From 122b6331927dd65d716d71cdf8fcb728cc2475f9 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Fri, 27 Jan 2012 13:07:13 +0100
Subject: bsc_mgcp: Send RSIP for all endpoints when SIGHUP is received

this will be used as quick work-around so osmo-bsc kan trigger RSIP
after a re-connect to a MSC requiring RSIP from the MGW.

In the ideal world, the MSC (call agent) would comply with the MGCP spec
and send AUEP, but well...
---
 openbsc/src/osmo-bsc/osmo_bsc_bssap.c |  6 ++++++
 openbsc/src/osmo-bsc_mgcp/mgcp_main.c | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
index a59e2f674..0742b0b26 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_bssap.c
@@ -29,6 +29,7 @@
 #include <osmocom/gsm/protocol/gsm_08_08.h>
 #include <osmocom/gsm/gsm0808.h>
 
+#include <sys/signal.h>
 #include <arpa/inet.h>
 
 static uint16_t read_data16(const uint8_t *data)
@@ -102,6 +103,11 @@ static int bssmap_handle_reset_ack(struct gsm_network *net,
 				   struct msgb *msg, unsigned int length)
 {
 	LOGP(DMSC, LOGL_NOTICE, "Reset ACK from MSC\n");
+
+	/* notify bsc_mgcp to reset all end-points */
+	if (net->msc_data->bsc_mgcp.pid)
+		kill(net->msc_data->bsc_mgcp.pid, SIGHUP);
+
 	return 0;
 }
 
diff --git a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
index f73e73d11..94d2d7f3b 100644
--- a/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
+++ b/openbsc/src/osmo-bsc_mgcp/mgcp_main.c
@@ -30,6 +30,7 @@
 #include <unistd.h>
 
 #include <sys/socket.h>
+#include <sys/signal.h>
 
 #include <openbsc/debug.h>
 #include <openbsc/gsm_data.h>
@@ -196,6 +197,15 @@ static struct vty_app_info vty_info = {
 	.is_config_node	= bsc_vty_is_config_node,
 };
 
+static void sig_handler(int sig)
+{
+	if (sig != SIGHUP)
+		return;
+
+	LOGP(DMGCP, LOGL_NOTICE, "SIGHUP received, resetting all endpoints\n");
+	mgcp_send_reset_all(cfg);
+}
+
 int main(int argc, char **argv)
 {
 	struct gsm_network dummy_network;
@@ -205,6 +215,7 @@ int main(int argc, char **argv)
 	tall_bsc_ctx = talloc_named_const(NULL, 1, "mgcp-callagent");
 
 	osmo_init_ignore_signals();
+	signal(SIGHUP, &sig_handler);
 	osmo_init_logging(&log_info);
 
 	cfg = mgcp_config_alloc();
-- 
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