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Annotation of qemu/roms/ipxe/src/hci/commands/digest_cmd.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (C) 2009 Daniel Verkamp <[email protected]>.
                      3:  *
                      4:  * This program is free software; you can redistribute it and/or
                      5:  * modify it under the terms of the GNU General Public License as
                      6:  * published by the Free Software Foundation; either version 2 of the
                      7:  * License, or any later version.
                      8:  *
                      9:  * This program is distributed in the hope that it will be useful, but
                     10:  * WITHOUT ANY WARRANTY; without even the implied warranty of
                     11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     12:  * General Public License for more details.
                     13:  *
                     14:  * You should have received a copy of the GNU General Public License
                     15:  * along with this program; if not, write to the Free Software
                     16:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     17:  */
                     18: 
                     19: FILE_LICENCE ( GPL2_OR_LATER );
                     20: 
                     21: #include <stdio.h>
                     22: #include <string.h>
                     23: #include <unistd.h>
                     24: #include <getopt.h>
                     25: #include <ipxe/command.h>
                     26: #include <ipxe/parseopt.h>
                     27: #include <ipxe/image.h>
                     28: #include <ipxe/crypto.h>
                     29: #include <ipxe/md5.h>
                     30: #include <ipxe/sha1.h>
                     31: 
                     32: /** @file
                     33:  *
                     34:  * Digest commands
                     35:  *
                     36:  */
                     37: 
                     38: /** "digest" options */
                     39: struct digest_options {};
                     40: 
                     41: /** "digest" option list */
                     42: static struct option_descriptor digest_opts[] = {};
                     43: 
                     44: /** "digest" command descriptor */
                     45: static struct command_descriptor digest_cmd =
                     46:        COMMAND_DESC ( struct digest_options, digest_opts, 1, MAX_ARGUMENTS,
                     47:                       "<image> [<image>...]" );
                     48: 
                     49: /**
                     50:  * The "digest" command
                     51:  *
                     52:  * @v argc             Argument count
                     53:  * @v argv             Argument list
                     54:  * @v digest           Digest algorithm
                     55:  * @ret rc             Return status code
                     56:  */
                     57: static int digest_exec ( int argc, char **argv,
                     58:                         struct digest_algorithm *digest ) {
                     59:        struct digest_options opts;
                     60:        struct image *image;
                     61:        uint8_t digest_ctx[digest->ctxsize];
                     62:        uint8_t digest_out[digest->digestsize];
                     63:        uint8_t buf[128];
                     64:        size_t offset;
                     65:        size_t len;
                     66:        size_t frag_len;
                     67:        int i;
                     68:        unsigned j;
                     69:        int rc;
                     70: 
                     71:        /* Parse options */
                     72:        if ( ( rc = parse_options ( argc, argv, &digest_cmd, &opts ) ) != 0 )
                     73:                return rc;
                     74: 
                     75:        for ( i = optind ; i < argc ; i++ ) {
                     76: 
                     77:                /* find image */
                     78:                if ( ( rc = parse_image ( argv[i], &image ) ) != 0 )
                     79:                        continue;
                     80:                offset = 0;
                     81:                len = image->len;
                     82: 
                     83:                /* calculate digest */
                     84:                digest_init ( digest, digest_ctx );
                     85:                while ( len ) {
                     86:                        frag_len = len;
                     87:                        if ( frag_len > sizeof ( buf ) )
                     88:                                frag_len = sizeof ( buf );
                     89:                        copy_from_user ( buf, image->data, offset, frag_len );
                     90:                        digest_update ( digest, digest_ctx, buf, frag_len );
                     91:                        len -= frag_len;
                     92:                        offset += frag_len;
                     93:                }
                     94:                digest_final ( digest, digest_ctx, digest_out );
                     95: 
                     96:                for ( j = 0 ; j < sizeof ( digest_out ) ; j++ )
                     97:                        printf ( "%02x", digest_out[j] );
                     98: 
                     99:                printf ( "  %s\n", image->name );
                    100:        }
                    101: 
                    102:        return 0;
                    103: }
                    104: 
                    105: static int md5sum_exec ( int argc, char **argv ) {
                    106:        return digest_exec ( argc, argv, &md5_algorithm );
                    107: }
                    108: 
                    109: static int sha1sum_exec ( int argc, char **argv ) {
                    110:        return digest_exec ( argc, argv, &sha1_algorithm );
                    111: }
                    112: 
                    113: struct command md5sum_command __command = {
                    114:        .name = "md5sum",
                    115:        .exec = md5sum_exec,
                    116: };
                    117: 
                    118: struct command sha1sum_command __command = {
                    119:        .name = "sha1sum",
                    120:        .exec = sha1sum_exec,
                    121: };

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