PR: 1794
[openssl.git] / ssl / s3_srvr.c
index f17afaf..1f7bf46 100644 (file)
@@ -339,23 +339,33 @@ int ssl3_accept(SSL *s)
                case SSL3_ST_SR_CLNT_HELLO_B:
                case SSL3_ST_SR_CLNT_HELLO_C:
 
-                       s->shutdown=0;
-                       ret=ssl3_get_client_hello(s);
-                       if (ret <= 0) goto end;
+                       if (s->rwstate != SSL_X509_LOOKUP)
+                       {
+                               ret=ssl3_get_client_hello(s);
+                               if (ret <= 0) goto end;
+                       }
 #ifndef OPENSSL_NO_SRP
                        {
                        int al;
-
-                       if ((ret = ssl_check_srp_ext_ClientHello(s,&al)) != SSL_ERROR_NONE)
-                               {
-                               ssl3_send_alert(s,SSL3_AL_FATAL,al);                            
-                               SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_CLIENTHELLO_TLSEXT);                     
+                       if ((ret = ssl_check_srp_ext_ClientHello(s,&al))  < 0)
+                                       {
+                                       /* callback indicates firther work to be done */
+                                       s->rwstate=SSL_X509_LOOKUP;
+                                       goto end;
+                                       }
+                       if (ret != SSL_ERROR_NONE)
+                               {
+                               ssl3_send_alert(s,SSL3_AL_FATAL,al);    
+                               /* This is not really an error but the only means to
+                                   for a client to detect whether srp is supported. */
+                                  if (al != TLS1_AD_UNKNOWN_PSK_IDENTITY)      
+                                       SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_CLIENTHELLO_TLSEXT);                     
                                ret = SSL_TLSEXT_ERR_ALERT_FATAL;                       
                                ret= -1;
                                goto end;       
-                               }
+                               }
                        }
-#endif
+#endif         
                        
                        s->renegotiate = 2;
                        s->state=SSL3_ST_SW_SRVR_HELLO_A;