Re: [fetchmail-devel] [BUG] fetchmail hangs during pop3 pull after a mail with a null char

[David G. <da...@dg...>]

many moons ago (8 Nov 04) Matthias Andree wrote:

>David Greaves <da...@dg...> writes:
>
>  
>
>>Summary : fetchmail hangs during pop3 pull after a mail with a null
>>char.
>>    
>>
>
>Can you try the tarball from
>http://home.pages.de/~mandree/tmp/fetchmail-6.2.6.tar.bz2 and see if the
>problem persists? There have been several bugfixes since 6.2.5, the
>noteworthy documented at http://decoy.wox.org/svn/fetchmail/trunk/NEWS -
>just to make sure we aren't chasing a bug that's already fixed?
>
>NOTE the tarball there isn't the final 6.2.6 release tarball but a
>preliminary snapshot and may see further changes before being released
>as 6.2.6.
>
>Thanks in advance.
>  
>
Hi again Matthias :)

This was the reason I was upgrading to 6.2.5.991
I've included my original message in case you don't have a copy to hand.

I have a message in my pop queue with a null char in it (which is what 
triggers this).

There's a log below.

I can work around the problem if I "expunge 1" - but that's nasty.

As I said in my original message, I think it was sink.c calling smtp_ok 
- have you any suggestions as to where/how to debug this?

David

log:
# /usr/bin/fetchmail -N -v -v --nosyslog -f /etc/fetchmailrc
fetchmail: starting fetchmail 6.2.5.991 daemon
fetchmail: 6.2.5.991 querying pop3.ukfsn.org (protocol POP3) at Wed 23 
Mar 2005 11:57:08 AM GMT: poll started
fetchmail: POP3< +OK <ce2...@po...>
fetchmail: POP3> CAPA
fetchmail: POP3< +OK Capability list follows
fetchmail: POP3< PIPELINING
fetchmail: POP3< TOP
fetchmail: POP3< USER
fetchmail: POP3< UIDL
fetchmail: POP3< STLS
fetchmail: POP3< .
fetchmail: POP3> USER dgreaves
fetchmail: POP3< +OK Tell me your password.
fetchmail: POP3> PASS *
fetchmail: POP3< +OK Welcome aboard! You have 22 messages.
fetchmail: selecting or re-polling default folder
fetchmail: POP3> STAT
fetchmail: POP3< +OK 22 105420
22 messages for dgreaves at pop3.ukfsn.org (105420 octets).
fetchmail: POP3> LIST 1
fetchmail: POP3< +OK 1 3982
fetchmail: POP3> RETR 1
fetchmail: POP3< +OK Message follows

<snip some good pop'ing>

fetchmail: LMTP< 250 2.1.5 Ok
 flushed
fetchmail: POP3> DELE 2
fetchmail: POP3< +OK Done.
fetchmail: POP3> LIST 3
fetchmail: POP3< +OK 3 2852
fetchmail: POP3> RETR 3
fetchmail: POP3< +OK Message follows
reading message dgr...@po...:3 of 22 (2852 octets)
About to rewrite Return-Path: <ca...@ab...>
Rewritten version is Return-Path: <ca...@ab...>

About to rewrite From: Susan M.Taylor <ca...@ab...>
Rewritten version is From: Susan M.Taylor <ca...@ab...>

About to rewrite To: 64....@dg...
Rewritten version is To: 64....@dg...

fetchmail: forwarding to /var/imap/socket/lmtp
fetchmail: LMTP> MAIL FROM:<ca...@ab...> SIZE=2852
fetchmail: LMTP< 250 2.1.0 ok
fetchmail: LMTP> RCPT TO:<da...@dg...>
fetchmail: LMTP< 250 2.1.5 ok
fetchmail: LMTP> DATA
fetchmail: LMTP< 354 go ahead
#******************************************.**************************fetchmail: 
message dgr...@po...:3 was not the expected length (2947 
actual != 2852 expected)
fetchmail: LMTP>. (EOM)
fetchmail: LMTP< 554 5.6.0 Message contains NUL characters
fetchmail: SMTP< 220 willow.dgreaves.com ESMTP Exim 4.20 Wed, 23 Mar 
2005 11:57:11 +0000
fetchmail: SMTP> HELO localhost
fetchmail: SMTP< 250 willow.dgreaves.com Hello 
[IbwiAqeOpcFJkOALoy6jCLP6WNxrOhWp] at localhost.localdomain [127.0.0.1]
fetchmail: SMTP> MAIL FROM:<>
fetchmail: SMTP< 250 OK
fetchmail: SMTP> RCPT TO:<da...@dg...>
fetchmail: SMTP< 250 Accepted
fetchmail: SMTP> DATA
fetchmail: SMTP< 354 Enter message, ending with "." on a line by itself
fetchmail: SMTP: (bounce-message body)
fetchmail: SMTP>. (EOM)
fetchmail: SMTP< 250 OK id=1DE4U3-0008M5-Lv
fetchmail: SMTP> QUIT
fetchmail: SMTP< 221 willow.dgreaves.com closing connection
 flushed
fetchmail: POP3> DELE 3
fetchmail: POP3< +OK Done.
fetchmail: POP3> LIST 4
fetchmail: POP3< +OK 4 3583
fetchmail: POP3> RETR 4
fetchmail: POP3< +OK Message follows
reading message dgr...@po...:4 of 22 (3583 octets)
About to rewrite Return-Path: <co...@gu...>
Rewritten version is Return-Path: <co...@gu...>

About to rewrite From: Colin Guthrie <co...@gu...>
Rewritten version is From: Colin Guthrie <co...@gu...>

About to rewrite To: David Greaves <da...@dg...>
Rewritten version is To: David Greaves <da...@dg...>

fetchmail: forwarding to /var/imap/socket/lmtp
fetchmail: SMTP> MAIL FROM:<co...@gu...> BODY=7BIT SIZE=3583
fetchmail: SMTP< 250 2.1.0 ok
fetchmail: SMTP> RCPT TO:<da...@dg...>
fetchmail: SMTP< 250 2.1.5 ok
fetchmail: SMTP> DATA
fetchmail: SMTP< 354 go ahead
#******************************.******************************fetchmail: 
message dgr...@po...:4 was not the expected length (3678 
actual != 3583 expected)
fetchmail: SMTP>. (EOM)
fetchmail: SMTP< 250 2.1.5 Ok
 
<at this point fetchmail hangs...>

fetchmail: smtp listener protocol error
 not flushed
fetchmail: POP3> LIST 5

<and the server go bored of waiting>

fetchmail: POP3< -ERR Client has been idle for too long.
fetchmail: Client has been idle for too long.
fetchmail: POP3> QUIT
fetchmail: client/server protocol error while fetching from pop3.ukfsn.org