org.handhelds.familiar/packages/wlan-ng/files/pre-up

   1 #!/bin/sh
   2
   3 case "$METHOD" in loopback) exit 0 ;; esac
   4
   5 #
   6 # This script takes care of bringing up wlan-ng device.
   7 # It is run by ifup, and gets information from the
   8 # /etc/network/interfaces file. It is derived from the
   9 # init.d/wlan script in the wlan-ng distribution
  10
  11 WLANCTL=/sbin/wlanctl-ng
  12 PRIV_GENERATOR=/sbin/nwepgen
  13
  14 if [ ! -x $WLANCTL ] ; then
  15         exit 0
  16 fi
  17
  18 # Detect and act only on linux-wlan-ng interfaces
  19 if [ "$IF_WIRELESS_TYPE" != "wlan-ng" ]; then
  20   exit 0
  21 fi
  22
  23 # Create a lock file; remove on script exit. This is a fairly crummy lock,
  24 # but all it needs to do is prevent hotplug from calling this script,
  25 # which may happen when the module is loaded below. Since it should only
  26 # happen when the module is loaded, I don't need a proper lock.
  27 if [ -e /var/lock/wlan-$IFACE.lock ]; then
  28         exit 0
  29 fi
  30 touch /var/lock/wlan-$IFACE.lock
  31 cleanup () {
  32         rm -f /var/lock/wlan-$IFACE.lock
  33 }
  34 trap cleanup 0
  35
  36 if [ -z "$IF_WIRELESS_MODE" ]; then
  37         IF_WIRELESS_MODE="ad_hoc"
  38 fi
  39
  40 if [ -z "$IF_WLAN_NG_HOSTWEP" ]; then
  41         IF_WLAN_NG_HOSTWEP=false
  42 fi
  43
  44 if [ -z "$IF_WLAN_NG_DEFAULT_KEY_ID" ]; then
  45         IF_WLAN_NG_DEFAULT_KEY_ID=0
  46 fi
  47
  48 if [ -z "$IF_WLAN_NG_EXCLUDE_UNENCRYPTED" ]; then
  49         IF_WLAN_NG_EXCLUDE_UNENCRYPTED=true
  50 fi
  51
  52 if [ -z "$IF_WLAN_NG_PRIV_KEY128" ]; then
  53         IF_WLAN_NG_PRIV_KEY128=false
  54 fi
  55
  56 if [ -z "$IF_WLAN_NG_BCINT" ]; then
  57         IF_WLAN_NG_BCINT=100
  58 fi
  59
  60 if [ -z "$IF_WLAN_NG_BASICRATES" ]; then
  61         IF_WLAN_NG_BASICRATES="2 4"
  62 fi
  63
  64 if [ -z "$IF_WLAN_NG_OPRATES" ]; then
  65         IF_WLAN_NG_OPRATES="2 4 11 22"
  66 fi
  67
  68 if [ -z "$IF_WLAN_NG_AUTHTYPE" ]; then
  69         IF_WLAN_NG_AUTHTYPE="opensystem"
  70 fi
  71
  72 if [ -z "$IF_WIRELESS_CHANNEL" ]; then
  73         IF_WIRELESS_CHANNEL=1
  74 fi
  75
  76 if ! modprobe p80211; then
  77         echo "Failed to load p80211.o." >&2
  78         exit 1
  79 fi
  80
  81 # NOTE: We don't explicitly insmod the card driver here.  The
  82 #  best thing to do is to specify an alias in /etc/modules.conf.
  83 #  Then, the first time we call wlanctl with the named device,
  84 #  the kernel module autoload stuff will take over.
  85 #  But, if you prefer, you could modprobe it here.
  86
  87
  88 # Bring the card up into an operable state.
  89 result=`$WLANCTL $IFACE lnxreq_ifstate ifstate=enable`
  90 if [ $? = 0 ] ; then
  91         eval $result
  92         if [ $resultcode != "success" ]; then
  93                 echo "Failed to enable the device, resultcode=" $resultcode "." >&2
  94                 exit 1
  95         fi
  96 else
  97         echo "Failed to enable the device, exitcode=" $? "." >&2
  98         exit 1
  99 fi
 100
 101 # Set user-specified MIB items.
 102 for i in $IF_WLAN_NG_USER_MIBS; do
 103         result=`$WLANCTL $IFACE dot11req_mibset "mibattribute=$i"`
 104
 105         if [ $? = 0 ] ; then
 106                 eval $result
 107                 if [ $resultcode != "success" ] ; then
 108                         echo "Failed to set user MIB $i." >&2
 109                         exit 1
 110                 fi
 111         else
 112                 echo "Failed to set user MIB $i." >&2
 113                 exit 1
 114         fi
 115 done
 116
 117 if [ "$IF_WIRELESS_ENC" = "on" ]; then
 118         # Set up WEP.
 119         result=`$WLANCTL $IFACE dot11req_mibget mibattribute=dot11PrivacyOptionImplemented`
 120         if [ $? = 0 ] ; then
 121                 eval $result
 122                 eval $mibattribute
 123         else
 124                 echo "mibget failed." >&2
 125                 exit 1
 126         fi
 127
 128         if [ "$dot11PrivacyOptionImplemented" != "true" ]; then
 129                 echo "Cannot enable privacy, dot11PrivacyOptionImplemented=$dot11PrivacyOptionImplemented." >&2
 130                 exit 1
 131         fi
 132
 133         $WLANCTL $IFACE lnxreq_hostwep decrypt=$IF_WLAN_NG_HOSTWEP encrypt=$IF_WLAN_NG_HOSTWEP >/dev/null
 134
 135         $WLANCTL $IFACE dot11req_mibset \
 136                 mibattribute=dot11WEPDefaultKeyID=$IF_WLAN_NG_DEFAULT_KEY_ID \
 137              >/dev/null
 138
 139         $WLANCTL $IFACE dot11req_mibset \
 140                 mibattribute=dot11ExcludeUnencrypted=$IF_WLAN_NG_EXCLUDE_UNENCRYPTED \
 141             >/dev/null
 142
 143         $WLANCTL $IFACE dot11req_mibset \
 144                 mibattribute=dot11PrivacyInvoked=true >/dev/null
 145
 146         if [ -e "$IF_WLAN_NG_KEYFILE" ]; then
 147                 IF_WLAN_NG_PRIV_GENSTR=`cat $IF_WLAN_NG_KEYFILE`
 148         fi
 149         if [ ! -z "$IF_WLAN_NG_PRIV_GENSTR" ]; then
 150                 if [ "$IF_WLAN_NG_PRIV_KEY128" = "false" ]; then
 151                         keys=`$PRIV_GENERATOR "$IF_WLAN_NG_PRIV_GENSTR" 5`
 152                 else
 153                         keys=`$PRIV_GENERATOR "$IF_WLAN_NG_PRIV_GENSTR" 13`
 154                 fi
 155
 156                 knum=0
 157                 for i in $keys; do
 158                         $WLANCTL $IFACE dot11req_mibset \
 159                                 mibattribute=dot11WEPDefaultKey$knum=$i \
 160                              >/dev/null
 161                         knum=$(expr $knum + 1)
 162                 done
 163         else
 164                 $WLANCTL $IFACE dot11req_mibset \
 165                         mibattribute=dot11WEPDefaultKey0=$IF_WLAN_NG_KEY0 \
 166                      >/dev/null
 167                 $WLANCTL $IFACE dot11req_mibset \
 168                         mibattribute=dot11WEPDefaultKey1=$IF_WLAN_NG_KEY1 \
 169                      >/dev/null
 170                 $WLANCTL $IFACE dot11req_mibset \
 171                         mibattribute=dot11WEPDefaultKey2=$IF_WLAN_NG_KEY2 \
 172                      >/dev/null
 173                 $WLANCTL $IFACE dot11req_mibset \
 174                         mibattribute=dot11WEPDefaultKey3=$IF_WLAN_NG_KEY3 \
 175                      >/dev/null
 176         fi
 177 fi
 178
 179 # MAC startup
 180 if [ "$IF_WIRELESS_MODE" = "ad_hoc" ] ||
 181    [ "$IF_WIRELESS_MODE" = "ad-hoc" ]; then
 182         startcmd="$WLANCTL $IFACE dot11req_start "
 183         startcmd="$startcmd ssid=$IF_WIRELESS_ESSID"
 184         startcmd="$startcmd bsstype=independent"
 185         startcmd="$startcmd beaconperiod=$IF_WLAN_NG_BCINT"
 186         startcmd="$startcmd dtimperiod=3"
 187         startcmd="$startcmd cfpollable=false"
 188         startcmd="$startcmd cfpollreq=false"
 189         startcmd="$startcmd cfpperiod=3"
 190         startcmd="$startcmd cfpmaxduration=100"
 191         startcmd="$startcmd probedelay=100"
 192         startcmd="$startcmd dschannel=$IF_WIRELESS_CHANNEL"
 193         j=1
 194         for i in $IF_WLAN_NG_BASICRATES; do
 195                 startcmd="$startcmd basicrate$j=$i"
 196                 j=$(expr $j + 1)
 197         done
 198         j=1
 199         for i in $IF_WLAN_NG_OPRATES; do
 200                 startcmd="$startcmd operationalrate$j=$i"
 201                 j=$(expr $j + 1)
 202         done
 203
 204         results=`$startcmd`
 205         if [ $? = 0 ]; then
 206                 eval $results
 207                 if [ $resultcode != "success" ] ; then
 208                         echo "IBSS not started, resultcode=$resultcode" >&2
 209                         exit 1
 210                 fi
 211         else
 212                 echo FAILED: $startcmd >&2
 213                 exit 1
 214         fi
 215 else
 216         # Infrastructure mode.
 217         results=`$WLANCTL $IFACE lnxreq_autojoin \
 218                 "ssid=$IF_WIRELESS_ESSID" \
 219                 authtype=$IF_WLAN_NG_AUTHTYPE | sed 's/\([^=]*\)=\(.*\)/\1="\2"/'`
 220         if [ $? = 0 ]; then
 221                 eval $results
 222                 if [ ${resultcode:-"failure"} != "success" ]; then
 223                         echo 'error: Autojoin indicated failure!' >&2
 224                         exit 1
 225                 fi
 226         fi
 227 fi