/// <summary>
/// Prepares a redirect that will send the user to Flickr to sign in.
/// </summary>
/// <param name="forceNewLogin">if set to <c>true</c> the user will be required to re-enter their Flickr credentials even if already logged in to Flickr.</param>
/// <returns>The redirect message.</returns>
/// <remarks>
/// Call <see cref="OutgoingWebResponse.Send"/> or
/// <c>return StartSignInWithFlickr().<see cref="MessagingUtilities.AsActionResult">AsActionResult()</see></c>
/// to actually perform the redirect.
/// </remarks>
public static OutgoingWebResponse StartSignInWithFlickr()
{
var redirectParameters = new Dictionary <string, string>();
Uri callback = MessagingUtilities.GetRequestUrlFromContext().StripQueryArgumentsWithPrefix("oauth_");
var request = FlickrSignIn.PrepareRequestUserAuthorization(callback, null, redirectParameters);
return(FlickrSignIn.Channel.PrepareResponse(request));
}
/// <summary>
/// Checks the incoming web request to see if it carries a Flickr authentication response,
/// and provides the user's Flickr screen name and unique id if available.
/// </summary>
/// <param name="screenName">The user's Flickr screen name.</param>
/// <param name="userId">The user's Flickr unique user ID.</param>
/// <returns>
/// A value indicating whether Flickr authentication was successful;
/// otherwise <c>false</c> to indicate that no Flickr response was present.
/// </returns>
public static bool TryFinishSignInWithFlickr(out string screenName, out string userId, out string access_token)
{
screenName = null;
userId = "";
access_token = "";
var response = FlickrSignIn.ProcessUserAuthorization();
if (response == null)
{
return(false);
}
access_token = response.AccessToken;
screenName = response.ExtraData["fullname"];
userId = response.ExtraData["user_nsid"];
// If we were going to make this LOOK like OpenID even though it isn't,
// this seems like a reasonable, secure claimed id to allow the user to assume.
OpenId.Identifier fake_claimed_id = string.Format(CultureInfo.InvariantCulture, "http://flickr.com/{0}#{1}", screenName, userId);
return(true);
}
public static void SignInWithFlickr()
{
FlickrSignIn.Channel.Send(FlickrSignIn.PrepareRequestUserAuthorization());
}
