Detect OpenSSL errors

I want to detect detail openSSL client certificate error after call SSL_accept(). This can be found from the reason:
Unknown Client CA: SSL_R_TLSV1_ALERT_UNKNOWN_CA
No Client Certificate: SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE
Certificate expired:   SSL_R_NO_CERTIFICATE_RETURNED

The interesting is when client certificate is expired, it did not return SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED, instead, it returns SSL_R_NO_CERTIFICATE_RETURNED.