2 files changed, 67 insertions, 3 deletions

diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
index e88ff7f0d..f71e3e538 100644
--- a/src/org/traccar/database/DataManager.java
+++ b/src/org/traccar/database/DataManager.java
@@ -40,6 +40,7 @@ import liquibase.resource.FileSystemResourceAccessor;
 import liquibase.resource.ResourceAccessor;
 
 import org.traccar.Config;
+import org.traccar.Context;
 import org.traccar.helper.Log;
 import org.traccar.model.Attribute;
 import org.traccar.model.Device;
@@ -300,11 +301,23 @@ public class DataManager {
         User user = QueryBuilder.create(dataSource, getQuery("database.loginUser"))
                 .setString("email", email.trim())
                 .executeQuerySingle(User.class);
-        if (user != null && user.isPasswordValid(password)) {
-            return user;
+        LdapProvider ldapProvider = Context.getLdapProvider();
+        if (user != null) {
+            if (ldapProvider != null && ldapProvider.login(user.getLogin(), password)
+                    || user.isPasswordValid(password)) {
+                return user;
+            }
         } else {
-            return null;
+            if (ldapProvider != null && ldapProvider.login(email, password)) {
+                user = new User();
+                user.setName(email);
+                user.setEmail(email);
+                user.setLogin(email);
+                Context.getUsersManager().addItem(user);
+                return user;
+            }
         }
+        return null;
     }
 
     public void updateDeviceStatus(Device device) throws SQLException {
diff --git a/src/org/traccar/database/LdapProvider.java b/src/org/traccar/database/LdapProvider.java
new file mode 100644
index 000000000..6a4c244f8
--- /dev/null
+++ b/src/org/traccar/database/LdapProvider.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.database;
+
+import javax.naming.Context;
+import javax.naming.NamingException;
+import javax.naming.directory.InitialDirContext;
+import java.util.Hashtable;
+
+public class LdapProvider {
+
+    private String url;
+    private String context;
+
+    public LdapProvider(String url, String context) {
+        this.url = url;
+        this.context = context;
+    }
+
+    public boolean login(String username, String password) {
+
+        Hashtable<String, String> env = new Hashtable<>();
+        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
+        env.put(Context.PROVIDER_URL, url);
+
+        env.put(Context.SECURITY_AUTHENTICATION, "simple");
+        env.put(Context.SECURITY_PRINCIPAL, "uid=" + username + "," + context);
+        env.put(Context.SECURITY_CREDENTIALS, password);
+
+        try {
+            new InitialDirContext(env).close();
+            return true;
+        } catch (NamingException e) {
+            return false;
+        }
+    }
+
+}