LinuxQuestions.org - Init script for ndiswrapper with WPA support

Dear Folks,

I created an init script for Fedora Core 4 that should work on all Red Hat distros. It loads the ndiswrapper driver, initializes the wlan interface, and starts wpa_supplicant. You will need to put the script in

/etc/rc.d/init.d

and run

# chkconfig --add wlan
# chkconfig --level 345 wlan on

to get it to start at boot. It will start right after network is started and will stop right before network is stopped. You can control the wlan script using the usual Red Hat syntax:

# service wlan start
# service wlan stop
# service wlan restart

You may need to massage the script to handle any idiosyncrasies of your setup (e.g. change wlan0 to wlan1). E-mail me if you have an questions.

Code:

#!/bin/bash

#

# wlan                This shell script takes care of starting and stopping

#                the wlan interface.

#

# Copyright: (C) 2007 David Cullen  dcullen@kerneldriver.org

#

# License: GPLv3

#

# chkconfig: - 11 89

# description: wlan starts the wlan interface.



# Source function library.

. /etc/init.d/functions



# Source networking configuration.

. /etc/sysconfig/network



# Check that networking is up.

[ ${NETWORKING} = "no" ] && exit 0



RETVAL=0

INTERFACE="wlan0"

LOGFILE="/var/log/${INTERFACE}.log"



wlanup()

{

        echo "Loading ndiswrapper..." > ${LOGFILE}

        if ! modprobe ndiswrapper >> ${LOGFILE} 2>&1 ; then

                echo "Could not load ndiswrapper" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Configuring ${INTERFACE}..." >> ${LOGFILE}

        if ! ifconfig ${INTERFACE} 192.168.1.251 netmask 255.255.255.0 broadcast 192.168.1.255 >> ${LOGFILE} 2>&1 ; then

                echo "Could not configure ${INTERFACE}" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Bringing up ${INTERFACE}..." >> ${LOGFILE}

        if ! ifconfig wlan0 up >> ${LOGFILE} 2>&1 ; then

                echo "Could not bring up ${INTERFACE}" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Sleeping for one second..." >> ${LOGFILE}

        if ! sleep 1 >> ${LOGFILE} 2>&1 ; then

                echo "Could not sleep" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Configuring WPA..." >> ${LOGFILE}

        if ! /usr/local/sbin/wpa_supplicant -Dwext -i${INTERFACE} -c/etc/wpa_supplicant.conf -B 2>&1 >> ${LOGFILE} ; then

                echo "Could not configure WPA" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Configuring default route..." >> ${LOGFILE}

        if ! route add -net default gw 192.168.1.254 dev ${INTERFACE} >> ${LOGFILE} 2>&1 ; then

                echo "Could not configure default route" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        return $RETVAL

}



wlandown()

{

        echo "Stopping WPA..." >> ${LOGFILE}

        if ! killproc wpa_supplicant >> ${LOGFILE} 2>&1 ; then

                echo "Could not stop WPA" >> ${LOGFILE}

                return 1;

        fi

        echo "Bringing down ${INTERFACE}..." >> ${LOGFILE}

        if ! ifconfig ${INTERFACE} down >> ${LOGFILE} 2>&1 ; then

                echo "Could not bring down ${INTERFACE}" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        echo "Unloading ndiswrapper..." >> ${LOGFILE}

        if ! rmmod ndiswrapper >> ${LOGFILE} 2>&1 ; then

                echo "Could not unload ndiswrapper" >> ${LOGFILE}

                return 1;

        fi

        echo "Done." >> ${LOGFILE}

        return $RETVAL

}



start()

{

        echo -n $"Bringing up ${INTERFACE}: "

        wlanup

        RETVAL=$?

        [ $RETVAL -eq 0 ] && echo_success || echo_failure

        echo

        return $RETVAL

}



stop()

{

        echo -n $"Bringing down ${INTERFACE}: "

        wlandown

        RETVAL=$?

        [ $RETVAL -eq 0 ] && echo_success || echo_failure

        echo

        return $RETVAL

}



# See how we were called.

case "$1" in

  start)

        start

        ;;

  stop)

        stop

        ;;

  restart|reload)

        stop

        start

        RETVAL=$?

        ;;

  *)

        echo $"Usage: $0 {start|stop|restart|reload}"

        exit 1

esac



exit $RETVAL