--- /dev/null
+/* 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_BUFFER_H
+#define OPENSSL_HEADER_BUFFER_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Memory and string functions, see also mem.h.
+
+
+// buf_mem_st (aka |BUF_MEM|) is a generic buffer object used by OpenSSL.
+struct buf_mem_st {
+ size_t length; // current number of bytes
+ char *data;
+ size_t max; // size of buffer
+};
+
+// BUF_MEM_new creates a new BUF_MEM which has no allocated data buffer.
+OPENSSL_EXPORT BUF_MEM *BUF_MEM_new(void);
+
+// BUF_MEM_free frees |buf->data| if needed and then frees |buf| itself.
+OPENSSL_EXPORT void BUF_MEM_free(BUF_MEM *buf);
+
+// BUF_MEM_reserve ensures |buf| has capacity |cap| and allocates memory if
+// needed. It returns one on success and zero on error.
+OPENSSL_EXPORT int BUF_MEM_reserve(BUF_MEM *buf, size_t cap);
+
+// BUF_MEM_grow ensures that |buf| has length |len| and allocates memory if
+// needed. If the length of |buf| increased, the new bytes are filled with
+// zeros. It returns the length of |buf|, or zero if there's an error.
+OPENSSL_EXPORT size_t BUF_MEM_grow(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_grow_clean calls |BUF_MEM_grow|. BoringSSL always zeros memory
+// allocated memory on free.
+OPENSSL_EXPORT size_t BUF_MEM_grow_clean(BUF_MEM *buf, size_t len);
+
+// BUF_MEM_append appends |in| to |buf|. It returns one on success and zero on
+// error.
+OPENSSL_EXPORT int BUF_MEM_append(BUF_MEM *buf, const void *in, size_t len);
+
+// BUF_strdup returns an allocated, duplicate of |str|.
+OPENSSL_EXPORT char *BUF_strdup(const char *str);
+
+// BUF_strnlen returns the number of characters in |str|, excluding the NUL
+// byte, but at most |max_len|. This function never reads more than |max_len|
+// bytes from |str|.
+OPENSSL_EXPORT size_t BUF_strnlen(const char *str, size_t max_len);
+
+// BUF_strndup returns an allocated, duplicate of |str|, which is, at most,
+// |size| bytes. The result is always NUL terminated.
+OPENSSL_EXPORT char *BUF_strndup(const char *str, size_t size);
+
+// BUF_memdup returns an allocated, duplicate of |size| bytes from |data|.
+OPENSSL_EXPORT void *BUF_memdup(const void *data, size_t size);
+
+// BUF_strlcpy acts like strlcpy(3).
+OPENSSL_EXPORT size_t BUF_strlcpy(char *dst, const char *src, size_t dst_size);
+
+// BUF_strlcat acts like strlcat(3).
+OPENSSL_EXPORT size_t BUF_strlcat(char *dst, const char *src, size_t dst_size);
+
+
+#if defined(__cplusplus)
+} // extern C
+
+extern "C++" {
+
+namespace bssl {
+
+BORINGSSL_MAKE_DELETER(BUF_MEM, BUF_MEM_free)
+
+} // namespace bssl
+
+} // extern C++
+
+#endif
+
+#endif // OPENSSL_HEADER_BUFFER_H
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