Imported Upstream version 4.6.2
This commit is contained in:
Mario Fetka
226
ipaserver/install/plugins/update_uniqueness.py
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226
ipaserver/install/plugins/update_uniqueness.py
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# Authors:
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# Alexander Bokovoy <abokovoy@redhat.com>
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#
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# Copyright (C) 2014 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging
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from ipalib import Registry, errors
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from ipalib import Updater
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from ipapython.dn import DN
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logger = logging.getLogger(__name__)
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register = Registry()
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@register()
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class update_uniqueness_plugins_to_new_syntax(Updater):
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"""
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Migrate uniqueness plugins to new style syntax
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* OLD: *
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nsslapd-pluginarg0: uid
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nsslapd-pluginarg1: dc=people,dc=example,dc=com
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nsslapd-pluginarg2: dc=sales, dc=example,dc=com
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or
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nsslapd-pluginarg0: attribute=uid
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nsslapd-pluginarg1: markerobjectclass=organizationalUnit
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nsslapd-pluginarg2: requiredobjectclass=person
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* NEW: *
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uniqueness-attribute-name: uid
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uniqueness-subtrees: dc=people,dc=example,dc=com
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uniqueness-subtrees: dc=sales, dc=example,dc=com
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uniqueness-across-all-subtrees: on
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or
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uniqueness-attribute-name: uid
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uniqueness-top-entry-oc: organizationalUnit
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uniqueness-subtree-entries-oc: person
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"""
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plugins_dn = DN(('cn', 'plugins'), ('cn', 'config'))
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def __remove_update(self, update, key, value):
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statement = dict(action='remove', attr=key, value=value)
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update.setdefault('updates', []).append(statement)
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def __add_update(self, update, key, value):
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statement = dict(action='add', attr=key, value=value)
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update.setdefault('updates', []).append(statement)
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def __subtree_style(self, entry):
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"""
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old attr -> new attr
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nsslapd-pluginArg0 -> uniqueness-attribute-name
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nsslapd-pluginArg1..N -> uniqueness-subtrees[1..N]
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"""
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update = {
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'dn': entry.dn,
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'updates': [],
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}
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# nsslapd-pluginArg0 -> referint-update-delay
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attribute = entry.single_value['nsslapd-pluginArg0']
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if not attribute:
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raise ValueError("'nsslapd-pluginArg0' not found")
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self.__remove_update(update, 'nsslapd-pluginArg0', attribute)
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self.__add_update(update, 'uniqueness-attribute-name', attribute)
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entry['nsslapd-pluginArg0'] = None
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# nsslapd-pluginArg1..N -> uniqueness-subtrees[1..N]
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for key in entry.keys():
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if key.lower().startswith('nsslapd-pluginarg'):
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subtree_dn = entry.single_value[key]
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if subtree_dn:
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self.__remove_update(update, key, subtree_dn)
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self.__add_update(update, 'uniqueness-subtrees', subtree_dn)
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return update
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def __objectclass_style(self, entry):
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"""
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old attr -> new attr
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nsslapd-pluginArg?[attribute] -> uniqueness-attribute-name
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nsslapd-pluginArg?[markerobjectclass] -> uniqueness-top-entry-oc
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nsslapd-pluginArg?[requiredobjectclass](optional)
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-> uniqueness-subtree-entries-oc
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nsslapd-pluginArg?[others] -> ERROR: unexpected args
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Single value attributes.
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"""
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update = {
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'dn': entry.dn,
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'updates': [],
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}
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attribute = None
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markerobjectclass = None
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requiredobjectclass = None
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for key in entry.keys():
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if key.lower().startswith('nsslapd-pluginarg'):
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try:
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# split argument name and value
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value = entry.single_value[key]
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arg_name, arg_val = value.split('=', 1)
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except ValueError:
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# unable to split
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raise ValueError("unexpected argument %s: %s" %
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(key, value))
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arg_name = arg_name.lower()
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if arg_name == 'attribute':
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if attribute:
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raise ValueError("single value argument 'attribute' "
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"is specified mutliple times")
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attribute = arg_val
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self.__remove_update(update, key, value)
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elif arg_name == 'markerobjectclass':
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if markerobjectclass:
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raise ValueError("single value argument "
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"'markerobjectclass' "
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"is specified mutliple times")
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markerobjectclass = arg_val
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self.__remove_update(update, key, value)
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elif arg_name == 'requiredobjectclass':
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if requiredobjectclass:
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raise ValueError("single value argument "
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"'requiredobjectclass' "
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"is specified mutliple times")
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requiredobjectclass = arg_val
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self.__remove_update(update, key, value)
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else:
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raise ValueError("unexpected argument '%s: %s'" %
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(key, value))
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if not attribute:
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raise ValueError("missing required argument 'attribute'")
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if not markerobjectclass:
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raise ValueError("missing required argument 'markerobjectclass'")
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self.__add_update(update, 'uniqueness-attribute-name', attribute)
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self.__add_update(update, 'uniqueness-top-entry-oc', markerobjectclass)
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if requiredobjectclass:
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# optional argument
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self.__add_update(update, 'uniqueness-subtree-entries-oc',
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requiredobjectclass)
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return update
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def execute(self, **options):
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ldap = self.api.Backend.ldap2
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old_style_plugin_search_filter = (
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"(&"
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"(objectclass=nsSlapdPlugin)"
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"(nsslapd-pluginId=NSUniqueAttr)"
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"(nsslapd-pluginPath=libattr-unique-plugin)"
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"(nsslapd-pluginarg0=*)" # only entries with old configuration
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")"
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)
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try:
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entries, _truncated = ldap.find_entries(
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filter=old_style_plugin_search_filter,
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base_dn=self.plugins_dn,
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)
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except errors.NotFound:
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logger.debug("No uniqueness plugin entries with old style "
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"configuration found")
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return False, []
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update_list = []
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new_attributes = [
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'uniqueness-subtree-entries-oc',
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'uniqueness-top-entry-oc',
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'uniqueness-attribute-name',
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'uniqueness-subtrees',
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'uniqueness-across-all-subtrees',
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]
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for entry in entries:
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# test for mixed configuration
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if any(attr in entry for attr in new_attributes):
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logger.critical("Mixed old and new style configuration "
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"for plugin %s. Plugin will not work. "
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"Skipping plugin migration, please fix it "
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"manually",
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entry.dn)
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continue
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logger.debug("Configuration of plugin %s will be migrated "
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"to new style", entry.dn)
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try:
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# detect which configuration was used
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arg0 = entry.get('nsslapd-pluginarg0')
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if '=' in arg0:
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update = self.__objectclass_style(entry)
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else:
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update = self.__subtree_style(entry)
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except ValueError as e:
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logger.error("Unable to migrate configuration of "
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"plugin %s (%s)",
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entry.dn, e)
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else:
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update_list.append(update)
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return False, update_list
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