Check for EAP credentials issue

Cobra91151

Hello!

I want to check if EAP credentials are present (stored in the registry or not) when connecting to the Enterprise wireless network from the imported profile using my program. I use this method: WlanSetProfileEapXmlUserData for storing the user credentials. The imported profile only stores the wireless network xml data and not the username and password. So, what method from Wlan API or Qt API should I use to verify that the user credentials are present for the specific wireless profile? I only need information. Thanks.

Christian Ehrlicher

@Cobra91151 said in Decode GUID issue:

How to convert it to get the QString?

What's wrong with QUuid::toByteArray() ?

Cobra91151

@Christian-Ehrlicher

Because I need to decode this data to make a comparison with some string data. Thanks.

Christian Ehrlicher

@Cobra91151 You're aware that a QByteArray can be converted to a QString?

Cobra91151

@Christian-Ehrlicher

Yes, I know. The problem here is with the last parameter and comparison. I will fix it and reply. Thanks.

Cobra91151

@Christian-Ehrlicher

Ok. I updated my code. It only returns the QString representation of the GUID not the the actual data from which it was created? Thanks.

Christian Ehrlicher

Since the uuid is properly defined I don't see why you can't remove '{' and '}'

Cobra91151

@Christian-Ehrlicher

I have changed it to: QUuid testUuid("B8F9593C-8BB3-4F25-AB6B-FDFE299CEBAD"); but it still only returns the QString representation of the GUID.

Christian Ehrlicher

@Cobra91151 said in Decode GUID issue:

but it still only returns the QString representation of the GUID.

What representation do you expect/want? Please clarify your problem so that we can understand what your real problem is.

Cobra91151

@Christian-Ehrlicher

Ok. I will clarify it. I got this GUID from the registry path: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WlanSvc\Profiles\{B8F9593C-8BB3-4F25-AB6B-FDFE299CEBAD}

It is created when connecting to the Enterprise wireless network. The reason to decode it: when I export the wlan profile, delete it and import it to the program, then it fails to connect using the imported profile because the user credentials are missing. So, I want to add checks for this issue and for example to display the dialog to enter the user credentials in such case. Thanks.

Christian Ehrlicher

It looks like you don't understand what a UUID is. It's more or less a random number - there is nothing to decode in any way.

Cobra91151

@Christian-Ehrlicher

So, there is not way to decode the GUID? It is created from the profile name + something else by Microsoft. So, it does contain some information. The reason I know that because when removing this GUID and connect to the same wireless network on the same interface, then it creates the same GUID. Thanks.

Christian Ehrlicher

@Cobra91151 said in Decode GUID issue:

So, it does contain some information.

No. See https://en.wikipedia.org/wiki/Universally_unique_identifier

Cobra91151

@Christian-Ehrlicher

Ok. So how they generate the same GUID for the wireless profile on the same interface (wlan card) twice? If it is unique random numbers, then it should be different each time. What is the pattern for this GUID: {B8F9593C-8BB3-4F25-AB6B-FDFE299CEBAD}? Thanks.

Christian Ehrlicher

@Cobra91151 said in Decode GUID issue:

So how they generate the same GUID for the wireless profile on the same interface (wlan card) twice?

If this is really the case then you have to ask the vendor.

Cobra91151

@Christian-Ehrlicher

Is there any Qt API to check for the user enterprise credentials are present or not in the system for the stored wireless profile? Thanks.

Cobra91151

I have updated my question, so it will contain the proper information regarding this issue.

Cobra91151

Hello!

I have fixed the issue by checking for wlan_notification_acm_network_available code, from the MS docs (https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/ms706902(v=vs.85)):

The wlan_notification_acm_network_available notification is sent when all of the following conditions occur:
The wireless service finds connectable networks after a scan
The interface is in the disconnected state;
There is no compatible auto-connect profile that the wireless service can use to connect.

After a while when connecting to EAP profile without the user credentials it gets wlan_notification_acm_network_available code. Now the application intercepts it and send a notification to enter the user credentials. The issue is resolved.