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modify the workaround

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Alexander Bersenev
2019-08-23 18:12:53 +05:00
parent 27f5d249a7
commit 4f8b1b16db
1 changed files with 3 additions and 1 deletions
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mtprotoproxy.py
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@@ -940,7 +940,9 @@ async def handle_fake_tls_handshake(handshake, reader, writer, peer):
timestamp = int.from_bytes(xored_digest[-4:], "little")
client_time_is_ok = TIME_SKEW_MIN < time.time() - timestamp < TIME_SKEW_MAX
if not client_time_is_ok and not is_time_skewed and timestamp != 0:
# some clients fail to read unix time and send the time since boot instead
client_time_is_small = timestamp < 60*60*24*1000
if not client_time_is_ok and not is_time_skewed and not client_time_is_small:
print_err("Client with time skew detected from %s, can be a replay-attack" % peer[0])
print_err("The clocks were %d minutes behind" % ((time.time() - timestamp) // 60))
continue