add cname section
[openwrt/svn-archive/archive.git] / package / base-files / files / usr / share / udhcpc / default.script
1 #!/bin/sh
2 [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
3
4 . /etc/functions.sh
5 include /lib/network
6 RESOLV_CONF="/tmp/resolv.conf.auto"
7
8 change_state () {
9 [ -n "$ifc" ] || return
10 uci_revert_state "$1" "$2" "$3" "$4"
11 uci_set_state "$1" "$2" "$3" "$4"
12 }
13
14 set_classless_routes() {
15 local max=128
16 local type
17 while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do
18 [ ${1##*/} -eq 32 ] && type=host || type=net
19 echo "udhcpc: adding route for $type $1 via $2"
20 route add -$type "$1" gw "$2" dev "$interface"
21 max=$(($max-1))
22 shift 2
23 done
24 }
25
26 setup_interface () {
27 local old_ip
28 local old_broadcast
29 local old_subnet
30 local old_router
31 local old_dns
32 local user_dns
33 local user_router
34 local user_metric
35
36 [ -n "$ifc" ] && {
37 old_ip="$(uci_get_state network "$ifc" ipaddr)"
38 old_broadcast="$(uci_get_state network "$ifc" broadcast)"
39 old_subnet="$(uci_get_state network "$ifc" netmask)"
40 }
41
42 [ "$ip" != "$old_ip" ] \
43 || [ "${broadcast:-+}" != "$old_broadcast" ] \
44 || [ "${subnet:-255.255.255.0}" != "$old_subnet" ] && {
45 echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}"
46 ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}
47
48 change_state network "$ifc" ipaddr "$ip"
49 change_state network "$ifc" broadcast "${broadcast:-+}"
50 change_state network "$ifc" netmask "${subnet:-255.255.255.0}"
51 }
52
53
54 # Default Route
55 [ -n "$ifc" ] && {
56 change_state network "$ifc" lease_gateway "$router"
57 old_router="$(uci_get_state network "$ifc" gateway)"
58 user_router="$(uci_get network "$ifc" gateway)"
59 user_metric="$(uci_get network "$ifc" metric)"
60 [ -n "$user_router" ] && router="$user_router"
61 }
62
63 [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && [ "$router" != "$old_router" ] && {
64 echo "udhcpc: setting default routers: $router"
65
66 local valid_gw=""
67 for i in $router ; do
68 route add default gw $i ${user_metric:+metric $user_metric} dev $interface
69 valid_gw="${valid_gw:+$valid_gw|}$i"
70 done
71
72 eval $(route -n | awk '
73 /^0.0.0.0\W{9}('$valid_gw')\W/ {next}
74 /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}
75 ')
76
77 change_state network "$ifc" gateway "$router"
78 }
79
80 # CIDR STATIC ROUTES (rfc3442)
81 [ -n "$staticroutes" ] && set_classless_routes $staticroutes
82 [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes
83
84 # DNS
85 old_dns=$(uci_get_state network "$ifc" dns)
86 old_domain=$(uci_get_state network "$ifc" dnsdomain)
87 user_dns=$(uci_get "network.$ifc.dns")
88 [ -n "$user_dns" ] && dns="$user_dns"
89
90 [ -n "$dns" ] && [ "$dns" != "$old_dns" -o -n "$user_dns" ] && {
91 echo "udhcpc: setting dns servers: $dns"
92 add_dns "$ifc" $dns
93
94 [ -n "$domain" ] && [ "$domain" != "$old_domain" ] && {
95 echo "udhcpc: setting dns domain: $domain"
96 sed -i -e "${old_domain:+/^search $old_domain$/d; }/^search $domain$/d" "${RESOLV_CONF}"
97 echo "search $domain" >> "${RESOLV_CONF}"
98 change_state network "$ifc" dnsdomain "$domain"
99 }
100 }
101
102 [ -n "$ifc" ] || return
103
104 # UCI State
105 change_state network "$ifc" lease_server "$serverid"
106 change_state network "$ifc" lease_acquired "$(sed -ne 's![^0-9].*$!!p' /proc/uptime)"
107 change_state network "$ifc" lease_lifetime "$lease"
108 [ -n "$ntpsrv" ] && change_state network "$ifc" lease_ntpsrv "$ntpsrv"
109 [ -n "$timesvr" ] && change_state network "$ifc" lease_timesrv "$timesvr"
110 [ -n "$hostname" ] && change_state network "$ifc" lease_hostname "$hostname"
111 [ -n "$timezone" ] && change_state network "$ifc" lease_timezone "$timezone"
112
113
114 # Hotplug
115 env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
116 }
117
118
119 scan_interfaces
120 applied=
121 for ifc in $interfaces __default; do
122 if [ "$ifc" = __default ]; then
123 ifc=""
124 [ -n "$applied" ] && continue
125 else
126 config_get ifname "$ifc" ifname
127 [ "$ifname" = "$interface" ] || continue
128
129 config_get proto "$ifc" proto
130 [ "$proto" = "dhcp" ] || continue
131 applied=true
132 fi
133
134 case "$1" in
135 deconfig)
136 ifconfig "$interface" 0.0.0.0
137 [ -n "$ifc" ] && {
138 env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
139
140 config_get device "$ifc" device
141 config_get ifname "$ifc" ifname
142 config_get aliases "$ifc" aliases
143 uci_revert_state network "$ifc"
144 [ -n "$device" ] && uci_set_state network "$ifc" device "$device"
145 [ -n "$ifname" ] && uci_set_state network "$ifc" ifname "$ifname"
146 [ -n "$aliases" ] && uci_set_state network "$ifc" aliases "$aliases"
147 }
148 ;;
149 renew)
150 setup_interface update
151 ;;
152 bound)
153 setup_interface ifup
154 ;;
155 esac
156 done
157
158 # user rules
159 [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
160
161 exit 0