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# Authors:
# Martin Kosek <mkosek@redhat.com>
#
# Copyright (C) 2012 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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, see <http://www.gnu.org/licenses/>.
from ipaserver.install.plugins import MIDDLE
from ipaserver.install.plugins.baseupdate import PostUpdate
from ipalib import api, errors
from ipapython.dn import DN
from ipapython.ipa_log_manager import *
DEFAULT_ID_RANGE_SIZE = 200000
class update_default_range(PostUpdate):
"""
Create default ID range for upgraded servers.
"""
order=MIDDLE
def execute(self, **options):
ldap = self.obj.backend
dn = DN(api.env.container_ranges, api.env.basedn)
search_filter = "objectclass=ipaDomainIDRange"
try:
(entries, truncated) = ldap.find_entries(search_filter, [], dn)
except errors.NotFound:
pass
else:
root_logger.debug("default_range: ipaDomainIDRange entry found, skip plugin")
return (False, False, [])
dn = DN(('cn', 'admins'), api.env.container_group, api.env.basedn)
try:
admins_entry = ldap.get_entry(dn, ['gidnumber'])
except errors.NotFound:
root_logger.error("default_range: No local ID range and no admins "
"group found. Cannot create default ID range")
return (False, False, [])
id_range_base_id = admins_entry['gidnumber'][0]
id_range_name = '%s_id_range' % api.env.realm
id_range_size = DEFAULT_ID_RANGE_SIZE
range_entry = ['objectclass:top',
'objectclass:ipaIDrange',
'objectclass:ipaDomainIDRange',
'cn:%s' % id_range_name,
'ipabaseid:%s' % id_range_base_id,
'ipaidrangesize:%s' % id_range_size,
'iparangetype:ipa-local',
]
updates = {}
dn = DN(('cn', '%s_id_range' % api.env.realm),
api.env.container_ranges, api.env.basedn)
updates[dn] = {'dn': dn, 'default': range_entry}
# Default range entry has a hard-coded range size to 200000 which is
# a default range size in ipa-server-install. This could cause issues
# if user did not use a default range, but rather defined an own,
# bigger range (option --idmax).
# We should make our best to check if this is the case and provide
# user with an information how to fix it.
dn = DN(api.env.container_dna_posix_ids, api.env.basedn)
search_filter = "objectclass=dnaSharedConfig"
attrs = ['dnaHostname', 'dnaRemainingValues']
try:
(entries, truncated) = ldap.find_entries(search_filter, attrs, dn)
except errors.NotFound:
root_logger.warning("default_range: no dnaSharedConfig object found. "
"Cannot check default range size.")
else:
masters = set()
remaining_values_sum = 0
for entry in entries:
hostname = entry.get('dnahostname', [None])[0]
if hostname is None or hostname in masters:
continue
remaining_values = entry.get('dnaremainingvalues', [''])[0]
try:
remaining_values = int(remaining_values)
except ValueError:
root_logger.warning("default_range: could not parse "
"remaining values from '%s'", remaining_values)
continue
else:
remaining_values_sum += remaining_values
masters.add(hostname)
if remaining_values_sum > DEFAULT_ID_RANGE_SIZE:
msg = ['could not verify default ID range size',
'Please use the following command to set correct ID range size',
' $ ipa range-mod %s --range-size=RANGE_SIZE' % id_range_name,
'RANGE_SIZE may be computed from --idstart and --idmax options '
'used during IPA server installation:',
' RANGE_SIZE = (--idmax) - (--idstart) + 1'
]
root_logger.error("default_range: %s", "\n".join(msg))
return (False, True, [updates])
api.register(update_default_range)
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