VeraCrypt
aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMounir IDRASSI <mounir.idrassi@idrix.fr>2023-07-01 22:46:01 +0200
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2023-07-01 22:46:01 +0200
commit7a3daa389cf74d7a2439d943c63a888b62abfeb9 (patch)
tree00116f5e858f7ded8ae47a0f0505430bc4ea475c
parente28de414e0fbf1d7983c5edd3c91c83ea04fecbd (diff)
downloadVeraCrypt-7a3daa389cf74d7a2439d943c63a888b62abfeb9.tar.gz
VeraCrypt-7a3daa389cf74d7a2439d943c63a888b62abfeb9.zip
Windows: Make API formatting fallback to format.com in case of elevation. remove dead code from ExternalFormatFs
We also modify UacFormatNtfs/UacFormatFs to return actual error code in case of failure
Diffstat
-rw-r--r--src/Common/BaseCom.cpp10
-rw-r--r--src/Common/Format.c63
-rw-r--r--src/Format/FormatCom.cpp8
3 files changed, 24 insertions, 57 deletions
diff --git a/src/Common/BaseCom.cpp b/src/Common/BaseCom.cpp
index 32859b11..a9ece557 100644
--- a/src/Common/BaseCom.cpp
+++ b/src/Common/BaseCom.cpp
@@ -45,12 +45,13 @@ HRESULT CreateElevatedComObject (HWND hwnd, REFGUID guid, REFIID iid, void **ppv
BOOL ComGetInstanceBase (HWND hWnd, REFCLSID clsid, REFIID iid, void **tcServer)
{
BOOL r;
+ HRESULT hr;
if (IsUacSupported ())
{
while (true)
{
- r = CreateElevatedComObject (hWnd, clsid, iid, tcServer) == S_OK;
+ r = (hr = CreateElevatedComObject (hWnd, clsid, iid, tcServer)) == S_OK;
if (r)
break;
else
@@ -64,11 +65,16 @@ BOOL ComGetInstanceBase (HWND hWnd, REFCLSID clsid, REFIID iid, void **tcServer)
}
else
{
- r = CoCreateInstance (clsid, NULL, CLSCTX_LOCAL_SERVER, iid, tcServer) == S_OK;
+ r = (hr = CoCreateInstance (clsid, NULL, CLSCTX_LOCAL_SERVER, iid, tcServer)) == S_OK;
if (!r)
Error ("UAC_INIT_ERROR", hWnd);
}
+ if (!r)
+ {
+ SetLastError((DWORD) hr);
+ }
+
return r;
}
diff --git a/src/Common/Format.c b/src/Common/Format.c
index d5514bf9..bcbb94a1 100644
--- a/src/Common/Format.c
+++ b/src/Common/Format.c
@@ -799,18 +799,16 @@ error:
retCode = ExternalFormatFs (driveNo, volParams->clusterSize, fsType);
if (retCode != 0)
{
- wchar_t auxLine[2048];
- StringCbPrintfW (auxLine, sizeof(auxLine), GetString ("FORMAT_EXTERNAL_FAILED"), retCode);
- WarningDirect(auxLine, volParams->hwndDlg);
/* fallback to using FormatEx function from fmifs.dll */
if (!Silent && !IsAdmin () && IsUacSupported ())
retCode = UacFormatFs (volParams->hwndDlg, driveNo, volParams->clusterSize, fsType);
else
- retCode = FormatFs (driveNo, volParams->clusterSize, fsType);
+ retCode = FormatFs (driveNo, volParams->clusterSize, fsType, FALSE); /* no need to fallback to format.com since we have already tried it without elevation */
if (retCode != 0)
{
+ wchar_t auxLine[2048];
StringCbPrintfW (auxLine, sizeof(auxLine), GetString ("FORMATEX_API_FAILED"), FormatExGetMessage(retCode));
ErrorDirect(auxLine, volParams->hwndDlg);
}
@@ -1143,7 +1141,7 @@ BOOLEAN __stdcall FormatExCallback (int command, DWORD subCommand, PVOID paramet
return (FormatExError? FALSE : TRUE);
}
-int FormatFs (int driveNo, int clusterSize, int fsType)
+int FormatFs (int driveNo, int clusterSize, int fsType, BOOL bFallBackExternal)
{
wchar_t dllPath[MAX_PATH] = {0};
WCHAR dir[8] = { (WCHAR) driveNo + L'A', 0 };
@@ -1204,28 +1202,29 @@ int FormatFs (int driveNo, int clusterSize, int fsType)
Sleep (4000);
FreeLibrary (hModule);
+
+ if (FormatExError && bFallBackExternal)
+ {
+ return ExternalFormatFs (driveNo, clusterSize, fsType);
+ }
+
return FormatExError? FormatExErrorCommand : 0;
}
-int FormatNtfs (int driveNo, int clusterSize)
+int FormatNtfs (int driveNo, int clusterSize, BOOL bFallBackExternal)
{
- return FormatFs (driveNo, clusterSize, FILESYS_NTFS);
+ return FormatFs (driveNo, clusterSize, FILESYS_NTFS, bFallBackExternal);
}
/* call Windows format.com program to perform formatting */
int ExternalFormatFs (int driveNo, int clusterSize, int fsType)
{
wchar_t exePath[MAX_PATH] = {0};
- HANDLE hChildStd_IN_Rd = NULL;
- HANDLE hChildStd_IN_Wr = NULL;
- HANDLE hChildStd_OUT_Rd = NULL;
- HANDLE hChildStd_OUT_Wr = NULL;
WCHAR szFsFormat[16];
TCHAR szCmdline[2 * MAX_PATH];
STARTUPINFO siStartInfo;
PROCESS_INFORMATION piProcInfo;
BOOL bSuccess = FALSE;
- SECURITY_ATTRIBUTES saAttr;
int iRet = 0;
switch (fsType)
@@ -1243,35 +1242,6 @@ int ExternalFormatFs (int driveNo, int clusterSize, int fsType)
return FALSE;
}
- /* Set the bInheritHandle flag so pipe handles are inherited. */
- saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
- saAttr.bInheritHandle = TRUE;
- saAttr.lpSecurityDescriptor = NULL;
-
- /* Create a pipe for the child process's STDOUT. */
- if ( !CreatePipe(&hChildStd_OUT_Rd, &hChildStd_OUT_Wr, &saAttr, 0) )
- return FALSE;
-
- /* Ensure the read handle to the pipe for STDOUT is not inherited. */
- /* Create a pipe for the child process's STDIN. */
- if ( !SetHandleInformation(hChildStd_OUT_Rd, HANDLE_FLAG_INHERIT, 0)
- || !CreatePipe(&hChildStd_IN_Rd, &hChildStd_IN_Wr, &saAttr, 0))
- {
- CloseHandle (hChildStd_OUT_Rd);
- CloseHandle (hChildStd_OUT_Wr);
- return FALSE;
- }
-
- /* Ensure the write handle to the pipe for STDIN is not inherited. */
- if ( !SetHandleInformation(hChildStd_IN_Wr, HANDLE_FLAG_INHERIT, 0))
- {
- CloseHandle (hChildStd_OUT_Rd);
- CloseHandle (hChildStd_OUT_Wr);
- CloseHandle (hChildStd_IN_Rd);
- CloseHandle (hChildStd_IN_Wr);
- return FALSE;
- }
-
if (GetSystemDirectory (exePath, MAX_PATH))
{
StringCchCatW(exePath, ARRAYSIZE(exePath), L"\\format.com");
@@ -1302,15 +1272,11 @@ int ExternalFormatFs (int driveNo, int clusterSize, int fsType)
ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
/* Set up members of the STARTUPINFO structure.
- This structure specifies the STDIN and STDOUT handles for redirection.
*/
ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
siStartInfo.cb = sizeof(STARTUPINFO);
- siStartInfo.hStdError = hChildStd_OUT_Wr;
- siStartInfo.hStdOutput = hChildStd_OUT_Wr;
- siStartInfo.hStdInput = hChildStd_IN_Rd;
siStartInfo.wShowWindow = SW_HIDE;
- siStartInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
+ siStartInfo.dwFlags |= STARTF_USESHOWWINDOW;
/* Create the child process. */
bSuccess = CreateProcess(NULL,
@@ -1347,11 +1313,6 @@ int ExternalFormatFs (int driveNo, int clusterSize, int fsType)
iRet = (int) GetLastError();
}
- CloseHandle(hChildStd_OUT_Wr);
- CloseHandle(hChildStd_OUT_Rd);
- CloseHandle(hChildStd_IN_Rd);
- CloseHandle(hChildStd_IN_Wr);
-
return iRet;
}
diff --git a/src/Format/FormatCom.cpp b/src/Format/FormatCom.cpp
index 7c155600..147e4a15 100644
--- a/src/Format/FormatCom.cpp
+++ b/src/Format/FormatCom.cpp
@@ -92,7 +92,7 @@ public:
virtual BOOL STDMETHODCALLTYPE FormatNtfs (int driveNo, int clusterSize)
{
- return ::FormatNtfs (driveNo, clusterSize);
+ return ::FormatNtfs (driveNo, clusterSize, TRUE);
}
virtual int STDMETHODCALLTYPE AnalyzeHiddenVolumeHost (
@@ -134,7 +134,7 @@ public:
virtual BOOL STDMETHODCALLTYPE FormatFs (int driveNo, int clusterSize, int fsType)
{
- return ::FormatFs (driveNo, clusterSize, fsType);
+ return ::FormatFs (driveNo, clusterSize, fsType, TRUE);
}
virtual DWORD STDMETHODCALLTYPE GetFileSize (BSTR filePath, unsigned __int64 *pSize)
@@ -250,7 +250,7 @@ extern "C" int UacFormatNtfs (HWND hWnd, int driveNo, int clusterSize)
if (ComGetInstance (hWnd, &tc))
r = tc->FormatNtfs (driveNo, clusterSize);
else
- r = 0;
+ r = (int) GetLastError();
CoUninitialize ();
@@ -267,7 +267,7 @@ extern "C" int UacFormatFs (HWND hWnd, int driveNo, int clusterSize, int fsType)
if (ComGetInstance (hWnd, &tc))
r = tc->FormatFs (driveNo, clusterSize, fsType);
else
- r = 0;
+ r = (int) GetLastError();
CoUninitialize ();