from units.compat.mock import patch from ansible.module_utils import basic from ansible.modules.system import iptables from units.modules.utils import AnsibleExitJson, AnsibleFailJson, ModuleTestCase, set_module_args def get_bin_path(*args, **kwargs): return "/sbin/iptables" class TestIptables(ModuleTestCase): def setUp(self): super(TestIptables, self).setUp() self.mock_get_bin_path = patch.object(basic.AnsibleModule, 'get_bin_path', get_bin_path) self.mock_get_bin_path.start() self.addCleanup(self.mock_get_bin_path.stop) # ensure that the patching is 'undone' def test_without_required_parameters(self): """Failure must occurs when all parameters are missing""" with self.assertRaises(AnsibleFailJson): set_module_args({}) iptables.main() def test_flush_table_without_chain(self): """Test flush without chain, flush the table""" set_module_args({ 'flush': True, }) with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.return_value = 0, '', '' # successful execution, no output with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args[0][0][0], '/sbin/iptables') self.assertEqual(run_command.call_args[0][0][1], '-t') self.assertEqual(run_command.call_args[0][0][2], 'filter') self.assertEqual(run_command.call_args[0][0][3], '-F') def test_flush_table_check_true(self): """Test flush without parameters and check == true""" set_module_args({ 'flush': True, '_ansible_check_mode': True, }) with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.return_value = 0, '', '' # successful execution, no output with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 0) # TODO ADD test flush table nat # TODO ADD test flush with chain # TODO ADD test flush with chain and table nat def test_policy_table(self): """Test change policy of a chain""" set_module_args({ 'policy': 'ACCEPT', 'chain': 'INPUT', }) commands_results = [ (0, 'Chain INPUT (policy DROP)\n', ''), (0, '', '') ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 2) # import pdb # pdb.set_trace() self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-L', 'INPUT', ]) self.assertEqual(run_command.call_args_list[1][0][0], [ '/sbin/iptables', '-t', 'filter', '-P', 'INPUT', 'ACCEPT', ]) def test_policy_table_no_change(self): """Test don't change policy of a chain if the policy is right""" set_module_args({ 'policy': 'ACCEPT', 'chain': 'INPUT', }) commands_results = [ (0, 'Chain INPUT (policy ACCEPT)\n', ''), (0, '', '') ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertFalse(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) # import pdb # pdb.set_trace() self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-L', 'INPUT', ]) def test_policy_table_changed_false(self): """Test flush without parameters and change == false""" set_module_args({ 'policy': 'ACCEPT', 'chain': 'INPUT', '_ansible_check_mode': True, }) commands_results = [ (0, 'Chain INPUT (policy DROP)\n', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) # import pdb # pdb.set_trace() self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-L', 'INPUT', ]) # TODO ADD test policy without chain fail # TODO ADD test policy with chain don't exists # TODO ADD test policy with wrong choice fail def test_insert_rule_change_false(self): """Test flush without parameters""" set_module_args({ 'chain': 'OUTPUT', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'ACCEPT', 'action': 'insert', '_ansible_check_mode': True, }) commands_results = [ (1, '', ''), (0, '', '') ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) # import pdb # pdb.set_trace() self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'OUTPUT', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'ACCEPT' ]) def test_insert_rule(self): """Test flush without parameters""" set_module_args({ 'chain': 'OUTPUT', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'ACCEPT', 'action': 'insert' }) commands_results = [ (1, '', ''), (0, '', '') ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 2) # import pdb # pdb.set_trace() self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'OUTPUT', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'ACCEPT' ]) self.assertEqual(run_command.call_args_list[1][0][0], [ '/sbin/iptables', '-t', 'filter', '-I', 'OUTPUT', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'ACCEPT' ]) def test_append_rule_check_mode(self): """Test append a redirection rule in check mode""" set_module_args({ 'chain': 'PREROUTING', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'REDIRECT', 'table': 'nat', 'to_destination': '5.5.5.5/32', 'protocol': 'udp', 'destination_port': '22', 'to_ports': '8600', '_ansible_check_mode': True, }) commands_results = [ (1, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'nat', '-C', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'REDIRECT', '--to-destination', '5.5.5.5/32', '--destination-port', '22', '--to-ports', '8600' ]) def test_append_rule(self): """Test append a redirection rule""" set_module_args({ 'chain': 'PREROUTING', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'REDIRECT', 'table': 'nat', 'to_destination': '5.5.5.5/32', 'protocol': 'udp', 'destination_port': '22', 'to_ports': '8600' }) commands_results = [ (1, '', ''), (0, '', '') ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 2) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'nat', '-C', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'REDIRECT', '--to-destination', '5.5.5.5/32', '--destination-port', '22', '--to-ports', '8600' ]) self.assertEqual(run_command.call_args_list[1][0][0], [ '/sbin/iptables', '-t', 'nat', '-A', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'REDIRECT', '--to-destination', '5.5.5.5/32', '--destination-port', '22', '--to-ports', '8600' ]) def test_remove_rule(self): """Test flush without parameters""" set_module_args({ 'chain': 'PREROUTING', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'SNAT', 'table': 'nat', 'to_source': '5.5.5.5/32', 'protocol': 'udp', 'source_port': '22', 'to_ports': '8600', 'state': 'absent', 'in_interface': 'eth0', 'out_interface': 'eth1', 'comment': 'this is a comment' }) commands_results = [ (0, '', ''), (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 2) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'nat', '-C', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'SNAT', '--to-source', '5.5.5.5/32', '-i', 'eth0', '-o', 'eth1', '--source-port', '22', '--to-ports', '8600', '-m', 'comment', '--comment', 'this is a comment' ]) self.assertEqual(run_command.call_args_list[1][0][0], [ '/sbin/iptables', '-t', 'nat', '-D', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'SNAT', '--to-source', '5.5.5.5/32', '-i', 'eth0', '-o', 'eth1', '--source-port', '22', '--to-ports', '8600', '-m', 'comment', '--comment', 'this is a comment' ]) def test_remove_rule_check_mode(self): """Test flush without parameters check mode""" set_module_args({ 'chain': 'PREROUTING', 'source': '1.2.3.4/32', 'destination': '7.8.9.10/42', 'jump': 'SNAT', 'table': 'nat', 'to_source': '5.5.5.5/32', 'protocol': 'udp', 'source_port': '22', 'to_ports': '8600', 'state': 'absent', 'in_interface': 'eth0', 'out_interface': 'eth1', 'comment': 'this is a comment', '_ansible_check_mode': True, }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'nat', '-C', 'PREROUTING', '-p', 'udp', '-s', '1.2.3.4/32', '-d', '7.8.9.10/42', '-j', 'SNAT', '--to-source', '5.5.5.5/32', '-i', 'eth0', '-o', 'eth1', '--source-port', '22', '--to-ports', '8600', '-m', 'comment', '--comment', 'this is a comment' ]) def test_insert_with_reject(self): """ Using reject_with with a previously defined jump: REJECT results in two Jump statements #18988 """ set_module_args({ 'chain': 'INPUT', 'protocol': 'tcp', 'reject_with': 'tcp-reset', 'ip_version': 'ipv4', }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-p', 'tcp', '-j', 'REJECT', '--reject-with', 'tcp-reset', ]) def test_insert_jump_reject_with_reject(self): """ Using reject_with with a previously defined jump: REJECT results in two Jump statements #18988 """ set_module_args({ 'chain': 'INPUT', 'protocol': 'tcp', 'jump': 'REJECT', 'reject_with': 'tcp-reset', 'ip_version': 'ipv4', }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-p', 'tcp', '-j', 'REJECT', '--reject-with', 'tcp-reset', ]) def test_jump_tee_gateway_negative(self): """ Missing gateway when JUMP is set to TEE """ set_module_args({ 'table': 'mangle', 'chain': 'PREROUTING', 'in_interface': 'eth0', 'protocol': 'udp', 'match': 'state', 'jump': 'TEE', 'ctstate': ['NEW'], 'destination_port': '9521', 'destination': '127.0.0.1' }) with self.assertRaises(AnsibleFailJson) as e: iptables.main() self.assertTrue(e.exception.args[0]['failed']) self.assertEqual(e.exception.args[0]['msg'], 'jump is TEE but all of the following are missing: gateway') def test_jump_tee_gateway(self): """ Using gateway when JUMP is set to TEE """ set_module_args({ 'table': 'mangle', 'chain': 'PREROUTING', 'in_interface': 'eth0', 'protocol': 'udp', 'match': 'state', 'jump': 'TEE', 'ctstate': ['NEW'], 'destination_port': '9521', 'gateway': '192.168.10.1', 'destination': '127.0.0.1' }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'mangle', '-C', 'PREROUTING', '-p', 'udp', '-d', '127.0.0.1', '-m', 'state', '-j', 'TEE', '--gateway', '192.168.10.1', '-i', 'eth0', '--destination-port', '9521', '--state', 'NEW' ]) def test_tcp_flags(self): """ Test various ways of inputting tcp_flags """ args = [ { 'chain': 'OUTPUT', 'protocol': 'tcp', 'jump': 'DROP', 'tcp_flags': 'flags=ALL flags_set="ACK,RST,SYN,FIN"' }, { 'chain': 'OUTPUT', 'protocol': 'tcp', 'jump': 'DROP', 'tcp_flags': { 'flags': 'ALL', 'flags_set': 'ACK,RST,SYN,FIN' } }, { 'chain': 'OUTPUT', 'protocol': 'tcp', 'jump': 'DROP', 'tcp_flags': { 'flags': ['ALL'], 'flags_set': ['ACK', 'RST', 'SYN', 'FIN'] } }, ] for item in args: set_module_args(item) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'OUTPUT', '-p', 'tcp', '--tcp-flags', 'ALL', 'ACK,RST,SYN,FIN', '-j', 'DROP' ]) def test_log_level(self): """ Test various ways of log level flag """ log_levels = ['0', '1', '2', '3', '4', '5', '6', '7', 'emerg', 'alert', 'crit', 'error', 'warning', 'notice', 'info', 'debug'] for log_lvl in log_levels: set_module_args({ 'chain': 'INPUT', 'jump': 'LOG', 'log_level': log_lvl, 'source': '1.2.3.4/32', 'log_prefix': '** DROP-this_ip **' }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-s', '1.2.3.4/32', '-j', 'LOG', '--log-prefix', '** DROP-this_ip **', '--log-level', log_lvl ]) def test_iprange(self): """ Test iprange module with its flags src_range and dst_range """ set_module_args({ 'chain': 'INPUT', 'match': ['iprange'], 'src_range': '192.168.1.100-192.168.1.199', 'jump': 'ACCEPT' }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-m', 'iprange', '-j', 'ACCEPT', '--src-range', '192.168.1.100-192.168.1.199', ]) set_module_args({ 'chain': 'INPUT', 'src_range': '192.168.1.100-192.168.1.199', 'dst_range': '10.0.0.50-10.0.0.100', 'jump': 'ACCEPT' }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-j', 'ACCEPT', '-m', 'iprange', '--src-range', '192.168.1.100-192.168.1.199', '--dst-range', '10.0.0.50-10.0.0.100' ]) set_module_args({ 'chain': 'INPUT', 'dst_range': '10.0.0.50-10.0.0.100', 'jump': 'ACCEPT' }) commands_results = [ (0, '', ''), ] with patch.object(basic.AnsibleModule, 'run_command') as run_command: run_command.side_effect = commands_results with self.assertRaises(AnsibleExitJson) as result: iptables.main() self.assertTrue(result.exception.args[0]['changed']) self.assertEqual(run_command.call_count, 1) self.assertEqual(run_command.call_args_list[0][0][0], [ '/sbin/iptables', '-t', 'filter', '-C', 'INPUT', '-j', 'ACCEPT', '-m', 'iprange', '--dst-range', '10.0.0.50-10.0.0.100' ])