From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/bio/bf_null.c | 118 ++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/bio/bf_null.c

(limited to 'openssl-1.1.0h/crypto/bio/bf_null.c')

diff --git a/openssl-1.1.0h/crypto/bio/bf_null.c b/openssl-1.1.0h/crypto/bio/bf_null.c
new file mode 100644
index 0000000..6b86aa5
--- /dev/null
+++ b/openssl-1.1.0h/crypto/bio/bf_null.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * 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 "bio_lcl.h"
+#include "internal/cryptlib.h"
+
+/*
+ * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest
+ */
+
+static int nullf_write(BIO *h, const char *buf, int num);
+static int nullf_read(BIO *h, char *buf, int size);
+static int nullf_puts(BIO *h, const char *str);
+static int nullf_gets(BIO *h, char *str, int size);
+static long nullf_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static long nullf_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
+static const BIO_METHOD methods_nullf = {
+    BIO_TYPE_NULL_FILTER,
+    "NULL filter",
+    nullf_write,
+    nullf_read,
+    nullf_puts,
+    nullf_gets,
+    nullf_ctrl,
+    NULL,
+    NULL,
+    nullf_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_null(void)
+{
+    return (&methods_nullf);
+}
+
+static int nullf_read(BIO *b, char *out, int outl)
+{
+    int ret = 0;
+
+    if (out == NULL)
+        return (0);
+    if (b->next_bio == NULL)
+        return (0);
+    ret = BIO_read(b->next_bio, out, outl);
+    BIO_clear_retry_flags(b);
+    BIO_copy_next_retry(b);
+    return (ret);
+}
+
+static int nullf_write(BIO *b, const char *in, int inl)
+{
+    int ret = 0;
+
+    if ((in == NULL) || (inl <= 0))
+        return (0);
+    if (b->next_bio == NULL)
+        return (0);
+    ret = BIO_write(b->next_bio, in, inl);
+    BIO_clear_retry_flags(b);
+    BIO_copy_next_retry(b);
+    return (ret);
+}
+
+static long nullf_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+    long ret;
+
+    if (b->next_bio == NULL)
+        return (0);
+    switch (cmd) {
+    case BIO_C_DO_STATE_MACHINE:
+        BIO_clear_retry_flags(b);
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+        BIO_copy_next_retry(b);
+        break;
+    case BIO_CTRL_DUP:
+        ret = 0L;
+        break;
+    default:
+        ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+    }
+    return (ret);
+}
+
+static long nullf_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+    long ret = 1;
+
+    if (b->next_bio == NULL)
+        return (0);
+    switch (cmd) {
+    default:
+        ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
+        break;
+    }
+    return (ret);
+}
+
+static int nullf_gets(BIO *bp, char *buf, int size)
+{
+    if (bp->next_bio == NULL)
+        return (0);
+    return (BIO_gets(bp->next_bio, buf, size));
+}
+
+static int nullf_puts(BIO *bp, const char *str)
+{
+    if (bp->next_bio == NULL)
+        return (0);
+    return (BIO_puts(bp->next_bio, str));
+}
-- 
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