<%@ WebHandler Language="C#" Class="Validate" %>

using System;
using System.Web;
using System.Web.SessionState;
using System.Data;
using System.Text;
using System.Text.RegularExpressions;
using DSWebComponent;
using DSWebMobileService.Common;

public class Validate : IHttpHandler, System.Web.SessionState.IRequiresSessionState 
{
    static string userName = "";
    public void ProcessRequest (HttpContext context) {
        string action = context.Request.QueryString["action"].ToString();

        switch (action) 
        {
            case "0":
                SetSign(context);
                break;
            case "1":
                CheckSign(context);
                break; 
        }
    }

    private void SetSign(HttpContext context) 
    {
        string relUserName = "";
        string relPassword = "";
        string relYear = "";
        string relMonth = "";
        string relDay = "";
        string relHours = "";
        string pattern = "\0";
        string replacement = "";

        string u = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["u"].ToString());
        string w = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["w"].ToString());
        string y = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["y"].ToString());
        string m = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["m"].ToString());
        string d = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["d"].ToString());
        string h = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["h"].ToString());

        Regex rgx = new Regex(pattern);
        relUserName = rgx.Replace(u, replacement);
        relPassword = rgx.Replace(w, replacement);
        relYear = rgx.Replace(y, replacement);
        relMonth = rgx.Replace(m, replacement);
        relDay = rgx.Replace(d, replacement);
        relHours = rgx.Replace(h, replacement);
        pattern = "\t";
        Regex rgx2 = new Regex(pattern);
        relUserName = rgx2.Replace(relUserName, replacement);
        relPassword = rgx2.Replace(relPassword, replacement);
        relYear = rgx2.Replace(relYear, replacement);
        relMonth = rgx2.Replace(relMonth, replacement);
        relDay = rgx2.Replace(relDay, replacement);
        relHours = rgx2.Replace(relHours, replacement);

        SessionUtil.Session["SHOWNAME"] = relUserName;
        SessionUtil.Session["Password"] = relPassword;
        SessionUtil.Session["Year"] = relYear;
        SessionUtil.Session["Month"] = relMonth;
        SessionUtil.Session["Day"] = relDay;
        SessionUtil.Session["Hours"] = relHours;

        //userName = relUserName;
    }

    private void CheckSign(HttpContext context) 
    {
        string relUserName = "";
        string relPassword = "";
        string pattern = "\0";
        string replacement = "";
        string u = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["u"].ToString());
        string w = Encrypt.DesDecrypt("#7c&e@63", context.Request.QueryString["w"].ToString());
        //string u= context.Request.QueryString["u"].ToString();
        //string w= context.Request.QueryString["w"].ToString();
        string UserName = SessionUtil.Session["SHOWNAME"].ToString();
        string Password = SessionUtil.Session["Password"].ToString();
        string Year = SessionUtil.Session["Year"].ToString();
        string Month = SessionUtil.Session["Month"].ToString();
        string Day = SessionUtil.Session["Day"].ToString();
        string Hours = SessionUtil.Session["Hours"].ToString();

        Regex rgx = new Regex(pattern);
        relUserName = rgx.Replace(u, replacement);
        relPassword = rgx.Replace(w, replacement);
        pattern = "\t";
        Regex rgx2 = new Regex(pattern);
        relUserName = rgx2.Replace(relUserName, replacement);
        relPassword = rgx2.Replace(relPassword, replacement);

        StringBuilder sb = new StringBuilder();
        if (UserName != "" && Password != "" && Year != "" && Month != "" && Day != "" && Hours != "" && UserName != null && Password != null && Year != null && Month != null && Day != null && Hours != null && relUserName == UserName && relPassword == Password && Year == DateTime.Now.Year.ToString() && Month == DateTime.Now.Month.ToString() && Day == DateTime.Now.Day.ToString() && Hours == DateTime.Now.Hour.ToString())
        {
            SessionUtil.Session["Hours"] = DateTime.Now.Hour.ToString();
            sb.Append("[{\"result\":\"success\"}]");
        }
        else 
        { 
            sb.Append("[{\"result\":\"fail\"}]");
        }
        context.Response.ContentType = "text/plain";
        context.Response.Write(sb.ToString());
        context.Response.End();
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}