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/* 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 "nsInstallationDirLayout.h"
#include "InstallationDirLayout.h"
#include "mozilla/Logging.h"
#ifdef XP_WIN
# include <windows.h>
#endif
static mozilla::LazyLogModule sInstallDirLayoutLog("InstallDirLayout");
static const wchar_t* dllName = L"InstallationDirLayout.dll";
static InstallationDirLayoutType sLayoutType =
InstallationDirLayoutType::Unknown;
using FuncType = InstallationDirLayoutType (*)();
namespace mozilla {
nsresult InitializeInstallationDirLayout() {
#ifdef XP_WIN
HINSTANCE hRuntimeLibrary = LoadLibraryExW(dllName, nullptr, 0);
if (!hRuntimeLibrary) {
MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
("Failed to open installation directory layout dll"));
return NS_ERROR_FAILURE;
}
FuncType dirLayoutFunc =
(FuncType)GetProcAddress(hRuntimeLibrary, "GetInstallationDirLayoutType");
if (!dirLayoutFunc) {
MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
("GetInstallationDirLayoutType function not found in installation "
"directory layout dll"));
FreeLibrary(hRuntimeLibrary);
return NS_ERROR_FAILURE;
}
sLayoutType = dirLayoutFunc();
bool freeResult = FreeLibrary(hRuntimeLibrary);
if (!freeResult) {
MOZ_LOG(sInstallDirLayoutLog, LogLevel::Warning,
("FreeLibrary returned false"));
// Not a fatal problem.
}
return NS_OK;
#else
sLayoutType = InstallationDirLayoutType::Single;
return NS_OK;
#endif
}
NS_IMPL_ISUPPORTS(InstallationDirLayout, nsIInstallationDirLayout)
NS_IMETHODIMP
InstallationDirLayout::GetIsInstallationLayoutVersioned(
bool* installationDirIsVersioned) {
bool isVersioned;
switch (sLayoutType) {
case InstallationDirLayoutType::Single:
isVersioned = false;
break;
case InstallationDirLayoutType::Versioned:
isVersioned = true;
break;
default:
MOZ_LOG(sInstallDirLayoutLog, LogLevel::Error,
("Unexpected value for installation dir layout type: %d",
(int)sLayoutType));
return NS_ERROR_ILLEGAL_VALUE;
}
*installationDirIsVersioned = isVersioned;
return NS_OK;
}
} // namespace mozilla
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