LE 9.2.8: Permanently setting up a long Wifi password such as 60 characters via SSH login: No password prompt from connmanctl while kodi is running

nov2021 · November 21, 2021 at 11:31 AM

After SSH to the LibreELEC server on my Rasp Pi 3 using the latest LibreELEC-RPi2.arm-9.2.8.img.gz software I could not set a very long Wifi password via command line because I did not receive the password prompt from connmanctl when logged in via SSH. Instead the password prompt went straight to the kodi GUI after typing "connect wifi_blablablabla_psk" which I did not want to use because I wanted not to type my long and complex wifi password manually.

My error was: No password prompt from connmanctl

My workaround to permanently setting up a long Wifi password such as 60 characters via SSH login was:

- ssh to LibreELEC server

- stop kodi because I need to be able to get the password prompt via command line

systemctl stop kodi

- set passowrd

connmanctl

connmanctl> scan wifi

connmanctl> services

connmanctl> agent on

connmanctl> connect wifi_blablablabla_psk <-- your wifi network

Passphrase? <-- paste long wifi password

connmanctl> quit

- start kodi

systemctl start kodi

exit

Sources:

**chewitt** · November 22, 2021 at 3:01 AM

I suspect this has been fixed in the LE10 codebase. I'm frequently setting passwords via connmanctl and have never seen the behaviour of it prompting in the GUI when I try to configure something from the console.

**CvH** · November 22, 2021 at 11:25 AM

wasn't conman itself limited to some characters? 60 sounds alot

**chewitt** · November 22, 2021 at 3:15 PM

63 characters is the upper limit allowed for a passphrase in standards, although some routers allow 64 characters. ConnMan enforces the 63 limit. IMHO passwords that long are pointless. The exploits for WiFi networks are always about a protocol vulnerability or something in the iimplementation of a specific chip (at silicon level) or a software component in the wireless stack. Unless it's a WEP network (which is easy) no attacker is going to waste their time trying to brute-force the credential, so anything between 12-20 characters is enough.

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