rewrite of the network scripts and configuration

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4323 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 147 insertions, 0 deletions

diff --git a/package/base-files/default/lib/network/config.sh b/package/base-files/default/lib/network/config.sh
new file mode 100755
index 0000000000..59ec84aba8
--- /dev/null
+++ b/package/base-files/default/lib/network/config.sh
@@ -0,0 +1,147 @@
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
+# DEBUG="echo"
+
+find_config() {
+	local type iface ifn
+	for ifn in $interfaces; do
+		config_get type "$ifn" type
+		config_get iface "$ifn" ifname
+		case "$type" in
+			bridge)
+				config_get iface "$ifn" ifnames
+			;;
+		esac
+		for ifc in $iface; do
+			[ "$ifc" = "$1" ] && {
+				echo "$ifn"
+				return 0
+			}
+		done
+	done
+
+	return 1;
+}
+
+scan_interfaces() {
+	local mode type iface
+	interfaces=
+	config_cb() {
+		config_get type "$CONFIG_SECTION" TYPE
+		case "$type" in
+			interface)
+				config_get type "$CONFIG_SECTION" type
+				config_get mode "$CONFIG_SECTION" proto
+				case "$type" in
+					bridge)
+						config_get iface "$CONFIG_SECTION" ifname
+						iface="${iface:-br-$CONFIG_SECTION}"
+						config_set "$CONFIG_SECTION" ifname "$iface"
+					;;
+				esac
+				append interfaces "$CONFIG_SECTION"
+				( type "scan_$mode" ) >/dev/null 2>/dev/null && eval "scan_$mode '$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="$3"
+
+	[ -n "$config" ] || {
+		config=$(find_config "$iface")
+		[ "$?" = 0 ] || return 1
+	}
+
+	[ -n "$proto" ] || {
+		config_get proto "$config" proto
+	}
+
+	config_get iftype "$config" type
+	
+	# Setup VLAN interfaces
+	add_vlan "$iface"
+
+	# Setup bridging
+	case "$iftype" in
+		bridge)
+			config_get bridge_ifname "$config" ifname
+			ifconfig "$iface" up 2>/dev/null >/dev/null
+			ifconfig "$bridge_ifname" 2>/dev/null >/dev/null && {
+				$DEBUG brctl addif "$bridge_ifname" "$iface"
+				return 0
+			} || {
+				$DEBUG brctl addbr "$bridge_ifname"
+				$DEBUG brctl setfd "$bridge_ifname" 0
+				$DEBUG brctl addif "$bridge_ifname" "$iface"
+				iface="$bridge_ifname"
+			}
+		;;
+	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)
+			pid="$(cat "$pidfile" 2>/dev/null)"
+			[ -n "$pid" -a -d "/proc/$pid" ] && kill -9 "$pid"
+
+			config_get ipaddr "$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"
+			$DEBUG udhcpc -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &}
+		;;
+		*)
+			if ( eval "type setup_interface_$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
+}
+