172 lines
5.0 KiB
Bash
172 lines
5.0 KiB
Bash
#!/bin/sh
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# Copyright (c) 2003-2009 by Silvan Calarco <silvan.calarco@mambasoft.it>
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# Copyright (c) 2003-2009,2013 by Davide Madrisan <davide.madrisan@gmail.com>
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# Only meant to be called from ifup.
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# Configure wireless network device options.
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# Valid variables:
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# WIRELESS_ESSID
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# WIRELESS_MODE
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# WIRELESS_ENCMODE:
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# WIRELESS_NWID
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# WIRELESS_CHANNEL
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# WIRELESS_FREQUENCY
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# WIRELESS_AP
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# WIRELESS_FREQ
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# WIRELESS_RATE
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# WIRELESS_ENC
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unset WIRELESS_OPTS WIRELESS_OPTS2
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if [ "$WIRELESS_ESSID" ]; then
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tmpfile=`tempfile 2>/dev/null`
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tmpfile1=`tempfile 2>/dev/null`
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if [ "$tmpfile" ]; then
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ifconfig ${DEVICE} up
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unset vname found_essid
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# Note: iwlist scan essid option does not work with all drivers
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# (see man iwlist) so we split cell information below
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iwlist ${DEVICE} scan essid $WIRELESS_ESSID > $tmpfile
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# Note: sometimes iwlist scan fails with "Device or resource busy",
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# so we try again
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[ -s $tmpfile ] ||
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{ ifconfig ${DEVICE} down
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ifconfig ${DEVICE} up
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iwlist ${DEVICE} scan essid $WIRELESS_ESSID > $tmpfile; }
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cat $tmpfile | \
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while read line; do
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if [ "${line:0:5}" = "Cell " ]; then
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[ "$found_essid" ] && break || > $tmpfile1
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fi
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echo $line >> $tmpfile1
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[ "$line" = "ESSID:\"$WIRELESS_ESSID\"" ] && found_essid=1
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done
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> $tmpfile
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cat $tmpfile1 | \
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while read line; do
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vname=${line/:*}
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if [ "${line:0:4}" = "Cell" ]; then
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vname="${line/* }"
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vval=${line/*Address:}
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vname="Address"
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elif [ "${line/Unknown:}" != "$line" ]; then
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continue
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else
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vname=${line/:*}
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vname=`echo ${vname} | tr ' ' _`
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vname=${vname/_(1)}
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vval=${line/*:}
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fi
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vname=WIRELESS_AUTO_${vname/* }
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vval=${vval/ }
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vval=\"${vval/GHz*}\"
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if [ "$vname" = "WIRELESS_AUTO_Mode" -o \
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"$vname" = "WIRELESS_AUTO_Channel" -o \
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"$vname" = "WIRELESS_AUTO_Address" -o \
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"$vname" = "WIRELESS_AUTO_Frequency" -o \
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"$vname" = "WIRELESS_AUTO_IE" -o \
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"$vname" = "WIRELESS_AUTO_Group_Cipher" -o \
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"$vname" = "WIRELESS_AUTO_Pairwise_Ciphers" -o \
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"$vname" = "WIRELESS_AUTO_Authentication_Suites" ]; then
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echo $vname=$vval >> $tmpfile
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fi
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done
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. $tmpfile
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else
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echo "\
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Warning: unable to create temporary file; skipping wireless autodetection"
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fi
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rm -f $tmpfile $tmpfile1
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fi
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[ "$WIRELESS_ENCMODE" ] || WIRELESS_ENCMODE="open"
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[ "$WIRELESS_MODE" ] && WIRELESS_OPTS="$WIRELESS_OPTS mode $WIRELESS_MODE"
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[ "$WIRELESS_ESSID" ] && WIRELESS_OPTS="$WIRELESS_OPTS essid $WIRELESS_ESSID"
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[ "$WIRELESS_NWID" ] && WIRELESS_OPTS="$WIRELESS_OPTS nwid $WIRELESS_NWID"
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if [ "$WIRELESS_CHANNEL" ]; then
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WIRELESS_OPTS="$WIRELESS_OPTS channel $WIRELESS_CHANNEL"
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elif [ "$WIRELESS_AUTO_Channel" ]; then
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WIRELESS_OPTS="$WIRELESS_OPTS channel $WIRELESS_AUTO_Channel"
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fi
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if [ "$WIRELESS_FREQUENCY" ]; then
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WIRELESS_OPTS="$WIRELESS_OPTS freq $WIRELESS_FREQUENCY"
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elif [ "$WIRELESS_AUTO_Frequency" ]; then
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WIRELESS_OPTS="$WIRELESS_OPTS freq ${WIRELESS_AUTO_Frequency}G"
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fi
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if [ "$WIRELESS_AP" ]; then
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WIRELESS_OPTS2="$WIRELESS_OPTS2 ap $WIRELESS_AP"
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elif [ "$WIRELESS_AUTO_Address" ]; then
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WIRELESS_OPTS2="$WIRELESS_OPTS2 ap $WIRELESS_AUTO_Address"
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fi
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[ "$WIRELESS_FREQ" ] && WIRELESS_OPTS2="$WIRELESS_OPTS2 freq $WIRELESS_FREQ"
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[ "$WIRELESS_RATE" ] && WIRELESS_OPTS2="$WIRELESS_OPTS2 rate $WIRELESS_RATE"
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# Note: WIRELESS_ENC must appear as the last option
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[ "$WIRELESS_ENC" -a "${WIRELESS_AUTO_IE:0:3}" != "WPA" ] &&
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WIRELESS_OPTS="$WIRELESS_OPTS key $WIRELESS_ENCMODE $WIRELESS_ENC"
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if [ "$WIRELESS_ESSID" -o "$WIRELESS_ENC" ]; then
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echo -n "Setting wireless options for ${DEVICE}: "
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ifconfig ${DEVICE} down
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iwconfig ${DEVICE} $WIRELESS_OPTS
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[ "$WIRELESS_OPTS2" ] && iwconfig ${DEVICE} $WIRELESS_OPTS2
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evaluate_retval
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echo
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if [ "${WIRELESS_AUTO_IE:0:3}" = "WPA" -a ! -e /var/run/wpa_supplicant/${DEVICE} ]; then
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echo -n "Setting WPA options for ${DEVICE}: "
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[ "$WIRELESS_AUTO_Authentication_Suites" ] ||
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WIRELESS_AUTO_Authentication_Suites=PSK
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[ "$WIRELESS_AUTO_Pairwise_Ciphers" ] ||
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WIRELESS_AUTO_Pairwise_Ciphers=TKIP
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[ "$WIRELESS_AUTO_Group_Cipher" ] ||
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WIRELESS_AUTO_Group_Cipher=TKIP
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if [ "${WIRELESS_ENC:0:2}" = "s:" ]; then
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WPA_PSK=\"${WIRELESS_ENC/s:}\"
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else
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WPA_PSK=${WIRELESS_ENC}
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fi
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tmpfile1=`tempfile 2>/dev/null`
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cat >> $tmpfile1 << _EOF
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ctrl_interface=/var/run/wpa_supplicant
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network={
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scan_ssid=0
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ssid="$WIRELESS_ESSID"
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proto=WPA
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key_mgmt=WPA-$WIRELESS_AUTO_Authentication_Suites
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pairwise=$WIRELESS_AUTO_Pairwise_Ciphers
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group=$WIRELESS_AUTO_Group_Cipher
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psk=$WPA_PSK
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}
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_EOF
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wpa_supplicant -Dwext -i${DEVICE} -c $tmpfile1 -B
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evaluate_retval
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echo
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rm -f $tmpfile1
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fi
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fi
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