AP mode enhancements

[goatzillax]

I'd like to hook up multiple cameras to one that is acting as host in a remote environment. This seems to work pretty well, but could use some tweaks.

AP mode should probably run the ntp server to serve time out to clients; this seems to already be built into BusyBox; just need to turn it on in AP mode.

udhcpd seems to be behaving strangely -- the pid file doesn't show up, and the lease file isn't updating. If I give it USR1 it will update, but it seems to not be doing it on its own.

The AP should probably add its own configured hostname to dnsd-ap.conf.

WiFi client hostnames aren't showing up in dnsd-ap.conf as well; not sure if this should be handled with some script called by udhcp to update dnsd-ap.conf on new leases; maybe that file needs to be tossed into /tmp and generated as well. Might need dumpleases turned on...

Ultimately it might be nice to switch in/out of AP mode either with the reset button or maybe some magic SD card, but baby steps...

Thanks!

[gtxaspec]

The dnsd and dhcpd daemons in BusyBox are minimal but serve our current needs and have a small footprint, which is ideal for now.

Looking ahead, it would be beneficial to develop an "AP Self-Hosted Server Mode." However, compatibility with multiple Wi-Fi clients may vary across drivers, so this feature would require thorough testing.

If you're interested in contributing, feel free to submit a pull request!

[goatzillax]

I think BusyBox should have enough to do what I need. I think we just need to turn on dumpleases and ntpd server.

Unfortunately I can't seem to get the build system to work right so I'm having trouble testing this, and I don't want to do a PR on something I haven't tested.

Is there a way I can get a build with these turned on?

[themactep]

clone https://github.com/themactep/docker-worker
build inside the container

[goatzillax]

OK so I'm part of the way there.

There are two things I'm not super sure about:

1. There seems to be some nsswitch or whatever issue where the client cameras aren't resolving the hostnames consistently correctly.
2. When udhcpd assigns a new lease it can dumpleases into /tmp/dnsd.conf, but what would be the preferred way to restart the dnsd inside a script?