Thanks for the example. I had seen your example earlier and had tried
it and always get to one particular point where I cannot seem to get
beyond. There are two hidden fields both called web.fixed_values that
appear to be something like a view state but the page is shtml. I am
and have been able to pull down the site, etc. but everytime I try and
post my data (with or without the web.fixed_values) I always get the
response Method Not Allowed. Below is the code I am using along with
the sire I am trying to access with my account. ANy further help on
this would be greatly appreciated.
private void Page_Load(object sender, System.EventArgs e)
{
string LOGIN_URL = "
http://augustachronicle.com/login.shtml";
string cookieAge = "31536000";
try
{
HttpWebRequest webRequest = WebRequest.Create(LOGIN_URL) as
HttpWebRequest;
StreamReader responseReader = new
StreamReader(webRequest.GetResponse().GetResponseStream());
string responseData = responseReader.ReadToEnd();
responseReader.Close();
// get the web fixed values
string fixedvalue1 = ExtractFixedValues1(responseData);
string fixedvalue2 = ExtractFixedValues2(responseData);
string postData = String.Format("web.fixed_values={0}&web.fixed_values={1}&ACTION=Login&USER={2}&PASS={3}&cookie_age={4}",fixedvalue1,fixedvalue2,userName,
password, cookieAge);
// have a cookie container ready to receive the forms auth cookie
CookieContainer cookies = new CookieContainer();
// now post to the login form
webRequest = WebRequest.Create(LOGIN_URL) as HttpWebRequest;
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.CookieContainer = cookies;
// write the form values into the request message
StreamWriter requestWriter = new
StreamWriter(webRequest.GetRequestStream());
requestWriter.Write(postData);
requestWriter.Close();
// we don't need the contents of the response, just the cookie it
issues
webRequest.GetResponse().Close();
// now we can send out cookie along with a request for the protected
page
webRequest = WebRequest.Create("
http://augustachronicle.com/stories/112404/usc_FBC--SpurrierProfile.shtml")
as HttpWebRequest;
webRequest.CookieContainer = cookies;
responseReader = new
StreamReader(webRequest.GetResponse().GetResponseStream());
// and read the response
responseData = responseReader.ReadToEnd();
responseReader.Close();
Response.Write(responseData);
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}
private string ExtractFixedValues1(string s)
{
string viewStateNameDelimiter = "web.fixed_values";
string valueDelimiter = "value=\"";
int viewStateNamePosition = s.IndexOf(viewStateNameDelimiter);
int viewStateValuePosition = s.IndexOf(
valueDelimiter, viewStateNamePosition
);
int viewStateStartPosition = viewStateValuePosition +
valueDelimiter.Length;
int viewStateEndPosition = s.IndexOf("\"", viewStateStartPosition);
return HttpUtility.UrlEncodeUnicode(
s.Substring(viewStateStartPosition,
viewStateEndPosition - viewStateStartPosition
)
);
}
private string ExtractFixedValues2(string s)
{
string viewStateNameDelimiter = "web.fixed_values";
string valueDelimiter = "value=\"";
int viewStateNamePosition = s.IndexOf(viewStateNameDelimiter);
int viewStateValuePosition = s.IndexOf(valueDelimiter,
viewStateNamePosition
);
int viewStateStartPosition = viewStateValuePosition +
valueDelimiter.Length;
int viewStateEndPosition = s.IndexOf("\"", viewStateStartPosition);
string sTemp = s.Remove(0,viewStateEndPosition);
viewStateNamePosition = sTemp.IndexOf(viewStateNameDelimiter);
viewStateValuePosition = sTemp.IndexOf(
valueDelimiter, viewStateNamePosition
);
viewStateStartPosition = viewStateValuePosition +
valueDelimiter.Length;
viewStateEndPosition = sTemp.IndexOf("\"", viewStateStartPosition);
return HttpUtility.UrlEncodeUnicode(
sTemp.Substring(
viewStateStartPosition,
viewStateEndPosition - viewStateStartPosition
)
);
}
