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#!/bin/sh
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2
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COMMAND=$(basename $0 .sh)
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WLDIR=/var/tmp/univnautes-sp-whitelists/
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# lock to avoid concurrent updates
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LOCK=/var/run/univnautes-sp-$COMMAND.lock
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if [ -r $LOCK ]
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then
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PID=`cat $LOCK`
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echo "$COMMAND locked by $LOCK"
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ps waux | grep "$PID" | grep $COMMAND | grep -vq grep && exit
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echo "... but PID $PID is not a $COMMAND, continue"
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fi
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unlock() {
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rm -f $LOCK
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exit
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}
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trap unlock INT TERM EXIT
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echo $$ > $LOCK
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## real start
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log() {
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logger -p local4.info -t sp/update-whitelists "$*"
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}
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rm -rf $WLDIR
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cd /usr/local/univnautes/sp
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./manage.py prepare-whitelists
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32
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cd $WLDIR
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for wl in *
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do
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. ${wl}/conf.sh
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log "download whitelist $CODENAME from $URL"
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if [ -r ${wl}/cacert.pem ]
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then
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CHECK="--ca-certificate=${WLDIR}/${wl}/cacert.pem"
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else
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CHECK="--no-check-certificate"
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log "warn: --no-check-certificate for whitelist $CODENAME"
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fi
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wget --quiet --tries=1 --timeout=10 $CHECK -O ${wl}/whitelist $URL
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RET=$?
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if [ $RET -ne 0 ]
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then
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rm -f ${wl}/whitelist
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log "warn: ERROR while downloading $URL"
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fi
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done
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# concat all whitelists
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cat $WLDIR/*/whitelist | \
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grep -v "\(^[[:space:]]*#\)\|\(^[[:space:]]*$\)" | \
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tr -d '
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' | \
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sed 's#\(^[^/]*$\)#\1/32#' | \
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sort -u > $WLDIR/all
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61
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# computes differences between the whitelist and the actual ipfw table
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for ctx in $(/usr/local/sbin/ipfw_context -l | tail -n +2 | cut -f1 -d:); do
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WL=/var/tmp/ipfw-table42-$ctx
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/sbin/ipfw -x $ctx table 42 list | cut -f1 -d" " | sort -u > $WL-actual
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cat $WLDIR/all $WL-actual | sort | uniq -d > $WL-common
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cat $WLDIR/all $WL-common | sort | uniq -u > $WL-add
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cat $WL-actual $WL-common | sort | uniq -u > $WL-delete
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for i in `cat $WL-add`
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do
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log "$ctx: add $i"
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/sbin/ipfw -x $ctx -q table 42 add $i
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done
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for i in `cat $WL-delete`
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do
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log "$ctx: delete $i"
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/sbin/ipfw -x $ctx -q table 42 delete $i
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done
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done
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