aboutsummaryrefslogtreecommitdiffstats
path: root/package/base-files/files/lib/network
diff options
context:
space:
mode:
Diffstat (limited to 'package/base-files/files/lib/network')
-rwxr-xr-xpackage/base-files/files/lib/network/config.sh171
1 files changed, 171 insertions, 0 deletions
diff --git a/package/base-files/files/lib/network/config.sh b/package/base-files/files/lib/network/config.sh
new file mode 100755
index 0000000000..90f5bf7424
--- /dev/null
+++ b/package/base-files/files/lib/network/config.sh
@@ -0,0 +1,171 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+# DEBUG="echo"
+
+find_config() {
+ local iftype device iface ifaces ifn
+ for ifn in $interfaces; do
+ config_get iftype "$ifn" type
+ config_get iface "$ifn" ifname
+ case "$iftype" in
+ bridge) config_get ifaces "$ifn" ifnames;;
+ esac
+ config_get device "$ifn" device
+ for ifc in $device $iface $ifaces; do
+ [ "$ifc" = "$1" ] && {
+ echo "$ifn"
+ return 0
+ }
+ done
+ done
+
+ return 1;
+}
+
+scan_interfaces() {
+ local mode iftype iface ifname device
+ interfaces=
+ config_cb() {
+ case "$1" in
+ interface)
+ config_set "$2" auto 1
+ ;;
+ esac
+ config_get iftype "$CONFIG_SECTION" TYPE
+ case "$iftype" in
+ interface)
+ config_get proto "$CONFIG_SECTION" proto
+ append interfaces "$CONFIG_SECTION"
+ config_get iftype "$CONFIG_SECTION" type
+ config_get ifname "$CONFIG_SECTION" ifname
+ config_set "$CONFIG_SECTION" device "$ifname"
+ case "$iftype" in
+ bridge)
+ config_set "$CONFIG_SECTION" ifnames "$ifname"
+ config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
+ ;;
+ esac
+ ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
+ ;;
+ esac
+ }
+ config_load network
+}
+
+add_vlan() {
+ local vif="${1%\.*}"
+
+ [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
+ ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
+ $DEBUG vconfig add "$vif" "${1##*\.}"
+ }
+}
+
+setup_interface() {
+ local iface="$1"
+ local config="$2"
+ local proto
+
+ [ -n "$config" ] || {
+ config=$(find_config "$iface")
+ [ "$?" = 0 ] || return 1
+ }
+
+ proto="${3:-$(config_get "$config" proto)}"
+ config_get iftype "$config" type
+
+ ifconfig "$iface" 2>/dev/null >/dev/null && {
+ # make sure the interface is removed from any existing bridge
+ unbridge "$iface"
+ }
+
+ # Setup VLAN interfaces
+ add_vlan "$iface"
+
+ # Setup bridging
+ case "$iftype" in
+ bridge)
+ ifconfig "$iface" up 2>/dev/null >/dev/null
+ ifconfig "br-$config" 2>/dev/null >/dev/null && {
+ $DEBUG brctl addif "br-$config" "$iface"
+ return 0
+ } || {
+ $DEBUG brctl addbr "br-$config"
+ $DEBUG brctl setfd "br-$config" 0
+ $DEBUG brctl addif "br-$config" "$iface"
+ iface="br-$config"
+ }
+ ;;
+ esac
+
+ # Interface settings
+ config_get mtu "$config" mtu
+ $DEBUG ifconfig "$iface" ${mtu:+mtu $mtu} up
+
+ pidfile="/var/run/$iface.pid"
+ case "$proto" in
+ static)
+ config_get ipaddr "$config" ipaddr
+ config_get netmask "$config" netmask
+ [ -z "$ipaddr" -o -z "$netmask" ] && return 1
+
+ config_get ip6addr "$config" ip6addr
+ config_get gateway "$config" gateway
+ config_get dns "$config" dns
+
+ $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask"
+ [ -z "$gateway" ] || route add default gw "$gateway"
+ [ -z "$dns" -o -f /tmp/resolv.conf ] || {
+ for ns in $dns; do
+ echo "nameserver $ns" >> /tmp/resolv.conf
+ done
+ }
+
+ env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" &
+ ;;
+ dhcp)
+ # prevent udhcpc from starting more than once
+ lock "/var/lock/dhcp-$iface"
+ pid="$(cat "$pidfile" 2>/dev/null)"
+ [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null && {
+ lock -u "/var/lock/dhcp-$iface"
+ return 0
+ }
+
+ config_get ipaddr "$config" ipaddr
+ config_get netmask "$config" netmask
+ config_get hostname "$config" hostname
+ config_get proto1 "$config" proto
+
+ [ -z "$ipaddr" ] || \
+ $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
+
+ # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
+ [ "$proto1" != "$proto" ] && dhcpopts="-n -q"
+ $DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &}
+ lock -u "/var/lock/dhcp-$iface"
+ ;;
+ *)
+ if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
+ eval "setup_interface_$proto '$iface' '$config' '$proto'"
+ else
+ echo "Interface type $proto not supported."
+ return 1
+ fi
+ ;;
+ esac
+}
+
+unbridge() {
+ local dev="$1"
+ local brdev
+
+ brctl show | grep "$dev" >/dev/null && {
+ # interface is still part of a bridge, correct that
+
+ for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
+ brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
+ done
+ }
+}