# Authors: # Alexander Bokovoy # # Copyright (C) 2014 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 . import logging from ipalib import Registry, errors from ipalib import Updater from ipapython.dn import DN logger = logging.getLogger(__name__) register = Registry() @register() class update_uniqueness_plugins_to_new_syntax(Updater): """ Migrate uniqueness plugins to new style syntax * OLD: * nsslapd-pluginarg0: uid nsslapd-pluginarg1: dc=people,dc=example,dc=com nsslapd-pluginarg2: dc=sales, dc=example,dc=com or nsslapd-pluginarg0: attribute=uid nsslapd-pluginarg1: markerobjectclass=organizationalUnit nsslapd-pluginarg2: requiredobjectclass=person * NEW: * uniqueness-attribute-name: uid uniqueness-subtrees: dc=people,dc=example,dc=com uniqueness-subtrees: dc=sales, dc=example,dc=com uniqueness-across-all-subtrees: on or uniqueness-attribute-name: uid uniqueness-top-entry-oc: organizationalUnit uniqueness-subtree-entries-oc: person """ plugins_dn = DN(('cn', 'plugins'), ('cn', 'config')) def __remove_update(self, update, key, value): statement = dict(action='remove', attr=key, value=value) update.setdefault('updates', []).append(statement) def __add_update(self, update, key, value): statement = dict(action='add', attr=key, value=value) update.setdefault('updates', []).append(statement) def __subtree_style(self, entry): """ old attr -> new attr nsslapd-pluginArg0 -> uniqueness-attribute-name nsslapd-pluginArg1..N -> uniqueness-subtrees[1..N] """ update = { 'dn': entry.dn, 'updates': [], } # nsslapd-pluginArg0 -> referint-update-delay attribute = entry.single_value['nsslapd-pluginArg0'] if not attribute: raise ValueError("'nsslapd-pluginArg0' not found") self.__remove_update(update, 'nsslapd-pluginArg0', attribute) self.__add_update(update, 'uniqueness-attribute-name', attribute) entry['nsslapd-pluginArg0'] = None # nsslapd-pluginArg1..N -> uniqueness-subtrees[1..N] for key in entry.keys(): if key.lower().startswith('nsslapd-pluginarg'): subtree_dn = entry.single_value[key] if subtree_dn: self.__remove_update(update, key, subtree_dn) self.__add_update(update, 'uniqueness-subtrees', subtree_dn) return update def __objectclass_style(self, entry): """ old attr -> new attr nsslapd-pluginArg?[attribute] -> uniqueness-attribute-name nsslapd-pluginArg?[markerobjectclass] -> uniqueness-top-entry-oc nsslapd-pluginArg?[requiredobjectclass](optional) -> uniqueness-subtree-entries-oc nsslapd-pluginArg?[others] -> ERROR: unexpected args Single value attributes. """ update = { 'dn': entry.dn, 'updates': [], } attribute = None markerobjectclass = None requiredobjectclass = None for key in entry.keys(): if key.lower().startswith('nsslapd-pluginarg'): try: # split argument name and value value = entry.single_value[key] arg_name, arg_val = value.split('=', 1) except ValueError: # unable to split raise ValueError("unexpected argument %s: %s" % (key, value)) arg_name = arg_name.lower() if arg_name == 'attribute': if attribute: raise ValueError("single value argument 'attribute' " "is specified mutliple times") attribute = arg_val self.__remove_update(update, key, value) elif arg_name == 'markerobjectclass': if markerobjectclass: raise ValueError("single value argument " "'markerobjectclass' " "is specified mutliple times") markerobjectclass = arg_val self.__remove_update(update, key, value) elif arg_name == 'requiredobjectclass': if requiredobjectclass: raise ValueError("single value argument " "'requiredobjectclass' " "is specified mutliple times") requiredobjectclass = arg_val self.__remove_update(update, key, value) else: raise ValueError("unexpected argument '%s: %s'" % (key, value)) if not attribute: raise ValueError("missing required argument 'attribute'") if not markerobjectclass: raise ValueError("missing required argument 'markerobjectclass'") self.__add_update(update, 'uniqueness-attribute-name', attribute) self.__add_update(update, 'uniqueness-top-entry-oc', markerobjectclass) if requiredobjectclass: # optional argument self.__add_update(update, 'uniqueness-subtree-entries-oc', requiredobjectclass) return update def execute(self, **options): ldap = self.api.Backend.ldap2 old_style_plugin_search_filter = ( "(&" "(objectclass=nsSlapdPlugin)" "(nsslapd-pluginId=NSUniqueAttr)" "(nsslapd-pluginPath=libattr-unique-plugin)" "(nsslapd-pluginarg0=*)" # only entries with old configuration ")" ) try: entries, _truncated = ldap.find_entries( filter=old_style_plugin_search_filter, base_dn=self.plugins_dn, ) except errors.NotFound: logger.debug("No uniqueness plugin entries with old style " "configuration found") return False, [] update_list = [] new_attributes = [ 'uniqueness-subtree-entries-oc', 'uniqueness-top-entry-oc', 'uniqueness-attribute-name', 'uniqueness-subtrees', 'uniqueness-across-all-subtrees', ] for entry in entries: # test for mixed configuration if any(attr in entry for attr in new_attributes): logger.critical("Mixed old and new style configuration " "for plugin %s. Plugin will not work. " "Skipping plugin migration, please fix it " "manually", entry.dn) continue logger.debug("Configuration of plugin %s will be migrated " "to new style", entry.dn) try: # detect which configuration was used arg0 = entry.get('nsslapd-pluginarg0') if '=' in arg0: update = self.__objectclass_style(entry) else: update = self.__subtree_style(entry) except ValueError as e: logger.error("Unable to migrate configuration of " "plugin %s (%s)", entry.dn, e) else: update_list.append(update) return False, update_list