def RemoveIPBlock(self, request, context):
""" Attempt to remove IP blocks and return the removed blocks """
logging.debug("Received RemoveIPBlock")
self._print_grpc(request)
removed_blocks = self._ip_address_man.remove_ip_blocks(
*[
self._ipblock_msg_to_ipblock(ipblock_msg, context)
for ipblock_msg in request.ip_blocks
],
force=request.force,
)
removed_block_msgs = []
for block in removed_blocks:
if block.version == 4:
removed_block_msgs.append(
IPBlock(
version=IPAddress.IPV4,
net_address=block.network_address.packed,
prefix_len=block.prefixlen,
), )
elif block.version == 6:
removed_block_msgs.append(
IPBlock(
version=IPAddress.IPV6,
net_address=block.network_address.packed,
prefix_len=block.prefixlen,
), )
resp = RemoveIPBlockResponse()
resp.ip_blocks.extend(removed_block_msgs)
self._print_grpc(resp)
return resp
def _get_ip_data(block):
"""
Construct an IPBlock message from a given IP block.
Args:
block (ipaddress.ip_network): the IP block to embed
"""
ipblock_msg = IPBlock()
ipblock_msg.version = IPBlock.IPV4
ipblock_msg.net_address = block.network_address.packed
ipblock_msg.prefix_len = block.prefixlen
return ipblock_msg
def setUp(self):
# Bind the rpc server to a free port
thread_pool = futures.ThreadPoolExecutor(max_workers=10)
self._rpc_server = grpc.server(thread_pool)
port = self._rpc_server.add_insecure_port('0.0.0.0:0')
store = MobilityStore(get_default_client(), False, 3980)
store.dhcp_gw_info.read_default_gw()
ip_allocator = IpAllocatorPool(store)
ipv6_allocator = IPv6AllocatorPool(
store,
session_prefix_alloc_mode='RANDOM',
)
self._allocator = IPAddressManager(
ip_allocator,
ipv6_allocator,
store,
)
# Add the servicer
self._servicer = MobilityServiceRpcServicer(self._allocator, False)
self._servicer.add_to_server(self._rpc_server)
self._rpc_server.start()
# Create a rpc stub
channel = grpc.insecure_channel('0.0.0.0:{}'.format(port))
self._stub = MobilityServiceStub(channel)
# variables shared across tests
self._netaddr = '192.168.0.0'
self._prefix_len = 28
ip_bytes = bytes(map(int, self._netaddr.split('.')))
self._block_msg = IPBlock(
version=IPBlock.IPV4,
net_address=ip_bytes,
prefix_len=self._prefix_len,
)
self._ipv6_block = ipaddress.ip_network('fdee:5:6c::/48')
self._ipv6_netaddr = self._ipv6_block.network_address.packed
self._ipv6_block_msg = IPBlock(
version=IPBlock.IPV6,
net_address=self._ipv6_netaddr,
prefix_len=self._ipv6_block.prefixlen,
)
self._block = ipaddress.ip_network(
"%s/%s" % (self._netaddr, self._prefix_len),
)
self._sid0 = SIDUtils.to_pb('IMSI0')
self._sid1 = SIDUtils.to_pb('IMSI1')
self._sid2 = SIDUtils.to_pb('IMSI2')
self._apn0 = 'Internet'
self._apn1 = 'IMS'
def add_ip_block_handler(client, args):
try:
ipblock = ipaddress.ip_network(args.ipblock)
except ValueError:
print("Error: invalid IP block format: %s" % args.ipblock)
return
ipblock_msg = IPBlock()
if ipblock.version == 4:
ipblock_msg.version = IPBlock.IPV4
else:
print("Error: IP version %d is not supported yet" % ipblock.version)
return
ipblock_msg.net_address = ipblock.network_address.packed
ipblock_msg.prefix_len = ipblock.prefixlen
client.AddIPBlock(ipblock_msg)
def deserialize_ip_block(serialized):
"""
Deserialize protobuf string to an IP block.
Args:
serialized (bytes): object to deserialize
Returns:
block (ipaddress.ip_network): deserialized object
"""
proto = IPBlock()
proto.ParseFromString(serialized)
address_str = ip_address(proto.net_address).exploded
network_str = '{}/{}'.format(address_str, proto.prefix_len)
block = ip_network(network_str)
return block
def test_ipv6_unimplemented(self):
""" ipv6 requests should raise UNIMPLEMENTED """
ip = ipaddress.ip_address("fc::")
block = IPBlock(version=IPBlock.IPV6,
net_address=ip.packed,
prefix_len=120)
# AddIPBlock
with self.assertRaises(grpc.RpcError) as err:
self._stub.AddIPBlock(block)
self.assertEqual(err.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
# ListAllocatedIPs
with self.assertRaises(grpc.RpcError) as err:
self._stub.ListAllocatedIPs(block)
self.assertEqual(err.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
# AllocateIPAddress
request = AllocateIPRequest(sid=self._sid1,
version=AllocateIPRequest.IPV6,
apn=self._apn0)
with self.assertRaises(grpc.RpcError) as err:
self._stub.AllocateIPAddress(request)
self.assertEqual(err.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
# ReleaseIPAddress
release_request = ReleaseIPRequest(
sid=self._sid0,
ip=IPAddress(version=IPAddress.IPV6),
apn=self._apn0)
with self.assertRaises(grpc.RpcError) as err:
self._stub.ReleaseIPAddress(release_request)
self.assertEqual(err.exception.code(), grpc.StatusCode.UNIMPLEMENTED)
def test_list_invalid_ip_block(self):
""" listing invalid ipblock should raise INVALID_ARGUMENT """
block_msg = IPBlock()
with self.assertRaises(grpc.RpcError) as err:
self._stub.ListAllocatedIPs(block_msg)
self.assertEqual(err.exception.code(),
grpc.StatusCode.INVALID_ARGUMENT)
def setUp(self):
# Bind the rpc server to a free port
thread_pool = futures.ThreadPoolExecutor(max_workers=10)
self._rpc_server = grpc.server(thread_pool)
port = self._rpc_server.add_insecure_port('0.0.0.0:0')
# Create a mock "mconfig" for the servicer to use
mconfig = unittest.mock.Mock()
mconfig.ip_block = None
# Add the servicer
config = {'persist_to_redis': False, 'redis_port': None}
self._servicer = MobilityServiceRpcServicer(mconfig, config)
self._servicer.add_to_server(self._rpc_server)
self._rpc_server.start()
# Create a rpc stub
channel = grpc.insecure_channel('0.0.0.0:{}'.format(port))
self._stub = MobilityServiceStub(channel)
# variables shared across tests
self._netaddr = '192.168.0.0'
self._prefix_len = 28
ip_bytes = bytes(map(int, self._netaddr.split('.')))
self._block_msg = IPBlock(version=IPBlock.IPV4,
net_address=ip_bytes,
prefix_len=self._prefix_len)
self._block = ipaddress.ip_network("%s/%s" %
(self._netaddr, self._prefix_len))
self._sid0 = SIDUtils.to_pb('IMSI0')
self._sid1 = SIDUtils.to_pb('IMSI1')
self._sid2 = SIDUtils.to_pb('IMSI2')
self._apn0 = 'Internet'
self._apn1 = 'IMS'
def _ip_desc_to_proto(desc):
"""
Convert an IP descriptor to protobuf.
Args:
desc (magma.mobilityd.IPDesc): IP descriptor
Returns:
proto (protos.keyval_pb2.IPDesc): protobuf of :desc:
"""
ip = IPAddress(
version=_ip_version_int_to_proto(desc.ip_block.version),
address=desc.ip.packed,
)
ip_block = IPBlock(
version=_ip_version_int_to_proto(desc.ip_block.version),
net_address=desc.ip_block.network_address.packed,
prefix_len=desc.ip_block.prefixlen,
)
state = _desc_state_str_to_proto(desc.state)
sid = SubscriberID(
id=desc.sid,
type=SubscriberID.IMSI,
)
proto = IPDesc(ip=ip, ip_block=ip_block, state=state, sid=sid)
return proto
def serialize_ip_block(block):
"""
Serialize an IP block to protobuf string.
Args:
block (ipaddress.ip_network): object to serialize
Returns:
serialized (bytes): serialized object
"""
proto = IPBlock(
version=_ip_version_int_to_proto(block.version),
net_address=block.network_address.packed,
prefix_len=block.prefixlen,
)
serialized = proto.SerializeToString()
return serialized
def remove_ip_blocks(self, blocks):
try:
ip_blocks = [
IPBlock(version={
4: IPAddress.IPV4,
6: IPAddress.IPV6
}[block.version],
net_address=block.network_address.packed,
prefix_len=block.prefixlen) for block in blocks
]
response = self._mobility_stub.RemoveIPBlock(
RemoveIPBlockRequest(ip_blocks=ip_blocks, force=False))
removed_ip_block_list = ()
for block in response.ip_blocks:
address_bytes = block.net_address
address_int = int.from_bytes(address_bytes, byteorder='big')
address = ipaddress.ip_address(address_int)
removed_ip_block_list += (ipaddress.ip_network(
"%s/%d" % (address, block.prefix_len)), )
return removed_ip_block_list
except grpc.RpcError as error:
err_code = error.exception().code()
if (err_code == grpc.StatusCode.FAILED_PRECONDITION):
logging.info("Ignoring FAILED_PRECONDITION exception")
else:
raise
def add_to_ip_blocks_list(subnet: str):
block = ipaddress.ip_network(subnet)
ip_block = IPBlock(
version=IPAddress.IPV4,
net_address=block.network_address.packed,
prefix_len=block.prefixlen,
)
ip_blocks_list.append(ip_block)
def _setup_ip_block(client):
ip_blocks_rsp = client.ListAddedIPv4Blocks(Void())
remove_blocks_req = RemoveIPBlockRequest(force=True)
for block in ip_blocks_rsp.ip_block_list:
remove_blocks_req.ip_blocks.append(block)
client.RemoveIPBlock(remove_blocks_req)
ip_block = ipaddress.ip_network('192.168.128.0/20')
client.AddIPBlock(IPBlock(version=IPBlock.IPV4,
net_address=ip_block.network_address.packed,
prefix_len=ip_block.prefixlen))
def test_list_allocated_ips_from_unknown_ipblock(self):
""" test list allocated IPs from an unknown IP block """
self._stub.AddIPBlock(self._block_msg)
ip_bytes = bytes(map(int, '10.0.0.0'.split('.')))
block_msg = IPBlock(version=IPBlock.IPV4,
net_address=ip_bytes,
prefix_len=30)
with self.assertRaises(grpc.RpcError) as err:
self._stub.ListAllocatedIPs(block_msg)
self.assertEqual(err.exception.code(),
grpc.StatusCode.FAILED_PRECONDITION)
def remove_ip_block_handler(client, args):
ipblock_msgs = ()
for ipblock in args.ipblocks:
ipblock_msg = IPBlock()
if ipblock.version == 4:
ipblock_msg.version = IPBlock.IPV4
else:
print("Error: IP version %d is not supported yet" %
ipblock.version)
return
ipblock_msg.net_address = ipblock.network_address.packed
ipblock_msg.prefix_len = ipblock.prefixlen
ipblock_msgs += (ipblock_msg, )
request = RemoveIPBlockRequest(ip_blocks=ipblock_msgs, force=args.force)
remove_response = client.RemoveIPBlock(request)
print("IPv4 Blocks Removed: ")
for block_msg in remove_response.ip_blocks:
ip = ipaddress.ip_address(block_msg.net_address)
block = ipaddress.ip_network("%s/%d" % (ip, block_msg.prefix_len))
print("\t%s" % block)
def ListAddedIPv4Blocks(self, void, context):
""" Return a list of IPv4 blocks assigned """
resp = ListAddedIPBlocksResponse()
ip_blocks = self._ipv4_allocator.list_added_ip_blocks()
ip_block_msg_list = [IPBlock(version=IPAddress.IPV4,
net_address=block.network_address.packed,
prefix_len=block.prefixlen)
for block in ip_blocks]
resp.ip_block_list.extend(ip_block_msg_list)
return resp
def test_add_overlapped_ip_block(self):
""" overlaping IPBlocks should raise FAILED_PRECONDITION """
self._stub.AddIPBlock(self._block_msg)
# overlaped block
ip_bytes = bytes(map(int, self._netaddr.split('.')))
block_msg = IPBlock(version=IPBlock.IPV4,
net_address=ip_bytes,
prefix_len=30)
with self.assertRaises(grpc.RpcError) as err:
self._stub.AddIPBlock(block_msg)
self.assertEqual(err.exception.code(),
grpc.StatusCode.FAILED_PRECONDITION)
def RemoveIPBlock(self, request, context):
""" Attempt to remove IP blocks and return the removed blocks """
removed_blocks = self._ipv4_allocator.remove_ip_blocks(
*[self._ipblock_msg_to_ipblock(ipblock_msg, context)
for ipblock_msg in request.ip_blocks],
force=request.force)
removed_block_msgs = [IPBlock(version=IPAddress.IPV4,
net_address=block.network_address.packed,
prefix_len=block.prefixlen)
for block in removed_blocks]
resp = RemoveIPBlockResponse()
resp.ip_blocks.extend(removed_block_msgs)
return resp
def ListAddedIPv4Blocks(self, void, context):
""" Return a list of IPv4 blocks assigned """
logging.debug("Received ListAddedIPv4Blocks")
self._print_grpc(void)
resp = ListAddedIPBlocksResponse()
ip_blocks = self._ip_address_man.list_added_ip_blocks()
ip_block_msg_list = [
IPBlock(version=IPAddress.IPV4,
net_address=block.network_address.packed,
prefix_len=block.prefixlen) for block in ip_blocks
]
resp.ip_block_list.extend(ip_block_msg_list)
self._print_grpc(resp)
return resp
def ListAddedIPv6Blocks(self, request, context):
""" Return a list of IPv6 blocks assigned """
self._print_grpc(request)
resp = ListAddedIPBlocksResponse()
ip_blocks = self._ip_address_man.get_assigned_ipv6_block()
ip_block_msg_list = [
IPBlock(
version=IPAddress.IPV6,
net_address=block.network_address.packed,
prefix_len=block.prefixlen,
) for block in ip_blocks
]
resp.ip_block_list.extend(ip_block_msg_list)
self._print_grpc(resp)
return resp
