2 files changed, 49 insertions, 2 deletions
diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
index 24a07a05c..767582604 100644
--- a/src/org/traccar/database/DataManager.java
+++ b/src/org/traccar/database/DataManager.java
@@ -379,4 +379,43 @@ public class DataManager implements IdentityManager {
                 .executeUpdate();
     }
 
+    public void add(Object entity) throws SQLException {
+        if (entity instanceof User) {
+            addUser((User) entity);
+        } else if (entity instanceof Device) {
+            addDevice((Device) entity);
+        } else if (entity instanceof Position) {
+            addPosition((Position) entity);
+        }
+    }
+
+    public void update(Object entity) throws SQLException {
+        if (entity instanceof User) {
+            updateUser((User) entity);
+        } else if (entity instanceof Device) {
+            updateDevice((Device) entity);
+        } else if (entity instanceof Server) {
+            updateServer((Server) entity);
+        }
+    }
+
+    public void remove(Object entity) throws SQLException {
+        if (entity instanceof User) {
+            removeUser((User) entity);
+        } else if (entity instanceof Device) {
+            removeDevice((Device) entity);
+        }
+    }
+
+    public void link(Class clazz, long userId, long entityId) throws SQLException {
+        if (clazz.equals(Device.class)) {
+            linkDevice(userId, entityId);
+        }
+    }
+
+    public void unlink(Class clazz, long userId, long entityId) throws SQLException {
+        if (clazz.equals(Device.class)) {
+            unlinkDevice(userId, entityId);
+        }
+    }
 }
diff --git a/src/org/traccar/database/PermissionsManager.java b/src/org/traccar/database/PermissionsManager.java
index a38a29c32..138641973 100644
--- a/src/org/traccar/database/PermissionsManager.java
+++ b/src/org/traccar/database/PermissionsManager.java
@@ -22,6 +22,7 @@ import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 import org.traccar.helper.Log;
+import org.traccar.model.Device;
 import org.traccar.model.Permission;
 import org.traccar.model.User;
 
@@ -66,7 +67,7 @@ public class PermissionsManager {
         }
     }
 
-    public void checkUser(long userId, long otherUserId) throws SecurityException {
+    private void checkUser(long userId, long otherUserId) throws SecurityException {
         if (userId != otherUserId) {
             checkAdmin(userId);
         }
@@ -76,10 +77,17 @@ public class PermissionsManager {
         return getNotNull(userId);
     }
 
-    public void checkDevice(long userId, long deviceId) throws SecurityException {
+    private void checkDevice(long userId, long deviceId) throws SecurityException {
         if (!getNotNull(userId).contains(deviceId)) {
             throw new SecurityException("Device access denied");
         }
     }
 
+    public <T> void check(Class<T> clazz, long userId, long entityId) throws SecurityException {
+        if (clazz.equals(User.class)) {
+            checkUser(userId, entityId);
+        } else if (clazz.equals(Device.class)) {
+            checkDevice(userId, entityId);
+        }
+    }
 }