Handing of segmented TLS data

[James Macdonell]

For whatever reason, Amazon SES SMTP relays are sending the MAIL FROM: as two SSL /TLS segments within one packet: one segment with M and the other with AIL FROM: ....... Piler doesn't seem to be able to reassemble and only sees the last segment and then throws a invalid command: *AIL FROM:*

Some wireshark dissection attached.

[Janos SUTO]

That's a nasty one. I can't imagine why an smtp client would send a single byte as the command, then the rest in another packet. Anyway, I've started to refactor session.c to make the fix possible. I'll let you know when you can test it.

[Janos SUTO]

OK, I've refactored heavily the smtp modul. Please download the master branch, recompile, and test it. Let me know how it works.

[James Macdonell]

A lot of work on those commits! It did the trick, though. Thank you.

Dec  3 16:26:37 mailarchiver piler[20612]: connection from 54.240.13.5
Dec  3 16:26:38 mailarchiver piler[20612]: 40000000...: from=[e-mail], size=3022/1712, attachments=0, reference=, message-id=<[e-mail]>, retention=180, folder=0, delay=0.06, delays=0.06/0.00/0.00/0.00/0.00/0.00, status=stored

MariaDB [piler]> select metadata.from,FROM_UNIXTIME(arrived) from metadata where piler_id = '40000000...';
+-------------------------+------------------------+
| from                    | FROM_UNIXTIME(arrived) |
+-------------------------+------------------------+
| [e-mail] | 2015-12-03 16:26:37    |
+-------------------------+------------------------+