79e57d5f3cee63590fe4606e0e5d1f3cea2c61b8
[openwrt/svn-archive/archive.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 "$value"
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 "$cfg" dbus "-1"
53 append_bool "$cfg" boguspriv "-b"
54 append_bool "$cfg" expandhosts "-E"
55
56 append_parm "$cfg" dnsforwardmax "-0"
57 append_parm "$cfg" port "-p"
58 append_parm "$cfg" ednspacket_max "-P"
59 append_parm "$cfg" dhcpleasemax "-X"
60 append_parm "$cfg" "addnhosts" "-H"
61 append_parm "$cfg" "queryport" "-Q"
62 append_parm "$cfg" "domain" "-s"
63 append_parm "$cfg" "local" "-S"
64 append_parm "$cfg" "leasefile" "-l"
65 append_parm "$cfg" "resolvfile" "-r"
66
67 config_get leasefile $cfg leasefile
68 [ -e "$leasefile" ] || touch "$leasefile"
69 config_get_bool cachelocal "$cfg" cachelocal 1
70 }
71
72 dhcp_subscrid_add() {
73 local cfg="$1"
74
75 config_get name "$cfg" name
76 [ -n "$name" ] || return 0
77
78 config_get subscriberid "$cfg" subscriberid
79 [ -n "$subscriberid" ] || return 0
80
81 append args "--dhcp-subscrid=$name,$subscriberid"
82
83 dhcp_option_add "$cfg" "$name"
84 }
85
86 dhcp_remoteid_add() {
87 local cfg="$1"
88
89 config_get name "$cfg" name
90 [ -n "$name" ] || return 0
91
92 config_get remoteid "$cfg" remoteid
93 [ -n "$remoteid" ] || return 0
94
95 append args "--dhcp-remoteid=$name,$remoteid"
96
97 dhcp_option_add "$cfg" "$name"
98 }
99
100 dhcp_circuitid_add() {
101 local cfg="$1"
102
103 config_get name "$cfg" name
104 [ -n "$name" ] || return 0
105
106 config_get circuitid "$cfg" circuitid
107 [ -n "$circuitid" ] || return 0
108
109 append args "--dhcp-circuitid=$name,$circuitid"
110
111 dhcp_option_add "$cfg" "$name"
112 }
113
114 dhcp_userclass_add() {
115 local cfg="$1"
116
117 config_get name "$cfg" name
118 [ -n "$name" ] || return 0
119
120 config_get userclass "$cfg" userclass
121 [ -n "$userclass" ] || return 0
122
123 append args "--dhcp-userclass=$name,$userclass"
124
125 dhcp_option_add "$cfg" "$name"
126 }
127
128 dhcp_vendorclass_add() {
129 local cfg="$1"
130
131 config_get name "$cfg" name
132 [ -n "$name" ] || return 0
133
134 config_get vendorclass "$cfg" vendorclass
135 [ -n "$vendorclass" ] || return 0
136
137 append args "--dhcp-vendorclass=$name,$vendorclass"
138
139 dhcp_option_add "$cfg" "$name"
140 }
141
142 dhcp_host_add() {
143 local cfg="$1"
144
145 config_get name "$cfg" name
146 [ -n "$name" ] || return 0
147
148 config_get mac "$cfg" mac
149 [ -n "$mac" ] || return 0
150
151 config_get ip "$cfg" ip
152 [ -n "$ip" ] || return 0
153
154 append args "--dhcp-host=$mac,$ip"
155
156 dhcp_option_add "$cfg" "$name"
157 }
158
159 dhcp_mac_add() {
160 local cfg="$1"
161
162 config_get name "$cfg" name
163 [ -n "$name" ] || return 0
164
165 config_get mac "$cfg" mac
166 [ -n "$mac" ] || return 0
167
168 append args "--dhcp-mac=$name,$mac"
169
170 dhcp_option_add "$cfg" "$name"
171 }
172
173 dhcp_boot_add() {
174 local cfg="$1"
175
176 config_get name "$cfg" name
177 [ -n "$name" ] || return 0
178
179 config_get filename "$cfg" filename
180 [ -n "$filename" ] || return 0
181
182 config_get servername "$cfg" servername
183 [ -n "$servername" ] || return 0
184
185 config_get serveraddress "$cfg" serveraddress
186 [ -n "$serveraddress" ] || return 0
187
188 append args "--dhcp-boot=net:$name,$filename,$servername,$serveraddress"
189
190 dhcp_option_add "$cfg" "$name"
191 }
192
193
194 dhcp_add() {
195 local cfg="$1"
196 config_get net "$cfg" interface
197 [ -n "$net" ] || return 0
198
199 config_get name "$cfg" name
200 [ -n "$name" ] || name="$net"
201
202 config_get ifname "$net" ifname
203 [ -n "$ifname" ] || return 0
204
205 config_get dnsserver "$net" dns
206 [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
207 DNS_SERVERS="$DNS_SERVERS $dnsserver"
208 }
209
210 append_bool "$cfg" ignore "-2 $ifname"
211
212 config_get proto "$net" proto
213 [ static = "$proto" ] || return 0
214
215 config_get ipaddr "$net" ipaddr
216 config_get netmask "$cfg" netmask
217 [ -n "$netmask" ] || config_get netmask "$net" netmask
218
219 #check for an already active dhcp server on the interface, unless 'force' is set
220 config_get_bool force "$cfg" force 0
221 [ "$force" -gt 0 ] || {
222 udhcpc -n -q -R -s /bin/true -t 1 -i $ifname >&- && return 0
223 }
224
225 config_get start "$cfg" start
226 config_get limit "$cfg" limit
227 config_get leasetime "$cfg" leasetime
228 config_get options "$cfg" options
229 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
230
231 leasetime="${leasetime:-12h}"
232 start="$(dhcp_calc "${start:-100}")"
233 limit="$((${limit:-150} + 1))"
234 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
235 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
236 append args "--dhcp-range=$name,$START,$END,$NETMASK,$leasetime${options:+ $options}"
237
238 dhcp_option_add "$cfg" "$name"
239 }
240
241 dhcp_option_add() {
242 local cfg="$1"
243 local name="$2"
244
245 for count in $(seq 0 100); do
246 eval current_value=\$CONFIG_"$cfg"_dhcp"$count"
247 if [ -z "$current_value" ]; then
248 let "count-=1"
249 break
250 fi
251 append args "-O $name","$current_value"
252 done
253
254 }
255
256 start() {
257 include /lib/network
258 scan_interfaces
259 config_load dhcp
260
261 args=""
262 config_foreach dnsmasq dnsmasq
263 config_foreach dhcp_host_add host
264 config_foreach dhcp_boot_add boot
265 config_foreach dhcp_mac_add mac
266 config_foreach dhcp_vendorclass_add vendorclass
267 config_foreach dhcp_userclass_add userclass
268 config_foreach dhcp_circuitid_add circuitid
269 config_foreach dhcp_remoteid_add remoteid
270 config_foreach dhcp_subscrid_add subscrid
271 config_foreach dhcp_add dhcp
272
273 /usr/sbin/dnsmasq $args && {
274 rm -f /tmp/resolv.conf
275 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
276 for DNS_SERVER in $DNS_SERVERS ; do
277 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
278 done
279 }
280 }
281
282 stop() {
283 killall dnsmasq
284 }