生成带校验权限的访问页面

2017-02-26 20:33:46 访问(1439) 赞(0) 踩(0)


        /// <summary>
        /// 页面加密密钥
        /// </summary>
        protected readonly static string pageSignKey 
            =
            System.Configuration.ConfigurationManager.AppSettings
            ["SlowX.WebSite.BLL.WebSiteBasicBLL.pageSignKey"];

        /// <summary>
        /// 
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public string WebSiteMD5(string text)
        {
            return GetGB2312MD5(text + pageSignKey);
        }


        /// <summary>
        /// 
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public bool WebSiteMD5Check(string text,string sign)
        {
            return GetGB2312MD5(text + pageSignKey) == sign;
        }

 

        /// <summary>
        /// 构建参数
        /// </summary>
        /// <param name="curId"></param>
        /// <returns></returns>
        public string BuildDownLoadParams(long curId)
        {
            StringBuilder theResult = new StringBuilder();

            string dt = DateTime.Now.ToString("yyyyMMddHHmmss");
            string guid = System.Guid.NewGuid().ToString("N");

            theResult.Append("?id=" + curId.ToString());
            theResult.Append("&dt=" + HttpContext.Current.Server.UrlEncode(dt));
            theResult.Append("&guid=" + HttpContext.Current.Server.UrlEncode(guid));

            string str = curId.ToString() + dt + guid + pageSignKey;
            str = GetGB2312MD5(str);


            theResult.Append("&sign=" + str);

            return theResult.ToString();
        }


        /// <summary>
        /// 构建参数
        /// </summary>
        /// <param name="curId"></param>
        /// <param name="dt"></param>
        /// <param name="guid"></param>
        /// <returns></returns>
        public string BuildDownLoadParams(long curId, string dt, string guid)
        {
            StringBuilder theResult = new StringBuilder();
 
            theResult.Append("?id=" + curId.ToString());
            theResult.Append("&dt=" + HttpContext.Current.Server.UrlEncode(dt));
            theResult.Append("&guid=" + HttpContext.Current.Server.UrlEncode(guid));

            string str = curId.ToString() + dt + guid + pageSignKey;
            str = GetGB2312MD5(str);


            theResult.Append("&sign=" + str);

            return theResult.ToString();
        }


        /// <summary>
        /// 校验参数
        /// </summary>
        /// <returns></returns>
        public bool CheckDownLoadParams()
        {
            string curId = HttpContext.Current.Request.QueryString["id"];
            string dt = HttpContext.Current.Request.QueryString["dt"];
            string guid = HttpContext.Current.Request.QueryString["guid"];
            string sign = HttpContext.Current.Request.QueryString["sign"];

            if (curId == null || dt == null || guid == null || sign == null)
                return false;

            curId = HttpContext.Current.Server.UrlDecode(curId);
            dt = HttpContext.Current.Server.UrlDecode(dt);
            guid = HttpContext.Current.Server.UrlDecode(guid);
            sign = HttpContext.Current.Server.UrlDecode(sign);

            string str = curId + dt + guid + pageSignKey;
            str = GetGB2312MD5(str);

            return (sign == str);
        }