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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 REMOTING_JINGLE_GLUE_SSL_SOCKET_ADAPTER_H_
+#define REMOTING_JINGLE_GLUE_SSL_SOCKET_ADAPTER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "net/base/completion_callback.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+#include "net/base/net_log.h"
+#include "net/socket/ssl_client_socket.h"
+#include "net/socket/stream_socket.h"
+#include "third_party/libjingle/source/talk/base/asyncsocket.h"
+#include "third_party/libjingle/source/talk/base/ssladapter.h"
+
+namespace net {
+class CertVerifier;
+class TransportSecurityState;
+} // namespace net
+
+namespace remoting {
+
+class SSLSocketAdapter;
+
+// TODO(sergeyu): Write unittests for this code!
+
+// This class provides a wrapper to libjingle's talk_base::AsyncSocket that
+// implements Chromium's net::StreamSocket interface. It's used by
+// SSLSocketAdapter to enable Chromium's SSL implementation to work over
+// libjingle's socket class.
+class TransportSocket : public net::StreamSocket, public sigslot::has_slots<> {
+ public:
+ TransportSocket(talk_base::AsyncSocket* socket,
+ SSLSocketAdapter *ssl_adapter);
+ virtual ~TransportSocket();
+
+ void set_addr(const talk_base::SocketAddress& addr) {
+ addr_ = addr;
+ }
+
+ // net::StreamSocket implementation.
+ virtual int Connect(const net::CompletionCallback& callback) OVERRIDE;
+ virtual void Disconnect() OVERRIDE;
+ virtual bool IsConnected() const OVERRIDE;
+ virtual bool IsConnectedAndIdle() const OVERRIDE;
+ virtual int GetPeerAddress(net::IPEndPoint* address) const OVERRIDE;
+ virtual int GetLocalAddress(net::IPEndPoint* address) const OVERRIDE;
+ virtual const net::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 WasNpnNegotiated() const OVERRIDE;
+ virtual net::NextProto GetNegotiatedProtocol() const OVERRIDE;
+ virtual bool GetSSLInfo(net::SSLInfo* ssl_info) OVERRIDE;
+
+ // net::Socket implementation.
+ virtual int Read(net::IOBuffer* buf, int buf_len,
+ const net::CompletionCallback& callback) OVERRIDE;
+ virtual int Write(net::IOBuffer* buf, int buf_len,
+ const net::CompletionCallback& callback) OVERRIDE;
+ virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
+ virtual bool SetSendBufferSize(int32 size) OVERRIDE;
+
+ private:
+ friend class SSLSocketAdapter;
+
+ void OnReadEvent(talk_base::AsyncSocket* socket);
+ void OnWriteEvent(talk_base::AsyncSocket* socket);
+
+ // Holds the user's completion callback when Write and Read are called.
+ net::CompletionCallback read_callback_;
+ net::CompletionCallback write_callback_;
+
+ scoped_refptr<net::IOBuffer> read_buffer_;
+ int read_buffer_len_;
+ scoped_refptr<net::IOBuffer> write_buffer_;
+ int write_buffer_len_;
+
+ net::BoundNetLog net_log_;
+
+ talk_base::AsyncSocket *socket_;
+ talk_base::SocketAddress addr_;
+
+ bool was_used_to_convey_data_;
+
+ DISALLOW_COPY_AND_ASSIGN(TransportSocket);
+};
+
+// This provides a talk_base::AsyncSocketAdapter interface around Chromium's
+// net::SSLClientSocket class. This allows remoting to use Chromium's SSL
+// implementation instead of OpenSSL.
+class SSLSocketAdapter : public talk_base::SSLAdapter {
+ public:
+ explicit SSLSocketAdapter(talk_base::AsyncSocket* socket);
+ virtual ~SSLSocketAdapter();
+
+ // StartSSL returns 0 if successful, or non-zero on failure.
+ // If StartSSL is called while the socket is closed or connecting, the SSL
+ // negotiation will begin as soon as the socket connects.
+ //
+ // restartable is not implemented, and must be set to false.
+ virtual int StartSSL(const char* hostname, bool restartable) OVERRIDE;
+
+ // Create the default SSL adapter for this platform.
+ static SSLSocketAdapter* Create(AsyncSocket* socket);
+
+ virtual int Send(const void* pv, size_t cb) OVERRIDE;
+ virtual int Recv(void* pv, size_t cb) OVERRIDE;
+
+ private:
+ friend class TransportSocket;
+
+ enum SSLState {
+ SSLSTATE_NONE,
+ SSLSTATE_WAIT,
+ SSLSTATE_CONNECTED,
+ SSLSTATE_ERROR,
+ };
+
+ void OnConnected(int result);
+ void OnRead(int result);
+ void OnWritten(int result);
+
+ void DoWrite();
+
+ virtual void OnConnectEvent(talk_base::AsyncSocket* socket) OVERRIDE;
+
+ int BeginSSL();
+
+ bool ignore_bad_cert_;
+ std::string hostname_;
+ TransportSocket* transport_socket_;
+
+ // |cert_verifier_| must be defined before |ssl_socket_|, so that
+ // it's destroyed after |ssl_socket_|.
+ scoped_ptr<net::CertVerifier> cert_verifier_;
+ scoped_ptr<net::TransportSecurityState> transport_security_state_;
+ scoped_ptr<net::SSLClientSocket> ssl_socket_;
+
+ SSLState ssl_state_;
+
+ bool read_pending_;
+ scoped_refptr<net::GrowableIOBuffer> read_buffer_;
+
+ bool write_pending_;
+ scoped_refptr<net::DrainableIOBuffer> write_buffer_;
+
+ DISALLOW_COPY_AND_ASSIGN(SSLSocketAdapter);
+};
+
+} // namespace remoting
+
+#endif // REMOTING_JINGLE_GLUE_SSL_SOCKET_ADAPTER_H_