1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_ 7 8 #include <queue> 9 #include <string> 10 #include <vector> 11 12 #include "base/basictypes.h" 13 #include "base/callback.h" 14 #include "base/memory/weak_ptr.h" 15 #include "content/browser/renderer_host/pepper/quota_reservation.h" 16 #include "content/common/content_export.h" 17 #include "ppapi/c/pp_file_info.h" 18 #include "ppapi/c/private/ppb_isolated_file_system_private.h" 19 #include "ppapi/host/host_message_context.h" 20 #include "ppapi/host/resource_host.h" 21 #include "ppapi/shared_impl/file_growth.h" 22 #include "url/gurl.h" 23 #include "webkit/browser/fileapi/file_system_context.h" 24 25 namespace content { 26 27 class BrowserPpapiHost; 28 class PepperFileIOHost; 29 30 class CONTENT_EXPORT PepperFileSystemBrowserHost 31 : public ppapi::host::ResourceHost, 32 public base::SupportsWeakPtr<PepperFileSystemBrowserHost> { 33 public: 34 // Creates a new PepperFileSystemBrowserHost for a file system of a given 35 // |type|. The host must be opened before use. 36 PepperFileSystemBrowserHost(BrowserPpapiHost* host, 37 PP_Instance instance, 38 PP_Resource resource, 39 PP_FileSystemType type); 40 virtual ~PepperFileSystemBrowserHost(); 41 42 // Opens the PepperFileSystemBrowserHost to use an existing file system at the 43 // given |root_url|. The file system at |root_url| must already be opened and 44 // have the type given by GetType(). 45 // Calls |callback| when complete. 46 void OpenExisting(const GURL& root_url, const base::Closure& callback); 47 48 // ppapi::host::ResourceHost overrides. 49 virtual int32_t OnResourceMessageReceived( 50 const IPC::Message& msg, 51 ppapi::host::HostMessageContext* context) OVERRIDE; 52 virtual bool IsFileSystemHost() OVERRIDE; 53 54 // Supports FileRefs direct access on the host side. 55 PP_FileSystemType GetType() const { return type_; } 56 bool IsOpened() const { return opened_; } 57 GURL GetRootUrl() const { return root_url_; } 58 scoped_refptr<fileapi::FileSystemContext> GetFileSystemContext() const { 59 return file_system_context_; 60 } 61 62 // Supports FileIOs direct access on the host side. 63 // Non-NULL only for PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY}. 64 fileapi::FileSystemOperationRunner* GetFileSystemOperationRunner() const { 65 return file_system_operation_runner_.get(); 66 } 67 bool ChecksQuota() const { return quota_reservation_ != NULL; } 68 // Opens a file for writing with quota checks. Returns the file size in the 69 // callback. 70 typedef base::Callback<void(int64_t)> OpenQuotaFileCallback; 71 void OpenQuotaFile(PepperFileIOHost* file_io_host, 72 const fileapi::FileSystemURL& url, 73 const OpenQuotaFileCallback& callback); 74 // Closes the file. This must be called after OpenQuotaFile and before the 75 // PepperFileIOHost is destroyed. 76 void CloseQuotaFile(PepperFileIOHost* file_io_host, 77 const ppapi::FileGrowth& file_growth); 78 79 private: 80 friend class PepperFileSystemBrowserHostTest; 81 82 void OpenExistingFileSystem( 83 const base::Closure& callback, 84 scoped_refptr<fileapi::FileSystemContext> file_system_context); 85 void OpenFileSystem( 86 ppapi::host::ReplyMessageContext reply_context, 87 fileapi::FileSystemType file_system_type, 88 scoped_refptr<fileapi::FileSystemContext> file_system_context); 89 void OpenFileSystemComplete(ppapi::host::ReplyMessageContext reply_context, 90 const GURL& root, 91 const std::string& name, 92 base::File::Error error); 93 void OpenIsolatedFileSystem( 94 ppapi::host::ReplyMessageContext reply_context, 95 const std::string& fsid, 96 PP_IsolatedFileSystemType_Private type, 97 scoped_refptr<fileapi::FileSystemContext> file_system_context); 98 void OpenPluginPrivateFileSystem( 99 ppapi::host::ReplyMessageContext reply_context, 100 const std::string& fsid, 101 scoped_refptr<fileapi::FileSystemContext> file_system_context); 102 void OpenPluginPrivateFileSystemComplete( 103 ppapi::host::ReplyMessageContext reply_context, 104 const std::string& fsid, 105 base::File::Error error); 106 107 int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context, 108 int64_t expected_size); 109 int32_t OnHostMsgInitIsolatedFileSystem( 110 ppapi::host::HostMessageContext* context, 111 const std::string& fsid, 112 PP_IsolatedFileSystemType_Private type); 113 int32_t OnHostMsgReserveQuota(ppapi::host::HostMessageContext* context, 114 int64_t amount, 115 const ppapi::FileGrowthMap& file_growths); 116 117 void SendReplyForFileSystem(ppapi::host::ReplyMessageContext reply_context, 118 int32_t pp_error); 119 void SendReplyForIsolatedFileSystem( 120 ppapi::host::ReplyMessageContext reply_context, 121 const std::string& fsid, 122 int32_t error); 123 124 void SetFileSystemContext( 125 scoped_refptr<fileapi::FileSystemContext> file_system_context); 126 127 bool ShouldCreateQuotaReservation() const; 128 void CreateQuotaReservation(const base::Closure& callback); 129 void GotQuotaReservation(const base::Closure& callback, 130 scoped_refptr<QuotaReservation> quota_reservation); 131 132 void GotReservedQuota(ppapi::host::ReplyMessageContext reply_context, 133 int64_t amount, 134 const ppapi::FileSizeMap& file_sizes); 135 void DidOpenQuotaFile(PP_Resource file_io_resource, 136 const OpenQuotaFileCallback& callback, 137 int64_t max_written_offset); 138 139 std::string GetPluginMimeType() const; 140 141 // Returns plugin ID generated from plugin's MIME type. 142 std::string GeneratePluginId(const std::string& mime_type) const; 143 144 BrowserPpapiHost* browser_ppapi_host_; 145 146 PP_FileSystemType type_; 147 bool called_open_; // whether open has been called. 148 bool opened_; // whether open succeeded. 149 GURL root_url_; 150 scoped_refptr<fileapi::FileSystemContext> file_system_context_; 151 152 scoped_ptr<fileapi::FileSystemOperationRunner> file_system_operation_runner_; 153 154 // Used only for file systems with quota. 155 // When a PepperFileIOHost calls OpenQuotaFile, we add the id and a non-owning 156 // pointer to this map. CloseQuotaFile must be called when before the host is 157 // destroyed. 158 typedef std::map<int32_t, PepperFileIOHost*> FileMap; 159 FileMap files_; 160 int64_t reserved_quota_; 161 bool reserving_quota_; 162 // Access only on the FileSystemContext's default_file_task_runner(). 163 scoped_refptr<QuotaReservation> quota_reservation_; 164 165 std::string fsid_; // used only for isolated filesystems. 166 167 base::WeakPtrFactory<PepperFileSystemBrowserHost> weak_factory_; 168 169 DISALLOW_COPY_AND_ASSIGN(PepperFileSystemBrowserHost); 170 }; 171 172 } // namespace content 173 174 #endif // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_ 175
