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freeipa/ipalib/plugins/automember.py
Jan Cholasta 4314d02fbf Allow primary keys to use different type than unicode. 
Also return list of primary keys instead of a single unicode CSV value from
LDAPDelete-based commands.

This introduces a new capability 'primary_key_types' for backward
compatibility with old clients.

Reviewed-By: Tomas Babej <tbabej@redhat.com>
2014-04-18 14:59:20 +02:00

781 lines
26 KiB
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# Authors:
# Jr Aquino <jr.aquino@citrix.com>
#
# 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 <http://www.gnu.org/licenses/>.
import uuid
import time
import ldap as _ldap
from ipalib import api, errors, Str, StrEnum, DNParam, _, ngettext
from ipalib.plugable import Registry
from ipalib.plugins.baseldap import *
from ipalib.request import context
from ipapython.dn import DN
__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
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
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
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
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'
regex_attrs = (
Str('automemberinclusiveregex*',
cli_name='inclusive_regex',
label=_('Inclusive Regex'),
doc=_('Inclusive Regex'),
csv=True,
alwaysask=True,
),
Str('automemberexclusiveregex*',
cli_name='exclusive_regex',
label=_('Exclusive Regex'),
doc=_('Exclusive Regex'),
csv=True,
alwaysask=True,
),
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', ),
),
)
automember_rule = (
Str('cn',
cli_name='automember_rule',
label=_('Automember Rule'),
doc=_('Automember Rule'),
normalizer=lambda value: value.lower(),
),
)
@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,
'ipapermbindruletype': 'permission',
'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,
'ipapermbindruletype': 'permission',
'ipapermright': {'read', 'search', 'compare'},
'ipapermdefaultattr': {
'cn', 'objectclass', 'automembertargetgroup', 'description',
'automemberexclusiveregex', 'automemberinclusiveregex',
},
'default_privileges': {'Automember Readers',
'Automember Task Administrator'},
},
}
label = _('Auto Membership Rule')
takes_params = (
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']
),
)
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
takes_args = automember_rule
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 + group_type
takes_args = automember_rule
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 + group_type
takes_args = automember_rule
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'}
if 'key' in options:
key = options['key']
else:
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_args = 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_args = automember_rule
takes_options = group_type
msg_summary = _('Deleted automember rule "%(value)s"')
def execute(self, *keys, **options):
result = super(automember_del, self).execute(*keys, **options)
result['value'] = pkey_to_value([keys[-1]], options)
return result
@register()
class automember_find(LDAPSearch):
__doc__ = _("""
Search for automember rules.
""")
takes_options = group_type
has_output_params = LDAPSearch.has_output_params + automember_rule + regex_attrs
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_args = automember_rule
takes_options = group_type
has_output_params = LDAPRetrieve.has_output_params + regex_attrs
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_set(LDAPUpdate):
__doc__ = _("""
Set default (fallback) group for all unmatched entries.
""")
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"')
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.
""")
takes_options = group_type
msg_summary = _('Removed default (fallback) group for automember "%(value)s"')
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.
""")
takes_options = group_type
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_rebuild(Command):
__doc__ = _('Rebuild auto membership.')
# 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
has_output_params = (
DNParam(
'dn',
label=_('Task DN'),
doc=_('DN of the started task'),
),
)
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:
obj.get_dn_if_exists(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),
('cn', 'automember rebuild membership'),
('cn', 'tasks'),
('cn', 'config'))
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
else:
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))
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