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pepowlan

最初に

pepowlanとはPepoLinux-0.57以降に収録されている無線LANアダプタをWEPで簡易的に動作させるちょっとしたプログラムです。

PepoLinuxに収録されているプログラムを必要とするので単独では動作しませんが、無線LANアダプタを試験的に利用するプログラムに応用出来ると思います。

更新履歴

2012.3.20：ファーストリリース

 #!/bin/sh
 # licence GPLv2 ; this scripts was designed by IZAMUKARERA 2012.3.19 update 2012.3.20
 # pepowlan for daemon contorl Wireless Lan.
 # configure file /etc/wlan/wlan.conf
 PATH=$PATH:/usr/local/bin:/usr/local/sbin
 CONF=/etc/wlan/wlan.conf
 WORK=/var/tmp/pepowlan
 prog=pepowlan
 pidfile=/var/run/$prog.pid
 echo -en $$ >$pidfile
 WAIT=3000
 error () {
   [ -e $WORK ] && rm -f $WORK
   [ ! -z $WLAN_YES ] && ifconfig wlan0 down 2>&1
   exit 0
 }
 trap error SIGKILL SIGTERM SIGHUP SIGINT
 
 while true ;do
   iwconfig >$WORK 2>&1
   WLAN=`cat $WORK |grep wlan|wc -l`
   [ $WLAN != "0" ] && WLAN_YES="yes" || WLAN_YES="no"
   while [ $WLAN_YES = "yes" ];do
     iwconfig >$WORK 2>&1
     WLAN=`cat $WORK |grep wlan|grep off|wc -l`
     WLAN_BITRATE=`cat $WORK |grep "Bit Rate"|wc -l`
     if [ $WLAN != "0" ] || [ $WLAN_BITRATE = "0" ];then
       WLAN="down"
     else
       WLAN="up"
       if [ ! -z $GATEWAY ];then
         DEFAULT=`ip route |grep default|wc -l`
         [ $DEFAULT != "0" ] && ip route del default
         msleep $WAIT
         ip route add default via $GATEWAY >/dev/null 2>&1 || break
       fi
     fi
     if [ $WLAN = "down" ];then
       if [ ! -e $CONF ];then
         break
       else
         . $CONF
         msleep $WAIT
         [ ! -z $ESSID ] && iwconfig wlan0 essid $ESSID >/dev/null 2>&1 || break
         [ ! -z  $ENCKEY ] && iwconfig wlan0 enc $ENCKEY >/dev/null 2>&1 || break
         msleep $WAIT
         if [ ! -z $IP ] && [ $IP = "dhcp" ];then
           killall dhclient >/dev/null 2>&1
           msleep $WAIT
           dhclient wlan0 >/dev/null 2>&1
         fi
         if [ ! -z $IP ] && [ $IP != "dhcp" ];then
           [ ! -z $IP ] && ifconfig wlan0 $IP up >/dev/null 2>&1 || break
           msleep $WAIT
           if [ ! -z $NAMESERVER ];then
             cat>/etc/resolv.conf<<END
 ; generated by /usr/local/bin/pepowlan script
 search localdomain
 nameserver $NAMESERVER
 END
           fi
         fi
       fi
     fi
     [ -e $WORK ] && rm -f $WORK
     msleep 10000
   done
   [ -e $WORK ] && rm -f $WORK
   msleep 10000
 done

設定ファイル

[root@ ]# cat /etc/wlan/wlan.conf 
# Wireless Lan configure file was designed by IZAMUKARERA pepolinux 2012.3.20
# set essid
ESSID="pepochan"
# wepkey set
ENCKEY="0123456"
# ip address set or dhcp
#IP="192.168.1.2/24"
IP="dhcp"
# set gateway
GATEWAY="192.168.1.1"
# set nameserver
NAMESERVER="192.168.1.1"