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+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * 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.] */
+
+#ifndef OPENSSL_HEADER_MEM_H
+#define OPENSSL_HEADER_MEM_H
+
+#include <openssl/base.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* Memory and string functions, see also buf.h.
+ *
+ * OpenSSL has, historically, had a complex set of malloc debugging options.
+ * However, that was written in a time before Valgrind and ASAN. Since we now
+ * have those tools, the OpenSSL allocation functions are simply macros around
+ * the standard memory functions. */
+
+
+#define OPENSSL_malloc malloc
+#define OPENSSL_realloc realloc
+#define OPENSSL_free free
+
+/* OPENSSL_realloc_clean acts like |realloc|, but clears the previous memory
+ * buffer. Because this is implemented as a wrapper around |malloc|, it needs
+ * to be given the size of the buffer pointed to by |ptr|. */
+void *OPENSSL_realloc_clean(void *ptr, size_t old_size, size_t new_size);
+
+/* OPENSSL_cleanse zeros out |len| bytes of memory at |ptr|. This is similar to
+ * |memset_s| from C11. */
+OPENSSL_EXPORT void OPENSSL_cleanse(void *ptr, size_t len);
+
+/* CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
+ * takes an amount of time dependent on |len|, but independent of the contents
+ * of |a| and |b|. Unlike memcmp, it cannot be used to put elements into a
+ * defined order as the return value when a != b is undefined, other than to be
+ * non-zero. */
+OPENSSL_EXPORT int CRYPTO_memcmp(const void *a, const void *b, size_t len);
+
+/* OPENSSL_hash32 implements the 32 bit, FNV-1a hash. */
+OPENSSL_EXPORT uint32_t OPENSSL_hash32(const void *ptr, size_t len);
+
+/* OPENSSL_strdup has the same behaviour as strdup(3). */
+OPENSSL_EXPORT char *OPENSSL_strdup(const char *s);
+
+/* OPENSSL_strnlen has the same behaviour as strnlen(3). */
+OPENSSL_EXPORT size_t OPENSSL_strnlen(const char *s, size_t len);
+
+/* OPENSSL_strcasecmp has the same behaviour as strcasecmp(3). */
+OPENSSL_EXPORT int OPENSSL_strcasecmp(const char *a, const char *b);
+
+/* OPENSSL_strncasecmp has the same behaviour as strncasecmp(3). */
+OPENSSL_EXPORT int OPENSSL_strncasecmp(const char *a, const char *b, size_t n);
+
+/* DECIMAL_SIZE returns an upper bound for the length of the decimal
+ * representation of the given type. */
+#define DECIMAL_SIZE(type) ((sizeof(type)*8+2)/3+1)
+
+/* BIO_snprintf has the same behavior as snprintf(3). */
+OPENSSL_EXPORT int BIO_snprintf(char *buf, size_t n, const char *format, ...)
+ OPENSSL_PRINTF_FORMAT_FUNC(3, 4);
+
+/* BIO_vsnprintf has the same behavior as vsnprintf(3). */
+OPENSSL_EXPORT int BIO_vsnprintf(char *buf, size_t n, const char *format,
+ va_list args)
+ OPENSSL_PRINTF_FORMAT_FUNC(3, 0);
+
+
+/* Deprecated functions. */
+
+#define CRYPTO_malloc OPENSSL_malloc
+#define CRYPTO_realloc OPENSSL_realloc
+#define CRYPTO_free OPENSSL_free
+
+
+#if defined(__cplusplus)
+} /* extern C */
+
+extern "C++" {
+
+namespace bssl {
+
+BORINGSSL_MAKE_DELETER(char, OPENSSL_free)
+BORINGSSL_MAKE_DELETER(uint8_t, OPENSSL_free)
+
+} // namespace bssl
+
+} /* extern C++ */
+
+#endif
+
+#endif /* OPENSSL_HEADER_MEM_H */