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#!/bin/bash
# Need bash because we use ${foo/bar/baz} feature
#
# Script to update the resolver list for pdnsd
#
# N.B.: Resolvconf may run us even if pdnsd is not running.
#
# Assumption: On entry, PWD contains the resolv.conf-type files
#
# Depends: resolvconf (>= 1.14)
#
# Requires server section in /etc/pdnsd.conf with label="resolvconf"
#
# Licensed under the GNU GPL. See /usr/share/common-licenses/GPL.
#
# History
# May 2004 - June 2004: Written by Thomas Hood <jdthood@yahoo.co.uk>
set -e
[ -x /usr/sbin/pdnsd-ctl ] || exit 0
[ -x /lib/resolvconf/list-records ] || exit 1
[ -e /var/cache/pdnsd/pdnsd.status ] || exit 0
PATH=/bin:/sbin
uniquify()
{
RSLT=""
while [ "$1" ] ; do
for E in $RSLT ; do
[ "$1" = "$E" ] && { shift ; continue 2 ; }
done
RSLT="${RSLT:+$RSLT
}$1"
shift
done
}
server=$(/usr/sbin/pdnsd-ctl status|sed -ne '/^Global:$/,/^Server.*:$/s/.*Server ip.*: \(.*\)$/\1/p')
if test "$server" = "0.0.0.0"; then server="127.0.0.1"; fi
uniquify "`cat $(/lib/resolvconf/list-records) /dev/null \
| sed -n -e 's/^[[:space:]]*nameserver[[:space:]]\+//p' \
| grep -v '^'$server'$'`"
if [ -n "$RSLT" ] ; then
OUTPUT="$(/usr/sbin/pdnsd-ctl server resolvconf up "$RSLT" || :)"
else
OUTPUT="$(/usr/sbin/pdnsd-ctl server resolvconf down || :)"
fi
# Convert newlines to spaces
set -f # Disable pathname expansion
OUTPUT="$(echo $OUTPUT)"
OUTPUT="${OUTPUT/Opening socket \/var\/cache\/pdnsd\/pdnsd.status Succeeded}"
[ -z "$OUTPUT" ] || echo "$OUTPUT"
exit 0
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