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<?php /** * Plugin Name: WP Downloader * Plugin URI: http://szalkiewicz.pl/ * Description: This plugin allows you to download other plugins and themes installed on your site as a zip package, ready to install on another site. * Version: 2.0 * Author: Wojtek Szałkiewicz * Author URI: http://szalkiewicz.pl/ * Requires at least: 3.5 * Tested up to: 4.1 */ add_action('plugins_loaded', 'wpd_load'); /** * Hooks some actions and filters, * Handles the download link * * @return void */ function wpd_load(){ // Hook for the plugin action links add_filter('plugin_action_links', 'wpd_plugin_action_links', 10, 4); // Hook for the theme action links in wordpress <3.8 add_filter('theme_action_links', 'wpd_theme_action_links', 10, 2); // Hook for adding javasctript on the themes page add_action('admin_footer-themes.php', 'wpd_scripts', 99); // Check, if there is a 'wpd' Get param, and there is a proper nonce set... if(isset($_GET['wpd']) && wp_verify_nonce($_GET['_wpnonce'], 'wpd-download')){ // ...yup, perform downloading wpd_download(); } } /** * Displays "download" link on the plugins page * * @param array list of action links * @param string plugin file name * @param array An array of plugin data. * @param string The plugin context. * @return array */ function wpd_plugin_action_links($links, $file, $plugin_data, $context){ if('dropins' === $context) return $links; if('mustuse' === $context) $what = 'muplugin'; else $what = 'plugin'; $dowload_query = build_query(array('wpd' => $what, 'object' => $file)); $download_link = sprintf('<a href="%s">%s</a>', wp_nonce_url(admin_url('?' . $dowload_query), 'wpd-download'), __('Download') ); array_push($links, $download_link); return $links; } /** * Displays "download" link on the themes page in wordpress <3.8 * * @param array list of action links * @param string theme name * @return array */ function wpd_theme_action_links($links, $theme){ $dowload_query = build_query(array('wpd' => 'theme', 'object' => $theme->get_stylesheet())); $download_link = sprintf('<a href="%s">%s</a>', wp_nonce_url(admin_url('?' . $dowload_query), 'wpd-download'), __('Download') ); array_push($links, $download_link); return $links; } /** * Displays javascript code in the footer of themes.php * * @return void */ function wpd_scripts(){ // Download url $query = build_query(array('wpd' => 'theme', 'object' => '_obj_')); $url = wp_nonce_url(admin_url('?' . $query), 'wpd-download'); // Label used for download links $label = __('Download'); // Current theme $current_theme = get_stylesheet(); $script_template = '<script type="text/javascript" id="wp-downloader"> (function($){ var url = "%s", label = "%s", current = "%s", button = \'<a class="button button-primary download hide-if-no-js" href="\' + url + \'">\' + label + \'</a>\'; $(window).load(function(){ // For current theme in wordpress <3.8 $("#current-theme .theme-options").after(\'<div class="theme-options"><a href="\' + url.replace("_obj_", current) + \'">\' + label + \'</a></div>\'); // Add download button for each theme on the themes page $("#wpbody .theme .theme-actions .load-customize").each(function(i, e){ var btn = $(button), $e = $(e), href = $e.prop("href"); btn.prop("href", url.replace("_obj_", href.replace(/.*theme=(.*)(&|$)/, "$1"))); $e.parent().append(btn); }); }); // Modify single theme template to add the download button var d = $("#tmpl-theme-single").html(), ar = new RegExp(\'(<div class="active-theme">)(([\n\t]*(<#|<a).*[\n\t]*)*)(</div>)\', "mi"); ir = new RegExp(\'(<div class="inactive-theme">)(([\n\t]*(<#|<a).*[\n\t]*)*)(</div>)\', "mi"); d = d.replace(ar, "$1$2" + button + "$5"); d = d.replace(ir, "$1$2" + button + "$5"); $("#tmpl-theme-single").html(d); $(document).on("click", "a.button.download", function(e){ e.preventDefault(); var $this = $(this), href = $(this).parent().find(".load-customize").attr("href"), theme; theme = href.replace(/.*theme=(.*)(&|$)/, "$1"); href = url.replace("_obj_", theme).replace(new RegExp("&", "g"), "&"); window.location = href; }); }(jQuery)) </script>'; // Print javascript printf($script_template, $url, $label, $current_theme); } /** * Handles the download * * @return array */ function wpd_download(){ if(!class_exists('PclZip')){ // Load class file if it's not loaded yet include ABSPATH . 'wp-admin/includes/class-pclzip.php'; } // Kind of object we download (theme or plugin) $what = $_GET['wpd']; // The name of object $object = $_GET['object']; // Prepare object name and root path for given object type switch($what){ case 'plugin': if(strpos($object, '/')){ $object = dirname($object); } $root = WP_PLUGIN_DIR; break; case 'muplugin': if(strpos($object, '/')){ $object = dirname($object); } $root = WPMU_PLUGIN_DIR; break; case 'theme': $root = get_theme_root($object); break; default: // bad URL wp_die('Cheatin’ uh?'); } $object = sanitize_file_name($object); if(empty($object)) // No object name wp_die('Cheatin’ uh?'); // Prepare full path do the desired object $path = $root . '/' . $object; // Filename for a zip package $fileName = $object . '.zip'; // Temporary file name in upload dir $upload_dir = wp_upload_dir(); $tmpFile = trailingslashit($upload_dir['path']) . $fileName; // Create new archive $archive = new PclZip($tmpFile); // Add entire folder to the archive $archive->add($path, PCLZIP_OPT_REMOVE_PATH, $root); // Set headers for the zip archive header('Content-type: application/zip'); header('Content-Disposition: attachment; filename="'.$fileName.'"'); // Read file content directly readfile($tmpFile); // Remove zip file unlink($tmpFile); // Exit. No wp_die(), it produces HTML exit; }
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