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-rw-r--r--openbsc/src/libmsc/ussd.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/openbsc/src/libmsc/ussd.c b/openbsc/src/libmsc/ussd.c
index b413c83ba..7f01eae71 100644
--- a/openbsc/src/libmsc/ussd.c
+++ b/openbsc/src/libmsc/ussd.c
@@ -51,7 +51,15 @@ int handle_rcv_ussd(struct gsm_subscriber_connection *conn, struct msgb *msg)
memset(&req, 0, sizeof(req));
gh = msgb_l3(msg);
rc = gsm0480_decode_ussd_request(gh, msgb_l3len(msg), &req);
- if (req.text[0] == '\0') /* Release-Complete */
+ if (!rc) {
+ DEBUGP(DMM, "Unhandled SS\n");
+ rc = gsm0480_send_ussd_reject(conn, msg, &req);
+ msc_release_connection(conn);
+ return rc;
+ }
+
+ /* Release-Complete */
+ if (req.text[0] == '\0')
return 0;
if (!strcmp(USSD_TEXT_OWN_NUMBER, (const char *)req.text)) {