win: Implement Bluetooth server.

device/bluetooth/bluetooth_profile_win.cc

 // Copyright 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_profile_win.h"
 
 #include "base/bind.h"
+#include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner.h"
+#include "base/strings/stringprintf.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
+#include "device/bluetooth/bluetooth_adapter_win.h"
 #include "device/bluetooth/bluetooth_device_win.h"
 #include "device/bluetooth/bluetooth_service_record.h"
 #include "device/bluetooth/bluetooth_socket_thread_win.h"
 #include "device/bluetooth/bluetooth_socket_win.h"
 
 namespace {
 
 using device::BluetoothAdapter;
 using device::BluetoothDevice;
 using device::BluetoothProfileWin;
@@ skipping 34 matching lines @@
                  socket));
 }
 
 void OnConnectErrorUI(scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
                       const BluetoothProfileWin::ErrorCallback& error_callback,
                       const std::string& error) {
   DCHECK(ui_task_runner->RunsTasksOnCurrentThread());
   error_callback.Run(error);
 }
 
+std::string IPEndPointToBluetoothAddress(const net::IPEndPoint& end_point) {
+  const size_t kBtAddressSize = 6;
+  if (end_point.address().size() != kBtAddressSize)
+    return std::string();
+  return base::StringPrintf("%02X:%02X:%02X:%02X:%02X:%02X",
+      end_point.address()[5],
+      end_point.address()[4],
+      end_point.address()[3],
+      end_point.address()[2],
+      end_point.address()[1],
+      end_point.address()[0]);

[wtc, 2014/04/24 23:09:31]

It would be nice to add a comment to explain why the address appears to be
printed in reverse order.

The format specifier 'X' matches an unsigned int, but end_point.address()[5] is
a uint8. So there appears to be a type mismatch. I think we are relying on C's
integral promotion here. From K & R, 2nd Ed., page 45:

  In the absence of a function prototype, char and short become int,
  and float becomes double.

[xiyuan, 2014/04/25 20:29:29]

Comments added that the address is copyied from a BTH_ADDR that stores Bth
address in little endian. That's why we print in reverse order.

You are right about %X. According to wiki, this works now because "arguments of
types narrower than an int will be promoted to int or unsigned int" in the
variable-length part of a variable-length argument list.

http://en.wikipedia.org/wiki/Stdarg.h

+}
+
 }  // namespace
 
 namespace device {
 
-BluetoothProfileWin::BluetoothProfileWin(const BluetoothUUID& uuid,
-                                         const std::string& name)
-    : BluetoothProfile(), uuid_(uuid), name_(name) {
+BluetoothProfileWin::BluetoothProfileWin()
+    : BluetoothProfile(), rfcomm_channel_(0), weak_ptr_factory_(this) {
 }
 
 BluetoothProfileWin::~BluetoothProfileWin() {
 }
 
 void BluetoothProfileWin::Unregister() {
+  if (profile_socket_)
+    profile_socket_->Close();
+
   delete this;
 }
 
 void BluetoothProfileWin::SetConnectionCallback(
     const ConnectionCallback& callback) {
   connection_callback_ = callback;
 }
 
+void BluetoothProfileWin::Init(const BluetoothUUID& uuid,
+                               const BluetoothProfile::Options& options,
+                               const ProfileCallback& callback) {
+  uuid_ = uuid;
+  name_ = options.name;
+  rfcomm_channel_ = options.channel;
+
+  BluetoothAdapterFactory::GetAdapter(
+    base::Bind(&BluetoothProfileWin::OnGetAdapter,
+               weak_ptr_factory_.GetWeakPtr(),
+               callback));
+}
+
 void BluetoothProfileWin::Connect(
     const BluetoothDeviceWin* device,
     scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
     scoped_refptr<BluetoothSocketThreadWin> socket_thread,
     net::NetLog* net_log,
     const net::NetLog::Source& source,
     const base::Closure& success_callback,
     const ErrorCallback& error_callback) {
   DCHECK(ui_task_runner->RunsTasksOnCurrentThread());
   if (connection_callback_.is_null()) {
     error_callback.Run(kNoConnectionCallback);
     return;
   }
 
   const BluetoothServiceRecord* record = device->GetServiceRecord(uuid_);
   if (!record) {
     error_callback.Run(kProfileNotFound);
     return;
   }
 
   scoped_refptr<BluetoothSocketWin> socket(
       BluetoothSocketWin::CreateBluetoothSocket(
-          *record, ui_task_runner, socket_thread, net_log, source));
+          ui_task_runner, socket_thread, net_log, source));
 
-  socket->Connect(base::Bind(&OnConnectSuccessUI,
+  socket->Connect(*record,
+                  base::Bind(&OnConnectSuccessUI,
                              ui_task_runner,
                              success_callback,
                              connection_callback_,
                              device->GetAddress(),
                              socket),
                   error_callback);
 }
 
+void BluetoothProfileWin::OnGetAdapter(
+    const ProfileCallback& callback,
+    scoped_refptr<BluetoothAdapter> in_adapter) {
+  DCHECK(!adapter_);
+  DCHECK(!profile_socket_);
+
+  adapter_ = in_adapter;
+  profile_socket_ = BluetoothSocketWin::CreateBluetoothSocket(
+      adapter()->ui_task_runner(),
+      adapter()->socket_thread(),
+      NULL,
+      net::NetLog::Source());
+  profile_socket_->StartService(
+      uuid_,
+      name_,
+      rfcomm_channel_,
+      base::Bind(&BluetoothProfileWin::OnRegisterProfileSuccess,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 callback),
+      base::Bind(&BluetoothProfileWin::OnRegisterProfileError,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 callback),
+      base::Bind(&BluetoothProfileWin::OnNewConnection,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void BluetoothProfileWin::OnRegisterProfileSuccess(
+    const ProfileCallback& callback) {
+  callback.Run(this);
+}
+
+void BluetoothProfileWin::OnRegisterProfileError(
+    const ProfileCallback& callback,
+    const std::string& error_message) {
+  callback.Run(NULL);
+  delete this;
+}
+
+void BluetoothProfileWin::OnNewConnection(
+    scoped_refptr<BluetoothSocketWin> connected,
+    const net::IPEndPoint& peer_address) {
+  DCHECK(adapter()->ui_task_runner()->RunsTasksOnCurrentThread());
+  if (connection_callback_.is_null())
+    return;
+
+  std::string device_address = IPEndPointToBluetoothAddress(peer_address);
+  if (device_address.empty()) {
+    LOG(WARNING) << "Failed to accept connection for profile "
+                 << "uuid=" << uuid_.value()
+                 << ", unexpected peer device address.";
+    return;
+  }
+
+  BluetoothDevice* device = adapter_->GetDevice(device_address);
+  if (!device) {
+    LOG(WARNING) << "Failed to accept connection for profile"
+                 << ",uuid=" << uuid_.value()
+                 << ", unknown device=" << device_address;
+    return;
+  }
+
+  connection_callback_.Run(device, connected);
+}
+
+BluetoothAdapterWin* BluetoothProfileWin::adapter() const {
+  DCHECK(adapter_);
+  return static_cast<BluetoothAdapterWin*>(adapter_.get());

[wtc, 2014/04/24 23:09:31]

Just wanted to check that static_cast is the right cast to use here.

[xiyuan, 2014/04/25 20:29:29]

I think it is safe here. |adapter_| holds BluetoothAdapter* which is the base
class of BluetoothAdapterWin.

+}
+
 }  // namespace device