495 lines
13 KiB
PHP
495 lines
13 KiB
PHP
<?php
|
|
namespace W3TC;
|
|
|
|
/**
|
|
* W3 ObjectCache plugin
|
|
*/
|
|
class BrowserCache_Plugin {
|
|
private $_config = null;
|
|
private $browsercache_rewrite;
|
|
|
|
function __construct() {
|
|
$this->_config = Dispatcher::config();
|
|
}
|
|
|
|
/**
|
|
* Runs plugin
|
|
*/
|
|
function run() {
|
|
add_filter( 'w3tc_admin_bar_menu',
|
|
array( $this, 'w3tc_admin_bar_menu' ) );
|
|
|
|
if ( $this->_config->get_boolean( 'browsercache.html.w3tc' ) ) {
|
|
add_action( 'send_headers',
|
|
array( $this, 'send_headers' ) );
|
|
}
|
|
|
|
if ( !$this->_config->get_boolean( 'browsercache.html.etag' ) ) {
|
|
add_filter( 'wp_headers',
|
|
array( $this, 'filter_wp_headers' ),
|
|
0, 2 );
|
|
}
|
|
|
|
$url_uniqualize_enabled = $this->url_uniqualize_enabled();
|
|
|
|
if ( $this->url_clean_enabled() || $url_uniqualize_enabled ) {
|
|
$this->browsercache_rewrite =
|
|
$this->_config->get_boolean( 'browsercache.rewrite' );
|
|
|
|
// modify CDN urls
|
|
add_filter( 'w3tc_cdn_url',
|
|
array( $this, 'w3tc_cdn_url' ), 0, 3 );
|
|
|
|
if ( $url_uniqualize_enabled ) {
|
|
add_action( 'w3tc_flush_all',
|
|
array( $this, 'w3tc_flush_all' ), 1050, 1 );
|
|
}
|
|
|
|
|
|
if ( $this->can_ob() ) {
|
|
Util_Bus::add_ob_callback( 'browsercache',
|
|
array( $this, 'ob_callback' ) );
|
|
}
|
|
}
|
|
|
|
$v = $this->_config->get_string( 'browsercache.security.session.cookie_httponly' );
|
|
if ( !empty( $v ) ) {
|
|
@ini_set( 'session.cookie_httponly', $v == 'on' ? '1': '0' );
|
|
}
|
|
$v = $this->_config->get_string( 'browsercache.security.session.cookie_secure' );
|
|
if ( !empty( $v ) ) {
|
|
@ini_set( 'session.cookie_secure', $v == 'on' ? '1': '0' );
|
|
}
|
|
$v = $this->_config->get_string( 'browsercache.security.session.use_only_cookies' );
|
|
if ( !empty( $v ) ) {
|
|
@ini_set( 'session.use_only_cookies', $v == 'on' ? '1': '0' );
|
|
}
|
|
|
|
add_filter( 'w3tc_minify_http2_preload_url',
|
|
array( $this, 'w3tc_minify_http2_preload_url' ), 4000 );
|
|
add_filter( 'w3tc_cdn_config_headers',
|
|
array( $this, 'w3tc_cdn_config_headers' ) );
|
|
|
|
if ( Util_Admin::is_w3tc_admin_page() ) {
|
|
add_action( 'admin_notices', array( $this, 'admin_notices' ) );
|
|
}
|
|
}
|
|
|
|
private function url_clean_enabled() {
|
|
return
|
|
$this->_config->get_boolean( 'browsercache.cssjs.querystring' ) ||
|
|
$this->_config->get_boolean( 'browsercache.html.querystring' ) ||
|
|
$this->_config->get_boolean( 'browsercache.other.querystring' );
|
|
}
|
|
|
|
private function url_uniqualize_enabled() {
|
|
return $this->_config->get_boolean( 'browsercache.cssjs.replace' ) ||
|
|
$this->_config->get_boolean( 'browsercache.html.replace' ) ||
|
|
$this->_config->get_boolean( 'browsercache.other.replace' );
|
|
}
|
|
|
|
public function w3tc_flush_all( $extras = array() ) {
|
|
if ( isset( $extras['only'] ) && $extras['only'] != 'browsercache' )
|
|
return;
|
|
|
|
update_option( 'w3tc_browsercache_flush_timestamp',
|
|
rand( 10000, 99999 ) . '' );
|
|
}
|
|
|
|
/**
|
|
* Check if we can start OB
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function can_ob() {
|
|
/**
|
|
* Skip if admin
|
|
*/
|
|
if ( defined( 'WP_ADMIN' ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Skip if doing AJAX
|
|
*/
|
|
if ( defined( 'DOING_AJAX' ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Skip if doing cron
|
|
*/
|
|
if ( defined( 'DOING_CRON' ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Skip if APP request
|
|
*/
|
|
if ( defined( 'APP_REQUEST' ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Skip if XMLRPC request
|
|
*/
|
|
if ( defined( 'XMLRPC_REQUEST' ) ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check for WPMU's and WP's 3.0 short init
|
|
*/
|
|
if ( defined( 'SHORTINIT' ) && SHORTINIT ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check User Agent
|
|
*/
|
|
$http_user_agent = isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) : '';
|
|
if ( stristr( $http_user_agent, W3TC_POWERED_BY ) !== false ) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Output buffer callback
|
|
*
|
|
* @param string $buffer
|
|
* @return mixed
|
|
*/
|
|
function ob_callback( $buffer ) {
|
|
if ( $buffer != '' && Util_Content::is_html_xml( $buffer ) ) {
|
|
$domain_url_regexp = Util_Environment::home_domain_root_url_regexp();
|
|
|
|
$buffer = preg_replace_callback(
|
|
'~(href|src|action|extsrc|asyncsrc|w3tc_load_js\()=?([\'"])((' .
|
|
$domain_url_regexp .
|
|
')?(/[^\'"/][^\'"]*\.([a-z-_]+)([\?#][^\'"]*)?))[\'"]~Ui', array(
|
|
$this,
|
|
'link_replace_callback'
|
|
), $buffer );
|
|
|
|
// without quotes
|
|
$buffer = preg_replace_callback(
|
|
'~(href|src|action|extsrc|asyncsrc)=((' .
|
|
$domain_url_regexp .
|
|
')?(/[^\\s>][^\\s>]*\.([a-z-_]+)([\?#][^\\s>]*)?))([\\s>])~Ui', array(
|
|
$this,
|
|
'link_replace_callback_noquote'
|
|
), $buffer );
|
|
}
|
|
|
|
return $buffer;
|
|
}
|
|
|
|
/**
|
|
* Link replace callback
|
|
*
|
|
* @param string $matches
|
|
* @return string
|
|
*/
|
|
function link_replace_callback( $matches ) {
|
|
list ( $match, $attr, $quote, $url, , , , , $extension ) = $matches;
|
|
|
|
$ops = $this->_get_url_mutation_operations( $url, $extension );
|
|
if ( is_null( $ops ) )
|
|
return $match;
|
|
|
|
$url = $this->mutate_url( $url, $ops, !$this->browsercache_rewrite );
|
|
|
|
if ( $attr != 'w3tc_load_js(' )
|
|
return $attr . '=' . $quote . $url . $quote;
|
|
return sprintf( '%s\'%s\'', $attr, $url );
|
|
}
|
|
|
|
/**
|
|
* Link replace callback when no quote arount attribute value
|
|
*
|
|
* @param string $matches
|
|
* @return string
|
|
*/
|
|
function link_replace_callback_noquote( $matches ) {
|
|
list ( $match, $attr, $url, , , , , $extension, , $delimiter ) = $matches;
|
|
|
|
$ops = $this->_get_url_mutation_operations( $url, $extension );
|
|
if ( is_null( $ops ) )
|
|
return $match;
|
|
|
|
$url = $this->mutate_url( $url, $ops, !$this->browsercache_rewrite );
|
|
|
|
return $attr . '=' . $url . $delimiter;
|
|
}
|
|
|
|
/**
|
|
* Mutate http/2 header links
|
|
*/
|
|
public function w3tc_minify_http2_preload_url( $data ) {
|
|
if ( isset( $data['browsercache_processed'] ) ) {
|
|
return $data;
|
|
}
|
|
|
|
$data['browsercache_processed'] = '*';
|
|
$url = $data['result_link'];
|
|
|
|
// decouple extension
|
|
$matches = array();
|
|
if ( !preg_match( '/\.([a-zA-Z0-9]+)($|[\?])/', $url, $matches ) ) {
|
|
return $data;
|
|
}
|
|
$extension = $matches[1];
|
|
|
|
$ops = $this->_get_url_mutation_operations( $url, $extension );
|
|
if ( is_null( $ops ) ) {
|
|
return $data;
|
|
}
|
|
|
|
$mutate_by_querystring = !$this->browsercache_rewrite;
|
|
|
|
$url = $this->mutate_url( $url, $ops, $mutate_by_querystring );
|
|
$data['result_link'] = $url;
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Link replace for CDN url
|
|
*
|
|
* @param string $matches
|
|
* @return string
|
|
*/
|
|
function w3tc_cdn_url( $url, $original_url, $is_cdn_mirror ) {
|
|
// decouple extension
|
|
$matches = array();
|
|
if ( !preg_match( '/\.([a-zA-Z0-9]+)($|[\?])/', $original_url, $matches ) )
|
|
return $url;
|
|
$extension = $matches[1];
|
|
|
|
$ops = $this->_get_url_mutation_operations( $original_url, $extension );
|
|
if ( is_null( $ops ) )
|
|
return $url;
|
|
|
|
// for push cdns each flush would require manual reupload of files
|
|
$mutate_by_querystring = !$this->browsercache_rewrite || !$is_cdn_mirror;
|
|
|
|
$url = $this->mutate_url( $url, $ops, $mutate_by_querystring );
|
|
return $url;
|
|
}
|
|
|
|
private function mutate_url( $url, $ops, $mutate_by_querystring ) {
|
|
$query_pos = strpos( $url, '?' );
|
|
if ( isset( $ops['querystring'] ) && $query_pos !== false ) {
|
|
$url = substr( $url, 0, $query_pos );
|
|
$query_pos = false;
|
|
}
|
|
|
|
if ( isset( $ops['replace'] ) ) {
|
|
$id = $this->get_filename_uniqualizator();
|
|
|
|
if ( $mutate_by_querystring ) {
|
|
if ( $query_pos !== false ) {
|
|
$url = substr( $url, 0, $query_pos + 1 ) . $id . '&' .
|
|
substr( $url, $query_pos + 1 );
|
|
} else {
|
|
$tag_pos = strpos( $url, '#' );
|
|
if ( $tag_pos === false ) {
|
|
$url .= '?' . $id;
|
|
} else {
|
|
$url = substr( $url, 0, $tag_pos ) . '?' . $id .
|
|
substr( $url, $tag_pos );
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// add $id to url before extension
|
|
|
|
$url_query = '';
|
|
if ( $query_pos !== false ) {
|
|
$url_query = substr( $url, $query_pos );
|
|
$url = substr( $url, 0, $query_pos );
|
|
}
|
|
|
|
$ext_pos = strrpos( $url, '.' );
|
|
$extension = substr( $url, $ext_pos );
|
|
|
|
$url = substr( $url, 0, strlen( $url ) - strlen( $extension ) ) .
|
|
'.' . $id . $extension . $url_query;
|
|
}
|
|
}
|
|
|
|
return $url;
|
|
}
|
|
|
|
function _get_url_mutation_operations( $url, $extension ) {
|
|
static $extensions = null;
|
|
if ( $extensions === null ) {
|
|
$core = Dispatcher::component( 'BrowserCache_Core' );
|
|
$extensions = $core->get_replace_querystring_extensions( $this->_config );
|
|
}
|
|
|
|
static $exceptions = null;
|
|
if ( $exceptions === null )
|
|
$exceptions = $this->_config->get_array( 'browsercache.replace.exceptions' );
|
|
|
|
if ( !isset( $extensions[$extension] ) )
|
|
return null;
|
|
|
|
$test_url = Util_Environment::remove_query( $url );
|
|
foreach ( $exceptions as $exception ) {
|
|
$escaped = str_replace( '~', '\~', $exception );
|
|
if ( trim( $exception ) && preg_match( '~' . $escaped . '~', $test_url ) )
|
|
return null;
|
|
}
|
|
|
|
return $extensions[$extension];
|
|
}
|
|
|
|
/**
|
|
* Returns replace ID
|
|
*
|
|
* @return string
|
|
*/
|
|
function get_filename_uniqualizator() {
|
|
static $cache_id = null;
|
|
|
|
if ( $cache_id === null ) {
|
|
$value = get_option( 'w3tc_browsercache_flush_timestamp' );
|
|
|
|
if ( empty( $value ) ) {
|
|
$value = rand( 10000, 99999 ) . '';
|
|
update_option( 'w3tc_browsercache_flush_timestamp', $value );
|
|
}
|
|
|
|
$cache_id = substr( $value, 0, 5 );
|
|
}
|
|
|
|
return 'x' . $cache_id;
|
|
}
|
|
|
|
public function w3tc_admin_bar_menu( $menu_items ) {
|
|
$browsercache_update_media_qs =
|
|
( $this->_config->get_boolean( 'browsercache.cssjs.replace' ) ||
|
|
$this->_config->get_boolean( 'browsercache.other.replace' ) );
|
|
|
|
if ( $browsercache_update_media_qs ) {
|
|
$menu_items['20190.browsercache'] = array(
|
|
'id' => 'w3tc_flush_browsercache',
|
|
'parent' => 'w3tc_flush',
|
|
'title' => __( 'Browser Cache: Update Media Query String', 'w3-total-cache' ),
|
|
'href' => wp_nonce_url( admin_url(
|
|
'admin.php?page=w3tc_dashboard&w3tc_flush_browser_cache' ),
|
|
'w3tc' )
|
|
);
|
|
}
|
|
|
|
return $menu_items;
|
|
}
|
|
|
|
/**
|
|
* Send headers
|
|
*/
|
|
function send_headers() {
|
|
@header( 'X-Powered-By: ' . Util_Environment::w3tc_header() );
|
|
}
|
|
|
|
/**
|
|
* Returns headers config for CDN
|
|
*/
|
|
function w3tc_cdn_config_headers( $config ) {
|
|
$sections = Util_Mime::sections_to_mime_types_map();
|
|
foreach ( $sections as $section => $v ) {
|
|
$config[$section] = $this->w3tc_cdn_config_headers_section( $section );
|
|
}
|
|
|
|
return $config;
|
|
}
|
|
|
|
private function w3tc_cdn_config_headers_section( $section ) {
|
|
$c = $this->_config;
|
|
$prefix = 'browsercache.' . $section;
|
|
$lifetime = $c->get_integer( $prefix . '.lifetime' );
|
|
|
|
$headers = array();
|
|
|
|
if ( $c->get_boolean( $prefix . '.w3tc' ) ) {
|
|
$headers['X-Powered-By'] = Util_Environment::w3tc_header();
|
|
}
|
|
|
|
if ( $c->get_boolean( $prefix . '.cache.control' ) ) {
|
|
switch ( $c->get_string( $prefix . '.cache.policy' ) ) {
|
|
case 'cache':
|
|
$headers['Pragma'] = 'public';
|
|
$headers['Cache-Control'] = 'public';
|
|
break;
|
|
|
|
case 'cache_public_maxage':
|
|
$headers['Pragma'] = 'public';
|
|
$headers['Cache-Control'] = "max-age=$lifetime, public";
|
|
break;
|
|
|
|
case 'cache_validation':
|
|
$headers['Pragma'] = 'public';
|
|
$headers['Cache-Control'] = 'public, must-revalidate, proxy-revalidate';
|
|
break;
|
|
|
|
case 'cache_noproxy':
|
|
$headers['Pragma'] = 'public';
|
|
$headers['Cache-Control'] = 'private, must-revalidate';
|
|
break;
|
|
|
|
case 'cache_maxage':
|
|
$headers['Pragma'] = 'public';
|
|
$headers['Cache-Control'] = "max-age=$lifetime, public, must-revalidate, proxy-revalidate";
|
|
break;
|
|
|
|
case 'no_cache':
|
|
$headers['Pragma'] = 'no-cache';
|
|
$headers['Cache-Control'] = 'max-age=0, private, no-store, no-cache, must-revalidate';
|
|
break;
|
|
}
|
|
}
|
|
|
|
return array(
|
|
'etag' => $c->get_boolean( $prefix . 'etag' ),
|
|
'expires' => $c->get_boolean( $prefix . '.expires' ),
|
|
'lifetime' => $lifetime,
|
|
'static' => $headers
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Filters headers set by WordPress
|
|
*
|
|
* @param unknown $headers
|
|
* @param unknown $wp
|
|
* @return
|
|
*/
|
|
function filter_wp_headers( $headers, $wp ) {
|
|
if ( !empty( $wp->query_vars['feed'] ) )
|
|
unset( $headers['ETag'] );
|
|
return $headers;
|
|
}
|
|
|
|
/**
|
|
* Admin notice for Content-Security-Policy-Report-Only that displays if the feature is enabled and the report-uri/to isn't defined.
|
|
*
|
|
* @since 2.2.13
|
|
*/
|
|
public function admin_notices() {
|
|
if ( $this->_config->get_boolean( 'browsercache.security.cspro' ) && empty( $this->_config->get_string( 'browsercache.security.cspro.reporturi' ) ) && empty( $this->_config->get_string( 'browsercache.security.cspro.reportto' ) ) ) {
|
|
$message = '<p>' . sprintf(
|
|
// translators: 1 opening HTML a tag to Browser Cache CSP-Report-Only settings, 2 closing HTML a tag.
|
|
esc_html__(
|
|
'The Content Security Policy - Report Only requires the "report-uri" and/or "report-to" directives. Please define one or both of these directives %1$shere%2$s.',
|
|
'w3-total-cache'
|
|
),
|
|
'<a href="' . Util_Ui::admin_url( 'admin.php?page=w3tc_browsercache#browsercache__security__cspro' ) . '" target="_blank" alt="' . esc_attr__( 'Browser Cache Content-Security-Policy-Report-Only Settings', 'w3-total-cache' ) . '">',
|
|
'</a>'
|
|
);
|
|
Util_Ui::error_box( $message );
|
|
}
|
|
}
|
|
}
|