hotspot_ynh/conf/iw_multissid

#!/bin/bash

# Wifi Hotspot app for YunoHost 
# Copyright (C) 2015 Julien Vaubourg <julien@vaubourg.com>
# Contribute at https://github.com/labriqueinternet/hotspot_ynh
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
# 
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

phy=$(iw "${1}" info | grep wiphy | awk '{ print $NF }')
multissid=$(iw "phy${phy}" info | grep -A1 'valid interface combinations' | tail -n1 | sed 's/.*{.*AP.*}\s<=\s\(.*\),.*/\1/')

if [ -z "${multissid}" ]; then
  echo 1
else
  echo $multissid
fi