[projects/rc-scripts.git] / sysconfig / network-scripts / functions.network

#!/bin/sh - keep it for file(1) to get bourne shell script result
#
# $Id$
#
# This is not a shell script; it provides functions to network scripts
# that source it.

source_config ()
{
	local foundconfig=0

	DEVNAME=${CONFIG##*/}
	DEVNAME=${DEVNAME##ifcfg-}
	DEVNAME=${DEVNAME##tnlcfg-}

	if [[ "$CONFIG" = /* ]]; then
		if [ -f "$CONFIG" ]; then
			. "$CONFIG"
			foundconfig=1
		fi
	elif [ -f "/etc/sysconfig/interfaces/$CONFIG" ]; then
		. "/etc/sysconfig/interfaces/$CONFIG"
		foundconfig=1
	fi

	# This is sanity check so that if you've copied ifcfg-eth0 to ifcfg-eth1
	# and forgot to alter DEVICE= line you won't accidentally bring down eth0
	# while executing ifdown eth1. We do that only if configuration file exists
	# (sometimes ifcfg-xyz isn't needed at all like server-side pppoe pppX interfaces)
	if [ "$foundconfig" -eq "1" -a "$DEVICE" -a "$DEVNAME" != "$DEVICE" ]; then
		echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!"
		exit 1
	fi

	if [ "${PREFIX}" ] && [[ "$IPADDR" != */* ]]; then
		IPADDR="$IPADDR/$PREFIX"
	fi
}

do_netreport ()
{
	# Notify programs that have requested notification
	( cd /var/run/netreport || exit
	for i in *; do
		[ -f $i ] && kill -SIGIO $i >/dev/null 2>&1 || \
			rm -f $i >/dev/null 2>&1
	done
	)
}

need_hostname()
{
	local hostname=$(hostname)
	if [ "$hostname" = "(none)" -o "$hostname" = "localhost" -o "$hostname" = "localhost.localdomain" ]; then
		NEEDHOSTNAME=yes
	else
		unset NEEDHOSTNAME
	fi
}

set_hostname()
{
	local hostname domain

	hostname=$(echo $1 | awk ' { gsub(/\..*$/,NIL); print $0; } ')
	domain=$(echo $1 | awk ' { sub(/^[^\.]*\./,NIL); print $0; } ')

	if [ "$hostname" ]; then
		echo "$hostname" > /etc/HOSTNAME
		hostname $hostname
	fi

	if [ "$domain" ]; then
		# XXX umask and possible /etc/resolv.conf symlink breakage
		> /etc/resolv.conf.new
		if ! grep -q "search $domain" /etc/resolv.conf; then
			echo "search $domain" >> /etc/resolv.conf.new
		fi
		echo "domain $domain" >> /etc/resolv.conf.new
		grep -v "^domain " /etc/resolv.conf >> /etc/resolv.conf.new
		mv -f /etc/resolv.conf.new /etc/resolv.conf
	fi
}

set_dhcpclient()
{
	if [ "$BOOTPROTO" = "bootp" -o "$BOOTPROTO" = "pump" ]; then
		DHCP_CLIENT=/sbin/pump
	fi

	if [ -z "$DHCP_CLIENT" ]; then
		if [ "$BOOTPROTO" = "zeroconf" -a -x /usr/sbin/avahi-autoipd ]; then
			DHCP_CLIENT=/usr/sbin/avahi-autoipd
		elif [ -x /sbin/dhcpcd ]; then
			DHCP_CLIENT=/sbin/dhcpcd
		elif [ -x /sbin/dhclient ]; then
			DHCP_CLIENT=/sbin/dhclient
		elif [ -x /sbin/dhcpxd ]; then
			DHCP_CLIENT=/sbin/dhcpxd
		elif [ -x /sbin/pump ]; then
			DHCP_CLIENT=/sbin/pump
		elif [ "$BOOTPROTO" = "auto" -a -x /usr/sbin/avahi-autoipd ]; then
			DHCP_CLIENT=/usr/sbin/avahi-autoipd
		else
			nls "Can't find a DHCP client."
			exit 1
		fi
	fi
}

# Setup Network Address Translation (NAT)
setup_nat()
{
	local src via dst

	if [ -r /etc/sysconfig/static-nat ]; then
		if [ "$1" = "on" ]; then
			grep "^[0-9]" /etc/sysconfig/static-nat | while read src via dst; do
				/sbin/ip route add nat $dst via $src
				/sbin/ip rule add from $src nat $dst
			done
		elif [ "$1" = "off" ]; then
			LC_ALL=C /sbin/ip route show table all | grep -E "^nat[[:blank:]]" | while read nat dst via src args; do
				/sbin/ip rule del from $src nat $dst
				/sbin/ip route del nat $dst via $src
			done
		fi
	fi
}

# Setup static ARP
static_arp()
{
	local rc arpdev host hwaddr flags neflags

	if is_yes "$STATIC_ARP" && [ -r /etc/ethers ]; then
		if [ -x /sbin/arp ]; then
			run_cmd "Setting static ARP entries" /sbin/arp -f /etc/ethers
		else
			show "Setting static ARP entries"; busy
			rc=0
			arpdev=$(ip link show | awk -F':' '(/UP/) && ! (/NOARP/) && ! (/lo:/) && ! (/NONE:/) { print $2; exit }')
			if [ -z "$arpdev" ]; then
				rc=1
			else
				# ip supports only ip addresses
				grep "^[0-9]" /etc/ethers | \
				while read host hwaddr flags; do
					case "$flags" in
					  *temp*)
						neflags="nud stale"
						;;
					  *)
						neflags="nud permanent"
						;;
					esac
					if ! /sbin/ip neigh add $host lladdr $hwaddr $neflags dev $arpdev; then
						rc=1
					fi
				done
			fi
			if [ "$rc" -gt 0 ]; then
				fail
			fi
		fi
	fi
}

static_rarp()
{
	if is_yes "$STATIC_RARP"; then
		if [ ! -e /proc/net/rarp ]; then
			_modprobe single rarp
		fi
		if [ -r /etc/ethers -a -x /sbin/rarp ]; then
			run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers
		fi
	fi
}

# Set up all IP && IP parameter variables
setup_ip_param ()
{
	# detect network device type (ie. dummy, eth for dummy0, eth0 ..)
	if [ -z "$DEVICETYPE" ]; then
		DEVICETYPE=$(echo $DEVICE | awk ' { gsub(/[\.:]?[0-9]*[\.:]?[0-9]*$/,NUL); print $0 } ')
	fi

	# Setup DEVICETYPE for special cases.
	if echo ${DEVICE} | LC_ALL=C grep -qE '^[a-z0-9]+\.[0-9]+$'; then
		DEVICETYPE=vlan
	fi

	# real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias)
	SUBDEVICE=$(echo "$DEVICE" | grep -E "([0-9]+:[0-9]+)")
	DEVICE=$(echo $DEVICE | awk ' { gsub(/:.*$/,NUL); print $0 } ')

	eval IP4ADDR="\$IPADDR${IP4_PRIM_IF:-}"
	# check if ipaddr doesn't contain network length -- use $NETMASK then
	if [[ "$IP4ADDR" != */* ]] && [ "$NETMASK" ]; then
		IP4ADDR=$IP4ADDR/$(calcprefix $NETMASK)
	fi

	# check if we have ipv6 or ipv4 address
	if [[ "${IP4ADDR}" = *:* ]]; then
		IP6ADDR=${IP4ADDR}
		IP4ADDR=""
	else
		eval IP4ADDROPT="\$IP_AOPTS${IP4_PRIM_IF:-}"
		eval IP4ROUTEOPT="\$IP_ROPTS${IP4_PRIM_IF:-}"
	fi
	if [ "${IP6_PRIM_IF}" ]; then
		eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}"
		eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}"
		eval IP6ADDRLABEL="\$IP_LABEL${IP6_PRIM_IF:-}"
	fi
	if [ "${IP4_SRC_IF}" ]; then
		eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}"
		IP4SRCADDR=$(echo ${IP4SRCADDR} | awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
	fi

	# new rc-scripts 0.4.x option
	if [ -z "$HANDLING" ]; then
		HANDLING=0
	fi

	# set handling for bridge
	case "$DEVICETYPE" in
	  br|atm|lec|irda|vlan)
		HANDLING=1
		;;
	esac

	# Multicast ready devices
	if is_yes "$MULTICAST"; then
		MULTICAST="on"
	else
		case "$DEVICETYPE" in
		  eth|br)
			MULTICAST="on"
			;;
		  *)
			MULTICAST="off"
			;;
		esac
	fi

	# ARP ready devices
	if [ "$ARP" ]; then
		if is_yes "$ARP"; then
			ARP="arp on"
		else
			ARP="arp off"
		fi
	fi
}

check_device_down ()
{
	if LC_ALL=C ip link show dev ${DEVICE} 2> /dev/null | grep -q UP; then
		return 1
	else
		return 0
	fi
}

setup_ip_gw_ro ()
{
	# IPv4 gateway
	if is_yes "$IPV4_NETWORKING"; then
		if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then
			# set up default gateway
			if [ "${GATEWAY}" ]; then
				ip -4 route add default via ${GATEWAY} dev ${DEVICE} ${IP4SRCADDR} onlink 2>/dev/null
				if [ $? = 0 ]; then
					DEFGW=${GATEWAY}
				else
					# The default gateway could be set via eth0, while bringing up eth1 we shouldn't set default gateway again.
					# To prevent this message just set GATEWAYDEV=eth0 in /etc/sysconfig/network.
					nls "Warning: Default gateway already set proably via other interface. Do you need to setup GATEWAYDEV?"
				fi
			elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
				ip -4 route add default dev ${DEVICE} ${IP4SRCADDR}
			fi
		fi
	fi

	# IPv6 gateway && IPv6 globalroute
	if is_yes "$IPV6_NETWORKING"; then
		if [ -z "${GATEWAY6DEV}" -o "${GATEWAY6DEV}" = "${DEVICE}" ]; then
			# set up default gateway
			if [ "${GATEWAY6}" ]; then
				ip -6 route add default via ${GATEWAY6} dev ${DEVICE} ${IP6SRCADDR} onlink
				DEFGW6=${GATEWAY6}
			elif [ "${GATEWAY6DEV}" = "${DEVICE}" ]; then
				ip -6 route add default dev ${DEVICE} ${IP6SRCADDR}
			fi
		fi
		if [ -z "${IPV6_GLOBALROUTEDEV}" -o "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
			# set up default route
			if [ "${IPV6_GLOBALROUTEGW}" ]; then
				ip -6 route add 2000::/3 via ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink
			elif [ "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
				ip -6 route add 2000::/3 dev ${DEVICE} ${IP6SRCADDR}
			fi
		fi
	fi
}

#
# following function sets up routes not associated to any device
# eg. unreachable or blackhole routes
# (c) 1999 Jacek Konieczny <jajcus@pld-linux.org>
#
setup_routes()
{
	local args

	if [ -f /etc/sysconfig/static-routes ]; then
		if [ "$1" = "on" -o "$1" = "yes" ]; then
			grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do
				/sbin/ip route add $args
			done
		else
			grep -E "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do
				/sbin/ip route del $args 2>/dev/null
			done
		fi
	fi
}

# Add ONLY IPv4 address (IPv6 address is added automaticly)
set_up_loopback()
{
	if is_yes "$IPV4_NETWORKING"; then
		ip addr add 127.0.0.1/8 dev lo
	fi
	ip link set dev lo up
}

set_down_loopback()
{
	LC_ALL=C ip addr flush dev lo 2>&1 | grep -v "Nothing to flush"
	ip link set dev lo down
}

modprobe_net()
{
	if is_yes "$IPV6_NETWORKING" && is_module "ipv6"; then
		_modprobe single ipv6
	fi

	if is_yes "$IPX" && is_module "ipx"; then
		_modprobe single ipx
	fi
}

# calculate network prefix from given network mask
calcprefix()
{
	local old_IFS netmask prefix endp

	old_IFS=$IFS
	IFS='.'
	netmask=$(echo $1)
	IFS=$old_IFS

	prefix=0
	endp=0
	for n in $netmask; do
		for i in 128 64 32 16 8 4 2 1; do
			if [ $(($n & $i)) -ne 0 ]; then
				if [ $endp -eq 0 ]; then
					prefix=$(($prefix + 1))
				else
					echo "32"
					return
				fi
			else
				endp=1
			fi
		done
	done
	echo $prefix
}

# calculate network mask from given prefix
# (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
calcnetmask()
{
	local prefix a MASK

	MASK=""
	if [ "${1##[0-9]*}" ]; then
		prefix=32
	else
		prefix=$1
	fi
	for i in 1 2 3 4; do
		case $prefix in
		  7)	a=254;;
		  6)	a=252;;
		  5)	a=248;;
		  4)	a=240;;
		  3)	a=224;;
		  2)	a=192;;
		  1)	a=128;;
		  *)
			[ $prefix -ge 8 ] && a=255
			[ $prefix -le 0 ] && a=0
			;;
		esac

		prefix="$(( $prefix - 8))"
		if [ -z "$MASK" ]; then
			MASK=$a
		else
			MASK=$MASK.$a
		fi
	done

	echo $MASK
	return
}

# Retrievies PPPD PID and real interface name from /var/run/ppp-*.pid
get_ppp_device_and_pid ()
{
	if [ -f "/var/run/ppp-$DEVNAME.pid" ]; then
		eval $(
		{
			read PID; echo "PID='$PID'"
			read REALDEVICE; echo "REALDEVICE=$REALDEVICE"
		} < "/var/run/ppp-$DEVNAME.pid")
	fi

	if [ -z "$REALDEVICE" ]; then
		REALDEVICE=$DEVICE
	fi
}

# following function setups advanced routing rules
# Olgierd Pieczul <wojrus@pld-linux.org>
setup_ip_rules ()
{
	local args prio from src

	if [ -f /etc/sysconfig/static-routes ]; then
		if is_yes "$1"; then
			grep -E "^(from|to|iif|tos|fwmark|dev|pref|priority|prio)[[:blank:]]" /etc/sysconfig/static-routes | while read args; do
				/sbin/ip rule add $args
			done
		elif is_no "$1"; then
			LC_ALL=C /sbin/ip rule show | grep -vE -e "from all lookup (main|default|local) \$" -e " map-to " | while read prio from src args; do
				[ "$src" = "all" ] && ip rule delete $args || ip rule delete $from $src $args
			done
		fi
	fi
}

is_wireless_device ()
{
	if [ -x /sbin/iwconfig ]; then
		LC_ALL=C iwconfig "${1}" 2>&1 | grep -q "no wireless extensions" || return 0
	fi
	return 1
}

wireless_param()
{
	device="$1"
	if [ "$2" = "br" ]; then
		prefix="${device}_"
	else
		prefix=""
	fi

	local val wlan_mode

	# wlan mode needs to be first
	wlan_mode="$(eval echo \$${prefix}WLAN_MODE)" && [ "$wlan_mode" ] && \
		iwconfig ${device} mode "$wlan_mode"

	val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ "$val" ] && \
		iwconfig ${device} nick "$val"

	val="$(eval echo \$${prefix}WLAN_NWID)" && [ "$val" ] && \
		iwconfig ${device} nwid "$val"

	if [ "$wlan_mode" != "Managed" -a "$wlan_mode" != "managed" ]; then
		if val="$(eval echo \$${prefix}WLAN_FREQ)" && [ "$val" ]; then
			iwconfig ${device} freq "$val"
		elif val="$(eval echo \$${prefix}WLAN_CHANNEL)" && [ "$val" ]; then
			iwconfig ${device} channel "$val"
		fi
	fi

	val="$(eval echo \$${prefix}WLAN_SENS)" && [ "$val" ] && \
		iwconfig ${device} sens "$val"
	val="$(eval echo \$${prefix}WLAN_AP)" && [ "$val" ] && \
		iwconfig ${device} ap "$val"
	val="$(eval echo \$${prefix}WLAN_BITRATE)" && [ "$val" ] && \
		iwconfig ${device} rate "$val"
	val="$(eval echo \$${prefix}WLAN_RTS_THRESHOLD)" && [ "$val" ] && \
		iwconfig ${device} rts "$val"
	val="$(eval echo \$${prefix}WLAN_FRAGMENTATION_THRESHOLD)" && [ "$val" ] && \
		iwconfig ${device} frag "$val"

	local wlan_encryption="$(eval echo \$${prefix}WLAN_ENCRYPTION)"
	local wlan_key="$(eval echo \$${prefix}WLAN_KEY)"
	# TODO: well, actually shouldn't set WLAN_KEY if other keys than current are set
	if [ "$wlan_key" ]; then
		# wlan key can contain index of key to set
		# to set other than current keys suffix with 1-4:
		local idx
		for idx in 1 2 3 4; do
			val="$(eval echo \$${prefix}WLAN_KEY_$idx)"
			[ "$val" ] || continue
			iwconfig ${device} key "[$idx]" "$val"
		done
		if val="$(eval echo \$${prefix}WLAN_KEY_CURRENT)" && [ "$val" ]; then
			iwconfig ${device} key "[$val]"
		else
			iwconfig ${device} key "$wlan_key"
		fi

		[ "$wlan_encryption" ] && iwconfig ${device} key "$wlan_encryption"
	fi

	if is_no "$wlan_encryption"; then
		iwconfig ${device} key off
	fi
	val="$(eval echo \$${prefix}WLAN_POWER)" && [ "$val" ] && \
		iwconfig ${device} power "$val"
	val="$(eval echo \$${prefix}WLAN_TXPOWER)" && [ "$val" ] && \
		iwconfig ${device} txpower "$val"
	val="$(eval echo \$${prefix}WLAN_RETRY)" && [ "$val" ] && \
		iwconfig ${device} retry "$val"

	# essid should be last due to network rescanning by wlan devices
	val="$(eval echo \$${prefix}WLAN_ESSID)" && [ "$val" ] && \
		iwconfig ${device} essid "$val"

	if is_yes "$(eval echo \$${prefix}WLAN_COMMIT)"; then
		iwconfig ${device} commit
	fi
}

# returns
# 0 - no link
# 1 - link ok
# 2 - unsupported, unknown return
check_mii_tool ()
{
	[ -x /sbin/mii-tool ] || return 2
	local output=$(LC_ALL=C mii-tool $1 2>&1)
	echo $output | grep -q "link ok" && return 1
	echo $output | grep -q "no link" && return 0
	return 2
}

# returns
# 0 - link off
# 1 - link on
# 2 - unsupported, unknown return
check_ethtool ()
{
	[ -x /sbin/ethtool ] || return 2
	local output=$(LC_ALL=C ethtool $1 2>&1)
	echo $output | grep -q "Link detected: yes" && return 1
	echo $output | grep -q "Link detected: no" && return 0
	return 2
}

# returns
# 0 - radio off
# 1 - radio on
# 2 - unsupported
check_iwconfig ()
{
	local output
	# rfkill state (are there devices with multiple rfkill buttons?)
	output=$(cat /sys/class/net/${1}/device/rfkill*/state 2> /dev/null)
	# 1 is rfkill not active
	[ "$output" = "1" ] && return 1
	[ "$output" = "0" -o "$output" = "2" ] && return 0
	[ -x /sbin/iwconfig ] || return 2
	output=$(LC_ALL=C iwconfig "$1" 2>&1)
	# "radio off" is ipwxxx only "feature" (and there is no "radio on")
	echo "$output" | grep -q "radio off" && return 0
	# XXX: need more generic checks for wifi
	return 2
}

# returns
# 0 - link down
# 1 - link up
# 2 - unknown/unsupported
check_link_down ()
{
	local e i m timeout device max_timeout
	device="$1"
	max_timeout="$2"

	if [ ! -x /sbin/mii-tool -a ! -x /sbin/ethtool -a ! -x /sbin/iwconfig ]; then
		return 2
	fi

	[ -z "$max_timeout" ] && max_timeout=6

	if ! LC_ALL=C ip link show dev $device 2>/dev/null | grep -q UP; then
		ip link set dev $device up >/dev/null 2>&1
	fi
	timeout=0
	while [ $timeout -le $max_timeout ]; do
		check_ethtool $device
		e=$?
		check_iwconfig $device
		i=$?
		# trust ethtool and iwconfig
		if [ $i -eq 1 ] || [ $e -eq 1 ]; then
			return 1
		fi
		# use mii check only if all other check are unsupported
		# (mii check lies too often)
		check_mii_tool $device
		m=$?
		if [ $m -eq 1 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then
			return 1
		fi
		usleep 500000
		timeout=$((timeout+1))
	done
	# do not abort dhclient if all the checks are unsupported
	if [ $m -eq 2 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then
		return 2
	fi
	return 0
}
Commit	Line	Data
356d834b	1	#!/bin/sh - keep it for file(1) to get bourne shell script result
b0443108	2	#
ec8b15cb	3	# $Id$
5e6dfc29	4	#
7e04fe0e	5	# This is not a shell script; it provides functions to network scripts
	6	# that source it.
	7
	8	source_config ()
	9	{
944d6d80	10	local foundconfig=0
d30d98d4	11
01e7134e ER	12	DEVNAME=${CONFIG##*/}
	13	DEVNAME=${DEVNAME##ifcfg-}
	14	DEVNAME=${DEVNAME##tnlcfg-}
5e6dfc29	15
1377630a	16	if [[ "$CONFIG" = /* ]]; then
d36ee0fb	17	if [ -f "$CONFIG" ]; then
5e6dfc29	18	. "$CONFIG"
d30d98d4	19	foundconfig=1
5e6dfc29	20	fi
d36ee0fb	21	elif [ -f "/etc/sysconfig/interfaces/$CONFIG" ]; then
5e6dfc29	22	. "/etc/sysconfig/interfaces/$CONFIG"
d30d98d4	23	foundconfig=1
5e6dfc29	24	fi
d100991e ER	25
	26	# This is sanity check so that if you've copied ifcfg-eth0 to ifcfg-eth1
	27	# and forgot to alter DEVICE= line you won't accidentally bring down eth0
d30d98d4 AM	28	# while executing ifdown eth1. We do that only if configuration file exists
d30d98d4 AM	29	# (sometimes ifcfg-xyz isn't needed at all like server-side pppoe pppX interfaces)
8413b103	30	if [ "$foundconfig" -eq "1" -a "$DEVICE" -a "$DEVNAME" != "$DEVICE" ]; then
d100991e ER	31	echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!"
	32	exit 1
	33	fi
	34
8d92f4e5	35	if [ "${PREFIX}" ] && [[ "$IPADDR" != / ]]; then
5e6dfc29 JR	36	IPADDR="$IPADDR/$PREFIX"
5e6dfc29 JR	37	fi
7e04fe0e	38	}
	39
	40	do_netreport ()
	41	{
5e6dfc29 JR	42	# Notify programs that have requested notification
5e6dfc29 JR	43	( cd /var/run/netreport \|\| exit
ac2433c4	44	for i in *; do
5e6dfc29 JR	45	[ -f $i ] && kill -SIGIO $i >/dev/null 2>&1 \|\| \
	46	rm -f $i >/dev/null 2>&1
	47	done
	48	)
7e04fe0e	49	}
	50
	51	need_hostname()
	52	{
5411f833	53	local hostname=$(hostname)
ac2433c4	54	if [ "$hostname" = "(none)" -o "$hostname" = "localhost" -o "$hostname" = "localhost.localdomain" ]; then
5e6dfc29 JR	55	NEEDHOSTNAME=yes
	56	else
	57	unset NEEDHOSTNAME
	58	fi
7e04fe0e	59	}
	60
	61	set_hostname()
	62	{
944d6d80	63	local hostname domain
5e6dfc29 JR	64
	65	hostname=$(echo $1 \| awk ' { gsub(/\..*$/,NIL); print $0; } ')
	66	domain=$(echo $1 \| awk ' { sub(/^[^\.]*\./,NIL); print $0; } ')
	67
8d92f4e5	68	if [ "$hostname" ]; then
5e6dfc29 JR	69	echo "$hostname" > /etc/HOSTNAME
	70	hostname $hostname
	71	fi
	72
8d92f4e5	73	if [ "$domain" ]; then
ac2433c4 ER	74	# XXX umask and possible /etc/resolv.conf symlink breakage
ac2433c4 ER	75	> /etc/resolv.conf.new
5937edff	76	if ! grep -q "search $domain" /etc/resolv.conf; then
5e6dfc29 JR	77	echo "search $domain" >> /etc/resolv.conf.new
	78	fi
	79	echo "domain $domain" >> /etc/resolv.conf.new
	80	grep -v "^domain " /etc/resolv.conf >> /etc/resolv.conf.new
	81	mv -f /etc/resolv.conf.new /etc/resolv.conf
	82	fi
7e04fe0e	83	}
7e04fe0e	84
f1dba8bc ER	85	set_dhcpclient()
	86	{
	87	if [ "$BOOTPROTO" = "bootp" -o "$BOOTPROTO" = "pump" ]; then
	88	DHCP_CLIENT=/sbin/pump
	89	fi
	90
	91	if [ -z "$DHCP_CLIENT" ]; then
f3df266c JK	92	if [ "$BOOTPROTO" = "zeroconf" -a -x /usr/sbin/avahi-autoipd ]; then
	93	DHCP_CLIENT=/usr/sbin/avahi-autoipd
	94	elif [ -x /sbin/dhcpcd ]; then
f1dba8bc ER	95	DHCP_CLIENT=/sbin/dhcpcd
	96	elif [ -x /sbin/dhclient ]; then
	97	DHCP_CLIENT=/sbin/dhclient
	98	elif [ -x /sbin/dhcpxd ]; then
	99	DHCP_CLIENT=/sbin/dhcpxd
	100	elif [ -x /sbin/pump ]; then
	101	DHCP_CLIENT=/sbin/pump
f3df266c JK	102	elif [ "$BOOTPROTO" = "auto" -a -x /usr/sbin/avahi-autoipd ]; then
f3df266c JK	103	DHCP_CLIENT=/usr/sbin/avahi-autoipd
f1dba8bc	104	else
ac7078fd	105	nls "Can't find a DHCP client."
f1dba8bc ER	106	exit 1
	107	fi
	108	fi
	109	}
	110
767c8707 AM	111	# Setup Network Address Translation (NAT)
	112	setup_nat()
	113	{
944d6d80	114	local src via dst
5e6dfc29 JR	115
	116	if [ -r /etc/sysconfig/static-nat ]; then
	117	if [ "$1" = "on" ]; then
	118	grep "^[0-9]" /etc/sysconfig/static-nat \| while read src via dst; do
	119	/sbin/ip route add nat $dst via $src
	120	/sbin/ip rule add from $src nat $dst
	121	done
	122	elif [ "$1" = "off" ]; then
a51d5138	123	LC_ALL=C /sbin/ip route show table all \| grep -E "^nat[[:blank:]]" \| while read nat dst via src args; do
5e6dfc29 JR	124	/sbin/ip rule del from $src nat $dst
	125	/sbin/ip route del nat $dst via $src
	126	done
	127	fi
	128	fi
767c8707 AM	129	}
767c8707 AM	130
fa8aca70 JR	131	# Setup static ARP
fa8aca70 JR	132	static_arp()
7e04fe0e	133	{
944d6d80	134	local rc arpdev host hwaddr flags neflags
5e6dfc29 JR	135
	136	if is_yes "$STATIC_ARP" && [ -r /etc/ethers ]; then
	137	if [ -x /sbin/arp ]; then
	138	run_cmd "Setting static ARP entries" /sbin/arp -f /etc/ethers
	139	else
	140	show "Setting static ARP entries"; busy
	141	rc=0
	142	arpdev=$(ip link show \| awk -F':' '(/UP/) && ! (/NOARP/) && ! (/lo:/) && ! (/NONE:/) { print $2; exit }')
	143	if [ -z "$arpdev" ]; then
	144	rc=1
	145	else
	146	# ip supports only ip addresses
	147	grep "^[0-9]" /etc/ethers \| \
	148	while read host hwaddr flags; do
	149	case "$flags" in
	150	temp)
	151	neflags="nud stale"
	152	;;
	153	*)
	154	neflags="nud permanent"
	155	;;
	156	esac
	157	if ! /sbin/ip neigh add $host lladdr $hwaddr $neflags dev $arpdev; then
	158	rc=1
	159	fi
	160	done
	161	fi
	162	if [ "$rc" -gt 0 ]; then
	163	fail
	164	fi
0a6161f2	165	fi
74a7f2e4	166	fi
7e04fe0e	167	}
7e04fe0e	168
fa8aca70	169	static_rarp()
7e04fe0e	170	{
5e6dfc29 JR	171	if is_yes "$STATIC_RARP"; then
5e6dfc29 JR	172	if [ ! -e /proc/net/rarp ]; then
170103c8	173	_modprobe single rarp
5e6dfc29 JR	174	fi
	175	if [ -r /etc/ethers -a -x /sbin/rarp ]; then
	176	run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers
	177	fi
	178	fi
e9e86175 AM	179	}
e9e86175 AM	180
fa8aca70 JR	181	# Set up all IP && IP parameter variables
fa8aca70 JR	182	setup_ip_param ()
38198f50	183	{
5e6dfc29 JR	184	# detect network device type (ie. dummy, eth for dummy0, eth0 ..)
5e6dfc29 JR	185	if [ -z "$DEVICETYPE" ]; then
14a0605b	186	DEVICETYPE=$(echo $DEVICE \| awk ' { gsub(/[\.:]?[0-9][\.:]?[0-9]$/,NUL); print $0 } ')
5e6dfc29 JR	187	fi
	188
	189	# Setup DEVICETYPE for special cases.
a51d5138	190	if echo ${DEVICE} \| LC_ALL=C grep -qE '^[a-z0-9]+\.[0-9]+$'; then
5e6dfc29 JR	191	DEVICETYPE=vlan
	192	fi
	193
	194	# real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias)
a51d5138	195	SUBDEVICE=$(echo "$DEVICE" \| grep -E "([0-9]+:[0-9]+)")
5e6dfc29 JR	196	DEVICE=$(echo $DEVICE \| awk ' { gsub(/:.*$/,NUL); print $0 } ')
	197
	198	eval IP4ADDR="\$IPADDR${IP4_PRIM_IF:-}"
19196eca ER	199	# check if ipaddr doesn't contain network length -- use $NETMASK then
	200	if [[ "$IP4ADDR" != / ]] && [ "$NETMASK" ]; then
	201	IP4ADDR=$IP4ADDR/$(calcprefix $NETMASK)
	202	fi
	203
	204	# check if we have ipv6 or ipv4 address
	205	if [[ "${IP4ADDR}" = : ]]; then
5e6dfc29 JR	206	IP6ADDR=${IP4ADDR}
	207	IP4ADDR=""
	208	else
	209	eval IP4ADDROPT="\$IP_AOPTS${IP4_PRIM_IF:-}"
	210	eval IP4ROUTEOPT="\$IP_ROPTS${IP4_PRIM_IF:-}"
	211	fi
d36ee0fb	212	if [ "${IP6_PRIM_IF}" ]; then
5e6dfc29 JR	213	eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}"
5e6dfc29 JR	214	eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}"
440a9ecf	215	eval IP6ADDRLABEL="\$IP_LABEL${IP6_PRIM_IF:-}"
5e6dfc29	216	fi
d36ee0fb	217	if [ "${IP4_SRC_IF}" ]; then
5e6dfc29 JR	218	eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}"
	219	IP4SRCADDR=$(echo ${IP4SRCADDR} \| awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
	220	fi
5e6dfc29 JR	221
	222	# new rc-scripts 0.4.x option
	223	if [ -z "$HANDLING" ]; then
	224	HANDLING=0
	225	fi
	226
	227	# set handling for bridge
	228	case "$DEVICETYPE" in
	229	br\|atm\|lec\|irda\|vlan)
	230	HANDLING=1
	231	;;
	232	esac
74a7f2e4	233
5e6dfc29 JR	234	# Multicast ready devices
	235	if is_yes "$MULTICAST"; then
	236	MULTICAST="on"
	237	else
	238	case "$DEVICETYPE" in
	239	eth\|br)
	240	MULTICAST="on"
	241	;;
	242	*)
	243	MULTICAST="off"
	244	;;
	245	esac
	246	fi
	247
	248	# ARP ready devices
d36ee0fb	249	if [ "$ARP" ]; then
5e6dfc29 JR	250	if is_yes "$ARP"; then
	251	ARP="arp on"
	252	else
	253	ARP="arp off"
	254	fi
	255	fi
38198f50 AM	256	}
38198f50 AM	257
fa8aca70	258	check_device_down ()
38198f50	259	{
ac7078fd	260	if LC_ALL=C ip link show dev ${DEVICE} 2> /dev/null \| grep -q UP; then
5e6dfc29 JR	261	return 1
	262	else
	263	return 0
	264	fi
38198f50 AM	265	}
38198f50 AM	266
5e6dfc29	267	setup_ip_gw_ro ()
38198f50	268	{
5e6dfc29 JR	269	# IPv4 gateway
	270	if is_yes "$IPV4_NETWORKING"; then
	271	if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then
	272	# set up default gateway
8d92f4e5	273	if [ "${GATEWAY}" ]; then
b6fb522d ER	274	ip -4 route add default via ${GATEWAY} dev ${DEVICE} ${IP4SRCADDR} onlink 2>/dev/null
	275	if [ $? = 0 ]; then
	276	DEFGW=${GATEWAY}
	277	else
	278	# The default gateway could be set via eth0, while bringing up eth1 we shouldn't set default gateway again.
	279	# To prevent this message just set GATEWAYDEV=eth0 in /etc/sysconfig/network.
	280	nls "Warning: Default gateway already set proably via other interface. Do you need to setup GATEWAYDEV?"
	281	fi
5e6dfc29 JR	282	elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
	283	ip -4 route add default dev ${DEVICE} ${IP4SRCADDR}
	284	fi
	285	fi
	286	fi
	287
	288	# IPv6 gateway && IPv6 globalroute
	289	if is_yes "$IPV6_NETWORKING"; then
	290	if [ -z "${GATEWAY6DEV}" -o "${GATEWAY6DEV}" = "${DEVICE}" ]; then
	291	# set up default gateway
8d92f4e5	292	if [ "${GATEWAY6}" ]; then
5e6dfc29 JR	293	ip -6 route add default via ${GATEWAY6} dev ${DEVICE} ${IP6SRCADDR} onlink
	294	DEFGW6=${GATEWAY6}
	295	elif [ "${GATEWAY6DEV}" = "${DEVICE}" ]; then
	296	ip -6 route add default dev ${DEVICE} ${IP6SRCADDR}
	297	fi
	298	fi
	299	if [ -z "${IPV6_GLOBALROUTEDEV}" -o "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
	300	# set up default route
8d92f4e5	301	if [ "${IPV6_GLOBALROUTEGW}" ]; then
5e6dfc29 JR	302	ip -6 route add 2000::/3 via ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink
	303	elif [ "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
	304	ip -6 route add 2000::/3 dev ${DEVICE} ${IP6SRCADDR}
	305	fi
	306	fi
	307	fi
0a6161f2	308	}
0a6161f2	309
fa8aca70 JR	310	#
	311	# following function sets up routes not associated to any device
	312	# eg. unreachable or blackhole routes
ec8b15cb	313	# (c) 1999 Jacek Konieczny <jajcus@pld-linux.org>
fa8aca70 JR	314	#
fa8aca70 JR	315	setup_routes()
0a6161f2	316	{
944d6d80	317	local args
5e6dfc29 JR	318
5e6dfc29 JR	319	if [ -f /etc/sysconfig/static-routes ]; then
d36ee0fb	320	if [ "$1" = "on" -o "$1" = "yes" ]; then
a51d5138	321	grep -E "^(none\|any)[[:blank:]]" /etc/sysconfig/static-routes \| while read device args; do
5e6dfc29 JR	322	/sbin/ip route add $args
	323	done
	324	else
a51d5138	325	grep -E "^(none\|any)[[:blank:]]" /etc/sysconfig/static-routes \| while read device args; do
5e6dfc29 JR	326	/sbin/ip route del $args 2>/dev/null
	327	done
	328	fi
	329	fi
0a6161f2	330	}
38198f50	331
fa8aca70 JR	332	# Add ONLY IPv4 address (IPv6 address is added automaticly)
fa8aca70 JR	333	set_up_loopback()
0a6161f2	334	{
5e6dfc29 JR	335	if is_yes "$IPV4_NETWORKING"; then
	336	ip addr add 127.0.0.1/8 dev lo
	337	fi
	338	ip link set dev lo up
fa8aca70 JR	339	}
	340
	341	set_down_loopback()
	342	{
ac7078fd	343	LC_ALL=C ip addr flush dev lo 2>&1 \| grep -v "Nothing to flush"
5e6dfc29	344	ip link set dev lo down
0a6161f2	345	}
	346
	347	modprobe_net()
	348	{
63d30ecf AM	349	if is_yes "$IPV6_NETWORKING" && is_module "ipv6"; then
63d30ecf AM	350	_modprobe single ipv6
5e6dfc29	351	fi
fa8aca70	352
63d30ecf AM	353	if is_yes "$IPX" && is_module "ipx"; then
63d30ecf AM	354	_modprobe single ipx
5e6dfc29	355	fi
e016cdae	356	}
7e04fe0e	357
50cd434b	358	# calculate network prefix from given network mask
fa8aca70 JR	359	calcprefix()
fa8aca70 JR	360	{
944d6d80	361	local old_IFS netmask prefix endp
50cd434b JR	362
	363	old_IFS=$IFS
	364	IFS='.'
	365	netmask=$(echo $1)
	366	IFS=$old_IFS
5e6dfc29 JR	367
5e6dfc29 JR	368	prefix=0
50cd434b	369	endp=0
5937edff TP	370	for n in $netmask; do
5937edff TP	371	for i in 128 64 32 16 8 4 2 1; do
50cd434b JR	372	if [ $(($n & $i)) -ne 0 ]; then
	373	if [ $endp -eq 0 ]; then
	374	prefix=$(($prefix + 1))
	375	else
	376	echo "32"
	377	return
	378	fi
	379	else
	380	endp=1
	381	fi
	382	done
5e6dfc29	383	done
50cd434b	384	echo $prefix
490f6163	385	}
85ebccea	386
08ad08db	387	# calculate network mask from given prefix
5379c9d4	388	# (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
fa8aca70 JR	389	calcnetmask()
fa8aca70 JR	390	{
944d6d80	391	local prefix a MASK
5e6dfc29 JR	392
5e6dfc29 JR	393	MASK=""
8d92f4e5	394	if [ "${1##[0-9]*}" ]; then
5e6dfc29 JR	395	prefix=32
5e6dfc29 JR	396	else
944d6d80	397	prefix=$1
5e6dfc29 JR	398	fi
	399	for i in 1 2 3 4; do
	400	case $prefix in
5937edff TP	401	7) a=254;;
	402	6) a=252;;
	403	5) a=248;;
	404	4) a=240;;
	405	3) a=224;;
	406	2) a=192;;
	407	1) a=128;;
5e6dfc29 JR	408	*)
	409	[ $prefix -ge 8 ] && a=255
	410	[ $prefix -le 0 ] && a=0
	411	;;
	412	esac
	413
	414	prefix="$(( $prefix - 8))"
	415	if [ -z "$MASK" ]; then
	416	MASK=$a
	417	else
	418	MASK=$MASK.$a
	419	fi
	420	done
	421
	422	echo $MASK
	423	return
5379c9d4	424	}
47dbf68e	425
dd8b6525	426	# Retrievies PPPD PID and real interface name from /var/run/ppp-*.pid
5e6dfc29 JR	427	get_ppp_device_and_pid ()
5e6dfc29 JR	428	{
d36ee0fb	429	if [ -f "/var/run/ppp-$DEVNAME.pid" ]; then
bf14fcab JR	430	eval $(
bf14fcab JR	431	{
5937edff TP	432	read PID; echo "PID='$PID'"
5937edff TP	433	read REALDEVICE; echo "REALDEVICE=$REALDEVICE"
bf14fcab	434	} < "/var/run/ppp-$DEVNAME.pid")
5e6dfc29 JR	435	fi
5e6dfc29 JR	436
d36ee0fb	437	if [ -z "$REALDEVICE" ]; then
5e6dfc29 JR	438	REALDEVICE=$DEVICE
5e6dfc29 JR	439	fi
dd8b6525	440	}
c3bd5d9f	441
e686ef49	442	# following function setups advanced routing rules
ec8b15cb	443	# Olgierd Pieczul <wojrus@pld-linux.org>
5e6dfc29 JR	444	setup_ip_rules ()
5e6dfc29 JR	445	{
944d6d80	446	local args prio from src
5e6dfc29	447
d36ee0fb	448	if [ -f /etc/sysconfig/static-routes ]; then
5e6dfc29	449	if is_yes "$1"; then
a51d5138	450	grep -E "^(from\|to\|iif\|tos\|fwmark\|dev\|pref\|priority\|prio)[[:blank:]]" /etc/sysconfig/static-routes \| while read args; do
5e6dfc29 JR	451	/sbin/ip rule add $args
	452	done
	453	elif is_no "$1"; then
a51d5138	454	LC_ALL=C /sbin/ip rule show \| grep -vE -e "from all lookup (main\|default\|local) \$" -e " map-to " \| while read prio from src args; do
2eb86030	455	[ "$src" = "all" ] && ip rule delete $args \|\| ip rule delete $from $src $args
5e6dfc29 JR	456	done
	457	fi
	458	fi
e686ef49	459	}
6d145c04	460
5e6dfc29 JR	461	is_wireless_device ()
	462	{
	463	if [ -x /sbin/iwconfig ]; then
	464	LC_ALL=C iwconfig "${1}" 2>&1 \| grep -q "no wireless extensions" \|\| return 0
	465	fi
	466	return 1
a6c22d3d AM	467	}
a6c22d3d AM	468
7a4d5330	469	wireless_param()
5e6dfc29 JR	470	{
	471	device="$1"
	472	if [ "$2" = "br" ]; then
	473	prefix="${device}_"
	474	else
	475	prefix=""
	476	fi
	477
7a4d5330 ER	478	local val wlan_mode
7a4d5330 ER	479
5e6dfc29	480	# wlan mode needs to be first
8d92f4e5	481	wlan_mode="$(eval echo \$${prefix}WLAN_MODE)" && [ "$wlan_mode" ] && \
7a4d5330 ER	482	iwconfig ${device} mode "$wlan_mode"
7a4d5330 ER	483
df3e1a2c AM	484	val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ "$val" ] && \
df3e1a2c AM	485	iwconfig ${device} nick "$val"
7a4d5330	486
8d92f4e5	487	val="$(eval echo \$${prefix}WLAN_NWID)" && [ "$val" ] && \
7a4d5330 ER	488	iwconfig ${device} nwid "$val"
7a4d5330 ER	489
009113c6	490	if [ "$wlan_mode" != "Managed" -a "$wlan_mode" != "managed" ]; then
8d92f4e5	491	if val="$(eval echo \$${prefix}WLAN_FREQ)" && [ "$val" ]; then
7a4d5330	492	iwconfig ${device} freq "$val"
8d92f4e5	493	elif val="$(eval echo \$${prefix}WLAN_CHANNEL)" && [ "$val" ]; then
7a4d5330 ER	494	iwconfig ${device} channel "$val"
7a4d5330 ER	495	fi
5e6dfc29	496	fi
7a4d5330	497
8d92f4e5	498	val="$(eval echo \$${prefix}WLAN_SENS)" && [ "$val" ] && \
7a4d5330	499	iwconfig ${device} sens "$val"
8d92f4e5	500	val="$(eval echo \$${prefix}WLAN_AP)" && [ "$val" ] && \
7a4d5330	501	iwconfig ${device} ap "$val"
8d92f4e5	502	val="$(eval echo \$${prefix}WLAN_BITRATE)" && [ "$val" ] && \
7a4d5330	503	iwconfig ${device} rate "$val"
8d92f4e5	504	val="$(eval echo \$${prefix}WLAN_RTS_THRESHOLD)" && [ "$val" ] && \
7a4d5330	505	iwconfig ${device} rts "$val"
8d92f4e5	506	val="$(eval echo \$${prefix}WLAN_FRAGMENTATION_THRESHOLD)" && [ "$val" ] && \
7a4d5330 ER	507	iwconfig ${device} frag "$val"
7a4d5330 ER	508
b9d6440a	509	local wlan_encryption="$(eval echo \$${prefix}WLAN_ENCRYPTION)"
334325e1 ER	510	local wlan_key="$(eval echo \$${prefix}WLAN_KEY)"
334325e1 ER	511	# TODO: well, actually shouldn't set WLAN_KEY if other keys than current are set
8d92f4e5	512	if [ "$wlan_key" ]; then
334325e1 ER	513	# wlan key can contain index of key to set
	514	# to set other than current keys suffix with 1-4:
	515	local idx
	516	for idx in 1 2 3 4; do
	517	val="$(eval echo \$${prefix}WLAN_KEY_$idx)"
	518	[ "$val" ] \|\| continue
f0f3583f	519	iwconfig ${device} key "[$idx]" "$val"
334325e1 ER	520	done
	521	if val="$(eval echo \$${prefix}WLAN_KEY_CURRENT)" && [ "$val" ]; then
	522	iwconfig ${device} key "[$val]"
	523	else
	524	iwconfig ${device} key "$wlan_key"
	525	fi
	526
8d92f4e5	527	[ "$wlan_encryption" ] && iwconfig ${device} key "$wlan_encryption"
7a4d5330 ER	528	fi
7a4d5330 ER	529
b9d6440a	530	if is_no "$wlan_encryption"; then
5e6dfc29 JR	531	iwconfig ${device} key off
5e6dfc29 JR	532	fi
8d92f4e5	533	val="$(eval echo \$${prefix}WLAN_POWER)" && [ "$val" ] && \
7a4d5330	534	iwconfig ${device} power "$val"
8d92f4e5	535	val="$(eval echo \$${prefix}WLAN_TXPOWER)" && [ "$val" ] && \
7a4d5330	536	iwconfig ${device} txpower "$val"
8d92f4e5	537	val="$(eval echo \$${prefix}WLAN_RETRY)" && [ "$val" ] && \
7a4d5330	538	iwconfig ${device} retry "$val"
2ae29436	539
9a0f7d04	540	# essid should be last due to network rescanning by wlan devices
8d92f4e5	541	val="$(eval echo \$${prefix}WLAN_ESSID)" && [ "$val" ] && \
7a4d5330	542	iwconfig ${device} essid "$val"
a1ac348c AM	543
	544	if is_yes "$(eval echo \$${prefix}WLAN_COMMIT)"; then
	545	iwconfig ${device} commit
9a0f7d04	546	fi
2ae29436 AM	547	}
2ae29436 AM	548
ac2433c4 ER	549	# returns
	550	# 0 - no link
	551	# 1 - link ok
	552	# 2 - unsupported, unknown return
0336ea13 AM	553	check_mii_tool ()
0336ea13 AM	554	{
5e6dfc29	555	[ -x /sbin/mii-tool ] \|\| return 2
1e23492f	556	local output=$(LC_ALL=C mii-tool $1 2>&1)
917c3c39	557	echo $output \| grep -q "link ok" && return 1
ac2433c4 ER	558	echo $output \| grep -q "no link" && return 0
ac2433c4 ER	559	return 2
0336ea13 AM	560	}
0336ea13 AM	561
ac2433c4 ER	562	# returns
	563	# 0 - link off
	564	# 1 - link on
	565	# 2 - unsupported, unknown return
0336ea13 AM	566	check_ethtool ()
0336ea13 AM	567	{
5e6dfc29	568	[ -x /sbin/ethtool ] \|\| return 2
1e23492f	569	local output=$(LC_ALL=C ethtool $1 2>&1)
917c3c39	570	echo $output \| grep -q "Link detected: yes" && return 1
ac2433c4 ER	571	echo $output \| grep -q "Link detected: no" && return 0
ac2433c4 ER	572	return 2
0336ea13 AM	573	}
0336ea13 AM	574
ac2433c4 ER	575	# returns
	576	# 0 - radio off
	577	# 1 - radio on
	578	# 2 - unsupported
1b85f830 AM	579	check_iwconfig ()
1b85f830 AM	580	{
141b5edb	581	local output
0f55a779	582	# rfkill state (are there devices with multiple rfkill buttons?)
141b5edb	583	output=$(cat /sys/class/net/${1}/device/rfkill*/state 2> /dev/null)
0f55a779 AM	584	# 1 is rfkill not active
	585	[ "$output" = "1" ] && return 1
	586	[ "$output" = "0" -o "$output" = "2" ] && return 0
b343992d TP	587	[ -x /sbin/iwconfig ] \|\| return 2
	588	output=$(LC_ALL=C iwconfig "$1" 2>&1)
	589	# "radio off" is ipwxxx only "feature" (and there is no "radio on")
	590	echo "$output" \| grep -q "radio off" && return 0
2864e829	591	# XXX: need more generic checks for wifi
ac2433c4	592	return 2
1b85f830	593	}
0336ea13	594
ac2433c4 ER	595	# returns
	596	# 0 - link down
	597	# 1 - link up
5937edff	598	# 2 - unknown/unsupported
0336ea13 AM	599	check_link_down ()
0336ea13 AM	600	{
9306925b AM	601	local e i m timeout device max_timeout
	602	device="$1"
	603	max_timeout="$2"
	604
00d406d2 ER	605	if [ ! -x /sbin/mii-tool -a ! -x /sbin/ethtool -a ! -x /sbin/iwconfig ]; then
	606	return 2
	607	fi
	608
9306925b AM	609	[ -z "$max_timeout" ] && max_timeout=6
	610
	611	if ! LC_ALL=C ip link show dev $device 2>/dev/null \| grep -q UP; then
	612	ip link set dev $device up >/dev/null 2>&1
c8ac1dc0 AM	613	fi
c8ac1dc0 AM	614	timeout=0
9306925b AM	615	while [ $timeout -le $max_timeout ]; do
9306925b AM	616	check_ethtool $device
c8ac1dc0	617	e=$?
9306925b	618	check_iwconfig $device
c8ac1dc0 AM	619	i=$?
	620	# trust ethtool and iwconfig
	621	if [ $i -eq 1 ] \|\| [ $e -eq 1 ]; then
	622	return 1
74a7f2e4	623	fi
c8ac1dc0 AM	624	# use mii check only if all other check are unsupported
c8ac1dc0 AM	625	# (mii check lies too often)
9306925b	626	check_mii_tool $device
c8ac1dc0 AM	627	m=$?
	628	if [ $m -eq 1 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then
	629	return 1
	630	fi
	631	usleep 500000
	632	timeout=$((timeout+1))
	633	done
	634	# do not abort dhclient if all the checks are unsupported
	635	if [ $m -eq 2 ] && [ $i -eq 2 ] && [ $e -eq 2 ]; then
	636	return 2
74a7f2e4	637	fi
c8ac1dc0	638	return 0
0336ea13	639	}