Adding upstream version 1.9.16p2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

plugins/python/example_approval_plugin.py

@@ -0,0 +1,18 @@
+import sudo
+
+from datetime import datetime
+
+
+class BusinessHoursApprovalPlugin(sudo.Plugin):
+    def check(self, command_info: tuple, run_argv: tuple,
+              run_env: tuple) -> int:
+        error_msg = ""
+        now = datetime.now()
+        if now.weekday() >= 5:
+            error_msg = "That is not allowed on the weekend!"
+        if now.hour < 8 or now.hour > 17:
+            error_msg = "That is not allowed outside the business hours!"
+
+        if error_msg:
+            sudo.log_info(error_msg)
+            raise sudo.PluginReject(error_msg)