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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/api/socket/tls_socket.h"
#include <utility>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/browser/api/api_resource.h"
#include "extensions/browser/api/socket/mojo_data_pump.h"
#include "net/base/address_list.h"
#include "net/base/ip_endpoint.h"
#include "net/base/net_errors.h"
#include "net/base/url_util.h"
#include "url/url_canon.h"
namespace extensions {
const char kTLSSocketTypeInvalidError[] =
"Cannot listen on a socket that is already connected.";
TLSSocket::TLSSocket(
mojo::PendingRemote<network::mojom::TLSClientSocket> tls_socket,
const net::IPEndPoint& local_addr,
const net::IPEndPoint& peer_addr,
mojo::ScopedDataPipeConsumerHandle receive_stream,
mojo::ScopedDataPipeProducerHandle send_stream,
const std::string& owner_extension_id)
: ResumableTCPSocket(nullptr, owner_extension_id),
tls_socket_(std::move(tls_socket)),
local_addr_(local_addr),
peer_addr_(peer_addr),
mojo_data_pump_(std::make_unique<MojoDataPump>(std::move(receive_stream),
std::move(send_stream))) {
DCHECK(tls_socket_);
is_connected_ = true;
}
TLSSocket::~TLSSocket() {
Disconnect(true /* socket_destroying */);
}
void TLSSocket::Connect(const net::AddressList& address,
net::CompletionOnceCallback callback) {
std::move(callback).Run(net::ERR_CONNECTION_FAILED);
}
void TLSSocket::Disconnect(bool socket_destroying) {
is_connected_ = false;
tls_socket_.reset();
local_addr_ = std::nullopt;
peer_addr_ = std::nullopt;
mojo_data_pump_ = nullptr;
// TODO(devlin): Should we do this for all callbacks?
if (read_callback_) {
std::move(read_callback_)
.Run(net::ERR_CONNECTION_CLOSED, nullptr, socket_destroying);
}
}
void TLSSocket::Read(int count, ReadCompletionCallback callback) {
DCHECK(callback);
DCHECK(!read_callback_);
const bool socket_destroying = false;
if (!mojo_data_pump_) {
std::move(callback).Run(net::ERR_SOCKET_NOT_CONNECTED, nullptr,
socket_destroying);
return;
}
if (mojo_data_pump_->HasPendingRead()) {
std::move(callback).Run(net::ERR_IO_PENDING, nullptr, socket_destroying);
return;
}
read_callback_ = std::move(callback);
mojo_data_pump_->Read(count, base::BindOnce(&TLSSocket::OnReadComplete,
base::Unretained(this)));
}
void TLSSocket::Listen(const std::string& address,
uint16_t port,
int backlog,
ListenCallback callback) {
std::move(callback).Run(net::ERR_NOT_IMPLEMENTED, kTLSSocketTypeInvalidError);
}
bool TLSSocket::IsConnected() {
return is_connected_;
}
bool TLSSocket::GetPeerAddress(net::IPEndPoint* address) {
if (!IsConnected())
return false;
if (!peer_addr_)
return false;
*address = peer_addr_.value();
return true;
}
bool TLSSocket::GetLocalAddress(net::IPEndPoint* address) {
if (!IsConnected())
return false;
if (!local_addr_)
return false;
*address = local_addr_.value();
return true;
}
Socket::SocketType TLSSocket::GetSocketType() const {
return Socket::TYPE_TLS;
}
int TLSSocket::WriteImpl(net::IOBuffer* io_buffer,
int io_buffer_size,
net::CompletionOnceCallback callback) {
if (!mojo_data_pump_)
return net::ERR_SOCKET_NOT_CONNECTED;
mojo_data_pump_->Write(
io_buffer, io_buffer_size,
base::BindOnce(&TLSSocket::OnWriteComplete, base::Unretained(this),
std::move(callback)));
return net::ERR_IO_PENDING;
}
void TLSSocket::OnWriteComplete(net::CompletionOnceCallback callback,
int result) {
if (result < 0) {
// Write side has terminated. This can be an error or a graceful close.
// TCPSocketEventDispatcher doesn't distinguish between the two.
Disconnect(false /* socket_destroying */);
}
std::move(callback).Run(result);
}
void TLSSocket::OnReadComplete(int result,
scoped_refptr<net::IOBuffer> io_buffer) {
DCHECK(read_callback_);
DCHECK_GE(result, 0);
// Use a local variable for |read_callback_|, because otherwise Disconnect()
// will try to invoke |read_callback_| with a hardcoded result code.
ReadCompletionCallback callback = std::move(read_callback_);
if (result == 0) {
// Read side has terminated. This can be an error or a graceful close.
// TCPSocketEventDispatcher doesn't distinguish between the two. Treat them
// as connection close.
Disconnect(false /* socket_destroying */);
}
std::move(callback).Run(result, io_buffer, false /* socket_destroying */);
}
} // namespace extensions
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