228 lines
5.8 KiB
C
228 lines
5.8 KiB
C
/* Osmocom STP (Signal Transfer Point) */
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/* (C) 2015-2017 by Harald Welte <laforge@gnumonks.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 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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* You should have received a copy of the GNU 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <signal.h>
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#include <osmocom/core/stats.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/signal.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/vty/vty.h>
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#include <osmocom/vty/stats.h>
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#include <osmocom/vty/command.h>
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#include <osmocom/vty/ports.h>
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#include <osmocom/vty/telnet_interface.h>
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#include <osmocom/vty/logging.h>
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#include <osmocom/vty/misc.h>
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#include <osmocom/vty/cpu_sched_vty.h>
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#include <osmocom/sigtran/osmo_ss7.h>
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#include <osmocom/sigtran/sccp_sap.h>
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#include <osmocom/sigtran/sccp_helpers.h>
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#include <osmocom/sigtran/protocol/sua.h>
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#include <osmocom/sigtran/protocol/m3ua.h>
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static void *tall_stp_ctx;
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/* we only use logging sub-systems of the various libraries so far */
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static const struct log_info_cat log_info_cat[] = {
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};
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static const struct log_info log_info = {
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.cat = log_info_cat,
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.num_cat = ARRAY_SIZE(log_info_cat),
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};
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static const char stp_copyright[] =
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"Copyright (C) 2015-2020 by Harald Welte <laforge@gnumonks.org>\r\n"
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"Contributions by Holger Freyther, Neels Hofmeyr, Pau Espin, Vadim Yanitskiy\r\n"
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"License GPLv2+: GNU GPL Version 2 or later <http://gnu.org/licenses/gpl-2.0.html>\r\n"
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"This is free software: you are free to change and redistribute it.\r\n"
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"There is NO WARRANTY, to the extent permitted by law.\r\n\r\n"
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"Free Software lives by contribution. If you use this, please contribute!\r\n";
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static struct vty_app_info vty_info = {
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.name = "OsmoSTP",
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.copyright = stp_copyright,
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.version = PACKAGE_VERSION,
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.go_parent_cb = osmo_ss7_vty_go_parent,
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.is_config_node = osmo_ss7_is_config_node,
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};
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static struct {
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bool daemonize;
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const char *config_file;
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} cmdline_config = {
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.daemonize = false,
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.config_file = "osmo-stp.cfg",
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};
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static void print_help(void)
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{
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printf(" -h --help This text.\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. Default: ./osmo-stp.cfg\n");
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printf(" -V --version Print the version of OsmoSTP\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 const struct option long_options[] = {
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{ "help", 0, 0, 'h' },
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{ "daemonize", 0, 0, 'D' },
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{ "config-file", 1, 0, 'c' },
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{ "version", 0, 0, 'V' },
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{ NULL, 0, 0, 0 }
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};
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c = getopt_long(argc, argv, "hDc:V", 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_help();
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exit(0);
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break;
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case 'D':
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cmdline_config.daemonize = true;
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break;
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case 'c':
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cmdline_config.config_file = optarg;
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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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default:
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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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if (argc > optind) {
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fprintf(stderr, "Unsupported positional arguments in command line\n");
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exit(2);
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}
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}
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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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case SIGTERM:
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/* FIXME: handle the signal somewhere else and gracefully shut down
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* SIGTRAN links
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osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL);
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sleep(1); */
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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_stp_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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int main(int argc, char **argv)
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{
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int rc;
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tall_stp_ctx = talloc_named_const(NULL, 1, "osmo-stp");
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msgb_talloc_ctx_init(tall_stp_ctx, 0);
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osmo_init_logging2(tall_stp_ctx, &log_info);
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osmo_stats_init(tall_stp_ctx);
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vty_info.tall_ctx = tall_stp_ctx;
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vty_init(&vty_info);
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handle_options(argc, argv);
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fputs(stp_copyright, stdout);
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fputs("\n", stdout);
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OSMO_ASSERT(osmo_ss7_init() == 0);
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osmo_fsm_log_addr(false);
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logging_vty_add_cmds();
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osmo_stats_vty_add_cmds();
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osmo_ss7_vty_init_sg(tall_stp_ctx);
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osmo_sccp_vty_init();
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osmo_cpu_sched_vty_init(tall_stp_ctx);
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osmo_fsm_vty_add_cmds();
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osmo_talloc_vty_add_cmds();
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rc = vty_read_config_file(cmdline_config.config_file, NULL);
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if (rc < 0) {
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fprintf(stderr, "Failed to parse the config file '%s'\n",
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cmdline_config.config_file);
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exit(1);
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}
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rc = telnet_init_dynif(tall_stp_ctx, NULL, vty_get_bind_addr(), OSMO_VTY_PORT_STP);
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if (rc < 0) {
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perror("Error binding VTY port\n");
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exit(1);
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}
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signal(SIGINT, &signal_handler);
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signal(SIGTERM, &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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if (cmdline_config.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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rc = osmo_select_main(0);
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if (rc < 0)
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exit(3);
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}
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}
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