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<?php
namespace W3TC;
/**
* W3 Total Cache CDN Plugin
*/
class Cdn_Plugin {
/**
* CDN reject reason
*
* @var string
*/
var $cdn_reject_reason = '';
/**
* Config
*/
private $_config = null;
private $_debug = false;
private $_attachments_action = array();
function __construct() {
$this->_config = Dispatcher::config();
$this->_debug = $this->_config->get_boolean( 'cdn.debug' );
}
/**
* Runs plugin
*/
function run() {
$cdn_engine = $this->_config->get_string( 'cdn.engine' );
add_filter( 'cron_schedules', array(
$this,
'cron_schedules'
) );
add_filter( 'w3tc_footer_comment', array(
$this,
'w3tc_footer_comment'
) );
if ( !Cdn_Util::is_engine_mirror( $cdn_engine ) ) {
add_action( 'w3_cdn_cron_queue_process', array(
$this,
'cron_queue_process'
) );
add_action( 'w3_cdn_cron_upload', array(
$this,
'cron_upload'
) );
add_action( 'switch_theme', array(
$this,
'switch_theme'
) );
add_filter( 'update_feedback', array(
$this,
'update_feedback'
) );
}
$flush_on_actions = !$this->_config->get_boolean( 'cdn.flush_manually' );
if ( $flush_on_actions ) {
add_action( 'delete_attachment',
array( $this, 'delete_attachment' ) );
add_filter( 'wp_insert_attachment_data',
array( $this, 'check_inserting_new_attachment' ), 10, 2 );
add_filter( 'update_attached_file',
array( $this, 'update_attached_file' ) );
add_filter( 'wp_update_attachment_metadata',
array( $this, 'update_attachment_metadata' ) );
}
add_filter( 'w3tc_preflush_cdn_all',
array( $this, 'w3tc_preflush_cdn_all' ), 10, 2 );
add_filter( 'w3tc_admin_bar_menu',
array( $this, 'w3tc_admin_bar_menu' ) );
if ( is_admin() ) {
add_action( 'w3tc_config_ui_save-w3tc_cdn', array(
$this, 'change_canonical_header' ), 0, 0 );
add_filter( 'w3tc_module_is_running-cdn', array( $this, 'cdn_is_running' ) );
}
if ( !is_admin() || $this->_config->get_boolean( 'cdn.admin.media_library' ) ) {
add_filter( 'wp_prepare_attachment_for_js',
array( $this, 'wp_prepare_attachment_for_js' ), 0 );
}
/**
* Start rewrite engine
*/
if ( $this->can_cdn() ) {
Util_Bus::add_ob_callback( 'cdn', array( $this, 'ob_callback' ) );
}
if ( is_admin() && Cdn_Util::can_purge( $cdn_engine ) ) {
add_filter( 'media_row_actions', array(
$this,
'media_row_actions'
), 0, 2 );
}
add_filter( 'w3tc_minify_http2_preload_url',
array( $this, 'w3tc_minify_http2_preload_url' ), 3000 );
}
/**
* Instantiates worker with admin functionality on demand
*
* @return Cdn_Core_Admin
*/
function get_admin() {
return Dispatcher::component( 'Cdn_Core_Admin' );
}
/**
* Cron queue process event
*/
function cron_queue_process() {
$queue_limit = $this->_config->get_integer( 'cdn.queue.limit' );
return $this->get_admin()->queue_process( $queue_limit );
}
/**
* Cron upload event
*/
function cron_upload() {
$files = $this->get_files();
$upload = array();
$results = array();
$common = Dispatcher::component( 'Cdn_Core' );
foreach ( $files as $file ) {
$local_path = $common->docroot_filename_to_absolute_path( $file );
$remote_path = $common->uri_to_cdn_uri( $common->docroot_filename_to_uri( $file ) );
$upload[] = $common->build_file_descriptor( $local_path, $remote_path );
}
$common->upload( $upload, true, $results );
}
function check_inserting_new_attachment( $data, $postarr ) {
$this->_attachments_action[ $postarr['file'] ] = empty( $postarr['ID'] ) ? 'insert' : 'update';
return $data;
}
public function w3tc_preflush_cdn_all( $do_flush, $extras = array() ) {
if ( $this->_config->get_boolean( 'cdn.flush_manually' ) ) {
if ( !isset( $extras['ui_action'] ) ) {
$do_flush = false;
}
}
return $do_flush;
}
/**
* Update attachment file
*
* Upload _wp_attached_file
*
* @param string $attached_file
* @return string
*/
function update_attached_file( $attached_file ) {
$common = Dispatcher::component( 'Cdn_Core' );
$files = $common->get_files_for_upload( $attached_file );
$files = apply_filters( 'w3tc_cdn_update_attachment', $files );
$results = array();
$cdn_engine = $this->_config->get_string( 'cdn.engine' );
if ( Cdn_Util::is_engine_mirror( $cdn_engine ) ) {
if ( ! array_key_exists( $attached_file, $this->_attachments_action ) || $this->_attachments_action[ $attached_file ] === 'update' ) {
$common->purge( $files, $results );
}
} else {
$common->upload( $files, true, $results );
}
return $attached_file;
}
/**
* On attachment delete action
*
* Delete _wp_attached_file, _wp_attachment_metadata, _wp_attachment_backup_sizes
*
* @param integer $attachment_id
*/
function delete_attachment( $attachment_id ) {
$common = Dispatcher::component( 'Cdn_Core' );
$files = $common->get_attachment_files( $attachment_id );
$files = apply_filters( 'w3tc_cdn_delete_attachment', $files );
$results = array();
$cdn_engine = $this->_config->get_string( 'cdn.engine' );
if ( Cdn_Util::is_engine_mirror( $cdn_engine ) ) {
$common->purge( $files, $results );
} else {
$common->delete( $files, true, $results );
}
}
/**
* Update attachment metadata filter
*
* Upload _wp_attachment_metadata
*
* @param array $metadata
* @return array
*/
function update_attachment_metadata( $metadata ) {
$common = Dispatcher::component( 'Cdn_Core' );
$files = $common->get_metadata_files( $metadata );
$files = apply_filters( 'w3tc_cdn_update_attachment_metadata', $files );
$results = array();
$cdn_engine = $this->_config->get_string( 'cdn.engine' );
if ( Cdn_Util::is_engine_mirror( $cdn_engine ) ) {
$common->purge( $files, $results );
} else {
$common->upload( $files, true, $results );
}
return $metadata;
}
/**
* Cron schedules filter
*
* @param array $schedules
* @return array
*/
function cron_schedules( $schedules ) {
$c = $this->_config;
if ( $c->get_boolean( 'cdn.enabled' ) &&
!Cdn_Util::is_engine_mirror( $c->get_string( 'cdn.engine' ) ) ) {
$queue_interval = $c->get_integer( 'cdn.queue.interval' );
$schedules['w3_cdn_cron_queue_process'] = array(
'interval' => $queue_interval,
'display' => sprintf(
'[W3TC] CDN queue process (every %d seconds)', $queue_interval
)
);
}
if ( $c->get_boolean( 'cdn.enabled' ) &&
$c->get_boolean( 'cdn.autoupload.enabled' ) &&
!Cdn_Util::is_engine_mirror( $c->get_string( 'cdn.engine' ) ) ) {
$autoupload_interval = $c->get_integer( 'cdn.autoupload.interval' );
$schedules['w3_cdn_cron_upload'] = array(
'interval' => $autoupload_interval,
'display' => sprintf(
'[W3TC] CDN auto upload (every %d seconds)', $autoupload_interval
)
);
}
return $schedules;
}
/**
* Switch theme action
*/
function switch_theme() {
$state = Dispatcher::config_state();
$state->set( 'cdn.show_note_theme_changed', true );
$state->save();
}
/**
* WP Upgrade action hack
*
* @param string $message
*/
function update_feedback( $message ) {
if ( $message == __( 'Upgrading database' ) ) {
$state = Dispatcher::config_state();
$state->set( 'cdn.show_note_wp_upgraded', true );
$state->save();
}
}
/**
* OB Callback
*
* @param string $buffer
* @return string
*/
function ob_callback( $buffer ) {
if ( $buffer != '' && Util_Content::is_html_xml( $buffer ) ) {
if ( $this->can_cdn2( $buffer ) ) {
$srcset_helper = new _Cdn_Plugin_ContentFilter();
$buffer = $srcset_helper->replace_all_links( $buffer );
if ( $this->_debug ) {
$replaced_urls = $srcset_helper->get_replaced_urls();
$buffer = $this->w3tc_footer_comment_after(
$buffer, $replaced_urls );
}
}
}
return $buffer;
}
/**
* Returns array of files to upload
*
* @return array
*/
function get_files() {
$files = array();
if ( $this->_config->get_boolean( 'cdn.includes.enable' ) ) {
$files = array_merge( $files, $this->get_files_includes() );
}
if ( $this->_config->get_boolean( 'cdn.theme.enable' ) ) {
$files = array_merge( $files, $this->get_files_theme() );
}
if ( $this->_config->get_boolean( 'cdn.minify.enable' ) ) {
$files = array_merge( $files, $this->get_files_minify() );
}
if ( $this->_config->get_boolean( 'cdn.custom.enable' ) ) {
$files = array_merge( $files, $this->get_files_custom() );
}
return $files;
}
/**
* Exports includes to CDN
*
* @return array
*/
function get_files_includes() {
$includes_root = Util_Environment::normalize_path( ABSPATH . WPINC );
$doc_root = Util_Environment::normalize_path( Util_Environment::document_root() );
$includes_path = ltrim( str_replace( $doc_root, '', $includes_root ), '/' );
$files = Cdn_Util::search_files(
$includes_root, $includes_path, $this->_config->get_string( 'cdn.includes.files' )
);
return $files;
}
/**
* Exports theme to CDN
*
* @return array
*/
function get_files_theme() {
/**
* If mobile or referrer support enabled
* we should upload whole themes directory
*/
if ( $this->_config->get_boolean( 'mobile.enabled' )
|| $this->_config->get_boolean( 'referrer.enabled' ) ) {
$themes_root = get_theme_root();
} else {
$themes_root = get_stylesheet_directory();
}
$themes_root = Util_Environment::normalize_path( $themes_root );
$themes_path = ltrim( str_replace(
Util_Environment::normalize_path( Util_Environment::document_root() ), '', $themes_root ), '/' );
$files = Cdn_Util::search_files(
$themes_root, $themes_path, $this->_config->get_string( 'cdn.theme.files' )
);
return $files;
}
/**
* Exports min files to CDN
*
* @return array
*/
function get_files_minify() {
$files = array();
if ( $this->_config->get_boolean( 'minify.rewrite' ) &&
Util_Rule::can_check_rules() &&
( !$this->_config->get_boolean( 'minify.auto' ) ||
Cdn_Util::is_engine_mirror( $this->_config->get_string( 'cdn.engine' ) ) ) ) {
$minify = Dispatcher::component( 'Minify_Plugin' );
$document_root = Util_Environment::normalize_path(
Util_Environment::document_root() );
$minify_root = Util_Environment::normalize_path(
Util_Environment::cache_blog_dir( 'minify' ) );
$minify_path = ltrim( str_replace( $document_root, '', $minify_root ), '/' );
$urls = $minify->get_urls();
// in WPMU + network admin (this code used for minify manual only)
// common minify files are stored under context of main blog (i.e. 1)
// but have urls of 0 blog, so download has to be used
if ( $this->_config->get_string( 'minify.engine' ) == 'file' &&
!( Util_Environment::is_wpmu() && is_network_admin() ) ) {
foreach ( $urls as $url ) {
Util_Http::get( $url );
}
$files = Cdn_Util::search_files( $minify_root,
$minify_path, '*.css;*.js' );
} else {
foreach ( $urls as $url ) {
$file = Util_Environment::normalize_file_minify( $url );
$file = Util_Environment::translate_file( $file );
if ( !Util_Environment::is_url( $file ) ) {
$file = $document_root . '/' . $file;
$file = ltrim( str_replace( $minify_root, '', $file ), '/' );
$dir = dirname( $file );
if ( $dir ) {
Util_File::mkdir( $dir, 0777, $minify_root );
}
if ( Util_Http::download( $url, $minify_root . '/' . $file ) !== false ) {
$files[] = $minify_path . '/' . $file;
}
}
}
}
}
return $files;
}
/**
* Exports custom files to CDN
*
* @return array
*/
function get_files_custom() {
$files = array();
$document_root = Util_Environment::normalize_path(
Util_Environment::document_root() );
$custom_files = $this->_config->get_array( 'cdn.custom.files' );
$custom_files = array_map( array( '\W3TC\Util_Environment', 'parse_path' ), $custom_files );
$site_root = Util_Environment::normalize_path( Util_Environment::site_root() );
$path = Util_Environment::site_url_uri();
$site_root_dir = str_replace( $document_root, '', $site_root );
if ( strstr( WP_CONTENT_DIR, Util_Environment::site_root() ) === false ) {
$site_root = Util_Environment::normalize_path( Util_Environment::document_root() );
$path = '';
}
$content_path = trim( str_replace( WP_CONTENT_DIR, '', $site_root ), '/\\' );
foreach ( $custom_files as $custom_file ) {
if ( $custom_file != '' ) {
$custom_file = Cdn_Util::replace_folder_placeholders( $custom_file );
$custom_file = Util_Environment::normalize_file( $custom_file );
if ( !Util_Environment::is_wpmu() ) {
$dir = trim( dirname( $custom_file ), '/\\' );
$rel_path = trim( dirname( $custom_file ), '/\\' );
} else
$rel_path = $dir = trim( dirname( $custom_file ), '/\\' );
if ( strpos( $dir, '<currentblog>' ) != false ) {
$rel_path = $dir = str_replace(
'<currentblog>', 'blogs.dir/'
. Util_Environment::blog_id(), $dir
);
}
if ( $dir == '.' ) {
$rel_path = $dir = '';
}
$mask = basename( $custom_file );
$files = array_merge(
$files, Cdn_Util::search_files( $document_root . '/'
. $dir, $rel_path, $mask )
);
}
}
return $files;
}
/**
* Check if we can do CDN logic
*
* @return boolean
*/
function can_cdn() {
/**
* Skip if admin
*/
if ( defined( 'WP_ADMIN' ) ) {
$this->cdn_reject_reason = 'wp-admin';
return false;
}
/**
* Check for WPMU's and WP's 3.0 short init
*/
if ( defined( 'SHORTINIT' ) && SHORTINIT ) {
$this->cdn_reject_reason = 'Short init';
return false;
}
/**
* Check User agent
*/
if ( !$this->check_ua() ) {
$this->cdn_reject_reason = 'user agent is rejected';
return false;
}
/**
* Check request URI
*/
if ( !$this->_check_request_uri() ) {
$this->cdn_reject_reason = 'request URI is rejected';
return false;
}
/**
* Do not replace urls if SSL and SSL support is do not replace
*/
if ( Util_Environment::is_https() && $this->_config->get_boolean( 'cdn.reject.ssl' ) ) {
$this->cdn_reject_reason = 'SSL is rejected';
return false;
}
return true;
}
/**
* Returns true if we can do CDN logic
*
* @param unknown $buffer
* @return string
*/
function can_cdn2( $buffer ) {
/**
* Check for DONOTCDN constant
*/
if ( defined( 'DONOTCDN' ) && DONOTCDN ) {
$this->cdn_reject_reason = 'DONOTCDN constant is defined';
return false;
}
/**
* Check logged users roles
*/
if ( $this->_config->get_boolean(
'cdn.reject.logged_roles' ) && !$this->_check_logged_in_role_allowed()
) {
$this->cdn_reject_reason = 'logged in role is rejected';
return false;
}
return true;
}
/**
* Checks User Agent
*
* @return boolean
*/
function check_ua() {
$uas = array_merge( $this->_config->get_array( 'cdn.reject.ua' ), array(
W3TC_POWERED_BY
) );
foreach ( $uas as $ua ) {
if ( !empty( $ua ) ) {
if ( isset( $_SERVER['HTTP_USER_AGENT'] ) && stristr(
$_SERVER['HTTP_USER_AGENT'], $ua ) !== false
)
return false;
}
}
return true;
}
/**
* Checks request URI
*
* @return boolean
*/
function _check_request_uri() {
$reject_uri = $this->_config->get_array( 'cdn.reject.uri' );
$reject_uri = array_map( array( '\W3TC\Util_Environment', 'parse_path' ), $reject_uri );
foreach ( $reject_uri as $expr ) {
$expr = trim( $expr );
$expr = str_replace( '~', '\~', $expr );
if ( $expr != '' && preg_match( '~' . $expr . '~i', $_SERVER['REQUEST_URI'] ) ) {
return false;
}
}
if ( Util_Request::get_string( 'wp_customize' ) )
return false;
return true;
}
/**
* Check if logged in user role is allwed to use CDN
*
* @return boolean
*/
private function _check_logged_in_role_allowed() {
$current_user = wp_get_current_user();
if ( !is_user_logged_in() )
return true;
$roles = $this->_config->get_array( 'cdn.reject.roles' );
if ( empty( $roles ) || empty( $current_user->roles ) ||
!is_array( $current_user->roles ) )
return true;
foreach ( $current_user->roles as $role ) {
if ( in_array( $role, $roles ) )
return false;
}
return true;
}
/**
* media_row_actions filter
*
* @param array $actions
* @param object $post
* @return array
*/
function media_row_actions( $actions, $post ) {
return $this->get_admin()->media_row_actions( $actions, $post );
}
/**
*
*
* @param unknown $current_state
* @return bool
*/
function cdn_is_running( $current_state ) {
$admin = $this->get_admin();
return $admin->is_running();
}
/**
* Change canonical header
*/
function change_canonical_header() {
$admin = $this->get_admin();
$admin->change_canonical_header();
}
/**
* Adjusts attachment urls to cdn. This is for those who rely on
* wp_prepare_attachment_for_js()
*
* @param array $response Mixed collection of data about the attachment object
* @return array
*/
public function wp_prepare_attachment_for_js( $response ) {
$response['url'] = $this->wp_prepare_attachment_for_js_url( $response['url'] );
$response['link'] = $this->wp_prepare_attachment_for_js_url( $response['link'] );
if ( !empty( $response['sizes'] ) ) {
foreach( $response['sizes'] as $size => &$data ) {
$data['url'] = $this->wp_prepare_attachment_for_js_url( $data['url'] );
}
}
return $response;
}
/**
* An attachment's local url to modify into a cdn url
*
* @param string $url the local url to modify
* @return string
*/
private function wp_prepare_attachment_for_js_url( $url ) {
$url = trim( $url );
if ( !empty( $url ) ) {
$parsed = parse_url( $url );
$uri = ( isset( $parsed['path'] ) ? $parsed['path'] : '/' ) .
( isset( $parsed['query'] ) ? '?' . $parsed['query'] : '' );
$wp_upload_dir = wp_upload_dir();
$upload_base_url = $wp_upload_dir['baseurl'];
if ( substr($url, 0, strlen( $upload_base_url ) ) == $upload_base_url ) {
$common = Dispatcher::component( 'Cdn_Core' );
$new_url = $common->url_to_cdn_url( $url, $uri );
if ( !is_null( $new_url ) ) {
$url = $new_url;
}
}
}
return $url;
}
/**
* Mutate http/2 header links
*/
public function w3tc_minify_http2_preload_url( $data ) {
$url = $data['result_link'];
$url = trim( $url );
if ( empty( $url ) ) {
return $data;
}
$parsed = parse_url( $url );
$uri = ( isset( $parsed['path'] ) ? $parsed['path'] : '/' ) .
( isset( $parsed['query'] ) ? '?' . $parsed['query'] : '' );
$common = Dispatcher::component( 'Cdn_Core' );
$new_url = $common->url_to_cdn_url( $url, $uri );
if ( is_null( $new_url ) ) {
return $data;
}
$data['result_link'] = $new_url;
// url_to_cdn_url processed by browsercache internally
$data['browsercache_processed'] = '*';
return $data;
}
public function w3tc_admin_bar_menu( $menu_items ) {
$cdn_engine = $this->_config->get_string( 'cdn.engine' );
if ( Cdn_Util::can_purge_all( $cdn_engine ) ) {
$menu_items['20710.cdn'] = array(
'id' => 'w3tc_cdn_flush_all',
'parent' => 'w3tc_flush',
'title' => __( 'CDN: All', 'w3-total-cache' ),
'href' => wp_nonce_url( admin_url(
'admin.php?page=w3tc_cdn&w3tc_flush_cdn' ),
'w3tc' )
);
}
if ( Cdn_Util::can_purge( $cdn_engine ) ) {
$menu_items['20790.cdn'] = array(
'id' => 'w3tc_cdn_flush',
'parent' => 'w3tc_flush',
'title' => __( 'CDN: Manual Purge', 'w3-total-cache' ),
'href' => wp_nonce_url( admin_url( 'admin.php?page=w3tc_cdn&w3tc_cdn_purge' ), 'w3tc' ),
'meta' => array( 'onclick' => "w3tc_popupadmin_bar(this.href); return false" )
);
}
return $menu_items;
}
public function w3tc_footer_comment( $strings ) {
$common = Dispatcher::component( 'Cdn_Core' );
$cdn = $common->get_cdn();
$via = $cdn->get_via();
$strings[] = sprintf(
__( 'Content Delivery Network via %s%s', 'w3-total-cache' ),
( $via ? $via : 'N/A' ),
( empty( $this->cdn_reject_reason ) ? '' :
sprintf( ' (%s)', $this->cdn_reject_reason ) ) );
if ( $this->_debug ) {
$strings[] = '{w3tc_cdn_debug_info}';
}
return $strings;
}
public function w3tc_footer_comment_after( $buffer, $replaced_urls ) {
$strings = array();
if ( is_array( $replaced_urls ) &&
count( $replaced_urls ) ) {
$strings[] = "Replaced URLs for CDN:";
foreach ( $replaced_urls as $old_url => $new_url ) {
$strings[] = sprintf( "%s => %s",
Util_Content::escape_comment( $old_url ),
Util_Content::escape_comment( $new_url ) );
}
$strings[] = '';
}
$buffer = str_replace( '{w3tc_cdn_debug_info}',
implode( "\n", $strings ), $buffer );
return $buffer;
}
}
class _Cdn_Plugin_ContentFilter {
private $_regexps = array();
private $_placeholders = array();
private $_config;
private $_replaced_urls = array();
/**
* If background uploading already scheduled
*
* @var boolean
*/
private static $_upload_scheduled = false;
function __construct() {
$this->_config = Dispatcher::config();
}
function replace_all_links( $buffer ) {
$this->fill_regexps();
$srcset_pattern = '~srcset\s*=\s*[\"\'](.*?)[\"\']~';
$buffer = preg_replace_callback(
$srcset_pattern, array( $this, '_srcset_replace_callback' ), $buffer
);
foreach ( $this->_regexps as $regexp ) {
$buffer = preg_replace_callback(
$regexp, array( $this, '_link_replace_callback' ), $buffer
);
}
if ( $this->_config->get_boolean( 'cdn.minify.enable' ) ) {
if ( $this->_config->get_boolean( 'minify.auto' ) ) {
$regexp = '~(["\'(=])\s*' .
$this->minify_url_regexp( '/[a-zA-Z0-9-_]+\.(css|js)' ) .
'~U';
if ( Cdn_Util::is_engine_mirror( $this->_config->get_string( 'cdn.engine' ) ) )
$processor = array( $this, '_link_replace_callback' );
else
$processor = array( $this, '_minify_auto_pushcdn_link_replace_callback' );
} else {
$regexp = '~(["\'(=])\s*' .
$this->minify_url_regexp(
'/[a-z0-9]+\..+\.include(-(footer|body))?(-nb)?\.[a-f0-9]+\.(css|js)' )
.'~U';
$processor = array( $this, '_link_replace_callback' );
}
$buffer = preg_replace_callback( $regexp, $processor, $buffer );
}
$buffer = $this->replace_placeholders( $buffer );
return $buffer;
}
/**
* Link replace callback
*
* @param array $matches
* @return string
*/
function _link_replace_callback( $matches ) {
list( $match, $quote, $url, , , , $path ) = $matches;
$path = ltrim( $path, '/' );
$r = $this->_link_replace_callback_checks( $match, $quote, $url, $path );
if ( is_null( $r ) ) {
$r = $this->_link_replace_callback_ask_cdn( $match, $quote, $url, $path );
}
return $r;
}
function _srcset_replace_callback( $matches ) {
list( $match, $srcset ) = $matches;
if ( empty( $this->_regexps ) )
return $match;
$index = "%srcset-" . count( $this->_placeholders ) . "%";
$srcset_urls = explode( ',', $srcset );
$new_srcset_urls = array();
foreach ( $srcset_urls as $set ) {
preg_match( "~(?P<spaces>^\s*)(?P<url>\S+)(?P<rest>.*)~", $set, $parts );
if ( isset( $parts['url'] ) ) {
foreach ( $this->_regexps as $regexp ) {
$new_url = preg_replace_callback( $regexp, array(
$this,
'_link_replace_callback'
), '"' . $parts['url'] . '">' );
if ( '"' . $parts['url'] . '">' != $new_url ) {
$parts['url'] = substr( $new_url, 1, -2 );
break;
}
}
$new_srcset_urls[] = $parts['spaces'] .$parts['url']
. $parts['rest'];
} else {
$new_srcset_urls[] = $set;
}
}
$this->_placeholders[$index] = implode( ',', $new_srcset_urls );
return 'srcset="' . $index . '"';
}
private function replace_placeholders( $buffer ) {
foreach ( $this->_placeholders as $srcset_id => $srcset_content ) {
$buffer = str_replace( $srcset_id, $srcset_content, $buffer );
}
return $buffer;
}
/**
* Gets regexp for minified files
*
* @return string
*/
private function minify_url_regexp( $filename_mask ) {
$minify_base_url = Util_Environment::filename_to_url(
Util_Environment::cache_blog_minify_dir()
);
$matches = null;
if ( !preg_match( '~((https?://)?([^/]+))(.+)~i', $minify_base_url, $matches ) )
return '';
$protocol_domain_regexp = Util_Environment::get_url_regexp( $matches[1] );
$path_regexp = Util_Environment::preg_quote( $matches[4] );
$regexp =
'(' .
'(' . $protocol_domain_regexp . ')?' .
'(' . $path_regexp . $filename_mask . ')' .
')';
return $regexp;
}
/**
*
*
* @param unknown $domain_url_regexp
* @param unknown $baseurl
* @param unknown $upload_info
* @param unknown $regexps
* @return array
*/
private function make_uploads_regexes( $domain_url_regexp, $baseurl,
$upload_info, $regexps ) {
if ( preg_match( '~' . $domain_url_regexp . '~i', $baseurl ) ) {
$regexps[] = '~(["\'(=])\s*((' . $domain_url_regexp . ')?('
. Util_Environment::preg_quote( $upload_info['baseurlpath'] )
. '([^"\')>]+)))~i';
} else {
$parsed = @parse_url( $baseurl );
$upload_url_domain_regexp = isset( $parsed['host'] )
? Util_Environment::get_url_regexp( $parsed['scheme'] . '://'
. $parsed['host'] ) : $domain_url_regexp;
$baseurlpath = isset( $parsed['path'] ) ? rtrim( $parsed['path'], '/' ) : '';
if ( $baseurlpath )
$regexps[] = '~(["\'])\s*((' . $upload_url_domain_regexp . ')?('
. Util_Environment::preg_quote( $baseurlpath )
. '([^"\'>]+)))~i';
else
$regexps[] = '~(["\'])\s*((' . $upload_url_domain_regexp
. ')(([^"\'>]+)))~i';
}
return $regexps;
}
private function fill_regexps() {
$regexps = array();
$site_path = Util_Environment::site_url_uri();
$domain_url_regexp = Util_Environment::home_domain_root_url_regexp();
$site_domain_url_regexp = false;
if ( $domain_url_regexp != Util_Environment::get_url_regexp(
Util_Environment::url_to_host( site_url() ) ) )
$site_domain_url_regexp = Util_Environment::get_url_regexp(
Util_Environment::url_to_host( site_url() )
);
if ( $this->_config->get_boolean( 'cdn.uploads.enable' ) ) {
$upload_info = Util_Http::upload_info();
if ( $upload_info ) {
$baseurl = $upload_info['baseurl'];
if ( defined( 'DOMAIN_MAPPING' ) && DOMAIN_MAPPING ) {
$parsed = @parse_url( $upload_info['baseurl'] );
$baseurl = home_url() . $parsed['path'];
}
$regexps = $this->make_uploads_regexes(
$domain_url_regexp, $baseurl, $upload_info, $regexps
);
if ( $site_domain_url_regexp )
$regexps = $this->make_uploads_regexes(
$site_domain_url_regexp, $baseurl, $upload_info, $regexps
);
}
}
if ( $this->_config->get_boolean( 'cdn.includes.enable' ) ) {
$mask = $this->_config->get_string( 'cdn.includes.files' );
if ( $mask != '' ) {
$regexps[] = '~(["\'(=])\s*((' . $domain_url_regexp .
')?(' .
Util_Environment::preg_quote( $site_path . WPINC ) .
'/(' . Cdn_Util::get_regexp_by_mask( $mask ) . ')([^"\'() >]*)))~i';
if ( $site_domain_url_regexp )
$regexps[] = '~(["\'(=])\s*((' .
$site_domain_url_regexp . ')?(' .
Util_Environment::preg_quote( $site_path . WPINC ) .
'/(' . Cdn_Util::get_regexp_by_mask( $mask ) .
')([^"\'() >]*)))~i';
}
}
if ( $this->_config->get_boolean( 'cdn.theme.enable' ) ) {
$theme_dir = preg_replace( '~'
. $domain_url_regexp . '~i', '', get_theme_root_uri() );
$mask = $this->_config->get_string( 'cdn.theme.files' );
if ( $mask != '' ) {
$regexps[] = '~(["\'(=])\s*((' . $domain_url_regexp . ')?(' .
Util_Environment::preg_quote( $theme_dir ) . '/(' .
Cdn_Util::get_regexp_by_mask( $mask ) . ')([^"\'() >]*)))~i';
if ( $site_domain_url_regexp ) {
$theme_dir2 = preg_replace( '~' . $site_domain_url_regexp
. '~i', '', get_theme_root_uri() );
$regexps[] = '~(["\'(=])\s*((' .
$site_domain_url_regexp . ')?(' .
Util_Environment::preg_quote( $theme_dir ) . '/(' .
Cdn_Util::get_regexp_by_mask( $mask ) .
')([^"\'() >]*)))~i';
$regexps[] = '~(["\'(=])\s*((' .
$site_domain_url_regexp . ')?(' .
Util_Environment::preg_quote( $theme_dir2 ) .
'/(' . Cdn_Util::get_regexp_by_mask( $mask ) .
')([^"\'() >]*)))~i';
}
}
}
if ( $this->_config->get_boolean( 'cdn.custom.enable' ) ) {
$masks = $this->_config->get_array( 'cdn.custom.files' );
$masks = array_map( array( '\W3TC\Cdn_Util', 'replace_folder_placeholders_to_uri' ), $masks );
$masks = array_map( array( '\W3TC\Util_Environment', 'parse_path' ), $masks );
if ( count( $masks ) ) {
$custom_regexps_urls = array();
$custom_regexps_uris = array();
$custom_regexps_docroot_related = array();
foreach ( $masks as $mask ) {
if ( !empty( $mask ) ) {
if ( Util_Environment::is_url( $mask ) ) {
$url_match = array();
if ( preg_match( '~^((https?:)?//([^/]*))(.*)~', $mask, $url_match ) ) {
$custom_regexps_urls[] = array(
'domain_url' => Util_Environment::get_url_regexp(
$url_match[1] ),
'uri' => Cdn_Util::get_regexp_by_mask( $url_match[4] )
);
}
} elseif ( substr( $mask, 0, 1 ) == '/' ) { // uri
$custom_regexps_uris[] = Cdn_Util::get_regexp_by_mask( $mask );
} else {
$file = Util_Environment::normalize_path( $mask ); // \ -> backspaces
$file = str_replace( Util_Environment::site_root(), '', $file );
$file = ltrim( $file, '/' );
$custom_regexps_docroot_related[] = Cdn_Util::get_regexp_by_mask( $mask );
}
}
}
if ( count( $custom_regexps_urls ) > 0 ) {
foreach ( $custom_regexps_urls as $regexp ) {
$regexps[] = '~(["\'(=])\s*((' . $regexp['domain_url'] .
')?((' . $regexp['uri'] . ')([^"\'() >]*)))~i';
}
}
if ( count( $custom_regexps_uris ) > 0 ) {
$regexps[] = '~(["\'(=])\s*((' . $domain_url_regexp .
')?((' . implode( '|', $custom_regexps_uris ) . ')([^"\'() >]*)))~i';
}
if ( count( $custom_regexps_docroot_related ) > 0 ) {
$regexps[] = '~(["\'(=])\s*((' . $domain_url_regexp .
')?(' . Util_Environment::preg_quote( $site_path ) .
'(' . implode( '|', $custom_regexps_docroot_related ) . ')([^"\'() >]*)))~i';
if ( $site_domain_url_regexp )
$regexps[] = '~(["\'(=])\s*((' .
$site_domain_url_regexp . ')?(' .
Util_Environment::preg_quote( $site_path ) . '(' .
implode( '|', $custom_regexps_docroot_related ) . ')([^"\'() >]*)))~i';
}
}
}
$this->_regexps = $regexps;
}
/**
* Link replace callback, basic checks step
*
* @param string $match
* @param string $quote
* @param string $url
* @param string $path
* @return null|string
*/
function _link_replace_callback_checks( $match, $quote, $url, $path ) {
global $wpdb;
static $queue = null, $reject_files = null;
/**
* Check if URL was already replaced
*/
if ( isset( $this->_replaced_urls[$url] ) ) {
return $quote . $this->_replaced_urls[$url];
}
/**
* Check URL for rejected files
*/
if ( $reject_files === null ) {
$reject_files = $this->_config->get_array( 'cdn.reject.files' );
}
foreach ( $reject_files as $reject_file ) {
if ( $reject_file != '' ) {
$reject_file = Cdn_Util::replace_folder_placeholders( $reject_file );
$reject_file = Util_Environment::normalize_file( $reject_file );
$reject_file_regexp = '~^('
. Cdn_Util::get_regexp_by_mask( $reject_file ) . ')~i';
if ( preg_match( $reject_file_regexp, $path ) ) {
return $match;
}
}
}
/**
* Don't replace URL for files that are in the CDN queue
*/
if ( $queue === null ) {
if ( !Cdn_Util::is_engine_mirror( $this->_config->get_string( 'cdn.engine' ) ) ) {
$sql = $wpdb->prepare( 'SELECT remote_path FROM '
. $wpdb->base_prefix . W3TC_CDN_TABLE_QUEUE
. ' WHERE remote_path = %s', $path );
$queue = $wpdb->get_var( $sql );
}
else {
$queue = false;
}
}
if ( $queue ) {
return $match;
}
return null;
}
/**
* Link replace callback, url replacement using cdn engine
*
* @param string $match
* @param string $quote
* @param string $url
* @param string $path
* @return null|string
*/
function _link_replace_callback_ask_cdn( $match, $quote, $url, $path ) {
$common = Dispatcher::component( 'Cdn_Core' );
$new_url = $common->url_to_cdn_url( $url, $path );
if ( !is_null( $new_url ) ) {
$this->_replaced_urls[$url] = $new_url;
return $quote . $new_url;
}
return $match;
}
/**
* Link replace callback for urls from minify module using auto mode and in cdn of push type
*
* @param array $matches
* @return string
*/
function _minify_auto_pushcdn_link_replace_callback( $matches ) {
static $dispatcher = null;
list( $match, $quote, $url, , , , $path ) = $matches;
$path = ltrim( $path, '/' );
$r = $this->_link_replace_callback_checks( $match, $quote, $url, $path );
/**
* Check if we can replace that URL (for auto mode it should be uploaded)
*/
if ( !Dispatcher::is_url_cdn_uploaded( $url ) ) {
Dispatcher::component( 'Cdn_Core' )->queue_upload_url( $url );
if ( !self::$_upload_scheduled ) {
wp_schedule_single_event( time(), 'w3_cdn_cron_queue_process' );
add_action( 'shutdown', 'wp_cron' );
self::$_upload_scheduled = true;
}
return $match;
}
if ( is_null( $r ) ) {
$r = $this->_link_replace_callback_ask_cdn( $match, $quote, $url, $path );
}
return $r;
}
function get_replaced_urls() {
return $this->_replaced_urls;
}
}