224 lines
7.3 KiB
Plaintext
224 lines
7.3 KiB
Plaintext
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<?php
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defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
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class SWCFPC_Varnish
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{
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private $main_instance = null;
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private $objects = false;
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private $hostname = 'localhost';
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private $port = 6081;
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private $single_purge_method = 'PURGE';
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private $whole_purge_method = 'PURGE';
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private $provider = '';
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function __construct( $main_instance )
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{
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$this->main_instance = $main_instance;
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$this->hostname = $this->main_instance->get_single_config('cf_varnish_hostname', 'localhost');
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$this->port = $this->main_instance->get_single_config('cf_varnish_port', 6081);
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$this->single_purge_method = $this->main_instance->get_single_config('cf_varnish_purge_method', 'PURGE');
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$this->whole_purge_method = $this->main_instance->get_single_config('cf_varnish_purge_all_method', 'PURGE');
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if( $this->main_instance->get_single_config('cf_varnish_cw', 0) > 0 )
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$this->provider = 'cloudways';
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$this->actions();
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}
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function actions() {
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// Ajax clear whole fallback cache
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add_action( 'wp_ajax_swcfpc_purge_varnish_cache', array($this, 'ajax_purge_whole_varnish_cache') );
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}
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function purge_urls( $urls ) {
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$error = '';
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if( is_array($urls) && count($urls) > 0 ) {
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foreach($urls as $single_url)
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$this->purge_single_url_cache( $single_url, $error );
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}
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}
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function purge_single_url_cache( $url, &$error, $purge_all=false ) {
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$this->objects = $this->main_instance->get_objects();
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if( $this->hostname == null || $this->port == null ) {
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Invalid hostname or port' );
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$error = __('Invalid hostname or port', 'wp-cloudflare-page-cache');
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return false;
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}
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// Varnish purge request on Cloudways
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if( $this->provider == 'cloudways' ) {
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$this->single_purge_method = 'URLPURGE';
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$this->whole_purge_method = 'PURGE';
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}
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$parseUrl = $purge_all ? parse_url( site_url() ) : parse_url($url);
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// Determine the schema
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$schema = 'http://';
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if (isset($parseUrl['scheme'])) {
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$schema = "{$parseUrl['scheme']}://";
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}
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if ($purge_all) {
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if( $this->provider == 'cloudways' ) {
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$finalURL = sprintf('%s%s%s', $schema, $this->hostname, '/.*');
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}
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else {
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$finalURL = sprintf('%s%s:%d%s', $schema, $this->hostname, $this->port, '/*');
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}
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} else {
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// Determine the path
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$path = '';
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if (isset($parseUrl['path'])) {
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$path = $parseUrl['path'];
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}
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if( $this->provider == 'cloudways' ) {
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$finalURL = sprintf('%s%s%s', $schema, $this->hostname, $path);
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}
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else {
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$finalURL = sprintf('%s%s:%d%s', $schema, $this->hostname, $this->port, $path);
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}
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if (!empty($parseUrl['query'])) {
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$finalURL .= "?{$parseUrl['query']}";
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}
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}
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$request_args = array(
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'method' => $purge_all ? $this->whole_purge_method : $this->single_purge_method,
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'headers' => array(
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'Host' => $parseUrl['host'],
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'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36',
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),
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'sslverify' => false,
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);
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', "Send purging request to {$finalURL}");
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if( $this->objects['logs']->get_verbosity() == SWCFPC_LOGS_HIGH_VERBOSITY )
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Request args '.print_r($request_args, true));
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// Send purge request to Varnish
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$response = wp_remote_request($finalURL, $request_args);
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if( $this->objects['logs']->get_verbosity() == SWCFPC_LOGS_HIGH_VERBOSITY )
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Response: '.print_r($response, true));
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if ( is_wp_error($response) || $response['response']['code'] != '200' ) {
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if ($schema === 'https://') {
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$schema = 'http://';
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} else {
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$schema = 'https://';
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}
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if( is_wp_error($response) )
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Error: ' . $response->get_error_message() . " - Retry using {$schema}");
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else
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', "Response code {$response['response']['code']} - Retry using {$schema}");
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if ($purge_all) {
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if( $this->provider == 'cloudways' ) {
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$finalURL = sprintf('%s%s%s', $schema, $this->hostname, '/.*');
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}
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else {
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$finalURL = sprintf('%s%s:%d%s', $schema, $this->hostname, $this->port, '/*');
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}
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} else {
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if( $this->provider == 'cloudways' ) {
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$finalURL = sprintf('%s%s%s', $schema, $this->hostname, $path);
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}
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else {
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$finalURL = sprintf('%s%s:%d%s', $schema, $this->hostname, $this->port, $path);
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}
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if (!empty($parseUrl['query'])) {
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$finalURL .= "?{$parseUrl['query']}";
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}
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}
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', "Send purging request to {$finalURL}");
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if( $this->objects['logs']->get_verbosity() == SWCFPC_LOGS_HIGH_VERBOSITY )
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Request args '.print_r($request_args, true));
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// Send new purge request to Varnish
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$response = wp_remote_request($finalURL, $request_args);
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if( $this->objects['logs']->get_verbosity() == SWCFPC_LOGS_HIGH_VERBOSITY )
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', 'Response: '.print_r($response, true));
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if (is_wp_error($response)) {
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$error = $response->get_error_message();
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return false;
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}
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}
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$this->objects['logs']->add_log('varnish::purge_single_url_cache', "Cache purged for URL {$url}" );
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return true;
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}
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function purge_whole_cache( &$error ) {
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$error = '';
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return $this->purge_single_url_cache( '', $error, true );
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}
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function ajax_purge_whole_varnish_cache() {
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check_ajax_referer( 'ajax-nonce-string', 'security' );
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$return_array = array('status' => 'ok');
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$error = '';
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if( ! $this->purge_whole_cache( $error) ) {
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$return_array['status'] = 'error';
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$return_array['error'] = $error;
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die(json_encode($return_array));
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}
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$this->objects['logs']->add_log('varnish::ajax_purge_whole_varnish_cache', 'Purge whole Varnish cache' );
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$return_array['success_msg'] = __('Varnish cache purged successfully!', 'wp-cloudflare-page-cache');
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die(json_encode($return_array));
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}
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}
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