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Windows: Avoid unnecessarily update of system encryption SetupConfig related files if there content didn't change

This commit is contained in:
Mounir IDRASSI 2019-10-25 01:29:04 +02:00
parent 4ea4f36010
commit 318b00b6a2
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GPG Key ID: 02C30AE90FAE4A6F
1 changed files with 54 additions and 5 deletions
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59
src/Common/BootEncryption.cpp
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@ -3151,20 +3151,69 @@ namespace VeraCrypt
if (bForInstall)
{
/* Before updating files, we check first if they already have the expected content. If yes, then we don't perform
* any write operation to avoid modifying file timestamps Unnecessarily.
*/
bool bSkipWrite = false;
wchar_t wszBuffer [2 * TC_MAX_PATH] = {0};
wstring szPathParam = L"\"";
szPathParam += szInstallPath;
szPathParam += L"\"";
WritePrivateProfileStringW (L"SetupConfig", L"ReflectDrivers", szPathParam.c_str(), szSetupconfigLocation);
if ( (0 < GetPrivateProfileStringW (L"SetupConfig", L"ReflectDrivers", L"", wszBuffer, ARRAYSIZE (wszBuffer), szSetupconfigLocation))
&& (_wcsicmp (wszBuffer, szPathParam.c_str()) == 0)
)
{
bSkipWrite = true;
}
if (!bSkipWrite)
WritePrivateProfileStringW (L"SetupConfig", L"ReflectDrivers", szPathParam.c_str(), szSetupconfigLocation);
bSkipWrite = false;
szPathParam = GetProgramConfigPath (L"SetupComplete.cmd");
FILE* scriptFile = _wfopen (szPathParam.c_str(), L"w");
wstring wszExpectedValue = L"\"";
wszExpectedValue += szInstallPath;
wszExpectedValue += L"\\VeraCrypt.exe\" /PostOOBE";
FILE* scriptFile = _wfopen (szPathParam.c_str(), L"r");
if (scriptFile)
{
fwprintf (scriptFile, L"\"%s\\VeraCrypt.exe\" /PostOOBE\n", szInstallPath);
fclose (scriptFile);
long fileSize = _filelength (_fileno (scriptFile));
if (fileSize < (2 * TC_MAX_PATH))
{
fgetws (wszBuffer, ARRAYSIZE (wszBuffer), scriptFile);
WritePrivateProfileStringW (L"SetupConfig", L"PostOOBE", szPathParam.c_str(), szSetupconfigLocation);
if (wszBuffer[wcslen (wszBuffer) - 1] == L'\n')
wszBuffer[wcslen (wszBuffer) - 1] = 0;
bSkipWrite = (0 == _wcsicmp (wszBuffer, wszExpectedValue.c_str()));
}
fclose (scriptFile);
}
if (!bSkipWrite)
{
scriptFile = _wfopen (szPathParam.c_str(), L"w");
if (scriptFile)
{
fwprintf (scriptFile, L"%s\n", wszExpectedValue.c_str());
fclose (scriptFile);
}
}
bSkipWrite = false;
if ( (0 < GetPrivateProfileStringW (L"SetupConfig", L"PostOOBE", L"", wszBuffer, ARRAYSIZE (wszBuffer), szSetupconfigLocation))
&& (_wcsicmp (wszBuffer, szPathParam.c_str()) == 0)
)
{
bSkipWrite = true;
}
if (!bSkipWrite)
WritePrivateProfileStringW (L"SetupConfig", L"PostOOBE", szPathParam.c_str(), szSetupconfigLocation);
}
else
{