On 04/17/2018 03:27 PM, Jouni Malinen wrote:
On Tue, Apr 17, 2018 at 03:18:02PM -0700, Ben Greear wrote:I do want to receive events, such as notification of when 4-way auth completed so I could know when to start the dhcp client process ('iw event' doesn't seem to offer an event for this, so that is why I was using supplicant).So this would be the exact use case that wpa_cli -a<action script> was added for..
Well, my 'action' needs to be handled by my big complicated program, so I didn't think having it call a script was the proper thing to do. And, just FYI, sometimes at least my hacked wpa_cli stops receiving messages from the supplicant after a while...restarting wpa_cli fixes things, and debugging made me think it might be a supplicant issue. I can detect it easily enough and restarting wpa_cli was easier than figuring out the real problem so far...
I don't want to poll, as that would be inefficient in my setup where I have lots of virtual stations, so it seemed that wpa_cli in a monitor mode would be a good option, and it seemed less work to tweak wpa_cli than to re-write something similar. Maybe I am missing your point, but how would I use wpa_ctrl.c or wpaspy.py in this case?Either use the action script for events like the CONNECTED event (which will cover that DHCP client start) or wait for monitor socket events in your own application (that would apparently now wait on stdout lines from wpa_cli) if you need some messages for debugging purposes where it does not make sense to support them with an action script. The latter case could use wpa_ctrl.c or wpaspy.py as an helper: ctrl = wpa_ctrl_open(..) wpa_ctrl_attach(ctrl) and then either blocking: while (wpa_ctrl_recv(Ctrl, buf, &buflen) == 0) { process.. } or nonblocking: fd = wpa_ctrl_get_fd(ctrl) select/poll/etc. on fd being readable and run wpa_ctrl_recv()
Ok, that would probably work for me, but at this point, I have already hacked wpa_cli to work, so might be a while before I get to re-writing this. Thanks, Ben -- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
