Symbol conflict between libgnutls-openssl and real openssl
n.mavrogiannopoulos at gmail.com
Wed Aug 27 17:58:04 CEST 2008
On Wed, Aug 27, 2008 at 6:34 PM, Simon Josefsson <simon at josefsson.org> wrote:
>> The nss_ldap links to openldap libraries which is itself linked to the
>> real OpenSSL libraries. Some symbols are then resolved from real OpenSSL
>> and some from libgnutls-openssl which causes crashes because they are of
>> course ABI incompatible.
>> The proposal is to use #defines in the public headers of
>> gnutls/openssl.h to rename the symbols so they do not clash with real
>> OpenSSL. It would of course require SONAME bump of libgnutls-openssl and
>> rebuild of the dependent applications.
>> What do you think about this proposal?
> I like it. gnutls/openssl.h should thus contain a set of #define's such
> #define MD5_Init gnutls_openssl_MD5_Init
> Fortunately we have never guaranteed binary level compatibility with
> OpenSSL, so this change does not require any API changes in applications
> that uses libgnutls-openssl, just a recompile. It will indeed require a
> SONAME bump, and currently both libgnutls and libgnutls-openssl share
> the same SONAME version. We have discussed before if and how these
> versions can be separated. I suspect we have to make a decision now.
I think this is too much fuss. The gnutls-openssl layer is quick and
dirty fix. I wouldn't recommend to any applications to use it. Either
use openssl or gnutls directly. If you have this issue why not
recompile the application with openssl instead?
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