diff --git a/files/lib/gluon/ssid-changer/ssid-changer.sh b/files/lib/gluon/ssid-changer/ssid-changer.sh index d0b46c948b90cb8f0ec2813b09cc681ca4c434f3..22d5f83b8b050a78cd0a2840dfb8ba0eafd1de3b 100755 --- a/files/lib/gluon/ssid-changer/ssid-changer.sh +++ b/files/lib/gluon/ssid-changer/ssid-changer.sh @@ -1,23 +1,33 @@ #!/bin/sh +# at first some Definitions: +ONLINE_SSID=$(uci get wireless.client_radio0.ssid -q) +: ${ONLINE_SSID:="FREIFUNK"} # if for whatever reason ONLINE_SSID is NULL +OFFLINE_PREFIX='FF_OFFLINE_' # use something short to leave space for the nodename + +# Generate an Offline SSID with the first and last part of the nodename to allow owner to recognise wich node is down +NODENAME=`uname -n` +if [ ${#NODENAME} -gt $((30 - ${#OFFLINE_PREFIX})) ] ; then # 32 would be possible as well + HALF=$(( (28 - ${#OFFLINE_PREFIX} ) / 2 )) # calculate the length of the first part of the node identifier in the offline-ssid + SKIP=$(( ${#NODENAME} - $HALF )) # jump to this charakter for the last part of the name + OFFLINE_SSID=$OFFLINE_PREFIX${NODENAME:0:$HALF}...${NODENAME:$SKIP:${#NODENAME}} # use the first and last part of the nodename for nodes with long name +else + OFFLINE_SSID="$OFFLINE_PREFIX$NODENAME" # great! we are able to use the full nodename in the offline ssid +fi # maximum simplyfied, no more ttvn rating -check=$(batctl gwl -H|grep -v "gateways in range"|wc -l) -name=$(nodename status|tail -c 21) -offline="FF_OFFLINE_" -default="FREIFUNK" -offi=$offline$name +CHECK=$(batctl gwl -H|grep -v "gateways in range"|wc -l) -if [ $check -eq 0 ] ; then - if [ "$(uci get wireless.client_radio0.ssid)" == "$offi" ] ; then echo "$0 - still on $offi" ; exit 0 ; fi - echo "$0 change ssid to $offi" | logger - uci set wireless.client_radio0.ssid="$offi" - sed -i s/^ssid=$default/ssid=$offi/ /var/run/hostapd-phy0.conf - killall -HUP hostapd +if [ $CHECK -eq 0 ] ; then + if [ "$(uci get wireless.client_radio0.ssid)" == "$OFFLINE_SSID" ] ; then echo "$0 - still on $OFFLINE_SSID" ; exit 0 ; fi + echo "$0 change ssid to $OFFLINE_SSID" | logger + uci set wireless.client_radio0.ssid="$OFFLINE_SSID" + sed -i s/^ssid=$ONLINE_SSID/ssid=$OFFLINE_SSID/ /var/run/hostapd-phy0.conf + killall -HUP hostapd fi -if [ $check -gt 0 ] ; then - if [ "$(uci get wireless.client_radio0.ssid)" == "$default" ] ; then echo "$0 - still on $default" ; exit 0 ; fi - echo "$0 change ssid to $default"| logger - uci set wireless.client_radio0.ssid="$default" - sed -i s/^ssid=$offi/ssid=$default/ /var/run/hostapd-phy0.conf - killall -HUP hostapd +if [ $CHECK -gt 0 ] ; then + if [ "$(uci get wireless.client_radio0.ssid)" == "$ONLINE_SSID" ] ; then echo "$0 - still on $ONLINE_SSID" ; exit 0 ; fi + echo "$0 change ssid to $ONLINE_SSID"| logger + uci set wireless.client_radio0.ssid="$ONLINE_SSID" + sed -i s/^ssid=$OFFLINE_SSID/ssid=$ONLINE_SSID/ /var/run/hostapd-phy0.conf + killall -HUP hostapd fi