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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_SOCKET_SOCKS_CONNECT_JOB_H_
#define NET_SOCKET_SOCKS_CONNECT_JOB_H_
#include <memory>
#include <set>
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "net/base/completion_once_callback.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_errors.h"
#include "net/base/net_export.h"
#include "net/base/network_isolation_key.h"
#include "net/base/request_priority.h"
#include "net/dns/public/resolve_error_info.h"
#include "net/socket/connect_job.h"
#include "net/socket/connect_job_params.h"
#include "net/socket/socks_client_socket.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
namespace net {
class SocketTag;
class StreamSocket;
class TransportSocketParams;
class NET_EXPORT_PRIVATE SOCKSSocketParams
: public base::RefCounted<SOCKSSocketParams> {
public:
SOCKSSocketParams(ConnectJobParams nested_params,
bool socks_v5,
const HostPortPair& host_port_pair,
const NetworkAnonymizationKey& network_anonymization_key,
const NetworkTrafficAnnotationTag& traffic_annotation);
SOCKSSocketParams(const SOCKSSocketParams&) = delete;
SOCKSSocketParams& operator=(const SOCKSSocketParams&) = delete;
const scoped_refptr<TransportSocketParams>& transport_params() const {
return transport_params_;
}
const HostPortPair& destination() const { return destination_; }
bool is_socks_v5() const { return socks_v5_; }
const NetworkAnonymizationKey& network_anonymization_key() {
return network_anonymization_key_;
}
const NetworkTrafficAnnotationTag traffic_annotation() {
return traffic_annotation_;
}
private:
friend class base::RefCounted<SOCKSSocketParams>;
~SOCKSSocketParams();
// The transport (likely TCP) connection must point toward the proxy server.
const scoped_refptr<TransportSocketParams> transport_params_;
// This is the HTTP destination.
const HostPortPair destination_;
const bool socks_v5_;
const NetworkAnonymizationKey network_anonymization_key_;
NetworkTrafficAnnotationTag traffic_annotation_;
};
// SOCKSConnectJob handles establishing a connection to a SOCKS4 or SOCKS5 proxy
// and then sending a handshake to establish a tunnel.
class NET_EXPORT_PRIVATE SOCKSConnectJob : public ConnectJob,
public ConnectJob::Delegate {
public:
class NET_EXPORT_PRIVATE Factory {
public:
Factory() = default;
virtual ~Factory() = default;
virtual std::unique_ptr<SOCKSConnectJob> Create(
RequestPriority priority,
const SocketTag& socket_tag,
const CommonConnectJobParams* common_connect_job_params,
scoped_refptr<SOCKSSocketParams> socks_params,
ConnectJob::Delegate* delegate,
const NetLogWithSource* net_log);
};
SOCKSConnectJob(RequestPriority priority,
const SocketTag& socket_tag,
const CommonConnectJobParams* common_connect_job_params,
scoped_refptr<SOCKSSocketParams> socks_params,
ConnectJob::Delegate* delegate,
const NetLogWithSource* net_log);
SOCKSConnectJob(const SOCKSConnectJob&) = delete;
SOCKSConnectJob& operator=(const SOCKSConnectJob&) = delete;
~SOCKSConnectJob() override;
// ConnectJob methods.
LoadState GetLoadState() const override;
bool HasEstablishedConnection() const override;
ResolveErrorInfo GetResolveErrorInfo() const override;
// Returns the handshake timeout used by SOCKSConnectJobs.
static base::TimeDelta HandshakeTimeoutForTesting();
private:
enum State {
STATE_TRANSPORT_CONNECT,
STATE_TRANSPORT_CONNECT_COMPLETE,
STATE_SOCKS_CONNECT,
STATE_SOCKS_CONNECT_COMPLETE,
STATE_NONE,
};
void OnIOComplete(int result);
// ConnectJob::Delegate methods.
void OnConnectJobComplete(int result, ConnectJob* job) override;
void OnNeedsProxyAuth(const HttpResponseInfo& response,
HttpAuthController* auth_controller,
base::OnceClosure restart_with_auth_callback,
ConnectJob* job) override;
Error OnDestinationDnsAliasesResolved(const std::set<std::string>& aliases,
ConnectJob* job) override;
// Runs the state transition loop.
int DoLoop(int result);
int DoTransportConnect();
int DoTransportConnectComplete(int result);
int DoSOCKSConnect();
int DoSOCKSConnectComplete(int result);
// Begins the transport connection and the SOCKS handshake. Returns OK on
// success and ERR_IO_PENDING if it cannot immediately service the request.
// Otherwise, it returns a net error code.
int ConnectInternal() override;
void ChangePriorityInternal(RequestPriority priority) override;
scoped_refptr<SOCKSSocketParams> socks_params_;
State next_state_;
std::unique_ptr<ConnectJob> transport_connect_job_;
std::unique_ptr<StreamSocket> socket_;
raw_ptr<SOCKSClientSocket> socks_socket_ptr_;
ResolveErrorInfo resolve_error_info_;
};
} // namespace net
#endif // NET_SOCKET_SOCKS_CONNECT_JOB_H_
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