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