| /* |
| * 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 "third_party/blink/renderer/modules/filesystem/dom_file_system.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "third_party/blink/public/platform/platform.h" |
| #include "third_party/blink/public/platform/web_security_origin.h" |
| #include "third_party/blink/renderer/core/probe/async_task_id.h" |
| #include "third_party/blink/renderer/core/probe/core_probes.h" |
| #include "third_party/blink/renderer/modules/filesystem/directory_entry.h" |
| #include "third_party/blink/renderer/modules/filesystem/dom_file_path.h" |
| #include "third_party/blink/renderer/modules/filesystem/file_entry.h" |
| #include "third_party/blink/renderer/modules/filesystem/file_system_callbacks.h" |
| #include "third_party/blink/renderer/modules/filesystem/file_system_dispatcher.h" |
| #include "third_party/blink/renderer/modules/filesystem/file_writer.h" |
| #include "third_party/blink/renderer/platform/weborigin/security_origin.h" |
| #include "third_party/blink/renderer/platform/wtf/functional.h" |
| #include "third_party/blink/renderer/platform/wtf/text/string_builder.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| void RunCallback(ExecutionContext* execution_context, |
| base::OnceClosure task, |
| std::unique_ptr<probe::AsyncTaskId> identifier) { |
| if (!execution_context) |
| return; |
| DCHECK(execution_context->IsContextThread()); |
| probe::AsyncTask async_task(execution_context, identifier.get()); |
| std::move(task).Run(); |
| } |
| |
| } // namespace |
| |
| DOMFileSystem* DOMFileSystem::CreateIsolatedFileSystem( |
| ExecutionContext* context, |
| const String& filesystem_id) { |
| if (filesystem_id.IsEmpty()) |
| return nullptr; |
| |
| 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 MakeGarbageCollected<DOMFileSystem>( |
| context, filesystem_name.ToString(), |
| mojom::blink::FileSystemType::kIsolated, KURL(root_url.ToString())); |
| } |
| |
| DOMFileSystem::DOMFileSystem(ExecutionContext* context, |
| const String& name, |
| mojom::blink::FileSystemType type, |
| const KURL& root_url) |
| : DOMFileSystemBase(context, name, type, root_url), |
| ExecutionContextClient(context), |
| number_of_pending_callbacks_(0), |
| root_entry_( |
| MakeGarbageCollected<DirectoryEntry>(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(ErrorCallback error_callback, |
| base::File::Error error) { |
| ReportError(GetExecutionContext(), std::move(error_callback), error); |
| } |
| |
| void DOMFileSystem::ReportError(ExecutionContext* execution_context, |
| ErrorCallback error_callback, |
| base::File::Error error) { |
| if (!error_callback) |
| return; |
| ScheduleCallback(execution_context, |
| WTF::Bind(std::move(error_callback), error)); |
| } |
| |
| void DOMFileSystem::CreateWriter( |
| const FileEntry* file_entry, |
| FileWriterCallbacks::SuccessCallback success_callback, |
| FileWriterCallbacks::ErrorCallback error_callback) { |
| DCHECK(file_entry); |
| |
| auto* file_writer = MakeGarbageCollected<FileWriter>(GetExecutionContext()); |
| auto callbacks = std::make_unique<FileWriterCallbacks>( |
| file_writer, std::move(success_callback), std::move(error_callback), |
| context_); |
| FileSystemDispatcher::From(context_).InitializeFileWriter( |
| CreateFileSystemURL(file_entry), std::move(callbacks)); |
| } |
| |
| void DOMFileSystem::CreateFile( |
| const FileEntry* file_entry, |
| SnapshotFileCallback::SuccessCallback success_callback, |
| SnapshotFileCallback::ErrorCallback error_callback) { |
| KURL file_system_url = CreateFileSystemURL(file_entry); |
| |
| FileSystemDispatcher::From(context_).CreateSnapshotFile( |
| file_system_url, |
| std::make_unique<SnapshotFileCallback>( |
| this, file_entry->name(), file_system_url, |
| std::move(success_callback), std::move(error_callback), context_)); |
| } |
| |
| void DOMFileSystem::ScheduleCallback(ExecutionContext* execution_context, |
| base::OnceClosure task) { |
| if (!execution_context) |
| return; |
| |
| DCHECK(execution_context->IsContextThread()); |
| |
| std::unique_ptr<probe::AsyncTaskId> identifier = |
| std::make_unique<probe::AsyncTaskId>(); |
| probe::AsyncTaskScheduled(execution_context, TaskNameForInstrumentation(), |
| identifier.get()); |
| execution_context->GetTaskRunner(TaskType::kFileReading) |
| ->PostTask(FROM_HERE, |
| WTF::Bind(&RunCallback, WrapWeakPersistent(execution_context), |
| std::move(task), std::move(identifier))); |
| } |
| |
| void DOMFileSystem::Trace(Visitor* visitor) const { |
| visitor->Trace(root_entry_); |
| DOMFileSystemBase::Trace(visitor); |
| ExecutionContextClient::Trace(visitor); |
| } |
| |
| } // namespace blink |