283 lines
6.7 KiB
C
283 lines
6.7 KiB
C
/* GTP Hub main program */
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/* (C) 2015 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Neels Hofmeyr
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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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#include <unistd.h>
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#include <signal.h>
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#include <string.h>
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#include <errno.h>
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#define _GNU_SOURCE
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#include <getopt.h>
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#include <osmocom/core/signal.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/rate_ctr.h>
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#include <osmocom/vty/logging.h>
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#include <osmocom/vty/telnet_interface.h>
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#include <openbsc/debug.h>
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#include <openbsc/gtphub.h>
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#include <openbsc/vty.h>
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#include "../../bscconfig.h"
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#define LOGERR(fmt, args...) \
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LOGP(DGTPHUB, LOGL_ERROR, fmt, ##args)
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#define LOG(fmt, args...) \
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LOGP(DGTPHUB, LOGL_NOTICE, fmt, ##args)
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#ifndef OSMO_VTY_PORT_GTPHUB
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/* should come from libosmocore */
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#define OSMO_VTY_PORT_GTPHUB 4253
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#endif
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extern void *osmo_gtphub_ctx;
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const char *gtphub_copyright =
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"Copyright (C) 2015 sysmocom s.f.m.c GmbH <info@sysmocom.de>\r\n"
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"License AGPLv3+: GNU AGPL version 2 or later <http://gnu.org/licenses/agpl-3.0.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";
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static struct log_info_cat gtphub_categories[] = {
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[DGTPHUB] = {
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.name = "DGTPHUB",
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.description = "GTP Hub",
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.color = "\033[1;33m",
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.enabled = 1, .loglevel = LOGL_NOTICE,
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},
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};
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int gtphub_log_filter_fn(const struct log_context *ctx,
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struct log_target *tar)
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{
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return 0;
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}
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static const struct log_info gtphub_log_info = {
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.filter_fn = gtphub_log_filter_fn,
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.cat = gtphub_categories,
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.num_cat = ARRAY_SIZE(gtphub_categories),
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};
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void log_cfg(struct gtphub_cfg *cfg)
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{
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struct gtphub_cfg_addr *a;
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a = &cfg->to_sgsns[GTPH_PLANE_CTRL].bind;
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LOG("to-SGSNs bind, Control: %s port %d\n",
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a->addr_str, a->port);
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a = &cfg->to_sgsns[GTPH_PLANE_USER].bind;
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LOG("to-SGSNs bind, User: %s port %d\n",
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a->addr_str, a->port);
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a = &cfg->to_ggsns[GTPH_PLANE_CTRL].bind;
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LOG("to-GGSNs bind, Control: %s port %d\n",
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a->addr_str, a->port);
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a = &cfg->to_ggsns[GTPH_PLANE_USER].bind;
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LOG("to-GGSNs bind, User: %s port %d\n",
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a->addr_str, a->port);
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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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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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/* 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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case SIGUSR2:
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talloc_report_full(osmo_gtphub_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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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 = "OsmoGTPhub",
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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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struct cmdline_cfg {
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const char *config_file;
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int daemonize;
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};
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static void print_help(struct cmdline_cfg *ccfg)
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{
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printf("gtphub commandline options\n");
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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(" -d,--debug <cat> Enable Debugging for this category.\n");
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printf(" Pass '-d list' to get a category listing.\n");
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printf(" -s --disable-color");
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printf(" -c --config-file The config file to use [%s].\n", ccfg->config_file);
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printf(" -e,--log-level <nr> Set a global log level.\n");
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}
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static void list_categories(void)
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{
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printf("Avaliable debug categories:\n");
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int i;
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for (i = 0; i < gtphub_log_info.num_cat; ++i) {
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if (!gtphub_log_info.cat[i].name)
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continue;
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printf("%s\n", gtphub_log_info.cat[i].name);
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}
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}
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static void handle_options(struct cmdline_cfg *ccfg, 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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{"timestamp", 0, 0, 'T'},
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{"log-level", 1, 0, 'e'},
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{NULL, 0, 0, 0}
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};
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c = getopt_long(argc, argv, "hd:Dc:sTe:",
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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(ccfg);
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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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if (strcmp("list", optarg) == 0) {
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list_categories();
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exit(0);
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} else
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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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ccfg->daemonize = 1;
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break;
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case 'c':
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ccfg->config_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 'e':
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log_set_log_level(osmo_stderr_target, atoi(optarg));
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break;
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default:
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/* ignore */
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break;
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}
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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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osmo_gtphub_ctx = talloc_named_const(NULL, 0, "osmo_gtphub");
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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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osmo_init_logging(>phub_log_info);
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vty_info.copyright = gtphub_copyright;
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vty_init(&vty_info);
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logging_vty_add_cmds(>phub_log_info);
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gtphub_vty_init();
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rate_ctr_init(osmo_gtphub_ctx);
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rc = telnet_init(osmo_gtphub_ctx, 0, OSMO_VTY_PORT_GTPHUB);
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if (rc < 0)
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exit(1);
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struct cmdline_cfg _ccfg;
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struct cmdline_cfg *ccfg = &_ccfg;
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memset(ccfg, '\0', sizeof(*ccfg));
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ccfg->config_file = "./gtphub.conf";
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struct gtphub_cfg _cfg;
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struct gtphub_cfg *cfg = &_cfg;
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memset(cfg, '\0', sizeof(*cfg));
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struct gtphub _hub;
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struct gtphub *hub = &_hub;
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handle_options(ccfg, argc, argv);
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rc = gtphub_cfg_read(cfg, ccfg->config_file);
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if (rc < 0) {
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LOGP(DGTPHUB, LOGL_FATAL, "Cannot parse config file '%s'\n", ccfg->config_file);
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exit(2);
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}
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if (gtphub_start(hub, cfg) != 0)
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return -1;
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log_cfg(cfg);
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if (ccfg->daemonize) {
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rc = osmo_daemonize();
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if (rc < 0) {
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LOGERR("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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/* not reached */
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exit(0);
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}
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