Implement pending for TLSv1.3.

Makes `openssl s_client -peekaboo` work with TLSv1.3.

ok beck@ tb@

1 files changed, 17 insertions, 1 deletions

diff --git a/src/lib/libssl/tls13_lib.c b/src/lib/libssl/tls13_lib.c
index 727f617471..de3e840a84 100644
--- a/src/lib/libssl/tls13_lib.c
+++ b/src/lib/libssl/tls13_lib.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: tls13_lib.c,v 1.22 2020/01/23 02:49:38 jsing Exp $ */
+/*      $OpenBSD: tls13_lib.c,v 1.23 2020/01/23 05:08:30 jsing Exp $ */
 /*
  * Copyright (c) 2018, 2019 Joel Sing <jsing@openbsd.org>
  * Copyright (c) 2019 Bob Beck <beck@openbsd.org>
@@ -411,6 +411,22 @@ tls13_legacy_return_code(SSL *ssl, ssize_t ret)
 }
 
 int
+tls13_legacy_pending(const SSL *ssl)
+{
+        struct tls13_ctx *ctx = ssl->internal->tls13;
+        ssize_t ret;
+
+        if (ctx == NULL)
+                return 0;
+
+        ret = tls13_pending_application_data(ctx->rl);
+        if (ret < 0 || ret > INT_MAX)
+                return 0;
+
+        return ret;
+}
+
+int
 tls13_legacy_read_bytes(SSL *ssl, int type, unsigned char *buf, int len, int peek)
 {
         struct tls13_ctx *ctx = ssl->internal->tls13;