100 lines
4.0 KiB
Python
Executable File
100 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Test whether the broker handles malformed packets correctly - PUBLISH
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# MQTTv5
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from mosq_test_helper import *
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rc = 1
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def write_config(filename, port):
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with open(filename, 'w') as f:
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f.write("listener %d\n" % (port))
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f.write("allow_anonymous true\n")
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f.write("maximum_qos 1\n")
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f.write("retain_available false\n")
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def do_test(publish_packet, reason_code, error_string):
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global rc
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rc = 1
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keepalive = 10
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connect_packet = mosq_test.gen_connect("test", proto_ver=5, keepalive=keepalive)
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connack_props = mqtt5_props.gen_uint16_prop(mqtt5_props.PROP_TOPIC_ALIAS_MAXIMUM, 10)
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connack_props += mqtt5_props.gen_byte_prop(mqtt5_props.PROP_RETAIN_AVAILABLE, 0)
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connack_props += mqtt5_props.gen_uint16_prop(mqtt5_props.PROP_RECEIVE_MAXIMUM, 20)
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connack_props += mqtt5_props.gen_byte_prop(mqtt5_props.PROP_MAXIMUM_QOS, 1)
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connack_packet = mosq_test.gen_connack(rc=0, proto_ver=5, properties=connack_props, property_helper=False)
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mid = 0
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disconnect_packet = mosq_test.gen_disconnect(proto_ver=5, reason_code=reason_code)
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sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port)
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mosq_test.do_send_receive(sock, publish_packet, disconnect_packet, error_string=error_string)
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rc = 0
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port = mosq_test.get_port()
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conf_file = os.path.basename(__file__).replace('.py', '.conf')
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write_config(conf_file, port)
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broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port)
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try:
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# mid == 0
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publish_packet = mosq_test.gen_publish(topic="test/topic", qos=1, mid=0, proto_ver=5)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_PROTOCOL_ERROR, "mid == 0")
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# qos > 2
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publish_packet = mosq_test.gen_publish(topic="test/topic", qos=3, mid=1, proto_ver=5)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "qos > 2")
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# qos > maximum qos
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publish_packet = mosq_test.gen_publish(topic="test/topic", qos=2, mid=1, proto_ver=5)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_QOS_NOT_SUPPORTED, "qos > maximum qos")
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# retain not supported
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publish_packet = mosq_test.gen_publish(topic="test/topic", qos=0, retain=True, proto_ver=5, payload="a")
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do_test(publish_packet, mqtt5_rc.MQTT_RC_RETAIN_NOT_SUPPORTED, "retain not supported")
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# Incorrect property
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props = mqtt5_props.gen_uint32_prop(mqtt5_props.PROP_SESSION_EXPIRY_INTERVAL, 0)
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publish_packet = mosq_test.gen_publish(topic="test/topic", qos=1, mid=1, proto_ver=5, properties=props)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_PROTOCOL_ERROR, "Incorrect property")
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# Truncated packet, remaining length only
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publish_packet = struct.pack("!BB", 48, 0)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, remaining length only")
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# Truncated packet, empty topic
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publish_packet = struct.pack("!BBH", 48, 2, 0)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, empty topic")
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# Truncated packet, with topic, no properties
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publish_packet = struct.pack("!BBH1s", 48, 3, 1, b"a")
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with topic, no properties")
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# Truncated packet, with topic, no mid
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publish_packet = struct.pack("!BBH1s", 48+2, 3, 1, b"a")
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with topic, no mid")
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# Truncated packet, with topic, with mid, no properties
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publish_packet = struct.pack("!BBH1sH", 48+2, 5, 1, b"a", 1)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with topic, with mid, no properties")
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# Bad topic
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publish_packet = mosq_test.gen_publish(topic="#/test/topic", qos=1, mid=1, proto_ver=5)
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do_test(publish_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Bad topic")
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except mosq_test.TestError:
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pass
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finally:
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broker.terminate()
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broker.wait()
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(stdo, stde) = broker.communicate()
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os.remove(conf_file)
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if rc:
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print(stde.decode('utf-8'))
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exit(rc)
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