372 lines
9.1 KiB
C
372 lines
9.1 KiB
C
/* Main method of the layer2/3 stack */
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/* (C) 2010 by Holger Hans Peter Freyther
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* (C) 2010 by Harald Welte <laforge@gnumonks.org>
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*
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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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*/
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#include <osmocom/bb/common/osmocom_data.h>
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#include <osmocom/bb/common/logging.h>
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#include <osmocom/bb/common/l23_app.h>
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#include <osmocom/bb/common/vty.h>
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#include <osmocom/bb/mobile/app_mobile.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/gsmtap_util.h>
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#include <osmocom/core/gsmtap.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/vty/vty.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 <osmocom/vty/ports.h>
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#include <arpa/inet.h>
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#define _GNU_SOURCE
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#include <getopt.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <time.h>
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#include <libgen.h>
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#include "config.h"
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void *l23_ctx = NULL;
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struct l23_global_config l23_cfg;
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struct llist_head ms_list;
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static char *gsmtap_ip = 0;
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static const char *custom_cfg_file = NULL;
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static char *config_file = NULL;
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char *config_dir = NULL;
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int daemonize = 0;
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int quit = 0;
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int (*l23_app_start)(void) = NULL;
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int (*l23_app_work)(void) = NULL;
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int (*l23_app_exit)(void) = NULL;
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int mobile_delete(struct osmocom_ms *ms, int force);
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int mobile_signal_cb(unsigned int subsys, unsigned int signal,
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void *handler_data, void *signal_data);
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int mobile_work(struct osmocom_ms *ms);
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int mobile_exit(struct osmocom_ms *ms, int force);
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const char *debug_default =
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"DCS:DNB:DPLMN:DRR:DMM:DSIM:DCC:DMNCC:DSS:DLSMS:DPAG:DSUM:DSAP:DGPS:DMOB:DPRIM:DLUA:DGAPK";
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static void print_usage(const char *app)
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{
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printf("Usage: %s\n", app);
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}
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static void print_help(void)
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{
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printf(" Some help...\n");
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printf(" -h --help this text\n");
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printf(" -i --gsmtap-ip The destination IP used for GSMTAP.\n");
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printf(" -d --debug Change debug flags. default: %s\n",
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debug_default);
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printf(" -D --daemonize Run as daemon\n");
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printf(" -c --config-file filename The config file to use.\n");
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}
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static int 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 struct option long_options[] = {
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{"help", 0, 0, 'h'},
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{"gsmtap-ip", 1, 0, 'i'},
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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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/* DEPRECATED options, to be removed */
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{"mncc-sock", 0, 0, 'm'},
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{"vty-ip", 1, 0, 'u'},
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{"vty-port", 1, 0, 'v'},
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{0, 0, 0, 0},
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};
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c = getopt_long(argc, argv, "hi:u:c:v:d:Dm",
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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(argv[0]);
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print_help();
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exit(0);
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break;
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case 'i':
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gsmtap_ip = optarg;
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break;
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case 'c':
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custom_cfg_file = optarg;
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break;
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case 'd':
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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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daemonize = 1;
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break;
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/* DEPRECATED options, to be removed */
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case 'm':
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fprintf(stderr, "Option 'm' is deprecated! "
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"Please use the configuration file "
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"in order to change the MNCC handler.\n");
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return -EINVAL;
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case 'u':
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case 'v':
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fprintf(stderr, "Both 'u' and 'v' options are "
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"deprecated! Please use the configuration file "
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"in order to set VTY bind address.\n");
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/* fall-thru */
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default:
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/* Unknown parameter passed */
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return -EINVAL;
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}
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}
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return 0;
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}
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void sighandler(int sigset)
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{
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static uint8_t _quit = 1, count_int = 0;
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if (sigset == SIGHUP || sigset == SIGPIPE)
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return;
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fprintf(stderr, "\nSignal %d received.\n", sigset);
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switch (sigset) {
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case SIGINT:
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/* The first signal causes initiating of shutdown with detach
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* procedure. The second signal causes initiating of shutdown
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* without detach procedure. The third signal will exit process
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* immediately. (in case it hangs)
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*/
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if (count_int == 0) {
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fprintf(stderr, "Performing shutdown with clean "
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"detach, if possible...\n");
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osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN,
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NULL);
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count_int = 1;
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break;
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}
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if (count_int == 2) {
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fprintf(stderr, "Unclean exit, please turn off phone "
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"to be sure it is not transmitting!\n");
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exit(0);
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}
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/* fall through */
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case SIGTSTP:
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count_int = 2;
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fprintf(stderr, "Performing shutdown without detach...\n");
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osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN, &_quit);
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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 and
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* then run default SIGABRT handler, who will generate coredump
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* and abort the process. abort() should do this for us after we
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* return, but program wouldn't exit if an external SIGABRT is
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* received.
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*/
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talloc_report_full(l23_ctx, stderr);
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signal(SIGABRT, SIG_DFL);
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raise(SIGABRT);
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break;
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case SIGUSR1:
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case SIGUSR2:
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talloc_report_full(l23_ctx, stderr);
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break;
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}
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}
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static void print_copyright(void)
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{
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struct l23_app_info *app;
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app = l23_app_info();
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printf("%s"
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"%s\n"
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"License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>\n"
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"This is free software: you are free to change and redistribute it.\n"
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"There is NO WARRANTY, to the extent permitted by law.\n\n",
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app && app->copyright ? app->copyright : "",
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app && app->contribution ? app->contribution : "");
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}
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static int _vty_init(struct l23_app_info *app)
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{
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static struct vty_app_info l23_vty_info = {
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.name = "OsmocomBB",
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.version = PACKAGE_VERSION,
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};
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int rc;
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OSMO_ASSERT(app->vty_info);
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app->vty_info->tall_ctx = l23_ctx;
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vty_init(app->vty_info ? : &l23_vty_info);
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logging_vty_add_cmds();
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if (app->vty_init)
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app->vty_init();
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if (config_file) {
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LOGP(DLGLOBAL, LOGL_INFO, "Using configuration from '%s'\n", config_file);
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l23_vty_reading = true;
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rc = vty_read_config_file(config_file, NULL);
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l23_vty_reading = false;
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if (rc < 0) {
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LOGP(DLGLOBAL, LOGL_FATAL,
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"Failed to parse the configuration file '%s'\n", config_file);
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return rc;
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}
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}
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rc = telnet_init_default(l23_ctx, NULL, OSMO_VTY_PORT_BB);
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if (rc < 0) {
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LOGP(DMOB, LOGL_FATAL, "Cannot init VTY on %s port %u: %s\n",
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vty_get_bind_addr(), OSMO_VTY_PORT_BB, strerror(errno));
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return rc;
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}
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return rc;
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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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struct l23_app_info *app;
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unsigned int app_supp_opt = 0x00;
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print_copyright();
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srand(time(NULL));
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INIT_LLIST_HEAD(&ms_list);
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l23_ctx = talloc_named_const(NULL, 1, "layer2 context");
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/* TODO: measure and choose a proper pool size */
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msgb_talloc_ctx_init(l23_ctx, 0);
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/* Init default stderr logging */
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osmo_init_logging2(l23_ctx, &log_info);
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rc = l23_app_init();
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if (rc < 0) {
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fprintf(stderr, "Failed during l23_app_init()\n");
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exit(1);
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}
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app = l23_app_info();
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if (app && app->cfg_supported != NULL)
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app_supp_opt = app->cfg_supported();
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rc = handle_options(argc, argv);
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if (rc) { /* Abort in case of parsing errors */
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fprintf(stderr, "Error in command line options. Exiting.\n");
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return 1;
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}
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if (custom_cfg_file) {
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/* Use full path provided by user */
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config_file = talloc_strdup(l23_ctx, custom_cfg_file);
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} else {
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/* Obtain the user's home directory path */
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const char *home_dir = getenv("HOME");
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if (!home_dir)
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home_dir = "~";
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/* Concatenate it with default config path */
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config_file = talloc_asprintf(l23_ctx, "%s/%s",
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home_dir, ".osmocom/bb/mobile.cfg");
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}
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/* save the config file directory name */
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config_dir = talloc_strdup(l23_ctx, config_file);
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config_dir = dirname(config_dir);
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if (app_supp_opt & L23_OPT_VTY) {
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if (_vty_init(app) < 0)
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exit(1);
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}
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if (gsmtap_ip) {
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l23_cfg.gsmtap_inst = gsmtap_source_init(gsmtap_ip, GSMTAP_UDP_PORT, 1);
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if (!l23_cfg.gsmtap_inst) {
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fprintf(stderr, "Failed during gsmtap_init()\n");
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exit(1);
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}
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gsmtap_source_add_sink(l23_cfg.gsmtap_inst);
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}
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if (l23_app_start) {
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rc = l23_app_start();
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if (rc < 0) {
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fprintf(stderr, "Failed during l23_app_start()\n");
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exit(1);
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}
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}
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signal(SIGINT, sighandler);
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signal(SIGTSTP, sighandler);
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signal(SIGHUP, sighandler);
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signal(SIGTERM, sighandler);
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signal(SIGPIPE, sighandler);
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signal(SIGABRT, sighandler);
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signal(SIGUSR1, sighandler);
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signal(SIGUSR2, sighandler);
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if (daemonize) {
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printf("Running as daemon\n");
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rc = osmo_daemonize();
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if (rc)
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fprintf(stderr, "Failed to run as daemon\n");
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}
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while (1) {
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l23_app_work();
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if (quit && llist_empty(&ms_list))
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break;
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osmo_select_main(0);
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}
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l23_app_exit();
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log_fini();
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talloc_free(config_file);
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talloc_free(config_dir);
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talloc_report_full(l23_ctx, stderr);
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signal(SIGINT, SIG_DFL);
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signal(SIGTSTP, SIG_DFL);
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signal(SIGHUP, SIG_DFL);
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signal(SIGTERM, SIG_DFL);
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signal(SIGPIPE, SIG_DFL);
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signal(SIGABRT, SIG_DFL);
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signal(SIGUSR1, SIG_DFL);
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signal(SIGUSR2, SIG_DFL);
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return 0;
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}
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