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Starting implementation of Bluetooth events
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@peterfoot
peterfoot committed Mar 9, 2021
1 parent b38d841 commit e7146c2
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Showing 3 changed files with 159 additions and 11 deletions.
2 changes: 1 addition & 1 deletion InTheHand.Net.Bluetooth/Platforms/Win32/BluetoothDeviceInfo.win32.cs
View file
Expand Up @@ -29,7 +29,7 @@ public BluetoothDeviceInfo(BluetoothAddress address)
{
_info = BLUETOOTH_DEVICE_INFO.Create();
_info.Address = address;
NativeMethods.BluetoothGetDeviceInfo(IntPtr.Zero, ref _info);
DoRefresh();
}

BluetoothAddress GetDeviceAddress()
Expand Down
130 changes: 120 additions & 10 deletions InTheHand.Net.Bluetooth/Platforms/Win32/NativeMethods.cs
View file
Expand Up @@ -2,7 +2,7 @@
//
// InTheHand.Net.Bluetooth.Win32.NativeMethods
//
// Copyright (c) 2003-2020 In The Hand Ltd, All rights reserved.
// Copyright (c) 2003-2021 In The Hand Ltd, All rights reserved.
// This source code is licensed under the MIT License

using System;
Expand Down Expand Up @@ -35,10 +35,8 @@ public static bool IsRunningOnMono()
return _isRunningOnMono.Value;
}

[DllImport("User32", ExactSpelling = true)]
internal static extern IntPtr GetActiveWindow();

// Requires Vista SP2 or later

// Authentication
[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true, CharSet = CharSet.Unicode)]
internal static extern int BluetoothRegisterForAuthenticationEx(ref BLUETOOTH_DEVICE_INFO pbtdi, out IntPtr phRegHandle, BluetoothAuthenticationCallbackEx pfnCallback, IntPtr pvParam);

Expand All @@ -49,7 +47,6 @@ public static bool IsRunningOnMono()
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool BluetoothUnregisterAuthentication(IntPtr hRegHandle);


[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = false, CharSet = CharSet.Unicode)]
internal static extern int BluetoothSendAuthenticationResponseEx(IntPtr hRadio, ref BLUETOOTH_AUTHENTICATE_RESPONSE__PIN_INFO pauthResponse);

Expand All @@ -68,6 +65,7 @@ public static bool IsRunningOnMono()
[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
internal static extern int BluetoothRemoveDevice(ref ulong pAddress);


// Radio
[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
internal static extern IntPtr BluetoothFindFirstRadio(ref BLUETOOTH_FIND_RADIO_PARAMS pbtfrp, out IntPtr phRadio);
Expand Down Expand Up @@ -100,6 +98,7 @@ public static bool IsRunningOnMono()
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool BluetoothEnableIncomingConnections(IntPtr hRadio, bool fEnabled);


// Discovery
[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
internal static extern IntPtr BluetoothFindFirstDevice(ref BLUETOOTH_DEVICE_SEARCH_PARAMS pbtsp, ref BLUETOOTH_DEVICE_INFO pbtdi);
Expand All @@ -118,20 +117,23 @@ public static bool IsRunningOnMono()
[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
internal static extern int BluetoothSetServiceState(IntPtr hRadio, ref BLUETOOTH_DEVICE_INFO pbtdi, ref Guid pGuidService, uint dwServiceFlags);

[DllImport("kernel32.dll", ExactSpelling = true, SetLastError = true)]
[DllImport("kernel32", ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool CloseHandle(IntPtr handle);

//SetService
[DllImport(wsDll, EntryPoint = "WSASetService", SetLastError = true)]
// SetService
[DllImport(wsDll, ExactSpelling = true, EntryPoint = "WSASetService", SetLastError = true)]
internal static extern int WSASetService(ref WSAQUERYSET lpqsRegInfo, WSAESETSERVICEOP essoperation, int dwControlFlags);

// Last Error
[DllImport(wsDll, EntryPoint = "WSAGetLastError", SetLastError = true)]
[DllImport(wsDll, ExactSpelling = true, EntryPoint = "WSAGetLastError", SetLastError = true)]
internal static extern int WSAGetLastError();


// Picker
[DllImport("user32", ExactSpelling = true, SetLastError = true)]
internal static extern IntPtr GetActiveWindow();

[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool BluetoothSelectDevices(ref BLUETOOTH_SELECT_DEVICE_PARAMS pbtsdp);
Expand All @@ -142,9 +144,18 @@ public static bool IsRunningOnMono()

internal delegate bool PFN_DEVICE_CALLBACK(IntPtr pvParam, ref BLUETOOTH_DEVICE_INFO pDevice);


[DllImport(bthpropsDll, ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool BluetoothDisplayDeviceProperties(IntPtr hwndParent, ref BLUETOOTH_DEVICE_INFO pbtdi);

// Events
[DllImport("user32", CharSet = CharSet.Unicode, SetLastError = true, EntryPoint = "RegisterDeviceNotification")]
internal static extern RegisterDeviceNotificationSafeHandle RegisterDeviceNotification(
IntPtr hRecipient,
ref DEV_BROADCAST_HANDLE notificationFilter,
RegisterDeviceNotificationFlags flags
);
}

/// <summary>
Expand Down Expand Up @@ -185,4 +196,103 @@ internal struct BLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS
/// </summary>
internal uint Numeric_Value_Passkey;
}

struct DEV_BROADCAST_HANDLE
{
// 32-bit: 3*4 + 2*4 + 16 + 4 + a = 6*4+16 = 24+16 + a = 40 + a = 44
// 64-bit: (3+1)*4 + 2*8 + 16 + 4 + a = 16+16+16+4 + a = 52 + a = 56
const int SizeWithoutFakeDataArray = 40;
const int SizeOfOneByteWithPadding = 4;
const int SizeWithFakeDataArray = SizeWithoutFakeDataArray + SizeOfOneByteWithPadding;
static int ActualSizeWithFakeDataArray;

public DEV_BROADCAST_HDR header;
//--
internal readonly IntPtr dbch_handle;
internal readonly IntPtr dbch_hdevnotify;
internal readonly Guid dbch_eventguid;
internal readonly Int32 dbch_nameoffset;
// We can't include the fake data array because we use this struct as
// the first field in other structs!
// byte dbch_data__0; //dbch_data[1];

//----
public DEV_BROADCAST_HANDLE(IntPtr deviceHandle)
{
this.header.dbch_reserved = 0;
this.dbch_hdevnotify = IntPtr.Zero;
this.dbch_eventguid = Guid.Empty;
this.dbch_nameoffset = 0;
//--
this.header.dbch_devicetype = DbtDevTyp.Handle;
this.dbch_handle = deviceHandle;
//System.Diagnostics.Debug.Assert(
// SizeWithoutFakeDataArray == System.Runtime.InteropServices.Marshal.SizeOf(typeof(DEV_BROADCAST_HANDLE)),
// "Size not as expected");
if (ActualSizeWithFakeDataArray == 0)
{
int actualSizeWithoutFakeDataArray = System.Runtime.InteropServices.Marshal.SizeOf(typeof(DEV_BROADCAST_HANDLE));
ActualSizeWithFakeDataArray = Pad(1 + actualSizeWithoutFakeDataArray, IntPtr.Size);
}
this.header.dbch_size = ActualSizeWithFakeDataArray;
//this.header.dbch_size = actualSizeWithoutFakeDataArray;

}

private static int Pad(int size, int alignment)
{
int x = size + alignment - 1;
x /= alignment;
x *= alignment;
return x;
}

}

[StructLayout(LayoutKind.Sequential)]
internal struct DEV_BROADCAST_HDR
{
internal int dbch_size;
internal DbtDevTyp dbch_devicetype;
internal int dbch_reserved;
}

internal enum DbtDevTyp : uint
{
/// <summary>
/// OEM-defined device type
/// </summary>
Oem = 0x00000000,
/// <summary>
/// Devnode number
/// /// </summary>
DevNode = 0x00000001,
/// <summary>
///
/// </summary>
Volume = 0x00000002,
/// <summary>
///
/// </summary>
Port = 0x00000003,
/// <summary>
/// Network resource
/// </summary>
Network = 0x00000004,
/// <summary>
/// Device interface class
/// </summary>
DeviceInterface = 0x00000005,
/// <summary>
/// File system handle
/// </summary>
Handle = 0x00000006
}

internal enum RegisterDeviceNotificationFlags
{
WINDOW_HANDLE = 0x00000000,
SERVICE_HANDLE = 0x00000001,
ALL_INTERFACE_CLASSES = 0x00000004
}
}
38 changes: 38 additions & 0 deletions InTheHand.Net.Bluetooth/Platforms/Win32/RegisterDeviceNotificationSafeHandle.cs
View file
@@ -0,0 +1,38 @@
// 32feet.NET - Personal Area Networking for .NET
//
// InTheHand.Net.Bluetooth.Win32.RegisterDeviceNotificationSafeHandle
//
// Copyright (c) 2008-2021 In The Hand Ltd, All rights reserved.
// Copyright (c) 2008-2011 Alan J.McFarlane, All rights reserved.
// This source code is licensed under the MIT License

using Microsoft.Win32.SafeHandles;
using System;
using System.Runtime.InteropServices;

namespace InTheHand.Net.Bluetooth.Win32
{
internal sealed class RegisterDeviceNotificationSafeHandle : SafeHandleZeroOrMinusOneIsInvalid
{
public RegisterDeviceNotificationSafeHandle() : base(true) // ownsHandle
{
}

protected override bool ReleaseHandle()
{
return BluetoothUnregisterDeviceNotification(handle);
}

private static bool BluetoothUnregisterDeviceNotification(IntPtr deviceNotificationHandle)
{
System.Diagnostics.Debug.Assert(deviceNotificationHandle != IntPtr.Zero, "Device notification not registered.");
bool success = UnregisterDeviceNotification(deviceNotificationHandle);
System.Diagnostics.Debug.Assert(success, "UnregisterDeviceNotification success false.");
return success;
}

[DllImport("user32", ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnregisterDeviceNotification(IntPtr handle);
}
}

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