public void NavigateNimigemScheme(string fullQuery, System.Windows.Navigation.NavigatingCancelEventArgs e, string payload, bool requireSecure = true)
{
var NimigemUri = e.Uri.OriginalString;
//at present we only support UTF8 plain text payloads
byte[] nimigemBody = Encoding.UTF8.GetBytes(payload);
var mime = "text/plain; charset=utf-8";
var settings = new UserSettings();
var uri = new Uri(fullQuery);
//use a proxy for any other scheme that is not Nimigem
var proxy = ""; //use none
var connectInsecure = false;
if (uri.Host == "localhost")
{
//to support local testing servers, dont require secure connection on localhost
//**FIX ME, or have an option
connectInsecure = true;
}
X509Certificate2 certificate;
certificate = Session.Instance.CertificatesManager.GetCertificate(uri.Host);
try
{
NimigemResponse nimigemResponse;
try
{
nimigemResponse = (NimigemResponse)Nimigem.Fetch(uri, nimigemBody, mime, certificate, proxy, connectInsecure, settings.MaxDownloadSizeMb * 1024, settings.MaxDownloadTimeSeconds);
}
catch (Exception err)
{
//warn, but continue if there are server validation errors
//in these early days of Nimigem we dont forbid visiting a site with an expired cert or mismatched host name
//but we do give a warning each time
if (err.Message == "The remote certificate was rejected by the provided RemoteCertificateValidationCallback.")
{
mMainWindow.ToastNotify("Note: " + err.Message + " for: " + e.Uri.Authority, ToastMessageStyles.Warning);
//try again insecure this time
nimigemResponse = (NimigemResponse)Nimigem.Fetch(uri, nimigemBody, mime, certificate, proxy, connectInsecure, settings.MaxDownloadSizeMb * 1024, settings.MaxDownloadTimeSeconds);
}
else
{
//reraise
throw;
}
}
if (nimigemResponse.codeMajor == '1')
{
//invalid in nimigem
HandleInvalidResponse(nimigemResponse);
}
else if (nimigemResponse.codeMajor == '2')
{
//success
if (nimigemResponse.codeMinor == '5')
{
//valid submission - get the new target to retrieve
mMainWindow.ToastNotify(String.Format("Submit successful: retrieving result: {0}", nimigemResponse.meta));
var successUri = new Uri(nimigemResponse.meta);
//must be a response redirect to gemini URL
if (successUri.Scheme != "gemini")
{
HandleInvalidResponse(nimigemResponse);
}
var geminiTarget = new GeminiNavigator(mMainWindow, mMainWindow.BrowserControl);
var normalisedUri = UriTester.NormaliseUri(successUri);
var siteIdentity = new SiteIdentity(normalisedUri, Session.Instance);
geminiTarget.NavigateGeminiScheme(successUri.OriginalString, e, siteIdentity);
}
else
{
//no other 2X responses are valid
HandleInvalidResponse(nimigemResponse);
}
}
// codemajor = 3 is redirect - should eventually end in success or raise an error
else if (nimigemResponse.codeMajor == '4')
{
//same as normal Gemini
mMainWindow.ToastNotify("Temporary failure (status 4X)\n\n" +
nimigemResponse.meta + "\n\n" +
e.Uri.ToString(), ToastMessageStyles.Warning);
}
else if (nimigemResponse.codeMajor == '5')
{
//same as normal Gemini
if (nimigemResponse.codeMinor == '1')
{
mMainWindow.ToastNotify("Page not found\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else
{
mMainWindow.ToastNotify("Permanent failure (status 5X)\n\n" +
nimigemResponse.meta + "\n\n" +
e.Uri.ToString(), ToastMessageStyles.Warning);
}
}
else if (nimigemResponse.codeMajor == '6')
{
mMainWindow.ToastNotify("Certificate required. Choose one and try again.\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else
{
mMainWindow.ToastNotify("Unexpected output from server " +
"(status " + nimigemResponse.codeMajor + "." + nimigemResponse.codeMinor + ") " +
nimigemResponse.meta + "\n\n"
+ e.Uri.ToString(), ToastMessageStyles.Warning);
}
}
catch (Exception err)
{
//generic handler for other runtime errors
mMainWindow.ToastNotify("Error getting Nimigem content for " + e.Uri.ToString() + "\n\n" + err.Message, ToastMessageStyles.Warning);
}
//make the window responsive again
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
e.Cancel = true;
}
private void BrowserControl_Navigating(object sender, System.Windows.Navigation.NavigatingCancelEventArgs e)
{
var normalisedUri = UriTester.NormaliseUri(e.Uri);
var siteIdentity = new SiteIdentity(normalisedUri, Session.Instance);
var fullQuery = normalisedUri.OriginalString;
//sanity check we have a valid URL syntax at least
if (e.Uri.Scheme == null)
{
ToastNotify("Invalid URL: " + normalisedUri.OriginalString, ToastMessageStyles.Error);
e.Cancel = true;
}
var settings = new Settings();
ToggleContainerControlsForBrowser(false);
//these are the only ones we "navigate" to. We do this by downloading the GMI content
//converting to HTML and then actually navigating to that.
if (normalisedUri.Scheme == "gemini")
{
var geminiNavigator = new GeminiNavigator(this, this.BrowserControl);
geminiNavigator.NavigateGeminiScheme(fullQuery, e, siteIdentity);
}
else if (normalisedUri.Scheme == "gopher")
{
var gopherNavigator = new GopherNavigator(this, this.BrowserControl);
gopherNavigator.NavigateGopherScheme(fullQuery, e, siteIdentity);
}
else if (normalisedUri.Scheme == "about")
{
var aboutNavigator = new AboutNavigator(this, this.BrowserControl);
aboutNavigator.NavigateAboutScheme(e, siteIdentity);
}
else if (normalisedUri.Scheme.StartsWith("http")) //both http and https
{
var linkId = "";
////doc might be null - you need to check when using!
var doc = (HTMLDocument)BrowserControl.Document;
////this is how we could detect a click on a link to an image...
if (doc?.activeElement != null)
{
linkId = doc.activeElement.id;
}
//detect ctrl click
if (
Keyboard.IsKeyDown(Key.LeftCtrl) ||
Keyboard.IsKeyDown(Key.RightCtrl) ||
settings.HandleWebLinks == "System web browser" ||
linkId == "web-launch-external"
)
{
//open in system web browser
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(e.Uri.ToString());
ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
else if (settings.HandleWebLinks == "Gemini HTTP proxy")
{
// use a gemini proxy for http links
var geminiNavigator = new GeminiNavigator(this, this.BrowserControl);
geminiNavigator.NavigateGeminiScheme(fullQuery, e, siteIdentity);
}
else
{
//use internal navigator
var httpNavigator = new HttpNavigator(this, this.BrowserControl);
httpNavigator.NavigateHttpScheme(fullQuery, e, siteIdentity, linkId);
}
}
else if (normalisedUri.Scheme == "file")
{
//just load the converted html file
//no further action.
}
else
{
//we don't care about any other protocols
//so we open those in system web browser to deal with
var launcher = new ExternalNavigator(this);
launcher.LaunchExternalUri(e.Uri.ToString());
ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
}