ypsetup.sh

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#! /bin/sh
# @(#)ypsetup.sh	4.3   (ULTRIX)        9/7/90
#									
# 			Copyright (c) 1986 by				
# 		Digital Equipment Corporation, Maynard, MA		
# 			All rights reserved.				
# 									
#    This software is furnished under a license and may be used and	
#    copied  only  in accordance with the terms of such license and	
#    with the  inclusion  of  the  above  copyright  notice.   This	
#    software  or  any  other copies thereof may not be provided or	
#    otherwise made available to any other person.  No title to and	
#    ownership of the software is hereby transferred.			
# 									
#    The information in this software is subject to change  without	
#    notice  and should not be construed as a commitment by Digital	
#    Equipment Corporation.						
# 									
#    Digital assumes no responsibility for the use  or  reliability	
#    of its software on equipment which is not supplied by Digital.	
#
# Purpose:	Set up Yellow Pages
# Usage:	ypsetup [ {domainname} client [ {file} ] ]
# Environment:	Bourne shell script
# Date:		6/30/86
# Author:	Fred L. Templin
# 
# Remarks:
#    Sets up files:
#	/etc/rc.local
#	/usr/lib/crontab
#	/etc/yp/{domainname}/*
#	/etc/svcorder
#
#
# Modification History
#
#	9/06/90  -- terry
#		Added message to remind user that master files should be
#		in the directory /var/yp/src.
#		Modified yppasswdd information to use /var/yp/src instead
#		of /etc.
#
#	7/17/90  -- terry
#		Added -X option (initial bind) to ypbind.
#
#       12/1/89  -- terry
#		Added code to remove /etc/yp/src/passwd.tmp on boot if it
#		exists.  
#
#	10/17/89 -- terry
#		Added -S option to ypbind.
#
#	07/24/89 -- sue
#		Added message to tell user to edit the $SVC file.
#
#	11/10/88 -- logcher
#		Updated with V3.0 changes.
#
#	08/29/88 -- logcher
#		Added "local" to svcorder file for consistency
#
#	06/13/88 -- logcher
#		Changed silent client adding to take the root directory
#		pathname and modify /etc files rc.local and svcorder
#		relatively, on the client.
#
#	04/18/88 -- logcher
#		Modified yp check in /etc/svcorder file for ^yp and ^YP
#
#	02/24/88 -- fglover
#		Modify editorial text for /etc/svcorder file
#
#	01/26/88 -- fglover
#		Add support for /etc/svcorder file
#

#
# Set up interrupt handlers:
#
QUIT='
	if [ -r $YPTMP ]
	then
		rm $YPTMP
	fi
	if [ -r $RCTMP ]
	then
		rm $RCTMP
	fi
	if [ -r $CRTMP ]
	then
		rm $CRTMP
	fi
	echo "Ypsetup terminated with no installations made."
	exit 1
'
QMSG='
	echo "Please clean up ${YPDIR}/${ypdomain} !!"
	eval "$QUIT"
'

#
# Trap ^c signal, etc.
#
trap 'eval "$QUIT"' 1 2 3 15

# files
YPTMP=/tmp/ypsetup.yp.$$
RCTMP=/tmp/ypsetup.rc.$$
CRTMP=/tmp/ypsetup.cr.$$
HOSTS=/etc/hosts
YPDIR=/etc/yp
YPLOG=ypxfr.log
RCFILE=/etc/rc.local
CRFILE=/usr/lib/crontab
NULL=/dev/null
SVCORDER=/etc/svcorder
SVCSETUP=/usr/etc/svcsetup
SVC=/etc/svc.conf
CLIENTROOT=""

# commands
MAKE="make -f /etc/yp/Makefile"
MAKEDBM=/etc/yp/makedbm
YPXFR=/etc/yp/ypxfr
YPSETUP=/etc/ypsetup

# defines
LOCAL_KEY="echo -n 'local daemons:'"
YPSTART_KEY="# %YPSTART% - Yellow Pages daemons added by \"ypsetup\""
YPEND_KEY="# %YPEND%"
NFSSTART_KEY="# %NFSSTART% - NFS daemons added by \"nfssetup\""
PATH=$PATH:$YPDIR
export PATH
DEFMAPS="group.bygid group.byname hosts.byaddr hosts.byname \
mail.aliases netgroup netgroup.byuser netgroup.byhost networks.byaddr \
networks.byname passwd.byname passwd.byuid protocols.byname protocols.bynumber \
services.byname ypservers"
S_OPT=""

ypdomain=""
startup=""
flavor=""
verbose=y
first_time=y
scratch_maps=y

#
# PHASE ONE: Gather data!!
#
if [ $1 ]
then
	#
	# Run fast and silent for DMS client setup.
	#
	ypdomain=$1
	if [ $2 ] && [ $2 = "client" ]
	then
		verbose=""
		flavor=c
		if [ $3 ] 
		then
			CLIENTROOT=$3
		fi
		#
		# Require it to be run by root
		#
		if [ \! -w $CLIENTROOT$RCFILE ]
		then
			exit 1
		fi

		#
		# Run it multi-user
		#
		hname=`hostname`
		if [ $? -ne 0 ] || [ \! -d $YPDIR ]
		then
			exit 1
		fi

		#
		# See if this is a re-install
		#
		egrep -s "$YPSTART_KEY" $CLIENTROOT$RCFILE
		if [ $? -eq 0 ]
		then
			egrep -s "$YPEND_KEY" $CLIENTROOT$RCFILE
			if [ $? -ne 0 ]
			then
				exit 1
			fi
			first_time=""
		fi
	else
		echo "usage: ypsetup [ {domainname} client [ {file} ]  ]"
		eval "$QUIT"
	fi
fi

if [ $verbose ]
then
	#
	# Require it to be run by root
	#
	if [ \! -w $CLIENTROOT$RCFILE ]
	then
		echo "Please su to root first."
		eval "$QUIT"
	fi

	#
	# Be sure network has already been set up, and this baby has a name!!
	#

	hname=`hostname`
	if [ $? -ne 0 ] || [ \! -d $YPDIR ]
	then
		echo "
Please bring the system to multi-user mode before running ypsetup."
		eval "$QUIT"
	fi

	#
	#
	# See if this is a re-install
	#
	egrep -s "$YPSTART_KEY" $CLIENTROOT$RCFILE
	if [ $? -eq 0 ]
	then
		egrep -s "$YPEND_KEY" $CLIENTROOT$RCFILE
		if [ $? -ne 0 ]
		then
			echo "
The Yellow Pages environment for this host has already been installed
but can not be reconfigured automatically. To change the current YP
configuration, edit the file $RCFILE to remove the old YP environment
and run ypsetup again."
			eval "$QUIT"
		fi
		echo "
The Yellow Pages environment for this host has already been installed.
Would you like to change the current YP configuration?"
		again=y
		while [ $again ]
		do
			again=""
			echo -n "
Enter \"y\" or \"n\" [no default]: "
			read ans
			case $ans in
			[yY]*)
				first_time=""
				;;
			[nN]*)
				eval "$QUIT"
				;;
			*)
				again=y
				;;
			esac
		done
	fi

	if [ $first_time ]
	then
		echo -n "
The ypsetup command configures the Yellow Pages (YP) environment
for your system.  Yellow Pages provides a distributed data lookup
service for sharing information between systems on the network.
Information is kept in database files known as YP maps. These maps
are organized in YP domains which are collections of maps located
on certain systems on the network known as servers. For each domain,
there are three flavors of systems on the network:

	- a master YP server is a system which is responsible for
	  maintaining the master copy of the domain's database.
	  There should be ONLY ONE master server for a domain.

	- a slave YP server is a system which periodically receives
	  updated versions of the master server's maps. The slave
	  server can look up and return information in its private
	  collection of maps, and can take over for the master
	  server in the event of a failure.

	- a YP client is a system which has no local copies of the
	  domain's database, but can look up database information
	  by requesting service from a master or slave server.

[ Press the RETURN key to continue ] : "
		read junk
	fi
	echo "
ypsetup will take you through a configuration process to set the
default YP domain name of your system, determine the flavor of
your Yellow Pages environment and construct the default YP map
files for this YP domain.  Default answers are shown in square
brackets ([]).  To use a default answer, press the RETURN key."

	#
	# did he specify a new domainname?
	#
	if [ -n "$ypdomain" ]
	then
		echo "
Using \"$ypdomain\" as the default YP domain name for this system."
	else
		#
		# Ask him for a name...
		#
		again=y
		echo "
In order to use the Yellow Pages service, your host must have a
default YP domain name."
		while [ $again ]
		do
			echo -n "
Please enter a name to be used as the default YP domain name : "
			read ypdomain
			case $ypdomain in
			"")
				;;
			*)
				again=""
				;;
			esac
		done
	fi

	#
	# Set domain name
	#
	domainname $ypdomain

	prompt=y
	echo "
Will you be configuring your system as a master YP server,
slave YP server, or YP client for the domain \"${ypdomain}\" ?"
	while [ $prompt ]
	do
		prompt=""
		echo -n "
Enter \"m\" for MASTER, \"s\" for SLAVE, or \"c\" for CLIENT [c]: "
		read flavor
		case $flavor in
		[mM]*)
			echo "
Before configuring your system as a master YP server, you
must first be sure that NO OTHER SYSTEM ON THE NETWORK IS
CONFIGURED AS A MASTER SERVER FOR THIS DOMAIN!! If a master
YP server is already configured, or you are unsure, please
exit ypsetup now."
			chk=y
			while [ $chk ]
			do
				chk=""
				echo -n "
Enter \"e\" to EXIT or \"c\" to CONTINUE [no default]: "
				read query
				case $query in
				[eE]*)
					eval "$QUIT"
					;;
				[cC]*)
					;;
				*)
					chk=y
					;;
				esac
			done
			echo "
As the master YP server for the domain ${ypdomain}, you may choose
to run the yppasswdd(8yp) server daemon to allow remote password
updates to the master copy of the passwd file (/var/yp/src/passwd). "
			run_yppasswdd=n
			chk=y
			while [ $chk ]
			do
				chk=""
				echo -n "
Would you like to run the yppasswdd daemon [n]? "
				read query
				case $query in
				[yY]*)
					run_yppasswdd=y
					;;
				[nN]*|"")
					;;
				*)
					chk=y
					;;
				esac
			done
			if [ -d $YPDIR/$ypdomain ]
			then
				echo "
The YP maps have already been initialized for the domain
\"${ypdomain}\". If you are changing your current YP config-
uration from a slave server or a client to a master server,
the YP maps MUST be remade!  Please be sure that the YP files
that you will be distributing are in the directory /var/yp/src.

Would you like ypsetup to remake the maps in the ${YPDIR}/${ypdomain} directory? "
				again=y
				while [ $again ]
				do
					again=""
					echo -n "
Enter \"y\", \"n\", or \"e\" to EXIT ypsetup [no default]: "
					read ans
					case $ans in
					[yY]*)
						scratch_maps=y
						;;
					[eE]*)
						eval "$QUIT"
						;;
					[nN]*)
						scratch_maps=""
						;;
					*)
						again=y
						;;
					esac
				done
			fi
			if [ $scratch_maps ]
			then
			echo "
You will now be asked to list the names of other hosts which will
be configured as servers for maps in this YP domain.  (This host
is included in the list by default). This list will be used to name
the recipients of any updates to your hosts YP maps. Enter only the
names of known hosts which have been initialized in the /etc/hosts
file and press the RETURN key to terminate the list:
"
			not_done=y
			while [ $not_done ]
			do
				query=y
				#
				# Enter this host first...
				#
				echo $hname > $YPTMP
				while [ $query ]
				do
					echo -n "	Name of host: "
					read servname
					if [ $servname ]
					then
						good=`cat $HOSTS | awk "
							BEGIN { found = 0 }
							/[ \t]${servname}[ \t]/ { found = 1; print \"y\" }
							END { if ( found == 0 ) print \"n\" }"`
				#
				# had to put this in to recognize hostnames followed by EOL
				#
						good1=`cat $HOSTS | awk "
							BEGIN { found = 0 }
							/[ \t]${servname}$/ { found = 1; print \"y\" }
							END { if ( found == 0 ) print \"n\" }"`
						if [ $good = y ] || [ $good1 = y ]
						then
							if [ $servname = $hname ]
							then
								echo "	Can't name this host!"
								echo ""
							else 
								echo $servname >> $YPTMP
							fi
						else
							echo "	\"$servname\" NOT a known host!"
							echo ""
						fi
					else
						query=""
					fi
				done
		
				#
				# Ask for verification...
				#
				echo "The list of Yellow Pages servers is:"
				awk '
				{
					printf "\t%s\n", $0 
				}' $YPTMP
					echo "
You may now redo this list, exit the setup procedure, or continue.
If you choose to continue, the default set of YP maps for your host
will now be initialized.  Please be sure that the YP files that you will 
be distributing are in the /var/yp/src directory.

THIS PROCEDURE TAKES TIME!!"
				query=y
				while [ $query ]
				do
					echo -n "
Enter \"r\" to REDO the servers list, \"e\" to EXIT ypsetup
procedure,  or \"c\" to CONTINUE [no default]: "
					read resp
					case $resp in
					[cC]*)
						not_done=""
						query=""
						;;
					[rR]*)
						query=""
						;;
					[eE]*)
						eval "$QUIT"
						;;
					*)
						;;
					esac
				done
			done
			
			trap 'eval "$QMSG"' 1 2 3 15