| /* |
| * OsmoGGSN - Gateway GPRS Support Node |
| * Copyright (C) 2002, 2003, 2004 Mondru AB. |
| * Copyright (C) 2017-2019 by Harald Welte <laforge@gnumonks.org> |
| * Copyright (C) 2019 sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| * |
| * The contents of this file may be used under the terms of the GNU |
| * General Public License Version 2, provided that the above copyright |
| * notice and this permission notice is included in all copies or |
| * substantial portions of the software. |
| * |
| */ |
| |
| #include "../config.h" |
| |
| #ifdef HAVE_STDINT_H |
| #include <stdint.h> |
| #endif |
| |
| #include <getopt.h> |
| #include <ctype.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <inttypes.h> |
| #include <errno.h> |
| #include <sys/types.h> |
| #include <sys/ioctl.h> |
| |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/stats.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/core/timer.h> |
| #include <osmocom/core/tdef.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/ctrl/control_if.h> |
| #include <osmocom/ctrl/control_cmd.h> |
| #include <osmocom/ctrl/control_vty.h> |
| #include <osmocom/ctrl/ports.h> |
| #include <osmocom/vty/telnet_interface.h> |
| #include <osmocom/vty/logging.h> |
| #include <osmocom/vty/stats.h> |
| #include <osmocom/vty/ports.h> |
| #include <osmocom/vty/command.h> |
| #include <osmocom/vty/misc.h> |
| #include <osmocom/vty/cpu_sched_vty.h> |
| |
| #include "ggsn.h" |
| |
| void *tall_ggsn_ctx; |
| |
| static int end = 0; |
| static int daemonize = 0; |
| struct ctrl_handle *g_ctrlh; |
| |
| struct ul255_t qos; |
| struct ul255_t apn; |
| |
| static char *config_file = "osmo-ggsn.cfg"; |
| |
| struct osmo_tdef_group ggsn_tdef_group[] = { |
| {.name = "gtp", .tdefs = gtp_T_defs, .desc = "GTP (libgtp) timers" }, |
| { } |
| }; |
| |
| /* To exit gracefully. Used with GCC compilation flag -pg and gprof */ |
| static void signal_handler(int s) |
| { |
| LOGP(DGGSN, LOGL_NOTICE, "signal %d received\n", s); |
| switch (s) { |
| case SIGINT: |
| case SIGTERM: |
| LOGP(DGGSN, LOGL_NOTICE, "SIGINT received, shutting down\n"); |
| end = 1; |
| 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_ggsn_ctx, stderr); |
| signal(SIGABRT, SIG_DFL); |
| raise(SIGABRT); |
| break; |
| case SIGUSR1: |
| talloc_report(tall_vty_ctx, stderr); |
| talloc_report_full(tall_ggsn_ctx, stderr); |
| break; |
| case SIGUSR2: |
| talloc_report_full(tall_vty_ctx, stderr); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void print_usage() |
| { |
| printf("Usage: osmo-ggsn [-h] [-D] [-c configfile] [-V]\n"); |
| } |
| |
| static void print_help() |
| { |
| printf( " Some useful help...\n" |
| " -h --help This help text\n" |
| " -D --daemonize Fork the process into a background daemon\n" |
| " -c --config-file filename The config file to use\n" |
| " -V --version Print the version of OsmoGGSN\n" |
| ); |
| |
| printf("\nVTY reference generation:\n"); |
| printf(" --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n"); |
| printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n"); |
| } |
| |
| static void handle_long_options(const char *prog_name, const int long_option) |
| { |
| static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT; |
| |
| switch (long_option) { |
| case 1: |
| vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg); |
| if (vty_ref_mode < 0) { |
| fprintf(stderr, "%s: Unknown VTY reference generation " |
| "mode '%s'\n", prog_name, optarg); |
| exit(2); |
| } |
| break; |
| case 2: |
| fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n", |
| get_value_string(vty_ref_gen_mode_names, vty_ref_mode), |
| get_value_string(vty_ref_gen_mode_desc, vty_ref_mode)); |
| vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode); |
| exit(0); |
| default: |
| fprintf(stderr, "%s: error parsing cmdline options\n", prog_name); |
| exit(2); |
| } |
| } |
| |
| static void handle_options(int argc, char **argv) |
| { |
| while (1) { |
| int option_index = 0, c; |
| static int long_option = 0; |
| static struct option long_options[] = { |
| { "help", 0, 0, 'h' }, |
| { "daemonize", 0, 0, 'D' }, |
| { "config-file", 1, 0, 'c' }, |
| { "version", 0, 0, 'V' }, |
| { "vty-ref-mode", 1, &long_option, 1 }, |
| { "vty-ref-xml", 0, &long_option, 2 }, |
| { 0, 0, 0, 0 } |
| }; |
| |
| c = getopt_long(argc, argv, "hdc:V", long_options, &option_index); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 0: |
| handle_long_options(argv[0], long_option); |
| break; |
| case 'h': |
| print_usage(); |
| print_help(); |
| exit(0); |
| case 'D': |
| daemonize = 1; |
| break; |
| case 'c': |
| config_file = optarg; |
| break; |
| case 'V': |
| print_version(1); |
| exit(0); |
| break; |
| } |
| } |
| } |
| |
| int main(int argc, char **argv) |
| { |
| struct ggsn_ctx *ggsn; |
| int rc; |
| |
| tall_ggsn_ctx = talloc_named_const(NULL, 0, "OsmoGGSN"); |
| msgb_talloc_ctx_init(tall_ggsn_ctx, 0); |
| g_vty_info.tall_ctx = tall_ggsn_ctx; |
| |
| /* Handle keyboard interrupt SIGINT */ |
| signal(SIGINT, &signal_handler); |
| signal(SIGTERM, &signal_handler); |
| signal(SIGABRT, &signal_handler); |
| signal(SIGUSR1, &signal_handler); |
| signal(SIGUSR2, &signal_handler); |
| |
| osmo_init_ignore_signals(); |
| osmo_init_logging2(tall_ggsn_ctx, &log_info); |
| osmo_stats_init(tall_ggsn_ctx); |
| |
| vty_init(&g_vty_info); |
| logging_vty_add_cmds(); |
| osmo_talloc_vty_add_cmds(); |
| osmo_stats_vty_add_cmds(); |
| ggsn_vty_init(); |
| ctrl_vty_init(tall_ggsn_ctx); |
| osmo_cpu_sched_vty_init(tall_ggsn_ctx); |
| |
| handle_options(argc, argv); |
| |
| rate_ctr_init(tall_ggsn_ctx); |
| |
| rc = vty_read_config_file(config_file, NULL); |
| if (rc < 0) { |
| fprintf(stderr, "Failed to open config file: '%s'\n", config_file); |
| exit(2); |
| } |
| |
| rc = telnet_init_default(tall_ggsn_ctx, NULL, OSMO_VTY_PORT_GGSN); |
| if (rc < 0) |
| exit(1); |
| |
| g_ctrlh = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_GGSN, NULL); |
| if (!g_ctrlh) { |
| LOGP(DGGSN, LOGL_ERROR, "Failed to create CTRL interface.\n"); |
| exit(1); |
| } |
| |
| if (daemonize) { |
| rc = osmo_daemonize(); |
| if (rc < 0) { |
| perror("Error during daemonize"); |
| exit(1); |
| } |
| } |
| |
| #if 0 |
| /* qos */ |
| qos.l = 3; |
| qos.v[2] = (args_info.qos_arg) & 0xff; |
| qos.v[1] = ((args_info.qos_arg) >> 8) & 0xff; |
| qos.v[0] = ((args_info.qos_arg) >> 16) & 0xff; |
| #endif |
| |
| /* Main select loop */ |
| while (!end) { |
| osmo_select_main(0); |
| } |
| |
| llist_for_each_entry(ggsn, &g_ggsn_list, list) |
| ggsn_stop(ggsn); |
| |
| return 0; |
| } |