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      1 // Copyright 2013 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 "chrome/browser/chromeos/login/chrome_restart_request.h"
      6 
      7 #include <vector>
      8 
      9 #include "ash/ash_switches.h"
     10 #include "base/command_line.h"
     11 #include "base/memory/weak_ptr.h"
     12 #include "base/message_loop/message_loop.h"
     13 #include "base/path_service.h"
     14 #include "base/prefs/json_pref_store.h"
     15 #include "base/prefs/pref_service.h"
     16 #include "base/process/launch.h"
     17 #include "base/strings/string_split.h"
     18 #include "base/strings/stringprintf.h"
     19 #include "base/sys_info.h"
     20 #include "base/timer/timer.h"
     21 #include "base/values.h"
     22 #include "cc/base/switches.h"
     23 #include "chrome/browser/browser_process.h"
     24 #include "chrome/browser/chromeos/login/user_manager.h"
     25 #include "chrome/browser/lifetime/application_lifetime.h"
     26 #include "chrome/common/chrome_constants.h"
     27 #include "chrome/common/chrome_paths.h"
     28 #include "chrome/common/chrome_switches.h"
     29 #include "chrome/common/url_constants.h"
     30 #include "chromeos/chromeos_switches.h"
     31 #include "chromeos/dbus/dbus_thread_manager.h"
     32 #include "chromeos/dbus/session_manager_client.h"
     33 #include "content/public/browser/browser_thread.h"
     34 #include "content/public/common/content_switches.h"
     35 #include "gpu/command_buffer/service/gpu_switches.h"
     36 #include "media/base/media_switches.h"
     37 #include "ui/base/ui_base_switches.h"
     38 #include "ui/compositor/compositor_switches.h"
     39 #include "ui/events/event_switches.h"
     40 #include "ui/gfx/switches.h"
     41 #include "ui/gl/gl_switches.h"
     42 #include "ui/views/corewm/corewm_switches.h"
     43 #include "url/gurl.h"
     44 
     45 using content::BrowserThread;
     46 
     47 namespace chromeos {
     48 
     49 namespace {
     50 
     51 // Increase logging level for Guest mode to avoid INFO messages in logs.
     52 const char kGuestModeLoggingLevel[] = "1";
     53 
     54 // Format of command line switch.
     55 const char kSwitchFormatString[] = " --%s=\"%s\"";
     56 
     57 // Derives the new command line from |base_command_line| by doing the following:
     58 // - Forward a given switches list to new command;
     59 // - Set start url if given;
     60 // - Append/override switches using |new_switches|;
     61 std::string DeriveCommandLine(const GURL& start_url,
     62                               const CommandLine& base_command_line,
     63                               const base::DictionaryValue& new_switches,
     64                               CommandLine* command_line) {
     65   DCHECK_NE(&base_command_line, command_line);
     66 
     67   static const char* kForwardSwitches[] = {
     68       ::switches::kAllowWebUICompositing,
     69       ::switches::kDeviceManagementUrl,
     70       ::switches::kDisableAccelerated2dCanvas,
     71       ::switches::kDisableAcceleratedOverflowScroll,
     72       ::switches::kDisableAcceleratedPlugins,
     73       ::switches::kDisableAcceleratedVideoDecode,
     74       ::switches::kDisableBrowserPluginCompositing,
     75       ::switches::kDisableDeadlineScheduling,
     76       ::switches::kDisableDelegatedRenderer,
     77       ::switches::kDisableFiltersOverIPC,
     78       ::switches::kDisableForceCompositingMode,
     79       ::switches::kDisableGpuShaderDiskCache,
     80       ::switches::kDisableGpuWatchdog,
     81       ::switches::kDisableGpuCompositing,
     82       ::switches::kDisablePrefixedEncryptedMedia,
     83       ::switches::kDisablePanelFitting,
     84       ::switches::kDisableSeccompFilterSandbox,
     85       ::switches::kDisableSetuidSandbox,
     86       ::switches::kDisableThreadedCompositing,
     87       ::switches::kDisableTouchDragDrop,
     88       ::switches::kDisableTouchEditing,
     89       ::switches::kDisableUniversalAcceleratedOverflowScroll,
     90       ::switches::kDisableUnprefixedMediaSource,
     91       ::switches::kDisableWebKitMediaSource,
     92       ::switches::kDisableAcceleratedFixedRootBackground,
     93       ::switches::kEnableAcceleratedFixedRootBackground,
     94       ::switches::kEnableAcceleratedOverflowScroll,
     95       ::switches::kEnableBeginFrameScheduling,
     96       ::switches::kEnableCompositingForFixedPosition,
     97       ::switches::kEnableDeadlineScheduling,
     98       ::switches::kEnableDelegatedRenderer,
     99       ::switches::kEnableEncryptedMedia,
    100       ::switches::kEnableGestureTapHighlight,
    101       ::switches::kDisableGestureTapHighlight,
    102       ::switches::kDisableGpuSandbox,
    103       ::switches::kEnableLogging,
    104       ::switches::kEnablePinch,
    105       ::switches::kEnableRepaintAfterLayout,
    106       ::switches::kEnableThreadedCompositing,
    107       ::switches::kEnableTouchDragDrop,
    108       ::switches::kEnableTouchEditing,
    109       ::switches::kEnableUniversalAcceleratedOverflowScroll,
    110       ::switches::kEnableViewport,
    111       ::switches::kEnableViewportMeta,
    112       ::switches::kMainFrameResizesAreOrientationChanges,
    113       ::switches::kForceDeviceScaleFactor,
    114       ::switches::kGpuStartupDialog,
    115       ::switches::kGpuSandboxAllowSysVShm,
    116       ::switches::kMultiProfiles,
    117       ::switches::kNoSandbox,
    118       ::switches::kPpapiFlashArgs,
    119       ::switches::kPpapiFlashInProcess,
    120       ::switches::kPpapiFlashPath,
    121       ::switches::kPpapiFlashVersion,
    122       ::switches::kPpapiInProcess,
    123       ::switches::kRendererStartupDialog,
    124       ::switches::kEnableShareGroupAsyncTextureUpload,
    125       ::switches::kTabCaptureUpscaleQuality,
    126       ::switches::kTabCaptureDownscaleQuality,
    127 #if defined(USE_XI2_MT)
    128       ::switches::kTouchCalibration,
    129 #endif
    130       ::switches::kTouchDevices,
    131       ::switches::kTouchEvents,
    132       ::switches::kTouchOptimizedUI,
    133       ::switches::kUIDisableDeadlineScheduling,
    134       ::switches::kUIDisableThreadedCompositing,
    135       ::switches::kUIEnableDeadlineScheduling,
    136       ::switches::kUIMaxFramesPending,
    137       ::switches::kUIPrioritizeInGpuProcess,
    138 #if defined(USE_CRAS)
    139       ::switches::kUseCras,
    140 #endif
    141       ::switches::kUseGL,
    142       ::switches::kUserDataDir,
    143       ::switches::kV,
    144       ::switches::kVModule,
    145       ::switches::kWebGLCommandBufferSizeKb,
    146       ::switches::kEnableWebGLDraftExtensions,
    147 #if defined(ENABLE_WEBRTC)
    148       ::switches::kDisableWebRtcHWDecoding,
    149       ::switches::kDisableWebRtcHWEncoding,
    150       ::switches::kEnableAudioTrackProcessing,
    151       ::switches::kEnableWebRtcHWVp8Encoding,
    152 #endif
    153       ash::switches::kAshDefaultWallpaperLarge,
    154       ash::switches::kAshDefaultWallpaperSmall,
    155 #if defined(OS_CHROMEOS)
    156       ash::switches::kAshDisableAudioDeviceMenu,
    157 #endif
    158       ash::switches::kAshGuestWallpaperLarge,
    159       ash::switches::kAshGuestWallpaperSmall,
    160       ash::switches::kAshHostWindowBounds,
    161       ash::switches::kAshTouchHud,
    162       ash::switches::kAuraLegacyPowerButton,
    163       // Please keep these in alphabetical order. Non-UI Compositor switches
    164       // here should also be added to
    165       // content/browser/renderer_host/render_process_host_impl.cc.
    166       cc::switches::kBackgroundColorInsteadOfCheckerboard,
    167       cc::switches::kCompositeToMailbox,
    168       cc::switches::kDisableCompositedAntialiasing,
    169       cc::switches::kDisableCompositorTouchHitTesting,
    170       cc::switches::kDisableImplSidePainting,
    171       cc::switches::kDisableMapImage,
    172       cc::switches::kDisableThreadedAnimation,
    173       cc::switches::kEnableGPURasterization,
    174       cc::switches::kEnableImplSidePainting,
    175       cc::switches::kEnableMapImage,
    176       cc::switches::kEnablePartialSwap,
    177       cc::switches::kEnablePerTilePainting,
    178       cc::switches::kEnablePinchVirtualViewport,
    179       cc::switches::kEnableTopControlsPositionCalculation,
    180       cc::switches::kMaxTilesForInterestArea,
    181       cc::switches::kMaxUnusedResourceMemoryUsagePercentage,
    182       cc::switches::kNumRasterThreads,
    183       cc::switches::kShowCompositedLayerBorders,
    184       cc::switches::kShowFPSCounter,
    185       cc::switches::kShowLayerAnimationBounds,
    186       cc::switches::kShowNonOccludingRects,
    187       cc::switches::kShowOccludingRects,
    188       cc::switches::kShowPropertyChangedRects,
    189       cc::switches::kShowReplicaScreenSpaceRects,
    190       cc::switches::kShowScreenSpaceRects,
    191       cc::switches::kShowSurfaceDamageRects,
    192       cc::switches::kSlowDownRasterScaleFactor,
    193       cc::switches::kTraceOverdraw,
    194       cc::switches::kUIDisablePartialSwap,
    195       cc::switches::kUIEnablePerTilePainting,
    196       chromeos::switches::kDbusStub,
    197       chromeos::switches::kDisableLoginAnimations,
    198       chromeos::switches::kDisableOobeAnimation,
    199       chromeos::switches::kHasChromeOSDiamondKey,
    200       chromeos::switches::kHasChromeOSKeyboard,
    201       chromeos::switches::kLoginProfile,
    202       chromeos::switches::kNaturalScrollDefault,
    203       ::switches::kEnableBrowserTextSubpixelPositioning,
    204       ::switches::kEnableWebkitTextSubpixelPositioning,
    205       views::corewm::switches::kNoDropShadows,
    206       views::corewm::switches::kWindowAnimationsDisabled,
    207   };
    208   command_line->CopySwitchesFrom(base_command_line,
    209                                  kForwardSwitches,
    210                                  arraysize(kForwardSwitches));
    211 
    212   if (start_url.is_valid())
    213     command_line->AppendArg(start_url.spec());
    214 
    215   for (base::DictionaryValue::Iterator it(new_switches);
    216        !it.IsAtEnd();
    217        it.Advance()) {
    218     std::string value;
    219     CHECK(it.value().GetAsString(&value));
    220     command_line->AppendSwitchASCII(it.key(), value);
    221   }
    222 
    223   std::string cmd_line_str = command_line->GetCommandLineString();
    224   // Special workaround for the arguments that should be quoted.
    225   // Copying switches won't be needed when Guest mode won't need restart
    226   // http://crosbug.com/6924
    227   if (base_command_line.HasSwitch(::switches::kRegisterPepperPlugins)) {
    228     cmd_line_str += base::StringPrintf(
    229         kSwitchFormatString,
    230         ::switches::kRegisterPepperPlugins,
    231         base_command_line.GetSwitchValueNative(
    232             ::switches::kRegisterPepperPlugins).c_str());
    233   }
    234 
    235   // TODO(zelidrag): Remove this hack that get us around compositing bug from
    236   // http://crbug.com/179256 once that bug is resolved.
    237   if (command_line->HasSwitch(::switches::kForceAppMode)) {
    238     std::string switch_to_remove("--");
    239     switch_to_remove.append(cc::switches::kEnablePartialSwap);
    240     cmd_line_str = cmd_line_str.replace(cmd_line_str.find(switch_to_remove),
    241                                         switch_to_remove.length(), "");
    242   }
    243 
    244   return cmd_line_str;
    245 }
    246 
    247 // Simulates a session manager restart by launching give command line
    248 // and exit current process.
    249 void ReLaunch(const std::string& command_line) {
    250   std::vector<std::string> argv;
    251 
    252   // This is not a proper way to get |argv| but it's good enough for debugging.
    253   base::SplitString(command_line, ' ', &argv);
    254 
    255   base::LaunchProcess(argv, base::LaunchOptions(), NULL);
    256   chrome::AttemptUserExit();
    257 }
    258 
    259 // Empty function that run by the local state task runner to ensure last
    260 // commit goes through.
    261 void EnsureLocalStateIsWritten() {}
    262 
    263 // Wraps the work of sending chrome restart request to session manager.
    264 // If local state is present, try to commit it first. The request is fired when
    265 // the commit goes through or some time (3 seconds) has elapsed.
    266 class ChromeRestartRequest
    267     : public base::SupportsWeakPtr<ChromeRestartRequest> {
    268  public:
    269   explicit ChromeRestartRequest(const std::string& command_line);
    270   ~ChromeRestartRequest();
    271 
    272   // Starts the request.
    273   void Start();
    274 
    275  private:
    276   // Fires job restart request to session manager.
    277   void RestartJob();
    278 
    279   const int pid_;
    280   const std::string command_line_;
    281   base::OneShotTimer<ChromeRestartRequest> timer_;
    282 
    283   DISALLOW_COPY_AND_ASSIGN(ChromeRestartRequest);
    284 };
    285 
    286 ChromeRestartRequest::ChromeRestartRequest(const std::string& command_line)
    287     : pid_(getpid()),
    288       command_line_(command_line) {}
    289 
    290 ChromeRestartRequest::~ChromeRestartRequest() {}
    291 
    292 void ChromeRestartRequest::Start() {
    293   VLOG(1) << "Requesting a restart with PID " << pid_
    294           << " and command line: " << command_line_;
    295 
    296   // Session Manager may kill the chrome anytime after this point.
    297   // Write exit_cleanly and other stuff to the disk here.
    298   g_browser_process->EndSession();
    299 
    300   PrefService* local_state = g_browser_process->local_state();
    301   if (!local_state) {
    302     RestartJob();
    303     return;
    304   }
    305 
    306   // XXX: normally this call must not be needed, however RestartJob
    307   // just kills us so settings may be lost. See http://crosbug.com/13102
    308   local_state->CommitPendingWrite();
    309   timer_.Start(
    310       FROM_HERE, base::TimeDelta::FromSeconds(3), this,
    311       &ChromeRestartRequest::RestartJob);
    312 
    313   // Post a task to local state task runner thus it occurs last on the task
    314   // queue, so it would be executed after committing pending write on that
    315   // thread.
    316   scoped_refptr<base::SequencedTaskRunner> local_state_task_runner =
    317       JsonPrefStore::GetTaskRunnerForFile(
    318           base::FilePath(chrome::kLocalStorePoolName),
    319           BrowserThread::GetBlockingPool());
    320   local_state_task_runner->PostTaskAndReply(
    321       FROM_HERE,
    322       base::Bind(&EnsureLocalStateIsWritten),
    323       base::Bind(&ChromeRestartRequest::RestartJob, AsWeakPtr()));
    324 }
    325 
    326 void ChromeRestartRequest::RestartJob() {
    327   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    328 
    329   DBusThreadManager::Get()->GetSessionManagerClient()->RestartJob(
    330       pid_, command_line_);
    331 
    332   delete this;
    333 }
    334 
    335 }  // namespace
    336 
    337 std::string GetOffTheRecordCommandLine(
    338     const GURL& start_url,
    339     const CommandLine& base_command_line,
    340     CommandLine* command_line) {
    341   base::DictionaryValue otr_switches;
    342   otr_switches.SetString(switches::kGuestSession, std::string());
    343   otr_switches.SetString(::switches::kIncognito, std::string());
    344   otr_switches.SetString(::switches::kLoggingLevel, kGuestModeLoggingLevel);
    345   otr_switches.SetString(switches::kLoginUser, UserManager::kGuestUserName);
    346 
    347   // Override the home page.
    348   otr_switches.SetString(::switches::kHomePage,
    349                          GURL(chrome::kChromeUINewTabURL).spec());
    350 
    351   return DeriveCommandLine(start_url,
    352                            base_command_line,
    353                            otr_switches,
    354                            command_line);
    355 }
    356 
    357 void RestartChrome(const std::string& command_line) {
    358   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    359 
    360   static bool restart_requested = false;
    361   if (restart_requested) {
    362     NOTREACHED() << "Request chrome restart for more than once.";
    363   }
    364   restart_requested = true;
    365 
    366   if (!base::SysInfo::IsRunningOnChromeOS()) {
    367     // Relaunch chrome without session manager on dev box.
    368     ReLaunch(command_line);
    369     return;
    370   }
    371 
    372   // ChromeRestartRequest deletes itself after request sent to session manager.
    373   (new ChromeRestartRequest(command_line))->Start();
    374 }
    375 
    376 }  // namespace chromeos
    377