/// <summary>
/// Pair with the hostname in the textbox
/// </summary>
public async Task Pair(CoreDispatcher uiDispatcher, Computer c)
{
Debug.WriteLine("Pairing...");
// Get the pair state.
bool?pairState = await QueryPairState();
if (pairState == true)
{
DialogUtils.DisplayDialog(uiDispatcher, "This device is already paired to the host PC", "Already Paired");
return;
}
// pairstate = null. We've encountered an error
else if (!pairState.HasValue)
{
DialogUtils.DisplayDialog(uiDispatcher, "Failed to query pair state", "Pairing failed");
return;
}
bool challenge = await PairingCryptoHelpers.PerformPairingHandshake(uiDispatcher, new WindowsCryptoProvider(), nv, nv.GetUniqueId());
if (!challenge)
{
Debug.WriteLine("Challenges failed");
return;
}
// Otherwise, everything was successful
MainPage.SaveComputer(c);
// FIXME: We can't have two dialogs open at once.
// DialogUtils.DisplayDialog(uiDispatcher, "Pairing successful", "Success");
}
private static async Task<X509Certificate> ExtractPlainCert(XmlQuery q, String tag)
{
String certHexString = await q.ReadXmlElement(tag);
byte[] certBytes = PairingCryptoHelpers.HexToBytes(certHexString);
String certText = Encoding.UTF8.GetString(certBytes, 0, certBytes.Length);
PemReader certReader = new PemReader(new StringReader(certText));
return (X509Certificate)certReader.ReadObject();
}
/// Get the local device's name
/// </summary>
/// <returns>Unique ID for the device</returns>
public String GetUniqueId()
{
var settings = ApplicationData.Current.RoamingSettings;
byte[] bytes;
if (settings.Values.ContainsKey("uniqueid"))
{
bytes = (byte[])settings.Values["uniqueid"];
}
else
{
bytes = PairingCryptoHelpers.GenerateRandomBytes(8);
settings.Values["uniqueid"] = bytes;
}
return(PairingCryptoHelpers.BytesToHex(bytes));
}
/// <summary>
/// Executed when the user presses "Start Streaming Steam!"
/// </summary>
private async Task StreamButton_Click_Common()
{
Debug.WriteLine("Start Streaming button pressed");
selected = (Computer)computerPicker.SelectedItem;
// User hasn't selected a machine or selected a placeholder
if (selected == null || String.IsNullOrWhiteSpace(selected.IpAddress))
{
DialogUtils.DisplayDialog(this.Dispatcher, "No machine selected", "Streaming Failed");
}
else
{
// Stop enumerating machines while we're trying to check pair state
mDnsTimer.Stop();
byte[] aesKey = PairingCryptoHelpers.GenerateRandomBytes(16);
// GameStream only uses 4 bytes of a 16 byte IV. Go figure.
byte[] aesRiIndex = PairingCryptoHelpers.GenerateRandomBytes(4);
byte[] aesIv = new byte[16];
Array.ConstrainedCopy(aesRiIndex, 0, aesIv, 0, aesRiIndex.Length);
SettingsPage s = new SettingsPage();
MoonlightStreamConfiguration config = new MoonlightStreamConfiguration(
s.GetStreamWidth(),
s.GetStreamHeight(),
s.GetStreamFps(),
10000, // FIXME: Scale by resolution
1024,
aesKey, aesIv);
StreamContext context = await ConnectionManager.StartStreaming(this.Dispatcher, selected, config);
if (context != null)
{
this.Frame.Navigate(typeof(StreamFrame), context);
}
}
}
/// <summary>
/// Create start HTTP request
/// </summary>
private async Task <bool> StartOrResumeApp(NvHttp nv, MoonlightStreamConfiguration streamConfig)
{
XmlQuery serverInfo = new XmlQuery(nv.BaseUrl + "/serverinfo?uniqueid=" + nv.GetUniqueId());
string currentGameString = await serverInfo.ReadXmlElement("currentgame");
if (currentGameString == null)
{
return(false);
}
string versionString = await serverInfo.ReadXmlElement("appversion");
if (versionString == null)
{
return(false);
}
serverMajorVersion = Convert.ToInt32(versionString.Substring(0, 1));
byte[] aesIv = streamConfig.GetRiAesIv();
int riKeyId =
(int)(((aesIv[0] << 24) & 0xFF000000U) |
((aesIv[1] << 16) & 0xFF0000U) |
((aesIv[2] << 8) & 0xFF00U) |
(aesIv[3] & 0xFFU));
string riConfigString =
"&rikey=" + PairingCryptoHelpers.BytesToHex(streamConfig.GetRiAesKey()) +
"&rikeyid=" + riKeyId;
// Launch a new game if nothing is running
if (currentGameString == null || currentGameString.Equals("0"))
{
XmlQuery x = new XmlQuery(nv.BaseUrl + "/launch?uniqueid=" + nv.GetUniqueId() + "&appid=" + context.appId +
"&mode=" + streamConfig.GetWidth() + "x" + streamConfig.GetHeight() + "x" + streamConfig.GetFps() +
"&additionalStates=1&sops=1" + // FIXME: make sops configurable
riConfigString);
string sessionStr = await x.ReadXmlElement("gamesession");
if (sessionStr == null || sessionStr.Equals("0"))
{
return(false);
}
return(true);
}
else
{
// A game was already running, so resume it
// FIXME: Quit and relaunch if it's not the game we came to start
XmlQuery x = new XmlQuery(nv.BaseUrl + "/resume?uniqueid=" + nv.GetUniqueId() + riConfigString);
string resumeStr = await x.ReadXmlElement("resume");
if (resumeStr == null || resumeStr.Equals("0"))
{
return(false);
}
return(true);
}
}
