diff options
Diffstat (limited to 'src/gprs/sgsn_main.c')
-rw-r--r-- | src/gprs/sgsn_main.c | 536 |
1 files changed, 0 insertions, 536 deletions
diff --git a/src/gprs/sgsn_main.c b/src/gprs/sgsn_main.c deleted file mode 100644 index eef5f8f22..000000000 --- a/src/gprs/sgsn_main.c +++ /dev/null @@ -1,536 +0,0 @@ -/* GPRS SGSN Implementation */ - -/* (C) 2010 by Harald Welte <laforge@gnumonks.org> - * (C) 2010 by On-Waves - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * - */ - -#include <unistd.h> -#include <stdio.h> -#include <time.h> -#include <stdlib.h> -#include <string.h> -#include <getopt.h> -#include <errno.h> -#include <signal.h> -#include <sys/fcntl.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> - -#include <osmocom/core/application.h> -#include <osmocom/core/talloc.h> -#include <osmocom/core/select.h> -#include <osmocom/core/rate_ctr.h> -#include <osmocom/core/logging.h> -#include <osmocom/core/stats.h> - -#include <osmocom/gprs/gprs_ns.h> -#include <osmocom/gprs/gprs_bssgp.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/misc.h> - -#include <osmocom/ctrl/control_vty.h> - -#include <osmocom/sgsn/signal.h> -#include <osmocom/sgsn/debug.h> -#include <osmocom/sgsn/vty.h> -#include <osmocom/sgsn/sgsn.h> -#include <osmocom/sgsn/gprs_llc.h> -#include <osmocom/sgsn/gprs_gmm.h> -#include <osmocom/sgsn/gprs_ranap.h> - -#include <osmocom/ctrl/control_if.h> -#include <osmocom/ctrl/ports.h> - -#include <gtp.h> - -#include "../../bscconfig.h" - -#if BUILD_IU -#include <osmocom/sigtran/osmo_ss7.h> -#include <osmocom/sigtran/protocol/m3ua.h> -#include <osmocom/ranap/iu_client.h> -#endif - -#define _GNU_SOURCE -#include <getopt.h> - -void *tall_sgsn_ctx; -struct ctrl_handle *g_ctrlh; - -struct gprs_ns_inst *sgsn_nsi; -static int daemonize = 0; -const char *openbsc_copyright = - "Copyright (C) 2010 Harald Welte and On-Waves\r\n" - "License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n" - "This is free software: you are free to change and redistribute it.\r\n" - "There is NO WARRANTY, to the extent permitted by law.\r\n"; - -#define CONFIG_FILE_DEFAULT "osmo-sgsn.cfg" -#define CONFIG_FILE_LEGACY "osmo_sgsn.cfg" - - -struct sgsn_instance *sgsn; - -/* call-back function for the NS protocol */ -static int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, - struct msgb *msg, uint16_t bvci) -{ - int rc = 0; - - switch (event) { - case GPRS_NS_EVT_UNIT_DATA: - /* hand the message into the BSSGP implementation */ - rc = bssgp_rcvmsg(msg); - break; - default: - LOGP(DGPRS, LOGL_ERROR, "SGSN: Unknown event %u from NS\n", event); - if (msg) - msgb_free(msg); - rc = -EIO; - break; - } - return rc; -} - -/* call-back function for the BSSGP protocol */ -int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) -{ - struct osmo_bssgp_prim *bp; - bp = container_of(oph, struct osmo_bssgp_prim, oph); - - switch (oph->sap) { - case SAP_BSSGP_LL: - switch (oph->primitive) { - case PRIM_BSSGP_UL_UD: - return gprs_llc_rcvmsg(oph->msg, bp->tp); - } - break; - case SAP_BSSGP_GMM: - switch (oph->primitive) { - case PRIM_BSSGP_GMM_SUSPEND: - return gprs_gmm_rx_suspend(bp->ra_id, bp->tlli); - case PRIM_BSSGP_GMM_RESUME: - return gprs_gmm_rx_resume(bp->ra_id, bp->tlli, - bp->u.resume.suspend_ref); - } - break; - case SAP_BSSGP_NM: - break; - } - return 0; -} - -static void signal_handler(int signal) -{ - fprintf(stdout, "signal %u received\n", signal); - - switch (signal) { - case SIGINT: - case SIGTERM: - osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL); - sleep(1); - exit(0); - break; - case SIGABRT: - /* in case of abort, we want to obtain a talloc report - * and then return to the caller, who will abort the process */ - case SIGUSR1: - talloc_report(tall_vty_ctx, stderr); - talloc_report_full(tall_sgsn_ctx, stderr); - break; - case SIGUSR2: - talloc_report_full(tall_vty_ctx, stderr); - break; - default: - break; - } -} - -/* NSI that BSSGP uses when transmitting on NS */ -extern struct gprs_ns_inst *bssgp_nsi; - -int sgsn_vty_is_config_node(struct vty *vty, int node) -{ - /* So far the SGSN has no nested nodes that need parent node - * declaration, except for the ss7 vty nodes. */ - switch (node) { - case SGSN_NODE: - return 1; - default: -#if BUILD_IU - return osmo_ss7_is_config_node(vty, node); -#else - return 0; -#endif - } -} - -int sgsn_vty_go_parent(struct vty *vty) -{ - /* So far the SGSN has no nested nodes that need parent node - * declaration, except for the ss7 vty nodes. */ -#if BUILD_IU - return osmo_ss7_vty_go_parent(vty); -#else - vty->node = CONFIG_NODE; - vty->index = NULL; - return 0; -#endif -} - -static struct vty_app_info vty_info = { - .name = "OsmoSGSN", - .version = PACKAGE_VERSION, - .go_parent_cb = sgsn_vty_go_parent, - .is_config_node = sgsn_vty_is_config_node, -}; - -static void print_help(void) -{ - printf("Some useful help...\n"); - printf(" -h --help\tthis text\n"); - printf(" -V --version\tPrint the version\n"); - printf(" -D --daemonize\tFork the process into a background daemon\n"); - printf(" -d option --debug\tenable Debugging\n"); - printf(" -s --disable-color\n"); - printf(" -c --config-file\tThe config file to use [%s]\n", CONFIG_FILE_DEFAULT); - printf(" -e --log-level number\tSet a global log level\n"); -} - -static void handle_options(int argc, char **argv) -{ - while (1) { - int option_index = 0, c; - static struct option long_options[] = { - {"help", 0, 0, 'h'}, - {"debug", 1, 0, 'd'}, - {"daemonize", 0, 0, 'D'}, - {"config-file", 1, 0, 'c'}, - {"disable-color", 0, 0, 's'}, - {"timestamp", 0, 0, 'T'}, - { "version", 0, 0, 'V' }, - {"log-level", 1, 0, 'e'}, - {NULL, 0, 0, 0} - }; - - c = getopt_long(argc, argv, "hd:Dc:sTVe:", - long_options, &option_index); - if (c == -1) - break; - - switch (c) { - case 'h': - //print_usage(); - print_help(); - exit(0); - case 's': - log_set_use_color(osmo_stderr_target, 0); - break; - case 'd': - log_parse_category_mask(osmo_stderr_target, optarg); - break; - case 'D': - daemonize = 1; - break; - case 'c': - osmo_talloc_replace_string(sgsn, &sgsn->config_file, optarg); - break; - case 'T': - log_set_print_timestamp(osmo_stderr_target, 1); - break; - case 'V': - print_version(1); - exit(0); - break; - case 'e': - log_set_log_level(osmo_stderr_target, atoi(optarg)); - break; - default: - /* ignore */ - break; - } - } -} - -/* default categories */ -static struct log_info_cat gprs_categories[] = { - [DMM] = { - .name = "DMM", - .description = "Layer3 Mobility Management (MM)", - .color = "\033[1;33m", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DPAG] = { - .name = "DPAG", - .description = "Paging Subsystem", - .color = "\033[1;38m", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DMEAS] = { - .name = "DMEAS", - .description = "Radio Measurement Processing", - .enabled = 0, .loglevel = LOGL_NOTICE, - }, - [DREF] = { - .name = "DREF", - .description = "Reference Counting", - .enabled = 0, .loglevel = LOGL_NOTICE, - }, - [DGPRS] = { - .name = "DGPRS", - .description = "GPRS Packet Service", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DNS] = { - .name = "DNS", - .description = "GPRS Network Service (NS)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DBSSGP] = { - .name = "DBSSGP", - .description = "GPRS BSS Gateway Protocol (BSSGP)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DLLC] = { - .name = "DLLC", - .description = "GPRS Logical Link Control Protocol (LLC)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DSNDCP] = { - .name = "DSNDCP", - .description = "GPRS Sub-Network Dependent Control Protocol (SNDCP)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DRANAP] = { - .name = "DRANAP", - .description = "RAN Application Part (RANAP)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DSUA] = { - .name = "DSUA", - .description = "SCCP User Adaptation (SUA)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DSLHC] = { - .name = "DSLHC", - .description = "RFC1144 TCP/IP Header compression (SLHC)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DV42BIS] = { - .name = "DV42BIS", - .description = "V.42bis data compression (SNDCP)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, - [DGTP] = { - .name = "DGTP", - .description = "GPRS Tunnelling Protocol (GTP)", - .enabled = 1, .loglevel = LOGL_NOTICE, - }, -}; - -static const struct log_info gprs_log_info = { - .filter_fn = gprs_log_filter_fn, - .cat = gprs_categories, - .num_cat = ARRAY_SIZE(gprs_categories), -}; - -static bool file_exists(const char *path) -{ - struct stat sb; - return stat(path, &sb) ? false : true; -} - -int main(int argc, char **argv) -{ - int rc; -#if BUILD_IU - struct osmo_sccp_instance *sccp; -#endif - - srand(time(NULL)); - tall_sgsn_ctx = talloc_named_const(NULL, 0, "osmo_sgsn"); - sgsn = sgsn_instance_alloc(tall_sgsn_ctx); - msgb_talloc_ctx_init(tall_sgsn_ctx, 0); - vty_info.tall_ctx = tall_sgsn_ctx; - - 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_sgsn_ctx, &gprs_log_info); - osmo_stats_init(tall_sgsn_ctx); - - vty_info.copyright = openbsc_copyright; - vty_init(&vty_info); - logging_vty_add_cmds(); - osmo_talloc_vty_add_cmds(); - osmo_stats_vty_add_cmds(); - sgsn_vty_init(&sgsn->cfg); - ctrl_vty_init(tall_sgsn_ctx); - -#if BUILD_IU - osmo_ss7_init(); - osmo_ss7_vty_init_asp(tall_sgsn_ctx); - osmo_sccp_vty_init(); -#endif - - handle_options(argc, argv); - - /* Backwards compatibility: for years, the default config file name was - * osmo_sgsn.cfg. All other Osmocom programs use osmo-*.cfg with a - * dash. To be able to use the new config file name without breaking - * previous setups that might rely on the legacy default config file - * name, we need to look for the old config file if no -c option was - * passed AND no file exists with the new default file name. */ - if (!sgsn->config_file) { - /* No -c option was passed */ - if (file_exists(CONFIG_FILE_LEGACY) - && !file_exists(CONFIG_FILE_DEFAULT)) - osmo_talloc_replace_string(sgsn, &sgsn->config_file, CONFIG_FILE_LEGACY); - else - osmo_talloc_replace_string(sgsn, &sgsn->config_file, CONFIG_FILE_DEFAULT); - } - - rate_ctr_init(tall_sgsn_ctx); - - gprs_ns_set_log_ss(DNS); - bssgp_set_log_ss(DBSSGP); - - sgsn_nsi = gprs_ns_instantiate(&sgsn_ns_cb, tall_sgsn_ctx); - if (!sgsn_nsi) { - LOGP(DGPRS, LOGL_ERROR, "Unable to instantiate NS\n"); - exit(1); - } - bssgp_nsi = sgsn->cfg.nsi = sgsn_nsi; - - gprs_llc_init("/usr/local/lib/osmocom/crypt/"); - sgsn_rate_ctr_init(); - sgsn_inst_init(sgsn); - - gprs_ns_vty_init(bssgp_nsi); - bssgp_vty_init(); - gprs_llc_vty_init(); - gprs_sndcp_vty_init(); - sgsn_auth_init(sgsn); - sgsn_cdr_init(sgsn); - /* FIXME: register signal handler for SS_L_NS */ - - rc = sgsn_parse_config(sgsn->config_file); - if (rc < 0) { - LOGP(DGPRS, LOGL_FATAL, "Error in config file\n"); - exit(2); - } - - /* start telnet after reading config for vty_get_bind_addr() */ - rc = telnet_init_dynif(tall_sgsn_ctx, NULL, - vty_get_bind_addr(), OSMO_VTY_PORT_SGSN); - if (rc < 0) - exit(1); - - /* start control interface after reading config for - * ctrl_vty_get_bind_addr() */ - g_ctrlh = ctrl_interface_setup_dynip(NULL, ctrl_vty_get_bind_addr(), - OSMO_CTRL_PORT_SGSN, NULL); - if (!g_ctrlh) { - LOGP(DGPRS, LOGL_ERROR, "Failed to create CTRL interface.\n"); - exit(1); - } - - if (sgsn_ctrl_cmds_install() != 0) { - LOGP(DGPRS, LOGL_ERROR, "Failed to install CTRL commands.\n"); - exit(1); - } - - - rc = sgsn_gtp_init(sgsn); - if (rc) { - LOGP(DGPRS, LOGL_FATAL, "Cannot bind/listen on GTP socket\n"); - exit(2); - } else - LOGP(DGPRS, LOGL_NOTICE, "libGTP v%s initialized\n", gtp_version()); - - rc = gprs_subscr_init(sgsn); - if (rc < 0) { - LOGP(DGPRS, LOGL_FATAL, "Cannot set up subscriber management\n"); - exit(2); - } - - rc = gprs_ns_nsip_listen(sgsn_nsi); - if (rc < 0) { - LOGP(DGPRS, LOGL_FATAL, "Cannot bind/listen on NSIP socket\n"); - exit(2); - } - - rc = gprs_ns_frgre_listen(sgsn_nsi); - if (rc < 0) { - LOGP(DGPRS, LOGL_FATAL, "Cannot bind/listen GRE " - "socket. Do you have CAP_NET_RAW?\n"); - exit(2); - } - - if (sgsn->cfg.dynamic_lookup) { - if (sgsn_ares_init(sgsn) != 0) { - LOGP(DGPRS, LOGL_FATAL, - "Failed to initialize c-ares(%d)\n", rc); - exit(4); - } - } - -#if BUILD_IU - /* Note that these are mostly defaults and can be overriden from the VTY */ - sccp = osmo_sccp_simple_client_on_ss7_id(tall_sgsn_ctx, - sgsn->cfg.iu.cs7_instance, - "OsmoSGSN", - (23 << 3) + 4, - OSMO_SS7_ASP_PROT_M3UA, - 0, NULL, - 0, "127.0.0.1"); - if (!sccp) { - printf("Setting up SCCP client failed.\n"); - return 8; - } - - ranap_iu_init(tall_sgsn_ctx, DRANAP, "OsmoSGSN-IuPS", sccp, gsm0408_gprs_rcvmsg_iu, sgsn_ranap_iu_event); -#endif - - if (daemonize) { - rc = osmo_daemonize(); - if (rc < 0) { - perror("Error during daemonize"); - exit(1); - } - } - - while (1) { - rc = osmo_select_main(0); - if (rc < 0) - exit(3); - } - - /* not reached */ - exit(0); -} |