/**
* Return literal length data located at the end of the stream.
*
* @return mixed Null if no literal data found, or an array with these
* keys:
* - binary: (boolean) True if this is a literal8.
* - length: (integer) Length of the literal.
*/
public function getLiteralLength()
{
if ($this->_stream->substring(-1, 1) === '}') {
$literal_data = $this->_stream->getString($this->_stream->search('{', true) - 1);
$literal_len = substr($literal_data, 2, -1);
if (is_numeric($literal_len)) {
return array('binary' => $literal_data[0] === '~', 'length' => intval($literal_len));
}
}
return null;
}
/**
* Find the location of the end of the header text.
*
* @return array 1st element: Header position, 2nd element: Length of
* trailing EOL.
*/
protected function _findHeader()
{
// Look for the EOL that is found first in the message. Some clients
// are sending mixed EOL in S/MIME signed messages. This still doesn't
// fix "Nine" currently, as they first send \r\n, but use \n\n to
// separate the headers.
// See: https://ninefolders.plan.io/track/10606/1dcfed
switch ($this->_stream->getEOL()) {
case "\n":
return array($this->_stream->search("\n\n"), 2);
case "\r\n":
return array($this->_stream->search("\r\n\r\n"), 4);
}
}