Archive_Tar::_readLongHeader PHP Method

    function _readLongHeader(&$v_header)
    {
        $v_filename = '';
        $n = floor($v_header['size'] / 512);
        for ($i = 0; $i < $n; $i++) {
            $v_content = $this->_readBlock();
            $v_filename .= $v_content;
        }
        if ($v_header['size'] % 512 != 0) {
            $v_content = $this->_readBlock();
            $v_filename .= $v_content;
        }
        // ----- Read the next header
        $v_binary_data = $this->_readBlock();
        if (!$this->_readHeader($v_binary_data, $v_header)) {
            return false;
        }
        $v_filename = trim($v_filename);
        $v_header['filename'] = $v_filename;
        if ($this->_maliciousFilename($v_filename)) {
            $this->_error('Malicious .tar detected, file "' . $v_filename . '" will not install in desired directory tree');
            return false;
        }
        return true;
    }