/// <summary>
/// After the user Authorizes the app, Twitter will
/// redirect to the callback url, provided during
/// BeginAuthorization. When redirecting, Twitter will
/// also provide oauth_verifier and oauth_token
/// parameters. This method uses those parameters to
/// request an access token, which is used automatically
/// by LINQ to Twitter when executing queries.
/// </summary>
/// <param name="callback">URL that Twitter redirected to after authorization</param>
/// <returns>True if successful</returns>
public bool CompleteAuthorization(Uri callback)
{
if (callback == null)
{
throw new ArgumentNullException("callback", "You must pass in the callback that Twitter returned after authentication.");
}
if (IsAuthorized)
{
return(true);
}
string verifier = OAuthTwitter.GetUrlParamValue(callback.Query, "oauth_verifier");
if (verifier != null)
{
string oAuthToken = OAuthTwitter.GetUrlParamValue(callback.Query, "oauth_token");
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;
}
return(IsAuthorized);
}
/// <summary>
/// Retrieves access token from Twitter.
/// Call this after calling GetAuthorizationPageLink()
/// </summary>
/// <param name="oAuthToken">Auth Token from call to GetAuthorizationPageLink</param>
public void RetrieveAccessToken(string oAuthToken)
{
if (string.IsNullOrEmpty(oAuthToken))
{
throw new ArgumentException("Invalid OAuth Token.", "oAuthToken");
}
string screenName;
string userID;
OAuthTwitter.AccessTokenGet(oAuthToken, OAuthAccessTokenUrl, out screenName, out userID);
OAuthRequestScreenName = screenName;
OAuthRequestUserID = userID;
}
/// <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;
}