public bool doHandshake(
Uri uri,
String username,
String password
)
{
// initiate the handshake by GET on SSO url
Uri activeUri = uri;
if (String.IsNullOrWhiteSpace(username) || String.IsNullOrWhiteSpace(username))
{
performGet(activeUri, true); // Try to get an authentication cookie using network credentials
}
String response = performGet(activeUri, false).body;
//Fix = what if null or no data?
do
{
if (response == null)
{
Trace.TraceError("No response returned during SSO handshake. There should have been one.");
break;
}
// look for a form that will provide the next URL in the handshake sequence, which will also provide fields (such
// as the SAML request from the SP and the SAML response from the IdP) that need to be forwarded on to the next URL
FormInfo formInfo = getFirstFormInfo(response);
if (formInfo == null)
{
Trace.TraceError("No form detected during SSO handshake. There should have been one.\r\n\r\n{0}", response);
break; // no form detected, so this is the end of the handshake
}
// determine the form fields to post to the next URL; special handling takes place in the case of the password
// form where we step in and provide the user's name / password to the SP
List <PostParam> postParams;
if (formInfo.isPasswordForm())
{
postParams = formInfo.getPasswordPostParams(username, password);
}
else if (formInfo.isSamlForm())
{
postParams = formInfo.getSamlPostParams();
}
else
{
Trace.TraceError("Unknown form encountered during handshake");
break;
}
// invoke the next step in the handshake
activeUri = formInfo.getAbsoluteUri(activeUri);
PostResults postResults = performPost(activeUri, postParams);
if (postResults.statusCode != HttpStatusCode.OK)
{
Trace.TraceError("Unexpected status code from POST: " + postResults.statusCode.ToString());
break;
}
response = postResults.body;
} while ((jsessionidCookie = getJsessionidCookie()) == null);
return(jsessionidCookie != null);
}