1 /* 2 * Copyright (c) 2024-2024 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 #ifndef CAMERA_PRIVACY_H 16 #define CAMERA_PRIVACY_H 17 18 #include <refbase.h> 19 #include <memory> 20 #include "camera_util.h" 21 #include "accesstoken_kit.h" 22 #include "perm_state_change_callback_customize.h" 23 #include "privacy_error.h" 24 #include "privacy_kit.h" 25 #include "state_customized_cbk.h" 26 27 #define CAMERA_TAG ".camera" 28 29 namespace OHOS { 30 namespace CameraStandard { 31 static const int32_t WAIT_RELEASE_STREAM_MS = 500; // 500ms 32 static const int32_t WAIT_RELEASE_STREAM_MS_FOR_SYSTEM_CAMERA = 1500; // 1500ms 33 class HCameraDevice; 34 class PermissionStatusChangeCb : public Security::AccessToken::PermStateChangeCallbackCustomize { 35 public: PermissionStatusChangeCb(const Security::AccessToken::PermStateChangeScope & scopeInfo)36 explicit PermissionStatusChangeCb(const Security::AccessToken::PermStateChangeScope& scopeInfo) 37 : PermStateChangeCallbackCustomize(scopeInfo) {} 38 virtual ~PermissionStatusChangeCb() = default; 39 void PermStateChangeCallback(Security::AccessToken::PermStateChangeInfo& result) override; 40 }; 41 42 class CameraUseStateChangeCb : public Security::AccessToken::StateCustomizedCbk { 43 public: CameraUseStateChangeCb()44 explicit CameraUseStateChangeCb() {} 45 virtual ~CameraUseStateChangeCb() = default; 46 void StateChangeNotify(Security::AccessToken::AccessTokenID tokenId, bool isShowing) override; 47 }; 48 49 class CameraPrivacy : public RefBase { 50 public: CameraPrivacy(uint32_t callingTokenId,int32_t pid)51 explicit CameraPrivacy(uint32_t callingTokenId, int32_t pid) : pid_(pid), callerToken_(callingTokenId) {} 52 ~CameraPrivacy(); 53 bool RegisterPermissionCallback(); 54 void UnregisterPermissionCallback(); 55 bool StartUsingPermissionCallback(); 56 void StopUsingPermissionCallback(); 57 bool AddCameraPermissionUsedRecord(); 58 bool IsAllowUsingCamera(); 59 void SetClientName(std::string clientName); 60 GetClientName()61 inline std::string GetClientName() 62 { 63 return clientName_; 64 } 65 WaitFor(bool isSystemCamera)66 inline std::cv_status WaitFor(bool isSystemCamera) 67 { 68 std::unique_lock<std::mutex> lock(canCloseMutex_); 69 int32_t waitReleaseStreamMs = isSystemCamera ? WAIT_RELEASE_STREAM_MS_FOR_SYSTEM_CAMERA : 70 WAIT_RELEASE_STREAM_MS; 71 return canClose_.wait_for(lock, std::chrono::milliseconds(waitReleaseStreamMs)); 72 } 73 Notify()74 inline void Notify() 75 { 76 std::lock_guard<std::mutex> lock(canCloseMutex_); 77 canClose_.notify_one(); 78 } 79 80 private: 81 int32_t pid_; 82 uint32_t callerToken_; 83 std::string clientName_; 84 std::condition_variable canClose_; 85 std::mutex canCloseMutex_; 86 std::mutex permissionCbMutex_; 87 std::mutex cameraUseCbMutex_; 88 std::shared_ptr<PermissionStatusChangeCb> permissionCallbackPtr_; 89 std::shared_ptr<CameraUseStateChangeCb> cameraUseCallbackPtr_; 90 }; 91 } // namespace CameraStandard 92 } // namespace OHOS 93 #endif // CAMERA_PRIVACY_H