7d32be077efcfbc1b0bb895becd5c8ab5e56eacd
[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 "$cfg" expandhosts "-E"
55 append_bool "$cfg" enable_tftp "--enable-tftp"
56
57 append_parm "$cfg" dnsforwardmax "-0"
58 append_parm "$cfg" port "-p"
59 append_parm "$cfg" ednspacket_max "-P"
60 append_parm "$cfg" dhcpleasemax "-X"
61 append_parm "$cfg" "addnhosts" "-H"
62 append_parm "$cfg" "queryport" "-Q"
63 append_parm "$cfg" "domain" "-s"
64 append_parm "$cfg" "local" "-S"
65 append_parm "$cfg" "leasefile" "-l"
66 append_parm "$cfg" "resolvfile" "-r"
67 append_parm "$cfg" "tftp_root" "--tftp-root"
68 append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
69
70 config_get leasefile $cfg leasefile
71 [ -e "$leasefile" ] || touch "$leasefile"
72 config_get_bool cachelocal "$cfg" cachelocal 1
73 }
74
75 dhcp_subscrid_add() {
76 local cfg="$1"
77
78 config_get name "$cfg" name
79 [ -n "$name" ] || return 0
80
81 config_get subscriberid "$cfg" subscriberid
82 [ -n "$subscriberid" ] || return 0
83
84 append args "--dhcp-subscrid=$name,$subscriberid"
85
86 dhcp_option_add "$cfg" "$name"
87 }
88
89 dhcp_remoteid_add() {
90 local cfg="$1"
91
92 config_get name "$cfg" name
93 [ -n "$name" ] || return 0
94
95 config_get remoteid "$cfg" remoteid
96 [ -n "$remoteid" ] || return 0
97
98 append args "--dhcp-remoteid=$name,$remoteid"
99
100 dhcp_option_add "$cfg" "$name"
101 }
102
103 dhcp_circuitid_add() {
104 local cfg="$1"
105
106 config_get name "$cfg" name
107 [ -n "$name" ] || return 0
108
109 config_get circuitid "$cfg" circuitid
110 [ -n "$circuitid" ] || return 0
111
112 append args "--dhcp-circuitid=$name,$circuitid"
113
114 dhcp_option_add "$cfg" "$name"
115 }
116
117 dhcp_userclass_add() {
118 local cfg="$1"
119
120 config_get name "$cfg" name
121 [ -n "$name" ] || return 0
122
123 config_get userclass "$cfg" userclass
124 [ -n "$userclass" ] || return 0
125
126 append args "--dhcp-userclass=$name,$userclass"
127
128 dhcp_option_add "$cfg" "$name"
129 }
130
131 dhcp_vendorclass_add() {
132 local cfg="$1"
133
134 config_get name "$cfg" name
135 [ -n "$name" ] || return 0
136
137 config_get vendorclass "$cfg" vendorclass
138 [ -n "$vendorclass" ] || return 0
139
140 append args "--dhcp-vendorclass=$name,$vendorclass"
141
142 dhcp_option_add "$cfg" "$name"
143 }
144
145 dhcp_host_add() {
146 local cfg="$1"
147
148 config_get name "$cfg" name
149 [ -n "$name" ] || return 0
150
151 config_get mac "$cfg" mac
152 [ -n "$mac" ] || return 0
153
154 config_get ip "$cfg" ip
155 [ -n "$ip" ] || return 0
156
157 append args "--dhcp-host=$mac,$ip"
158
159 dhcp_option_add "$cfg" "$name"
160 }
161
162 dhcp_mac_add() {
163 local cfg="$1"
164
165 config_get name "$cfg" name
166 [ -n "$name" ] || return 0
167
168 config_get mac "$cfg" mac
169 [ -n "$mac" ] || return 0
170
171 append args "--dhcp-mac=$name,$mac"
172
173 dhcp_option_add "$cfg" "$name"
174 }
175
176 dhcp_boot_add() {
177 local cfg="$1"
178
179 config_get name "$cfg" name
180 [ -n "$name" ] || return 0
181
182 config_get filename "$cfg" filename
183 [ -n "$filename" ] || return 0
184
185 config_get servername "$cfg" servername
186 [ -n "$servername" ] || return 0
187
188 config_get serveraddress "$cfg" serveraddress
189 [ -n "$serveraddress" ] || return 0
190
191 append args "--dhcp-boot=net:$name,$filename,$servername,$serveraddress"
192
193 dhcp_option_add "$cfg" "$name"
194 }
195
196
197 dhcp_add() {
198 local cfg="$1"
199 config_get net "$cfg" interface
200 [ -n "$net" ] || return 0
201
202 config_get name "$cfg" name
203 [ -n "$name" ] || name="$net"
204
205 config_get ifname "$net" ifname
206 [ -n "$ifname" ] || return 0
207
208 config_get dnsserver "$net" dns
209 [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
210 DNS_SERVERS="$DNS_SERVERS $dnsserver"
211 }
212
213 append_bool "$cfg" ignore "-2 $ifname"
214
215 config_get proto "$net" proto
216 [ static = "$proto" ] || return 0
217
218 config_get ipaddr "$net" ipaddr
219 config_get netmask "$cfg" netmask
220 [ -n "$netmask" ] || config_get netmask "$net" netmask
221
222 #check for an already active dhcp server on the interface, unless 'force' is set
223 config_get_bool force "$cfg" force 0
224 [ "$force" -gt 0 ] || {
225 udhcpc -n -q -R -s /bin/true -t 1 -i $ifname >&- && return 0
226 }
227
228 config_get start "$cfg" start
229 config_get limit "$cfg" limit
230 config_get leasetime "$cfg" leasetime
231 config_get options "$cfg" options
232 config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
233
234 leasetime="${leasetime:-12h}"
235 start="$(dhcp_calc "${start:-100}")"
236 limit="$((${limit:-150} + 1))"
237 eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
238 if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
239 append args "--dhcp-range=$name,$START,$END,$NETMASK,$leasetime${options:+ $options}"
240
241 dhcp_option_add "$cfg" "$name"
242 }
243
244 dhcp_option_add() {
245 local cfg="$1"
246 local name="$2"
247
248 config_get dhcp_option "$cfg" dhcp_option
249 for o in $dhcp_option; do
250 append args "-O $name","$o"
251 done
252
253 }
254
255 start() {
256 include /lib/network
257 scan_interfaces
258 config_load dhcp
259
260 args=""
261 config_foreach dnsmasq dnsmasq
262 config_foreach dhcp_host_add host
263 config_foreach dhcp_boot_add boot
264 config_foreach dhcp_mac_add mac
265 config_foreach dhcp_vendorclass_add vendorclass
266 config_foreach dhcp_userclass_add userclass
267 config_foreach dhcp_circuitid_add circuitid
268 config_foreach dhcp_remoteid_add remoteid
269 config_foreach dhcp_subscrid_add subscrid
270 config_foreach dhcp_add dhcp
271
272 /usr/sbin/dnsmasq $args && {
273 rm -f /tmp/resolv.conf
274 DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
275 for DNS_SERVER in $DNS_SERVERS ; do
276 echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
277 done
278 }
279 }
280
281 stop() {
282 [ -f /tmp/resolv.conf ] && {
283 rm -f /tmp/resolv.conf
284 ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
285 }
286 killall dnsmasq
287 return 0
288 }