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starttls: Clear unencrypted commands from buffer #380

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merged 2 commits into from
May 18, 2024
Merged

starttls: Clear unencrypted commands from buffer #380

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8c31694
starttls: Clear unencrypted commands from buffer
Arusekk Jul 9, 2023
96b5ca2
Update aiosmtpd/smtp.py
Dreamsorcerer May 18, 2024
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4 changes: 4 additions & 0 deletions aiosmtpd/docs/NEWS.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,10 @@

.. towncrier release notes start
1.4.6 (2024-05-06)
==================

* STARTTLS is now fully enforced if used.

1.4.5 (2024-03-02)
==================
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3 changes: 3 additions & 0 deletions aiosmtpd/smtp.py
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Expand Up @@ -504,6 +504,9 @@ def connection_made(self, transport: asyncio.BaseTransport) -> None:
self._reader._transport = transport # type: ignore[attr-defined]
self._writer._transport = transport # type: ignore[attr-defined]
self.transport = transport
# Discard any leftover unencrypted data
# See https://tools.ietf.org/html/rfc3207#page-7
self._reader._buffer.clear() # type: ignore[attr-defined]
# Do SSL certificate checking as rfc3207 part 4.1 says. Why is
# _extra a protected attribute?
assert self._tls_protocol is not None
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