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// Copyright (c) 2012 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 "chromeos/dbus/bluetooth_out_of_band_client.h"
#include <map>
#include <string>
#include "base/bind.h"
#include "base/logging.h"
#include "chromeos/dbus/bluetooth_adapter_client.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "device/bluetooth/bluetooth_out_of_band_pairing_data.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
// The BluetoothOutOfBandClient implementation used in production.
class BluetoothOutOfBandClientImpl: public BluetoothOutOfBandClient {
public:
explicit BluetoothOutOfBandClientImpl(dbus::Bus* bus)
: bus_(bus),
weak_ptr_factory_(this) {}
virtual ~BluetoothOutOfBandClientImpl() {}
// BluetoothOutOfBandClient override.
virtual void ReadLocalData(
const dbus::ObjectPath& object_path,
const DataCallback& callback) OVERRIDE {
dbus::MethodCall method_call(
bluetooth_outofband::kBluetoothOutOfBandInterface,
bluetooth_outofband::kReadLocalData);
dbus::ObjectProxy* object_proxy = GetObjectProxy(object_path);
object_proxy->CallMethod(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&BluetoothOutOfBandClientImpl::OnReadLocalData,
weak_ptr_factory_.GetWeakPtr(), callback));
}
// BluetoothOutOfBandClient override.
virtual void AddRemoteData(
const dbus::ObjectPath& object_path,
const std::string& address,
const device::BluetoothOutOfBandPairingData& data,
const SuccessCallback& callback) OVERRIDE {
dbus::MethodCall method_call(
bluetooth_outofband::kBluetoothOutOfBandInterface,
bluetooth_outofband::kAddRemoteData);
dbus::MessageWriter writer(&method_call);
writer.AppendString(address);
writer.AppendArrayOfBytes(
data.hash, device::kBluetoothOutOfBandPairingDataSize);
writer.AppendArrayOfBytes(
data.randomizer, device::kBluetoothOutOfBandPairingDataSize);
dbus::ObjectProxy* object_proxy = GetObjectProxy(object_path);
object_proxy->CallMethod(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&BluetoothOutOfBandClientImpl::ResponseToSuccessCallback,
weak_ptr_factory_.GetWeakPtr(), callback));
}
// BluetoothOutOfBandClient override.
virtual void RemoveRemoteData(
const dbus::ObjectPath& object_path,
const std::string& address,
const SuccessCallback& callback) OVERRIDE {
dbus::MethodCall method_call(
bluetooth_outofband::kBluetoothOutOfBandInterface,
bluetooth_outofband::kRemoveRemoteData);
dbus::MessageWriter writer(&method_call);
writer.AppendString(address);
dbus::ObjectProxy* object_proxy = GetObjectProxy(object_path);
object_proxy->CallMethod(
&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&BluetoothOutOfBandClientImpl::ResponseToSuccessCallback,
weak_ptr_factory_.GetWeakPtr(), callback));
}
private:
// We maintain a collection of dbus object proxies for each binding.
typedef std::map<const dbus::ObjectPath, dbus::ObjectProxy*> ObjectMap;
ObjectMap object_map_;
// Returns a pointer to the object proxy for |object_path|, creating
// it if necessary. This is cached in the ObjectMap.
dbus::ObjectProxy* GetObjectProxy(const dbus::ObjectPath& object_path) {
ObjectMap::iterator iter = object_map_.find(object_path);
if (iter != object_map_.end())
return iter->second;
DCHECK(bus_);
dbus::ObjectProxy* object_proxy = bus_->GetObjectProxy(
bluetooth_outofband::kBluetoothOutOfBandServiceName, object_path);
object_map_[object_path] = object_proxy;
return object_proxy;
}
// Called when a response from ReadLocalOutOfBandPairingData() is received.
void OnReadLocalData(const DataCallback& callback,
dbus::Response* response) {
bool success = false;
device::BluetoothOutOfBandPairingData data;
if (response != NULL) {
dbus::MessageReader reader(response);
uint8_t* bytes = NULL;
size_t length = device::kBluetoothOutOfBandPairingDataSize;
if (reader.PopArrayOfBytes(&bytes, &length)) {
if (length == device::kBluetoothOutOfBandPairingDataSize) {
memcpy(&data.hash, bytes, length);
if (reader.PopArrayOfBytes(&bytes, &length)) {
if (length == device::kBluetoothOutOfBandPairingDataSize) {
memcpy(&data.randomizer, bytes, length);
success = true;
}
}
}
}
}
callback.Run(data, success);
}
// Translates a dbus::Response to a SuccessCallback by assuming success if
// |response| is not NULL.
void ResponseToSuccessCallback(const SuccessCallback& callback,
dbus::Response* response) {
callback.Run(response != NULL);
}
dbus::Bus* bus_;
// Weak pointer factory for generating 'this' pointers that might live longer
// than we do.
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<BluetoothOutOfBandClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(BluetoothOutOfBandClientImpl);
};
// The BluetoothOutOfBandClient implementation used on Linux desktop, which does
// nothing.
class BluetoothOutOfBandClientStubImpl : public BluetoothOutOfBandClient {
public:
// BluetoothOutOfBandClient override.
virtual void ReadLocalData(
const dbus::ObjectPath& object_path,
const DataCallback& callback) OVERRIDE {
VLOG(1) << "ReadLocalData: " << object_path.value();
device::BluetoothOutOfBandPairingData data;
callback.Run(data, false);
}
// BluetoothOutOfBandClient override.
virtual void AddRemoteData(
const dbus::ObjectPath& object_path,
const std::string& address,
const device::BluetoothOutOfBandPairingData& data,
const SuccessCallback& callback) OVERRIDE {
VLOG(1) << "AddRemoteData: " << object_path.value();
callback.Run(false);
}
// BluetoothOutOfBandClient override.
virtual void RemoveRemoteData(
const dbus::ObjectPath& object_path,
const std::string& address,
const SuccessCallback& callback) OVERRIDE {
VLOG(1) << "RemoveRemoteData: " << object_path.value();
callback.Run(false);
}
};
BluetoothOutOfBandClient::BluetoothOutOfBandClient() {}
BluetoothOutOfBandClient::~BluetoothOutOfBandClient() {}
BluetoothOutOfBandClient* BluetoothOutOfBandClient::Create(
DBusClientImplementationType type,
dbus::Bus* bus) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
return new BluetoothOutOfBandClientImpl(bus);
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new BluetoothOutOfBandClientStubImpl();
}
} // namespace chromeos
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