1#!/usr/bin/env python3
2
3# Check whether an extended auth plugin can change the username of a client.
4
5from mosq_test_helper import *
6
7def write_config(filename, acl_file, port, per_listener):
8    with open(filename, 'w') as f:
9        f.write("per_listener_settings %s\n" % (per_listener))
10        f.write("port %d\n" % (port))
11        f.write("acl_file %s\n" % (acl_file))
12        f.write("auth_plugin c/auth_plugin_extended_single.so\n")
13
14def write_acl(filename):
15    with open(filename, 'w') as f:
16        f.write('user new_username\n')
17        f.write('topic readwrite topic/one\n')
18
19port = mosq_test.get_port()
20conf_file = os.path.basename(__file__).replace('.py', '.conf')
21acl_file = os.path.basename(__file__).replace('.py', '.acl')
22
23def do_test(per_listener):
24    write_config(conf_file, acl_file, port, per_listener)
25    write_acl(acl_file)
26    rc = 1
27
28    # Connect without a username - this means no access
29    connect1_packet = mosq_test.gen_connect("client-params-test1", keepalive=42, proto_ver=5)
30    connack1_packet = mosq_test.gen_connack(rc=0, proto_ver=5)
31
32    mid = 1
33    subscribe_packet = mosq_test.gen_subscribe(mid, "topic/one", 1, proto_ver=5)
34    suback_packet = mosq_test.gen_suback(mid, 1, proto_ver=5)
35
36    mid = 2
37    publish1_packet = mosq_test.gen_publish("topic/one", qos=1, mid=mid, payload="message", proto_ver=5)
38    puback1_packet = mosq_test.gen_puback(mid, proto_ver=5, reason_code=mqtt5_rc.MQTT_RC_NOT_AUTHORIZED)
39
40    # Connect without a username, but have the plugin change it
41    props = mqtt5_props.gen_string_prop(mqtt5_props.PROP_AUTHENTICATION_METHOD, "change")
42    connect2_packet = mosq_test.gen_connect("client-params-test2", keepalive=42, proto_ver=5, properties=props)
43    props = mqtt5_props.gen_string_prop(mqtt5_props.PROP_AUTHENTICATION_METHOD, "change")
44    connack2_packet = mosq_test.gen_connack(rc=0, proto_ver=5, properties=props)
45
46    mid = 2
47    publish2s_packet = mosq_test.gen_publish("topic/one", qos=1, mid=mid, payload="message", proto_ver=5)
48    puback2s_packet = mosq_test.gen_puback(mid, proto_ver=5)
49
50    mid = 1
51    publish2r_packet = mosq_test.gen_publish("topic/one", qos=1, mid=mid, payload="message", proto_ver=5)
52
53    broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port)
54
55    try:
56        sock = mosq_test.do_client_connect(connect1_packet, connack1_packet, timeout=20, port=port)
57        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback1")
58        mosq_test.do_send_receive(sock, publish1_packet, puback1_packet, "puback1")
59        mosq_test.do_ping(sock)
60        sock.close()
61
62        sock = mosq_test.do_client_connect(connect2_packet, connack2_packet, timeout=20, port=port)
63        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback2")
64        mosq_test.do_send_receive(sock, publish2s_packet, puback2s_packet, "puback2")
65        if mosq_test.expect_packet(sock, "publish2", publish2r_packet):
66            mosq_test.do_ping(sock)
67            rc = 0
68
69        sock.close()
70
71    finally:
72        os.remove(conf_file)
73        os.remove(acl_file)
74        broker.terminate()
75        broker.wait()
76        (stdo, stde) = broker.communicate()
77        if rc:
78            print(stde.decode('utf-8'))
79            exit(rc)
80
81
82do_test("true")
83do_test("false")
84exit(0)
85