I need windows to automatically pair with bluetooth devices. I don't want the user to have to click anything on the windows side. The server will be physically located somewhere the user cannot get to. Having to pair on the user side is fine. Windows just needs to accept any requests that come in without user input.
How can I accomplish this? Registry hacks? Replace a dll? A Hardware change (autopairing dongle or something)?
Is there any SDK that will give me the tools take care of this?
Currently I am using bluecove on the windows machine on top of Microsoft stack. I tried the Widcomm stack also with no luck.
The primary protocol that devices will use to connect is RFCOMM.
EDIT:
using the accepted answer below I came up with this code, that auto-pairs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using InTheHand.Net.Bluetooth;
using System.Threading;
namespace BT
{
class BluetoothAutoSSP
{
public static void Main()
{
BluetoothAutoSSP c = new BluetoothAutoSSP();
EventHandler<BluetoothWin32AuthenticationEventArgs> handler = new EventHandler<BluetoothWin32AuthenticationEventArgs>(c.handleRequests);
BluetoothWin32Authentication authenticator = new BluetoothWin32Authentication(handler);
while (true)
{
Thread.Sleep(10);
}
}
public void handleRequests(Object thing, BluetoothWin32AuthenticationEventArgs args)
{
args.Confirm = true;
}
}
}
For the Microsoft Bluetooth stack: To support both traditional Bluetooth pairing as well as v2.1's Secure Simple Pairing use the BluetoothRegisterForAuthenticationEx function and in your callback function respond by calling BluetoothSendAuthenticationResponseEx.
See more at BluetoothWin32Authentication 32feet.NET docs which describes the way to handle that in the 32feet.NET Bluetooth library for .NET, my doc Bluetooth in Windows 7, and MSDN e.g. BluetoothRegisterForAuthenticationEx etc.
BTW Widcomm does not have a programatic way to respond to pairing (it does have a method to initiate pairing). BlueSoleil does have an API apparently.
Related
I can not find how to start WPS client in Windows 10 from command prompt or powershell. When I used Linux, everything was really ease with wla_supplicant (wpa_cli wps_pbc). Is there something similar in Windows?
Does anyone know how to set up Wi-Fi network (over WPS) key without human input in Windows?
I also tried WCN (Windows Connect Now) from Microsoft as it implements WPS features. I got also samples from Windows SDK on WCN, but they could not get key by WPS (it faild). But if I use Windows user interface to connect wiothout PIN, everyting seems to be pretty fine.
I am sure that there is possibility to do that, it is very important to perform Wifi Protected Setup by button start from the command prompt or app (C++/C#) without human intrusion or input (once WPS is on air, Windows should automatically get the network key and connect then).
I don't know if it's too late to answer, just put what I know in here and hope it can help.
First, if your system has updated to 16299(Fall Creator Update), you can just simply use new wifi api from UWP.
Install newest Windows SDK, create a C# console project, target C# version to at least 7.1, then add two reference to the project.
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETCore\v4.5\System.Runtime.WindowsRuntime.dll
C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.16299.0\Windows.winmd
After all of that , code in below should work.
using System;
using System.Threading.Tasks;
using Windows.Devices.Enumeration;
using Windows.Devices.WiFi;
class Program
{
static async Task Main(string[] args)
{
var dic = await DeviceInformation.FindAllAsync(WiFiAdapter.GetDeviceSelector());
if (dic.Count > 0)
{
var adapter = await WiFiAdapter.FromIdAsync(dic[0].Id);
foreach (var an in adapter.NetworkReport.AvailableNetworks)
{
if (an.Ssid == "Ssid which you want to connect to.")
{
// Fouth parameter which is ssid can not be set to null even if we provided
// first one, or an exception will be thrown.
await adapter.ConnectAsync(an, WiFiReconnectionKind.Manual, null, "",
WiFiConnectionMethod.WpsPushButton);
}
}
}
}
}
Build and run the exe, then push your router's button, your pc will be connect to the router.
But if you can not update to 16299, WCN will be your only choice. You may already notice that if call IWCNDevic::Connect frist with push-button method, the WSC(Wifi Simple Configuration) session will fail. That's because WNC would not start a push-button session as a enrollee, but only as a registrar. That means you have to ensure that router's button has been pushed before you call IWCNDevic::Connect. The way to do that is using Native Wifi api to scan your router repeatedly, analyse the newest WSC information element from the scan result, confirm that Selected Registrar attribute has been set to true and Device Password Id attribute has been set to 4. After that, query the IWCNDevice and call Connect function will succeed. Then you can call IWCNDevice::GetNetworkProfile to get a profile that can use to connect to the router. Because it's too much of code, I will only list the main wifi api that will be used.
WlanEnuminterfaces: Use to get a available wifi interface.
WlanRegisterNotification: Use to register a callback to handle scan an connect results.
WlanScan: Use to scan a specified wifi BSS.
WlanGetNetworkBsslist: Use to get newest BSS information after scan.
WlanSetProfile: Use to save profile for a BSS.
WlanConnect: Use to connect to a BSS.
And about the WSC information element and it's attributes, you can find all the information from Wi-Fi Simple Configuration Technical Specification v2.0.5.
For Krisz. About timeout.
You can't cast IAsyncOperation to Task directly. The right way to do that is using AsTask method. And also, you should cancel ConnectAsync after timeout.
Sample code:
var t = adapter.ConnectAsync(an, WiFiReconnectionKind.Manual, null, "",
WiFiConnectionMethod.WpsPushButton).AsTask();
if (!t.Wait(10000))
t.AsAsyncOperation().Cancel();
I am developing an Xamarin.forms application, I need to catch the imei number of mobile that is using the application. I am aware of how it is done in Android. But how can I do the same in Xamarin.forms. Please educate me.
There is no 'Forms-way' of doing this. If you know how on Android you can make use of the DependencyService. Which means in your shared project create an interface like:
public interface IImeiService
{
string GetImei();
}
Now in your Android project implement this interface, so it would be something like:
public class ImeiService : IImeiService
{
public string GetImei()
{
// ... Implement your Android code here
}
}
Register your Android code with an attribute on the class above the namespace
[assembly: Xamarin.Forms.Dependency (typeof (ImeiService))]
namespace ImeiApp.Droid {
You can now access it, back in your shared code, with:
var imei = DependencyService.Get<IImeiService>().GetImei();
If you would have an iOS implementation you could repeat the same steps, although you can, of course, use the same interface and call in shared code, so you will only need a iOS specific implementation.
However, since iOS 7 Apple disallows access to this kind of information programmatically, so you cannot get the IMEI number. And if you can, you will use code that will not be allowed through the App Store review process.
I've been working with macros on VBA for a while, and there's some information on them that I want to hide. As excel is a very unsafe language, I've come with the idea of creating an .exe file of the compiled script to avoid people from accessing my code.
I've been looking for the way to do this with Visual Studio, but can't get the answer.
Can someone show me how to do this?
Many thanks in advance :)
I dont think that you can create EXEs/DLLs by using vba. EXEs/DLLs are compiled assemblies, therefore you need a programming language/environment that can be compiled. Compiled means "pre-translated to machine language". VBA is just an interpreted language, that means that it will be translated on the fly in the VBA environment. I think you have to use C#, C++ etc. to do this. For further infromation please see:
Create a DLL using VBA editor
http://www.geeksengine.com/article/create-dll.html
https://msdn.microsoft.com/en-us/library/dt232c9t(VS.80).aspx
You can lock and hide your VBA code without creating a DLL:
http://www.excel-easy.com/vba/examples/protect-macro.html
http://www.ozgrid.com/VBA/protect-vba-code.htm
Best way to protect Excel VBA code?
But I am not sure if that solves your problem: You say, that excel VBA seems to be an unsafe language. I am not sure if I understand what you mean. If you just want to hide the contents of the script, see above. Up to now this will protect your code better than in further versions of excel. But I think there is still a way to crack that, e. g. Brute Force attack etc. Usually that are enhanced methods but if you want to be sure you (or better an experienced programmer have to create a programm (exe) for that. If secure means something different (why do you want to hide your code?) than let me know, maybe there is a other way to achieve what you want to do.
using ADODB;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace HiddenConnectionString
{
[InterfaceType(ComInterfaceType.InterfaceIsDual),
Guid("2FCEF713-CD2E-4ACB-A9CE-E57E7F51E72E")]
public interface IMyServer
{
Connection GetConnection();
void Shutdown();
}
[ClassInterface(ClassInterfaceType.None)]
[Guid("57BBEC44-C6E6-4E14-989A-B6DB7CF6FBEB")]
public class MyServer : IMyServer
{
private Connection cn;
private string cnStr = "Provider=MSDAORA.1;Password=YourPass;User ID=YourID;Data Source=YourServer";
public MyServer()
{
}
public Connection GetConnection()
{
cn = new Connection();
cn.ConnectionString = cnStr;
cn.Open();
return cn;
}
public void Shutdown()
{
cn.Close();
}
}
}
You might get this error... It is because of the InterfaceType Guid
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Check this link for the solution:
https://social.msdn.microsoft.com/Forums/en-US/26accc30-9cfb-4d86-9c27-780f51929ecb/access-is-denied-exception-from-hresult-0x80070005-eaccessdenied?forum=vsreportcontrols
This is the code but I would visit the link that Stefan suggested.
I try to connect to BLE peripheral. First, I watch for advertisements:
watcher = new BluetoothLEAdvertisementWatcher { ScanningMode = BluetoothLEScanningMode.Active };
watcher.Received += WatcherOnReceived;
watcher.Start();
and in the WatcherOnReceived callback I try to create BluetoothLEDevice
public async void WatcherOnReceived(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs btAdv)
{
BluetoothLEDevice bleDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(btAdv.BluetoothAddress);
}
However, I always get bleDevice == null in WatcherOnReceived callback. Why and how to fix it? What is the proper way of creating BLE device in UWP application? I then need to connect to that device, discover its GATT services and characteristics, enable notifications on some of them and read/write some of them.
The answer to this question is simple - do not use BLE on Windows 10. The API doesn't work or behaves randomly and is totally undocumented. I like everyone talking about IoT being next industrial revolution and Microsoft not having working BLE API after 6 year BLE exists.
See example 8 and 9 in https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/DeviceEnumerationAndPairing if you want to be able to connect to previously non-paired BLE devices, i.e. use a DeviceWatcher with a Bluetooth LE selector.
Otherwise you need to first pair it in the system's bluetooth pairing settings before you will be able to retrieve a BluetoothLEDevice from FromBluetoothAddressAsync.
You can check device information in WatcherOnReceived() to ensure that the device is what you want to connect with. Do it like this:
public async void WatcherOnReceived(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs btAdv)
{
if (btAdv.Advertisement.LocalName == "SensorTag")
{
BluetoothLEDevice bleDevice = await BluetoothLEDevice.FromBluetoothAddressAsync(btAdv.BluetoothAddress);
}
}
Use your own BLE device name instead of "SensorTag".
Note: You need pair your BLE device beforehand(either programatically like DeviceEnumerationAndPairing sample or PC's setting app as shown in the following image.).
I'm working for someone running a windows 2003 server. They want me to make a SMTP sink which can categorize what database and table we want to send messages to. They don't have exchange on this server, only the default virtual SMTP server.
I've made a class, which I think should fire when the SMTP servers onarrival event occurs. I'm having an issue registering my class however, when I run RegAsm /regfile i'm getting a "Warning, RA0000: no registeration will occur, no types to register." if I run RegAsm with /TLB it will tell me types were registered, but by class doesn't show up in the global registery and my class isn't called when mail is sent to the server. I'm a little at a loss as to what I'm doing wrong.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
namespace SMTPSink
{
[Guid("????-????-?????-????")]
[ComVisible(true)]
[ProgId("SMTPSINK")]
public class SMTPSink : CDO.ISMTPOnArrival
{
SMTPSink()
{ }
void CDO.ISMTPOnArrival.OnArrival(CDO.Message Message, ref CDO.CdoEventStatus EStatus)
{
//Simple test to see if this fires on mail arrival
}
}
}
You forgot to make the constructor public. Required to export a coclass that doesn't have the [noncreatable] type library attribute. Fix:
public SMTPSink()
{ }
Or just omit it if it doesn't do anything useful.