main/djbdns: periodic script to update zone hints

This also splits the djbdns to djbdns-common that contains the
few utilities needed by the periodic script. Minor fix to init.d
script included also.
Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>

main/djbdns/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=djbdns
 pkgver=1.05
-pkgrel=32
+pkgrel=33
 pkgdesc="Excellent high-performance DNS services"
 url="http://cr.yp.to/djbdns.html"
 license="public-domain"
 depends=
-subpackages="tinydns dnscache"
+subpackages="djbdns-common tinydns dnscache"
 source="http://cr.yp.to/djbdns/$pkgname-$pkgver.tar.gz
 	headtail.patch
 	dnsroots.patch
@@ -20,6 +20,7 @@ source="http://cr.yp.to/djbdns/$pkgname-$pkgver.tar.gz
 	dnscache.pre-install
 	dnscache.initd
 	dnscache.confd
+	dnscache.monthly
 	"
 
 build() {
@@ -44,9 +45,19 @@ build() {
 	mkdir -p "$pkgdir"/usr/share/doc/djbdns
 }
 
+common() {
+	pkgdesc="Base utilities of djbdns"
+	replaces="djbdns"
+
+	mkdir -p "$subpkgdir"/usr/bin
+	mv "$pkgdir"/usr/bin/dnsq "$subpkgdir"/usr/bin
+	mv "$pkgdir"/usr/bin/dnsip "$subpkgdir"/usr/bin
+}
+
 tinydns() {
 	pkgdesc="A small and secure DNS server"
 	install=tinydns.pre-install
+
 	mkdir -p "$subpkgdir"/usr/bin "$subpkgdir"/etc/tinydns \
 		"$subpkgdir"/var/cache/tinydns
 	mv "$pkgdir"/usr/bin/tinydns* "$subpkgdir"/usr/bin
@@ -59,6 +70,8 @@ tinydns() {
 dnscache() {
 	pkgdesc="A recursive resolver"
 	install=dnscache.pre-install
+	depends=djbdns-common
+
 	mkdir -p "$subpkgdir"/usr/bin \
 		"$subpkgdir"/etc/dnscache/ip \
 		"$subpkgdir"/etc/dnscache/servers
@@ -71,8 +84,10 @@ dnscache() {
 		"$subpkgdir"/etc/init.d/dnscache
 	install -D -m644 "$srcdir"/dnscache.confd \
 		"$subpkgdir"/etc/conf.d/dnscache
+	install -D -m755 "$srcdir"/dnscache.monthly \
+		"$subpkgdir"/etc/periodic/monthly/dnscache-hints-refresh
 }
-	
+
 md5sums="3147c5cd56832aa3b41955c7a51cbeb2  djbdns-1.05.tar.gz
 0d2adaf9f1626043e8702b825cdccdd6  headtail.patch
 7565048ebc981238879122c7f88cc143  dnsroots.patch
@@ -81,8 +96,9 @@ adb6745606cae593eb5ea6870fc27bd4  djbdns-1.05-jumbo-josb.patch
 c7be73fe2fb4ae02d5096fa2c1f55a68  1.05-errno.patch
 1292500c04baba3995d9753fe40fdc94  1.05-response.patch
 7695bf50559c09798ec852b578ac8698  tinydns.pre-install
-3f4cd61c41f760c3007a8b09a4da091f  tinydns.initd
+fe48165a920cf843ceb9a4ee50bf74c0  tinydns.initd
 7dcf6674c07d46c736b3c25d9c92384a  tinydns.confd
 e09c3a6ba6917e16f4736ab5c070dbe9  dnscache.pre-install
-ec15af30819b9e146f86223753b367a0  dnscache.initd
-e2938593277d7a87806e70e145a90c3f  dnscache.confd"
+e5cada3b032da84c4a0e41ef8b3108cb  dnscache.initd
+2b3d02e88f70603c760bf368ab3ed636  dnscache.confd
+6253f44f042fc5aa31fd182780d9853c  dnscache.monthly"

main/djbdns/dnscache.confd

@@ -20,4 +20,6 @@ IP=127.0.0.1
 # FORWARDONLY - servers/@ are parent caches, not root servers
 #FORWARDONLY=
 
+# UPDATEHINTS - refresh zone hints
+UPDATEHINTS=1
 

main/djbdns/dnscache.initd

@@ -17,8 +17,8 @@ depend() {
 # Main program
 
 start() {
-	UID=$( grep dnscache /etc/passwd | cut -f3 -d: )
-	GID=$( grep dnscache /etc/group | cut -f3 -d: )
+	UID=$(id -u dnscache)
+	GID=$(id -g dnscache)
 	
 	ebegin "Starting dnscache"
 	if [ -z "$UID" ] || [ -z "$GID" ]; then

main/djbdns/dnscache.monthly

+#!/bin/sh
+
+if [ -f ./etc/conf.d/dnscache ]; then
+	. /etc/conf.d/dnscache
+fi
+
+if [ -z "$UPDATEHINTS" ]; then
+	exit 0
+fi
+
+cd /etc/dnscache/servers
+NEEDRESTART=
+ZONES=`ls /etc/dnscache/servers`
+for ZONEFILE in $ZONES; do
+	# Convert symlinks to copies, so we can update it
+	ZONE="$ZONEFILE"
+	if [ -L $ZONEFILE ]; then
+		DST="`readlink "$ZONEFILE"`"
+		cp -f "$DST" "$ZONEFILE"
+	fi
+
+	if [ "$ZONE" == "@" ]; then
+		ZONE="."
+	fi
+
+	if [ "$ZONE" != "." -o "$FORWARDONLY" = "" ]; then
+		TMPF=`mktemp -t`
+	
+		# Refresh zone info
+		dnsqr ns $ZONE | awk '/^answer: ./ { print $5 }' | sort -u | xargs dnsip > $TMPF
+
+		grep "^$" $TMPF 1> /dev/null
+		if [ $? != 0 ]; then
+			cmp -s $ZONEFILE $TMPF
+			if [ "$?" != 0 ]; then
+				NEEDRESTART=yes
+				cat $TMPF > $ZONEFILE
+			fi
+		fi
+		rm $TMPF
+	fi
+done
+
+if [ "$NEEDRESTART" ] && /etc/init.d/dnscache --quiet status; then
+	/etc/init.d/dnscache restart
+fi
+
+exit 0

main/djbdns/tinydns.initd

@@ -29,8 +29,8 @@ fi
 # Main program
 reload() {
 	local rc opwd="$opwd"
-	UID=$( grep tinydns /etc/passwd | cut -f3 -d: )
-	GID=$( grep tinydns /etc/group | cut -f3 -d: )
+	UID=$(id -u tinydns)
+	GID=$(id -g tinydns)
 
 	# Create the $ROOT directory if necessary
 	if [ ! -d "$ROOT" ]; then