ffac-ssid-changer broken for some devices on OpenWrt23

[Djfe]

error in logread no hostapd-phy*, exiting with error code 2
https://github.com/freifunk-gluon/community-packages/blob/master/ffac-ssid-changer/shsrc/ssid-changer.sh#L13

The files in /var/run on the Ubiquiti UniFi 6 LR are called
hostapd-wl0.conf
hostapd-wl1.conf
now.

Let's see how upstream (Gluon) handles this change (phy's don't have to be called phy anymore) and then adapt the change to this package :)
freifunk-gluon/gluon#3020

[maurerle]

Do you think it would be sufficient to use hostapd-* instead? which would probably be the easiest fix

[Djfe]

I'm not sure whether that's a longterm fix

It's an easy fix and unlike Gluon it looks like this script doesn't parse the filename (at a quick glance) so it might be worth a try.
I don't know: is it certain, that all hostapd-* files are wifi related (like hostapd-phy* where)

[grische]

Following djfe's comment, I guess this script should also use netfid's get_board_phy_name() here?
freifunk-gluon/gluon#3020 (comment)

[maurerle]

So following the information from:
freifunk-gluon/gluon#3223

we should also use iwinfo.nl80211.phyname in the long run.

Still we have the problem of #93 which I did not yet investigate.

Further improvements to this are needed to proper handle wan radio #82

Hostapd

While it has also been discussed to find a proper way of changing the SSID.
That means, a way without changing the running config and change it back afterwards.
A way that turns off the OWE SSID instead of breaking it.

In the HostAP repo, there is a test to switch the SSID of a wifi:
https://w1.fi/cgit/hostap/commit/?id=709f18d501fbfc9dfd75aa205f506479f8f6db2d
Though I do not really understand how this works.

There is the python client which sends a cmd to a socket - basically something like this:

self.s = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
self.dest = path
self.local = "/tmp/wpa_ctrl_" + str(os.getpid()) + '-' + str(counter)
counter += 1
self.s.bind(self.local)
self.s.connect(self.dest)
cmd = "SET ssid test-wpa2-psk-new"
self.s.send(cmd)

Yet I doubt this is helpful for us in any way.

Way forward

All in all I think it would be best to rewrite the ssid-changer.sh in lua once we have found a way to properly reload the config and change the SSID.