From 436e65acc99b80f49f517ea1db65e1592ecda8f8 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Tue, 14 Sep 2021 07:28:09 +0200
Subject: [PATCH] Use BIO_read_ex only with OpenSSL >= 1.1.1

---
 winpr/tools/makecert/makecert.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/winpr/tools/makecert/makecert.c b/winpr/tools/makecert/makecert.c
index 165694849..77f8398a2 100644
--- a/winpr/tools/makecert/makecert.c
+++ b/winpr/tools/makecert/makecert.c
@@ -100,9 +100,13 @@ static char* makecert_read_str(BIO* bio, size_t* pOffset)
 
 		length = new_len;
 		x509_str = new_str;
+#if OPENSSL_VERSION_NUMBER >= 0x10101000L
 		status = BIO_read_ex(bio, &x509_str[offset], length - offset, &readBytes);
-
-		if (status < 0)
+#else
+		status = BIO_read(bio, &x509_str[offset], length - offset);
+		readBytes = status;
+#endif
+		if (status <= 0)
 			break;
 
 		offset += (size_t)readBytes;