# checkinstall script to control a patch installation.
# directory format options.
#
#       @(#)checkinstall 1.6 96/09/27 SMI
#
# Copyright (c) 1995 by Sun Microsystems, Inc.
# All rights reserved
#

PATH=/usr/sadm/bin:$PATH

INFO_DIR=`dirname $0`
INFO_DIR=`dirname $INFO_DIR`	# one level up

NOVERS_MSG="PaTcH_MsG 8 Version $VERSION of $PKG is not installed on this system."
ALRDY_MSG="PaTcH_MsG 2 Patch number $SUNW_PATCHID is already applied."
TEMP_MSG="PaTcH_MsG 23 Patch number $SUNW_PATCHID cannot be applied until all \
restricted patches are backed out."

# Read the provided environment from what may have been a request script
. $1

# Old systems can't deal with checkinstall scripts anyway
if [ "$PATCH_PROGRESSIVE" = "true" ]; then
	exit 0
fi

#
# Confirm that the intended version is installed on the system.
#
if [ "${UPDATE}" != "yes" ]; then
	echo "$NOVERS_MSG"
	exit 3
fi

#
# Confirm that this patch hasn't already been applied and
# that no other mix-ups have occurred involving patch versions and
# the like.
#
Skip=0
active_base=`echo $SUNW_PATCHID | nawk '
	{ print substr($0, 1, match($0, "-")-1) } '`
active_inst=`echo $SUNW_PATCHID | nawk '
	{ print substr($0, match($0, "-")+1) } '`

# Is this a restricted patch?
if echo $active_base | egrep -s "R"; then
	is_restricted="true"
	# All restricted patches are backoutable
	echo "PATCH_NO_UNDO=" >> $1
else
	is_restricted="false"
fi

for patchappl in ${PATCHLIST}; do
	# Is this an ordinary patch applying over a restricted patch?
	if [ $is_restricted = "false" ]; then
		if echo $patchappl | egrep -s "R"; then
			echo "$TEMP_MSG"
			exit 3;
		fi
	fi

	# Is there a newer version of this patch?
	appl_base=`echo $patchappl | nawk '
		{ print substr($0, 1, match($0, "-")-1) } '`
	if [ $appl_base = $active_base ]; then
		appl_inst=`echo $patchappl | nawk '
			{ print substr($0, match($0, "-")+1) } '`
		result=`expr $appl_inst \> $active_inst`
		if [ $result -eq 1 ]; then
			echo "PaTcH_MsG 1 Patch number $SUNW_PATCHID is superceded by the already applied $patchappl."
			exit 3
		elif [ $appl_inst = $active_inst ]; then
			# Not newer, it's the same
			if [ "$PATCH_UNCONDITIONAL" = "true" ]; then
				if [ -d $PKGSAV/$SUNW_PATCHID ]; then
					echo "PATCH_NO_UNDO=true" >> $1
				fi
			else
				echo "$ALRDY_MSG"
				exit 3;
			fi
		fi
	fi
done

# Construct a list of applied patches in order
echo "PATCHLIST=${PATCHLIST} $SUNW_PATCHID" >> $1

#
# Construct the complete list of patches this one obsoletes
#
ACTIVE_OBSOLETES=$SUNW_OBSOLETES

if [ -n "$SUNW_OBSOLETES" ]; then
	# Merge the two lists
	echo $SUNW_OBSOLETES | sed 'y/\ /\n/' | \
	nawk -v PatchObsList="$PATCH_OBSOLETES" '
	BEGIN {
		printf("PATCH_OBSOLETES=");
		PatchCount=split(PatchObsList, PatchObsComp, " ");

		for(PatchIndex in PatchObsComp) {
			Atisat=match(PatchObsComp[PatchIndex], "@");
			PatchObs[PatchIndex]=substr(PatchObsComp[PatchIndex], 0, Atisat-1);
			PatchObsCnt[PatchIndex]=substr(PatchObsComp[PatchIndex], Atisat+1);
		}
	}
	{
		Inserted=0;
		for(PatchIndex in PatchObs) {
			if (PatchObs[PatchIndex] == $0) {
				if (Inserted == 0) {
					PatchObsCnt[PatchIndex]=PatchObsCnt[PatchIndex]+1;
					Inserted=1;
				} else {
					PatchObsCnt[PatchIndex]=0;
				}
			}
		}
		if (Inserted == 0) {
			printf ("%s@1 ", $0);
		}
		next;
	}
	END {
		for(PatchIndex in PatchObs) {
			if ( PatchObsCnt[PatchIndex] != 0) {
				printf("%s@%d ", PatchObs[PatchIndex], PatchObsCnt[PatchIndex]);
			}
		}
		printf("\n");
	} ' >> $1
	# Clear the parameter since it has already been used.
	echo "SUNW_OBSOLETES=" >> $1

	# Pass it's value on to the preinstall under another name
	echo "ACTIVE_OBSOLETES=$ACTIVE_OBSOLETES" >> $1
fi

#
# Construct PATCH_INFO line for this package.
#

tmpRequire=`nawk -F= ' $1 ~ /REQUIR/ { print $2 } ' $INFO_DIR/pkginfo `
tmpIncompat=`nawk -F= ' $1 ~ /INCOMPAT/ { print $2 } ' $INFO_DIR/pkginfo `

if [ -n "$tmpRequire" ] && [ -n "$tmpIncompat" ]
then
	echo "PATCH_INFO_$SUNW_PATCHID=Installed: `date` From: `uname -n` \
	  Obsoletes: $ACTIVE_OBSOLETES Requires: $tmpRequire \
	  Incompatibles: $tmpIncompat" >> $1
elif [ -n "$tmpRequire" ]
then
	echo "PATCH_INFO_$SUNW_PATCHID=Installed: `date` From: `uname -n` \
	  Obsoletes: $ACTIVE_OBSOLETES Requires: $tmpRequire Incompatibles: " >> $1
elif [ -n "$tmpIncompat" ]
then
	echo "PATCH_INFO_$SUNW_PATCHID=Installed: `date` From: `uname -n` \
	  Obsoletes: $ACTIVE_OBSOLETES Requires: Incompatibles: $tmpIncompat" >> $1
else
	echo "PATCH_INFO_$SUNW_PATCHID=Installed: `date` From: `uname -n` \
	  Obsoletes: $ACTIVE_OBSOLETES Requires: Incompatibles: " >> $1
fi

#
# Since this script is called from the delivery medium and we may be using
# dot extensions to distinguish the different patch packages, this is the
# only place we can, with certainty, trace that source for our backout
# scripts. (Usually $INST_DATADIR would get us there).
#
echo "SCRIPTS_DIR=`dirname $0`" >> $1

# If additional operations are required for this package, place
# those package-specific commands here.

#XXXSpecial_CommandsXXX#

exit 0