Add certificate callback. If set this is called whenever a certificate
is required by client or server. An application can decide which
certificate chain to present based on arbitrary criteria: for example
supported signature algorithms. Add very simple example to s_server.
This fixes many of the problems and restrictions of the existing client
certificate callback: for example you can now clear existing certificates
and specify the whole chain.
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index c51f3d0..8d7bcfe 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -3180,6 +3180,13 @@
if (s->state == SSL3_ST_CW_CERT_A)
{
+ /* Let cert callback update client certificates if required */
+ if (s->cert->cert_cb
+ && s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
+ {
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
+ return 0;
+ }
if (ssl3_check_client_certificate(s))
s->state=SSL3_ST_CW_CERT_C;
else
