private void DoAuth2Configuration(DfpAppConfig config) {
// Since we use this page for OAuth callback also, we set the callback
// url as the current page. For a non-web application, this will be null.
config.OAuth2RedirectUri = Request.Url.GetLeftPart(UriPartial.Path);
// Create an OAuth2 object for handling OAuth2 flow.
OAuth2ProviderForApplications oAuth = new OAuth2ProviderForApplications(config);
if (Request.Params["state"] == null) {
// This is the first time this page is being loaded.
// Set the state variable to any value that helps you recognize
// when this url will be called by the OAuth2 server.
oAuth.State = "callback";
// Create an authorization url and redirect the user to that page.
Response.Redirect(oAuth.GetAuthorizationUrl());
} else if (Request.Params["state"] == "callback") {
// This page was loaded because OAuth server did a callback.
// Retrieve the authorization code from the url and use it to fetch
// the access token. This call will also fetch the refresh token if
// your mode is offline.
oAuth.FetchAccessAndRefreshTokens(Request.Params["code"]);
// Save the OAuth2 provider for future use. If you wish to save only
// the values and restore the object later, then save
// oAuth.RefreshToken, oAuth.AccessToken, oAuth.UpdatedOn and
// oAuth.ExpiresIn.
//
// You can later restore the values as
// DfpUser user = new DfpUser();
// user.Config.OAuth2Mode = OAuth2Flow.APPLICATION;
// OAuth2ProviderForApplications oAuth =
// (user.OAuthProvider as OAuth2ProviderForApplications);
// oAuth.RefreshToken = xxx;
// oAuth.AccessToken = xxx;
// oAuth.UpdatedOn = xxx;
// oAuth.ExpiresIn = xxx;
//
// Note that only oAuth.RefreshToken is mandatory. If you leave
// oAuth.AccessToken as empty, or if oAuth.UpdatedOn + oAuth.ExpiresIn
// is in the past, the access token will be refreshed by the library.
// You can listen to this event as
//
// oAuth.OnOAuthTokensObtained += delegate(AdsOAuthProvider provider) {
// OAuth2ProviderForApplications oAuth =
// (provider as OAuth2ProviderForApplications);
// // Save oAuth.RefreshToken, oAuth.AccessToken, oAuth.UpdatedOn and
// // oAuth.ExpiresIn.
//};
Session["OAuthProvider"] = oAuth;
// Redirect the user to the main page.
Response.Redirect("Default.aspx");
} else {
throw new Exception("Unknown state for OAuth callback.");
}
}
/// <summary>
/// Handles the Load event of the Page control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing
/// the event data.</param>
protected void Page_Load(object sender, EventArgs e) {
// Create an DfpAppConfig object with the default settings in
// App.config.
DfpAppConfig config = new DfpAppConfig();
if (config.AuthorizationMethod == DfpAuthorizationMethod.OAuth2) {
if (config.OAuth2Mode == OAuth2Flow.APPLICATION &&
string.IsNullOrEmpty(config.OAuth2RefreshToken)) {
DoAuth2Configuration(config);
}
}
}
private void ConfigureForClientLogin() {
DfpAppConfig config = new DfpAppConfig();
config.AuthorizationMethod = DfpAuthorizationMethod.ClientLogin;
serviceFactory.Config = config;
}
private void ConfigureForOAuth2() {
DfpAppConfig config = new DfpAppConfig();
config.AuthorizationMethod = DfpAuthorizationMethod.OAuth2;
serviceFactory.Config = config;
}
