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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_
#define NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_
#include <Security/Security.h>
#include <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "net/base/cert_verify_result.h"
#include "net/base/completion_callback.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_log.h"
#include "net/base/ssl_config_service.h"
#include "net/socket/ssl_client_socket.h"
namespace net {
class CertVerifier;
class ClientSocketHandle;
class SingleRequestCertVerifier;
// An SSL client socket implemented with Secure Transport.
class SSLClientSocketMac : public SSLClientSocket {
public:
// Takes ownership of the |transport_socket|, which must already be connected.
// The hostname specified in |host_and_port| will be compared with the name(s)
// in the server's certificate during the SSL handshake. If SSL client
// authentication is requested, the host_and_port field of SSLCertRequestInfo
// will be populated with |host_and_port|. |ssl_config| specifies
// the SSL settings.
SSLClientSocketMac(ClientSocketHandle* transport_socket,
const HostPortPair& host_and_port,
const SSLConfig& ssl_config,
const SSLClientSocketContext& context);
virtual ~SSLClientSocketMac();
// SSLClientSocket implementation.
virtual void GetSSLCertRequestInfo(
SSLCertRequestInfo* cert_request_info) OVERRIDE;
virtual NextProtoStatus GetNextProto(std::string* proto,
std::string* server_protos) OVERRIDE;
virtual ServerBoundCertService* GetServerBoundCertService() const OVERRIDE;
// SSLSocket implementation.
virtual int ExportKeyingMaterial(const base::StringPiece& label,
bool has_context,
const base::StringPiece& context,
unsigned char* out,
unsigned int outlen) OVERRIDE;
virtual int GetTLSUniqueChannelBinding(std::string* out) OVERRIDE;
// StreamSocket implementation.
virtual int Connect(const CompletionCallback& callback) OVERRIDE;
virtual void Disconnect() OVERRIDE;
virtual bool IsConnected() const OVERRIDE;
virtual bool IsConnectedAndIdle() const OVERRIDE;
virtual int GetPeerAddress(IPEndPoint* address) const OVERRIDE;
virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE;
virtual const BoundNetLog& NetLog() const OVERRIDE;
virtual void SetSubresourceSpeculation() OVERRIDE;
virtual void SetOmniboxSpeculation() OVERRIDE;
virtual bool WasEverUsed() const OVERRIDE;
virtual bool UsingTCPFastOpen() const OVERRIDE;
virtual int64 NumBytesRead() const OVERRIDE;
virtual base::TimeDelta GetConnectTimeMicros() const OVERRIDE;
virtual bool GetSSLInfo(SSLInfo* ssl_info) OVERRIDE;
// Socket implementation.
virtual int Read(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) OVERRIDE;
virtual int Write(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) OVERRIDE;
virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
virtual bool SetSendBufferSize(int32 size) OVERRIDE;
private:
bool completed_handshake() const {
return next_handshake_state_ == STATE_COMPLETED_HANDSHAKE;
}
// Initializes the SSLContext. Returns a net error code.
int InitializeSSLContext();
void DoConnectCallback(int result);
void DoReadCallback(int result);
void DoWriteCallback(int result);
void OnHandshakeIOComplete(int result);
void OnTransportReadComplete(int result);
void OnTransportWriteComplete(int result);
int DoHandshakeLoop(int last_io_result);
int DoPayloadRead();
int DoPayloadWrite();
int DoHandshake();
int DoVerifyCert();
int DoVerifyCertComplete(int result);
int DoCompletedRenegotiation(int result);
void DidCompleteRenegotiation();
int DidCompleteHandshake();
int SetClientCert();
static OSStatus SSLReadCallback(SSLConnectionRef connection,
void* data,
size_t* data_length);
static OSStatus SSLWriteCallback(SSLConnectionRef connection,
const void* data,
size_t* data_length);
scoped_ptr<ClientSocketHandle> transport_;
HostPortPair host_and_port_;
SSLConfig ssl_config_;
CompletionCallback user_connect_callback_;
CompletionCallback user_read_callback_;
CompletionCallback user_write_callback_;
// Used by Read function.
scoped_refptr<IOBuffer> user_read_buf_;
int user_read_buf_len_;
// Used by Write function.
scoped_refptr<IOBuffer> user_write_buf_;
int user_write_buf_len_;
enum State {
STATE_NONE,
STATE_HANDSHAKE,
STATE_VERIFY_CERT,
STATE_VERIFY_CERT_COMPLETE,
STATE_COMPLETED_RENEGOTIATION,
STATE_COMPLETED_HANDSHAKE,
// After the handshake, the socket remains in the
// STATE_COMPLETED_HANDSHAKE state until renegotiation is requested by
// the server. When renegotiation is requested, the state machine
// restarts at STATE_HANDSHAKE, advances through to
// STATE_VERIFY_CERT_COMPLETE, and then continues to
// STATE_COMPLETED_RENEGOTIATION. After STATE_COMPLETED_RENEGOTIATION
// has been processed, it goes back to STATE_COMPLETED_HANDSHAKE and
// will remain there until the server requests renegotiation again.
// During the initial handshake, STATE_COMPLETED_RENEGOTIATION is
// skipped.
};
State next_handshake_state_;
scoped_refptr<X509Certificate> server_cert_;
CertVerifier* const cert_verifier_;
scoped_ptr<SingleRequestCertVerifier> verifier_;
CertVerifyResult server_cert_verify_result_;
// The initial handshake has already completed, and the current handshake
// is server-initiated renegotiation.
bool renegotiating_;
bool client_cert_requested_;
SSLContextRef ssl_context_;
// During a renegotiation, the amount of application data read following
// the handshake's completion.
size_t bytes_read_after_renegotiation_;
// These buffers hold data retrieved from/sent to the underlying transport
// before it's fed to the SSL engine.
std::vector<char> send_buffer_;
int pending_send_error_;
std::vector<char> recv_buffer_;
// These are the IOBuffers used for operations on the underlying transport.
scoped_refptr<IOBuffer> read_io_buf_;
scoped_refptr<IOBuffer> write_io_buf_;
BoundNetLog net_log_;
};
} // namespace net
#endif // NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_
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