Merge branch 'johncylee-emitter'

README.md

@@ -15,6 +15,9 @@ var options = {
     ...
 };
 var auth = new LdapAuth(options);
+auth.on('error', function (err) {
+    console.error('LdapAuth: ', err);
+});
 ...
 auth.authenticate(username, password, function(err, user) { ... });
 ...

lib/ldapauth.js

@@ -17,6 +17,8 @@ var ldap = require('ldapjs');
 var debug = console.warn;
 var format = require('util').format;
 var bcrypt = require('bcryptjs');
+var inherits = require('util').inherits;
+var EventEmitter = require('events').EventEmitter;
 
 // Get option that may be defined under different names, but accept
 // the first one that is actually defined in the given object
@@ -109,6 +111,8 @@ function LdapAuth(opts) {
   this.opts.groupSearchScope || (this.opts.groupSearchScope = 'sub');
   this.opts.groupDnProperty || (this.opts.groupDnProperty = 'dn');
 
+  EventEmitter.call(this);
+
   if (opts.cache) {
     var Cache = require('./cache');
     this.userCache = new Cache(100, 300, this.log, 'user');
@@ -132,6 +136,13 @@ function LdapAuth(opts) {
   this._adminBound = false;
   this._userClient = ldap.createClient(this.clientOpts);
 
+  var self = this;
+  function emitErr(err) {
+    self.emit('error', err);
+  }
+  this._adminClient.on('error', emitErr);
+  this._userClient.on('error', emitErr);
+
   if (opts.cache) {
     this._salt = bcrypt.genSaltSync();
   }
@@ -153,7 +164,7 @@ function LdapAuth(opts) {
     }
   }
 };
-
+inherits(LdapAuth, EventEmitter);
 
 LdapAuth.prototype.close = function (callback) {
   var self = this;