93b51a55129ce1e980b0ce950dd9ba9fa672f7cf
[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
6 dhcp_calc() {
7 local ip="$1"
8 local res=0
9
10 while [ -n "$ip" ]; do
11 part="${ip%%.*}"
12 res="$(($res * 256))"
13 res="$(($res + $part))"
14 [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
15 done
16 echo "$res"
17 }
18
19 append_bool() {
20 local section="$1"
21 local option="$2"
22 local value="$3"
23 local _tmp
24 config_get_bool _tmp "$section" "$option"
25 [ "$_tmp" -gt 0 ] && append args "$3"
26 }
27
28 dnsmasq() {
29 local cfg="$1"
30 append_bool "$cfg" authoritative "-K"
31 append_bool "$cfg" nodaemon "-d"
32 append_bool "$cfg" domainneeded "-D"
33 append_bool "$cfg" filterwin2k "-f"
34 append_bool "$cfg" nohosts "-I $nohosts"
35 append_bool "$cfg" nonegcache "-N"
36 append_bool "$cfg" strictorder "-o"
37 append_bool "$cfg" logqueries "-q"
38 append_bool "$cfg" noresolv "-I $noresolv"
39 append_bool "$cfg" localise_queries "-I $localise_queries"
40 append_bool "$cfg" readethers "-Z"
41 append_bool "$cfg" dbus "-l"
42
43 config_get dnsforwardmax "$cfg" dnsforwardmax
44 dnsforwardmax="${dnsforwardmax:-150}"
45 append args "-0 $dnsforwardmax"
46
47 config_get port "$cfg" port
48 port="${port:-53}"
49 append args "-p $port"
50
51 config_get ednspacket_max "$cfg" ednspacket_max
52 ednspacket_max="${ednspacket_max:-1280}"
53 append args "-P $ednspacket_max"
54
55 config_get dhcpleasemax "$cfg" dhcpleasemax
56 dhcpleasemax="${dhcpleasemax:-150}"
57 append args "-X $dhcpleasemax"
58
59 config_get addnhosts "$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 append_bool "$cfg" ignore "-I $ifname"
177
178 config_get proto "$net" proto
179 [ static = "$proto" ] || return 0
180
181 config_get ipaddr "$net" ipaddr
182 config_get netmask "$net" netmask
183
184 #check for an already active dhcp server on the interface, unless 'force' is set
185 config_get_bool force "$cfg" force 0
186 [ "$force" -gt 0 ] || {
187 udhcpc -n -q -R -s /bin/true -t 1 -i $ifname >&- && return 0
188 }
189
190 config_get start "$cfg" start
191 config_get limit "$cfg" limit
192 config_get leasetime "$cfg" leasetime
193 config_get options "$cfg" options
194
195 leasetime="${leasetime:-12h}"
196 start="$(dhcp_calc "${start:-100}")"
197 limit="$((${limit:-150} + 1))"
198 eval "$(ipcalc.sh $ipaddr $netmask $start $end)"
199 append args "--dhcp-range=$name,$START,$END,$NETMASK,$leasetime${options:+ $options}"
200
201 dhcp_option_add "$cfg" "$name"
202 }
203
204 dhcp_option_add () {
205 local cfg="$1"
206 local name="$2"
207
208 for count in $(seq 0 100); do
209 eval current_value=\$CONFIG_"$cfg"_dhcp"$count"
210 if [ -z "$current_value" ]; then
211 let "count-=1"
212 break
213 fi
214 append args "-O $name","$current_value"
215 done
216
217 }
218
219 start() {
220 include /lib/network
221 scan_interfaces
222 config_load dhcp
223
224 args=""
225 config_foreach dnsmasq dnsmasq
226 config_foreach dhcp_host_add host
227 config_foreach dhcp_mac_add mac
228 config_foreach dhcp_vendorclass_add vendorclass
229 config_foreach dhcp_userclass_add userclass
230 config_foreach dhcp_circuitid_add circuitid
231 config_foreach dhcp_remoteid_add remoteid
232 config_foreach dhcp_subscrid_add subscrid
233 config_foreach dhcp_add dhcp
234
235 /usr/sbin/dnsmasq $args && {
236 rm -f /tmp/resolv.conf
237 cat > /tmp/resolv.conf <<EOF
238 nameserver 127.0.0.1
239 search lan
240 EOF
241 }
242 }
243
244 stop() {
245 killall dnsmasq
246 }