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/*
* osmo-e1d.c
*
* (C) 2019-2022 by Sylvain Munaut <tnt@246tNt.com>
* (C) 2019-2022 by Harald Welte <laforge@osmocom.org>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <errno.h>
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#define _GNU_SOURCE
#include <getopt.h>
#include <talloc.h>
#include <osmocom/core/application.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
#include <osmocom/core/stats.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/vty/stats.h>
#include <osmocom/vty/misc.h>
#include <osmocom/vty/cpu_sched_vty.h>
#include <osmocom/e1d/proto_srv.h>
#include <osmocom/e1d/proto.h>
#include "e1d.h"
#include <osmocom/octoi/octoi.h>
#include "usb.h"
#include "log.h"
#ifndef OSMO_VTY_PORT_E1D
#define OSMO_VTY_PORT_E1D 4269
#endif
extern struct osmo_e1dp_server_handler e1d_ctl_handlers[];
static const char *g_config_file = "osmo-e1d.cfg";
static void *g_e1d_ctx = NULL;
static int g_shutdown = 0;
static void sig_handler(int signo)
{
fprintf(stdout, "signal %d received\n", signo);
switch (signo) {
case SIGINT:
case SIGTERM:
fprintf(stdout, "shutting down\n");
g_shutdown = 1;
break;
case SIGABRT:
case SIGUSR1:
talloc_report(g_e1d_ctx, stderr);
talloc_report_full(g_e1d_ctx, stderr);
break;
case SIGUSR2:
talloc_report_full(g_e1d_ctx, stderr);
break;
default:
break;
}
}
static struct vty_app_info vty_info = {
.name = "osmo-e1d",
.version = PACKAGE_VERSION,
.go_parent_cb = e1d_vty_go_parent,
.copyright =
"(C) 2019-2022 by Sylvain Munaut, Harald Welte and contributors\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 to change and redistribute it.\r\n"
"There is NO WARRANTY, to the extent permitted by law.\r\n",
};
static void print_help(void)
{
printf(" Some useful help...\n");
printf(" -h --help This text.\n");
printf(" -d --debug option --debug=DE1D:DXFR enable debugging.\n");
printf(" -c --config-file filename The config file to use.\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'},
{"debug", 1, 0, 'd'},
{"config-file", 1, 0, 'c'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hd:c:", long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'h':
print_help();
exit(0);
break;
case 'd':
log_parse_category_mask(osmo_stderr_target, optarg);
break;
case 'c':
g_config_file = optarg;
break;
default:
fprintf(stderr, "Error in command line options. Exiting.\n");
exit(-1);
}
}
if (argc > optind) {
fprintf(stderr, "Unsupported positional arguments on command line\n");
exit(2);
}
}
int main(int argc, char *argv[])
{
struct e1_daemon *e1d = NULL;
struct osmo_e1dp_server *srv = NULL;
struct sched_param sp;
int rv;
/* talloc init */
g_e1d_ctx = talloc_named_const(NULL, 0, "osmo-e1d");
msgb_talloc_ctx_init(g_e1d_ctx, 0);
vty_info.tall_ctx = g_e1d_ctx;
/* logging init */
osmo_init_logging2(g_e1d_ctx, &log_info);
/* signals init */
signal(SIGINT, &sig_handler);
signal(SIGTERM, &sig_handler);
signal(SIGABRT, &sig_handler);
signal(SIGUSR1, &sig_handler);
signal(SIGUSR2, &sig_handler);
osmo_init_ignore_signals();
/* rt prio */
memset(&sp, 0x00, sizeof(sp));
sp.sched_priority = 50;
rv = sched_setscheduler(0, SCHED_RR, &sp);
if (rv != 0) {
LOGP(DE1D, LOGL_ERROR, "Failed to set Real-Time priority. USB comms might be unstable.\n");
perror("sched_setscheduler");
}
/* main state */
e1d = talloc_zero(g_e1d_ctx, struct e1_daemon);
OSMO_ASSERT(e1d);
INIT_LLIST_HEAD(&e1d->interfaces);
vty_init(&vty_info);
logging_vty_add_cmds();
e1d_vty_init(e1d);
octoi_init(g_e1d_ctx, e1d, &e1d_octoi_ops);
rate_ctr_init(e1d);
osmo_stats_init(e1d);
osmo_stat_item_init(e1d);
osmo_stats_vty_add_cmds();
osmo_talloc_vty_add_cmds();
osmo_fsm_vty_add_cmds();
osmo_cpu_sched_vty_init(e1d);
handle_options(argc, argv);
rv = vty_read_config_file(g_config_file, NULL);
if (rv < 0) {
LOGP(DE1D, LOGL_FATAL, "Failed to parse the config file '%s'\n", g_config_file);
exit(2);
}
rv = telnet_init_dynif(g_e1d_ctx, e1d, vty_get_bind_addr(), OSMO_VTY_PORT_E1D);
if (rv != 0) {
LOGP(DE1D, LOGL_FATAL, "Failed to bind VTY interface to %s:%u\n",
vty_get_bind_addr(), OSMO_VTY_PORT_E1D);
exit(1);
}
/* probe devices */
rv = e1_usb_probe(e1d);
if (rv != 0) {
LOGP(DE1D, LOGL_ERROR, "Failed to prove usb devices\n");
}
/* server init */
srv = osmo_e1dp_server_create(g_e1d_ctx, E1DP_DEFAULT_SOCKET, e1d_ctl_handlers, e1d);
OSMO_ASSERT(srv);
/* main loop */
while (!g_shutdown) {
osmo_select_main(0);
}
/* cleanup */
if (srv)
osmo_e1dp_server_destroy(srv);
talloc_free(e1d);
return 0;
}
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