#!/bin/ksh93
#
# Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.


# The default AI manifest is a Derived Manifest (DM) script. The
# script creates a temp file from xml within the script, loads that
# file in as the manifest, then replaces the release of Solaris to
# install with the same release as that running on the AI client.

SCRIPT_SUCCESS=0
SOLPKG="entire"
TMPFILE=`/usr/bin/mktemp /tmp/default.xml.XXXXXX`

#
# create_xml_file
# 	Create xml tmp file from here document. The contents of the
#	here document are inserted during installadm create-service.
#
function create_xml_file
{
	# Create xml tmp file
	cat <<- EOF > $TMPFILE
%(default_manifest_goes_here)s
EOF
}

#
# error_handler
# 	Error handling function
#
function error_handler
{
	exit $?
}

#
# load_xml
# 	Load the default manifest from previously created tmp file
#
function load_xml
{
	# load the default manifest
	trap error_handler ERR
	/usr/bin/aimanifest load $TMPFILE
	trap - ERR
}

#
# update_solaris_version
# 	Update the manifest entry of the Solaris consolidation package
#	so that the release of Solaris being installed is the same as
#	that running on the client.
#
function update_solaris_version
{
	# If $SI_SYSPKG is not set in the environment, then the Solaris
	# consolidation pkg was not found on the client. Return without
	# making modifications to the manifest, but not an error.
	if [ -z ${SI_SYSPKG} ]; then
		echo "'${SOLPKG}' package not found on system"
		echo "Unable to constrain Solaris version being installed."
		return
	fi

	# Get list of pkgs to install from the manifest
	pkgs=$(/usr/bin/aimanifest get -r \
		/auto_install/ai_instance/software[@type="IPS"]/software_data[@action="install"]/name \
		2> /dev/null)
	# array will be formatted as:  <pkg>  <aimanifest path>...
	array=($(echo ${pkgs} | /usr/bin/nawk 'BEGIN{FS="\n"} {print $NF}'))

	# Find the Solaris consolidation package manifest entry and change
	# it to use the version specified by the environment variable,
	# $SI_SYSPKG
	idx=0
	while [ $idx -lt ${#array[@]} ]; do
		pkgname=${array[$idx]}
		# check if pkgname is Solaris consolidation package
		echo $pkgname | /usr/bin/egrep -s \
			"(^*/|^)${SOLPKG}($|@[a-zA-Z0-9.,:-]*$)"
		if [ $? -ne 0 ]; then
			# look at next pkg
			(( idx=idx+2 ))
			continue
		fi
		# Replace Solaris consolidation package entry with DM
		# $SI_SYSPKG variable, which resolves to a pkg entry
		# that is the same release of Solaris as that running
		# on the client
		if [ ${pkgname} == ${SI_SYSPKG} ]; then
			echo "Solaris consolidation manifest entry is" \
				"$SI_SYSPKG"
			break
		fi
		echo "Replacing Solaris consolidation manifest entry" \
			"'${pkgname}' with '${SI_SYSPKG}'"
		trap error_handler ERR
		/usr/bin/aimanifest set ${array[idx+1]} $SI_SYSPKG
		trap - ERR
		break
	done

	if [ $idx -ge ${#array[@]} ]; then
		echo "Warning: Manifest does not contain package, '$SOLPKG'"
		echo "Unable to constrain version of Solaris"
	fi
}

########################################
# main
########################################
# Create xml tmp file, then use aimanifest(1M) to load the
# file and update the Solaris version to install.
if [ -z "$TMPFILE" ]; then
        echo "Error: Unable to create temporary manifest file"
        exit 1
fi
create_xml_file
load_xml
update_solaris_version

exit $SCRIPT_SUCCESS