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/*
* MD5 Shell Command Implmentation
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <rtems.h>
#include <rtems/shell.h>
#include <md5.h>
#define BUFFER_SIZE (4 * 1024)
static int rtems_shell_main_md5(
int argc,
char *argv[])
{
uint8_t* buffer;
uint8_t hash[16];
size_t h;
buffer = malloc(BUFFER_SIZE);
if (!buffer)
{
printf("error: no memory\n");
return 1;
}
--argc;
++argv;
while (argc)
{
struct stat sb;
MD5_CTX md5;
int in;
if (stat(*argv, &sb) < 0)
{
free(buffer);
printf("error: stat of %s: %s\n", *argv, strerror(errno));
return 1;
}
in = open(*argv, O_RDONLY);
if (in < 0)
{
free(buffer);
printf("error: opening %s: %s\n", *argv, strerror(errno));
return 1;
}
MD5Init(&md5);
while (sb.st_size)
{
ssize_t size = sb.st_size > BUFFER_SIZE ? BUFFER_SIZE : sb.st_size;
if (read(in, buffer, size) != size)
{
close(in);
free(buffer);
printf("error: reading %s: %s\n", *argv, strerror(errno));
return 1;
}
MD5Update(&md5, buffer, size);
sb.st_size -= size;
}
MD5Final(hash, &md5);
close(in);
printf("MD5 (%s) = ", *argv);
for (h = 0; h < sizeof(hash); ++h)
printf("%02x", (int) hash[h]);
printf("\n");
--argc;
++argv;
}
free(buffer);
return 0;
}
rtems_shell_cmd_t rtems_shell_MD5_Command = {
"md5", /* name */
"md5 [file ...]", /* usage */
"files", /* topic */
rtems_shell_main_md5, /* command */
NULL, /* alias */
NULL /* next */
};
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