zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_null.c b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_null.c
new file mode 100644
index 0000000..e73ce78
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/bio/bss_null.c
@@ -0,0 +1,87 @@
+/*
+ * 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"
+
+static int null_write(BIO *h, const char *buf, int num);
+static int null_read(BIO *h, char *buf, int size);
+static int null_puts(BIO *h, const char *str);
+static int null_gets(BIO *h, char *str, int size);
+static long null_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static const BIO_METHOD null_method = {
+ BIO_TYPE_NULL,
+ "NULL",
+ /* TODO: Convert to new style write function */
+ bwrite_conv,
+ null_write,
+ /* TODO: Convert to new style read function */
+ bread_conv,
+ null_read,
+ null_puts,
+ null_gets,
+ null_ctrl,
+ NULL,
+ NULL,
+ NULL, /* null_callback_ctrl */
+};
+
+const BIO_METHOD *BIO_s_null(void)
+{
+ return &null_method;
+}
+
+static int null_read(BIO *b, char *out, int outl)
+{
+ return 0;
+}
+
+static int null_write(BIO *b, const char *in, int inl)
+{
+ return inl;
+}
+
+static long null_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+ long ret = 1;
+
+ switch (cmd) {
+ case BIO_CTRL_RESET:
+ case BIO_CTRL_EOF:
+ case BIO_CTRL_SET:
+ case BIO_CTRL_SET_CLOSE:
+ case BIO_CTRL_FLUSH:
+ case BIO_CTRL_DUP:
+ ret = 1;
+ break;
+ case BIO_CTRL_GET_CLOSE:
+ case BIO_CTRL_INFO:
+ case BIO_CTRL_GET:
+ case BIO_CTRL_PENDING:
+ case BIO_CTRL_WPENDING:
+ default:
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+static int null_gets(BIO *bp, char *buf, int size)
+{
+ return 0;
+}
+
+static int null_puts(BIO *bp, const char *str)
+{
+ if (str == NULL)
+ return 0;
+ return strlen(str);
+}