mosquitto/test/broker/01-connect-uname-invalid-utf8.py

#!/usr/bin/env python3

# Test whether a username with invalid UTF-8 fails.

from mosq_test_helper import *

def do_test(proto_ver):
    rc = 1
    keepalive = 60
    connect_packet = mosq_test.gen_connect("connect-invalid-utf8", keepalive=keepalive, username="invalid/utf8", proto_ver=proto_ver)
    b = list(struct.unpack("B"*len(connect_packet), connect_packet))
    b[43] = 0 # Username should never have a 0x0000
    connect_packet = struct.pack("B"*len(b), *b)

    port = mosq_test.get_port()
    broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)

    try:
        time.sleep(0.5)

        sock = mosq_test.do_client_connect(connect_packet, b"", port=port)
        # Exception occurs if connack packet returned
        rc = 0
        sock.close()
    finally:
        broker.terminate()
        broker.wait()
        (stdo, stde) = broker.communicate()
        if rc:
            print(stde.decode('utf-8'))
            print("proto_ver=%d" % (proto_ver))
            exit(rc)


do_test(proto_ver=4)
do_test(proto_ver=5)
exit(0)