# Authors: # Jr Aquino # # Copyright (C) 2011 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 uuid import time import ldap as _ldap import six from ipalib import api, errors, Str, StrEnum, DNParam, Flag, _, ngettext from ipalib import output, Method, Object from ipalib.plugable import Registry from .baseldap import ( pkey_to_value, entry_to_dict, LDAPObject, LDAPCreate, LDAPUpdate, LDAPDelete, LDAPSearch, LDAPRetrieve) from ipalib.request import context from ipapython.dn import DN if six.PY3: unicode = str __doc__ = _(""" Auto Membership Rule. """) + _(""" Bring clarity to the membership of hosts and users by configuring inclusive or exclusive regex patterns, you can automatically assign a new entries into a group or hostgroup based upon attribute information. """) + _(""" A rule is directly associated with a group by name, so you cannot create a rule without an accompanying group or hostgroup. """) + _(""" A condition is a regular expression used by 389-ds to match a new incoming entry with an automember rule. If it matches an inclusive rule then the entry is added to the appropriate group or hostgroup. """) + _(""" A default group or hostgroup could be specified for entries that do not match any rule. In case of user entries this group will be a fallback group because all users are by default members of group specified in IPA config. """) + _(""" The automember-rebuild command can be used to retroactively run automember rules against existing entries, thus rebuilding their membership. """) + _(""" EXAMPLES: """) + _(""" Add the initial group or hostgroup: ipa hostgroup-add --desc="Web Servers" webservers ipa group-add --desc="Developers" devel """) + _(""" Add the initial rule: ipa automember-add --type=hostgroup webservers ipa automember-add --type=group devel """) + _(r""" Add a condition to the rule: ipa automember-add-condition --key=fqdn --type=hostgroup --inclusive-regex=^web[1-9]+\.example\.com webservers ipa automember-add-condition --key=manager --type=group --inclusive-regex=^uid=mscott devel """) + _(r""" Add an exclusive condition to the rule to prevent auto assignment: ipa automember-add-condition --key=fqdn --type=hostgroup --exclusive-regex=^web5\.example\.com webservers """) + _(""" Add a host: ipa host-add web1.example.com """) + _(""" Add a user: ipa user-add --first=Tim --last=User --password tuser1 --manager=mscott """) + _(""" Verify automembership: ipa hostgroup-show webservers Host-group: webservers Description: Web Servers Member hosts: web1.example.com ipa group-show devel Group name: devel Description: Developers GID: 1004200000 Member users: tuser """) + _(r""" Remove a condition from the rule: ipa automember-remove-condition --key=fqdn --type=hostgroup --inclusive-regex=^web[1-9]+\.example\.com webservers """) + _(""" Modify the automember rule: ipa automember-mod """) + _(""" Set the default (fallback) target group: ipa automember-default-group-set --default-group=webservers --type=hostgroup ipa automember-default-group-set --default-group=ipausers --type=group """) + _(""" Remove the default (fallback) target group: ipa automember-default-group-remove --type=hostgroup ipa automember-default-group-remove --type=group """) + _(""" Show the default (fallback) target group: ipa automember-default-group-show --type=hostgroup ipa automember-default-group-show --type=group """) + _(""" Find all of the automember rules: ipa automember-find """) + _(""" Find all of the orphan automember rules: ipa automember-find-orphans --type=hostgroup Find all of the orphan automember rules and remove them: ipa automember-find-orphans --type=hostgroup --remove """) + _(""" Display a automember rule: ipa automember-show --type=hostgroup webservers ipa automember-show --type=group devel """) + _(""" Delete an automember rule: ipa automember-del --type=hostgroup webservers ipa automember-del --type=group devel """) + _(""" Rebuild membership for all users: ipa automember-rebuild --type=group """) + _(""" Rebuild membership for all hosts: ipa automember-rebuild --type=hostgroup """) + _(""" Rebuild membership for specified users: ipa automember-rebuild --users=tuser1 --users=tuser2 """) + _(""" Rebuild membership for specified hosts: ipa automember-rebuild --hosts=web1.example.com --hosts=web2.example.com """) register = Registry() # Options used by Condition Add and Remove. INCLUDE_RE = 'automemberinclusiveregex' EXCLUDE_RE = 'automemberexclusiveregex' REBUILD_TASK_CONTAINER = DN(('cn', 'automember rebuild membership'), ('cn', 'tasks'), ('cn', 'config')) regex_attrs = ( Str('automemberinclusiveregex*', cli_name='inclusive_regex', label=_('Inclusive Regex'), doc=_('Inclusive Regex'), alwaysask=True, flags={'no_create', 'no_update', 'no_search'}, ), Str('automemberexclusiveregex*', cli_name='exclusive_regex', label=_('Exclusive Regex'), doc=_('Exclusive Regex'), alwaysask=True, flags={'no_create', 'no_update', 'no_search'}, ), ) regex_key = ( Str('key', label=_('Attribute Key'), doc=_('Attribute to filter via regex. For example fqdn for a host, or manager for a user'), flags=['no_create', 'no_update', 'no_search'] ), ) group_type = ( StrEnum('type', label=_('Grouping Type'), doc=_('Grouping to which the rule applies'), values=(u'group', u'hostgroup', ), ), ) @register() class automember(LDAPObject): """ Bring automember to a hostgroup with an Auto Membership Rule. """ container_dn = api.env.container_automember object_name = 'Automember rule' object_name_plural = 'Automember rules' object_class = ['top', 'automemberregexrule'] permission_filter_objectclasses = ['automemberregexrule'] default_attributes = [ 'automemberinclusiveregex', 'automemberexclusiveregex', 'cn', 'automembertargetgroup', 'description', 'automemberdefaultgroup' ] managed_permissions = { 'System: Read Automember Definitions': { 'non_object': True, 'ipapermlocation': DN(container_dn, api.env.basedn), 'ipapermtargetfilter': {'(objectclass=automemberdefinition)'}, 'replaces_global_anonymous_aci': True, 'ipapermright': {'read', 'search', 'compare'}, 'ipapermdefaultattr': { 'objectclass', 'cn', 'automemberscope', 'automemberfilter', 'automembergroupingattr', 'automemberdefaultgroup', 'automemberdisabled', }, 'default_privileges': {'Automember Readers', 'Automember Task Administrator'}, }, 'System: Read Automember Rules': { 'replaces_global_anonymous_aci': True, 'ipapermright': {'read', 'search', 'compare'}, 'ipapermdefaultattr': { 'cn', 'objectclass', 'automembertargetgroup', 'description', 'automemberexclusiveregex', 'automemberinclusiveregex', }, 'default_privileges': {'Automember Readers', 'Automember Task Administrator'}, }, 'System: Read Automember Tasks': { 'non_object': True, 'ipapermlocation': DN('cn=tasks', 'cn=config'), 'ipapermtarget': DN('cn=*', REBUILD_TASK_CONTAINER), 'replaces_global_anonymous_aci': True, 'ipapermright': {'read', 'search', 'compare'}, 'ipapermdefaultattr': {'*'}, 'default_privileges': {'Automember Task Administrator'}, }, } label = _('Auto Membership Rule') takes_params = ( Str('cn', cli_name='automember_rule', label=_('Automember Rule'), doc=_('Automember Rule'), primary_key=True, normalizer=lambda value: value.lower(), flags={'no_search'}, ), Str('description?', cli_name='desc', label=_('Description'), doc=_('A description of this auto member rule'), ), Str('automemberdefaultgroup?', cli_name='default_group', label=_('Default (fallback) Group'), doc=_('Default group for entries to land'), flags=['no_create', 'no_update', 'no_search'] ), ) + regex_attrs def dn_exists(self, otype, oname): ldap = self.api.Backend.ldap2 dn = self.api.Object[otype].get_dn(oname) try: entry = ldap.get_entry(dn, []) except errors.NotFound: raise errors.NotFound( reason=_(u'%(otype)s "%(oname)s" not found') % dict(otype=otype, oname=oname) ) return entry.dn def get_dn(self, *keys, **options): if self.parent_object: parent_dn = self.api.Object[self.parent_object].get_dn(*keys[:-1]) else: parent_dn = DN(self.container_dn, api.env.basedn) grouptype = options['type'] try: ndn = DN(('cn', keys[-1]), ('cn', grouptype), parent_dn) except IndexError: ndn = DN(('cn', grouptype), parent_dn) return ndn def check_attr(self, attr): """ Verify that the user supplied key is a valid attribute in the schema """ ldap = self.api.Backend.ldap2 obj = ldap.schema.get_obj(_ldap.schema.AttributeType, attr) if obj is not None: return obj else: raise errors.NotFound(reason=_('%s is not a valid attribute.') % attr) def automember_container_exists(ldap): try: ldap.get_entry(DN(api.env.container_automember, api.env.basedn), []) except errors.NotFound: return False return True @register() class automember_add(LDAPCreate): __doc__ = _(""" Add an automember rule. """) takes_options = LDAPCreate.takes_options + group_type msg_summary = _('Added automember rule "%(value)s"') def pre_callback(self, ldap, dn, entry_attrs, *keys, **options): assert isinstance(dn, DN) entry_attrs['cn'] = keys[-1] if not automember_container_exists(self.api.Backend.ldap2): raise errors.NotFound(reason=_('Auto Membership is not configured')) entry_attrs['automembertargetgroup'] = self.obj.dn_exists(options['type'], keys[-1]) return dn def execute(self, *keys, **options): result = super(automember_add, self).execute(*keys, **options) result['value'] = pkey_to_value(keys[-1], options) return result @register() class automember_add_condition(LDAPUpdate): __doc__ = _(""" Add conditions to an automember rule. """) has_output_params = ( Str('failed', label=_('Failed to add'), flags=['suppress_empty'], ), ) takes_options = regex_attrs + regex_key + group_type msg_summary = _('Added condition(s) to "%(value)s"') # Prepare the output to expect failed results has_output = ( output.summary, output.Entry('result'), output.value, output.Output('failed', type=dict, doc=_('Conditions that could not be added'), ), output.Output('completed', type=int, doc=_('Number of conditions added'), ), ) def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options): assert isinstance(dn, DN) # Check to see if the automember rule exists try: dn = ldap.get_entry(dn, []).dn except errors.NotFound: raise errors.NotFound(reason=_(u'Auto member rule: %s not found!') % keys[0]) # Define container key key = options['key'] # Check to see if the attribute is valid self.obj.check_attr(key) key = '%s=' % key completed = 0 failed = {'failed': {}} for attr in (INCLUDE_RE, EXCLUDE_RE): failed['failed'][attr] = [] if attr in options and options[attr]: entry_attrs[attr] = [key + condition for condition in options[attr]] completed += len(entry_attrs[attr]) try: old_entry = ldap.get_entry(dn, [attr]) for regex in old_entry.keys(): if not isinstance(entry_attrs[regex], (list, tuple)): entry_attrs[regex] = [entry_attrs[regex]] duplicate = set(old_entry[regex]) & set(entry_attrs[regex]) if len(duplicate) > 0: completed -= 1 else: entry_attrs[regex] = list(entry_attrs[regex]) + old_entry[regex] except errors.NotFound: failed['failed'][attr].append(regex) entry_attrs = entry_to_dict(entry_attrs, **options) # Set failed and completed to they can be harvested in the execute super setattr(context, 'failed', failed) setattr(context, 'completed', completed) setattr(context, 'entry_attrs', entry_attrs) # Make sure to returned the failed results if there is nothing to remove if completed == 0: ldap.get_entry(dn, attrs_list) raise errors.EmptyModlist return dn def execute(self, *keys, **options): __doc__ = _(""" Override this so we can add completed and failed to the return result. """) try: result = super(automember_add_condition, self).execute(*keys, **options) except errors.EmptyModlist: result = {'result': getattr(context, 'entry_attrs'), 'value': keys[-1]} result['failed'] = getattr(context, 'failed') result['completed'] = getattr(context, 'completed') result['value'] = pkey_to_value(keys[-1], options) return result @register() class automember_remove_condition(LDAPUpdate): __doc__ = _(""" Remove conditions from an automember rule. """) takes_options = regex_attrs + regex_key + group_type msg_summary = _('Removed condition(s) from "%(value)s"') # Prepare the output to expect failed results has_output = ( output.summary, output.Entry('result'), output.value, output.Output('failed', type=dict, doc=_('Conditions that could not be removed'), ), output.Output('completed', type=int, doc=_('Number of conditions removed'), ), ) def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options): assert isinstance(dn, DN) # Check to see if the automember rule exists try: ldap.get_entry(dn, []) except errors.NotFound: raise errors.NotFound(reason=_(u'Auto member rule: %s not found!') % keys[0]) # Define container key type_attr_default = {'group': 'manager', 'hostgroup': 'fqdn'} key = options.get('key', type_attr_default[options['type']]) key = '%s=' % key completed = 0 failed = {'failed': {}} # Check to see if there are existing exclusive conditions present. dn = ldap.get_entry(dn, [EXCLUDE_RE]).dn for attr in (INCLUDE_RE, EXCLUDE_RE): failed['failed'][attr] = [] if attr in options and options[attr]: entry_attrs[attr] = [key + condition for condition in options[attr]] entry_attrs_ = ldap.get_entry(dn, [attr]) old_entry = entry_attrs_.get(attr, []) for regex in entry_attrs[attr]: if regex in old_entry: old_entry.remove(regex) completed += 1 else: failed['failed'][attr].append(regex) entry_attrs[attr] = old_entry entry_attrs = entry_to_dict(entry_attrs, **options) # Set failed and completed to they can be harvested in the execute super setattr(context, 'failed', failed) setattr(context, 'completed', completed) setattr(context, 'entry_attrs', entry_attrs) # Make sure to returned the failed results if there is nothing to remove if completed == 0: ldap.get_entry(dn, attrs_list) raise errors.EmptyModlist return dn def execute(self, *keys, **options): __doc__ = _(""" Override this so we can set completed and failed. """) try: result = super(automember_remove_condition, self).execute(*keys, **options) except errors.EmptyModlist: result = {'result': getattr(context, 'entry_attrs'), 'value': keys[-1]} result['failed'] = getattr(context, 'failed') result['completed'] = getattr(context, 'completed') result['value'] = pkey_to_value(keys[-1], options) return result @register() class automember_mod(LDAPUpdate): __doc__ = _(""" Modify an automember rule. """) takes_options = LDAPUpdate.takes_options + group_type msg_summary = _('Modified automember rule "%(value)s"') def execute(self, *keys, **options): result = super(automember_mod, self).execute(*keys, **options) result['value'] = pkey_to_value(keys[-1], options) return result @register() class automember_del(LDAPDelete): __doc__ = _(""" Delete an automember rule. """) takes_options = group_type msg_summary = _('Deleted automember rule "%(value)s"') @register() class automember_find(LDAPSearch): __doc__ = _(""" Search for automember rules. """) takes_options = group_type msg_summary = ngettext( '%(count)d rules matched', '%(count)d rules matched', 0 ) def pre_callback(self, ldap, filters, attrs_list, base_dn, scope, *args, **options): assert isinstance(base_dn, DN) scope = ldap.SCOPE_SUBTREE ndn = DN(('cn', options['type']), base_dn) return (filters, ndn, scope) @register() class automember_show(LDAPRetrieve): __doc__ = _(""" Display information about an automember rule. """) takes_options = group_type def execute(self, *keys, **options): result = super(automember_show, self).execute(*keys, **options) result['value'] = pkey_to_value(keys[-1], options) return result @register() class automember_default_group(automember): managed_permissions = {} def get_params(self): for param in super(automember_default_group, self).get_params(): if param.name == 'cn': continue yield param @register() class automember_default_group_set(LDAPUpdate): __doc__ = _(""" Set default (fallback) group for all unmatched entries. """) obj_name = 'automember_default_group' takes_options = ( Str('automemberdefaultgroup', cli_name='default_group', label=_('Default (fallback) Group'), doc=_('Default (fallback) group for entries to land'), flags=['no_create', 'no_update'] ), ) + group_type msg_summary = _('Set default (fallback) group for automember "%(value)s"') has_output = output.simple_entry def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options): dn = DN(('cn', options['type']), api.env.container_automember, api.env.basedn) entry_attrs['automemberdefaultgroup'] = self.obj.dn_exists(options['type'], options['automemberdefaultgroup']) return dn def execute(self, *keys, **options): result = super(automember_default_group_set, self).execute(*keys, **options) result['value'] = pkey_to_value(options['type'], options) return result @register() class automember_default_group_remove(LDAPUpdate): __doc__ = _(""" Remove default (fallback) group for all unmatched entries. """) obj_name = 'automember_default_group' takes_options = group_type msg_summary = _('Removed default (fallback) group for automember "%(value)s"') has_output = output.simple_entry def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options): dn = DN(('cn', options['type']), api.env.container_automember, api.env.basedn) attr = 'automemberdefaultgroup' entry_attrs_ = ldap.get_entry(dn, [attr]) if attr not in entry_attrs_: raise errors.NotFound(reason=_(u'No default (fallback) group set')) else: entry_attrs[attr] = [] return entry_attrs_.dn def post_callback(self, ldap, dn, entry_attrs, *keys, **options): assert isinstance(dn, DN) if 'automemberdefaultgroup' not in entry_attrs: entry_attrs['automemberdefaultgroup'] = unicode(_('No default (fallback) group set')) return dn def execute(self, *keys, **options): result = super(automember_default_group_remove, self).execute(*keys, **options) result['value'] = pkey_to_value(options['type'], options) return result @register() class automember_default_group_show(LDAPRetrieve): __doc__ = _(""" Display information about the default (fallback) automember groups. """) obj_name = 'automember_default_group' takes_options = group_type has_output = output.simple_entry def pre_callback(self, ldap, dn, attrs_list, *keys, **options): dn = DN(('cn', options['type']), api.env.container_automember, api.env.basedn) return dn def post_callback(self, ldap, dn, entry_attrs, *keys, **options): assert isinstance(dn, DN) if 'automemberdefaultgroup' not in entry_attrs: entry_attrs['automemberdefaultgroup'] = unicode(_('No default (fallback) group set')) return dn def execute(self, *keys, **options): result = super(automember_default_group_show, self).execute(*keys, **options) result['value'] = pkey_to_value(options['type'], options) return result @register() class automember_task(Object): takes_params = ( DNParam( 'dn', label=_('Task DN'), doc=_('DN of the started task'), ), ) @register() class automember_rebuild(Method): __doc__ = _('Rebuild auto membership.') obj_name = 'automember_task' attr_name = 'rebuild' # TODO: Add a --dry-run option: # https://fedorahosted.org/freeipa/ticket/3936 takes_options = ( group_type[0].clone( required=False, label=_('Rebuild membership for all members of a grouping') ), Str( 'users*', label=_('Users'), doc=_('Rebuild membership for specified users'), ), Str( 'hosts*', label=_('Hosts'), doc=_('Rebuild membership for specified hosts'), ), Flag( 'no_wait?', default=False, label=_('No wait'), doc=_("Don't wait for rebuilding membership"), ), ) has_output = output.standard_entry def validate(self, **kw): """ Validation rules: - at least one of 'type', 'users', 'hosts' is required - 'users' and 'hosts' cannot be combined together - if 'users' and 'type' are specified, 'type' must be 'group' - if 'hosts' and 'type' are specified, 'type' must be 'hostgroup' """ super(automember_rebuild, self).validate(**kw) users, hosts, gtype = kw.get('users'), kw.get('hosts'), kw.get('type') if not (gtype or users or hosts): raise errors.MutuallyExclusiveError( reason=_('at least one of options: type, users, hosts must be ' 'specified') ) if users and hosts: raise errors.MutuallyExclusiveError( reason=_("users and hosts cannot both be set") ) if gtype == 'group' and hosts: raise errors.MutuallyExclusiveError( reason=_("hosts cannot be set when type is 'group'") ) if gtype == 'hostgroup' and users: raise errors.MutuallyExclusiveError( reason=_("users cannot be set when type is 'hostgroup'") ) def execute(self, *keys, **options): ldap = self.api.Backend.ldap2 cn = str(uuid.uuid4()) gtype = options.get('type') if not gtype: gtype = 'group' if options.get('users') else 'hostgroup' types = { 'group': ( 'user', 'users', DN(api.env.container_user, api.env.basedn) ), 'hostgroup': ( 'host', 'hosts', DN(api.env.container_host, api.env.basedn) ), } obj_name, opt_name, basedn = types[gtype] obj = self.api.Object[obj_name] names = options.get(opt_name) if names: for name in names: try: obj.get_dn_if_exists(name) except errors.NotFound: raise obj.handle_not_found(name) search_filter = ldap.make_filter_from_attr( obj.primary_key.name, names, rules=ldap.MATCH_ANY ) else: search_filter = '(%s=*)' % obj.primary_key.name task_dn = DN(('cn', cn), REBUILD_TASK_CONTAINER) entry = ldap.make_entry( task_dn, objectclass=['top', 'extensibleObject'], cn=[cn], basedn=[basedn], filter=[search_filter], scope=['sub'], ttl=[3600]) ldap.add_entry(entry) summary = _('Automember rebuild membership task started') result = {'dn': task_dn} if not options.get('no_wait'): summary = _('Automember rebuild membership task completed') result = {} start_time = time.time() while True: try: task = ldap.get_entry(task_dn) except errors.NotFound: break if 'nstaskexitcode' in task: if str(task.single_value['nstaskexitcode']) == '0': summary=task.single_value['nstaskstatus'] break raise errors.DatabaseError( desc=task.single_value['nstaskstatus'], info=_("Task DN = '%s'" % task_dn)) time.sleep(1) if time.time() > (start_time + 60): raise errors.TaskTimeout(task=_('Automember'), task_dn=task_dn) return dict( result=result, summary=unicode(summary), value=pkey_to_value(None, options)) @register() class automember_find_orphans(LDAPSearch): __doc__ = _(""" Search for orphan automember rules. The command might need to be run as a privileged user user to get all orphan rules. """) takes_options = group_type + ( Flag( 'remove?', doc=_("Remove orphan automember rules"), ), ) msg_summary = ngettext( '%(count)d rules matched', '%(count)d rules matched', 0 ) def execute(self, *keys, **options): results = super().execute(*keys, **options) remove_option = options.get('remove') pkey_only = options.get('pkey_only', False) ldap = self.obj.backend orphans = [] for entry in results["result"]: am_dn_entry = entry['automembertargetgroup'][0] # Make DN for --raw option if not isinstance(am_dn_entry, DN): am_dn_entry = DN(am_dn_entry) try: ldap.get_entry(am_dn_entry) except errors.NotFound: if pkey_only: # For pkey_only remove automembertargetgroup del(entry['automembertargetgroup']) orphans.append(entry) if remove_option: ldap.delete_entry(entry['dn']) results["result"][:] = orphans results["count"] = len(orphans) return results def pre_callback(self, ldap, filters, attrs_list, base_dn, scope, *args, **options): assert isinstance(base_dn, DN) scope = ldap.SCOPE_SUBTREE ndn = DN(('cn', options['type']), base_dn) if options.get('pkey_only', False): # For pkey_only add automembertargetgroup attrs_list.append('automembertargetgroup') return filters, ndn, scope