Google QR code generator deprecated

[headyj]

Hello,

It seems that google API generating the OTP code has been deprecated and is not working anymore: https://chart.googleapis.com/chart (see https://developers.google.com/chart/infographics/docs/qr_codes?hl=fr)

There are multiple alternatives for generating QR codes, one of them being https://quickchart.io/qr-code-api/

[lisenet]

Is this for pam_google_authenticator? I never used that functionality to be fair.

I've my OpenVPN server integrated with duo_openvpn Duo MFA (the free version).

[headyj]

This is the functionality to generate a qr code for strong auth. The qr code generation itself is working but the URL is not valid anymore.

I know it's somewhere around here but didn't had the time to investigate on how it's actually working: https://github.com/lisenet/docker-openvpn/blob/master/bin/ovpn_otp_user

[lisenet]

Is it a form of MFA then? A second factor required in order to log in? I never used that functionality therefore not entirely sure what use case it is for.

[headyj]

It generates a second factor in order to login yes. I still use the tool from the original kylemanna/docker-openvpn repo: https://github.com/kylemanna/docker-openvpn/blob/master/docs/otp.md

[lisenet]

OK, no worries, that's good to know. I won't have the capacity to look into this as I don't use the feature, however, if you'd like to raise a PR that would be appreciated.

[headyj]

OK, actually the generated data is still working (as expected) but the link is the only issue, so it's not really blocking. I will try to do a PR but I can't guarantee.