劫持处理

<!-- 反劫持 S -->
    <script>
        (function () {
            //设置cookie
            function setCookie(name, value, domain, path, expires) {
                if(expires){
                    expires = new Date(+new Date() + expires);
                }
                var tempcookie = name + '=' + escape(value) +
                        ((expires) ? '; expires=' + expires.toGMTString() : '') +
                        ((path) ? '; path=' + path : '') +
                        ((domain) ? '; domain=' + domain : '');

                //Ensure the cookie's size is under the limitation
                if(tempcookie.length < 4096) {
                    document.cookie = tempcookie;
                }
            }

            //获取cookie
            function getCookie(name) {
                var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");

                if (arr = document.cookie.match(reg))

                    return (arr[2]);
                else
                    return null;
            }

            //创建并发送请求
            function createSender(url){
                var img = new Image();
                img.onload = img.onerror = function(){
                    img = null;
                };
                img.src = url;
            }

            /*
             *防劫持逻辑所需参数在此处设置参数即可
             *cookieName:用于记录连续被劫持的次数，为防止死循环，cookie值为3以上则不进行url重置
             *cookieDomain:cookie所在的域
             *reportUrl:非连续性劫持时上报的接口地址【如无需上报，可不填】
             *reportUrl2：连续性劫持时上报的接口地址【如无需上报，可不填】
             */
            var cookieName = 'hiijack';
            var cookieDomain = '.readnovel.com';
            var reportUrl = '<%= staticConf.domains.hiijack %>/ajax/safe/hiijackReport?times=1&_csrfToken='+ getCookie('_csrfToken')||'';
            var reportUrl2 = '<%= staticConf.domains.hiijack %>/ajax/safe/hiijackReport?times=3&_csrfToken='+ getCookie('_csrfToken')||'';

            //判断是否被iframe
            if (top.location !== self.location) {
                //用于记录被劫持的次数
                var countHijack;

                //如果未设置cookie，则需要set一下cookie，否则获取此cookie的值
                if(!getCookie(cookieName)){
                    setCookie(cookieName,0 ,cookieDomain, '', 30*24*60*60*1000);
                    countHijack = 0;
                }else{
                    countHijack = parseInt(getCookie(cookieName));
                }

                //如果连续被劫持的次数大于等于3次，则发请求上报此情况,否则上报非连续性的情况,同时累加被劫持次数、重置当前url
                if(countHijack >= 3){
                    reportUrl2 && reportUrl2!='' && createSender(reportUrl2);
                }else{
                    reportUrl && reportUrl!=''&& createSender(reportUrl);
                    countHijack ++;
                    setCookie(cookieName, countHijack ,cookieDomain, '', 30*24*60*60*1000);
                    top.location = self.location;
                }
            }
            //每次成功进入页面则计数清0
            setCookie(cookieName, 0 ,cookieDomain, '', 30*24*60*60*1000);
        })();
    </script>
    <!-- 反劫持 E -->