/// <summary>
/// First part of the authorization sequence that:
/// 1. Obtains a request token and then
/// 2. Redirects to the Twitter authorization page
/// </summary>
/// <param name="forceLogin">Forces user to login for Sign-In with Twitter scenarios</param>
/// <param name="callback">This is where you want Twitter to redirect to after authorization</param>
public void BeginAuthorization(Uri callback, bool forceLogin)
{
if (IsAuthorized)
{
return;
}
string callbackStr = OAuthTwitter.FilterRequestParameters(callback);
string link = OAuthTwitter.AuthorizationLinkGet(OAuthRequestTokenUrl, OAuthAuthorizeUrl, callbackStr, forceLogin, AuthAccessType);
PerformRedirect(link);
}
/// <summary>
/// Perform authorization
/// </summary>
/// <param name="forceLogin">Force the user to enter their name.</param>
public void Authorize(bool forceLogin)
{
if (IsAuthorized)
{
return;
}
if (GetPin == null)
{
throw new InvalidOperationException("GetPin must have a handler before calling Authorize.");
}
if (GoToTwitterAuthorization == null)
{
throw new InvalidOperationException("GoToTwitterAuthorization must have a handler before calling Authorize.");
}
string link = OAuthTwitter.AuthorizationLinkGet(OAuthRequestTokenUrl, OAuthAuthorizeUrl, "oob", forceLogin, AuthAccessType);
GoToTwitterAuthorization(link);
string verifier = GetPin();
// TODO: Refactor to share similar logic with WebAuthorizer
string oAuthToken =
(from nameValPair in new Uri(link).Query.TrimStart('?').Split('&')
let pair = nameValPair.Split('=')
where pair[0] == "oauth_token"
select pair[1])
.SingleOrDefault();
string screenName;
string userID;
OAuthTwitter.AccessTokenGet(oAuthToken, verifier, OAuthAccessTokenUrl, string.Empty, out screenName, out userID);
ScreenName = screenName;
UserId = userID;
Credentials.OAuthToken = OAuthTwitter.OAuthToken;
Credentials.AccessToken = OAuthTwitter.OAuthTokenSecret;
Credentials.ScreenName = screenName;
Credentials.UserId = userID;
}
/// <summary>
/// Get the link to Twitter's authorization page for this application.
/// </summary>
/// <param name="readOnly">true for read-only, otherwise read/Write</param>
/// <returns>The url with a valid request token, or a null string.</returns>
public string GetAuthorizationPageLink(bool readOnly, bool forceLogin)
{
// TODO: setting readOnly to true doesn't seem to be working; no Twitter API documentation available; check again later - Joe
// TODO: setting forceLogin to true doesn't seem to be working; no Twitter API documentation available; fix for bug in Twitter API pending; check again later - Joe
return(OAuthTwitter.AuthorizationLinkGet(OAuthRequestTokenUrl, OAuthAuthorizeUrl, readOnly, forceLogin));
}
