minor cleanup
[openwrt/openwrt.git] / openwrt / package / base-files / default / lib / network / config.sh
1 #!/bin/sh
2 # Copyright (C) 2006 OpenWrt.org
3
4 # DEBUG="echo"
5
6 find_config() {
7 local iftype device iface ifaces ifn
8 for ifn in $interfaces; do
9 config_get iftype "$ifn" type
10 config_get iface "$ifn" ifname
11 case "$iftype" in
12 bridge) config_get ifaces "$ifn" ifnames;;
13 esac
14 config_get device "$ifn" device
15 for ifc in $device $iface $ifaces; do
16 [ "$ifc" = "$1" ] && {
17 echo "$ifn"
18 return 0
19 }
20 done
21 done
22
23 return 1;
24 }
25
26 scan_interfaces() {
27 local mode iftype iface ifname device
28 interfaces=
29 config_cb() {
30 config_get iftype "$CONFIG_SECTION" TYPE
31 case "$iftype" in
32 interface)
33 config_get proto "$CONFIG_SECTION" proto
34 append interfaces "$CONFIG_SECTION"
35 config_get iftype "$CONFIG_SECTION" type
36 case "$iftype" in
37 bridge)
38 config_get ifname "$CONFIG_SECTION" ifname
39 config_set "$CONFIG_SECTION" ifnames "$ifname"
40 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
41 ;;
42 esac
43 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
44 ;;
45 esac
46 }
47 config_load network
48 }
49
50 add_vlan() {
51 local vif="${1%\.*}"
52
53 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
54 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
55 $DEBUG vconfig add "$vif" "${1##*\.}"
56 }
57 }
58
59 setup_interface() {
60 local iface="$1"
61 local config="$2"
62 local proto
63
64 [ -n "$config" ] || {
65 config=$(find_config "$iface")
66 [ "$?" = 0 ] || return 1
67 }
68
69 proto="${3:-$(config_get "$config" proto)}"
70 config_get iftype "$config" type
71
72 # Setup VLAN interfaces
73 add_vlan "$iface"
74
75 # Setup bridging
76 case "$iftype" in
77 bridge)
78 ifconfig "$iface" up 2>/dev/null >/dev/null
79 ifconfig "br-$config" 2>/dev/null >/dev/null && {
80 $DEBUG brctl addif "br-$config" "$iface"
81 return 0
82 } || {
83 $DEBUG brctl addbr "br-$config"
84 $DEBUG brctl setfd "br-$config" 0
85 $DEBUG brctl addif "br-$config" "$iface"
86 iface="br-$config"
87 }
88 ;;
89 esac
90
91 # Interface settings
92 config_get mtu "$config" mtu
93 $DEBUG ifconfig "$iface" ${mtu:+mtu $mtu} up
94
95 pidfile="/var/run/$iface.pid"
96 case "$proto" in
97 static)
98 config_get ipaddr "$config" ipaddr
99 config_get netmask "$config" netmask
100 [ -z "$ipaddr" -o -z "$netmask" ] && return 1
101
102 config_get ip6addr "$config" ip6addr
103 config_get gateway "$config" gateway
104 config_get dns "$config" dns
105
106 $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask"
107 [ -z "$gateway" ] || route add default gw "$gateway"
108 [ -z "$dns" -o -f /tmp/resolv.conf ] || {
109 for ns in $dns; do
110 echo "nameserver $ns" >> /tmp/resolv.conf
111 done
112 }
113
114 env -i ACTION="ifup" INTERFACE="config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" &
115 ;;
116 dhcp)
117 pid="$(cat "$pidfile" 2>/dev/null)"
118 [ -n "$pid" -a -d "/proc/$pid" ] && kill -9 "$pid"
119
120 config_get ipaddr "$config" ipaddr
121 config_get netmask "$config" netmask
122 config_get hostname "$config" hostname
123 config_get proto1 "$config" proto
124
125 [ -z "$ipaddr" ] || \
126 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
127
128 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
129 [ "$proto1" != "$proto" ] && dhcpopts="-n -q"
130 $DEBUG udhcpc -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &}
131 ;;
132 *)
133 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
134 eval "setup_interface_$proto '$iface' '$config' '$proto'"
135 else
136 echo "Interface type $proto not supported."
137 return 1
138 fi
139 ;;
140 esac
141 }
142