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 FILE_ACCESS_HELPER_H 17 #define FILE_ACCESS_HELPER_H 18 19 #include <functional> 20 #include <unordered_map> 21 #include <string> 22 #include <vector> 23 #include <utility> 24 25 #include "bundle_mgr_interface.h" 26 #include "context.h" 27 #include "file_access_ext_connection.h" 28 #include "file_access_extension_info.h" 29 #include "file_access_notify_agent.h" 30 #include "ifile_access_ext_base.h" 31 #include "inotify_callback.h" 32 #include "iremote_object.h" 33 #include "refbase.h" 34 #include "uri.h" 35 #include "want.h" 36 37 using Uri = OHOS::Uri; 38 39 namespace OHOS { 40 namespace FileAccessFwk { 41 using string = std::string; 42 43 namespace { 44 static const std::string SCHEME_NAME = "datashare"; 45 static const std::string MEDIA_BNUDLE_NAME_ALIAS = "media"; 46 static const std::string MEDIA_BNUDLE_NAME = "com.ohos.medialibrary.medialibrarydata"; 47 static const int32_t READ = 0; 48 static const int32_t WRITE = 1; 49 static const int32_t WRITE_READ = 2; 50 } 51 52 struct ConnectInfo { 53 AAFwk::Want want = {}; 54 sptr<FileAccessExtConnection> fileAccessExtConnection = nullptr; 55 }; 56 57 class FileAccessHelper final : public std::enable_shared_from_this<FileAccessHelper> { 58 public: 59 ~FileAccessHelper() = default; 60 // get all ability want info 61 static int GetRegisteredFileAccessExtAbilityInfo(std::vector<AAFwk::Want> &wantVec); 62 // create and connect all ability 63 static std::pair<std::shared_ptr<FileAccessHelper>, int> 64 Creator(const std::shared_ptr<OHOS::AbilityRuntime::Context> &context); 65 // create and connect with want, if created, only connect with want 66 static std::pair<std::shared_ptr<FileAccessHelper>, int> 67 Creator(const std::shared_ptr<OHOS::AbilityRuntime::Context> &context, const std::vector<AAFwk::Want> &wants); 68 static std::shared_ptr<FileAccessHelper> Creator(const sptr<IRemoteObject> &token, 69 const std::vector<AAFwk::Want> &wants); 70 71 bool Release(); 72 int Access(Uri &uri, bool &isExist); 73 int OpenFile(Uri &uri, const int flags, int &fd); 74 int CreateFile(Uri &parent, const std::string &displayName, Uri &newFile); 75 int Mkdir(Uri &parent, const std::string &displayName, Uri &newDir); 76 int Delete(Uri &selectFile); 77 int Move(Uri &sourceFile, Uri &targetParent, Uri &newFile); 78 int Rename(Uri &sourceFile, const std::string &displayName, Uri &newFile); 79 int ListFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount, const FileFilter &filter, 80 std::vector<FileInfo> &fileInfoVec); 81 int ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount, const FileFilter &filter, 82 std::vector<FileInfo> &fileInfoVec); 83 int UriToFileInfo(Uri &selectFile, FileInfo &fileInfo); 84 int GetRoots(std::vector<RootInfo> &rootInfoVec); 85 int On(std::shared_ptr<INotifyCallback> &callback); 86 int Off(); 87 private: 88 sptr<IFileAccessExtBase> GetProxyByUri(Uri &uri); 89 bool GetProxy(); 90 static sptr<AppExecFwk::IBundleMgr> GetBundleMgrProxy(); 91 FileAccessHelper(const std::shared_ptr<OHOS::AbilityRuntime::Context> &context, 92 const std::unordered_map<std::string, std::shared_ptr<ConnectInfo>> &cMap); 93 FileAccessHelper(const sptr<IRemoteObject> &token, 94 const std::unordered_map<std::string, std::shared_ptr<ConnectInfo>> &cMap); 95 96 void AddFileAccessDeathRecipient(const sptr<IRemoteObject> &token); 97 void OnSchedulerDied(const wptr<IRemoteObject> &remote); 98 99 std::shared_ptr<ConnectInfo> GetConnectInfo(const std::string &bundleName); 100 101 sptr<IRemoteObject> token_ = nullptr; 102 std::unordered_map<std::string, std::shared_ptr<ConnectInfo>> cMap_; 103 104 static std::vector<AAFwk::Want> wants_; 105 static std::string GetKeyOfWants(const AAFwk::Want &want); 106 107 sptr<IRemoteObject::DeathRecipient> callerDeathRecipient_ = nullptr; 108 109 std::mutex notifyAgentMutex_; 110 sptr<IFileAccessNotify> notifyAgent_ = nullptr; 111 }; 112 113 class FileAccessDeathRecipient : public IRemoteObject::DeathRecipient { 114 public: 115 using RemoteDiedHandler = std::function<void(const wptr<IRemoteObject> &)>; 116 explicit FileAccessDeathRecipient(RemoteDiedHandler handler); 117 virtual ~FileAccessDeathRecipient(); 118 virtual void OnRemoteDied(const wptr<IRemoteObject> &remote); 119 120 private: 121 RemoteDiedHandler handler_; 122 }; 123 } // namespace FileAccessFwk 124 } // namespace OHOS 125 #endif // FILE_ACCESS_HELPER_H 126