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#!/usr/bin/python
# Authors:
#     Ade Lee <alee@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright (C) 2013 Red Hat, Inc.
# All rights reserved.
#

import grp
import os
import pwd
import re
import pki.server.upgrade


class FixLogFileOwnership(pki.server.upgrade.PKIServerUpgradeScriptlet):

    def __init__(self):
        self.message = 'Fix log file ownership'

    def upgrade_instance(self, instance):
        registry_file = os.path.join(
            pki.server.REGISTRY_DIR, 'tomcat', instance.name, instance.name)

        with open(registry_file, "r") as registry:
            lines = registry.readlines()

        for line in lines:
            m = re.search('^PKI_USER=(.*)$', line)
            if m:
                user = m.group(1)
            m = re.search('^PKI_GROUP=(.*)$', line)
            if m:
                group = m.group(1)

        uid = pwd.getpwnam(user).pw_uid
        gid = grp.getgrnam(group).gr_gid

        log_dir = os.path.join('/var/log/pki', instance.name)

        self._chown(log_dir, uid, gid)


    def _chown(self, path, uid, gid):
        os.chown(path, uid, gid)
        for item in os.listdir(path):
            itempath = os.path.join(path, item)
            if os.path.isfile(itempath):
                os.chown(itempath, uid, gid)
            elif os.path.isdir(itempath):
                self._chown(itempath, uid, gid)