initial skeleton
Change-Id: I706aa9e11a646aad71bb310fa552d0bdb5084d4b
diff --git a/src/osmo-smlc/smlc_main.c b/src/osmo-smlc/smlc_main.c
new file mode 100644
index 0000000..9f32441
--- /dev/null
+++ b/src/osmo-smlc/smlc_main.c
@@ -0,0 +1,263 @@
+/* (C) 2020 by Harald Welte <laforge@gnumonks.org>
+ * 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/lienses/>.
+ *
+ */
+
+#include <osmocom/ctrl/control_cmd.h>
+#include <osmocom/ctrl/control_if.h>
+#include <osmocom/ctrl/ports.h>
+#include <osmocom/ctrl/control_vty.h>
+
+#include <osmocom/core/application.h>
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/signal.h>
+#include <osmocom/core/stats.h>
+#include <osmocom/core/rate_ctr.h>
+#include <osmocom/vty/telnet_interface.h>
+#include <osmocom/vty/ports.h>
+#include <osmocom/vty/logging.h>
+#include <osmocom/vty/command.h>
+
+#include <osmocom/sigtran/xua_msg.h>
+#include <osmocom/sigtran/sccp_sap.h>
+
+#include <osmocom/smlc/smlc_data.h>
+#include <osmocom/smlc/smlc_sigtran.h>
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+
+#include "../../config.h"
+
+static const char *config_file = "osmo-smlc.cfg";
+static int daemonize = 0;
+static void *tall_smlc_ctx;
+struct smlc_state *g_smlc;
+
+static void print_usage()
+{
+ printf("Usage: osmo-smlc\n");
+}
+
+static void print_help()
+{
+ printf(" Some useful help...\n");
+ printf(" -h --help This text.\n");
+ printf(" -D --daemonize Fork the process into a background daemon.\n");
+ printf(" -d --debug option --debug=DRLL:DMM:DRR:DRSL:DNM enable debugging.\n");
+ printf(" -V --version Print the version of OsmoBSC.\n");
+ printf(" -c --config-file filename The config file to use.\n");
+ printf(" -e --log-level number Set a global loglevel.\n");
+ printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n");
+}
+
+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'},
+ {"debug", 1, 0, 'd'},
+ {"daemonize", 0, 0, 'D'},
+ {"config-file", 1, 0, 'c'},
+ {"version", 0, 0, 'V' },
+ {"log-level", 1, 0, 'e'},
+ {"vty-ref-xml", 0, &long_option, 1},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long(argc, argv, "hd:Dc:Ve:",
+ long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'h':
+ print_usage();
+ print_help();
+ exit(0);
+ case 0:
+ switch (long_option) {
+ case 1:
+ vty_dump_xml_ref(stdout);
+ exit(0);
+ default:
+ fprintf(stderr, "error parsing cmdline options\n");
+ exit(2);
+ }
+ case 'd':
+ log_parse_category_mask(osmo_stderr_target, optarg);
+ break;
+ case 'D':
+ daemonize = 1;
+ break;
+ case 'c':
+ config_file = optarg;
+ break;
+ case 'V':
+ print_version(1);
+ exit(0);
+ break;
+ case 'e':
+ log_set_log_level(osmo_stderr_target, atoi(optarg));
+ break;
+ default:
+ /* catch unknown options *as well as* missing arguments. */
+ fprintf(stderr, "Error in command line options. Exiting.\n");
+ exit(-1);
+ }
+ }
+
+ if (argc > optind) {
+ fprintf(stderr, "Unsupported positional arguments on command line\n");
+ exit(2);
+ }
+}
+
+static struct vty_app_info vty_info = {
+ .name = "OsmoSMLC",
+ .copyright =
+ "Copyright (C) 2020 Harald Welte and sysmocom - s.f.m.c. GmbH\r\n\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",
+ .version = PACKAGE_VERSION,
+};
+
+static void signal_handler(int signal)
+{
+ fprintf(stdout, "signal %u received\n", signal);
+
+ switch (signal) {
+ case SIGINT:
+ case SIGTERM:
+ 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_full(tall_smlc_ctx, stderr);
+ break;
+ default:
+ break;
+ }
+}
+
+static const struct log_info_cat smlc_categories[] = {
+};
+
+const struct log_info log_info = {
+ .cat = smlc_categories,
+ .num_cat = ARRAY_SIZE(smlc_categories),
+};
+
+int main(int argc, char **argv)
+{
+ int rc;
+
+ tall_smlc_ctx = talloc_named_const(NULL, 1, "osmo-smlc");
+ msgb_talloc_ctx_init(tall_smlc_ctx, 0);
+ osmo_signal_talloc_ctx_init(tall_smlc_ctx);
+ osmo_xua_msg_tall_ctx_init(tall_smlc_ctx);
+ vty_info.tall_ctx = tall_smlc_ctx;
+
+ osmo_init_logging2(tall_smlc_ctx, &log_info);
+ osmo_stats_init(tall_smlc_ctx);
+ rate_ctr_init(tall_smlc_ctx);
+
+ osmo_fsm_set_dealloc_ctx(OTC_SELECT);
+
+ g_smlc = talloc_zero(tall_smlc_ctx, struct smlc_state);
+ OSMO_ASSERT(g_smlc);
+
+ /* This needs to precede handle_options() */
+ vty_init(&vty_info);
+ //smlc_vty_init(g_smlc);
+ ctrl_vty_init(tall_smlc_ctx);
+
+ /* Initialize SS7 */
+ OSMO_ASSERT(osmo_ss7_init() == 0);
+ osmo_ss7_vty_init_asp(tall_smlc_ctx);
+ osmo_sccp_vty_init();
+
+ /* parse options */
+ handle_options(argc, argv);
+
+ /* Read the config */
+ rc = vty_read_config_file(config_file, NULL);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
+ exit(1);
+ }
+
+ /* Start telnet interface after reading config for vty_get_bind_addr() */
+ rc = telnet_init_dynif(tall_smlc_ctx, g_smlc, vty_get_bind_addr(), OSMO_VTY_PORT_SMLC);
+ if (rc < 0)
+ exit(1);
+
+ /* start control interface after reading config for
+ * ctrl_vty_get_bind_addr() */
+ g_smlc->ctrl = ctrl_interface_setup_dynip2(g_smlc, ctrl_vty_get_bind_addr(), OSMO_CTRL_PORT_SMLC,
+ smlc_ctrl_node_lookup, _LAST_CTRL_NODE_SMLC);
+ if (!g_smlc->ctrl) {
+ fprintf(stderr, "Failed to init the control interface. Exiting.\n");
+ exit(1);
+ }
+
+ /*
+ rc = smlc_ctrl_cmds_install(g_smlc);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to install control commands. Exiting.\n");
+ exit(1);
+ }
+ */
+
+ if (smlc_sigtran_init() != 0) {
+ LOGP(DLB, LOGL_ERROR, "Failed to initialize sigtran backhaul.\n");
+ exit(1);
+ }
+
+ signal(SIGINT, &signal_handler);
+ signal(SIGTERM, &signal_handler);
+ signal(SIGABRT, &signal_handler);
+ signal(SIGUSR1, &signal_handler);
+ signal(SIGUSR2, &signal_handler);
+ osmo_init_ignore_signals();
+
+ if (daemonize) {
+ rc = osmo_daemonize();
+ if (rc < 0) {
+ perror("Error during daemonize");
+ exit(1);
+ }
+ }
+
+ while (1) {
+ osmo_select_main_ctx(0);
+ }
+
+ return 0;
+}