a07bbac1c4
Partial-Bug 1219991 This change modifies the hook processing for dict_extend routines to call the method on the instance if a hook is registered as a string. Otherwise, the callable hook is directly invoked as an unbound method. This patch fixes hook registration for all extensions except port_binding. This is because some plugins are currently working around this limitation by invoking both the global hook and another dict_extend function, which might either be registered as another hook, or invoked explicitly before returning the response. Fixing this would go beyong the scope of this patch. Change-Id: Ibe78433e6554aa7fdf5156fc75b8339254876e78
529 lines
24 KiB
Python
529 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2012 Nicira Networks, Inc. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
#
|
|
# @author: Aaron Rosen, Nicira, Inc
|
|
|
|
import sqlalchemy as sa
|
|
from sqlalchemy import orm
|
|
from sqlalchemy.orm import exc
|
|
from sqlalchemy.orm import scoped_session
|
|
|
|
from neutron.api.v2 import attributes as attr
|
|
from neutron.common import constants
|
|
from neutron.db import db_base_plugin_v2
|
|
from neutron.db import model_base
|
|
from neutron.db import models_v2
|
|
from neutron.extensions import securitygroup as ext_sg
|
|
from neutron.openstack.common import uuidutils
|
|
|
|
|
|
IP_PROTOCOL_MAP = {'tcp': constants.TCP_PROTOCOL,
|
|
'udp': constants.UDP_PROTOCOL,
|
|
'icmp': constants.ICMP_PROTOCOL,
|
|
'icmpv6': constants.ICMPv6_PROTOCOL}
|
|
|
|
|
|
class SecurityGroup(model_base.BASEV2, models_v2.HasId, models_v2.HasTenant):
|
|
"""Represents a v2 neutron security group."""
|
|
|
|
name = sa.Column(sa.String(255))
|
|
description = sa.Column(sa.String(255))
|
|
|
|
|
|
class SecurityGroupPortBinding(model_base.BASEV2):
|
|
"""Represents binding between neutron ports and security profiles."""
|
|
|
|
port_id = sa.Column(sa.String(36),
|
|
sa.ForeignKey("ports.id",
|
|
ondelete='CASCADE'),
|
|
primary_key=True)
|
|
security_group_id = sa.Column(sa.String(36),
|
|
sa.ForeignKey("securitygroups.id"),
|
|
primary_key=True)
|
|
|
|
# Add a relationship to the Port model in order to instruct SQLAlchemy to
|
|
# eagerly load security group bindings
|
|
ports = orm.relationship(
|
|
models_v2.Port,
|
|
backref=orm.backref("security_groups",
|
|
lazy='joined', cascade='delete'))
|
|
|
|
|
|
class SecurityGroupRule(model_base.BASEV2, models_v2.HasId,
|
|
models_v2.HasTenant):
|
|
"""Represents a v2 neutron security group rule."""
|
|
|
|
security_group_id = sa.Column(sa.String(36),
|
|
sa.ForeignKey("securitygroups.id",
|
|
ondelete="CASCADE"),
|
|
nullable=False)
|
|
|
|
remote_group_id = sa.Column(sa.String(36),
|
|
sa.ForeignKey("securitygroups.id",
|
|
ondelete="CASCADE"),
|
|
nullable=True)
|
|
|
|
direction = sa.Column(sa.Enum('ingress', 'egress',
|
|
name='securitygrouprules_direction'))
|
|
ethertype = sa.Column(sa.String(40))
|
|
protocol = sa.Column(sa.String(40))
|
|
port_range_min = sa.Column(sa.Integer)
|
|
port_range_max = sa.Column(sa.Integer)
|
|
remote_ip_prefix = sa.Column(sa.String(255))
|
|
security_group = orm.relationship(
|
|
SecurityGroup,
|
|
backref=orm.backref('rules', cascade='all,delete'),
|
|
primaryjoin="SecurityGroup.id==SecurityGroupRule.security_group_id")
|
|
source_group = orm.relationship(
|
|
SecurityGroup,
|
|
backref=orm.backref('source_rules', cascade='all,delete'),
|
|
primaryjoin="SecurityGroup.id==SecurityGroupRule.remote_group_id")
|
|
|
|
|
|
class SecurityGroupDbMixin(ext_sg.SecurityGroupPluginBase):
|
|
"""Mixin class to add security group to db_plugin_base_v2."""
|
|
|
|
__native_bulk_support = True
|
|
|
|
def create_security_group_bulk(self, context, security_group_rule):
|
|
return self._create_bulk('security_group', context,
|
|
security_group_rule)
|
|
|
|
def create_security_group(self, context, security_group, default_sg=False):
|
|
"""Create security group.
|
|
|
|
If default_sg is true that means we are a default security group for
|
|
a given tenant if it does not exist.
|
|
"""
|
|
s = security_group['security_group']
|
|
tenant_id = self._get_tenant_id_for_create(context, s)
|
|
|
|
if not default_sg:
|
|
self._ensure_default_security_group(context, tenant_id)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
security_group_db = SecurityGroup(id=s.get('id') or (
|
|
uuidutils.generate_uuid()),
|
|
description=s['description'],
|
|
tenant_id=tenant_id,
|
|
name=s['name'])
|
|
context.session.add(security_group_db)
|
|
for ethertype in ext_sg.sg_supported_ethertypes:
|
|
if s.get('name') == 'default':
|
|
# Allow intercommunication
|
|
ingress_rule = SecurityGroupRule(
|
|
id=uuidutils.generate_uuid(), tenant_id=tenant_id,
|
|
security_group=security_group_db,
|
|
direction='ingress',
|
|
ethertype=ethertype,
|
|
source_group=security_group_db)
|
|
context.session.add(ingress_rule)
|
|
|
|
egress_rule = SecurityGroupRule(
|
|
id=uuidutils.generate_uuid(), tenant_id=tenant_id,
|
|
security_group=security_group_db,
|
|
direction='egress',
|
|
ethertype=ethertype)
|
|
context.session.add(egress_rule)
|
|
|
|
return self._make_security_group_dict(security_group_db)
|
|
|
|
def get_security_groups(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None,
|
|
marker=None, page_reverse=False, default_sg=False):
|
|
|
|
# If default_sg is True do not call _ensure_default_security_group()
|
|
# so this can be done recursively. Context.tenant_id is checked
|
|
# because all the unit tests do not explicitly set the context on
|
|
# GETS. TODO(arosen) context handling can probably be improved here.
|
|
if not default_sg and context.tenant_id:
|
|
self._ensure_default_security_group(context, context.tenant_id)
|
|
marker_obj = self._get_marker_obj(context, 'security_group', limit,
|
|
marker)
|
|
return self._get_collection(context,
|
|
SecurityGroup,
|
|
self._make_security_group_dict,
|
|
filters=filters, fields=fields,
|
|
sorts=sorts,
|
|
limit=limit, marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
|
|
def get_security_groups_count(self, context, filters=None):
|
|
return self._get_collection_count(context, SecurityGroup,
|
|
filters=filters)
|
|
|
|
def get_security_group(self, context, id, fields=None, tenant_id=None):
|
|
"""Tenant id is given to handle the case when creating a security
|
|
group rule on behalf of another use.
|
|
"""
|
|
|
|
if tenant_id:
|
|
tmp_context_tenant_id = context.tenant_id
|
|
context.tenant_id = tenant_id
|
|
|
|
try:
|
|
with context.session.begin(subtransactions=True):
|
|
ret = self._make_security_group_dict(self._get_security_group(
|
|
context, id), fields)
|
|
ret['security_group_rules'] = self.get_security_group_rules(
|
|
context, {'security_group_id': [id]})
|
|
finally:
|
|
if tenant_id:
|
|
context.tenant_id = tmp_context_tenant_id
|
|
return ret
|
|
|
|
def _get_security_group(self, context, id):
|
|
try:
|
|
query = self._model_query(context, SecurityGroup)
|
|
sg = query.filter(SecurityGroup.id == id).one()
|
|
|
|
except exc.NoResultFound:
|
|
raise ext_sg.SecurityGroupNotFound(id=id)
|
|
return sg
|
|
|
|
def delete_security_group(self, context, id):
|
|
filters = {'security_group_id': [id]}
|
|
ports = self._get_port_security_group_bindings(context, filters)
|
|
if ports:
|
|
raise ext_sg.SecurityGroupInUse(id=id)
|
|
# confirm security group exists
|
|
sg = self._get_security_group(context, id)
|
|
|
|
if sg['name'] == 'default' and not context.is_admin:
|
|
raise ext_sg.SecurityGroupCannotRemoveDefault()
|
|
with context.session.begin(subtransactions=True):
|
|
context.session.delete(sg)
|
|
|
|
def update_security_group(self, context, id, security_group):
|
|
s = security_group['security_group']
|
|
with context.session.begin(subtransactions=True):
|
|
sg = self._get_security_group(context, id)
|
|
if sg['name'] == 'default' and 'name' in s:
|
|
raise ext_sg.SecurityGroupCannotUpdateDefault()
|
|
sg.update(s)
|
|
return self._make_security_group_dict(sg)
|
|
|
|
def _make_security_group_dict(self, security_group, fields=None):
|
|
res = {'id': security_group['id'],
|
|
'name': security_group['name'],
|
|
'tenant_id': security_group['tenant_id'],
|
|
'description': security_group['description']}
|
|
res['security_group_rules'] = [self._make_security_group_rule_dict(r)
|
|
for r in security_group.rules]
|
|
return self._fields(res, fields)
|
|
|
|
def _make_security_group_binding_dict(self, security_group, fields=None):
|
|
res = {'port_id': security_group['port_id'],
|
|
'security_group_id': security_group['security_group_id']}
|
|
return self._fields(res, fields)
|
|
|
|
def _create_port_security_group_binding(self, context, port_id,
|
|
security_group_id):
|
|
with context.session.begin(subtransactions=True):
|
|
db = SecurityGroupPortBinding(port_id=port_id,
|
|
security_group_id=security_group_id)
|
|
context.session.add(db)
|
|
|
|
def _get_port_security_group_bindings(self, context,
|
|
filters=None, fields=None):
|
|
return self._get_collection(context,
|
|
SecurityGroupPortBinding,
|
|
self._make_security_group_binding_dict,
|
|
filters=filters, fields=fields)
|
|
|
|
def _delete_port_security_group_bindings(self, context, port_id):
|
|
query = self._model_query(context, SecurityGroupPortBinding)
|
|
bindings = query.filter(
|
|
SecurityGroupPortBinding.port_id == port_id)
|
|
with context.session.begin(subtransactions=True):
|
|
for binding in bindings:
|
|
context.session.delete(binding)
|
|
|
|
def create_security_group_rule_bulk(self, context, security_group_rule):
|
|
return self._create_bulk('security_group_rule', context,
|
|
security_group_rule)
|
|
|
|
def create_security_group_rule_bulk_native(self, context,
|
|
security_group_rule):
|
|
r = security_group_rule['security_group_rules']
|
|
|
|
scoped_session(context.session)
|
|
security_group_id = self._validate_security_group_rules(
|
|
context, security_group_rule)
|
|
with context.session.begin(subtransactions=True):
|
|
if not self.get_security_group(context, security_group_id):
|
|
raise ext_sg.SecurityGroupNotFound(id=security_group_id)
|
|
|
|
self._check_for_duplicate_rules(context, r)
|
|
ret = []
|
|
for rule_dict in r:
|
|
rule = rule_dict['security_group_rule']
|
|
tenant_id = self._get_tenant_id_for_create(context, rule)
|
|
db = SecurityGroupRule(
|
|
id=uuidutils.generate_uuid(), tenant_id=tenant_id,
|
|
security_group_id=rule['security_group_id'],
|
|
direction=rule['direction'],
|
|
remote_group_id=rule.get('remote_group_id'),
|
|
ethertype=rule['ethertype'],
|
|
protocol=rule['protocol'],
|
|
port_range_min=rule['port_range_min'],
|
|
port_range_max=rule['port_range_max'],
|
|
remote_ip_prefix=rule.get('remote_ip_prefix'))
|
|
context.session.add(db)
|
|
ret.append(self._make_security_group_rule_dict(db))
|
|
return ret
|
|
|
|
def create_security_group_rule(self, context, security_group_rule):
|
|
bulk_rule = {'security_group_rules': [security_group_rule]}
|
|
return self.create_security_group_rule_bulk_native(context,
|
|
bulk_rule)[0]
|
|
|
|
def _get_ip_proto_number(self, protocol):
|
|
if protocol is None:
|
|
return
|
|
return IP_PROTOCOL_MAP.get(protocol, protocol)
|
|
|
|
def _validate_port_range(self, rule):
|
|
"""Check that port_range is valid."""
|
|
if (rule['port_range_min'] is None and
|
|
rule['port_range_max'] is None):
|
|
return
|
|
if not rule['protocol']:
|
|
raise ext_sg.SecurityGroupProtocolRequiredWithPorts()
|
|
ip_proto = self._get_ip_proto_number(rule['protocol'])
|
|
if ip_proto in [constants.TCP_PROTOCOL, constants.UDP_PROTOCOL]:
|
|
if (rule['port_range_min'] is not None and
|
|
rule['port_range_min'] <= rule['port_range_max']):
|
|
pass
|
|
else:
|
|
raise ext_sg.SecurityGroupInvalidPortRange()
|
|
elif ip_proto == constants.ICMP_PROTOCOL:
|
|
for attr, field in [('port_range_min', 'type'),
|
|
('port_range_max', 'code')]:
|
|
if rule[attr] > 255:
|
|
raise ext_sg.SecurityGroupInvalidIcmpValue(
|
|
field=field, attr=attr, value=rule[attr])
|
|
|
|
def _validate_security_group_rules(self, context, security_group_rule):
|
|
"""Check that rules being installed.
|
|
|
|
Check that all rules belong to the same security
|
|
group, remote_group_id/security_group_id belong to the same tenant,
|
|
and rules are valid.
|
|
"""
|
|
new_rules = set()
|
|
tenant_ids = set()
|
|
for rules in security_group_rule['security_group_rules']:
|
|
rule = rules.get('security_group_rule')
|
|
new_rules.add(rule['security_group_id'])
|
|
|
|
self._validate_port_range(rule)
|
|
|
|
if rule['remote_ip_prefix'] and rule['remote_group_id']:
|
|
raise ext_sg.SecurityGroupRemoteGroupAndRemoteIpPrefix()
|
|
|
|
if rule['tenant_id'] not in tenant_ids:
|
|
tenant_ids.add(rule['tenant_id'])
|
|
remote_group_id = rule.get('remote_group_id')
|
|
# Check that remote_group_id exists for tenant
|
|
if remote_group_id:
|
|
self.get_security_group(context, remote_group_id,
|
|
tenant_id=rule['tenant_id'])
|
|
if len(new_rules) > 1:
|
|
raise ext_sg.SecurityGroupNotSingleGroupRules()
|
|
security_group_id = new_rules.pop()
|
|
|
|
# Confirm single tenant and that the tenant has permission
|
|
# to add rules to this security group.
|
|
if len(tenant_ids) > 1:
|
|
raise ext_sg.SecurityGroupRulesNotSingleTenant()
|
|
for tenant_id in tenant_ids:
|
|
self.get_security_group(context, security_group_id,
|
|
tenant_id=tenant_id)
|
|
return security_group_id
|
|
|
|
def _make_security_group_rule_dict(self, security_group_rule, fields=None):
|
|
res = {'id': security_group_rule['id'],
|
|
'tenant_id': security_group_rule['tenant_id'],
|
|
'security_group_id': security_group_rule['security_group_id'],
|
|
'ethertype': security_group_rule['ethertype'],
|
|
'direction': security_group_rule['direction'],
|
|
'protocol': security_group_rule['protocol'],
|
|
'port_range_min': security_group_rule['port_range_min'],
|
|
'port_range_max': security_group_rule['port_range_max'],
|
|
'remote_ip_prefix': security_group_rule['remote_ip_prefix'],
|
|
'remote_group_id': security_group_rule['remote_group_id']}
|
|
|
|
return self._fields(res, fields)
|
|
|
|
def _make_security_group_rule_filter_dict(self, security_group_rule):
|
|
sgr = security_group_rule['security_group_rule']
|
|
res = {'tenant_id': [sgr['tenant_id']],
|
|
'security_group_id': [sgr['security_group_id']],
|
|
'direction': [sgr['direction']]}
|
|
|
|
include_if_present = ['protocol', 'port_range_max', 'port_range_min',
|
|
'ethertype', 'remote_ip_prefix',
|
|
'remote_group_id']
|
|
for key in include_if_present:
|
|
value = sgr.get(key)
|
|
if value:
|
|
res[key] = [value]
|
|
return res
|
|
|
|
def _check_for_duplicate_rules(self, context, security_group_rules):
|
|
for i in security_group_rules:
|
|
found_self = False
|
|
for j in security_group_rules:
|
|
if i['security_group_rule'] == j['security_group_rule']:
|
|
if found_self:
|
|
raise ext_sg.DuplicateSecurityGroupRuleInPost(rule=i)
|
|
found_self = True
|
|
|
|
# Check in database if rule exists
|
|
filters = self._make_security_group_rule_filter_dict(i)
|
|
rules = self.get_security_group_rules(context, filters)
|
|
if rules:
|
|
raise ext_sg.SecurityGroupRuleExists(id=str(rules[0]['id']))
|
|
|
|
def get_security_group_rules(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
marker_obj = self._get_marker_obj(context, 'security_group_rule',
|
|
limit, marker)
|
|
return self._get_collection(context,
|
|
SecurityGroupRule,
|
|
self._make_security_group_rule_dict,
|
|
filters=filters, fields=fields,
|
|
sorts=sorts,
|
|
limit=limit, marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
|
|
def get_security_group_rules_count(self, context, filters=None):
|
|
return self._get_collection_count(context, SecurityGroupRule,
|
|
filters=filters)
|
|
|
|
def get_security_group_rule(self, context, id, fields=None):
|
|
security_group_rule = self._get_security_group_rule(context, id)
|
|
return self._make_security_group_rule_dict(security_group_rule, fields)
|
|
|
|
def _get_security_group_rule(self, context, id):
|
|
try:
|
|
query = self._model_query(context, SecurityGroupRule)
|
|
sgr = query.filter(SecurityGroupRule.id == id).one()
|
|
except exc.NoResultFound:
|
|
raise ext_sg.SecurityGroupRuleNotFound(id=id)
|
|
return sgr
|
|
|
|
def delete_security_group_rule(self, context, id):
|
|
with context.session.begin(subtransactions=True):
|
|
rule = self._get_security_group_rule(context, id)
|
|
context.session.delete(rule)
|
|
|
|
def _extend_port_dict_security_group(self, port_res, port_db):
|
|
# Security group bindings will be retrieved from the sqlalchemy
|
|
# model. As they're loaded eagerly with ports because of the
|
|
# joined load they will not cause an extra query.
|
|
security_group_ids = [sec_group_mapping['security_group_id'] for
|
|
sec_group_mapping in port_db.security_groups]
|
|
port_res[ext_sg.SECURITYGROUPS] = security_group_ids
|
|
return port_res
|
|
|
|
# Register dict extend functions for ports
|
|
db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs(
|
|
attr.PORTS, ['_extend_port_dict_security_group'])
|
|
|
|
def _process_port_create_security_group(self, context, port,
|
|
security_group_ids):
|
|
if attr.is_attr_set(security_group_ids):
|
|
for security_group_id in security_group_ids:
|
|
self._create_port_security_group_binding(context, port['id'],
|
|
security_group_id)
|
|
# Convert to list as a set might be passed here and
|
|
# this has to be serialized
|
|
port[ext_sg.SECURITYGROUPS] = (security_group_ids and
|
|
list(security_group_ids) or [])
|
|
|
|
def _ensure_default_security_group(self, context, tenant_id):
|
|
"""Create a default security group if one doesn't exist.
|
|
|
|
:returns: the default security group id.
|
|
"""
|
|
filters = {'name': ['default'], 'tenant_id': [tenant_id]}
|
|
default_group = self.get_security_groups(context, filters,
|
|
default_sg=True)
|
|
if not default_group:
|
|
security_group = {'security_group': {'name': 'default',
|
|
'tenant_id': tenant_id,
|
|
'description': 'default'}}
|
|
ret = self.create_security_group(context, security_group, True)
|
|
return ret['id']
|
|
else:
|
|
return default_group[0]['id']
|
|
|
|
def _get_security_groups_on_port(self, context, port):
|
|
"""Check that all security groups on port belong to tenant.
|
|
|
|
:returns: all security groups IDs on port belonging to tenant.
|
|
"""
|
|
p = port['port']
|
|
if not attr.is_attr_set(p.get(ext_sg.SECURITYGROUPS)):
|
|
return
|
|
if p.get('device_owner') and p['device_owner'].startswith('network:'):
|
|
return
|
|
|
|
valid_groups = self.get_security_groups(context, fields=['id'])
|
|
valid_group_map = dict((g['id'], g['id']) for g in valid_groups)
|
|
try:
|
|
return set([valid_group_map[sg_id]
|
|
for sg_id in p.get(ext_sg.SECURITYGROUPS, [])])
|
|
except KeyError as e:
|
|
raise ext_sg.SecurityGroupNotFound(id=str(e))
|
|
|
|
def _ensure_default_security_group_on_port(self, context, port):
|
|
# we don't apply security groups for dhcp, router
|
|
if (port['port'].get('device_owner') and
|
|
port['port']['device_owner'].startswith('network:')):
|
|
return
|
|
tenant_id = self._get_tenant_id_for_create(context,
|
|
port['port'])
|
|
default_sg = self._ensure_default_security_group(context, tenant_id)
|
|
if attr.is_attr_set(port['port'].get(ext_sg.SECURITYGROUPS)):
|
|
sgids = port['port'].get(ext_sg.SECURITYGROUPS)
|
|
else:
|
|
sgids = [default_sg]
|
|
port['port'][ext_sg.SECURITYGROUPS] = sgids
|
|
|
|
def _check_update_deletes_security_groups(self, port):
|
|
"""Return True if port has as a security group and it's value
|
|
is either [] or not is_attr_set, otherwise return False
|
|
"""
|
|
if (ext_sg.SECURITYGROUPS in port['port'] and
|
|
not (attr.is_attr_set(port['port'][ext_sg.SECURITYGROUPS])
|
|
and port['port'][ext_sg.SECURITYGROUPS] != [])):
|
|
return True
|
|
return False
|
|
|
|
def _check_update_has_security_groups(self, port):
|
|
"""Return True if port has as a security group and False if the
|
|
security_group field is is_attr_set or [].
|
|
"""
|
|
if (ext_sg.SECURITYGROUPS in port['port'] and
|
|
(attr.is_attr_set(port['port'][ext_sg.SECURITYGROUPS]) and
|
|
port['port'][ext_sg.SECURITYGROUPS] != [])):
|
|
return True
|
|
return False
|