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/*
* Copyright 2015 - 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.sql.SQLException;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.traccar.helper.Log;
import org.traccar.model.DevicePermission;
import org.traccar.model.GroupPermission;
import org.traccar.model.Server;
import org.traccar.model.User;
public class PermissionsManager {
private final DataManager dataManager;
private Server server;
private final Map<Long, User> users = new HashMap<>();
private final Map<Long, Set<Long>> groupPermissions = new HashMap<>();
private final Map<Long, Set<Long>> devicePermissions = new HashMap<>();
public Set<Long> getGroupPermissions(long userId) {
if (!groupPermissions.containsKey(userId)) {
groupPermissions.put(userId, new HashSet<Long>());
}
return groupPermissions.get(userId);
}
public Set<Long> getDevicePermissions(long userId) {
if (!devicePermissions.containsKey(userId)) {
devicePermissions.put(userId, new HashSet<Long>());
}
return devicePermissions.get(userId);
}
public PermissionsManager(DataManager dataManager) {
this.dataManager = dataManager;
refresh();
}
public final void refresh() {
users.clear();
groupPermissions.clear();
devicePermissions.clear();
try {
server = dataManager.getServer();
for (User user : dataManager.getUsers()) {
users.put(user.getId(), user);
}
for (DevicePermission permission : dataManager.getDevicePermissions()) {
getDevicePermissions(permission.getUserId()).add(permission.getDeviceId());
}
for (GroupPermission permission : dataManager.getGroupPermissions()) {
getGroupPermissions(permission.getUserId()).add(permission.getGroupId());
}
} catch (SQLException error) {
Log.warning(error);
}
}
public boolean isAdmin(long userId) {
return users.containsKey(userId) && users.get(userId).getAdmin();
}
public void checkAdmin(long userId) throws SecurityException {
if (!isAdmin(userId)) {
throw new SecurityException("Admin access required");
}
}
public void checkUser(long userId, long otherUserId) throws SecurityException {
if (userId != otherUserId) {
checkAdmin(userId);
}
}
public void checkGroup(long userId, long groupId) throws SecurityException {
if (!getGroupPermissions(userId).contains(groupId)) {
throw new SecurityException("Group access denied");
}
}
public void checkDevice(long userId, long deviceId) throws SecurityException {
if (!getDevicePermissions(userId).contains(deviceId)) {
throw new SecurityException("Device access denied");
}
}
public void checkRegistration(long userId) {
if (!server.getRegistration() && !isAdmin(userId)) {
throw new SecurityException("Registration disabled");
}
}
public void checkReadonly(long userId) {
if (server.getReadonly() && !isAdmin(userId)) {
throw new SecurityException("Readonly user");
}
}
}
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