private void btnAddIe_Click(object sender, RoutedEventArgs e)
{
WiFiDirectInformationElement informationElement = new WiFiDirectInformationElement();
// Information element blob
DataWriter dataWriter = new DataWriter();
dataWriter.UnicodeEncoding = UnicodeEncoding.Utf8;
dataWriter.ByteOrder = ByteOrder.LittleEndian;
dataWriter.WriteUInt32(dataWriter.MeasureString(txtInformationElement.Text));
dataWriter.WriteString(txtInformationElement.Text);
informationElement.Value = dataWriter.DetachBuffer();
// Organizational unit identifier (OUI)
informationElement.Oui = CryptographicBuffer.CreateFromByteArray(Globals.CustomOui);
// OUI Type
informationElement.OuiType = Globals.CustomOuiType;
// Save this information element so we can add it when we advertise.
_informationElements.Add(informationElement);
txtInformationElement.Text = "";
rootPage.NotifyUser("IE added successfully", NotifyType.StatusMessage);
}
private void btnAddIe_Click(object sender, RoutedEventArgs e)
{
if (_publisher == null)
{
_publisher = new WiFiDirectAdvertisementPublisher();
}
if (txtInformationElement.Text == "")
{
rootPage.NotifyUser("Please specifiy an IE", NotifyType.ErrorMessage);
return;
}
WiFiDirectInformationElement IE = new WiFiDirectInformationElement();
// IE blob
DataWriter dataWriter = new DataWriter();
dataWriter.UnicodeEncoding = UnicodeEncoding.Utf8;
dataWriter.ByteOrder = ByteOrder.LittleEndian;
dataWriter.WriteUInt32(dataWriter.MeasureString(txtInformationElement.Text));
dataWriter.WriteString(txtInformationElement.Text);
IE.Value = dataWriter.DetachBuffer();
// OUI
DataWriter dataWriterOUI = new DataWriter();
dataWriterOUI.WriteBytes(Globals.CustomOui);
IE.Oui = dataWriterOUI.DetachBuffer();
// OUI Type
IE.OuiType = Globals.CustomOuiType;
_publisher.Advertisement.InformationElements.Add(IE);
txtInformationElement.Text = "";
rootPage.NotifyUser("IE added successfully", NotifyType.StatusMessage);
}
private void btnIe_Click(object sender, RoutedEventArgs e)
{
var discoveredDevice = (DiscoveredDevice)lvDiscoveredDevices.SelectedItem;
IList <WiFiDirectInformationElement> informationElements = null;
try
{
informationElements = WiFiDirectInformationElement.CreateFromDeviceInformation(discoveredDevice.DeviceInfo);
}
catch (Exception ex)
{
rootPage.NotifyUser("No Information element found: " + ex.Message, NotifyType.ErrorMessage);
}
if (informationElements != null)
{
StringWriter message = new StringWriter();
foreach (WiFiDirectInformationElement informationElement in informationElements)
{
string ouiName = CryptographicBuffer.EncodeToHexString(informationElement.Oui);
string value = string.Empty;
Byte[] bOui = informationElement.Oui.ToArray();
if (bOui.SequenceEqual(Globals.MsftOui))
{
// The format of Microsoft information elements is documented here:
// https://msdn.microsoft.com/en-us/library/dn392651.aspx
// with errata here:
// https://msdn.microsoft.com/en-us/library/mt242386.aspx
ouiName += " (Microsoft)";
}
else if (bOui.SequenceEqual(Globals.WfaOui))
{
ouiName += " (WFA)";
}
else if (bOui.SequenceEqual(Globals.CustomOui))
{
ouiName += " (Custom)";
if (informationElement.OuiType == Globals.CustomOuiType)
{
DataReader dataReader = DataReader.FromBuffer(informationElement.Value);
dataReader.UnicodeEncoding = UnicodeEncoding.Utf8;
dataReader.ByteOrder = ByteOrder.LittleEndian;
// Read the string.
try
{
string data = dataReader.ReadString(dataReader.ReadUInt32());
value = $"Data: {data}";
}
catch (Exception)
{
value = "(Unable to parse)";
}
}
}
message.WriteLine($"OUI {ouiName}, Type {informationElement.OuiType} {value}");
}
message.Write($"Information elements found: {informationElements.Count}");
rootPage.NotifyUser(message.ToString(), NotifyType.StatusMessage);
}
}
private void btnAddIe_Click(object sender, RoutedEventArgs e)
{
if (_publisher == null)
{
_publisher = new WiFiDirectAdvertisementPublisher();
}
if (txtInformationElement.Text == "")
{
rootPage.NotifyUser("Please specifiy an IE", NotifyType.ErrorMessage);
return;
}
WiFiDirectInformationElement IE = new WiFiDirectInformationElement();
// IE blob
DataWriter dataWriter = new DataWriter();
dataWriter.UnicodeEncoding = UnicodeEncoding.Utf8;
dataWriter.ByteOrder = ByteOrder.LittleEndian;
dataWriter.WriteUInt32(dataWriter.MeasureString(txtInformationElement.Text));
dataWriter.WriteString(txtInformationElement.Text);
IE.Value = dataWriter.DetachBuffer();
// OUI
DataWriter dataWriterOUI = new DataWriter();
dataWriterOUI.WriteBytes(Globals.CustomOui);
IE.Oui = dataWriterOUI.DetachBuffer();
// OUI Type
IE.OuiType = Globals.CustomOuiType;
_publisher.Advertisement.InformationElements.Add(IE);
txtInformationElement.Text = "";
rootPage.NotifyUser("IE added successfully", NotifyType.StatusMessage);
}
public OnboardingAccessPoint(string ssid, string password, Guid deviceID)
{
// Assert password length meets requirements if password is specified.
// If password is null or empty, treat this as Open network.
bool WPA2 = !String.IsNullOrEmpty(password);
if (WPA2)
{
Debug.Assert(password.Length <= MAX_WPA2_PASSWORD_LENGTH);
Debug.Assert(password.Length >= MIN_WPA2_PASSWORD_LENGTH);
}
// Begin advertising for legacy clients
_publisher = new WiFiDirectAdvertisementPublisher();
// Note: If this flag is not set, the legacy parameters are ignored
_publisher.Advertisement.IsAutonomousGroupOwnerEnabled = true;
// Setup Advertisement to use a custom SSID and WPA2 passphrase (null or empty implies Open)
_publisher.Advertisement.LegacySettings.IsEnabled = true;
_publisher.Advertisement.LegacySettings.Ssid = ssid;
_publisher.Advertisement.LegacySettings.Passphrase = WPA2 ? new PasswordCredential {
Password = password
} : null;
if (WPA2)
{
// If using WPA2, configure this device's WiFi Access Point with the password needed to connect to it
// and all other information needed by the Microsoft Onboaring Specification
// After the device is onboarded to an end-user's network this will not be broadcast anymore.
// The following code generates a Wifi Direct Information Element with the following format:
//
//
// 1Byte 1Byte 3Bytes 1Byte ... Several Bytes...
// ---------------------------------------------------------------------------------------
// | Type | Length | OUI | OUITYPE | Data [ETLV1],[ETLV2]...[ETLVn] |
// ---------------------------------------------------------------------------------------
// DD num 84 63 d6 00 [01 0A 49 6f 54 20 44 65 76 69 63 65][02....]
// bytes | I o T D e v i c e|
// | "Device Friendly Name" |
//
// Where each "ETLV" is
//
// 1Byte 1Byte ... Several Bytes...
// ---------------------------------------------------------------------------------------
// | ETLV Type | Length | Data |
// ---------------------------------------------------------------------------------------
//
// Customize this for your own device
string DEVICE_FRIENDLY_NAME = "IoT Device: " + ssid;
IEnumerable <byte> ouiData = MakeStringElement(ETLVType.FRIENDLY_NAME, DEVICE_FRIENDLY_NAME);
ouiData = ouiData.Concat(MakeTLVElement(ETLVType.DEVICE_TYPE, DEVICE_TYPE));
ouiData = ouiData.Concat(MakeStringElement(ETLVType.DEVICE_MANUFACTURER, DEVICE_MANUFACTURER_NAME));
ouiData = ouiData.Concat(MakeStringElement(ETLVType.LANGUAGE_TAG, LANGUAGE_TAG));
ouiData = ouiData.Concat(MakeGUIDElement(ETLVType.DEVICE_ID, deviceID));
ouiData = ouiData.Concat(MakeStringElement(ETLVType.PASSWORD, password));
ouiData = ouiData.Concat(MakeStringElement(ETLVType.UNCLASSIFIED_DEVICE_TYPE, UNCLASSIFIED_DEVICE_TYPE));
// Create the IoT Device Wi-Fi Beacons Partner Information Element
var infoElement = new WiFiDirectInformationElement
{
OuiType = OUI_TYPE,
Oui = ByteArrayToBuffer(MICROSOFT_OUI),
Value = ByteArrayToBuffer(ouiData.ToArray())
};
// The Maximum OUI Data Length was exceeded. Trim ouiData String lengths
Debug.Assert(infoElement.Value.Length < MAX_OUI_DATA_LENGTH);
// Add the custom Information Elements for publication
var wifiInfoElements = new List <WiFiDirectInformationElement>
{
infoElement
};
_publisher.Advertisement.InformationElements = wifiInfoElements;
}
}
private void btnAddIe_Click(object sender, RoutedEventArgs e)
{
WiFiDirectInformationElement informationElement = new WiFiDirectInformationElement();
// Information element blob
DataWriter dataWriter = new DataWriter();
dataWriter.UnicodeEncoding = UnicodeEncoding.Utf8;
dataWriter.ByteOrder = ByteOrder.LittleEndian;
dataWriter.WriteUInt32(dataWriter.MeasureString(txtInformationElement.Text));
dataWriter.WriteString(txtInformationElement.Text);
informationElement.Value = dataWriter.DetachBuffer();
// Organizational unit identifier (OUI)
informationElement.Oui = CryptographicBuffer.CreateFromByteArray(Globals.CustomOui);
// OUI Type
informationElement.OuiType = Globals.CustomOuiType;
// Save this information element so we can add it when we advertise.
_informationElements.Add(informationElement);
txtInformationElement.Text = "";
rootPage.NotifyUser("IE added successfully", NotifyType.StatusMessage);
}
private void btnIe_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
if (lvDiscoveredDevices.SelectedItems.Count == 0)
{
rootPage.NotifyUser("No device selected, please select one.", NotifyType.ErrorMessage);
return;
}
var selectedDevices = lvDiscoveredDevices.SelectedItems;
foreach (DiscoveredDevice discoveredDevice in selectedDevices)
{
try
{
var iECollection = WiFiDirectInformationElement.CreateFromDeviceInformation(discoveredDevice.DeviceInfo);
if (iECollection.Count == 0)
{
rootPage.NotifyUser("No Information Elements found", NotifyType.StatusMessage);
return;
}
StringWriter strIeOutput = new StringWriter();
String strIe = "N/A";
foreach (WiFiDirectInformationElement ie in iECollection)
{
Byte[] bOui = ie.Oui.ToArray();
if (bOui.SequenceEqual(Globals.MsftOui))
{
strIeOutput.Write("Microsoft IE: ");
}
else if (bOui.SequenceEqual(Globals.WfaOui))
{
strIeOutput.Write("WFA IE: ");
}
else if (bOui.SequenceEqual(Globals.CustomOui))
{
strIeOutput.Write("Custom IE: ");
DataReader dataReader = Windows.Storage.Streams.DataReader.FromBuffer(ie.Value);
dataReader.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
dataReader.ByteOrder = ByteOrder.LittleEndian;
// Read the string.
strIe = dataReader.ReadString(dataReader.ReadUInt32());
}
else
{
strIeOutput.Write("Unknown IE: ");
}
strIeOutput.WriteLine(String.Format("OUI Type: {0} OUI: 0x{1} 0x{2} 0x{3} IE Data: {4}\n",
Convert.ToString(ie.OuiType), Convert.ToString(bOui[0], 16), Convert.ToString(bOui[1], 16),
Convert.ToString(bOui[2], 16), strIe));
strIe = "N/A";
}
rootPage.NotifyUser(strIeOutput.ToString(), NotifyType.StatusMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser("No Information element found: " + ex.Message, NotifyType.ErrorMessage);
}
}
}
