[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 ()
{
	typeset 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 [ "$foundconfig" -eq "1" -a -n "$DEVICE" -a  "$DEVNAME" != "$DEVICE" ]; then
		echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!"
		exit 1
	fi

	if [ -n "${PREFIX}" ] && [[ "$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()
{
	typeset hostname domain

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

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

	if [ -n "$domain" ] ; then
		>/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 [ -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
		else
			nls "Can't find a dhcp client."
			exit 1
		fi
	fi
}

# Setup Network Address Translation (NAT)
setup_nat()
{
	typeset 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
			/sbin/ip route show table all | egrep "^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()
{
	typeset 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 -k rarp
		fi
		if [ -r /etc/ethers -a -x /sbin/rarp ]; then
			run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers
		fi
	fi
}

vlan_setup()
{
	if [ -x /sbin/vconfig -a -e /proc/net/vlan/config ] && $(echo $DEVICE | grep -q ^eth); then
		/sbin/vconfig set_name_type DEV_PLUS_VID_NO_PAD 2>&1 > /dev/null
		ETH_VLANS="yes"
	else
		ETH_VLANS="no"
	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 ${DEVICE} | LC_ALL=C egrep -q '^[a-z0-9]+\.[0-9]+$'); then
		DEVICETYPE=vlan
	fi

	# real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias)
	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 [ -n "${IP6_PRIM_IF}" ] ; then
		eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}"
		eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}"
	fi
	if [ -n "${IP4_SRC_IF}" ] ; then
		eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}"
		IP4SRCADDR=$(echo ${IP4SRCADDR} | awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
	fi
	if [ -n "${IP6_SRC_IF}" ] ; then
		eval IP6SRCADDR="\$IPADDR${IP6_SRC_IF}"
		IP6SRCADDR=$(echo ${IP6SRCADDR} | 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 [ -n "$ARP" ] ; then
		if is_yes "$ARP"; then
			ARP="arp on"
		else
			ARP="arp off"
		fi
	fi
}

check_device_down ()
{
	if (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 [ -n "${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 [ -n "${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 [ -n "${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()
{
	typeset args

	if [ -f /etc/sysconfig/static-routes ]; then
		if [ "$1" = "on" -o "$1" = "yes" ] ; then
			egrep "^(none|any)[[:blank:]]" /etc/sysconfig/static-routes | while read device args; do
				/sbin/ip route add $args
			done
		else
			egrep "^(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()
{
	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 -k ipv6
	fi

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

# calculate network prefix from given network mask
calcprefix()
{
	typeset 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()
{
	typeset prefix a MASK

	MASK=""
	if [ -n "${1##[0-9]*}" ]; then
		prefix=32
	else
		typeset -i 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 ()
{
	typeset args prio from src

	if [ -f /etc/sysconfig/static-routes ] ; then
		if is_yes "$1"; then
			egrep "^(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 "$1"; then
			/sbin/ip rule show | egrep -v -e "from all lookup (main|default|local) \$" -e " map-to " | while read prio from src args; do
				[ "$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

	if val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ -z "$val" ]; then
		 WLAN_NICKNAME="$(hostname -f 2>/dev/null || hostname 2>/dev/null || echo localhost)"
	else
		 WLAN_NICKNAME="$val"
	fi

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

	iwconfig ${device} nick ${WLAN_NICKNAME}

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

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

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

	if val="$(eval echo \$${prefix}WLAN_KEY)" && [ -n "$val" ]; then
		iwconfig ${device} key "$val"
		val="$(eval echo \$${prefix}WLAN_ENCRYPTION)" && [ -n "$val" ] && \
			iwconfig ${device} key "$val"
	fi

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

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

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

check_mii_tool ()
{
	[ -x /sbin/mii-tool ] || return 2
	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
}

check_ethtool ()
{
	[ -x /sbin/ethtool ] || return 2
	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
}

check_iwconfig ()
{
	[ -x /sbin/iwconfig ] || return 2
	output=$(LC_ALL=C iwconfig $1 2>&1)
	echo $output | grep -q "radio off" && return 0 || return 2
}

check_link_down ()
{
	if [ -x /sbin/mii-tool -o -x /sbin/ethtool -o -x /sbin/iwconfig ]; then
		if ! LC_ALL=C ip link show dev $1 2>/dev/null| grep -q UP ; then
			ip link set dev $1 up >/dev/null 2>&1
			timeout=0
			while [ $timeout -le 10 ]; do
				check_mii_tool $1
				m=$?
				check_ethtool $1
				e=$?
				check_iwconfig $1
				i=$?
				if [ $m -eq 1 ] || [ $e -eq 1 ] ; then
					return 1
				fi
				if [ $m -eq 2 ] && [ $e -eq 2 ] && [ $i -eq 2 ]; then
					return 1
				fi
				usleep 500000
				timeout=$((timeout+1))
			done
			return 0
		fi
	fi
	return 1
}

# This must be last line !
# vi:syntax=sh
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	{
d30d98d4 AM	10	typeset foundconfig=0
d30d98d4 AM	11
01e7134e ER	12	DEVNAME=${CONFIG##*/}
	13	DEVNAME=${DEVNAME##ifcfg-}
	14	DEVNAME=${DEVNAME##tnlcfg-}
5e6dfc29	15
1377630a	16	if [[ "$CONFIG" = /* ]]; then
5e6dfc29 JR	17	if [ -f "$CONFIG" ] ; then
5e6dfc29 JR	18	. "$CONFIG"
d30d98d4	19	foundconfig=1
5e6dfc29 JR	20	fi
	21	elif [ -f "/etc/sysconfig/interfaces/$CONFIG" ] ; then
	22	. "/etc/sysconfig/interfaces/$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
	29	# (sometimes ifcfg-xyz isn't needed at all like server-side pppoe pppX interfaces)
	30	if [ "$foundconfig" -eq "1" -a -n "$DEVICE" -a "$DEVNAME" != "$DEVICE" ]; then
d100991e ER	31	echo >&2 "$0: DEVICE specified in $CONFIG does not match filename. Aborting!"
	32	exit 1
	33	fi
	34
1377630a	35	if [ -n "${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
	43	( cd /var/run/netreport \|\| exit
	44	for i in * ; do
	45	[ -f $i ] && kill -SIGIO $i >/dev/null 2>&1 \|\| \
	46	rm -f $i >/dev/null 2>&1
	47	done
	48	)
7e04fe0e	49	}
	50
	51	need_hostname()
	52	{
5411f833 ER	53	local hostname=$(hostname)
	54	if [ "$hostname" = "(none)" -o "$hostname" = "localhost" -o \
	55	"$hostname" = "localhost.localdomain" ]; then
5e6dfc29 JR	56	NEEDHOSTNAME=yes
	57	else
	58	unset NEEDHOSTNAME
	59	fi
7e04fe0e	60	}
	61
	62	set_hostname()
	63	{
5e6dfc29 JR	64	typeset hostname domain
	65
	66	hostname=$(echo $1 \| awk ' { gsub(/\..*$/,NIL); print $0; } ')
	67	domain=$(echo $1 \| awk ' { sub(/^[^\.]*\./,NIL); print $0; } ')
	68
	69	if [ -n "$hostname" ] ; then
	70	echo "$hostname" > /etc/HOSTNAME
	71	hostname $hostname
	72	fi
	73
	74	if [ -n "$domain" ] ; then
	75	>/etc/resolv.conf.new
	76	if ! grep -q "search $domain" /etc/resolv.conf ; then
	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
	92	if [ -x /sbin/dhcpcd ]; then
	93	DHCP_CLIENT=/sbin/dhcpcd
	94	elif [ -x /sbin/dhclient ]; then
	95	DHCP_CLIENT=/sbin/dhclient
	96	elif [ -x /sbin/dhcpxd ]; then
	97	DHCP_CLIENT=/sbin/dhcpxd
	98	elif [ -x /sbin/pump ]; then
	99	DHCP_CLIENT=/sbin/pump
	100	else
	101	nls "Can't find a dhcp client."
	102	exit 1
	103	fi
	104	fi
	105	}
	106
767c8707 AM	107	# Setup Network Address Translation (NAT)
	108	setup_nat()
	109	{
5e6dfc29 JR	110	typeset src via dst
	111
	112	if [ -r /etc/sysconfig/static-nat ]; then
	113	if [ "$1" = "on" ]; then
	114	grep "^[0-9]" /etc/sysconfig/static-nat \| while read src via dst; do
	115	/sbin/ip route add nat $dst via $src
	116	/sbin/ip rule add from $src nat $dst
	117	done
	118	elif [ "$1" = "off" ]; then
	119	/sbin/ip route show table all \| egrep "^nat[[:blank:]]" \| while read nat dst via src args; do
	120	/sbin/ip rule del from $src nat $dst
	121	/sbin/ip route del nat $dst via $src
	122	done
	123	fi
	124	fi
767c8707 AM	125	}
767c8707 AM	126
fa8aca70 JR	127	# Setup static ARP
fa8aca70 JR	128	static_arp()
7e04fe0e	129	{
5e6dfc29 JR	130	typeset rc arpdev host hwaddr flags neflags
	131
	132	if is_yes "$STATIC_ARP" && [ -r /etc/ethers ]; then
	133	if [ -x /sbin/arp ]; then
	134	run_cmd "Setting static ARP entries" /sbin/arp -f /etc/ethers
	135	else
	136	show "Setting static ARP entries"; busy
	137	rc=0
	138	arpdev=$(ip link show \| awk -F':' '(/UP/) && ! (/NOARP/) && ! (/lo:/) && ! (/NONE:/) { print $2; exit }')
	139	if [ -z "$arpdev" ]; then
	140	rc=1
	141	else
	142	# ip supports only ip addresses
	143	grep "^[0-9]" /etc/ethers \| \
	144	while read host hwaddr flags; do
	145	case "$flags" in
	146	temp)
	147	neflags="nud stale"
	148	;;
	149	*)
	150	neflags="nud permanent"
	151	;;
	152	esac
	153	if ! /sbin/ip neigh add $host lladdr $hwaddr $neflags dev $arpdev; then
	154	rc=1
	155	fi
	156	done
	157	fi
	158	if [ "$rc" -gt 0 ]; then
	159	fail
	160	fi
0a6161f2	161	fi
74a7f2e4	162	fi
7e04fe0e	163	}
7e04fe0e	164
fa8aca70	165	static_rarp()
7e04fe0e	166	{
5e6dfc29 JR	167	if is_yes "$STATIC_RARP"; then
	168	if [ ! -e /proc/net/rarp ]; then
	169	_modprobe single -k rarp
	170	fi
	171	if [ -r /etc/ethers -a -x /sbin/rarp ]; then
	172	run_cmd "Setting static RARP entries" /sbin/rarp -f /etc/ethers
	173	fi
	174	fi
e9e86175 AM	175	}
e9e86175 AM	176
fa8aca70	177	vlan_setup()
e9e86175	178	{
bf14fcab	179	if [ -x /sbin/vconfig -a -e /proc/net/vlan/config ] && $(echo $DEVICE \| grep -q ^eth); then
5e6dfc29 JR	180	/sbin/vconfig set_name_type DEV_PLUS_VID_NO_PAD 2>&1 > /dev/null
	181	ETH_VLANS="yes"
	182	else
	183	ETH_VLANS="no"
	184	fi
de1fc6ce JR	185	}
de1fc6ce JR	186
fa8aca70 JR	187	# Set up all IP && IP parameter variables
fa8aca70 JR	188	setup_ip_param ()
38198f50	189	{
5e6dfc29 JR	190	# detect network device type (ie. dummy, eth for dummy0, eth0 ..)
	191	if [ -z "$DEVICETYPE" ]; then
	192	DEVICETYPE=$(echo $DEVICE \| awk ' { gsub(/[0-9]\.?[0-9]$/,NUL); print $0 } ')
	193	fi
	194
	195	# Setup DEVICETYPE for special cases.
	196	if (echo ${DEVICE} \| LC_ALL=C egrep -q '^[a-z0-9]+\.[0-9]+$'); then
	197	DEVICETYPE=vlan
	198	fi
	199
	200	# real name of device (ie. is eth0 for eth0,eth0:1,eth0:alias)
	201	DEVICE=$(echo $DEVICE \| awk ' { gsub(/:.*$/,NUL); print $0 } ')
	202
	203	eval IP4ADDR="\$IPADDR${IP4_PRIM_IF:-}"
19196eca ER	204	# check if ipaddr doesn't contain network length -- use $NETMASK then
	205	if [[ "$IP4ADDR" != / ]] && [ "$NETMASK" ]; then
	206	IP4ADDR=$IP4ADDR/$(calcprefix $NETMASK)
	207	fi
	208
	209	# check if we have ipv6 or ipv4 address
	210	if [[ "${IP4ADDR}" = : ]]; then
5e6dfc29 JR	211	IP6ADDR=${IP4ADDR}
	212	IP4ADDR=""
	213	else
	214	eval IP4ADDROPT="\$IP_AOPTS${IP4_PRIM_IF:-}"
	215	eval IP4ROUTEOPT="\$IP_ROPTS${IP4_PRIM_IF:-}"
	216	fi
	217	if [ -n "${IP6_PRIM_IF}" ] ; then
	218	eval IP6ADDR="\$IPADDR${IP6_PRIM_IF:-}"
	219	eval IP6ADDROPT="\$IPV6_AOPTS${IP6_PRIM_IF:-}"
	220	fi
	221	if [ -n "${IP4_SRC_IF}" ] ; then
	222	eval IP4SRCADDR="\$IPADDR${IP4_SRC_IF}"
	223	IP4SRCADDR=$(echo ${IP4SRCADDR} \| awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
	224	fi
	225	if [ -n "${IP6_SRC_IF}" ] ; then
	226	eval IP6SRCADDR="\$IPADDR${IP6_SRC_IF}"
	227	IP6SRCADDR=$(echo ${IP6SRCADDR} \| awk ' { gsub(/\/.*/,NIL); print "src " $0; } ')
	228	fi
	229
	230	# new rc-scripts 0.4.x option
	231	if [ -z "$HANDLING" ]; then
	232	HANDLING=0
	233	fi
	234
	235	# set handling for bridge
	236	case "$DEVICETYPE" in
	237	br\|atm\|lec\|irda\|vlan)
	238	HANDLING=1
	239	;;
	240	esac
74a7f2e4	241
5e6dfc29 JR	242	# Multicast ready devices
	243	if is_yes "$MULTICAST"; then
	244	MULTICAST="on"
	245	else
	246	case "$DEVICETYPE" in
	247	eth\|br)
	248	MULTICAST="on"
	249	;;
	250	*)
	251	MULTICAST="off"
	252	;;
	253	esac
	254	fi
	255
	256	# ARP ready devices
	257	if [ -n "$ARP" ] ; then
	258	if is_yes "$ARP"; then
	259	ARP="arp on"
	260	else
	261	ARP="arp off"
	262	fi
	263	fi
38198f50 AM	264	}
38198f50 AM	265
fa8aca70	266	check_device_down ()
38198f50	267	{
5e6dfc29 JR	268	if (ip link show dev ${DEVICE} 2> /dev/null \| grep -q UP); then
	269	return 1
	270	else
	271	return 0
	272	fi
38198f50 AM	273	}
38198f50 AM	274
5e6dfc29	275	setup_ip_gw_ro ()
38198f50	276	{
5e6dfc29 JR	277	# IPv4 gateway
	278	if is_yes "$IPV4_NETWORKING"; then
	279	if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then
	280	# set up default gateway
	281	if [ -n "${GATEWAY}" ]; then
b6fb522d ER	282	ip -4 route add default via ${GATEWAY} dev ${DEVICE} ${IP4SRCADDR} onlink 2>/dev/null
	283	if [ $? = 0 ]; then
	284	DEFGW=${GATEWAY}
	285	else
	286	# The default gateway could be set via eth0, while bringing up eth1 we shouldn't set default gateway again.
	287	# To prevent this message just set GATEWAYDEV=eth0 in /etc/sysconfig/network.
	288	nls "Warning: Default gateway already set proably via other interface. Do you need to setup GATEWAYDEV?"
	289	fi
5e6dfc29 JR	290	elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
	291	ip -4 route add default dev ${DEVICE} ${IP4SRCADDR}
	292	fi
	293	fi
	294	fi
	295
	296	# IPv6 gateway && IPv6 globalroute
	297	if is_yes "$IPV6_NETWORKING"; then
	298	if [ -z "${GATEWAY6DEV}" -o "${GATEWAY6DEV}" = "${DEVICE}" ]; then
	299	# set up default gateway
	300	if [ -n "${GATEWAY6}" ]; then
	301	ip -6 route add default via ${GATEWAY6} dev ${DEVICE} ${IP6SRCADDR} onlink
	302	DEFGW6=${GATEWAY6}
	303	elif [ "${GATEWAY6DEV}" = "${DEVICE}" ]; then
	304	ip -6 route add default dev ${DEVICE} ${IP6SRCADDR}
	305	fi
	306	fi
	307	if [ -z "${IPV6_GLOBALROUTEDEV}" -o "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
	308	# set up default route
	309	if [ -n "${IPV6_GLOBALROUTEGW}" ]; then
	310	ip -6 route add 2000::/3 via ${IPV6_GLOBALROUTEGW} dev ${DEVICE} ${IP6SRCADDR} onlink
	311	elif [ "${IPV6_GLOBALROUTEDEV}" = "${DEVICE}" ]; then
	312	ip -6 route add 2000::/3 dev ${DEVICE} ${IP6SRCADDR}
	313	fi
	314	fi
	315	fi
0a6161f2	316	}
0a6161f2	317
fa8aca70 JR	318	#
	319	# following function sets up routes not associated to any device
	320	# eg. unreachable or blackhole routes
ec8b15cb	321	# (c) 1999 Jacek Konieczny <jajcus@pld-linux.org>
fa8aca70 JR	322	#
fa8aca70 JR	323	setup_routes()
0a6161f2	324	{
5e6dfc29 JR	325	typeset args
	326
	327	if [ -f /etc/sysconfig/static-routes ]; then
	328	if [ "$1" = "on" -o "$1" = "yes" ] ; then
	329	egrep "^(none\|any)[[:blank:]]" /etc/sysconfig/static-routes \| while read device args; do
	330	/sbin/ip route add $args
	331	done
	332	else
	333	egrep "^(none\|any)[[:blank:]]" /etc/sysconfig/static-routes \| while read device args; do
	334	/sbin/ip route del $args 2>/dev/null
	335	done
	336	fi
	337	fi
0a6161f2	338	}
38198f50	339
fa8aca70 JR	340	# Add ONLY IPv4 address (IPv6 address is added automaticly)
fa8aca70 JR	341	set_up_loopback()
0a6161f2	342	{
5e6dfc29 JR	343	if is_yes "$IPV4_NETWORKING"; then
	344	ip addr add 127.0.0.1/8 dev lo
	345	fi
	346	ip link set dev lo up
fa8aca70 JR	347	}
	348
	349	set_down_loopback()
	350	{
5e6dfc29 JR	351	ip addr flush dev lo 2>&1 \| grep -v "Nothing to flush"
5e6dfc29 JR	352	ip link set dev lo down
0a6161f2	353	}
	354
	355	modprobe_net()
	356	{
5e6dfc29 JR	357	if is_yes "$IPV6_NETWORKING" && is_module "ipv6"; then
	358	_modprobe single -k ipv6
	359	fi
fa8aca70	360
5e6dfc29 JR	361	if is_yes "$IPX" && is_module "ipx"; then
	362	_modprobe single -k ipx
	363	fi
e016cdae	364	}
7e04fe0e	365
50cd434b	366	# calculate network prefix from given network mask
fa8aca70 JR	367	calcprefix()
fa8aca70 JR	368	{
50cd434b JR	369	typeset old_IFS netmask prefix endp
	370
	371	old_IFS=$IFS
	372	IFS='.'
	373	netmask=$(echo $1)
	374	IFS=$old_IFS
5e6dfc29 JR	375
5e6dfc29 JR	376	prefix=0
50cd434b JR	377	endp=0
	378	for n in $netmask ; do
	379	for i in 128 64 32 16 8 4 2 1 ; do
	380	if [ $(($n & $i)) -ne 0 ]; then
	381	if [ $endp -eq 0 ]; then
	382	prefix=$(($prefix + 1))
	383	else
	384	echo "32"
	385	return
	386	fi
	387	else
	388	endp=1
	389	fi
	390	done
5e6dfc29	391	done
50cd434b	392	echo $prefix
490f6163	393	}
85ebccea	394
08ad08db	395	# calculate network mask from given prefix
5379c9d4	396	# (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
fa8aca70 JR	397	calcnetmask()
fa8aca70 JR	398	{
5e6dfc29 JR	399	typeset prefix a MASK
	400
	401	MASK=""
08ad08db	402	if [ -n "${1##[0-9]*}" ]; then
5e6dfc29 JR	403	prefix=32
	404	else
	405	typeset -i prefix=$1
	406	fi
	407	for i in 1 2 3 4; do
	408	case $prefix in
	409	7) a=254 ;;
	410	6) a=252 ;;
	411	5) a=248 ;;
	412	4) a=240 ;;
	413	3) a=224 ;;
	414	2) a=192 ;;
	415	1) a=128 ;;
	416	*)
	417	[ $prefix -ge 8 ] && a=255
	418	[ $prefix -le 0 ] && a=0
	419	;;
	420	esac
	421
	422	prefix="$(( $prefix - 8))"
	423	if [ -z "$MASK" ]; then
	424	MASK=$a
	425	else
	426	MASK=$MASK.$a
	427	fi
	428	done
	429
	430	echo $MASK
	431	return
5379c9d4	432	}
47dbf68e	433
dd8b6525	434	# Retrievies PPPD PID and real interface name from /var/run/ppp-*.pid
5e6dfc29 JR	435	get_ppp_device_and_pid ()
	436	{
	437	if [ -f "/var/run/ppp-$DEVNAME.pid" ] ; then
bf14fcab JR	438	eval $(
bf14fcab JR	439	{
5e6dfc29 JR	440	read PID ; echo "PID='$PID'"
5e6dfc29 JR	441	read REALDEVICE ; echo "REALDEVICE=$REALDEVICE"
bf14fcab	442	} < "/var/run/ppp-$DEVNAME.pid")
5e6dfc29 JR	443	fi
	444
	445	if [ -z "$REALDEVICE" ] ; then
	446	REALDEVICE=$DEVICE
	447	fi
dd8b6525	448	}
c3bd5d9f	449
e686ef49	450	# following function setups advanced routing rules
ec8b15cb	451	# Olgierd Pieczul <wojrus@pld-linux.org>
5e6dfc29 JR	452	setup_ip_rules ()
	453	{
	454	typeset args prio from src
	455
	456	if [ -f /etc/sysconfig/static-routes ] ; then
	457	if is_yes "$1"; then
	458	egrep "^(from\|to\|iif\|tos\|fwmark\|dev\|pref\|priority\|prio)[[:blank:]]" /etc/sysconfig/static-routes \| while read args; do
	459	/sbin/ip rule add $args
	460	done
	461	elif is_no "$1"; then
	462	/sbin/ip rule show \| egrep -v -e "from all lookup (main\|default\|local) \$" -e " map-to " \| while read prio from src args; do
	463	[ "$src" == "all" ] && ip rule delete $args \|\| ip rule delete $from $src $args
	464	done
	465	fi
	466	fi
e686ef49	467	}
6d145c04	468
5e6dfc29 JR	469	is_wireless_device ()
	470	{
	471	if [ -x /sbin/iwconfig ]; then
	472	LC_ALL=C iwconfig "${1}" 2>&1 \| grep -q "no wireless extensions" \|\| return 0
	473	fi
	474	return 1
a6c22d3d AM	475	}
a6c22d3d AM	476
7a4d5330	477	wireless_param()
5e6dfc29 JR	478	{
	479	device="$1"
	480	if [ "$2" = "br" ]; then
	481	prefix="${device}_"
	482	else
	483	prefix=""
	484	fi
	485
7a4d5330 ER	486	local val wlan_mode
	487
	488	if val="$(eval echo \$${prefix}WLAN_NICKNAME)" && [ -z "$val" ]; then
aa59debd	489	WLAN_NICKNAME="$(hostname -f 2>/dev/null \|\| hostname 2>/dev/null \|\| echo localhost)"
5e6dfc29	490	else
7a4d5330	491	WLAN_NICKNAME="$val"
5e6dfc29 JR	492	fi
	493
	494	# wlan mode needs to be first
7a4d5330 ER	495	wlan_mode="$(eval echo \$${prefix}WLAN_MODE)" && [ -n "$wlan_mode" ] && \
	496	iwconfig ${device} mode "$wlan_mode"
	497
cbe41687	498	iwconfig ${device} nick ${WLAN_NICKNAME}
7a4d5330 ER	499
	500	val="$(eval echo \$${prefix}WLAN_NWID)" && [ -n "$val" ] && \
	501	iwconfig ${device} nwid "$val"
	502
	503	if [ "$wlan_mode" != "Managed" ]; then
	504	if val="$(eval echo \$${prefix}WLAN_FREQ)" && [ -n "$val" ]; then
	505	iwconfig ${device} freq "$val"
	506	elif val="$(eval echo \$${prefix}WLAN_CHANNEL)" && [ -n "$val" ]; then
	507	iwconfig ${device} channel "$val"
	508	fi
5e6dfc29	509	fi
7a4d5330 ER	510
	511	val="$(eval echo \$${prefix}WLAN_SENS)" && [ -n "$val" ] && \
	512	iwconfig ${device} sens "$val"
	513	val="$(eval echo \$${prefix}WLAN_AP)" && [ -n "$val" ] && \
	514	iwconfig ${device} ap "$val"
	515	val="$(eval echo \$${prefix}WLAN_BITRATE)" && [ -n "$val" ] && \
	516	iwconfig ${device} rate "$val"
	517	val="$(eval echo \$${prefix}WLAN_RTS_THRESHOLD)" && [ -n "$val" ] && \
	518	iwconfig ${device} rts "$val"
	519	val="$(eval echo \$${prefix}WLAN_FRAGMENTATION_THRESHOLD)" && [ -n "$val" ] && \
	520	iwconfig ${device} frag "$val"
	521
	522	if val="$(eval echo \$${prefix}WLAN_KEY)" && [ -n "$val" ]; then
	523	iwconfig ${device} key "$val"
	524	val="$(eval echo \$${prefix}WLAN_ENCRYPTION)" && [ -n "$val" ] && \
	525	iwconfig ${device} key "$val"
	526	fi
	527
5e6dfc29 JR	528	if is_no "$(eval echo \$${prefix}WLAN_ENCRYPTION)"; then
	529	iwconfig ${device} key off
	530	fi
7a4d5330 ER	531	val="$(eval echo \$${prefix}WLAN_POWER)" && [ -n "$val" ] && \
	532	iwconfig ${device} power "$val"
	533	val="$(eval echo \$${prefix}WLAN_TXPOWER)" && [ -n "$val" ] && \
	534	iwconfig ${device} txpower "$val"
	535	val="$(eval echo \$${prefix}WLAN_RETRY)" && [ -n "$val" ] && \
	536	iwconfig ${device} retry "$val"
	537	val="$(eval echo \$${prefix}WLAN_NWID)" && [ -n "$val" ] && \
	538	iwconfig ${device} nwid "$val"
2ae29436	539
9a0f7d04	540	# essid should be last due to network rescanning by wlan devices
7a4d5330 ER	541	val="$(eval echo \$${prefix}WLAN_ESSID)" && [ -n "$val" ] && \
7a4d5330 ER	542	iwconfig ${device} essid "$val"
a1ac348c AM	543
	544	if is_yes "$(eval echo \$${prefix}WLAN_COMMIT)"; then
	545	iwconfig ${device} commit
9a0f7d04	546	fi
2ae29436 AM	547	}
2ae29436 AM	548
0336ea13 AM	549	check_mii_tool ()
0336ea13 AM	550	{
5e6dfc29 JR	551	[ -x /sbin/mii-tool ] \|\| return 2
5e6dfc29 JR	552	output=$(LC_ALL=C mii-tool $1 2>&1)
917c3c39 ER	553	echo $output \| grep -q "link ok" && return 1
917c3c39 ER	554	echo $output \| grep -q "no link" && return 0 \|\| return 2
0336ea13 AM	555	}
	556
	557	check_ethtool ()
	558	{
5e6dfc29 JR	559	[ -x /sbin/ethtool ] \|\| return 2
5e6dfc29 JR	560	output=$(LC_ALL=C ethtool $1 2>&1)
917c3c39 ER	561	echo $output \| grep -q "Link detected: yes" && return 1
917c3c39 ER	562	echo $output \| grep -q "Link detected: no" && return 0 \|\| return 2
0336ea13 AM	563	}
0336ea13 AM	564
1b85f830 AM	565	check_iwconfig ()
	566	{
	567	[ -x /sbin/iwconfig ] \|\| return 2
	568	output=$(LC_ALL=C iwconfig $1 2>&1)
917c3c39	569	echo $output \| grep -q "radio off" && return 0 \|\| return 2
1b85f830	570	}
0336ea13 AM	571
	572	check_link_down ()
	573	{
1b85f830	574	if [ -x /sbin/mii-tool -o -x /sbin/ethtool -o -x /sbin/iwconfig ]; then
5e6dfc29 JR	575	if ! LC_ALL=C ip link show dev $1 2>/dev/null\| grep -q UP ; then
	576	ip link set dev $1 up >/dev/null 2>&1
	577	timeout=0
	578	while [ $timeout -le 10 ]; do
	579	check_mii_tool $1
	580	m=$?
	581	check_ethtool $1
	582	e=$?
1b85f830 AM	583	check_iwconfig $1
1b85f830 AM	584	i=$?
5e6dfc29 JR	585	if [ $m -eq 1 ] \|\| [ $e -eq 1 ] ; then
	586	return 1
	587	fi
1b85f830	588	if [ $m -eq 2 ] && [ $e -eq 2 ] && [ $i -eq 2 ]; then
5e6dfc29 JR	589	return 1
	590	fi
	591	usleep 500000
	592	timeout=$((timeout+1))
	593	done
	594	return 0
74a7f2e4	595	fi
74a7f2e4	596	fi
5e6dfc29	597	return 1
0336ea13	598	}
2ae29436	599
e9e86175	600	# This must be last line !
5e6dfc29	601	# vi:syntax=sh