Check USB device path access when prompting users to select a device.

chromeos/dbus/permission_broker_client.cc

 // 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/permission_broker_client.h"
 
 #include "base/bind.h"
 #include "base/memory/weak_ptr.h"
 #include "dbus/bus.h"
 #include "dbus/message.h"
 #include "dbus/object_proxy.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
+using permission_broker::kCheckPathAccess;
 using permission_broker::kPermissionBrokerInterface;
 using permission_broker::kPermissionBrokerServiceName;
 using permission_broker::kPermissionBrokerServicePath;
 using permission_broker::kReleaseTcpPort;
 using permission_broker::kReleaseUdpPort;
 using permission_broker::kRequestPathAccess;
 using permission_broker::kRequestTcpPortAccess;
 using permission_broker::kRequestUdpPortAccess;
 
 namespace chromeos {
 
 class PermissionBrokerClientImpl : public PermissionBrokerClient {
  public:
   PermissionBrokerClientImpl() : proxy_(NULL), weak_ptr_factory_(this) {}
 
+  void CheckPathAccess(const std::string& path,
+                       const ResultCallback& callback) override {
+    dbus::MethodCall method_call(kPermissionBrokerInterface, kCheckPathAccess);
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendString(path);
+    proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
+                       base::Bind(&PermissionBrokerClientImpl::OnResponse,
+                                  weak_ptr_factory_.GetWeakPtr(), callback));
+  }
+
   void RequestPathAccess(const std::string& path,
                          const int interface_id,
                          const ResultCallback& callback) override {
     dbus::MethodCall method_call(kPermissionBrokerInterface,
                                  kRequestPathAccess);
     dbus::MessageWriter writer(&method_call);
     writer.AppendString(path);
     writer.AppendInt32(interface_id);
     proxy_->CallMethod(&method_call,
                        dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
@@ skipping 91 matching lines @@
 
 PermissionBrokerClient::PermissionBrokerClient() {}
 
 PermissionBrokerClient::~PermissionBrokerClient() {}
 
 PermissionBrokerClient* PermissionBrokerClient::Create() {
   return new PermissionBrokerClientImpl();
 }
 
 }  // namespace chromeos