124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/*
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* Copyright (C) 2009 Daniel Verkamp <daniel@drv.nu>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <ipxe/command.h>
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#include <ipxe/parseopt.h>
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#include <ipxe/image.h>
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#include <ipxe/crypto.h>
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#include <ipxe/md5.h>
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#include <ipxe/sha1.h>
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#include <usr/imgmgmt.h>
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/** @file
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*
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* Digest commands
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*
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*/
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/** "digest" options */
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struct digest_options {};
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/** "digest" option list */
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static struct option_descriptor digest_opts[] = {};
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/** "digest" command descriptor */
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static struct command_descriptor digest_cmd =
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COMMAND_DESC ( struct digest_options, digest_opts, 1, MAX_ARGUMENTS,
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"<image> [<image>...]" );
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/**
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* The "digest" command
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*
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* @v argc Argument count
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* @v argv Argument list
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* @v digest Digest algorithm
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* @ret rc Return status code
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*/
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static int digest_exec ( int argc, char **argv,
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struct digest_algorithm *digest ) {
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struct digest_options opts;
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struct image *image;
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uint8_t digest_ctx[digest->ctxsize];
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uint8_t digest_out[digest->digestsize];
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uint8_t buf[128];
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size_t offset;
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size_t len;
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size_t frag_len;
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int i;
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unsigned j;
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int rc;
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/* Parse options */
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if ( ( rc = parse_options ( argc, argv, &digest_cmd, &opts ) ) != 0 )
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return rc;
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for ( i = optind ; i < argc ; i++ ) {
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/* Acquire image */
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if ( ( rc = imgacquire ( argv[i], 0, &image ) ) != 0 )
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continue;
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offset = 0;
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len = image->len;
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/* calculate digest */
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digest_init ( digest, digest_ctx );
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while ( len ) {
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frag_len = len;
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if ( frag_len > sizeof ( buf ) )
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frag_len = sizeof ( buf );
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copy_from_user ( buf, image->data, offset, frag_len );
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digest_update ( digest, digest_ctx, buf, frag_len );
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len -= frag_len;
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offset += frag_len;
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}
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digest_final ( digest, digest_ctx, digest_out );
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for ( j = 0 ; j < sizeof ( digest_out ) ; j++ )
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printf ( "%02x", digest_out[j] );
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printf ( " %s\n", image->name );
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}
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return 0;
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}
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static int md5sum_exec ( int argc, char **argv ) {
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return digest_exec ( argc, argv, &md5_algorithm );
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}
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static int sha1sum_exec ( int argc, char **argv ) {
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return digest_exec ( argc, argv, &sha1_algorithm );
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}
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struct command md5sum_command __command = {
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.name = "md5sum",
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.exec = md5sum_exec,
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};
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struct command sha1sum_command __command = {
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.name = "sha1sum",
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.exec = sha1sum_exec,
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};
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