head	1.2;
access;
symbols
	RELENG_8_4:1.2.0.2
	RELENG_9_1_0_RELEASE:1.1.4.1.4.2
	RELENG_9_1:1.1.4.1.0.4
	RELENG_9_1_BP:1.1.4.1
	RELENG_8_3_0_RELEASE:1.1.2.2.6.1
	RELENG_8_3:1.1.2.2.0.6
	RELENG_8_3_BP:1.1.2.2
	RELENG_9_0_0_RELEASE:1.1.4.1.2.1
	RELENG_9_0:1.1.4.1.0.2
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	RELENG_8_1:1.1.2.2.0.2
	RELENG_8_1_BP:1.1.2.2
	RELENG_8:1.1.0.2;
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desc
@@


1.2
log
@Switching exporter and resync
@
text
@#!/bin/sh
#
# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $
# $FreeBSD: head/release/picobsd/floppy.tree/sbin/dhclient-script 201062 2009-12-27 21:58:48Z luigi $
#
# Copyright (c) 2003 Kenneth R Westerback <krw@@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
#

ARP=/usr/sbin/arp
HOSTNAME=/bin/hostname
IFCONFIG='/sbin/ifconfig -n'

LOCALHOST=127.0.0.1

if [ -x /usr/bin/logger ]; then
	LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
else
	LOGGER=echo
fi

#
# Helper functions that implement common actions.
#

check_hostname() {
	current_hostname=`$HOSTNAME`
	if [ -z "$current_hostname" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	elif [ "$current_hostname" = "$old_host_name" -a \
	       "$new_host_name" != "$old_host_name" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	fi
}

arp_flush() {
	arp -an -i $interface | \
		sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' | \
		sh >/dev/null 2>&1
}

delete_old_address() {
	eval "$IFCONFIG $interface inet -alias $old_ip_address $medium"
}

add_new_address() {
	eval "$IFCONFIG $interface \
		inet $new_ip_address \
		netmask $new_subnet_mask \
		broadcast $new_broadcast_address \
		$medium"

	$LOGGER "New IP Address ($interface): $new_ip_address"
	$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
	$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
	$LOGGER "New Routers ($interface): $new_routers"
}

delete_old_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet -alias $alias_ip_address > /dev/null 2>&1
		#route delete $alias_ip_address $LOCALHOST > /dev/null 2>&1
	fi
}

add_new_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet alias $alias_ip_address netmask \
		    $alias_subnet_mask
		#route add $alias_ip_address $LOCALHOST
	fi
}

fill_classless_routes() {
	set $1
	while [ $# -ge 5 ]; do
		if [ $1 -eq 0 ]; then
			route="default"
		elif [ $1 -le 8 ]; then
			route="$2.0.0.0/$1"
			shift
		elif [ $1 -le 16 ]; then
			route="$2.$3.0.0/$1"
			shift; shift
		elif [ $1 -le 24 ]; then
			route="$2.$3.$4.0/$1"
			shift; shift; shift
		else
			route="$2.$3.$4.$5/$1"
			shift; shift; shift; shift
		fi
		shift
		router="$1.$2.$3.$4"
		classless_routes="$classless_routes $route $router"
		shift; shift; shift; shift
	done
}

delete_old_routes() {
	#route delete "$old_ip_address" $LOCALHOST >/dev/null 2>&1
	if [ -n "$old_classless_routes" ]; then
		fill_classless_routes "$old_classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
		return 0;
	fi

	# If we supported multiple default routes, we'd be removing each
	# one here.  We don't so just delete the default route if it's
	# through our interface.
	if is_default_interface; then
		route delete default >/dev/null 2>&1
	fi

	if [ -n "$old_static_routes" ]; then
		set $old_static_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
	fi

	arp_flush
}

add_new_routes() {
	#route add $new_ip_address $LOCALHOST >/dev/null 2>&1

	# RFC 3442: If the DHCP server returns both a Classless Static
	# Routes option and a Router option, the DHCP client MUST ignore
	# the Router option.
	#
	# DHCP clients that support this option (Classless Static Routes)
	# MUST NOT install the routes specified in the Static Routes
	# option (option code 33) if both a Static Routes option and the
	# Classless Static Routes option are provided.

	if [ -n "$new_classless_routes" ]; then
		fill_classless_routes "$new_classless_routes"
		$LOGGER "New Classless Static Routes ($interface): $classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			if [ "0.0.0.0" = "$2" ]; then
				route add "$1" -iface "$interface"
			else
				route add "$1" "$2"
			fi
			shift; shift
		done
		return
	fi

	for router in $new_routers; do
		if is_default_interface; then

			if [ "$new_ip_address" = "$router" ]; then
				route add default -iface $router >/dev/null 2>&1
			else
				route add default $router >/dev/null 2>&1
			fi
		fi
		# 2nd and subsequent default routers error out, so explicitly
		# stop processing the list after the first one.
		break
	done

	if [ -n "$new_static_routes" ]; then
		$LOGGER "New Static Routes ($interface): $new_static_routes"
		set $new_static_routes
		while [ $# -gt 1 ]; do
			route add $1 $2
			shift; shift
		done
	fi
}

add_new_resolv_conf() {
	# XXX Old code did not create/update resolv.conf unless both
	# $new_domain_name and $new_domain_name_servers were provided.  PR
	# #3135 reported some ISP's only provide $new_domain_name_servers and
	# thus broke the script. This code creates the resolv.conf if either
	# are provided.

	local tmpres=/var/run/resolv.conf.${interface}
	rm -f $tmpres

	if [ -n "$new_domain_name" ]; then
		echo "search $new_domain_name" >>$tmpres
	fi

	if [ -n "$new_domain_name_servers" ]; then
		for nameserver in $new_domain_name_servers; do
			echo "nameserver $nameserver" >>$tmpres
		done
	fi

	if [ -f $tmpres ]; then
		if [ -f /etc/resolv.conf.tail ]; then
			cat /etc/resolv.conf.tail >>$tmpres
		fi

		# When resolv.conf is not changed actually, we don't
		# need to update it.
		# If /usr is not mounted yet, we cannot use cmp, then
		# the following test fails.  In such case, we simply
		# ignore an error and do update resolv.conf.
		if cmp -s $tmpres /etc/resolv.conf; then
			rm -f $tmpres
			return 0
		fi 2>/dev/null

		# In case (e.g. during OpenBSD installs) /etc/resolv.conf
		# is a symbolic link, take care to preserve the link and write
		# the new data in the correct location.

		if [ -f /etc/resolv.conf ]; then
			cat /etc/resolv.conf > /etc/resolv.conf.save
		fi
		cat $tmpres > /etc/resolv.conf
		rm -f $tmpres

		# Try to ensure correct ownership and permissions.
		chown -RL root:wheel /etc/resolv.conf
		chmod -RL 644 /etc/resolv.conf

		return 0
	fi

	return 1
}

# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
	exit_status=$1
	if [ -f /etc/dhclient-exit-hooks ]; then
		. /etc/dhclient-exit-hooks
	fi
	# probably should do something with exit status of the local script
	exit $exit_status
}

# Get the interface with the current ipv4 default route on it using only
# commands that are available prior to /usr being mounted.
is_default_interface()
{
	routeget="`route -n get -inet default`"
	oldifs="$IFS"
	IFS="
"
	defif=
	for line in $routeget ; do
		case $line in
		*interface:*)
			defif=${line##*: }
			;;
		esac
	done
	IFS=${oldifs}

	if [ -z "$defif" -o "$defif" = "$interface" ]; then
		return 0
	else
		return 1
	fi
}

#
# Start of active code.
#

# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
	exit_status=0
	. /etc/dhclient-enter-hooks
	# allow the local script to abort processing of this state
	# local script must set exit_status variable to nonzero.
	if [ $exit_status -ne 0 ]; then
		exit $exit_status
	fi
fi

case $reason in
MEDIUM)
	eval "$IFCONFIG $interface $medium"
	eval "$IFCONFIG $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1
	sleep 1
	;;

PREINIT)
	delete_old_alias
	$IFCONFIG $interface inet alias 0.0.0.0 netmask 0.0.0.0 broadcast 255.255.255.255 up
	;;

ARPCHECK|ARPSEND)
	;;

BOUND|RENEW|REBIND|REBOOT)
	check_hostname
	if [ -n "$old_ip_address" ]; then
		if [ "$old_ip_address" != "$alias_ip_address" ]; then
			delete_old_alias
		fi
		if [ "$old_ip_address" != "$new_ip_address" ]; then
			delete_old_address
			delete_old_routes
		fi
	fi
	if [ "$reason" = BOUND ] || \
	   [ "$reason" = REBOOT ] || \
	   [ -z "$old_ip_address" ] || \
	   [ "$old_ip_address" != "$new_ip_address" ]; then
		add_new_address
		add_new_routes
	fi
	if [ "$new_ip_address" != "$alias_ip_address" ]; then
		add_new_alias
	fi
	if is_default_interface; then
		add_new_resolv_conf
	fi
	;;

EXPIRE|FAIL)
	delete_old_alias
	if [ -n "$old_ip_address" ]; then
		delete_old_address
		delete_old_routes
	fi
	if [ -x $ARP ]; then
		$ARP -d -a -i $interface
	fi
	# XXX Why add alias we just deleted above?
	add_new_alias
	if is_default_interface; then
		if [ -f /etc/resolv.conf.save ]; then
			cat /etc/resolv.conf.save > /etc/resolv.conf
		fi
	fi
	;;

TIMEOUT)
	delete_old_alias
	add_new_address
	sleep 1
	if [ -n "$new_routers" ]; then
		$LOGGER "New Routers ($interface): $new_routers"
		set "$new_routers"
		if ping -q -c 1 -t 1 "$1"; then
			if [ "$new_ip_address" != "$alias_ip_address" ]; then
				add_new_alias
			fi
			add_new_routes
			if ! is_default_interface; then
				exit_with_hooks 0
			fi
			if add_new_resolv_conf; then
				exit_with_hooks 0
			fi
		fi
	fi
	eval "$IFCONFIG $interface inet -alias $new_ip_address $medium"
	delete_old_routes
	exit_with_hooks 1
	;;
esac

exit_with_hooks 0
@


1.2.2.1
log
@file dhclient-script was added on branch RELENG_8_4 on 2013-03-28 13:03:30 +0000
@
text
@d1 384
@


1.2.2.2
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/248810
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a0 384
#!/bin/sh
#
# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $
# $FreeBSD: releng/8.4/release/picobsd/floppy.tree/sbin/dhclient-script 232175 2012-02-26 12:56:12Z brueffer $
#
# Copyright (c) 2003 Kenneth R Westerback <krw@@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
#

ARP=/usr/sbin/arp
HOSTNAME=/bin/hostname
IFCONFIG='/sbin/ifconfig -n'

LOCALHOST=127.0.0.1

if [ -x /usr/bin/logger ]; then
	LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
else
	LOGGER=echo
fi

#
# Helper functions that implement common actions.
#

check_hostname() {
	current_hostname=`$HOSTNAME`
	if [ -z "$current_hostname" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	elif [ "$current_hostname" = "$old_host_name" -a \
	       "$new_host_name" != "$old_host_name" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	fi
}

arp_flush() {
	arp -an -i $interface | \
		sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' | \
		sh >/dev/null 2>&1
}

delete_old_address() {
	eval "$IFCONFIG $interface inet -alias $old_ip_address $medium"
}

add_new_address() {
	eval "$IFCONFIG $interface \
		inet $new_ip_address \
		netmask $new_subnet_mask \
		broadcast $new_broadcast_address \
		$medium"

	$LOGGER "New IP Address ($interface): $new_ip_address"
	$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
	$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
	$LOGGER "New Routers ($interface): $new_routers"
}

delete_old_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet -alias $alias_ip_address > /dev/null 2>&1
		#route delete $alias_ip_address $LOCALHOST > /dev/null 2>&1
	fi
}

add_new_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet alias $alias_ip_address netmask \
		    $alias_subnet_mask
		#route add $alias_ip_address $LOCALHOST
	fi
}

fill_classless_routes() {
	set $1
	while [ $# -ge 5 ]; do
		if [ $1 -eq 0 ]; then
			route="default"
		elif [ $1 -le 8 ]; then
			route="$2.0.0.0/$1"
			shift
		elif [ $1 -le 16 ]; then
			route="$2.$3.0.0/$1"
			shift; shift
		elif [ $1 -le 24 ]; then
			route="$2.$3.$4.0/$1"
			shift; shift; shift
		else
			route="$2.$3.$4.$5/$1"
			shift; shift; shift; shift
		fi
		shift
		router="$1.$2.$3.$4"
		classless_routes="$classless_routes $route $router"
		shift; shift; shift; shift
	done
}

delete_old_routes() {
	#route delete "$old_ip_address" $LOCALHOST >/dev/null 2>&1
	if [ -n "$old_classless_routes" ]; then
		fill_classless_routes "$old_classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
		return 0;
	fi

	# If we supported multiple default routes, we'd be removing each
	# one here.  We don't so just delete the default route if it's
	# through our interface.
	if is_default_interface; then
		route delete default >/dev/null 2>&1
	fi

	if [ -n "$old_static_routes" ]; then
		set $old_static_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
	fi

	arp_flush
}

add_new_routes() {
	#route add $new_ip_address $LOCALHOST >/dev/null 2>&1

	# RFC 3442: If the DHCP server returns both a Classless Static
	# Routes option and a Router option, the DHCP client MUST ignore
	# the Router option.
	#
	# DHCP clients that support this option (Classless Static Routes)
	# MUST NOT install the routes specified in the Static Routes
	# option (option code 33) if both a Static Routes option and the
	# Classless Static Routes option are provided.

	if [ -n "$new_classless_routes" ]; then
		fill_classless_routes "$new_classless_routes"
		$LOGGER "New Classless Static Routes ($interface): $classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			if [ "0.0.0.0" = "$2" ]; then
				route add "$1" -iface "$interface"
			else
				route add "$1" "$2"
			fi
			shift; shift
		done
		return
	fi

	for router in $new_routers; do
		if is_default_interface; then

			if [ "$new_ip_address" = "$router" ]; then
				route add default -iface $router >/dev/null 2>&1
			else
				route add default $router >/dev/null 2>&1
			fi
		fi
		# 2nd and subsequent default routers error out, so explicitly
		# stop processing the list after the first one.
		break
	done

	if [ -n "$new_static_routes" ]; then
		$LOGGER "New Static Routes ($interface): $new_static_routes"
		set $new_static_routes
		while [ $# -gt 1 ]; do
			route add $1 $2
			shift; shift
		done
	fi
}

add_new_resolv_conf() {
	# XXX Old code did not create/update resolv.conf unless both
	# $new_domain_name and $new_domain_name_servers were provided.  PR
	# #3135 reported some ISP's only provide $new_domain_name_servers and
	# thus broke the script. This code creates the resolv.conf if either
	# are provided.

	local tmpres=/var/run/resolv.conf.${interface}
	rm -f $tmpres

	if [ -n "$new_domain_name" ]; then
		echo "search $new_domain_name" >>$tmpres
	fi

	if [ -n "$new_domain_name_servers" ]; then
		for nameserver in $new_domain_name_servers; do
			echo "nameserver $nameserver" >>$tmpres
		done
	fi

	if [ -f $tmpres ]; then
		if [ -f /etc/resolv.conf.tail ]; then
			cat /etc/resolv.conf.tail >>$tmpres
		fi

		# When resolv.conf is not changed actually, we don't
		# need to update it.
		# If /usr is not mounted yet, we cannot use cmp, then
		# the following test fails.  In such case, we simply
		# ignore an error and do update resolv.conf.
		if cmp -s $tmpres /etc/resolv.conf; then
			rm -f $tmpres
			return 0
		fi 2>/dev/null

		# In case (e.g. during OpenBSD installs) /etc/resolv.conf
		# is a symbolic link, take care to preserve the link and write
		# the new data in the correct location.

		if [ -f /etc/resolv.conf ]; then
			cat /etc/resolv.conf > /etc/resolv.conf.save
		fi
		cat $tmpres > /etc/resolv.conf
		rm -f $tmpres

		# Try to ensure correct ownership and permissions.
		chown -RL root:wheel /etc/resolv.conf
		chmod -RL 644 /etc/resolv.conf

		return 0
	fi

	return 1
}

# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
	exit_status=$1
	if [ -f /etc/dhclient-exit-hooks ]; then
		. /etc/dhclient-exit-hooks
	fi
	# probably should do something with exit status of the local script
	exit $exit_status
}

# Get the interface with the current ipv4 default route on it using only
# commands that are available prior to /usr being mounted.
is_default_interface()
{
	routeget="`route -n get -inet default`"
	oldifs="$IFS"
	IFS="
"
	defif=
	for line in $routeget ; do
		case $line in
		*interface:*)
			defif=${line##*: }
			;;
		esac
	done
	IFS=${oldifs}

	if [ -z "$defif" -o "$defif" = "$interface" ]; then
		return 0
	else
		return 1
	fi
}

#
# Start of active code.
#

# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
	exit_status=0
	. /etc/dhclient-enter-hooks
	# allow the local script to abort processing of this state
	# local script must set exit_status variable to nonzero.
	if [ $exit_status -ne 0 ]; then
		exit $exit_status
	fi
fi

case $reason in
MEDIUM)
	eval "$IFCONFIG $interface $medium"
	eval "$IFCONFIG $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1
	sleep 1
	;;

PREINIT)
	delete_old_alias
	$IFCONFIG $interface inet alias 0.0.0.0 netmask 0.0.0.0 broadcast 255.255.255.255 up
	;;

ARPCHECK|ARPSEND)
	;;

BOUND|RENEW|REBIND|REBOOT)
	check_hostname
	if [ -n "$old_ip_address" ]; then
		if [ "$old_ip_address" != "$alias_ip_address" ]; then
			delete_old_alias
		fi
		if [ "$old_ip_address" != "$new_ip_address" ]; then
			delete_old_address
			delete_old_routes
		fi
	fi
	if [ "$reason" = BOUND ] || \
	   [ "$reason" = REBOOT ] || \
	   [ -z "$old_ip_address" ] || \
	   [ "$old_ip_address" != "$new_ip_address" ]; then
		add_new_address
		add_new_routes
	fi
	if [ "$new_ip_address" != "$alias_ip_address" ]; then
		add_new_alias
	fi
	if is_default_interface; then
		add_new_resolv_conf
	fi
	;;

EXPIRE|FAIL)
	delete_old_alias
	if [ -n "$old_ip_address" ]; then
		delete_old_address
		delete_old_routes
	fi
	if [ -x $ARP ]; then
		$ARP -d -a -i $interface
	fi
	# XXX Why add alias we just deleted above?
	add_new_alias
	if is_default_interface; then
		if [ -f /etc/resolv.conf.save ]; then
			cat /etc/resolv.conf.save > /etc/resolv.conf
		fi
	fi
	;;

TIMEOUT)
	delete_old_alias
	add_new_address
	sleep 1
	if [ -n "$new_routers" ]; then
		$LOGGER "New Routers ($interface): $new_routers"
		set "$new_routers"
		if ping -q -c 1 -t 1 "$1"; then
			if [ "$new_ip_address" != "$alias_ip_address" ]; then
				add_new_alias
			fi
			add_new_routes
			if ! is_default_interface; then
				exit_with_hooks 0
			fi
			if add_new_resolv_conf; then
				exit_with_hooks 0
			fi
		fi
	fi
	eval "$IFCONFIG $interface inet -alias $new_ip_address $medium"
	delete_old_routes
	exit_with_hooks 1
	;;
esac

exit_with_hooks 0
@


1.1
log
@SVN rev 201062 on 2009-12-27 21:58:48Z by luigi

add a 'qemu' floppy type, useful for running tests on new kernels
@
text
@d4 1
a4 1
# $FreeBSD$
@


1.1.4.1
log
@SVN rev 225736 on 2011-09-23 00:51:37Z by kensmith

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by:	re (implicit)
@
text
@@


1.1.4.2
log
@## SVN ##
## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/ 242902
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ## r242902 | dteske | 2012-11-11 23:29:45 +0000 (Sun, 11 Nov 2012) | 10 lines
## SVN ##
## SVN ## Fix a regression introduced by SVN r211417 that saw the breakage of a feature
## SVN ## documented in usr.sbin/sysinstall/help/shortcuts.hlp (reproduced below):
## SVN ##
## SVN ## If /usr/sbin/sysinstall is linked to another filename, say
## SVN ## `/usr/local/bin/configPackages', then the basename will be used
## SVN ## as an implicit command name.
## SVN ##
## SVN ## Reviewed by:	adrian (co-mentor)
## SVN ## Approved by:	adrian (co-mentor)
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ##
@
text
@d4 1
a4 1
# $FreeBSD: stable/9/release/picobsd/floppy.tree/sbin/dhclient-script 201062 2009-12-27 21:58:48Z luigi $
@


1.1.4.1.4.1
log
@SVN rev 239080 on 2012-08-05 23:54:33Z by kensmith

Copy stable/9 to releng/9.1 as part of the 9.1-RELEASE release process.

Approved by:	re (implicit)
@
text
@@


1.1.4.1.4.2
log
@Switch importer
@
text
@d4 1
a4 1
# $FreeBSD: releng/9.1/release/picobsd/floppy.tree/sbin/dhclient-script 201062 2009-12-27 21:58:48Z luigi $
@


1.1.4.1.2.1
log
@SVN rev 227445 on 2011-11-11 04:20:22Z by kensmith

Copy stable/9 to releng/9.0 as part of the FreeBSD 9.0-RELEASE release
cycle.

Approved by:	re (implicit)
@
text
@@


1.1.4.1.2.2
log
@Switch importer
@
text
@d4 1
a4 1
# $FreeBSD: releng/9.0/release/picobsd/floppy.tree/sbin/dhclient-script 201062 2009-12-27 21:58:48Z luigi $
@


1.1.2.1
log
@file dhclient-script was added on branch RELENG_8 on 2010-03-15 17:54:13 +0000
@
text
@d1 384
@


1.1.2.2
log
@SVN rev 205175 on 2010-03-15 17:54:01Z by luigi

and wrong place too!
@
text
@a0 384
#!/bin/sh
#
# $OpenBSD: dhclient-script,v 1.6 2004/05/06 18:22:41 claudio Exp $
# $FreeBSD$
#
# Copyright (c) 2003 Kenneth R Westerback <krw@@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
#

ARP=/usr/sbin/arp
HOSTNAME=/bin/hostname
IFCONFIG='/sbin/ifconfig -n'

LOCALHOST=127.0.0.1

if [ -x /usr/bin/logger ]; then
	LOGGER="/usr/bin/logger -s -p user.notice -t dhclient"
else
	LOGGER=echo
fi

#
# Helper functions that implement common actions.
#

check_hostname() {
	current_hostname=`$HOSTNAME`
	if [ -z "$current_hostname" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	elif [ "$current_hostname" = "$old_host_name" -a \
	       "$new_host_name" != "$old_host_name" ]; then
		$LOGGER "New Hostname ($interface): $new_host_name"
		$HOSTNAME $new_host_name
	fi
}

arp_flush() {
	arp -an -i $interface | \
		sed -n -e 's/^.*(\(.*\)) at .*$/arp -d \1/p' | \
		sh >/dev/null 2>&1
}

delete_old_address() {
	eval "$IFCONFIG $interface inet -alias $old_ip_address $medium"
}

add_new_address() {
	eval "$IFCONFIG $interface \
		inet $new_ip_address \
		netmask $new_subnet_mask \
		broadcast $new_broadcast_address \
		$medium"

	$LOGGER "New IP Address ($interface): $new_ip_address"
	$LOGGER "New Subnet Mask ($interface): $new_subnet_mask"
	$LOGGER "New Broadcast Address ($interface): $new_broadcast_address"
	$LOGGER "New Routers ($interface): $new_routers"
}

delete_old_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet -alias $alias_ip_address > /dev/null 2>&1
		#route delete $alias_ip_address $LOCALHOST > /dev/null 2>&1
	fi
}

add_new_alias() {
	if [ -n "$alias_ip_address" ]; then
		$IFCONFIG $interface inet alias $alias_ip_address netmask \
		    $alias_subnet_mask
		#route add $alias_ip_address $LOCALHOST
	fi
}

fill_classless_routes() {
	set $1
	while [ $# -ge 5 ]; do
		if [ $1 -eq 0 ]; then
			route="default"
		elif [ $1 -le 8 ]; then
			route="$2.0.0.0/$1"
			shift
		elif [ $1 -le 16 ]; then
			route="$2.$3.0.0/$1"
			shift; shift
		elif [ $1 -le 24 ]; then
			route="$2.$3.$4.0/$1"
			shift; shift; shift
		else
			route="$2.$3.$4.$5/$1"
			shift; shift; shift; shift
		fi
		shift
		router="$1.$2.$3.$4"
		classless_routes="$classless_routes $route $router"
		shift; shift; shift; shift
	done
}

delete_old_routes() {
	#route delete "$old_ip_address" $LOCALHOST >/dev/null 2>&1
	if [ -n "$old_classless_routes" ]; then
		fill_classless_routes "$old_classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
		return 0;
	fi

	# If we supported multiple default routes, we'd be removing each
	# one here.  We don't so just delete the default route if it's
	# through our interface.
	if is_default_interface; then
		route delete default >/dev/null 2>&1
	fi

	if [ -n "$old_static_routes" ]; then
		set $old_static_routes
		while [ $# -gt 1 ]; do
			route delete "$1" "$2"
			shift; shift
		done
	fi

	arp_flush
}

add_new_routes() {
	#route add $new_ip_address $LOCALHOST >/dev/null 2>&1

	# RFC 3442: If the DHCP server returns both a Classless Static
	# Routes option and a Router option, the DHCP client MUST ignore
	# the Router option.
	#
	# DHCP clients that support this option (Classless Static Routes)
	# MUST NOT install the routes specified in the Static Routes
	# option (option code 33) if both a Static Routes option and the
	# Classless Static Routes option are provided.

	if [ -n "$new_classless_routes" ]; then
		fill_classless_routes "$new_classless_routes"
		$LOGGER "New Classless Static Routes ($interface): $classless_routes"
		set $classless_routes
		while [ $# -gt 1 ]; do
			if [ "0.0.0.0" = "$2" ]; then
				route add "$1" -iface "$interface"
			else
				route add "$1" "$2"
			fi
			shift; shift
		done
		return
	fi

	for router in $new_routers; do
		if is_default_interface; then

			if [ "$new_ip_address" = "$router" ]; then
				route add default -iface $router >/dev/null 2>&1
			else
				route add default $router >/dev/null 2>&1
			fi
		fi
		# 2nd and subsequent default routers error out, so explicitly
		# stop processing the list after the first one.
		break
	done

	if [ -n "$new_static_routes" ]; then
		$LOGGER "New Static Routes ($interface): $new_static_routes"
		set $new_static_routes
		while [ $# -gt 1 ]; do
			route add $1 $2
			shift; shift
		done
	fi
}

add_new_resolv_conf() {
	# XXX Old code did not create/update resolv.conf unless both
	# $new_domain_name and $new_domain_name_servers were provided.  PR
	# #3135 reported some ISP's only provide $new_domain_name_servers and
	# thus broke the script. This code creates the resolv.conf if either
	# are provided.

	local tmpres=/var/run/resolv.conf.${interface}
	rm -f $tmpres

	if [ -n "$new_domain_name" ]; then
		echo "search $new_domain_name" >>$tmpres
	fi

	if [ -n "$new_domain_name_servers" ]; then
		for nameserver in $new_domain_name_servers; do
			echo "nameserver $nameserver" >>$tmpres
		done
	fi

	if [ -f $tmpres ]; then
		if [ -f /etc/resolv.conf.tail ]; then
			cat /etc/resolv.conf.tail >>$tmpres
		fi

		# When resolv.conf is not changed actually, we don't
		# need to update it.
		# If /usr is not mounted yet, we cannot use cmp, then
		# the following test fails.  In such case, we simply
		# ignore an error and do update resolv.conf.
		if cmp -s $tmpres /etc/resolv.conf; then
			rm -f $tmpres
			return 0
		fi 2>/dev/null

		# In case (e.g. during OpenBSD installs) /etc/resolv.conf
		# is a symbolic link, take care to preserve the link and write
		# the new data in the correct location.

		if [ -f /etc/resolv.conf ]; then
			cat /etc/resolv.conf > /etc/resolv.conf.save
		fi
		cat $tmpres > /etc/resolv.conf
		rm -f $tmpres

		# Try to ensure correct ownership and permissions.
		chown -RL root:wheel /etc/resolv.conf
		chmod -RL 644 /etc/resolv.conf

		return 0
	fi

	return 1
}

# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
	exit_status=$1
	if [ -f /etc/dhclient-exit-hooks ]; then
		. /etc/dhclient-exit-hooks
	fi
	# probably should do something with exit status of the local script
	exit $exit_status
}

# Get the interface with the current ipv4 default route on it using only
# commands that are available prior to /usr being mounted.
is_default_interface()
{
	routeget="`route -n get -inet default`"
	oldifs="$IFS"
	IFS="
"
	defif=
	for line in $routeget ; do
		case $line in
		*interface:*)
			defif=${line##*: }
			;;
		esac
	done
	IFS=${oldifs}

	if [ -z "$defif" -o "$defif" = "$interface" ]; then
		return 0
	else
		return 1
	fi
}

#
# Start of active code.
#

# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
	exit_status=0
	. /etc/dhclient-enter-hooks
	# allow the local script to abort processing of this state
	# local script must set exit_status variable to nonzero.
	if [ $exit_status -ne 0 ]; then
		exit $exit_status
	fi
fi

case $reason in
MEDIUM)
	eval "$IFCONFIG $interface $medium"
	eval "$IFCONFIG $interface inet -alias 0.0.0.0 $medium" >/dev/null 2>&1
	sleep 1
	;;

PREINIT)
	delete_old_alias
	$IFCONFIG $interface inet alias 0.0.0.0 netmask 0.0.0.0 broadcast 255.255.255.255 up
	;;

ARPCHECK|ARPSEND)
	;;

BOUND|RENEW|REBIND|REBOOT)
	check_hostname
	if [ -n "$old_ip_address" ]; then
		if [ "$old_ip_address" != "$alias_ip_address" ]; then
			delete_old_alias
		fi
		if [ "$old_ip_address" != "$new_ip_address" ]; then
			delete_old_address
			delete_old_routes
		fi
	fi
	if [ "$reason" = BOUND ] || \
	   [ "$reason" = REBOOT ] || \
	   [ -z "$old_ip_address" ] || \
	   [ "$old_ip_address" != "$new_ip_address" ]; then
		add_new_address
		add_new_routes
	fi
	if [ "$new_ip_address" != "$alias_ip_address" ]; then
		add_new_alias
	fi
	if is_default_interface; then
		add_new_resolv_conf
	fi
	;;

EXPIRE|FAIL)
	delete_old_alias
	if [ -n "$old_ip_address" ]; then
		delete_old_address
		delete_old_routes
	fi
	if [ -x $ARP ]; then
		$ARP -d -a -i $interface
	fi
	# XXX Why add alias we just deleted above?
	add_new_alias
	if is_default_interface; then
		if [ -f /etc/resolv.conf.save ]; then
			cat /etc/resolv.conf.save > /etc/resolv.conf
		fi
	fi
	;;

TIMEOUT)
	delete_old_alias
	add_new_address
	sleep 1
	if [ -n "$new_routers" ]; then
		$LOGGER "New Routers ($interface): $new_routers"
		set "$new_routers"
		if ping -q -c 1 -t 1 "$1"; then
			if [ "$new_ip_address" != "$alias_ip_address" ]; then
				add_new_alias
			fi
			add_new_routes
			if ! is_default_interface; then
				exit_with_hooks 0
			fi
			if add_new_resolv_conf; then
				exit_with_hooks 0
			fi
		fi
	fi
	eval "$IFCONFIG $interface inet -alias $new_ip_address $medium"
	delete_old_routes
	exit_with_hooks 1
	;;
esac

exit_with_hooks 0
@


1.1.2.3
log
@## SVN ##
## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/ 242909
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ## r242909 | dim | 2012-11-12 07:47:19 +0000 (Mon, 12 Nov 2012) | 20 lines
## SVN ##
## SVN ## MFC r242625:
## SVN ##
## SVN ## Remove duplicate const specifiers in many drivers (I hope I got all of
## SVN ## them, please let me know if not).  Most of these are of the form:
## SVN ##
## SVN ## static const struct bzzt_type {
## SVN ##       [...list of members...]
## SVN ## } const bzzt_devs[] = {
## SVN ##       [...list of initializers...]
## SVN ## };
## SVN ##
## SVN ## The second const is unnecessary, as arrays cannot be modified anyway,
## SVN ## and if the elements are const, the whole thing is const automatically
## SVN ## (e.g. it is placed in .rodata).
## SVN ##
## SVN ## I have verified this does not change the binary output of a full kernel
## SVN ## build (except for build timestamps embedded in the object files).
## SVN ##
## SVN ## Reviewed by:	yongari, marius
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ##
@
text
@d4 1
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# $FreeBSD: stable/8/release/picobsd/floppy.tree/sbin/dhclient-script 232175 2012-02-26 12:56:12Z brueffer $
@


1.1.2.2.6.1
log
@SVN rev 232438 on 2012-03-03 06:15:13Z by kensmith

Copy stable/8 to releng/8.3 as part of 8.3-RELEASE release cycle.

Approved by:	re (implicit)
@
text
@@


1.1.2.2.6.2
log
@Switch importer
@
text
@d4 1
a4 1
# $FreeBSD: releng/8.3/release/picobsd/floppy.tree/sbin/dhclient-script 232175 2012-02-26 12:56:12Z brueffer $
@


1.1.2.2.4.1
log
@SVN rev 216617 on 2010-12-21 17:09:25Z by kensmith

Copy stable/8 to releng/8.2 in preparation for FreeBSD-8.2 release.

Approved by:	re (implicit)
@
text
@@


1.1.2.2.2.1
log
@SVN rev 209145 on 2010-06-14 02:09:06Z by kensmith

Copy stable/8 to releng/8.1 in preparation for 8.1-RC1.

Approved by:	re (implicit)
@
text
@@


