WeChat public platform development certification "Become a developer". Net code parsing, developer. net

Public platform development certification "Become a developer". Net code parsing, developer. net

. Net is used to authenticate public service platform development and become a developer. The specific content is as follows:

These codes are used once for authentication and will not be used in the future:

const string Token = "XXXXX"; // your token
protected void Page_Load (object sender, EventArgs e)
{
  string postStr = "";
  if (Request.HttpMethod.ToLower () == "post")
  {
    System.IO.Stream s = System.Web.HttpContext.Current.Request.InputStream;
    byte [] b = new byte [s.Length];
    s.Read (b, 0, (int) s.Length);
    postStr = System.Text.Encoding.UTF8.GetString (b);
    if (! string.IsNullOrEmpty (postStr))
    {
      // ResponseMsg (postStr);
      Response.Write (ResponseMsg (postStr));
      Response.End ();
    }
   // WriteLog ("postStr:" + postStr);
  }
  else
  {
    Valid ();
  }
}
 
/// <summary>
/// verify signature
/// </ summary>
/// * Sort the three parameters of token, timestamp, and nonce lexicographically
/// * Splice three parameter strings into one string for sha1 encryption
/// * The encrypted string obtained by the developer can be compared with the signature to identify the source of the request.
/// <returns> </ returns>
private bool CheckSignature ()
{
  string signature = Request.QueryString ["signature"]. ToString ();
  string timestamp = Request.QueryString ["timestamp"]. ToString ();
  string nonce = Request.QueryString ["nonce"]. ToString ();
  string [] ArrTmp = {Token, timestamp, nonce};
  Array.Sort (ArrTmp); // Sort by dictionary
  string tmpStr = string.Join ("", ArrTmp);
  tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile (tmpStr, "SHA1");
  tmpStr = tmpStr.ToLower ();
  if (tmpStr == signature)
  {
    return true;
  }
  else
  {
    return false;
  }
}
.private void Valid ()
{
  string echoStr = Request.QueryString ["echoStr"]. ToString ();
  if (CheckSignature ())
  {
    if (! string.IsNullOrEmpty (echoStr))
    {
      Response.Write (echoStr);
      Response.End ();
    }
  }
}
 
/// <summary>
/// write log (for tracking)
/// </ summary>
private void WriteLog (string strMemo)
{
  string filename = Server.MapPath ("/ logs / log.txt");
  if (! Directory.Exists (Server.MapPath ("// logs //")))
    Directory.CreateDirectory ("// logs //");
  StreamWriter sr = null;
  try
  {
    if (! File.Exists (filename))
    {
      sr = File.CreateText (filename);
    }
    else
    {
      sr = File.AppendText (filename);
    }
    sr.WriteLine (strMemo);
  }
  catch
  {
 
  }
  finally
  {
    if (sr! = null)
      sr.Close ();
  }
} 

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