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/*
* 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
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