#!/bin/bash
#
# Univention Check Printers
#  script monitoring local printers and re-activates stopped printers
#
# Copyright 2006-2014 Univention GmbH
#
# http://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
#
# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <http://www.gnu.org/licenses/>.

eval "$(univention-config-registry shell cups/checkprinters/mail/subject cups/checkprinters/mail/address)"

disabled_printers="$(LC_ALL=C lpstat -p | awk '{if($3=="disabled") print $2}')"

# send report mail for disabled printers
if [ -n "$disabled_printers" ]; then
        (
                for printer in $disabled_printers; do
                    /usr/bin/lpq -P $printer
                    echo
                done
        ) | mail -s "$cups_checkprinters_mail_subject" "$cups_checkprinters_mail_address"
        # re-enable the printers
        for printer in $disabled_printers; do
                /usr/bin/univention-cups-enable $printer &>/dev/null
        done
fi

exit 0
