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authorPau Espin Pedrol <pespin@sysmocom.de>2019-08-30 20:47:02 +0200
committerPau Espin Pedrol <pespin@sysmocom.de>2019-09-02 14:03:04 +0200
commit762c39ccc65e0307a32b89e8bf7daaad2b6b66b4 (patch)
treec1d0de85859115be63d89d7802b278cfe013019d /src/gprs/sgsn_main.c
parentea05d5c5f89f034a8d2c4151507f59a520535d9a (diff)
Move out sgsn to its own subdir
Diffstat (limited to 'src/gprs/sgsn_main.c')
-rw-r--r--src/gprs/sgsn_main.c536
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 eef5f8f2..00000000
--- 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);
-}