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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#undef UNICODE
#undef _UNICODE
#define _WIN32_WINDOWS 0x0410
#ifdef _MSC_VER
#pragma warning(push, 1) /* disable warnings within system headers */
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <msiquery.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#include <malloc.h>
#include <assert.h>
#include <tchar.h>
#include <string>
using namespace std;
namespace
{
// The provided GUID must be without surounding '{}'
string GetGuidPart(const string& guid, int index)
{
assert((guid.length() == 36) && "No GUID or wrong format!");
assert(((index > -1) && (index < 5)) && "Out of range!");
if (index == 0) return string(guid.c_str(), 8);
if (index == 1) return string(guid.c_str() + 9, 4);
if (index == 2) return string(guid.c_str() + 14, 4);
if (index == 3) return string(guid.c_str() + 19, 4);
if (index == 4) return string(guid.c_str() + 24, 12);
return string();
}
void Swap(char* p1, char* p2)
{
char tmp = *p1;
*p1 = *p2;
*p2 = tmp;
}
string Invert(const string& str)
{
char* buff = reinterpret_cast<char*>(_alloca(str.length()));
strncpy(buff, str.c_str(), str.length());
char* front = buff;
char* back = buff + str.length() - 1;
while (front < back)
Swap(front++, back--);
return string(buff, str.length());
}
// Convert the upgrade code (which is a GUID) according
// to the way the windows installer does when writing it
// to the registry
// The first 8 bytes will be inverted, from the last
// 8 bytes always the nibbles will be inverted for further
// details look in the MSDN under compressed registry keys
string ConvertGuid(const string& guid)
{
string convertedGuid;
string part = GetGuidPart(guid, 0);
convertedGuid = Invert(part);
part = GetGuidPart(guid, 1);
convertedGuid += Invert(part);
part = GetGuidPart(guid, 2);
convertedGuid += Invert(part);
part = GetGuidPart(guid, 3);
convertedGuid += Invert(string(part.c_str(), 2));
convertedGuid += Invert(string(part.c_str() + 2, 2));
part = GetGuidPart(guid, 4);
int pos = 0;
for (int i = 0; i < 6; i++)
{
convertedGuid += Invert(string(part.c_str() + pos, 2));
pos += 2;
}
return convertedGuid;
}
string GetMsiProperty(MSIHANDLE handle, const string& sProperty)
{
string result;
TCHAR szDummy[1] = TEXT("");
DWORD nChars = 0;
if (MsiGetProperty(handle, sProperty.c_str(), szDummy, &nChars) == ERROR_MORE_DATA)
{
DWORD nBytes = ++nChars * sizeof(TCHAR);
LPTSTR buffer = reinterpret_cast<LPTSTR>(_alloca(nBytes));
ZeroMemory( buffer, nBytes );
MsiGetProperty(handle, sProperty.c_str(), buffer, &nChars);
result = buffer;
}
return result;
}
inline bool IsSetMsiProperty(MSIHANDLE handle, const string& sProperty)
{
return (GetMsiProperty(handle, sProperty).length() > 0);
}
inline void UnsetMsiProperty(MSIHANDLE handle, const string& sProperty)
{
MsiSetProperty(handle, sProperty.c_str(), NULL);
}
inline void SetMsiProperty(MSIHANDLE handle, const string& sProperty)
{
MsiSetProperty(handle, sProperty.c_str(), TEXT("1"));
}
bool RegistryKeyHasUpgradeSubKey(
HKEY hRootKey, const string& regKey, const string& upgradeKey)
{
HKEY hKey;
if (RegOpenKey(hRootKey, regKey.c_str(), &hKey) == ERROR_SUCCESS)
{
DWORD nSubKeys;
DWORD lLongestSubKey;
if (RegQueryInfoKey(
hKey, NULL, NULL, NULL, &nSubKeys, &lLongestSubKey, NULL, NULL, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
{
LPTSTR buffer = reinterpret_cast<LPTSTR>(_alloca(lLongestSubKey + 1));
for (DWORD i = 0; i < nSubKeys; i++)
{
LONG ret = RegEnumKey(hKey, i, buffer, lLongestSubKey + 1);
if ((ret == ERROR_SUCCESS) && (buffer == upgradeKey))
return true;
}
}
}
return false;
}
} // namespace
extern "C" UINT __stdcall SetProductInstallMode(MSIHANDLE handle)
{
string upgradeCode = GetMsiProperty(handle, TEXT("UpgradeCode"));
upgradeCode = ConvertGuid(string(upgradeCode.c_str() + 1, upgradeCode.length() - 2));
//MessageBox(NULL, upgradeCode.c_str(), TEXT("Debug"), MB_OK);
if (RegistryKeyHasUpgradeSubKey(
HKEY_CURRENT_USER,
TEXT("Software\\Microsoft\\Installer\\UpgradeCodes"),
upgradeCode) && IsSetMsiProperty(handle, TEXT("ALLUSERS")))
{
UnsetMsiProperty(handle, TEXT("ALLUSERS"));
//MessageBox(NULL, "ALLUSERS removed", "DEBUG", MB_OK);
}
else if (RegistryKeyHasUpgradeSubKey(
HKEY_LOCAL_MACHINE,
TEXT("Software\\Classes\\Installer\\UpgradeCodes"),
upgradeCode) && !IsSetMsiProperty(handle, TEXT("ALLUSERS")))
{
SetMsiProperty(handle, TEXT("ALLUSERS"));
//MessageBox(NULL, "ALLUSERS set", "DEBUG", MB_OK);
}
return ERROR_SUCCESS;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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