move to libxsc: factor out gen of USSD notify and release complete

Both libmsc and libbsc will need distinct gsm0480_send_ussdNotify() and
gsm0480_send_releaseComplete() functions, since there will be distinct
subscriber connection structs.

The current functions live in libmsc, so add the same in libbsc in new file
gsm_04_80_utils.c.

To avoid too much code dup, move the message generation part of
gsm0480_send_ussdNotify() and gsm0480_send_releaseComplete() to new functions
gsm0480_gen_ussdNotify() and gsm0480_gen_releaseComplete(), placed in libxsc.

Change-Id: I33a84e3c28576ced91d2ea24103123431f551173

2 files changed, 41 insertions, 1 deletions

diff --git a/openbsc/src/libbsc/Makefile.am b/openbsc/src/libbsc/Makefile.am
index 8c5381777..18828f940 100644
--- a/openbsc/src/libbsc/Makefile.am
+++ b/openbsc/src/libbsc/Makefile.am
@@ -41,6 +41,7 @@ libbsc_a_SOURCES = \
 	bsc_api.c \
 	bsc_msc.c bsc_vty.c \
 	gsm_04_08_utils.c \
+	gsm_04_80_utils.c \
 	bsc_init.c \
 	bts_init.c \
 	bsc_rf_ctrl.c \
@@ -51,4 +52,3 @@ libbsc_a_SOURCES = \
 	bsc_dyn_ts.c \
 	bts_ipaccess_nanobts_omlattr.c \
 	$(NULL)
-
diff --git a/openbsc/src/libbsc/gsm_04_80_utils.c b/openbsc/src/libbsc/gsm_04_80_utils.c
new file mode 100644
index 000000000..c96259d66
--- /dev/null
+++ b/openbsc/src/libbsc/gsm_04_80_utils.c
@@ -0,0 +1,40 @@
+/* OpenBSC utility functions for 3GPP TS 04.80 */
+
+/* (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de>
+ *
+ * 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 <openbsc/gsm_04_80.h>
+#include <openbsc/bsc_api.h>
+
+int bsc_gsm0480_send_ussdNotify(struct gsm_subscriber_connection *conn, int
+				level, const char *text)
+{
+	struct msgb *msg = gsm0480_gen_ussdNotify(level, text);
+	if (!msg)
+		return -1;
+	return gsm0808_submit_dtap(conn, msg, 0, 0);
+}
+
+int bsc_gsm0480_send_releaseComplete(struct gsm_subscriber_connection *conn)
+{
+	struct msgb *msg = gsm0480_gen_releaseComplete();
+	if (!msg)
+		return -1;
+	return gsm0808_submit_dtap(conn, msg, 0, 0);
+}