blob: dec6c189949902a2bd5b3edc66c0af5fafdce6e2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
--- busybox-1.00/.pc/udhcpscript.patch/examples/udhcp/simple.script 2004-10-13 00:18:05.000000000 -0700
+++ busybox-1.00/examples/udhcp/simple.script 2005-06-05 15:08:28.432605118 -0700
@@ -1,40 +1,101 @@
#!/bin/sh
+# openslug UDHCP client script
+# this must set the HW address (MAC) on the interface
+#
+. /etc/default/functions
-# udhcpc script edited by Tim Riker <Tim@Rikers.org>
-[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
+echodns(){
+ local dns
+ if test $# -gt 0
+ then
+ for dns in "$@"
+ do
+ echo "nameserver $dns"
+ done
+ fi
+}
+
+# Output the correct contents for resolv.conf
+mkresolv() {
+ test -n "$domain" && echo "search $domain"
+ echodns $dns
+}
+
+# checksum of a file (or stdin if -)
+md5strm() {
+ md5sum $1 2>/dev/null | sed -n 's/^\([0-9A-Za-z]*\).*$/\1/p'
+}
+
+bind() {
+ local B N metric i olddomain
+ B=
+ test -n "$broadcast" && B="broadcast $broadcast"
+ N=
+ test -n "$subnet" && N="netmask $subnet"
+ ifconfig "$interface" "$ip" $B $N up
+
+ # If given router information delete the old information and
+ # enter new stuff, routers get metrics incremented by 1
+ # between each (this is somewhat arbitrary)
+ if test -n "$router"
+ then
+ while route del default gw 0.0.0.0 dev $interface 2>/dev/null
+ do
+ :
+ done
-RESOLV_CONF="/etc/resolv.conf"
-[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
-[ -n "$subnet" ] && NETMASK="netmask $subnet"
+ metric=0
+ for i in $router
+ do
+ route add default gw "$i" dev "$interface" metric $((metric++))
+ done
+ fi
+
+ olddomain=
+ test -r /etc/defaultdomain && olddomain="$(cat /etc/defaultdomain)"
+ if test -n "$domain" -a "$domain" != "$olddomain"
+ then
+ echo "$domain" >/etc/defaultdomain
+ # and update the kernel view too
+ echo "$domain" >/proc/sys/kernel/domainname
+ fi
+
+ # Update /etc/resolv.conf to reflect domain and dns information,
+ # this always clears resolv.conf if none is given
+ md5old="$(md5strm /etc/resolv.conf)"
+ md5new="$(mkresolv | md5strm -)"
+ test "$md5old" != "$md5new" && mkresolv >/etc/resolv.conf
+}
case "$1" in
- deconfig)
- /sbin/ifconfig $interface 0.0.0.0
- ;;
-
- renew|bound)
- /sbin/ifconfig $interface $ip $BROADCAST $NETMASK
-
- if [ -n "$router" ] ; then
- echo "deleting routers"
- while route del default gw 0.0.0.0 dev $interface ; do
- :
- done
-
- metric=0
- for i in $router ; do
- route add default gw $i dev $interface metric $((metric++))
- done
+deconfig)
+ # Bring the interface up (without inet at this point)
+ ifconfig "$interface" 0.0.0.0;;
+
+renew|bound)
+ bind;;
+
+leasefail)
+ # Pull the values from the config data if (only only if) this
+ # is the config interface
+ if test "$interface" = "$(config iface)"
+ then
+ ip="$(config ip)"
+ if test -n "$ip"
+ then
+ router="$(config gateway)"
+ subnet="$(config netmask)"
+ broadcast="$(config broadcast)"
+ domain="$(config domain)"
+ dns="$(config dns)"
+
+ bind
fi
+ fi;;
- echo -n > $RESOLV_CONF
- [ -n "$domain" ] && echo search $domain >> $RESOLV_CONF
- for i in $dns ; do
- echo adding dns $i
- echo nameserver $i >> $RESOLV_CONF
- done
- ;;
+*) echo "udhcpc: $*: unknown command" >&2
+ exit 1;;
esac
exit 0
|
