  private function get_lines() {
    $data = "";
    $endtime = 0;
    /* If for some reason the fp is bad, don't inf loop */
    if (!is_resource($this->smtp_conn)) {
      return $data;
    }
    stream_set_timeout($this->smtp_conn, $this->Timeout);
    if ($this->Timelimit > 0) {
      $endtime = time() + $this->Timelimit;
    }
    while(is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
      $str = @fgets($this->smtp_conn,515);
      if($this->do_debug >= 4) {
        $this->edebug("SMTP -> get_lines(): \$data was \"$data\"" . $this->CRLF . '<br />');
        $this->edebug("SMTP -> get_lines(): \$str is \"$str\"" . $this->CRLF . '<br />');
      }
      $data .= $str;
      if($this->do_debug >= 4) {
        $this->edebug("SMTP -> get_lines(): \$data is \"$data\"" . $this->CRLF . '<br />');
      }
      // if 4th character is a space, we are done reading, break the loop
      if(substr($str,3,1) == " ") { break; }
      // Timed-out? Log and break
      $info = stream_get_meta_data($this->smtp_conn);
      if ($info['timed_out']) {
        if($this->do_debug >= 4) {
          $this->edebug("SMTP -> get_lines(): timed-out (" . $this->Timeout . " seconds) <br />");
        }
        break;
      }
      // Now check if reads took too long
      if ($endtime) {
        if (time() > $endtime) {
          if($this->do_debug >= 4) {
            $this->edebug("SMTP -> get_lines(): timelimit reached (" . $this->Timelimit . " seconds) <br />");
          }
          break;
        }
      }
    }
    return $data;
  }
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.