1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef IPC_COMMON_H 17 #define IPC_COMMON_H 18 19 #include <cinttypes> 20 #include <iremote_stub.h> 21 #include <optional> 22 #include <string> 23 24 #include "nocopyable.h" 25 26 namespace OHOS { 27 namespace UserIam { 28 namespace UserAuth { 29 enum Permission { 30 MANAGE_USER_IDM_PERMISSION, 31 USE_USER_IDM_PERMISSION, 32 ACCESS_USER_AUTH_INTERNAL_PERMISSION, 33 ACCESS_BIOMETRIC_PERMISSION, 34 ACCESS_AUTH_RESPOOL, 35 ENFORCE_USER_IDM, 36 }; 37 38 class IpcCommon final : public NoCopyable { 39 public: 40 using Recipient = std::function<void()>; 41 static int32_t GetCallingUserId(IPCObjectStub &stub, int32_t &userId); 42 static int32_t GetActiveUserId(std::optional<int32_t> &userId); 43 static bool CheckPermission(IPCObjectStub &stub, Permission permission); 44 static uint32_t GetAccessTokenId(IPCObjectStub &stub); 45 class PeerDeathRecipient final : public IPCObjectProxy::DeathRecipient { 46 public: PeerDeathRecipient(Recipient && recipient)47 explicit PeerDeathRecipient(Recipient &&recipient) : recipient_(std::forward<Recipient>(recipient)) 48 { 49 } 50 ~PeerDeathRecipient() override = default; OnRemoteDied(const wptr<IRemoteObject> & object)51 void OnRemoteDied(const wptr<IRemoteObject> &object) override 52 { 53 if (auto remote = object.promote(); !remote) { 54 return; 55 } 56 if (recipient_) { 57 recipient_(); 58 } 59 }; 60 61 private: 62 Recipient recipient_; 63 }; 64 65 private: 66 static bool CheckNativeCallingProcessWhiteList(IPCObjectStub &stub); 67 static bool CheckDirectCallerAndFirstCallerIfSet(IPCObjectStub &stub, const std::string &permission); 68 static bool CheckDirectCaller(IPCObjectStub &stub, const std::string &permission); 69 }; 70 } // namespace UserAuth 71 } // namespace UserIam 72 } // namespace OHOS 73 #endif // IPC_COMMON_H