HTTP Webrequest post Inside HTTP Webrequest post

[earth_toph0601]

Im trying to create a software which can post into yahoogroups.

I've done trying to log in yahoomail but my problem is when I am going to post in yahoogroups, I am turning back in to yahoo log in page.

Here's my code so far:

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

Public Class Form1

Dim loginCoockie As New CookieContainer
Dim thread As System.Threading.Thread
Public Sub PostTopic()

Dim yGroups As String = txtGroup.Text
Dim TopicSubject As String = txtSubject.Text
Dim TopicBody As String = RichTextBox1.Text

Try

Dim postTopic As String = "referer=%2Fgroup%2F" & yGroups & "%2F&messageNum=0&ycb=nu3Ar2AKlrH&send=Send&from=&subject=" & TopicSubject & "&message=" & TopicBody & "&lang=00"
Dim tempCookies As New CookieContainer
Dim encoding As New UTF8Encoding
Dim byteData As Byte() = encoding.GetBytes(postTopic)

Dim postRequest As HttpWebRequest = DirectCast(WebRequest.Create("http://groups.yahoo.com/group/post" & yGroups & "z/post"), HttpWebRequest)
postRequest.Method = "POST"
postRequest.KeepAlive = True
postRequest.CookieContainer = tempCookies
postRequest.ContentType = "application/x-www-form-urlencoded"
postRequest.Referer = "http://groups.yahoo.com/group/post" & yGroups & "/post"
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())

Dim thepage As String = postReqReader.ReadToEnd

RichTextBox1.Text = thepage

Catch ex As Exception

MessageBox.Show(ex.Message)

End Try

End Sub


Public Sub PostThread()

lblStatus.Text = "Trying to login"

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

Try

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&.don e=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())

Dim thepage As String = postReqReader.ReadToEnd

If thepage.Contains(Chr(34) & "status" & Chr(34) & " : " & Chr(34) & "error" & Chr(34)) = True Then
lblStatus.Text = "Login Failed"
Exit Sub

Else

lblStatus.Text = "Login success"


End If

Catch ex As Exception

MessageBox.Show(ex.Message)

End Try


End Sub

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

thread = New System.Threading.Thread(AddressOf PostThread)
thread.Start()

End Sub


Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Control.CheckForIllegalCrossThreadCalls = False
End Sub
End Class

[aronquiray]

In my own opinion, you can strip down all links first once you haved logged in.
you need to have 2 textbox for username and password + 1 button and 1 web browser control

then you can follow this.

                    Dim user1 As HtmlElement = wbTS1.Document.All.Item("username")
                    user1.InnerText = txtTSusername.Text
                    Dim pass1 As HtmlElement = wbTS1.Document.All.Item("passwd")
                    pass1.InnerText = txtTSpass.Text
                    wbTS1.Document.GetElementById(".save").InvokeMember("click") 'i guess its .save for yahoomail?

Dim tempList As New ListBox 'or load it really on a listbox, in my case, i just load it on an imaginary container

                    For Each myLink As HtmlElement In wbTS1.Document.Links
                        tempList.Items.Add(myLink.GetAttribute("HREF").ToString)
                    Next




'after storing it on a container you can see the links where you want to go.
'i'm pretty sure that link is on a static location like for example in my case

WebBrowser1.Navigate(tempList.Items(5).ToString)

'coz I know its really on the 5th location of a container

hope that help you..