Having problem on wpa_supplicant with EAP-TTLS

Jouni Malinen jkmaline
Fri Aug 11 07:05:57 PDT 2006

On Fri, Aug 11, 2006 at 10:40:54AM +0200, Paul-Henri Gauzence de Lastours wrote:

> - in the *eap_tls_common* file, in the function *eap_tls_process_helper*,
> the function *tls_connection_handshake *is never called, because *
> eap_tls_data_reassemble* returns a NULL, and so, we quit *
> eap_tls_process_helper*. I tried to force the call of *eap_tls_handshake* by
> commenting out the test on msg value. Then, the *client hello* message was
> correctly sent, but then, there were lots and lots of strange characters on
> debug output, and the authentication failed. But the *Client_hello* and *
> Response_EAP-TTLS* packets were correctly sent.
> So it seems that OpenSSL is correctly working, and that the problem comes
> from *eap_tls_data_reassemble*. I'm continuing to work on that, but would
> you have any idea of what could provok getting a NULL from this function ?

I would suggest testing with the current 0.5.x development tree. My
first guess would be that uclibc is returning NULL from malloc(0) call
on your target system. 0.4.8 has "data->tls_in = malloc(in_len)" in this
function whereas this has been changed to "data->tls_in = malloc(in_len
? in_len : 1)" in 0.5.x branch.

Jouni Malinen                                            PGP id EFC895FA

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