Add SSL wrapper for linux and mac

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

+// 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.
+
+#include "chrome/browser/sync/notifier/communicator/ssl_socket_adapter.h"
+
+#include "base/compiler_specific.h"
+#include "chrome/browser/net/url_request_context_getter.h"
+#include "chrome/browser/profile.h"
+#include "net/base/ssl_config_service.h"
+#include "net/socket/client_socket_factory.h"
+#include "net/url_request/url_request_context.h"
+
+namespace notifier {
+
+namespace {
+
+// Convert values from <errno.h> to values from "net/base/net_errors.h"
+int MapPosixError(int err) {
+  // There are numerous posix error codes, but these are the ones we thus far
+  // find interesting.
+  switch (err) {
+    case EAGAIN:
+#if EWOULDBLOCK != EAGAIN
+    case EWOULDBLOCK:
+#endif
+      return net::ERR_IO_PENDING;
+    case ENETDOWN:
+      return net::ERR_INTERNET_DISCONNECTED;
+    case ETIMEDOUT:
+      return net::ERR_TIMED_OUT;
+    case ECONNRESET:
+    case ENETRESET:  // Related to keep-alive
+      return net::ERR_CONNECTION_RESET;
+    case ECONNABORTED:
+      return net::ERR_CONNECTION_ABORTED;
+    case ECONNREFUSED:
+      return net::ERR_CONNECTION_REFUSED;
+    case EHOSTUNREACH:
+    case ENETUNREACH:
+      return net::ERR_ADDRESS_UNREACHABLE;
+    case EADDRNOTAVAIL:
+      return net::ERR_ADDRESS_INVALID;
+    case 0:
+      return net::OK;
+    default:
+      LOG(WARNING) << "Unknown error " << err << " mapped to net::ERR_FAILED";
+      return net::ERR_FAILED;
+  }
+}
+
+}
+
+SSLSocketAdapter* SSLSocketAdapter::Create(AsyncSocket* socket) {
+  return new SSLSocketAdapter(socket);
+}
+
+SSLSocketAdapter::SSLSocketAdapter(AsyncSocket* socket)
+    : AsyncSocketAdapter(socket),
+      ignore_bad_cert_(false),
+      ALLOW_THIS_IN_INITIALIZER_LIST(
+        connected_callback_(this, &SSLSocketAdapter::OnConnected)),
+      ALLOW_THIS_IN_INITIALIZER_LIST(
+        io_callback_(this, &SSLSocketAdapter::OnIO)),
+      ssl_connected_(false),
+      state_(STATE_NONE) {
+  socket_.reset(new TransportSocket(socket, this));
+}
+
+int SSLSocketAdapter::StartSSL(const char* hostname, bool restartable) {
+  DCHECK(!restartable);
+
+  // SSLConfigService is not thread-safe, and the default values for SSLConfig
+  // are correct for us, so we don't use the config service to initialize this
+  // object.
+  net::SSLConfig ssl_config;
+  socket_->set_addr(talk_base::SocketAddress(hostname));
+  ssl_socket_.reset(
+      net::ClientSocketFactory::GetDefaultFactory()->CreateSSLClientSocket(
+          socket_.release(), hostname, ssl_config));
+
+  int result = ssl_socket_->Connect(&connected_callback_);
+
+  if (result == net::ERR_IO_PENDING || result == net::OK) {
+    return 0;
+  } else {
+    return result;
+  }
+}
+
+int SSLSocketAdapter::Send(const void* buf, size_t len) {
+  if (!ssl_connected_) {
+    return AsyncSocketAdapter::Send(buf, len);
+  }
+
+  switch (state_) {
+    case STATE_NONE: {
+      transport_buf_ = new net::IOBuffer(len);
+      memcpy(transport_buf_->data(), buf, len);
+
+      int result = ssl_socket_->Write(transport_buf_, len, &io_callback_);
+      if (result == net::ERR_IO_PENDING) {
+        state_ = STATE_WRITE;
+        SetError(EWOULDBLOCK);
+      } else {
+        transport_buf_ = NULL;
+      }
+      return result;
+    }
+    case STATE_WRITE_COMPLETE:
+      transport_buf_ = NULL;
+      state_ = STATE_NONE;
+      return data_transferred_;
+
+    case STATE_READ:
+    case STATE_READ_COMPLETE:
+    case STATE_WRITE:
+      SetError(EWOULDBLOCK);
+      return -1;
+
+    default:
+      NOTREACHED();
+      break;
+  }
+  return -1;
+}
+
+int SSLSocketAdapter::Recv(void* buf, size_t len) {
+  if (!ssl_connected_) {
+    return AsyncSocketAdapter::Recv(buf, len);
+  }
+
+  switch (state_) {
+    case STATE_NONE: {
+      transport_buf_ = new net::IOBuffer(len);
+      int result = ssl_socket_->Read(transport_buf_, len, &io_callback_);
+      if (result >= 0) {
+        memcpy(buf, transport_buf_->data(), len);
+      }
+
+      if (result == net::ERR_IO_PENDING) {
+        state_ = STATE_READ;
+        SetError(EWOULDBLOCK);
+      } else {
+        transport_buf_ = NULL;
+      }
+      return result;
+    }
+    case STATE_READ_COMPLETE:
+      memcpy(buf, transport_buf_->data(), len);
+      transport_buf_ = NULL;
+      state_ = STATE_NONE;
+      return data_transferred_;
+
+    case STATE_READ:
+    case STATE_WRITE:
+    case STATE_WRITE_COMPLETE:
+      SetError(EWOULDBLOCK);
+      return -1;
+
+    default:
+      NOTREACHED();
+      break;
+  }
+  return -1;
+}
+
+void SSLSocketAdapter::OnConnected(int result) {
+  if (result == net::OK) {
+    ssl_connected_ = true;
+    OnConnectEvent(this);
+  }
+}
+
+void SSLSocketAdapter::OnIO(int result) {
+  switch (state_) {
+    case STATE_READ:
+      state_ = STATE_READ_COMPLETE;
+      data_transferred_ = result;
+      break;
+    case STATE_WRITE:
+      state_ = STATE_WRITE_COMPLETE;
+      data_transferred_ = result;
+      break;
+    case STATE_NONE:
+    case STATE_READ_COMPLETE:
+    case STATE_WRITE_COMPLETE:
+    default:
+      NOTREACHED();
+      break;
+  }
+}
+
+TransportSocket::TransportSocket(talk_base::AsyncSocket* socket,
+                                 SSLSocketAdapter *ssl_adapter)
+    : connect_callback_(NULL),
+      read_callback_(NULL),
+      write_callback_(NULL),
+      read_buffer_len_(0),
+      write_buffer_len_(0),
+      socket_(socket),
+      ssl_adapter_(ssl_adapter) {
+    socket_->SignalConnectEvent.connect(this, &TransportSocket::OnConnectEvent);
+    socket_->SignalReadEvent.connect(this, &TransportSocket::OnReadEvent);
+    socket_->SignalWriteEvent.connect(this, &TransportSocket::OnWriteEvent);
+    socket_->SignalCloseEvent.connect(this, &TransportSocket::OnCloseEvent);
+}
+
+int TransportSocket::Connect(net::CompletionCallback* callback) {
+  connect_callback_ = callback;
+  return socket_->Connect(addr_);
+}
+
+void TransportSocket::Disconnect() {
+  socket_->Close();
+}
+
+bool TransportSocket::IsConnected() const {
+  return (socket_->GetState() == talk_base::Socket::CS_CONNECTED);
+}
+
+bool TransportSocket::IsConnectedAndIdle() const {
+  // Not implemented.
+  NOTREACHED();
+  return false;
+}
+
+#if defined(OS_LINUX) || defined(OS_MACOSX)
+int TransportSocket::GetPeerName(struct sockaddr *name, socklen_t *namelen) {
+  talk_base::SocketAddress address = socket_->GetRemoteAddress();
+  address.ToSockAddr(reinterpret_cast<sockaddr_in *>(name));
+  return 0;
+}
+#endif
+
+int TransportSocket::Read(net::IOBuffer* buf, int buf_len,
+                          net::CompletionCallback* callback) {
+  DCHECK(buf);
+  DCHECK(!read_callback_);
+  DCHECK(!read_buffer_.get());
+  int result = socket_->Recv(buf->data(), buf_len);
+  if (result < 0) {
+    result = MapPosixError(socket_->GetError());
+    if (result == net::ERR_IO_PENDING) {
+      read_callback_ = callback;
+      read_buffer_ = buf;
+      read_buffer_len_ = buf_len;
+    }
+  }
+  return result;
+}
+
+int TransportSocket::Write(net::IOBuffer* buf, int buf_len,
+                           net::CompletionCallback* callback) {
+  DCHECK(buf);
+  DCHECK(!write_callback_);
+  DCHECK(!write_buffer_.get());
+  int result = socket_->Send(buf->data(), buf_len);
+  if (result < 0) {
+    result = MapPosixError(socket_->GetError());
+    if (result == net::ERR_IO_PENDING) {
+      write_callback_ = callback;
+      write_buffer_ = buf;
+      write_buffer_len_ = buf_len;
+    }
+  }
+  return result;
+}
+
+bool TransportSocket::SetReceiveBufferSize(int32 size) {
+  // Not implemented.
+  return false;
+}
+
+bool TransportSocket::SetSendBufferSize(int32 size) {
+  // Not implemented.
+  return false;
+}
+
+void TransportSocket::OnConnectEvent(talk_base::AsyncSocket * socket) {
+  if (connect_callback_) {
+    net::CompletionCallback *callback = connect_callback_;
+    connect_callback_ = NULL;
+    callback->RunWithParams(Tuple1<int>(MapPosixError(socket_->GetError())));
+  } else {
+    ssl_adapter_->OnConnectEvent(socket);
+  }
+}
+
+void TransportSocket::OnReadEvent(talk_base::AsyncSocket* socket) {
+  if (read_callback_) {
+    DCHECK(read_buffer_.get());
+    net::CompletionCallback* callback = read_callback_;
+    scoped_refptr<net::IOBuffer> buffer = read_buffer_;
+    int buffer_len = read_buffer_len_;
+
+    read_callback_ = NULL;
+    read_buffer_ = NULL;
+    read_buffer_len_ = 0;
+
+    int result = socket_->Recv(buffer->data(), buffer_len);
+    if (result < 0) {
+      result = MapPosixError(socket_->GetError());
+      if (result == net::ERR_IO_PENDING) {
+        read_callback_ = callback;
+        read_buffer_ = buffer;
+        read_buffer_len_ = buffer_len;
+        return;
+      }
+    }
+    callback->RunWithParams(Tuple1<int>(result));
+  } else {
+    ssl_adapter_->OnReadEvent(socket);
+  }
+}
+
+void TransportSocket::OnWriteEvent(talk_base::AsyncSocket* socket) {
+  if (write_callback_) {
+    DCHECK(write_buffer_.get());
+    net::CompletionCallback* callback = write_callback_;
+    scoped_refptr<net::IOBuffer> buffer = write_buffer_;
+    int buffer_len = write_buffer_len_;
+
+    write_callback_ = NULL;
+    write_buffer_ = NULL;
+    write_buffer_len_ = 0;
+
+    int result = socket_->Send(buffer->data(), buffer_len);
+    if (result < 0) {
+      result = MapPosixError(socket_->GetError());
+      if (result == net::ERR_IO_PENDING) {
+        write_callback_ = callback;
+        write_buffer_ = buffer;
+        write_buffer_len_ = buffer_len;
+        return;
+      }
+    }
+    callback->RunWithParams(Tuple1<int>(result));
+  } else {
+    ssl_adapter_->OnWriteEvent(socket);
+  }
+}
+
+void TransportSocket::OnCloseEvent(talk_base::AsyncSocket* socket, int err) {
+  ssl_adapter_->OnCloseEvent(socket, err);
+}
+
+}  // namespace notifier