ULONG
APIENTRY
NtUserGetAtomName(
_In_ ATOM atom,
_Inout_ PUNICODE_STRING pustrName)
{
WCHAR awcBuffer[256];
ULONG cjLength;
/* Retrieve the atom name into a local buffer (max length is 255 chars) */
cjLength = IntGetAtomName((RTL_ATOM)atom, awcBuffer, sizeof(awcBuffer));
if (cjLength != 0)
{
_SEH2_TRY
{
/* Probe the unicode string and the buffer */
ProbeForRead(pustrName, sizeof(*pustrName), 1);
ProbeForWrite(pustrName->Buffer, pustrName->MaximumLength, 1);
/* Check if we have enough space to write the NULL termination */
if (pustrName->MaximumLength >= sizeof(UNICODE_NULL))
{
/* Limit the length to the buffer size */
cjLength = min(pustrName->MaximumLength - sizeof(UNICODE_NULL),
cjLength);
/* Copy the string and NULL terminate it */
RtlCopyMemory(pustrName->Buffer, awcBuffer, cjLength);
pustrName->Buffer[cjLength / sizeof(WCHAR)] = L'\0';
}
else
{
cjLength = 0;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* On exception, set last error and fail */
SetLastNtError(_SEH2_GetExceptionCode());
cjLength = 0;
}
_SEH2_END
}
INT APIENTRY
NtUserGetClipboardFormatName(UINT fmt, LPWSTR lpszFormatName, INT cchMaxCount)
{
INT iRet = 0;
UserEnterShared();
/* If the format is built-in we fail */
if (fmt < 0xc000)
{
/* Registetrated formats are >= 0xc000 */
goto cleanup;
}
if (cchMaxCount < 1 || !lpszFormatName)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
goto cleanup;
}
_SEH2_TRY
{
ProbeForWrite(lpszFormatName, cchMaxCount * sizeof(WCHAR), 1);
iRet = IntGetAtomName((RTL_ATOM)fmt,
lpszFormatName,
cchMaxCount * sizeof(WCHAR));
iRet /= sizeof(WCHAR);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
}
_SEH2_END;
cleanup:
UserLeave();
return iRet;
}
