ec595afce50571c5391866eff7d1d7d52c7ef612
[openwrt/openwrt.git] / package / dnsmasq / files / dnsmasq.init
1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2007 OpenWrt.org
3
4 START=60
5 DNS_SERVERS=""
6
7 dhcp_calc() {
8 local ip="$1"
9 local res=0
10
11 while [ -n "$ip" ]; do
12 part="${ip%%.*}"
13 res="$(($res * 256))"
14 res="$(($res + $part))"
15 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
16 done
17 echo "$res"
18 }
19
20 append_bool() {
21 local section="$1"
22 local option="$2"
23 local value="$3"
24 local _loctmp
25 config_get_bool _loctmp "$section" "$option"
26 [ "$_loctmp" -gt 0 ] && append args "$3"
27 }
28
29 append_parm() {
30 local section="$1"
31 local option="$2"
32 local switch="$3"
33 local _loctmp
34 config_get _loctmp "$section" "$option"
35 [ -z "$_loctmp" ] && return 0
36 append args "$switch $_loctmp"
37 }
38
39 dnsmasq() {
40 local cfg="$1"
41 append_bool "$cfg" authoritative "-K"
42 append_bool "$cfg" nodaemon "-d"
43 append_bool "$cfg" domainneeded "-D"
44 append_bool "$cfg" filterwin2k "-f"
45 append_bool "$cfg" nohosts "-h"
46 append_bool "$cfg" nonegcache "-N"
47 append_bool "$cfg" strictorder "-o"
48 append_bool "$cfg" logqueries "-q"
49 append_bool "$cfg" noresolv "-R"
50 append_bool "$cfg" localise_queries "-y"
51 append_bool "$cfg" readethers "-Z"
52 append_bool "$cfg" dbus "-l"
53
54 append_parm "$cfg" dnsforwardmax "-0"
55 append_parm "$cfg" port "-p"
56 append_parm "$cfg" ednspacket_max "-P"
57 append_parm "$cfg" dhcpleasemax "-X"
58
59 config_get addnhosts "$cfg" addnhosts
60 config_get interface "$cfg" interface
61 config_get exceptinterface "$cfg" exceptinterface
62 config_get queryport "$cfg" queryport
63 config_get domain "$cfg" domain
64 }
65
66 dhcp_subscrid_add() {
67 local cfg="$1"
68
69 config_get name "$cfg" name
70 [ -n "$name" ] || return 0
71
72 config_get subscriberid "$cfg" subscriberid
73 [ -n "$subscriberid" ] || return 0
74
75 append args "--dhcp-subscrid=$name,$subscriberid"
76
77 dhcp_option_add "$cfg" "$name"
78 }
79
80 dhcp_remoteid_add() {
81 local cfg="$1"
82
83 config_get name "$cfg" name
84 [ -n "$name" ] || return 0
85
86 config_get remoteid "$cfg" remoteid
87 [ -n "$remoteid" ] || return 0
88
89 append args "--dhcp-remoteid=$name,$remoteid"
90
91 dhcp_option_add "$cfg" "$name"
92 }
93
94 dhcp_circuitid_add() {
95 local cfg="$1"
96
97 config_get name "$cfg" name
98 [ -n "$name" ] || return 0
99
100 config_get circuitid "$cfg" circuitid
101 [ -n "$circuitid" ] || return 0
102
103 append args "--dhcp-circuitid=$name,$circuitid"
104
105 dhcp_option_add "$cfg" "$name"
106 }
107
108 dhcp_userclass_add() {
109 local cfg="$1"
110
111 config_get name "$cfg" name
112 [ -n "$name" ] || return 0
113
114 config_get userclass "$cfg" userclass
115 [ -n "$userclass" ] || return 0
116
117 append args "--dhcp-userclass=$name,$userclass"
118
119 dhcp_option_add "$cfg" "$name"
120 }
121
122 dhcp_vendorclass_add() {
123 local cfg="$1"
124
125 config_get name "$cfg" name
126 [ -n "$name" ] || return 0
127
128 config_get vendorclass "$cfg" vendorclass
129 [ -n "$vendorclass" ] || return 0
130
131 append args "--dhcp-vendorclass=$name,$vendorclass"
132
133 dhcp_option_add "$cfg" "$name"
134 }
135
136 dhcp_host_add() {
137 local cfg="$1"
138
139 config_get name "$cfg" name
140 [ -n "$name" ] || return 0
141
142 config_get mac "$cfg" mac
143 [ -n "$mac" ] || return 0
144
145
146 append args "--dhcp-host=$mac,$ip"
147
148 dhcp_option_add "$cfg" "$name"
149 }
150
151 dhcp_mac_add() {
152 local cfg="$1"
153
154 config_get name "$cfg" name
155 [ -n "$name" ] || return 0
156
157 config_get mac "$cfg" mac
158 [ -n "$mac" ] || return 0
159
160 append args "--dhcp-mac=$name,$mac"
161
162 dhcp_option_add "$cfg" "$name"
163 }
164
165 dhcp_add() {
166 local cfg="$1"
167 config_get net "$cfg" interface
168 [ -n "$net" ] || return 0
169
170 config_get name "$cfg" name
171 [ -n "$name" ] || name="$net"
172
173 config_get ifname "$net" ifname
174 [ -n "$ifname" ] || return 0
175
176 config_get dnsserver "$net" dns
177 [ -n "$dnsserver" ] && {
178 DNS_SERVERS="$DNS_SERVERS $dnsserver"
179 }
180
181 append_bool "$cfg" ignore "-I $ifname"
182
183 config_get proto "$net" proto
184 [ static = "$proto" ] || return 0
185
186 config_get ipaddr "$net" ipaddr
187 config_get netmask "$net" netmask
188
189 #check for an already active dhcp server on the interface, unless 'force' is set
190 config_get_bool force "$cfg" force 0
191 [ "$force" -gt 0 ] || {
192 udhcpc -n -q -R -s /bin/true -t 1 -i $ifname >&- && return 0
193 }
194
195 config_get start "$cfg" start
196 config_get limit "$cfg" limit
197 config_get leasetime "$cfg" leasetime
198 config_get options "$cfg" options
199
200 leasetime="${leasetime:-12h}"
201 start="$(dhcp_calc "${start:-100}")"
202 limit="$((${limit:-150} + 1))"
203 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
204 append args "--dhcp-range=$name,$START,$END,$NETMASK,$leasetime${options:+ $options}"
205
206 dhcp_option_add "$cfg" "$name"
207 }
208
209 dhcp_option_add() {
210 local cfg="$1"
211 local name="$2"
212
213 for count in $(seq 0 100); do
214 eval current_value=\$CONFIG_"$cfg"_dhcp"$count"
215 if [ -z "$current_value" ]; then
216 let "count-=1"
217 break
218 fi
219 append args "-O $name","$current_value"
220 done
221
222 }
223
224 start() {
225 include /lib/network
226 scan_interfaces
227 config_load /var/state/network
228 config_load dhcp
229
230 args=""
231 config_foreach dnsmasq dnsmasq
232 config_foreach dhcp_host_add host
233 config_foreach dhcp_mac_add mac
234 config_foreach dhcp_vendorclass_add vendorclass
235 config_foreach dhcp_userclass_add userclass
236 config_foreach dhcp_circuitid_add circuitid
237 config_foreach dhcp_remoteid_add remoteid
238 config_foreach dhcp_subscrid_add subscrid
239 config_foreach dhcp_add dhcp
240
241 /usr/sbin/dnsmasq $args && {
242 rm -f /tmp/resolv.conf
243 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
244 for DNS_SERVER in $DNS_SERVERS ; do
245 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
246 done
247 }
248 }
249
250 stop() {
251 killall dnsmasq
252 }