public override bool ShouldOverrideUrlLoading(WebView view, string url)
{
Uri uri = new Uri(url);
if (url.StartsWith(BrokerConstants.BrowserExtPrefix, StringComparison.OrdinalIgnoreCase))
{
CallState.Default.Logger.Verbose(null, "It is browser launch request");
OpenLinkInBrowser(url, ((Activity)view.Context));
view.StopLoading();
((Activity)view.Context).Finish();
return(true);
}
if (url.StartsWith(BrokerConstants.BrowserExtInstallPrefix, StringComparison.OrdinalIgnoreCase))
{
CallState.Default.Logger.Verbose(null, "It is an azure authenticator install request");
view.StopLoading();
this.Finish(view, url);
return(true);
}
if (url.StartsWith(BrokerConstants.ClientTlsRedirect, StringComparison.OrdinalIgnoreCase))
{
string query = uri.Query;
if (query.StartsWith("?"))
{
query = query.Substring(1);
}
Dictionary <string, string> keyPair = EncodingHelper.ParseKeyValueList(query, '&', true, false, null);
string responseHeader = DeviceAuthHelper.CreateDeviceAuthChallengeResponse(keyPair).Result;
Dictionary <string, string> pkeyAuthEmptyResponse = new Dictionary <string, string>();
pkeyAuthEmptyResponse[BrokerConstants.ChallangeResponseHeader] = responseHeader;
view.LoadUrl(keyPair["SubmitUrl"], pkeyAuthEmptyResponse);
return(true);
}
if (url.StartsWith(callback, StringComparison.OrdinalIgnoreCase))
{
this.Finish(view, url);
return(true);
}
if (!url.Equals(AboutBlankUri, StringComparison.OrdinalIgnoreCase) && !uri.Scheme.Equals(Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase))
{
UriBuilder errorUri = new UriBuilder(callback);
errorUri.Query = string.Format(CultureInfo.InvariantCulture, "error={0}&error_description={1}",
AdalError.NonHttpsRedirectNotSupported, AdalErrorMessage.NonHttpsRedirectNotSupported);
this.Finish(view, errorUri.ToString());
return(true);
}
return(false);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
View.BackgroundColor = UIColor.White;
webView = new UIWebView(View.Bounds);
webView.ShouldStartLoad = (wView, request, navType) =>
{
if (request == null)
{
return(true);
}
string requestUrlString = request.Url.ToString();
// If the URL has the browser:// scheme then this is a request to open an external browser
if (requestUrlString.StartsWith(BrokerConstants.BrowserExtPrefix, StringComparison.OrdinalIgnoreCase))
{
DispatchQueue.MainQueue.DispatchAsync(() => CancelAuthentication(null, null));
// Build the HTTPS URL for launching with an external browser
var httpsUrlBuilder = new UriBuilder(requestUrlString)
{
Scheme = Uri.UriSchemeHttps
};
requestUrlString = httpsUrlBuilder.Uri.AbsoluteUri;
DispatchQueue.MainQueue.DispatchAsync(
() => UIApplication.SharedApplication.OpenUrl(new NSUrl(requestUrlString)));
this.DismissViewController(true, null);
return(false);
}
if (requestUrlString.StartsWith(callback, StringComparison.OrdinalIgnoreCase) ||
requestUrlString.StartsWith(BrokerConstants.BrowserExtInstallPrefix, StringComparison.OrdinalIgnoreCase))
{
callbackMethod(new AuthorizationResult(AuthorizationStatus.Success, request.Url.ToString()));
this.DismissViewController(true, null);
return(false);
}
if (requestUrlString.StartsWith(BrokerConstants.DeviceAuthChallengeRedirect, StringComparison.OrdinalIgnoreCase))
{
Uri uri = new Uri(requestUrlString);
string query = uri.Query;
if (query.StartsWith("?", StringComparison.OrdinalIgnoreCase))
{
query = query.Substring(1);
}
Dictionary <string, string> keyPair = EncodingHelper.ParseKeyValueList(query, '&', true, false, null);
string responseHeader = DeviceAuthHelper.CreateDeviceAuthChallengeResponse(keyPair).Result;
NSMutableUrlRequest newRequest = (NSMutableUrlRequest)request.MutableCopy();
newRequest.Url = new NSUrl(keyPair["SubmitUrl"]);
newRequest[BrokerConstants.ChallengeResponseHeader] = responseHeader;
wView.LoadRequest(newRequest);
return(false);
}
if (!request.Url.AbsoluteString.Equals(AboutBlankUri, StringComparison.OrdinalIgnoreCase) &&
!request.Url.Scheme.Equals(Uri.UriSchemeHttps, StringComparison.OrdinalIgnoreCase))
{
AuthorizationResult result = new AuthorizationResult(AuthorizationStatus.ErrorHttp);
result.Error = AdalError.NonHttpsRedirectNotSupported;
result.ErrorDescription = AdalErrorMessage.NonHttpsRedirectNotSupported;
callbackMethod(result);
this.DismissViewController(true, null);
return(false);
}
return(true);
};
webView.LoadFinished += delegate
{
// If the title is too long, iOS automatically truncates it and adds ...
this.Title = webView.EvaluateJavascript(@"document.title") ?? "Sign in";
};
View.AddSubview(webView);
this.NavigationItem.LeftBarButtonItem = new UIBarButtonItem(UIBarButtonSystemItem.Cancel,
this.CancelAuthentication);
webView.LoadRequest(new NSUrlRequest(new NSUrl(this.url)));
// if this is false, page will be 'zoomed in' to normal size
//webView.ScalesPageToFit = true;
}