zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bf_null.c b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bf_null.c
new file mode 100644
index 0000000..48c6be6
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bf_null.c
@@ -0,0 +1,122 @@
+/*
+ * 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_local.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",
+ /* TODO: Convert to new style write function */
+ bwrite_conv,
+ nullf_write,
+ /* TODO: Convert to new style read function */
+ bread_conv,
+ 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);
+}