[RESOLVED] HTTP Webrequest post (Login to YAhooMail)

[earth_toph0601]

I finally logged in to yahoomail using httpwebrequest.
my problem now is how I am going to put a messagebox saying my log in is successful or not.
for now im trying to login using a correct username and pass.

Hope someone can help me about it.

Here's my code so far.

Imports System.IO
Imports System.Net
Imports System.Text

Public Class Form1

    Dim loginCoockie As New CookieContainer

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim uName As String = TextBox1.Text
        Dim pWord As String = TextBox2.Text

        Label1.Text = "Trying to Log In"

        Dim postData As String = ".tries=1&.src=ym&.md5=&.hash=&.js=&.last=&promo=&.intl=us&.bypass=&.partner=&.u=7jebrpt78q79h&.v=0&.challenge=a5PSc8KUgQ7.sU0VVUE9JsdHOosB&.yplus=&.emailCode=&pkg=&stepid=&.ev=&hasMsgr=0&.chkP=Y&.done=http%3A%2F%2Fmail.yahoo.com&.pd=ym_ver%3D0%26c%3D%26ivt%3D%26sg%3D&.ws=1&.cp=0&pad=5&aad=6&login=" & uName & "&passwd=" & pWord & "&.save=&passwd_raw="
        Dim tempCookies As New CookieContainer
        Dim encoding As New UTF8Encoding
        Dim byteData As Byte() = encoding.GetBytes(postData)


        Dim postRequest As HttpWebRequest = DirectCast(WebRequest.Create("https://login.yahoo.com/config/login"), HttpWebRequest)
        postRequest.Method = "POST"
        postRequest.KeepAlive = True
        postRequest.CookieContainer = tempCookies
        postRequest.ContentType = "application/x-www-form-urlencoded"
        postRequest.Referer = "https://login.yahoo.com/config/login"
        postRequest.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0a2) Gecko/20110613 Firefox/6.0a2"
        postRequest.ContentLength = byteData.Length


        Dim postReqStream As Stream = postRequest.GetRequestStream
        postReqStream.Write(byteData, 0, byteData.Length)
        postReqStream.Close()

        Dim postResponse As HttpWebResponse

        postResponse = DirectCast(postRequest.GetResponse(), HttpWebResponse)
        tempCookies.Add(postResponse.Cookies)
        loginCoockie = tempCookies

        Dim postReqReader As New StreamReader(postResponse.GetResponseStream())

 End Sub

Thanks.

[gep13]

Hello,

In order to know if it was successful to need to inspect the response that you are getting back from the server. This may involve simply looking at the Response Code, or you may need to inspect the actual HTML of the response and look for a certain string to indicate that it was successful.

Gary

[aronquiray]

Add this code after

Dim thepage As String = postreqreader.ReadToEnd
        If thepage.Contains("Please try again using your full Yahoo! ID.") = True Then '
            MsgBox("Incorrect Username/password combination", 0, "Login error!")
        Else
            MsgBox("Logged in", 0, "Success!")
        End If

 Dim postReqReader As New StreamReader(postResponse.GetResponseStream())

[aronquiray]

sorry for my first post. change the

Please try again using your full Yahoo! ID.

to

"status" : "error"

i just tested it.

[earth_toph0601]

Im trying to use Regex but i dont know how to implement it in codes.

Here's my source code.

[earth_toph0601]

sorry for my first post. change the

Please try again using your full Yahoo! ID.

to

"status" : "error"

i just tested it.

You Mean This?

Dim postReqReader As New StreamReader(postResponse.GetResponseStream())

Dim thepage As String = postreqreader.ReadToEnd
If thepage.Contains("status : error") = True Then
MsgBox("Incorrect Username/password combination", 0, "Login error!")
Else
MsgBox("Logged in", 0, "Success!")
End If

Sorry I am really new to this...

[earth_toph0601]

@aronquiray

I get it and Its working...

Thank you very much!!!

[gep13]

On the note of using Regex, if you are trying to parse the returned HTML, you might want to think about using the HtmlAgilityPack:

http://htmlagilitypack.codeplex.com/

Which does some of the "heavy lifting" for you.

Gary