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<?php

/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/lgpl-3.0.html LGPL v3 or later
 */
namespace Matomo\Decompress;

/**
 * Unzip wrapper around PclZip
 */
class PclZip implements \Matomo\Decompress\DecompressInterface
{
    /**
     * @var \PclZip
     */
    private $pclzip;
    /**
     * @var string
     */
    public $filename;
    /**
     * Constructor
     *
     * @param string $filename Name of the .zip archive
     */
    public function __construct($filename)
    {
        $this->pclzip = new \PclZip($filename);
        $this->filename = $filename;
    }
    /**
     * Extract files from archive to target directory
     *
     * @param string $pathExtracted Absolute path of target directory
     * @return mixed  Array of filenames if successful; or 0 if an error occurred
     */
    public function extract($pathExtracted)
    {
        $pathExtracted = str_replace('\\', '/', $pathExtracted);
        $list = $this->pclzip->listContent();
        if (empty($list)) {
            return 0;
        }
        foreach ($list as $entry) {
            $filename = str_replace('\\', '/', $entry['stored_filename']);
            $parts = explode('/', $filename);
            if (!strncmp($filename, '/', 1) || array_search('..', $parts) !== false || strpos($filename, ':') !== false) {
                return 0;
            }
        }
        // PCLZIP_CB_PRE_EXTRACT callback returns 0 to skip, 1 to resume, or 2 to abort
        return $this->pclzip->extract(PCLZIP_OPT_PATH, $pathExtracted, PCLZIP_OPT_STOP_ON_ERROR, PCLZIP_OPT_REPLACE_NEWER, PCLZIP_CB_PRE_EXTRACT, function ($p_event, &$p_header) use($pathExtracted) {
            return strncmp($p_header['filename'], $pathExtracted, strlen($pathExtracted)) ? 0 : 1;
        });
    }
    /**
     * Get error status string for the latest error
     *
     * @return string
     */
    public function errorInfo()
    {
        return $this->pclzip->errorInfo(true);
    }
}