From da51ddee81e10398172f0baf3327b5db82846175 Mon Sep 17 00:00:00 2001
From: Bernard Spil <brnrd@FreeBSD.org>
Date: Mon, 2 Apr 2018 19:04:06 +0200
Subject: [PATCH] openssl: fix build with LibreSSL 2.7

 - LibreSSL 2.7 implements (most of) OpenSSL 1.1 API

Fixes #2319
Closes #2447
Closes #2448

Signed-off-by: Bernard Spil <brnrd@FreeBSD.org>
---
 lib/vtls/openssl.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c
index 2a6b3cfac..bbb8ec766 100644
--- a/lib/vtls/openssl.c
+++ b/lib/vtls/openssl.c
@@ -104,7 +104,8 @@
 #endif
 
 #if (OPENSSL_VERSION_NUMBER >= 0x10100000L) && /* OpenSSL 1.1.0+ */ \
-  !defined(LIBRESSL_VERSION_NUMBER)
+    !(defined(LIBRESSL_VERSION_NUMBER) && \
+      LIBRESSL_VERSION_NUMBER < 0x20700000L)
 #define SSLEAY_VERSION_NUMBER OPENSSL_VERSION_NUMBER
 #define HAVE_X509_GET0_EXTENSIONS 1 /* added in 1.1.0 -pre1 */
 #define HAVE_OPAQUE_EVP_PKEY 1 /* since 1.1.0 -pre3 */
@@ -128,7 +129,8 @@ static unsigned long OpenSSL_version_num(void)
 #endif
 
 #if (OPENSSL_VERSION_NUMBER >= 0x1000200fL) && /* 1.0.2 or later */ \
-  !defined(LIBRESSL_VERSION_NUMBER)
+    !(defined(LIBRESSL_VERSION_NUMBER) && \
+      LIBRESSL_VERSION_NUMBER < 0x20700000L)
 #define HAVE_X509_GET0_SIGNATURE 1
 #endif
 
@@ -147,7 +149,7 @@ static unsigned long OpenSSL_version_num(void)
  * Whether SSL_CTX_set_keylog_callback is available.
  * OpenSSL: supported since 1.1.1 https://github.com/openssl/openssl/pull/2287
  * BoringSSL: supported since d28f59c27bac (committed 2015-11-19)
- * LibreSSL: unsupported in at least 2.5.1 (explicitly check for it since it
+ * LibreSSL: unsupported in at least 2.7.2 (explicitly check for it since it
  *           lies and pretends to be OpenSSL 2.0.0).
  */
 #if (OPENSSL_VERSION_NUMBER >= 0x10101000L && \
@@ -259,7 +261,9 @@ static void tap_ssl_key(const SSL *ssl, ssl_tap_state_t *state)
   if(!session || !keylog_file_fp)
     return;
 
-#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && \
+    !(defined(LIBRESSL_VERSION_NUMBER) && \
+      LIBRESSL_VERSION_NUMBER < 0x20700000L)
   /* ssl->s3 is not checked in openssl 1.1.0-pre6, but let's assume that
    * we have a valid SSL context if we have a non-NULL session. */
   SSL_get_client_random(ssl, client_random, SSL3_RANDOM_SIZE);
@@ -2082,8 +2086,7 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   case CURL_SSLVERSION_TLSv1_2:
   case CURL_SSLVERSION_TLSv1_3:
     /* it will be handled later with the context options */
-#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) && \
-    !defined(LIBRESSL_VERSION_NUMBER)
+#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
     req_method = TLS_client_method();
 #else
     req_method = SSLv23_client_method();