extensions/browser/api/socket/tls_socket.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_EXTENSIONS_API_SOCKET_TLS_SOCKET_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_SOCKET_TLS_SOCKET_H_
   7
   8 #include <string>
   9
  10 #include "extensions/browser/api/socket/socket.h"
  11 #include "extensions/browser/api/socket/socket_api.h"
  12 #include "extensions/browser/api/socket/tcp_socket.h"
  13 #include "net/ssl/ssl_config_service.h"
  14
  15 namespace net {
  16 class Socket;
  17 class CertVerifier;
  18 class TransportSecurityState;
  19 }
  20
  21 namespace extensions {
  22
  23 class TLSSocket;
  24
  25 // TLS Sockets from the chrome.socket and chrome.sockets.tcp APIs. A regular
  26 // TCPSocket is converted to a TLSSocket via chrome.socket.secure() or
  27 // chrome.sockets.tcp.secure(). The inheritance here is for interface API
  28 // compatibility, not for the implementation that comes with it. TLSSocket
  29 // does not use its superclass's socket state, so all methods are overridden
  30 // here to prevent any access of ResumableTCPSocket's socket state. Except
  31 // for the implementation of a write queue in Socket::Write() (a super-super
  32 // class of ResumableTCPSocket). That implementation only queues and
  33 // serializes invocations to WriteImpl(), implemented here, and does not
  34 // touch any socket state.
  35 class TLSSocket : public ResumableTCPSocket {
  36  public:
  37   typedef base::Callback<void(scoped_ptr<TLSSocket>, int)> SecureCallback;
  38
  39   TLSSocket(scoped_ptr<net::StreamSocket> tls_socket,
  40             const std::string& owner_extension_id);
  41
  42   ~TLSSocket() override;
  43
  44   // Most of these methods either fail or forward the method call on to the
  45   // inner net::StreamSocket. The remaining few do actual TLS work.
  46
  47   // Fails.
  48   void Connect(const net::AddressList& address,
  49                const CompletionCallback& callback) override;
  50   // Forwards.
  51   void Disconnect() override;
  52
  53   // Attempts to read |count| bytes of decrypted data from the TLS socket,
  54   // invoking |callback| with the actual number of bytes read, or a network
  55   // error code if an error occurred.
  56   void Read(int count, const ReadCompletionCallback& callback) override;
  57
  58   // Fails. This should have been called on the TCP socket before secure() was
  59   // invoked.
  60   bool SetKeepAlive(bool enable, int delay) override;
  61
  62   // Fails. This should have been called on the TCP socket before secure() was
  63   // invoked.
  64   bool SetNoDelay(bool no_delay) override;
  65
  66   // Fails. TLSSocket is only a client.
  67   int Listen(const std::string& address,
  68              uint16 port,
  69              int backlog,
  70              std::string* error_msg) override;
  71
  72   // Fails. TLSSocket is only a client.
  73   void Accept(const AcceptCompletionCallback& callback) override;
  74
  75   // Forwards.
  76   bool IsConnected() override;
  77
  78   // Forwards.
  79   bool GetPeerAddress(net::IPEndPoint* address) override;
  80   // Forwards.
  81   bool GetLocalAddress(net::IPEndPoint* address) override;
  82
  83   // Returns TYPE_TLS.
  84   SocketType GetSocketType() const override;
  85
  86   // Convert |socket| to a TLS socket. |socket| must be an open TCP client
  87   // socket. |socket| must not have a pending read. UpgradeSocketToTLS() must
  88   // be invoked in the IO thread. |callback| will always be invoked. |options|
  89   // may be NULL.
  90   // Note: |callback| may be synchronously invoked before
  91   // UpgradeSocketToTLS() returns. Currently using the older chrome.socket
  92   // version of SecureOptions, to avoid having the older API implementation
  93   // depend on the newer one.
  94   static void UpgradeSocketToTLS(
  95       Socket* socket,
  96       scoped_refptr<net::SSLConfigService> config_service,
  97       net::CertVerifier* cert_verifier,
  98       net::TransportSecurityState* transport_security_state,
  99       const std::string& extension_id,
 100       core_api::socket::SecureOptions* options,
 101       const SecureCallback& callback);
 102
 103  private:
 104   int WriteImpl(net::IOBuffer* io_buffer,
 105                 int io_buffer_size,
 106                 const net::CompletionCallback& callback) override;
 107
 108   void OnReadComplete(const scoped_refptr<net::IOBuffer>& io_buffer,
 109                       int result);
 110
 111   scoped_ptr<net::StreamSocket> tls_socket_;
 112   ReadCompletionCallback read_callback_;
 113 };
 114
 115 }  // namespace extensions
 116
 117 #endif  // CHROME_BROWSER_EXTENSIONS_API_SOCKET_TLS_SOCKET_H_
 118