Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 1 | /* |
| 2 | * OsmoGGSN - Gateway GPRS Support Node |
| 3 | * Copyright (C) 2002, 2003, 2004 Mondru AB. |
| 4 | * Copyright (C) 2017-2019 by Harald Welte <laforge@gnumonks.org> |
| 5 | * Copyright (C) 2019 sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| 6 | * |
| 7 | * The contents of this file may be used under the terms of the GNU |
| 8 | * General Public License Version 2, provided that the above copyright |
| 9 | * notice and this permission notice is included in all copies or |
| 10 | * substantial portions of the software. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include "../config.h" |
| 15 | |
| 16 | #ifdef HAVE_STDINT_H |
| 17 | #include <stdint.h> |
| 18 | #endif |
| 19 | |
| 20 | #include <getopt.h> |
| 21 | #include <ctype.h> |
| 22 | #include <signal.h> |
| 23 | #include <stdio.h> |
| 24 | #include <string.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <unistd.h> |
| 27 | #include <inttypes.h> |
| 28 | #include <errno.h> |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/ioctl.h> |
| 31 | |
| 32 | #include <osmocom/core/application.h> |
| 33 | #include <osmocom/core/select.h> |
| 34 | #include <osmocom/core/stats.h> |
| 35 | #include <osmocom/core/rate_ctr.h> |
| 36 | #include <osmocom/core/timer.h> |
Pau Espin Pedrol | 9f1f747 | 2022-11-02 19:52:19 +0100 | [diff] [blame] | 37 | #include <osmocom/core/tdef.h> |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 38 | #include <osmocom/core/utils.h> |
| 39 | #include <osmocom/ctrl/control_if.h> |
| 40 | #include <osmocom/ctrl/control_cmd.h> |
| 41 | #include <osmocom/ctrl/control_vty.h> |
| 42 | #include <osmocom/ctrl/ports.h> |
| 43 | #include <osmocom/vty/telnet_interface.h> |
| 44 | #include <osmocom/vty/logging.h> |
| 45 | #include <osmocom/vty/stats.h> |
| 46 | #include <osmocom/vty/ports.h> |
| 47 | #include <osmocom/vty/command.h> |
| 48 | #include <osmocom/vty/misc.h> |
Pau Espin Pedrol | aedae4c | 2020-08-18 12:44:54 +0200 | [diff] [blame] | 49 | #include <osmocom/vty/cpu_sched_vty.h> |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 50 | |
| 51 | #include "ggsn.h" |
| 52 | |
| 53 | void *tall_ggsn_ctx; |
| 54 | |
| 55 | static int end = 0; |
| 56 | static int daemonize = 0; |
| 57 | struct ctrl_handle *g_ctrlh; |
| 58 | |
| 59 | struct ul255_t qos; |
| 60 | struct ul255_t apn; |
| 61 | |
| 62 | static char *config_file = "osmo-ggsn.cfg"; |
| 63 | |
Pau Espin Pedrol | 9f1f747 | 2022-11-02 19:52:19 +0100 | [diff] [blame] | 64 | struct osmo_tdef_group ggsn_tdef_group[] = { |
| 65 | {.name = "gtp", .tdefs = gtp_T_defs, .desc = "GTP (libgtp) timers" }, |
| 66 | { } |
| 67 | }; |
| 68 | |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 69 | /* To exit gracefully. Used with GCC compilation flag -pg and gprof */ |
| 70 | static void signal_handler(int s) |
| 71 | { |
| 72 | LOGP(DGGSN, LOGL_NOTICE, "signal %d received\n", s); |
| 73 | switch (s) { |
| 74 | case SIGINT: |
| 75 | case SIGTERM: |
| 76 | LOGP(DGGSN, LOGL_NOTICE, "SIGINT received, shutting down\n"); |
| 77 | end = 1; |
| 78 | break; |
| 79 | case SIGABRT: |
Pau Espin Pedrol | 12304c0 | 2020-11-25 18:49:16 +0100 | [diff] [blame] | 80 | /* in case of abort, we want to obtain a talloc report and |
| 81 | * then run default SIGABRT handler, who will generate coredump |
| 82 | * and abort the process. abort() should do this for us after we |
| 83 | * return, but program wouldn't exit if an external SIGABRT is |
| 84 | * received. |
| 85 | */ |
| 86 | talloc_report(tall_vty_ctx, stderr); |
| 87 | talloc_report_full(tall_ggsn_ctx, stderr); |
| 88 | signal(SIGABRT, SIG_DFL); |
| 89 | raise(SIGABRT); |
| 90 | break; |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 91 | case SIGUSR1: |
| 92 | talloc_report(tall_vty_ctx, stderr); |
| 93 | talloc_report_full(tall_ggsn_ctx, stderr); |
| 94 | break; |
| 95 | case SIGUSR2: |
| 96 | talloc_report_full(tall_vty_ctx, stderr); |
| 97 | break; |
| 98 | default: |
| 99 | break; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | static void print_usage() |
| 104 | { |
| 105 | printf("Usage: osmo-ggsn [-h] [-D] [-c configfile] [-V]\n"); |
| 106 | } |
| 107 | |
| 108 | static void print_help() |
| 109 | { |
| 110 | printf( " Some useful help...\n" |
| 111 | " -h --help This help text\n" |
| 112 | " -D --daemonize Fork the process into a background daemon\n" |
| 113 | " -c --config-file filename The config file to use\n" |
| 114 | " -V --version Print the version of OsmoGGSN\n" |
| 115 | ); |
Harald Welte | 67a3c83 | 2021-02-23 17:07:03 +0100 | [diff] [blame] | 116 | |
| 117 | printf("\nVTY reference generation:\n"); |
| 118 | printf(" --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n"); |
| 119 | printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n"); |
| 120 | } |
| 121 | |
| 122 | static void handle_long_options(const char *prog_name, const int long_option) |
| 123 | { |
| 124 | static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT; |
| 125 | |
| 126 | switch (long_option) { |
| 127 | case 1: |
| 128 | vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg); |
| 129 | if (vty_ref_mode < 0) { |
| 130 | fprintf(stderr, "%s: Unknown VTY reference generation " |
| 131 | "mode '%s'\n", prog_name, optarg); |
| 132 | exit(2); |
| 133 | } |
| 134 | break; |
| 135 | case 2: |
| 136 | fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n", |
| 137 | get_value_string(vty_ref_gen_mode_names, vty_ref_mode), |
| 138 | get_value_string(vty_ref_gen_mode_desc, vty_ref_mode)); |
| 139 | vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode); |
| 140 | exit(0); |
| 141 | default: |
| 142 | fprintf(stderr, "%s: error parsing cmdline options\n", prog_name); |
| 143 | exit(2); |
| 144 | } |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | static void handle_options(int argc, char **argv) |
| 148 | { |
| 149 | while (1) { |
| 150 | int option_index = 0, c; |
Harald Welte | 67a3c83 | 2021-02-23 17:07:03 +0100 | [diff] [blame] | 151 | static int long_option = 0; |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 152 | static struct option long_options[] = { |
| 153 | { "help", 0, 0, 'h' }, |
| 154 | { "daemonize", 0, 0, 'D' }, |
| 155 | { "config-file", 1, 0, 'c' }, |
| 156 | { "version", 0, 0, 'V' }, |
Harald Welte | 67a3c83 | 2021-02-23 17:07:03 +0100 | [diff] [blame] | 157 | { "vty-ref-mode", 1, &long_option, 1 }, |
| 158 | { "vty-ref-xml", 0, &long_option, 2 }, |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 159 | { 0, 0, 0, 0 } |
| 160 | }; |
| 161 | |
| 162 | c = getopt_long(argc, argv, "hdc:V", long_options, &option_index); |
| 163 | if (c == -1) |
| 164 | break; |
| 165 | |
| 166 | switch (c) { |
Harald Welte | 67a3c83 | 2021-02-23 17:07:03 +0100 | [diff] [blame] | 167 | case 0: |
| 168 | handle_long_options(argv[0], long_option); |
| 169 | break; |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 170 | case 'h': |
| 171 | print_usage(); |
| 172 | print_help(); |
| 173 | exit(0); |
| 174 | case 'D': |
| 175 | daemonize = 1; |
| 176 | break; |
| 177 | case 'c': |
| 178 | config_file = optarg; |
| 179 | break; |
| 180 | case 'V': |
| 181 | print_version(1); |
| 182 | exit(0); |
| 183 | break; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | int main(int argc, char **argv) |
| 189 | { |
| 190 | struct ggsn_ctx *ggsn; |
| 191 | int rc; |
| 192 | |
| 193 | tall_ggsn_ctx = talloc_named_const(NULL, 0, "OsmoGGSN"); |
| 194 | msgb_talloc_ctx_init(tall_ggsn_ctx, 0); |
| 195 | g_vty_info.tall_ctx = tall_ggsn_ctx; |
| 196 | |
| 197 | /* Handle keyboard interrupt SIGINT */ |
| 198 | signal(SIGINT, &signal_handler); |
| 199 | signal(SIGTERM, &signal_handler); |
| 200 | signal(SIGABRT, &signal_handler); |
| 201 | signal(SIGUSR1, &signal_handler); |
| 202 | signal(SIGUSR2, &signal_handler); |
| 203 | |
| 204 | osmo_init_ignore_signals(); |
| 205 | osmo_init_logging2(tall_ggsn_ctx, &log_info); |
| 206 | osmo_stats_init(tall_ggsn_ctx); |
| 207 | |
| 208 | vty_init(&g_vty_info); |
| 209 | logging_vty_add_cmds(); |
| 210 | osmo_talloc_vty_add_cmds(); |
| 211 | osmo_stats_vty_add_cmds(); |
| 212 | ggsn_vty_init(); |
| 213 | ctrl_vty_init(tall_ggsn_ctx); |
Pau Espin Pedrol | aedae4c | 2020-08-18 12:44:54 +0200 | [diff] [blame] | 214 | osmo_cpu_sched_vty_init(tall_ggsn_ctx); |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 215 | |
| 216 | handle_options(argc, argv); |
| 217 | |
| 218 | rate_ctr_init(tall_ggsn_ctx); |
| 219 | |
| 220 | rc = vty_read_config_file(config_file, NULL); |
| 221 | if (rc < 0) { |
| 222 | fprintf(stderr, "Failed to open config file: '%s'\n", config_file); |
| 223 | exit(2); |
| 224 | } |
| 225 | |
arehbein | 97f60e3 | 2022-12-19 21:28:50 +0100 | [diff] [blame^] | 226 | rc = telnet_init_default(tall_ggsn_ctx, NULL, OSMO_VTY_PORT_GGSN); |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 227 | if (rc < 0) |
| 228 | exit(1); |
| 229 | |
Max | a727e6e | 2022-12-17 21:14:57 +0300 | [diff] [blame] | 230 | g_ctrlh = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_GGSN, NULL); |
Pau Espin Pedrol | 421f22e | 2019-08-20 12:52:13 +0200 | [diff] [blame] | 231 | if (!g_ctrlh) { |
| 232 | LOGP(DGGSN, LOGL_ERROR, "Failed to create CTRL interface.\n"); |
| 233 | exit(1); |
| 234 | } |
| 235 | |
| 236 | if (daemonize) { |
| 237 | rc = osmo_daemonize(); |
| 238 | if (rc < 0) { |
| 239 | perror("Error during daemonize"); |
| 240 | exit(1); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | #if 0 |
| 245 | /* qos */ |
| 246 | qos.l = 3; |
| 247 | qos.v[2] = (args_info.qos_arg) & 0xff; |
| 248 | qos.v[1] = ((args_info.qos_arg) >> 8) & 0xff; |
| 249 | qos.v[0] = ((args_info.qos_arg) >> 16) & 0xff; |
| 250 | #endif |
| 251 | |
| 252 | /* Main select loop */ |
| 253 | while (!end) { |
| 254 | osmo_select_main(0); |
| 255 | } |
| 256 | |
| 257 | llist_for_each_entry(ggsn, &g_ggsn_list, list) |
| 258 | ggsn_stop(ggsn); |
| 259 | |
| 260 | return 0; |
| 261 | } |