From c8bd91e283cbd05db34de7ba40b8669e0e1093f7 Mon Sep 17 00:00:00 2001
From: MrMM <mm@freifunk-aachen.de>
Date: Sun, 11 Oct 2015 22:39:35 +0200
Subject: [PATCH] Add some comments
---
files/lib/gluon/ssid-changer/ssid-changer.sh | 36 ++++++++++----------
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/files/lib/gluon/ssid-changer/ssid-changer.sh b/files/lib/gluon/ssid-changer/ssid-changer.sh
index 9f4f266..80a2f82 100755
--- a/files/lib/gluon/ssid-changer/ssid-changer.sh
+++ b/files/lib/gluon/ssid-changer/ssid-changer.sh
@@ -12,19 +12,19 @@ LOWER_LIMIT='45' #Below this limit the offline SSID will be used
# 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 - ${#OFFLINE_PREFIX} ) / 2 ))
- SKIP=$(( ${#NODENAME} - $HALF ))
+ HALF=$(( (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$NODENAME"
+ OFFLINE_SSID="$OFFLINE_PREFIX$NODENAME" #greate we are able to use the full nodename in the offline ssid
fi
#Is there an active Gateway?
-GATEWAY_TQ=`batctl gwl | grep "^=>" | awk -F'[()]' '{print $2}'| tr -d " "`
+GATEWAY_TQ=`batctl gwl | grep "^=>" | awk -F'[()]' '{print $2}'| tr -d " "` #Grep the Connection Quality of the Gateway which is currently used
if [ $GATEWAY_TQ -gt $UPPER_LIMIT ];
then
echo "Gateway TQ is $GATEWAY_TQ node is online"
- for HOSTAPD in $(ls /var/run/hostapd-phy*); do
+ for HOSTAPD in $(ls /var/run/hostapd-phy*); do #Check status for all physical devices
CURRENT_SSID=`grep "^ssid=$ONLINE_SSID" $HOSTAPD | cut -d"=" -f2`
if [ $CURRENT_SSID == $ONLINE_SSID ]
then
@@ -35,7 +35,7 @@ then
CURRENT_SSID=`grep "^ssid=$OFFLINE_SSID" $HOSTAPD | cut -d"=" -f2`
if [ $CURRENT_SSID == $OFFLINE_SSID ]
then
- logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $ONLINE_SSID"
+ logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $ONLINE_SSID" #Write Info to Syslog
sed -i s/^ssid=$CURRENT_SSID/ssid=$ONLINE_SSID/ $HOSTAPD
HUP_NEEDED=1 # HUP here would be to early for dualband devices
else
@@ -46,28 +46,28 @@ fi
if [ $GATEWAY_TQ -lt $LOWER_LIMIT ];
then
echo "Gateway TQ is $GATEWAY_TQ node is considered offline"
- for HOSTAPD in $(ls /var/run/hostapd-phy*); do
+ for HOSTAPD in $(ls /var/run/hostapd-phy*); do #Check status for all physical devices
CURRENT_SSID=`grep "^ssid=$OFFLINE_SSID" $HOSTAPD | cut -d"=" -f2`
if [ $CURRENT_SSID == $OFFLINE_SSID ]
then
echo "SSID $CURRENT_SSID is correct, noting to do"
HUP_NEEDED=0
break
- fi
- CURRENT_SSID=`grep "^ssid=$ONLINE_SSID" $HOSTAPD | cut -d"=" -f2`
- if [ $CURRENT_SSID == $ONLINE_SSID ]
- then
- logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $OFFLINE_SSID"
- sed -i s/^ssid=$ONLINE_SSID/ssid=$OFFLINE_SSID/ $HOSTAPD
- HUP_NEEDED=1 # HUP here would be to early for dualband devices
- else
+ fi
+ CURRENT_SSID=`grep "^ssid=$ONLINE_SSID" $HOSTAPD | cut -d"=" -f2`
+ if [ $CURRENT_SSID == $ONLINE_SSID ]
+ then
+ logger -s -t "gluon-offline-ssid" -p 5 "TQ is $GATEWAY_TQ, SSID is $CURRENT_SSID, change to $OFFLINE_SSID" #Write Info to Syslog
+ sed -i s/^ssid=$ONLINE_SSID/ssid=$OFFLINE_SSID/ $HOSTAPD
+ HUP_NEEDED=1 # HUP here would be to early for dualband devices
+ else
echo "There is something wrong, did not find SSID $ONLINE_SSID or $OFFLINE_SSID"
- fi
+ fi
done
fi
-if [ $GATEWAY_TQ -ge $LOWER_LIMIT -a $GATEWAY_TQ -le $UPPER_LIMIT ];
+if [ $GATEWAY_TQ -ge $LOWER_LIMIT -a $GATEWAY_TQ -le $UPPER_LIMIT ]; #This is just get a clean run if we are in-between the grace periode
echo "TQ is $GATEWAY_TQ, do nothing"
- HUP_NEEDED=9
+ HUP_NEEDED=0
if [ $HUP_NEEDED == 1 ]; then
--
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