2 # Copyright (c) 2007-2009 Roy Marples
5 # dnsmasq subscriber for resolvconf
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # * Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # * Redistributions in binary form must reproduce the above
13 # copyright notice, this list of conditions and the following
14 # disclaimer in the documentation and/or other materials provided
15 # with the distribution.
17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 [ -f "@SYSCONFDIR@"/resolvconf.conf
] ||
exit 0
30 .
"@SYSCONFDIR@/resolvconf.conf" ||
exit 1
31 [ -z "$dnsmasq_conf" -a -z "$dnsmasq_resolv" ] && exit 0
32 [ -z "$RESOLVCONF" ] && eval "$(@PREFIX@/sbin/resolvconf -v)"
34 : ${dnsmasq_pid:=/var/run/dnsmasq.pid}
35 : ${dnsmasq_restart:=@RESTARTCMD dnsmasq@}
36 newconf
="# Generated by resolvconf\n"
39 # Using dbus means that we never have to restart the daemon
40 # This is important as it means we should not drop DNS queries
41 # whilst changing DNS options around. However, dbus support is optional
42 # so we need to validate a few things first.
43 # Check for DBus support in the binary
45 : ${dbus_pid:=/var/run/dbus/dbus.pid}
46 [ -s "$dbus_pid" ] || dbus_pid
=/var
/run
/dbus.pid
47 [ -s "$dbus_pid" ] || dbus_pid
=/var
/run
/dbus
/pid
48 if [ -s "$dbus_pid" -a -s "$dnsmasq_pid" ]; then
49 if dnsmasq
--version 2>/dev
/null | \
50 grep -q "^Compile time options.*[[:space:]]DBus[[:space:]]"
52 # Sanity - check that dnsmasq and dbus are running
53 if kill -0 $
(cat "$dbus_pid") 2>/dev
/null
&& \
54 kill -0 $
(cat "$dnsmasq_pid") 2>/dev
/null
57 newconf
="$newconf\n# Domain specific servers will"
58 newconf
="$newconf be sent over dbus\nenable-dbus\n"
63 for n
in $NAMESERVERS; do
64 newresolv
="${newresolv}nameserver $n\n"
71 while [ -n "$ns" ]; do
73 SIFS
=${IFS-y} OIFS
=$IFS
76 num
="0x$(printf "%02x
" $1 $2 $3 $4)"
77 if [ "$SIFS" = yi
]; then
82 dbusdest
="$dbusdest uint32:$(printf "%u
" $num)"
83 dbusdest
="$dbusdest string:$dn"
85 newconf
="${newconf}server=/$dn/${ns%%,*}\n"
87 [ "$ns" = "${ns#*,}" ] && break
93 if [ -n "$dnsmasq_conf" ]; then
94 if [ ! -f "$dnsmasq_conf" ] || \
95 [ "$(cat "$dnsmasq_conf")" != "$(printf "$newconf")" ]
98 printf "$newconf" >"$dnsmasq_conf"
101 if [ -n "$dnsmasq_resolv" ]; then
102 if [ -f "$dnsmasq_resolv" ]; then
103 if [ "$(cat "$dnsmasq_resolv")" != "$(printf "$newresolv")" ]
106 printf "$newresolv" >"$dnsmasq_resolv"
109 # dnsmasq polls this file so no need to set changed=true
110 printf "$newresolv" >"$dnsmasq_resolv"
115 eval $dnsmasq_restart
118 $changed ||
kill -HUP $
(cat "$dnsmasq_pid")
119 # Send even if empty so old servers are cleared
120 dbus-send
--system --dest=uk.org.thekelleys.dnsmasq \
121 /uk
/org
/thekelleys
/dnsmasq uk.org.thekelleys.SetServers \