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Add Object metadata and update plugin for managed permissions
The default read permission is added for Netgroup as an example. Part of the work for: https://fedorahosted.org/freeipa/ticket/3566 Design: http://www.freeipa.org/page/V3/Managed_Read_permissions Reviewed-By: Martin Kosek <mkosek@redhat.com>
This commit is contained in:
Petr Viktorin
parent
1df9b5836a
commit
f4de4a2aa7
@ -469,6 +469,7 @@ class LDAPObject(Object):
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}
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label = _('Entry')
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label_singular = _('Entry')
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managed_permissions = {}
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container_not_found_msg = _('container entry (%(container)s) not found')
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parent_not_found_msg = _('%(parent)s: %(oname)s not found')
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@ -105,6 +105,25 @@ class netgroup(LDAPObject):
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'memberuser': ('Member', '', 'no_'),
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'memberhost': ('Member', '', 'no_'),
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}
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managed_permissions = {
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'System: Read Netgroups': {
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'replaces_global_anonymous_aci': True,
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'ipapermbindruletype': 'all',
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'ipapermright': {'read', 'search', 'compare'},
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'ipapermdefaultattr': {
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'cn', 'description', 'hostcategory', 'ipaenabledflag',
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'ipauniqueid', 'nisdomainname', 'usercategory'
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},
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},
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'System: Read Netgroup Membership': {
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'replaces_global_anonymous_aci': True,
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'ipapermbindruletype': 'all',
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'ipapermright': {'read', 'search', 'compare'},
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'ipapermdefaultattr': {
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'externalhost', 'member', 'memberof', 'memberuser'
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},
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},
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}
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label = _('Netgroups')
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label_singular = _('Netgroup')
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160
ipaserver/install/plugins/update_managed_permissions.py
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160
ipaserver/install/plugins/update_managed_permissions.py
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@ -0,0 +1,160 @@
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# Authors:
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# Petr Viktorin <pviktori@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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from ipalib import errors
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from ipapython.dn import DN
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from ipalib.plugable import Registry
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from ipalib.plugins import aci
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from ipalib.plugins.permission import permission
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from ipaserver.plugins.ldap2 import ldap2
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from ipaserver.install.plugins import LAST
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from ipaserver.install.plugins.baseupdate import PostUpdate
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register = Registry()
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@register()
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class update_managed_permissions(PostUpdate):
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"""Update managed permissions after an update.
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Update managed permissions according to templates specified in plugins.
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For read permissions, puts any attributes specified in the legacy
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Anonymous access ACI in the exclude list when creating the permission.
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"""
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order = LAST
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def get_anonymous_read_blacklist(self, ldap):
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"""Get the list of attributes from the legacy anonymous access ACI"""
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aciname = u'Enable Anonymous access'
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aciprefix = u'none'
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base_entry = ldap.get_entry(self.api.env.basedn, ['aci'])
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acistrs = base_entry.get('aci', [])
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acilist = aci._convert_strings_to_acis(acistrs)
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try:
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rawaci = aci._find_aci_by_name(acilist, aciprefix, aciname)
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except errors.NotFound:
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self.log.info('Anonymous ACI not found, using no blacklist')
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return []
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return rawaci.target['targetattr']['expression']
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def execute(self, **options):
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ldap = self.api.Backend[ldap2]
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anonymous_read_blacklist = self.get_anonymous_read_blacklist(ldap)
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self.log.info('Anonymous read blacklist: %s', anonymous_read_blacklist)
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for obj in self.api.Object():
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managed_permissions = getattr(obj, 'managed_permissions', {})
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if managed_permissions:
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self.log.info('Updating managed permissions for %s', obj.name)
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for name, template in managed_permissions.items():
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assert name.startswith('System:')
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self.update_permission(ldap,
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obj,
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unicode(name),
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template,
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anonymous_read_blacklist)
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return False, False, ()
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def update_permission(self, ldap, obj, name, template,
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anonymous_read_blacklist):
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"""Update the given permission and the corresponding ACI"""
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dn = self.api.Object[permission].get_dn(name)
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try:
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attrs_list = self.api.Object[permission].default_attributes
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entry = ldap.get_entry(dn, attrs_list)
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is_new = False
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except errors.NotFound:
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entry = ldap.make_entry(dn)
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is_new = True
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self.log.info('Updating managed permission: %s', name)
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self.update_entry(obj, entry, template,
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anonymous_read_blacklist, is_new=is_new)
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if is_new:
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ldap.add_entry(entry)
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else:
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try:
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ldap.update_entry(entry)
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except errors.EmptyModlist:
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self.log.debug('No changes to permission: %s', name)
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return
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self.log.debug('Updating ACI for managed permission: %s', name)
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self.api.Object[permission].update_aci(entry)
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def update_entry(self, obj, entry, template,
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anonymous_read_blacklist, is_new):
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"""Update the given permission Entry (without contacting LDAP)"""
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[name_ava] = entry.dn[0]
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assert name_ava.attr == 'cn'
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name = name_ava.value
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entry.single_value['cn'] = name
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template = dict(template)
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# Common attributes
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entry['objectclass'] = self.api.Object[permission].object_class
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entry['ipapermissiontype'] = [u'SYSTEM', u'V2', u'MANAGED']
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# Object-specific attributes
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ldap_filter = ['(objectclass=%s)' % oc
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for oc in obj.permission_filter_objectclasses]
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entry['ipapermtargetfilter'] = ldap_filter
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ipapermlocation = DN(obj.container_dn, self.api.env.basedn)
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entry.single_value['ipapermlocation'] = ipapermlocation
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# Attributes from template
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bindruletype = template.pop('ipapermbindruletype')
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entry.single_value['ipapermbindruletype'] = bindruletype
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entry['ipapermright'] = list(template.pop('ipapermright'))
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# Add to the set of default attributes
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attributes = set(template.pop('ipapermdefaultattr', ()))
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attributes.update(entry.get('ipapermdefaultattr', ()))
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attributes = set(a.lower() for a in attributes)
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entry['ipapermdefaultattr'] = list(attributes)
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# Exclude attributes filtered from the global read ACI
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if template.pop('replaces_global_anonymous_aci', False) and is_new:
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read_blacklist = set(a.lower() for a in anonymous_read_blacklist)
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read_blacklist &= attributes
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if read_blacklist:
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self.log.info('Excluded attributes for %s: %s',
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name, ', '.join(read_blacklist))
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entry['ipapermexcludedattr'] = list(read_blacklist)
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# Sanity check
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if template:
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raise ValueError(
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'Unknown key(s) in managed permission template %s: %s' % (
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name, ', '.join(template.keys())))
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