355 lines
15 KiB
Python
355 lines
15 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2013 VMware, Inc
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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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# @author: Leon Cui, VMware
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from neutron.db import db_base_plugin_v2
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from neutron.openstack.common import excutils
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from neutron.openstack.common import log as logging
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from neutron.plugins.common import constants
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from neutron.plugins.vmware.dbexts import vcns_db
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from neutron.plugins.vmware.vshield.common import (
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exceptions as vcns_exc)
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LOG = logging.getLogger(__name__)
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VSE_FWAAS_ALLOW = "accept"
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VSE_FWAAS_DENY = "deny"
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class EdgeFirewallDriver(db_base_plugin_v2.NeutronDbPluginV2):
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"""Implementation of driver APIs for
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Edge Firewall feature configuration
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"""
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def _convert_firewall_action(self, action):
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if action == constants.FWAAS_ALLOW:
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return VSE_FWAAS_ALLOW
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elif action == constants.FWAAS_DENY:
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return VSE_FWAAS_DENY
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else:
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msg = _("Invalid action value %s in a firewall rule") % action
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raise vcns_exc.VcnsBadRequest(resource='firewall_rule', msg=msg)
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def _restore_firewall_action(self, action):
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if action == VSE_FWAAS_ALLOW:
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return constants.FWAAS_ALLOW
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elif action == VSE_FWAAS_DENY:
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return constants.FWAAS_DENY
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else:
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msg = (_("Invalid action value %s in "
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"a vshield firewall rule") % action)
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raise vcns_exc.VcnsBadRequest(resource='firewall_rule', msg=msg)
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def _get_port_range_from_min_max_ports(self, min_port, max_port):
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if not min_port:
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return None
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if min_port == max_port:
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return str(min_port)
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else:
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return '%d:%d' % (min_port, max_port)
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def _get_min_max_ports_from_range(self, port_range):
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if not port_range:
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return [None, None]
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min_port, sep, max_port = port_range.partition(":")
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if not max_port:
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max_port = min_port
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return [int(min_port), int(max_port)]
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def _convert_firewall_rule(self, context, rule, index=None):
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vcns_rule = {
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"name": rule['name'],
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"description": rule['description'],
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"action": self._convert_firewall_action(rule['action']),
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"enabled": rule['enabled']}
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if rule.get('source_ip_address'):
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vcns_rule['source'] = {
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"ipAddress": [rule['source_ip_address']]
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}
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if rule.get('destination_ip_address'):
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vcns_rule['destination'] = {
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"ipAddress": [rule['destination_ip_address']]
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}
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service = {}
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if rule.get('source_port'):
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min_port, max_port = self._get_min_max_ports_from_range(
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rule['source_port'])
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service['sourcePort'] = [i for i in range(min_port, max_port + 1)]
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if rule.get('destination_port'):
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min_port, max_port = self._get_min_max_ports_from_range(
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rule['destination_port'])
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service['port'] = [i for i in range(min_port, max_port + 1)]
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if rule.get('protocol'):
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service['protocol'] = rule['protocol']
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if service:
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vcns_rule['application'] = {
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'service': [service]
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}
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if index:
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vcns_rule['ruleTag'] = index
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return vcns_rule
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def _restore_firewall_rule(self, context, edge_id, response):
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rule = response
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rule_binding = vcns_db.get_vcns_edge_firewallrule_binding_by_vseid(
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context.session, edge_id, rule['ruleId'])
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service = rule['application']['service'][0]
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src_port_range = self._get_port_range_from_min_max_ports(
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service['sourcePort'][0], service['sourcePort'][-1])
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dst_port_range = self._get_port_range_from_min_max_ports(
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service['port'][0], service['port'][-1])
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return {
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'firewall_rule': {
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'name': rule['name'],
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'id': rule_binding['rule_id'],
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'description': rule['description'],
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'source_ip_address': rule['source']['ipAddress'][0],
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'destination_ip_address': rule['destination']['ipAddress'][0],
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'protocol': service['protocol'],
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'destination_port': dst_port_range,
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'source_port': src_port_range,
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'action': self._restore_firewall_action(rule['action']),
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'enabled': rule['enabled']}}
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def _convert_firewall(self, context, firewall):
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#bulk configuration on firewall and rescheduling the rule binding
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ruleTag = 1
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vcns_rules = []
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for rule in firewall['firewall_rule_list']:
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vcns_rule = self._convert_firewall_rule(context, rule, ruleTag)
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vcns_rules.append(vcns_rule)
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ruleTag += 1
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return {
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'featureType': "firewall_4.0",
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'firewallRules': {
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'firewallRules': vcns_rules}}
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def _restore_firewall(self, context, edge_id, response):
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res = {}
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res['firewall_rule_list'] = []
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for rule in response['firewallRules']['firewallRules']:
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rule_binding = (
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vcns_db.get_vcns_edge_firewallrule_binding_by_vseid(
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context.session, edge_id, rule['ruleId']))
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if rule_binding is None:
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continue
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service = rule['application']['service'][0]
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src_port_range = self._get_port_range_from_min_max_ports(
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service['sourcePort'][0], service['sourcePort'][-1])
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dst_port_range = self._get_port_range_from_min_max_ports(
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service['port'][0], service['port'][-1])
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item = {
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'firewall_rule': {
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'name': rule['name'],
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'id': rule_binding['rule_id'],
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'description': rule['description'],
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'source_ip_address': rule['source']['ipAddress'][0],
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'destination_ip_address': rule[
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'destination']['ipAddress'][0],
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'protocol': service['protocol'],
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'destination_port': dst_port_range,
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'source_port': src_port_range,
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'action': self._restore_firewall_action(rule['action']),
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'enabled': rule['enabled']}}
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res['firewall_rule_list'].append(item)
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return res
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def _create_rule_id_mapping(
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self, context, edge_id, firewall, vcns_fw):
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for rule in vcns_fw['firewallRules']['firewallRules']:
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index = rule['ruleTag'] - 1
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#TODO(linb):a simple filter of the retrived rules which may be
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#created by other operations unintentionally
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if index < len(firewall['firewall_rule_list']):
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rule_vseid = rule['ruleId']
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rule_id = firewall['firewall_rule_list'][index]['id']
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map_info = {
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'rule_id': rule_id,
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'rule_vseid': rule_vseid,
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'edge_id': edge_id
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}
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vcns_db.add_vcns_edge_firewallrule_binding(
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context.session, map_info)
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def _get_firewall(self, context, edge_id):
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try:
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return self.vcns.get_firewall(edge_id)[1]
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except vcns_exc.VcnsApiException as e:
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LOG.exception(_("Failed to get firewall with edge "
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"id: %s"), edge_id)
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raise e
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def _get_firewall_rule_next(self, context, edge_id, rule_vseid):
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# Return the firewall rule below 'rule_vseid'
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fw_cfg = self._get_firewall(context, edge_id)
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for i in range(len(fw_cfg['firewallRules']['firewallRules'])):
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rule_cur = fw_cfg['firewallRules']['firewallRules'][i]
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if str(rule_cur['ruleId']) == rule_vseid:
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if (i + 1) == len(fw_cfg['firewallRules']['firewallRules']):
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return None
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else:
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return fw_cfg['firewallRules']['firewallRules'][i + 1]
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def get_firewall_rule(self, context, id, edge_id):
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rule_map = vcns_db.get_vcns_edge_firewallrule_binding(
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context.session, id, edge_id)
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if rule_map is None:
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msg = _("No rule id:%s found in the edge_firewall_binding") % id
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LOG.error(msg)
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raise vcns_exc.VcnsNotFound(
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resource='vcns_firewall_rule_bindings', msg=msg)
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vcns_rule_id = rule_map.rule_vseid
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try:
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response = self.vcns.get_firewall_rule(
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edge_id, vcns_rule_id)[1]
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except vcns_exc.VcnsApiException as e:
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LOG.exception(_("Failed to get firewall rule: %(rule_id)s "
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"with edge_id: %(edge_id)s"), {
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'rule_id': id,
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'edge_id': edge_id})
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raise e
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return self._restore_firewall_rule(context, edge_id, response)
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def get_firewall(self, context, edge_id):
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response = self._get_firewall(context, edge_id)
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return self._restore_firewall(context, edge_id, response)
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def update_firewall(self, context, edge_id, firewall):
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fw_req = self._convert_firewall(context, firewall)
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try:
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self.vcns.update_firewall(edge_id, fw_req)
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except vcns_exc.VcnsApiException as e:
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LOG.exception(_("Failed to update firewall "
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"with edge_id: %s"), edge_id)
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raise e
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fw_res = self._get_firewall(context, edge_id)
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vcns_db.cleanup_vcns_edge_firewallrule_binding(
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context.session, edge_id)
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self._create_rule_id_mapping(context, edge_id, firewall, fw_res)
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def delete_firewall(self, context, edge_id):
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try:
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self.vcns.delete_firewall(edge_id)
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except vcns_exc.VcnsApiException as e:
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LOG.exception(_("Failed to delete firewall "
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"with edge_id:%s"), edge_id)
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raise e
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vcns_db.cleanup_vcns_edge_firewallrule_binding(
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context.session, edge_id)
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def update_firewall_rule(self, context, id, edge_id, firewall_rule):
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rule_map = vcns_db.get_vcns_edge_firewallrule_binding(
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context.session, id, edge_id)
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vcns_rule_id = rule_map.rule_vseid
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fwr_req = self._convert_firewall_rule(context, firewall_rule)
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try:
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self.vcns.update_firewall_rule(edge_id, vcns_rule_id, fwr_req)
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except vcns_exc.VcnsApiException:
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with excutils.save_and_reraise_exception():
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LOG.exception(_("Failed to update firewall rule: %(rule_id)s "
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"with edge_id: %(edge_id)s"),
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{'rule_id': id,
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'edge_id': edge_id})
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def delete_firewall_rule(self, context, id, edge_id):
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rule_map = vcns_db.get_vcns_edge_firewallrule_binding(
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context.session, id, edge_id)
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vcns_rule_id = rule_map.rule_vseid
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try:
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self.vcns.delete_firewall_rule(edge_id, vcns_rule_id)
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except vcns_exc.VcnsApiException:
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with excutils.save_and_reraise_exception():
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LOG.exception(_("Failed to delete firewall rule: %(rule_id)s "
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"with edge_id: %(edge_id)s"),
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{'rule_id': id,
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'edge_id': edge_id})
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vcns_db.delete_vcns_edge_firewallrule_binding(
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context.session, id)
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def _add_rule_above(self, context, ref_rule_id, edge_id, firewall_rule):
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rule_map = vcns_db.get_vcns_edge_firewallrule_binding(
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context.session, ref_rule_id, edge_id)
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ref_vcns_rule_id = rule_map.rule_vseid
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fwr_req = self._convert_firewall_rule(context, firewall_rule)
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try:
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header = self.vcns.add_firewall_rule_above(
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edge_id, ref_vcns_rule_id, fwr_req)[0]
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except vcns_exc.VcnsApiException:
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with excutils.save_and_reraise_exception():
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LOG.exception(_("Failed to add firewall rule above: "
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"%(rule_id)s with edge_id: %(edge_id)s"),
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{'rule_id': ref_vcns_rule_id,
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'edge_id': edge_id})
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objuri = header['location']
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fwr_vseid = objuri[objuri.rfind("/") + 1:]
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map_info = {
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'rule_id': firewall_rule['id'],
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'rule_vseid': fwr_vseid,
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'edge_id': edge_id}
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vcns_db.add_vcns_edge_firewallrule_binding(
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context.session, map_info)
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def _add_rule_below(self, context, ref_rule_id, edge_id, firewall_rule):
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rule_map = vcns_db.get_vcns_edge_firewallrule_binding(
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context.session, ref_rule_id, edge_id)
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ref_vcns_rule_id = rule_map.rule_vseid
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fwr_vse_next = self._get_firewall_rule_next(
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context, edge_id, ref_vcns_rule_id)
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fwr_req = self._convert_firewall_rule(context, firewall_rule)
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if fwr_vse_next:
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ref_vcns_rule_id = fwr_vse_next['ruleId']
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try:
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header = self.vcns.add_firewall_rule_above(
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edge_id, int(ref_vcns_rule_id), fwr_req)[0]
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except vcns_exc.VcnsApiException:
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with excutils.save_and_reraise_exception():
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LOG.exception(_("Failed to add firewall rule above: "
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"%(rule_id)s with edge_id: %(edge_id)s"),
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{'rule_id': ref_vcns_rule_id,
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'edge_id': edge_id})
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else:
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# append the rule at the bottom
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try:
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header = self.vcns.add_firewall_rule(
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edge_id, fwr_req)[0]
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except vcns_exc.VcnsApiException:
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with excutils.save_and_reraise_exception():
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LOG.exception(_("Failed to append a firewall rule"
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"with edge_id: %s"), edge_id)
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objuri = header['location']
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fwr_vseid = objuri[objuri.rfind("/") + 1:]
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map_info = {
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'rule_id': firewall_rule['id'],
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'rule_vseid': fwr_vseid,
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'edge_id': edge_id
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}
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vcns_db.add_vcns_edge_firewallrule_binding(
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context.session, map_info)
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def insert_rule(self, context, rule_info, edge_id, fwr):
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if rule_info.get('insert_before'):
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self._add_rule_above(
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context, rule_info['insert_before'], edge_id, fwr)
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elif rule_info.get('insert_after'):
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self._add_rule_below(
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context, rule_info['insert_after'], edge_id, fwr)
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else:
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msg = _("Can't execute insert rule operation "
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"without reference rule_id")
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raise vcns_exc.VcnsBadRequest(resource='firewall_rule', msg=msg)
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