chore: import upstream snapshot with attribution

pptp-server/stop.cgi

@@ -0,0 +1,20 @@
+#!/usr/local/bin/perl
+# stop.cgi
+# Shut down the PPTP server
+
+require './pptp-server-lib.pl';
+&error_setup($text{'stop_err'});
+$access{'stop'} || &error($text{'stop_ecannot'});
+if ($config{'stop_cmd'}) {
+	$out = &backquote_logged("$config{'stop_cmd'} 2>&1 </dev/null");
+	&error("<pre>$out</pre>") if ($?);
+	}
+else {
+	$pid = &get_pptpd_pid();
+	if (!$pid || !&kill_logged('TERM', $pid)) {
+		&error($text{'stop_egone'});
+		}
+	}
+&webmin_log("stop");
+&redirect("");
+