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Editing: AjaxWrapper.php
<?php /** * @package Duplicator * @copyright (c) 2022, Snap Creek LLC */ namespace Duplicator\Ajax; use DUP_Handler; use DUP_Log; use DUP_Util; use Duplicator\Libs\Snap\SnapIO; use Duplicator\Libs\Snap\SnapUtil; use Exception; class AjaxWrapper { /** * This function wrap a callback and return always a json well formatted output. * * check nonce and capability if passed and return a json with this format * [ * success : bool * data : [ * funcData : mixed // callback return data * message : string // a message for jvascript func (for example an exception message) * output : string // all normal output wrapped between ob_start and ob_get_clean * // if $errorUnespectedOutput is true and output isn't empty the json return an error * ] * ] * * @param callable $callback callback function * @param string $nonceaction if action is null don't verify nonce * @param string $nonce nonce string * @param string $capability if capability is null don't verify capability * @param bool $errorUnespectedOutput if true thorw exception with unespected optput * * @return void */ public static function json( $callback, $nonceaction = null, $nonce = null, $capability = null, $errorUnespectedOutput = true ) { $error = false; $result = array( 'funcData' => null, 'output' => '', 'message' => '' ); ob_start(); try { DUP_Handler::init_error_handler(); $nonce = SnapUtil::sanitizeNSCharsNewline($nonce); if (is_null($nonceaction) || !wp_verify_nonce($nonce, $nonceaction)) { DUP_Log::trace('Security issue'); throw new Exception('Security issue'); } if (!is_null($capability)) { DUP_Util::hasCapability($capability, DUP_Util::SECURE_ISSUE_THROW); } // execute ajax function $result['funcData'] = call_user_func($callback); } catch (Exception $e) { $error = true; $result['message'] = $e->getMessage(); } $result['output'] = ob_get_clean(); if ($errorUnespectedOutput && !empty($result['output'])) { $error = true; } if ($error) { wp_send_json_error($result); } else { wp_send_json_success($result); } } /** * This function wrap a callback and start a chunked file download. * The callback must return a file path. * * @param callable():false|array{path:string,name:string} $callback Callback function that return a file path for download or false on error * @param string $nonceaction if action is null don't verify nonce * @param string $nonce nonce string * @param bool $errorUnespectedOutput if true thorw exception with unespected optput * * @return never */ public static function fileDownload( $callback, $nonceaction = null, $nonce = null, $errorUnespectedOutput = true ) { ob_start(); try { DUP_Handler::init_error_handler(); $nonce = SnapUtil::sanitizeNSCharsNewline($nonce); if (!is_null($nonceaction) && !wp_verify_nonce($nonce, $nonceaction)) { DUP_Log::trace('Security issue'); throw new Exception('Security issue'); } // execute ajax function if (($fileInfo = call_user_func($callback)) === false) { throw new Exception('Error generating file'); } if (!@file_exists($fileInfo['path'])) { throw new Exception('File ' . $fileInfo['path'] . ' not found'); } $result['output'] = ob_get_clean(); if ($errorUnespectedOutput && !empty($result['output'])) { throw new Exception('Unespected output'); } SnapIO::serveFileForDownload($fileInfo['path'], $fileInfo['name'], DUPLICATOR_BUFFER_READ_WRITE_SIZE); } catch (Exception $e) { DUP_Log::trace($e->getMessage()); SnapIO::serverError500(); } } }
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