pdnsd.in revision 219732
1252190Srpaulo#!/bin/sh 2252190Srpaulo# Copyright (c) 2010 Roy Marples 3252190Srpaulo# All rights reserved 4252190Srpaulo 5252190Srpaulo# pdnsd subscriber for resolvconf 6252190Srpaulo 7252190Srpaulo# Redistribution and use in source and binary forms, with or without 8252190Srpaulo# modification, are permitted provided that the following conditions 9252190Srpaulo# are met: 10252190Srpaulo# * Redistributions of source code must retain the above copyright 11252190Srpaulo# notice, this list of conditions and the following disclaimer. 12252190Srpaulo# * Redistributions in binary form must reproduce the above 13252190Srpaulo# copyright notice, this list of conditions and the following 14252190Srpaulo# disclaimer in the documentation and/or other materials provided 15252190Srpaulo# with the distribution. 16252190Srpaulo# 17252190Srpaulo# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18252190Srpaulo# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19252190Srpaulo# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20252190Srpaulo# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21252190Srpaulo# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22252190Srpaulo# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23252190Srpaulo# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24252190Srpaulo# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25252190Srpaulo# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26252190Srpaulo# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27252190Srpaulo# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28252190Srpaulo 29252190Srpaulo[ -f "@SYSCONFDIR@"/resolvconf.conf ] || exit 0 30252190Srpaulo. "@SYSCONFDIR@/resolvconf.conf" || exit 1 31252190Srpaulo[ -z "$pdnsd_conf" -a -z "$pdnsd_resolv" ] && exit 0 32252190Srpaulo[ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)" 33252190Srpaulo 34252190Srpaulo: ${pdnsd_restart:=pdnsd-ctl config $pdnsd_conf} 35252190Srpaulosignature="# Generated by resolvconf" 36252190Srpaulosignature_end="# End of resolvconf" 37252190Srpaulo 38252190Srpaulo# We normally use sed to remove markers from a configuration file 39252190Srpaulo# but sed may not always be available at the time. 40252190Srpauloremove_markers() 41252190Srpaulo{ 42252190Srpaulo local m1="$1" m2="$2" x= line= in_marker=0 43252190Srpaulo 44252190Srpaulo shift; shift 45252190Srpaulo if type sed >/dev/null 2>&1; then 46252190Srpaulo sed "/^$m1/,/^$m2/d" $@ 47252190Srpaulo else 48252190Srpaulo for x; do 49252190Srpaulo while read line; do 50252190Srpaulo case "$line" in 51252190Srpaulo "$m1"*) in_marker=1;; 52252190Srpaulo "$m2"*) in_marker=0;; 53252190Srpaulo *) [ $in_marker = 0 ] && echo "$line";; 54252190Srpaulo esac 55252190Srpaulo done < "$x" 56252190Srpaulo done 57252190Srpaulo fi 58252190Srpaulo} 59252190Srpaulo 60252190Srpaulo# Compare two files 61252190Srpaulo# If different, replace first with second otherwise remove second 62252190Srpaulochange_file() 63252190Srpaulo{ 64252190Srpaulo if [ -e "$1" ]; then 65252190Srpaulo if type cmp >/dev/null 2>&1; then 66252190Srpaulo cmp -s "$1" "$2" 67252190Srpaulo elif type diff >/dev/null 2>&1; then 68252190Srpaulo diff -q "$1" "$2" >/dev/null 69252190Srpaulo else 70252190Srpaulo # Hopefully we're only working on small text files ... 71252190Srpaulo [ "$(cat "$1")" = "$(cat "$2")" ] 72252190Srpaulo fi 73252190Srpaulo if [ $? -eq 0 ]; then 74252190Srpaulo rm -f "$2" 75252190Srpaulo return 1 76252190Srpaulo fi 77252190Srpaulo fi 78252190Srpaulo cat "$2" > "$1" 79252190Srpaulo rm -f "$2" 80252190Srpaulo return 0 81252190Srpaulo} 82252190Srpaulo 83252190Srpaulonewresolv="# Generated by resolvconf\n" 84252190Srpaulochanged=false 85252190Srpaulo 86252190Srpauloif [ -n "$pdnsd_resolv" ]; then 87252190Srpaulo for n in $NAMESERVERS; do 88252190Srpaulo newresolv="${newresolv}nameserver $n\n" 89252190Srpaulo done 90252190Srpaulofi 91252190Srpaulo 92252190Srpauloif [ -n "$pdnsd_conf" ]; then 93252190Srpaulo cf="$pdnsd_conf.new" 94252190Srpaulo newconf= 95252190Srpaulo 96252190Srpaulo if [ -z "$pdnsd_resolv" ]; then 97252190Srpaulo newconf="${newconf}server {\n" 98252190Srpaulo newconf="${newconf}\tlabel=resolvconf;\n" 99252190Srpaulo if [ -n "$NAMESERVERS" ]; then 100252190Srpaulo newconf="${newconf}\tip=" 101252190Srpaulo first=true 102252190Srpaulo for n in $NAMESERVERS; do 103252190Srpaulo if $first; then 104252190Srpaulo first=false 105252190Srpaulo else 106252190Srpaulo newconf="${newconf}," 107252190Srpaulo fi 108252190Srpaulo newconf="$newconf$n" 109252190Srpaulo done 110252190Srpaulo newconf="${newconf};\n" 111252190Srpaulo fi 112252190Srpaulo newconf="${newconf}}\n" 113252190Srpaulo fi 114252190Srpaulo 115252190Srpaulo for d in $DOMAINS; do 116252190Srpaulo newconf="${newconf}server {\n" 117252190Srpaulo newconf="${newconf}\tinclude=.${d%%:*}.;\n" 118252190Srpaulo newconf="${newconf}\tpolicy=excluded;\n" 119252190Srpaulo newconf="${newconf}\tip=" 120252190Srpaulo ns="${d#*:}" 121252190Srpaulo while [ -n "$ns" ]; do 122252190Srpaulo newconf="${newconf}${ns%%,*}" 123252190Srpaulo [ "$ns" = "${ns#*,}" ] && break 124252190Srpaulo ns="${ns#*,}" 125252190Srpaulo newconf="${newconf}," 126252190Srpaulo done 127252190Srpaulo newconf="${newconf};\n}\n" 128252190Srpaulo done 129252190Srpaulo 130252190Srpaulo rm -f "$cf" 131252190Srpaulo remove_markers "$signature" "$signature_end" "$pdnsd_conf" > "$cf" 132252190Srpaulo if [ -n "$newconf" ]; then 133252190Srpaulo echo "$signature" >> "$cf" 134252190Srpaulo printf "$newconf" >> "$cf" 135252190Srpaulo echo "$signature_end" >> "$cf" 136252190Srpaulo fi 137252190Srpaulo if change_file "$pdnsd_conf" "$cf"; then 138252190Srpaulo changed=true 139252190Srpaulo fi 140252190Srpaulofi 141252190Srpaulo 142252190Srpauloif [ -n "$pdnsd_resolv" ]; then 143252190Srpaulo if [ ! -f "$pdnsd_resolv" ] || \ 144252190Srpaulo [ "$(cat "$pdnsd_resolv")" != "$(printf "$newresolv")" ] 145252190Srpaulo then 146252190Srpaulo changed=true 147252190Srpaulo printf "$newresolv" >"$pdnsd_resolv" 148252190Srpaulo fi 149252190Srpaulofi 150252190Srpaulo 151252190Srpauloif $changed; then 152252190Srpaulo eval $pdnsd_restart 153252190Srpaulofi 154252190Srpaulo