Add SSL wrapper for linux and mac

chrome/browser/sync/notifier/communicator/ssl_socket_adapter.h

+// Copyright (c) 2009 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 CHROME_BROWSER_SYNC_NOTIFIER_COMMUNICATOR_SSL_SOCKET_ADAPTER_H_
+#define CHROME_BROWSER_SYNC_NOTIFIER_COMMUNICATOR_SSL_SOCKET_ADAPTER_H_
+
+#include "base/scoped_ptr.h"
+#include "net/base/completion_callback.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+#include "net/socket/client_socket.h"
+#include "net/socket/ssl_client_socket.h"
+#include "talk/base/asyncsocket.h"
+
+namespace notifier {
+
+class SSLSocketAdapter;
+
+// This class provides a wrapper to libjingle's talk_base::AsyncSocket that
+// implements Chromium's net::ClientSocket interface.  It's used by
+// SSLSocketAdapter to enable Chromium's SSL implementation to work over
+// libjingle's socket class.
+class TransportSocket : public net::ClientSocket, public sigslot::has_slots<> {
+ public:
+  TransportSocket(talk_base::AsyncSocket* socket,
+                  SSLSocketAdapter *ssl_adapter);
+
+  void set_addr(const talk_base::SocketAddress& addr) {
+    addr_ = addr;
+  }
+
+  // net::ClientSocket implementation
+
+  virtual int Connect(net::CompletionCallback* callback);
+  virtual void Disconnect();
+  virtual bool IsConnected() const;
+  virtual bool IsConnectedAndIdle() const;
+
+#if defined(OS_LINUX) || defined(OS_MACOSX)
+  virtual int GetPeerName(struct sockaddr *name, socklen_t *namelen);
+#endif
+
+  // net::Socket implementation
+
+  virtual int Read(net::IOBuffer* buf, int buf_len,
+                   net::CompletionCallback* callback);
+  virtual int Write(net::IOBuffer* buf, int buf_len,
+                    net::CompletionCallback* callback);
+  virtual bool SetReceiveBufferSize(int32 size);
+  virtual bool SetSendBufferSize(int32 size);
+
+ private:
+  void OnConnectEvent(talk_base::AsyncSocket * socket);
+  void OnReadEvent(talk_base::AsyncSocket * socket);
+  void OnWriteEvent(talk_base::AsyncSocket * socket);
+  void OnCloseEvent(talk_base::AsyncSocket * socket, int err);
+
+  net::CompletionCallback* connect_callback_;
+  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_;
+
+  talk_base::AsyncSocket *socket_;
+  talk_base::SocketAddress addr_;
+  SSLSocketAdapter *ssl_adapter_;
+
+  DISALLOW_COPY_AND_ASSIGN(TransportSocket);
+};
+
+// This provides a talk_base::AsyncSocketAdapter interface around Chromium's
+// net::SSLClientSocket class.  This allows notifier to use Chromium's SSL
+// implementation instead of OpenSSL.
+class SSLSocketAdapter : public talk_base::AsyncSocketAdapter {
+ public:
+  explicit SSLSocketAdapter(talk_base::AsyncSocket* socket);
+
+  bool ignore_bad_cert() const { return ignore_bad_cert_; }
+  void set_ignore_bad_cert(bool ignore) { ignore_bad_cert_ = ignore; }
+
+  // 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);
+
+  // Create the default SSL adapter for this platform.
+  static SSLSocketAdapter* Create(AsyncSocket* socket);
+
+  virtual int Send(const void* pv, size_t cb);
+  virtual int Recv(void* pv, size_t cb);
+
+ private:
+  friend class TransportSocket;
+
+  enum State {
+    STATE_NONE,
+    STATE_READ,
+    STATE_READ_COMPLETE,
+    STATE_WRITE,
+    STATE_WRITE_COMPLETE
+  };
+
+  void OnConnected(int result);
+  void OnIO(int result);
+
+  bool ignore_bad_cert_;
+  scoped_ptr<TransportSocket> socket_;
+  scoped_ptr<net::SSLClientSocket> ssl_socket_;
+  net::CompletionCallbackImpl<SSLSocketAdapter> connected_callback_;
+  net::CompletionCallbackImpl<SSLSocketAdapter> io_callback_;
+  bool ssl_connected_;
+  State state_;
+  scoped_refptr<net::IOBuffer> transport_buf_;
+  int data_transferred_;
+
+  DISALLOW_COPY_AND_ASSIGN(SSLSocketAdapter);
+};
+
+}  // namespace notifier
+
+#endif  // CHROME_BROWSER_SYNC_NOTIFIER_COMMUNICATOR_SSL_SOCKET_ADAPTER_H_