A fix has been committed in the GnuTLS code base.

-------- Original Message -------- Subject: Re: (ITS#5361) cert verification failures with GnuTLS and DNS subjectAltName Date: Fri, 15 Feb 2008 23:11:32 +0200 From: Nikos Mavrogiannopoulos nmav@gnutls.org To: Howard Chu hyc@symas.com CC: Joe Orton joe@manyfish.co.uk, gnutls-devel@gnu.org References: 200802100917.m1A9HkSb015171@boole.openldap.org 200802152216.25025.nmav@gnutls.org 47B5F843.8080503@symas.com

On Friday 15 February 2008, Howard Chu wrote:

...

Anyway, does the attached patch solve your problem?

Not really. It still returns a size one byte larger than expected for the strings. Even in languages where NUL-terminated strings are the norm, the terminating byte is not included in the length.

The point is, we expect this API to return exactly the data that was in the certificate. If the caller wants to treat the data as a string, they can NUL-terminate it themselves. The manpage only says that the data will be returned, it does not say that it will be altered in any way.

Actually you are right. The return value shouldn't be increased (this also happens in the other similar functions). I've corrected the patch and commited at:

http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=4cc3c6b6ed00...

regards, Nikos