a22573bf0b
- WordPress core y plugins - Tema Twenty Twenty-Four configurado - Plugin allow-unfiltered-html.php simplificado - .gitignore configurado para excluir wp-config.php y uploads 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
554 lines
19 KiB
PHP
Executable File
554 lines
19 KiB
PHP
Executable File
<?php
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/**
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* File: Varnish_Flush.php
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*
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* @package W3TC
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*/
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namespace W3TC;
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/**
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* Class Varnish_Flush
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*
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* phpcs:disable PSR2.Classes.PropertyDeclaration.Underscore
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* phpcs:disable PSR2.Methods.MethodDeclaration.Underscore
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* phpcs:disable WordPress.PHP.NoSilencedErrors.Discouraged
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* phpcs:disable WordPress.WP.AlternativeFunctions
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* phpcs:disable WordPress.DB.DirectDatabaseQuery
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*/
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class Varnish_Flush {
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/**
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* Debug flag
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*
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* @var bool
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*/
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private $_debug = false;
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/**
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* Varnish servers
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*
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* @var array
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*/
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private $_servers = array();
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/**
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* Operation timeout
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*
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* @var int
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*/
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private $_timeout = 30;
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/**
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* Advanced cache config
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*
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* @var Config
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*/
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private $_config = null;
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/**
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* Array of already flushed urls
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*
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* @var array
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*/
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private $queued_urls = array();
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/**
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* Flush operation requested flag
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*
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* @var bool
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*/
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private $flush_operation_requested = false;
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/**
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* Initializes the Varnish purging system.
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*
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* Configures the object with settings for debug mode, server details, and purge timeout
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* using the dispatcher configuration.
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*
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* @return void
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*/
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public function __construct() {
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$this->_config = Dispatcher::config();
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$this->_debug = $this->_config->get_boolean( 'varnish.debug' );
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$this->_servers = $this->_config->get_array( 'varnish.servers' );
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$this->_timeout = $this->_config->get_integer( 'timelimit.varnish_purge' );
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}
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/**
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* Sends a PURGE request to all configured Varnish servers for a given URL.
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*
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* Iterates through all the servers in the configuration and attempts to send a PURGE request. Logs any errors or successes
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* during the process.
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*
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* @param string $url The URL to be purged from the Varnish cache.
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*
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* @return bool Returns `true` if all purge requests were successful, otherwise `false`.
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*
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* @details
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* - Sets the script's timeout to the configured value for long-running operations.
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* - For each server:
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* - Sends a PURGE request.
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* - Logs errors if the response is not successful or is malformed.
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* - Logs successful purge requests.
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*
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* @throws \Exception Not explicitly thrown, but errors are logged using `_log` and returned as a `WP_Error`.
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*/
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protected function _purge( $url ) {
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@set_time_limit( $this->_timeout ); // phpcs:ignore Squiz.PHP.DiscouragedFunctions.Discouraged
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$return = true;
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foreach ( (array) $this->_servers as $server ) {
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$response = $this->_request( $server, $url );
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if ( is_wp_error( $response ) ) {
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$this->_log( $url, sprintf( 'Unable to send request: %s.', implode( '; ', $response->get_error_messages() ) ) );
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$return = false;
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} elseif ( 200 !== $response['response']['code'] ) {
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$this->_log( $url, 'Bad response: ' . $response['response']['status'] );
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$return = false;
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} else {
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$this->_log( $url, 'PURGE OK' );
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}
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}
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return $return;
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}
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/**
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* Sends a PURGE request to a specific Varnish server for a given URL.
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*
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* Uses the WordPress HTTP API when the Varnish server matches the target host. Otherwise, a custom request is sent via `fsockopen`
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* for direct communication.
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*
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* @param string $varnish_server The Varnish server endpoint in the format `host:port`.
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* @param string $url The URL to be purged.
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*
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* @return array|\WP_Error An array containing the response code and status if the request is successful, or a `WP_Error` object
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* in case of failure.
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*
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* @details
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* - Validates and parses the provided URL.
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* - Determines whether to use WordPress HTTP API or `fsockopen` based on the
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* relationship between the Varnish server and the URL's host.
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* - Logs details of the purge request, including the target server and response.
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* - Handles timeouts, stream settings, and unexpected response formats.
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*
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* @throws \WP_Error Thrown if the URL format is invalid, the server connection fails, or the response is malformed.
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*/
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public function _request( $varnish_server, $url ) {
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$parse_url = @wp_parse_url( $url );
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if ( ! $parse_url || ! isset( $parse_url['host'] ) ) {
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return new \WP_Error( 'http_request_failed', 'Unrecognized URL format ' . $url );
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}
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$host = $parse_url['host'];
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$port = ( isset( $parse_url['port'] ) ? (int) $parse_url['port'] : 80 );
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$path = ( ! empty( $parse_url['path'] ) ? $parse_url['path'] : '/' );
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$query = ( isset( $parse_url['query'] ) ? $parse_url['query'] : '' );
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$request_uri = $path . ( '' !== $query ? '?' . $query : '' );
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list( $varnish_host, $varnish_port ) = Util_Content::endpoint_to_host_port( $varnish_server, 80 );
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// If url host is the same as varnish server - we can use regular WordPress http infrastructure, otherwise custom request
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// should be sent using fsockopen, since we send request to other server than specified by $url.
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if ( $host === $varnish_host && $port === $varnish_port ) {
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return Util_Http::request( $url, array( 'method' => 'PURGE' ) );
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}
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$request_headers_array = array(
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sprintf( 'PURGE %s HTTP/1.1', $request_uri ),
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sprintf( 'Host: %s', $host ),
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sprintf( 'User-Agent: %s', W3TC_POWERED_BY ),
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'Connection: close',
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);
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$request_headers = implode( "\r\n", $request_headers_array );
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$request = $request_headers . "\r\n\r\n";
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// log what we are about to do.
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$this->_log( $url, sprintf( 'Connecting to %s ...', $varnish_host ) );
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$this->_log( $url, sprintf( 'PURGE %s HTTP/1.1', $request_uri ) );
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$this->_log( $url, sprintf( 'Host: %s', $host ) );
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$errno = null;
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$errstr = null;
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$fp = @fsockopen( $varnish_host, $varnish_port, $errno, $errstr, 10 );
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if ( ! $fp ) {
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return new \WP_Error( 'http_request_failed', $errno . ': ' . $errstr );
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}
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@stream_set_timeout( $fp, 60 );
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@fputs( $fp, $request );
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$response = '';
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while ( ! @feof( $fp ) ) {
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$response .= @fgets( $fp, 4096 );
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}
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@fclose( $fp );
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list( $response_headers, $contents ) = explode( "\r\n\r\n", $response, 2 );
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$matches = null;
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if ( preg_match( '~^HTTP/1.[01] (\d+)~', $response_headers, $matches ) ) {
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$code = (int) $matches[1];
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$a = explode( "\n", $response_headers );
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$status = ( count( $a ) >= 1 ? $a[0] : '' );
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$return = array(
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'response' => array(
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'code' => $code,
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'status' => $status,
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),
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);
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return $return;
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}
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return new \WP_Error( 'http_request_failed', 'Unrecognized response header' . $response_headers );
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}
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/**
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* Logs messages related to Varnish operations when debug mode is enabled.
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*
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* Writes log messages to a designated debug file if debugging is enabled. The log file is determined by
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* `Util_Debug::log_filename('varnish')`.
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*
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* @param string $url The URL associated with the log message.
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* @param string $msg The message to be logged.
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*
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* @return bool Returns `true` if logging is disabled or if the log is successfully written. Returns `false` if file writing fails.
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*
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* @details
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* - Formats the log entry with a timestamp, URL, and message.
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* - Removes unsafe characters (`<`, `>`) from the log message to avoid potential issues.
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* - If debugging is not enabled, it exits early with a `true` value.
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*
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* @throws \Exception Not explicitly thrown but can fail silently if `file_put_contents` encounters an error.
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*/
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public function _log( $url, $msg ) {
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if ( $this->_debug ) {
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$data = sprintf( "[%s] [%s] %s\n", gmdate( 'r' ), $url, $msg );
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$data = strtr( $data, '<>', '' );
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$filename = Util_Debug::log_filename( 'varnish' );
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return @file_put_contents( $filename, $data, FILE_APPEND );
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}
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return true;
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}
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/**
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* Marks the flush operation as requested.
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*
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* This method sets the `flush_operation_requested` flag to `true`, signaling that a flush operation should be executed later.
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*
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* @return bool Always returns `true`.
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*
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* @details
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* - This method acts as a trigger or a placeholder for actual flush execution.
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* - The flag `flush_operation_requested` is used internally to track the flush status.
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*/
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public function flush() {
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$this->flush_operation_requested = true;
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return true;
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}
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/**
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* Executes the flush operation for Varnish cache.
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*
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* This method purges cache URLs either for a single site or across a multisite network, depending on the context (network admin
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* or site admin).
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*
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* @details
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* - If not in a network admin context:
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* - Purges the home URL and its mirror URLs.
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* - If in a network admin context:
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* - Handles multisite scenarios, including domain-mapped sites.
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* - Uses `SUNRISE_LOADED` and `$wpdb->dmtable` to detect the WPMU Domain Mapping plugin.
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* - Purges all domains and paths of non-spam, non-archived, non-deleted blogs.
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*
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* @return void
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*
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* @throws \Exception Not explicitly thrown, but relies on `_purge` for error handling.
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*/
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private function do_flush() {
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if ( ! is_network_admin() ) {
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$full_urls = array( get_home_url() . '/.*' );
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$full_urls = Util_PageUrls::complement_with_mirror_urls( $full_urls );
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foreach ( $full_urls as $url ) {
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$this->_purge( $url );
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}
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} else {
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// todo: remove. doesnt work for all caches. replace with tool to flush network.
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global $wpdb;
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$protocall = Util_Environment::is_https() ? 'https://' : 'http://';
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// If WPMU Domain Mapping plugin is installed and active.
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if ( defined( 'SUNRISE_LOADED' ) && SUNRISE_LOADED && isset( $wpdb->dmtable ) && ! empty( $wpdb->dmtable ) ) {
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$blogs = $wpdb->get_results(
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"
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SELECT {$wpdb->blogs}.domain, {$wpdb->blogs}.path, {$wpdb->dmtable}.domain AS mapped_domain
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FROM {$wpdb->dmtable}
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RIGHT JOIN {$wpdb->blogs} ON {$wpdb->dmtable}.blog_id = {$wpdb->blogs}.blog_id
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WHERE site_id = {$wpdb->siteid}
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AND spam = 0
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AND deleted = 0
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AND archived = '0'"
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);
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foreach ( $blogs as $blog ) {
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if ( ! isset( $blog->mapped_domain ) ) {
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$url = $protocall . $blog->domain . ( strlen( $blog->path ) > 1 ? '/' . trim( $blog->path, '/' ) : '' ) . '/.*';
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} else {
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$url = $protocall . $blog->mapped_domain . '/.*';
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}
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$this->_purge( $url );
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}
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} elseif ( ! Util_Environment::is_wpmu_subdomain() ) {
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$this->_purge( get_home_url() . '/.*' );
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} else {
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$blogs = $wpdb->get_results(
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"
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SELECT domain, path
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FROM {$wpdb->blogs}
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WHERE site_id = '{$wpdb->siteid}'
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AND spam = 0
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AND deleted = 0
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AND archived = '0'"
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);
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foreach ( $blogs as $blog ) {
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$url = $protocall . $blog->domain . ( strlen( $blog->path ) > 1 ? '/' . trim( $blog->path, '/' ) : '' ) . '/.*';
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$this->_purge( $url );
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}
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}
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}
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}
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/**
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* Flushes cache related to a specific post and its associated URLs.
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*
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* This method generates a list of URLs related to the given post, including homepages, post pages, comment pages, author pages,
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* term pages, archive pages, feeds, and custom purge pages. The URLs are queued for purging.
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*
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* @param int $post_id The ID of the post to flush. If 0, the method attempts to detect the post ID automatically.
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* @param bool $force Whether to force purging the post URL even if the configuration does not explicitly allow it.
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*
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* @return bool True if URLs were successfully queued for flushing; false otherwise.
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*
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* @global wpdb $wpdb WordPress database abstraction object used for network-level queries.
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*
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* @uses Util_Environment::detect_post_id() To detect the post ID if not provided.
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* @uses Util_PageUrls::get_frontpage_urls() To retrieve the front page URLs.
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* @uses Util_PageUrls::get_postpage_urls() To retrieve the post page URLs.
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* @uses Util_PageUrls::get_post_urls() To retrieve the post-specific URLs.
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* @uses Util_PageUrls::get_post_comments_urls() To retrieve the comment page URLs for the post.
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* @uses Util_PageUrls::get_post_author_urls() To retrieve URLs related to the post's author.
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* @uses Util_PageUrls::get_post_terms_urls() To retrieve URLs for terms associated with the post.
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* @uses Util_PageUrls::get_daily_archive_urls() To retrieve daily archive URLs for the post.
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* @uses Util_PageUrls::get_monthly_archive_urls() To retrieve monthly archive URLs for the post.
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* @uses Util_PageUrls::get_yearly_archive_urls() To retrieve yearly archive URLs for the post.
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* @uses Util_PageUrls::get_feed_urls() To retrieve global feed URLs.
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* @uses Util_PageUrls::get_feed_comments_urls() To retrieve comment feed URLs for the post.
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* @uses Util_PageUrls::get_feed_author_urls() To retrieve feed URLs related to the post's author.
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* @uses Util_PageUrls::get_feed_terms_urls() To retrieve feed URLs for terms associated with the post.
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* @uses Util_PageUrls::get_pages_urls() To retrieve URLs of custom purge pages.
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* @uses Util_PageUrls::complement_with_mirror_urls() To add mirror URLs to the purge list.
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* @uses apply_filters() To allow customization of the queued URLs through the 'varnish_flush_post_queued_urls' filter.
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*/
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public function flush_post( $post_id, $force ) {
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if ( ! $post_id ) {
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$post_id = Util_Environment::detect_post_id();
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}
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if ( $post_id ) {
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$full_urls = array();
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$post = null;
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$terms = array();
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$feeds = $this->_config->get_array( 'pgcache.purge.feed.types' );
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$limit_post_pages = $this->_config->get_integer( 'pgcache.purge.postpages_limit' );
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if ( $this->_config->get_boolean( 'pgcache.purge.terms' ) || $this->_config->get_boolean( 'varnish.pgcache.feed.terms' ) ) {
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$taxonomies = get_post_taxonomies( $post_id );
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$terms = wp_get_post_terms( $post_id, $taxonomies );
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}
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switch ( true ) {
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case $this->_config->get_boolean( 'pgcache.purge.author' ):
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case $this->_config->get_boolean( 'pgcache.purge.archive.daily' ):
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case $this->_config->get_boolean( 'pgcache.purge.archive.monthly' ):
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case $this->_config->get_boolean( 'pgcache.purge.archive.yearly' ):
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case $this->_config->get_boolean( 'pgcache.purge.feed.author' ):
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$post = get_post( $post_id );
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}
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$front_page = get_option( 'show_on_front' );
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/**
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* Home (Frontpage) URL
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*/
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if (
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( $this->_config->get_boolean( 'pgcache.purge.home' ) && 'posts' === $front_page ) ||
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$this->_config->get_boolean( 'pgcache.purge.front_page' )
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) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_frontpage_urls( $limit_post_pages ) );
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}
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/**
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* Home (Post page) URL
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.home' ) && 'posts' !== $front_page ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_postpage_urls( $limit_post_pages ) );
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}
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/**
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* Post URL
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.post' ) || $force ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_urls( $post_id ) );
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}
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/**
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* Post comments URLs
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.comments' ) && function_exists( 'get_comments_pagenum_link' ) ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_comments_urls( $post_id ) );
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}
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/**
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* Post author URLs
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.author' ) && $post ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_author_urls( $post->post_author, $limit_post_pages ) );
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}
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/**
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* Post terms URLs
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.terms' ) ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_post_terms_urls( $terms, $limit_post_pages ) );
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}
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/**
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* Daily archive URLs
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.archive.daily' ) && $post ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_daily_archive_urls( $post, $limit_post_pages ) );
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}
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/**
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* Monthly archive URLs
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*/
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if ( $this->_config->get_boolean( 'pgcache.purge.archive.monthly' ) && $post ) {
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$full_urls = array_merge( $full_urls, Util_PageUrls::get_monthly_archive_urls( $post, $limit_post_pages ) );
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}
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/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* Flushes a specific URL from the cache.
|
|
*
|
|
* This method purges the cache for a single URL using the internal `_purge` method.
|
|
*
|
|
* @param string $url The URL to be purged.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function flush_url( $url ) {
|
|
$this->_purge( $url );
|
|
}
|
|
|
|
/**
|
|
* Cleans up the queued URLs and performs the flush operation if requested.
|
|
*
|
|
* If a flush operation is explicitly requested, it executes the `do_flush` method, clears the queue, and resets the flush request
|
|
* flag. Otherwise, it processes all queued URLs individually using `flush_url` and clears the queue afterward.
|
|
*
|
|
* @return int The count of URLs flushed. Returns 999 if a bulk flush operation was requested, or the number of individual URLs
|
|
* processed otherwise.
|
|
*/
|
|
public 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;
|
|
}
|
|
}
|