X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/976f789aba266bf9c9b86fc8cf15b95c51b344a2..d08b885a8adf1e9c78e7b78fbb2dbd7830ad557f:/package/base-files/files/lib/network/config.sh

diff --git a/package/base-files/files/lib/network/config.sh b/package/base-files/files/lib/network/config.sh
index 37dc2085f..a194ab8e2 100755
--- a/package/base-files/files/lib/network/config.sh
+++ b/package/base-files/files/lib/network/config.sh
@@ -3,6 +3,12 @@
 
 # DEBUG="echo"
 
+do_sysctl() {
+	[ -n "$2" ] && \
+		sysctl -n -e -w "$1=$2" >/dev/null || \
+		sysctl -n -e "$1"
+}
+
 find_config() {
 	local iftype device iface ifaces ifn
 	for ifn in $interfaces; do
@@ -70,6 +76,16 @@ add_vlan() {
 add_dns() {
 	local cfg="$1"; shift
 
+	remove_dns "$cfg"
+
+	# We may be called by pppd's ip-up which has a nonstandard umask set.
+	# Create an empty file here and force its permission to 0644, otherwise
+	# dnsmasq will not be able to re-read the resolv.conf.auto .
+	[ ! -f /tmp/resolv.conf.auto ] && {
+		touch /tmp/resolv.conf.auto
+		chmod 0644 /tmp/resolv.conf.auto
+	}
+
 	local dns
 	local add
 	for dns in "$@"; do
@@ -79,20 +95,27 @@ add_dns() {
 		}
 	done
 
-	uci_set_state network "$cfg" dns "$add"
+	[ -n "$cfg" ] && {
+		uci_set_state network "$cfg" dns "$add"
+		uci_set_state network "$cfg" resolv_dns "$add"
+	}
 }
 
 # remove dns entries of the given iface
 remove_dns() {
 	local cfg="$1"
 
-	local dns
-	config_get dns "$cfg" dns
-	for dns in $dns; do
-		sed -i -e "/^nameserver $dns$/d" /tmp/resolv.conf.auto
-	done
+	[ -n "$cfg" ] && {
+		[ -f /tmp/resolv.conf.auto ] && {
+			local dns=$(uci_get_state network "$cfg" resolv_dns)
+			for dns in $dns; do
+				sed -i -e "/^nameserver $dns$/d" /tmp/resolv.conf.auto
+			done
+		}
 
-	uci_revert_state network "$cfg" dns
+		uci_revert_state network "$cfg" dns
+		uci_revert_state network "$cfg" resolv_dns
+	}
 }
 
 # sort the device list, drop duplicates
@@ -155,6 +178,7 @@ prepare_interface() {
 					done
 					uci_set_state network "$config" device "$newdevs"
 					$DEBUG ifconfig "$iface" 0.0.0.0
+					$DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1
 					$DEBUG brctl addif "br-$config" "$iface"
 					# Bridge existed already. No further processing necesary
 				} || {
@@ -162,16 +186,16 @@ prepare_interface() {
 					config_get_bool stp "$config" stp 0
 					$DEBUG brctl addbr "br-$config"
 					$DEBUG brctl setfd "br-$config" 0
-					$DEBUG ifconfig "br-$config" up
 					$DEBUG ifconfig "$iface" 0.0.0.0
+					$DEBUG do_sysctl "net.ipv6.conf.$iface.disable_ipv6" 1
 					$DEBUG brctl addif "br-$config" "$iface"
 					$DEBUG brctl stp "br-$config" $stp
+					[ -z "$macaddr" ] && macaddr="$(cat /sys/class/net/$iface/address)"
+					$DEBUG ifconfig "br-$config" hw ether $macaddr up
 					# Creating the bridge here will have triggered a hotplug event, which will
 					# result in another setup_interface() call, so we simply stop processing
 					# the current event at this point.
 				}
-
-				[ -n "$macaddr" ] && ifconfig "$iface" down 2>/dev/null >/dev/null
 				ifconfig "$iface" ${macaddr:+hw ether "${macaddr}"} up 2>/dev/null >/dev/null
 				return 1
 			}
@@ -204,23 +228,23 @@ setup_interface_static() {
 	config_get ip6addr "$config" ip6addr
 	[ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
 
-	local gateway ip6gw dns bcast
+	local gateway ip6gw dns bcast metric
 	config_get gateway "$config" gateway
 	config_get ip6gw "$config" ip6gw
 	config_get dns "$config" dns
 	config_get bcast "$config" broadcast
+	config_get metric "$config" metric
+
+	case "$ip6addr" in
+		*/*) ;;
+		*:*) ip6addr="$ip6addr/64" ;;
+	esac
 
 	[ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
 	[ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr"
-	[ -z "$gateway" ] || $DEBUG route add default gw "$gateway" dev "$iface"
-	[ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" dev "$iface"
-	[ -z "$dns" ] || {
-		for ns in $dns; do
-			grep "$ns" /tmp/resolv.conf.auto 2>/dev/null >/dev/null || {
-				echo "nameserver $ns" >> /tmp/resolv.conf.auto
-			}
-		done
-	}
+	[ -z "$gateway" ] || $DEBUG route add default gw "$gateway" ${metric:+metric $metric} dev "$iface"
+	[ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" ${metric:+metric $metric} dev "$iface"
+	[ -z "$dns" ] || add_dns "$config" $dns
 
 	config_get type "$config" TYPE
 	[ "$type" = "alias" ] && return 0
@@ -237,6 +261,25 @@ setup_interface_alias() {
 	config_get cfg "$config" interface
 	[ "$parent" == "$cfg" ] || return 0
 
+	# parent device and ifname
+	local p_device p_type
+	config_get p_device "$cfg" device
+	config_get p_type   "$cfg" type
+
+	# select alias ifname
+	local layer use_iface
+	config_get layer "$config" layer 2
+	case "$layer:$p_type" in
+		# layer 3: e.g. pppoe-wan or pptp-vpn
+		3:*)      use_iface="$iface" ;;
+
+		# layer 2 and parent is bridge: e.g. br-wan
+		2:bridge) use_iface="br-$cfg" ;;
+
+		# layer 1: e.g. eth0 or ath0
+		*)        use_iface="$p_device" ;;
+	esac
+
 	# alias counter
 	local ctr
 	config_get ctr "$parent" alias_count 0
@@ -249,14 +292,14 @@ setup_interface_alias() {
 	append list "$config"
 	config_set "$parent" aliases "$list"
 
-	iface="$iface:$ctr"
-	set_interface_ifname "$config" "$iface"
+	use_iface="$use_iface:$ctr"
+	set_interface_ifname "$config" "$use_iface"
 
 	local proto
 	config_get proto "$config" proto "static"
 	case "${proto}" in
 		static)
-			setup_interface_static "$iface" "$config"
+			setup_interface_static "$use_iface" "$config"
 		;;
 		*)
 			echo "Unsupported type '$proto' for alias config '$config'"
@@ -266,118 +309,105 @@ setup_interface_alias() {
 }
 
 setup_interface() {
-	local iface_main="$1"
+	local iface="$1"
 	local config="$2"
 	local proto="$3"
 	local vifmac="$4"
-	local ip6addr_main=
 
 	[ -n "$config" ] || {
-		config=$(find_config "$iface_main")
+		config=$(find_config "$iface")
 		[ "$?" = 0 ] || return 1
 	}
 
-	prepare_interface "$iface_main" "$config" "$vifmac" || return 0
+	prepare_interface "$iface" "$config" "$vifmac" || return 0
 
-	[ "$iface_main" = "br-$config" ] && {
+	[ "$iface" = "br-$config" ] && {
 		# need to bring up the bridge and wait a second for
 		# it to switch to the 'forwarding' state, otherwise
 		# it will lose its routes...
-		ifconfig "$iface_main" up
+		ifconfig "$iface" up
 		sleep 1
 	}
 
 	# Interface settings
-	grep "$iface_main:" /proc/net/dev > /dev/null && {
-		local mtu macaddr
+	grep -qE "^ *$iface:" /proc/net/dev && {
+		local mtu macaddr txqueuelen
 		config_get mtu "$config" mtu
 		config_get macaddr "$config" macaddr
-		[ -n "$macaddr" ] && $DEBUG ifconfig "$iface_main" down
-		$DEBUG ifconfig "$iface_main" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
+		config_get txqueuelen "$config" txqueuelen
+		[ -n "$macaddr" ] && $DEBUG ifconfig "$iface" down
+		$DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} ${txqueuelen:+txqueuelen $txqueuelen} up
 	}
-	set_interface_ifname "$config" "$iface_main"
+	set_interface_ifname "$config" "$iface"
 
 	[ -n "$proto" ] || config_get proto "$config" proto
 	case "$proto" in
 		static)
-			config_get ip6addr_main "$config" ip6addr
-			setup_interface_static "$iface_main" "$config"
+			setup_interface_static "$iface" "$config"
 		;;
 		dhcp)
-			local lockfile="/var/lock/dhcp-$iface_main"
-			lock "$lockfile"
-
-			# prevent udhcpc from starting more than once
-			local pidfile="/var/run/dhcp-${iface_main}.pid"
-			local pid="$(cat "$pidfile" 2>/dev/null)"
-			if [ -d "/proc/$pid" ] && grep -qs udhcpc "/proc/${pid}/cmdline"; then
-				lock -u "$lockfile"
-			else
-				local ipaddr netmask hostname proto1 clientid
-				config_get ipaddr "$config" ipaddr
-				config_get netmask "$config" netmask
-				config_get hostname "$config" hostname
-				config_get proto1 "$config" proto
-				config_get clientid "$config" clientid
-
-				[ -z "$ipaddr" ] || \
-					$DEBUG ifconfig "$iface_main" "$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)
-				local dhcpopts
-				[ ."$proto1" != ."$proto" ] && dhcpopts="-n -q"
-				$DEBUG eval udhcpc -t 0 -i "$iface_main" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} ${clientid:+-c $clientid} -b -p "$pidfile" ${dhcpopts:- -O rootpath -R &}
-				lock -u "$lockfile"
-			fi
+			# kill running udhcpc instance
+			local pidfile="/var/run/dhcp-${iface}.pid"
+			service_kill udhcpc "$pidfile"
+
+			local ipaddr netmask hostname proto1 clientid vendorid broadcast reqopts
+			config_get ipaddr "$config" ipaddr
+			config_get netmask "$config" netmask
+			config_get hostname "$config" hostname
+			config_get proto1 "$config" proto
+			config_get clientid "$config" clientid
+			config_get vendorid "$config" vendorid
+			config_get_bool broadcast "$config" broadcast 0
+			config_get reqopts "$config" reqopts
+
+			[ -z "$ipaddr" ] || \
+				$DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
+
+			# additional request options
+			local opt dhcpopts
+			for opt in $reqopts; do
+				append dhcpopts "-O $opt"
+			done
+
+			# don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
+			[ "$proto1" != "$proto" ] && append dhcpopts "-n -q" || append dhcpopts "-O rootpath -R &"
+			[ "$broadcast" = 1 ] && broadcast="-O broadcast" || broadcast=
+
+			$DEBUG eval udhcpc -t 0 -i "$iface" \
+				${ipaddr:+-r $ipaddr} \
+				${hostname:+-H $hostname} \
+				${clientid:+-c $clientid} \
+				${vendorid:+-V $vendorid} \
+				-b -p "$pidfile" $broadcast \
+				${dhcpopts}
 		;;
 		none)
-			setup_interface_none "$iface_main" "$config"
+			setup_interface_none "$iface" "$config"
 		;;
 		*)
 			if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
-				eval "setup_interface_$proto '$iface_main' '$config' '$proto'"
+				eval "setup_interface_$proto '$iface' '$config' '$proto'"
 			else
 				echo "Interface type $proto not supported."
 				return 1
 			fi
 		;;
 	esac
-	[ "$proto" = none ] || {
-		for ifn in `ifconfig | grep "^$iface_main:" | awk '{print $1}'`; do
-			ifconfig "$ifn" down
-		done
-	}
-
-	local aliases
-	config_set "$config" aliases ""
-	config_set "$config" alias_count 0
-	config_foreach setup_interface_alias alias "$config" "$iface_main"
-	config_get aliases "$config" aliases
-	[ -z "$aliases" ] || uci_set_state network "$config" aliases "$aliases"
-
-	# put the ip6addr back to the beginning to become the main ip again
-	[ -z "$ip6addr_main" ] || {
-		$DEBUG ifconfig "$iface_main" del "$ip6addr_main"
-		$DEBUG ifconfig "$iface_main" add "$ip6addr_main"
-	}
 }
 
 stop_interface_dhcp() {
 	local config="$1"
 
-	local iface
+	local ifname
 	config_get ifname "$config" ifname
 
 	local lock="/var/lock/dhcp-${ifname}"
 	[ -f "$lock" ] && lock -u "$lock"
 
+	remove_dns "$config"
+
 	local pidfile="/var/run/dhcp-${ifname}.pid"
-	local pid="$(cat "$pidfile" 2>/dev/null)"
-	[ -d "/proc/$pid" ] && {
-		grep -qs udhcpc "/proc/$pid/cmdline" && kill -TERM $pid && \
-			while grep -qs udhcpc "/proc/$pid/cmdline"; do sleep 1; done
-		rm -f "$pidfile"
-	}
+	service_kill udhcpc "$pidfile"
 
 	uci -P /var/state revert "network.$config"
 }
@@ -392,6 +422,7 @@ unbridge() {
 
 		for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
 			brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
+			do_sysctl "net.ipv6.conf.$dev.disable_ipv6" 0
 		done
 	}
 }