BadVPN – Rev 1
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/**
* @file read_write_int.h
* @author Ambroz Bizjak <ambrop7@gmail.com>
*
* @section LICENSE
*
* 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.
* 3. Neither the name of the author 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 AUTHOR 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 BADVPN_READ_WRITE_INT_H
#define BADVPN_READ_WRITE_INT_H
#include <stdint.h>
static uint8_t badvpn_read_le8 (const char *c_ptr);
static uint16_t badvpn_read_le16 (const char *c_ptr);
static uint32_t badvpn_read_le32 (const char *c_ptr);
static uint64_t badvpn_read_le64 (const char *c_ptr);
static uint8_t badvpn_read_be8 (const char *c_ptr);
static uint16_t badvpn_read_be16 (const char *c_ptr);
static uint32_t badvpn_read_be32 (const char *c_ptr);
static uint64_t badvpn_read_be64 (const char *c_ptr);
static void badvpn_write_le8 (uint8_t x, char *c_ptr);
static void badvpn_write_le16 (uint16_t x, char *c_ptr);
static void badvpn_write_le32 (uint32_t x, char *c_ptr);
static void badvpn_write_le64 (uint64_t x, char *c_ptr);
static void badvpn_write_be8 (uint8_t x, char *c_ptr);
static void badvpn_write_be16 (uint16_t x, char *c_ptr);
static void badvpn_write_be32 (uint32_t x, char *c_ptr);
static void badvpn_write_be64 (uint64_t x, char *c_ptr);
static uint8_t badvpn_read_le8 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint8_t)ptr[0] << 0);
}
static uint16_t badvpn_read_le16 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint16_t)ptr[1] << 8) | ((uint16_t)ptr[0] << 0);
}
static uint32_t badvpn_read_le32 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint32_t)ptr[3] << 24) | ((uint32_t)ptr[2] << 16) |
((uint32_t)ptr[1] << 8) | ((uint32_t)ptr[0] << 0);
}
static uint64_t badvpn_read_le64 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint64_t)ptr[7] << 56) | ((uint64_t)ptr[6] << 48) |
((uint64_t)ptr[5] << 40) | ((uint64_t)ptr[4] << 32) |
((uint64_t)ptr[3] << 24) | ((uint64_t)ptr[2] << 16) |
((uint64_t)ptr[1] << 8) | ((uint64_t)ptr[0] << 0);
}
static uint8_t badvpn_read_be8 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint8_t)ptr[0] << 0);
}
static uint16_t badvpn_read_be16 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint16_t)ptr[0] << 8) | ((uint16_t)ptr[1] << 0);
}
static uint32_t badvpn_read_be32 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint32_t)ptr[0] << 24) | ((uint32_t)ptr[1] << 16) |
((uint32_t)ptr[2] << 8) | ((uint32_t)ptr[3] << 0);
}
static uint64_t badvpn_read_be64 (const char *c_ptr)
{
const uint8_t *ptr = (const uint8_t *)c_ptr;
return ((uint64_t)ptr[0] << 56) | ((uint64_t)ptr[1] << 48) |
((uint64_t)ptr[2] << 40) | ((uint64_t)ptr[3] << 32) |
((uint64_t)ptr[4] << 24) | ((uint64_t)ptr[5] << 16) |
((uint64_t)ptr[6] << 8) | ((uint64_t)ptr[7] << 0);
}
static void badvpn_write_le8 (uint8_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[0] = x >> 0;
}
static void badvpn_write_le16 (uint16_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[1] = x >> 8;
ptr[0] = x >> 0;
}
static void badvpn_write_le32 (uint32_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[3] = x >> 24;
ptr[2] = x >> 16;
ptr[1] = x >> 8;
ptr[0] = x >> 0;
}
static void badvpn_write_le64 (uint64_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[7] = x >> 56;
ptr[6] = x >> 48;
ptr[5] = x >> 40;
ptr[4] = x >> 32;
ptr[3] = x >> 24;
ptr[2] = x >> 16;
ptr[1] = x >> 8;
ptr[0] = x >> 0;
}
static void badvpn_write_be8 (uint8_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[0] = x >> 0;
}
static void badvpn_write_be16 (uint16_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[0] = x >> 8;
ptr[1] = x >> 0;
}
static void badvpn_write_be32 (uint32_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[0] = x >> 24;
ptr[1] = x >> 16;
ptr[2] = x >> 8;
ptr[3] = x >> 0;
}
static void badvpn_write_be64 (uint64_t x, char *c_ptr)
{
uint8_t *ptr = (uint8_t *)c_ptr;
ptr[0] = x >> 56;
ptr[1] = x >> 48;
ptr[2] = x >> 40;
ptr[3] = x >> 32;
ptr[4] = x >> 24;
ptr[5] = x >> 16;
ptr[6] = x >> 8;
ptr[7] = x >> 0;
}
#endif