added timeout support

lib/wmic.js

@@ -17,6 +17,7 @@ var wmic = function (options) {
     this.username = getUsername(options.username);
     this.password = options.password;
     this.namespace = options.namespace || '\\\\root\\cimv2';
+    this.timeout = options.timeout || 90000;
     this.delimiter = '^@^';
     this.wmic = options.wmic || 'wmic';
     this.isWindows = process.platform === 'win32';
@@ -120,6 +121,7 @@ wmic.prototype.query = function (wql, namespace, callback) {
  */
 wmic.prototype._exec = function (callback) {
     var self = this;
+
     var wmic = spawn(this.wmic, this._getArgs(), {
         cwd: path.join(__dirname, '..'),
         stdio: ['ignore', 'pipe', 'pipe']
@@ -137,13 +139,22 @@ wmic.prototype._exec = function (callback) {
         stderr += data;
     });
 
+    var to = setTimeout(function () {
+        stderr = 'Child process killed by timeout (' + self.timeout / 1000 + ' seconds)';
+        wmic.kill();
+    }, self.timeout);
+
     wmic.on('close', function (code) {
         if (code !== 0) {
             callback(new Error('Exit code: ' + code + '. ' + stderr));
         } else {
             callback(null, parse(stdout, self.parserOptions));
         }
     });
+
+    wmic.on('exit', function () {
+        clearTimeout(to);
+    });
 };
 
 /**

package.json

@@ -1,6 +1,6 @@
 {
   "name": "wmi-client",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "Wrapper around the WMI client. Linux and Windows WMI clients are supported.",
   "main": "index.js",
   "scripts": {