source: trunk/package/dnsmasq/files/dnsmasq.init @ 14408

Last change on this file since 14408 was 14408, checked in by markus, 8 years ago

"-R" will not work as it needs the configured IP on the interface.
Thus this option leads to the warning message:
"udhcpc: bind(UDP): Cannot assign requested address"

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 6.3 KB
Line 
1#!/bin/sh /etc/rc.common
2# Copyright (C) 2007 OpenWrt.org
3
4START=60
5DNS_SERVERS=""
6
7dhcp_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
20append_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
29append_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
39append_server() {
40        append args "-S $1"
41}
42
43dnsmasq() {
44        local cfg="$1"
45        append_bool "$cfg" authoritative "-K"
46        append_bool "$cfg" nodaemon "-d"
47        append_bool "$cfg" domainneeded "-D"
48        append_bool "$cfg" filterwin2k "-f"
49        append_bool "$cfg" nohosts "-h"
50        append_bool "$cfg" nonegcache "-N"
51        append_bool "$cfg" strictorder "-o"
52        append_bool "$cfg" logqueries "-q"
53        append_bool "$cfg" noresolv "-R"
54        append_bool "$cfg" localise_queries "-y"
55        append_bool "$cfg" readethers "-Z"
56        append_bool "$cfg" dbus "-1"
57        append_bool "$cfg" boguspriv "-b"
58        append_bool "$cfg" expandhosts "-E"
59        append_bool "$cfg" enable_tftp "--enable-tftp"
60
61        append_parm "$cfg" dnsforwardmax "-0"
62        append_parm "$cfg" port "-p"
63        append_parm "$cfg" ednspacket_max "-P"
64        append_parm "$cfg" dhcpleasemax "-X"
65        append_parm "$cfg" "addnhosts" "-H"
66        append_parm "$cfg" "queryport" "-Q"
67        append_parm "$cfg" "domain" "-s"
68        append_parm "$cfg" "local" "-S"
69        config_list_foreach "$cfg" "server" append_server
70        append_parm "$cfg" "leasefile" "-l"
71        append_parm "$cfg" "resolvfile" "-r"
72        append_parm "$cfg" "tftp_root" "--tftp-root"
73        append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
74
75        config_get leasefile $cfg leasefile
76        [ -e "$leasefile" ] || touch "$leasefile"
77        config_get_bool cachelocal "$cfg" cachelocal 1
78}
79
80dhcp_subscrid_add() {
81        local cfg="$1"
82
83        config_get name "$cfg" name
84        [ -n "$name" ] || return 0
85
86        config_get subscriberid "$cfg" subscriberid
87        [ -n "$subscriberid" ] || return 0
88
89        append args "--dhcp-subscrid=$name,$subscriberid"
90
91        dhcp_option_add "$cfg" "$name"
92}
93
94dhcp_remoteid_add() {
95        local cfg="$1"
96
97        config_get name "$cfg" name
98        [ -n "$name" ] || return 0
99
100        config_get remoteid "$cfg" remoteid
101        [ -n "$remoteid" ] || return 0
102
103        append args "--dhcp-remoteid=$name,$remoteid"
104
105        dhcp_option_add "$cfg" "$name"
106}
107
108dhcp_circuitid_add() {
109        local cfg="$1"
110
111        config_get name "$cfg" name
112        [ -n "$name" ] || return 0
113
114        config_get circuitid "$cfg" circuitid
115        [ -n "$circuitid" ] || return 0
116
117        append args "--dhcp-circuitid=$name,$circuitid"
118
119        dhcp_option_add "$cfg" "$name"
120}
121
122dhcp_userclass_add() {
123        local cfg="$1"
124
125        config_get name "$cfg" name
126        [ -n "$name" ] || return 0
127
128        config_get userclass "$cfg" userclass
129        [ -n "$userclass" ] || return 0
130
131        append args "--dhcp-userclass=$name,$userclass"
132
133        dhcp_option_add "$cfg" "$name"
134}
135
136dhcp_vendorclass_add() {
137        local cfg="$1"
138
139        config_get name "$cfg" name
140        [ -n "$name" ] || return 0
141
142        config_get vendorclass "$cfg" vendorclass
143        [ -n "$vendorclass" ] || return 0
144
145        append args "--dhcp-vendorclass=$name,$vendorclass"
146
147        dhcp_option_add "$cfg" "$name"
148}
149
150dhcp_host_add() {
151        local cfg="$1"
152
153        config_get name "$cfg" name
154        [ -n "$name" ] || return 0
155
156        config_get mac "$cfg" mac
157        [ -n "$mac" ] || return 0
158
159        config_get ip "$cfg" ip
160        [ -n "$ip" ] || return 0
161
162        append args "--dhcp-host=$mac,$ip"
163
164        dhcp_option_add "$cfg" "$name"
165}
166
167dhcp_mac_add() {
168        local cfg="$1"
169
170        config_get name "$cfg" name
171        [ -n "$name" ] || return 0
172
173        config_get mac "$cfg" mac
174        [ -n "$mac" ] || return 0
175
176        append args "--dhcp-mac=$name,$mac"
177
178        dhcp_option_add "$cfg" "$name"
179}
180
181dhcp_boot_add() {
182        local cfg="$1"
183
184        config_get name "$cfg" name
185        [ -n "$name" ] || return 0
186
187        config_get filename "$cfg" filename
188        [ -n "$filename" ] || return 0
189
190        config_get servername "$cfg" servername
191        [ -n "$servername" ] || return 0
192
193        config_get serveraddress "$cfg" serveraddress
194        [ -n "$serveraddress" ] || return 0
195
196        append args "--dhcp-boot=net:$name,$filename,$servername,$serveraddress"
197
198        dhcp_option_add "$cfg" "$name"
199}
200
201
202dhcp_add() {
203        local cfg="$1"
204        config_get net "$cfg" interface
205        [ -n "$net" ] || return 0
206
207        config_get name "$cfg" name
208        [ -n "$name" ] || name="$net"
209
210        config_get ifname "$net" ifname
211        [ -n "$ifname" ] || return 0
212
213        config_get dnsserver "$net" dns
214        [ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
215                DNS_SERVERS="$DNS_SERVERS $dnsserver"
216        }
217
218        append_bool "$cfg" ignore "-2 $ifname"
219
220        config_get proto "$net" proto
221        [ static = "$proto" ] || return 0
222
223        config_get ipaddr "$net" ipaddr
224        config_get netmask "$cfg" netmask
225        [ -n "$netmask" ] || config_get netmask "$net" netmask
226
227        #check for an already active dhcp server on the interface, unless 'force' is set
228        config_get_bool force "$cfg" force 0
229        [ "$force" -gt 0 ] || {
230                udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && return 0
231        }
232
233        config_get start "$cfg" start
234        config_get limit "$cfg" limit
235        config_get leasetime "$cfg" leasetime
236        config_get options "$cfg" options
237        config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
238
239        leasetime="${leasetime:-12h}"
240        start="$(dhcp_calc "${start:-100}")"
241        limit="$((${limit:-150} + 1))"
242        eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
243        if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
244        append args "--dhcp-range=$name,$START,$END,$NETMASK,$leasetime${options:+ $options}"
245
246        dhcp_option_add "$cfg" "$name"
247}
248
249dhcp_option_add() {
250        local cfg="$1"
251        local name="$2"
252
253        config_get dhcp_option "$cfg" dhcp_option
254        for o in $dhcp_option; do
255                append args "-O $name","$o"
256        done
257
258}
259
260start() {
261        include /lib/network
262        scan_interfaces
263        config_load dhcp
264
265        args=""
266        config_foreach dnsmasq dnsmasq
267        config_foreach dhcp_host_add host
268        config_foreach dhcp_boot_add boot
269        config_foreach dhcp_mac_add mac
270        config_foreach dhcp_vendorclass_add vendorclass
271        config_foreach dhcp_userclass_add userclass
272        config_foreach dhcp_circuitid_add circuitid
273        config_foreach dhcp_remoteid_add remoteid
274        config_foreach dhcp_subscrid_add subscrid
275        config_foreach dhcp_add dhcp
276
277        /usr/sbin/dnsmasq $args && {
278                rm -f /tmp/resolv.conf
279                DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
280                for DNS_SERVER in $DNS_SERVERS ; do
281                        echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
282                done
283        }
284}
285
286stop() {
287        [ -f /tmp/resolv.conf ] && {
288                rm -f /tmp/resolv.conf
289                ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
290        }
291        killall dnsmasq
292        return 0
293}
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