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// ===================================================================
//
// Copyright (c) 2005, Intel Corp.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Intel Corporation nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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
// COPYRIGHT OWNER 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.
// ===================================================================
#ifndef __VTPM_BUFFER_H__
#define __VTPM_BUFFER_H__
#include <stddef.h> // for pointer NULL
#include "tcg.h"
typedef UINT32 tpm_size_t;
// first version, probably will be expanded...
#define NULL_BUF {0,0,0,0}
typedef struct {
// private!!
tpm_size_t size, alloc_size;
BYTE * bytes;
BOOL is_owner; // do we own this buffer, and need to free it?
} buffer_t;
// allocate the buffer if initsize > 0, copying over initval if provided
TPM_RESULT buffer_init (buffer_t * buf,
tpm_size_t initsize,
const BYTE* initval);
// Create a new buffer from a BYTE *. Use buffer_free to destroy original BYTE *
TPM_RESULT buffer_init_convert (buffer_t * buf,
tpm_size_t initsize,
BYTE* initval);
// make an alias to a constant array, no copying
TPM_RESULT buffer_init_const (buffer_t * buf, tpm_size_t size, const BYTE* val);
// make an alias into buf, with given offset and length
// if len = 0, make the alias go to the end of buf
TPM_RESULT buffer_init_alias (buffer_t * buf, const buffer_t * b,
tpm_size_t offset, tpm_size_t);
// make an alias buffer into a bytestream
TPM_RESULT buffer_init_alias_convert (buffer_t * buf,
tpm_size_t size, BYTE* val);
// "copy constructor"
TPM_RESULT buffer_init_copy (buffer_t * buf, const buffer_t * src);
// copy into the start of a
TPM_RESULT buffer_copy (buffer_t * dest, const buffer_t* src);
// are they equal?
BOOL buffer_eq (const buffer_t * a, const buffer_t * b);
// set the buffer to a constant byte
void buffer_memset (buffer_t * buf, BYTE b);
tpm_size_t buffer_len (const buffer_t* buf);
TPM_RESULT buffer_free (buffer_t * buf);
TPM_RESULT buffer_append_raw (buffer_t * buf, tpm_size_t len, const BYTE* bytes);
#endif // _TOOLS_H_
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