VeraCrypt
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Diffstat (limited to 'src/Common/Dlgcode.c')
-rw-r--r--src/Common/Dlgcode.c37
1 files changed, 33 insertions, 4 deletions
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index 246f35a..5e26ef0 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -7520,18 +7520,47 @@ BOOL TCCopyFile (char *sourceFileName, char *destinationFile)
// If bAppend is TRUE, the buffer is appended to an existing file. If bAppend is FALSE, any existing file
// is replaced. If an error occurs, the incomplete file is deleted (provided that bAppend is FALSE).
-BOOL SaveBufferToFile (const char *inputBuffer, const char *destinationFile, DWORD inputLength, BOOL bAppend)
+BOOL SaveBufferToFile (const char *inputBuffer, const char *destinationFile, DWORD inputLength, BOOL bAppend, BOOL bRenameIfFailed)
{
HANDLE dst;
DWORD bytesWritten;
BOOL res = TRUE;
+ DWORD dwLastError = 0;
dst = CreateFile (destinationFile,
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, bAppend ? OPEN_EXISTING : CREATE_ALWAYS, 0, NULL);
+ dwLastError = GetLastError();
+ if (!bAppend && bRenameIfFailed && (dst == INVALID_HANDLE_VALUE) && (GetLastError () == ERROR_SHARING_VIOLATION))
+ {
+ char renamedPath[TC_MAX_PATH + 1];
+ StringCbCopyA (renamedPath, sizeof(renamedPath), destinationFile);
+ StringCbCatA (renamedPath, sizeof(renamedPath), VC_FILENAME_RENAMED_SUFFIX);
+
+ /* rename the locked file in order to be able to create a new one */
+ if (MoveFileEx (destinationFile, renamedPath, MOVEFILE_REPLACE_EXISTING))
+ {
+ dst = CreateFile (destinationFile,
+ GENERIC_WRITE,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, bAppend ? OPEN_EXISTING : CREATE_ALWAYS, 0, NULL);
+ dwLastError = GetLastError();
+ if (dst == INVALID_HANDLE_VALUE)
+ {
+ /* restore the original file name */
+ MoveFileEx (renamedPath, destinationFile, MOVEFILE_REPLACE_EXISTING);
+ }
+ else
+ {
+ /* delete the renamed file when the machine reboots */
+ MoveFileEx (renamedPath, NULL, MOVEFILE_DELAY_UNTIL_REBOOT);
+ }
+ }
+ }
+
if (dst == INVALID_HANDLE_VALUE)
{
+ SetLastError (dwLastError);
handleWin32Error (MainDlg);
return FALSE;
}
@@ -7603,14 +7632,14 @@ BOOL PrintHardCopyTextUTF16 (wchar_t *text, char *title, size_t textByteLen)
}
// Write the Unicode signature
- if (!SaveBufferToFile ("\xFF\xFE", path, 2, FALSE))
+ if (!SaveBufferToFile ("\xFF\xFE", path, 2, FALSE, FALSE))
{
remove (path);
return FALSE;
}
// Write the actual text
- if (!SaveBufferToFile ((char *) text, path, (DWORD) textByteLen, TRUE))
+ if (!SaveBufferToFile ((char *) text, path, (DWORD) textByteLen, TRUE, FALSE))
{
remove (path);
return FALSE;
@@ -10068,7 +10097,7 @@ BOOL CALLBACK SecurityTokenKeyfileDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam
finally_do_arg (vector <byte> *, &keyfileData, { burn (&finally_arg->front(), finally_arg->size()); });
- if (!SaveBufferToFile ((char *) &keyfileData.front(), keyfilePath, (DWORD) keyfileData.size(), FALSE))
+ if (!SaveBufferToFile ((char *) &keyfileData.front(), keyfilePath, (DWORD) keyfileData.size(), FALSE, FALSE))
throw SystemException ();
}