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/*
* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <stdio.h>
#include <getopt.h>
#include <ipxe/image.h>
#include <ipxe/command.h>
#include <ipxe/parseopt.h>
#include <usr/imgmgmt.h>
#include <usr/imgtrust.h>
/** @file
*
* Image trust management commands
*
*/
/** "imgtrust" options */
struct imgtrust_options {
/** Allow trusted images */
int allow;
/** Make trust requirement permanent */
int permanent;
};
/** "imgtrust" option list */
static struct option_descriptor imgtrust_opts[] = {
OPTION_DESC ( "allow", 'a', no_argument,
struct imgtrust_options, allow, parse_flag ),
OPTION_DESC ( "permanent", 'p', no_argument,
struct imgtrust_options, permanent, parse_flag ),
};
/** "imgtrust" command descriptor */
static struct command_descriptor imgtrust_cmd =
COMMAND_DESC ( struct imgtrust_options, imgtrust_opts, 0, 0, NULL );
/**
* The "imgtrust" command
*
* @v argc Argument count
* @v argv Argument list
* @ret rc Return status code
*/
static int imgtrust_exec ( int argc, char **argv ) {
struct imgtrust_options opts;
int rc;
/* Parse options */
if ( ( rc = parse_options ( argc, argv, &imgtrust_cmd, &opts ) ) != 0 )
return rc;
/* Set trust requirement */
if ( ( rc = image_set_trust ( ( ! opts.allow ),
opts.permanent ) ) != 0 ) {
printf ( "Could not set image trust requirement: %s\n",
strerror ( rc ) );
return rc;
}
return 0;
}
/** "imgverify" options */
struct imgverify_options {
/** Required signer common name */
char *signer;
/** Keep signature after verification */
int keep;
/** Download timeout */
unsigned long timeout;
};
/** "imgverify" option list */
static struct option_descriptor imgverify_opts[] = {
OPTION_DESC ( "signer", 's', required_argument,
struct imgverify_options, signer, parse_string ),
OPTION_DESC ( "keep", 'k', no_argument,
struct imgverify_options, keep, parse_flag ),
OPTION_DESC ( "timeout", 't', required_argument,
struct imgverify_options, timeout, parse_timeout),
};
/** "imgverify" command descriptor */
static struct command_descriptor imgverify_cmd =
COMMAND_DESC ( struct imgverify_options, imgverify_opts, 2, 2,
"<uri|image> <signature uri|image>" );
/**
* The "imgverify" command
*
* @v argc Argument count
* @v argv Argument list
* @ret rc Return status code
*/
static int imgverify_exec ( int argc, char **argv ) {
struct imgverify_options opts;
const char *image_name_uri;
const char *signature_name_uri;
struct image *image;
struct image *signature;
int rc;
/* Parse options */
if ( ( rc = parse_options ( argc, argv, &imgverify_cmd, &opts ) ) != 0 )
return rc;
/* Parse image name/URI string */
image_name_uri = argv[optind];
/* Parse signature name/URI string */
signature_name_uri = argv[ optind + 1 ];
/* Acquire the image */
if ( ( rc = imgacquire ( image_name_uri, opts.timeout, &image ) ) != 0 )
goto err_acquire_image;
/* Acquire the signature image */
if ( ( rc = imgacquire ( signature_name_uri, opts.timeout,
&signature ) ) != 0 )
goto err_acquire_signature;
/* Verify image */
if ( ( rc = imgverify ( image, signature, opts.signer ) ) != 0 ) {
printf ( "Could not verify: %s\n", strerror ( rc ) );
goto err_verify;
}
/* Success */
rc = 0;
err_verify:
/* Discard signature unless --keep was specified */
if ( ! opts.keep )
unregister_image ( signature );
err_acquire_signature:
err_acquire_image:
return rc;
}
/** Image trust management commands */
struct command image_trust_commands[] __command = {
{
.name = "imgtrust",
.exec = imgtrust_exec,
},
{
.name = "imgverify",
.exec = imgverify_exec,
},
};
/* Drag in objects via command list */
REQUIRING_SYMBOL ( image_trust_commands );
/* Drag in objects typically required for signature verification */
REQUIRE_OBJECT ( rsa );
REQUIRE_OBJECT ( md5 );
REQUIRE_OBJECT ( sha1 );
REQUIRE_OBJECT ( sha256 );
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