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authorHarald Welte <laforge@gnumonks.org>2011-03-03 23:36:48 +0100
committerHarald Welte <laforge@gnumonks.org>2011-03-03 23:36:48 +0100
commita17faf8512992a53a14e8b615f5369be05c5f0cc (patch)
tree044ab53a68634ddcf12130bbc1275e86423e449f /openbsc/src/osmo-bsc_mgcp
parent31c00f7d6fa63937f2c973157d196a427f6eef95 (diff)
Rename bsc_nat -> osmo-bsc_nat and bsc_mgcp -> osmo-bsc_mgcp
This now enforces a unique structure: All of our main daemon programs start with an "osmo-" prefix.
Diffstat (limited to 'openbsc/src/osmo-bsc_mgcp')
-rw-r--r--openbsc/src/osmo-bsc_mgcp/Makefile.am9
-rw-r--r--openbsc/src/osmo-bsc_mgcp/mgcp_main.c283
2 files changed, 292 insertions, 0 deletions
diff --git a/openbsc/src/osmo-bsc_mgcp/Makefile.am b/openbsc/src/osmo-bsc_mgcp/Makefile.am
new file mode 100644
index 0000000..b72c46c
--- /dev/null
+++ b/openbsc/src/osmo-bsc_mgcp/Makefile.am
@@ -0,0 +1,9 @@
+INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(COVERAGE_LDFLAGS)
+
+bin_PROGRAMS = bsc_mgcp
+
+bsc_mgcp_SOURCES = mgcp_main.c
+bsc_mgcp_LDADD = $(top_srcdir)/src/common/libcommon.a $(top_srcdir)/src/mgcp/libmgcp.a \
+ $(LIBOSMOVTY_LIBS)
diff --git a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
new file mode 100644
index 0000000..c8d9a62
--- /dev/null
+++ b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
@@ -0,0 +1,283 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The main method to drive it as a standalone process */
+
+/*
+ * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009 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 <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include <sys/socket.h>
+
+#include <openbsc/debug.h>
+#include <osmocore/msgb.h>
+#include <osmocore/talloc.h>
+#include <osmocore/process.h>
+#include <openbsc/gsm_data.h>
+#include <osmocore/select.h>
+#include <openbsc/mgcp.h>
+#include <openbsc/mgcp_internal.h>
+#include <osmocom/vty/telnet_interface.h>
+#include <osmocom/vty/logging.h>
+#include <openbsc/vty.h>
+
+#include <osmocom/vty/command.h>
+
+#include "../../bscconfig.h"
+
+/* this is here for the vty... it will never be called */
+void subscr_put() { abort(); }
+
+#define _GNU_SOURCE
+#include <getopt.h>
+
+#warning "Make use of the rtp proxy code"
+
+static struct mgcp_config *cfg;
+static int reset_endpoints = 0;
+static int daemonize = 0;
+
+const char *openbsc_copyright =
+ "Copyright (C) 2009-2010 Holger Freyther and On-Waves\r\n"
+ "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\r\n"
+ "Dieter Spaar, Andreas Eversberg, Harald Welte\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";
+
+static char *config_file = "mgcp.cfg";
+
+/* used by msgb and mgcp */
+void *tall_bsc_ctx = NULL;
+
+static void print_help()
+{
+ printf("Some useful help...\n");
+ printf(" -h --help is printing this text.\n");
+ printf(" -c --config-file filename The config file to use.\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'},
+ {"config-file", 1, 0, 'c'},
+ {"daemonize", 0, 0, 'D'},
+ {"version", 0, 0, 'V'},
+ {0, 0, 0, 0},
+ };
+
+ c = getopt_long(argc, argv, "hc:VD", long_options, &option_index);
+
+ if (c == -1)
+ break;
+
+ switch(c) {
+ case 'h':
+ print_help();
+ exit(0);
+ break;
+ case 'c':
+ config_file = talloc_strdup(tall_bsc_ctx, optarg);
+ break;
+ case 'V':
+ print_version(1);
+ exit(0);
+ break;
+ case 'D':
+ daemonize = 1;
+ break;
+ default:
+ /* ignore */
+ break;
+ };
+ }
+}
+
+/* simply remember this */
+static int mgcp_rsip_cb(struct mgcp_config *cfg)
+{
+ reset_endpoints = 1;
+
+ return 0;
+}
+
+static int mgcp_change_cb(struct mgcp_trunk_config *cfg, int endpoint, int state)
+{
+ if (state != MGCP_ENDP_MDCX)
+ return 0;
+
+ mgcp_send_dummy(&cfg->endpoints[endpoint]);
+ return 0;
+}
+
+static int read_call_agent(struct bsc_fd *fd, unsigned int what)
+{
+ struct sockaddr_in addr;
+ socklen_t slen = sizeof(addr);
+ struct msgb *msg;
+ struct msgb *resp;
+ int i;
+
+ msg = (struct msgb *) fd->data;
+
+ /* read one less so we can use it as a \0 */
+ int rc = recvfrom(cfg->gw_fd.bfd.fd, msg->data, msg->data_len - 1, 0,
+ (struct sockaddr *) &addr, &slen);
+ if (rc < 0) {
+ perror("Gateway failed to read");
+ return -1;
+ } else if (slen > sizeof(addr)) {
+ fprintf(stderr, "Gateway received message from outerspace: %lu %d\n",
+ slen, sizeof(addr));
+ return -1;
+ }
+
+ /* handle message now */
+ msg->l2h = msgb_put(msg, rc);
+ resp = mgcp_handle_message(cfg, msg);
+ msgb_reset(msg);
+
+ if (resp) {
+ sendto(cfg->gw_fd.bfd.fd, resp->l2h, msgb_l2len(resp), 0, (struct sockaddr *) &addr, sizeof(addr));
+ msgb_free(resp);
+ }
+
+ if (reset_endpoints) {
+ LOGP(DMGCP, LOGL_NOTICE, "Asked to reset endpoints.\n");
+ reset_endpoints = 0;
+
+ /* is checking in_addr.s_addr == INADDR_LOOPBACK making it more secure? */
+ for (i = 1; i < cfg->trunk.number_endpoints; ++i)
+ mgcp_free_endp(&cfg->trunk.endpoints[i]);
+ }
+
+ return 0;
+}
+
+extern enum node_type bsc_vty_go_parent(struct vty *vty);
+
+static struct vty_app_info vty_info = {
+ .name = "OpenBSC MGCP",
+ .version = PACKAGE_VERSION,
+ .go_parent_cb = bsc_vty_go_parent,
+ .is_config_node = bsc_vty_is_config_node,
+};
+
+int main(int argc, char **argv)
+{
+ struct gsm_network dummy_network;
+ struct sockaddr_in addr;
+ int on = 1, rc;
+ struct log_target *stderr_target;
+
+ tall_bsc_ctx = talloc_named_const(NULL, 1, "mgcp-callagent");
+
+ log_init(&log_info);
+ stderr_target = log_target_create_stderr();
+ log_add_target(stderr_target);
+ log_set_all_filter(stderr_target, 1);
+
+ cfg = mgcp_config_alloc();
+ if (!cfg)
+ return -1;
+
+ vty_info.copyright = openbsc_copyright;
+ vty_init(&vty_info);
+ logging_vty_add_cmds();
+ mgcp_vty_init();
+
+ handle_options(argc, argv);
+
+ rc = mgcp_parse_config(config_file, cfg);
+ if (rc < 0)
+ return rc;
+
+ rc = telnet_init(tall_bsc_ctx, &dummy_network, 4243);
+ if (rc < 0)
+ return rc;
+
+ /* set some callbacks */
+ cfg->reset_cb = mgcp_rsip_cb;
+ cfg->change_cb = mgcp_change_cb;
+
+ /* we need to bind a socket */
+ if (rc == 0) {
+ cfg->gw_fd.bfd.when = BSC_FD_READ;
+ cfg->gw_fd.bfd.cb = read_call_agent;
+ cfg->gw_fd.bfd.fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (cfg->gw_fd.bfd.fd < 0) {
+ perror("Gateway failed to listen");
+ return -1;
+ }
+
+ setsockopt(cfg->gw_fd.bfd.fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(cfg->source_port);
+ inet_aton(cfg->source_addr, &addr.sin_addr);
+
+ if (bind(cfg->gw_fd.bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Gateway failed to bind");
+ return -1;
+ }
+
+ cfg->gw_fd.bfd.data = msgb_alloc(4096, "mgcp-msg");
+ if (!cfg->gw_fd.bfd.data) {
+ fprintf(stderr, "Gateway memory error.\n");
+ return -1;
+ }
+
+
+ if (bsc_register_fd(&cfg->gw_fd.bfd) != 0) {
+ LOGP(DMGCP, LOGL_FATAL, "Failed to register the fd\n");
+ return -1;
+ }
+
+ LOGP(DMGCP, LOGL_NOTICE, "Configured for MGCP.\n");
+ }
+
+ /* initialisation */
+ srand(time(NULL));
+
+ if (daemonize) {
+ rc = osmo_daemonize();
+ if (rc < 0) {
+ perror("Error during daemonize");
+ exit(1);
+ }
+ }
+
+ /* main loop */
+ while (1) {
+ bsc_select_main(0);
+ }
+
+
+ return 0;
+}