#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# ident	"%Z%%M%	%I%	%E% SMI"

#
# This is the second phase of TCP/IP configuration.  The first part is
# run by the /lib/svc/method/net-physical script (the svc:/network/physical 
# service) and includes configuring the interfaces and setting the machine's
# hostname.  This script (the svc:/network/initial service), does all
# configuration that can be done before name services are started. This
# includes configuring IP routing, and setting any tunable parameters.
# The third part, run by the /lib/svc/method/net-svc script (the
# svc:/network/service service), does all configuration that may require
# name services.  This includes a final re-configuration of the interfaces.
#

. /lib/svc/share/smf_include.sh

case "$1" in
'start')
	#
	# In a zone we need this service to be up, but all of the work
	# it tries to do is irrelevant (and will actually lead to the service
	# failing if we try to do it), so just bail out.
	#
	if [ `/sbin/zonename` != "global" ]; then
		exit 0
	fi
	;; # Fall through -- rest of script is the initialization code

'stop')
	if [ `/sbin/zonename` != "global" ]; then
		exit 0
	fi
	#
	# If we were routing dynamically, we will note this with
	# the .dynamic_routing file, so that we can leave the routes
	# in place without thinking they're static route entries
	# when we come back into states 2 or 3.
	#
	if /usr/bin/pgrep -x -u 0 'in.routed|in.rdisc' >/dev/null 2>&1; then
		/usr/bin/pkill -z `/sbin/zonename` -x -u 0 'in.routed|in.rdisc'
		> /etc/.dynamic_routing
	fi
	/usr/bin/pkill -z `/sbin/zonename` -x -u 0 'in.ndpd|in.ripngd'
	exit 0
	;;

*)
	echo "Usage: $0 { start | stop }"
	exit 1
	;;
esac

# Configure IPv6 Default Address Selection.
if [ -f /etc/inet/ipaddrsel.conf ]; then
	/usr/sbin/ipaddrsel -f /etc/inet/ipaddrsel.conf
fi

/usr/sbin/ifconfig -a6u >/etc/svc/volatile/ifconfig.$$
numv6ifs=`/usr/bin/grep -c inet6 /etc/svc/volatile/ifconfig.$$`
if  [ $numv6ifs -gt 1 ]; then
	#
	# Add a static route for multicast packets out of a link-local
	# interface, although would like to specify multicast interface using
	# an interface name!
	#
	set -- `/usr/bin/awk '
		/inet6 fe80:/ {
			print substr($2, 1, index($2, "/") - 1)
		}' /etc/svc/volatile/ifconfig.$$`

	if [ -n "$1" ]; then
		echo "Setting default IPv6 interface for multicast:" \
		    "add net ff00::/8: gateway $1"
		/usr/sbin/route -n add -interface -inet6 "ff00::/8" "$1" \
		    >/dev/null
	fi
fi
/usr/bin/rm -f /etc/svc/volatile/ifconfig.$$

#
# Now that /usr is mounted, see if in.mpathd needs to be started by firing it
# up in "adopt" mode; if there are no interfaces it needs to manage, it will
# automatically exit.  Note that it may already be running if we're not
# executing as part of system boot.
#
/usr/bin/pgrep -x -u 0 in.mpathd >/dev/null 2>&1 || /usr/lib/inet/in.mpathd -a

#
# Pass to the kernel the list of supported IPsec protocols and algorithms.
# This will not cause IPsec to be loaded.
#
/usr/sbin/ipsecalgs -s

#
# Initialize IPsec only if ipsecinit.conf exists.  Otherwise, save the
# kernel memory that'll be consumed if IPsec is loaded.  See below for more
# IPsec-related commands.
#
if [ -f /etc/inet/ipsecinit.conf ] ; then
	/usr/sbin/ipsecconf -qa /etc/inet/ipsecinit.conf
fi

#
# Set the RFC 1948 entropy, regardless of if I'm using it or not.  If present,
# use the encrypted root password as a source of entropy.  Otherwise,
# just use the pre-set (and hopefully difficult to guess) entropy that
# tcp used when it loaded.
#
encr=`/usr/bin/awk -F: '/^root:/ {print $2}' /etc/shadow`
[ -z "$encr" ] || /usr/sbin/ndd -set /dev/tcp tcp_1948_phrase $encr
unset encr

#
# Get values for TCP_STRONG_ISS, ACCEPT6TO4RELAY and RELAY6TO4ADDR.
#
[ -f /etc/default/inetinit ] && . /etc/default/inetinit

#
# Set TCP ISS generation.  By default the ISS generation is
# time + random()-delta.  This might not be strong enough for some users.
# See /etc/default/inetinit for settings and further info on TCP_STRONG_ISS.
# If not set, use TCP's internal default setting.
#
if [ $TCP_STRONG_ISS ]; then
	/usr/sbin/ndd -set /dev/tcp tcp_strong_iss $TCP_STRONG_ISS
fi

#
# Configure default IPv4 routers using the local "/etc/defaultrouter"
# configuration file.  The file can contain the hostnames or IP
# addresses of one or more default routers.  If hostnames are used,
# each hostname must also be listed in the local "/etc/hosts" file
# because NIS and NIS+ are not running at the time that this script is
# run.  Each router name or address is listed on a single line by
# itself in the file.  Anything else on that line after the router's
# name or address is ignored.  Lines that begin with "#" are
# considered comments and ignored.
#
# The default routes listed in the "/etc/defaultrouter" file will
# replace those added by the kernel during diskless booting.  An
# empty "/etc/defaultrouter" file will cause the default route
# added by the kernel to be deleted.
#
# Note that the default router file is ignored if we received routes
# from a DHCP server.  Our policy is to always trust DHCP over local
# administration.
#
smf_netstrategy

if [ "$_INIT_NET_STRATEGY" = "dhcp" ] && [ -n "`/sbin/dhcpinfo Router`" ]; then
	defrouters=`/sbin/dhcpinfo Router`
elif [ -f /etc/defaultrouter ]; then
	defrouters=`/usr/bin/grep -v \^\# /etc/defaultrouter | \
	    /usr/bin/awk '{print $1}'`
	if [ -n "$defrouters" ]; then
		#
		# We want the default router(s) listed in /etc/defaultrouter
		# to replace the one added from the BOOTPARAMS WHOAMI response
		# but we must avoid flushing the last route between the running
		# system and its /usr file system.
		#

		# First, remember the original route.
		shift $#
		set -- `/usr/bin/netstat -rn -f inet | /usr/bin/grep '^default'`
		route_IP="$2"

		#
		# Next, add those from /etc/defaultrouter.  While doing this,
		# if one of the routes we add is for the route previously
		# added as a result of the BOOTPARAMS response, we will see
		# a message of the form:
		#	"add net default: gateway a.b.c.d: entry exists"
		#
		do_delete=yes
		for router in $defrouters; do
			set -- `/usr/sbin/route -n add default -gateway $router`
			[ $? -ne 0 -a "x$5" = "x$route_IP:" ] && do_delete=no
		done

		#
		# Finally, delete the original default route unless it was
		# also listed in the defaultrouter file.
		#
		if [ -n "$route_IP" -a $do_delete = yes ]; then
			/usr/sbin/route -n delete default -gateway $route_IP \
			    >/dev/null
		fi
	else
		/usr/sbin/route -fn > /dev/null
	fi
else
	defrouters=
fi

# Make a first pass through /etc/inet/static_routes, attempting to add
# each route.  Ignore any errors since this will be attempted again once
# the tunnels are up.
#
if [ -f /etc/inet/static_routes ]; then
	/usr/bin/egrep -v "^(#|$)" /etc/inet/static_routes | while read line; do
                /usr/sbin/route add $line
	done > /dev/null 2>&1
fi

#
# Use routeadm(1M) to configure forwarding and launch routing daemons for
# IPv4 and IPv6 based on preset values.  These settings only apply to the
# global zone.  For IPv4 dynamic routing, the system will default to
# disabled if a default route was previously added via BOOTP, DHCP, or
# the /etc/defaultrouter file.  routeadm also starts in.ndpd.
#
if [ ! -f /etc/.dynamic_routing ] && [ -z "$defrouters" ]; then
	#
	# No default routes were setup by "route" command above.
	# Check the kernel routing table for any other default
	# routes.
	#
	/usr/bin/netstat -rn -f inet | \
	    /usr/bin/grep default >/dev/null 2>&1 && defrouters=yes
fi
[ -f /etc/.dynamic_routing ] && /usr/bin/rm -f /etc/.dynamic_routing
if [ -z "$defrouters" ]; then
	routeadmstr="-e ipv4-routing"
else
	routeadmstr="-d ipv4-routing"
fi
#
# The -b option used here tells routeadm that the ipv4-routing
# option in $routeadmstr is the boot-time default.  The
# boot-time default is used if the administrator has not
# explicitly enabled or disabled ipv4-routing using the -e or
# -d routeadm option.
#
/usr/sbin/routeadm -u -b $routeadmstr

#
# In spite of global policy, there may be a need for IPsec because of
# per-socket policy or tunnelled policy.  With that in mind, check for manual
# keys in /etc/inet/secret/ipseckeys, or check for IKE configuration in
# /etc/inet/ike/config.  Either of these will also load and initialize IPsec,
# thereby consuming kernel memory.
#

if [ -f /etc/inet/secret/ipseckeys ] ; then
	/usr/sbin/ipseckey -f /etc/inet/secret/ipseckeys
fi

if [ -f /etc/inet/ike/config ] ; then
	/usr/lib/inet/in.iked
fi

#
# Configure tunnels which were deferred by /lib/svc/method/net-physical
# (the svc:/network/physical service) since it depends on the tunnel endpoints
# being reachable i.e. routing must be running.
#
# WARNING: you may wish to turn OFF forwarding if you haven't already, because
# of various possible security vulnerabilities when configuring tunnels for
# Virtual Private Network (VPN) construction.
#
# Also, if names are used in the /etc/hostname.ip.tun* file, those names
# have to be in either DNS (and DNS is used) or in /etc/hosts, because this
# file is executed before NIS or NIS+ is started.
#

#
# IPv4 tunnels
# The second component of the name must be either "ip" or "ip6".
#
interface_names="`/usr/bin/ls /etc/hostname.ip*.*[0-9] 2>/dev/null | \
    /usr/bin/grep '/etc/hostname\.ip6\{0,1\}\.'`"
if [ -n "$interface_names" ]; then
	(
		echo "configuring IPv4 tunnels:\c"
		# Extract the part after the first '.'
		set -- `for intr in $interface_names; do \
		    /usr/bin/expr //$intr : '[^.]*\.\(.*\)$'; done`
		while [ $# -ge 1 ]; do
			# Skip empty files
			if [ ! -s /etc/hostname\.$1 ]; then
				shift
				continue
			fi
			/usr/sbin/ifconfig $1 plumb
			while read ifcmds; do
				if [ -n "$ifcmds" ]; then
					/usr/sbin/ifconfig $1 inet $ifcmds
				fi
			done </etc/hostname\.$1 >/dev/null
			echo " $1\c"
			shift
		done
		echo "."
	)
fi

#
# IPv6 Tunnels
# The second component of the name must be either "ip" or "ip6".
#
interface_names="`/usr/bin/ls /etc/hostname6.ip*.*[0-9] 2>/dev/null | \
    /usr/bin/grep '/etc/hostname6\.ip6\{0,1\}\.'`"
if [ -n "$interface_names" ]; then
	(
		echo "configuring IPv6 tunnels:\c"
		# Extract the part after the first '.'
		set -- `for intr in $interface_names; do \
		    /usr/bin/expr //$intr : '[^.]*\.\(.*\)$'; done`
		while [ $# -ge 1 ]; do
			# Skip empty files
			if [ ! -s /etc/hostname6\.$1 ]; then
				shift
				continue
			fi
			/usr/sbin/ifconfig $1 inet6 plumb
			while read ifcmds; do
				if [ -n "$ifcmds" ]; then
					/usr/sbin/ifconfig $1 inet6 $ifcmds
				fi
			done </etc/hostname6\.$1 > /dev/null
			echo " $1\c"
			shift
		done
		echo "."
	)
fi

#
# Set 6to4 Relay Router communication support policy and, if applicable,
# the destination Relay Router IPv4 address.  See /etc/default/inetinit for
# setting and further info on ACCEPT6TO4RELAY and RELAY6TO4ADDR.
# If ACCEPT6TO4RELAY=NO, the default value in the kernel will
# be used.
#
ACCEPT6TO4RELAY=`echo "$ACCEPT6TO4RELAY" | /usr/bin/tr '[A-Z]' '[a-z]'`
if [ "$ACCEPT6TO4RELAY" = yes ]; then
        if [ "$RELAY6TO4ADDR" ]; then
                /usr/sbin/6to4relay -e -a $RELAY6TO4ADDR
        else
                /usr/sbin/6to4relay -e
        fi
fi

#
# Make a second pass through /etc/inet/static_routes, attempting to add
# each route.  This time, any errors except those for duplicates entries
# are reported.
#
if [ -f /etc/inet/static_routes ]; then
	/usr/bin/egrep -v "^(#|$)" /etc/inet/static_routes | while read line; do
		/usr/sbin/route add $line
	done | /usr/bin/egrep -v "^[^:]+:[^:]+(: entry exists)?\$" >\
	    /dev/msglog 2>&1
fi

# Clear exit status.
exit 0