The Tor Browser: xpcom/base/nsSystemInfo.cpp@6474c204b198 (annotated)

xpcom/base/nsSystemInfo.cpp@6474c204b198 (annotated)

xpcom/base/nsSystemInfo.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* 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 "nsSystemInfo.h"
 #include "prsystem.h"
 #include "prio.h"
 #include "prprf.h"
 #include "mozilla/SSE.h"
 #include "mozilla/arm.h"
 #ifdef XP_WIN
 #include <windows.h>
 #include <winioctl.h>
 #include "base/scoped_handle_win.h"
 #include "nsAppDirectoryServiceDefs.h"
 #include "nsDirectoryServiceDefs.h"
 #include "nsDirectoryServiceUtils.h"
 #endif
 #ifdef MOZ_WIDGET_GTK
 #include <gtk/gtk.h>
 #endif
 #ifdef MOZ_WIDGET_ANDROID
 #include "AndroidBridge.h"
 using namespace mozilla::widget::android;
 #endif
 #ifdef MOZ_WIDGET_GONK
 #include <sys/system_properties.h>
 #endif
 #ifdef ANDROID
 extern "C" {
 NS_EXPORT int android_sdk_version;
 }
 #endif
 // Slot for NS_InitXPCOM2 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;
 #if defined(XP_WIN)
 namespace {
 nsresult GetHDDInfo(const char* aSpecialDirName, nsAutoCString& aModel,
                     nsAutoCString& aRevision)
 {
     aModel.Truncate();
     aRevision.Truncate();
     nsCOMPtr<nsIFile> profDir;
     nsresult rv = NS_GetSpecialDirectory(aSpecialDirName,
                                          getter_AddRefs(profDir));
     NS_ENSURE_SUCCESS(rv, rv);
     nsAutoString profDirPath;
     rv = profDir->GetPath(profDirPath);
     NS_ENSURE_SUCCESS(rv, rv);
     wchar_t volumeMountPoint[MAX_PATH] = {L'\\', L'\\', L'.', L'\\'};
     const size_t PREFIX_LEN = 4;
     if (!::GetVolumePathNameW(profDirPath.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;
     }
     // 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) {
         aModel = reinterpret_cast<char*>(deviceOutput) +
                      deviceOutput->VendorIdOffset;
     }
     if (deviceOutput->ProductIdOffset) {
         aModel += reinterpret_cast<char*>(deviceOutput) +
                       deviceOutput->ProductIdOffset;
     }
     aModel.CompressWhitespace();
     if (deviceOutput->ProductRevisionOffset) {
         aRevision = reinterpret_cast<char*>(deviceOutput) +
                         deviceOutput->ProductRevisionOffset;
         aRevision.CompressWhitespace();
     }
     free(deviceOutput);
     return NS_OK;
 }
 } // anonymous namespace
 #endif // defined(XP_WIN)
 using namespace mozilla;
 nsSystemInfo::nsSystemInfo()
 {
 }
 nsSystemInfo::~nsSystemInfo()
 {
 }
 // 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 },
     // ARM-specific bits.
     { "hasEDSP", mozilla::supports_edsp },
     { "hasARMv6", mozilla::supports_armv6 },
     { "hasARMv7", mozilla::supports_armv7 },
     { "hasNEON", mozilla::supports_neon }
 };
 nsresult
 nsSystemInfo::Init()
 {
     nsresult rv;
     static const struct {
       PRSysInfo cmd;
       const char *name;
     } items[] = {
       { PR_SI_SYSNAME, "name" },
       { PR_SI_HOSTNAME, "host" },
       { PR_SI_ARCHITECTURE, "arch" },
       { PR_SI_RELEASE, "version" }
     };
     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");
       }
     }
 #if defined(XP_WIN) && defined(MOZ_METRO)
     // Create "hasWindowsTouchInterface" property.
     nsAutoString version;
     rv = GetPropertyAsAString(NS_LITERAL_STRING("version"), version);
     NS_ENSURE_SUCCESS(rv, rv);
     double versionDouble = version.ToDouble(&rv);
     NS_ENSURE_SUCCESS(rv, rv);
     rv = SetPropertyAsBool(NS_ConvertASCIItoUTF16("hasWindowsTouchInterface"),
       versionDouble >= 6.2);
     NS_ENSURE_SUCCESS(rv, rv);
 #else
     rv = SetPropertyAsBool(NS_ConvertASCIItoUTF16("hasWindowsTouchInterface"), false);
     NS_ENSURE_SUCCESS(rv, rv);
 #endif
     // Additional informations not available through PR_GetSystemInfo.
     SetInt32Property(NS_LITERAL_STRING("pagesize"), PR_GetPageSize());
     SetInt32Property(NS_LITERAL_STRING("pageshift"), PR_GetPageShift());
     SetInt32Property(NS_LITERAL_STRING("memmapalign"), PR_GetMemMapAlignment());
     SetInt32Property(NS_LITERAL_STRING("cpucount"), PR_GetNumberOfProcessors());
     SetUint64Property(NS_LITERAL_STRING("memsize"), PR_GetPhysicalMemorySize());
     SetUint32Property(NS_LITERAL_STRING("umask"), nsSystemInfo::gUserUmask);
     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 isWow64;
     BOOL gotWow64Value = IsWow64Process(GetCurrentProcess(), &isWow64);
     NS_WARN_IF_FALSE(gotWow64Value, "IsWow64Process failed");
     if (gotWow64Value) {
       rv = SetPropertyAsBool(NS_LITERAL_STRING("isWow64"), !!isWow64);
       if (NS_WARN_IF(NS_FAILED(rv)))
         return rv;
     }
     nsAutoCString hddModel, hddRevision;
     if (NS_SUCCEEDED(GetHDDInfo(NS_APP_USER_PROFILE_50_DIR, hddModel,
                                 hddRevision))) {
       rv = SetPropertyAsACString(NS_LITERAL_STRING("profileHDDModel"), hddModel);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = SetPropertyAsACString(NS_LITERAL_STRING("profileHDDRevision"),
                                  hddRevision);
       NS_ENSURE_SUCCESS(rv, rv);
     }
     if (NS_SUCCEEDED(GetHDDInfo(NS_GRE_DIR, hddModel, hddRevision))) {
       rv = SetPropertyAsACString(NS_LITERAL_STRING("binHDDModel"), hddModel);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = SetPropertyAsACString(NS_LITERAL_STRING("binHDDRevision"),
                                  hddRevision);
       NS_ENSURE_SUCCESS(rv, rv);
     }
     if (NS_SUCCEEDED(GetHDDInfo(NS_WIN_WINDOWS_DIR, hddModel, hddRevision))) {
       rv = SetPropertyAsACString(NS_LITERAL_STRING("winHDDModel"), hddModel);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = SetPropertyAsACString(NS_LITERAL_STRING("winHDDRevision"),
                                  hddRevision);
       NS_ENSURE_SUCCESS(rv, rv);
     }
 #endif
 #if defined(MOZ_WIDGET_GTK)
     // This must be done here because NSPR can only separate OS's when compiled, not libraries.
     char* gtkver = PR_smprintf("GTK %u.%u.%u", gtk_major_version, gtk_minor_version, gtk_micro_version);
     if (gtkver) {
       rv = SetPropertyAsACString(NS_LITERAL_STRING("secondaryLibrary"),
                                  nsDependentCString(gtkver));
       PR_smprintf_free(gtkver);
       if (NS_WARN_IF(NS_FAILED(rv)))
         return rv;
     }
 #endif
 #ifdef MOZ_WIDGET_ANDROID
     if (mozilla::AndroidBridge::Bridge()) {
         nsAutoString str;
         if (mozilla::AndroidBridge::Bridge()->GetStaticStringField("android/os/Build", "MODEL", str))
             SetPropertyAsAString(NS_LITERAL_STRING("device"), str);
         if (mozilla::AndroidBridge::Bridge()->GetStaticStringField("android/os/Build", "MANUFACTURER", str))
             SetPropertyAsAString(NS_LITERAL_STRING("manufacturer"), str);
         if (mozilla::AndroidBridge::Bridge()->GetStaticStringField("android/os/Build$VERSION", "RELEASE", str))
             SetPropertyAsAString(NS_LITERAL_STRING("release_version"), str);
         int32_t version;
         if (!mozilla::AndroidBridge::Bridge()->GetStaticIntField("android/os/Build$VERSION", "SDK_INT", &version))
             version = 0;
         android_sdk_version = version;
         if (version >= 8 && mozilla::AndroidBridge::Bridge()->GetStaticStringField("android/os/Build", "HARDWARE", str))
             SetPropertyAsAString(NS_LITERAL_STRING("hardware"), str);
         bool isTablet = mozilla::widget::android::GeckoAppShell::IsTablet();
         SetPropertyAsBool(NS_LITERAL_STRING("tablet"), 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.
         rv = GetPropertyAsAString(NS_LITERAL_STRING("version"), str);
         if (NS_SUCCEEDED(rv)) {
             SetPropertyAsAString(NS_LITERAL_STRING("kernel_version"), str);
         }
         SetPropertyAsInt32(NS_LITERAL_STRING("version"), android_sdk_version);
     }
 #endif
 #ifdef MOZ_WIDGET_GONK
     char sdk[PROP_VALUE_MAX], characteristics[PROP_VALUE_MAX];
     if (__system_property_get("ro.build.version.sdk", sdk))
       android_sdk_version = atoi(sdk);
     if (__system_property_get("ro.build.characteristics", characteristics)) {
       if (!strcmp(characteristics, "tablet"))
         SetPropertyAsBool(NS_LITERAL_STRING("tablet"), true);
     }
 #endif
     return NS_OK;
 }
 void
 nsSystemInfo::SetInt32Property(const nsAString &aPropertyName,
                                const int32_t aValue)
 {
   NS_WARN_IF_FALSE(aValue > 0, "Unable to read system value");
   if (aValue > 0) {
 #ifdef DEBUG
     nsresult rv =
 #endif
       SetPropertyAsInt32(aPropertyName, aValue);
     NS_WARN_IF_FALSE(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_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Unable to set property");
 }
 void
 nsSystemInfo::SetUint64Property(const nsAString &aPropertyName,
                                 const uint64_t aValue)
 {
   NS_WARN_IF_FALSE(aValue > 0, "Unable to read system value");
   if (aValue > 0) {
 #ifdef DEBUG
     nsresult rv =
 #endif
       SetPropertyAsUint64(aPropertyName, aValue);
     NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Unable to set property");
   }
 }

The Tor Browser / annotate

xpcom/base/nsSystemInfo.cpp@6474c204b198 (annotated)

xpcom/base/nsSystemInfo.cpp