Bluetooth: Profile support for Chrome OS

device/bluetooth/bluetooth_socket_experimental_chromeos.cc

+// Copyright (c) 2013 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 "device/bluetooth/bluetooth_socket_experimental_chromeos.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <string>
+
+#include "base/logging.h"
+#include "base/memory/ref_counted.h"
+#include "base/safe_strerror_posix.h"
+#include "dbus/file_descriptor.h"
+#include "device/bluetooth/bluetooth_socket.h"
+#include "net/base/io_buffer.h"
+
+namespace chromeos {
+
+BluetoothSocketExperimentalChromeOS::BluetoothSocketExperimentalChromeOS(
+    int fd)
+    : fd_(fd) {
+}
+
+BluetoothSocketExperimentalChromeOS::~BluetoothSocketExperimentalChromeOS() {
+  close(fd_);
+}
+
+bool BluetoothSocketExperimentalChromeOS::Receive(
+    net::GrowableIOBuffer *buffer) {
+  buffer->SetCapacity(1024);
+  ssize_t bytes_read;
+  do {
+    if (buffer->RemainingCapacity() == 0)
+      buffer->SetCapacity(buffer->capacity() * 2);
+    bytes_read = read(fd_, buffer, buffer->RemainingCapacity());
+    if (bytes_read > 0)
+      buffer->set_offset(buffer->offset() + bytes_read);
+  } while (bytes_read > 0);
+
+  if (bytes_read < 0 && errno != EAGAIN && errno != EWOULDBLOCK) {
+    error_message_ = safe_strerror(errno);
+    return false;
+  }
+  return true;
+}
+
+bool BluetoothSocketExperimentalChromeOS::Send(
+    net::DrainableIOBuffer *buffer) {
+  ssize_t bytes_written;
+  do {
+    bytes_written = write(fd_, buffer, buffer->BytesRemaining());
+    if (bytes_written > 0)
+      buffer->DidConsume(bytes_written);
+  } while (buffer->BytesRemaining() > 0 && bytes_written > 0);
+
+  if (bytes_written < 0 && errno != EAGAIN && errno != EWOULDBLOCK) {
+    error_message_ = safe_strerror(errno);
+    return false;
+  }
+  return true;
+}
+
+std::string BluetoothSocketExperimentalChromeOS::GetLastErrorMessage() const {
+  return error_message_;
+}
+
+// static
+scoped_refptr<device::BluetoothSocket>
+BluetoothSocketExperimentalChromeOS::Create(dbus::FileDescriptor* fd) {
+  BluetoothSocketExperimentalChromeOS* bluetooth_socket =
+      new BluetoothSocketExperimentalChromeOS(fd->TakeValue());;
+  return scoped_refptr<BluetoothSocketExperimentalChromeOS>(bluetooth_socket);
+}
+
+}  // namespace chromeos