src/xwalk/application/browser/linux/running_application_object.cc

   1 // Copyright (c) 2013 Intel Corporation. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "xwalk/application/browser/linux/running_application_object.h"
   6
   7 #include <string>
   8 #include "base/values.h"
   9 #include "base/bind.h"
  10 #include "content/public/browser/browser_thread.h"
  11 #include "dbus/bus.h"
  12 #include "dbus/message.h"
  13 #include "dbus/exported_object.h"
  14 #include "xwalk/application/browser/application_tizen.h"
  15 #include "xwalk/application/browser/linux/running_applications_manager.h"
  16
  17 namespace {
  18
  19 // D-Bus Interface implemented by objects that represent running
  20 // applications.
  21 //
  22 // Methods:
  23 //
  24 //   Terminate()
  25 //     Will terminate the running application. This object will be unregistered
  26 //     from D-Bus.
  27 //
  28 // Properties:
  29 //
  30 //   readonly string AppID
  31 const char kRunningApplicationDBusInterface[] =
  32     "org.crosswalkproject.Running.Application1";
  33
  34 const char kRunningApplicationDBusError[] =
  35     "org.crosswalkproject.Running.Application.Error";
  36
  37
  38 }  // namespace
  39
  40 namespace xwalk {
  41 namespace application {
  42
  43 RunningApplicationObject::RunningApplicationObject(
  44     scoped_refptr<dbus::Bus> bus,
  45     const std::string& app_id,
  46     const std::string& launcher_name,
  47     Application* application)
  48     : dbus::ManagedObject(bus, GetRunningPathForAppID(app_id)),
  49       bus_(bus),
  50       launcher_name_(launcher_name),
  51       application_(application) {
  52   ListenForOwnerChange();
  53
  54   properties()->Set(
  55       kRunningApplicationDBusInterface, "AppID",
  56       scoped_ptr<base::Value>(base::Value::CreateStringValue(app_id)));
  57
  58   dbus_object()->ExportMethod(
  59       kRunningApplicationDBusInterface, "Terminate",
  60       base::Bind(&RunningApplicationObject::OnTerminate,
  61                  base::Unretained(this), Application::Normal),
  62       base::Bind(&RunningApplicationObject::OnExported,
  63                  base::Unretained(this)));
  64
  65   dbus_object()->ExportMethod(
  66       kRunningApplicationDBusInterface, "ForceTerminate",
  67       base::Bind(&RunningApplicationObject::OnTerminate,
  68                  base::Unretained(this), Application::Immediate),
  69       base::Bind(&RunningApplicationObject::OnExported,
  70                  base::Unretained(this)));
  71
  72   dbus_object()->ExportMethod(
  73       kRunningApplicationDBusInterface, "GetEPChannel",
  74       base::Bind(&RunningApplicationObject::OnGetExtensionProcessChannel,
  75                  base::Unretained(this)),
  76       base::Bind(&RunningApplicationObject::OnExported,
  77                  base::Unretained(this)));
  78
  79 #if defined(OS_TIZEN)
  80   dbus_object()->ExportMethod(
  81       kRunningApplicationDBusInterface, "Hide",
  82       base::Bind(&RunningApplicationObject::OnHide,
  83                  base::Unretained(this)),
  84       base::Bind(&RunningApplicationObject::OnExported,
  85                  base::Unretained(this)));
  86 #endif
  87 }
  88
  89 RunningApplicationObject::~RunningApplicationObject() {
  90   UnlistenForOwnerChange();
  91 }
  92
  93 void RunningApplicationObject::TerminateApplication(
  94     Application::TerminationMode mode) {
  95   // The application might be still running after 'Terminate' call
  96   // (if 'mode == Normal' and it contains 'OnSuspend' handlers),
  97   // so we do not call 'UnlistenForOwnerChange' here - it will
  98   // be called anyway right before the actual 'Application' instance
  99   // deletion.
 100   application_->Terminate(mode);
 101 }
 102
 103 void RunningApplicationObject::OnExported(const std::string& interface_name,
 104                                           const std::string& method_name,
 105                                           bool success) {
 106   if (!success) {
 107     LOG(WARNING) << "Error exporting method '" << interface_name
 108                  << "." << method_name << "' in '"
 109                  << path().value() << "'.";
 110   }
 111 }
 112
 113 void RunningApplicationObject::OnTerminate(
 114     Application::TerminationMode mode,
 115     dbus::MethodCall* method_call,
 116     dbus::ExportedObject::ResponseSender response_sender) {
 117   // We only allow the caller of Launch() to call Terminate().
 118   if (method_call->GetSender() != launcher_name_) {
 119     scoped_ptr<dbus::ErrorResponse> error_response =
 120         dbus::ErrorResponse::FromMethodCall(method_call,
 121                                             kRunningApplicationDBusError,
 122                                             "Not permitted");
 123     response_sender.Run(error_response.PassAs<dbus::Response>());
 124     return;
 125   }
 126
 127   TerminateApplication(mode);
 128
 129   scoped_ptr<dbus::Response> response =
 130       dbus::Response::FromMethodCall(method_call);
 131   response_sender.Run(response.Pass());
 132 }
 133
 134 void RunningApplicationObject::OnGetExtensionProcessChannel(
 135     dbus::MethodCall* method_call,
 136     dbus::ExportedObject::ResponseSender response_sender) {
 137   content::BrowserThread::PostTask(
 138       content::BrowserThread::FILE,
 139       FROM_HERE,
 140       base::Bind(&RunningApplicationObject::SendChannel,
 141                  base::Unretained(this),
 142                  method_call,
 143                  response_sender));
 144 }
 145
 146 #if defined(OS_TIZEN)
 147 void RunningApplicationObject::OnHide(
 148     dbus::MethodCall* method_call,
 149     dbus::ExportedObject::ResponseSender response_sender) {
 150   if (method_call->GetSender() != launcher_name_) {
 151     scoped_ptr<dbus::ErrorResponse> error_response =
 152         dbus::ErrorResponse::FromMethodCall(method_call,
 153                                             kRunningApplicationDBusError,
 154                                             "Not permitted");
 155     response_sender.Run(error_response.PassAs<dbus::Response>());
 156     return;
 157   }
 158
 159   ToApplicationTizen(application_)->Hide();
 160
 161   scoped_ptr<dbus::Response> response =
 162       dbus::Response::FromMethodCall(method_call);
 163   response_sender.Run(response.Pass());
 164 }
 165 #endif
 166
 167 void RunningApplicationObject::ListenForOwnerChange() {
 168   owner_change_callback_ =
 169       base::Bind(&RunningApplicationObject::OnNameOwnerChanged,
 170                  base::Unretained(this));
 171   bus_->ListenForServiceOwnerChange(launcher_name_, owner_change_callback_);
 172 }
 173
 174 void RunningApplicationObject::UnlistenForOwnerChange() {
 175   if (owner_change_callback_.is_null())
 176     return;
 177   bus_->UnlistenForServiceOwnerChange(launcher_name_, owner_change_callback_);
 178   owner_change_callback_.Reset();
 179 }
 180
 181 void RunningApplicationObject::OnNameOwnerChanged(
 182     const std::string& service_owner) {
 183   if (service_owner.empty()) {
 184     // The process that sent the 'Launch' message has exited the session bus,
 185     // we should kill the Running Application.
 186     OnLauncherDisappeared();
 187   }
 188 }
 189
 190 void RunningApplicationObject::OnLauncherDisappeared() {
 191   // Do not care about 'OnSuspend' handlers if the launcher is already killed.
 192   TerminateApplication(Application::Immediate);
 193 }
 194
 195 void RunningApplicationObject::SendChannel(
 196     dbus::MethodCall* method_call,
 197     dbus::ExportedObject::ResponseSender response_sender) {
 198   scoped_ptr<dbus::Response> response =
 199       dbus::Response::FromMethodCall(method_call);
 200
 201   int fd = ep_bp_channel_.socket.fd;
 202   if (fd == -1) {  // EP was not yet created, return empty response.
 203     response_sender.Run(response.Pass());
 204     return;
 205   }
 206
 207   dbus::MessageWriter writer(response.get());
 208   writer.AppendString(ep_bp_channel_.name);
 209
 210   scoped_ptr<dbus::FileDescriptor> client_fd(new dbus::FileDescriptor(fd));
 211   client_fd->CheckValidity();
 212   CHECK(client_fd->is_valid());
 213   writer.AppendFileDescriptor(*client_fd);
 214
 215   response_sender.Run(response.Pass());
 216 }
 217
 218 void RunningApplicationObject::ExtensionProcessCreated(
 219     const IPC::ChannelHandle& handle) {
 220   ep_bp_channel_ = handle;
 221   dbus::Signal signal(kRunningApplicationDBusInterface, "EPChannelCreated");
 222   dbus_object()->SendSignal(&signal);
 223 }
 224
 225 }  // namespace application
 226 }  // namespace xwalk