remoting/host/me2me_desktop_environment.cc

   1 // Copyright (c) 2012 The Chromium Authors. 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 "remoting/host/me2me_desktop_environment.h"
   6
   7 #include "base/logging.h"
   8 #include "base/single_thread_task_runner.h"
   9 #include "remoting/base/logging.h"
  10 #include "remoting/host/client_session_control.h"
  11 #include "remoting/host/curtain_mode.h"
  12 #include "remoting/host/desktop_resizer.h"
  13 #include "remoting/host/gnubby_auth_handler.h"
  14 #include "remoting/host/host_window.h"
  15 #include "remoting/host/host_window.h"
  16 #include "remoting/host/host_window_proxy.h"
  17 #include "remoting/host/local_input_monitor.h"
  18 #include "remoting/host/resizing_host_observer.h"
  19 #include "remoting/host/screen_controls.h"
  20 #include "third_party/webrtc/modules/desktop_capture/desktop_capture_options.h"
  21 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
  22
  23 #if defined(OS_POSIX)
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26 #endif  // defined(OS_POSIX)
  27
  28 const char kRateLimitResizeRequests[] = "rateLimitResizeRequests";
  29
  30 namespace remoting {
  31
  32 Me2MeDesktopEnvironment::~Me2MeDesktopEnvironment() {
  33   DCHECK(caller_task_runner()->BelongsToCurrentThread());
  34 }
  35
  36 scoped_ptr<ScreenControls> Me2MeDesktopEnvironment::CreateScreenControls() {
  37   DCHECK(caller_task_runner()->BelongsToCurrentThread());
  38
  39   return make_scoped_ptr(new ResizingHostObserver(DesktopResizer::Create()));
  40 }
  41
  42 std::string Me2MeDesktopEnvironment::GetCapabilities() const {
  43   return kRateLimitResizeRequests;
  44 }
  45
  46 Me2MeDesktopEnvironment::Me2MeDesktopEnvironment(
  47     scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
  48     scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
  49     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner)
  50     : BasicDesktopEnvironment(caller_task_runner,
  51                               input_task_runner,
  52                               ui_task_runner),
  53       gnubby_auth_enabled_(false) {
  54   DCHECK(caller_task_runner->BelongsToCurrentThread());
  55   desktop_capture_options()->set_use_update_notifications(true);
  56 }
  57
  58 scoped_ptr<GnubbyAuthHandler> Me2MeDesktopEnvironment::CreateGnubbyAuthHandler(
  59     protocol::ClientStub* client_stub) {
  60   DCHECK(caller_task_runner()->BelongsToCurrentThread());
  61
  62   if (gnubby_auth_enabled_)
  63     return GnubbyAuthHandler::Create(client_stub);
  64
  65   HOST_LOG << "gnubby auth is not enabled";
  66   return nullptr;
  67 }
  68
  69 bool Me2MeDesktopEnvironment::InitializeSecurity(
  70     base::WeakPtr<ClientSessionControl> client_session_control,
  71     bool curtain_enabled) {
  72   DCHECK(caller_task_runner()->BelongsToCurrentThread());
  73
  74   // Detach the session from the local console if the caller requested.
  75   if (curtain_enabled) {
  76     curtain_ = CurtainMode::Create(caller_task_runner(),
  77                                    ui_task_runner(),
  78                                    client_session_control);
  79     bool active = curtain_->Activate();
  80     if (!active)
  81       LOG(ERROR) << "Failed to activate the curtain mode.";
  82     return active;
  83   }
  84
  85   // Otherwise, if the session is shared with the local user start monitoring
  86   // the local input and create the in-session UI.
  87
  88 #if defined(OS_LINUX)
  89   bool want_user_interface = false;
  90 #elif defined(OS_MACOSX)
  91   // Don't try to display any UI on top of the system's login screen as this
  92   // is rejected by the Window Server on OS X 10.7.4, and prevents the
  93   // capturer from working (http://crbug.com/140984).
  94
  95   // TODO(lambroslambrou): Use a better technique of detecting whether we're
  96   // running in the LoginWindow context, and refactor this into a separate
  97   // function to be used here and in CurtainMode::ActivateCurtain().
  98   bool want_user_interface = getuid() != 0;
  99 #elif defined(OS_WIN)
 100   bool want_user_interface = true;
 101 #endif  // defined(OS_WIN)
 102
 103   // Create the disconnect window.
 104   if (want_user_interface) {
 105     // Create the local input monitor.
 106     local_input_monitor_ = LocalInputMonitor::Create(caller_task_runner(),
 107                                                      input_task_runner(),
 108                                                      ui_task_runner(),
 109                                                      client_session_control);
 110
 111     disconnect_window_ = HostWindow::CreateDisconnectWindow();
 112     disconnect_window_.reset(new HostWindowProxy(
 113         caller_task_runner(),
 114         ui_task_runner(),
 115         disconnect_window_.Pass()));
 116     disconnect_window_->Start(client_session_control);
 117   }
 118
 119   return true;
 120 }
 121
 122 void Me2MeDesktopEnvironment::SetEnableGnubbyAuth(bool gnubby_auth_enabled) {
 123   gnubby_auth_enabled_ = gnubby_auth_enabled;
 124 }
 125
 126 Me2MeDesktopEnvironmentFactory::Me2MeDesktopEnvironmentFactory(
 127     scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
 128     scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
 129     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner)
 130     : BasicDesktopEnvironmentFactory(caller_task_runner,
 131                                      input_task_runner,
 132                                      ui_task_runner),
 133       curtain_enabled_(false) {
 134 }
 135
 136 Me2MeDesktopEnvironmentFactory::~Me2MeDesktopEnvironmentFactory() {
 137 }
 138
 139 scoped_ptr<DesktopEnvironment> Me2MeDesktopEnvironmentFactory::Create(
 140     base::WeakPtr<ClientSessionControl> client_session_control) {
 141   DCHECK(caller_task_runner()->BelongsToCurrentThread());
 142
 143   scoped_ptr<Me2MeDesktopEnvironment> desktop_environment(
 144       new Me2MeDesktopEnvironment(caller_task_runner(),
 145                                   input_task_runner(),
 146                                   ui_task_runner()));
 147   if (!desktop_environment->InitializeSecurity(client_session_control,
 148                                                curtain_enabled_)) {
 149     return nullptr;
 150   }
 151   desktop_environment->SetEnableGnubbyAuth(gnubby_auth_enabled_);
 152
 153   return desktop_environment.Pass();
 154 }
 155
 156 void Me2MeDesktopEnvironmentFactory::SetEnableCurtaining(bool enable) {
 157   DCHECK(caller_task_runner()->BelongsToCurrentThread());
 158
 159   curtain_enabled_ = enable;
 160 }
 161
 162 void Me2MeDesktopEnvironmentFactory::SetEnableGnubbyAuth(
 163     bool gnubby_auth_enabled) {
 164   gnubby_auth_enabled_ = gnubby_auth_enabled;
 165 }
 166
 167 }  // namespace remoting