1 files changed, 41 insertions, 0 deletions
diff --git a/installer/ca.js b/installer/ca.js
new file mode 100644
index 00000000..811d3016
--- /dev/null
+++ b/installer/ca.js
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
+ */
+
+function EvaluateWireGuardServices() {
+	var inst = Session.Installer;
+	var db = Session.Database;
+	var view = db.OpenView("INSERT INTO `ServiceControl` (`ServiceControl`, `Name`, `Event`, `Component_`) VALUES(?, ?, ?, ?) TEMPORARY");
+	var rec = inst.CreateRecord(4);
+	var wsh = new ActiveXObject("WScript.Shell");
+	var shl = new ActiveXObject("Shell.Application");
+	var fso = new ActiveXObject("Scripting.FileSystemObject");
+	var serviceKey = "HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services";
+	var servicePrefix = "WireGuardTunnel$";
+	var serviceKeyPrefix = serviceKey + "\\" + servicePrefix;
+	var allowedNameFormat = new RegExp("^[a-zA-Z0-9_=+.-]{1,32}$");
+	var msiOperators = new RegExp("[=+-]", "g");
+	var index = 0;
+
+	function insertServiceControl(serviceName) {
+		rec.StringData (1/*ServiceControl*/) = serviceName.replace(msiOperators, "_") + (index++).toString();
+		rec.StringData (2/*Name          */) = serviceName;
+		rec.IntegerData(3/*Event         */) = 0x2/*msidbServiceControlEventStop*/ | 0x20/*msidbServiceControlEventUninstallStop*/ | 0x80/*msidbServiceControlEventUninstallDelete*/ | (shl.IsServiceRunning(serviceName) ? 0x1/*msidbServiceControlEventStart*/ : 0);
+		rec.StringData (4/*Component     */) = "WireGuardExecutable";
+
+		view.Execute(rec);
+	}
+
+	insertServiceControl("WireGuardManager");
+
+	var exe = wsh.Exec(fso.BuildPath(fso.GetSpecialFolder(1), "reg.exe") + " QUERY \"" + serviceKey + "\"");
+	var lines = exe.StdOut.ReadAll().split(new RegExp("\r?\n", "g"));
+	for (var i = 0; i < lines.length; ++i) {
+		if (lines[i].length > serviceKeyPrefix.length && lines[i].substring(0, serviceKeyPrefix.length) == serviceKeyPrefix) {
+			var tunnelName = lines[i].substring(serviceKeyPrefix.length);
+			if (tunnelName.match(allowedNameFormat) != null)
+				insertServiceControl(servicePrefix + tunnelName);
+		}
+	}
+}