source: npl/internetserver/djbdns/djbdns.SlackBuild @ 8b8e03e

#!/bin/bash
#NEED:bind_tools
#NEED:patch
##NEED:mpc
##DEP:linux_headers

CWD=`pwd`
VERSION=1.05
ROOT=`pwd`
PKGROOT=$ROOT/pkgtmp;
PGM=`ls |grep djbdns|cut -f1,2 -d "."`
PKGSOURCE=`ls djbdns*|grep -v DatuX`
EXT=`ls |grep djbdns|grep tar.gz`
if [ -z $EXT ] ; then
    EXT=tar.bz2
    TARCMD="tar -xjf"
    PGM=`ls djbdns-*.$EXT | sed s/.tar.bz2//`
    else
        EXT=tar.gz
        TARCMD="tar -xzf"
        PGM=`ls djbdns-*.$EXT | sed s/.tar.gz//`
fi
VER=`ls|grep DatuX|cut -f3,4 -d -|sed s/i386-//|sed s/DatuX.tgz//|tail -n1`
(( VER++ ))
SLEXT=i386-"$VER"DatuX.tgz
export MAKEFLAGS="-j1"
if [ -d $ROOT/pkgtmp ] ; then
        rm -rf "$ROOT/pkgtmp"
fi
#mkdir $ROOT/pkgtmp
#mkdir -p $PKGROOT/pkgtmp/usr/bin
cd $ROOT
if [ -d $PGM ] ; then
        rm -rf $PGM
fi

$TARCMD $PGM.$EXT ||exit 1
if [ $? == 1 ] ; then
    echo "#"
    echo "#########################  Untarring file failed  #################################"
    echo "#"
    exit 1
fi
mkdir -p $PKGROOT/usr/bin $PKGROOT/etc/postinst.d $PKGROOT/service $PKGROOT/home/system/{tinydns,dnscache} || exit 1
cd $ROOT/$PGM

#patches must be applied in some order.
cat ../ignoreip-1.05.patch  | patch -p1 || exit 1
cat ../headtail.patch  | patch -p2 || exit 1
cat ../dnsroots.patch  | patch -p1  || exit 1
cat ../dnstracesort.patch | patch -p1 dnstracesort.sh || exit 1
cat ../CVE2009-0858_0001-check-response-domain-name-length.patch | patch -p1 || exit 1
cat ../CVE2008-4392_0001-dnscache-merge-similar-outgoing-queries.patch  | patch -p1 || exit 1
cat ../CVE2008-4392_0002-dnscache-cache-soa-records.patch  | patch -p1 || exit 1
cat ../err.patch | patch -p1 || exit 1
cat ../tinydns-conf.patch | patch -p1 || exit 1

cat conf-home |sed s/"\/local"// >conf-home.new
mv conf-home.new conf-home

#large file support
sed 's/write-strings/write-strings -D_FILE_OFFSET_BITS=64 /' conf-cc -i || exit 1

make || exit 1
find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d :  |while read elf;do cp $elf  $PKGROOT/usr/bin/ ;done
rm $PKGROOT/usr/bin/install
cp $ROOT/$PGM/dnsroots.global $PKGROOT/etc
cp $CWD/post.djbdns $PKGROOT/etc/postinst.d/post.djbdns
chmod +x $PKGROOT/etc/postinst.d/post.djbdns
cp $ROOT/djb_update.pl $PKGROOT/usr/bin
mkdir -p $PKGROOT/service/djb_update
cat >$PKGROOT/service/djb_update/run <<EOF
#!/bin/bash
#in case of a hostname change, the dnscache redirects to 127.0.0.2 should be updated:
cd /usr/webint/htdocs/dns &>/dev/null
php ./djbdns.php update &>/dev/null
cd /home/system/tinydns/root
exec /usr/bin/djb_update.pl
EOF
chmod +x $PKGROOT/service/djb_update/run

#maak alle configfiles eindigend op .new
find $PKGROOT/home/system -follow -type f -exec mv "{}" "{}.new" \; || exit 1

#startstop checking scripts
mkdir -p $PKGROOT/var/dnscache
cp $CWD/start.djbdns $PKGROOT/var/dnscache/start 
cp $CWD/stop.djbdns $PKGROOT/var/dnscache/stop
chmod +x $PKGROOT/var/dnscache/{start,stop} || exit 1

#create fresh root ns file
./dnsip `./dnsqr ns . | awk '/answer:/ { print $5; }' |sort` > $PKGROOT/etc/dnsroots.global || exit 1
if [ `cat $PKGROOT/etc/dnsroots.global | wc -l` -lt 8 ]; then
    echo "Error while downloading dns root servers?"
    exit 1
fi

cd $PKGROOT
NAME=`echo $0|cut -f2 -d'.'`
makepkg -l y -c n $CWD/$NAME.pkg > /dev/null &&
echo $VERSION > $CWD/$NAME.version &&
arch > $CWD/$NAME.arch 

#mv *.tgz ..
#cd $ROOT
#rm -r $PGM $PKGROOT