| /* OsmoMSC - Circuit-Switched Core Network (MSC+VLR+HLR+SMSC) implementation |
| */ |
| |
| /* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * All Rights Reserved |
| * |
| * Based on OsmoNITB: |
| * (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> |
| * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.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 <unistd.h> |
| #include <time.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| |
| #define _GNU_SOURCE |
| #include <getopt.h> |
| |
| /* build switches from the configure script */ |
| #include "../../bscconfig.h" |
| |
| #include <openbsc/db.h> |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/stats.h> |
| #include <openbsc/debug.h> |
| #include <osmocom/abis/abis.h> |
| #include <osmocom/abis/e1_input.h> |
| #include <osmocom/core/talloc.h> |
| #include <openbsc/signal.h> |
| #include <openbsc/osmo_msc.h> |
| #include <openbsc/bsc_msc_data.h> |
| #include <openbsc/sms_queue.h> |
| #include <osmocom/vty/telnet_interface.h> |
| #include <osmocom/vty/ports.h> |
| #include <osmocom/vty/logging.h> |
| #include <openbsc/vty.h> |
| #include <openbsc/bss.h> |
| #include <openbsc/mncc.h> |
| #include <openbsc/handover_decision.h> |
| #include <openbsc/rrlp.h> |
| #include <osmocom/ctrl/control_if.h> |
| #include <osmocom/ctrl/control_vty.h> |
| #include <osmocom/ctrl/ports.h> |
| #include <openbsc/ctrl.h> |
| #include <openbsc/osmo_bsc_rf.h> |
| #include <openbsc/smpp.h> |
| #include <openbsc/mgcpgw_client.h> |
| |
| #include <openbsc/msc_ifaces.h> |
| |
| #include <openbsc/iu.h> |
| #include <openbsc/iucs.h> |
| #include <openbsc/iucs_ranap.h> |
| |
| static const char * const osmomsc_copyright = |
| "OsmoMSC - Osmocom Circuit-Switched Core Network implementation\r\n" |
| "Copyright (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n" |
| "Based on OsmoNITB:\r\n" |
| " (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>\r\n" |
| " (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>\r\n" |
| "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\r\n" |
| "Dieter Spaar, Andreas Eversberg, Sylvain Munaut, Neels Hofmeyr\r\n\r\n" |
| "License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n" |
| "This is free software: you are free to change and redistribute it.\r\n" |
| "There is NO WARRANTY, to the extent permitted by law.\r\n"; |
| |
| void *tall_msc_ctx = NULL; |
| |
| /* satisfy deps from libbsc legacy. |
| TODO double check these */ |
| void *tall_fle_ctx = NULL; |
| void *tall_paging_ctx = NULL; |
| void *tall_map_ctx = NULL; |
| void *tall_upq_ctx = NULL; |
| /* end deps from libbsc legacy. */ |
| |
| static struct { |
| const char *database_name; |
| const char *config_file; |
| int daemonize; |
| const char *mncc_sock_path; |
| int use_db_counter; |
| } msc_cmdline_config = { |
| "sms.db", |
| "osmo-msc.cfg", |
| 0, |
| 0, |
| 1 |
| }; |
| |
| /* timer to store statistics */ |
| #define DB_SYNC_INTERVAL 60, 0 |
| #define EXPIRE_INTERVAL 10, 0 |
| |
| static struct osmo_timer_list db_sync_timer; |
| |
| static void create_pcap_file(char *file) |
| { |
| mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; |
| int fd = open(file, O_WRONLY|O_TRUNC|O_CREAT, mode); |
| |
| if (fd < 0) { |
| perror("Failed to open file for pcap"); |
| return; |
| } |
| |
| e1_set_pcap_fd(fd); |
| } |
| |
| static void print_usage() |
| { |
| printf("Usage: osmo-nitb\n"); |
| } |
| |
| static void print_help() |
| { |
| printf(" Some useful help...\n"); |
| printf(" -h --help This text.\n"); |
| printf(" -d option --debug=DRLL:DCC:DMM:DRR:DRSL:DNM Enable debugging.\n"); |
| printf(" -D --daemonize Fork the process into a background daemon.\n"); |
| printf(" -c --config-file filename The config file to use.\n"); |
| printf(" -s --disable-color\n"); |
| printf(" -l --database db-name The database to use.\n"); |
| printf(" -a --authorize-everyone Authorize every new subscriber. Dangerous!\n"); |
| printf(" -T --timestamp Prefix every log line with a timestamp.\n"); |
| printf(" -V --version Print the version of OpenBSC.\n"); |
| printf(" -P --rtp-proxy Enable the RTP Proxy code inside OpenBSC.\n"); |
| printf(" -e --log-level number Set a global loglevel.\n"); |
| printf(" -M --mncc-sock-path PATH Disable built-in MNCC handler and offer socket.\n"); |
| printf(" -m --mncc-sock Same as `-M /tmp/bsc_mncc' (deprecated).\n"); |
| printf(" -C --no-dbcounter Disable regular syncing of counters to database.\n"); |
| printf(" -r --rf-ctl PATH A unix domain socket to listen for cmds.\n"); |
| printf(" -p --pcap PATH Write abis communication to pcap trace file.\n"); |
| } |
| |
| static void handle_options(int argc, char **argv) |
| { |
| while (1) { |
| int option_index = 0, c; |
| static struct option long_options[] = { |
| {"help", 0, 0, 'h'}, |
| {"debug", 1, 0, 'd'}, |
| {"daemonize", 0, 0, 'D'}, |
| {"config-file", 1, 0, 'c'}, |
| {"disable-color", 0, 0, 's'}, |
| {"database", 1, 0, 'l'}, |
| {"authorize-everyone", 0, 0, 'a'}, |
| {"pcap", 1, 0, 'p'}, |
| {"timestamp", 0, 0, 'T'}, |
| {"version", 0, 0, 'V' }, |
| {"rtp-proxy", 0, 0, 'P'}, |
| {"log-level", 1, 0, 'e'}, |
| {"mncc-sock", 0, 0, 'm'}, |
| {"mncc-sock-path", 1, 0, 'M'}, |
| {"no-dbcounter", 0, 0, 'C'}, |
| {0, 0, 0, 0} |
| }; |
| |
| c = getopt_long(argc, argv, "hd:Dsl:ap:TPVc:e:mCM:", |
| long_options, &option_index); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 'h': |
| print_usage(); |
| print_help(); |
| exit(0); |
| case 's': |
| log_set_use_color(osmo_stderr_target, 0); |
| break; |
| case 'd': |
| log_parse_category_mask(osmo_stderr_target, optarg); |
| break; |
| case 'D': |
| msc_cmdline_config.daemonize = 1; |
| break; |
| case 'l': |
| msc_cmdline_config.database_name = optarg; |
| break; |
| case 'c': |
| msc_cmdline_config.config_file = optarg; |
| break; |
| case 'p': |
| create_pcap_file(optarg); |
| break; |
| case 'T': |
| log_set_print_timestamp(osmo_stderr_target, 1); |
| break; |
| #if BEFORE_MSCSPLIT |
| case 'P': |
| ipacc_rtp_direct = 0; |
| break; |
| #endif |
| case 'e': |
| log_set_log_level(osmo_stderr_target, atoi(optarg)); |
| break; |
| case 'M': |
| msc_cmdline_config.mncc_sock_path = optarg; |
| break; |
| case 'm': |
| msc_cmdline_config.mncc_sock_path = "/tmp/bsc_mncc"; |
| break; |
| case 'C': |
| msc_cmdline_config.use_db_counter = 0; |
| break; |
| case 'V': |
| print_version(1); |
| exit(0); |
| break; |
| default: |
| /* catch unknown options *as well as* missing arguments. */ |
| fprintf(stderr, "Error in command line options. Exiting.\n"); |
| exit(-1); |
| } |
| } |
| } |
| |
| struct gsm_network *msc_network_alloc(void *ctx, |
| mncc_recv_cb_t mncc_recv) |
| { |
| struct gsm_network *net = gsm_network_init(ctx, 1, 1, mncc_recv); |
| if (!net) |
| return NULL; |
| |
| net->name_long = talloc_strdup(net, "OsmoMSC"); |
| net->name_short = talloc_strdup(net, "OsmoMSC"); |
| |
| net->gsup_server_addr_str = talloc_strdup(net, |
| MSC_HLR_REMOTE_IP_DEFAULT); |
| net->gsup_server_port = MSC_HLR_REMOTE_PORT_DEFAULT; |
| |
| mgcpgw_client_conf_init(&net->mgcpgw.conf); |
| |
| return net; |
| } |
| |
| void msc_network_shutdown(struct gsm_network *net) |
| { |
| /* nothing here yet */ |
| } |
| |
| static struct gsm_network *msc_network = NULL; |
| |
| extern void *tall_vty_ctx; |
| static void signal_handler(int signal) |
| { |
| fprintf(stdout, "signal %u received\n", signal); |
| |
| switch (signal) { |
| case SIGINT: |
| msc_network_shutdown(msc_network); |
| osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL); |
| sleep(3); |
| exit(0); |
| break; |
| case SIGABRT: |
| osmo_generate_backtrace(); |
| /* in case of abort, we want to obtain a talloc report |
| * and then return to the caller, who will abort the process */ |
| case SIGUSR1: |
| talloc_report(tall_vty_ctx, stderr); |
| talloc_report_full(tall_msc_ctx, stderr); |
| break; |
| case SIGUSR2: |
| talloc_report_full(tall_vty_ctx, stderr); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* timer handling */ |
| static int _db_store_counter(struct osmo_counter *counter, void *data) |
| { |
| return db_store_counter(counter); |
| } |
| |
| static void db_sync_timer_cb(void *data) |
| { |
| /* store counters to database and re-schedule */ |
| osmo_counters_for_each(_db_store_counter, NULL); |
| osmo_timer_schedule(&db_sync_timer, DB_SYNC_INTERVAL); |
| } |
| |
| extern int bsc_vty_go_parent(struct vty *vty); |
| |
| static struct vty_app_info msc_vty_info = { |
| .name = "OsmoMSC", |
| .version = PACKAGE_VERSION, |
| .go_parent_cb = bsc_vty_go_parent, |
| .is_config_node = bsc_vty_is_config_node, |
| }; |
| |
| static int rcvmsg_iu_cs(struct msgb *msg, struct gprs_ra_id *ra_id, |
| uint16_t *sai) |
| { |
| DEBUGP(DIUCS, "got IuCS message" |
| " %d bytes: %s\n", |
| msg->len, osmo_hexdump(msg->data, msg->len)); |
| if (ra_id) { |
| DEBUGP(DIUCS, "got IuCS message on" |
| " MNC %d MCC %d LAC %d RAC %d\n", |
| ra_id->mnc, ra_id->mcc, ra_id->lac, ra_id->rac); |
| } |
| |
| return gsm0408_rcvmsg_iucs(msc_network, msg, ra_id? &ra_id->lac : NULL); |
| } |
| |
| static int rx_iu_event(struct ue_conn_ctx *ctx, enum iu_event_type type, |
| void *data) |
| { |
| DEBUGP(DIUCS, "got IuCS event %u: %s\n", type, |
| iu_event_type_str(type)); |
| |
| return iucs_rx_ranap_event(msc_network, ctx, type, data); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int rc; |
| |
| msc_vty_info.copyright = osmomsc_copyright; |
| |
| tall_msc_ctx = talloc_named_const(NULL, 1, "osmo_msc"); |
| talloc_ctx_init(tall_msc_ctx); |
| |
| osmo_init_logging(&log_info); |
| osmo_stats_init(tall_msc_ctx); |
| |
| /* For --version, vty_init() must be called before handling options */ |
| vty_init(&msc_vty_info); |
| |
| /* Parse options */ |
| handle_options(argc, argv); |
| |
| /* Allocate global gsm_network struct; choose socket/internal MNCC */ |
| msc_network = msc_network_alloc(tall_msc_ctx, |
| msc_cmdline_config.mncc_sock_path? |
| mncc_sock_from_cc |
| : int_mncc_recv); |
| if (!msc_network) |
| return -ENOMEM; |
| |
| if (msc_vlr_alloc(msc_network)) { |
| fprintf(stderr, "Failed to allocate VLR\n"); |
| exit(1); |
| } |
| |
| ctrl_vty_init(tall_msc_ctx); |
| logging_vty_add_cmds(&log_info); |
| msc_vty_init(msc_network); |
| bsc_vty_init_extra(); |
| |
| #ifdef BUILD_SMPP |
| if (smpp_openbsc_alloc_init(tall_msc_ctx) < 0) |
| return -1; |
| #endif |
| |
| /* |
| * For osmo-nitb, skip TCH/F for now, because otherwise dyn TS |
| * always imply the possibility to have a mix of TCH/F and |
| * TCH/H channels; if two phones request a TCH/F and a TCH/H, |
| * respectively, they cannot call each other. If we deny TCH/F, |
| * they will both fall back to TCH/H, and dynamic channels are |
| * usable. See OS#1778. |
| * |
| * A third-party MSC may well be able to handle a TCH/H TCH/F |
| * mismatch. Moreover, this option may be overwritten in the |
| * config file or in VTY. |
| */ |
| msc_network->dyn_ts_allow_tch_f = false; |
| |
| rc = vty_read_config_file(msc_cmdline_config.config_file, NULL); |
| if (rc < 0) { |
| LOGP(DNM, LOGL_FATAL, "Failed to parse the config file: '%s'\n", |
| msc_cmdline_config.config_file); |
| return 1; |
| } |
| |
| /* Initialize MNCC socket if appropriate */ |
| if (msc_cmdline_config.mncc_sock_path) { |
| rc = mncc_sock_init(msc_network, |
| msc_cmdline_config.mncc_sock_path); |
| if (rc) { |
| fprintf(stderr, "MNCC socket initialization failed. exiting.\n"); |
| exit(1); |
| } |
| } else |
| DEBUGP(DMNCC, "Using internal MNCC handler.\n"); |
| |
| /* start telnet after reading config for vty_get_bind_addr() */ |
| rc = telnet_init_dynif(tall_msc_ctx, &msc_network, |
| vty_get_bind_addr(), OSMO_VTY_PORT_MSC); |
| if (rc < 0) |
| return 2; |
| |
| /* BSC stuff is to be split behind an A-interface to be used with |
| * OsmoBSC, but there is no need to remove it yet. Most of the |
| * following code until iu_init() is legacy. */ |
| |
| #ifdef BUILD_SMPP |
| smpp_openbsc_start(msc_network); |
| #endif |
| |
| /* start control interface after reading config for |
| * ctrl_vty_get_bind_addr() */ |
| msc_network->ctrl = ctrl_interface_setup_dynip(msc_network, ctrl_vty_get_bind_addr(), |
| OSMO_CTRL_PORT_MSC, NULL); |
| if (!msc_network->ctrl) { |
| printf("Failed to initialize control interface. Exiting.\n"); |
| return -1; |
| } |
| |
| #if 0 |
| TODO: we probably want some of the _net_ ctrl commands from bsc_base_ctrl_cmds_install(). |
| if (bsc_base_ctrl_cmds_install() != 0) { |
| printf("Failed to initialize the BSC control commands.\n"); |
| return -1; |
| } |
| #endif |
| |
| if (msc_ctrl_cmds_install(msc_network) != 0) { |
| printf("Failed to initialize the MSC control commands.\n"); |
| return -1; |
| } |
| |
| /* seed the PRNG */ |
| srand(time(NULL)); |
| /* TODO: is this used for crypto?? Improve randomness, at least we |
| * should try to use the nanoseconds part of the current time. */ |
| |
| if (db_init(msc_cmdline_config.database_name)) { |
| printf("DB: Failed to init database: %s\n", |
| msc_cmdline_config.database_name); |
| return 4; |
| } |
| |
| osmo_fsm_log_addr(true); |
| if (msc_vlr_start(msc_network)) { |
| fprintf(stderr, "Failed to start VLR\n"); |
| exit(1); |
| } |
| |
| msc_subscr_conn_init(); |
| |
| if (db_prepare()) { |
| printf("DB: Failed to prepare database.\n"); |
| return 5; |
| } |
| |
| /* setup the timer */ |
| osmo_timer_setup(&db_sync_timer, db_sync_timer_cb, NULL); |
| if (msc_cmdline_config.use_db_counter) |
| osmo_timer_schedule(&db_sync_timer, DB_SYNC_INTERVAL); |
| |
| signal(SIGINT, &signal_handler); |
| signal(SIGABRT, &signal_handler); |
| signal(SIGUSR1, &signal_handler); |
| signal(SIGUSR2, &signal_handler); |
| osmo_init_ignore_signals(); |
| |
| /* start the SMS queue */ |
| if (sms_queue_start(msc_network, 20) != 0) |
| return -1; |
| |
| msc_network->mgcpgw.client = mgcpgw_client_init( |
| msc_network, &msc_network->mgcpgw.conf); |
| |
| if (mgcpgw_client_connect(msc_network->mgcpgw.client)) { |
| printf("MGCPGW connect failed\n"); |
| return 7; |
| } |
| |
| /* Set up A-Interface */ |
| /* TODO: implement A-Interface and remove above legacy stuff. */ |
| |
| #ifdef BUILD_IU |
| /* Set up IuCS */ |
| iu_init(tall_msc_ctx, "127.0.0.1", 14001, rcvmsg_iu_cs, rx_iu_event); |
| #endif |
| |
| if (msc_cmdline_config.daemonize) { |
| rc = osmo_daemonize(); |
| if (rc < 0) { |
| perror("Error during daemonize"); |
| return 6; |
| } |
| } |
| |
| while (1) { |
| log_reset_context(); |
| osmo_select_main(0); |
| } |
| } |