widget/GfxInfoBase.cpp

   1 /* vim: se cin sw=2 ts=2 et : */
   2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "mozilla/ArrayUtils.h"
   9
  10 #include "GfxInfoBase.h"
  11
  12 #include <mutex>  // std::call_once
  13
  14 #include "GfxDriverInfo.h"
  15 #include "js/Array.h"  // JS::GetArrayLength, JS::NewArrayObject
  16 #include "nsCOMPtr.h"
  17 #include "nsCOMArray.h"
  18 #include "nsString.h"
  19 #include "nsUnicharUtils.h"
  20 #include "nsVersionComparator.h"
  21 #include "mozilla/Services.h"
  22 #include "mozilla/Observer.h"
  23 #include "nsIObserver.h"
  24 #include "nsIObserverService.h"
  25 #include "nsIScreenManager.h"
  26 #include "nsTArray.h"
  27 #include "nsXULAppAPI.h"
  28 #include "nsIXULAppInfo.h"
  29 #include "mozilla/ClearOnShutdown.h"
  30 #include "mozilla/Preferences.h"
  31 #include "mozilla/StaticPrefs_gfx.h"
  32 #include "mozilla/gfx/2D.h"
  33 #include "mozilla/gfx/GPUProcessManager.h"
  34 #include "mozilla/gfx/Logging.h"
  35 #include "mozilla/gfx/gfxVars.h"
  36 #include "mozilla/layers/PaintThread.h"
  37
  38 #include "gfxPlatform.h"
  39 #include "gfxConfig.h"
  40 #include "DriverCrashGuard.h"
  41
  42 using namespace mozilla::widget;
  43 using namespace mozilla;
  44 using mozilla::MutexAutoLock;
  45
  46 nsTArray<GfxDriverInfo>* GfxInfoBase::sDriverInfo;
  47 StaticAutoPtr<nsTArray<gfx::GfxInfoFeatureStatus>> GfxInfoBase::sFeatureStatus;
  48 bool GfxInfoBase::sDriverInfoObserverInitialized;
  49 bool GfxInfoBase::sShutdownOccurred;
  50
  51 // Call this when setting sFeatureStatus to a non-null pointer to
  52 // ensure destruction even if the GfxInfo component is never instantiated.
  53 static void InitFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>* aPtr) {
  54   static std::once_flag sOnce;
  55   std::call_once(sOnce, [] { ClearOnShutdown(&GfxInfoBase::sFeatureStatus); });
  56   GfxInfoBase::sFeatureStatus = aPtr;
  57 }
  58
  59 // Observes for shutdown so that the child GfxDriverInfo list is freed.
  60 class ShutdownObserver : public nsIObserver {
  61   virtual ~ShutdownObserver() = default;
  62
  63  public:
  64   ShutdownObserver() = default;
  65
  66   NS_DECL_ISUPPORTS
  67
  68   NS_IMETHOD Observe(nsISupports* subject, const char* aTopic,
  69                      const char16_t* aData) override {
  70     MOZ_ASSERT(strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0);
  71
  72     delete GfxInfoBase::sDriverInfo;
  73     GfxInfoBase::sDriverInfo = nullptr;
  74
  75     for (auto& deviceFamily : GfxDriverInfo::sDeviceFamilies) {
  76       delete deviceFamily;
  77       deviceFamily = nullptr;
  78     }
  79
  80     for (auto& desktop : GfxDriverInfo::sDesktopEnvironment) {
  81       delete desktop;
  82       desktop = nullptr;
  83     }
  84
  85     for (auto& windowProtocol : GfxDriverInfo::sWindowProtocol) {
  86       delete windowProtocol;
  87       windowProtocol = nullptr;
  88     }
  89
  90     for (auto& deviceVendor : GfxDriverInfo::sDeviceVendors) {
  91       delete deviceVendor;
  92       deviceVendor = nullptr;
  93     }
  94
  95     for (auto& driverVendor : GfxDriverInfo::sDriverVendors) {
  96       delete driverVendor;
  97       driverVendor = nullptr;
  98     }
  99
 100     GfxInfoBase::sShutdownOccurred = true;
 101
 102     return NS_OK;
 103   }
 104 };
 105
 106 NS_IMPL_ISUPPORTS(ShutdownObserver, nsIObserver)
 107
 108 static void InitGfxDriverInfoShutdownObserver() {
 109   if (GfxInfoBase::sDriverInfoObserverInitialized) return;
 110
 111   GfxInfoBase::sDriverInfoObserverInitialized = true;
 112
 113   nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
 114   if (!observerService) {
 115     NS_WARNING("Could not get observer service!");
 116     return;
 117   }
 118
 119   ShutdownObserver* obs = new ShutdownObserver();
 120   observerService->AddObserver(obs, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
 121 }
 122
 123 using namespace mozilla::widget;
 124 using namespace mozilla::gfx;
 125 using namespace mozilla;
 126
 127 NS_IMPL_ISUPPORTS(GfxInfoBase, nsIGfxInfo, nsIObserver,
 128                   nsISupportsWeakReference)
 129
 130 #define BLOCKLIST_PREF_BRANCH "gfx.blacklist."
 131 #define SUGGESTED_VERSION_PREF BLOCKLIST_PREF_BRANCH "suggested-driver-version"
 132
 133 static const char* GetPrefNameForFeature(int32_t aFeature) {
 134   const char* name = nullptr;
 135   switch (aFeature) {
 136     case nsIGfxInfo::FEATURE_DIRECT2D:
 137       name = BLOCKLIST_PREF_BRANCH "direct2d";
 138       break;
 139     case nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS:
 140       name = BLOCKLIST_PREF_BRANCH "layers.direct3d9";
 141       break;
 142     case nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS:
 143       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10";
 144       break;
 145     case nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS:
 146       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10-1";
 147       break;
 148     case nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS:
 149       name = BLOCKLIST_PREF_BRANCH "layers.direct3d11";
 150       break;
 151     case nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE:
 152       name = BLOCKLIST_PREF_BRANCH "direct3d11angle";
 153       break;
 154     case nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING:
 155       name = BLOCKLIST_PREF_BRANCH "hardwarevideodecoding";
 156       break;
 157     case nsIGfxInfo::FEATURE_OPENGL_LAYERS:
 158       name = BLOCKLIST_PREF_BRANCH "layers.opengl";
 159       break;
 160     case nsIGfxInfo::FEATURE_WEBGL_OPENGL:
 161       name = BLOCKLIST_PREF_BRANCH "webgl.opengl";
 162       break;
 163     case nsIGfxInfo::FEATURE_WEBGL_ANGLE:
 164       name = BLOCKLIST_PREF_BRANCH "webgl.angle";
 165       break;
 166     case nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA:
 167       name = BLOCKLIST_PREF_BRANCH "webgl.msaa";
 168       break;
 169     case nsIGfxInfo::FEATURE_STAGEFRIGHT:
 170       name = BLOCKLIST_PREF_BRANCH "stagefright";
 171       break;
 172     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264:
 173       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.h264";
 174       break;
 175     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE:
 176       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.encode";
 177       break;
 178     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE:
 179       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.decode";
 180       break;
 181     case nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION:
 182       name = BLOCKLIST_PREF_BRANCH "canvas2d.acceleration";
 183       break;
 184     case nsIGfxInfo::FEATURE_DX_INTEROP2:
 185       name = BLOCKLIST_PREF_BRANCH "dx.interop2";
 186       break;
 187     case nsIGfxInfo::FEATURE_GPU_PROCESS:
 188       name = BLOCKLIST_PREF_BRANCH "gpu.process";
 189       break;
 190     case nsIGfxInfo::FEATURE_WEBGL2:
 191       name = BLOCKLIST_PREF_BRANCH "webgl2";
 192       break;
 193     case nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX:
 194       name = BLOCKLIST_PREF_BRANCH "d3d11.keyed.mutex";
 195       break;
 196     case nsIGfxInfo::FEATURE_WEBRENDER:
 197       name = BLOCKLIST_PREF_BRANCH "webrender";
 198       break;
 199     case nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR:
 200       name = BLOCKLIST_PREF_BRANCH "webrender.compositor";
 201       break;
 202     case nsIGfxInfo::FEATURE_DX_NV12:
 203       name = BLOCKLIST_PREF_BRANCH "dx.nv12";
 204       break;
 205     case nsIGfxInfo::FEATURE_DX_P010:
 206       name = BLOCKLIST_PREF_BRANCH "dx.p010";
 207       break;
 208     case nsIGfxInfo::FEATURE_DX_P016:
 209       name = BLOCKLIST_PREF_BRANCH "dx.p016";
 210       break;
 211     case nsIGfxInfo::FEATURE_VP8_HW_DECODE:
 212     case nsIGfxInfo::FEATURE_VP9_HW_DECODE:
 213       // We don't provide prefs for these features as these are
 214       // not handling downloadable blocklist.
 215       break;
 216     case nsIGfxInfo::FEATURE_GL_SWIZZLE:
 217       name = BLOCKLIST_PREF_BRANCH "gl.swizzle";
 218       break;
 219     case nsIGfxInfo::FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS:
 220       name = BLOCKLIST_PREF_BRANCH "webrender.scissored_cache_clears";
 221       break;
 222     case nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS:
 223       name = BLOCKLIST_PREF_BRANCH "webgl.allow-oop";
 224       break;
 225     case nsIGfxInfo::FEATURE_THREADSAFE_GL:
 226       name = BLOCKLIST_PREF_BRANCH "gl.threadsafe";
 227       break;
 228     case nsIGfxInfo::FEATURE_WEBRENDER_SOFTWARE:
 229       name = BLOCKLIST_PREF_BRANCH "webrender.software";
 230       break;
 231     case nsIGfxInfo::FEATURE_WEBRENDER_OPTIMIZED_SHADERS:
 232       name = BLOCKLIST_PREF_BRANCH "webrender.optimized-shaders";
 233       break;
 234     case nsIGfxInfo::FEATURE_X11_EGL:
 235       name = BLOCKLIST_PREF_BRANCH "x11.egl";
 236       break;
 237     case nsIGfxInfo::FEATURE_DMABUF:
 238       name = BLOCKLIST_PREF_BRANCH "dmabuf";
 239       break;
 240     default:
 241       MOZ_ASSERT_UNREACHABLE("Unexpected nsIGfxInfo feature?!");
 242       break;
 243   }
 244
 245   return name;
 246 }
 247
 248 // Returns the value of the pref for the relevant feature in aValue.
 249 // If the pref doesn't exist, aValue is not touched, and returns false.
 250 static bool GetPrefValueForFeature(int32_t aFeature, int32_t& aValue,
 251                                    nsACString& aFailureId) {
 252   const char* prefname = GetPrefNameForFeature(aFeature);
 253   if (!prefname) return false;
 254
 255   aValue = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 256   if (!NS_SUCCEEDED(Preferences::GetInt(prefname, &aValue))) {
 257     return false;
 258   }
 259
 260   nsCString failureprefname(prefname);
 261   failureprefname += ".failureid";
 262   nsAutoCString failureValue;
 263   nsresult rv = Preferences::GetCString(failureprefname.get(), failureValue);
 264   if (NS_SUCCEEDED(rv)) {
 265     aFailureId = failureValue.get();
 266   } else {
 267     aFailureId = "FEATURE_FAILURE_BLOCKLIST_PREF";
 268   }
 269
 270   return true;
 271 }
 272
 273 static void SetPrefValueForFeature(int32_t aFeature, int32_t aValue,
 274                                    const nsACString& aFailureId) {
 275   const char* prefname = GetPrefNameForFeature(aFeature);
 276   if (!prefname) return;
 277   if (XRE_IsParentProcess()) {
 278     GfxInfoBase::sFeatureStatus = nullptr;
 279   }
 280
 281   Preferences::SetInt(prefname, aValue);
 282   if (!aFailureId.IsEmpty()) {
 283     nsCString failureprefname(prefname);
 284     failureprefname += ".failureid";
 285     Preferences::SetCString(failureprefname.get(), aFailureId);
 286   }
 287 }
 288
 289 static void RemovePrefForFeature(int32_t aFeature) {
 290   const char* prefname = GetPrefNameForFeature(aFeature);
 291   if (!prefname) return;
 292
 293   if (XRE_IsParentProcess()) {
 294     GfxInfoBase::sFeatureStatus = nullptr;
 295   }
 296   Preferences::ClearUser(prefname);
 297 }
 298
 299 static bool GetPrefValueForDriverVersion(nsCString& aVersion) {
 300   return NS_SUCCEEDED(
 301       Preferences::GetCString(SUGGESTED_VERSION_PREF, aVersion));
 302 }
 303
 304 static void SetPrefValueForDriverVersion(const nsAString& aVersion) {
 305   Preferences::SetString(SUGGESTED_VERSION_PREF, aVersion);
 306 }
 307
 308 static void RemovePrefForDriverVersion() {
 309   Preferences::ClearUser(SUGGESTED_VERSION_PREF);
 310 }
 311
 312 static OperatingSystem BlocklistOSToOperatingSystem(const nsAString& os) {
 313   if (os.EqualsLiteral("WINNT 6.1")) {
 314     return OperatingSystem::Windows7;
 315   } else if (os.EqualsLiteral("WINNT 6.2")) {
 316     return OperatingSystem::Windows8;
 317   } else if (os.EqualsLiteral("WINNT 6.3")) {
 318     return OperatingSystem::Windows8_1;
 319   } else if (os.EqualsLiteral("WINNT 10.0")) {
 320     return OperatingSystem::Windows10;
 321   } else if (os.EqualsLiteral("Linux")) {
 322     return OperatingSystem::Linux;
 323   } else if (os.EqualsLiteral("Darwin 9")) {
 324     return OperatingSystem::OSX10_5;
 325   } else if (os.EqualsLiteral("Darwin 10")) {
 326     return OperatingSystem::OSX10_6;
 327   } else if (os.EqualsLiteral("Darwin 11")) {
 328     return OperatingSystem::OSX10_7;
 329   } else if (os.EqualsLiteral("Darwin 12")) {
 330     return OperatingSystem::OSX10_8;
 331   } else if (os.EqualsLiteral("Darwin 13")) {
 332     return OperatingSystem::OSX10_9;
 333   } else if (os.EqualsLiteral("Darwin 14")) {
 334     return OperatingSystem::OSX10_10;
 335   } else if (os.EqualsLiteral("Darwin 15")) {
 336     return OperatingSystem::OSX10_11;
 337   } else if (os.EqualsLiteral("Darwin 16")) {
 338     return OperatingSystem::OSX10_12;
 339   } else if (os.EqualsLiteral("Darwin 17")) {
 340     return OperatingSystem::OSX10_13;
 341   } else if (os.EqualsLiteral("Darwin 18")) {
 342     return OperatingSystem::OSX10_14;
 343   } else if (os.EqualsLiteral("Darwin 19")) {
 344     return OperatingSystem::OSX10_15;
 345   } else if (os.EqualsLiteral("Darwin 20")) {
 346     return OperatingSystem::OSX11_0;
 347   } else if (os.EqualsLiteral("Android")) {
 348     return OperatingSystem::Android;
 349     // For historical reasons, "All" in blocklist means "All Windows"
 350   } else if (os.EqualsLiteral("All")) {
 351     return OperatingSystem::Windows;
 352   } else if (os.EqualsLiteral("Darwin")) {
 353     return OperatingSystem::OSX;
 354   }
 355
 356   return OperatingSystem::Unknown;
 357 }
 358
 359 static GfxDeviceFamily* BlocklistDevicesToDeviceFamily(
 360     nsTArray<nsCString>& devices) {
 361   if (devices.Length() == 0) return nullptr;
 362
 363   // For each device, get its device ID, and return a freshly-allocated
 364   // GfxDeviceFamily with the contents of that array.
 365   GfxDeviceFamily* deviceIds = new GfxDeviceFamily;
 366
 367   for (uint32_t i = 0; i < devices.Length(); ++i) {
 368     // We make sure we don't add any "empty" device entries to the array, so
 369     // we don't need to check if devices[i] is empty.
 370     deviceIds->Append(NS_ConvertUTF8toUTF16(devices[i]));
 371   }
 372
 373   return deviceIds;
 374 }
 375
 376 static int32_t BlocklistFeatureToGfxFeature(const nsAString& aFeature) {
 377   MOZ_ASSERT(!aFeature.IsEmpty());
 378   if (aFeature.EqualsLiteral("DIRECT2D"))
 379     return nsIGfxInfo::FEATURE_DIRECT2D;
 380   else if (aFeature.EqualsLiteral("DIRECT3D_9_LAYERS"))
 381     return nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS;
 382   else if (aFeature.EqualsLiteral("DIRECT3D_10_LAYERS"))
 383     return nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS;
 384   else if (aFeature.EqualsLiteral("DIRECT3D_10_1_LAYERS"))
 385     return nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS;
 386   else if (aFeature.EqualsLiteral("DIRECT3D_11_LAYERS"))
 387     return nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS;
 388   else if (aFeature.EqualsLiteral("DIRECT3D_11_ANGLE"))
 389     return nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE;
 390   else if (aFeature.EqualsLiteral("HARDWARE_VIDEO_DECODING"))
 391     return nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING;
 392   else if (aFeature.EqualsLiteral("OPENGL_LAYERS"))
 393     return nsIGfxInfo::FEATURE_OPENGL_LAYERS;
 394   else if (aFeature.EqualsLiteral("WEBGL_OPENGL"))
 395     return nsIGfxInfo::FEATURE_WEBGL_OPENGL;
 396   else if (aFeature.EqualsLiteral("WEBGL_ANGLE"))
 397     return nsIGfxInfo::FEATURE_WEBGL_ANGLE;
 398   else if (aFeature.EqualsLiteral("WEBGL_MSAA"))
 399     return nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA;
 400   else if (aFeature.EqualsLiteral("STAGEFRIGHT"))
 401     return nsIGfxInfo::FEATURE_STAGEFRIGHT;
 402   else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_ENCODE"))
 403     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE;
 404   else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_DECODE"))
 405     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE;
 406   else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_H264"))
 407     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264;
 408   else if (aFeature.EqualsLiteral("CANVAS2D_ACCELERATION"))
 409     return nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION;
 410   else if (aFeature.EqualsLiteral("DX_INTEROP2"))
 411     return nsIGfxInfo::FEATURE_DX_INTEROP2;
 412   else if (aFeature.EqualsLiteral("GPU_PROCESS"))
 413     return nsIGfxInfo::FEATURE_GPU_PROCESS;
 414   else if (aFeature.EqualsLiteral("WEBGL2"))
 415     return nsIGfxInfo::FEATURE_WEBGL2;
 416   else if (aFeature.EqualsLiteral("D3D11_KEYED_MUTEX"))
 417     return nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX;
 418   else if (aFeature.EqualsLiteral("WEBRENDER"))
 419     return nsIGfxInfo::FEATURE_WEBRENDER;
 420   else if (aFeature.EqualsLiteral("WEBRENDER_COMPOSITOR"))
 421     return nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR;
 422   else if (aFeature.EqualsLiteral("DX_NV12"))
 423     return nsIGfxInfo::FEATURE_DX_NV12;
 424   // We do not support FEATURE_VP8_HW_DECODE and FEATURE_VP9_HW_DECODE
 425   // in downloadable blocklist.
 426   else if (aFeature.EqualsLiteral("GL_SWIZZLE"))
 427     return nsIGfxInfo::FEATURE_GL_SWIZZLE;
 428   else if (aFeature.EqualsLiteral("WEBRENDER_SCISSORED_CACHE_CLEARS"))
 429     return nsIGfxInfo::FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS;
 430   else if (aFeature.EqualsLiteral("ALLOW_WEBGL_OUT_OF_PROCESS"))
 431     return nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS;
 432   else if (aFeature.EqualsLiteral("THREADSAFE_GL"))
 433     return nsIGfxInfo::FEATURE_THREADSAFE_GL;
 434   else if (aFeature.EqualsLiteral("WEBRENDER_SOFTWARE"))
 435     return nsIGfxInfo::FEATURE_WEBRENDER_SOFTWARE;
 436   else if (aFeature.EqualsLiteral("X11_EGL"))
 437     return nsIGfxInfo::FEATURE_X11_EGL;
 438   else if (aFeature.EqualsLiteral("DMABUF"))
 439     return nsIGfxInfo::FEATURE_DMABUF;
 440
 441   // If we don't recognize the feature, it may be new, and something
 442   // this version doesn't understand.  So, nothing to do.  This is
 443   // different from feature not being specified at all, in which case
 444   // this method should not get called and we should continue with the
 445   // "all features" blocklisting.
 446   return -1;
 447 }
 448
 449 static int32_t BlocklistFeatureStatusToGfxFeatureStatus(
 450     const nsAString& aStatus) {
 451   if (aStatus.EqualsLiteral("STATUS_OK"))
 452     return nsIGfxInfo::FEATURE_STATUS_OK;
 453   else if (aStatus.EqualsLiteral("BLOCKED_DRIVER_VERSION"))
 454     return nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION;
 455   else if (aStatus.EqualsLiteral("BLOCKED_DEVICE"))
 456     return nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
 457   else if (aStatus.EqualsLiteral("DISCOURAGED"))
 458     return nsIGfxInfo::FEATURE_DISCOURAGED;
 459   else if (aStatus.EqualsLiteral("BLOCKED_OS_VERSION"))
 460     return nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION;
 461   else if (aStatus.EqualsLiteral("DENIED"))
 462     return nsIGfxInfo::FEATURE_DENIED;
 463   else if (aStatus.EqualsLiteral("ALLOW_QUALIFIED"))
 464     return nsIGfxInfo::FEATURE_ALLOW_QUALIFIED;
 465   else if (aStatus.EqualsLiteral("ALLOW_ALWAYS"))
 466     return nsIGfxInfo::FEATURE_ALLOW_ALWAYS;
 467
 468   // Do not allow it to set STATUS_UNKNOWN.  Also, we are not
 469   // expecting the "mismatch" status showing up here.
 470
 471   return nsIGfxInfo::FEATURE_STATUS_OK;
 472 }
 473
 474 static VersionComparisonOp BlocklistComparatorToComparisonOp(
 475     const nsAString& op) {
 476   if (op.EqualsLiteral("LESS_THAN"))
 477     return DRIVER_LESS_THAN;
 478   else if (op.EqualsLiteral("BUILD_ID_LESS_THAN"))
 479     return DRIVER_BUILD_ID_LESS_THAN;
 480   else if (op.EqualsLiteral("LESS_THAN_OR_EQUAL"))
 481     return DRIVER_LESS_THAN_OR_EQUAL;
 482   else if (op.EqualsLiteral("BUILD_ID_LESS_THAN_OR_EQUAL"))
 483     return DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL;
 484   else if (op.EqualsLiteral("GREATER_THAN"))
 485     return DRIVER_GREATER_THAN;
 486   else if (op.EqualsLiteral("GREATER_THAN_OR_EQUAL"))
 487     return DRIVER_GREATER_THAN_OR_EQUAL;
 488   else if (op.EqualsLiteral("EQUAL"))
 489     return DRIVER_EQUAL;
 490   else if (op.EqualsLiteral("NOT_EQUAL"))
 491     return DRIVER_NOT_EQUAL;
 492   else if (op.EqualsLiteral("BETWEEN_EXCLUSIVE"))
 493     return DRIVER_BETWEEN_EXCLUSIVE;
 494   else if (op.EqualsLiteral("BETWEEN_INCLUSIVE"))
 495     return DRIVER_BETWEEN_INCLUSIVE;
 496   else if (op.EqualsLiteral("BETWEEN_INCLUSIVE_START"))
 497     return DRIVER_BETWEEN_INCLUSIVE_START;
 498
 499   return DRIVER_COMPARISON_IGNORED;
 500 }
 501
 502 /*
 503   Deserialize Blocklist entries from string.
 504   e.g:
 505   os:WINNT 6.0\tvendor:0x8086\tdevices:0x2582,0x2782\tfeature:DIRECT3D_10_LAYERS\tfeatureStatus:BLOCKED_DRIVER_VERSION\tdriverVersion:8.52.322.2202\tdriverVersionComparator:LESS_THAN_OR_EQUAL
 506 */
 507 static bool BlocklistEntryToDriverInfo(const nsACString& aBlocklistEntry,
 508                                        GfxDriverInfo& aDriverInfo) {
 509   // If we get an application version to be zero, something is not working
 510   // and we are not going to bother checking the blocklist versions.
 511   // See TestGfxWidgets.cpp for how version comparison works.
 512   // <versionRange minVersion="42.0a1" maxVersion="45.0"></versionRange>
 513   static mozilla::Version zeroV("0");
 514   static mozilla::Version appV(GfxInfoBase::GetApplicationVersion().get());
 515   if (appV <= zeroV) {
 516     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 517         << "Invalid application version "
 518         << GfxInfoBase::GetApplicationVersion().get();
 519   }
 520
 521   aDriverInfo.mRuleId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID"_ns;
 522
 523   for (const auto& keyValue : aBlocklistEntry.Split('\t')) {
 524     nsTArray<nsCString> splitted;
 525     ParseString(keyValue, ':', splitted);
 526     if (splitted.Length() != 2) {
 527       // If we don't recognize the input data, we do not want to proceed.
 528       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 529           << "Unrecognized data " << nsCString(keyValue).get();
 530       return false;
 531     }
 532     const nsCString& key = splitted[0];
 533     const nsCString& value = splitted[1];
 534     NS_ConvertUTF8toUTF16 dataValue(value);
 535
 536     if (value.Length() == 0) {
 537       // Safety check for empty values.
 538       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 539           << "Empty value for " << key.get();
 540       return false;
 541     }
 542
 543     if (key.EqualsLiteral("blockID")) {
 544       nsCString blockIdStr = "FEATURE_FAILURE_DL_BLOCKLIST_"_ns + value;
 545       aDriverInfo.mRuleId = blockIdStr.get();
 546     } else if (key.EqualsLiteral("os")) {
 547       aDriverInfo.mOperatingSystem = BlocklistOSToOperatingSystem(dataValue);
 548     } else if (key.EqualsLiteral("osversion")) {
 549       aDriverInfo.mOperatingSystemVersion = strtoul(value.get(), nullptr, 10);
 550     } else if (key.EqualsLiteral("desktopEnvironment")) {
 551       aDriverInfo.mDesktopEnvironment = dataValue;
 552     } else if (key.EqualsLiteral("windowProtocol")) {
 553       aDriverInfo.mWindowProtocol = dataValue;
 554     } else if (key.EqualsLiteral("vendor")) {
 555       aDriverInfo.mAdapterVendor = dataValue;
 556     } else if (key.EqualsLiteral("driverVendor")) {
 557       aDriverInfo.mDriverVendor = dataValue;
 558     } else if (key.EqualsLiteral("feature")) {
 559       aDriverInfo.mFeature = BlocklistFeatureToGfxFeature(dataValue);
 560       if (aDriverInfo.mFeature < 0) {
 561         // If we don't recognize the feature, we do not want to proceed.
 562         gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 563             << "Unrecognized feature " << value.get();
 564         return false;
 565       }
 566     } else if (key.EqualsLiteral("featureStatus")) {
 567       aDriverInfo.mFeatureStatus =
 568           BlocklistFeatureStatusToGfxFeatureStatus(dataValue);
 569     } else if (key.EqualsLiteral("driverVersion")) {
 570       uint64_t version;
 571       if (ParseDriverVersion(dataValue, &version))
 572         aDriverInfo.mDriverVersion = version;
 573     } else if (key.EqualsLiteral("driverVersionMax")) {
 574       uint64_t version;
 575       if (ParseDriverVersion(dataValue, &version))
 576         aDriverInfo.mDriverVersionMax = version;
 577     } else if (key.EqualsLiteral("driverVersionComparator")) {
 578       aDriverInfo.mComparisonOp = BlocklistComparatorToComparisonOp(dataValue);
 579     } else if (key.EqualsLiteral("model")) {
 580       aDriverInfo.mModel = dataValue;
 581     } else if (key.EqualsLiteral("product")) {
 582       aDriverInfo.mProduct = dataValue;
 583     } else if (key.EqualsLiteral("manufacturer")) {
 584       aDriverInfo.mManufacturer = dataValue;
 585     } else if (key.EqualsLiteral("hardware")) {
 586       aDriverInfo.mHardware = dataValue;
 587     } else if (key.EqualsLiteral("versionRange")) {
 588       nsTArray<nsCString> versionRange;
 589       ParseString(value, ',', versionRange);
 590       if (versionRange.Length() != 2) {
 591         gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 592             << "Unrecognized versionRange " << value.get();
 593         return false;
 594       }
 595       const nsCString& minValue = versionRange[0];
 596       const nsCString& maxValue = versionRange[1];
 597
 598       mozilla::Version minV(minValue.get());
 599       mozilla::Version maxV(maxValue.get());
 600
 601       if (minV > zeroV && !(appV >= minV)) {
 602         // The version of the application is less than the minimal version
 603         // this blocklist entry applies to, so we can just ignore it by
 604         // returning false and letting the caller deal with it.
 605         return false;
 606       }
 607       if (maxV > zeroV && !(appV <= maxV)) {
 608         // The version of the application is more than the maximal version
 609         // this blocklist entry applies to, so we can just ignore it by
 610         // returning false and letting the caller deal with it.
 611         return false;
 612       }
 613     } else if (key.EqualsLiteral("devices")) {
 614       nsTArray<nsCString> devices;
 615       ParseString(value, ',', devices);
 616       GfxDeviceFamily* deviceIds = BlocklistDevicesToDeviceFamily(devices);
 617       if (deviceIds) {
 618         // Get GfxDriverInfo to adopt the devices array we created.
 619         aDriverInfo.mDeleteDevices = true;
 620         aDriverInfo.mDevices = deviceIds;
 621       }
 622     }
 623     // We explicitly ignore unknown elements.
 624   }
 625
 626   return true;
 627 }
 628
 629 NS_IMETHODIMP
 630 GfxInfoBase::Observe(nsISupports* aSubject, const char* aTopic,
 631                      const char16_t* aData) {
 632   if (strcmp(aTopic, "blocklist-data-gfxItems") == 0) {
 633     nsTArray<GfxDriverInfo> driverInfo;
 634     NS_ConvertUTF16toUTF8 utf8Data(aData);
 635
 636     for (const auto& blocklistEntry : utf8Data.Split('\n')) {
 637       GfxDriverInfo di;
 638       if (BlocklistEntryToDriverInfo(blocklistEntry, di)) {
 639         // XXX Changing this to driverInfo.AppendElement(di) causes leaks.
 640         // Probably some non-standard semantics of the copy/move operations?
 641         *driverInfo.AppendElement() = di;
 642         // Prevent di falling out of scope from destroying the devices.
 643         di.mDeleteDevices = false;
 644       } else {
 645         driverInfo.AppendElement();
 646       }
 647     }
 648
 649     EvaluateDownloadedBlocklist(driverInfo);
 650   }
 651
 652   return NS_OK;
 653 }
 654
 655 GfxInfoBase::GfxInfoBase() : mScreenPixels(INT64_MAX), mMutex("GfxInfoBase") {}
 656
 657 GfxInfoBase::~GfxInfoBase() = default;
 658
 659 nsresult GfxInfoBase::Init() {
 660   InitGfxDriverInfoShutdownObserver();
 661
 662   nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
 663   if (os) {
 664     os->AddObserver(this, "blocklist-data-gfxItems", true);
 665   }
 666
 667   return NS_OK;
 668 }
 669
 670 void GfxInfoBase::GetData() {
 671   if (mScreenPixels != INT64_MAX) {
 672     // Already initialized.
 673     return;
 674   }
 675
 676   nsCOMPtr<nsIScreenManager> manager =
 677       do_GetService("@mozilla.org/gfx/screenmanager;1");
 678   if (!manager) {
 679     MOZ_ASSERT_UNREACHABLE("failed to get nsIScreenManager");
 680     return;
 681   }
 682
 683   manager->GetTotalScreenPixels(&mScreenPixels);
 684 }
 685
 686 NS_IMETHODIMP
 687 GfxInfoBase::GetFeatureStatus(int32_t aFeature, nsACString& aFailureId,
 688                               int32_t* aStatus) {
 689   // Ignore the gfx.blocklist.all pref on release and beta.
 690 #if defined(RELEASE_OR_BETA)
 691   int32_t blocklistAll = 0;
 692 #else
 693   int32_t blocklistAll = StaticPrefs::gfx_blocklist_all_AtStartup();
 694 #endif
 695   if (blocklistAll > 0) {
 696     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 697         << "Forcing blocklisting all features";
 698     *aStatus = FEATURE_BLOCKED_DEVICE;
 699     aFailureId = "FEATURE_FAILURE_BLOCK_ALL";
 700     return NS_OK;
 701   } else if (blocklistAll < 0) {
 702     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 703         << "Ignoring any feature blocklisting.";
 704     *aStatus = FEATURE_STATUS_OK;
 705     return NS_OK;
 706   }
 707
 708   if (GetPrefValueForFeature(aFeature, *aStatus, aFailureId)) {
 709     return NS_OK;
 710   }
 711
 712   if (XRE_IsContentProcess() || XRE_IsGPUProcess()) {
 713     // Use the cached data received from the parent process.
 714     MOZ_ASSERT(sFeatureStatus);
 715     bool success = false;
 716     for (const auto& fs : *sFeatureStatus) {
 717       if (fs.feature() == aFeature) {
 718         aFailureId = fs.failureId();
 719         *aStatus = fs.status();
 720         success = true;
 721         break;
 722       }
 723     }
 724     return success ? NS_OK : NS_ERROR_FAILURE;
 725   }
 726
 727   nsString version;
 728   nsTArray<GfxDriverInfo> driverInfo;
 729   nsresult rv =
 730       GetFeatureStatusImpl(aFeature, aStatus, version, driverInfo, aFailureId);
 731   return rv;
 732 }
 733
 734 nsTArray<gfx::GfxInfoFeatureStatus> GfxInfoBase::GetAllFeatures() {
 735   MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
 736   if (!sFeatureStatus) {
 737     InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>());
 738     for (int32_t i = 1; i <= nsIGfxInfo::FEATURE_MAX_VALUE; ++i) {
 739       int32_t status = 0;
 740       nsAutoCString failureId;
 741       GetFeatureStatus(i, failureId, &status);
 742       gfx::GfxInfoFeatureStatus gfxFeatureStatus;
 743       gfxFeatureStatus.feature() = i;
 744       gfxFeatureStatus.status() = status;
 745       gfxFeatureStatus.failureId() = failureId;
 746       sFeatureStatus->AppendElement(gfxFeatureStatus);
 747     }
 748   }
 749
 750   nsTArray<gfx::GfxInfoFeatureStatus> features;
 751   for (const auto& status : *sFeatureStatus) {
 752     gfx::GfxInfoFeatureStatus copy = status;
 753     features.AppendElement(copy);
 754   }
 755   return features;
 756 }
 757
 758 inline bool MatchingAllowStatus(int32_t aStatus) {
 759   switch (aStatus) {
 760     case nsIGfxInfo::FEATURE_ALLOW_ALWAYS:
 761     case nsIGfxInfo::FEATURE_ALLOW_QUALIFIED:
 762       return true;
 763     default:
 764       return false;
 765   }
 766 }
 767
 768 // Matching OS go somewhat beyond the simple equality check because of the
 769 // "All Windows" and "All OS X" variations.
 770 //
 771 // aBlockedOS is describing the system(s) we are trying to block.
 772 // aSystemOS is describing the system we are running on.
 773 //
 774 // aSystemOS should not be "Windows" or "OSX" - it should be set to
 775 // a particular version instead.
 776 // However, it is valid for aBlockedOS to be one of those generic values,
 777 // as we could be blocking all of the versions.
 778 inline bool MatchingOperatingSystems(OperatingSystem aBlockedOS,
 779                                      OperatingSystem aSystemOS,
 780                                      uint32_t aSystemOSBuild) {
 781   MOZ_ASSERT(aSystemOS != OperatingSystem::Windows &&
 782              aSystemOS != OperatingSystem::OSX);
 783
 784   // If the block entry OS is unknown, it doesn't match
 785   if (aBlockedOS == OperatingSystem::Unknown) {
 786     return false;
 787   }
 788
 789 #if defined(XP_WIN)
 790   if (aBlockedOS == OperatingSystem::Windows) {
 791     // We do want even "unknown" aSystemOS to fall under "all windows"
 792     return true;
 793   }
 794
 795   constexpr uint32_t kMinWin10BuildNumber = 18362;
 796   if (aBlockedOS == OperatingSystem::RecentWindows10 &&
 797       aSystemOS == OperatingSystem::Windows10) {
 798     // For allowlist purposes, we sometimes want to restrict to only recent
 799     // versions of Windows 10. This is a bit of a kludge but easier than adding
 800     // complicated blocklist infrastructure for build ID comparisons like driver
 801     // versions.
 802     return aSystemOSBuild >= kMinWin10BuildNumber;
 803   }
 804
 805   if (aBlockedOS == OperatingSystem::NotRecentWindows10) {
 806     if (aSystemOS == OperatingSystem::Windows10) {
 807       return aSystemOSBuild < kMinWin10BuildNumber;
 808     } else {
 809       return true;
 810     }
 811   }
 812 #endif
 813
 814 #if defined(XP_MACOSX)
 815   if (aBlockedOS == OperatingSystem::OSX) {
 816     // We do want even "unknown" aSystemOS to fall under "all OS X"
 817     return true;
 818   }
 819 #endif
 820
 821   return aSystemOS == aBlockedOS;
 822 }
 823
 824 inline bool MatchingBattery(BatteryStatus aBatteryStatus, bool aHasBattery) {
 825   switch (aBatteryStatus) {
 826     case BatteryStatus::All:
 827       return true;
 828     case BatteryStatus::None:
 829       return !aHasBattery;
 830     case BatteryStatus::Present:
 831       return aHasBattery;
 832   }
 833
 834   MOZ_ASSERT_UNREACHABLE("bad battery status");
 835   return false;
 836 }
 837
 838 inline bool MatchingScreenSize(ScreenSizeStatus aScreenStatus,
 839                                int64_t aScreenPixels) {
 840   constexpr int64_t kMaxSmallPixels = 2304000;   // 1920x1200
 841   constexpr int64_t kMaxMediumPixels = 4953600;  // 3440x1440
 842
 843   switch (aScreenStatus) {
 844     case ScreenSizeStatus::All:
 845       return true;
 846     case ScreenSizeStatus::Small:
 847       return aScreenPixels <= kMaxSmallPixels;
 848     case ScreenSizeStatus::SmallAndMedium:
 849       return aScreenPixels <= kMaxMediumPixels;
 850     case ScreenSizeStatus::Medium:
 851       return aScreenPixels > kMaxSmallPixels &&
 852              aScreenPixels <= kMaxMediumPixels;
 853     case ScreenSizeStatus::MediumAndLarge:
 854       return aScreenPixels > kMaxSmallPixels;
 855     case ScreenSizeStatus::Large:
 856       return aScreenPixels > kMaxMediumPixels;
 857   }
 858
 859   MOZ_ASSERT_UNREACHABLE("bad screen status");
 860   return false;
 861 }
 862
 863 int32_t GfxInfoBase::FindBlocklistedDeviceInList(
 864     const nsTArray<GfxDriverInfo>& info, nsAString& aSuggestedVersion,
 865     int32_t aFeature, nsACString& aFailureId, OperatingSystem os,
 866     bool aForAllowing) {
 867   int32_t status = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 868
 869   // Some properties are not available on all platforms.
 870   nsAutoString desktopEnvironment;
 871   nsresult rv = GetDesktopEnvironment(desktopEnvironment);
 872   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 873     return 0;
 874   }
 875
 876   nsAutoString windowProtocol;
 877   rv = GetWindowProtocol(windowProtocol);
 878   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 879     return 0;
 880   }
 881
 882   bool hasBattery = false;
 883   rv = GetHasBattery(&hasBattery);
 884   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 885     return 0;
 886   }
 887
 888   uint32_t osBuild = OperatingSystemBuild();
 889
 890   // Get the adapters once then reuse below
 891   nsAutoString adapterVendorID[2];
 892   nsAutoString adapterDeviceID[2];
 893   nsAutoString adapterDriverVendor[2];
 894   nsAutoString adapterDriverVersionString[2];
 895   bool adapterInfoFailed[2];
 896
 897   adapterInfoFailed[0] =
 898       (NS_FAILED(GetAdapterVendorID(adapterVendorID[0])) ||
 899        NS_FAILED(GetAdapterDeviceID(adapterDeviceID[0])) ||
 900        NS_FAILED(GetAdapterDriverVendor(adapterDriverVendor[0])) ||
 901        NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString[0])));
 902   adapterInfoFailed[1] =
 903       (NS_FAILED(GetAdapterVendorID2(adapterVendorID[1])) ||
 904        NS_FAILED(GetAdapterDeviceID2(adapterDeviceID[1])) ||
 905        NS_FAILED(GetAdapterDriverVendor2(adapterDriverVendor[1])) ||
 906        NS_FAILED(GetAdapterDriverVersion2(adapterDriverVersionString[1])));
 907   // No point in going on if we don't have adapter info
 908   if (adapterInfoFailed[0] && adapterInfoFailed[1]) {
 909     return 0;
 910   }
 911
 912 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
 913   uint64_t driverVersion[2] = {0, 0};
 914   if (!adapterInfoFailed[0]) {
 915     ParseDriverVersion(adapterDriverVersionString[0], &driverVersion[0]);
 916   }
 917   if (!adapterInfoFailed[1]) {
 918     ParseDriverVersion(adapterDriverVersionString[1], &driverVersion[1]);
 919   }
 920 #endif
 921
 922   uint32_t i = 0;
 923   for (; i < info.Length(); i++) {
 924     // If the status is FEATURE_ALLOW_*, then it is for the allowlist, not
 925     // blocklisting. Only consider entries for our search mode.
 926     if (MatchingAllowStatus(info[i].mFeatureStatus) != aForAllowing) {
 927       continue;
 928     }
 929
 930     // If we don't have the info for this GPU, no need to check further.
 931     // It is unclear that we would ever have a mixture of 1st and 2nd
 932     // GPU, but leaving the code in for that possibility for now.
 933     // (Actually, currently mGpu2 will never be true, so this can
 934     // be optimized out.)
 935     uint32_t infoIndex = info[i].mGpu2 ? 1 : 0;
 936     if (adapterInfoFailed[infoIndex]) {
 937       continue;
 938     }
 939
 940     // Do the operating system check first, no point in getting the driver
 941     // info if we won't need to use it.
 942     if (!MatchingOperatingSystems(info[i].mOperatingSystem, os, osBuild)) {
 943       continue;
 944     }
 945
 946     if (info[i].mOperatingSystemVersion &&
 947         info[i].mOperatingSystemVersion != OperatingSystemVersion()) {
 948       continue;
 949     }
 950
 951     if (!MatchingBattery(info[i].mBattery, hasBattery)) {
 952       continue;
 953     }
 954
 955     if (!MatchingScreenSize(info[i].mScreen, mScreenPixels)) {
 956       continue;
 957     }
 958
 959     if (!DoesDesktopEnvironmentMatch(info[i].mDesktopEnvironment,
 960                                      desktopEnvironment)) {
 961       continue;
 962     }
 963
 964     if (!DoesWindowProtocolMatch(info[i].mWindowProtocol, windowProtocol)) {
 965       continue;
 966     }
 967
 968     if (!DoesVendorMatch(info[i].mAdapterVendor, adapterVendorID[infoIndex])) {
 969       continue;
 970     }
 971
 972     if (!DoesDriverVendorMatch(info[i].mDriverVendor,
 973                                adapterDriverVendor[infoIndex])) {
 974       continue;
 975     }
 976
 977     if (info[i].mDevices && !info[i].mDevices->IsEmpty()) {
 978       nsresult rv = info[i].mDevices->Contains(adapterDeviceID[infoIndex]);
 979       if (rv == NS_ERROR_NOT_AVAILABLE) {
 980         // Not found
 981         continue;
 982       }
 983       if (rv != NS_OK) {
 984         // Failed to search, allowlist should not match, blocklist should match
 985         // for safety reasons
 986         if (aForAllowing) {
 987           continue;
 988         }
 989         break;
 990       }
 991     }
 992
 993     bool match = false;
 994
 995     if (!info[i].mHardware.IsEmpty() && !info[i].mHardware.Equals(Hardware())) {
 996       continue;
 997     }
 998     if (!info[i].mModel.IsEmpty() && !info[i].mModel.Equals(Model())) {
 999       continue;
1000     }
1001     if (!info[i].mProduct.IsEmpty() && !info[i].mProduct.Equals(Product())) {
1002       continue;
1003     }
1004     if (!info[i].mManufacturer.IsEmpty() &&
1005         !info[i].mManufacturer.Equals(Manufacturer())) {
1006       continue;
1007     }
1008
1009 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
1010     switch (info[i].mComparisonOp) {
1011       case DRIVER_LESS_THAN:
1012         match = driverVersion[infoIndex] < info[i].mDriverVersion;
1013         break;
1014       case DRIVER_BUILD_ID_LESS_THAN:
1015         match = (driverVersion[infoIndex] & 0xFFFF) < info[i].mDriverVersion;
1016         break;
1017       case DRIVER_LESS_THAN_OR_EQUAL:
1018         match = driverVersion[infoIndex] <= info[i].mDriverVersion;
1019         break;
1020       case DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL:
1021         match = (driverVersion[infoIndex] & 0xFFFF) <= info[i].mDriverVersion;
1022         break;
1023       case DRIVER_GREATER_THAN:
1024         match = driverVersion[infoIndex] > info[i].mDriverVersion;
1025         break;
1026       case DRIVER_GREATER_THAN_OR_EQUAL:
1027         match = driverVersion[infoIndex] >= info[i].mDriverVersion;
1028         break;
1029       case DRIVER_EQUAL:
1030         match = driverVersion[infoIndex] == info[i].mDriverVersion;
1031         break;
1032       case DRIVER_NOT_EQUAL:
1033         match = driverVersion[infoIndex] != info[i].mDriverVersion;
1034         break;
1035       case DRIVER_BETWEEN_EXCLUSIVE:
1036         match = driverVersion[infoIndex] > info[i].mDriverVersion &&
1037                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1038         break;
1039       case DRIVER_BETWEEN_INCLUSIVE:
1040         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1041                 driverVersion[infoIndex] <= info[i].mDriverVersionMax;
1042         break;
1043       case DRIVER_BETWEEN_INCLUSIVE_START:
1044         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1045                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1046         break;
1047       case DRIVER_COMPARISON_IGNORED:
1048         // We don't have a comparison op, so we match everything.
1049         match = true;
1050         break;
1051       default:
1052         NS_WARNING("Bogus op in GfxDriverInfo");
1053         break;
1054     }
1055 #else
1056     // We don't care what driver version it was. We only check OS version and if
1057     // the device matches.
1058     match = true;
1059 #endif
1060
1061     if (match || info[i].mDriverVersion == GfxDriverInfo::allDriverVersions) {
1062       if ((info[i].mFeature == GfxDriverInfo::allFeatures &&
1063            aFeature != nsIGfxInfo::FEATURE_WEBRENDER_SOFTWARE) ||
1064           info[i].mFeature == aFeature) {
1065         status = info[i].mFeatureStatus;
1066         if (!info[i].mRuleId.IsEmpty()) {
1067           aFailureId = info[i].mRuleId.get();
1068         } else {
1069           aFailureId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID";
1070         }
1071         break;
1072       }
1073     }
1074   }
1075
1076 #if defined(XP_WIN)
1077   // As a very special case, we block D2D on machines with an NVidia 310M GPU
1078   // as either the primary or secondary adapter.  D2D is also blocked when the
1079   // NV 310M is the primary adapter (using the standard blocklisting mechanism).
1080   // If the primary GPU already matched something in the blocklist then we
1081   // ignore this special rule.  See bug 1008759.
1082   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN &&
1083       (aFeature == nsIGfxInfo::FEATURE_DIRECT2D)) {
1084     if (!adapterInfoFailed[1]) {
1085       nsAString& nvVendorID =
1086           (nsAString&)GfxDriverInfo::GetDeviceVendor(DeviceVendor::NVIDIA);
1087       const nsString nv310mDeviceId = u"0x0A70"_ns;
1088       if (nvVendorID.Equals(adapterVendorID[1],
1089                             nsCaseInsensitiveStringComparator) &&
1090           nv310mDeviceId.Equals(adapterDeviceID[1],
1091                                 nsCaseInsensitiveStringComparator)) {
1092         status = nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
1093         aFailureId = "FEATURE_FAILURE_D2D_NV310M_BLOCK";
1094       }
1095     }
1096   }
1097
1098   // Depends on Windows driver versioning. We don't pass a GfxDriverInfo object
1099   // back to the Windows handler, so we must handle this here.
1100   if (status == FEATURE_BLOCKED_DRIVER_VERSION) {
1101     if (info[i].mSuggestedVersion) {
1102       aSuggestedVersion.AppendPrintf("%s", info[i].mSuggestedVersion);
1103     } else if (info[i].mComparisonOp == DRIVER_LESS_THAN &&
1104                info[i].mDriverVersion != GfxDriverInfo::allDriverVersions) {
1105       aSuggestedVersion.AppendPrintf(
1106           "%lld.%lld.%lld.%lld",
1107           (info[i].mDriverVersion & 0xffff000000000000) >> 48,
1108           (info[i].mDriverVersion & 0x0000ffff00000000) >> 32,
1109           (info[i].mDriverVersion & 0x00000000ffff0000) >> 16,
1110           (info[i].mDriverVersion & 0x000000000000ffff));
1111     }
1112   }
1113 #endif
1114
1115   return status;
1116 }
1117
1118 void GfxInfoBase::SetFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>&& aFS) {
1119   MOZ_ASSERT(!sFeatureStatus);
1120   InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>(std::move(aFS)));
1121 }
1122
1123 bool GfxInfoBase::DoesDesktopEnvironmentMatch(
1124     const nsAString& aBlocklistDesktop, const nsAString& aDesktopEnv) {
1125   return aBlocklistDesktop.Equals(aDesktopEnv,
1126                                   nsCaseInsensitiveStringComparator) ||
1127          aBlocklistDesktop.Equals(
1128              GfxDriverInfo::GetDesktopEnvironment(DesktopEnvironment::All),
1129              nsCaseInsensitiveStringComparator);
1130 }
1131
1132 bool GfxInfoBase::DoesWindowProtocolMatch(
1133     const nsAString& aBlocklistWindowProtocol,
1134     const nsAString& aWindowProtocol) {
1135   return aBlocklistWindowProtocol.Equals(aWindowProtocol,
1136                                          nsCaseInsensitiveStringComparator) ||
1137          aBlocklistWindowProtocol.Equals(
1138              GfxDriverInfo::GetWindowProtocol(WindowProtocol::All),
1139              nsCaseInsensitiveStringComparator);
1140 }
1141
1142 bool GfxInfoBase::DoesVendorMatch(const nsAString& aBlocklistVendor,
1143                                   const nsAString& aAdapterVendor) {
1144   return aBlocklistVendor.Equals(aAdapterVendor,
1145                                  nsCaseInsensitiveStringComparator) ||
1146          aBlocklistVendor.Equals(
1147              GfxDriverInfo::GetDeviceVendor(DeviceVendor::All),
1148              nsCaseInsensitiveStringComparator);
1149 }
1150
1151 bool GfxInfoBase::DoesDriverVendorMatch(const nsAString& aBlocklistVendor,
1152                                         const nsAString& aDriverVendor) {
1153   return aBlocklistVendor.Equals(aDriverVendor,
1154                                  nsCaseInsensitiveStringComparator) ||
1155          aBlocklistVendor.Equals(
1156              GfxDriverInfo::GetDriverVendor(DriverVendor::All),
1157              nsCaseInsensitiveStringComparator);
1158 }
1159
1160 bool GfxInfoBase::IsFeatureAllowlisted(int32_t aFeature) const {
1161   return aFeature == nsIGfxInfo::FEATURE_WEBRENDER ||
1162          aFeature == nsIGfxInfo::FEATURE_WEBRENDER_SOFTWARE;
1163 }
1164
1165 nsresult GfxInfoBase::GetFeatureStatusImpl(
1166     int32_t aFeature, int32_t* aStatus, nsAString& aSuggestedVersion,
1167     const nsTArray<GfxDriverInfo>& aDriverInfo, nsACString& aFailureId,
1168     OperatingSystem* aOS /* = nullptr */) {
1169   if (aFeature <= 0) {
1170     gfxWarning() << "Invalid feature <= 0";
1171     return NS_OK;
1172   }
1173
1174   if (*aStatus != nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1175     // Terminate now with the status determined by the derived type (OS-specific
1176     // code).
1177     return NS_OK;
1178   }
1179
1180   if (sShutdownOccurred) {
1181     // This is futile; we've already commenced shutdown and our blocklists have
1182     // been deleted. We may want to look into resurrecting the blocklist instead
1183     // but for now, just don't even go there.
1184     return NS_OK;
1185   }
1186
1187   // Ensure any additional initialization required is complete.
1188   GetData();
1189
1190   // If an operating system was provided by the derived GetFeatureStatusImpl,
1191   // grab it here. Otherwise, the OS is unknown.
1192   OperatingSystem os = (aOS ? *aOS : OperatingSystem::Unknown);
1193
1194   nsAutoString adapterVendorID;
1195   nsAutoString adapterDeviceID;
1196   nsAutoString adapterDriverVersionString;
1197   if (NS_FAILED(GetAdapterVendorID(adapterVendorID)) ||
1198       NS_FAILED(GetAdapterDeviceID(adapterDeviceID)) ||
1199       NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString))) {
1200     aFailureId = "FEATURE_FAILURE_CANT_RESOLVE_ADAPTER";
1201     *aStatus = FEATURE_BLOCKED_DEVICE;
1202     return NS_OK;
1203   }
1204
1205   // Check if the device is blocked from the downloaded blocklist. If not, check
1206   // the static list after that. This order is used so that we can later escape
1207   // out of static blocks (i.e. if we were wrong or something was patched, we
1208   // can back out our static block without doing a release).
1209   int32_t status;
1210   if (aDriverInfo.Length()) {
1211     status =
1212         FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion, aFeature,
1213                                     aFailureId, os, /* aForAllowing */ false);
1214   } else {
1215     if (!sDriverInfo) {
1216       sDriverInfo = new nsTArray<GfxDriverInfo>();
1217     }
1218     status = FindBlocklistedDeviceInList(GetGfxDriverInfo(), aSuggestedVersion,
1219                                          aFeature, aFailureId, os,
1220                                          /* aForAllowing */ false);
1221   }
1222
1223   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1224     if (IsFeatureAllowlisted(aFeature)) {
1225       // This feature is actually using the allowlist; that means after we pass
1226       // the blocklist to prevent us explicitly from getting the feature, we now
1227       // need to check the allowlist to ensure we are allowed to get it in the
1228       // first place.
1229       if (aDriverInfo.Length()) {
1230         status = FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion,
1231                                              aFeature, aFailureId, os,
1232                                              /* aForAllowing */ true);
1233       } else {
1234         status = FindBlocklistedDeviceInList(
1235             GetGfxDriverInfo(), aSuggestedVersion, aFeature, aFailureId, os,
1236             /* aForAllowing */ true);
1237       }
1238
1239       if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1240         status = nsIGfxInfo::FEATURE_DENIED;
1241       }
1242     } else {
1243       // It's now done being processed. It's safe to set the status to
1244       // STATUS_OK.
1245       status = nsIGfxInfo::FEATURE_STATUS_OK;
1246     }
1247   }
1248
1249   *aStatus = status;
1250   return NS_OK;
1251 }
1252
1253 NS_IMETHODIMP
1254 GfxInfoBase::GetFeatureSuggestedDriverVersion(int32_t aFeature,
1255                                               nsAString& aVersion) {
1256   nsCString version;
1257   if (GetPrefValueForDriverVersion(version)) {
1258     aVersion = NS_ConvertASCIItoUTF16(version);
1259     return NS_OK;
1260   }
1261
1262   int32_t status;
1263   nsCString discardFailureId;
1264   nsTArray<GfxDriverInfo> driverInfo;
1265   return GetFeatureStatusImpl(aFeature, &status, aVersion, driverInfo,
1266                               discardFailureId);
1267 }
1268
1269 void GfxInfoBase::EvaluateDownloadedBlocklist(
1270     nsTArray<GfxDriverInfo>& aDriverInfo) {
1271   int32_t features[] = {nsIGfxInfo::FEATURE_DIRECT2D,
1272                         nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS,
1273                         nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS,
1274                         nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS,
1275                         nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS,
1276                         nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE,
1277                         nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING,
1278                         nsIGfxInfo::FEATURE_OPENGL_LAYERS,
1279                         nsIGfxInfo::FEATURE_WEBGL_OPENGL,
1280                         nsIGfxInfo::FEATURE_WEBGL_ANGLE,
1281                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE,
1282                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE,
1283                         nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA,
1284                         nsIGfxInfo::FEATURE_STAGEFRIGHT,
1285                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264,
1286                         nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION,
1287                         nsIGfxInfo::FEATURE_VP8_HW_DECODE,
1288                         nsIGfxInfo::FEATURE_VP9_HW_DECODE,
1289                         nsIGfxInfo::FEATURE_DX_INTEROP2,
1290                         nsIGfxInfo::FEATURE_GPU_PROCESS,
1291                         nsIGfxInfo::FEATURE_WEBGL2,
1292                         nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX,
1293                         nsIGfxInfo::FEATURE_WEBRENDER,
1294                         nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR,
1295                         nsIGfxInfo::FEATURE_WEBRENDER_SOFTWARE,
1296                         nsIGfxInfo::FEATURE_DX_NV12,
1297                         nsIGfxInfo::FEATURE_DX_P010,
1298                         nsIGfxInfo::FEATURE_DX_P016,
1299                         nsIGfxInfo::FEATURE_GL_SWIZZLE,
1300                         nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS,
1301                         nsIGfxInfo::FEATURE_X11_EGL,
1302                         nsIGfxInfo::FEATURE_DMABUF,
1303                         0};
1304
1305   // For every feature we know about, we evaluate whether this blocklist has a
1306   // non-STATUS_OK status. If it does, we set the pref we evaluate in
1307   // GetFeatureStatus above, so we don't need to hold on to this blocklist
1308   // anywhere permanent.
1309   int i = 0;
1310   while (features[i]) {
1311     int32_t status;
1312     nsCString failureId;
1313     nsAutoString suggestedVersion;
1314     if (NS_SUCCEEDED(GetFeatureStatusImpl(
1315             features[i], &status, suggestedVersion, aDriverInfo, failureId))) {
1316       switch (status) {
1317         default:
1318         case nsIGfxInfo::FEATURE_STATUS_OK:
1319           RemovePrefForFeature(features[i]);
1320           break;
1321
1322         case nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION:
1323           if (!suggestedVersion.IsEmpty()) {
1324             SetPrefValueForDriverVersion(suggestedVersion);
1325           } else {
1326             RemovePrefForDriverVersion();
1327           }
1328           [[fallthrough]];
1329
1330         case nsIGfxInfo::FEATURE_BLOCKED_MISMATCHED_VERSION:
1331         case nsIGfxInfo::FEATURE_BLOCKED_DEVICE:
1332         case nsIGfxInfo::FEATURE_DISCOURAGED:
1333         case nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION:
1334           SetPrefValueForFeature(features[i], status, failureId);
1335           break;
1336       }
1337     }
1338
1339     ++i;
1340   }
1341 }
1342
1343 NS_IMETHODIMP_(void)
1344 GfxInfoBase::LogFailure(const nsACString& failure) {
1345   // gfxCriticalError has a mutex lock of its own, so we may not actually
1346   // need this lock. ::GetFailures() accesses the data but the LogForwarder
1347   // will not return the copy of the logs unless it can get the same lock
1348   // that gfxCriticalError uses.  Still, that is so much of an implementation
1349   // detail that it's nicer to just add an extra lock here and in
1350   // ::GetFailures()
1351   MutexAutoLock lock(mMutex);
1352
1353   // By default, gfxCriticalError asserts; make it not assert in this case.
1354   gfxCriticalError(CriticalLog::DefaultOptions(false))
1355       << "(LF) " << failure.BeginReading();
1356 }
1357
1358 NS_IMETHODIMP GfxInfoBase::GetFailures(nsTArray<int32_t>& indices,
1359                                        nsTArray<nsCString>& failures) {
1360   MutexAutoLock lock(mMutex);
1361
1362   LogForwarder* logForwarder = Factory::GetLogForwarder();
1363   if (!logForwarder) {
1364     return NS_ERROR_UNEXPECTED;
1365   }
1366
1367   // There are two string copies in this method, starting with this one. We are
1368   // assuming this is not a big deal, as the size of the array should be small
1369   // and the strings in it should be small as well (the error messages in the
1370   // code.)  The second copy happens with the AppendElement() calls.
1371   // Technically, we don't need the mutex lock after the StringVectorCopy()
1372   // call.
1373   LoggingRecord loggedStrings = logForwarder->LoggingRecordCopy();
1374   LoggingRecord::const_iterator it;
1375   for (it = loggedStrings.begin(); it != loggedStrings.end(); ++it) {
1376     failures.AppendElement(
1377         nsDependentCSubstring(Get<1>(*it).c_str(), Get<1>(*it).size()));
1378     indices.AppendElement(Get<0>(*it));
1379   }
1380
1381   return NS_OK;
1382 }
1383
1384 nsTArray<GfxInfoCollectorBase*>* sCollectors;
1385
1386 static void InitCollectors() {
1387   if (!sCollectors) sCollectors = new nsTArray<GfxInfoCollectorBase*>;
1388 }
1389
1390 nsresult GfxInfoBase::GetInfo(JSContext* aCx,
1391                               JS::MutableHandle<JS::Value> aResult) {
1392   InitCollectors();
1393   InfoObject obj(aCx);
1394
1395   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1396     (*sCollectors)[i]->GetInfo(obj);
1397   }
1398
1399   // Some example property definitions
1400   // obj.DefineProperty("wordCacheSize", gfxTextRunWordCache::Count());
1401   // obj.DefineProperty("renderer", mRendererIDsString);
1402   // obj.DefineProperty("five", 5);
1403
1404   if (!obj.mOk) {
1405     return NS_ERROR_FAILURE;
1406   }
1407
1408   aResult.setObject(*obj.mObj);
1409   return NS_OK;
1410 }
1411
1412 nsAutoCString gBaseAppVersion;
1413
1414 const nsCString& GfxInfoBase::GetApplicationVersion() {
1415   static bool versionInitialized = false;
1416   if (!versionInitialized) {
1417     // If we fail to get the version, we will not try again.
1418     versionInitialized = true;
1419
1420     // Get the version from xpcom/system/nsIXULAppInfo.idl
1421     nsCOMPtr<nsIXULAppInfo> app = do_GetService("@mozilla.org/xre/app-info;1");
1422     if (app) {
1423       app->GetVersion(gBaseAppVersion);
1424     }
1425   }
1426   return gBaseAppVersion;
1427 }
1428
1429 void GfxInfoBase::AddCollector(GfxInfoCollectorBase* collector) {
1430   InitCollectors();
1431   sCollectors->AppendElement(collector);
1432 }
1433
1434 void GfxInfoBase::RemoveCollector(GfxInfoCollectorBase* collector) {
1435   InitCollectors();
1436   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1437     if ((*sCollectors)[i] == collector) {
1438       sCollectors->RemoveElementAt(i);
1439       break;
1440     }
1441   }
1442   if (sCollectors->IsEmpty()) {
1443     delete sCollectors;
1444     sCollectors = nullptr;
1445   }
1446 }
1447
1448 nsresult GfxInfoBase::FindMonitors(JSContext* aCx, JS::HandleObject aOutArray) {
1449   // If we have no platform specific implementation for detecting monitors, we
1450   // can just get the screen size from gfxPlatform as the best guess.
1451   if (!gfxPlatform::Initialized()) {
1452     return NS_OK;
1453   }
1454
1455   // If the screen size is empty, we are probably in xpcshell.
1456   gfx::IntSize screenSize = gfxPlatform::GetPlatform()->GetScreenSize();
1457
1458   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1459
1460   JS::Rooted<JS::Value> screenWidth(aCx, JS::Int32Value(screenSize.width));
1461   JS_SetProperty(aCx, obj, "screenWidth", screenWidth);
1462
1463   JS::Rooted<JS::Value> screenHeight(aCx, JS::Int32Value(screenSize.height));
1464   JS_SetProperty(aCx, obj, "screenHeight", screenHeight);
1465
1466   JS::Rooted<JS::Value> element(aCx, JS::ObjectValue(*obj));
1467   JS_SetElement(aCx, aOutArray, 0, element);
1468
1469   return NS_OK;
1470 }
1471
1472 NS_IMETHODIMP
1473 GfxInfoBase::GetMonitors(JSContext* aCx, JS::MutableHandleValue aResult) {
1474   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1475
1476   nsresult rv = FindMonitors(aCx, array);
1477   if (NS_FAILED(rv)) {
1478     return rv;
1479   }
1480
1481   aResult.setObject(*array);
1482   return NS_OK;
1483 }
1484
1485 NS_IMETHODIMP
1486 GfxInfoBase::RefreshMonitors() { return NS_ERROR_NOT_IMPLEMENTED; }
1487
1488 static inline bool SetJSPropertyString(JSContext* aCx,
1489                                        JS::Handle<JSObject*> aObj,
1490                                        const char* aProp, const char* aString) {
1491   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, aString));
1492   if (!str) {
1493     return false;
1494   }
1495
1496   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1497   return JS_SetProperty(aCx, aObj, aProp, val);
1498 }
1499
1500 template <typename T>
1501 static inline bool AppendJSElement(JSContext* aCx, JS::Handle<JSObject*> aObj,
1502                                    const T& aValue) {
1503   uint32_t index;
1504   if (!JS::GetArrayLength(aCx, aObj, &index)) {
1505     return false;
1506   }
1507   return JS_SetElement(aCx, aObj, index, aValue);
1508 }
1509
1510 nsresult GfxInfoBase::GetFeatures(JSContext* aCx,
1511                                   JS::MutableHandle<JS::Value> aOut) {
1512   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1513   if (!obj) {
1514     return NS_ERROR_OUT_OF_MEMORY;
1515   }
1516   aOut.setObject(*obj);
1517
1518   layers::LayersBackend backend =
1519       gfxPlatform::Initialized()
1520           ? gfxPlatform::GetPlatform()->GetCompositorBackend()
1521           : layers::LayersBackend::LAYERS_NONE;
1522   const char* backendName = layers::GetLayersBackendName(backend);
1523   SetJSPropertyString(aCx, obj, "compositor", backendName);
1524
1525   // If graphics isn't initialized yet, just stop now.
1526   if (!gfxPlatform::Initialized()) {
1527     return NS_OK;
1528   }
1529
1530   DescribeFeatures(aCx, obj);
1531   return NS_OK;
1532 }
1533
1534 nsresult GfxInfoBase::GetFeatureLog(JSContext* aCx,
1535                                     JS::MutableHandle<JS::Value> aOut) {
1536   JS::Rooted<JSObject*> containerObj(aCx, JS_NewPlainObject(aCx));
1537   if (!containerObj) {
1538     return NS_ERROR_OUT_OF_MEMORY;
1539   }
1540   aOut.setObject(*containerObj);
1541
1542   JS::Rooted<JSObject*> featureArray(aCx, JS::NewArrayObject(aCx, 0));
1543   if (!featureArray) {
1544     return NS_ERROR_OUT_OF_MEMORY;
1545   }
1546
1547   // Collect features.
1548   gfxConfig::ForEachFeature([&](const char* aName, const char* aDescription,
1549                                 FeatureState& aFeature) -> void {
1550     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1551     if (!obj) {
1552       return;
1553     }
1554     if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1555         !SetJSPropertyString(aCx, obj, "description", aDescription) ||
1556         !SetJSPropertyString(aCx, obj, "status",
1557                              FeatureStatusToString(aFeature.GetValue()))) {
1558       return;
1559     }
1560
1561     JS::Rooted<JS::Value> log(aCx);
1562     if (!BuildFeatureStateLog(aCx, aFeature, &log)) {
1563       return;
1564     }
1565     if (!JS_SetProperty(aCx, obj, "log", log)) {
1566       return;
1567     }
1568
1569     if (!AppendJSElement(aCx, featureArray, obj)) {
1570       return;
1571     }
1572   });
1573
1574   JS::Rooted<JSObject*> fallbackArray(aCx, JS::NewArrayObject(aCx, 0));
1575   if (!fallbackArray) {
1576     return NS_ERROR_OUT_OF_MEMORY;
1577   }
1578
1579   // Collect fallbacks.
1580   gfxConfig::ForEachFallback(
1581       [&](const char* aName, const char* aMessage) -> void {
1582         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1583         if (!obj) {
1584           return;
1585         }
1586
1587         if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1588             !SetJSPropertyString(aCx, obj, "message", aMessage)) {
1589           return;
1590         }
1591
1592         if (!AppendJSElement(aCx, fallbackArray, obj)) {
1593           return;
1594         }
1595       });
1596
1597   JS::Rooted<JS::Value> val(aCx);
1598
1599   val = JS::ObjectValue(*featureArray);
1600   JS_SetProperty(aCx, containerObj, "features", val);
1601
1602   val = JS::ObjectValue(*fallbackArray);
1603   JS_SetProperty(aCx, containerObj, "fallbacks", val);
1604
1605   return NS_OK;
1606 }
1607
1608 bool GfxInfoBase::BuildFeatureStateLog(JSContext* aCx,
1609                                        const FeatureState& aFeature,
1610                                        JS::MutableHandle<JS::Value> aOut) {
1611   JS::Rooted<JSObject*> log(aCx, JS::NewArrayObject(aCx, 0));
1612   if (!log) {
1613     return false;
1614   }
1615   aOut.setObject(*log);
1616
1617   aFeature.ForEachStatusChange([&](const char* aType, FeatureStatus aStatus,
1618                                    const char* aMessage,
1619                                    const nsCString& aFailureId) -> void {
1620     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1621     if (!obj) {
1622       return;
1623     }
1624
1625     if (!SetJSPropertyString(aCx, obj, "type", aType) ||
1626         !SetJSPropertyString(aCx, obj, "status",
1627                              FeatureStatusToString(aStatus)) ||
1628         (aMessage && !SetJSPropertyString(aCx, obj, "message", aMessage))) {
1629       return;
1630     }
1631
1632     if (!AppendJSElement(aCx, log, obj)) {
1633       return;
1634     }
1635   });
1636
1637   return true;
1638 }
1639
1640 void GfxInfoBase::DescribeFeatures(JSContext* aCx, JS::Handle<JSObject*> aObj) {
1641   JS::Rooted<JSObject*> obj(aCx);
1642
1643   gfx::FeatureState& hwCompositing =
1644       gfxConfig::GetFeature(gfx::Feature::HW_COMPOSITING);
1645   InitFeatureObject(aCx, aObj, "hwCompositing", hwCompositing, &obj);
1646
1647   gfx::FeatureState& gpuProcess =
1648       gfxConfig::GetFeature(gfx::Feature::GPU_PROCESS);
1649   InitFeatureObject(aCx, aObj, "gpuProcess", gpuProcess, &obj);
1650
1651   gfx::FeatureState& wrQualified =
1652       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_QUALIFIED);
1653   InitFeatureObject(aCx, aObj, "wrQualified", wrQualified, &obj);
1654
1655   gfx::FeatureState& webrender = gfxConfig::GetFeature(gfx::Feature::WEBRENDER);
1656   InitFeatureObject(aCx, aObj, "webrender", webrender, &obj);
1657
1658   gfx::FeatureState& wrCompositor =
1659       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_COMPOSITOR);
1660   InitFeatureObject(aCx, aObj, "wrCompositor", wrCompositor, &obj);
1661
1662   gfx::FeatureState& wrSoftware =
1663       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_SOFTWARE);
1664   InitFeatureObject(aCx, aObj, "wrSoftware", wrSoftware, &obj);
1665
1666   gfx::FeatureState& openglCompositing =
1667       gfxConfig::GetFeature(gfx::Feature::OPENGL_COMPOSITING);
1668   InitFeatureObject(aCx, aObj, "openglCompositing", openglCompositing, &obj);
1669
1670   gfx::FeatureState& omtp = gfxConfig::GetFeature(gfx::Feature::OMTP);
1671   InitFeatureObject(aCx, aObj, "omtp", omtp, &obj);
1672 }
1673
1674 bool GfxInfoBase::InitFeatureObject(JSContext* aCx,
1675                                     JS::Handle<JSObject*> aContainer,
1676                                     const char* aName,
1677                                     mozilla::gfx::FeatureState& aFeatureState,
1678                                     JS::MutableHandle<JSObject*> aOutObj) {
1679   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1680   if (!obj) {
1681     return false;
1682   }
1683
1684   nsCString status = aFeatureState.GetStatusAndFailureIdString();
1685
1686   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, status.get()));
1687   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1688   JS_SetProperty(aCx, obj, "status", val);
1689
1690   // Add the feature object to the container.
1691   {
1692     JS::Rooted<JS::Value> val(aCx, JS::ObjectValue(*obj));
1693     JS_SetProperty(aCx, aContainer, aName, val);
1694   }
1695
1696   aOutObj.set(obj);
1697   return true;
1698 }
1699
1700 nsresult GfxInfoBase::GetActiveCrashGuards(JSContext* aCx,
1701                                            JS::MutableHandle<JS::Value> aOut) {
1702   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1703   if (!array) {
1704     return NS_ERROR_OUT_OF_MEMORY;
1705   }
1706   aOut.setObject(*array);
1707
1708   DriverCrashGuard::ForEachActiveCrashGuard(
1709       [&](const char* aName, const char* aPrefName) -> void {
1710         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1711         if (!obj) {
1712           return;
1713         }
1714         if (!SetJSPropertyString(aCx, obj, "type", aName)) {
1715           return;
1716         }
1717         if (!SetJSPropertyString(aCx, obj, "prefName", aPrefName)) {
1718           return;
1719         }
1720         if (!AppendJSElement(aCx, array, obj)) {
1721           return;
1722         }
1723       });
1724
1725   return NS_OK;
1726 }
1727
1728 NS_IMETHODIMP
1729 GfxInfoBase::GetWebRenderEnabled(bool* aWebRenderEnabled) {
1730   *aWebRenderEnabled = gfxVars::UseWebRender();
1731   return NS_OK;
1732 }
1733
1734 NS_IMETHODIMP
1735 GfxInfoBase::GetUsesTiling(bool* aUsesTiling) {
1736   *aUsesTiling = gfxPlatform::GetPlatform()->UsesTiling();
1737   return NS_OK;
1738 }
1739
1740 NS_IMETHODIMP
1741 GfxInfoBase::GetContentUsesTiling(bool* aUsesTiling) {
1742   *aUsesTiling = gfxPlatform::GetPlatform()->ContentUsesTiling();
1743   return NS_OK;
1744 }
1745
1746 NS_IMETHODIMP
1747 GfxInfoBase::GetOffMainThreadPaintEnabled(bool* aOffMainThreadPaintEnabled) {
1748   *aOffMainThreadPaintEnabled = gfxConfig::IsEnabled(gfx::Feature::OMTP);
1749   return NS_OK;
1750 }
1751
1752 NS_IMETHODIMP
1753 GfxInfoBase::GetOffMainThreadPaintWorkerCount(
1754     int32_t* aOffMainThreadPaintWorkerCount) {
1755   if (gfxConfig::IsEnabled(gfx::Feature::OMTP)) {
1756     *aOffMainThreadPaintWorkerCount =
1757         layers::PaintThread::CalculatePaintWorkerCount();
1758   } else {
1759     *aOffMainThreadPaintWorkerCount = 0;
1760   }
1761   return NS_OK;
1762 }
1763
1764 NS_IMETHODIMP
1765 GfxInfoBase::GetTargetFrameRate(uint32_t* aTargetFrameRate) {
1766   *aTargetFrameRate = gfxPlatform::TargetFrameRate();
1767   return NS_OK;
1768 }
1769
1770 NS_IMETHODIMP
1771 GfxInfoBase::GetIsHeadless(bool* aIsHeadless) {
1772   *aIsHeadless = gfxPlatform::IsHeadless();
1773   return NS_OK;
1774 }
1775
1776 NS_IMETHODIMP
1777 GfxInfoBase::GetContentBackend(nsAString& aContentBackend) {
1778   BackendType backend = gfxPlatform::GetPlatform()->GetDefaultContentBackend();
1779   nsString outStr;
1780
1781   switch (backend) {
1782     case BackendType::DIRECT2D1_1: {
1783       outStr.AppendPrintf("Direct2D 1.1");
1784       break;
1785     }
1786     case BackendType::SKIA: {
1787       outStr.AppendPrintf("Skia");
1788       break;
1789     }
1790     case BackendType::CAIRO: {
1791       outStr.AppendPrintf("Cairo");
1792       break;
1793     }
1794     default:
1795       return NS_ERROR_FAILURE;
1796   }
1797
1798   aContentBackend.Assign(outStr);
1799   return NS_OK;
1800 }
1801
1802 NS_IMETHODIMP
1803 GfxInfoBase::GetUsingGPUProcess(bool* aOutValue) {
1804   GPUProcessManager* gpu = GPUProcessManager::Get();
1805   if (!gpu) {
1806     // Not supported in content processes.
1807     return NS_ERROR_FAILURE;
1808   }
1809
1810   *aOutValue = !!gpu->GetGPUChild();
1811   return NS_OK;
1812 }
1813
1814 NS_IMETHODIMP
1815 GfxInfoBase::ControlGPUProcessForXPCShell(bool aEnable, bool* _retval) {
1816   gfxPlatform::GetPlatform();
1817
1818   GPUProcessManager* gpm = GPUProcessManager::Get();
1819   if (aEnable) {
1820     if (!gfxConfig::IsEnabled(gfx::Feature::GPU_PROCESS)) {
1821       gfxConfig::UserForceEnable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1822     }
1823     gpm->LaunchGPUProcess();
1824     gpm->EnsureGPUReady();
1825   } else {
1826     gfxConfig::UserDisable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1827     gpm->KillProcess();
1828   }
1829
1830   *_retval = true;
1831   return NS_OK;
1832 }
1833
1834 GfxInfoCollectorBase::GfxInfoCollectorBase() {
1835   GfxInfoBase::AddCollector(this);
1836 }
1837
1838 GfxInfoCollectorBase::~GfxInfoCollectorBase() {
1839   GfxInfoBase::RemoveCollector(this);
1840 }