fix

wp-content/plugins/wp-fastest-cache/inc/varnish.php

@@ -0,0 +1,178 @@
+<?php
+	class VarnishWPFC{
+
+		public static function purge_cache($data = false) {
+			if(isset($GLOBALS["wpfc_varnish_purge_cache_executed"])){
+				return;
+			}else{
+				$GLOBALS["wpfc_varnish_purge_cache_executed"] = true;
+			}
+
+			
+
+			if(gettype($data) == "array"){
+				// Clearing page cache action sends the data as Array
+				if(isset($data["status"]) && $data["status"] == "pause"){
+					return array("success" => true);
+				}
+
+				$server = $data["server"];
+			}else{
+				// Ajax request and save() function send the data as string
+				$server = $data;
+			}
+
+			$home = get_option('home');
+			$host = preg_replace("/(https?\:\/\/)(.+)/", "$2", $home);
+			$host = preg_replace("/\/.*/", "", $host);
+
+			$schema = preg_replace("/(https?\:\/\/).+/", "$1", $home);
+			$schema = strtolower($schema);
+
+			$ssl_verification = $schema == 'https://' ? true : false;
+
+			$request_url = $schema.$server."/.*";
+
+			$request_args = array(
+				'method'    => "PURGE",
+				'headers'   => array(
+					'Host'       => $host,
+					'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',
+				),
+				'sslverify' => $ssl_verification,
+			);
+
+
+			$response = wp_remote_request($request_url, $request_args );
+
+
+			if(is_wp_error( $response ) || $response['response']['code'] != '200'){
+
+				if($schema === 'https://'){
+					$request_url = str_replace("https://", "http://", $request_url);
+				}else{
+					$request_url = str_replace("http://", "https://", $request_url);
+				}
+
+
+				$response = wp_remote_request($request_url, $request_args );
+
+
+				if(is_wp_error( $response ) || $response['response']['code'] != '200'){
+
+					if($response->get_error_messages()){
+						return array("success" => "", "message" => $response->get_error_message());
+
+					}
+
+					if($response['response']['code'] == "501"){
+						$text = '"Purge" method is not allowed';
+
+						if(isset($response['headers']['allow'])){
+							$text = $text.". The allowed methods are ".$response['headers']['allow'];
+							$text = $text.". Please contact your hosting provider";
+						}
+
+						return array("success" => "", "message" => $text);
+					}
+					
+
+				}
+			}
+
+			return array("success" => true);
+		}
+
+		public static function save(){
+			if(!wp_verify_nonce($_POST["security"], 'wpfc-varnish-ajax-nonce')){
+				die( 'Security check' );
+			}
+
+			$_POST["server"] = sanitize_text_field($_POST["server"]);
+
+			$purce_res = self::purge_cache($_POST["server"]);
+
+			if(!$purce_res["success"]){
+				wp_send_json($purce_res);
+			}
+
+			$datas = get_option("WpFastestCacheVarnish");
+
+			if(!is_array($datas)){
+				$datas = array();
+				$datas["server"] = $_POST["server"];
+
+				add_option("WpFastestCacheVarnish", $datas, 1, "yes");
+			}else{
+				$datas["server"] = $_POST["server"];
+
+				update_option("WpFastestCacheVarnish", $datas, 1, "yes");
+			}
+
+			wp_send_json_success();
+
+
+		}
+
+		public static function status(){
+			$datas = get_option("WpFastestCacheVarnish");
+
+			if(is_array($datas)){
+				if(isset($datas["status"]) && $datas["status"] == "pause"){
+					echo "isConnected pause";
+				}else{
+					echo "isConnected";
+				}
+			}
+		}
+
+		public static function start(){
+			if(!wp_verify_nonce($_POST["security"], 'wpfc-varnish-ajax-nonce')){
+				die( 'Security check' );
+			}
+
+			$datas = get_option("WpFastestCacheVarnish");
+
+			if(is_array($datas)){
+				unset($datas["status"]);
+
+				$purce_res = self::purge_cache($datas);
+
+				if(!$purce_res["success"]){
+					wp_send_json($purce_res);
+				}
+
+				update_option("WpFastestCacheVarnish", $datas, 1, "yes");
+			}
+
+			wp_send_json_success();
+		}
+
+		public static function pause(){
+			if(!wp_verify_nonce($_POST["security"], 'wpfc-varnish-ajax-nonce')){
+				die( 'Security check' );
+			}
+
+			$datas = get_option("WpFastestCacheVarnish");
+
+			if(is_array($datas)){
+				$datas["status"] = "pause";
+				update_option("WpFastestCacheVarnish", $datas, 1, "yes");
+			}
+
+			wp_send_json_success();
+		}
+
+		public static function remove(){
+			if(!wp_verify_nonce($_POST["security"], 'wpfc-varnish-ajax-nonce')){
+				die( 'Security check' );
+			}
+
+			delete_option("WpFastestCacheVarnish");
+
+			wp_send_json_success();
+		}
+
+	}
+
+?>