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/*
* Copyright (c) 2020-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* pldm_buff.cpp
*
* Created on: Feb 27, 2019
* Author: Samer Deeb
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <string>
#include <compatibility.h>
#include "pldm_buff.h"
PldmBuffer::PldmBuffer() : m_buff(NULL), m_pos(0), m_size(0) {}
PldmBuffer::~PldmBuffer()
{
reset();
}
void PldmBuffer::reset()
{
if (m_buff)
{
delete[] m_buff;
m_buff = NULL;
}
m_pos = 0;
m_size = 0;
}
bool PldmBuffer::loadFile(const std::string& fname)
{
// open the file:
FILE* fp;
fp = fopen(fname.c_str(), "rb");
if (!fp)
{
return false;
}
// Get file length
fseek(fp, 0, SEEK_END);
m_size = ftell(fp);
fseek(fp, 0, SEEK_SET);
// Allocate memory
if (m_buff)
{
delete[] m_buff;
m_buff = NULL;
}
m_buff = new u_int8_t[m_size + 1];
if (!m_buff)
{
return false;
}
// Read file contents into buffer
size_t read_size = fread(m_buff, m_size, 1, fp);
fclose(fp);
return (read_size == (size_t)m_size);
}
void PldmBuffer::read(u_int8_t& val)
{
val = *(m_buff + m_pos);
m_pos += sizeof(u_int8_t);
}
void PldmBuffer::read(u_int16_t& val)
{
val = *(u_int16_t*)(m_buff + m_pos);
m_pos += sizeof(u_int16_t);
val = __le16_to_cpu(val);
}
void PldmBuffer::read(u_int32_t& val)
{
val = *(u_int32_t*)(m_buff + m_pos);
m_pos += sizeof(u_int32_t);
val = __le32_to_cpu(val);
}
void PldmBuffer::read(std::string& str, size_t str_size)
{
u_int8_t* arr = new u_int8_t[str_size];
read(arr, str_size);
str = std::string(reinterpret_cast<char const*>(arr), str_size);
delete[] arr;
}
void PldmBuffer::read(u_int8_t* arr, size_t arr_size)
{
memcpy(arr, m_buff + m_pos, arr_size);
m_pos += arr_size;
}
int PldmBuffer::seek(long offset, int whence)
{
long new_pos = -1;
switch (whence)
{
case SEEK_SET:
new_pos = offset;
break;
case SEEK_CUR:
new_pos = m_pos + offset;
break;
case SEEK_END:
new_pos = m_size + offset;
break;
}
if (new_pos < 0 || new_pos > m_size)
{
return -1;
}
m_pos = new_pos;
return 0;
}
long PldmBuffer::tell()
{
return m_pos;
}
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