/**
* Add the "private" flag to the torrent
*
* @return true if a change was required
*/
public function make_private()
{
if (empty($this->Dec)) {
return false;
}
if ($this->is_private()) {
return false;
}
$this->Dec['info']['private'] = Int64::make(1);
ksort($this->Dec['info']);
return true;
}
/**
* Internal decoding function that does the actual job
*
* @return decoded data with a suitable structure
*/
private function _bdec()
{
switch ($this->Data[$this->Pos]) {
case 'i':
$this->Pos++;
$Value = substr($this->Data, $this->Pos, strpos($this->Data, 'e', $this->Pos) - $this->Pos);
if (!ctype_digit($Value) && !($Value[0] == '-' && ctype_digit(substr($Value, 1)))) {
return $this->error();
}
$this->Pos += strlen($Value) + 1;
return Int64::make($Value);
case 'l':
$Value = array();
$this->Pos++;
while ($this->Data[$this->Pos] != 'e') {
if ($this->Pos >= $this->Length) {
return $this->error();
}
$Value[] = $this->_bdec();
}
$this->Pos++;
return $Value;
case 'd':
$Value = array();
$this->Pos++;
while ($this->Data[$this->Pos] != 'e') {
$Length = substr($this->Data, $this->Pos, strpos($this->Data, ':', $this->Pos) - $this->Pos);
if (!ctype_digit($Length)) {
return $this->error();
}
$this->Pos += strlen($Length) + $Length + 1;
$Key = substr($this->Data, $this->Pos - $Length, $Length);
if ($this->Pos >= $this->Length) {
return $this->error();
}
$Value[$Key] = $this->_bdec();
}
$this->Pos++;
// Use boolean true to keep track of empty dictionaries
return empty($Value) ? true : $Value;
default:
$Length = substr($this->Data, $this->Pos, strpos($this->Data, ':', $this->Pos) - $this->Pos);
if (!ctype_digit($Length)) {
return $this->error();
// Even if the string is likely to be decoded correctly without this check, it's malformed
}
$this->Pos += strlen($Length) + $Length + 1;
return substr($this->Data, $this->Pos - $Length, $Length);
}
}
