commit dee0cc108fa92952df1f0a246e9e86bb660f1211
author Philippe Antoine <p.antoine@catenacyber.fr> Mon Mar 26 10:29:56 2018 +0200
committer Andy Polyakov <appro@openssl.org> Tue Mar 27 20:03:15 2018 +0200
tree fa3bc04763ee2cb664f6b21aa1af3e058dfddb72
parent 242fcd695db6225ef98c5ad084e6f15ec5953158

statem/statem_clnt.c: omit redundant check in tls_construct_client_hello.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5729)

ssl/statem/statem_clnt.c

diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index 86cf5b6..e940fc8 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -11,6 +11,7 @@
 
 #include <stdio.h>
 #include <time.h>
+#include <assert.h>
 #include "../ssl_locl.h"
 #include "statem_locl.h"
 #include <openssl/buffer.h>
@@ -1198,14 +1199,14 @@
             sess_id_len = 0;
         }
     } else {
+        assert(s->session->session_id_length <= sizeof(s->session->session_id));
         sess_id_len = s->session->session_id_length;
         if (s->version == TLS1_3_VERSION) {
             s->tmp_session_id_len = sess_id_len;
             memcpy(s->tmp_session_id, s->session->session_id, sess_id_len);
         }
     }
-    if (sess_id_len > sizeof(s->session->session_id)
-            || !WPACKET_start_sub_packet_u8(pkt)
+    if (!WPACKET_start_sub_packet_u8(pkt)
             || (sess_id_len != 0 && !WPACKET_memcpy(pkt, session_id,
                                                     sess_id_len))
             || !WPACKET_close(pkt)) {