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Current File : //etc/sysconfig/network/scripts/ifstatus-wireless

#! /bin/bash
#
# Copyright (c) 2005 SUSE LINUX Products GmbH Nuernberg, Germany.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 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 General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA
#
# Author: Joachim Gleissner <jg@suse.de>, 2005
#
# $Id$
#

unset POSIXLY_CORRECT ; set +o posix # we're using non-posix bash features

usage () {
        echo $@
        echo "Usage: if{up,down,status}-wireless [<config>] <interface> [-o <options>]"
        echo ""
        echo "Options are: [on]boot : we are currently booting (or shutting down)"
        echo "             hotplug  : we are handling a hotplug event"
        echo "All other or wrong options are silently ignored."
        exit $R_USAGE
}

######################################################################
# change the working direcory and source some common files
#
R_INTERNAL=1      # internal error, e.g. no config or missing scripts
cd /etc/sysconfig/network || exit $R_INTERNAL
test -f ./config && . ./config
test -f scripts/functions && . scripts/functions || exit $R_INTERNAL

######################################################################
# check arguments and how we are called (in case of links)
#
SCRIPTNAME=${0##*/}
debug $*
ACTION=${SCRIPTNAME#if}
ACTION=${ACTION%%-wireless}
case "${ACTION}" in
    up|down|status) ;;
    check) exit $R_SUCCESS ;;
    *) usage
esac
case "$1" in ""|-h|*help*) usage; esac
CONFIG=$1
shift
if [ -n "$1" -a "$1" != "-o" ] ; then
	INTERFACE=$1
else
	INTERFACE=$CONFIG
fi
shift
test "$1" = "-o" && shift
OPTIONS=$@
MODE=manual
while [ $# -gt 0 ]; do
        case $1 in
                boot|onboot) MODE=onboot ;;
                hotplug)     MODE=hotplug ;;
                quiet)       be_quiet_has_gone ;;
                debug)       DEBUG=yes ;;
                *)           debug "unknown option $1 ignored" ;;
        esac
        shift
done


######################################################################
# check presence of global configuration file and source it
#
test -f ./wireless && . ./wireless
# ifcfg-* is more important and fragile then wireless
if [ -f ./ifcfg-$CONFIG ] ; then
   . ./ifcfg-$CONFIG
elif [ "$ACTION" != down ] ; then
   err_mesg "could not find configuration file ifcfg-$CONFIG"
fi


######################################################################
# get the interface and check if it is available and wireless
# skip check on action "down", possibly running wpa_supplicant needs
# to be shut down even when the interface is already gone
#
# $WIRELESS=yes/no can be set in a config file if there is no other way to
# find out. If it is empty we use the type we got from ifup/down (INTERFACETYPE)
if [ "$WIRELESS" != yes -a "$INTERFACETYPE" != wlan ]; then
    info_mesg "'$INTERFACE' is not wireless, exiting"
    exit 0
fi
if [ "${ACTION}" != "down" ]; then
    if ! is_iface_available  ${INTERFACE} ; then
        test "$ACTION" != status && logerror "interface ${INTERFACE} is not available"
        exit $R_NODEV
    fi
    DRIVER="`( cd -P /sys/class/net/$INTERFACE/device/driver;
               echo ${PWD##*/}; )`"
fi

######################################################################
# helper functions
#
get_network_count()
{
    count=0
    for i in {1..9} ; do
        W="`eval echo \\$WIRELESS_AUTH_MODE_$i`"
        if [ -n "`eval echo $\"$W\"`" ]; then
            count=$((count+1))
        fi
    done
    return $count
}

get_first_index()
{
    test -n "$WIRELESS_AUTH_MODE" && return 0
    for i in 0 1 2 3 4 5 6 7 8 9 ; do
        eval W="\$WIRELESS_AUTH_MODE_$i"
        test -n "$W" && return $i
    done
    return 255
}

get_next_index()
{
    local i=$1
    while [ $i -lt 9 ]; do
        i=$((i+1))
        eval W="\$WIRELESS_AUTH_MODE_$i"
        test -n "$W" && return $i
    done
    return 255
}

need_wpa_supplicant()
{
    case "$WIRELESS_AUTH_MODE" in
    wpa-*|WPA-*|psk|PSK|eap|EAP)
        return 0
    esac
    # check whether we have more than one network configured
    get_network_count
    if [ $? -gt 1 ]; then
        return 0
    fi
    return 1
}

applicable_wpa_supplicant()
{
    test "$WPA_DRIVER" = "unsupported" && return 1
    case "$WIRELESS_ESSID" in
        any|"") return 1;;
    esac
    case "$WIRELESS_MODE" in
        Managed|managed|"") return 0;;
    esac
    return 1
}



######################################################################
# using wpa_supplicant for non-WPA connections often makes trouble
# so we do not prefer it if not explicitly set
#
test -z "$PREFER_WPA_SUPPLICANT" && PREFER_WPA_SUPPLICANT=yes
info_mesg "prefer wpa_supplicant: $PREFER_WPA_SUPPLICANT"

######################################################################
# check for needed tools
#
for i in iwconfig hexdump sed awk ; do
if [ -z "`type -p $i`" ] ; then
    err_mesg "cannot find '$i', please install"
    exit $R_ERROR
fi
done

if [ -z "`type -p wpa_supplicant`" ]; then
    if need_wpa_supplicant ; then
        err_mesg "cannot find 'wpa_supplicant', please install"
        exit $R_ERROR
    fi
    PREFER_WPA_SUPPLICANT=no
fi

run_iw_tool() {
        local COMMAND MESSAGE
        RETVAL=$R_SUCCESS
        test -z "$3" && return
        info_mesg "run_iw_tool()" "$@"
        case $1 in 
                config|spy|priv) IWTOOL=iw${1} ;;
                *) exit $R_INTERNAL ;;
        esac
        shift
        MESSAGE=`$IWTOOL $INTERFACE "$@" 2>&1` || RETVAL=$?
        test -z "$MESSAGE" && return
        err_mesg "command '$IWTOOL $INTERFACE $*' returned\n $MESSAGE"
}

RETVAL=$R_SUCCESS

wlanctl()
{
        local MESSAGE
        test -z "$1" && return
        info_mesg "running wlanctl-ng $INTERFACE $@"
        MESSAGE=`wlanctl-ng $INTERFACE "$@" 2>&1` || RETVAL=$?
        info_mesg $MESSAGE
}

ascii_to_hex()
{
        if [ -z "${1:7:1}" ]; then
                echo -n ${1#s:*} | hexdump -e '5/1 "%2x"' | sed -e 's/ /0/g'
        elif [ -z "${1:15:1}" ]; then
                echo -n ${1#s:*} | hexdump -e '13/1 "%2x"' | sed -e 's/ /0/g'
        elif [ -z "${1:18:1}" ]; then
                echo -n ${1#s:*} | hexdump -e '16/1 "%2x"' | sed -e 's/ /0/g'
        elif [ -z "${1:21:1}" ]; then
                echo -n ${1#s:*} | hexdump -e '19/1 "%2x"' | sed -e 's/ /0/g'
        elif [ -z "${1:31:1}" ]; then
                echo -n ${1#s:*} | hexdump -e '29/1 "%2x"' | sed -e 's/ /0/g'
        else
                err_mesg "Unsupported WEP key length"
                exit $R_ERROR
        fi
}

generate_keys()
{
        test -z "$WIRELESS_KEY_0" && WIRELESS_KEY_0="$WIRELESS_KEY"
        if [ -z "$WIRELESS_KEY_0" -a  \
                 -z "$WIRELESS_KEY_1" -a \
                 -z "$WIRELESS_KEY_2" -a \
                 -z "$WIRELESS_KEY_3" -a \
                 "$WIRELESS_AUTH_MODE" != "psk" -a \
                 "$WIRELESS_AUTH_MODE" != "wpa-psk" ]; then
                message "`printf "    %-9s warning: using NO encryption" $INTERFACE`"
                # message "warning: using NO encryption"
                ENCRYPTION=no
                return
        fi
        for i in 0 1 2 3 ; do
                eval K=\$WIRELESS_KEY_$i
                eval WIRELESS_KEY_$i="$(print_key "$K" $WIRELESS_KEY_LENGTH)"
        done
        ENCRYPTION=yes
}

format_key()
{
        # key has usually format XXXX-XXXX-XX [...]
        echo $1 | tr -d '-' | awk '{ KEY=$0 ;
                if (length()>10) for (i=0;i<26-length();i++) KEY=KEY"0"
                for (i=1;i<length(KEY)-1;i+=2) FKEY=FKEY substr(KEY, i, 2)":"
                FKEY=FKEY substr(KEY, i, 2)
                print FKEY }' 
}

setup_iwdev()
{
        # Mode need to be first : some settings apply only in a specific mode !
        run_iw_tool config mode $WIRELESS_MODE
        # Regular stuff...
        while read OPT ARG; do
                ${OPT:+run_iw_tool config "$OPT" "$ARG"}
        done <<-EOL
nick $WIRELESS_NICK
nwid $WIRELESS_NWID
freq $WIRELESS_FREQ
channel $WIRELESS_CHANNEL
sens $WIRELESS_SENS
rate $WIRELESS_RATE
rts $WIRELESS_RTS
frag $WIRELESS_FRAG
$WIRELESS_IWCONFIG_OPTIONS
EOL
        # set encryption key(s)
        run_iw_tool config key off
        # special hack for madwifi
        test "$DRIVER" = "ath_pci" && run_iw_tool priv authmode 1
        if [ -z "$WIRELESS_SEC_MODE" ]; then
                case "$WIRELESS_AUTH_MODE" in
                shared|sharedkey|restricted)
                        WIRELESS_SEC_MODE="restricted"
                        # special hack for madwifi
                        test "$DRIVER" = "ath_pci" && run_iw_tool priv authmode 2
                        ;;
                open|opensystem|no-encryption|"") WIRELESS_SEC_MODE="open";;
                esac
        fi
        if [ -n "$WIRELESS_KEY_0" -a \
             -z "$WIRELESS_KEY_1" -a \
             -z "$WIRELESS_KEY_2" -a \
             -z "$WIRELESS_KEY_3" ]; then
                # some drivers (at least madwifi) do not like multiple keys
                # so we do not use that setting method when we have only one
                run_iw_tool config key $WIRELESS_SEC_MODE $WIRELESS_KEY_0
        elif [ -n "$WIRELESS_KEY_0" ]; then
                ARG="key $WIRELESS_SEC_MODE $WIRELESS_KEY_0 [1]"
                for i in 1 2 3 ; do 
                        eval K=\$WIRELESS_KEY_$i
                        test -n "$K" && ARG="$ARG key $K [$((i+1))]"
                done
                run_iw_tool config $ARG
                if [ $RETVAL -ne 0 ]; then
                        err_mesg "setting encryption key FAILED, aborting interface setup"
                        exit $R_ERROR
                fi
                test -z "$WIRELESS_DEFAULT_KEY" && WIRELESS_DEFAULT_KEY=0
                run_iw_tool config key [$((WIRELESS_DEFAULT_KEY+1))]
        fi
        run_iw_tool spy $WIRELESS_IWSPY_OPTIONS
        run_iw_tool priv $WIRELESS_IWPRIV_OPTIONS
        test -z "$WIRELESS_ESSID" && WIRELESS_ESSID="any"
        run_iw_tool config essid "$WIRELESS_ESSID"

        # set AP address when requested in $WIRELESS_AP.
        # At last mac80211 based drivers need this as signal to start
        # scanning for an appropriate cell, so we set it to 'any' when
        # $WIRELESS_AP is empty in Managed and Ad-Hoc modes, except we
        # have the madwifi (ath_pci) driver, which does not like it...
        # It is required to set up the interface before doing that.
        case "$WIRELESS_MODE" in
                ([M,m]anaged|[A,a]d-[H,h]oc|"")
                    case "${DRIVER}" in
                        (wl)
                            # bnc#555774, wl driver does not like it
                        ;;
                        (ath_pci)
                            test -z "$WIRELESS_AP" && WIRELESS_AP='off'
                        ;;
                        (*)
                            test -z "$WIRELESS_AP" && WIRELESS_AP='any'
                        ;;
                    esac
                ;;
        esac
        if test -n "$WIRELESS_AP" ; then
            ip link set up dev $INTERFACE 2>/dev/null
            run_iw_tool config ap "$WIRELESS_AP"
        fi
}

setup_wlanngdev()
{
        if [ -z "`type -p wlanctl-ng`" ] ; then
            err_mesg "cannot find 'wlanctl-ng', please install package 'wlan-ng'"
            exit $R_ERROR
        fi
        wlanctl lnxreq_ifstate ifstate=enable
        wlanctl dot11req_reset setdefaultmib=false
        test "$WIRELESS_ESSID" = "any"  && WIRELESS_ESSID=""
        if [ "$ENCRYPTION" = "no" ]; then
                wlanctl dot11req_mibset mibattribute=dot11PrivacyInvoked=false
                wlanctl dot11req_mibset mibattribute=dot11ExcludeUnencrypted=false
                AUTHTYPE=opensystem
        else
                result=`wlanctl-ng $INTERFACE dot11req_mibget mibattribute=dot11PrivacyOptionImplemented`
                if [ $? = 0 ] ; then
                        eval $result
                        eval $mibattribute
                else
                        err_mesg "Could not query device: $result"
                        exit $R_ERROR
                fi
                if [ "$dot11PrivacyOptionImplemented" = "false" ]; then
                        err_mesg "Could not set encryption, device does not support it"
                        exit $R_ERROR
                fi
                wlanctl dot11req_mibset mibattribute=dot11PrivacyInvoked=true
                test -z "$WIRELESS_DEFAULT_KEY" && WIRELESS_DEFAULT_KEY=0
                wlanctl dot11req_mibset mibattribute=dot11WEPDefaultKeyID=$WIRELESS_DEFAULT_KEY
                for i in 0 1 2 3 ; do
                        eval K=\$WIRELESS_KEY_$i
                        if [ -n "$K" ]; then
                                wlanctl dot11req_mibset mibattribute=dot11WEPDefaultKey$i=$( format_key $K )
                                test $RETVAL -ne 0 && 
                                        { err_mesg "Setting encryption key failed, aborting interface setup" ;
                                          exit $R_ERROR ; }
                        fi
                done
                case "$WIRELESS_AUTH_MODE" in
                        shared|sharedkey|restricted) 
                        wlanctl dot11req_mibset mibattribute=dot11ExcludeUnencrypted=true
                        AUTHTYPE=sharedkey
                        ;;
                        open|opensystem|no-encryption|"")
                        wlanctl dot11req_mibset mibattribute=dot11ExcludeUnencrypted=false
                        AUTHTYPE=opensystem
                        ;;
                esac
        fi
        case "$WIRELESS_MODE" in
                [M,m]anaged)
                wlanctl lnxreq_autojoin ssid="$WIRELESS_ESSID" authtype=$AUTHTYPE
                ;;
                [A,a]d-hoc)
                test -z "$WIRELESS_ESSID" && WIRELESS_ESSID="linux"
                test -z "$WIRLEESS_CHANNEL" && WIRELESS_CHANNEL=7
                wlanctl dot11req_start \
                                ssid=$WIRELESS_ESSID \
                                bsstype=independent \
                                beaconperiod=100 \
                                dtimperiod=3 \
                                cfpollable=false \
                                cfpollreq=false \
                                cfpperiod=3 \
                                cfpmaxduration=100 \
                                probedelay=100 \
                                dschannel=$WIRELESS_CHANNEL \
                                basicrate1=2 \
                                basicrate2=4 \
                                operationalrate1=2 \
                                operationalrate2=4 \
                                operationalrate3=11 \
                                operationalrate4=22
                ;;
                [M,m]aster|[R,r]epeater|[S,s]econdary)
                err_mesg "Mode $WIRELESS_MODE is not supported yet for wlanng devices"
                exit $R_ERROR
                ;;
        esac
}

old_setup()
{
    info_mesg "warning: debug mode logs your encryption keys!"
    generate_keys
    if [ -z "$WIRELESS_MODE" ]; then
        info_mesg "WIRELESS_MODE is unset, using Managed"
        WIRELESS_MODE="Managed"
    fi

    # Set the wireless regulatory domain country code when configured
    if [ "x$WIRELESS_REGULATORY_DOMAIN" != x ] ; then
        if [ -z "`type -p iw`" ] ; then
            err_mesg "cannot set wireless regulatory domain, please install 'iw' utility"
        else
            CMD="iw reg set $WIRELESS_REGULATORY_DOMAIN"
            OUT=`$CMD 2>&1` ; RET=$?
            if [ "$RET" -ne "0" -o "x$OUT" != x ] ; then
                err_mesg "command '$CMD' returned\n $OUT"
            fi
        fi
    fi

    # some drivers seem to have extensions like wlan-ng,
    # although they do not
    case "$DRIVER" in

        prism2_*)
        setup_wlanngdev
        ;;

        *)
        setup_iwdev
        ;;
    esac
}

print_key()
{
    test -z "$1" && return
    K="$1"
    L="$2"
    test -z "$2" && L=104
    if [ -n "$K" ]; then
        if [ ${K:0:1} = "s" ]; then
        # we are using ascii key representation (iwconfig method)
        echo "$(ascii_to_hex "$K")"
        elif [ ${K:0:1} = "h" ]; then
            case $L in
            40|64)
                echo "$(lwepgen "${K:2}" | head -n 1 | tr -d ':')"
                ;;
            104|128)
                echo "$(lwepgen -s "${K:2}" | head -n 1 | tr -d ':')"
                ;;
            *)
                err_mesg "Unsupported key length $L in hash mode"
                exit $R_ERROR
                ;;
            esac
        else
            echo "${K//[:-]/}"
        fi
    fi
}


######################################################################
# helper to print a line of the wpa_supplicant.conf network block
# format print_network_line tag value suffix [default_value]
print_network_line()
{
    TAG="$1"
    eval VALUE="\$$2$3"
    test -z "$VALUE" && VALUE="$4"
    test -n "$VALUE" && echo "  $TAG=\"$VALUE\""
}

print_network_line_unquoted()
{
    TAG="$1"
    eval VALUE="\$$2$3"
    test -z "$VALUE" && VALUE="$4"
    test -n "$VALUE" && echo "  $TAG=$VALUE"
}

print_network_block()
{
    SUFFIX="_$1"
    # special case for index 0 (may go away in the future)
    test "$1" = "0"  && SUFFIX=""
    echo "network={"
    if [ "`eval echo \\$WIRELESS_HIDDEN_SSID$SUFFIX`" = "no" ]; then
        echo "  scan_ssid=0"
    else
        echo "  scan_ssid=1"
    fi
    print_network_line ssid WIRELESS_ESSID "$SUFFIX"
    print_network_line_unquoted priority WIRELESS_PRIORITY "$SUFFIX"
    case "`eval echo \\$WIRELESS_AUTH_MODE$SUFFIX`" in
    open|no-encryption)
        echo "  key_mgmt=NONE"
        for i in 0 1 2 3 ; do
            KEY="`eval print_key \\"\\$WIRELESS_KEY_$i$SUFFIX\\" \\$WIRELESS_KEY_LENGTH$SUFFIX`"
            test -n "$KEY" && echo "  wep_key$i=$KEY"
        done
        print_network_line_unquoted wep_tx_keyidx WIRELESS_DEFAULT_KEY "$SUFFIX"
        ;;
    shared|sharedkey)
        echo "  key_mgmt=NONE"
        for i in 0 1 2 3 ; do
            KEY="`eval print_key \\"\\$WIRELESS_KEY_$i$SUFFIX\\" \\$WIRELESS_KEY_LENGTH$SUFFIX`"
            test -n "$KEY" && echo "  wep_key$i=$KEY"
        done
        print_network_line_unquoted wep_tx_keyidx WIRELESS_DEFAULT_KEY "$SUFFIX"
        echo "  auth_alg=SHARED"
        ;;
    *psk|*PSK)
        echo "  key_mgmt=WPA-PSK"
        eval L=\$WIRELESS_WPA_PSK$SUFFIX
        if [ ${#L} = 64 ]; then
            echo "  psk=$L"
        else
            echo "  psk=\"$L\""
        fi
        if [ "$WIRELESS_AP_SCANMODE" = "2" ]; then
            print_network_line_unquoted proto WIRELESS_WPA_PROTO "$SUFFIX" WPA
            print_network_line_unquoted pairwise WIRELESS_CIPHER_PAIRWISE "$SUFFIX" TKIP
            print_network_line_unquoted group WIRELESS_CIPHER_GROUP "$SUFFIX" TKIP
        else
            print_network_line_unquoted proto WIRELESS_WPA_PROTO "$SUFFIX"
            print_network_line_unquoted pairwise WIRELESS_CIPHER_PAIRWISE "$SUFFIX"
            print_network_line_unquoted group WIRELESS_CIPHER_GROUP "$SUFFIX"
        fi
        ;;
     eap|EAP|wpa-eap|WPA-EAP)
        echo "  key_mgmt=WPA-EAP"
        eval EAP_MODE=\$WIRELESS_EAP_MODE$SUFFIX
        if [ -n "$EAP_MODE" ]; then
            print_network_line_unquoted eap WIRELESS_EAP_MODE "$SUFFIX"
        else
            echo "  eap=TTLS PEAP TLS"
        fi
        if [ "$WIRELESS_AP_SCANMODE" = "2" ]; then
            print_network_line_unquoted proto WIRELESS_WPA_PROTO "$SUFFIX" WPA
            print_network_line_unquoted pairwise WIRELESS_CIPHER_PAIRWISE "$SUFFIX" TKIP
            print_network_line_unquoted group WIRELESS_CIPHER_GROUP "$SUFFIX" TKIP
        else
            print_network_line_unquoted proto WIRELESS_WPA_PROTO "$SUFFIX"
            print_network_line_unquoted pairwise WIRELESS_CIPHER_PAIRWISE "$SUFFIX"
            print_network_line_unquoted group WIRELESS_CIPHER_GROUP "$SUFFIX"
        fi
        print_network_line identity WIRELESS_WPA_IDENTITY "$SUFFIX"
        print_network_line password WIRELESS_WPA_PASSWORD "$SUFFIX"
        print_network_line anonymous_identity WIRELESS_WPA_ANONID "$SUFFIX"
        print_network_line ca_cert WIRELESS_CA_CERT "$SUFFIX"
        print_network_line client_cert WIRELESS_CLIENT_CERT "$SUFFIX"
        print_network_line private_key WIRELESS_CLIENT_KEY "$SUFFIX"
        print_network_line private_key_passwd WIRELESS_CLIENT_KEY_PASSWORD "$SUFFIX"
        eval PEAPVER=\$WIRELESS_PEAP_VERSION$SUFFIX
        if [ -n "$PEAPVER" ]; then
            echo "  phase1=\"peaplabel=0 peapver=$PEAPVER\""
        else
            echo "  phase1=\"peaplabel=0\""
        fi

        eval EAP_AUTH=\$WIRELESS_EAP_AUTH$SUFFIX
        if [ -n "$EAP_AUTH" ]; then
            echo "  phase2=\"auth=$EAP_AUTH\""
        fi
        ;;
    esac
    echo "}"
}

print_wpa_conf()
{
    # header
    echo "ctrl_interface=/var/run/wpa_supplicant"
    test -n "$WIRELESS_AP_SCANMODE" && echo "ap_scan=$WIRELESS_AP_SCANMODE"
    test -n "$WIRELESS_REGULATORY_DOMAIN" && echo "country=$WIRELESS_REGULATORY_DOMAIN"

    get_first_index
    local index=$?

    while [ $index -ne 255 ]; do
        print_network_block $index
        get_next_index $index
        index=$?
    done
}

start_wpa_supplicant()
{
    if [ -e /var/run/wpa_supplicant-$INTERFACE.conf ]; then
        if [ -f /var/run/wpa_supplicant/${INTERFACE}.pid ]; then
            pid=$( cat /var/run/wpa_supplicant/${INTERFACE}.pid)
        else
            pid=$(pgrep -f ".*wpa_supplicant-$INTERFACE.conf.*")
        fi
        wpa_dead=y
        if [ -n "$pid" ]; then
            kill -0 $pid && wpa_dead=n
        fi
        case "$wpa_dead" in
            y)
                info_mesg "Stale wpa_supplicant-$INTERFACE.conf found, removing"
                rm -f /var/run/wpa_supplicant-$INTERFACE.conf
                ;;
            n)
                message "`printf "    %-9s warning: wpa_supplicant already running on interface" $INTERFACE`"
                return
                ;;
        esac
    fi
    if [ -n "$WIRELESS_WPA_CONF" ]; then
        if [ -e "$WIRELESS_WPA_CONF" ]; then
            WPA_SUPP_CONF="$WIRELESS_WPA_CONF"
        else
            err_mesg "Unable to setup wpa (could not open $WIRELESS_WPA_CONF)"
            exit $R_ERROR
        fi
    else
        WPA_SUPP_CONF="/var/run/wpa_supplicant-$INTERFACE.conf"
        umask 0077
        print_wpa_conf > $WPA_SUPP_CONF
    fi
    if [ "$DEBUG" = "yes" -o "$DEBUG" = "wireless" ]; then
        SUPPARGS="-P/var/run/wpa_supplicant/${INTERFACE}.pid"
        SUPPARGS="$SUPPARGS ${WIRELESS_WPA_DEBUG_OPTION:--dddt} 2>&1 | logger &"
    else
        SUPPARGS="-P/var/run/wpa_supplicant/${INTERFACE}.pid -B"
    fi
    mkdir -p /var/run/wpa_supplicant
    message "`printf "    %-9s starting wpa_supplicant" $INTERFACE`"
    eval wpa_supplicant -i$INTERFACE -c$WPA_SUPP_CONF -D$WPA_DRIVER $SUPPARGS
}

kill_wpa_supplicant()
{
    if [ -f /var/run/wpa_supplicant/${INTERFACE}.pid ]; then
        pid=$( cat /var/run/wpa_supplicant/${INTERFACE}.pid)
    else
        pid=$(pgrep -f ".*wpa_supplicant-$INTERFACE.conf.*")
    fi
    if [ -z "$pid" ]; then
        info_mesg "No wpa_supplicant running on interface $INTERFACE"
        return
    fi
    kill $pid
    rm -f /var/run/wpa_supplicant-$INTERFACE.conf
}

show_status()
{
    if [ -f /var/run/wpa_supplicant/${INTERFACE}.pid ]; then
        wpa_cli -i$INTERFACE status
    else
        iwconfig $INTERFACE
    fi
}
set_default_wpa_driver()
{
    if [ "$WPA_DRIVER" = "unsupported" ]; then
        message "`printf "    %-9s warning: WPA configured, but is untested" $INTERFACE`"
        message "`printf "    %-9s warning: with this device" $INTERFACE`"
        info_mesg "Using WPA drivers 'nl80211,wext' for interface $INTERFACE."
        info_mesg "When you notice problems with the 'nl80211' driver, set "
        info_mesg "e.g. WIRELESS_WPA_DRIVER='wext' and file a bug report."
        info_mesg "See drivers list in the /usr/sbin/wpa_supplicant -h output"
        WPA_DRIVER='nl80211,wext'
    fi
}

case $ACTION in
    up)
        test -n "$WIRELESS_WPA_DRIVER"    && \
        WPA_DRIVER="$WIRELESS_WPA_DRIVER" || \
        case "${DRIVER}" in
            prism54)
                WPA_DRIVER=prism54
                PREFER_WPA_SUPPLICANT=no
                ;;
            rt61|rt73)
                WPA_DRIVER=ralink
                ;;
            ath_pci)
                WPA_DRIVER=wext
                ;;
            ipw2200|ipw2100)
                WPA_DRIVER=wext
                ;;
            ndiswrapper|*.sys)
                WPA_DRIVER=wext
                ;;
            rt2860*|rt2870*|r8187se)
                WPA_DRIVER=wext
                ;;
            r8192*|r8712*|vt665*|wl)
                WPA_DRIVER=wext
                ;;
            adm8211|at76*|ar9170*)
                WPA_DRIVER=nl80211
                ;;
            ath5k|ath9k)
                WPA_DRIVER=nl80211
                ;;
            b43|b43legacy|ssb)
                WPA_DRIVER=nl80211
                ;;
            hostap_*)
                WPA_DRIVER=nl80211
                ;;
            iwlagn|ipw3945)
                WPA_DRIVER=nl80211
                ;;
            libertas*)
                WPA_DRIVER=nl80211
            ;;
            mwl8k|p54pci|p54usb)
                WPA_DRIVER=nl80211
                ;;
            rt2400pci|rt2500usb|rt2500pci)
                WPA_DRIVER=nl80211
                ;;
            rt61pci|rt73usb|rtl818*)
                WPA_DRIVER=nl80211
                ;;
            wl1251|wl1271|zd1211rw)
                WPA_DRIVER=nl80211
                ;;
            *)
                WPA_DRIVER=unsupported
                PREFER_WPA_SUPPLICANT=no
                ;;
        esac
        if need_wpa_supplicant ; then
            info_mesg "configuration requires wpa_supplicant"
            set_default_wpa_driver
            start_wpa_supplicant
        elif [ "$PREFER_WPA_SUPPLICANT" = "yes" ]; then
            if applicable_wpa_supplicant ; then
                set_default_wpa_driver
                start_wpa_supplicant
            else
                info_mesg "setting up $INTERFACE w/o wpa_supplicant"
                old_setup
            fi
        else
            old_setup
        fi
        ;;
    down)
        kill_wpa_supplicant
        ;;
    status)
        if is_iface_up $INTERFACE ; then
            # do not show status output on boot, this may log
            # the WEP key in the boot log
            test "$MODE" = "onboot" || show_status
            RETVAL=$R_SUCCESS
        else
            RETVAL=$R_NOTRUNNING
        fi
        ;;
esac

exit $RETVAL

ACC SHELL 2018