1 files changed, 62 insertions, 0 deletions
diff --git a/src/libmsc/smpp_utils.c b/src/libmsc/smpp_utils.c
new file mode 100644
index 000000000..d0850d8c1
--- /dev/null
+++ b/src/libmsc/smpp_utils.c
@@ -0,0 +1,62 @@
+
+/* (C) 2012-2013 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/licenses/>.
+ */
+
+
+#include "smpp_smsc.h"
+#include <openbsc/debug.h>
+
+
+int smpp_determine_scheme(uint8_t dcs, uint8_t *data_coding, int *mode)
+{
+	if ((dcs & 0xF0) == 0xF0) {
+		if (dcs & 0x04) {
+			/* bit 2 == 1: 8bit data */
+			*data_coding = 0x02;
+			*mode = MODE_8BIT;
+		} else {
+			/* bit 2 == 0: default alphabet */
+			*data_coding = 0x01;
+			*mode = MODE_7BIT;
+		}
+	} else if ((dcs & 0xE0) == 0) {
+		switch (dcs & 0xC) {
+		case 0:
+			*data_coding = 0x01;
+			*mode = MODE_7BIT;
+			break;
+		case 4:
+			*data_coding = 0x02;
+			*mode = MODE_8BIT;
+			break;
+		case 8:
+			*data_coding = 0x08;     /* UCS-2 */
+			*mode = MODE_8BIT;
+			break;
+		default:
+			goto unknown_mo;
+		}
+	} else {
+unknown_mo:
+		LOGP(DLSMS, LOGL_ERROR, "SMPP MO Unknown Data Coding 0x%02x\n", dcs);
+		return -1;
+	}
+
+	return 0;
+
+}