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