101 lines
4.5 KiB
Python
Executable File
101 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# Test whether the broker handles malformed packets correctly - SUBSCRIBE
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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 do_test(subscribe_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_packet = mosq_test.gen_connack(rc=0, proto_ver=5)
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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, subscribe_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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broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)
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try:
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# mid == 0
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=1, mid=0, proto_ver=5)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "mid == 0")
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# qos > 2
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=3, mid=1, proto_ver=5)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "qos > 2")
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# retain handling = 0x30
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=0x30, mid=1, proto_ver=5)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "retain handling = 0x30")
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# subscription options = 0xC0
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=0xC0, mid=1, proto_ver=5)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "subscription options = 0xC0")
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# command flags != 0x02
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=1, mid=1, proto_ver=5, cmd=128)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "command flags != 0x02")
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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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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=1, mid=1, proto_ver=5, properties=props)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Incorrect property")
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# Truncated packet, no mid
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subscribe_packet = struct.pack("!BB", 130, 0)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, no mid")
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# Truncated packet, no properties
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subscribe_packet = struct.pack("!BBH", 130, 2, 1)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, no properties")
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# Truncated packet, with properties field
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subscribe_packet = struct.pack("!BBHB", 130, 3, 1, 0)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with properties field")
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# Truncated packet, with properties field, empty topic
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subscribe_packet = struct.pack("!BBHBH", 130, 5, 1, 0, 0)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with properties field, empty topic")
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# Truncated packet, with properties field, empty topic, with qos
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subscribe_packet = struct.pack("!BBHBHB", 130, 6, 1, 0, 0, 1)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with properties field, empty topic, with qos")
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# Truncated packet, with properties field, with topic, no qos
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subscribe_packet = struct.pack("!BBHBH1s", 130, 6, 1, 0, 1, b"a")
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with properties field, with topic, no qos")
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# Truncated packet, with properties field, with 1st topic and qos ok, second topic ok, no second qos
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subscribe_packet = struct.pack("!BBHHH1sBH1s", 130, 10, 1, 0, 1, b"a", 0, 1, b"b")
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Truncated packet, with properties field, with 1st topic and qos ok, second topic ok, no second qos")
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# Bad topic
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subscribe_packet = mosq_test.gen_subscribe(topic="#/test/topic", qos=1, mid=1, proto_ver=5)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Bad topic")
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# Subscription ID set to 0
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props = mqtt5_props.gen_varint_prop(mqtt5_props.PROP_SUBSCRIPTION_IDENTIFIER, 0)
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subscribe_packet = mosq_test.gen_subscribe(topic="test/topic", qos=1, mid=1, proto_ver=5, properties=props)
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do_test(subscribe_packet, mqtt5_rc.MQTT_RC_MALFORMED_PACKET, "Subscription ID set to 0")
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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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if rc:
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print(stde.decode('utf-8'))
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exit(rc)
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