#!/sbin/sh
#
# Copyright (c) 1995, 1997-1998 by Sun Microsystems, Inc.
# All rights reserved.
#
#ident	"@(#)inetsvc	1.22	98/07/06 SMI"

#
# This is third phase of TCP/IP startup/configuration.  This script
# runs after the NIS/NIS+ startup script.  We run things here that may
# depend on NIS/NIS+ maps.
#

case "$1" in
'start')
	;; # Fall through -- rest of script is the initialization code

'stop')
	/usr/bin/pkill -x -u 0 'in.named|inetd'
	exit 0
	;;

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

# If boot variables are not set, set variables we use

[ -z "$_INIT_UTS_NODENAME" ] && _INIT_UTS_NODENAME=`/usr/bin/uname -n`

if [ -z "$_INIT_PREV_LEVEL" ]; then
	set -- `/usr/bin/who -r`
	_INIT_PREV_LEVEL="$9"
fi

#
# wait_nis
# Wait up to 5 seconds for ypbind to obtain a binding.
#

wait_nis ()
{
	for i in 1 2 3 4 5; do
		server=`/usr/bin/ypwhich 2>/dev/null`
		[ $? -eq 0 -a -n "$server" ] && return 0 || sleep 1
	done
	return 1
}

# We now need to reset the netmask and broadcast address for our network
# interfaces.  Since this may result in a name service lookup, we want to
# now wait for NIS to come up if we previously started it.

domain=`/usr/bin/domainname 2>/dev/null`

[ -z "$domain" ] || [ ! -d /var/yp/binding/$domain ] || wait_nis || \
    echo "WARNING: Timed out waiting for NIS to come up" >& 2

# Re-set the netmask and broadcast addr for all IP interfaces.  This ifconfig
# is run here, after waiting for name services, so that "netmask +" will find
# the netmask if it lives in a NIS map. The 'D' in -auD tells ifconfig NOT to
# mess with the interface if it is under DHCP control

/usr/sbin/ifconfig -auD netmask + broadcast +

# Uncomment these lines to print complete network interface configuration

#echo "network interface configuration:"
#/usr/sbin/ifconfig -a

# If this machine is configured to be an Internet Domain Name System (DNS)
# server, run the name daemon.  Start named prior to: route add net host,
# to avoid dns gethostbyname timout delay for nameserver during boot.

#if [ -f /usr/sbin/in.named -a -f /etc/named.conf ]; then
#	echo 'starting internet domain name server.'
#	/usr/sbin/in.named &
#fi

if [ -z "$_INIT_PREV_LEVEL" -o "$_INIT_PREV_LEVEL" != S -o \
    "$_INIT_PREV_LEVEL" != 1 ]; then

	# Remove tmp file if we've already booted up past rc2
	/usr/bin/rm -f /tmp/.notdhcp
fi

if [ "x`echo /etc/dhcp.*[0-9]`" = 'x/etc/dhcp.*[0-9]' -o \
    -f /tmp/.notdhcp ]; then

	# Remove tmp file since this is the last time we check for it
	/usr/bin/rm -f /tmp/.notdhcp &

	dnsdomain=
	try_dhcp=no
else
	dnsdomain=`/sbin/dhcpinfo DNSdmain`
	try_dhcp=yes
fi

if [ -n "$dnsdomain" ]; then
	if [ $try_dhcp = yes ]; then
		dnsservers=`/sbin/dhcpinfo DNSserv`
	else
		dnsservers=
	fi

	if [ -n "$dnsservers" ]; then
		if [ -f /etc/resolv.conf ]; then
			/usr/bin/rm -f /tmp/resolv.conf.$$
			/usr/bin/sed -e '/^domain/d' -e '/^nameserver/d' \
				/etc/resolv.conf >/tmp/resolv.conf.$$
		fi
		echo "domain $dnsdomain" >>/tmp/resolv.conf.$$
		for name in $dnsservers; do
			echo nameserver $name >>/tmp/resolv.conf.$$
		done
	else
		if [ -f /etc/resolv.conf ]; then
			/usr/bin/rm -f /tmp/resolv.conf.$$
			/usr/bin/sed -e '/^domain/d' /etc/resolv.conf \
			    >/tmp/resolv.conf.$$
		fi
		echo "domain $dnsdomain" >>/tmp/resolv.conf.$$
	fi

	# Warning: The umask is 000 during boot, which requires explicit
	# setting of file permission modes when we create files.

	/usr/bin/mv /tmp/resolv.conf.$$ /etc/resolv.conf
	/usr/bin/chmod 644 /etc/resolv.conf

	# Add dns to the nsswitch file, if it isn't already there.

	/usr/bin/rm -f /tmp/nsswitch.conf.$$
	/usr/bin/awk ' $1 ~ /^hosts:/ {
		n = split($0, a);
		newl = a[1];
		if ($0 !~ /dns/) {
			printf("#%s # Commented out by DHCP\n", $0);
			updated = 0;
			for (i = 2; i <= n; i++) {
				if (updated == 0 && index(a[i], "[") == 1) {
					newl = newl" dns";
					updated++;
				}
				newl = newl" "a[i];
			}
			if (updated == 0) {
				newl = newl" dns";
				updated++;
			}
			if (updated != 0)
				newl = newl" # Added by DHCP";
			else
				newl = $0;
			printf("%s\n", newl);
		} else
			printf("%s\n", $0);
	} $1 !~ /^hosts:/ { printf("%s\n", $0); }' /etc/nsswitch.conf \
	    >/tmp/nsswitch.conf.$$

	/usr/bin/mv /tmp/nsswitch.conf.$$ /etc/nsswitch.conf
	/usr/bin/chmod 644 /etc/nsswitch.conf

elif grep '# Added by DHCP$' /etc/nsswitch.conf >/dev/null 2>&1; then

	# If we added DNS to a hosts line in the nsswitch, remove it.

	/usr/bin/rm -f /tmp/nsswitch.conf.$$
	/usr/bin/sed -e \
	'/# Added by DHCP$/d' -e 's/^\(#hosts:\)\(.*[^#]\)\(#.*\)$/hosts: \2/' \
	    /etc/nsswitch.conf >/tmp/nsswitch.conf.$$

	/usr/bin/mv /tmp/nsswitch.conf.$$ /etc/nsswitch.conf
	/usr/bin/chmod 644 /etc/nsswitch.conf
fi

if [ $try_dhcp = yes ]; then
	# Read the hostname from the DHCP server
	hostname=`/sbin/dhcpinfo Hostname`

	if [ $? -eq 0 ]; then
		[ -z "$hostname" ] && hostname=$_INIT_UTS_NODENAME
		ipaddr=`/sbin/dhcpinfo Yiaddr`
		/usr/bin/rm -f /tmp/hosts.$$ /tmp/hosts_clear.$$

		# Delete any old lines added by dhcp.
		/usr/bin/sed -e '/# Added by DHCP$/d' /etc/inet/hosts \
		    > /tmp/hosts_clear.$$

		shift $#	# Clear $0-9 first in case grep fails
		set -- `/usr/bin/grep "^[ 	]*$ipaddr[ 	]" \
		    /tmp/hosts_clear.$$ 2>/dev/null`

		if [ $# -gt 0 ]; then
			# IP address is already in the hosts file. Ensure the
			# associated hostname is the same as the Hostname
			# property returned by the DHCP server.

			/usr/bin/sed -e \
			    "/^[ 	]*${ipaddr}[ 	]/s/${2}/${hostname}/" \
			    /tmp/hosts_clear.$$ >/tmp/hosts.$$
		else
			# IP address is missing from the hosts file.  Now check
			# to see if the hostname is present with a different IP.

			shift $#	# Clear $0-9 in case grep fails
			set -- `/usr/bin/grep -s -v '^#' /tmp/hosts_clear.$$ | \
			    /usr/bin/egrep "[	 ]${hostname}([	 ]|$)"`

			if [ $# -gt 0 ]; then
				# Hostname is present in the hosts file.
				# Rewrite this line to have the new IP address
				# and the DHCP comment.

				/usr/bin/sed -e "/^[ 	]*${1}[ 	]/d" \
				    /tmp/hosts_clear.$$ >/tmp/hosts.$$

				shift	# Shift off $1 (the old IP)

				echo "$ipaddr $*\c" | /usr/bin/tr ' ' '\t' \
				  >>/tmp/hosts.$$

				echo "\t# Added by DHCP" >>/tmp/hosts.$$
			else
				# Hostname is not present in the hosts file.
				# Add a new line for the host at the end of
				# the new hosts file.

				/usr/bin/mv /tmp/hosts_clear.$$ /tmp/hosts.$$
				echo "${ipaddr}\t${hostname}\t# Added by DHCP" \
				  >>/tmp/hosts.$$
			fi
		fi

		# Update loopback transport hosts files

		for inet in /etc/net/*/hosts; do
			echo "# RPC hosts" > $inet
			echo "$hostname	$hostname" >> $inet
			/usr/bin/chmod 644 $inet
		done

		/usr/bin/rm -f /tmp/hosts_clear.$$
		/usr/bin/mv /tmp/hosts.$$ /etc/inet/hosts
		/usr/bin/chmod 644 /etc/inet/hosts
	fi
fi

# Add a static route for multicast packets out our default interface.
# The default interface is the interface that corresponds to the node name.

(
if [ $try_dhcp = yes ]; then
	mcastif=`/sbin/dhcpinfo Yiaddr`
	[ -z "$mcastif" ] && mcastif=$_INIT_UTS_NODENAME
else
	mcastif=$_INIT_UTS_NODENAME
fi

echo "Setting default interface for multicast: add net 224.0.0.0: gateway" \
	"$mcastif"

/usr/sbin/route add -interface \
    -netmask 240.0.0.0 224.0.0.0 "$mcastif" >/dev/null
) &

# Run inetd in "standalone" mode (-s flag) so that it doesn't have
# to submit to the will of SAF.  Why did we ever let them change inetd?

/usr/sbin/inetd -s &