Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1659 insertions, 0 deletions

diff --git a/xpcom/base/nsSystemInfo.cpp b/xpcom/base/nsSystemInfo.cpp
new file mode 100644
index 0000000000..8d2850feae
--- /dev/null
+++ b/xpcom/base/nsSystemInfo.cpp
@@ -0,0 +1,1659 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ArrayUtils.h"
+
+#include "nsAppRunner.h"
+#include "nsSystemInfo.h"
+#include "prsystem.h"
+#include "prio.h"
+#include "mozilla/SSE.h"
+#include "mozilla/arm.h"
+#include "mozilla/LazyIdleThread.h"
+#include "mozilla/LookAndFeel.h"
+#include "mozilla/Sprintf.h"
+#include "jsapi.h"
+#include "js/PropertyAndElement.h"  // JS_SetProperty
+#include "mozilla/dom/Promise.h"
+
+#ifdef XP_WIN
+#  include <comutil.h>
+#  include <time.h>
+#  ifndef __MINGW32__
+#    include <iwscapi.h>
+#  endif  // __MINGW32__
+#  include <windows.h>
+#  include <winioctl.h>
+#  ifndef __MINGW32__
+#    include <wrl.h>
+#    include <wscapi.h>
+#  endif  // __MINGW32__
+#  include "base/scoped_handle_win.h"
+#  include "mozilla/DynamicallyLinkedFunctionPtr.h"
+#  include "mozilla/WindowsVersion.h"
+#  include "nsAppDirectoryServiceDefs.h"
+#  include "nsDirectoryServiceDefs.h"
+#  include "nsDirectoryServiceUtils.h"
+#  include "nsWindowsHelpers.h"
+#  include "WinUtils.h"
+#  include "mozilla/NotNull.h"
+
+#endif
+
+#ifdef XP_MACOSX
+#  include "MacHelpers.h"
+#endif
+
+#ifdef MOZ_WIDGET_GTK
+#  include <gtk/gtk.h>
+#  include <dlfcn.h>
+#  include "mozilla/WidgetUtilsGtk.h"
+#endif
+
+#if defined(XP_LINUX) && !defined(ANDROID)
+#  include <unistd.h>
+#  include <fstream>
+#  include "mozilla/Tokenizer.h"
+#  include "nsCharSeparatedTokenizer.h"
+
+#  include <map>
+#  include <string>
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "AndroidBuild.h"
+#  include "mozilla/java/GeckoAppShellWrappers.h"
+#  include "mozilla/jni/Utils.h"
+#endif
+
+#ifdef XP_MACOSX
+#  include <sys/sysctl.h>
+#endif
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+#  include "mozilla/SandboxInfo.h"
+#endif
+
+// Slot for NS_InitXPCOM to pass information to nsSystemInfo::Init.
+// Only set to nonzero (potentially) if XP_UNIX.  On such systems, the
+// system call to discover the appropriate value is not thread-safe,
+// so we must call it before going multithreaded, but nsSystemInfo::Init
+// only happens well after that point.
+uint32_t nsSystemInfo::gUserUmask = 0;
+
+using namespace mozilla::dom;
+
+#if defined(XP_WIN)
+#  define RuntimeClass_Windows_System_Profile_WindowsIntegrityPolicy \
+    L"Windows.System.Profile.WindowsIntegrityPolicy"
+#  ifndef __MINGW32__
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace ABI::Windows::Foundation;
+#  endif  // __MINGW32__
+#endif
+
+#if defined(XP_LINUX) && !defined(ANDROID)
+static void SimpleParseKeyValuePairs(
+    const std::string& aFilename,
+    std::map<nsCString, nsCString>& aKeyValuePairs) {
+  std::ifstream input(aFilename.c_str());
+  for (std::string line; std::getline(input, line);) {
+    nsAutoCString key, value;
+
+    nsCCharSeparatedTokenizer tokens(nsDependentCString(line.c_str()), ':');
+    if (tokens.hasMoreTokens()) {
+      key = tokens.nextToken();
+      if (tokens.hasMoreTokens()) {
+        value = tokens.nextToken();
+      }
+      // We want the value even if there was just one token, to cover the
+      // case where we had the key, and the value was blank (seems to be
+      // a valid scenario some files.)
+      aKeyValuePairs[key] = value;
+    }
+  }
+}
+#endif
+
+#ifdef XP_WIN
+// Lifted from media/webrtc/trunk/webrtc/base/systeminfo.cc,
+// so keeping the _ instead of switching to camel case for now.
+static void GetProcessorInformation(int* physical_cpus, int* cache_size_L2,
+                                    int* cache_size_L3) {
+  MOZ_ASSERT(physical_cpus && cache_size_L2 && cache_size_L3);
+
+  *physical_cpus = 0;
+  *cache_size_L2 = 0;  // This will be in kbytes
+  *cache_size_L3 = 0;  // This will be in kbytes
+
+  // Determine buffer size, allocate and get processor information.
+  // Size can change between calls (unlikely), so a loop is done.
+  SYSTEM_LOGICAL_PROCESSOR_INFORMATION info_buffer[32];
+  SYSTEM_LOGICAL_PROCESSOR_INFORMATION* infos = &info_buffer[0];
+  DWORD return_length = sizeof(info_buffer);
+  while (!::GetLogicalProcessorInformation(infos, &return_length)) {
+    if (GetLastError() == ERROR_INSUFFICIENT_BUFFER &&
+        infos == &info_buffer[0]) {
+      infos = new SYSTEM_LOGICAL_PROCESSOR_INFORMATION
+          [return_length / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION)];
+    } else {
+      return;
+    }
+  }
+
+  for (size_t i = 0;
+       i < return_length / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); ++i) {
+    if (infos[i].Relationship == RelationProcessorCore) {
+      ++*physical_cpus;
+    } else if (infos[i].Relationship == RelationCache) {
+      // Only care about L2 and L3 cache
+      switch (infos[i].Cache.Level) {
+        case 2:
+          *cache_size_L2 = static_cast<int>(infos[i].Cache.Size / 1024);
+          break;
+        case 3:
+          *cache_size_L3 = static_cast<int>(infos[i].Cache.Size / 1024);
+          break;
+        default:
+          break;
+      }
+    }
+  }
+  if (infos != &info_buffer[0]) {
+    delete[] infos;
+  }
+  return;
+}
+#endif
+
+#if defined(XP_WIN)
+namespace {
+static nsresult GetFolderDiskInfo(nsIFile* file, FolderDiskInfo& info) {
+  info.model.Truncate();
+  info.revision.Truncate();
+  info.isSSD = false;
+
+  nsAutoString filePath;
+  nsresult rv = file->GetPath(filePath);
+  NS_ENSURE_SUCCESS(rv, rv);
+  wchar_t volumeMountPoint[MAX_PATH] = {L'\\', L'\\', L'.', L'\\'};
+  const size_t PREFIX_LEN = 4;
+  if (!::GetVolumePathNameW(
+          filePath.get(), volumeMountPoint + PREFIX_LEN,
+          mozilla::ArrayLength(volumeMountPoint) - PREFIX_LEN)) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  size_t volumeMountPointLen = wcslen(volumeMountPoint);
+  // Since we would like to open a drive and not a directory, we need to
+  // remove any trailing backslash. A drive handle is valid for
+  // DeviceIoControl calls, a directory handle is not.
+  if (volumeMountPoint[volumeMountPointLen - 1] == L'\\') {
+    volumeMountPoint[volumeMountPointLen - 1] = L'\0';
+  }
+  ScopedHandle handle(::CreateFileW(volumeMountPoint, 0,
+                                    FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr,
+                                    OPEN_EXISTING, 0, nullptr));
+  if (!handle.IsValid()) {
+    return NS_ERROR_UNEXPECTED;
+  }
+  STORAGE_PROPERTY_QUERY queryParameters = {StorageDeviceProperty,
+                                            PropertyStandardQuery};
+  STORAGE_DEVICE_DESCRIPTOR outputHeader = {sizeof(STORAGE_DEVICE_DESCRIPTOR)};
+  DWORD bytesRead = 0;
+  if (!::DeviceIoControl(handle, IOCTL_STORAGE_QUERY_PROPERTY, &queryParameters,
+                         sizeof(queryParameters), &outputHeader,
+                         sizeof(outputHeader), &bytesRead, nullptr)) {
+    return NS_ERROR_FAILURE;
+  }
+  PSTORAGE_DEVICE_DESCRIPTOR deviceOutput =
+      (PSTORAGE_DEVICE_DESCRIPTOR)malloc(outputHeader.Size);
+  if (!::DeviceIoControl(handle, IOCTL_STORAGE_QUERY_PROPERTY, &queryParameters,
+                         sizeof(queryParameters), deviceOutput,
+                         outputHeader.Size, &bytesRead, nullptr)) {
+    free(deviceOutput);
+    return NS_ERROR_FAILURE;
+  }
+
+  queryParameters.PropertyId = StorageDeviceTrimProperty;
+  bytesRead = 0;
+  bool isSSD = false;
+  DEVICE_TRIM_DESCRIPTOR trimDescriptor = {sizeof(DEVICE_TRIM_DESCRIPTOR)};
+  if (::DeviceIoControl(handle, IOCTL_STORAGE_QUERY_PROPERTY, &queryParameters,
+                        sizeof(queryParameters), &trimDescriptor,
+                        sizeof(trimDescriptor), &bytesRead, nullptr)) {
+    if (trimDescriptor.TrimEnabled) {
+      isSSD = true;
+    }
+  }
+
+  if (isSSD) {
+    // Get Seek Penalty
+    queryParameters.PropertyId = StorageDeviceSeekPenaltyProperty;
+    bytesRead = 0;
+    DEVICE_SEEK_PENALTY_DESCRIPTOR seekPenaltyDescriptor = {
+        sizeof(DEVICE_SEEK_PENALTY_DESCRIPTOR)};
+    if (::DeviceIoControl(handle, IOCTL_STORAGE_QUERY_PROPERTY,
+                          &queryParameters, sizeof(queryParameters),
+                          &seekPenaltyDescriptor, sizeof(seekPenaltyDescriptor),
+                          &bytesRead, nullptr)) {
+      // It is possible that the disk has TrimEnabled, but also
+      // IncursSeekPenalty; In this case, this is an HDD
+      if (seekPenaltyDescriptor.IncursSeekPenalty) {
+        isSSD = false;
+      }
+    }
+  }
+
+  // Some HDDs are including product ID info in the vendor field. Since PNP
+  // IDs include vendor info and product ID concatenated together, we'll do
+  // that here and interpret the result as a unique ID for the HDD model.
+  if (deviceOutput->VendorIdOffset) {
+    info.model =
+        reinterpret_cast<char*>(deviceOutput) + deviceOutput->VendorIdOffset;
+  }
+  if (deviceOutput->ProductIdOffset) {
+    info.model +=
+        reinterpret_cast<char*>(deviceOutput) + deviceOutput->ProductIdOffset;
+  }
+  info.model.CompressWhitespace();
+  if (deviceOutput->ProductRevisionOffset) {
+    info.revision = reinterpret_cast<char*>(deviceOutput) +
+                    deviceOutput->ProductRevisionOffset;
+    info.revision.CompressWhitespace();
+  }
+  info.isSSD = isSSD;
+  free(deviceOutput);
+  return NS_OK;
+}
+
+static nsresult CollectDiskInfo(nsIFile* greDir, nsIFile* winDir,
+                                nsIFile* profDir, DiskInfo& info) {
+  nsresult rv = GetFolderDiskInfo(greDir, info.binary);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  rv = GetFolderDiskInfo(winDir, info.system);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  return GetFolderDiskInfo(profDir, info.profile);
+}
+
+static nsresult CollectOSInfo(OSInfo& info) {
+  HKEY installYearHKey;
+  LONG status = RegOpenKeyExW(
+      HKEY_LOCAL_MACHINE, L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 0,
+      KEY_READ | KEY_WOW64_64KEY, &installYearHKey);
+
+  if (status != ERROR_SUCCESS) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  nsAutoRegKey installYearKey(installYearHKey);
+
+  DWORD type = 0;
+  time_t raw_time = 0;
+  DWORD time_size = sizeof(time_t);
+
+  status = RegQueryValueExW(installYearHKey, L"InstallDate", nullptr, &type,
+                            (LPBYTE)&raw_time, &time_size);
+
+  if (status != ERROR_SUCCESS) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  if (type != REG_DWORD) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  tm time;
+  if (localtime_s(&time, &raw_time) != 0) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  info.installYear = 1900UL + time.tm_year;
+
+  nsAutoServiceHandle scm(
+      OpenSCManager(nullptr, SERVICES_ACTIVE_DATABASE, SC_MANAGER_CONNECT));
+
+  if (!scm) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  bool superfetchServiceRunning = false;
+
+  // Superfetch was introduced in Windows Vista as a service with the name
+  // SysMain. The service display name was also renamed to SysMain after Windows
+  // 10 build 1809.
+  nsAutoServiceHandle hService(OpenService(scm, L"SysMain", GENERIC_READ));
+
+  if (hService) {
+    SERVICE_STATUS superfetchStatus;
+    LPSERVICE_STATUS pSuperfetchStatus = &superfetchStatus;
+
+    if (!QueryServiceStatus(hService, pSuperfetchStatus)) {
+      return NS_ERROR_UNEXPECTED;
+    }
+
+    superfetchServiceRunning =
+        superfetchStatus.dwCurrentState == SERVICE_RUNNING;
+  }
+
+  // If the SysMain (Superfetch) service is available, but not configured using
+  // the defaults, then it's disabled for our purposes, since it's not going to
+  // be operating as expected.
+  bool superfetchUsingDefaultParams = true;
+  bool prefetchUsingDefaultParams = true;
+
+  static const WCHAR prefetchParamsKeyName[] =
+      L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Memory "
+      L"Management\\PrefetchParameters";
+  static const DWORD SUPERFETCH_DEFAULT_PARAM = 3;
+  static const DWORD PREFETCH_DEFAULT_PARAM = 3;
+
+  HKEY prefetchParamsHKey;
+
+  LONG prefetchParamsStatus =
+      RegOpenKeyExW(HKEY_LOCAL_MACHINE, prefetchParamsKeyName, 0,
+                    KEY_READ | KEY_WOW64_64KEY, &prefetchParamsHKey);
+
+  if (prefetchParamsStatus == ERROR_SUCCESS) {
+    DWORD valueSize = sizeof(DWORD);
+    DWORD superfetchValue = 0;
+    nsAutoRegKey prefetchParamsKey(prefetchParamsHKey);
+    LONG superfetchParamStatus = RegQueryValueExW(
+        prefetchParamsHKey, L"EnableSuperfetch", nullptr, &type,
+        reinterpret_cast<LPBYTE>(&superfetchValue), &valueSize);
+
+    // If the EnableSuperfetch registry key doesn't exist, then it's using the
+    // default configuration.
+    if (superfetchParamStatus == ERROR_SUCCESS &&
+        superfetchValue != SUPERFETCH_DEFAULT_PARAM) {
+      superfetchUsingDefaultParams = false;
+    }
+
+    DWORD prefetchValue = 0;
+
+    LONG prefetchParamStatus = RegQueryValueExW(
+        prefetchParamsHKey, L"EnablePrefetcher", nullptr, &type,
+        reinterpret_cast<LPBYTE>(&prefetchValue), &valueSize);
+
+    // If the EnablePrefetcher registry key doesn't exist, then we interpret
+    // that as the Prefetcher being disabled (since Prefetch behaviour when
+    // the key is not available appears to be undefined).
+    if (prefetchParamStatus != ERROR_SUCCESS ||
+        prefetchValue != PREFETCH_DEFAULT_PARAM) {
+      prefetchUsingDefaultParams = false;
+    }
+  }
+
+  info.hasSuperfetch = superfetchServiceRunning && superfetchUsingDefaultParams;
+  info.hasPrefetch = prefetchUsingDefaultParams;
+
+  return NS_OK;
+}
+
+nsresult CollectCountryCode(nsAString& aCountryCode) {
+  GEOID geoid = GetUserGeoID(GEOCLASS_NATION);
+  if (geoid == GEOID_NOT_AVAILABLE) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+  // Get required length
+  int numChars = GetGeoInfoW(geoid, GEO_ISO2, nullptr, 0, 0);
+  if (!numChars) {
+    return NS_ERROR_FAILURE;
+  }
+  // Now get the string for real
+  aCountryCode.SetLength(numChars);
+  numChars =
+      GetGeoInfoW(geoid, GEO_ISO2, char16ptr_t(aCountryCode.BeginWriting()),
+                  aCountryCode.Length(), 0);
+  if (!numChars) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // numChars includes null terminator
+  aCountryCode.Truncate(numChars - 1);
+  return NS_OK;
+}
+
+}  // namespace
+
+#  ifndef __MINGW32__
+
+static HRESULT EnumWSCProductList(
+    nsAString& aOutput, mozilla::NotNull<IWSCProductList*> aProdList) {
+  MOZ_ASSERT(aOutput.IsEmpty());
+
+  LONG count;
+  HRESULT hr = aProdList->get_Count(&count);
+  if (FAILED(hr)) {
+    return hr;
+  }
+
+  for (LONG index = 0; index < count; ++index) {
+    RefPtr<IWscProduct> product;
+    hr = aProdList->get_Item(index, getter_AddRefs(product));
+    if (FAILED(hr)) {
+      return hr;
+    }
+
+    WSC_SECURITY_PRODUCT_STATE state;
+    hr = product->get_ProductState(&state);
+    if (FAILED(hr)) {
+      return hr;
+    }
+
+    // We only care about products that are active
+    if (state == WSC_SECURITY_PRODUCT_STATE_OFF ||
+        state == WSC_SECURITY_PRODUCT_STATE_SNOOZED) {
+      continue;
+    }
+
+    _bstr_t bName;
+    hr = product->get_ProductName(bName.GetAddress());
+    if (FAILED(hr)) {
+      return hr;
+    }
+
+    if (!aOutput.IsEmpty()) {
+      aOutput.AppendLiteral(u";");
+    }
+
+    aOutput.Append((wchar_t*)bName, bName.length());
+  }
+
+  return S_OK;
+}
+
+static nsresult GetWindowsSecurityCenterInfo(nsAString& aAVInfo,
+                                             nsAString& aAntiSpyInfo,
+                                             nsAString& aFirewallInfo) {
+  aAVInfo.Truncate();
+  aAntiSpyInfo.Truncate();
+  aFirewallInfo.Truncate();
+
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  const CLSID clsid = __uuidof(WSCProductList);
+  const IID iid = __uuidof(IWSCProductList);
+
+  // NB: A separate instance of IWSCProductList is needed for each distinct
+  // security provider type; MSDN says that we cannot reuse the same object
+  // and call Initialize() to pave over the previous data.
+
+  WSC_SECURITY_PROVIDER providerTypes[] = {WSC_SECURITY_PROVIDER_ANTIVIRUS,
+                                           WSC_SECURITY_PROVIDER_ANTISPYWARE,
+                                           WSC_SECURITY_PROVIDER_FIREWALL};
+
+  // Each output must match the corresponding entry in providerTypes.
+  nsAString* outputs[] = {&aAVInfo, &aAntiSpyInfo, &aFirewallInfo};
+
+  static_assert(
+      mozilla::ArrayLength(providerTypes) == mozilla::ArrayLength(outputs),
+      "Length of providerTypes and outputs arrays must match");
+
+  for (uint32_t index = 0; index < mozilla::ArrayLength(providerTypes);
+       ++index) {
+    RefPtr<IWSCProductList> prodList;
+    HRESULT hr = ::CoCreateInstance(clsid, nullptr, CLSCTX_INPROC_SERVER, iid,
+                                    getter_AddRefs(prodList));
+    if (FAILED(hr)) {
+      return NS_ERROR_NOT_AVAILABLE;
+    }
+
+    hr = prodList->Initialize(providerTypes[index]);
+    if (FAILED(hr)) {
+      return NS_ERROR_UNEXPECTED;
+    }
+
+    hr = EnumWSCProductList(*outputs[index],
+                            mozilla::WrapNotNull(prodList.get()));
+    if (FAILED(hr)) {
+      return NS_ERROR_UNEXPECTED;
+    }
+  }
+
+  return NS_OK;
+}
+
+#  endif  // __MINGW32__
+
+#endif  // defined(XP_WIN)
+
+#ifdef XP_MACOSX
+static nsresult GetAppleModelId(nsAutoCString& aModelId) {
+  size_t numChars = 0;
+  size_t result = sysctlbyname("hw.model", nullptr, &numChars, nullptr, 0);
+  if (result != 0 || !numChars) {
+    return NS_ERROR_FAILURE;
+  }
+  aModelId.SetLength(numChars);
+  result =
+      sysctlbyname("hw.model", aModelId.BeginWriting(), &numChars, nullptr, 0);
+  if (result != 0) {
+    return NS_ERROR_FAILURE;
+  }
+  // numChars includes null terminator
+  aModelId.Truncate(numChars - 1);
+  return NS_OK;
+}
+
+static nsresult ProcessIsRosettaTranslated(bool& isRosetta) {
+#  if defined(__aarch64__)
+  // There is no need to call sysctlbyname() if we are running as arm64.
+  isRosetta = false;
+#  else
+  int ret = 0;
+  size_t size = sizeof(ret);
+  if (sysctlbyname("sysctl.proc_translated", &ret, &size, NULL, 0) == -1) {
+    if (errno != ENOENT) {
+      fprintf(stderr, "Failed to check for translation environment\n");
+    }
+    isRosetta = false;
+  } else {
+    isRosetta = (ret == 1);
+  }
+#  endif
+  return NS_OK;
+}
+#endif
+
+using namespace mozilla;
+
+nsSystemInfo::nsSystemInfo() = default;
+
+nsSystemInfo::~nsSystemInfo() = default;
+
+// CPU-specific information.
+static const struct PropItems {
+  const char* name;
+  bool (*propfun)(void);
+} cpuPropItems[] = {
+    // x86-specific bits.
+    {"hasMMX", mozilla::supports_mmx},
+    {"hasSSE", mozilla::supports_sse},
+    {"hasSSE2", mozilla::supports_sse2},
+    {"hasSSE3", mozilla::supports_sse3},
+    {"hasSSSE3", mozilla::supports_ssse3},
+    {"hasSSE4A", mozilla::supports_sse4a},
+    {"hasSSE4_1", mozilla::supports_sse4_1},
+    {"hasSSE4_2", mozilla::supports_sse4_2},
+    {"hasAVX", mozilla::supports_avx},
+    {"hasAVX2", mozilla::supports_avx2},
+    {"hasAES", mozilla::supports_aes},
+    // ARM-specific bits.
+    {"hasEDSP", mozilla::supports_edsp},
+    {"hasARMv6", mozilla::supports_armv6},
+    {"hasARMv7", mozilla::supports_armv7},
+    {"hasNEON", mozilla::supports_neon}};
+
+nsresult CollectProcessInfo(ProcessInfo& info) {
+  nsAutoCString cpuVendor;
+  nsAutoCString cpuName;
+  int cpuSpeed = -1;
+  int cpuFamily = -1;
+  int cpuModel = -1;
+  int cpuStepping = -1;
+  int logicalCPUs = -1;
+  int physicalCPUs = -1;
+  int cacheSizeL2 = -1;
+  int cacheSizeL3 = -1;
+
+#if defined(XP_WIN)
+  // IsWow64Process2 is only available on Windows 10+, so we have to dynamically
+  // check for its existence.
+  typedef BOOL(WINAPI * LPFN_IWP2)(HANDLE, USHORT*, USHORT*);
+  LPFN_IWP2 iwp2 = reinterpret_cast<LPFN_IWP2>(
+      GetProcAddress(GetModuleHandle(L"kernel32"), "IsWow64Process2"));
+  BOOL isWow64 = FALSE;
+  USHORT processMachine = IMAGE_FILE_MACHINE_UNKNOWN;
+  USHORT nativeMachine = IMAGE_FILE_MACHINE_UNKNOWN;
+  BOOL gotWow64Value;
+  if (iwp2) {
+    gotWow64Value = iwp2(GetCurrentProcess(), &processMachine, &nativeMachine);
+    if (gotWow64Value) {
+      isWow64 = (processMachine != IMAGE_FILE_MACHINE_UNKNOWN);
+    }
+  } else {
+    gotWow64Value = IsWow64Process(GetCurrentProcess(), &isWow64);
+    // The function only indicates a WOW64 environment if it's 32-bit x86
+    // running on x86-64, so emulate what IsWow64Process2 would have given.
+    if (gotWow64Value && isWow64) {
+      processMachine = IMAGE_FILE_MACHINE_I386;
+      nativeMachine = IMAGE_FILE_MACHINE_AMD64;
+    }
+  }
+  NS_WARNING_ASSERTION(gotWow64Value, "IsWow64Process failed");
+  if (gotWow64Value) {
+    // Set this always, even for the x86-on-arm64 case.
+    info.isWow64 = !!isWow64;
+    // Additional information if we're running x86-on-arm64
+    info.isWowARM64 = (processMachine == IMAGE_FILE_MACHINE_I386 &&
+                       nativeMachine == IMAGE_FILE_MACHINE_ARM64);
+  }
+
+  // S Mode
+
+#  ifndef __MINGW32__
+  // WindowsIntegrityPolicy is only available on newer versions
+  // of Windows 10, so there's no point in trying to check this
+  // on earlier versions. We know GetActivationFactory crashes on
+  // Windows 7 when trying to retrieve this class, and may also
+  // crash on very old versions of Windows 10.
+  if (IsWin10Sep2018UpdateOrLater()) {
+    ComPtr<IWindowsIntegrityPolicyStatics> wip;
+    HRESULT hr = GetActivationFactory(
+        HStringReference(
+            RuntimeClass_Windows_System_Profile_WindowsIntegrityPolicy)
+            .Get(),
+        &wip);
+    if (SUCCEEDED(hr)) {
+      // info.isWindowsSMode ends up true if Windows is in S mode, otherwise
+      // false
+      // https://docs.microsoft.com/en-us/uwp/api/windows.system.profile.windowsintegritypolicy.isenabled?view=winrt-22000
+      hr = wip->get_IsEnabled(&info.isWindowsSMode);
+      NS_WARNING_ASSERTION(SUCCEEDED(hr),
+                           "WindowsIntegrityPolicy.IsEnabled failed");
+    }
+  }
+#  endif  // __MINGW32__
+
+  // CPU speed
+  HKEY key;
+  static const WCHAR keyName[] =
+      L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
+
+  if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyName, 0, KEY_QUERY_VALUE, &key) ==
+      ERROR_SUCCESS) {
+    DWORD data, len, vtype;
+    len = sizeof(data);
+
+    if (RegQueryValueEx(key, L"~Mhz", 0, 0, reinterpret_cast<LPBYTE>(&data),
+                        &len) == ERROR_SUCCESS) {
+      cpuSpeed = static_cast<int>(data);
+    }
+
+    // Limit to 64 double byte characters, should be plenty, but create
+    // a buffer one larger as the result may not be null terminated. If
+    // it is more than 64, we will not get the value.
+    wchar_t cpuVendorStr[64 + 1];
+    len = sizeof(cpuVendorStr) - 2;
+    if (RegQueryValueExW(key, L"VendorIdentifier", 0, &vtype,
+                         reinterpret_cast<LPBYTE>(cpuVendorStr),
+                         &len) == ERROR_SUCCESS &&
+        vtype == REG_SZ && len % 2 == 0 && len > 1) {
+      cpuVendorStr[len / 2] = 0;  // In case it isn't null terminated
+      CopyUTF16toUTF8(nsDependentString(cpuVendorStr), cpuVendor);
+    }
+
+    // Limit to 64 double byte characters, should be plenty, but create
+    // a buffer one larger as the result may not be null terminated. If
+    // it is more than 64, we will not get the value.
+    // The expected string size is 48 characters or less.
+    wchar_t cpuNameStr[64 + 1];
+    len = sizeof(cpuNameStr) - 2;
+    if (RegQueryValueExW(key, L"ProcessorNameString", 0, &vtype,
+                         reinterpret_cast<LPBYTE>(cpuNameStr),
+                         &len) == ERROR_SUCCESS &&
+        vtype == REG_SZ && len % 2 == 0 && len > 1) {
+      cpuNameStr[len / 2] = 0;  // In case it isn't null terminated
+      CopyUTF16toUTF8(nsDependentString(cpuNameStr), cpuName);
+    }
+
+    RegCloseKey(key);
+  }
+
+  // Other CPU attributes:
+  SYSTEM_INFO si;
+  GetNativeSystemInfo(&si);
+  logicalCPUs = si.dwNumberOfProcessors;
+  GetProcessorInformation(&physicalCPUs, &cacheSizeL2, &cacheSizeL3);
+  if (physicalCPUs <= 0) {
+    physicalCPUs = logicalCPUs;
+  }
+  cpuFamily = si.wProcessorLevel;
+  cpuModel = si.wProcessorRevision >> 8;
+  cpuStepping = si.wProcessorRevision & 0xFF;
+#elif defined(XP_MACOSX)
+  // CPU speed
+  uint64_t sysctlValue64 = 0;
+  uint32_t sysctlValue32 = 0;
+  size_t len = 0;
+  len = sizeof(sysctlValue64);
+  if (!sysctlbyname("hw.cpufrequency_max", &sysctlValue64, &len, NULL, 0)) {
+    cpuSpeed = static_cast<int>(sysctlValue64 / 1000000);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue64) == len);
+
+  len = sizeof(sysctlValue32);
+  if (!sysctlbyname("hw.physicalcpu_max", &sysctlValue32, &len, NULL, 0)) {
+    physicalCPUs = static_cast<int>(sysctlValue32);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue32) == len);
+
+  len = sizeof(sysctlValue32);
+  if (!sysctlbyname("hw.logicalcpu_max", &sysctlValue32, &len, NULL, 0)) {
+    logicalCPUs = static_cast<int>(sysctlValue32);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue32) == len);
+
+  len = sizeof(sysctlValue64);
+  if (!sysctlbyname("hw.l2cachesize", &sysctlValue64, &len, NULL, 0)) {
+    cacheSizeL2 = static_cast<int>(sysctlValue64 / 1024);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue64) == len);
+
+  len = sizeof(sysctlValue64);
+  if (!sysctlbyname("hw.l3cachesize", &sysctlValue64, &len, NULL, 0)) {
+    cacheSizeL3 = static_cast<int>(sysctlValue64 / 1024);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue64) == len);
+
+  if (!sysctlbyname("machdep.cpu.vendor", NULL, &len, NULL, 0)) {
+    char* cpuVendorStr = new char[len];
+    if (!sysctlbyname("machdep.cpu.vendor", cpuVendorStr, &len, NULL, 0)) {
+      cpuVendor = cpuVendorStr;
+    }
+    delete[] cpuVendorStr;
+  }
+
+  if (!sysctlbyname("machdep.cpu.brand_string", NULL, &len, NULL, 0)) {
+    char* cpuNameStr = new char[len];
+    if (!sysctlbyname("machdep.cpu.brand_string", cpuNameStr, &len, NULL, 0)) {
+      cpuName = cpuNameStr;
+    }
+    delete[] cpuNameStr;
+  }
+
+  len = sizeof(sysctlValue32);
+  if (!sysctlbyname("machdep.cpu.family", &sysctlValue32, &len, NULL, 0)) {
+    cpuFamily = static_cast<int>(sysctlValue32);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue32) == len);
+
+  len = sizeof(sysctlValue32);
+  if (!sysctlbyname("machdep.cpu.model", &sysctlValue32, &len, NULL, 0)) {
+    cpuModel = static_cast<int>(sysctlValue32);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue32) == len);
+
+  len = sizeof(sysctlValue32);
+  if (!sysctlbyname("machdep.cpu.stepping", &sysctlValue32, &len, NULL, 0)) {
+    cpuStepping = static_cast<int>(sysctlValue32);
+  }
+  MOZ_ASSERT(sizeof(sysctlValue32) == len);
+
+#elif defined(XP_LINUX) && !defined(ANDROID)
+  // Get vendor, family, model, stepping, physical cores
+  // from /proc/cpuinfo file
+  {
+    std::map<nsCString, nsCString> keyValuePairs;
+    SimpleParseKeyValuePairs("/proc/cpuinfo", keyValuePairs);
+
+    // cpuVendor from "vendor_id"
+    info.cpuVendor.Assign(keyValuePairs["vendor_id"_ns]);
+
+    // cpuName from "model name"
+    info.cpuName.Assign(keyValuePairs["model name"_ns]);
+
+    {
+      // cpuFamily from "cpu family"
+      Tokenizer::Token t;
+      Tokenizer p(keyValuePairs["cpu family"_ns]);
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cpuFamily = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+
+    {
+      // cpuModel from "model"
+      Tokenizer::Token t;
+      Tokenizer p(keyValuePairs["model"_ns]);
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cpuModel = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+
+    {
+      // cpuStepping from "stepping"
+      Tokenizer::Token t;
+      Tokenizer p(keyValuePairs["stepping"_ns]);
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cpuStepping = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+
+    {
+      // physicalCPUs from "cpu cores"
+      Tokenizer::Token t;
+      Tokenizer p(keyValuePairs["cpu cores"_ns]);
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        physicalCPUs = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+  }
+
+  {
+    // Get cpuSpeed from another file.
+    std::ifstream input(
+        "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq");
+    std::string line;
+    if (getline(input, line)) {
+      Tokenizer::Token t;
+      Tokenizer p(line.c_str());
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cpuSpeed = static_cast<int32_t>(t.AsInteger() / 1000);
+      }
+    }
+  }
+
+  {
+    // Get cacheSizeL2 from yet another file
+    std::ifstream input("/sys/devices/system/cpu/cpu0/cache/index2/size");
+    std::string line;
+    if (getline(input, line)) {
+      Tokenizer::Token t;
+      Tokenizer p(line.c_str(), nullptr, "K");
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cacheSizeL2 = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+  }
+
+  {
+    // Get cacheSizeL3 from yet another file
+    std::ifstream input("/sys/devices/system/cpu/cpu0/cache/index3/size");
+    std::string line;
+    if (getline(input, line)) {
+      Tokenizer::Token t;
+      Tokenizer p(line.c_str(), nullptr, "K");
+      if (p.Next(t) && t.Type() == Tokenizer::TOKEN_INTEGER &&
+          t.AsInteger() <= INT32_MAX) {
+        cacheSizeL3 = static_cast<int32_t>(t.AsInteger());
+      }
+    }
+  }
+
+  info.cpuCount = PR_GetNumberOfProcessors();
+#else
+  info.cpuCount = PR_GetNumberOfProcessors();
+#endif
+
+  if (cpuSpeed >= 0) {
+    info.cpuSpeed = cpuSpeed;
+  } else {
+    info.cpuSpeed = 0;
+  }
+  if (!cpuVendor.IsEmpty()) {
+    info.cpuVendor = cpuVendor;
+  }
+  if (!cpuName.IsEmpty()) {
+    info.cpuName = cpuName;
+  }
+  if (cpuFamily >= 0) {
+    info.cpuFamily = cpuFamily;
+  }
+  if (cpuModel >= 0) {
+    info.cpuModel = cpuModel;
+  }
+  if (cpuStepping >= 0) {
+    info.cpuStepping = cpuStepping;
+  }
+
+  if (logicalCPUs >= 0) {
+    info.cpuCount = logicalCPUs;
+  }
+  if (physicalCPUs >= 0) {
+    info.cpuCores = physicalCPUs;
+  }
+
+  if (cacheSizeL2 >= 0) {
+    info.l2cacheKB = cacheSizeL2;
+  }
+  if (cacheSizeL3 >= 0) {
+    info.l3cacheKB = cacheSizeL3;
+  }
+
+  return NS_OK;
+}
+
+#if defined(XP_WIN) && (_WIN32_WINNT < 0x0A00)
+WINBASEAPI
+BOOL WINAPI IsUserCetAvailableInEnvironment(_In_ DWORD UserCetEnvironment);
+
+#  define USER_CET_ENVIRONMENT_WIN32_PROCESS 0x00000000
+#endif
+
+nsresult nsSystemInfo::Init() {
+  // check that it is called from the main thread on all platforms.
+  MOZ_ASSERT(NS_IsMainThread());
+
+  nsresult rv;
+
+  static const struct {
+    PRSysInfo cmd;
+    const char* name;
+  } items[] = {{PR_SI_SYSNAME, "name"},
+               {PR_SI_ARCHITECTURE, "arch"},
+               {PR_SI_RELEASE, "version"},
+               {PR_SI_RELEASE_BUILD, "build"}};
+
+  for (uint32_t i = 0; i < (sizeof(items) / sizeof(items[0])); i++) {
+    char buf[SYS_INFO_BUFFER_LENGTH];
+    if (PR_GetSystemInfo(items[i].cmd, buf, sizeof(buf)) == PR_SUCCESS) {
+      rv = SetPropertyAsACString(NS_ConvertASCIItoUTF16(items[i].name),
+                                 nsDependentCString(buf));
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return rv;
+      }
+    } else {
+      NS_WARNING("PR_GetSystemInfo failed");
+    }
+  }
+
+  SetPropertyAsBool(u"isPackagedApp"_ns, false);
+
+  // Additional informations not available through PR_GetSystemInfo.
+  SetInt32Property(u"pagesize"_ns, PR_GetPageSize());
+  SetInt32Property(u"pageshift"_ns, PR_GetPageShift());
+  SetInt32Property(u"memmapalign"_ns, PR_GetMemMapAlignment());
+  SetUint64Property(u"memsize"_ns, PR_GetPhysicalMemorySize());
+  SetUint32Property(u"umask"_ns, nsSystemInfo::gUserUmask);
+
+  uint64_t virtualMem = 0;
+
+#if defined(XP_WIN)
+  // Virtual memory:
+  MEMORYSTATUSEX memStat;
+  memStat.dwLength = sizeof(memStat);
+  if (GlobalMemoryStatusEx(&memStat)) {
+    virtualMem = memStat.ullTotalVirtual;
+  }
+#endif
+  if (virtualMem) SetUint64Property(u"virtualmemsize"_ns, virtualMem);
+
+  for (uint32_t i = 0; i < ArrayLength(cpuPropItems); i++) {
+    rv = SetPropertyAsBool(NS_ConvertASCIItoUTF16(cpuPropItems[i].name),
+                           cpuPropItems[i].propfun());
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return rv;
+    }
+  }
+
+#ifdef XP_WIN
+  bool isMinGW =
+#  ifdef __MINGW32__
+      true;
+#  else
+      false;
+#  endif
+  rv = SetPropertyAsBool(u"isMinGW"_ns, !!isMinGW);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  boolean hasPackageIdentity = widget::WinUtils::HasPackageIdentity();
+
+  rv = SetPropertyAsBool(u"hasWinPackageId"_ns, hasPackageIdentity);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  rv = SetPropertyAsAString(u"winPackageFamilyName"_ns,
+                            widget::WinUtils::GetPackageFamilyName());
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  rv = SetPropertyAsBool(u"isPackagedApp"_ns, hasPackageIdentity);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+#  ifndef __MINGW32__
+  nsAutoString avInfo, antiSpyInfo, firewallInfo;
+  if (NS_SUCCEEDED(
+          GetWindowsSecurityCenterInfo(avInfo, antiSpyInfo, firewallInfo))) {
+    if (!avInfo.IsEmpty()) {
+      rv = SetPropertyAsAString(u"registeredAntiVirus"_ns, avInfo);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return rv;
+      }
+    }
+
+    if (!antiSpyInfo.IsEmpty()) {
+      rv = SetPropertyAsAString(u"registeredAntiSpyware"_ns, antiSpyInfo);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return rv;
+      }
+    }
+
+    if (!firewallInfo.IsEmpty()) {
+      rv = SetPropertyAsAString(u"registeredFirewall"_ns, firewallInfo);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return rv;
+      }
+    }
+  }
+#  endif  // __MINGW32__
+
+  mozilla::DynamicallyLinkedFunctionPtr<
+      decltype(&IsUserCetAvailableInEnvironment)>
+      isUserCetAvailable(L"api-ms-win-core-sysinfo-l1-2-6.dll",
+                         "IsUserCetAvailableInEnvironment");
+  bool hasUserCET = isUserCetAvailable &&
+                    isUserCetAvailable(USER_CET_ENVIRONMENT_WIN32_PROCESS);
+  rv = SetPropertyAsBool(u"hasUserCET"_ns, hasUserCET);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+#endif
+
+#if defined(XP_MACOSX)
+  nsAutoCString modelId;
+  if (NS_SUCCEEDED(GetAppleModelId(modelId))) {
+    rv = SetPropertyAsACString(u"appleModelId"_ns, modelId);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  bool isRosetta;
+  if (NS_SUCCEEDED(ProcessIsRosettaTranslated(isRosetta))) {
+    rv = SetPropertyAsBool(u"rosettaStatus"_ns, isRosetta);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+#endif
+
+  {
+    nsAutoCString themeInfo;
+    LookAndFeel::GetThemeInfo(themeInfo);
+    MOZ_TRY(SetPropertyAsACString(u"osThemeInfo"_ns, themeInfo));
+  }
+
+#if defined(MOZ_WIDGET_GTK)
+  // This must be done here because NSPR can only separate OS's when compiled,
+  // not libraries. 64 bytes is going to be well enough for "GTK " followed by 3
+  // integers separated with dots.
+  char gtkver[64];
+  ssize_t gtkver_len = 0;
+
+  if (gtkver_len <= 0) {
+    gtkver_len = SprintfLiteral(gtkver, "GTK %u.%u.%u", gtk_major_version,
+                                gtk_minor_version, gtk_micro_version);
+  }
+
+  nsAutoCString secondaryLibrary;
+  if (gtkver_len > 0 && gtkver_len < int(sizeof(gtkver))) {
+    secondaryLibrary.Append(nsDependentCSubstring(gtkver, gtkver_len));
+  }
+
+#  ifndef MOZ_TSAN
+  // With TSan, avoid loading libpulse here because we cannot unload it
+  // afterwards due to restrictions from TSan about unloading libraries
+  // matched by the suppression list.
+  void* libpulse = dlopen("libpulse.so.0", RTLD_LAZY);
+  const char* libpulseVersion = "not-available";
+  if (libpulse) {
+    auto pa_get_library_version = reinterpret_cast<const char* (*)()>(
+        dlsym(libpulse, "pa_get_library_version"));
+
+    if (pa_get_library_version) {
+      libpulseVersion = pa_get_library_version();
+    }
+  }
+
+  secondaryLibrary.AppendPrintf(",libpulse %s", libpulseVersion);
+
+  if (libpulse) {
+    dlclose(libpulse);
+  }
+#  endif
+
+  rv = SetPropertyAsACString(u"secondaryLibrary"_ns, secondaryLibrary);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+  rv = SetPropertyAsBool(u"isPackagedApp"_ns,
+                         widget::IsRunningUnderFlatpakOrSnap());
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+  AndroidSystemInfo info;
+  GetAndroidSystemInfo(&info);
+  SetupAndroidInfo(info);
+#endif
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+  SandboxInfo sandInfo = SandboxInfo::Get();
+
+  SetPropertyAsBool(u"hasSeccompBPF"_ns,
+                    sandInfo.Test(SandboxInfo::kHasSeccompBPF));
+  SetPropertyAsBool(u"hasSeccompTSync"_ns,
+                    sandInfo.Test(SandboxInfo::kHasSeccompTSync));
+  SetPropertyAsBool(u"hasUserNamespaces"_ns,
+                    sandInfo.Test(SandboxInfo::kHasUserNamespaces));
+  SetPropertyAsBool(u"hasPrivilegedUserNamespaces"_ns,
+                    sandInfo.Test(SandboxInfo::kHasPrivilegedUserNamespaces));
+
+  if (sandInfo.Test(SandboxInfo::kEnabledForContent)) {
+    SetPropertyAsBool(u"canSandboxContent"_ns, sandInfo.CanSandboxContent());
+  }
+
+  if (sandInfo.Test(SandboxInfo::kEnabledForMedia)) {
+    SetPropertyAsBool(u"canSandboxMedia"_ns, sandInfo.CanSandboxMedia());
+  }
+#endif  // XP_LINUX && MOZ_SANDBOX
+
+  return NS_OK;
+}
+
+#ifdef MOZ_WIDGET_ANDROID
+// Prerelease versions of Android use a letter instead of version numbers.
+// Unfortunately this breaks websites due to the user agent.
+// Chrome works around this by hardcoding an Android version when a
+// numeric version can't be obtained. We're doing the same.
+// This version will need to be updated whenever there is a new official
+// Android release. Search for "kDefaultAndroidMajorVersion" in:
+// https://source.chromium.org/chromium/chromium/src/+/master:base/system/sys_info_android.cc
+#  define DEFAULT_ANDROID_VERSION u"10.0.99"
+
+/* static */
+void nsSystemInfo::GetAndroidSystemInfo(AndroidSystemInfo* aInfo) {
+  if (!jni::IsAvailable()) {
+    // called from xpcshell etc.
+    aInfo->sdk_version() = 0;
+    return;
+  }
+
+  jni::String::LocalRef model = java::sdk::Build::MODEL();
+  aInfo->device() = model->ToString();
+
+  jni::String::LocalRef manufacturer =
+      mozilla::java::sdk::Build::MANUFACTURER();
+  aInfo->manufacturer() = manufacturer->ToString();
+
+  jni::String::LocalRef hardware = java::sdk::Build::HARDWARE();
+  aInfo->hardware() = hardware->ToString();
+
+  jni::String::LocalRef release = java::sdk::Build::VERSION::RELEASE();
+  nsString str(release->ToString());
+  int major_version;
+  int minor_version;
+  int bugfix_version;
+  int num_read = sscanf(NS_ConvertUTF16toUTF8(str).get(), "%d.%d.%d",
+                        &major_version, &minor_version, &bugfix_version);
+  if (num_read == 0) {
+    aInfo->release_version() = nsLiteralString(DEFAULT_ANDROID_VERSION);
+  } else {
+    aInfo->release_version() = str;
+  }
+
+  aInfo->sdk_version() = jni::GetAPIVersion();
+  aInfo->isTablet() = java::GeckoAppShell::IsTablet();
+}
+
+void nsSystemInfo::SetupAndroidInfo(const AndroidSystemInfo& aInfo) {
+  if (!aInfo.device().IsEmpty()) {
+    SetPropertyAsAString(u"device"_ns, aInfo.device());
+  }
+  if (!aInfo.manufacturer().IsEmpty()) {
+    SetPropertyAsAString(u"manufacturer"_ns, aInfo.manufacturer());
+  }
+  if (!aInfo.release_version().IsEmpty()) {
+    SetPropertyAsAString(u"release_version"_ns, aInfo.release_version());
+  }
+  SetPropertyAsBool(u"tablet"_ns, aInfo.isTablet());
+  // NSPR "version" is the kernel version. For Android we want the Android
+  // version. Rename SDK version to version and put the kernel version into
+  // kernel_version.
+  nsAutoString str;
+  nsresult rv = GetPropertyAsAString(u"version"_ns, str);
+  if (NS_SUCCEEDED(rv)) {
+    SetPropertyAsAString(u"kernel_version"_ns, str);
+  }
+  // When JNI is not available (eg. in xpcshell tests), sdk_version is 0.
+  if (aInfo.sdk_version() != 0) {
+    if (!aInfo.hardware().IsEmpty()) {
+      SetPropertyAsAString(u"hardware"_ns, aInfo.hardware());
+    }
+    SetPropertyAsInt32(u"version"_ns, aInfo.sdk_version());
+  }
+}
+#endif  // MOZ_WIDGET_ANDROID
+
+void nsSystemInfo::SetInt32Property(const nsAString& aPropertyName,
+                                    const int32_t aValue) {
+  NS_WARNING_ASSERTION(aValue > 0, "Unable to read system value");
+  if (aValue > 0) {
+#ifdef DEBUG
+    nsresult rv =
+#endif
+        SetPropertyAsInt32(aPropertyName, aValue);
+    NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Unable to set property");
+  }
+}
+
+void nsSystemInfo::SetUint32Property(const nsAString& aPropertyName,
+                                     const uint32_t aValue) {
+  // Only one property is currently set via this function.
+  // It may legitimately be zero.
+#ifdef DEBUG
+  nsresult rv =
+#endif
+      SetPropertyAsUint32(aPropertyName, aValue);
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Unable to set property");
+}
+
+void nsSystemInfo::SetUint64Property(const nsAString& aPropertyName,
+                                     const uint64_t aValue) {
+  NS_WARNING_ASSERTION(aValue > 0, "Unable to read system value");
+  if (aValue > 0) {
+#ifdef DEBUG
+    nsresult rv =
+#endif
+        SetPropertyAsUint64(aPropertyName, aValue);
+    NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Unable to set property");
+  }
+}
+
+#ifdef XP_WIN
+
+static bool GetJSObjForDiskInfo(JSContext* aCx, JS::Handle<JSObject*> aParent,
+                                const FolderDiskInfo& info,
+                                const char* propName) {
+  JS::Rooted<JSObject*> jsInfo(aCx, JS_NewPlainObject(aCx));
+  if (!jsInfo) {
+    return false;
+  }
+
+  JSString* strModel =
+      JS_NewStringCopyN(aCx, info.model.get(), info.model.Length());
+  if (!strModel) {
+    return false;
+  }
+  JS::Rooted<JS::Value> valModel(aCx, JS::StringValue(strModel));
+  if (!JS_SetProperty(aCx, jsInfo, "model", valModel)) {
+    return false;
+  }
+
+  JSString* strRevision =
+      JS_NewStringCopyN(aCx, info.revision.get(), info.revision.Length());
+  if (!strRevision) {
+    return false;
+  }
+  JS::Rooted<JS::Value> valRevision(aCx, JS::StringValue(strRevision));
+  if (!JS_SetProperty(aCx, jsInfo, "revision", valRevision)) {
+    return false;
+  }
+
+  JSString* strSSD = JS_NewStringCopyZ(aCx, info.isSSD ? "SSD" : "HDD");
+  if (!strSSD) {
+    return false;
+  }
+  JS::Rooted<JS::Value> valSSD(aCx, JS::StringValue(strSSD));
+  if (!JS_SetProperty(aCx, jsInfo, "type", valSSD)) {
+    return false;
+  }
+
+  JS::Rooted<JS::Value> val(aCx, JS::ObjectValue(*jsInfo));
+  return JS_SetProperty(aCx, aParent, propName, val);
+}
+
+JSObject* GetJSObjForOSInfo(JSContext* aCx, const OSInfo& info) {
+  JS::Rooted<JSObject*> jsInfo(aCx, JS_NewPlainObject(aCx));
+
+  JS::Rooted<JS::Value> valInstallYear(aCx, JS::Int32Value(info.installYear));
+  JS_SetProperty(aCx, jsInfo, "installYear", valInstallYear);
+
+  JS::Rooted<JS::Value> valHasSuperfetch(aCx,
+                                         JS::BooleanValue(info.hasSuperfetch));
+  JS_SetProperty(aCx, jsInfo, "hasSuperfetch", valHasSuperfetch);
+
+  JS::Rooted<JS::Value> valHasPrefetch(aCx, JS::BooleanValue(info.hasPrefetch));
+  JS_SetProperty(aCx, jsInfo, "hasPrefetch", valHasPrefetch);
+
+  return jsInfo;
+}
+
+#endif
+
+JSObject* GetJSObjForProcessInfo(JSContext* aCx, const ProcessInfo& info) {
+  JS::Rooted<JSObject*> jsInfo(aCx, JS_NewPlainObject(aCx));
+
+#if defined(XP_WIN)
+  JS::Rooted<JS::Value> valisWow64(aCx, JS::BooleanValue(info.isWow64));
+  JS_SetProperty(aCx, jsInfo, "isWow64", valisWow64);
+
+  JS::Rooted<JS::Value> valisWowARM64(aCx, JS::BooleanValue(info.isWowARM64));
+  JS_SetProperty(aCx, jsInfo, "isWowARM64", valisWowARM64);
+
+  JS::Rooted<JS::Value> valisWindowsSMode(
+      aCx, JS::BooleanValue(info.isWindowsSMode));
+  JS_SetProperty(aCx, jsInfo, "isWindowsSMode", valisWindowsSMode);
+#endif
+
+  JS::Rooted<JS::Value> valCountInfo(aCx, JS::Int32Value(info.cpuCount));
+  JS_SetProperty(aCx, jsInfo, "count", valCountInfo);
+
+  JS::Rooted<JS::Value> valCoreInfo(aCx, JS::Int32Value(info.cpuCores));
+  JS_SetProperty(aCx, jsInfo, "cores", valCoreInfo);
+
+  JSString* strVendor =
+      JS_NewStringCopyN(aCx, info.cpuVendor.get(), info.cpuVendor.Length());
+  JS::Rooted<JS::Value> valVendor(aCx, JS::StringValue(strVendor));
+  JS_SetProperty(aCx, jsInfo, "vendor", valVendor);
+
+  JSString* strName =
+      JS_NewStringCopyN(aCx, info.cpuName.get(), info.cpuName.Length());
+  JS::Rooted<JS::Value> valName(aCx, JS::StringValue(strName));
+  JS_SetProperty(aCx, jsInfo, "name", valName);
+
+  JS::Rooted<JS::Value> valFamilyInfo(aCx, JS::Int32Value(info.cpuFamily));
+  JS_SetProperty(aCx, jsInfo, "family", valFamilyInfo);
+
+  JS::Rooted<JS::Value> valModelInfo(aCx, JS::Int32Value(info.cpuModel));
+  JS_SetProperty(aCx, jsInfo, "model", valModelInfo);
+
+  JS::Rooted<JS::Value> valSteppingInfo(aCx, JS::Int32Value(info.cpuStepping));
+  JS_SetProperty(aCx, jsInfo, "stepping", valSteppingInfo);
+
+  JS::Rooted<JS::Value> valL2CacheInfo(aCx, JS::Int32Value(info.l2cacheKB));
+  JS_SetProperty(aCx, jsInfo, "l2cacheKB", valL2CacheInfo);
+
+  JS::Rooted<JS::Value> valL3CacheInfo(aCx, JS::Int32Value(info.l3cacheKB));
+  JS_SetProperty(aCx, jsInfo, "l3cacheKB", valL3CacheInfo);
+
+  JS::Rooted<JS::Value> valSpeedInfo(aCx, JS::Int32Value(info.cpuSpeed));
+  JS_SetProperty(aCx, jsInfo, "speedMHz", valSpeedInfo);
+
+  return jsInfo;
+}
+
+RefPtr<nsISerialEventTarget> nsSystemInfo::GetBackgroundTarget() {
+  if (!mBackgroundET) {
+    MOZ_ALWAYS_SUCCEEDS(NS_CreateBackgroundTaskQueue(
+        "SystemInfoThread", getter_AddRefs(mBackgroundET)));
+  }
+  return mBackgroundET;
+}
+
+NS_IMETHODIMP
+nsSystemInfo::GetOsInfo(JSContext* aCx, Promise** aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+#if defined(XP_WIN)
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
+  if (NS_WARN_IF(!global)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  ErrorResult erv;
+  RefPtr<Promise> promise = Promise::Create(global, erv);
+  if (NS_WARN_IF(erv.Failed())) {
+    return erv.StealNSResult();
+  }
+
+  if (!mOSInfoPromise) {
+    RefPtr<nsISerialEventTarget> backgroundET = GetBackgroundTarget();
+
+    mOSInfoPromise = InvokeAsync(backgroundET, __func__, []() {
+      OSInfo info;
+      nsresult rv = CollectOSInfo(info);
+      if (NS_SUCCEEDED(rv)) {
+        return OSInfoPromise::CreateAndResolve(info, __func__);
+      }
+      return OSInfoPromise::CreateAndReject(rv, __func__);
+    });
+  };
+
+  // Chain the new promise to the extant mozpromise
+  RefPtr<Promise> capturedPromise = promise;
+  mOSInfoPromise->Then(
+      GetMainThreadSerialEventTarget(), __func__,
+      [capturedPromise](const OSInfo& info) {
+        AutoJSAPI jsapi;
+        if (NS_WARN_IF(!jsapi.Init(capturedPromise->GetGlobalObject()))) {
+          capturedPromise->MaybeReject(NS_ERROR_UNEXPECTED);
+          return;
+        }
+        JSContext* cx = jsapi.cx();
+        JS::Rooted<JS::Value> val(
+            cx, JS::ObjectValue(*GetJSObjForOSInfo(cx, info)));
+        capturedPromise->MaybeResolve(val);
+      },
+      [capturedPromise](const nsresult rv) {
+        // Resolve with null when installYear is not available from the system
+        capturedPromise->MaybeResolve(JS::NullHandleValue);
+      });
+
+  promise.forget(aResult);
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemInfo::GetDiskInfo(JSContext* aCx, Promise** aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+#ifdef XP_WIN
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
+  if (NS_WARN_IF(!global)) {
+    return NS_ERROR_FAILURE;
+  }
+  ErrorResult erv;
+  RefPtr<Promise> promise = Promise::Create(global, erv);
+  if (NS_WARN_IF(erv.Failed())) {
+    return erv.StealNSResult();
+  }
+
+  if (!mDiskInfoPromise) {
+    RefPtr<nsISerialEventTarget> backgroundET = GetBackgroundTarget();
+    nsCOMPtr<nsIFile> greDir;
+    nsCOMPtr<nsIFile> winDir;
+    nsCOMPtr<nsIFile> profDir;
+    nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(greDir));
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+    rv = NS_GetSpecialDirectory(NS_WIN_WINDOWS_DIR, getter_AddRefs(winDir));
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+    rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
+                                getter_AddRefs(profDir));
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+    mDiskInfoPromise =
+        InvokeAsync(backgroundET, __func__, [greDir, winDir, profDir]() {
+          DiskInfo info;
+          nsresult rv = CollectDiskInfo(greDir, winDir, profDir, info);
+          if (NS_SUCCEEDED(rv)) {
+            return DiskInfoPromise::CreateAndResolve(info, __func__);
+          }
+          return DiskInfoPromise::CreateAndReject(rv, __func__);
+        });
+  }
+
+  // Chain the new promise to the extant mozpromise.
+  RefPtr<Promise> capturedPromise = promise;
+  mDiskInfoPromise->Then(
+      GetMainThreadSerialEventTarget(), __func__,
+      [capturedPromise](const DiskInfo& info) {
+        AutoJSAPI jsapi;
+        if (NS_WARN_IF(!jsapi.Init(capturedPromise->GetGlobalObject()))) {
+          capturedPromise->MaybeReject(NS_ERROR_UNEXPECTED);
+          return;
+        }
+        JSContext* cx = jsapi.cx();
+        JS::Rooted<JSObject*> jsInfo(cx, JS_NewPlainObject(cx));
+        // Store data in the rv:
+        bool succeededSettingAllObjects =
+            jsInfo && GetJSObjForDiskInfo(cx, jsInfo, info.binary, "binary") &&
+            GetJSObjForDiskInfo(cx, jsInfo, info.profile, "profile") &&
+            GetJSObjForDiskInfo(cx, jsInfo, info.system, "system");
+        // The above can fail due to OOM
+        if (!succeededSettingAllObjects) {
+          JS_ClearPendingException(cx);
+          capturedPromise->MaybeReject(NS_ERROR_FAILURE);
+          return;
+        }
+
+        JS::Rooted<JS::Value> val(cx, JS::ObjectValue(*jsInfo));
+        capturedPromise->MaybeResolve(val);
+      },
+      [capturedPromise](const nsresult rv) {
+        capturedPromise->MaybeReject(rv);
+      });
+
+  promise.forget(aResult);
+#endif
+  return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(nsSystemInfo, nsHashPropertyBag, nsISystemInfo)
+
+NS_IMETHODIMP
+nsSystemInfo::GetCountryCode(JSContext* aCx, Promise** aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+#if defined(XP_MACOSX) || defined(XP_WIN)
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
+  if (NS_WARN_IF(!global)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  ErrorResult erv;
+  RefPtr<Promise> promise = Promise::Create(global, erv);
+  if (NS_WARN_IF(erv.Failed())) {
+    return erv.StealNSResult();
+  }
+
+  if (!mCountryCodePromise) {
+    RefPtr<nsISerialEventTarget> backgroundET = GetBackgroundTarget();
+
+    mCountryCodePromise = InvokeAsync(backgroundET, __func__, []() {
+      nsAutoString countryCode;
+#  ifdef XP_MACOSX
+      nsresult rv = GetSelectedCityInfo(countryCode);
+#  endif
+#  ifdef XP_WIN
+      nsresult rv = CollectCountryCode(countryCode);
+#  endif
+
+      if (NS_SUCCEEDED(rv)) {
+        return CountryCodePromise::CreateAndResolve(countryCode, __func__);
+      }
+      return CountryCodePromise::CreateAndReject(rv, __func__);
+    });
+  }
+
+  RefPtr<Promise> capturedPromise = promise;
+  mCountryCodePromise->Then(
+      GetMainThreadSerialEventTarget(), __func__,
+      [capturedPromise](const nsString& countryCode) {
+        AutoJSAPI jsapi;
+        if (NS_WARN_IF(!jsapi.Init(capturedPromise->GetGlobalObject()))) {
+          capturedPromise->MaybeReject(NS_ERROR_UNEXPECTED);
+          return;
+        }
+        JSContext* cx = jsapi.cx();
+        JS::Rooted<JSString*> jsCountryCode(
+            cx, JS_NewUCStringCopyZ(cx, countryCode.get()));
+
+        JS::Rooted<JS::Value> val(cx, JS::StringValue(jsCountryCode));
+        capturedPromise->MaybeResolve(val);
+      },
+      [capturedPromise](const nsresult rv) {
+        // Resolve with null when countryCode is not available from the system
+        capturedPromise->MaybeResolve(JS::NullHandleValue);
+      });
+
+  promise.forget(aResult);
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemInfo::GetProcessInfo(JSContext* aCx, Promise** aResult) {
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+
+  if (!XRE_IsParentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsIGlobalObject* global = xpc::CurrentNativeGlobal(aCx);
+  if (NS_WARN_IF(!global)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  ErrorResult erv;
+  RefPtr<Promise> promise = Promise::Create(global, erv);
+  if (NS_WARN_IF(erv.Failed())) {
+    return erv.StealNSResult();
+  }
+
+  if (!mProcessInfoPromise) {
+    RefPtr<nsISerialEventTarget> backgroundET = GetBackgroundTarget();
+
+    mProcessInfoPromise = InvokeAsync(backgroundET, __func__, []() {
+      ProcessInfo info;
+      nsresult rv = CollectProcessInfo(info);
+      if (NS_SUCCEEDED(rv)) {
+        return ProcessInfoPromise::CreateAndResolve(info, __func__);
+      }
+      return ProcessInfoPromise::CreateAndReject(rv, __func__);
+    });
+  };
+
+  // Chain the new promise to the extant mozpromise
+  RefPtr<Promise> capturedPromise = promise;
+  mProcessInfoPromise->Then(
+      GetMainThreadSerialEventTarget(), __func__,
+      [capturedPromise](const ProcessInfo& info) {
+        AutoJSAPI jsapi;
+        if (NS_WARN_IF(!jsapi.Init(capturedPromise->GetGlobalObject()))) {
+          capturedPromise->MaybeReject(NS_ERROR_UNEXPECTED);
+          return;
+        }
+        JSContext* cx = jsapi.cx();
+        JS::Rooted<JS::Value> val(
+            cx, JS::ObjectValue(*GetJSObjForProcessInfo(cx, info)));
+        capturedPromise->MaybeResolve(val);
+      },
+      [capturedPromise](const nsresult rv) {
+        // Resolve with null when installYear is not available from the system
+        capturedPromise->MaybeResolve(JS::NullHandleValue);
+      });
+
+  promise.forget(aResult);
+
+  return NS_OK;
+}