Neels Hofmeyr | c8a614d | 2015-09-24 17:32:30 +0200 | [diff] [blame] | 1 | /* GTP Hub main program */ |
| 2 | |
| 3 | /* (C) 2015 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * Author: Neels Hofmeyr |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU Affero General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU Affero General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Affero General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | */ |
| 21 | |
| 22 | #include <unistd.h> |
| 23 | #include <signal.h> |
| 24 | #include <string.h> |
| 25 | #include <errno.h> |
| 26 | |
| 27 | #define _GNU_SOURCE |
| 28 | #include <getopt.h> |
| 29 | |
| 30 | #include <osmocom/core/signal.h> |
| 31 | #include <osmocom/core/application.h> |
| 32 | #include <osmocom/core/logging.h> |
| 33 | #include <osmocom/core/utils.h> |
| 34 | #include <osmocom/core/rate_ctr.h> |
| 35 | |
| 36 | #include <osmocom/vty/logging.h> |
| 37 | #include <osmocom/vty/telnet_interface.h> |
| 38 | |
| 39 | #include <openbsc/debug.h> |
| 40 | #include <openbsc/gtphub.h> |
| 41 | #include <openbsc/vty.h> |
| 42 | |
| 43 | #include "../../bscconfig.h" |
| 44 | |
| 45 | #define LOGERR(fmt, args...) \ |
| 46 | LOGP(DGTPHUB, LOGL_ERROR, fmt, ##args) |
| 47 | |
| 48 | #define LOG(fmt, args...) \ |
| 49 | LOGP(DGTPHUB, LOGL_NOTICE, fmt, ##args) |
| 50 | |
| 51 | #ifndef OSMO_VTY_PORT_GTPHUB |
| 52 | /* should come from libosmocore */ |
| 53 | #define OSMO_VTY_PORT_GTPHUB 4253 |
| 54 | #endif |
| 55 | |
| 56 | extern void *osmo_gtphub_ctx; |
| 57 | |
| 58 | |
| 59 | const char *gtphub_copyright = |
| 60 | "Copyright (C) 2015 sysmocom s.f.m.c GmbH <info@sysmocom.de>\r\n" |
| 61 | "License AGPLv3+: GNU AGPL version 2 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n" |
| 62 | "This is free software: you are free to change and redistribute it.\r\n" |
| 63 | "There is NO WARRANTY, to the extent permitted by law.\r\n"; |
| 64 | |
| 65 | static struct log_info_cat gtphub_categories[] = { |
| 66 | [DGTPHUB] = { |
| 67 | .name = "DGTPHUB", |
| 68 | .description = "GTP Hub", |
| 69 | .color = "\033[1;33m", |
| 70 | .enabled = 1, .loglevel = LOGL_NOTICE, |
| 71 | }, |
| 72 | }; |
| 73 | |
| 74 | int gtphub_log_filter_fn(const struct log_context *ctx, |
| 75 | struct log_target *tar) |
| 76 | { |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | static const struct log_info gtphub_log_info = { |
| 81 | .filter_fn = gtphub_log_filter_fn, |
| 82 | .cat = gtphub_categories, |
| 83 | .num_cat = ARRAY_SIZE(gtphub_categories), |
| 84 | }; |
| 85 | |
| 86 | void log_cfg(struct gtphub_cfg *cfg) |
| 87 | { |
| 88 | struct gtphub_cfg_addr *a; |
| 89 | a = &cfg->to_sgsns[GTPH_PLANE_CTRL].bind; |
| 90 | LOG("to-SGSNs bind, Control: %s port %d\n", |
| 91 | a->addr_str, a->port); |
| 92 | a = &cfg->to_sgsns[GTPH_PLANE_USER].bind; |
| 93 | LOG("to-SGSNs bind, User: %s port %d\n", |
| 94 | a->addr_str, a->port); |
| 95 | a = &cfg->to_ggsns[GTPH_PLANE_CTRL].bind; |
| 96 | LOG("to-GGSNs bind, Control: %s port %d\n", |
| 97 | a->addr_str, a->port); |
| 98 | a = &cfg->to_ggsns[GTPH_PLANE_USER].bind; |
| 99 | LOG("to-GGSNs bind, User: %s port %d\n", |
| 100 | a->addr_str, a->port); |
| 101 | } |
| 102 | |
| 103 | static void signal_handler(int signal) |
| 104 | { |
| 105 | fprintf(stdout, "signal %u received\n", signal); |
| 106 | |
| 107 | switch (signal) { |
| 108 | case SIGINT: |
| 109 | osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL); |
| 110 | sleep(1); |
| 111 | exit(0); |
| 112 | break; |
| 113 | case SIGABRT: |
| 114 | /* in case of abort, we want to obtain a talloc report |
| 115 | * and then return to the caller, who will abort the process */ |
| 116 | case SIGUSR1: |
| 117 | case SIGUSR2: |
| 118 | talloc_report_full(osmo_gtphub_ctx, stderr); |
| 119 | break; |
| 120 | default: |
| 121 | break; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | extern int bsc_vty_go_parent(struct vty *vty); |
| 126 | |
| 127 | static struct vty_app_info vty_info = { |
| 128 | .name = "OsmoGTPhub", |
| 129 | .version = PACKAGE_VERSION, |
| 130 | .go_parent_cb = bsc_vty_go_parent, |
| 131 | .is_config_node = bsc_vty_is_config_node, |
| 132 | }; |
| 133 | |
| 134 | struct cmdline_cfg { |
| 135 | const char *config_file; |
| 136 | int daemonize; |
| 137 | }; |
| 138 | |
| 139 | static void print_help(struct cmdline_cfg *ccfg) |
| 140 | { |
| 141 | printf("gtphub commandline options\n"); |
| 142 | printf(" -h --help This text.\n"); |
| 143 | printf(" -D --daemonize Fork the process into a background daemon.\n"); |
| 144 | printf(" -d,--debug <cat> Enable Debugging for this category.\n"); |
| 145 | printf(" Pass '-d list' to get a category listing.\n"); |
| 146 | printf(" -s --disable-color"); |
| 147 | printf(" -c --config-file The config file to use [%s].\n", ccfg->config_file); |
| 148 | printf(" -e,--log-level <nr> Set a global log level.\n"); |
| 149 | } |
| 150 | |
| 151 | static void list_categories(void) |
| 152 | { |
| 153 | printf("Avaliable debug categories:\n"); |
| 154 | int i; |
| 155 | for (i = 0; i < gtphub_log_info.num_cat; ++i) { |
| 156 | if (!gtphub_log_info.cat[i].name) |
| 157 | continue; |
| 158 | |
| 159 | printf("%s\n", gtphub_log_info.cat[i].name); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | static void handle_options(struct cmdline_cfg *ccfg, int argc, char **argv) |
| 164 | { |
| 165 | while (1) { |
| 166 | int option_index = 0, c; |
| 167 | static struct option long_options[] = { |
| 168 | {"help", 0, 0, 'h'}, |
| 169 | {"debug", 1, 0, 'd'}, |
| 170 | {"daemonize", 0, 0, 'D'}, |
| 171 | {"config-file", 1, 0, 'c'}, |
| 172 | {"disable-color", 0, 0, 's'}, |
| 173 | {"timestamp", 0, 0, 'T'}, |
| 174 | {"log-level", 1, 0, 'e'}, |
| 175 | {NULL, 0, 0, 0} |
| 176 | }; |
| 177 | |
| 178 | c = getopt_long(argc, argv, "hd:Dc:sTe:", |
| 179 | long_options, &option_index); |
| 180 | if (c == -1) |
| 181 | break; |
| 182 | |
| 183 | switch (c) { |
| 184 | case 'h': |
| 185 | //print_usage(); |
| 186 | print_help(ccfg); |
| 187 | exit(0); |
| 188 | case 's': |
| 189 | log_set_use_color(osmo_stderr_target, 0); |
| 190 | break; |
| 191 | case 'd': |
| 192 | if (strcmp("list", optarg) == 0) { |
| 193 | list_categories(); |
| 194 | exit(0); |
| 195 | } else |
| 196 | log_parse_category_mask(osmo_stderr_target, optarg); |
| 197 | break; |
| 198 | case 'D': |
| 199 | ccfg->daemonize = 1; |
| 200 | break; |
| 201 | case 'c': |
| 202 | ccfg->config_file = optarg; |
| 203 | break; |
| 204 | case 'T': |
| 205 | log_set_print_timestamp(osmo_stderr_target, 1); |
| 206 | break; |
| 207 | case 'e': |
| 208 | log_set_log_level(osmo_stderr_target, atoi(optarg)); |
| 209 | break; |
| 210 | default: |
| 211 | /* ignore */ |
| 212 | break; |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | int main(int argc, char **argv) |
| 218 | { |
| 219 | int rc; |
| 220 | |
| 221 | osmo_gtphub_ctx = talloc_named_const(NULL, 0, "osmo_gtphub"); |
| 222 | |
| 223 | signal(SIGINT, &signal_handler); |
| 224 | signal(SIGABRT, &signal_handler); |
| 225 | signal(SIGUSR1, &signal_handler); |
| 226 | signal(SIGUSR2, &signal_handler); |
| 227 | osmo_init_ignore_signals(); |
| 228 | |
| 229 | osmo_init_logging(>phub_log_info); |
| 230 | |
| 231 | vty_info.copyright = gtphub_copyright; |
| 232 | vty_init(&vty_info); |
| 233 | logging_vty_add_cmds(>phub_log_info); |
| 234 | gtphub_vty_init(); |
| 235 | |
| 236 | rate_ctr_init(osmo_gtphub_ctx); |
| 237 | rc = telnet_init(osmo_gtphub_ctx, 0, OSMO_VTY_PORT_GTPHUB); |
| 238 | if (rc < 0) |
| 239 | exit(1); |
| 240 | |
| 241 | struct cmdline_cfg _ccfg; |
| 242 | struct cmdline_cfg *ccfg = &_ccfg; |
| 243 | memset(ccfg, '\0', sizeof(*ccfg)); |
| 244 | ccfg->config_file = "./gtphub.conf"; |
| 245 | |
| 246 | struct gtphub_cfg _cfg; |
| 247 | struct gtphub_cfg *cfg = &_cfg; |
| 248 | memset(cfg, '\0', sizeof(*cfg)); |
| 249 | |
| 250 | struct gtphub _hub; |
| 251 | struct gtphub *hub = &_hub; |
| 252 | |
| 253 | handle_options(ccfg, argc, argv); |
| 254 | |
| 255 | rc = gtphub_cfg_read(cfg, ccfg->config_file); |
| 256 | if (rc < 0) { |
| 257 | LOGP(DGTPHUB, LOGL_FATAL, "Cannot parse config file '%s'\n", ccfg->config_file); |
| 258 | exit(2); |
| 259 | } |
| 260 | |
| 261 | if (gtphub_start(hub, cfg) != 0) |
| 262 | return -1; |
| 263 | |
| 264 | log_cfg(cfg); |
| 265 | |
| 266 | if (ccfg->daemonize) { |
| 267 | rc = osmo_daemonize(); |
| 268 | if (rc < 0) { |
| 269 | LOGERR("Error during daemonize"); |
| 270 | exit(1); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | while (1) { |
| 275 | rc = osmo_select_main(0); |
| 276 | if (rc < 0) |
| 277 | exit(3); |
| 278 | } |
| 279 | |
| 280 | /* not reached */ |
| 281 | exit(0); |
| 282 | } |