Import OpenSSL 1.1.0f

crypto/bio/bf_nbio.c

@@ -1,66 +1,17 @@
-/* crypto/bio/bf_nbio.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (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
  */
 
 #include <stdio.h>
 #include <errno.h>
-#include "cryptlib.h"
+#include "bio_lcl.h"
+#include "internal/cryptlib.h"
 #include <openssl/rand.h>
-#include <openssl/bio.h>
 
 /*
  * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest
@@ -80,7 +31,7 @@ typedef struct nbio_test_st {
     int lwn;
 } NBIO_TEST;
 
-static BIO_METHOD methods_nbiof = {
+static const BIO_METHOD methods_nbiof = {
     BIO_TYPE_NBIO_TEST,
     "non-blocking IO test filter",
     nbiof_write,
@@ -93,7 +44,7 @@ static BIO_METHOD methods_nbiof = {
     nbiof_callback_ctrl,
 };
 
-BIO_METHOD *BIO_f_nbio_test(void)
+const BIO_METHOD *BIO_f_nbio_test(void)
 {
     return (&methods_nbiof);
 }
@@ -102,13 +53,12 @@ static int nbiof_new(BIO *bi)
 {
     NBIO_TEST *nt;
 
-    if (!(nt = (NBIO_TEST *)OPENSSL_malloc(sizeof(NBIO_TEST))))
+    if ((nt = OPENSSL_zalloc(sizeof(*nt))) == NULL)
         return (0);
     nt->lrn = -1;
     nt->lwn = -1;
     bi->ptr = (char *)nt;
     bi->init = 1;
-    bi->flags = 0;
     return (1);
 }
 
@@ -116,8 +66,7 @@ static int nbiof_free(BIO *a)
 {
     if (a == NULL)
         return (0);
-    if (a->ptr != NULL)
-        OPENSSL_free(a->ptr);
+    OPENSSL_free(a->ptr);
     a->ptr = NULL;
     a->init = 0;
     a->flags = 0;
@@ -127,10 +76,8 @@ static int nbiof_free(BIO *a)
 static int nbiof_read(BIO *b, char *out, int outl)
 {
     int ret = 0;
-#if 1
     int num;
     unsigned char n;
-#endif
 
     if (out == NULL)
         return (0);
@@ -138,7 +85,6 @@ static int nbiof_read(BIO *b, char *out, int outl)
         return (0);
 
     BIO_clear_retry_flags(b);
-#if 1
     if (RAND_bytes(&n, 1) <= 0)
         return -1;
     num = (n & 0x07);
@@ -149,9 +95,7 @@ static int nbiof_read(BIO *b, char *out, int outl)
     if (num == 0) {
         ret = -1;
         BIO_set_retry_read(b);
-    } else
-#endif
-    {
+    } else {
         ret = BIO_read(b->next_bio, out, outl);
         if (ret < 0)
             BIO_copy_next_retry(b);
@@ -174,7 +118,6 @@ static int nbiof_write(BIO *b, const char *in, int inl)
 
     BIO_clear_retry_flags(b);
 
-#if 1
     if (nt->lwn > 0) {
         num = nt->lwn;
         nt->lwn = 0;
@@ -190,9 +133,7 @@ static int nbiof_write(BIO *b, const char *in, int inl)
     if (num == 0) {
         ret = -1;
         BIO_set_retry_write(b);
-    } else
-#endif
-    {
+    } else {
         ret = BIO_write(b->next_bio, in, inl);
         if (ret < 0) {
             BIO_copy_next_retry(b);