AlkantarClanX12
Your IP : 13.59.87.145
<?php
namespace W3TC;
/**
* Class Varnish_Flush
*/
class Varnish_Flush {
/**
* Debug flag
*
* @var bool
*/
var $_debug = false;
/**
* Varnish servers
*
* @var array
*/
var $_servers = array();
/**
* Operation timeout
*
* @var int
*/
var $_timeout = 30;
/**
* Advanced cache config
*/
var $_config = null;
/**
* Array of already flushed urls
*
* @var array
*/
private $queued_urls = array();
private $flush_operation_requested = false;
/**
* PHP5-style constructor
*/
function __construct() {
$this->_config = Dispatcher::config();
$this->_debug = $this->_config->get_boolean( 'varnish.debug' );
$this->_servers = $this->_config->get_array( 'varnish.servers' );
$this->_timeout = $this->_config->get_integer( 'timelimit.varnish_purge' );
}
/**
* Purge URI
*
* @param string $url
* @return boolean
*/
protected function _purge( $url ) {
@set_time_limit( $this->_timeout );
$return = true;
foreach ( (array) $this->_servers as $server ) {
$response = $this->_request( $server, $url );
if ( is_wp_error( $response ) ) {
$this->_log( $url, sprintf( 'Unable to send request: %s.', implode( '; ', $response->get_error_messages() ) ) );
$return = false;
} elseif ( $response['response']['code'] !== 200 ) {
$this->_log( $url, 'Bad response: ' . $response['response']['status'] );
$return = false;
} else {
$this->_log( $url, 'PURGE OK' );
}
}
return $return;
}
/*
* Sends purge request. Cannt use default wp HTTP implementation
* if we send request to different host than specified in $url
*
* @param $url string
*/
function _request( $varnish_server, $url ) {
$parse_url = @parse_url( $url );
if ( !$parse_url || !isset( $parse_url['host'] ) )
return new \WP_Error( 'http_request_failed', 'Unrecognized URL format ' . $url );
$host = $parse_url['host'];
$port = ( isset( $parse_url['port'] ) ? (int) $parse_url['port'] : 80 );
$path = ( !empty( $parse_url['path'] ) ? $parse_url['path'] : '/' );
$query = ( isset( $parse_url['query'] ) ? $parse_url['query'] : '' );
$request_uri = $path . ( $query != '' ? '?' . $query : '' );
list( $varnish_host, $varnish_port ) =
Util_Content::endpoint_to_host_port( $varnish_server, 80 );
// if url host is the same as varnish server - we can use regular
// wordpress http infrastructure, otherwise custom request should be
// sent using fsockopen, since we send request to other server than
// specified by $url
if ( $host == $varnish_host && $port == $varnish_port )
return Util_Http::request( $url, array( 'method' => 'PURGE' ) );
$request_headers_array = array(
sprintf( 'PURGE %s HTTP/1.1', $request_uri ),
sprintf( 'Host: %s', $host ),
sprintf( 'User-Agent: %s', W3TC_POWERED_BY ),
'Connection: close'
);
$request_headers = implode( "\r\n", $request_headers_array );
$request = $request_headers . "\r\n\r\n";
// log what we are about to do
$this->_log( $url, sprintf( 'Connecting to %s ...', $varnish_host ) );
$this->_log( $url, sprintf( 'PURGE %s HTTP/1.1', $request_uri ) );
$this->_log( $url, sprintf( 'Host: %s', $host ) );
$errno = null;
$errstr = null;
$fp = @fsockopen( $varnish_host, $varnish_port, $errno, $errstr, 10 );
if ( !$fp )
return new \WP_Error( 'http_request_failed', $errno . ': ' . $errstr );
@stream_set_timeout( $fp, 60 );
@fputs( $fp, $request );
$response = '';
while ( !@feof( $fp ) )
$response .= @fgets( $fp, 4096 );
@fclose( $fp );
list( $response_headers, $contents ) = explode( "\r\n\r\n", $response, 2 );
$matches = null;
if ( preg_match( '~^HTTP/1.[01] (\d+)~', $response_headers, $matches ) ) {
$code = (int)$matches[1];
$a = explode( "\n", $response_headers );
$status = ( count( $a ) >= 1 ? $a[0] : '' );
$return = array(
'response' => array(
'code' => $code,
'status' => $status
)
);
return $return;
}
return new \WP_Error( 'http_request_failed',
'Unrecognized response header' . $response_headers );
}
/**
* Write log entry
*
* @param string $url
* @param string $msg
* @return bool|int
*/
function _log( $url, $msg ) {
if ( $this->_debug ) {
$data = sprintf( "[%s] [%s] %s\n", date( 'r' ), $url, $msg );
$data = strtr( $data, '<>', '' );
$filename = Util_Debug::log_filename( 'varnish' );
return @file_put_contents( $filename, $data, FILE_APPEND );
}
return true;
}
/**
* Flush varnish cache
*/
function flush() {
$this->flush_operation_requested = true;
return true;
}
private function do_flush() {
if ( !is_network_admin() ) {
$full_urls = array( get_home_url() . '/.*' );
$full_urls = Util_PageUrls::complement_with_mirror_urls(
$full_urls );
foreach ( $full_urls as $url )
$this->_purge( $url );
} else {
// todo: remove. doesnt work for all caches.
// replace with tool to flush network
global $wpdb;
$protocall = Util_Environment::is_https() ? 'https://' : 'http://';
// If WPMU Domain Mapping plugin is installed and active
if ( defined( 'SUNRISE_LOADED' ) && SUNRISE_LOADED && isset( $wpdb->dmtable ) && !empty( $wpdb->dmtable ) ) {
$blogs = $wpdb->get_results( "
SELECT {$wpdb->blogs}.domain, {$wpdb->blogs}.path, {$wpdb->dmtable}.domain AS mapped_domain
FROM {$wpdb->dmtable}
RIGHT JOIN {$wpdb->blogs} ON {$wpdb->dmtable}.blog_id = {$wpdb->blogs}.blog_id
WHERE site_id = {$wpdb->siteid}
AND spam = 0
AND deleted = 0
AND archived = '0'" );
foreach ( $blogs as $blog ) {
if ( !isset( $blog->mapped_domain ) )
$url = $protocall . $blog->domain . ( strlen( $blog->path )>1? '/' . trim( $blog->path, '/' ) : '' ) . '/.*';
else
$url = $protocall . $blog->mapped_domain . '/.*';
$this->_purge( $url );
}
}else {
if ( !Util_Environment::is_wpmu_subdomain() ) {
$this->_purge( get_home_url().'/.*' );
} else {
$blogs = $wpdb->get_results( "
SELECT domain, path
FROM {$wpdb->blogs}
WHERE site_id = '{$wpdb->siteid}'
AND spam = 0
AND deleted = 0
AND archived = '0'" );
foreach ( $blogs as $blog ) {
$url = $protocall . $blog->domain . ( strlen( $blog->path )>1? '/' . trim( $blog->path, '/' ) : '' ) . '/.*';
$this->_purge( $url );
}
}
}
}
}
/**
* Flushes varnish post cache
*
* @param integer $post_id Post ID.
* @param boolean $force Force flag (optional).
*
* @return boolean
*/
function flush_post( $post_id, $force ) {
if ( !$post_id ) {
$post_id = Util_Environment::detect_post_id();
}
if ( $post_id ) {
$full_urls = array();
$post = null;
$terms = array();
$feeds = $this->_config->get_array( 'pgcache.purge.feed.types' );
$limit_post_pages = $this->_config->get_integer( 'pgcache.purge.postpages_limit' );
if ( $this->_config->get_boolean( 'pgcache.purge.terms' ) || $this->_config->get_boolean( 'varnish.pgcache.feed.terms' ) ) {
$taxonomies = get_post_taxonomies( $post_id );
$terms = wp_get_post_terms( $post_id, $taxonomies );
}
switch ( true ) {
case $this->_config->get_boolean( 'pgcache.purge.author' ):
case $this->_config->get_boolean( 'pgcache.purge.archive.daily' ):
case $this->_config->get_boolean( 'pgcache.purge.archive.monthly' ):
case $this->_config->get_boolean( 'pgcache.purge.archive.yearly' ):
case $this->_config->get_boolean( 'pgcache.purge.feed.author' ):
$post = get_post( $post_id );
}
$front_page = get_option( 'show_on_front' );
/**
* Home (Frontpage) URL
*/
if ( ( $this->_config->get_boolean( 'pgcache.purge.home' ) && $front_page == 'posts' )||
$this->_config->get_boolean( 'pgcache.purge.front_page' ) ) {
$full_urls = array_merge( $full_urls,
Util_PageUrls::get_frontpage_urls( $limit_post_pages ) );
}
/**
* Home (Post page) URL
*/
if ( $this->_config->get_boolean( 'pgcache.purge.home' ) && $front_page != 'posts' ) {
$full_urls = array_merge( $full_urls,
Util_PageUrls::get_postpage_urls( $limit_post_pages ) );
}
/**
* Post URL
*/
if ( $this->_config->get_boolean( 'pgcache.purge.post' ) || $force ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_urls( $post_id ) );
}
/**
* Post comments URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.comments' ) && function_exists( 'get_comments_pagenum_link' ) ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_comments_urls( $post_id ) );
}
/**
* Post author URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.author' ) && $post ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_author_urls( $post->post_author, $limit_post_pages ) );
}
/**
* Post terms URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.terms' ) ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_terms_urls( $terms, $limit_post_pages ) );
}
/**
* Daily archive URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.archive.daily' ) && $post ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_daily_archive_urls( $post, $limit_post_pages ) );
}
/**
* Monthly archive URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.archive.monthly' ) && $post ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_monthly_archive_urls( $post, $limit_post_pages ) );
}
/**
* Yearly archive URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.archive.yearly' ) && $post ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_yearly_archive_urls( $post, $limit_post_pages ) );
}
/**
* Feed URLs
*/
if ( $this->_config->get_boolean( 'pgcache.purge.feed.blog' ) ) {
$full_urls = array_merge( $full_urls,
Util_PageUrls::get_feed_urls( $feeds ) );
}
if ( $this->_config->get_boolean( 'pgcache.purge.feed.comments' ) ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_feed_comments_urls( $post_id, $feeds ) );
}
if ( $this->_config->get_boolean( 'pgcache.purge.feed.author' ) && $post ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_feed_author_urls( $post->post_author, $feeds ) );
}
if ( $this->_config->get_boolean( 'pgcache.purge.feed.terms' ) ) {
$full_urls = array_merge( $full_urls, Util_PageUrls::get_feed_terms_urls( $terms, $feeds ) );
}
/**
* Purge selected pages
*/
if ( $this->_config->get_array( 'pgcache.purge.pages' ) ) {
$pages = $this->_config->get_array( 'pgcache.purge.pages' );
$full_urls = array_merge( $full_urls, Util_PageUrls::get_pages_urls( $pages ) );
}
if ( $this->_config->get_string( 'pgcache.purge.sitemap_regex' ) ) {
$sitemap_regex = $this->_config->get_string( 'pgcache.purge.sitemap_regex' );
$full_urls[] = Util_Environment::home_domain_root_url() . '/' . trim( $sitemap_regex, "^$" );
}
// add mirror urls
$full_urls = Util_PageUrls::complement_with_mirror_urls(
$full_urls );
$full_urls = apply_filters( 'varnish_flush_post_queued_urls',
$full_urls );
/**
* Queue flush
*/
if ( count( $full_urls ) ) {
foreach ( $full_urls as $url )
$this->queued_urls[$url] = '*';
}
return true;
}
return false;
}
/**
* Flush a single url
*
* @param unknown $url
*/
function flush_url( $url ) {
$this->_purge( $url );
}
/**
* Flushes global and repeated urls
*/
function flush_post_cleanup() {
if ( $this->flush_operation_requested ) {
$this->do_flush();
$count = 999;
$this->flush_operation_requested = false;
$this->queued_urls = array();
} else {
$count = count( $this->queued_urls );
if ( $count > 0 ) {
foreach ( $this->queued_urls as $url => $nothing )
$this->flush_url( $url );
$this->queued_urls = array();
}
}
return $count;
}
}