Kasper Brand came across a flaw in the current implementation when CRL

information - i.e.  SSLCARevocationFile/SSLCARevocationPath - is set 
on a per-vhost basis (don't know how much sense it makes to have 
non-global CRLs, but anyway...).

The attached patch (47B2B1A7.1060009@velox.ch on httpd-dev) addresses 
this issue, and it also improves the logging behavior for an SNI 
enabled configuration (previously some of the messages would 
always go to the first vhost, or wouldn't appear at
all, depending on the LogLevel of the first vhost).

reviewed: dirkx



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@627699 13f79535-47bb-0310-9956-ffa450edef68

modules/ssl/ssl_engine_kernel.c

@@ -2022,6 +2022,26 @@ static int ssl_find_vhost(void *servername, conn_rec *c, server_rec *s)
                            SSL_CTX_get_verify_callback(ssl->ctx));
         }
 
+        /*
+         * We also need to make sure that the correct mctx is
+         * assigned to the connection - the CRL callback e.g.
+         * makes use of it for retrieving its store (mctx->crl).
+         */
+        c->base_server = s;
+
+        /* Since logging in callbacks uses c->base_server in many
+         * cases, it also ensures that these messages are routed
+         * to the proper log.  And finally, there is one special
+         * filter callback, which is set very early depending on the
+         * base_server's log level. If this is not the first vhost
+         * we're now selecting (and the first vhost doesn't use
+         * APLOG_DEBUG), then we need to set that callback here.
+         */
+        if (c->base_server->loglevel >= APLOG_DEBUG) {
+            BIO_set_callback(SSL_get_rbio(ssl), ssl_io_data_cb);
+            BIO_set_callback_arg(SSL_get_rbio(ssl), (void *)ssl);
+        }
+
         return 1;
     }