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content / browser / file_system_access / file_system_access_file_writer_impl.cc [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/file_system_access/file_system_access_file_writer_impl.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/file_system_access/file_system_access_error.h"
#include "content/browser/file_system_access/file_system_access_manager_impl.h"
#include "content/browser/file_system_access/file_system_access_safe_move_helper.h"
#include "storage/browser/file_system/file_system_context.h"
#include "storage/browser/file_system/file_system_operation.h"
#include "storage/browser/file_system/file_system_operation_runner.h"
#include "third_party/blink/public/common/features_generated.h"
using blink::mojom::FileSystemAccessStatus;
using storage::FileSystemOperation;
using storage::FileSystemOperationRunner;
namespace content {
struct FileSystemAccessFileWriterImpl::WriteState {
WriteCallback callback;
uint64_t bytes_written = 0;
};
FileSystemAccessFileWriterImpl::FileSystemAccessFileWriterImpl(
FileSystemAccessManagerImpl* manager,
base::PassKey<FileSystemAccessManagerImpl> pass_key,
const BindingContext& context,
const storage::FileSystemURL& url,
const storage::FileSystemURL& swap_url,
scoped_refptr<FileSystemAccessLockManager::LockHandle> lock,
scoped_refptr<FileSystemAccessLockManager::LockHandle> swap_lock,
const SharedHandleState& handle_state,
mojo::PendingReceiver<blink::mojom::FileSystemAccessFileWriter> receiver,
bool has_transient_user_activation,
bool auto_close,
download::QuarantineConnectionCallback quarantine_connection_callback)
: FileSystemAccessHandleBase(manager, context, url, handle_state),
receiver_(this, std::move(receiver)),
swap_url_(swap_url),
lock_(std::move(lock)),
swap_lock_(std::move(swap_lock)),
quarantine_connection_callback_(
std::move(quarantine_connection_callback)),
has_transient_user_activation_(has_transient_user_activation),
auto_close_(auto_close) {
CHECK_EQ(swap_url.type(), url.type());
CHECK(swap_lock_->IsExclusive());
receiver_.set_disconnect_handler(base::BindOnce(
&FileSystemAccessFileWriterImpl::OnDisconnect, base::Unretained(this)));
}
FileSystemAccessFileWriterImpl::~FileSystemAccessFileWriterImpl() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (should_purge_swap_file_on_destruction_) {
manager()->DoFileSystemOperation(
FROM_HERE, &FileSystemOperationRunner::RemoveFile,
base::BindOnce(
[](const storage::FileSystemURL& swap_url,
base::File::Error result) {
if (result != base::File::FILE_OK &&
result != base::File::FILE_ERROR_NOT_FOUND) {
DLOG(ERROR) << "Error Deleting Swap File, status: "
<< base::File::ErrorToString(result)
<< " path: " << swap_url.path();
}
},
swap_url()),
swap_url());
}
}
void FileSystemAccessFileWriterImpl::Write(
uint64_t offset,
mojo::ScopedDataPipeConsumerHandle stream,
WriteCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
RunWithWritePermission(
base::BindOnce(&FileSystemAccessFileWriterImpl::WriteImpl,
weak_factory_.GetWeakPtr(), offset, std::move(stream)),
base::BindOnce([](blink::mojom::FileSystemAccessErrorPtr result,
WriteCallback callback) {
std::move(callback).Run(std::move(result),
/*bytes_written=*/0);
}),
std::move(callback));
}
void FileSystemAccessFileWriterImpl::Truncate(uint64_t length,
TruncateCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
RunWithWritePermission(
base::BindOnce(&FileSystemAccessFileWriterImpl::TruncateImpl,
weak_factory_.GetWeakPtr(), length),
base::BindOnce([](blink::mojom::FileSystemAccessErrorPtr result,
TruncateCallback callback) {
std::move(callback).Run(std::move(result));
}),
std::move(callback));
}
void FileSystemAccessFileWriterImpl::Close(CloseCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
RunWithWritePermission(
base::BindOnce(&FileSystemAccessFileWriterImpl::CloseImpl,
weak_factory_.GetWeakPtr()),
base::BindOnce([](blink::mojom::FileSystemAccessErrorPtr result,
CloseCallback callback) {
std::move(callback).Run(std::move(result));
}),
std::move(callback));
}
void FileSystemAccessFileWriterImpl::Abort(AbortCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
RunWithWritePermission(
base::BindOnce(&FileSystemAccessFileWriterImpl::AbortImpl,
weak_factory_.GetWeakPtr()),
base::BindOnce([](blink::mojom::FileSystemAccessErrorPtr result,
AbortCallback callback) {
std::move(callback).Run(std::move(result));
}),
std::move(callback));
}
// Do not call this method if `close_callback_` is not set.
void FileSystemAccessFileWriterImpl::CallCloseCallbackAndDeleteThis(
blink::mojom::FileSystemAccessErrorPtr result) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
should_purge_swap_file_on_destruction_ =
result->status != blink::mojom::FileSystemAccessStatus::kOk;
std::move(close_callback_).Run(std::move(result));
// `this` is deleted after this call.
manager()->RemoveFileWriter(this);
}
void FileSystemAccessFileWriterImpl::OnDisconnect() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
receiver_.reset();
if (is_close_pending()) {
// Mojo connection lost while Close() in progress.
return;
}
if (auto_close_) {
// Close the Writer. `this` is deleted via
// CallCloseCallbackAndDeleteThis when Close() finishes.
Close(base::BindOnce([](blink::mojom::FileSystemAccessErrorPtr result) {
if (result->status != blink::mojom::FileSystemAccessStatus::kOk) {
DLOG(ERROR) << "AutoClose failed with result:"
<< base::File::ErrorToString(result->file_error);
}
}));
return;
}
// Mojo connection severed before Close() called. Destroy `this`.
manager()->RemoveFileWriter(this);
}
void FileSystemAccessFileWriterImpl::WriteImpl(
uint64_t offset,
mojo::ScopedDataPipeConsumerHandle stream,
WriteCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_EQ(GetWritePermissionStatus(),
blink::mojom::PermissionStatus::GRANTED);
if (is_close_pending()) {
std::move(callback).Run(
file_system_access_error::FromStatus(
FileSystemAccessStatus::kInvalidState,
"An attempt was made to write to a closing writer."),
/*bytes_written=*/0);
return;
}
manager()->DoFileSystemOperation(
FROM_HERE, &FileSystemOperationRunner::WriteStream,
base::BindRepeating(&FileSystemAccessFileWriterImpl::DidWrite,
weak_factory_.GetWeakPtr(),
base::Owned(new WriteState{std::move(callback)})),
swap_url(), std::move(stream), offset);
}
void FileSystemAccessFileWriterImpl::DidWrite(WriteState* state,
base::File::Error result,
int64_t bytes,
bool complete) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK(state);
state->bytes_written += bytes;
if (complete) {
std::move(state->callback)
.Run(file_system_access_error::FromFileError(result),
state->bytes_written);
}
}
void FileSystemAccessFileWriterImpl::TruncateImpl(uint64_t length,
TruncateCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_EQ(GetWritePermissionStatus(),
blink::mojom::PermissionStatus::GRANTED);
if (is_close_pending()) {
std::move(callback).Run(file_system_access_error::FromStatus(
FileSystemAccessStatus::kInvalidState,
"An attempt was made to write to a closing writer."));
return;
}
manager()->DoFileSystemOperation(
FROM_HERE, &FileSystemOperationRunner::Truncate,
base::BindOnce(
[](TruncateCallback callback, base::File::Error result) {
std::move(callback).Run(
file_system_access_error::FromFileError(result));
},
std::move(callback)),
swap_url(), length);
}
void FileSystemAccessFileWriterImpl::CloseImpl(CloseCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_EQ(GetWritePermissionStatus(),
blink::mojom::PermissionStatus::GRANTED);
if (is_close_pending()) {
std::move(callback).Run(file_system_access_error::FromStatus(
FileSystemAccessStatus::kInvalidState,
"An attempt was made to close an already closing writer."));
return;
}
close_callback_ = std::move(callback);
auto file_system_access_safe_move_helper =
std::make_unique<FileSystemAccessSafeMoveHelper>(
manager()->AsWeakPtr(), context(),
/*source_url=*/swap_url(),
/*dest_url=*/url(),
FileSystemOperation::CopyOrMoveOptionSet(
{FileSystemOperation::CopyOrMoveOption::
kPreserveDestinationPermissions}),
std::move(quarantine_connection_callback_),
has_transient_user_activation_);
// Allows the unique pointer to be bound to the callback so the helper stays
// alive until the operation completes.
FileSystemAccessSafeMoveHelper* raw_helper =
file_system_access_safe_move_helper.get();
raw_helper->Start(
base::BindOnce(&FileSystemAccessFileWriterImpl::DidReplaceSwapFile,
weak_factory_.GetWeakPtr(),
std::move(file_system_access_safe_move_helper)));
}
void FileSystemAccessFileWriterImpl::AbortImpl(AbortCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (is_close_pending()) {
std::move(callback).Run(file_system_access_error::FromStatus(
FileSystemAccessStatus::kInvalidState,
"An attempt was made to abort an already closing writer."));
return;
}
auto_close_ = false;
std::move(callback).Run(file_system_access_error::Ok());
// `this` is deleted after this call.
manager()->RemoveFileWriter(this);
}
void FileSystemAccessFileWriterImpl::DidReplaceSwapFile(
std::unique_ptr<FileSystemAccessSafeMoveHelper> /*move_helper*/,
blink::mojom::FileSystemAccessErrorPtr result) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (result->status != FileSystemAccessStatus::kOk) {
DLOG(ERROR) << "Swap file move operation failed source: "
<< swap_url().path() << " dest: " << url().path()
<< " error: " << base::File::ErrorToString(result->file_error);
CallCloseCallbackAndDeleteThis(std::move(result));
return;
}
CallCloseCallbackAndDeleteThis(file_system_access_error::Ok());
}
base::WeakPtr<FileSystemAccessHandleBase>
FileSystemAccessFileWriterImpl::AsWeakPtr() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return weak_factory_.GetWeakPtr();
}
} // namespace content