#!/usr/bin/env python3 # # Copyright (C) 2021 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . import unittest from base_vyostest_shim import VyOSUnitTestSHIM from vyos.configsession import ConfigSessionError from vyos.ifconfig import Section from vyos.util import cmd from vyos.util import process_named_running from vyos.util import read_file PROCESS_NAME = 'uacctd' base_path = ['system', 'flow-accounting'] uacctd_conf = '/run/pmacct/uacctd.conf' class TestSystemFlowAccounting(VyOSUnitTestSHIM.TestCase): @classmethod def setUpClass(cls): super(TestSystemFlowAccounting, cls).setUpClass() # ensure we can also run this test on a live system - so lets clean # out the current configuration :) cls.cli_delete(cls, base_path) def tearDown(self): # after service removal process must no longer run self.assertTrue(process_named_running(PROCESS_NAME)) self.cli_delete(base_path) self.cli_commit() # after service removal process must no longer run self.assertFalse(process_named_running(PROCESS_NAME)) def test_basic(self): buffer_size = '5' # MiB syslog = 'all' self.cli_set(base_path + ['buffer-size', buffer_size]) self.cli_set(base_path + ['syslog-facility', syslog]) # You need to configure at least one interface for flow-accounting with self.assertRaises(ConfigSessionError): self.cli_commit() for interface in Section.interfaces('ethernet'): self.cli_set(base_path + ['interface', interface]) # commit changes self.cli_commit() # verify configuration nftables_output = cmd('sudo nft list chain raw VYOS_CT_PREROUTING_HOOK').splitlines() for interface in Section.interfaces('ethernet'): rule_found = False ifname_search = f'iifname "{interface}"' for nftables_line in nftables_output: if 'FLOW_ACCOUNTING_RULE' in nftables_line and ifname_search in nftables_line: self.assertIn('group 2', nftables_line) self.assertIn('snaplen 128', nftables_line) self.assertIn('queue-threshold 100', nftables_line) rule_found = True break self.assertTrue(rule_found) uacctd = read_file(uacctd_conf) # circular queue size - buffer_size tmp = int(buffer_size) *1024 *1024 self.assertIn(f'plugin_pipe_size: {tmp}', uacctd) # transfer buffer size - recommended value from pmacct developers 1/1000 of pipe size tmp = int(buffer_size) *1024 *1024 # do an integer division tmp //= 1000 self.assertIn(f'plugin_buffer_size: {tmp}', uacctd) # when 'disable-imt' is not configured on the CLI it must be present self.assertIn(f'imt_path: /tmp/uacctd.pipe', uacctd) self.assertIn(f'imt_mem_pools_number: 169', uacctd) self.assertIn(f'syslog: {syslog}', uacctd) self.assertIn(f'plugins: memory', uacctd) def test_sflow(self): sampling_rate = '4000' source_address = '192.0.2.1' dummy_if = 'dum3841' agent_address = '192.0.2.2' sflow_server = { '1.2.3.4' : { }, '5.6.7.8' : { 'port' : '6000' } } self.cli_set(['interfaces', 'dummy', dummy_if, 'address', agent_address + '/32']) self.cli_set(base_path + ['disable-imt']) # You need to configure at least one interface for flow-accounting with self.assertRaises(ConfigSessionError): self.cli_commit() for interface in Section.interfaces('ethernet'): self.cli_set(base_path + ['interface', interface]) # You need to configure at least one sFlow or NetFlow protocol, or not # set "disable-imt" for flow-accounting with self.assertRaises(ConfigSessionError): self.cli_commit() self.cli_set(base_path + ['sflow', 'agent-address', agent_address]) self.cli_set(base_path + ['sflow', 'sampling-rate', sampling_rate]) self.cli_set(base_path + ['sflow', 'source-address', source_address]) for server, server_config in sflow_server.items(): self.cli_set(base_path + ['sflow', 'server', server]) if 'port' in server_config: self.cli_set(base_path + ['sflow', 'server', server, 'port', server_config['port']]) # commit changes self.cli_commit() uacctd = read_file(uacctd_conf) # when 'disable-imt' is not configured on the CLI it must be present self.assertNotIn(f'imt_path: /tmp/uacctd.pipe', uacctd) self.assertNotIn(f'imt_mem_pools_number: 169', uacctd) self.assertNotIn(f'plugins: memory', uacctd) for server, server_config in sflow_server.items(): if 'port' in server_config: self.assertIn(f'sfprobe_receiver[sf_{server}]: {server}', uacctd) else: self.assertIn(f'sfprobe_receiver[sf_{server}]: {server}:6343', uacctd) self.assertIn(f'sfprobe_agentip[sf_{server}]: {agent_address}', uacctd) self.assertIn(f'sampling_rate[sf_{server}]: {sampling_rate}', uacctd) self.assertIn(f'sfprobe_source_ip[sf_{server}]: {source_address}', uacctd) self.cli_delete(['interfaces', 'dummy', dummy_if]) def test_netflow(self): engine_id = '33' max_flows = '667' sampling_rate = '100' source_address = '192.0.2.1' dummy_if = 'dum3842' agent_address = '192.0.2.10' version = '10' tmo_expiry = '120' tmo_flow = '1200' tmo_icmp = '60' tmo_max = '50000' tmo_tcp_fin = '100' tmo_tcp_generic = '120' tmo_tcp_rst = '99' tmo_udp = '10' netflow_server = { '11.22.33.44' : { }, '55.66.77.88' : { 'port' : '6000' } } self.cli_set(['interfaces', 'dummy', dummy_if, 'address', agent_address + '/32']) for interface in Section.interfaces('ethernet'): self.cli_set(base_path + ['interface', interface]) self.cli_set(base_path + ['netflow', 'engine-id', engine_id]) self.cli_set(base_path + ['netflow', 'max-flows', max_flows]) self.cli_set(base_path + ['netflow', 'sampling-rate', sampling_rate]) self.cli_set(base_path + ['netflow', 'source-address', source_address]) self.cli_set(base_path + ['netflow', 'version', version]) # timeouts self.cli_set(base_path + ['netflow', 'timeout', 'expiry-interval', tmo_expiry]) self.cli_set(base_path + ['netflow', 'timeout', 'flow-generic', tmo_flow]) self.cli_set(base_path + ['netflow', 'timeout', 'icmp', tmo_icmp]) self.cli_set(base_path + ['netflow', 'timeout', 'max-active-life', tmo_max]) self.cli_set(base_path + ['netflow', 'timeout', 'tcp-fin', tmo_tcp_fin]) self.cli_set(base_path + ['netflow', 'timeout', 'tcp-generic', tmo_tcp_generic]) self.cli_set(base_path + ['netflow', 'timeout', 'tcp-rst', tmo_tcp_rst]) self.cli_set(base_path + ['netflow', 'timeout', 'udp', tmo_udp]) # You need to configure at least one netflow server with self.assertRaises(ConfigSessionError): self.cli_commit() for server, server_config in netflow_server.items(): self.cli_set(base_path + ['netflow', 'server', server]) if 'port' in server_config: self.cli_set(base_path + ['netflow', 'server', server, 'port', server_config['port']]) # commit changes self.cli_commit() uacctd = read_file(uacctd_conf) tmp = [] for server, server_config in netflow_server.items(): tmp.append(f'nfprobe[nf_{server}]') tmp.append('memory') self.assertIn('plugins: ' + ','.join(tmp), uacctd) for server, server_config in netflow_server.items(): self.assertIn(f'nfprobe_engine[nf_{server}]: {engine_id}', uacctd) self.assertIn(f'nfprobe_maxflows[nf_{server}]: {max_flows}', uacctd) self.assertIn(f'sampling_rate[nf_{server}]: {sampling_rate}', uacctd) self.assertIn(f'nfprobe_source_ip[nf_{server}]: {source_address}', uacctd) self.assertIn(f'nfprobe_version[nf_{server}]: {version}', uacctd) if 'port' in server_config: self.assertIn(f'nfprobe_receiver[nf_{server}]: {server}', uacctd) else: self.assertIn(f'nfprobe_receiver[nf_{server}]: {server}:2055', uacctd) self.assertIn(f'nfprobe_timeouts[nf_{server}]: expint={tmo_expiry}:general={tmo_flow}:icmp={tmo_icmp}:maxlife={tmo_max}:tcp.fin={tmo_tcp_fin}:tcp={tmo_tcp_generic}:tcp.rst={tmo_tcp_rst}:udp={tmo_udp}', uacctd) self.cli_delete(['interfaces', 'dummy', dummy_if]) if __name__ == '__main__': unittest.main(verbosity=2)