On 2009-10-17 Fabio Muzzi <kur...@kurgan.org> wrote: > Andreas Metzler wrote:
>> How is dovecot configured? (Ldap, sql, plain files, pam)? I cannot
>> reproduce the crash here with passdb lookup. Do you use some fancy nss
>> helper (ldap)?
> Dovecot authenticates on plain text files.
> You'll find attached the Dovecot config file, an example plain text
> password file, and also the complete exim4.conf file. (I run exim with a
> personalized configuration file that is made of a single exim4.conf file)
> Dovecot authenticates on files that are in /etc/vmail/users/<domainname>
> Exim in this config uses two file-based authenticators (plain and login)
> and a CRAM-MD5 authenticator that uses dovecot. It is a test setup,
> where the two file-based authenticators work, and the dovecot-based one
> crashes. I have tried setting up all authenticators in Exim to run with
> the dovecot driver, and all of them crash. If I set them all up to be
> file-based, they all work.
> The same exact configuration works properly on another server (same
> Debian version) and crashes on a third one.
Hello,
thanks for the files. The crucial point seems to be that you have
configured dovecot to support *many* auth methods which triggers the
bug.
This simple patch fixes it for me:
----------------------------------
diff -NurbBp exim/src/auths/dovecot.c exim.new/src/auths/dovecot.c
--- exim/src/auths/dovecot.c 2007-03-01 15:06:56.000000000 +0100
+++ exim.new/src/auths/dovecot.c 2009-10-18 10:11:32.000000000 +0200
@@ -131,6 +131,7 @@ for (;;)
{
sbp = read(fd, sbuffer, sizeof(sbuffer));
if (sbp == 0) { if (count == 0) return NULL; else break; }
+ p = 0;
}
while (p < sbp)
----------------------------------
For your convenience I have built amd64 binary package and uploaded it
to my webspace
http://www.bebt.de/debian/misc/exim4-daemon-heavy_4.69-9.test.1_amd64.deb
ametz...@tmp$ sha1sum exim4-daemon-heavy_4.69-9.test.1_amd64.deb
805d45af492d0647a05e19c998bb21e0d44cd9c3
exim4-daemon-heavy_4.69-9.test.1_amd64.deb
ametz...@tmp$ md5sum exim4-daemon-heavy_4.69-9.test.1_amd64.deb
aa4aea3fc1212025a8521af0eb086c2e exim4-daemon-heavy_4.69-9.test.1_amd64.deb
Could check whether this fixes the issue for you?
thanks, cu andreas
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so grateful to you.'
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