add system clock check

1 files changed, 9 insertions, 0 deletions

diff --git a/src/main.vala b/src/main.vala
index 81f006d..82fe238 100644
--- a/src/main.vala
+++ b/src/main.vala
@@ -80,6 +80,11 @@ public static int main(string[] args) {
 			dev.blink(10);
 	});
 
+	while(!check_valid_time()) {
+		write_to_log("Invalid System Time! Retry in 1 minute...");
+		Posix.sleep(60);
+	}
+
 	write_to_log("KtT Shop System has been started");
 	audio.play_system("startup.ogg");
 
@@ -104,6 +109,10 @@ public static int main(string[] args) {
 	return 0;
 }
 
+public bool check_valid_time() {
+	return time_t() > db.get_timestamp_of_last_purchase();
+}
+
 public void write_to_log(string format, ...) {
 	var arguments = va_list();
 	var message = format.vprintf(arguments);