Java tutorial
package com.devicehive.auth; /* * #%L * DeviceHive Frontend Logic * %% * Copyright (C) 2016 DataArt * %% * 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. * #L% */ import com.devicehive.service.DeviceService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.Collection; import java.util.Set; @Service public class JwtCheckPermissionsHelper { @Autowired private DeviceService deviceService; public boolean checkPermissions(HivePrincipal hivePrincipal, HiveAction action, Object targetDomainObject) { Set<HiveAction> permittedActions = hivePrincipal.getActions(); return checkActionAllowed(action, permittedActions) && checkNetworksAllowed(hivePrincipal, targetDomainObject) && checkDeviceGuidsAllowed(hivePrincipal, targetDomainObject); } private boolean checkActionAllowed(HiveAction hiveAction, Set<HiveAction> permissions) { boolean result = false; if (permissions != null) result = permissions.contains(hiveAction); return result; } private boolean checkNetworksAllowed(HivePrincipal principal, Object targetDomainObject) { if (principal.areAllNetworksAvailable()) return true; else if (targetDomainObject instanceof Long) { return principal.getNetworkIds() != null && principal.getNetworkIds().contains((Long) targetDomainObject); } return true; } private boolean checkDeviceGuidsAllowed(HivePrincipal principal, Object targetDomainObject) { if (targetDomainObject instanceof String) { Set<Long> networks = principal.getNetworkIds(); Set<String> devices = principal.getDeviceGuids(); if (principal.areAllDevicesAvailable() && principal.areAllNetworksAvailable()) { return true; } else if (networks != null && principal.areAllDevicesAvailable()) { return networks.stream() .flatMap(n -> deviceService .list(null, null, n, null, null, null, null, false, null, null, null) .thenApply(Collection::stream).join()) .anyMatch(deviceVO -> deviceVO.getGuid().equals(targetDomainObject)); } else return networks != null && devices != null && devices.contains(targetDomainObject); } return true; } }