You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.5 KiB
131 lines
3.5 KiB
/**
|
|
* xrdp: A Remote Desktop Protocol server.
|
|
*
|
|
* Copyright (C) Laxmikant Rashinkar 2013 LK.Rashinkar@gmail.com
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
/**
|
|
* An optimized hexdump function
|
|
*
|
|
* @param address address to display in address column
|
|
* @param buf data to hexdump
|
|
* @param len number of bytes to dump
|
|
*****************************************************************************/
|
|
|
|
void hexdump(int address, char *buf, int len)
|
|
{
|
|
uint32_t addr;
|
|
char outbuf[80];
|
|
int blocks;
|
|
int residual;
|
|
int i;
|
|
int j;
|
|
int buf_index;
|
|
int index2; /* data column */
|
|
int index3; /* ascii column */
|
|
|
|
unsigned char c;
|
|
|
|
char cvt[] = {'0', '1', '2', '3', '4', '5', '6', '7',
|
|
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
|
|
|
|
if ((buf == NULL) || (len <= 0))
|
|
return;
|
|
|
|
addr = (address < 0) ? 0 : address;
|
|
blocks = len / 16;
|
|
residual = len - blocks * 16;
|
|
buf_index = 0;
|
|
|
|
for (i = 0; i < blocks; i++)
|
|
{
|
|
index2 = 10;
|
|
index3 = 60;
|
|
|
|
outbuf[9] = ' ';
|
|
outbuf[8] = ' ';
|
|
outbuf[7] = cvt[(addr >> 0) & 0x0000000f];
|
|
outbuf[6] = cvt[(addr >> 4) & 0x0000000f];
|
|
outbuf[5] = cvt[(addr >> 8) & 0x0000000f];
|
|
outbuf[4] = cvt[(addr >> 12) & 0x0000000f];
|
|
outbuf[3] = cvt[(addr >> 16) & 0x0000000f];
|
|
outbuf[2] = cvt[(addr >> 20) & 0x0000000f];
|
|
outbuf[1] = cvt[(addr >> 24) & 0x0000000f];
|
|
outbuf[0] = cvt[(addr >> 28) & 0x0000000f];
|
|
addr += 16;
|
|
|
|
/* insert spaces */
|
|
outbuf[8] = ' ';
|
|
outbuf[9] = ' ';
|
|
outbuf[58] = ' ';
|
|
outbuf[59] = ' ';
|
|
|
|
for (j = 0; j < 16; j++)
|
|
{
|
|
c = buf[buf_index++];
|
|
|
|
outbuf[index2++] = cvt[(c >> 4) & 0x0f];
|
|
outbuf[index2++] = cvt[(c >> 0) & 0x0f];
|
|
outbuf[index2++] = ' ';
|
|
|
|
if ((c >= 0x20) && (c <= 0x7e))
|
|
outbuf[index3++] = c;
|
|
else
|
|
outbuf[index3++] = '.';
|
|
}
|
|
|
|
outbuf[index3] = 0;
|
|
puts(outbuf);
|
|
}
|
|
|
|
if (!residual)
|
|
return;
|
|
|
|
outbuf[7] = cvt[(addr >> 0) & 0x0000000f];
|
|
outbuf[6] = cvt[(addr >> 4) & 0x0000000f];
|
|
outbuf[5] = cvt[(addr >> 8) & 0x0000000f];
|
|
outbuf[4] = cvt[(addr >> 12) & 0x0000000f];
|
|
outbuf[3] = cvt[(addr >> 16) & 0x0000000f];
|
|
outbuf[2] = cvt[(addr >> 20) & 0x0000000f];
|
|
outbuf[1] = cvt[(addr >> 24) & 0x0000000f];
|
|
outbuf[0] = cvt[(addr >> 28) & 0x0000000f];
|
|
addr += 16;
|
|
|
|
index2 = 10;
|
|
index3 = 60;
|
|
memset(&outbuf[8], ' ', 68);
|
|
|
|
for (j = 0; j < residual; j++)
|
|
{
|
|
c = buf[buf_index++];
|
|
|
|
outbuf[index2++] = cvt[(c >> 4) & 0x0f];
|
|
outbuf[index2++] = cvt[(c >> 0) & 0x0f];
|
|
outbuf[index2++] = ' ';
|
|
|
|
if ((c >= 0x20) && (c <= 0x7e))
|
|
outbuf[index3++] = c;
|
|
else
|
|
outbuf[index3++] = '.';
|
|
}
|
|
|
|
outbuf[index3] = 0;
|
|
puts(outbuf);
|
|
}
|