mirror of
https://github.com/classilla/tenfourfox.git
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113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Compatibility.h"
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#include "nsWinUtils.h"
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#include "Statistics.h"
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#include "mozilla/Preferences.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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/**
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* Return true if module version is lesser than the given version.
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*/
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bool
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IsModuleVersionLessThan(HMODULE aModuleHandle, DWORD aMajor, DWORD aMinor)
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{
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wchar_t fileName[MAX_PATH];
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::GetModuleFileNameW(aModuleHandle, fileName, MAX_PATH);
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DWORD dummy = 0;
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DWORD length = ::GetFileVersionInfoSizeW(fileName, &dummy);
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LPBYTE versionInfo = new BYTE[length];
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::GetFileVersionInfoW(fileName, 0, length, versionInfo);
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UINT uLen;
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VS_FIXEDFILEINFO* fixedFileInfo = nullptr;
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::VerQueryValueW(versionInfo, L"\\", (LPVOID*)&fixedFileInfo, &uLen);
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DWORD dwFileVersionMS = fixedFileInfo->dwFileVersionMS;
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DWORD dwFileVersionLS = fixedFileInfo->dwFileVersionLS;
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delete [] versionInfo;
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DWORD dwLeftMost = HIWORD(dwFileVersionMS);
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DWORD dwSecondRight = HIWORD(dwFileVersionLS);
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return (dwLeftMost < aMajor ||
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(dwLeftMost == aMajor && dwSecondRight < aMinor));
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}
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////////////////////////////////////////////////////////////////////////////////
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// Compatibility
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////////////////////////////////////////////////////////////////////////////////
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uint32_t Compatibility::sConsumers = Compatibility::UNKNOWN;
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void
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Compatibility::Init()
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{
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// Note we collect some AT statistics/telemetry here for convenience.
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HMODULE jawsHandle = ::GetModuleHandleW(L"jhook");
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if (jawsHandle)
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sConsumers |= (IsModuleVersionLessThan(jawsHandle, 8, 2173)) ?
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OLDJAWS : JAWS;
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if (::GetModuleHandleW(L"gwm32inc"))
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sConsumers |= WE;
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if (::GetModuleHandleW(L"dolwinhk"))
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sConsumers |= DOLPHIN;
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if (::GetModuleHandleW(L"STSA32"))
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sConsumers |= SEROTEK;
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if (::GetModuleHandleW(L"nvdaHelperRemote"))
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sConsumers |= NVDA;
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if (::GetModuleHandleW(L"OsmHooks"))
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sConsumers |= COBRA;
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if (::GetModuleHandleW(L"WebFinderRemote"))
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sConsumers |= ZOOMTEXT;
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if (::GetModuleHandleW(L"Kazahook"))
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sConsumers |= KAZAGURU;
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if (::GetModuleHandleW(L"TextExtractorImpl32") ||
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::GetModuleHandleW(L"TextExtractorImpl64"))
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sConsumers |= YOUDAO;
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if (::GetModuleHandleW(L"uiautomation") ||
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::GetModuleHandleW(L"uiautomationcore"))
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sConsumers |= UIAUTOMATION;
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// If we have a known consumer remove the unknown bit.
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if (sConsumers != Compatibility::UNKNOWN)
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sConsumers ^= Compatibility::UNKNOWN;
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// Gather telemetry
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uint32_t temp = sConsumers;
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for (int i = 0; temp; i++) {
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if (temp & 0x1)
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statistics::A11yConsumers(i);
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temp >>= 1;
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}
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// Turn off new tab switching for Jaws and WE.
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if (sConsumers & (JAWS | OLDJAWS | WE)) {
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// Check to see if the pref for disallowing CtrlTab is already set. If so,
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// bail out (respect the user settings). If not, set it.
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if (!Preferences::HasUserValue("browser.ctrlTab.disallowForScreenReaders"))
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Preferences::SetBool("browser.ctrlTab.disallowForScreenReaders", true);
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}
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}
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