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Diffstat (limited to 'package/base-files/files/lib/network')
| -rwxr-xr-x | package/base-files/files/lib/network/config.sh | 171 |
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 + } +} |