
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static struct vty_app_info vty_info = {
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.name = "OsmocomBB",
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.version = PACKAGE_VERSION,
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.go_parent_cb = ms_vty_go_parent,
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};
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/* global init */
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int l23_app_init(int (*mncc_recv)(struct osmocom_ms *ms, int, void *),
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const char *config_file)
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{
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struct telnet_connection dummy_conn;
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int rc = 0;
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mncc_recv_app = mncc_recv;
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osmo_gps_init();
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vty_info.tall_ctx = l23_ctx;
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vty_init(&vty_info);
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logging_vty_add_cmds();
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ms_vty_init();
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dummy_conn.priv = NULL;
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vty_reading = 1;
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if (config_file != NULL) {
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rc = vty_read_config_file(config_file, &dummy_conn);
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if (rc < 0) {
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LOGP(DMOB, LOGL_FATAL, "Failed to parse the configuration "
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"file '%s'\n", config_file);
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LOGP(DMOB, LOGL_FATAL, "Please make sure the file "
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"'%s' exists, or use an example from "
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"'doc/examples/mobile/'\n", config_file);
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return rc;
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}
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LOGP(DMOB, LOGL_INFO, "Using configuration from '%s'\n", config_file);
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}
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vty_reading = 0;
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rc = telnet_init_default(l23_ctx, NULL, OSMO_VTY_PORT_BB);
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if (rc < 0) {
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LOGP(DMOB, LOGL_FATAL, "Cannot init VTY on %s port %u: %s\n",
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vty_get_bind_addr(), OSMO_VTY_PORT_BB, strerror(errno));
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return rc;
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}
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osmo_signal_register_handler(SS_GLOBAL, &global_signal_cb, NULL);
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osmo_signal_register_handler(SS_L1CTL, &mobile_signal_cb, NULL);
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osmo_signal_register_handler(SS_L1CTL, &gsm322_l1_signal, NULL);
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if (llist_empty(&ms_list)) {
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struct osmocom_ms *ms;
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LOGP(DMOB, LOGL_NOTICE, "No Mobile Station defined, creating: MS '1'\n");
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ms = mobile_new("1");
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if (!ms)
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return -1;
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rc = mobile_init(ms);
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if (rc < 0)
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return rc;
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}
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quit = 0;
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return 0;
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}
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void mobile_set_started(struct osmocom_ms *ms, bool state)
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{
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ms->started = state;
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mobile_prim_ntfy_started(ms, state);
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}
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void mobile_set_shutdown(struct osmocom_ms *ms, int state)
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{
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int old_state = ms->shutdown;
|
|
ms->shutdown = state;
|
|
|
|
mobile_prim_ntfy_shutdown(ms, old_state, state);
|
|
}
|