From 27c3a70e1321bf866e394ff4363db5bca4c7bd6a Mon Sep 17 00:00:00 2001
From: Sean Parkinson <sean@wolfssl.com>
Date: Tue, 1 May 2018 15:19:18 +1000
Subject: [PATCH] Allow building TLS 1.3 at draft 26

---
 configure.ac       | 15 ++++++++++++++-
 wolfssl/internal.h |  2 ++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c55936f83..c96e5ce2a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -326,6 +326,18 @@ then
 fi
 
 
+# TLS v1.3 Draft 26
+AC_ARG_ENABLE([tls13-draft26],
+    [AS_HELP_STRING([--enable-tls13-draft26],[Enable wolfSSL TLS v1.3 Draft 26 (default: disabled)])],
+    [ ENABLED_TLS13_DRAFT26=$enableval ],
+    [ ENABLED_TLS13_DRAFT26=no ]
+    )
+if test "$ENABLED_TLS13_DRAFT26" = "yes"
+then
+  AM_CFLAGS="-DWOLFSSL_TLS13_DRAFT_26 $AM_CFLAGS"
+fi
+
+
 # TLS v1.3
 AC_ARG_ENABLE([tls13],
     [AS_HELP_STRING([--enable-tls13],[Enable wolfSSL TLS v1.3 (default: disabled)])],
@@ -333,7 +345,7 @@ AC_ARG_ENABLE([tls13],
     [ ENABLED_TLS13=no ]
     )
 
-if test "$ENABLED_TLS13_DRAFT18" = "yes" || test "$ENABLED_TLS13_DRAFT22" = "yes" || test "$ENABLED_TLS13_DRAFT23" = "yes"
+if test "$ENABLED_TLS13_DRAFT18" = "yes" || test "$ENABLED_TLS13_DRAFT22" = "yes" || test "$ENABLED_TLS13_DRAFT23" = "yes" || test "$ENABLED_TLS13_DRAFT26" = "yes"
 then
     ENABLED_TLS13="yes"
 fi
@@ -4409,6 +4421,7 @@ echo "   * TLS v1.3:                   $ENABLED_TLS13"
 echo "   * TLS v1.3 Draft 18:          $ENABLED_TLS13_DRAFT18"
 echo "   * TLS v1.3 Draft 22:          $ENABLED_TLS13_DRAFT22"
 echo "   * TLS v1.3 Draft 23:          $ENABLED_TLS13_DRAFT23"
+echo "   * TLS v1.3 Draft 26:          $ENABLED_TLS13_DRAFT26"
 echo "   * Post-handshake Auth:        $ENABLED_TLS13_POST_AUTH"
 echo "   * Early Data:                 $ENABLED_TLS13_EARLY_DATA"
 echo "   * Send State in HRR Cookie:   $ENABLED_SEND_HRR_COOKIE"
diff --git a/wolfssl/internal.h b/wolfssl/internal.h
index 8abcd899f..8c41a5893 100644
--- a/wolfssl/internal.h
+++ b/wolfssl/internal.h
@@ -1039,6 +1039,8 @@ enum Misc {
     TLS_DRAFT_MINOR = 0x16,     /* Minor version number of TLS draft */
 #elif defined(WOLFSSL_TLS13_DRAFT_23)
     TLS_DRAFT_MINOR = 0x17,     /* Minor version number of TLS draft */
+#elif defined(WOLFSSL_TLS13_DRAFT_26)
+    TLS_DRAFT_MINOR = 0x1a,     /* Minor version number of TLS draft */
 #else
     TLS_DRAFT_MINOR = 0x1c,     /* Minor version number of TLS draft */
 #endif