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Windows: code refactoring and convert NTSTATUS error code to WIN32 equivalent before displaying error message.

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This commit is contained in:
Mounir IDRASSI 2019-10-27 01:39:37 +02:00
parent 89e2547851
commit 2722b46530
No known key found for this signature in database
GPG Key ID: 02C30AE90FAE4A6F
2 changed files with 26 additions and 41 deletions
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59
src/Common/BootEncryption.cpp
View File

@ -2478,9 +2478,10 @@ namespace VeraCrypt
static const wchar_t* EfiVarGuid = L"{8BE4DF61-93CA-11D2-AA0D-00E098032B8C}";
void
GetVolumeESP(wstring& path)
GetVolumeESP(wstring& path, wstring& bootVolumePath)
{
static wstring g_EspPath;
static wstring g_BootVolumePath;
static bool g_EspPathInitialized = false;
if (!g_EspPathInitialized)
@ -2501,17 +2502,29 @@ namespace VeraCrypt
res = NtQuerySystemInformationPtr((SYSTEM_INFORMATION_CLASS)SYSPARTITIONINFORMATION, tempBuf, sizeof(tempBuf), &len);
if (res != S_OK)
{
/* try to convert the returned NTSTATUS to a WIN32 system error using RtlNtStatusToDosError */
RtlNtStatusToDosErrorFn RtlNtStatusToDosErrorPtr = (RtlNtStatusToDosErrorFn) GetProcAddress (GetModuleHandle (L"ntdll.dll"), "RtlNtStatusToDosError");
if (RtlNtStatusToDosErrorPtr)
{
ULONG win32err = RtlNtStatusToDosErrorPtr (res);
if (win32err != ERROR_MR_MID_NOT_FOUND)
res = (NTSTATUS) win32err;
}
SetLastError (res);
throw SystemException (SRC_POS);
}
PUNICODE_STRING pStr = (PUNICODE_STRING) tempBuf;
g_BootVolumePath = pStr->Buffer;
g_EspPath = L"\\\\?";
g_EspPath += &pStr->Buffer[7];
g_EspPathInitialized = true;
}
path = g_EspPath;
bootVolumePath = g_BootVolumePath;
}
std::string ReadESPFile (LPCWSTR szFilePath, bool bSkipUTF8BOM)
@ -2521,9 +2534,9 @@ namespace VeraCrypt
ByteArray fileContent;
DWORD dwSize = 0, dwOffset = 0;
std::wstring pathESP;
std::wstring pathESP, bootVolumePath;
GetVolumeESP(pathESP);
GetVolumeESP(pathESP, bootVolumePath);
if (szFilePath[0] != L'\\')
pathESP += L"\\";
File f(pathESP + szFilePath, true);
@ -2552,7 +2565,7 @@ namespace VeraCrypt
ByteArray fileContent;
DWORD dwSize = dwDataLen, dwOffset = 0;
std::wstring pathESP;
std::wstring pathESP, bootVolumePath;
if (bAddUTF8BOM)
{
@ -2560,7 +2573,7 @@ namespace VeraCrypt
dwOffset = 3;
}
GetVolumeESP(pathESP);
GetVolumeESP(pathESP, bootVolumePath);
if (szFilePath[0] != L'\\')
pathESP += L"\\";
@ -2580,42 +2593,12 @@ namespace VeraCrypt
ZeroMemory (&partInfo, sizeof (partInfo));
m_bMounted = false;
bDeviceInfoValid = false;
bBootVolumePathSelected = false;
}
void EfiBoot::SelectBootVolumeESP() {
NTSTATUS res;
ULONG len;
memset(tempBuf, 0, sizeof(tempBuf));
// Load NtQuerySystemInformation function point
if (!NtQuerySystemInformationPtr)
{
NtQuerySystemInformationPtr = (NtQuerySystemInformationFn) GetProcAddress (GetModuleHandle (L"ntdll.dll"), "NtQuerySystemInformation");
if (!NtQuerySystemInformationPtr)
throw SystemException (SRC_POS);
}
res = NtQuerySystemInformationPtr((SYSTEM_INFORMATION_CLASS)SYSPARTITIONINFORMATION, tempBuf, sizeof(tempBuf), &len);
if (res != S_OK)
{
SetLastError (res);
throw SystemException (SRC_POS);
}
PUNICODE_STRING pStr = (PUNICODE_STRING) tempBuf;
BootVolumePath = pStr->Buffer;
EfiBootPartPath = L"\\\\?";
EfiBootPartPath += &pStr->Buffer[7];
bBootVolumePathSelected = true;
}
void EfiBoot::PrepareBootPartition(bool bDisableException) {
if (!bBootVolumePathSelected) {
SelectBootVolumeESP();
}
GetVolumeESP (EfiBootPartPath, BootVolumePath);
std::wstring devicePath = L"\\\\?\\GLOBALROOT";
devicePath += BootVolumePath;
Device dev(devicePath.c_str(), TRUE);

8
src/Common/BootEncryption.h
View File

@ -29,6 +29,10 @@ typedef NTSTATUS (WINAPI *NtQuerySystemInformationFn)(
PULONG ReturnLength
);
typedef ULONG (WINAPI *RtlNtStatusToDosErrorFn)(
NTSTATUS Status
);
using namespace std;
namespace VeraCrypt
@ -193,7 +197,7 @@ namespace VeraCrypt
static BOOL IsPostExecFileField (const string& szFieldValue, wstring& filePath);
};
void GetVolumeESP(wstring& path);
void GetVolumeESP(wstring& path, wstring& bootVolumePath);
std::string ReadESPFile (LPCWSTR szFilePath, bool bSkipUTF8BOM);
void WriteESPFile (LPCWSTR szFilePath, LPBYTE pbData, DWORD dwDataLen, bool bAddUTF8BOM);
@ -221,7 +225,6 @@ namespace VeraCrypt
BOOL UpdateConfig (const wchar_t* name, int pim, int hashAlgo, HWND hwndDlg);
BOOL WriteConfig (const wchar_t* name, bool preserveUserConfig, int pim, int hashAlgo, const char* passPromptMsg, HWND hwndDlg);
BOOL DelDir(const wchar_t* name);
void SelectBootVolumeESP();
PSTORAGE_DEVICE_NUMBER GetStorageDeviceNumber () { if (bDeviceInfoValid) return &sdn; else { SetLastError (ERROR_INVALID_DRIVE); throw SystemException(SRC_POS);}}
protected:
@ -231,7 +234,6 @@ namespace VeraCrypt
PARTITION_INFORMATION_EX partInfo;
bool bDeviceInfoValid;
WCHAR tempBuf[1024];
bool bBootVolumePathSelected;
std::wstring BootVolumePath;
};