using System;
using System.Web;
using System.Collections.Generic;namespace WintonAuthorization
{
    /// <summary>
    /// HttpModule授权类
    /// </summary>
    public class AuthModule :IHttpModule
    {
        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="application"></param>
        public void Init(HttpApplication application)
        {
            application.BeginRequest += (new EventHandler(this.Application_BeginRequest));
            //application.EndRequest += (new EventHandler(this.Application_EndRequest));
        }/// <summary>
        /// 文件请求开始判断
        /// </summary>
        /// <param name="source"></param>
        /// <param name="e"></param>
        private void Application_BeginRequest(Object source, EventArgs e)
        {
            HttpApplication application = (HttpApplication)source;
            HttpRequest reqest = application.Context.Request;//url请求
            string fileName = string.Empty;
            string urlStr = reqest.Url.AbsolutePath;
            if (!string.IsNullOrEmpty(urlStr))
            {
                string[] urlArray = urlStr.Split('/');
                fileName = urlArray[urlArray.Length - 1].ToUpper().Replace(".ASPX","");
            }//大等于8位的才符合條件
            if (!string.IsNullOrEmpty(fileName) && fileName.Length >= 8)
            {
                 //取前8位
                 fileName = fileName.Substring(0, 8);//是否是符合要求的程式
                 bool isOKProgram = false;//符合：前3位等于'WEB',第4位為字母,后4位為數字的才需要判斷
                 if ("WEB" == fileName.Substring(0, 3))
                 {
                     if (char.IsLetter(fileName[3]))
                     {
                         if (char.IsDigit(fileName[4]) && char.IsDigit(fileName[5]) && char.IsDigit(fileName[6]) && char.IsDigit(fileName[7]))
                         {
                             isOKProgram = true;
                         }
                     }
                 }if (isOKProgram)
                 {
                     //是否存在文件
                     List<string> programList = application.Context.Application["ProgramList"] as List<string>;
                     if (null != programList && 0 < programList.Count && programList.Contains(fileName))
                     {
                     }
                     else
                     {
                         HttpResponse Response = application.Context.Response;
                         Response.Write("<script >alert('該程式沒有授權！');history.back();</script>");
                     }
                 }
            }
        }/// <summary>
        /// 請求結束
        /// </summary>
        /// <param name="source"></param>
        /// <param name="e"></param>
        private void Application_EndRequest(Object source, EventArgs e)
        {
        }/// <summary>
        /// 釋放
        /// </summary>
        public void Dispose()
        {
        }   
    }
}

using System;
using System.Collections.Generic;
using System.Web;namespace WintonAuthorization
{
    /// <summary>
    /// 重現實現IHttpHandler
    /// </summary>
    public class AuthHandler:IHttpHandler
    {
        #region IHttpHandler Memberspublic bool IsReusable
        {
            get { return false; }
        }public void ProcessRequest(HttpContext context)
        {
            HttpRequest reqest = context.Request;//url请求
            string fileName = string.Empty;
            string urlStr = reqest.Url.AbsolutePath;
            if (!string.IsNullOrEmpty(urlStr))
            {
                string[] urlArray = urlStr.Split('/');
                fileName = urlArray[urlArray.Length - 1].ToUpper().Replace(".ASPX", "");
                //取前8位
                if (fileName.Length >= 8)
                {
                    fileName = fileName.Substring(0, 8);
                }
            }//是否存在文件
            List<string> programList = context.Application["ProgramList"] as List<string>;
            if (!string.IsNullOrEmpty(fileName) && null != programList && 0 < programList.Count && programList.Contains(fileName))
            {
            }
            else
            {
                HttpResponse Response = context.Response;
                Response.Write("<script >alert('該程式沒有授權！');history.back();</script>");
            }
        }#endregion
    }
}