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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/tls_socket_factory.h"
#include <optional>
#include <string>
#include <utility>
#include "mojo/public/cpp/bindings/type_converter.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_errors.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/multi_log_ct_verifier.h"
#include "net/http/http_network_session.h"
#include "net/http/transport_security_state.h"
#include "net/socket/client_socket_factory.h"
#include "net/socket/stream_socket.h"
#include "net/ssl/ssl_config.h"
#include "net/ssl/ssl_config_service.h"
#include "net/url_request/url_request_context.h"
#include "services/network/public/mojom/tcp_socket.mojom.h"
#include "services/network/public/mojom/tls_socket.mojom.h"
#include "services/network/ssl_config_type_converter.h"
#include "services/network/tls_client_socket.h"
namespace network {
namespace {
// Cert verifier which blindly accepts all certificates, regardless of validity.
class FakeCertVerifier : public net::CertVerifier {
public:
FakeCertVerifier() {}
~FakeCertVerifier() override {}
int Verify(const RequestParams& params,
net::CertVerifyResult* verify_result,
net::CompletionOnceCallback,
std::unique_ptr<Request>*,
const net::NetLogWithSource&) override {
verify_result->Reset();
verify_result->verified_cert = params.certificate();
return net::OK;
}
void Verify2QwacBinding(
const std::string& binding,
const std::string& hostname,
const scoped_refptr<net::X509Certificate>& tls_cert,
base::OnceCallback<void(const scoped_refptr<net::X509Certificate>&)>
callback,
const net::NetLogWithSource& net_log) override {
std::move(callback).Run(nullptr);
}
void SetConfig(const Config& config) override {}
void AddObserver(Observer* observer) override {}
void RemoveObserver(Observer* observer) override {}
};
} // namespace
TLSSocketFactory::TLSSocketFactory(net::URLRequestContext* url_request_context)
: ssl_client_context_(url_request_context->ssl_config_service(),
url_request_context->cert_verifier(),
url_request_context->transport_security_state(),
nullptr /* Disables SSL session caching */,
url_request_context->sct_auditing_delegate()),
client_socket_factory_(nullptr),
ssl_config_service_(url_request_context->ssl_config_service()) {
if (url_request_context->GetNetworkSessionContext()) {
client_socket_factory_ =
url_request_context->GetNetworkSessionContext()->client_socket_factory;
}
if (!client_socket_factory_)
client_socket_factory_ = net::ClientSocketFactory::GetDefaultFactory();
}
TLSSocketFactory::~TLSSocketFactory() {}
void TLSSocketFactory::UpgradeToTLS(
Delegate* socket_delegate,
const net::HostPortPair& host_port_pair,
mojom::TLSClientSocketOptionsPtr socket_options,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation,
mojo::PendingReceiver<mojom::TLSClientSocket> receiver,
mojo::PendingRemote<mojom::SocketObserver> observer,
UpgradeToTLSCallback callback) {
const net::StreamSocket* socket = socket_delegate->BorrowSocket();
if (!socket || !socket->IsConnected()) {
std::move(callback).Run(net::ERR_SOCKET_NOT_CONNECTED,
mojo::ScopedDataPipeConsumerHandle(),
mojo::ScopedDataPipeProducerHandle(), std::nullopt);
return;
}
CreateTLSClientSocket(
host_port_pair, std::move(socket_options), std::move(receiver),
socket_delegate->TakeSocket(), std::move(observer),
static_cast<net::NetworkTrafficAnnotationTag>(traffic_annotation),
std::move(callback));
}
void TLSSocketFactory::CreateTLSClientSocket(
const net::HostPortPair& host_port_pair,
mojom::TLSClientSocketOptionsPtr socket_options,
mojo::PendingReceiver<mojom::TLSClientSocket> receiver,
std::unique_ptr<net::StreamSocket> underlying_socket,
mojo::PendingRemote<mojom::SocketObserver> observer,
const net::NetworkTrafficAnnotationTag& traffic_annotation,
mojom::TCPConnectedSocket::UpgradeToTLSCallback callback) {
auto socket = std::make_unique<TLSClientSocket>(
std::move(observer),
static_cast<net::NetworkTrafficAnnotationTag>(traffic_annotation));
TLSClientSocket* socket_raw = socket.get();
tls_socket_receivers_.Add(std::move(socket), std::move(receiver));
net::SSLClientContext* ssl_client_context = &ssl_client_context_;
bool send_ssl_info = false;
net::SSLConfig ssl_config;
if (socket_options) {
ssl_config.version_min_override =
mojo::MojoSSLVersionToNetSSLVersion(socket_options->version_min);
ssl_config.version_max_override =
mojo::MojoSSLVersionToNetSSLVersion(socket_options->version_max);
send_ssl_info = socket_options->send_ssl_info;
if (socket_options->unsafely_skip_cert_verification) {
if (!no_verification_ssl_client_context_) {
no_verification_cert_verifier_ = std::make_unique<FakeCertVerifier>();
no_verification_transport_security_state_ =
std::make_unique<net::TransportSecurityState>();
no_verification_ssl_client_context_ =
std::make_unique<net::SSLClientContext>(
ssl_config_service_, no_verification_cert_verifier_.get(),
no_verification_transport_security_state_.get(),
nullptr /* no session cache */,
nullptr /* disable sct auditing */);
}
ssl_client_context = no_verification_ssl_client_context_.get();
send_ssl_info = true;
}
}
socket_raw->Connect(host_port_pair, ssl_config, std::move(underlying_socket),
ssl_client_context, client_socket_factory_,
std::move(callback), send_ssl_info);
}
} // namespace network
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