403 lines
10 KiB
C
403 lines
10 KiB
C
/* A hackish minimal BSC (+MSC +HLR) implementation */
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/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
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* (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
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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 <unistd.h>
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#include <time.h>
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#include <errno.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#define _GNU_SOURCE
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#include <getopt.h>
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#include <openbsc/db.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/stats.h>
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#include <openbsc/debug.h>
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#include <osmocom/abis/abis.h>
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#include <osmocom/abis/e1_input.h>
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#include <osmocom/core/talloc.h>
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#include <openbsc/signal.h>
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#include <openbsc/osmo_msc.h>
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#include <openbsc/bsc_msc_data.h>
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#include <openbsc/sms_queue.h>
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#include <openbsc/vty.h>
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#include <openbsc/bss.h>
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#include <openbsc/mncc.h>
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#include <openbsc/token_auth.h>
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#include <openbsc/handover_decision.h>
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#include <openbsc/rrlp.h>
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#include <osmocom/ctrl/control_if.h>
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#include <osmocom/ctrl/ports.h>
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#include <osmocom/ctrl/control_vty.h>
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#include <openbsc/ctrl.h>
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#include <openbsc/osmo_bsc_rf.h>
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#include <openbsc/smpp.h>
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#include "../../bscconfig.h"
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/* MCC and MNC for the Location Area Identifier */
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struct gsm_network *bsc_gsmnet = 0;
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static const char *database_name = "hlr.sqlite3";
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static const char *config_file = "openbsc.cfg";
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static const char *rf_ctrl_path = NULL;
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extern const char *openbsc_copyright;
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static int daemonize = 0;
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static const char *mncc_sock_path = NULL;
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static int use_db_counter = 1;
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/* timer to store statistics */
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#define DB_SYNC_INTERVAL 60, 0
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#define EXPIRE_INTERVAL 10, 0
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static struct osmo_timer_list db_sync_timer;
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static void create_pcap_file(char *file)
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{
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mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
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int fd = open(file, O_WRONLY|O_TRUNC|O_CREAT, mode);
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if (fd < 0) {
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perror("Failed to open file for pcap");
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return;
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}
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e1_set_pcap_fd(fd);
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}
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static void print_usage()
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{
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printf("Usage: osmo-nitb\n");
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}
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static void print_help()
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{
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printf(" Some useful help...\n");
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printf(" -h --help This text.\n");
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printf(" -d option --debug=DRLL:DCC:DMM:DRR:DRSL:DNM Enable debugging.\n");
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printf(" -D --daemonize Fork the process into a background daemon.\n");
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printf(" -c --config-file filename The config file to use.\n");
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printf(" -s --disable-color\n");
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printf(" -l --database db-name The database to use.\n");
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printf(" -a --authorize-everyone Authorize every new subscriber. Dangerous!\n");
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printf(" -T --timestamp Prefix every log line with a timestamp.\n");
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printf(" -V --version Print the version of OpenBSC.\n");
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printf(" -P --rtp-proxy Enable the RTP Proxy code inside OpenBSC.\n");
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printf(" -e --log-level number Set a global loglevel.\n");
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printf(" -M --mncc-sock-path PATH Disable built-in MNCC handler and offer socket.\n");
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printf(" -m --mncc-sock Same as `-M /tmp/bsc_mncc' (deprecated).\n");
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printf(" -C --no-dbcounter Disable regular syncing of counters to database.\n");
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printf(" -r --rf-ctl PATH A unix domain socket to listen for cmds.\n");
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printf(" -p --pcap PATH Write abis communication to pcap trace file.\n");
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}
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static void handle_options(int argc, char **argv)
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{
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while (1) {
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int option_index = 0, c;
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static struct option long_options[] = {
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{"help", 0, 0, 'h'},
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{"debug", 1, 0, 'd'},
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{"daemonize", 0, 0, 'D'},
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{"config-file", 1, 0, 'c'},
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{"disable-color", 0, 0, 's'},
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{"database", 1, 0, 'l'},
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{"authorize-everyone", 0, 0, 'a'},
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{"pcap", 1, 0, 'p'},
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{"timestamp", 0, 0, 'T'},
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{"version", 0, 0, 'V' },
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{"rtp-proxy", 0, 0, 'P'},
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{"log-level", 1, 0, 'e'},
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{"mncc-sock", 0, 0, 'm'},
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{"mncc-sock-path", 1, 0, 'M'},
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{"no-dbcounter", 0, 0, 'C'},
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{"rf-ctl", 1, 0, 'r'},
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{0, 0, 0, 0}
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};
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c = getopt_long(argc, argv, "hd:Dsl:ar:p:TPVc:e:mCr:M:",
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long_options, &option_index);
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if (c == -1)
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break;
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switch (c) {
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case 'h':
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print_usage();
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print_help();
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exit(0);
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case 's':
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log_set_use_color(osmo_stderr_target, 0);
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break;
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case 'd':
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log_parse_category_mask(osmo_stderr_target, optarg);
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break;
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case 'D':
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daemonize = 1;
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break;
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case 'l':
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database_name = optarg;
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break;
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case 'c':
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config_file = optarg;
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break;
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case 'p':
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create_pcap_file(optarg);
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break;
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case 'T':
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log_set_print_timestamp(osmo_stderr_target, 1);
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break;
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case 'P':
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ipacc_rtp_direct = 0;
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break;
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case 'e':
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log_set_log_level(osmo_stderr_target, atoi(optarg));
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break;
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case 'M':
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mncc_sock_path = optarg;
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break;
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case 'm':
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mncc_sock_path = "/tmp/bsc_mncc";
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break;
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case 'C':
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use_db_counter = 0;
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break;
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case 'V':
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print_version(1);
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exit(0);
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break;
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case 'r':
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rf_ctrl_path = optarg;
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break;
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default:
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/* catch unknown options *as well as* missing arguments. */
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fprintf(stderr, "Error in command line options. Exiting.\n");
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exit(-1);
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break;
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}
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}
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}
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extern void *tall_vty_ctx;
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static void signal_handler(int signal)
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{
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fprintf(stdout, "signal %u received\n", signal);
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switch (signal) {
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case SIGINT:
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bsc_shutdown_net(bsc_gsmnet);
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osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL);
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sleep(3);
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exit(0);
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break;
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case SIGABRT:
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osmo_generate_backtrace();
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/* in case of abort, we want to obtain a talloc report
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* and then return to the caller, who will abort the process */
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case SIGUSR1:
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talloc_report(tall_vty_ctx, stderr);
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talloc_report_full(tall_bsc_ctx, stderr);
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break;
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case SIGUSR2:
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talloc_report_full(tall_vty_ctx, stderr);
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break;
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default:
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break;
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}
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}
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/* timer handling */
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static int _db_store_counter(struct osmo_counter *counter, void *data)
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{
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return db_store_counter(counter);
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}
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static void db_sync_timer_cb(void *data)
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{
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/* store counters to database and re-schedule */
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osmo_counters_for_each(_db_store_counter, NULL);
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osmo_timer_schedule(&db_sync_timer, DB_SYNC_INTERVAL);
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}
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static void subscr_expire_cb(void *data)
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{
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subscr_expire(bsc_gsmnet->subscr_group);
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osmo_timer_schedule(&bsc_gsmnet->subscr_expire_timer, EXPIRE_INTERVAL);
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}
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extern int bsc_vty_go_parent(struct vty *vty);
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static struct vty_app_info vty_info = {
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.name = "OpenBSC",
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.version = PACKAGE_VERSION,
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.go_parent_cb = bsc_vty_go_parent,
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.is_config_node = bsc_vty_is_config_node,
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};
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int main(int argc, char **argv)
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{
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int rc;
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vty_info.copyright = openbsc_copyright;
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tall_bsc_ctx = talloc_named_const(NULL, 1, "openbsc");
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talloc_ctx_init(tall_bsc_ctx);
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on_dso_load_token();
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on_dso_load_rrlp();
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on_dso_load_ho_dec();
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libosmo_abis_init(tall_bsc_ctx);
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osmo_init_logging(&log_info);
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osmo_stats_init(tall_bsc_ctx);
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bts_init();
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vty_init(&vty_info);
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/* Parse options */
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handle_options(argc, argv);
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/* Allocate global gsm_network struct; choose socket/internal MNCC */
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rc = bsc_network_alloc(mncc_sock_path?
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mncc_sock_from_cc : int_mncc_recv);
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if (rc) {
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fprintf(stderr, "Allocation failed. Exiting.\n");
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exit(1);
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}
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/* Initialize VTY */
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bsc_vty_init(bsc_gsmnet);
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ctrl_vty_init(tall_bsc_ctx);
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#ifdef BUILD_SMPP
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if (smpp_openbsc_alloc_init(tall_bsc_ctx) < 0)
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return -1;
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#endif
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/* Initialize MNCC socket if appropriate */
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if (mncc_sock_path) {
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rc = mncc_sock_init(bsc_gsmnet, mncc_sock_path);
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if (rc) {
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fprintf(stderr, "MNCC socket initialization failed. exiting.\n");
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exit(1);
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}
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} else
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DEBUGP(DMNCC, "Using internal MNCC handler.\n");
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/*
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* For osmo-nitb, skip TCH/F for now, because otherwise dyn TS
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* always imply the possibility to have a mix of TCH/F and
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* TCH/H channels; if two phones request a TCH/F and a TCH/H,
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* respectively, they cannot call each other. If we deny TCH/F,
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* they will both fall back to TCH/H, and dynamic channels are
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* usable. See OS#1778.
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*
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* A third-party MSC may well be able to handle a TCH/H TCH/F
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* mismatch. Moreover, this option may be overwritten in the
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* config file or in VTY.
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*/
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bsc_gsmnet->dyn_ts_allow_tch_f = false;
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/* Read the config */
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rc = bsc_network_configure(config_file);
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if (rc < 0) {
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fprintf(stderr, "Reading config failed. Exiting.\n");
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exit(1);
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}
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#ifdef BUILD_SMPP
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smpp_openbsc_start(bsc_gsmnet);
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#endif
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bsc_api_init(bsc_gsmnet, msc_bsc_api());
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/* start control interface after reading config for
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* ctrl_vty_get_bind_addr() */
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bsc_gsmnet->ctrl = bsc_controlif_setup(bsc_gsmnet,
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ctrl_vty_get_bind_addr(),
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OSMO_CTRL_PORT_NITB_BSC);
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if (!bsc_gsmnet->ctrl) {
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printf("Failed to initialize control interface. Exiting.\n");
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return -1;
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}
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if (bsc_base_ctrl_cmds_install() != 0) {
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printf("Failed to initialize the BSC control commands.\n");
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return -1;
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}
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if (msc_ctrl_cmds_install() != 0) {
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printf("Failed to initialize the MSC control commands.\n");
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return -1;
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}
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/* seed the PRNG */
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srand(time(NULL));
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bsc_gsmnet->bsc_data->rf_ctrl = osmo_bsc_rf_create(rf_ctrl_path, bsc_gsmnet);
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if (!bsc_gsmnet->bsc_data->rf_ctrl) {
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fprintf(stderr, "Failed to create the RF service.\n");
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exit(1);
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}
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if (db_init(database_name)) {
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printf("DB: Failed to init database. Please check the option settings.\n");
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return -1;
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}
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printf("DB: Database initialized.\n");
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if (db_prepare()) {
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printf("DB: Failed to prepare database.\n");
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return -1;
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}
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printf("DB: Database prepared.\n");
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/* setup the timer */
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osmo_timer_setup(&db_sync_timer, db_sync_timer_cb, NULL);
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if (use_db_counter)
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osmo_timer_schedule(&db_sync_timer, DB_SYNC_INTERVAL);
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osmo_timer_setup(&bsc_gsmnet->subscr_expire_timer, subscr_expire_cb,
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NULL);
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osmo_timer_schedule(&bsc_gsmnet->subscr_expire_timer, EXPIRE_INTERVAL);
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signal(SIGINT, &signal_handler);
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signal(SIGABRT, &signal_handler);
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signal(SIGUSR1, &signal_handler);
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signal(SIGUSR2, &signal_handler);
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osmo_init_ignore_signals();
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/* start the SMS queue */
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if (sms_queue_start(bsc_gsmnet, 20) != 0)
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return -1;
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if (daemonize) {
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rc = osmo_daemonize();
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if (rc < 0) {
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perror("Error during daemonize");
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exit(1);
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}
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}
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while (1) {
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log_reset_context();
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osmo_select_main(0);
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}
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}
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