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95d0fd2e61
This exposes whether or not the installation is using versioned install directories through the value of Services.install_dir_layout.isInstallationLayoutVersioned Differential Revision: https://phabricator.services.mozilla.com/D237978
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/* 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 "nsInstallationDirLayout.h"
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#include "InstallationDirLayout.h"
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#include "mozilla/Logging.h"
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#ifdef XP_WIN
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# include <windows.h>
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#endif
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static mozilla::LazyLogModule sInstallDirLayoutLog("InstallDirLayout");
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static const wchar_t* dllName = L"InstallationDirLayout.dll";
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static InstallationDirLayoutType sLayoutType =
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InstallationDirLayoutType::Unknown;
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using FuncType = InstallationDirLayoutType (*)();
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namespace mozilla {
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nsresult InitializeInstallationDirLayout() {
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#ifdef XP_WIN
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HINSTANCE hRuntimeLibrary = LoadLibraryExW(dllName, nullptr, 0);
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if (!hRuntimeLibrary) {
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MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
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("Failed to open installation directory layout dll"));
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return NS_ERROR_FAILURE;
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}
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FuncType dirLayoutFunc =
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(FuncType)GetProcAddress(hRuntimeLibrary, "GetInstallationDirLayoutType");
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if (!dirLayoutFunc) {
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MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
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("GetInstallationDirLayoutType function not found in installation "
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"directory layout dll"));
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FreeLibrary(hRuntimeLibrary);
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return NS_ERROR_FAILURE;
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}
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sLayoutType = dirLayoutFunc();
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bool freeResult = FreeLibrary(hRuntimeLibrary);
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if (!freeResult) {
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MOZ_LOG(sInstallDirLayoutLog, LogLevel::Warning,
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("FreeLibrary returned false"));
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// Not a fatal problem.
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}
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return NS_OK;
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#else
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sLayoutType = InstallationDirLayoutType::Single;
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return NS_OK;
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#endif
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}
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NS_IMPL_ISUPPORTS(InstallationDirLayout, nsIInstallationDirLayout)
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NS_IMETHODIMP
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InstallationDirLayout::GetIsInstallationLayoutVersioned(
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bool* installationDirIsVersioned) {
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bool isVersioned;
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switch (sLayoutType) {
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case InstallationDirLayoutType::Single:
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isVersioned = false;
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break;
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case InstallationDirLayoutType::Versioned:
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isVersioned = true;
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break;
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default:
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MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
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("Unexpected value for installation dir layout type: %d",
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(int)sLayoutType));
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return NS_ERROR_ILLEGAL_VALUE;
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}
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*installationDirIsVersioned = isVersioned;
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return NS_OK;
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}
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} // namespace mozilla
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