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/* Osmocom STP (Signal Transfer Point) */
/* (C) 2015-2017 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <signal.h>
#include <osmocom/core/stats.h>
#include <osmocom/core/select.h>
#include <osmocom/core/signal.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/core/fsm.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/stats.h>
#include <osmocom/vty/command.h>
#include <osmocom/vty/ports.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/vty/misc.h>
#include <osmocom/sigtran/osmo_ss7.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/sccp_helpers.h>
#include <osmocom/sigtran/protocol/sua.h>
#include <osmocom/sigtran/protocol/m3ua.h>
static void *tall_stp_ctx;
/* we only use logging sub-systems of the various libraries so far */
static const struct log_info_cat log_info_cat[] = {
};
static const struct log_info log_info = {
.cat = log_info_cat,
.num_cat = ARRAY_SIZE(log_info_cat),
};
static const char stp_copyright[] =
"Copyright (C) 2015-2017 by Harald Welte <laforge@gnumonks.org>\r\n"
"Contributions by Holger Freyther, Neels Hofmeyr\r\n"
"License GPLv2+: GNU GPL Version 2 or later <http://gnu.org/licenses/gpl-2.0.html>\r\n"
"This is free software: you are free ot change and redistribute it.\r\n"
"There is NO WARRANTY, to the extent permitted by law.\r\n\r\n"
"Free Software lives by contribution. If you use this, please contribute!\r\n";
static struct vty_app_info vty_info = {
.name = "OsmoSTP",
.copyright = stp_copyright,
.version = PACKAGE_VERSION,
.go_parent_cb = osmo_ss7_vty_go_parent,
.is_config_node = osmo_ss7_is_config_node,
};
static struct {
bool daemonize;
const char *config_file;
} cmdline_config = {
.daemonize = false,
.config_file = "osmo-stp.cfg",
};
static void print_help(void)
{
printf(" -h --help This text.\n");
printf(" -D --daemonize Fork teh process into a background daemon\n");
printf(" -c --config-file filename The config file to use. Default: ./osmo-stp.cfg\n");
printf(" -V --version Print the version of OsmoSTP\n");
}
static void handle_options(int argc, char **argv)
{
while (1) {
int option_index = 0, c;
static const struct option long_options[] = {
{ "help", 0, 0, 'h' },
{ "daemonize", 0, 0, 'D' },
{ "config-file", 1, 0, 'c' },
{ "version", 0, 0, 'V' },
{ NULL, 0, 0, 0 }
};
c = getopt_long(argc, argv, "hDc:V", long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'h':
print_help();
exit(0);
break;
case 'D':
cmdline_config.daemonize = true;
break;
case 'c':
cmdline_config.config_file = optarg;
break;
case 'V':
print_version(1);
exit(0);
break;
default:
fprintf(stderr, "Error in command line options. Exiting\n");
exit(1);
break;
}
}
}
static void signal_handler(int signal)
{
fprintf(stdout, "signal %u received\n", signal);
switch (signal) {
case SIGINT:
case SIGTERM:
/* FIXME: handle the signal somewhere else and gracefully shut down
* SIGTRAN links
osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL);
sleep(1); */
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_stp_ctx, stderr);
break;
case SIGUSR2:
talloc_report_full(tall_vty_ctx, stderr);
break;
default:
break;
}
}
int main(int argc, char **argv)
{
int rc;
tall_stp_ctx = talloc_named_const(NULL, 1, "osmo-stp");
msgb_talloc_ctx_init(tall_stp_ctx, 0);
osmo_init_logging2(tall_stp_ctx, &log_info);
osmo_stats_init(tall_stp_ctx);
vty_info.tall_ctx = tall_stp_ctx;
vty_init(&vty_info);
handle_options(argc, argv);
fputs(stp_copyright, stdout);
fputs("\n", stdout);
osmo_ss7_init();
osmo_fsm_log_addr(false);
logging_vty_add_cmds(&log_info);
osmo_stats_vty_add_cmds();
osmo_ss7_vty_init_sg(tall_stp_ctx);
osmo_sccp_vty_init();
osmo_fsm_vty_add_cmds();
osmo_talloc_vty_add_cmds();
rc = vty_read_config_file(cmdline_config.config_file, NULL);
if (rc < 0) {
fprintf(stderr, "Failed to parse the config file '%s'\n",
cmdline_config.config_file);
exit(1);
}
osmo_ss7_bind_all_instances();
rc = telnet_init_dynif(tall_stp_ctx, NULL, vty_get_bind_addr(), OSMO_VTY_PORT_STP);
if (rc < 0) {
perror("Error binding VTY port\n");
exit(1);
}
signal(SIGINT, &signal_handler);
signal(SIGTERM, &signal_handler);
signal(SIGABRT, &signal_handler);
signal(SIGUSR1, &signal_handler);
signal(SIGUSR2, &signal_handler);
osmo_init_ignore_signals();
if (cmdline_config.daemonize) {
rc = osmo_daemonize();
if (rc < 0) {
perror("Error during daemonize");
exit(1);
}
}
while (1) {
rc = osmo_select_main(0);
if (rc < 0)
exit(3);
}
}
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