digest_cmd.h File Reference

#include <ipxe/crypto.h>
#include <ipxe/command.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
int	digest_exec (int argc, char **argv, struct digest_algorithm *digest)
	The "digest" command. More...

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

digest_exec()

int digest_exec	(	int	argc,
		char **	argv,
		struct digest_algorithm *	digest
	)

The "digest" command.

Parameters

argc	Argument count
argv	Argument list
digest	Digest algorithm

Return values

rc	Return status code

Definition at line 67 of file digest_cmd.c.

                                                                           {
        struct digest_options opts;
        struct image *image;
        uint8_t ctx[digest->ctxsize];
        uint8_t out[digest->digestsize];
        unsigned int j;
        int i;
        int rc;

        /* Parse options */
        if ( ( rc = parse_options ( argc, argv, &digest_cmd, &opts ) ) != 0 )
                return rc;

        /* Use default setting type, if not specified */
        if ( ! opts.setting.setting.type )
                opts.setting.setting.type = &setting_type_hexraw;

        /* Calculate digests for each image */
        for ( i = optind ; i < argc ; i++ ) {

                /* Acquire image */
                if ( ( rc = imgacquire ( argv[i], 0, &image ) ) != 0 )
                        return rc;

                /* Calculate digest */
                digest_init ( digest, ctx );
                digest_update ( digest, ctx, image->data, image->len );
                digest_final ( digest, ctx, out );

                /* Display or store digest as directed */
                if ( opts.setting.settings ) {

                        /* Store digest */
                        if ( ( rc = store_setting ( opts.setting.settings,
                                                    &opts.setting.setting, out,
                                                    sizeof ( out ) ) ) != 0 ) {
                                printf ( "Could not store \"%s\": %s\n",
                                         opts.setting.setting.name,
                                         strerror ( rc ) );
                                return rc;
                        }

                } else {

                        /* Print digest */
                        for ( j = 0 ; j < sizeof ( out ) ; j++ )
                                printf ( "%02x", out[j] );
                        printf ( "  %s\n", image->name );
                }
        }

        return 0;
}

References ctx, digest_algorithm::ctxsize, image::data, digest_cmd, digest_final(), digest_init(), digest_update(), digest_algorithm::digestsize, imgacquire(), image::len, image::name, optind, opts, out, parse_options(), printf(), rc, store_setting(), and strerror().

Referenced by md4sum_exec(), md5sum_exec(), sha1sum_exec(), sha224sum_exec(), sha256sum_exec(), sha384sum_exec(), and sha512sum_exec().