| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "modules/filesystem/DOMFileSystem.h" |
| |
| #include <memory> |
| #include "core/fileapi/BlobCallback.h" |
| #include "core/probe/CoreProbes.h" |
| #include "modules/filesystem/DOMFilePath.h" |
| #include "modules/filesystem/DirectoryEntry.h" |
| #include "modules/filesystem/FileEntry.h" |
| #include "modules/filesystem/FileSystemCallbacks.h" |
| #include "modules/filesystem/FileWriter.h" |
| #include "modules/filesystem/FileWriterBaseCallback.h" |
| #include "modules/filesystem/FileWriterCallback.h" |
| #include "modules/filesystem/MetadataCallback.h" |
| #include "platform/FileMetadata.h" |
| #include "platform/WebTaskRunner.h" |
| #include "platform/weborigin/SecurityOrigin.h" |
| #include "platform/wtf/text/StringBuilder.h" |
| #include "platform/wtf/text/WTFString.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebFileSystem.h" |
| #include "public/platform/WebFileSystemCallbacks.h" |
| #include "public/platform/WebSecurityOrigin.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| void RunCallback(ExecutionContext* execution_context, |
| std::unique_ptr<WTF::Closure> task) { |
| if (!execution_context) |
| return; |
| DCHECK(execution_context->IsContextThread()); |
| probe::AsyncTask async_task(execution_context, task.get()); |
| (*task)(); |
| } |
| |
| } // namespace |
| |
| // static |
| DOMFileSystem* DOMFileSystem::Create(ExecutionContext* context, |
| const String& name, |
| FileSystemType type, |
| const KURL& root_url) { |
| return new DOMFileSystem(context, name, type, root_url); |
| } |
| |
| DOMFileSystem* DOMFileSystem::CreateIsolatedFileSystem( |
| ExecutionContext* context, |
| const String& filesystem_id) { |
| if (filesystem_id.IsEmpty()) |
| return 0; |
| |
| StringBuilder filesystem_name; |
| filesystem_name.Append(Platform::Current()->FileSystemCreateOriginIdentifier( |
| WebSecurityOrigin(context->GetSecurityOrigin()))); |
| filesystem_name.Append(":Isolated_"); |
| filesystem_name.Append(filesystem_id); |
| |
| // The rootURL created here is going to be attached to each filesystem request |
| // and is to be validated each time the request is being handled. |
| StringBuilder root_url; |
| root_url.Append("filesystem:"); |
| root_url.Append(context->GetSecurityOrigin()->ToString()); |
| root_url.Append('/'); |
| root_url.Append(kIsolatedPathPrefix); |
| root_url.Append('/'); |
| root_url.Append(filesystem_id); |
| root_url.Append('/'); |
| |
| return DOMFileSystem::Create(context, filesystem_name.ToString(), |
| kFileSystemTypeIsolated, |
| KURL(kParsedURLString, root_url.ToString())); |
| } |
| |
| DOMFileSystem::DOMFileSystem(ExecutionContext* context, |
| const String& name, |
| FileSystemType type, |
| const KURL& root_url) |
| : DOMFileSystemBase(context, name, type, root_url), |
| ContextClient(context), |
| number_of_pending_callbacks_(0), |
| root_entry_(DirectoryEntry::Create(this, DOMFilePath::kRoot)) {} |
| |
| DirectoryEntry* DOMFileSystem::root() const { |
| return root_entry_.Get(); |
| } |
| |
| void DOMFileSystem::AddPendingCallbacks() { |
| ++number_of_pending_callbacks_; |
| } |
| |
| void DOMFileSystem::RemovePendingCallbacks() { |
| DCHECK_GT(number_of_pending_callbacks_, 0); |
| --number_of_pending_callbacks_; |
| } |
| |
| bool DOMFileSystem::HasPendingActivity() const { |
| DCHECK_GE(number_of_pending_callbacks_, 0); |
| return number_of_pending_callbacks_; |
| } |
| |
| void DOMFileSystem::ReportError(ErrorCallbackBase* error_callback, |
| FileError::ErrorCode file_error) { |
| ReportError(GetExecutionContext(), error_callback, file_error); |
| } |
| |
| void DOMFileSystem::ReportError(ExecutionContext* execution_context, |
| ErrorCallbackBase* error_callback, |
| FileError::ErrorCode file_error) { |
| if (!error_callback) |
| return; |
| ScheduleCallback(execution_context, |
| WTF::Bind(&ErrorCallbackBase::Invoke, |
| WrapPersistent(error_callback), file_error)); |
| } |
| |
| namespace { |
| |
| class ConvertToFileWriterCallback : public FileWriterBaseCallback { |
| public: |
| static ConvertToFileWriterCallback* Create(FileWriterCallback* callback) { |
| return new ConvertToFileWriterCallback(callback); |
| } |
| |
| DEFINE_INLINE_TRACE() { |
| visitor->Trace(callback_); |
| FileWriterBaseCallback::Trace(visitor); |
| } |
| |
| void handleEvent(FileWriterBase* file_writer_base) { |
| callback_->handleEvent(static_cast<FileWriter*>(file_writer_base)); |
| } |
| |
| private: |
| explicit ConvertToFileWriterCallback(FileWriterCallback* callback) |
| : callback_(callback) {} |
| Member<FileWriterCallback> callback_; |
| }; |
| |
| } // namespace |
| |
| void DOMFileSystem::CreateWriter(const FileEntry* file_entry, |
| FileWriterCallback* success_callback, |
| ErrorCallbackBase* error_callback) { |
| DCHECK(file_entry); |
| |
| if (!FileSystem()) { |
| ReportError(error_callback, FileError::kAbortErr); |
| return; |
| } |
| |
| FileWriter* file_writer = FileWriter::Create(GetExecutionContext()); |
| FileWriterBaseCallback* conversion_callback = |
| ConvertToFileWriterCallback::Create(success_callback); |
| std::unique_ptr<AsyncFileSystemCallbacks> callbacks = |
| FileWriterBaseCallbacks::Create(file_writer, conversion_callback, |
| error_callback, context_); |
| FileSystem()->CreateFileWriter(CreateFileSystemURL(file_entry), file_writer, |
| std::move(callbacks)); |
| } |
| |
| void DOMFileSystem::CreateFile(const FileEntry* file_entry, |
| BlobCallback* success_callback, |
| ErrorCallbackBase* error_callback) { |
| KURL file_system_url = CreateFileSystemURL(file_entry); |
| if (!FileSystem()) { |
| ReportError(error_callback, FileError::kAbortErr); |
| return; |
| } |
| |
| FileSystem()->CreateSnapshotFileAndReadMetadata( |
| file_system_url, |
| SnapshotFileCallback::Create(this, file_entry->name(), file_system_url, |
| success_callback, error_callback, context_)); |
| } |
| |
| void DOMFileSystem::ScheduleCallback(ExecutionContext* execution_context, |
| std::unique_ptr<WTF::Closure> task) { |
| DCHECK(execution_context->IsContextThread()); |
| probe::AsyncTaskScheduled(execution_context, TaskNameForInstrumentation(), |
| task.get()); |
| TaskRunnerHelper::Get(TaskType::kFileReading, execution_context) |
| ->PostTask(BLINK_FROM_HERE, |
| WTF::Bind(&RunCallback, WrapWeakPersistent(execution_context), |
| WTF::Passed(std::move(task)))); |
| } |
| |
| DEFINE_TRACE(DOMFileSystem) { |
| visitor->Trace(root_entry_); |
| DOMFileSystemBase::Trace(visitor); |
| ContextClient::Trace(visitor); |
| } |
| |
| } // namespace blink |
