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