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// 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.
#include "services/network/proxy_resolving_socket_mojo.h"
#include <optional>
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "net/base/net_errors.h"
#include "services/network/public/mojom/tls_socket.mojom.h"
#include "services/network/socket_data_pump.h"
namespace network {
ProxyResolvingSocketMojo::ProxyResolvingSocketMojo(
std::unique_ptr<net::StreamSocket> socket,
const net::NetworkTrafficAnnotationTag& traffic_annotation,
mojo::PendingRemote<mojom::SocketObserver> observer,
TLSSocketFactory* tls_socket_factory)
: observer_(std::move(observer)),
tls_socket_factory_(tls_socket_factory),
socket_(std::move(socket)),
traffic_annotation_(traffic_annotation) {}
ProxyResolvingSocketMojo::~ProxyResolvingSocketMojo() {
if (connect_callback_) {
// If |this| is destroyed when connect hasn't completed, tell the consumer
// that request has been aborted.
std::move(connect_callback_)
.Run(net::ERR_ABORTED, std::nullopt, std::nullopt,
mojo::ScopedDataPipeConsumerHandle(),
mojo::ScopedDataPipeProducerHandle());
}
}
void ProxyResolvingSocketMojo::Connect(
mojom::ProxyResolvingSocketFactory::CreateProxyResolvingSocketCallback
callback) {
DCHECK(socket_);
DCHECK(callback);
DCHECK(!connect_callback_);
connect_callback_ = std::move(callback);
int result = socket_->Connect(base::BindOnce(
&ProxyResolvingSocketMojo::OnConnectCompleted, base::Unretained(this)));
if (result == net::ERR_IO_PENDING)
return;
OnConnectCompleted(result);
}
void ProxyResolvingSocketMojo::UpgradeToTLS(
const net::HostPortPair& host_port_pair,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation,
mojo::PendingReceiver<mojom::TLSClientSocket> receiver,
mojo::PendingRemote<mojom::SocketObserver> observer,
mojom::ProxyResolvingSocket::UpgradeToTLSCallback callback) {
// Wait for data pipes to be closed by the client before doing the upgrade.
if (socket_data_pump_) {
pending_upgrade_to_tls_callback_ = base::BindOnce(
&ProxyResolvingSocketMojo::UpgradeToTLS, base::Unretained(this),
host_port_pair, traffic_annotation, std::move(receiver),
std::move(observer), std::move(callback));
return;
}
tls_socket_factory_->UpgradeToTLS(
this, host_port_pair, nullptr /* sockt_options */, traffic_annotation,
std::move(receiver), std::move(observer),
base::BindOnce(
[](mojom::ProxyResolvingSocket::UpgradeToTLSCallback callback,
int32_t net_error,
mojo::ScopedDataPipeConsumerHandle receive_stream,
mojo::ScopedDataPipeProducerHandle send_stream,
const std::optional<net::SSLInfo>& ssl_info) {
DCHECK(!ssl_info);
std::move(callback).Run(net_error, std::move(receive_stream),
std::move(send_stream));
},
std::move(callback)));
}
void ProxyResolvingSocketMojo::OnConnectCompleted(int result) {
DCHECK(!connect_callback_.is_null());
DCHECK(!socket_data_pump_);
net::IPEndPoint local_addr;
if (result == net::OK)
result = socket_->GetLocalAddress(&local_addr);
net::IPEndPoint peer_addr;
// If |socket_| is connected through a proxy, GetPeerAddress returns
// net::ERR_NAME_NOT_RESOLVED.
bool get_peer_address_success =
result == net::OK && (socket_->GetPeerAddress(&peer_addr) == net::OK);
mojo::ScopedDataPipeProducerHandle send_producer_handle;
mojo::ScopedDataPipeConsumerHandle send_consumer_handle;
if (result == net::OK) {
if (mojo::CreateDataPipe(nullptr, send_producer_handle,
send_consumer_handle) != MOJO_RESULT_OK) {
result = net::ERR_FAILED;
}
}
mojo::ScopedDataPipeProducerHandle receive_producer_handle;
mojo::ScopedDataPipeConsumerHandle receive_consumer_handle;
if (result == net::OK) {
if (mojo::CreateDataPipe(nullptr, receive_producer_handle,
receive_consumer_handle) != MOJO_RESULT_OK) {
result = net::ERR_FAILED;
}
}
if (result != net::OK) {
std::move(connect_callback_)
.Run(result, std::nullopt, std::nullopt,
mojo::ScopedDataPipeConsumerHandle(),
mojo::ScopedDataPipeProducerHandle());
return;
}
socket_data_pump_ = std::make_unique<SocketDataPump>(
socket_.get(), this /*delegate*/, std::move(receive_producer_handle),
std::move(send_consumer_handle), traffic_annotation_);
std::move(connect_callback_)
.Run(net::OK, local_addr,
get_peer_address_success
? std::make_optional<net::IPEndPoint>(peer_addr)
: std::nullopt,
std::move(receive_consumer_handle), std::move(send_producer_handle));
}
void ProxyResolvingSocketMojo::OnNetworkReadError(int net_error) {
if (observer_)
observer_->OnReadError(net_error);
}
void ProxyResolvingSocketMojo::OnNetworkWriteError(int net_error) {
if (observer_)
observer_->OnWriteError(net_error);
}
void ProxyResolvingSocketMojo::OnShutdown() {
socket_data_pump_ = nullptr;
if (!pending_upgrade_to_tls_callback_.is_null())
std::move(pending_upgrade_to_tls_callback_).Run();
}
const net::StreamSocket* ProxyResolvingSocketMojo::BorrowSocket() {
return socket_.get();
}
std::unique_ptr<net::StreamSocket> ProxyResolvingSocketMojo::TakeSocket() {
return std::move(socket_);
}
} // namespace network
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