# Uses wpa_supplicant to check for association to a network
# wpa_check interface [timeout]
wpa_check()
{
    local timeout=0 INTERFACE=$1 TIMEOUT=${2:-15}
    
    while [[ $timeout -lt $TIMEOUT ]]; do
        ( # Sometimes wpa_supplicant isn't ready so silence errors for 2s only to avoid hiding real errors
        if [[ $timeout -lt 2 ]]; then
            eval `wpa_cli status 2> /dev/null|grep wpa_state`
        else
            eval `wpa_cli status|grep wpa_state` 
        fi
        [[ "$wpa_state" = "COMPLETED" ]] 
        ) && return 0
        sleep 1
        let timeout++
    done
    echo "$wpa_state"
    wpa_cli terminate >/dev/null 2>&1
    return 1 
}

start_wpa() 
{
    INTERFACE="$1"; WPA_CONF="$2"; WPA_OPTS="$3"

    wpa_supplicant -B -P/var/run/wpa_supplicant_${INTERFACE}.pid -i"${INTERFACE}" -c "$WPA_CONF" $WPA_OPTS    
    sleep 1
    
    if [[ ! -f "/var/run/wpa_supplicant_${INTERFACE}.pid" ]]; then
        return 1
    fi
}

stop_wpa()
{
    wpa_cli terminate &> /dev/null 
    if [[ -f /var/run/wpa_supplicant_$1.pid ]]; then
        kill $(cat /var/run/wpa_supplicant_$1.pid) &>/dev/null &
    fi
}

# vim: set ts=4 et sw=4 ft=sh: