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Restrict topic hierarchy to 200 levels to prevent possible stack over…
…flow. Closes #1412. Thanks to Ryan Shaw.
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,36 @@ | ||
#!/usr/bin/env python3 | ||
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# Test whether a SUBSCRIBE to a topic with 65535 hierarchy characters fails | ||
# This needs checking with MOSQ_USE_VALGRIND=1 to detect memory failures | ||
# https://github.com/eclipse/mosquitto/issues/1412 | ||
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from mosq_test_helper import * | ||
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rc = 1 | ||
mid = 1 | ||
keepalive = 60 | ||
connect_packet = mosq_test.gen_connect("subscribe-long-test", keepalive=keepalive) | ||
connack_packet = mosq_test.gen_connack(rc=0) | ||
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subscribe_packet = mosq_test.gen_subscribe(mid, "/"*65535, 0) | ||
suback_packet = mosq_test.gen_suback(mid, 0) | ||
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port = mosq_test.get_port() | ||
broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port) | ||
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try: | ||
sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port) | ||
mosq_test.do_send_receive(sock, subscribe_packet, b"", "suback") | ||
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rc = 0 | ||
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sock.close() | ||
finally: | ||
broker.terminate() | ||
broker.wait() | ||
(stdo, stde) = broker.communicate() | ||
if rc: | ||
print(stde.decode('utf-8')) | ||
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exit(rc) | ||
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,37 @@ | ||
#!/usr/bin/env python3 | ||
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# Test whether a PUBLISH to a topic with 65535 hierarchy characters fails | ||
# This needs checking with MOSQ_USE_VALGRIND=1 to detect memory failures | ||
# https://github.com/eclipse/mosquitto/issues/1412 | ||
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from mosq_test_helper import * | ||
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rc = 1 | ||
mid = 19 | ||
keepalive = 60 | ||
connect_packet = mosq_test.gen_connect("pub-qos1-test", keepalive=keepalive) | ||
connack_packet = mosq_test.gen_connack(rc=0) | ||
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publish_packet = mosq_test.gen_publish("/"*65535, qos=1, mid=mid, payload="message") | ||
puback_packet = mosq_test.gen_puback(mid) | ||
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port = mosq_test.get_port() | ||
broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port) | ||
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try: | ||
sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port) | ||
mosq_test.do_send_receive(sock, publish_packet, puback_packet, "puback") | ||
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rc = 0 | ||
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sock.close() | ||
finally: | ||
broker.terminate() | ||
broker.wait() | ||
(stdo, stde) = broker.communicate() | ||
if rc: | ||
print(stde.decode('utf-8')) | ||
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exit(rc) | ||
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dceeb6f
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With the changes to
src/subs.c
you limit the length of aTopic Name
to 200, not just the number of hierarchy levels: