Fix no-blake2

[openssl.git] / crypto / evp / bio_b64.c

diff --git a/crypto/evp/bio_b64.c b/crypto/evp/bio_b64.c
index cade6f8f95d88ff2e2564d0e8548a77b18fcf003..aef9a85459b3a0b45ab1c5a4f35d48bafccefa7e 100644 (file)
--- a/crypto/evp/bio_b64.c
+++ b/crypto/evp/bio_b64.c
@@ -1,7 +1,7 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -70,9 +70,10 @@ static int b64_new(BIO *bi)
 {
     BIO_B64_CTX *ctx;
 
-    ctx = OPENSSL_zalloc(sizeof(*ctx));
-    if (ctx == NULL)
+    if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) {
+        EVPerr(EVP_F_B64_NEW, ERR_R_MALLOC_FAILURE);
         return 0;
+    }
 
     ctx->cont = 1;
     ctx->start = 1;
@@ -289,6 +290,14 @@ static int b64_read(BIO *b, char *out, int outl)
                                  (unsigned char *)ctx->tmp, i);
             ctx->tmp_len = 0;
         }
+        /*
+         * If eof or an error was signalled, then the condition
+         * 'ctx->cont <= 0' will prevent b64_read() from reading
+         * more data on subsequent calls. This assignment was
+         * deleted accidentally in commit 5562cfaca4f3.
+         */
+        ctx->cont = i;
+
         ctx->buf_off = 0;
         if (i < 0) {
             ret_code = 0;