sysapi/sysapi/GetRpBuffer.c

//**********************************************************************;
// Copyright (c) 2015, Intel Corporation
// All rights reserved.
//
// 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 above 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.
//
// 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 HOLDER 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.
//**********************************************************************;

#include "sapi/tpm20.h"
#include "sysapi_util.h"

TPM_RC Tss2_Sys_GetRpBuffer(
    TSS2_SYS_CONTEXT *sysContext,
    size_t *rpBufferUsedSize,
    const uint8_t **rpBuffer)
{
    if (!sysContext || !rpBufferUsedSize || !rpBuffer)
        return TSS2_SYS_RC_BAD_REFERENCE;

    /* NOTE: should this depend on the status of previous
     * API call? i.e. SYS_CONTEXT->rval != TSS2_RC_SUCCESS */
    if (SYS_CONTEXT->previousStage != CMD_STAGE_RECEIVE_RESPONSE ||
        SYS_CONTEXT->rval != TSS2_RC_SUCCESS)
        return TSS2_SYS_RC_BAD_SEQUENCE;

    *rpBuffer = SYS_CONTEXT->rpBuffer;
    *rpBufferUsedSize = SYS_CONTEXT->rpBufferUsedSize;

    return TSS2_RC_SUCCESS;
}