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|
#!/bin/bash
# Helper script to activate/desactivate WLAN from command line
# Usage :
# wifi connect <ssid> <passphrase>
# wifi disconnect <ssid>
# wifi scan
# wifi status
#####################################################
### global vars ###
CONNMAN=/usr/sbin/connmanctl
script=$(basename $0)
configpath=/var/lib/connman # connman config directory
ssid="" # ssid of wifi network to reach
passphrase="" # passphrase of wifi network to reach
service="" # service identifier of the network service to reach
fullservice="" # <ssid><service>
function error() {
echo ERROR: "$@" >&2
cat << EOF >&2
Usage:
$script connect <ssid> [passphrase]
$script disconnect [ssid]
$script scan
$script status
EOF
exit 1
}
function wifi_enable() {
command=$($CONNMAN technologies | grep -A 4 wifi | sed -n '4p')
if [[ $command == *True ]]; then
echo ">>> Wifi is already enabled ... Ok"
else
echo ">>> Enabling wifi ..."
command=$($CONNMAN enable wifi)
if [[ $command == Enabled* ]]; then
echo $command
else
echo ">>> Cannot enable wifi !"
exit 1
fi
fi
}
function wifi_disable() {
$CONNMAN disable wifi
}
function wifi_scan() {
echo -e "\n>>> Scanning for available wifi networks..."
$CONNMAN scan wifi
}
function wifi_connected() {
command=$($CONNMAN technologies | grep -A 4 wifi | sed -n '5p')
if [[ $command == *True ]];then
echo -e "\n>>> Already connected to a wifi network"
return 0
fi
return 1
}
function wifi_status() {
echo -e "\n>>> Wifi status:"
$CONNMAN technologies | grep -A 4 wifi
echo -e "\n>>> Available SSIDs:"
$CONNMAN services | grep wifi_
}
function wifi_config() {
echo -e "\n>>> Setting up wifi connection..."
retries=5
while [ 1 ]; do
$CONNMAN scan wifi
echo "\n>>> Available SSIDs:"
$CONNMAN services | grep wifi_
fullservice=$($CONNMAN services | cut -c 5- | sed 's/ \+ /:/g' | grep "$ssid:")
if [[ -n $fullservice ]]; then
break
fi
retries=$(( retries - 1 ))
if [[ $retries -gt 0 ]]; then
echo "waiting for $ssid to appear..."
sleep 5
continue
fi
echo "Target ssid not found !"
exit 1
done
ssid=$(echo "$fullservice" | awk -F: '{print $1}')
service=$(echo "$fullservice" | awk -F: '{print $2}')
echo "Target ssid found - config is :"
echo "SSID : $ssid"
echo "Service Id : $service"
echo "Passphrase : $passphrase"
cat <<EOF >"$configpath/$ssid.config"
[service_$service]
Name = $ssid
Type = wifi
Passphrase = $passphrase
EOF
echo "Configuration written"
}
function wifi_connect() {
echo -e "\n>>> Performing connection ..."
output=$($CONNMAN connect $service)
if [[ $output == Connected* ]];then
echo "...Ok."
echo $output
else
echo "...connection failed !"
echo $output
wifi_disconnect
echo "Check your SSID or your passphrase"
exit 1
fi
}
function wifi_disconnect() {
if [[ -z "$ssid" ]]; then
$CONNMAN services | cut -c5- | sed 's/ \+ /:/g' | ( while read line; do
ssid=$(cut -f1 -d':' <<<$line)
serv=$(cut -f2 -d':' <<<$line)
if [[ "$serv" =~ ^wifi_ && -f "$configpath/$ssid.config" ]]; then
echo "Disconnecting $serv"
$CONNMAN disconnect $serv
echo "Cleaning config $ssid.config"
rm -rf "$configpath/$ssid.config"
fi
done )
return 0
fi
service=$($CONNMAN services | cut -c 5- | sed 's/ \+ /:/g' | grep "^$ssid:" | awk -F: '{print $2}')
if [[ -z "$service" ]]; then
echo "... unknown service"
rm -rf "$configpath/$ssid.config" # clear config in all cases
return 1
fi
output=$($CONNMAN disconnect $service)
rm -rf "$configpath/$ssid.config" # clear config in all cases
if [[ $output == Disconnected* ]];then
echo "...Ok."
echo $output
else
echo "...disconnection failed !"
echo $output
return 1
fi
}
case $1 in
connect)
ssid=$2
passphrase=$3
[ -z "$ssid" ] && error "No ssid defined !"
wifi_enable
wifi_connected && exit 0
wifi_config
wifi_connect
;;
disconnect)
ssid=$2
wifi_disconnect
wifi_disable
;;
scan)
wifi_enable
wifi_scan
wifi_status
;;
status)
wifi_status
;;
*)
error "Command line doesn't have any option !"
esac
|
