freeipa/ipalib/plugins/group.py
Rob Crittenden 5b894d1fb7 Allow decoupling of user-private groups.
To do this we need to break the link manually on both sides, the user and
the group.

We also have to verify in advance that the user performing this is allowed
to do both. Otherwise the user could be decoupled but not the group
leaving it in a quasi broken state that only ldapmodify could fix.

ticket 75
2010-08-10 16:41:47 -04:00

297 lines
8.5 KiB
Python

# Authors:
# Rob Crittenden <rcritten@redhat.com>
# Pavel Zuna <pzuna@redhat.com>
#
# Copyright (C) 2009 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; version 2 only
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Groups of users
Manage groups of users. By default new groups are not Posix groups.
You can mark it as Posix at creation time with the --posix flag and
can promose a non-Posix group using the --posix flag in group-mod.
Once a group is a Posix group there is no way to undo this.
Every group must have a description.
Posix groups must have a group id number (gid). Changing a gid is
supported but can have impact on your file permissions.
EXAMPLES:
Add a new group:
ipa group-add --desc='local administrators' localadmins
Add a new posix group:
ipa group-add --posix --desc='remote administrators' remoteadmins
Promote a non-posix group to posix:
ipa group-mod --posix localadmins
Create a group with a specific group ID number"
ipa group-add --posix --gid=500 --desc='unix admins' unixadmins
Remove a group:
ipa group-del unixadmins
Manage group membership, nested groups:
ipa group-add-member --groups=remoteadmins localadmins
Manage group membership, users:
ipa group-add-member --users=test1,test2 localadmins
Manage group membership, users:
ipa group-remove-member --users=test2 localadmins
Show a group:
ipa group-show localadmins
"""
from ipalib import api
from ipalib import Int, Str
from ipalib.plugins.baseldap import *
from ipalib import _, ngettext
class group(LDAPObject):
"""
Group object.
"""
container_dn = api.env.container_group
object_name = 'group'
object_name_plural = 'groups'
object_class = ['ipausergroup']
object_class_config = 'ipagroupobjectclasses'
search_attributes_config = 'ipagroupsearchfields'
default_attributes = [
'cn', 'description', 'gidnumber', 'member', 'memberof'
]
uuid_attribute = 'ipauniqueid'
attribute_members = {
'member': ['user', 'group'],
'memberof': ['group', 'netgroup', 'rolegroup', 'taskgroup'],
}
label = _('User Groups')
takes_params = (
Str('cn',
pattern='^[a-zA-Z0-9_.][a-zA-Z0-9_.-]{0,30}[a-zA-Z0-9_.$-]?$',
pattern_errmsg='may only include letters, numbers, _, -, . and $',
maxlength=33,
cli_name='name',
label=_('Group name'),
primary_key=True,
normalizer=lambda value: value.lower(),
),
Str('description',
cli_name='desc',
label=_('Description'),
doc=_('Group description'),
),
Int('gidnumber?',
cli_name='gid',
label=_('GID'),
doc=_('GID (use this option to set it manually)'),
),
Str('member_group?',
label=_('Member groups'),
flags=['no_create', 'no_update', 'no_search'],
),
Str('member_user?',
label=_('Member users'),
flags=['no_create', 'no_update', 'no_search'],
),
)
api.register(group)
class group_add(LDAPCreate):
"""
Create new group.
"""
msg_summary = _('Added group "%(value)s"')
takes_options = LDAPCreate.takes_options + (
Flag('posix',
cli_name='posix',
doc=_('Create as posix group?'),
),
)
def pre_callback(self, ldap, dn, entry_attrs, attrs_list, *keys, **options):
if options['posix'] or 'gidnumber' in options:
entry_attrs['objectclass'].append('posixgroup')
if not 'gidnumber' in options:
entry_attrs['gidnumber'] = 999
return dn
api.register(group_add)
class group_del(LDAPDelete):
"""
Delete group.
"""
msg_summary = _('Deleted group "%(value)s"')
def pre_callback(self, ldap, dn, *keys, **options):
config = ldap.get_ipa_config()[1]
def_primary_group = config.get('ipadefaultprimarygroup', '')
def_primary_group_dn = group_dn = self.obj.get_dn(def_primary_group)
if dn == def_primary_group_dn:
raise errors.DefaultGroup()
(group_dn, group_attrs) = ldap.get_entry(dn)
if 'mepmanagedby' in group_attrs:
raise errors.ManagedGroupError()
return dn
def post_callback(self, ldap, dn, *keys, **options):
try:
api.Command['pwpolicy_del'](keys[-1])
except errors.NotFound:
pass
return True
api.register(group_del)
class group_mod(LDAPUpdate):
"""
Modify group.
"""
msg_summary = _('Modified group "%(value)s"')
takes_options = LDAPUpdate.takes_options + (
Flag('posix',
cli_name='posix',
doc=_('change to posix group'),
),
)
def pre_callback(self, ldap, dn, entry_attrs, *keys, **options):
if options['posix'] or 'gidnumber' in options:
(dn, old_entry_attrs) = ldap.get_entry(dn, ['objectclass'])
if 'posixgroup' in old_entry_attrs['objectclass']:
if options['posix']:
raise errors.AlreadyPosixGroup()
else:
old_entry_attrs['objectclass'].append('posixgroup')
entry_attrs['objectclass'] = old_entry_attrs['objectclass']
if not 'gidnumber' in options:
entry_attrs['gidnumber'] = 999
return dn
api.register(group_mod)
class group_find(LDAPSearch):
"""
Search for groups.
"""
msg_summary = ngettext(
'%(count)d group matched', '%(count)d groups matched', 0
)
api.register(group_find)
class group_show(LDAPRetrieve):
"""
Display group.
"""
api.register(group_show)
class group_add_member(LDAPAddMember):
"""
Add members to group.
"""
api.register(group_add_member)
class group_remove_member(LDAPRemoveMember):
"""
Remove members from group.
"""
api.register(group_remove_member)
class group_detach(LDAPRemoveMember):
"""
Detach a managed group from a user
"""
has_output = output.standard_value
msg_summary = _('Detached group "%(value)s" from user "%(value)s"')
def execute(self, *keys, **options):
"""
This requires updating both the user and the group. We first need to
verify that both the user and group can be updated, then we go
about our work. We don't want a situation where only the user or
group can be modified and we're left in a bad state.
"""
ldap = self.obj.backend
group_dn = self.obj.get_dn(*keys, **options)
user_dn = self.api.Object['user'].get_dn(*keys)
if (not ldap.can_write(user_dn, "objectclass") or
not ldap.can_write(user_dn, "mepManagedEntry")):
raise errors.ACIError(info=_('not allowed to modify user entries'))
if (not ldap.can_write(group_dn, "objectclass") or
not ldap.can_write(group_dn, "mepManagedBy")):
raise errors.ACIError(info=_('not allowed to modify group entries'))
(user_dn, user_attrs) = ldap.get_entry(user_dn)
objectclasses = user_attrs['objectclass']
try:
i = objectclasses.index('mepOriginEntry')
except ValueError:
raise NotFound(reason=_('Not a managed group'))
del objectclasses[i]
update_attrs = {'objectclass': objectclasses, 'mepManagedEntry': None}
ldap.update_entry(user_dn, update_attrs)
(group_dn, group_attrs) = ldap.get_entry(group_dn)
objectclasses = group_attrs['objectclass']
try:
i = objectclasses.index('mepManagedEntry')
except ValueError:
# this should never happen
raise NotFound(reason=_('Not a managed group'))
del objectclasses[i]
update_attrs = {'objectclass': objectclasses, 'mepManagedBy': None}
ldap.update_entry(group_dn, update_attrs)
return dict(
result=True,
value=keys[0],
)
api.register(group_detach)