#! /bin/sh
#
#	config_host	@(#)config_host 1.1 94/10/31 SMI
#
# Some files we access.
#
#
SYS_INFO_FILE="/etc/install/sys_info"
HOSTS_FILE="/etc/hosts"
TMP_HOSTS_FILE="/tmp/thosts"
YP_DIR="/var/yp"
ZONEINFO_DIR="/usr/lib/zoneinfo"
DOMAINNAME_FILE="/etc/defaultdomain"
HOSTNAME_FILE="/etc/hostname"

#
#	The default values must be non-null.
#
DEFAULT_DOMAINNAME="noname"
DEFAULT_HOSTNAME="noname"
DEFAULT_IP_ADDR="192.9.200.1"
DEFAULT_YPTYPE="none"
DEFAULT_TIMEZONE="Factory"

#
#	field() Macro to extract field values from sys_info file
#
field()
{
	(awk -F= "\$1 ~ /${F}\$/ {print \$2}" ${SYS_INFO_FILE})
}


umask 22

#
#	Test for user = root
#
if [ `/usr/ucb/whoami` != "root" ]; then
	echo	You must be root to run $0
	exit 1
fi

#
#	Get the necessary variables from the sys_info file
#
F="hostname"
hostname=`field`

F="timezone"
timezone=`field`

F="domainname"
domainname=`field`

F="ip"
ip_addr=`field`

F="ether_name"
ether0=`field`

F="yp_type"
yptype=`field`

#
#	Set hostname, domainname, timezone, ip address and networked variables
#
yptype=${yptype:=$DEFAULT_YPTYPE}

hostname=${hostname:=$DEFAULT_HOSTNAME}

domainname=${domainname:=$DEFAULT_DOMAINNAME}
if [ ${yptype} = "none" ]; then
	domainname=${DEFAULT_DOMAINNAME}
fi

timezone=${timezone:=$DEFAULT_TIMEZONE}

ip_addr=${ip_addr:=$DEFAULT_IP_ADDR}

networked=$ether0

#
#	now, print the working variables if debug flag (debug) given
#
if [ $1 ]; then
	if [ $1 = "debug" ]; then
		echo ""
		echo "    SYS_INFO_FILE     :  ${SYS_INFO_FILE}"
		echo "    HOSTS_FILE        :  ${HOSTS_FILE}"
		echo "    TMP_HOSTS_FILE    :  ${TMP_HOSTS_FILE}"
		echo "    YP_DIR            :  ${YP_DIR}"
		echo "    ZONEINFO_DIR      :  ${ZONEINFO_DIR}"
		echo "    DOMAINNAME_FILE   :  ${DOMAINNAME_FILE}"
		echo "    HOSTNAME_FILE     :  ${HOSTNAME_FILE}"
		echo ""
		echo "    DEFAULT_DOMAINNAME:  ${DEFAULT_DOMAINNAME}"
		echo "    DEFAULT_HOSTNAME  :  ${DEFAULT_HOSTNAME}"
		echo "    DEFAULT_IP_ADDR   :  ${DEFAULT_IP_ADDR}"
		echo "    DEFAULT_TIMEZONE  :  ${DEFAULT_TIMEZONE}"
		echo "    DEFAULT_YPTYPE    :  ${DEFAULT_YPTYPE}"
		echo ""
		echo "    hostname     :  ${hostname}"
		echo "    ip_addr      :  ${ip_addr}"
		echo "    ether0       :  ${ether0}"
		echo "    timezone     :  ${timezone}"
		echo "    yp_type      :  ${yptype}"
		echo "    domainname   :  ${domainname}"
		echo "    networked    :  ${networked}"
	fi
fi

#
#	Set the hostname
#
rm -f ${HOSTNAME_FILE}.??0
if [ ${networked} ]; then
	echo ${hostname} > ${HOSTNAME_FILE}.${ether0}
else
	echo ${hostname} > ${HOSTNAME_FILE}.xx0
fi

#
#       Set the domainname.
#
echo ${domainname} > ${DOMAINNAME_FILE}

#
#	Set/unset the NIS
#
#	If we unset the NIS, /var/yp is moved to /var/yp- and saved.
#	We test for existence of /var/yp when unsetting the NIS
#	because we don't want to blindly remove /var/yp-.  If we did, then
#	running this script twice would remove /var/yp- and there would be
#	nothing left to move back to /var/yp.
#
if [ ${yptype} = "none" ]; then
	if [ -d ${YP_DIR} ]; then
		rm -rf ${YP_DIR}-
		mv -f ${YP_DIR} ${YP_DIR}- 2>/dev/null
	fi
else
	mv -f ${YP_DIR}- ${YP_DIR} 2>/dev/null
	mkdir -p ${YP_DIR}/binding
	#rm -f ${YP_DIR}/binding/*
	chown bin ${YP_DIR} ${YP_DIR}/binding
	chgrp staff ${YP_DIR} ${YP_DIR}/binding
	chmod 2755 ${YP_DIR} ${YP_DIR}/binding
fi

#
#	Set timezone
#
cwd=`pwd`
cd ${ZONEINFO_DIR}
rm -f ${ZONEINFO_DIR}/localtime- 2>/dev/null
mv -f ${ZONEINFO_DIR}/localtime ${ZONEINFO_DIR}/localtime- 2>/dev/null
ln ${timezone} localtime 2>/dev/null
cd ${cwd}

#
#	DONE
#
#echo    "Completed configuration of ${hostname}"

exit 0