/contrib/openresolv/dnsmasq.in
https://bitbucket.org/freebsd/freebsd-head/ · Autoconf · 127 lines · 85 code · 9 blank · 33 comment · 27 complexity · afaf13977dd7cf4ac5ff7fac31e7d6d6 MD5 · raw file
- #!/bin/sh
- # Copyright (c) 2007-2009 Roy Marples
- # All rights reserved
- # dnsmasq subscriber for resolvconf
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions
- # are met:
- # * Redistributions of source code must retain the above copyright
- # notice, this list of conditions and the following disclaimer.
- # * Redistributions in binary form must reproduce the above
- # copyright notice, this list of conditions and the following
- # disclaimer in the documentation and/or other materials provided
- # with the distribution.
- #
- # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- [ -f "@SYSCONFDIR@"/resolvconf.conf ] || exit 0
- . "@SYSCONFDIR@/resolvconf.conf" || exit 1
- [ -z "$dnsmasq_conf" -a -z "$dnsmasq_resolv" ] && exit 0
- [ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)"
- NL="
- "
- : ${dnsmasq_pid:=/var/run/dnsmasq.pid}
- [ -s "$dnsmasq_pid" ] || dnsmasq_pid=/var/run/dnsmasq/dnsmasq.pid
- : ${dnsmasq_service:=dnsmasq}
- : ${dnsmasq_restart:=@RESTARTCMD ${dnsmasq_service}@}
- newconf="# Generated by resolvconf$NL"
- newresolv="$newconf"
- # Using dbus means that we never have to restart the daemon
- # This is important as it means we should not drop DNS queries
- # whilst changing DNS options around. However, dbus support is optional
- # so we need to validate a few things first.
- # Check for DBus support in the binary
- dbus=false
- : ${dbus_pid:=/var/run/dbus/dbus.pid}
- [ -s "$dbus_pid" ] || dbus_pid=/var/run/dbus.pid
- [ -s "$dbus_pid" ] || dbus_pid=/var/run/dbus/pid
- if [ -s "$dbus_pid" -a -s "$dnsmasq_pid" ]; then
- if dnsmasq --version 2>/dev/null | \
- grep -q "^Compile time options.*[[:space:]]DBus[[:space:]]"
- then
- # Sanity - check that dnsmasq and dbus are running
- if kill -0 $(cat "$dbus_pid") 2>/dev/null && \
- kill -0 $(cat "$dnsmasq_pid") 2>/dev/null
- then
- dbus=true
- newconf="$newconf$NL# Domain specific servers will"
- newconf="$newconf be sent over dbus${NL}enable-dbus$NL"
- fi
- fi
- fi
- for n in $NAMESERVERS; do
- newresolv="${newresolv}nameserver $n$NL"
- done
- dbusdest=
- for d in $DOMAINS; do
- dn="${d%%:*}"
- ns="${d#*:}"
- while [ -n "$ns" ]; do
- if $dbus; then
- SIFS=${IFS-y} OIFS=$IFS
- IFS=.
- set -- ${ns%%,*}
- num="0x$(printf %02x $1 $2 $3 $4)"
- if [ "$SIFS" = yi ]; then
- unset IFS
- else
- IFS=$OIFS
- fi
- dbusdest="$dbusdest uint32:$(printf %u $num)"
- dbusdest="$dbusdest string:$dn"
- else
- newconf="${newconf}server=/$dn/${ns%%,*}$NL"
- fi
- [ "$ns" = "${ns#*,}" ] && break
- ns="${ns#*,}"
- done
- done
- changed=false
- if [ -n "$dnsmasq_conf" ]; then
- if [ ! -f "$dnsmasq_conf" ] || \
- [ "$(cat "$dnsmasq_conf")" != "$(printf %s "$newconf")" ]
- then
- changed=true
- printf %s "$newconf" >"$dnsmasq_conf"
- fi
- fi
- if [ -n "$dnsmasq_resolv" ]; then
- if [ -f "$dnsmasq_resolv" ]; then
- if [ "$(cat "$dnsmasq_resolv")" != "$(printf %s "$newresolv")" ]
- then
- changed=true
- printf %s "$newresolv" >"$dnsmasq_resolv"
- fi
- else
- # dnsmasq polls this file so no need to set changed=true
- printf %s "$newresolv" >"$dnsmasq_resolv"
- fi
- fi
- if $changed; then
- eval $dnsmasq_restart
- fi
- if $dbus; then
- $changed || kill -HUP $(cat "$dnsmasq_pid")
- # Send even if empty so old servers are cleared
- dbus-send --system --dest=uk.org.thekelleys.dnsmasq \
- /uk/org/thekelleys/dnsmasq uk.org.thekelleys.SetServers \
- $dbusdest
- fi