--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gen-pdu/auto_scts.c	Sat Aug 05 07:43:45 2023 +0000
@@ -0,0 +1,27 @@
+/*
+ * This module implements automatic generation of SC-Timestamp
+ * based on the current time.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <time.h>
+
+extern u_char scts_buf[7];
+extern int scts_is_set;
+
+void
+set_auto_scts()
+{
+	time_t unixtime;
+	struct tm *tm;
+	char timestr[32];
+
+	time(&unixtime);
+	tm = localtime(&unixtime);
+	sprintf(timestr, "%02d/%02d/%02d,%02d:%02d:%02d%+03d",
+		tm->tm_year % 100, tm->tm_mon + 1, tm->tm_mday,
+		tm->tm_hour, tm->tm_min, tm->tm_sec, tm->tm_gmtoff / (15*60));
+	encode_gsm_sms_abstime(timestr, scts_buf);
+	scts_is_set = 1;
+}