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<?php declare(strict_types=1); namespace PhpMyAdmin\Import; use PhpMyAdmin\Core; use function extension_loaded; use function function_exists; use function ini_get; use function json_encode; use function ucwords; use function uniqid; /** * Handles plugins that show the upload progress. */ final class Ajax { /** * Sets up some variables for upload progress */ public static function uploadProgressSetup(): array { /** * constant for differentiating array in $_SESSION variable */ $SESSION_KEY = '__upload_status'; /** * sets default plugin for handling the import process */ $_SESSION[$SESSION_KEY]['handler'] = ''; /** * unique ID for each upload */ $upload_id = uniqid(''); /** * list of available plugins */ $plugins = [ // in PHP 5.4 session-based upload progress was problematic, see closed bug 3964 //"session", 'progress', 'apc', 'noplugin', ]; // select available plugin foreach ($plugins as $plugin) { $check = $plugin . 'Check'; if (self::$check()) { $upload_class = 'PhpMyAdmin\Plugins\Import\Upload\Upload' . ucwords( $plugin ); $_SESSION[$SESSION_KEY]['handler'] = $upload_class; break; } } return [ $SESSION_KEY, $upload_id, $plugins, ]; } /** * Checks if APC bar extension is available and configured correctly. * * @return bool true if APC extension is available and if rfc1867 is enabled, * false if it is not */ public static function apcCheck() { if (! extension_loaded('apc') || ! function_exists('apc_fetch') || ! function_exists('getallheaders') ) { return false; } return ini_get('apc.enabled') && ini_get('apc.rfc1867'); } /** * Checks if PhpMyAdmin\Plugins\Import\Upload\UploadProgress bar extension is * available. * * @return bool true if PhpMyAdmin\Plugins\Import\Upload\UploadProgress * extension is available, false if it is not */ public static function progressCheck(): bool { return function_exists('uploadprogress_get_info') && function_exists('getallheaders'); } /** * Checks if PHP 5.4 session upload-progress feature is available. * * @return bool true if PHP 5.4 session upload-progress is available, * false if it is not */ public static function sessionCheck(): bool { return ini_get('session.upload_progress.enabled') === '1'; } /** * Default plugin for handling import. * If no other plugin is available, noplugin is used. * * @return true */ public static function nopluginCheck(): bool { return true; } /** * The function outputs json encoded status of uploaded. * It uses PMA_getUploadStatus, which is defined in plugin's file. * * @param string $id ID of transfer, usually $upload_id */ public static function status($id): void { Core::headerJSON(); echo json_encode( $_SESSION[$GLOBALS['SESSION_KEY']]['handler']::getUploadStatus($id) ); } }