fix use of uci_set_state in network scripts (thx, netprince)
[openwrt/svn-archive/archive.git] / package / base-files / files / 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 cfgfile="$1"
28 local mode iftype iface ifname device
29 interfaces=
30 config_cb() {
31 case "$1" in
32 interface)
33 config_set "$2" auto 1
34 ;;
35 esac
36 config_get iftype "$CONFIG_SECTION" TYPE
37 case "$iftype" in
38 interface)
39 config_get proto "$CONFIG_SECTION" proto
40 append interfaces "$CONFIG_SECTION"
41 config_get iftype "$CONFIG_SECTION" type
42 config_get ifname "$CONFIG_SECTION" ifname
43 config_get device "$CONFIG_SECTION" device
44 config_set "$CONFIG_SECTION" device "${device:-$ifname}"
45 case "$iftype" in
46 bridge)
47 config_set "$CONFIG_SECTION" ifnames "${device:-$ifname}"
48 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
49 ;;
50 esac
51 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
52 ;;
53 esac
54 }
55 config_load "${cfgfile:-network}"
56 }
57
58 add_vlan() {
59 local vif="${1%\.*}"
60
61 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
62 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
63 $DEBUG vconfig add "$vif" "${1##*\.}"
64 }
65 }
66
67 # Create the interface, if necessary.
68 # Return status 0 indicates that the setup_interface() call should continue
69 # Return status 1 means that everything is set up already.
70
71 prepare_interface() {
72 local iface="$1"
73 local config="$2"
74
75 # if we're called for the bridge interface itself, don't bother trying
76 # to create any interfaces here. The scripts have already done that, otherwise
77 # the bridge interface wouldn't exist.
78 [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
79
80 ifconfig "$iface" 2>/dev/null >/dev/null && {
81 # make sure the interface is removed from any existing bridge and brought down
82 ifconfig "$iface" down
83 unbridge "$iface"
84 }
85
86 # Setup VLAN interfaces
87 add_vlan "$iface"
88 ifconfig "$iface" 2>/dev/null >/dev/null || return 0
89
90 # Setup bridging
91 config_get iftype "$config" type
92 config_get stp "$config" stp
93 case "$iftype" in
94 bridge)
95 [ -x /usr/sbin/brctl ] && {
96 ifconfig "br-$config" 2>/dev/null >/dev/null && {
97 $DEBUG brctl addif "br-$config" "$iface"
98 # Bridge existed already. No further processing necesary
99 } || {
100 $DEBUG brctl addbr "br-$config"
101 $DEBUG brctl setfd "br-$config" 0
102 $DEBUG ifconfig "br-$config" up
103 $DEBUG brctl addif "br-$config" "$iface"
104 $DEBUG brctl stp "br-$config" ${stp:-off}
105 # Creating the bridge here will have triggered a hotplug event, which will
106 # result in another setup_interface() call, so we simply stop processing
107 # the current event at this point.
108 }
109 ifconfig "$iface" up 2>/dev/null >/dev/null
110 return 1
111 }
112 ;;
113 esac
114 return 0
115 }
116
117 set_interface_ifname() {
118 local config="$1"
119 local ifname="$2"
120
121 config_get device "$1" device
122 uci_set_state network "$config" ifname "$ifname"
123 uci_set_state network "$config" device "$device"
124 }
125
126 setup_interface() {
127 local iface="$1"
128 local config="$2"
129 local proto
130 local macaddr
131
132 [ -n "$config" ] || {
133 config=$(find_config "$iface")
134 [ "$?" = 0 ] || return 1
135 }
136 proto="${3:-$(config_get "$config" proto)}"
137
138 prepare_interface "$iface" "$config" || return 0
139
140 [ "$iface" = "br-$config" ] && {
141 # need to bring up the bridge and wait a second for
142 # it to switch to the 'forwarding' state, otherwise
143 # it will lose its routes...
144 ifconfig "$iface" up
145 sleep 1
146 }
147
148 # Interface settings
149 config_get mtu "$config" mtu
150 config_get macaddr "$config" macaddr
151 grep "$iface:" /proc/net/dev > /dev/null && \
152 $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
153 set_interface_ifname "$config" "$iface"
154
155 pidfile="/var/run/$iface.pid"
156 case "$proto" in
157 static)
158 config_get ipaddr "$config" ipaddr
159 config_get netmask "$config" netmask
160 config_get ip6addr "$config" ip6addr
161 [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
162
163 config_get gateway "$config" gateway
164 config_get ip6gw "$config" ip6gw
165 config_get dns "$config" dns
166 config_get bcast "$config" broadcast
167
168 [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
169 [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr"
170 [ -z "$gateway" ] || $DEBUG route add default gw "$gateway"
171 [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw"
172 [ -z "$dns" ] || {
173 for ns in $dns; do
174 grep "$ns" /tmp/resolv.conf.auto 2>/dev/null >/dev/null || {
175 echo "nameserver $ns" >> /tmp/resolv.conf.auto
176 }
177 done
178 }
179
180 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
181 ;;
182 dhcp)
183 # prevent udhcpc from starting more than once
184 lock "/var/lock/dhcp-$iface"
185 pid="$(cat "$pidfile" 2>/dev/null)"
186 [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null && {
187 lock -u "/var/lock/dhcp-$iface"
188 return 0
189 }
190
191 config_get ipaddr "$config" ipaddr
192 config_get netmask "$config" netmask
193 config_get hostname "$config" hostname
194 config_get proto1 "$config" proto
195 config_get clientid "$config" clientid
196
197 [ -z "$ipaddr" ] || \
198 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
199
200 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
201 [ ."$proto1" != ."$proto" ] && dhcpopts="-n -q"
202 $DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} ${clientid:+-c $clientid} -b -p "$pidfile" ${dhcpopts:- -R &}
203 lock -u "/var/lock/dhcp-$iface"
204 ;;
205 *)
206 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
207 eval "setup_interface_$proto '$iface' '$config' '$proto'"
208 else
209 echo "Interface type $proto not supported."
210 return 1
211 fi
212 ;;
213 esac
214 }
215
216 unbridge() {
217 local dev="$1"
218 local brdev
219
220 [ -x /usr/sbin/brctl ] || return 0
221 brctl show | grep "$dev" >/dev/null && {
222 # interface is still part of a bridge, correct that
223
224 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
225 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
226 done
227 }
228 }