def DisableStaticRules(
self,
request: DisableStaticRuleRequest,
context,
) -> Void:
"""
Unassociate the static rules with the specified subscriber.
Also send a RAR to sessiond to uninstall the specified rules for the
subscriber.
"""
try:
self._subscriberdb_stub.DisableStaticRules(request)
except grpc.RpcError:
logging.error('Unable to disable rules for subscriber %s. ',
request.imsi)
context.set_code(grpc.StatusCode.NOT_FOUND)
context.set_details('Failed to update rule assignments in orc8r')
return Void()
rar = PolicyReAuthRequest(
# Leave session id empty, re-auth for all sessions
imsi=request.imsi,
rules_to_remove=self._get_rules(request.rule_ids,
request.base_names)
)
success = self._reauth_handler.handle_policy_re_auth(rar)
if not success:
context.set_code(grpc.StatusCode.UNKNOWN)
context.set_details('Failed to enable all static rules for '
'subscriber. Partial update may have succeeded')
return Void()
def test_SuccessfulUpdate(self):
"""
Test the happy path where updates come in for added rules, and sessiond
accepts the RAR without issue.
"""
install_dict = {}
handler = ReAuthHandler(
install_dict,
MockSessionProxyResponderStub(),
)
rar = PolicyReAuthRequest(
imsi='s1',
rules_to_install=[
StaticRuleInstall(rule_id=rule_id) for rule_id in ['p1', 'p2']
],
)
handler.handle_policy_re_auth(rar)
s1_policies = install_dict['s1'].installed_policies
expected = 2
self.assertEqual(
len(s1_policies),
expected,
'There should be 2 installed policies for s1',
)
self.assertTrue(
'p1' in s1_policies,
'Policy p1 should be marked installed for p1',
)
rar = PolicyReAuthRequest(
imsi='s1',
rules_to_install=[StaticRuleInstall(rule_id='p3')],
)
handler.handle_policy_re_auth(rar)
s1_policies = install_dict['s1'].installed_policies
expected = 3
self.assertEqual(
len(s1_policies),
expected,
'There should be 3 installed policies for s1',
)
self.assertTrue(
'p3' in s1_policies,
'Policy p1 should be marked installed for p1',
)
def _generate_rar(
self,
subscriber_id: str,
added_rules: List[str],
removed_rules: List[str],
) -> PolicyReAuthRequest:
rules_to_install = [
StaticRuleInstall(rule_id=rule_id) for rule_id in added_rules
]
return PolicyReAuthRequest(
# Skip the session ID, so apply to all sessions of the subscriber
imsi=subscriber_id,
rules_to_install=rules_to_install,
rules_to_remove=removed_rules,
# No changes to dynamic rules
# No event triggers
# No additional usage monitoring credits
# No QoS info
)
def create_ReAuthRequest(self, imsi, policy_id, flow_list, qos):
"""
Sends Policy RAR message to session manager
"""
print("Sending Policy RAR message to session manager")
flow_match_list = []
res = None
self.get_flow_match(flow_list, flow_match_list)
policy_qos = FlowQos(
qci=qos["qci"],
max_req_bw_ul=qos["max_req_bw_ul"],
max_req_bw_dl=qos["max_req_bw_dl"],
gbr_ul=qos["gbr_ul"],
gbr_dl=qos["gbr_dl"],
arp=QosArp(
priority_level=qos["arp_prio"],
pre_capability=qos["pre_cap"],
pre_vulnerability=qos["pre_vul"],
),
)
policy_rule = PolicyRule(
id=policy_id,
priority=qos["priority"],
flow_list=flow_match_list,
tracking_type=PolicyRule.NO_TRACKING,
rating_group=1,
monitoring_key=None,
qos=policy_qos,
)
qos = QoSInformation(qci=qos["qci"])
# Get sessionid
req = GetDirectoryFieldRequest(id=imsi, field_key="session_id")
try:
res = self._directorydstub.GetDirectoryField(
req, DEFAULT_GRPC_TIMEOUT)
except grpc.RpcError as err:
logging.error(
"GetDirectoryFieldRequest error for id: %s! [%s] %s",
imsi,
err.code(),
err.details(),
)
self._session_stub.PolicyReAuth(
PolicyReAuthRequest(
session_id=res.value,
imsi=imsi,
rules_to_remove=[],
rules_to_install=[],
dynamic_rules_to_install=[
DynamicRuleInstall(policy_rule=policy_rule)
],
event_triggers=[],
revalidation_time=None,
usage_monitoring_credits=[],
qos_info=qos,
))
def test_reauth(self):
"""
Send a Gx reauth request which installs one new static rule, one new
dynamic rule, and removes one static and one dynamic rule.
"""
dynamic_rule1 = create_uplink_rule('dynamic1',
1,
'46.10.10.1',
tracking=PolicyRule.NO_TRACKING)
dynamic_rule2 = create_uplink_rule('dynamic2',
1,
'46.10.10.2',
tracking=PolicyRule.NO_TRACKING)
# Initialize sub with 1 static and 1 dynamic rule
sub = SubContextConfig('IMSI001010000088888', '192.168.128.74',
default_ambr_config, 4)
self.test_util.controller.mock_create_session = Mock(
return_value=CreateSessionResponse(
credits=[create_update_response(sub.imsi, 1, 1024)],
static_rules=[
session_manager_pb2.StaticRuleInstall(rule_id='policy1')
],
dynamic_rules=[
session_manager_pb2.DynamicRuleInstall(
policy_rule=dynamic_rule1)
],
usage_monitors=[],
), )
self.test_util.controller.mock_terminate_session = Mock(
return_value=SessionTerminateResponse(), )
self.test_util.sessiond.CreateSession(
LocalCreateSessionRequest(
sid=SubscriberID(id=sub.imsi),
ue_ipv4=sub.ip,
))
self.assertEqual(
self.test_util.controller.mock_create_session.call_count,
1,
)
# first, send some packets so we know that the uplink rules are
# accepting traffic
self._assert_rules(
sub,
[
session_manager_pb2.DynamicRuleInstall(
policy_rule=self.test_util.static_rules['policy1']),
session_manager_pb2.DynamicRuleInstall(
policy_rule=dynamic_rule1)
],
)
# Now via reauth, remove the old rules and install new uplink rules
# Verify the new uplink rules allow traffic
reauth_result = self.test_util.proxy_responder.PolicyReAuth(
PolicyReAuthRequest(
imsi=sub.imsi,
rules_to_remove=['dynamic1', 'policy1'],
rules_to_install=[
session_manager_pb2.StaticRuleInstall(rule_id='policy2')
],
dynamic_rules_to_install=[
session_manager_pb2.DynamicRuleInstall(
policy_rule=dynamic_rule2)
],
))
self.assertEqual(
reauth_result.result,
session_manager_pb2.UPDATE_INITIATED,
)
self.assertEqual(len(reauth_result.failed_rules), 0)
self._assert_rules(
sub,
[
session_manager_pb2.DynamicRuleInstall(
policy_rule=self.test_util.static_rules['policy2']),
session_manager_pb2.DynamicRuleInstall(
policy_rule=dynamic_rule2)
],
)
# Verify the old rules no longer allow traffic (uninstalled)
self._assert_rules(
sub,
[
session_manager_pb2.DynamicRuleInstall(
policy_rule=self.test_util.static_rules['policy1']),
session_manager_pb2.DynamicRuleInstall(
policy_rule=dynamic_rule1)
],
expected=0,
)
def create_ReAuthRequest(self, imsi, policy_id, flow_list, qos):
"""
Sends Policy RAR message to session manager
"""
print("Sending Policy RAR message to session manager")
flow_match_list = []
res = None
self.get_flow_match(flow_list, flow_match_list)
policy_qos = FlowQos(
qci=qos["qci"],
max_req_bw_ul=qos["max_req_bw_ul"],
max_req_bw_dl=qos["max_req_bw_dl"],
gbr_ul=qos["gbr_ul"],
gbr_dl=qos["gbr_dl"],
arp=QosArp(
priority_level=qos["arp_prio"],
pre_capability=qos["pre_cap"],
pre_vulnerability=qos["pre_vul"],
),
)
policy_rule = PolicyRule(
id=policy_id,
priority=qos["priority"],
flow_list=flow_match_list,
tracking_type=PolicyRule.NO_TRACKING,
rating_group=1,
monitoring_key=None,
qos=policy_qos,
)
qos = QoSInformation(qci=qos["qci"])
# Get sessionid
#TODO: remove retries
i = 0
MAX = 3
res = None
while i < MAX:
req = GetDirectoryFieldRequest(id=imsi, field_key="session_id")
try:
res = self._directorydstub.GetDirectoryField(
req, DEFAULT_GRPC_TIMEOUT)
except grpc.RpcError as err:
print(
"error: GetDirectoryFieldRequest error for id: %s! [%s] %s",
imsi,
err.code(),
err.details(),
)
if req != None:
i = MAX
else:
i += 1
print(
"warning: directoryd failed to return sessionId for %s. Retrying",
imsi)
time.sleep(3)
if res == None:
print("error: Couldnt find sessionid. Directoryd content:")
allRecordsResponse = self._directorydstub.GetAllDirectoryRecords(
Void(), DEFAULT_GRPC_TIMEOUT)
for record in allRecordsResponse.recordsResponse:
print("%s", str(record))
self._session_stub.PolicyReAuth(
PolicyReAuthRequest(
session_id=res.value,
imsi=imsi,
rules_to_remove=[],
rules_to_install=[],
dynamic_rules_to_install=[
DynamicRuleInstall(policy_rule=policy_rule)
],
event_triggers=[],
revalidation_time=None,
usage_monitoring_credits=[],
qos_info=qos,
))
def send_policy_rar(client, args):
sessiond_chan = ServiceRegistry.get_rpc_channel("sessiond", ServiceRegistry.LOCAL)
sessiond_client = SessionProxyResponderStub(sessiond_chan)
flow_list_str = args.flow_rules.split(";")
flow_match_list = []
for i, flow_str in enumerate(flow_list_str):
print("%d: %s" % (i, flow_str))
flow_fields = flow_str.split(",")
if flow_fields[0] == "UL":
flow_direction = FlowMatch.UPLINK
elif flow_fields[0] == "DL":
flow_direction = FlowMatch.DOWNLINK
else:
print("%s is not valid" % flow_fields[0])
raise ValueError(
"UL or DL are the only valid"
" values for first parameter of flow match"
)
ip_protocol = int(flow_fields[1])
if flow_fields[1] == FlowMatch.IPPROTO_TCP:
udp_src_port = 0
udp_dst_port = 0
if flow_fields[3]:
tcp_src_port = int(flow_fields[3])
else:
tcp_src_port = 0
if flow_fields[5]:
tcp_dst_port = int(flow_fields[5])
else:
tcp_dst_port = 0
elif flow_fields[1] == FlowMatch.IPPROTO_UDP:
tcp_src_port = 0
tcp_dst_port = 0
if flow_fields[3]:
udp_src_port = int(flow_fields[3])
else:
udp_src_port = 0
if flow_fields[5]:
udp_dst_port = int(flow_fields[5])
else:
udp_dst_port = 0
else:
udp_src_port = 0
udp_dst_port = 0
tcp_src_port = 0
tcp_dst_port = 0
flow_match_list.append(
FlowDescription(
match=FlowMatch(
direction=flow_direction,
ip_proto=ip_protocol,
ipv4_src=flow_fields[2],
ipv4_dst=flow_fields[4],
tcp_src=tcp_src_port,
tcp_dst=tcp_dst_port,
udp_src=udp_src_port,
udp_dst=udp_dst_port,
),
action=FlowDescription.PERMIT,
)
)
qos_parameter_list = args.qos.split(",")
if len(qos_parameter_list) == 7:
# utilize user passed arguments
policy_qos = FlowQos(
qci=int(args.qci),
max_req_bw_ul=int(qos_parameter_list[0]),
max_req_bw_dl=int(qos_parameter_list[1]),
gbr_ul=int(qos_parameter_list[2]),
gbr_dl=int(qos_parameter_list[3]),
arp=QosArp(
priority_level=int(qos_parameter_list[4]),
pre_capability=int(qos_parameter_list[5]),
pre_vulnerability=int(qos_parameter_list[6]),
),
)
else:
# parameter missing, use default values
policy_qos = FlowQos(
qci=int(args.qci),
max_req_bw_ul=100000,
max_req_bw_dl=100000,
arp=QosArp(priority_level=1, pre_capability=1, pre_vulnerability=0),
)
policy_rule = PolicyRule(
id=args.policy_id,
priority=int(args.priority),
flow_list=flow_match_list,
tracking_type=PolicyRule.NO_TRACKING,
rating_group=1,
monitoring_key=None,
qos=policy_qos,
)
qos = QoSInformation(qci=int(args.qci))
reauth_result = sessiond_client.PolicyReAuth(
PolicyReAuthRequest(
session_id=args.session_id,
imsi=args.imsi,
rules_to_remove=[],
rules_to_install=[],
dynamic_rules_to_install=[DynamicRuleInstall(policy_rule=policy_rule)],
event_triggers=[],
revalidation_time=None,
usage_monitoring_credits=[],
qos_info=qos,
)
)
print(reauth_result)