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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2012 Amaury Pouly
*
* 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 (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#define _ISOC99_SOURCE /* snprintf() */
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <stdarg.h>
#include <strings.h>
#include <getopt.h>
#include "crypto.h"
#include "rsrc.h"
#include "misc.h"
/* all blocks are sized as a multiple of 0x1ff */
#define PAD_TO_BOUNDARY(x) (((x) + 0x1ff) & ~0x1ff)
/* If you find a firmware that breaks the known format ^^ */
#define assert(a) do { if(!(a)) { fprintf(stderr,"Assertion \"%s\" failed in %s() line %d!\n\nPlease send us your firmware!\n",#a,__func__,__LINE__); exit(1); } } while(0)
#define crypto_cbc(...) \
do { int ret = crypto_cbc(__VA_ARGS__); \
if(ret != CRYPTO_ERROR_SUCCESS) \
bug("crypto_cbc error: %d\n", ret); \
}while(0)
/* globals */
char *g_out_prefix;
static void extract_rsrc_file(struct rsrc_file_t *file)
{
(void) file;
}
static void usage(void)
{
printf("Usage: rsrctool [options] rsrc-file\n");
printf("Options:\n");
printf(" -?/--help\tDisplay this message\n");
printf(" -o <prefix>\tEnable output and set prefix\n");
printf(" -d/--debug\tEnable debug output*\n");
printf(" -k <file>\tAdd key file\n");
printf(" -z\t\tAdd zero key\n");
printf(" -a/--add-key <key>\tAdd single key (hex or usbotp)\n");
printf(" -n/--no-color\tDisable output colors\n");
printf(" -l/--loopback <file>\tProduce rsrc file out of extracted description*\n");
printf(" -f/--force\tForce reading even without a key*\n");
printf("Options marked with a * are for debug purpose only\n");
exit(1);
}
static void rsrc_printf(void *user, bool error, color_t c, const char *fmt, ...)
{
(void) user;
(void) error;
if(!g_debug)
return;
va_list args;
va_start(args, fmt);
color(c);
vprintf(fmt, args);
va_end(args);
}
static struct crypto_key_t g_zero_key =
{
.method = CRYPTO_KEY,
.u.key = {0}
};
int main(int argc, char **argv)
{
const char *loopback = NULL;
while(1)
{
static struct option long_options[] =
{
{"help", no_argument, 0, '?'},
{"debug", no_argument, 0, 'd'},
{"add-key", required_argument, 0, 'a'},
{"no-color", no_argument, 0, 'n'},
{"loopback", required_argument, 0, 'l'},
{"force", no_argument, 0, 'f' },
{0, 0, 0, 0}
};
int c = getopt_long(argc, argv, "?do:k:za:nl:f", long_options, NULL);
if(c == -1)
break;
switch(c)
{
case -1:
break;
case 'l':
if(loopback)
bug("Only one loopback file can be specified !\n");
loopback = optarg;
break;
case 'n':
enable_color(false);
break;
case 'd':
g_debug = true;
break;
case '?':
usage();
break;
case 'o':
g_out_prefix = optarg;
break;
case 'f':
g_force = true;
break;
case 'k':
{
if(!add_keys_from_file(optarg))
bug("Cannot add keys from %s\n", optarg);
break;
}
case 'z':
{
add_keys(&g_zero_key, 1);
break;
}
case 'a':
{
struct crypto_key_t key;
char *s = optarg;
if(!parse_key(&s, &key))
bug("Invalid key specified as argument\n");
if(*s != 0)
bug("Trailing characters after key specified as argument\n");
add_keys(&key, 1);
break;
}
default:
bug("Internal error: unknown option '%c'\n", c);
}
}
if(argc - optind != 1)
{
usage();
return 1;
}
const char *rsrc_filename = argv[optind];
enum rsrc_error_t err;
struct rsrc_file_t *file = rsrc_read_file(rsrc_filename, NULL, rsrc_printf, &err);
if(file == NULL)
{
color(OFF);
printf("RSRC read failed: %d\n", err);
return 1;
}
if(g_debug)
printf("%d entries read from file\n", file->nr_entries);
color(OFF);
if(g_out_prefix)
extract_rsrc_file(file);
if(g_debug)
{
color(GREY);
printf("[Debug output]\n");
rsrc_dump(file, NULL, rsrc_printf);
}
if(loopback)
{
rsrc_write_file(file, loopback);
}
rsrc_free(file);
clear_keys();
return 0;
}
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