File "autoptimizeCriticalCSSSettingsAjax.php"
Full Path: /home/ozbarhaber/public_html/wp-content/plugins/autoptimize/classes/autoptimizeCriticalCSSSettingsAjax.php
File size: 26.49 KB
MIME-type: text/x-php
Charset: utf-8
<?php
/**
* Critical CSS settings AJAX logic.
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
class autoptimizeCriticalCSSSettingsAjax {
/**
* Critical CSS object.
*
* @var object
*/
protected $criticalcss;
public function __construct() {
$this->criticalcss = autoptimize()->criticalcss();
$this->run();
}
public function run() {
// add filters.
add_action( 'wp_ajax_fetch_critcss', array( $this, 'critcss_fetch_callback' ) );
add_action( 'wp_ajax_save_critcss', array( $this, 'critcss_save_callback' ) );
add_action( 'wp_ajax_rm_critcss', array( $this, 'critcss_rm_callback' ) );
add_action( 'wp_ajax_rm_critcss_all', array( $this, 'critcss_rm_all_callback' ) );
add_action( 'wp_ajax_ao_ccss_export', array( $this, 'ao_ccss_export_callback' ) );
add_action( 'wp_ajax_ao_ccss_import', array( $this, 'ao_ccss_import_callback' ) );
add_action( 'wp_ajax_ao_ccss_queuerunner', array( $this, 'ao_ccss_queuerunner_callback' ) );
add_action( 'wp_ajax_ao_ccss_saverules', array( $this, 'ao_ccss_saverules_callback' ) );
}
public function critcss_fetch_callback() {
// Ajax handler to obtain a critical CSS file from the filesystem.
// Check referer.
check_ajax_referer( 'fetch_critcss_nonce', 'critcss_fetch_nonce' );
// Initialize error flag.
$error = true;
// Allow no content for MANUAL rules (as they may not exist just yet).
if ( current_user_can( 'manage_options' ) && empty( $_POST['critcssfile'] ) ) {
$content = '';
$error = false;
} elseif ( current_user_can( 'manage_options' ) && $this->critcss_check_filename( $_POST['critcssfile'] ) ) {
// Or check user permissios and filename.
// Set file path and obtain its content.
$critcssfile = AO_CCSS_DIR . strip_tags( $_POST['critcssfile'] );
if ( file_exists( $critcssfile ) ) {
$content = file_get_contents( $critcssfile );
$error = false;
}
}
// Prepare response.
if ( $error ) {
$response['code'] = '500';
$response['string'] = 'Error reading file ' . $critcssfile . '.';
} else {
$response['code'] = '200';
$response['string'] = $content;
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function critcss_save_callback() {
$error = false;
$status = false;
$response = array();
// Ajax handler to write a critical CSS to the filesystem
// Check referer.
check_ajax_referer( 'save_critcss_nonce', 'critcss_save_nonce' );
// Allow empty contents for MANUAL rules (as they are fetched later).
if ( current_user_can( 'manage_options' ) && empty( $_POST['critcssfile'] ) ) {
$critcssfile = false;
$status = true;
} elseif ( current_user_can( 'manage_options' ) && $this->critcss_check_filename( $_POST['critcssfile'] ) ) {
// Or check user permissios and filename
// Set critical CSS content.
$critcsscontents = stripslashes( $_POST['critcsscontents'] );
// If there is content and it's valid, write the file.
if ( $critcsscontents && $this->criticalcss->check_contents( $critcsscontents ) ) {
// Set file path and status.
$critcssfile = AO_CCSS_DIR . strip_tags( $_POST['critcssfile'] );
$status = file_put_contents( $critcssfile, $critcsscontents, LOCK_EX );
// Or set as error.
} else {
$error = true;
$critcssfile = 'CCSS content not acceptable.';
}
// Or just set an error.
} else {
$error = true;
$critcssfile = 'Not allowed or problem with CCSS filename.';
}
// Prepare response.
if ( ! $status || $error ) {
$response['code'] = '500';
$response['string'] = 'Error saving file ' . $critcssfile . '.';
} else {
$response['code'] = '200';
if ( $critcssfile ) {
$response['string'] = 'File ' . $critcssfile . ' saved.';
if ( true === apply_filters( 'autoptimize_filter_ccss_ajax_do_actions', true ) ) {
$rule_identifiers = $this->fetch_rule_from_ccssfile( $critcssfile );
if ( ! empty( $rule_identifiers ) && is_array( $rule_identifiers ) ) {
do_action( 'autoptimize_action_ccss_ajax_css_changed', $rule_identifiers[0], $critcssfile, $rule_identifiers[1] );
}
}
} else {
$response['string'] = 'Empty content does not need to be saved.';
}
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function critcss_rm_callback() {
// Ajax handler to delete a critical CSS from the filesystem
// Check referer.
check_ajax_referer( 'rm_critcss_nonce', 'critcss_rm_nonce' );
// Initialize error and status flags.
$error = true;
$status = false;
// Allow no file for MANUAL rules (as they may not exist just yet).
if ( current_user_can( 'manage_options' ) && empty( $_POST['critcssfile'] ) ) {
$error = false;
} elseif ( current_user_can( 'manage_options' ) && $this->critcss_check_filename( $_POST['critcssfile'] ) ) {
// Or check user permissios and filename
// Set file path and delete it.
$critcssfile = AO_CCSS_DIR . strip_tags( $_POST['critcssfile'] );
if ( file_exists( $critcssfile ) ) {
$status = unlink( $critcssfile );
$error = false;
}
}
// Prepare response.
if ( $error ) {
$response['code'] = '500';
$response['string'] = 'Error removing file ' . $critcssfile . '.';
} else {
$response['code'] = '200';
if ( $status ) {
$response['string'] = 'File ' . $critcssfile . ' removed.';
if ( true === apply_filters( 'autoptimize_filter_ccss_ajax_do_actions', true ) ) {
$rule_identifiers = $this->fetch_rule_from_ccssfile( $critcssfile );
if ( ! empty( $rule_identifiers ) && is_array( $rule_identifiers ) ) {
do_action( 'autoptimize_action_ccss_ajax_css_removed', $rule_identifiers[0], $critcssfile, $rule_identifiers[1] );
}
}
} else {
$response['string'] = 'No file to be removed.';
}
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function critcss_rm_all_callback() {
// Ajax handler to delete a critical CSS from the filesystem
// Check referer.
check_ajax_referer( 'rm_critcss_all_nonce', 'critcss_rm_all_nonce' );
// Initialize error and status flags.
$error = true;
$status = false;
// Remove all ccss files on filesystem.
if ( current_user_can( 'manage_options' ) ) {
if ( file_exists( AO_CCSS_DIR ) && is_dir( AO_CCSS_DIR ) ) {
array_map( 'unlink', glob( AO_CCSS_DIR . 'ccss_*.css', GLOB_BRACE ) );
$error = false;
$status = true;
if ( true === apply_filters( 'autoptimize_filter_ccss_ajax_do_actions', true ) ) {
do_action( 'autoptimize_action_ccss_ajax_all_css_removed' );
}
}
}
// Prepare response.
if ( $error ) {
$response['code'] = '500';
$response['string'] = 'Error removing all critical CSS files.';
} else {
$response['code'] = '200';
if ( $status ) {
$response['string'] = 'Critical CSS Files removed.';
} else {
$response['string'] = 'No file removed.';
}
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function ao_ccss_export_callback() {
// Ajax handler export settings
// Check referer.
check_ajax_referer( 'ao_ccss_export_nonce', 'ao_ccss_export_nonce' );
if ( ! class_exists( 'ZipArchive' ) ) {
$response['code'] = '500';
$response['msg'] = 'PHP ZipArchive not present, cannot create zipfile';
echo json_encode( $response );
wp_die();
}
// Init array, get options and prepare the raw object.
$settings = array();
// CCSS settings.
$settings['ccss']['rules'] = get_option( 'autoptimize_ccss_rules' );
$settings['ccss']['additional'] = get_option( 'autoptimize_ccss_additional' );
$settings['ccss']['viewport'] = get_option( 'autoptimize_ccss_viewport' );
$settings['ccss']['finclude'] = get_option( 'autoptimize_ccss_finclude' );
$settings['ccss']['rtimelimit'] = get_option( 'autoptimize_ccss_rtimelimit' );
$settings['ccss']['noptimize'] = get_option( 'autoptimize_ccss_noptimize' );
$settings['ccss']['debug'] = get_option( 'autoptimize_ccss_debug' );
$settings['ccss']['key'] = get_option( 'autoptimize_ccss_key' );
$settings['ccss']['deferjquery'] = get_option( 'autoptimize_ccss_deferjquery' );
$settings['ccss']['domain'] = get_option( 'autoptimize_ccss_domain' );
$settings['ccss']['forcepath'] = get_option( 'autoptimize_ccss_forcepath' );
$settings['ccss']['loggedin'] = get_option( 'autoptimize_ccss_loggedin' );
$settings['ccss']['rlimit'] = get_option( 'autoptimize_ccss_rlimit' );
$settings['ccss']['unloadccss'] = get_option( 'autoptimize_ccss_unloadccss' );
// JS settings.
$settings['js']['root'] = get_option( 'autoptimize_js' );
$settings['js']['aggregate'] = get_option( 'autoptimize_js_aggregate' );
$settings['js']['defer_not_aggregate'] = get_option( 'autoptimize_js_defer_not_aggregate' );
$settings['js']['defer_inline'] = get_option( 'autoptimize_js_defer_inline' );
$settings['js']['exclude'] = get_option( 'autoptimize_js_exclude' );
$settings['js']['forcehead'] = get_option( 'autoptimize_js_forcehead' );
$settings['js']['justhead'] = get_option( 'autoptimize_js_justhead' );
$settings['js']['trycatch'] = get_option( 'autoptimize_js_trycatch' );
$settings['js']['include_inline'] = get_option( 'autoptimize_js_include_inline' );
// CSS settings.
$settings['css']['root'] = get_option( 'autoptimize_css' );
$settings['css']['aggregate'] = get_option( 'autoptimize_css_aggregate' );
$settings['css']['datauris'] = get_option( 'autoptimize_css_datauris' );
$settings['css']['justhead'] = get_option( 'autoptimize_css_justhead' );
$settings['css']['defer'] = get_option( 'autoptimize_css_defer' );
$settings['css']['defer_inline'] = get_option( 'autoptimize_css_defer_inline' );
$settings['css']['inline'] = get_option( 'autoptimize_css_inline' );
$settings['css']['exclude'] = get_option( 'autoptimize_css_exclude' );
$settings['css']['include_inline'] = get_option( 'autoptimize_css_include_inline' );
// Others.
$settings['other']['autoptimize_imgopt_settings'] = get_option( 'autoptimize_imgopt_settings' );
$settings['other']['autoptimize_extra_settings'] = get_option( 'autoptimize_extra_settings' );
$settings['other']['autoptimize_cache_fallback'] = get_option( 'autoptimize_cache_fallback' );
$settings['other']['autoptimize_cache_nogzip'] = get_option( 'autoptimize_cache_nogzip' );
$settings['other']['autoptimize_cdn_url'] = get_option( 'autoptimize_cdn_url' );
$settings['other']['autoptimize_enable_meta_ao_settings'] = get_option( 'autoptimize_enable_meta_ao_settings' );
$settings['other']['autoptimize_enable_site_config'] = get_option( 'autoptimize_enable_site_config' );
$settings['other']['autoptimize_html'] = get_option( 'autoptimize_html' );
$settings['other']['autoptimize_html_keepcomments'] = get_option( 'autoptimize_html_keepcomments' );
$settings['other']['autoptimize_minify_excluded'] = get_option( 'autoptimize_minify_excluded' );
$settings['other']['autoptimize_optimize_checkout'] = get_option( 'autoptimize_optimize_checkout' );
$settings['other']['autoptimize_optimize_logged'] = get_option( 'autoptimize_optimize_logged' );
if ( defined( 'AO_PRO_VERSION' ) ) {
$settings['pro']['boosters'] = get_option( 'autoptimize_pro_boosters' );
$settings['pro']['pagecache'] = get_option( 'autoptimize_pro_pagecache' );
}
// Initialize error flag.
$error = true;
// Check user permissions.
if ( current_user_can( 'manage_options' ) ) {
// Prepare settings file path and content.
$exportfile = AO_CCSS_DIR . 'settings.json';
$contents = json_encode( $settings );
$status = file_put_contents( $exportfile, $contents, LOCK_EX );
$error = false;
}
// Prepare archive.
$zipfile = AO_CCSS_DIR . str_replace( array( '.', '/' ), '_', parse_url( AUTOPTIMIZE_WP_SITE_URL, PHP_URL_HOST ) ) . '_' . date( 'Ymd-H\hi' ) . '_ao_ccss_settings.zip'; // @codingStandardsIgnoreLine
$file = pathinfo( $zipfile, PATHINFO_BASENAME );
$zip = new ZipArchive();
$ret = $zip->open( $zipfile, ZipArchive::CREATE );
if ( true !== $ret ) {
$error = true;
} else {
$zip->addFile( AO_CCSS_DIR . 'settings.json', 'settings.json' );
if ( file_exists( AO_CCSS_DIR . 'queue.json' ) ) {
$zip->addFile( AO_CCSS_DIR . 'queue.json', 'queue.json' );
}
$options = array(
'add_path' => './',
'remove_all_path' => true,
);
$zip->addGlob( AO_CCSS_DIR . '*.css', 0, $options );
$zip->close();
}
// settings.json has been added to zipfile, so can be removed now.
if ( file_exists( $exportfile ) ) {
unlink( $exportfile );
}
// Prepare response.
if ( ! $status || $error ) {
$response['code'] = '500';
$response['msg'] = 'Error saving file ' . $file . ', code: ' . $ret;
} else {
$response['code'] = '200';
$response['msg'] = 'File ' . $file . ' saved.';
$response['file'] = $file;
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function ao_ccss_import_callback() {
// Ajax handler import settings
// Check referer.
check_ajax_referer( 'ao_ccss_import_nonce', 'ao_ccss_import_nonce' );
// Initialize error flag.
$error = false;
// Process an uploaded file with no errors.
if ( current_user_can( 'manage_options' ) && ! $_FILES['file']['error'] && $_FILES['file']['size'] < 500001 && strpos( $_FILES['file']['name'], '.zip' ) === strlen( $_FILES['file']['name'] ) - 4 ) {
// create tmp dir with hard guess name in AO_CCSS_DIR.
$_secret_dir = wp_hash( uniqid( md5( AUTOPTIMIZE_CACHE_URL ), true ) );
$_import_tmp_dir = trailingslashit( AO_CCSS_DIR . $_secret_dir );
mkdir( $_import_tmp_dir, 0774, true );
// Save file to that tmp directory but give it our own name to prevent directory traversal risks when using original name.
$zipfile = $_import_tmp_dir . uniqid( 'import_settings-', true ) . '.zip';
move_uploaded_file( $_FILES['file']['tmp_name'], $zipfile );
// Extract archive in the tmp directory.
$zip = new ZipArchive;
if ( $zip->open( $zipfile ) === true ) {
// loop through all files in the zipfile.
for ( $i = 0; $i < $zip->numFiles; $i++ ) { // @codingStandardsIgnoreLine
// but only extract known good files.
if ( preg_match( '/^settings\.json$|^\.\/ccss_[a-z0-9]{32}\.css$/', $zip->getNameIndex( $i ) ) > 0 ) {
$zip->extractTo( AO_CCSS_DIR, $zip->getNameIndex( $i ) );
}
}
$zip->close();
} else {
$error = 'could not extract';
}
// and remove temp. dir with all contents (the import-zipfile).
$this->rrmdir( $_import_tmp_dir );
if ( ! $error ) {
// Archive extraction ok, continue importing settings from AO_CCSS_DIR.
// Settings file.
$importfile = AO_CCSS_DIR . 'settings.json';
if ( file_exists( $importfile ) ) {
// Get settings and turn them into an object.
$settings = json_decode( file_get_contents( $importfile ), true );
// Update options from settings, but only for known options.
// CCSS.
foreach ( array( 'rules', 'additional', 'viewport', 'finclude', 'rtimelimit', 'noptimize', 'debug', 'key', 'deferjquery', 'domain', 'forcepath', 'loggedin', 'rlimit', 'unloadccss' ) as $ccss_setting ) {
if ( false === array_key_exists( 'ccss', $settings ) || false === array_key_exists( $ccss_setting, $settings['ccss'] ) ) {
continue;
} else {
update_option( 'autoptimize_ccss_' . $ccss_setting, autoptimizeUtils::strip_tags_array( $settings['ccss'][ $ccss_setting ] ) );
}
}
// JS.
foreach ( array( 'root', 'aggregate', 'defer_not_aggregate', 'defer_inline', 'exclude', 'forcehead', 'trycatch', 'include_inline' ) as $js_setting ) {
if ( false === array_key_exists( 'js', $settings ) || false === array_key_exists( $js_setting, $settings['js'] ) ) {
continue;
} else if ( 'root' === $js_setting ) {
update_option( 'autoptimize_js', $settings['js']['root'] );
} else {
update_option( 'autoptimize_js_' . $js_setting, $settings['js'][ $js_setting ] );
}
}
// CSS.
foreach ( array( 'root', 'aggregate', 'datauris', 'justhead', 'defer', 'defer_inline', 'inline', 'exclude', 'include_inline' ) as $css_setting ) {
if ( false === array_key_exists( 'css', $settings ) || false === array_key_exists( $css_setting, $settings['css'] ) ) {
continue;
} else if ( 'root' === $css_setting ) {
update_option( 'autoptimize_css', $settings['css']['root'] );
} else {
update_option( 'autoptimize_css_' . $css_setting, $settings['css'][ $css_setting ] );
}
}
// Other.
foreach ( array( 'autoptimize_imgopt_settings', 'autoptimize_extra_settings', 'autoptimize_cache_fallback', 'autoptimize_cache_nogzip', 'autoptimize_cdn_url', 'autoptimize_enable_meta_ao_settings', 'autoptimize_enable_site_config', 'autoptimize_html', 'autoptimize_html_keepcomments', 'autoptimize_minify_excluded', 'autoptimize_optimize_checkout', 'autoptimize_optimize_logged' ) as $other_setting ) {
if ( false === array_key_exists( 'other', $settings ) || false === array_key_exists( $other_setting, $settings['other'] ) ) {
continue;
} else {
update_option( $other_setting, $settings['other'][ $other_setting ] );
}
}
// AO Pro.
if ( defined( 'AO_PRO_VERSION' ) && array_key_exists( 'pro', $settings ) ) {
update_option( 'autoptimize_pro_boosters', $settings['pro']['boosters'] );
update_option( 'autoptimize_pro_pagecache', $settings['pro']['pagecache'] );
}
// settings.json has been imported, so can be removed now.
if ( file_exists( $importfile ) ) {
unlink( $importfile );
}
} else {
// Settings file doesn't exist, update error flag.
$error = 'settings file does not exist';
}
}
} else {
$error = 'file could not be saved';
}
// Prepare response.
if ( $error ) {
$response['code'] = '500';
$response['msg'] = 'Error importing settings: ' . $error;
} else {
$response['code'] = '200';
$response['msg'] = 'Settings imported successfully';
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function ao_ccss_queuerunner_callback() {
check_ajax_referer( 'ao_ccss_queuerunner_nonce', 'ao_ccss_queuerunner_nonce' );
// Process an uploaded file with no errors.
if ( current_user_can( 'manage_options' ) ) {
if ( ! file_exists( AO_CCSS_LOCK ) ) {
$ccss_cron = new autoptimizeCriticalCSSCron();
$ccss_cron->ao_ccss_queue_control();
$response['code'] = '200';
$response['msg'] = 'Queue processing done';
} else {
$response['code'] = '302';
$response['msg'] = 'Lock file found';
}
} else {
$response['code'] = '500';
$response['msg'] = 'Not allowed';
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function ao_ccss_saverules_callback() {
check_ajax_referer( 'ao_ccss_saverules_nonce', 'ao_ccss_saverules_nonce' );
// save rules over AJAX, too many users forget to press "save changes".
if ( current_user_can( 'manage_options' ) ) {
if ( array_key_exists( 'critcssrules', $_POST ) ) {
$rules = stripslashes( $_POST['critcssrules'] ); // ugly, but seems correct as per https://developer.wordpress.org/reference/functions/stripslashes_deep/#comment-1045 .
if ( ! empty( $rules ) ) {
$_unsafe_rules_array = json_decode( wp_strip_all_tags( $rules ), true );
if ( ! empty( $_unsafe_rules_array ) && is_array( $_unsafe_rules_array ) ) {
$_safe_rules_array = array();
if ( array_key_exists( 'paths', $_unsafe_rules_array ) ) {
$_safe_rules_array['paths'] = $_unsafe_rules_array['paths'];
}
if ( array_key_exists( 'types', $_unsafe_rules_array ) ) {
$_safe_rules_array['types'] = $_unsafe_rules_array['types'];
}
$_safe_rules = json_encode( $_safe_rules_array, JSON_FORCE_OBJECT );
if ( ! empty( $_safe_rules ) ) {
update_option( 'autoptimize_ccss_rules', $_safe_rules );
$response['code'] = '200';
$response['msg'] = 'Rules saved';
} else {
$_error = 'Could not auto-save rules (safe rules empty)';
}
} else {
$_error = 'Could not auto-save rules (rules could not be json_decoded)';
}
} else {
$_error = 'Could not auto-save rules (rules empty)';
}
} else {
$_error = 'Could not auto-save rules (rules not in $_POST)';
}
} else {
$_error = 'Not allowed';
}
if ( ! isset( $response ) && $_error ) {
$response['code'] = '500';
$response['msg'] = $_error;
}
// Dispatch respose.
echo json_encode( $response );
// Close ajax request.
wp_die();
}
public function critcss_check_filename( $filename ) {
// Try to avoid directory traversal when reading/writing/deleting critical CSS files.
if ( strpos( $filename, 'ccss_' ) !== 0 ) {
return false;
} elseif ( substr( $filename, -4, 4 ) !== '.css' ) {
return false;
} elseif ( sanitize_file_name( $filename ) !== $filename ) {
// Use WordPress core's sanitize_file_name to see if anything fishy is going on.
return false;
} else {
return true;
}
}
public function rrmdir( $path ) {
// recursively remove a directory as found on
// https://andy-carter.com/blog/recursively-remove-a-directory-in-php.
$files = glob( $path . '/*' );
foreach ( $files as $file ) {
is_dir( $file ) ? $this->rrmdir( $file ) : unlink( $file );
}
rmdir( $path );
return;
}
public function fetch_rule_from_ccssfile( $ccss_file = '' ) {
if ( empty( $ccss_file ) ) {
return false;
}
$ccss_file = str_replace( AO_CCSS_DIR, '', $ccss_file );
static $rules = null;
if ( null === $rules ) {
$rules = $this->criticalcss->get_option( 'rules' );
}
foreach ( $rules as $ruletype => $rulechilds ) {
foreach ( $rulechilds as $identifier => $properties ) {
if ( $properties['file'] === $ccss_file ) {
return array( $ruletype, $identifier );
}
}
}
return false;
}
}