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Windows: Add option to use legacy maximum password length (64 characters) instead of new maximum length (128) in UI and command line. This will users who were relying on the UI truncating the passwords to the first 64 characters in the previous versions of VeraCrypt.

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This commit is contained in:
Mounir IDRASSI
2019-03-03 00:18:48 +01:00
parent ea88c6175c
commit 453ef927ef
8 changed files with 45 additions and 20 deletions
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14
src/Common/Dlgcode.c
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@@ -146,6 +146,7 @@ BOOL bHideWaitingDialog = FALSE;
BOOL bCmdHideWaitingDialog = FALSE;
BOOL bCmdHideWaitingDialogValid = FALSE;
BOOL bUseSecureDesktop = FALSE;
BOOL bUseLegacyMaxPasswordLength = FALSE;
BOOL bCmdUseSecureDesktop = FALSE;
BOOL bCmdUseSecureDesktopValid = FALSE;
BOOL bStartOnLogon = FALSE;
@@ -1232,6 +1233,7 @@ static LRESULT CALLBACK NormalPwdFieldProc (HWND hwnd, UINT message, WPARAM wPar
{
wchar_t *pchData = (wchar_t*)GlobalLock(h);
int txtlen = 0;
int dwMaxPassLen = bUseLegacyMaxPasswordLength? MAX_LEGACY_PASSWORD : MAX_PASSWORD;
while (*pchData)
{
if (*pchData == '\r' || *pchData == '\n')
@@ -1246,7 +1248,7 @@ static LRESULT CALLBACK NormalPwdFieldProc (HWND hwnd, UINT message, WPARAM wPar
if (txtlen)
{
int curLen = GetWindowTextLength (hwnd);
if (curLen == MAX_PASSWORD)
if (curLen == dwMaxPassLen)
{
EDITBALLOONTIP ebt;
@@ -1261,7 +1263,7 @@ static LRESULT CALLBACK NormalPwdFieldProc (HWND hwnd, UINT message, WPARAM wPar
bBlock = true;
}
else if ((txtlen + curLen) > MAX_PASSWORD)
else if ((txtlen + curLen) > dwMaxPassLen)
{
EDITBALLOONTIP ebt;
@@ -1293,6 +1295,7 @@ static LRESULT CALLBACK NormalPwdFieldProc (HWND hwnd, UINT message, WPARAM wPar
BYTE vkCode = LOBYTE (vk);
BYTE vkState = HIBYTE (vk);
bool ctrlPressed = (vkState & 2) && !(vkState & 4);
int dwMaxPassLen = bUseLegacyMaxPasswordLength? MAX_LEGACY_PASSWORD : MAX_PASSWORD;
// check if there is a selected text
SendMessage (hwnd, EM_GETSEL, (WPARAM) &dwStartPos, (LPARAM) &dwEndPos);
@@ -1300,7 +1303,7 @@ static LRESULT CALLBACK NormalPwdFieldProc (HWND hwnd, UINT message, WPARAM wPar
if ((dwStartPos == dwEndPos)
&& (vkCode != VK_DELETE) && (vkCode != VK_BACK)
&& !ctrlPressed
&& (GetWindowTextLength (hwnd) == MAX_PASSWORD))
&& (GetWindowTextLength (hwnd) == dwMaxPassLen))
{
EDITBALLOONTIP ebt;
@@ -1326,8 +1329,9 @@ void ToNormalPwdField (HWND hwndDlg, UINT ctrlId)
{
HWND hwndCtrl = GetDlgItem (hwndDlg, ctrlId);
WNDPROC originalwp = (WNDPROC) GetWindowLongPtrW (hwndCtrl, GWLP_USERDATA);
DWORD dwMaxPassLen = bUseLegacyMaxPasswordLength? MAX_LEGACY_PASSWORD : MAX_PASSWORD;
SendMessage (hwndCtrl, EM_LIMITTEXT, MAX_PASSWORD, 0);
SendMessage (hwndCtrl, EM_LIMITTEXT, dwMaxPassLen, 0);
// only change WNDPROC if not changed already
if (!originalwp)
{
@@ -13077,7 +13081,7 @@ BOOL GetPassword (HWND hwndDlg, UINT ctrlID, char* passValue, int bufSize, BOOL
BOOL bRet = FALSE;
GetWindowText (GetDlgItem (hwndDlg, ctrlID), tmp, ARRAYSIZE (tmp));
if (bLegacyPassword && (lstrlen (tmp) > MAX_LEGACY_PASSWORD))
if ((bLegacyPassword || bUseLegacyMaxPasswordLength) && (lstrlen (tmp) > MAX_LEGACY_PASSWORD))
wmemset (&tmp[MAX_LEGACY_PASSWORD], 0, MAX_PASSWORD + 1 - MAX_LEGACY_PASSWORD);
utf8Len = WideCharToMultiByte (CP_UTF8, 0, tmp, -1, passValue, bufSize, NULL, NULL);
burn (tmp, sizeof (tmp));