Remove building with NOCRYPTO option
[minix.git] / external / bsd / openresolv / dist / dnsmasq.in
blob1b6ad16640c7562516ef4b1d1bdc87e56cb047af
1 #!/bin/sh
2 # Copyright (c) 2007-2012 Roy Marples
3 # All rights reserved
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
9 # are met:
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 "$RESOLVCONF" ] && eval "$(@SBINDIR@/resolvconf -v)"
33 NL="
36 : ${dnsmasq_pid:=/var/run/dnsmasq.pid}
37 [ -s "$dnsmasq_pid" ] || dnsmasq_pid=/var/run/dnsmasq/dnsmasq.pid
38 [ -s "$dnsmasq_pid" ] || unset dnsmasq_pid
39 : ${dnsmasq_service:=dnsmasq}
40 : ${dnsmasq_restart:=@RESTARTCMD ${dnsmasq_service}@}
41 newconf="# Generated by resolvconf$NL"
42 newresolv="$newconf"
44 # Using dbus means that we never have to restart the daemon
45 # This is important as it means we should not drop DNS queries
46 # whilst changing DNS options around. However, dbus support is optional
47 # so we need to validate a few things first.
48 # Check for DBus support in the binary
49 dbus=false
50 dbus_ex=false
51 dbus_introspect=$(dbus-send --print-reply --system \
52 --dest=uk.org.thekelleys.dnsmasq \
53 /uk/org/thekelleys/dnsmasq \
54 org.freedesktop.DBus.Introspectable.Introspect \
55 2>/dev/null)
56 if [ $? = 0 ]; then
57 dbus=true
58 if printf %s "$dbus_introspect" | \
59 grep -q '<method name="SetDomainServers">'
60 then
61 dbus_ex=true
65 for n in $NAMESERVERS; do
66 newresolv="${newresolv}nameserver $n$NL"
67 done
69 dbusdest=
70 dbusdest_ex=
71 conf=
72 for d in $DOMAINS; do
73 dn="${d%%:*}"
74 ns="${d#*:}"
75 while [ -n "$ns" ]; do
76 n="${ns%%,*}"
77 if $dbus && ! $dbus_ex; then
78 case "$n" in
79 *.*.*.*)
80 SIFS=${IFS-y} OIFS=$IFS
81 IFS=.
82 set -- $n
83 num="0x$(printf %02x $1 $2 $3 $4)"
84 if [ "$SIFS" = y ]; then
85 unset IFS
86 else
87 IFS=$OIFS
89 dbusdest="$dbusdest uint32:$(printf %u $num)"
90 dbusdest="$dbusdest string:$dn"
92 *:*%*)
93 # This version of dnsmasq won't accept
94 # scoped IPv6 addresses
95 dbus=false
97 *:*)
98 SIFS=${IFS-y} OIFS=$IFS bytes= front= back=
99 empty=false i=0
100 IFS=:
101 set -- $n
102 while [ -n "$1" -o -n "$2" ]; do
103 addr="$1"
104 shift
105 if [ -z "$addr" ]; then
106 empty=true
107 continue
109 i=$(($i + 1))
110 while [ ${#addr} -lt 4 ]; do
111 addr="0${addr}"
112 done
113 byte1="$(printf %d 0x${addr%??})"
114 byte2="$(printf %d 0x${addr#??})"
115 if $empty; then
116 back="$back byte:$byte1 byte:$byte2"
117 else
118 front="$front byte:$byte1 byte:$byte2"
120 done
121 while [ $i != 8 ]; do
122 i=$(($i + 1))
123 front="$front byte:0 byte:0"
124 done
125 front="${front}$back"
126 if [ "$SIFS" = y ]; then
127 unset IFS
128 else
129 IFS=$OIFS
131 dbusdest="${dbusdest}$front string:$dn"
134 if ! $dbus_ex; then
135 dbus=false
138 esac
140 dbusdest_ex="$dbusdest_ex${dbusdest_ex:+,}/$dn/$n"
141 conf="${conf}server=/$dn/$n$NL"
142 [ "$ns" = "${ns#*,}" ] && break
143 ns="${ns#*,}"
144 done
145 done
147 if $dbus; then
148 newconf="$newconf$NL# Domain specific servers will"
149 newconf="$newconf be sent over dbus${NL}"
150 else
151 newconf="$newconf$conf"
154 # Try to ensure that config dirs exist
155 if type config_mkdirs >/dev/null 2>&1; then
156 config_mkdirs "$dnsmasq_conf" "$dnsmasq_resolv"
157 else
158 @SBINDIR@/resolvconf -D "$dnsmasq_conf" "$dnsmasq_resolv"
161 changed=false
162 if [ -n "$dnsmasq_conf" ]; then
163 if [ ! -f "$dnsmasq_conf" ] || \
164 [ "$(cat "$dnsmasq_conf")" != "$(printf %s "$newconf")" ]
165 then
166 changed=true
167 printf %s "$newconf" >"$dnsmasq_conf"
170 if [ -n "$dnsmasq_resolv" ]; then
171 # dnsmasq polls this file so no need to set changed=true
172 if [ -f "$dnsmasq_resolv" ]; then
173 if [ "$(cat "$dnsmasq_resolv")" != "$(printf %s "$newresolv")" ]
174 then
175 printf %s "$newresolv" >"$dnsmasq_resolv"
177 else
178 printf %s "$newresolv" >"$dnsmasq_resolv"
182 if $changed; then
183 eval $dnsmasq_restart
185 if $dbus; then
186 if [ -s "$dnsmasq_pid" ]; then
187 $changed || kill -HUP $(cat "$dnsmasq_pid")
189 # Send even if empty so old servers are cleared
190 if $dbus_ex; then
191 method=SetDomainServers
192 if [ -n "$dbusdest_ex" ]; then
193 dbusdest_ex="array:string:$dbusdest_ex"
195 dbusdest="$dbusdest_ex"
196 else
197 method=SetServers
199 dbus-send --system --dest=uk.org.thekelleys.dnsmasq \
200 /uk/org/thekelleys/dnsmasq uk.org.thekelleys.$method \
201 $dbusdest