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content / browser / service_worker / service_worker_installed_script_reader.cc [blame]
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "content/browser/service_worker/service_worker_installed_script_reader.h"
#include <utility>
#include "base/containers/span.h"
#include "base/functional/bind.h"
#include "base/memory/ref_counted.h"
#include "base/task/sequenced_task_runner.h"
#include "base/trace_event/trace_event.h"
#include "content/browser/service_worker/service_worker_metrics.h"
#include "net/http/http_response_headers.h"
#include "services/network/public/cpp/net_adapters.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/blob/blob_utils.h"
namespace content {
class ServiceWorkerInstalledScriptReader::MetaDataSender {
public:
MetaDataSender(scoped_refptr<net::IOBufferWithSize> meta_data,
mojo::ScopedDataPipeProducerHandle handle)
: meta_data_(std::move(meta_data)),
bytes_sent_(0),
handle_(std::move(handle)),
watcher_(FROM_HERE,
mojo::SimpleWatcher::ArmingPolicy::AUTOMATIC,
base::SequencedTaskRunner::GetCurrentDefault()) {}
void Start(base::OnceCallback<void(bool /* success */)> callback) {
callback_ = std::move(callback);
watcher_.Watch(handle_.get(), MOJO_HANDLE_SIGNAL_WRITABLE,
base::BindRepeating(&MetaDataSender::OnWritable,
weak_factory_.GetWeakPtr()));
}
void OnWritable(MojoResult) {
// It isn't necessary to handle MojoResult here since WriteDataRaw()
// returns an equivalent error.
base::span<const uint8_t> bytes_to_write =
meta_data_->span().subspan(bytes_sent_);
size_t actually_written_bytes = 0;
TRACE_EVENT2(
"ServiceWorker",
"ServiceWorkerInstalledScriptReader::MetaDataSender::OnWritable",
"meta_data size", meta_data_->size(), "bytes_sent_", bytes_sent_);
MojoResult rv = handle_->WriteData(
bytes_to_write, MOJO_WRITE_DATA_FLAG_NONE, actually_written_bytes);
switch (rv) {
case MOJO_RESULT_INVALID_ARGUMENT:
case MOJO_RESULT_OUT_OF_RANGE:
case MOJO_RESULT_BUSY:
NOTREACHED_IN_MIGRATION();
return;
case MOJO_RESULT_FAILED_PRECONDITION:
OnCompleted(false);
return;
case MOJO_RESULT_SHOULD_WAIT:
return;
case MOJO_RESULT_OK:
break;
default:
// mojo::WriteDataRaw() should not return any other values.
OnCompleted(false);
return;
}
bytes_sent_ += actually_written_bytes;
TRACE_EVENT2(
"ServiceWorker",
"ServiceWorkerInstalledScriptReader::MetaDataSender::OnWritable",
"meta_data size", meta_data_->size(), "new bytes_sent_", bytes_sent_);
if (meta_data_->size() == bytes_sent_)
OnCompleted(true);
}
void OnCompleted(bool success) {
TRACE_EVENT0(
"ServiceWorker",
"ServiceWorkerInstalledScriptReader::MetaDataSender::OnComplete");
watcher_.Cancel();
handle_.reset();
std::move(callback_).Run(success);
}
private:
base::OnceCallback<void(bool /* success */)> callback_;
scoped_refptr<net::IOBufferWithSize> meta_data_;
int64_t bytes_sent_;
mojo::ScopedDataPipeProducerHandle handle_;
mojo::SimpleWatcher watcher_;
base::WeakPtrFactory<MetaDataSender> weak_factory_{this};
};
ServiceWorkerInstalledScriptReader::ServiceWorkerInstalledScriptReader(
mojo::Remote<storage::mojom::ServiceWorkerResourceReader> reader,
Client* client)
: reader_(std::move(reader)), client_(client) {
DCHECK(reader_.is_connected());
reader_.set_disconnect_handler(base::BindOnce(
&ServiceWorkerInstalledScriptReader::OnReaderDisconnected, AsWeakPtr()));
}
ServiceWorkerInstalledScriptReader::~ServiceWorkerInstalledScriptReader() {}
void ServiceWorkerInstalledScriptReader::Start() {
TRACE_EVENT0("ServiceWorker", "ServiceWorkerInstalledScriptReader::Start");
DCHECK(reader_.is_connected());
reader_->ReadResponseHead(base::BindOnce(
&ServiceWorkerInstalledScriptReader::OnReadResponseHeadComplete,
AsWeakPtr()));
}
void ServiceWorkerInstalledScriptReader::OnReadResponseHeadComplete(
int result,
network::mojom::URLResponseHeadPtr response_head,
std::optional<mojo_base::BigBuffer> metadata) {
DCHECK(client_);
TRACE_EVENT0(
"ServiceWorker",
"ServiceWorkerInstalledScriptReader::OnReadResponseHeadComplete");
if (!response_head) {
DCHECK_LT(result, 0);
ServiceWorkerMetrics::CountReadResponseResult(
ServiceWorkerMetrics::READ_HEADERS_ERROR);
CompleteSendIfNeeded(FinishedReason::kNoResponseHeadError);
return;
}
DCHECK_GE(result, 0);
DCHECK(reader_.is_connected());
body_size_ = response_head->content_length;
int64_t content_length = response_head->content_length;
reader_->PrepareReadData(
content_length,
base::BindOnce(&ServiceWorkerInstalledScriptReader::OnReadDataPrepared,
AsWeakPtr(), std::move(response_head),
std::move(metadata)));
}
void ServiceWorkerInstalledScriptReader::OnReadDataPrepared(
network::mojom::URLResponseHeadPtr response_head,
std::optional<mojo_base::BigBuffer> metadata,
mojo::ScopedDataPipeConsumerHandle body_consumer_handle) {
if (!body_consumer_handle) {
CompleteSendIfNeeded(FinishedReason::kCreateDataPipeError);
return;
}
mojo::ScopedDataPipeConsumerHandle meta_data_consumer;
// Start sending meta data (V8 code cache data).
if (metadata) {
DCHECK_GT(metadata->size(), 0UL);
mojo::ScopedDataPipeProducerHandle meta_producer_handle;
MojoCreateDataPipeOptions options;
options.struct_size = sizeof(MojoCreateDataPipeOptions);
options.flags = MOJO_CREATE_DATA_PIPE_FLAG_NONE;
options.element_num_bytes = 1;
options.capacity_num_bytes =
blink::BlobUtils::GetDataPipeCapacity(metadata->size());
int rv = mojo::CreateDataPipe(&options, meta_producer_handle,
meta_data_consumer);
if (rv != MOJO_RESULT_OK) {
CompleteSendIfNeeded(FinishedReason::kCreateDataPipeError);
return;
}
// TODO(crbug.com/40120038): Avoid copying |metadata| if |client_| doesn't
// need it.
auto buffer = base::MakeRefCounted<net::IOBufferWithSize>(metadata->size());
memmove(buffer->data(), metadata->data(), metadata->size());
meta_data_sender_ = std::make_unique<MetaDataSender>(
std::move(buffer), std::move(meta_producer_handle));
meta_data_sender_->Start(base::BindOnce(
&ServiceWorkerInstalledScriptReader::OnMetaDataSent, AsWeakPtr()));
}
client_->OnStarted(std::move(response_head), std::move(metadata),
std::move(body_consumer_handle),
std::move(meta_data_consumer));
reader_->ReadData(base::BindOnce(
&ServiceWorkerInstalledScriptReader::OnComplete, AsWeakPtr()));
}
void ServiceWorkerInstalledScriptReader::OnReaderDisconnected() {
CompleteSendIfNeeded(FinishedReason::kConnectionError);
}
void ServiceWorkerInstalledScriptReader::OnMetaDataSent(bool success) {
meta_data_sender_.reset();
if (!success) {
CompleteSendIfNeeded(FinishedReason::kMetaDataSenderError);
return;
}
CompleteSendIfNeeded(FinishedReason::kSuccess);
}
void ServiceWorkerInstalledScriptReader::CompleteSendIfNeeded(
FinishedReason reason) {
if (reason != FinishedReason::kSuccess) {
client_->OnFinished(reason);
return;
}
if (WasMetadataWritten() && WasBodyWritten())
client_->OnFinished(reason);
}
void ServiceWorkerInstalledScriptReader::OnComplete(int32_t status) {
was_body_written_ = true;
if (status >= 0 && static_cast<uint64_t>(status) == body_size_) {
ServiceWorkerMetrics::CountReadResponseResult(
ServiceWorkerMetrics::READ_OK);
CompleteSendIfNeeded(FinishedReason::kSuccess);
} else if (status == net::ERR_ABORTED) {
CompleteSendIfNeeded(FinishedReason::kConnectionError);
} else {
CompleteSendIfNeeded(FinishedReason::kResponseReaderError);
}
}
} // namespace content