633 lines
25 KiB
Python
633 lines
25 KiB
Python
# Copyright 2015 OpenStack Foundation
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# All Rights Reserved
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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NSX-V3 Plugin security & Distributed Firewall integration module
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"""
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from distutils import version
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from oslo_log import log
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from oslo_utils import excutils
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from vmware_nsxlib.v3 import exceptions
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from vmware_nsxlib.v3 import nsx_constants as consts
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from vmware_nsxlib.v3 import utils
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LOG = log.getLogger(__name__)
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PORT_SG_SCOPE = 'os-security-group'
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class NsxLibNsGroup(utils.NsxLibApiBase):
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def __init__(self, client, nsxlib_config, firewall_section_handler,
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nsxlib=None):
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self.firewall_section = firewall_section_handler
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super(NsxLibNsGroup, self).__init__(client, nsxlib_config,
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nsxlib=nsxlib)
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@property
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def uri_segment(self):
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return 'ns-groups'
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@property
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def resource_type(self):
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return 'NSGroup'
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def update_nsgroup_and_section(self, name, description, logging,
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nsgroup_id, section_id,
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log_sg_allowed_traffic):
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logging = (log_sg_allowed_traffic or logging)
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rules = self.firewall_section._process_rules_logging_for_update(
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section_id, logging)
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self.update(nsgroup_id, name, description)
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self.firewall_section.update(section_id, name, description,
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rules=rules)
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def update_lport_nsgroups(self, lport_id, original_nsgroups,
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updated_nsgroups):
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"""Update the NSgroups that the logical ports belongs to"""
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added = set(updated_nsgroups) - set(original_nsgroups)
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removed = set(original_nsgroups) - set(updated_nsgroups)
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for nsgroup_id in added:
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try:
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self.add_members(
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nsgroup_id, consts.TARGET_TYPE_LOGICAL_PORT,
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[lport_id])
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except exceptions.NSGroupIsFull:
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for nsgroup_id in added:
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# NOTE(roeyc): If the port was not added to the nsgroup
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# yet, then this request will silently fail.
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self.remove_member(
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nsgroup_id, consts.TARGET_TYPE_LOGICAL_PORT,
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lport_id)
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raise exceptions.SecurityGroupMaximumCapacityReached(
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sg_id=nsgroup_id)
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except exceptions.ResourceNotFound:
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with excutils.save_and_reraise_exception():
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LOG.error("NSGroup %s doesn't exists", nsgroup_id)
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for nsgroup_id in removed:
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self.remove_member(
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nsgroup_id, consts.TARGET_TYPE_LOGICAL_PORT, lport_id)
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def get_nsservice(self, resource_type, **properties):
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service = {'resource_type': resource_type}
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service.update(properties)
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return {'service': service}
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def get_nsgroup_complex_expression(self, expressions):
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return {'resource_type': consts.NSGROUP_COMPLEX_EXP,
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'expressions': expressions}
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def get_switch_tag_expression(self, scope, tag):
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return {'resource_type': consts.NSGROUP_TAG_EXP,
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'target_type': consts.TARGET_TYPE_LOGICAL_SWITCH,
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'scope': scope,
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'tag': tag}
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def get_port_tag_expression(self, scope, tag):
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return {'resource_type': consts.NSGROUP_TAG_EXP,
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'target_type': consts.TARGET_TYPE_LOGICAL_PORT,
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'scope': scope,
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'tag': tag}
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def create(self, display_name, description, tags,
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membership_criteria=None, members=None):
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body = {'display_name': display_name,
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'description': description,
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'tags': tags,
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'members': [] if members is None else members}
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if membership_criteria:
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# Allow caller to pass a list of membership criterias.
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# The 'else' block is maintained for backwards compatibility
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# where in a caller might only send a single membership criteria.
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if isinstance(membership_criteria, list):
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body.update({'membership_criteria': membership_criteria})
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else:
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body.update({'membership_criteria': [membership_criteria]})
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return self.client.create(self.get_path(), body)
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def list(self):
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return self.client.list(
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'%s?populate_references=false' % self.get_path()).get(
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'results', [])
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def update(self, nsgroup_id, display_name=None, description=None,
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membership_criteria=None, members=None, tags_update=None):
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nsgroup = {}
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if display_name is not None:
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nsgroup['display_name'] = display_name
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if description is not None:
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nsgroup['description'] = description
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if members is not None:
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nsgroup['members'] = members
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if membership_criteria is not None:
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if isinstance(membership_criteria, list):
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nsgroup['membership_criteria'] = membership_criteria
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else:
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nsgroup['membership_criteria'] = [membership_criteria]
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if tags_update is not None:
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nsgroup['tags_update'] = tags_update
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return self._update_resource(
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self.get_path(nsgroup_id), nsgroup,
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get_params='?populate_references=true',
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retry=True)
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def get_member_expression(self, target_type, target_id):
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return {
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'resource_type': consts.NSGROUP_SIMPLE_EXP,
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'target_property': 'id',
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'target_type': target_type,
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'op': consts.EQUALS,
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'value': target_id}
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def _update_with_members(self, nsgroup_id, members, action):
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members_update = '%s?action=%s' % (self.get_path(nsgroup_id), action)
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return self.client.create(members_update, members)
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def add_members(self, nsgroup_id, target_type, target_ids):
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members = []
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for target_id in target_ids:
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member_expr = self.get_member_expression(
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target_type, target_id)
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members.append(member_expr)
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members = {'members': members}
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try:
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return self._update_with_members(
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nsgroup_id, members, consts.NSGROUP_ADD_MEMBERS)
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except (exceptions.StaleRevision, exceptions.ResourceNotFound):
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raise
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except exceptions.ManagerError:
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# REVISIT(roeyc): A ManagerError might have been raised for a
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# different reason, e.g - NSGroup does not exists.
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LOG.warning("Failed to add %(target_type)s resources "
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"(%(target_ids)s) to NSGroup %(nsgroup_id)s",
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{'target_type': target_type,
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'target_ids': target_ids,
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'nsgroup_id': nsgroup_id})
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raise exceptions.NSGroupIsFull(nsgroup_id=nsgroup_id)
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def remove_member(self, nsgroup_id, target_type,
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target_id, verify=False):
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member_expr = self.get_member_expression(
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target_type, target_id)
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members = {'members': [member_expr]}
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try:
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return self._update_with_members(
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nsgroup_id, members, consts.NSGROUP_REMOVE_MEMBERS)
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except exceptions.ManagerError:
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if verify:
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raise exceptions.NSGroupMemberNotFound(member_id=target_id,
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nsgroup_id=nsgroup_id)
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def read(self, nsgroup_id):
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return self.client.get(
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'%s?populate_references=true' % self.get_path(nsgroup_id))
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def delete(self, nsgroup_id):
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resource = '%s?force=true' % nsgroup_id
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return self._delete_with_retry(resource)
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def find_by_display_name(self, display_name):
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found = []
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for resource in self.list():
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if resource['display_name'] == display_name:
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found.append(resource)
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return found
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class NsxLibFirewallSection(utils.NsxLibApiBase):
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@property
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def uri_segment(self):
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return 'firewall/sections'
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@property
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def resource_type(self):
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return 'FirewallSection'
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def add_member_to_fw_exclude_list(self, target_id, target_type):
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resource = 'firewall/excludelist?action=add_member'
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body = {"target_id": target_id,
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"target_type": target_type}
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self._create_with_retry(resource, body)
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def remove_member_from_fw_exclude_list(self, target_id, target_type):
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resource = ('firewall/excludelist?action=remove_member&object_id=' +
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target_id)
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self._create_with_retry(resource)
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def get_excludelist(self):
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return self.client.list('firewall/excludelist')
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def _get_direction(self, sg_rule):
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return (
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consts.IN if sg_rule['direction'] == 'ingress'
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else consts.OUT
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)
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def get_nsservice(self, resource_type, **properties):
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service = {'resource_type': resource_type}
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service.update(properties)
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return {'service': service}
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def _decide_service(self, sg_rule):
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l4_protocol = utils.get_l4_protocol_name(sg_rule['protocol'])
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if l4_protocol in [consts.TCP, consts.UDP]:
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# If port_range_min is not specified then we assume all ports are
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# matched, relying on neutron to perform validation.
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if sg_rule['port_range_min'] is None:
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destination_ports = []
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elif sg_rule['port_range_min'] != sg_rule['port_range_max']:
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# NSX API requires a non-empty range (e.g - '22-23')
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destination_ports = ['%(port_range_min)s-%(port_range_max)s'
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% sg_rule]
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else:
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destination_ports = ['%(port_range_min)s' % sg_rule]
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return self.get_nsservice(
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consts.L4_PORT_SET_NSSERVICE,
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l4_protocol=l4_protocol,
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source_ports=[],
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destination_ports=destination_ports)
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elif l4_protocol == consts.ICMPV4:
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# Validate the icmp type & code
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icmp_type = sg_rule['port_range_min']
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icmp_code = sg_rule['port_range_max']
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icmp_strict = self.nsxlib.feature_supported(
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consts.FEATURE_ICMP_STRICT)
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utils.validate_icmp_params(icmp_type, icmp_code, icmp_version=4,
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strict=icmp_strict)
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return self.get_nsservice(
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consts.ICMP_TYPE_NSSERVICE,
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protocol=l4_protocol,
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icmp_type=icmp_type,
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icmp_code=icmp_code)
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elif l4_protocol is not None:
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return self.get_nsservice(
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consts.IP_PROTOCOL_NSSERVICE,
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protocol_number=l4_protocol)
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def _build(self, display_name, description, applied_tos, tags):
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return {'display_name': display_name,
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'description': description,
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'stateful': True,
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'section_type': consts.FW_SECTION_LAYER3,
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'applied_tos': [self.get_nsgroup_reference(t_id)
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for t_id in applied_tos],
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'tags': tags}
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def create_empty(self, display_name, description,
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applied_tos, tags,
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operation=consts.FW_INSERT_BOTTOM,
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other_section=None):
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resource = '%s?operation=%s' % (self.uri_segment, operation)
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body = self._build(display_name, description,
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applied_tos, tags)
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if other_section:
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resource += '&id=%s' % other_section
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return self._create_with_retry(resource, body)
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def create_with_rules(self, display_name, description, applied_tos=None,
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tags=None, operation=consts.FW_INSERT_BOTTOM,
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other_section=None, rules=None):
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resource = '%s?operation=%s' % (self.uri_segment, operation)
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body = {
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'display_name': display_name,
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'description': description,
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'stateful': True,
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'section_type': consts.FW_SECTION_LAYER3,
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'applied_tos': applied_tos or [],
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'tags': tags or []
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}
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if rules is not None:
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resource += '&action=create_with_rules'
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body['rules'] = rules
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if other_section:
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resource += '&id=%s' % other_section
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return self._create_with_retry(resource, body)
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def update(self, section_id, display_name=None, description=None,
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applied_tos=None, rules=None, tags_update=None, force=False):
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resource = self.get_path(section_id)
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params = None
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section = {}
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if rules is not None:
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params = '?action=update_with_rules'
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section['rules'] = rules
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if display_name is not None:
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section['display_name'] = display_name
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if description is not None:
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section['description'] = description
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if applied_tos is not None:
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section['applied_tos'] = [self.get_nsgroup_reference(nsg_id)
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for nsg_id in applied_tos]
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if tags_update is not None:
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section['tags_update'] = tags_update
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headers = None
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if force:
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# shared sections (like default section) can serve multiple
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# openstack deployments. If some operate under protected
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# identities, force-overwrite is needed.
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# REVISIT(annak): find better solution for shared sections
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headers = {'X-Allow-Overwrite': 'true'}
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if rules is not None:
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return self._update_resource(resource, section,
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headers=headers,
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create_action=True,
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action_params=params,
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retry=True)
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elif any(p is not None for p in (display_name, description,
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applied_tos, tags_update)):
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return self._update_resource(resource, section,
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headers=headers,
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action_params=params,
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retry=True)
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def list(self):
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return self.client.list(self.get_path()).get('results', [])
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def delete(self, section_id):
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resource = '%s?cascade=true' % section_id
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return self._delete_with_retry(resource)
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def get_nsgroup_reference(self, nsgroup_id):
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return {'target_id': nsgroup_id,
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'target_type': consts.NSGROUP}
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def get_logicalport_reference(self, port_id):
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return {'target_id': port_id,
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'target_type': consts.TARGET_TYPE_LOGICAL_PORT}
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def get_ip_cidr_reference(self, ip_cidr_block, ip_protocol):
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target_type = (consts.TARGET_TYPE_IPV4ADDRESS
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if ip_protocol == consts.IPV4
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else consts.TARGET_TYPE_IPV6ADDRESS)
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return {'target_id': ip_cidr_block,
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'target_type': target_type}
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def get_rule_address(self, target_id, display_name=None, is_valid=True,
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target_type=consts.TARGET_TYPE_IPV4ADDRESS):
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return {'target_display_name': display_name or '',
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'target_id': target_id,
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'is_valid': is_valid,
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'target_type': target_type}
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def get_l4portset_nsservice(self, sources=None, destinations=None,
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protocol=consts.TCP):
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return {
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'service': {
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'resource_type': 'L4PortSetNSService',
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'source_ports': sources or [],
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'destination_ports': destinations or [],
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'l4_protocol': protocol}
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}
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def get_rule_dict(self, display_name, sources=None, destinations=None,
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direction=consts.IN_OUT, ip_protocol=consts.IPV4_IPV6,
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services=None, action=consts.FW_ACTION_ALLOW,
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logged=False, disabled=False, applied_tos=None,
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rule_tag=None):
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rule_dict = {'display_name': display_name,
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'direction': direction,
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'ip_protocol': ip_protocol,
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'action': action,
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'logged': logged,
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'disabled': disabled,
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'sources': sources or [],
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'destinations': destinations or [],
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'services': services or []}
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if applied_tos is not None:
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rule_dict['applied_tos'] = applied_tos
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if rule_tag is not None:
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rule_dict['rule_tag'] = rule_tag
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return rule_dict
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def add_rule(self, rule, section_id, operation=consts.FW_INSERT_BOTTOM):
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@utils.retry_upon_exception(exceptions.StaleRevision,
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max_attempts=self.client.max_attempts)
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def _do_add_rule():
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resource = '%s/rules' % self.get_path(section_id)
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params = '?operation=%s' % operation
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if (version.LooseVersion(self.nsxlib.get_version()) >=
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version.LooseVersion(consts.NSX_VERSION_2_4_0)):
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rule['_revision'] = self.get(section_id)['_revision']
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return self.client.create(resource + params, rule)
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return _do_add_rule()
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def add_rules(self, rules, section_id, operation=consts.FW_INSERT_BOTTOM):
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@utils.retry_upon_exception(exceptions.StaleRevision,
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max_attempts=self.client.max_attempts)
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def _do_add_rules():
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resource = '%s/rules' % self.get_path(section_id)
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params = '?action=create_multiple&operation=%s' % operation
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if (version.LooseVersion(self.nsxlib.get_version()) >=
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version.LooseVersion(consts.NSX_VERSION_2_4_0)):
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rev_id = self.get(section_id)['_revision']
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for rule in rules:
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rule['_revision'] = rev_id
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return self.client.create(resource + params, {'rules': rules})
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return _do_add_rules()
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def delete_rule(self, section_id, rule_id):
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resource = '%s/rules/%s' % (section_id, rule_id)
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return self._delete_with_retry(resource)
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def get_rules(self, section_id):
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resource = '%s/rules' % self.get_path(section_id)
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return self.client.get(resource)
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def get_default_rule(self, section_id):
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rules = self.get_rules(section_id)['results']
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last_rule = rules[-1]
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if last_rule['is_default']:
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return last_rule
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def _get_fw_rule_from_sg_rule(self, sg_rule, nsgroup_id, rmt_nsgroup_id,
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logged, action):
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# IPV4 or IPV6
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ip_protocol = sg_rule['ethertype'].upper()
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direction = self._get_direction(sg_rule)
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if sg_rule.get(consts.LOCAL_IP_PREFIX):
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|
local_ip_prefix = self.get_ip_cidr_reference(
|
|
sg_rule[consts.LOCAL_IP_PREFIX],
|
|
ip_protocol)
|
|
else:
|
|
local_ip_prefix = None
|
|
|
|
source = None
|
|
local_group = self.get_nsgroup_reference(nsgroup_id)
|
|
if sg_rule['remote_ip_prefix'] is not None:
|
|
source = self.get_ip_cidr_reference(
|
|
sg_rule['remote_ip_prefix'], ip_protocol)
|
|
destination = local_ip_prefix or local_group
|
|
else:
|
|
if rmt_nsgroup_id:
|
|
source = self.get_nsgroup_reference(rmt_nsgroup_id)
|
|
destination = local_ip_prefix or local_group
|
|
if direction == consts.OUT:
|
|
source, destination = destination, source
|
|
|
|
service = self._decide_service(sg_rule)
|
|
name = sg_rule['id']
|
|
|
|
return self.get_rule_dict(name, [source] if source else None,
|
|
[destination] if destination else None,
|
|
direction,
|
|
ip_protocol,
|
|
[service] if service else None,
|
|
action, logged)
|
|
|
|
def create_section_rules(self, section_id, nsgroup_id,
|
|
logging_enabled, action, security_group_rules,
|
|
ruleid_2_remote_nsgroup_map):
|
|
# 1. translate rules
|
|
# 2. insert in section
|
|
# 3. return the rules
|
|
firewall_rules = []
|
|
for sg_rule in security_group_rules:
|
|
remote_nsgroup_id = ruleid_2_remote_nsgroup_map[sg_rule['id']]
|
|
fw_rule = self._get_fw_rule_from_sg_rule(
|
|
sg_rule, nsgroup_id, remote_nsgroup_id,
|
|
logging_enabled, action)
|
|
|
|
firewall_rules.append(fw_rule)
|
|
return self.add_rules(firewall_rules, section_id)
|
|
|
|
def set_rule_logging(self, section_id, logging):
|
|
rules = self._process_rules_logging_for_update(
|
|
section_id, logging)
|
|
self.update(section_id, rules=rules)
|
|
|
|
def _process_rules_logging_for_update(self, section_id, logging_enabled):
|
|
rules = self.get_rules(section_id).get('results', [])
|
|
update_rules = False
|
|
for rule in rules:
|
|
if rule['logged'] != logging_enabled:
|
|
rule['logged'] = logging_enabled
|
|
update_rules = True
|
|
return rules if update_rules else None
|
|
|
|
def init_default(self, name, description, nested_groups,
|
|
log_sg_blocked_traffic):
|
|
LOG.info("Initializing the default section named %s", name)
|
|
fw_sections = self.list()
|
|
for section in reversed(fw_sections):
|
|
if section['display_name'] == name:
|
|
LOG.info("Found existing default section %s", section['id'])
|
|
break
|
|
else:
|
|
tags = self.build_v3_api_version_tag()
|
|
section = self.create_empty(
|
|
name, description, nested_groups, tags)
|
|
LOG.info("Creating a new default section %s", section['id'])
|
|
|
|
block_rule = self.get_rule_dict(
|
|
'Block All', action=consts.FW_ACTION_DROP,
|
|
logged=log_sg_blocked_traffic)
|
|
# TODO(roeyc): Add additional rules to allow IPV6 NDP.
|
|
dhcp_client = self.get_nsservice(
|
|
consts.L4_PORT_SET_NSSERVICE,
|
|
l4_protocol=consts.UDP,
|
|
source_ports=[67],
|
|
destination_ports=[68])
|
|
dhcp_client_rule_in = self.get_rule_dict(
|
|
'DHCP Reply', direction=consts.IN,
|
|
services=[dhcp_client])
|
|
|
|
dhcp_server = (
|
|
self.get_nsservice(
|
|
consts.L4_PORT_SET_NSSERVICE,
|
|
l4_protocol=consts.UDP,
|
|
source_ports=[68],
|
|
destination_ports=[67]))
|
|
dhcp_client_rule_out = self.get_rule_dict(
|
|
'DHCP Request', direction=consts.OUT,
|
|
services=[dhcp_server])
|
|
|
|
self.update(section['id'],
|
|
name, section['description'],
|
|
applied_tos=nested_groups,
|
|
rules=[dhcp_client_rule_out,
|
|
dhcp_client_rule_in,
|
|
block_rule],
|
|
force=True)
|
|
return section['id']
|
|
|
|
|
|
class NsxLibIPSet(utils.NsxLibApiBase):
|
|
|
|
@property
|
|
def uri_segment(self):
|
|
return 'ip-sets'
|
|
|
|
@property
|
|
def resource_type(self):
|
|
return 'IPSet'
|
|
|
|
def create(self, display_name, description=None, ip_addresses=None,
|
|
tags=None):
|
|
body = {
|
|
'display_name': display_name,
|
|
'description': description or '',
|
|
'ip_addresses': ip_addresses or [],
|
|
'tags': tags or []
|
|
}
|
|
return self.client.create(self.get_path(), body)
|
|
|
|
def update(self, ip_set_id, display_name=None, description=None,
|
|
ip_addresses=None, tags_update=None, update_payload_cbk=None):
|
|
# The update_payload_cbk function takes two arguments.
|
|
# The first one is the result from the internal GET request.
|
|
# The second one is a dict of user-provided attributes,
|
|
# which can be changed inside the callback function and
|
|
# used as the new payload for the following PUT request.
|
|
# For example, users want to combine the new ip_addresses
|
|
# passed to update() with the original ip_addresses retrieved
|
|
# from the internal GET request instead of overriding the
|
|
# original ip_addresses.
|
|
ip_set = {}
|
|
if tags_update:
|
|
ip_set['tags_update'] = tags_update
|
|
if display_name is not None:
|
|
ip_set['display_name'] = display_name
|
|
if description is not None:
|
|
ip_set['description'] = description
|
|
if ip_addresses is not None:
|
|
ip_set['ip_addresses'] = ip_addresses
|
|
return self._update_resource(self.get_path(ip_set_id),
|
|
ip_set, retry=True,
|
|
update_payload_cbk=update_payload_cbk)
|
|
|
|
def read(self, ip_set_id):
|
|
return self.client.get('ip-sets/%s' % ip_set_id)
|
|
|
|
def delete(self, ip_set_id):
|
|
self._delete_with_retry(ip_set_id)
|
|
|
|
def get_ipset_reference(self, ip_set_id):
|
|
return {'target_id': ip_set_id,
|
|
'target_type': consts.IP_SET}
|