RaspAP as a guest wifi repeater to support daily changing guest wifi password set via REST API

[amaximus]

I'm looking for a solution to repeat my guest wifi from a TP-Link router that does not support dynamic guest wifi password setting with the use of RaspAP's REST API.
Unfortunately I could not find documentation on all available REST API endpoints that RaspAP supports.

Can RaspAP be set up for the above use case?

(on a higher level Home Assistant would trigger changing the guest wifi password via a REST API call on a daily basis generating and displaying a related QR-code on its dashboard)

[billz]

The API endpoints are fully documented and can be tested interactively as described here.

The existing endpoints are all GET methods. ie., they retrieve router settings, but do not do things like set passwords. This could of course change in the future, though. @NL-TCH is the original author of RaspAP's API and may have some ideas.

[amaximus]

Thanks for your quick answer.

If the wifi password of the repeater SSID can be found on the local file system, that's also OK for me. Then I'd update it over ssh commands instead of REST API.

[billz]

Yes, the passphrase is included in the /ap endpoint response:

{
  "driver": "nl80211",
  "ctrl_interface": "/var/run/hostapd",
  "ctrl_interface_group": "0",
  "auth_algs": "1",
  "wpa_key_mgmt": "WPA-PSK",
  "beacon_int": "100",
  "ssid": "RaspAP",
  "channel": "1",
  "hw_mode": "g",
  "ieee80211n": "1",
  "wpa_passphrase": "[passphrase]",
  "interface": "/var/run/hostapd",
  "wpa": "2",
  "wpa_pairwise": "CCMP",
  "country_code": "US",
  "ignore_broadcast_ssid": "0"
}

[amaximus]

The wpa_passphrase can be found and set in the docker-compose.yaml (RASPAP_SSID_PASS) so it would work to stop the container, reset the RASPAP_SSID_PASS and rebuild and start the container.

Now I only have to make the Wifi Repeater working. Currently the Wifi client is not connecting. Not throwing errors, but the TP-Link Guest wifi SSID remains in the Known section instead of turning into Connected.

[amaximus]

@billz thanks for your help and this amazing tool.

I managed to implement the solution: dropped using the docker image and installed RaspAP manually. After configuring everything the repeater works like a charm.
Changing wpa_passphrase value in hostapd.conf and restarting the hostapd service, clients have to connect with the new password.

On the RaspAP UI the new password is not reflected yet, but since the solution works without the need of UI, finding a solution for fixing this has lower priority.