forked from cellular-infrastructure/osmo-bsc-nat
222 lines
5.5 KiB
C
222 lines
5.5 KiB
C
/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
|
|
* Author: Oliver Smith <osmith@sysmocom.de>
|
|
* 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/lienses/>.
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include <getopt.h>
|
|
#include <osmocom/core/application.h>
|
|
#include <osmocom/sigtran/osmo_ss7.h>
|
|
#include <osmocom/sigtran/sccp_sap.h>
|
|
#include <osmocom/vty/cpu_sched_vty.h>
|
|
#include <osmocom/vty/logging.h>
|
|
#include <osmocom/vty/misc.h>
|
|
#include <osmocom/vty/ports.h>
|
|
#include <osmocom/vty/telnet_interface.h>
|
|
#include <osmocom/bsc_nat/bsc_nat.h>
|
|
#include <osmocom/bsc_nat/bsc_nat_fsm.h>
|
|
#include <osmocom/bsc_nat/logging.h>
|
|
#include <osmocom/bsc_nat/msc.h>
|
|
#include <osmocom/bsc_nat/vty.h>
|
|
|
|
static const char *const copyright =
|
|
"OsmoBSCNAT - Osmocom BSC NAT\r\n"
|
|
"Copyright (C) 2021 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n"
|
|
"Author: Oliver Smith\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_bsc_nat_ctx;
|
|
struct bsc_nat *g_bsc_nat;
|
|
|
|
static struct vty_app_info vty_info = {
|
|
.name = "OsmoBSCNAT",
|
|
.version = PACKAGE_VERSION,
|
|
.go_parent_cb = osmo_ss7_vty_go_parent,
|
|
};
|
|
|
|
static struct {
|
|
const char *config_file;
|
|
} bsc_nat_cmdline_config = {
|
|
.config_file = "osmo-bsc-nat.cfg",
|
|
};
|
|
|
|
static void print_help()
|
|
{
|
|
printf("usage: osmo-bsc-nat <options>\n");
|
|
printf("\n");
|
|
printf("optional arguments:\n");
|
|
printf(" -h, --help show this help message and exit\n");
|
|
printf(" -c, --config-file the config file to use\n");
|
|
printf(" -V, --version show version number and exit\n");
|
|
}
|
|
|
|
static void handle_options(int argc, char **argv)
|
|
{
|
|
while (1) {
|
|
int idx = 0, c;
|
|
static const struct option long_options[] = {
|
|
{"help", 0, 0, 'h'},
|
|
{"config-file", 1, 0, 'c'},
|
|
{"version", 0, 0, 'V' },
|
|
{ 0, 0, 0, 0 },
|
|
};
|
|
|
|
c = getopt_long(argc, argv, "hc:V", long_options, &idx);
|
|
|
|
if (c == -1)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'h':
|
|
print_help();
|
|
exit(0);
|
|
break;
|
|
case 'c':
|
|
bsc_nat_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 main_vty_init(int argc, char **argv)
|
|
{
|
|
int rc;
|
|
|
|
vty_info.copyright = copyright;
|
|
vty_info.tall_ctx = tall_bsc_nat_ctx;
|
|
vty_init(&vty_info);
|
|
|
|
bsc_nat_vty_init();
|
|
|
|
logging_vty_add_cmds();
|
|
osmo_talloc_vty_add_cmds();
|
|
osmo_fsm_vty_add_cmds();
|
|
osmo_cpu_sched_vty_init(tall_bsc_nat_ctx);
|
|
osmo_ss7_vty_init_asp(NULL);
|
|
osmo_sccp_vty_init();
|
|
|
|
handle_options(argc, argv);
|
|
|
|
rc = vty_read_config_file(bsc_nat_cmdline_config.config_file, NULL);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Failed to parse the config file: '%s'\n",
|
|
bsc_nat_cmdline_config.config_file);
|
|
exit(1);
|
|
}
|
|
|
|
rc = telnet_init_dynif(tall_bsc_nat_ctx, g_bsc_nat, vty_get_bind_addr(), OSMO_VTY_PORT_BSC_NAT);
|
|
if (rc < 0) {
|
|
perror("Error binding VTY port");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
static void signal_handler(int signum)
|
|
{
|
|
fprintf(stdout, "signal %u received\n", signum);
|
|
|
|
switch (signum) {
|
|
case SIGINT:
|
|
case SIGTERM:
|
|
/* If SIGTERM was already sent before, just terminate immediately. */
|
|
if (osmo_select_shutdown_requested())
|
|
exit(-1);
|
|
osmo_select_shutdown_request();
|
|
break;
|
|
case SIGABRT:
|
|
/* in case of abort, we want to obtain a talloc report and
|
|
* then run default SIGABRT handler, who will generate coredump
|
|
* and abort the process. abort() should do this for us after we
|
|
* return, but program wouldn't exit if an external SIGABRT is
|
|
* received.
|
|
*/
|
|
talloc_report(tall_vty_ctx, stderr);
|
|
talloc_report_full(tall_bsc_nat_ctx, stderr);
|
|
signal(SIGABRT, SIG_DFL);
|
|
raise(SIGABRT);
|
|
break;
|
|
case SIGUSR1:
|
|
talloc_report(tall_vty_ctx, stderr);
|
|
talloc_report_full(tall_bsc_nat_ctx, stderr);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void signal_handler_init(void)
|
|
{
|
|
signal(SIGINT, &signal_handler);
|
|
signal(SIGTERM, &signal_handler);
|
|
signal(SIGABRT, &signal_handler);
|
|
signal(SIGUSR1, &signal_handler);
|
|
signal(SIGUSR2, &signal_handler);
|
|
osmo_init_ignore_signals();
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int rc;
|
|
|
|
talloc_enable_null_tracking();
|
|
tall_bsc_nat_ctx = talloc_named_const(NULL, 0, "bsc_nat");
|
|
|
|
rc = osmo_init_logging2(tall_bsc_nat_ctx, &bsc_nat_log_info);
|
|
if (rc < 0)
|
|
exit(1);
|
|
|
|
rc = osmo_ss7_init();
|
|
if (rc < 0)
|
|
exit(1);
|
|
|
|
g_bsc_nat = bsc_nat_alloc(tall_bsc_nat_ctx);
|
|
|
|
main_vty_init(argc, argv);
|
|
signal_handler_init();
|
|
|
|
bsc_nat_fsm_start(g_bsc_nat);
|
|
|
|
if (msc_alloc_from_addr_book() < 0)
|
|
exit(1);
|
|
|
|
while (!osmo_select_shutdown_done())
|
|
osmo_select_main_ctx(0);
|
|
|
|
bsc_nat_fsm_stop(g_bsc_nat);
|
|
|
|
talloc_report_full(g_bsc_nat, stderr);
|
|
bsc_nat_free(g_bsc_nat);
|
|
log_fini();
|
|
talloc_report_full(tall_bsc_nat_ctx, stderr);
|
|
talloc_free(tall_bsc_nat_ctx);
|
|
talloc_free(tall_vty_ctx);
|
|
talloc_report_full(NULL, stderr);
|
|
talloc_disable_null_tracking();
|
|
|
|
return 0;
|
|
}
|