Merge pull request #3522 from Abyss777/saved_commands

Implement Saved Commands

13 files changed, 288 insertions, 80 deletions

diff --git a/src/org/traccar/Context.java b/src/org/traccar/Context.java
index 87d8257ee..210d52429 100644
--- a/src/org/traccar/Context.java
+++ b/src/org/traccar/Context.java
@@ -26,6 +26,7 @@ import java.util.Properties;
 import org.apache.velocity.app.VelocityEngine;
 import org.eclipse.jetty.util.URIUtil;
 import org.traccar.database.CalendarManager;
+import org.traccar.database.CommandsManager;
 import org.traccar.database.AttributesManager;
 import org.traccar.database.BaseObjectManager;
 import org.traccar.database.ConnectionManager;
@@ -56,6 +57,7 @@ import org.traccar.helper.Log;
 import org.traccar.model.Attribute;
 import org.traccar.model.BaseModel;
 import org.traccar.model.Calendar;
+import org.traccar.model.Command;
 import org.traccar.model.Device;
 import org.traccar.model.Driver;
 import org.traccar.model.Geofence;
@@ -213,6 +215,12 @@ public final class Context {
         return driversManager;
     }
 
+    private static CommandsManager commandsManager;
+
+    public static CommandsManager getCommandsManager() {
+        return commandsManager;
+    }
+
     private static StatisticsManager statisticsManager;
 
     public static StatisticsManager getStatisticsManager() {
@@ -392,6 +400,8 @@ public final class Context {
 
         driversManager = new DriversManager(dataManager);
 
+        commandsManager = new CommandsManager(dataManager);
+
         statisticsManager = new StatisticsManager();
 
         if (config.getBoolean("sms.smpp.enable")) {
@@ -421,6 +431,8 @@ public final class Context {
             return (BaseObjectManager<T>) geofenceManager;
         } else if (clazz.equals(Driver.class)) {
             return (BaseObjectManager<T>) driversManager;
+        } else if (clazz.equals(Command.class)) {
+            return (BaseObjectManager<T>) commandsManager;
         }
         return null;
     }
diff --git a/src/org/traccar/api/BaseObjectResource.java b/src/org/traccar/api/BaseObjectResource.java
index b13dc2e71..f0f31a154 100644
--- a/src/org/traccar/api/BaseObjectResource.java
+++ b/src/org/traccar/api/BaseObjectResource.java
@@ -32,6 +32,7 @@ import org.traccar.database.ExtendedObjectManager;
 import org.traccar.database.ManagableObjects;
 import org.traccar.database.SimpleObjectManager;
 import org.traccar.model.BaseModel;
+import org.traccar.model.Command;
 import org.traccar.model.Device;
 import org.traccar.model.Group;
 import org.traccar.model.User;
@@ -51,7 +52,7 @@ public abstract class BaseObjectResource<T extends BaseModel> extends BaseResour
     protected final Set<Long> getSimpleManagerItems(BaseObjectManager<T> manager, boolean all,  long userId) {
         Set<Long> result = null;
         if (all) {
-            if (Context.getPermissionsManager().isAdmin(getUserId())) {
+            if (Context.getPermissionsManager().getUserAdmin(getUserId())) {
                 result = manager.getAllItems();
             } else {
                 Context.getPermissionsManager().checkManager(getUserId());
@@ -73,6 +74,8 @@ public abstract class BaseObjectResource<T extends BaseModel> extends BaseResour
         if (baseClass.equals(Device.class)) {
             Context.getPermissionsManager().checkDeviceReadonly(getUserId());
             Context.getPermissionsManager().checkDeviceLimit(getUserId());
+        } else if (baseClass.equals(Command.class)) {
+            Context.getPermissionsManager().checkLimitCommands(getUserId());
         }
 
         BaseObjectManager<T> manager = Context.getManager(baseClass);
@@ -98,6 +101,8 @@ public abstract class BaseObjectResource<T extends BaseModel> extends BaseResour
         } else if (baseClass.equals(User.class)) {
             User before = Context.getPermissionsManager().getUser(entity.getId());
             Context.getPermissionsManager().checkUserUpdate(getUserId(), before, (User) entity);
+        } else if (baseClass.equals(Command.class)) {
+            Context.getPermissionsManager().checkLimitCommands(getUserId());
         }
         Context.getPermissionsManager().checkPermission(baseClass, getUserId(), entity.getId());
 
@@ -118,6 +123,8 @@ public abstract class BaseObjectResource<T extends BaseModel> extends BaseResour
         Context.getPermissionsManager().checkReadonly(getUserId());
         if (baseClass.equals(Device.class)) {
             Context.getPermissionsManager().checkDeviceReadonly(getUserId());
+        } else if (baseClass.equals(Command.class)) {
+            Context.getPermissionsManager().checkLimitCommands(getUserId());
         }
         Context.getPermissionsManager().checkPermission(baseClass, getUserId(), id);
 
diff --git a/src/org/traccar/api/resource/CommandResource.java b/src/org/traccar/api/resource/CommandResource.java
index 9ed92d3d5..6a258497f 100644
--- a/src/org/traccar/api/resource/CommandResource.java
+++ b/src/org/traccar/api/resource/CommandResource.java
@@ -16,26 +16,59 @@
 package org.traccar.api.resource;
 
 import org.traccar.Context;
-import org.traccar.api.BaseResource;
+import org.traccar.api.ExtendedObjectResource;
+import org.traccar.database.CommandsManager;
 import org.traccar.model.Command;
 
+import java.sql.SQLException;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
 import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
 @Path("commands")
 @Produces(MediaType.APPLICATION_JSON)
 @Consumes(MediaType.APPLICATION_JSON)
-public class CommandResource extends BaseResource {
+public class CommandResource extends ExtendedObjectResource<Command> {
+
+    public CommandResource() {
+        super(Command.class);
+    }
+
+    @GET
+    @Path("send")
+    public Collection<Command> get(@QueryParam("deviceId") long deviceId) throws SQLException {
+        Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+        CommandsManager commandsManager = Context.getCommandsManager();
+        Set<Long> result = new HashSet<>(commandsManager.getUserItems(getUserId()));
+        result.retainAll(commandsManager.getSupportedCommands(deviceId));
+        return commandsManager.getItems(result);
+    }
 
     @POST
-    public Response add(Command entity) throws Exception {
+    @Path("send")
+    public Response send(Command entity) throws Exception {
         Context.getPermissionsManager().checkReadonly(getUserId());
-        Context.getPermissionsManager().checkDevice(getUserId(), entity.getDeviceId());
-        Context.getDeviceManager().sendCommand(entity);
+        long deviceId = entity.getDeviceId();
+        long id = entity.getId();
+        if (deviceId != 0 && id != 0) {
+            Context.getPermissionsManager().checkPermission(Command.class, getUserId(), id);
+            Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+            Context.getPermissionsManager().checkUserDeviceCommand(getUserId(), deviceId, id);
+            Context.getCommandsManager().sendCommand(id, deviceId);
+        } else {
+            Context.getPermissionsManager().checkLimitCommands(getUserId());
+            Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+            Context.getCommandsManager().sendCommand(entity);
+        }
         return Response.ok(entity).build();
     }
 
diff --git a/src/org/traccar/api/resource/CommandTypeResource.java b/src/org/traccar/api/resource/CommandTypeResource.java
index d5d220547..30f9300cb 100644
--- a/src/org/traccar/api/resource/CommandTypeResource.java
+++ b/src/org/traccar/api/resource/CommandTypeResource.java
@@ -36,8 +36,12 @@ public class CommandTypeResource extends BaseResource {
     @GET
     public Collection<CommandType> get(@QueryParam("deviceId") long deviceId,
             @QueryParam("textChannel") boolean textChannel) {
-        Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
-        return Context.getDeviceManager().getCommandTypes(deviceId, textChannel);
+        if (deviceId != 0) {
+            Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+            return Context.getCommandsManager().getCommandTypes(deviceId, textChannel);
+        } else {
+            return Context.getCommandsManager().getAllCommandTypes();
+        }
     }
 
 }
diff --git a/src/org/traccar/api/resource/DeviceResource.java b/src/org/traccar/api/resource/DeviceResource.java
index 1c2c653a4..1fae92dc7 100644
--- a/src/org/traccar/api/resource/DeviceResource.java
+++ b/src/org/traccar/api/resource/DeviceResource.java
@@ -53,7 +53,7 @@ public class DeviceResource extends BaseObjectResource<Device> {
         DeviceManager deviceManager = Context.getDeviceManager();
         Set<Long> result = null;
         if (all) {
-            if (Context.getPermissionsManager().isAdmin(getUserId())) {
+            if (Context.getPermissionsManager().getUserAdmin(getUserId())) {
                 result = deviceManager.getAllItems();
             } else {
                 Context.getPermissionsManager().checkManager(getUserId());
diff --git a/src/org/traccar/api/resource/UserResource.java b/src/org/traccar/api/resource/UserResource.java
index b22e01216..0eb328ab5 100644
--- a/src/org/traccar/api/resource/UserResource.java
+++ b/src/org/traccar/api/resource/UserResource.java
@@ -48,13 +48,13 @@ public class UserResource extends BaseObjectResource<User> {
     public Collection<User> get(@QueryParam("userId") long userId) throws SQLException {
         UsersManager usersManager = Context.getUsersManager();
         Set<Long> result = null;
-        if (Context.getPermissionsManager().isAdmin(getUserId())) {
+        if (Context.getPermissionsManager().getUserAdmin(getUserId())) {
             if (userId != 0) {
                 result = usersManager.getUserItems(userId);
             } else {
                 result = usersManager.getAllItems();
             }
-        } else if (Context.getPermissionsManager().isManager(getUserId())) {
+        } else if (Context.getPermissionsManager().getUserManager(getUserId())) {
             result = usersManager.getManagedItems(getUserId());
         } else {
             throw new SecurityException("Admin or manager access required");
@@ -66,9 +66,9 @@ public class UserResource extends BaseObjectResource<User> {
     @PermitAll
     @POST
     public Response add(User entity) throws SQLException {
-        if (!Context.getPermissionsManager().isAdmin(getUserId())) {
+        if (!Context.getPermissionsManager().getUserAdmin(getUserId())) {
             Context.getPermissionsManager().checkUserUpdate(getUserId(), new User(), entity);
-            if (Context.getPermissionsManager().isManager(getUserId())) {
+            if (Context.getPermissionsManager().getUserManager(getUserId())) {
                 Context.getPermissionsManager().checkUserLimit(getUserId());
             } else {
                 Context.getPermissionsManager().checkRegistration(getUserId());
@@ -81,7 +81,7 @@ public class UserResource extends BaseObjectResource<User> {
             }
         }
         Context.getUsersManager().addItem(entity);
-        if (Context.getPermissionsManager().isManager(getUserId())) {
+        if (Context.getPermissionsManager().getUserManager(getUserId())) {
             Context.getDataManager().linkObject(User.class, getUserId(), ManagedUser.class, entity.getId(), true);
         }
         Context.getUsersManager().refreshUserItems();
diff --git a/src/org/traccar/database/CommandsManager.java b/src/org/traccar/database/CommandsManager.java
new file mode 100644
index 000000000..deb802b29
--- /dev/null
+++ b/src/org/traccar/database/CommandsManager.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 Andrey Kunitsyn (andrey@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 java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.traccar.BaseProtocol;
+import org.traccar.Context;
+import org.traccar.helper.Log;
+import org.traccar.model.Command;
+import org.traccar.model.CommandType;
+import org.traccar.model.Position;
+
+public class CommandsManager  extends ExtendedObjectManager<Command> {
+
+    private boolean fallbackToText;
+
+    public CommandsManager(DataManager dataManager) {
+        super(dataManager, Command.class);
+        fallbackToText = Context.getConfig().getBoolean("command.fallbackToSms");
+    }
+
+    public boolean checkDeviceCommand(long deviceId, long commandId) {
+        return !getAllDeviceItems(deviceId).contains(commandId);
+    }
+
+    public void sendCommand(Command command) throws Exception {
+        sendCommand(command, command.getDeviceId(), fallbackToText);
+    }
+
+    public void sendCommand(long commandId, long deviceId) throws Exception {
+        sendCommand(getById(commandId), deviceId, false);
+    }
+
+    public void sendCommand(Command command, long deviceId, boolean fallbackToText) throws Exception {
+        if (command.getTextChannel()) {
+            Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
+            String phone = Context.getIdentityManager().getById(deviceId).getPhone();
+            if (lastPosition != null) {
+                BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
+                protocol.sendTextCommand(phone, command);
+            } else if (command.getType().equals(Command.TYPE_CUSTOM)) {
+                if (Context.getSmppManager() != null) {
+                    Context.getSmppManager().sendMessageSync(phone, command.getString(Command.KEY_DATA), true);
+                } else {
+                    throw new RuntimeException("SMPP client is not enabled");
+                }
+            } else {
+                throw new RuntimeException("Command " + command.getType() + " is not supported");
+            }
+        } else {
+            ActiveDevice activeDevice = Context.getConnectionManager().getActiveDevice(deviceId);
+            if (activeDevice != null) {
+                activeDevice.sendCommand(command);
+            } else {
+                if (fallbackToText) {
+                    command.setTextChannel(true);
+                    sendCommand(command, deviceId, false);
+                } else {
+                    throw new RuntimeException("Device is not online");
+                }
+            }
+        }
+    }
+
+    public Collection<Long> getSupportedCommands(long deviceId) {
+        List<Long> result = new ArrayList<>();
+        Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
+        boolean online = Context.getConnectionManager().getActiveDevice(deviceId) != null;
+        for (long commandId : getAllDeviceItems(deviceId)) {
+            Command command = getById(commandId);
+            if (command.getTextChannel() || online) {
+                if (lastPosition != null) {
+                    BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
+                    if (protocol.getSupportedTextCommands().contains(command.getType())
+                            || online && protocol.getSupportedDataCommands().contains(command.getType())) {
+                        result.add(commandId);
+                    }
+                } else if (command.getType().equals(Command.TYPE_CUSTOM)) {
+                    result.add(commandId);
+                }
+            }
+        }
+        return result;
+    }
+
+    public Collection<CommandType> getCommandTypes(long deviceId, boolean textChannel) {
+        List<CommandType> result = new ArrayList<>();
+        Position lastPosition = Context.getIdentityManager().getLastPosition(deviceId);
+        if (lastPosition != null) {
+            BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
+            Collection<String> commands;
+            commands = textChannel ? protocol.getSupportedTextCommands() : protocol.getSupportedDataCommands();
+            for (String commandKey : commands) {
+                result.add(new CommandType(commandKey));
+            }
+        } else {
+            result.add(new CommandType(Command.TYPE_CUSTOM));
+        }
+        return result;
+    }
+
+    public Collection<CommandType> getAllCommandTypes() {
+        List<CommandType> result = new ArrayList<>();
+        Field[] fields = Command.class.getDeclaredFields();
+        for (Field field : fields) {
+            if (Modifier.isStatic(field.getModifiers()) && field.getName().startsWith("TYPE_")) {
+                try {
+                    result.add(new CommandType(field.get(null).toString()));
+                } catch (IllegalArgumentException | IllegalAccessException error) {
+                    Log.warning(error);
+                }
+            }
+        }
+        return result;
+    }
+
+}
diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
index 4535a9c38..261541b4d 100644
--- a/src/org/traccar/database/DataManager.java
+++ b/src/org/traccar/database/DataManager.java
@@ -51,6 +51,7 @@ import org.traccar.model.ManagedUser;
 import org.traccar.model.Permission;
 import org.traccar.model.BaseModel;
 import org.traccar.model.Calendar;
+import org.traccar.model.Command;
 import org.traccar.model.Position;
 import org.traccar.model.Server;
 import org.traccar.model.Statistics;
@@ -390,6 +391,8 @@ public class DataManager {
                 return Attribute.class;
             case "calendar":
                 return Calendar.class;
+            case "command":
+                return Command.class;
             default:
                 throw new ClassNotFoundException();
         }
diff --git a/src/org/traccar/database/DeviceManager.java b/src/org/traccar/database/DeviceManager.java
index 2157e738d..1eb90b7eb 100644
--- a/src/org/traccar/database/DeviceManager.java
+++ b/src/org/traccar/database/DeviceManager.java
@@ -16,7 +16,6 @@
 package org.traccar.database;
 
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.LinkedList;
@@ -26,12 +25,9 @@ import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicLong;
 
-import org.traccar.BaseProtocol;
 import org.traccar.Config;
 import org.traccar.Context;
 import org.traccar.helper.Log;
-import org.traccar.model.Command;
-import org.traccar.model.CommandType;
 import org.traccar.model.Device;
 import org.traccar.model.DeviceState;
 import org.traccar.model.DeviceTotalDistance;
@@ -55,8 +51,6 @@ public class DeviceManager extends BaseObjectManager<Device> implements Identity
 
     private final Map<Long, DeviceState> deviceStates = new ConcurrentHashMap<>();
 
-    private boolean fallbackToText;
-
     public DeviceManager(DataManager dataManager) {
         super(dataManager, Device.class);
         this.config = Context.getConfig();
@@ -68,7 +62,6 @@ public class DeviceManager extends BaseObjectManager<Device> implements Identity
         }
         dataRefreshDelay = config.getLong("database.refreshDelay", DEFAULT_REFRESH_DELAY) * 1000;
         lookupGroupsAttribute = config.getBoolean("deviceManager.lookupGroupsAttribute");
-        fallbackToText = config.getBoolean("command.fallbackToSms");
         refreshLastPositions();
     }
 
@@ -344,50 +337,6 @@ public class DeviceManager extends BaseObjectManager<Device> implements Identity
         }
     }
 
-    public void sendCommand(Command command) throws Exception {
-        long deviceId = command.getDeviceId();
-        if (command.getTextChannel()) {
-            Position lastPosition = getLastPosition(deviceId);
-            if (lastPosition != null) {
-                BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
-                protocol.sendTextCommand(getById(deviceId).getPhone(), command);
-            } else if (command.getType().equals(Command.TYPE_CUSTOM)) {
-                Context.getSmppManager().sendMessageSync(getById(deviceId).getPhone(),
-                        command.getString(Command.KEY_DATA), true);
-            } else {
-                throw new RuntimeException("Command " + command.getType() + " is not supported");
-            }
-        } else {
-            ActiveDevice activeDevice = Context.getConnectionManager().getActiveDevice(deviceId);
-            if (activeDevice != null) {
-                activeDevice.sendCommand(command);
-            } else {
-                if (fallbackToText) {
-                    command.setTextChannel(true);
-                    sendCommand(command);
-                } else {
-                    throw new RuntimeException("Device is not online");
-                }
-            }
-        }
-    }
-
-    public Collection<CommandType> getCommandTypes(long deviceId, boolean textChannel) {
-        List<CommandType> result = new ArrayList<>();
-        Position lastPosition = Context.getDeviceManager().getLastPosition(deviceId);
-        if (lastPosition != null) {
-            BaseProtocol protocol = Context.getServerManager().getProtocol(lastPosition.getProtocol());
-            Collection<String> commands;
-            commands = textChannel ? protocol.getSupportedTextCommands() : protocol.getSupportedDataCommands();
-            for (String commandKey : commands) {
-                result.add(new CommandType(commandKey));
-            }
-        } else {
-            result.add(new CommandType(Command.TYPE_CUSTOM));
-        }
-        return result;
-    }
-
     public DeviceState getDeviceState(long deviceId) {
         DeviceState deviceState = deviceStates.get(deviceId);
         if (deviceState == null) {
diff --git a/src/org/traccar/database/PermissionsManager.java b/src/org/traccar/database/PermissionsManager.java
index 0708cc5c9..0d9c780a6 100644
--- a/src/org/traccar/database/PermissionsManager.java
+++ b/src/org/traccar/database/PermissionsManager.java
@@ -20,6 +20,7 @@ import org.traccar.helper.Log;
 import org.traccar.model.Attribute;
 import org.traccar.model.BaseModel;
 import org.traccar.model.Calendar;
+import org.traccar.model.Command;
 import org.traccar.model.Device;
 import org.traccar.model.Driver;
 import org.traccar.model.Geofence;
@@ -136,24 +137,24 @@ public class PermissionsManager {
         }
     }
 
-    public boolean isAdmin(long userId) {
+    public boolean getUserAdmin(long userId) {
         User user = getUser(userId);
         return user != null && user.getAdmin();
     }
 
     public void checkAdmin(long userId) throws SecurityException {
-        if (!isAdmin(userId)) {
+        if (!getUserAdmin(userId)) {
             throw new SecurityException("Admin access required");
         }
     }
 
-    public boolean isManager(long userId) {
+    public boolean getUserManager(long userId) {
         User user = getUser(userId);
         return user != null && user.getUserLimit() != 0;
     }
 
     public void checkManager(long userId) throws SecurityException {
-        if (!isManager(userId)) {
+        if (!getUserManager(userId)) {
             throw new SecurityException("Manager access required");
         }
     }
@@ -176,7 +177,7 @@ public class PermissionsManager {
         int deviceLimit = getUser(userId).getDeviceLimit();
         if (deviceLimit != -1) {
             int deviceCount = 0;
-            if (isManager(userId)) {
+            if (getUserManager(userId)) {
                 deviceCount = Context.getDeviceManager().getManagedItems(userId).size();
             } else {
                 deviceCount = Context.getDeviceManager().getUserItems(userId).size();
@@ -187,28 +188,45 @@ public class PermissionsManager {
         }
     }
 
-    public boolean isReadonly(long userId) {
+    public boolean getUserReadonly(long userId) {
         User user = getUser(userId);
         return user != null && user.getReadonly();
     }
 
-    public boolean isDeviceReadonly(long userId) {
+    public boolean getUserDeviceReadonly(long userId) {
         User user = getUser(userId);
         return user != null && user.getDeviceReadonly();
     }
 
+    public boolean getUserLimitCommands(long userId) {
+        User user = getUser(userId);
+        return user != null && user.getLimitCommands();
+    }
+
     public void checkReadonly(long userId) throws SecurityException {
-        if (!isAdmin(userId) && (server.getReadonly() || isReadonly(userId))) {
+        if (!getUserAdmin(userId) && (server.getReadonly() || getUserReadonly(userId))) {
             throw new SecurityException("Account is readonly");
         }
     }
 
     public void checkDeviceReadonly(long userId) throws SecurityException {
-        if (!isAdmin(userId) && (server.getDeviceReadonly() || isDeviceReadonly(userId))) {
+        if (!getUserAdmin(userId) && (server.getDeviceReadonly() || getUserDeviceReadonly(userId))) {
             throw new SecurityException("Account is device readonly");
         }
     }
 
+    public void checkLimitCommands(long userId) throws SecurityException {
+        if (!getUserAdmin(userId) && (server.getLimitCommands() || getUserLimitCommands(userId))) {
+            throw new SecurityException("Account has limit sending commands");
+        }
+    }
+
+    public void checkUserDeviceCommand(long userId, long deviceId, long commandId) throws SecurityException {
+        if (!getUserAdmin(userId) && Context.getCommandsManager().checkDeviceCommand(deviceId, commandId)) {
+            throw new SecurityException("Command can not be sent to this device");
+        }
+    }
+
     public void checkUserEnabled(long userId) throws SecurityException {
         User user = getUser(userId);
         if (user == null) {
@@ -240,20 +258,20 @@ public class PermissionsManager {
             if (userId == after.getId()) {
                 checkAdmin(userId);
             }
-            if (!isAdmin(userId)) {
+            if (!getUserAdmin(userId)) {
                 checkManager(userId);
             }
         }
     }
 
     public void checkUser(long userId, long managedUserId) throws SecurityException {
-        if (userId != managedUserId && !isAdmin(userId)) {
+        if (userId != managedUserId && !getUserAdmin(userId)) {
             checkManager(userId, managedUserId);
         }
     }
 
     public void checkGroup(long userId, long groupId) throws SecurityException {
-        if (!getGroupPermissions(userId).contains(groupId) && !isAdmin(userId)) {
+        if (!getGroupPermissions(userId).contains(groupId) && !getUserAdmin(userId)) {
             checkManager(userId);
             for (long managedUserId : usersManager.getUserItems(userId)) {
                 if (getGroupPermissions(managedUserId).contains(groupId)) {
@@ -265,7 +283,7 @@ public class PermissionsManager {
     }
 
     public void checkDevice(long userId, long deviceId) throws SecurityException {
-        if (!Context.getDeviceManager().getUserItems(userId).contains(deviceId) && !isAdmin(userId)) {
+        if (!Context.getDeviceManager().getUserItems(userId).contains(deviceId) && !getUserAdmin(userId)) {
             checkManager(userId);
             for (long managedUserId : usersManager.getUserItems(userId)) {
                 if (Context.getDeviceManager().getUserItems(managedUserId).contains(deviceId)) {
@@ -277,7 +295,7 @@ public class PermissionsManager {
     }
 
     public void checkRegistration(long userId) {
-        if (!server.getRegistration() && !isAdmin(userId)) {
+        if (!server.getRegistration() && !getUserAdmin(userId)) {
             throw new SecurityException("Registration disabled");
         }
     }
@@ -300,11 +318,13 @@ public class PermissionsManager {
             manager = Context.getDriversManager();
         } else if (object.equals(Calendar.class)) {
             manager = Context.getCalendarManager();
+        } else if (object.equals(Command.class)) {
+            manager = Context.getCommandsManager();
         } else {
             throw new IllegalArgumentException("Unknown object type");
         }
 
-        if (manager != null && !manager.checkItemPermission(userId, objectId) && !isAdmin(userId)) {
+        if (manager != null && !manager.checkItemPermission(userId, objectId) && !getUserAdmin(userId)) {
             checkManager(userId);
             for (long managedUserId : usersManager.getManagedItems(userId)) {
                 if (manager.checkItemPermission(managedUserId, objectId)) {
@@ -322,6 +342,7 @@ public class PermissionsManager {
         Context.getCalendarManager().refreshUserItems();
         Context.getDriversManager().refreshUserItems();
         Context.getAttributesManager().refreshUserItems();
+        Context.getCommandsManager().refreshUserItems();
         if (Context.getNotificationManager() != null) {
             Context.getNotificationManager().refresh();
         }
@@ -333,6 +354,7 @@ public class PermissionsManager {
         }
         Context.getDriversManager().refreshExtendedPermissions();
         Context.getAttributesManager().refreshExtendedPermissions();
+        Context.getCommandsManager().refreshExtendedPermissions();
     }
 
     public void refreshPermissions(Permission permission) {
@@ -351,6 +373,8 @@ public class PermissionsManager {
                 Context.getAttributesManager().refreshUserItems();
             } else if (permission.getPropertyClass().equals(Calendar.class)) {
                 Context.getCalendarManager().refreshUserItems();
+            } else if (permission.getPropertyClass().equals(Command.class)) {
+                Context.getCommandsManager().refreshUserItems();
             }
         } else if (permission.getOwnerClass().equals(Device.class) || permission.getOwnerClass().equals(Group.class)) {
             if (permission.getPropertyClass().equals(Geofence.class) && Context.getGeofenceManager() != null) {
@@ -359,6 +383,8 @@ public class PermissionsManager {
                 Context.getDriversManager().refreshExtendedPermissions();
             } else if (permission.getPropertyClass().equals(Attribute.class)) {
                 Context.getAttributesManager().refreshExtendedPermissions();
+            } else if (permission.getPropertyClass().equals(Command.class)) {
+                Context.getCommandsManager().refreshExtendedPermissions();
             }
         }
     }
diff --git a/src/org/traccar/model/Command.java b/src/org/traccar/model/Command.java
index 6a48b14e9..67134dc7d 100644
--- a/src/org/traccar/model/Command.java
+++ b/src/org/traccar/model/Command.java
@@ -15,6 +15,8 @@
  */
 package org.traccar.model;
 
+import org.traccar.database.QueryIgnore;
+
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
 @JsonIgnoreProperties(ignoreUnknown = true)
@@ -85,4 +87,20 @@ public class Command extends Message {
         this.textChannel = textChannel;
     }
 
+    @QueryIgnore
+    @Override
+    public long getDeviceId() {
+        return super.getDeviceId();
+    }
+
+    private String description;
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
 }
diff --git a/src/org/traccar/model/Server.java b/src/org/traccar/model/Server.java
index bfe881479..072e85d55 100644
--- a/src/org/traccar/model/Server.java
+++ b/src/org/traccar/model/Server.java
@@ -147,4 +147,14 @@ public class Server extends ExtendedModel {
     public void setCoordinateFormat(String coordinateFormat) {
         this.coordinateFormat = coordinateFormat;
     }
+
+    private boolean limitCommands;
+
+    public boolean getLimitCommands() {
+        return limitCommands;
+    }
+
+    public void setLimitCommands(boolean limitCommands) {
+        this.limitCommands = limitCommands;
+    }
 }
diff --git a/src/org/traccar/model/User.java b/src/org/traccar/model/User.java
index 043c23036..5d89dcfae 100644
--- a/src/org/traccar/model/User.java
+++ b/src/org/traccar/model/User.java
@@ -210,6 +210,16 @@ public class User extends ExtendedModel {
         }
     }
 
+    private boolean limitCommands;
+
+    public boolean getLimitCommands() {
+        return limitCommands;
+    }
+
+    public void setLimitCommands(boolean limitCommands) {
+        this.limitCommands = limitCommands;
+    }
+
     @QueryIgnore
     public String getPassword() {
         return null;