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 "js/PropertyAndElement.h"  // JS_SetElement, JS_SetProperty
  17 #include "nsCOMPtr.h"
  18 #include "nsCOMArray.h"
  19 #include "nsString.h"
  20 #include "nsUnicharUtils.h"
  21 #include "nsVersionComparator.h"
  22 #include "mozilla/Services.h"
  23 #include "mozilla/Observer.h"
  24 #include "nsIObserver.h"
  25 #include "nsIObserverService.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/BuildConstants.h"
  34 #include "mozilla/gfx/GPUProcessManager.h"
  35 #include "mozilla/gfx/Logging.h"
  36 #include "mozilla/gfx/gfxVars.h"
  37 #include "mozilla/widget/ScreenManager.h"
  38 #include "mozilla/widget/Screen.h"
  39
  40 #include "jsapi.h"
  41
  42 #include "gfxPlatform.h"
  43 #include "gfxConfig.h"
  44 #include "DriverCrashGuard.h"
  45
  46 using namespace mozilla::widget;
  47 using namespace mozilla;
  48 using mozilla::MutexAutoLock;
  49
  50 nsTArray<GfxDriverInfo>* GfxInfoBase::sDriverInfo;
  51 StaticAutoPtr<nsTArray<gfx::GfxInfoFeatureStatus>> GfxInfoBase::sFeatureStatus;
  52 bool GfxInfoBase::sDriverInfoObserverInitialized;
  53 bool GfxInfoBase::sShutdownOccurred;
  54
  55 // Call this when setting sFeatureStatus to a non-null pointer to
  56 // ensure destruction even if the GfxInfo component is never instantiated.
  57 static void InitFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>* aPtr) {
  58   static std::once_flag sOnce;
  59   std::call_once(sOnce, [] { ClearOnShutdown(&GfxInfoBase::sFeatureStatus); });
  60   GfxInfoBase::sFeatureStatus = aPtr;
  61 }
  62
  63 // Observes for shutdown so that the child GfxDriverInfo list is freed.
  64 class ShutdownObserver : public nsIObserver {
  65   virtual ~ShutdownObserver() = default;
  66
  67  public:
  68   ShutdownObserver() = default;
  69
  70   NS_DECL_ISUPPORTS
  71
  72   NS_IMETHOD Observe(nsISupports* subject, const char* aTopic,
  73                      const char16_t* aData) override {
  74     MOZ_ASSERT(strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0);
  75
  76     delete GfxInfoBase::sDriverInfo;
  77     GfxInfoBase::sDriverInfo = nullptr;
  78
  79     for (auto& deviceFamily : GfxDriverInfo::sDeviceFamilies) {
  80       delete deviceFamily;
  81       deviceFamily = nullptr;
  82     }
  83
  84     for (auto& windowProtocol : GfxDriverInfo::sWindowProtocol) {
  85       delete windowProtocol;
  86       windowProtocol = nullptr;
  87     }
  88
  89     for (auto& deviceVendor : GfxDriverInfo::sDeviceVendors) {
  90       delete deviceVendor;
  91       deviceVendor = nullptr;
  92     }
  93
  94     for (auto& driverVendor : GfxDriverInfo::sDriverVendors) {
  95       delete driverVendor;
  96       driverVendor = nullptr;
  97     }
  98
  99     GfxInfoBase::sShutdownOccurred = true;
 100
 101     return NS_OK;
 102   }
 103 };
 104
 105 NS_IMPL_ISUPPORTS(ShutdownObserver, nsIObserver)
 106
 107 static void InitGfxDriverInfoShutdownObserver() {
 108   if (GfxInfoBase::sDriverInfoObserverInitialized) return;
 109
 110   GfxInfoBase::sDriverInfoObserverInitialized = true;
 111
 112   nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
 113   if (!observerService) {
 114     NS_WARNING("Could not get observer service!");
 115     return;
 116   }
 117
 118   ShutdownObserver* obs = new ShutdownObserver();
 119   observerService->AddObserver(obs, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
 120 }
 121
 122 using namespace mozilla::widget;
 123 using namespace mozilla::gfx;
 124 using namespace mozilla;
 125
 126 NS_IMPL_ISUPPORTS(GfxInfoBase, nsIGfxInfo, nsIObserver,
 127                   nsISupportsWeakReference)
 128
 129 #define BLOCKLIST_PREF_BRANCH "gfx.blacklist."
 130 #define SUGGESTED_VERSION_PREF BLOCKLIST_PREF_BRANCH "suggested-driver-version"
 131
 132 static const char* GetPrefNameForFeature(int32_t aFeature) {
 133   const char* name = nullptr;
 134   switch (aFeature) {
 135     case nsIGfxInfo::FEATURE_DIRECT2D:
 136       name = BLOCKLIST_PREF_BRANCH "direct2d";
 137       break;
 138     case nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS:
 139       name = BLOCKLIST_PREF_BRANCH "layers.direct3d9";
 140       break;
 141     case nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS:
 142       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10";
 143       break;
 144     case nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS:
 145       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10-1";
 146       break;
 147     case nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS:
 148       name = BLOCKLIST_PREF_BRANCH "layers.direct3d11";
 149       break;
 150     case nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE:
 151       name = BLOCKLIST_PREF_BRANCH "direct3d11angle";
 152       break;
 153     case nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING:
 154       name = BLOCKLIST_PREF_BRANCH "hardwarevideodecoding";
 155       break;
 156     case nsIGfxInfo::FEATURE_OPENGL_LAYERS:
 157       name = BLOCKLIST_PREF_BRANCH "layers.opengl";
 158       break;
 159     case nsIGfxInfo::FEATURE_WEBGL_OPENGL:
 160       name = BLOCKLIST_PREF_BRANCH "webgl.opengl";
 161       break;
 162     case nsIGfxInfo::FEATURE_WEBGL_ANGLE:
 163       name = BLOCKLIST_PREF_BRANCH "webgl.angle";
 164       break;
 165     case nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA:
 166       name = BLOCKLIST_PREF_BRANCH "webgl.msaa";
 167       break;
 168     case nsIGfxInfo::FEATURE_STAGEFRIGHT:
 169       name = BLOCKLIST_PREF_BRANCH "stagefright";
 170       break;
 171     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264:
 172       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.h264";
 173       break;
 174     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE:
 175       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.encode";
 176       break;
 177     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE:
 178       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.decode";
 179       break;
 180     case nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION:
 181       name = BLOCKLIST_PREF_BRANCH "canvas2d.acceleration";
 182       break;
 183     case nsIGfxInfo::FEATURE_DX_INTEROP2:
 184       name = BLOCKLIST_PREF_BRANCH "dx.interop2";
 185       break;
 186     case nsIGfxInfo::FEATURE_GPU_PROCESS:
 187       name = BLOCKLIST_PREF_BRANCH "gpu.process";
 188       break;
 189     case nsIGfxInfo::FEATURE_WEBGL2:
 190       name = BLOCKLIST_PREF_BRANCH "webgl2";
 191       break;
 192     case nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX:
 193       name = BLOCKLIST_PREF_BRANCH "d3d11.keyed.mutex";
 194       break;
 195     case nsIGfxInfo::FEATURE_WEBRENDER:
 196       name = BLOCKLIST_PREF_BRANCH "webrender";
 197       break;
 198     case nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR:
 199       name = BLOCKLIST_PREF_BRANCH "webrender.compositor";
 200       break;
 201     case nsIGfxInfo::FEATURE_DX_NV12:
 202       name = BLOCKLIST_PREF_BRANCH "dx.nv12";
 203       break;
 204     case nsIGfxInfo::FEATURE_DX_P010:
 205       name = BLOCKLIST_PREF_BRANCH "dx.p010";
 206       break;
 207     case nsIGfxInfo::FEATURE_DX_P016:
 208       name = BLOCKLIST_PREF_BRANCH "dx.p016";
 209       break;
 210     case nsIGfxInfo::FEATURE_VP8_HW_DECODE:
 211       name = BLOCKLIST_PREF_BRANCH "vp8.hw-decode";
 212       break;
 213     case nsIGfxInfo::FEATURE_VP9_HW_DECODE:
 214       name = BLOCKLIST_PREF_BRANCH "vp9.hw-decode";
 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_OPTIMIZED_SHADERS:
 229       name = BLOCKLIST_PREF_BRANCH "webrender.optimized-shaders";
 230       break;
 231     case nsIGfxInfo::FEATURE_X11_EGL:
 232       name = BLOCKLIST_PREF_BRANCH "x11.egl";
 233       break;
 234     case nsIGfxInfo::FEATURE_DMABUF:
 235       name = BLOCKLIST_PREF_BRANCH "dmabuf";
 236       break;
 237     case nsIGfxInfo::FEATURE_WEBGPU:
 238       name = BLOCKLIST_PREF_BRANCH "webgpu";
 239       break;
 240     case nsIGfxInfo::FEATURE_VIDEO_OVERLAY:
 241       name = BLOCKLIST_PREF_BRANCH "video-overlay";
 242       break;
 243     case nsIGfxInfo::FEATURE_HW_DECODED_VIDEO_ZERO_COPY:
 244       name = BLOCKLIST_PREF_BRANCH "hw-video-zero-copy";
 245       break;
 246     case nsIGfxInfo::FEATURE_WEBRENDER_SHADER_CACHE:
 247       name = BLOCKLIST_PREF_BRANCH "webrender.program-binary-disk";
 248       break;
 249     case nsIGfxInfo::FEATURE_WEBRENDER_PARTIAL_PRESENT:
 250       name = BLOCKLIST_PREF_BRANCH "webrender.partial-present";
 251       break;
 252     case nsIGfxInfo::FEATURE_DMABUF_SURFACE_EXPORT:
 253       name = BLOCKLIST_PREF_BRANCH "dmabuf.surface-export";
 254       break;
 255     case nsIGfxInfo::FEATURE_REUSE_DECODER_DEVICE:
 256       name = BLOCKLIST_PREF_BRANCH "reuse-decoder-device";
 257       break;
 258     case nsIGfxInfo::FEATURE_BACKDROP_FILTER:
 259       name = BLOCKLIST_PREF_BRANCH "backdrop.filter";
 260       break;
 261     case nsIGfxInfo::FEATURE_ACCELERATED_CANVAS2D:
 262       name = BLOCKLIST_PREF_BRANCH "accelerated-canvas2d";
 263       break;
 264     case nsIGfxInfo::FEATURE_H264_HW_DECODE:
 265       name = BLOCKLIST_PREF_BRANCH "h264.hw-decode";
 266       break;
 267     case nsIGfxInfo::FEATURE_AV1_HW_DECODE:
 268       name = BLOCKLIST_PREF_BRANCH "av1.hw-decode";
 269       break;
 270     case nsIGfxInfo::FEATURE_VIDEO_SOFTWARE_OVERLAY:
 271       name = BLOCKLIST_PREF_BRANCH "video-software-overlay";
 272       break;
 273     case nsIGfxInfo::FEATURE_WEBGL_USE_HARDWARE:
 274       name = BLOCKLIST_PREF_BRANCH "webgl-use-hardware";
 275       break;
 276     default:
 277       MOZ_ASSERT_UNREACHABLE("Unexpected nsIGfxInfo feature?!");
 278       break;
 279   }
 280
 281   return name;
 282 }
 283
 284 // Returns the value of the pref for the relevant feature in aValue.
 285 // If the pref doesn't exist, aValue is not touched, and returns false.
 286 static bool GetPrefValueForFeature(int32_t aFeature, int32_t& aValue,
 287                                    nsACString& aFailureId) {
 288   const char* prefname = GetPrefNameForFeature(aFeature);
 289   if (!prefname) return false;
 290
 291   aValue = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 292   if (!NS_SUCCEEDED(Preferences::GetInt(prefname, &aValue))) {
 293     return false;
 294   }
 295
 296   if (aValue == nsIGfxInfo::FEATURE_DENIED) {
 297     // We should never see the DENIED status with the downloadable blocklist.
 298     return false;
 299   }
 300
 301   nsCString failureprefname(prefname);
 302   failureprefname += ".failureid";
 303   nsAutoCString failureValue;
 304   nsresult rv = Preferences::GetCString(failureprefname.get(), failureValue);
 305   if (NS_SUCCEEDED(rv)) {
 306     aFailureId = failureValue.get();
 307   } else {
 308     aFailureId = "FEATURE_FAILURE_BLOCKLIST_PREF";
 309   }
 310
 311   return true;
 312 }
 313
 314 static void SetPrefValueForFeature(int32_t aFeature, int32_t aValue,
 315                                    const nsACString& aFailureId) {
 316   const char* prefname = GetPrefNameForFeature(aFeature);
 317   if (!prefname) return;
 318   if (XRE_IsParentProcess()) {
 319     GfxInfoBase::sFeatureStatus = nullptr;
 320   }
 321
 322   Preferences::SetInt(prefname, aValue);
 323   if (!aFailureId.IsEmpty()) {
 324     nsAutoCString failureprefname(prefname);
 325     failureprefname += ".failureid";
 326     Preferences::SetCString(failureprefname.get(), aFailureId);
 327   }
 328 }
 329
 330 static void RemovePrefForFeature(int32_t aFeature) {
 331   const char* prefname = GetPrefNameForFeature(aFeature);
 332   if (!prefname) return;
 333
 334   if (XRE_IsParentProcess()) {
 335     GfxInfoBase::sFeatureStatus = nullptr;
 336   }
 337   Preferences::ClearUser(prefname);
 338 }
 339
 340 static bool GetPrefValueForDriverVersion(nsCString& aVersion) {
 341   return NS_SUCCEEDED(
 342       Preferences::GetCString(SUGGESTED_VERSION_PREF, aVersion));
 343 }
 344
 345 static void SetPrefValueForDriverVersion(const nsAString& aVersion) {
 346   Preferences::SetString(SUGGESTED_VERSION_PREF, aVersion);
 347 }
 348
 349 static void RemovePrefForDriverVersion() {
 350   Preferences::ClearUser(SUGGESTED_VERSION_PREF);
 351 }
 352
 353 static OperatingSystem BlocklistOSToOperatingSystem(const nsAString& os) {
 354   if (os.EqualsLiteral("WINNT 6.1")) {
 355     return OperatingSystem::Windows7;
 356   }
 357   if (os.EqualsLiteral("WINNT 6.2")) {
 358     return OperatingSystem::Windows8;
 359   }
 360   if (os.EqualsLiteral("WINNT 6.3")) {
 361     return OperatingSystem::Windows8_1;
 362   }
 363   if (os.EqualsLiteral("WINNT 10.0")) {
 364     return OperatingSystem::Windows10;
 365   }
 366   if (os.EqualsLiteral("Linux")) {
 367     return OperatingSystem::Linux;
 368   }
 369   if (os.EqualsLiteral("Darwin 9")) {
 370     return OperatingSystem::OSX10_5;
 371   }
 372   if (os.EqualsLiteral("Darwin 10")) {
 373     return OperatingSystem::OSX10_6;
 374   }
 375   if (os.EqualsLiteral("Darwin 11")) {
 376     return OperatingSystem::OSX10_7;
 377   }
 378   if (os.EqualsLiteral("Darwin 12")) {
 379     return OperatingSystem::OSX10_8;
 380   }
 381   if (os.EqualsLiteral("Darwin 13")) {
 382     return OperatingSystem::OSX10_9;
 383   }
 384   if (os.EqualsLiteral("Darwin 14")) {
 385     return OperatingSystem::OSX10_10;
 386   }
 387   if (os.EqualsLiteral("Darwin 15")) {
 388     return OperatingSystem::OSX10_11;
 389   }
 390   if (os.EqualsLiteral("Darwin 16")) {
 391     return OperatingSystem::OSX10_12;
 392   }
 393   if (os.EqualsLiteral("Darwin 17")) {
 394     return OperatingSystem::OSX10_13;
 395   }
 396   if (os.EqualsLiteral("Darwin 18")) {
 397     return OperatingSystem::OSX10_14;
 398   }
 399   if (os.EqualsLiteral("Darwin 19")) {
 400     return OperatingSystem::OSX10_15;
 401   }
 402   if (os.EqualsLiteral("Darwin 20")) {
 403     return OperatingSystem::OSX11_0;
 404   }
 405   if (os.EqualsLiteral("Android")) {
 406     return OperatingSystem::Android;
 407     // For historical reasons, "All" in blocklist means "All Windows"
 408   }
 409   if (os.EqualsLiteral("All")) {
 410     return OperatingSystem::Windows;
 411   }
 412   if (os.EqualsLiteral("Darwin")) {
 413     return OperatingSystem::OSX;
 414   }
 415
 416   return OperatingSystem::Unknown;
 417 }
 418
 419 static GfxDeviceFamily* BlocklistDevicesToDeviceFamily(
 420     nsTArray<nsCString>& devices) {
 421   if (devices.Length() == 0) return nullptr;
 422
 423   // For each device, get its device ID, and return a freshly-allocated
 424   // GfxDeviceFamily with the contents of that array.
 425   GfxDeviceFamily* deviceIds = new GfxDeviceFamily;
 426
 427   for (uint32_t i = 0; i < devices.Length(); ++i) {
 428     // We make sure we don't add any "empty" device entries to the array, so
 429     // we don't need to check if devices[i] is empty.
 430     deviceIds->Append(NS_ConvertUTF8toUTF16(devices[i]));
 431   }
 432
 433   return deviceIds;
 434 }
 435
 436 static int32_t BlocklistFeatureToGfxFeature(const nsAString& aFeature) {
 437   MOZ_ASSERT(!aFeature.IsEmpty());
 438   if (aFeature.EqualsLiteral("DIRECT2D")) {
 439     return nsIGfxInfo::FEATURE_DIRECT2D;
 440   }
 441   if (aFeature.EqualsLiteral("DIRECT3D_9_LAYERS")) {
 442     return nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS;
 443   }
 444   if (aFeature.EqualsLiteral("DIRECT3D_10_LAYERS")) {
 445     return nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS;
 446   }
 447   if (aFeature.EqualsLiteral("DIRECT3D_10_1_LAYERS")) {
 448     return nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS;
 449   }
 450   if (aFeature.EqualsLiteral("DIRECT3D_11_LAYERS")) {
 451     return nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS;
 452   }
 453   if (aFeature.EqualsLiteral("DIRECT3D_11_ANGLE")) {
 454     return nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE;
 455   }
 456   if (aFeature.EqualsLiteral("HARDWARE_VIDEO_DECODING")) {
 457     return nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING;
 458   }
 459   if (aFeature.EqualsLiteral("OPENGL_LAYERS")) {
 460     return nsIGfxInfo::FEATURE_OPENGL_LAYERS;
 461   }
 462   if (aFeature.EqualsLiteral("WEBGL_OPENGL")) {
 463     return nsIGfxInfo::FEATURE_WEBGL_OPENGL;
 464   }
 465   if (aFeature.EqualsLiteral("WEBGL_ANGLE")) {
 466     return nsIGfxInfo::FEATURE_WEBGL_ANGLE;
 467   }
 468   if (aFeature.EqualsLiteral("WEBGL_MSAA")) {
 469     return nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA;
 470   }
 471   if (aFeature.EqualsLiteral("STAGEFRIGHT")) {
 472     return nsIGfxInfo::FEATURE_STAGEFRIGHT;
 473   }
 474   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_ENCODE")) {
 475     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE;
 476   }
 477   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_DECODE")) {
 478     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE;
 479   }
 480   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_H264")) {
 481     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264;
 482   }
 483   if (aFeature.EqualsLiteral("CANVAS2D_ACCELERATION")) {
 484     return nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION;
 485   }
 486   if (aFeature.EqualsLiteral("DX_INTEROP2")) {
 487     return nsIGfxInfo::FEATURE_DX_INTEROP2;
 488   }
 489   if (aFeature.EqualsLiteral("GPU_PROCESS")) {
 490     return nsIGfxInfo::FEATURE_GPU_PROCESS;
 491   }
 492   if (aFeature.EqualsLiteral("WEBGL2")) {
 493     return nsIGfxInfo::FEATURE_WEBGL2;
 494   }
 495   if (aFeature.EqualsLiteral("D3D11_KEYED_MUTEX")) {
 496     return nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX;
 497   }
 498   if (aFeature.EqualsLiteral("WEBRENDER")) {
 499     return nsIGfxInfo::FEATURE_WEBRENDER;
 500   }
 501   if (aFeature.EqualsLiteral("WEBRENDER_COMPOSITOR")) {
 502     return nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR;
 503   }
 504   if (aFeature.EqualsLiteral("DX_NV12")) {
 505     return nsIGfxInfo::FEATURE_DX_NV12;
 506   }
 507   if (aFeature.EqualsLiteral("VP8_HW_DECODE")) {
 508     return nsIGfxInfo::FEATURE_VP8_HW_DECODE;
 509   }
 510   if (aFeature.EqualsLiteral("VP9_HW_DECODE")) {
 511     return nsIGfxInfo::FEATURE_VP9_HW_DECODE;
 512   }
 513   if (aFeature.EqualsLiteral("GL_SWIZZLE")) {
 514     return nsIGfxInfo::FEATURE_GL_SWIZZLE;
 515   }
 516   if (aFeature.EqualsLiteral("WEBRENDER_SCISSORED_CACHE_CLEARS")) {
 517     return nsIGfxInfo::FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS;
 518   }
 519   if (aFeature.EqualsLiteral("ALLOW_WEBGL_OUT_OF_PROCESS")) {
 520     return nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS;
 521   }
 522   if (aFeature.EqualsLiteral("THREADSAFE_GL")) {
 523     return nsIGfxInfo::FEATURE_THREADSAFE_GL;
 524   }
 525   if (aFeature.EqualsLiteral("X11_EGL")) {
 526     return nsIGfxInfo::FEATURE_X11_EGL;
 527   }
 528   if (aFeature.EqualsLiteral("DMABUF")) {
 529     return nsIGfxInfo::FEATURE_DMABUF;
 530   }
 531   if (aFeature.EqualsLiteral("WEBGPU")) {
 532     return nsIGfxInfo::FEATURE_WEBGPU;
 533   }
 534   if (aFeature.EqualsLiteral("VIDEO_OVERLAY")) {
 535     return nsIGfxInfo::FEATURE_VIDEO_OVERLAY;
 536   }
 537   if (aFeature.EqualsLiteral("HW_DECODED_VIDEO_ZERO_COPY")) {
 538     return nsIGfxInfo::FEATURE_HW_DECODED_VIDEO_ZERO_COPY;
 539   }
 540   if (aFeature.EqualsLiteral("REUSE_DECODER_DEVICE")) {
 541     return nsIGfxInfo::FEATURE_REUSE_DECODER_DEVICE;
 542   }
 543   if (aFeature.EqualsLiteral("WEBRENDER_PARTIAL_PRESENT")) {
 544     return nsIGfxInfo::FEATURE_WEBRENDER_PARTIAL_PRESENT;
 545   }
 546   if (aFeature.EqualsLiteral("BACKDROP_FILTER")) {
 547     return nsIGfxInfo::FEATURE_BACKDROP_FILTER;
 548   }
 549   if (aFeature.EqualsLiteral("ACCELERATED_CANVAS2D")) {
 550     return nsIGfxInfo::FEATURE_ACCELERATED_CANVAS2D;
 551   }
 552
 553   // If we don't recognize the feature, it may be new, and something
 554   // this version doesn't understand.  So, nothing to do.  This is
 555   // different from feature not being specified at all, in which case
 556   // this method should not get called and we should continue with the
 557   // "all features" blocklisting.
 558   return -1;
 559 }
 560
 561 static int32_t BlocklistFeatureStatusToGfxFeatureStatus(
 562     const nsAString& aStatus) {
 563   if (aStatus.EqualsLiteral("STATUS_OK")) {
 564     return nsIGfxInfo::FEATURE_STATUS_OK;
 565   }
 566   if (aStatus.EqualsLiteral("BLOCKED_DRIVER_VERSION")) {
 567     return nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION;
 568   }
 569   if (aStatus.EqualsLiteral("BLOCKED_DEVICE")) {
 570     return nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
 571   }
 572   if (aStatus.EqualsLiteral("DISCOURAGED")) {
 573     return nsIGfxInfo::FEATURE_DISCOURAGED;
 574   }
 575   if (aStatus.EqualsLiteral("BLOCKED_OS_VERSION")) {
 576     return nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION;
 577   }
 578   if (aStatus.EqualsLiteral("DENIED")) {
 579     return nsIGfxInfo::FEATURE_DENIED;
 580   }
 581   if (aStatus.EqualsLiteral("ALLOW_QUALIFIED")) {
 582     return nsIGfxInfo::FEATURE_ALLOW_QUALIFIED;
 583   }
 584   if (aStatus.EqualsLiteral("ALLOW_ALWAYS")) {
 585     return nsIGfxInfo::FEATURE_ALLOW_ALWAYS;
 586   }
 587
 588   // Do not allow it to set STATUS_UNKNOWN.  Also, we are not
 589   // expecting the "mismatch" status showing up here.
 590
 591   return nsIGfxInfo::FEATURE_STATUS_OK;
 592 }
 593
 594 static VersionComparisonOp BlocklistComparatorToComparisonOp(
 595     const nsAString& op) {
 596   if (op.EqualsLiteral("LESS_THAN")) {
 597     return DRIVER_LESS_THAN;
 598   }
 599   if (op.EqualsLiteral("BUILD_ID_LESS_THAN")) {
 600     return DRIVER_BUILD_ID_LESS_THAN;
 601   }
 602   if (op.EqualsLiteral("LESS_THAN_OR_EQUAL")) {
 603     return DRIVER_LESS_THAN_OR_EQUAL;
 604   }
 605   if (op.EqualsLiteral("BUILD_ID_LESS_THAN_OR_EQUAL")) {
 606     return DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL;
 607   }
 608   if (op.EqualsLiteral("GREATER_THAN")) {
 609     return DRIVER_GREATER_THAN;
 610   }
 611   if (op.EqualsLiteral("GREATER_THAN_OR_EQUAL")) {
 612     return DRIVER_GREATER_THAN_OR_EQUAL;
 613   }
 614   if (op.EqualsLiteral("EQUAL")) {
 615     return DRIVER_EQUAL;
 616   }
 617   if (op.EqualsLiteral("NOT_EQUAL")) {
 618     return DRIVER_NOT_EQUAL;
 619   }
 620   if (op.EqualsLiteral("BETWEEN_EXCLUSIVE")) {
 621     return DRIVER_BETWEEN_EXCLUSIVE;
 622   }
 623   if (op.EqualsLiteral("BETWEEN_INCLUSIVE")) {
 624     return DRIVER_BETWEEN_INCLUSIVE;
 625   }
 626   if (op.EqualsLiteral("BETWEEN_INCLUSIVE_START")) {
 627     return DRIVER_BETWEEN_INCLUSIVE_START;
 628   }
 629
 630   return DRIVER_COMPARISON_IGNORED;
 631 }
 632
 633 /*
 634   Deserialize Blocklist entries from string.
 635   e.g:
 636   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
 637 */
 638 static bool BlocklistEntryToDriverInfo(const nsACString& aBlocklistEntry,
 639                                        GfxDriverInfo& aDriverInfo) {
 640   // If we get an application version to be zero, something is not working
 641   // and we are not going to bother checking the blocklist versions.
 642   // See TestGfxWidgets.cpp for how version comparison works.
 643   // <versionRange minVersion="42.0a1" maxVersion="45.0"></versionRange>
 644   static mozilla::Version zeroV("0");
 645   static mozilla::Version appV(GfxInfoBase::GetApplicationVersion().get());
 646   if (appV <= zeroV) {
 647     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 648         << "Invalid application version "
 649         << GfxInfoBase::GetApplicationVersion().get();
 650   }
 651
 652   aDriverInfo.mRuleId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID"_ns;
 653
 654   for (const auto& keyValue : aBlocklistEntry.Split('\t')) {
 655     nsTArray<nsCString> splitted;
 656     ParseString(keyValue, ':', splitted);
 657     if (splitted.Length() != 2) {
 658       // If we don't recognize the input data, we do not want to proceed.
 659       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 660           << "Unrecognized data " << nsCString(keyValue).get();
 661       return false;
 662     }
 663     const nsCString& key = splitted[0];
 664     const nsCString& value = splitted[1];
 665     NS_ConvertUTF8toUTF16 dataValue(value);
 666
 667     if (value.Length() == 0) {
 668       // Safety check for empty values.
 669       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 670           << "Empty value for " << key.get();
 671       return false;
 672     }
 673
 674     if (key.EqualsLiteral("blockID")) {
 675       nsCString blockIdStr = "FEATURE_FAILURE_DL_BLOCKLIST_"_ns + value;
 676       aDriverInfo.mRuleId = blockIdStr.get();
 677     } else if (key.EqualsLiteral("os")) {
 678       aDriverInfo.mOperatingSystem = BlocklistOSToOperatingSystem(dataValue);
 679     } else if (key.EqualsLiteral("osversion")) {
 680       aDriverInfo.mOperatingSystemVersion = strtoul(value.get(), nullptr, 10);
 681     } else if (key.EqualsLiteral("windowProtocol")) {
 682       aDriverInfo.mWindowProtocol = dataValue;
 683     } else if (key.EqualsLiteral("vendor")) {
 684       aDriverInfo.mAdapterVendor = dataValue;
 685     } else if (key.EqualsLiteral("driverVendor")) {
 686       aDriverInfo.mDriverVendor = dataValue;
 687     } else if (key.EqualsLiteral("feature")) {
 688       aDriverInfo.mFeature = BlocklistFeatureToGfxFeature(dataValue);
 689       if (aDriverInfo.mFeature < 0) {
 690         // If we don't recognize the feature, we do not want to proceed.
 691         gfxWarning() << "Unrecognized feature " << value.get();
 692         return false;
 693       }
 694     } else if (key.EqualsLiteral("featureStatus")) {
 695       aDriverInfo.mFeatureStatus =
 696           BlocklistFeatureStatusToGfxFeatureStatus(dataValue);
 697     } else if (key.EqualsLiteral("driverVersion")) {
 698       uint64_t version;
 699       if (ParseDriverVersion(dataValue, &version))
 700         aDriverInfo.mDriverVersion = version;
 701     } else if (key.EqualsLiteral("driverVersionMax")) {
 702       uint64_t version;
 703       if (ParseDriverVersion(dataValue, &version))
 704         aDriverInfo.mDriverVersionMax = version;
 705     } else if (key.EqualsLiteral("driverVersionComparator")) {
 706       aDriverInfo.mComparisonOp = BlocklistComparatorToComparisonOp(dataValue);
 707     } else if (key.EqualsLiteral("model")) {
 708       aDriverInfo.mModel = dataValue;
 709     } else if (key.EqualsLiteral("product")) {
 710       aDriverInfo.mProduct = dataValue;
 711     } else if (key.EqualsLiteral("manufacturer")) {
 712       aDriverInfo.mManufacturer = dataValue;
 713     } else if (key.EqualsLiteral("hardware")) {
 714       aDriverInfo.mHardware = dataValue;
 715     } else if (key.EqualsLiteral("versionRange")) {
 716       nsTArray<nsCString> versionRange;
 717       ParseString(value, ',', versionRange);
 718       if (versionRange.Length() != 2) {
 719         gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 720             << "Unrecognized versionRange " << value.get();
 721         return false;
 722       }
 723       const nsCString& minValue = versionRange[0];
 724       const nsCString& maxValue = versionRange[1];
 725
 726       mozilla::Version minV(minValue.get());
 727       mozilla::Version maxV(maxValue.get());
 728
 729       if (minV > zeroV && !(appV >= minV)) {
 730         // The version of the application is less than the minimal version
 731         // this blocklist entry applies to, so we can just ignore it by
 732         // returning false and letting the caller deal with it.
 733         return false;
 734       }
 735       if (maxV > zeroV && !(appV <= maxV)) {
 736         // The version of the application is more than the maximal version
 737         // this blocklist entry applies to, so we can just ignore it by
 738         // returning false and letting the caller deal with it.
 739         return false;
 740       }
 741     } else if (key.EqualsLiteral("devices")) {
 742       nsTArray<nsCString> devices;
 743       ParseString(value, ',', devices);
 744       GfxDeviceFamily* deviceIds = BlocklistDevicesToDeviceFamily(devices);
 745       if (deviceIds) {
 746         // Get GfxDriverInfo to adopt the devices array we created.
 747         aDriverInfo.mDeleteDevices = true;
 748         aDriverInfo.mDevices = deviceIds;
 749       }
 750     }
 751     // We explicitly ignore unknown elements.
 752   }
 753
 754   return true;
 755 }
 756
 757 NS_IMETHODIMP
 758 GfxInfoBase::Observe(nsISupports* aSubject, const char* aTopic,
 759                      const char16_t* aData) {
 760   if (strcmp(aTopic, "blocklist-data-gfxItems") == 0) {
 761     nsTArray<GfxDriverInfo> driverInfo;
 762     NS_ConvertUTF16toUTF8 utf8Data(aData);
 763
 764     for (const auto& blocklistEntry : utf8Data.Split('\n')) {
 765       GfxDriverInfo di;
 766       if (BlocklistEntryToDriverInfo(blocklistEntry, di)) {
 767         // XXX Changing this to driverInfo.AppendElement(di) causes leaks.
 768         // Probably some non-standard semantics of the copy/move operations?
 769         *driverInfo.AppendElement() = di;
 770         // Prevent di falling out of scope from destroying the devices.
 771         di.mDeleteDevices = false;
 772       } else {
 773         driverInfo.AppendElement();
 774       }
 775     }
 776
 777     EvaluateDownloadedBlocklist(driverInfo);
 778   }
 779
 780   return NS_OK;
 781 }
 782
 783 GfxInfoBase::GfxInfoBase() : mScreenPixels(INT64_MAX), mMutex("GfxInfoBase") {}
 784
 785 GfxInfoBase::~GfxInfoBase() = default;
 786
 787 nsresult GfxInfoBase::Init() {
 788   InitGfxDriverInfoShutdownObserver();
 789
 790   nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
 791   if (os) {
 792     os->AddObserver(this, "blocklist-data-gfxItems", true);
 793   }
 794
 795   return NS_OK;
 796 }
 797
 798 void GfxInfoBase::GetData() {
 799   if (mScreenPixels != INT64_MAX) {
 800     // Already initialized.
 801     return;
 802   }
 803
 804   ScreenManager::GetSingleton().GetTotalScreenPixels(&mScreenPixels);
 805 }
 806
 807 NS_IMETHODIMP
 808 GfxInfoBase::GetFeatureStatus(int32_t aFeature, nsACString& aFailureId,
 809                               int32_t* aStatus) {
 810   // Ignore the gfx.blocklist.all pref on release and beta.
 811 #if defined(RELEASE_OR_BETA)
 812   int32_t blocklistAll = 0;
 813 #else
 814   int32_t blocklistAll = StaticPrefs::gfx_blocklist_all_AtStartup();
 815 #endif
 816   if (blocklistAll > 0) {
 817     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 818         << "Forcing blocklisting all features";
 819     *aStatus = FEATURE_BLOCKED_DEVICE;
 820     aFailureId = "FEATURE_FAILURE_BLOCK_ALL";
 821     return NS_OK;
 822   }
 823
 824   if (blocklistAll < 0) {
 825     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 826         << "Ignoring any feature blocklisting.";
 827     *aStatus = FEATURE_STATUS_OK;
 828     return NS_OK;
 829   }
 830
 831   // This is how we evaluate the downloadable blocklist. If there is no pref,
 832   // then we will fallback to checking the static blocklist.
 833   if (GetPrefValueForFeature(aFeature, *aStatus, aFailureId)) {
 834     return NS_OK;
 835   }
 836
 837   if (XRE_IsContentProcess() || XRE_IsGPUProcess()) {
 838     // Use the cached data received from the parent process.
 839     MOZ_ASSERT(sFeatureStatus);
 840     bool success = false;
 841     for (const auto& fs : *sFeatureStatus) {
 842       if (fs.feature() == aFeature) {
 843         aFailureId = fs.failureId();
 844         *aStatus = fs.status();
 845         success = true;
 846         break;
 847       }
 848     }
 849     return success ? NS_OK : NS_ERROR_FAILURE;
 850   }
 851
 852   nsString version;
 853   nsTArray<GfxDriverInfo> driverInfo;
 854   nsresult rv =
 855       GetFeatureStatusImpl(aFeature, aStatus, version, driverInfo, aFailureId);
 856   return rv;
 857 }
 858
 859 nsTArray<gfx::GfxInfoFeatureStatus> GfxInfoBase::GetAllFeatures() {
 860   MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
 861   if (!sFeatureStatus) {
 862     InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>());
 863     for (int32_t i = 1; i <= nsIGfxInfo::FEATURE_MAX_VALUE; ++i) {
 864       int32_t status = 0;
 865       nsAutoCString failureId;
 866       GetFeatureStatus(i, failureId, &status);
 867       gfx::GfxInfoFeatureStatus gfxFeatureStatus;
 868       gfxFeatureStatus.feature() = i;
 869       gfxFeatureStatus.status() = status;
 870       gfxFeatureStatus.failureId() = failureId;
 871       sFeatureStatus->AppendElement(gfxFeatureStatus);
 872     }
 873   }
 874
 875   nsTArray<gfx::GfxInfoFeatureStatus> features;
 876   for (const auto& status : *sFeatureStatus) {
 877     gfx::GfxInfoFeatureStatus copy = status;
 878     features.AppendElement(copy);
 879   }
 880   return features;
 881 }
 882
 883 inline bool MatchingAllowStatus(int32_t aStatus) {
 884   switch (aStatus) {
 885     case nsIGfxInfo::FEATURE_ALLOW_ALWAYS:
 886     case nsIGfxInfo::FEATURE_ALLOW_QUALIFIED:
 887       return true;
 888     default:
 889       return false;
 890   }
 891 }
 892
 893 // Matching OS go somewhat beyond the simple equality check because of the
 894 // "All Windows" and "All OS X" variations.
 895 //
 896 // aBlockedOS is describing the system(s) we are trying to block.
 897 // aSystemOS is describing the system we are running on.
 898 //
 899 // aSystemOS should not be "Windows" or "OSX" - it should be set to
 900 // a particular version instead.
 901 // However, it is valid for aBlockedOS to be one of those generic values,
 902 // as we could be blocking all of the versions.
 903 inline bool MatchingOperatingSystems(OperatingSystem aBlockedOS,
 904                                      OperatingSystem aSystemOS,
 905                                      uint32_t aSystemOSBuild) {
 906   MOZ_ASSERT(aSystemOS != OperatingSystem::Windows &&
 907              aSystemOS != OperatingSystem::OSX);
 908
 909   // If the block entry OS is unknown, it doesn't match
 910   if (aBlockedOS == OperatingSystem::Unknown) {
 911     return false;
 912   }
 913
 914 #if defined(XP_WIN)
 915   if (aBlockedOS == OperatingSystem::Windows) {
 916     // We do want even "unknown" aSystemOS to fall under "all windows"
 917     return true;
 918   }
 919
 920   constexpr uint32_t kMinWin10BuildNumber = 18362;
 921   if (aBlockedOS == OperatingSystem::RecentWindows10 &&
 922       aSystemOS == OperatingSystem::Windows10) {
 923     // For allowlist purposes, we sometimes want to restrict to only recent
 924     // versions of Windows 10. This is a bit of a kludge but easier than adding
 925     // complicated blocklist infrastructure for build ID comparisons like driver
 926     // versions.
 927     return aSystemOSBuild >= kMinWin10BuildNumber;
 928   }
 929
 930   if (aBlockedOS == OperatingSystem::NotRecentWindows10) {
 931     if (aSystemOS == OperatingSystem::Windows10) {
 932       return aSystemOSBuild < kMinWin10BuildNumber;
 933     } else {
 934       return true;
 935     }
 936   }
 937 #endif
 938
 939 #if defined(XP_MACOSX)
 940   if (aBlockedOS == OperatingSystem::OSX) {
 941     // We do want even "unknown" aSystemOS to fall under "all OS X"
 942     return true;
 943   }
 944 #endif
 945
 946   return aSystemOS == aBlockedOS;
 947 }
 948
 949 inline bool MatchingBattery(BatteryStatus aBatteryStatus, bool aHasBattery) {
 950   switch (aBatteryStatus) {
 951     case BatteryStatus::All:
 952       return true;
 953     case BatteryStatus::None:
 954       return !aHasBattery;
 955     case BatteryStatus::Present:
 956       return aHasBattery;
 957   }
 958
 959   MOZ_ASSERT_UNREACHABLE("bad battery status");
 960   return false;
 961 }
 962
 963 inline bool MatchingScreenSize(ScreenSizeStatus aScreenStatus,
 964                                int64_t aScreenPixels) {
 965   constexpr int64_t kMaxSmallPixels = 2304000;   // 1920x1200
 966   constexpr int64_t kMaxMediumPixels = 4953600;  // 3440x1440
 967
 968   switch (aScreenStatus) {
 969     case ScreenSizeStatus::All:
 970       return true;
 971     case ScreenSizeStatus::Small:
 972       return aScreenPixels <= kMaxSmallPixels;
 973     case ScreenSizeStatus::SmallAndMedium:
 974       return aScreenPixels <= kMaxMediumPixels;
 975     case ScreenSizeStatus::Medium:
 976       return aScreenPixels > kMaxSmallPixels &&
 977              aScreenPixels <= kMaxMediumPixels;
 978     case ScreenSizeStatus::MediumAndLarge:
 979       return aScreenPixels > kMaxSmallPixels;
 980     case ScreenSizeStatus::Large:
 981       return aScreenPixels > kMaxMediumPixels;
 982   }
 983
 984   MOZ_ASSERT_UNREACHABLE("bad screen status");
 985   return false;
 986 }
 987
 988 int32_t GfxInfoBase::FindBlocklistedDeviceInList(
 989     const nsTArray<GfxDriverInfo>& info, nsAString& aSuggestedVersion,
 990     int32_t aFeature, nsACString& aFailureId, OperatingSystem os,
 991     bool aForAllowing) {
 992   int32_t status = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 993
 994   // Some properties are not available on all platforms.
 995   nsAutoString windowProtocol;
 996   nsresult rv = GetWindowProtocol(windowProtocol);
 997   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 998     return 0;
 999   }
1000
1001   bool hasBattery = false;
1002   rv = GetHasBattery(&hasBattery);
1003   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
1004     return 0;
1005   }
1006
1007   uint32_t osBuild = OperatingSystemBuild();
1008
1009   // Get the adapters once then reuse below
1010   nsAutoString adapterVendorID[2];
1011   nsAutoString adapterDeviceID[2];
1012   nsAutoString adapterDriverVendor[2];
1013   nsAutoString adapterDriverVersionString[2];
1014   bool adapterInfoFailed[2];
1015
1016   adapterInfoFailed[0] =
1017       (NS_FAILED(GetAdapterVendorID(adapterVendorID[0])) ||
1018        NS_FAILED(GetAdapterDeviceID(adapterDeviceID[0])) ||
1019        NS_FAILED(GetAdapterDriverVendor(adapterDriverVendor[0])) ||
1020        NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString[0])));
1021   adapterInfoFailed[1] =
1022       (NS_FAILED(GetAdapterVendorID2(adapterVendorID[1])) ||
1023        NS_FAILED(GetAdapterDeviceID2(adapterDeviceID[1])) ||
1024        NS_FAILED(GetAdapterDriverVendor2(adapterDriverVendor[1])) ||
1025        NS_FAILED(GetAdapterDriverVersion2(adapterDriverVersionString[1])));
1026   // No point in going on if we don't have adapter info
1027   if (adapterInfoFailed[0] && adapterInfoFailed[1]) {
1028     return 0;
1029   }
1030
1031 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
1032   uint64_t driverVersion[2] = {0, 0};
1033   if (!adapterInfoFailed[0]) {
1034     ParseDriverVersion(adapterDriverVersionString[0], &driverVersion[0]);
1035   }
1036   if (!adapterInfoFailed[1]) {
1037     ParseDriverVersion(adapterDriverVersionString[1], &driverVersion[1]);
1038   }
1039 #endif
1040
1041   uint32_t i = 0;
1042   for (; i < info.Length(); i++) {
1043     // If the status is FEATURE_ALLOW_*, then it is for the allowlist, not
1044     // blocklisting. Only consider entries for our search mode.
1045     if (MatchingAllowStatus(info[i].mFeatureStatus) != aForAllowing) {
1046       continue;
1047     }
1048
1049     // If we don't have the info for this GPU, no need to check further.
1050     // It is unclear that we would ever have a mixture of 1st and 2nd
1051     // GPU, but leaving the code in for that possibility for now.
1052     // (Actually, currently mGpu2 will never be true, so this can
1053     // be optimized out.)
1054     uint32_t infoIndex = info[i].mGpu2 ? 1 : 0;
1055     if (adapterInfoFailed[infoIndex]) {
1056       continue;
1057     }
1058
1059     // Do the operating system check first, no point in getting the driver
1060     // info if we won't need to use it.
1061     if (!MatchingOperatingSystems(info[i].mOperatingSystem, os, osBuild)) {
1062       continue;
1063     }
1064
1065     if (info[i].mOperatingSystemVersion &&
1066         info[i].mOperatingSystemVersion != OperatingSystemVersion()) {
1067       continue;
1068     }
1069
1070     if (!MatchingBattery(info[i].mBattery, hasBattery)) {
1071       continue;
1072     }
1073
1074     if (!MatchingScreenSize(info[i].mScreen, mScreenPixels)) {
1075       continue;
1076     }
1077
1078     if (!DoesWindowProtocolMatch(info[i].mWindowProtocol, windowProtocol)) {
1079       continue;
1080     }
1081
1082     if (!DoesVendorMatch(info[i].mAdapterVendor, adapterVendorID[infoIndex])) {
1083       continue;
1084     }
1085
1086     if (!DoesDriverVendorMatch(info[i].mDriverVendor,
1087                                adapterDriverVendor[infoIndex])) {
1088       continue;
1089     }
1090
1091     if (info[i].mDevices && !info[i].mDevices->IsEmpty()) {
1092       nsresult rv = info[i].mDevices->Contains(adapterDeviceID[infoIndex]);
1093       if (rv == NS_ERROR_NOT_AVAILABLE) {
1094         // Not found
1095         continue;
1096       }
1097       if (rv != NS_OK) {
1098         // Failed to search, allowlist should not match, blocklist should match
1099         // for safety reasons
1100         if (aForAllowing) {
1101           continue;
1102         }
1103         break;
1104       }
1105     }
1106
1107     bool match = false;
1108
1109     if (!info[i].mHardware.IsEmpty() && !info[i].mHardware.Equals(Hardware())) {
1110       continue;
1111     }
1112     if (!info[i].mModel.IsEmpty() && !info[i].mModel.Equals(Model())) {
1113       continue;
1114     }
1115     if (!info[i].mProduct.IsEmpty() && !info[i].mProduct.Equals(Product())) {
1116       continue;
1117     }
1118     if (!info[i].mManufacturer.IsEmpty() &&
1119         !info[i].mManufacturer.Equals(Manufacturer())) {
1120       continue;
1121     }
1122
1123 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
1124     switch (info[i].mComparisonOp) {
1125       case DRIVER_LESS_THAN:
1126         match = driverVersion[infoIndex] < info[i].mDriverVersion;
1127         break;
1128       case DRIVER_BUILD_ID_LESS_THAN:
1129         match = (driverVersion[infoIndex] & 0xFFFF) < info[i].mDriverVersion;
1130         break;
1131       case DRIVER_LESS_THAN_OR_EQUAL:
1132         match = driverVersion[infoIndex] <= info[i].mDriverVersion;
1133         break;
1134       case DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL:
1135         match = (driverVersion[infoIndex] & 0xFFFF) <= info[i].mDriverVersion;
1136         break;
1137       case DRIVER_GREATER_THAN:
1138         match = driverVersion[infoIndex] > info[i].mDriverVersion;
1139         break;
1140       case DRIVER_GREATER_THAN_OR_EQUAL:
1141         match = driverVersion[infoIndex] >= info[i].mDriverVersion;
1142         break;
1143       case DRIVER_EQUAL:
1144         match = driverVersion[infoIndex] == info[i].mDriverVersion;
1145         break;
1146       case DRIVER_NOT_EQUAL:
1147         match = driverVersion[infoIndex] != info[i].mDriverVersion;
1148         break;
1149       case DRIVER_BETWEEN_EXCLUSIVE:
1150         match = driverVersion[infoIndex] > info[i].mDriverVersion &&
1151                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1152         break;
1153       case DRIVER_BETWEEN_INCLUSIVE:
1154         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1155                 driverVersion[infoIndex] <= info[i].mDriverVersionMax;
1156         break;
1157       case DRIVER_BETWEEN_INCLUSIVE_START:
1158         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1159                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1160         break;
1161       case DRIVER_COMPARISON_IGNORED:
1162         // We don't have a comparison op, so we match everything.
1163         match = true;
1164         break;
1165       default:
1166         NS_WARNING("Bogus op in GfxDriverInfo");
1167         break;
1168     }
1169 #else
1170     // We don't care what driver version it was. We only check OS version and if
1171     // the device matches.
1172     match = true;
1173 #endif
1174
1175     if (match || info[i].mDriverVersion == GfxDriverInfo::allDriverVersions) {
1176       if (info[i].mFeature == GfxDriverInfo::allFeatures ||
1177           info[i].mFeature == aFeature) {
1178         status = info[i].mFeatureStatus;
1179         if (!info[i].mRuleId.IsEmpty()) {
1180           aFailureId = info[i].mRuleId.get();
1181         } else {
1182           aFailureId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID";
1183         }
1184         break;
1185       }
1186     }
1187   }
1188
1189 #if defined(XP_WIN)
1190   // As a very special case, we block D2D on machines with an NVidia 310M GPU
1191   // as either the primary or secondary adapter.  D2D is also blocked when the
1192   // NV 310M is the primary adapter (using the standard blocklisting mechanism).
1193   // If the primary GPU already matched something in the blocklist then we
1194   // ignore this special rule.  See bug 1008759.
1195   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN &&
1196       (aFeature == nsIGfxInfo::FEATURE_DIRECT2D)) {
1197     if (!adapterInfoFailed[1]) {
1198       nsAString& nvVendorID =
1199           (nsAString&)GfxDriverInfo::GetDeviceVendor(DeviceVendor::NVIDIA);
1200       const nsString nv310mDeviceId = u"0x0A70"_ns;
1201       if (nvVendorID.Equals(adapterVendorID[1],
1202                             nsCaseInsensitiveStringComparator) &&
1203           nv310mDeviceId.Equals(adapterDeviceID[1],
1204                                 nsCaseInsensitiveStringComparator)) {
1205         status = nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
1206         aFailureId = "FEATURE_FAILURE_D2D_NV310M_BLOCK";
1207       }
1208     }
1209   }
1210
1211   // Depends on Windows driver versioning. We don't pass a GfxDriverInfo object
1212   // back to the Windows handler, so we must handle this here.
1213   if (status == FEATURE_BLOCKED_DRIVER_VERSION) {
1214     if (info[i].mSuggestedVersion) {
1215       aSuggestedVersion.AppendPrintf("%s", info[i].mSuggestedVersion);
1216     } else if (info[i].mComparisonOp == DRIVER_LESS_THAN &&
1217                info[i].mDriverVersion != GfxDriverInfo::allDriverVersions) {
1218       aSuggestedVersion.AppendPrintf(
1219           "%lld.%lld.%lld.%lld",
1220           (info[i].mDriverVersion & 0xffff000000000000) >> 48,
1221           (info[i].mDriverVersion & 0x0000ffff00000000) >> 32,
1222           (info[i].mDriverVersion & 0x00000000ffff0000) >> 16,
1223           (info[i].mDriverVersion & 0x000000000000ffff));
1224     }
1225   }
1226 #endif
1227
1228   return status;
1229 }
1230
1231 void GfxInfoBase::SetFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>&& aFS) {
1232   MOZ_ASSERT(!sFeatureStatus);
1233   InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>(std::move(aFS)));
1234 }
1235
1236 bool GfxInfoBase::DoesWindowProtocolMatch(
1237     const nsAString& aBlocklistWindowProtocol,
1238     const nsAString& aWindowProtocol) {
1239   return aBlocklistWindowProtocol.Equals(aWindowProtocol,
1240                                          nsCaseInsensitiveStringComparator) ||
1241          aBlocklistWindowProtocol.Equals(
1242              GfxDriverInfo::GetWindowProtocol(WindowProtocol::All),
1243              nsCaseInsensitiveStringComparator);
1244 }
1245
1246 bool GfxInfoBase::DoesVendorMatch(const nsAString& aBlocklistVendor,
1247                                   const nsAString& aAdapterVendor) {
1248   return aBlocklistVendor.Equals(aAdapterVendor,
1249                                  nsCaseInsensitiveStringComparator) ||
1250          aBlocklistVendor.Equals(
1251              GfxDriverInfo::GetDeviceVendor(DeviceVendor::All),
1252              nsCaseInsensitiveStringComparator);
1253 }
1254
1255 bool GfxInfoBase::DoesDriverVendorMatch(const nsAString& aBlocklistVendor,
1256                                         const nsAString& aDriverVendor) {
1257   return aBlocklistVendor.Equals(aDriverVendor,
1258                                  nsCaseInsensitiveStringComparator) ||
1259          aBlocklistVendor.Equals(
1260              GfxDriverInfo::GetDriverVendor(DriverVendor::All),
1261              nsCaseInsensitiveStringComparator);
1262 }
1263
1264 bool GfxInfoBase::IsFeatureAllowlisted(int32_t aFeature) const {
1265   return aFeature == nsIGfxInfo::FEATURE_VIDEO_OVERLAY ||
1266          aFeature == nsIGfxInfo::FEATURE_HW_DECODED_VIDEO_ZERO_COPY;
1267 }
1268
1269 nsresult GfxInfoBase::GetFeatureStatusImpl(
1270     int32_t aFeature, int32_t* aStatus, nsAString& aSuggestedVersion,
1271     const nsTArray<GfxDriverInfo>& aDriverInfo, nsACString& aFailureId,
1272     OperatingSystem* aOS /* = nullptr */) {
1273   if (aFeature <= 0) {
1274     gfxWarning() << "Invalid feature <= 0";
1275     return NS_OK;
1276   }
1277
1278   if (*aStatus != nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1279     // Terminate now with the status determined by the derived type (OS-specific
1280     // code).
1281     return NS_OK;
1282   }
1283
1284   if (sShutdownOccurred) {
1285     // This is futile; we've already commenced shutdown and our blocklists have
1286     // been deleted. We may want to look into resurrecting the blocklist instead
1287     // but for now, just don't even go there.
1288     return NS_OK;
1289   }
1290
1291   // Ensure any additional initialization required is complete.
1292   GetData();
1293
1294   // If an operating system was provided by the derived GetFeatureStatusImpl,
1295   // grab it here. Otherwise, the OS is unknown.
1296   OperatingSystem os = (aOS ? *aOS : OperatingSystem::Unknown);
1297
1298   nsAutoString adapterVendorID;
1299   nsAutoString adapterDeviceID;
1300   nsAutoString adapterDriverVersionString;
1301   if (NS_FAILED(GetAdapterVendorID(adapterVendorID)) ||
1302       NS_FAILED(GetAdapterDeviceID(adapterDeviceID)) ||
1303       NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString))) {
1304     if (OnlyAllowFeatureOnKnownConfig(aFeature)) {
1305       aFailureId = "FEATURE_FAILURE_CANT_RESOLVE_ADAPTER";
1306       *aStatus = nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
1307     } else {
1308       *aStatus = nsIGfxInfo::FEATURE_STATUS_OK;
1309     }
1310     return NS_OK;
1311   }
1312
1313   // We only check either the given blocklist, or the static list, as given.
1314   int32_t status;
1315   if (aDriverInfo.Length()) {
1316     status =
1317         FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion, aFeature,
1318                                     aFailureId, os, /* aForAllowing */ false);
1319   } else {
1320     if (!sDriverInfo) {
1321       sDriverInfo = new nsTArray<GfxDriverInfo>();
1322     }
1323     status = FindBlocklistedDeviceInList(GetGfxDriverInfo(), aSuggestedVersion,
1324                                          aFeature, aFailureId, os,
1325                                          /* aForAllowing */ false);
1326   }
1327
1328   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1329     if (IsFeatureAllowlisted(aFeature)) {
1330       // This feature is actually using the allowlist; that means after we pass
1331       // the blocklist to prevent us explicitly from getting the feature, we now
1332       // need to check the allowlist to ensure we are allowed to get it in the
1333       // first place.
1334       if (aDriverInfo.Length()) {
1335         status = FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion,
1336                                              aFeature, aFailureId, os,
1337                                              /* aForAllowing */ true);
1338       } else {
1339         status = FindBlocklistedDeviceInList(
1340             GetGfxDriverInfo(), aSuggestedVersion, aFeature, aFailureId, os,
1341             /* aForAllowing */ true);
1342       }
1343
1344       if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1345         status = nsIGfxInfo::FEATURE_DENIED;
1346       }
1347     } else {
1348       // It's now done being processed. It's safe to set the status to
1349       // STATUS_OK.
1350       status = nsIGfxInfo::FEATURE_STATUS_OK;
1351     }
1352   }
1353
1354   *aStatus = status;
1355   return NS_OK;
1356 }
1357
1358 NS_IMETHODIMP
1359 GfxInfoBase::GetFeatureSuggestedDriverVersion(int32_t aFeature,
1360                                               nsAString& aVersion) {
1361   nsCString version;
1362   if (GetPrefValueForDriverVersion(version)) {
1363     aVersion = NS_ConvertASCIItoUTF16(version);
1364     return NS_OK;
1365   }
1366
1367   int32_t status;
1368   nsCString discardFailureId;
1369   nsTArray<GfxDriverInfo> driverInfo;
1370   return GetFeatureStatusImpl(aFeature, &status, aVersion, driverInfo,
1371                               discardFailureId);
1372 }
1373
1374 void GfxInfoBase::EvaluateDownloadedBlocklist(
1375     nsTArray<GfxDriverInfo>& aDriverInfo) {
1376   // If the list is empty, then we don't actually want to call
1377   // GetFeatureStatusImpl since we will use the static list instead. In that
1378   // case, all we want to do is make sure the pref is removed.
1379   if (aDriverInfo.IsEmpty()) {
1380     gfxCriticalNoteOnce << "Evaluate empty downloaded blocklist";
1381     return;
1382   }
1383
1384   OperatingSystem os = GetOperatingSystem();
1385
1386   // For every feature we know about, we evaluate whether this blocklist has a
1387   // non-STATUS_OK status. If it does, we set the pref we evaluate in
1388   // GetFeatureStatus above, so we don't need to hold on to this blocklist
1389   // anywhere permanent.
1390   for (int feature = 1; feature <= nsIGfxInfo::FEATURE_MAX_VALUE; ++feature) {
1391     int32_t status = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
1392     nsCString failureId;
1393     nsAutoString suggestedVersion;
1394
1395     // Note that we are careful to call the base class method since we only want
1396     // to evaluate the downloadable blocklist for these prefs.
1397     MOZ_ALWAYS_TRUE(NS_SUCCEEDED(GfxInfoBase::GetFeatureStatusImpl(
1398         feature, &status, suggestedVersion, aDriverInfo, failureId, &os)));
1399
1400     switch (status) {
1401       default:
1402         MOZ_FALLTHROUGH_ASSERT("Unhandled feature status!");
1403       case nsIGfxInfo::FEATURE_STATUS_UNKNOWN:
1404         // This may be returned during shutdown or for invalid features.
1405       case nsIGfxInfo::FEATURE_ALLOW_ALWAYS:
1406       case nsIGfxInfo::FEATURE_ALLOW_QUALIFIED:
1407       case nsIGfxInfo::FEATURE_DENIED:
1408         // We cannot use the downloadable blocklist to control the allowlist.
1409         // If a feature is allowlisted, then we should also ignore DENIED
1410         // statuses from GetFeatureStatusImpl because we don't check the
1411         // static list when and this is an expected value. If we wish to
1412         // override the allowlist, it is as simple as creating a normal
1413         // blocklist rule with a BLOCKED* status code.
1414       case nsIGfxInfo::FEATURE_STATUS_OK:
1415         RemovePrefForFeature(feature);
1416         break;
1417
1418       case nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION:
1419         if (!suggestedVersion.IsEmpty()) {
1420           SetPrefValueForDriverVersion(suggestedVersion);
1421         } else {
1422           RemovePrefForDriverVersion();
1423         }
1424         [[fallthrough]];
1425
1426       case nsIGfxInfo::FEATURE_BLOCKED_MISMATCHED_VERSION:
1427       case nsIGfxInfo::FEATURE_BLOCKED_DEVICE:
1428       case nsIGfxInfo::FEATURE_DISCOURAGED:
1429       case nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION:
1430       case nsIGfxInfo::FEATURE_BLOCKED_PLATFORM_TEST:
1431         SetPrefValueForFeature(feature, status, failureId);
1432         break;
1433     }
1434   }
1435 }
1436
1437 NS_IMETHODIMP_(void)
1438 GfxInfoBase::LogFailure(const nsACString& failure) {
1439   // gfxCriticalError has a mutex lock of its own, so we may not actually
1440   // need this lock. ::GetFailures() accesses the data but the LogForwarder
1441   // will not return the copy of the logs unless it can get the same lock
1442   // that gfxCriticalError uses.  Still, that is so much of an implementation
1443   // detail that it's nicer to just add an extra lock here and in
1444   // ::GetFailures()
1445   MutexAutoLock lock(mMutex);
1446
1447   // By default, gfxCriticalError asserts; make it not assert in this case.
1448   gfxCriticalError(CriticalLog::DefaultOptions(false))
1449       << "(LF) " << failure.BeginReading();
1450 }
1451
1452 NS_IMETHODIMP GfxInfoBase::GetFailures(nsTArray<int32_t>& indices,
1453                                        nsTArray<nsCString>& failures) {
1454   MutexAutoLock lock(mMutex);
1455
1456   LogForwarder* logForwarder = Factory::GetLogForwarder();
1457   if (!logForwarder) {
1458     return NS_ERROR_UNEXPECTED;
1459   }
1460
1461   // There are two string copies in this method, starting with this one. We are
1462   // assuming this is not a big deal, as the size of the array should be small
1463   // and the strings in it should be small as well (the error messages in the
1464   // code.)  The second copy happens with the AppendElement() calls.
1465   // Technically, we don't need the mutex lock after the StringVectorCopy()
1466   // call.
1467   LoggingRecord loggedStrings = logForwarder->LoggingRecordCopy();
1468   LoggingRecord::const_iterator it;
1469   for (it = loggedStrings.begin(); it != loggedStrings.end(); ++it) {
1470     failures.AppendElement(nsDependentCSubstring(std::get<1>(*it).c_str(),
1471                                                  std::get<1>(*it).size()));
1472     indices.AppendElement(std::get<0>(*it));
1473   }
1474
1475   return NS_OK;
1476 }
1477
1478 nsTArray<GfxInfoCollectorBase*>* sCollectors;
1479
1480 static void InitCollectors() {
1481   if (!sCollectors) sCollectors = new nsTArray<GfxInfoCollectorBase*>;
1482 }
1483
1484 nsresult GfxInfoBase::GetInfo(JSContext* aCx,
1485                               JS::MutableHandle<JS::Value> aResult) {
1486   InitCollectors();
1487   InfoObject obj(aCx);
1488
1489   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1490     (*sCollectors)[i]->GetInfo(obj);
1491   }
1492
1493   // Some example property definitions
1494   // obj.DefineProperty("wordCacheSize", gfxTextRunWordCache::Count());
1495   // obj.DefineProperty("renderer", mRendererIDsString);
1496   // obj.DefineProperty("five", 5);
1497
1498   if (!obj.mOk) {
1499     return NS_ERROR_FAILURE;
1500   }
1501
1502   aResult.setObject(*obj.mObj);
1503   return NS_OK;
1504 }
1505
1506 nsAutoCString gBaseAppVersion;
1507
1508 const nsCString& GfxInfoBase::GetApplicationVersion() {
1509   static bool versionInitialized = false;
1510   if (!versionInitialized) {
1511     // If we fail to get the version, we will not try again.
1512     versionInitialized = true;
1513
1514     // Get the version from xpcom/system/nsIXULAppInfo.idl
1515     nsCOMPtr<nsIXULAppInfo> app = do_GetService("@mozilla.org/xre/app-info;1");
1516     if (app) {
1517       app->GetVersion(gBaseAppVersion);
1518     }
1519   }
1520   return gBaseAppVersion;
1521 }
1522
1523 /* static */ bool GfxInfoBase::OnlyAllowFeatureOnKnownConfig(int32_t aFeature) {
1524   switch (aFeature) {
1525     // The GPU process doesn't need hardware acceleration and can run on
1526     // devices that we normally block from not being on our whitelist.
1527     case nsIGfxInfo::FEATURE_GPU_PROCESS:
1528       return kIsAndroid;
1529     // We can mostly assume that ANGLE will work
1530     case nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE:
1531     // Remote WebGL is needed for Win32k Lockdown, so it should be enabled
1532     // regardless of HW support or not
1533     case nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS:
1534     // Backdrop filter should generally work, especially if we fall back to
1535     // Software WebRender because of an unknown vendor.
1536     case nsIGfxInfo::FEATURE_BACKDROP_FILTER:
1537       return false;
1538     default:
1539       return true;
1540   }
1541 }
1542
1543 void GfxInfoBase::AddCollector(GfxInfoCollectorBase* collector) {
1544   InitCollectors();
1545   sCollectors->AppendElement(collector);
1546 }
1547
1548 void GfxInfoBase::RemoveCollector(GfxInfoCollectorBase* collector) {
1549   InitCollectors();
1550   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1551     if ((*sCollectors)[i] == collector) {
1552       sCollectors->RemoveElementAt(i);
1553       break;
1554     }
1555   }
1556   if (sCollectors->IsEmpty()) {
1557     delete sCollectors;
1558     sCollectors = nullptr;
1559   }
1560 }
1561
1562 static void AppendMonitor(JSContext* aCx, widget::Screen& aScreen,
1563                           JS::Handle<JSObject*> aOutArray, int32_t aIndex) {
1564   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1565
1566   auto screenSize = aScreen.GetRect().Size();
1567
1568   JS::Rooted<JS::Value> screenWidth(aCx, JS::Int32Value(screenSize.width));
1569   JS_SetProperty(aCx, obj, "screenWidth", screenWidth);
1570
1571   JS::Rooted<JS::Value> screenHeight(aCx, JS::Int32Value(screenSize.height));
1572   JS_SetProperty(aCx, obj, "screenHeight", screenHeight);
1573
1574   // XXX Just preserving behavior since this is exposed to telemetry, but we
1575   // could consider including this everywhere.
1576 #ifdef XP_MACOSX
1577   JS::Rooted<JS::Value> scale(
1578       aCx, JS::NumberValue(aScreen.GetContentsScaleFactor()));
1579   JS_SetProperty(aCx, obj, "scale", scale);
1580 #endif
1581
1582 #ifdef XP_WIN
1583   JS::Rooted<JS::Value> refreshRate(aCx,
1584                                     JS::Int32Value(aScreen.GetRefreshRate()));
1585   JS_SetProperty(aCx, obj, "refreshRate", refreshRate);
1586
1587   JS::Rooted<JS::Value> pseudoDisplay(
1588       aCx, JS::BooleanValue(aScreen.GetIsPseudoDisplay()));
1589   JS_SetProperty(aCx, obj, "pseudoDisplay", pseudoDisplay);
1590 #endif
1591
1592   JS::Rooted<JS::Value> element(aCx, JS::ObjectValue(*obj));
1593   JS_SetElement(aCx, aOutArray, aIndex, element);
1594 }
1595
1596 nsresult GfxInfoBase::FindMonitors(JSContext* aCx,
1597                                    JS::Handle<JSObject*> aOutArray) {
1598   int32_t index = 0;
1599   auto& sm = ScreenManager::GetSingleton();
1600   for (auto& screen : sm.CurrentScreenList()) {
1601     AppendMonitor(aCx, *screen, aOutArray, index++);
1602   }
1603
1604   if (index == 0) {
1605     // Ensure we return at least one monitor, this is needed for xpcshell.
1606     RefPtr<Screen> screen = sm.GetPrimaryScreen();
1607     AppendMonitor(aCx, *screen, aOutArray, index++);
1608   }
1609
1610   return NS_OK;
1611 }
1612
1613 NS_IMETHODIMP
1614 GfxInfoBase::GetMonitors(JSContext* aCx, JS::MutableHandle<JS::Value> aResult) {
1615   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1616
1617   nsresult rv = FindMonitors(aCx, array);
1618   if (NS_FAILED(rv)) {
1619     return rv;
1620   }
1621
1622   aResult.setObject(*array);
1623   return NS_OK;
1624 }
1625
1626 static inline bool SetJSPropertyString(JSContext* aCx,
1627                                        JS::Handle<JSObject*> aObj,
1628                                        const char* aProp, const char* aString) {
1629   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, aString));
1630   if (!str) {
1631     return false;
1632   }
1633
1634   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1635   return JS_SetProperty(aCx, aObj, aProp, val);
1636 }
1637
1638 template <typename T>
1639 static inline bool AppendJSElement(JSContext* aCx, JS::Handle<JSObject*> aObj,
1640                                    const T& aValue) {
1641   uint32_t index;
1642   if (!JS::GetArrayLength(aCx, aObj, &index)) {
1643     return false;
1644   }
1645   return JS_SetElement(aCx, aObj, index, aValue);
1646 }
1647
1648 nsresult GfxInfoBase::GetFeatures(JSContext* aCx,
1649                                   JS::MutableHandle<JS::Value> aOut) {
1650   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1651   if (!obj) {
1652     return NS_ERROR_OUT_OF_MEMORY;
1653   }
1654   aOut.setObject(*obj);
1655
1656   layers::LayersBackend backend =
1657       gfxPlatform::Initialized()
1658           ? gfxPlatform::GetPlatform()->GetCompositorBackend()
1659           : layers::LayersBackend::LAYERS_NONE;
1660   const char* backendName = layers::GetLayersBackendName(backend);
1661   SetJSPropertyString(aCx, obj, "compositor", backendName);
1662
1663   // If graphics isn't initialized yet, just stop now.
1664   if (!gfxPlatform::Initialized()) {
1665     return NS_OK;
1666   }
1667
1668   DescribeFeatures(aCx, obj);
1669   return NS_OK;
1670 }
1671
1672 nsresult GfxInfoBase::GetFeatureLog(JSContext* aCx,
1673                                     JS::MutableHandle<JS::Value> aOut) {
1674   JS::Rooted<JSObject*> containerObj(aCx, JS_NewPlainObject(aCx));
1675   if (!containerObj) {
1676     return NS_ERROR_OUT_OF_MEMORY;
1677   }
1678   aOut.setObject(*containerObj);
1679
1680   JS::Rooted<JSObject*> featureArray(aCx, JS::NewArrayObject(aCx, 0));
1681   if (!featureArray) {
1682     return NS_ERROR_OUT_OF_MEMORY;
1683   }
1684
1685   // Collect features.
1686   gfxConfig::ForEachFeature([&](const char* aName, const char* aDescription,
1687                                 FeatureState& aFeature) -> void {
1688     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1689     if (!obj) {
1690       return;
1691     }
1692     if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1693         !SetJSPropertyString(aCx, obj, "description", aDescription) ||
1694         !SetJSPropertyString(aCx, obj, "status",
1695                              FeatureStatusToString(aFeature.GetValue()))) {
1696       return;
1697     }
1698
1699     JS::Rooted<JS::Value> log(aCx);
1700     if (!BuildFeatureStateLog(aCx, aFeature, &log)) {
1701       return;
1702     }
1703     if (!JS_SetProperty(aCx, obj, "log", log)) {
1704       return;
1705     }
1706
1707     if (!AppendJSElement(aCx, featureArray, obj)) {
1708       return;
1709     }
1710   });
1711
1712   JS::Rooted<JSObject*> fallbackArray(aCx, JS::NewArrayObject(aCx, 0));
1713   if (!fallbackArray) {
1714     return NS_ERROR_OUT_OF_MEMORY;
1715   }
1716
1717   // Collect fallbacks.
1718   gfxConfig::ForEachFallback(
1719       [&](const char* aName, const char* aMessage) -> void {
1720         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1721         if (!obj) {
1722           return;
1723         }
1724
1725         if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1726             !SetJSPropertyString(aCx, obj, "message", aMessage)) {
1727           return;
1728         }
1729
1730         if (!AppendJSElement(aCx, fallbackArray, obj)) {
1731           return;
1732         }
1733       });
1734
1735   JS::Rooted<JS::Value> val(aCx);
1736
1737   val = JS::ObjectValue(*featureArray);
1738   JS_SetProperty(aCx, containerObj, "features", val);
1739
1740   val = JS::ObjectValue(*fallbackArray);
1741   JS_SetProperty(aCx, containerObj, "fallbacks", val);
1742
1743   return NS_OK;
1744 }
1745
1746 bool GfxInfoBase::BuildFeatureStateLog(JSContext* aCx,
1747                                        const FeatureState& aFeature,
1748                                        JS::MutableHandle<JS::Value> aOut) {
1749   JS::Rooted<JSObject*> log(aCx, JS::NewArrayObject(aCx, 0));
1750   if (!log) {
1751     return false;
1752   }
1753   aOut.setObject(*log);
1754
1755   aFeature.ForEachStatusChange([&](const char* aType, FeatureStatus aStatus,
1756                                    const char* aMessage,
1757                                    const nsCString& aFailureId) -> void {
1758     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1759     if (!obj) {
1760       return;
1761     }
1762
1763     if (!SetJSPropertyString(aCx, obj, "type", aType) ||
1764         !SetJSPropertyString(aCx, obj, "status",
1765                              FeatureStatusToString(aStatus)) ||
1766         (!aFailureId.IsEmpty() &&
1767          !SetJSPropertyString(aCx, obj, "failureId", aFailureId.get())) ||
1768         (aMessage && !SetJSPropertyString(aCx, obj, "message", aMessage))) {
1769       return;
1770     }
1771
1772     if (!AppendJSElement(aCx, log, obj)) {
1773       return;
1774     }
1775   });
1776
1777   return true;
1778 }
1779
1780 void GfxInfoBase::DescribeFeatures(JSContext* aCx, JS::Handle<JSObject*> aObj) {
1781   JS::Rooted<JSObject*> obj(aCx);
1782
1783   gfx::FeatureState& hwCompositing =
1784       gfxConfig::GetFeature(gfx::Feature::HW_COMPOSITING);
1785   InitFeatureObject(aCx, aObj, "hwCompositing", hwCompositing, &obj);
1786
1787   gfx::FeatureState& gpuProcess =
1788       gfxConfig::GetFeature(gfx::Feature::GPU_PROCESS);
1789   InitFeatureObject(aCx, aObj, "gpuProcess", gpuProcess, &obj);
1790
1791   gfx::FeatureState& webrender = gfxConfig::GetFeature(gfx::Feature::WEBRENDER);
1792   InitFeatureObject(aCx, aObj, "webrender", webrender, &obj);
1793
1794   gfx::FeatureState& wrCompositor =
1795       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_COMPOSITOR);
1796   InitFeatureObject(aCx, aObj, "wrCompositor", wrCompositor, &obj);
1797
1798   gfx::FeatureState& openglCompositing =
1799       gfxConfig::GetFeature(gfx::Feature::OPENGL_COMPOSITING);
1800   InitFeatureObject(aCx, aObj, "openglCompositing", openglCompositing, &obj);
1801
1802   gfx::FeatureState& omtp = gfxConfig::GetFeature(gfx::Feature::OMTP);
1803   InitFeatureObject(aCx, aObj, "omtp", omtp, &obj);
1804 }
1805
1806 bool GfxInfoBase::InitFeatureObject(JSContext* aCx,
1807                                     JS::Handle<JSObject*> aContainer,
1808                                     const char* aName,
1809                                     mozilla::gfx::FeatureState& aFeatureState,
1810                                     JS::MutableHandle<JSObject*> aOutObj) {
1811   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1812   if (!obj) {
1813     return false;
1814   }
1815
1816   nsCString status = aFeatureState.GetStatusAndFailureIdString();
1817
1818   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, status.get()));
1819   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1820   JS_SetProperty(aCx, obj, "status", val);
1821
1822   // Add the feature object to the container.
1823   {
1824     JS::Rooted<JS::Value> val(aCx, JS::ObjectValue(*obj));
1825     JS_SetProperty(aCx, aContainer, aName, val);
1826   }
1827
1828   aOutObj.set(obj);
1829   return true;
1830 }
1831
1832 nsresult GfxInfoBase::GetActiveCrashGuards(JSContext* aCx,
1833                                            JS::MutableHandle<JS::Value> aOut) {
1834   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1835   if (!array) {
1836     return NS_ERROR_OUT_OF_MEMORY;
1837   }
1838   aOut.setObject(*array);
1839
1840   DriverCrashGuard::ForEachActiveCrashGuard(
1841       [&](const char* aName, const char* aPrefName) -> void {
1842         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1843         if (!obj) {
1844           return;
1845         }
1846         if (!SetJSPropertyString(aCx, obj, "type", aName)) {
1847           return;
1848         }
1849         if (!SetJSPropertyString(aCx, obj, "prefName", aPrefName)) {
1850           return;
1851         }
1852         if (!AppendJSElement(aCx, array, obj)) {
1853           return;
1854         }
1855       });
1856
1857   return NS_OK;
1858 }
1859
1860 NS_IMETHODIMP
1861 GfxInfoBase::GetTargetFrameRate(uint32_t* aTargetFrameRate) {
1862   *aTargetFrameRate = gfxPlatform::TargetFrameRate();
1863   return NS_OK;
1864 }
1865
1866 NS_IMETHODIMP
1867 GfxInfoBase::GetCodecSupportInfo(nsACString& aCodecSupportInfo) {
1868   aCodecSupportInfo.Assign(gfx::gfxVars::CodecSupportInfo());
1869   return NS_OK;
1870 }
1871
1872 NS_IMETHODIMP
1873 GfxInfoBase::GetIsHeadless(bool* aIsHeadless) {
1874   *aIsHeadless = gfxPlatform::IsHeadless();
1875   return NS_OK;
1876 }
1877
1878 NS_IMETHODIMP
1879 GfxInfoBase::GetContentBackend(nsAString& aContentBackend) {
1880   BackendType backend = gfxPlatform::GetPlatform()->GetDefaultContentBackend();
1881   nsString outStr;
1882
1883   switch (backend) {
1884     case BackendType::DIRECT2D1_1: {
1885       outStr.AppendPrintf("Direct2D 1.1");
1886       break;
1887     }
1888     case BackendType::SKIA: {
1889       outStr.AppendPrintf("Skia");
1890       break;
1891     }
1892     case BackendType::CAIRO: {
1893       outStr.AppendPrintf("Cairo");
1894       break;
1895     }
1896     default:
1897       return NS_ERROR_FAILURE;
1898   }
1899
1900   aContentBackend.Assign(outStr);
1901   return NS_OK;
1902 }
1903
1904 NS_IMETHODIMP
1905 GfxInfoBase::GetAzureCanvasBackend(nsAString& aBackend) {
1906   CopyASCIItoUTF16(mozilla::MakeStringSpan(
1907                        gfxPlatform::GetPlatform()->GetAzureCanvasBackend()),
1908                    aBackend);
1909   return NS_OK;
1910 }
1911
1912 NS_IMETHODIMP
1913 GfxInfoBase::GetAzureContentBackend(nsAString& aBackend) {
1914   CopyASCIItoUTF16(mozilla::MakeStringSpan(
1915                        gfxPlatform::GetPlatform()->GetAzureContentBackend()),
1916                    aBackend);
1917   return NS_OK;
1918 }
1919
1920 NS_IMETHODIMP
1921 GfxInfoBase::GetUsingGPUProcess(bool* aOutValue) {
1922   GPUProcessManager* gpu = GPUProcessManager::Get();
1923   if (!gpu) {
1924     // Not supported in content processes.
1925     return NS_ERROR_FAILURE;
1926   }
1927
1928   *aOutValue = !!gpu->GetGPUChild();
1929   return NS_OK;
1930 }
1931
1932 NS_IMETHODIMP_(int32_t)
1933 GfxInfoBase::GetMaxRefreshRate(bool* aMixed) {
1934   if (aMixed) {
1935     *aMixed = false;
1936   }
1937
1938   int32_t maxRefreshRate = 0;
1939   for (auto& screen : ScreenManager::GetSingleton().CurrentScreenList()) {
1940     int32_t refreshRate = screen->GetRefreshRate();
1941     if (aMixed && maxRefreshRate > 0 && maxRefreshRate != refreshRate) {
1942       *aMixed = true;
1943     }
1944     maxRefreshRate = std::max(maxRefreshRate, refreshRate);
1945   }
1946
1947   return maxRefreshRate > 0 ? maxRefreshRate : -1;
1948 }
1949
1950 NS_IMETHODIMP
1951 GfxInfoBase::ControlGPUProcessForXPCShell(bool aEnable, bool* _retval) {
1952   gfxPlatform::GetPlatform();
1953
1954   GPUProcessManager* gpm = GPUProcessManager::Get();
1955   if (aEnable) {
1956     if (!gfxConfig::IsEnabled(gfx::Feature::GPU_PROCESS)) {
1957       gfxConfig::UserForceEnable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1958     }
1959     DebugOnly<nsresult> rv = gpm->EnsureGPUReady();
1960     MOZ_ASSERT(rv != NS_ERROR_ILLEGAL_DURING_SHUTDOWN);
1961   } else {
1962     gfxConfig::UserDisable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1963     gpm->KillProcess();
1964   }
1965
1966   *_retval = true;
1967   return NS_OK;
1968 }
1969
1970 NS_IMETHODIMP GfxInfoBase::KillGPUProcessForTests() {
1971   GPUProcessManager* gpm = GPUProcessManager::Get();
1972   if (!gpm) {
1973     // gfxPlatform has not been initialized.
1974     return NS_ERROR_NOT_INITIALIZED;
1975   }
1976
1977   gpm->KillProcess();
1978   return NS_OK;
1979 }
1980
1981 NS_IMETHODIMP GfxInfoBase::CrashGPUProcessForTests() {
1982   GPUProcessManager* gpm = GPUProcessManager::Get();
1983   if (!gpm) {
1984     // gfxPlatform has not been initialized.
1985     return NS_ERROR_NOT_INITIALIZED;
1986   }
1987
1988   gpm->CrashProcess();
1989   return NS_OK;
1990 }
1991
1992 GfxInfoCollectorBase::GfxInfoCollectorBase() {
1993   GfxInfoBase::AddCollector(this);
1994 }
1995
1996 GfxInfoCollectorBase::~GfxInfoCollectorBase() {
1997   GfxInfoBase::RemoveCollector(this);
1998 }