#!/bin/sh
# postinst script for x2gobroker-daemon
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

. /usr/share/debconf/confmodule

case "$1" in
	configure)
		# setup user/group x2gobroker
		if ! getent group x2gobroker 1>/dev/null; then
			echo "Creating x2gobroker group." 1>&2
			addgroup --system x2gobroker
		else
			echo "Group x2gobroker already exists." 1>&2
		fi
		if ! getent passwd x2gobroker 1>/dev/null; then
			echo "Creating x2gobroker user." 1>&2
			adduser --system \
			    --disabled-password --disabled-login \
			    --shell /bin/bash --group --home /var/lib/x2gobroker x2gobroker
		else
			echo "User x2gobroker already exists." 1>&2

			# make sure the home directory exists belongs to x2gobroker:x2gobroker
			mkdir -p /var/lib/x2gobroker
			chown x2gobroker:x2gobroker /var/lib/x2gobroker -f

			# make sure all settings are appropriate
			if getent passwd x2gobroker | grep /dev/null 1>/dev/null 2>/dev/null; then
				usermod --home /var/lib/x2gobroker x2gobroker
			fi
			if getent passwd x2gobroker | grep /bin/false 1>/dev/null 2>/dev/null; then
				usermod --shell /bin/bash x2gobroker
			fi
		fi

		db_get x2gobroker-ssh/create-group && create_group=$RET
		db_get x2gobroker-ssh/use-existing-group && use_existing_group=$RET
		db_get x2gobroker-ssh/last-group-x2gobroker-users && last_group=$(echo $RET | cut -d" " -f1)
		db_get x2gobroker-ssh/group-x2gobroker-users && group=$(echo $RET | cut -d" " -f1)
		db_get x2gobroker-ssh/del-last-group-x2gobroker-users && del_last_group="$RET"
		db_get x2gobroker-ssh/manual-setup-required && manual_setup="$RET"

		if [ "$manual_setup" = "false" ]; then

			if [ "$create_group" = "true" ] && [ "x$group" != "x" ]; then
				if echo "$group" | egrep '^[[:digit:]]{1,5}$' 1>/dev/null; then
					echo "Specified group is a gidNumber, not creating any group." 1>&2
				elif ! getent group $group >/dev/null; then
					echo "Creating $group group." 1>&2
					addgroup $group

					# invalidate group cache before proceeding...
					if which nscd 1>/dev/null; then
						if ps -C nscd 1>/dev/null; then
							nscd -i group
						fi
					fi

				else
					echo "Group $group already exists." 1>&2
				fi
			fi

			# the x2gobroker-ssh wrapper needs special permissions for its executable
			if [ "$group" != "$last_group" ] || [ "$create_group" = "true" ]; then

				if dpkg-statoverride --list /usr/bin/x2gobroker-ssh 1>/dev/null; then
					dpkg-statoverride --remove /usr/bin/x2gobroker-ssh
				fi
				chown root:root /usr/bin/x2gobroker-ssh
				chmod 0755 /usr/bin/x2gobroker-ssh
				if getent group $group 1>/dev/null; then
					dpkg-statoverride --add --update x2gobroker $group 4550 /usr/bin/x2gobroker-ssh
				else
					echo "Group $group does not exist. Resetting file permissions of /usr/bin/x2gobroker-ssh to 0755:root:root." 1>&2
				fi

				if [ "$del_last_group" = "true" ]; then
					# try to remove the formerly used group for this role, on failure, ignore it
					if getent group $last_group 1>/dev/null && [ $(getent group $last_group | cut -d ":" -f 3) -ge 500 ] && [ $(getent group $last_group | cut -d ":" -f 1) != "nogroup" ]; then
						delgroup "$last_group" && echo "Removing Posix group $last_group as requested."
						db_reset x2gobroker-ssh/del-last-group-x2gobroker-users
					fi
				fi

			fi

		else
			if dpkg-statoverride --list /usr/bin/x2gobroker-ssh 1>/dev/null; then
				dpkg-statoverride --remove /usr/bin/x2gobroker-ssh
			fi
			chown root:root /usr/bin/x2gobroker-ssh
			chmod 0755 /usr/bin/x2gobroker-ssh
		fi

		mkdir -p /var/log/x2gobroker && chown x2gobroker:adm /var/log/x2gobroker && chmod 2750 /var/log/x2gobroker
		touch /var/log/x2gobroker/broker.log && chown x2gobroker:adm /var/log/x2gobroker/broker.log
		touch /var/log/x2gobroker/error.log && chown x2gobroker:adm /var/log/x2gobroker/error.log

		;;

	abort-upgrade|abort-remove|abort-deconfigure)
		;;

	*)
		echo "postinst called with unknown argument \`$1'" 1>&2
		exit 1
		;;
esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.



exit 0