tools/firmware-utils: add buffalo specific fw tools
SVN-Revision: 27050v19.07.3_mercusys_ac12_duma
Gabor Juhos
13 years ago
parent
0677e16248
commit
fb9a672c78
@ -0,0 +1,296 @@
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/*
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* Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <libgen.h>
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#include <getopt.h> /* for getopt() */
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#include <stdarg.h>
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#include "buffalo-lib.h"
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#define ERR(fmt, args...) do { \
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fflush(0); \
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fprintf(stderr, "[%s] *** error: " fmt "\n", \
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progname, ## args ); \
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} while (0)
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static char *progname;
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static char *ifname;
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static char *ofname;
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static char *crypt_key = "Buffalo";
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static char *magic = "start";
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static int longstate;
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static unsigned char seed = 'O';
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static char *product;
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static char *version;
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static int do_decrypt;
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void usage(int status)
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{
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FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
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fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
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fprintf(stream,
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"\n"
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"Options:\n"
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" -d decrypt instead of encrypt\n"
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" -i <file> read input from the file <file>\n"
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" -o <file> write output to the file <file>\n"
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" -l use longstate {en,de}cryption method\n"
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" -k <key> use <key> for encryption (default: Buffalo)\n"
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" -m <magic> set magic to <magic>\n"
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" -p <product> set product name to <product>\n"
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" -v <version> set version to <version>\n"
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" -h show this screen\n"
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);
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exit(status);
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}
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static int decrypt_file(void)
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{
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struct enc_param ep;
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ssize_t src_len;
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unsigned char *buf = NULL;
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int err;
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int ret = -1;
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src_len = get_file_size(ifname);
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if (src_len < 0) {
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ERR("unable to get size of '%s'", ifname);
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goto out;
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}
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buf = malloc(src_len);
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if (buf == NULL) {
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ERR("no memory for the buffer");
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goto out;
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}
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err = read_file_to_buf(ifname, buf, src_len);
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if (err) {
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ERR("unable to read from file '%s'", ifname);
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goto out;
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}
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memset(&ep, '\0', sizeof(ep));
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ep.key = (unsigned char *) crypt_key;
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err = decrypt_buf(&ep, buf, src_len);
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if (err)
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goto out;
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printf("Magic\t\t: '%s'\n", ep.magic);
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printf("Seed\t\t: 0x%02x\n", ep.seed);
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printf("Product\t\t: '%s'\n", ep.product);
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printf("Version\t\t: '%s'\n", ep.version);
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printf("Data len\t: %u\n", ep.datalen);
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printf("Checksum\t: 0x%08x\n", ep.csum);
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err = write_buf_to_file(ofname, buf, ep.datalen);
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if (err) {
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ERR("unable to write to file '%s'", ofname);
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goto out;
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}
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ret = 0;
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out:
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free(buf);
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return ret;
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}
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static int encrypt_file(void)
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{
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struct enc_param ep;
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ssize_t src_len;
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unsigned char *buf;
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uint32_t hdrlen;
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ssize_t totlen = 0;
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int err;
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int ret = -1;
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src_len = get_file_size(ifname);
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if (src_len < 0) {
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ERR("unable to get size of '%s'", ifname);
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goto out;
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}
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totlen = enc_compute_buf_len(product, version, src_len);
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hdrlen = enc_compute_header_len(product, version);
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buf = malloc(totlen);
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if (buf == NULL) {
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ERR("no memory for the buffer");
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goto out;
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}
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err = read_file_to_buf(ifname, &buf[hdrlen], src_len);
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if (err) {
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ERR("unable to read from file '%s'", ofname);
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goto free_buf;
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}
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memset(&ep, '\0', sizeof(ep));
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ep.key = (unsigned char *) crypt_key;
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ep.seed = seed;
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ep.longstate = longstate;
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ep.csum = buffalo_csum(src_len, &buf[hdrlen], src_len);
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ep.datalen = src_len;
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strcpy((char *) ep.magic, magic);
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strcpy((char *) ep.product, product);
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strcpy((char *) ep.version, version);
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err = encrypt_buf(&ep, buf, &buf[hdrlen]);
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if (err) {
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ERR("invalid input file");
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goto free_buf;
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}
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err = write_buf_to_file(ofname, buf, totlen);
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if (err) {
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ERR("unable to write to file '%s'", ofname);
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goto free_buf;
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}
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ret = 0;
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free_buf:
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free(buf);
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out:
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return ret;
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}
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static int check_params(void)
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{
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int ret = -1;
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if (ifname == NULL) {
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ERR("no input file specified");
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goto out;
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}
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if (ofname == NULL) {
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ERR("no output file specified");
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goto out;
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}
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if (crypt_key == NULL) {
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ERR("no key specified");
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goto out;
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} else if (strlen(crypt_key) > BCRYPT_MAX_KEYLEN) {
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ERR("key '%s' is too long", crypt_key);
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goto out;
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}
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if (strlen(magic) != (ENC_MAGIC_LEN - 1)) {
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ERR("length of magic must be %d", ENC_MAGIC_LEN - 1);
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goto out;
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}
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if (!do_decrypt) {
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if (product == NULL) {
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ERR("no product specified");
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goto out;
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}
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if (version == NULL) {
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ERR("no version specified");
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goto out;
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}
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if (strlen(product) > (ENC_PRODUCT_LEN - 1)) {
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ERR("product name '%s' is too long", product);
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goto out;
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}
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if (strlen(version) > (ENC_VERSION_LEN - 1)) {
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ERR("version '%s' is too long", version);
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goto out;
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}
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}
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ret = 0;
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out:
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return ret;
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}
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int main(int argc, char *argv[])
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{
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int res = EXIT_FAILURE;
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int err;
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progname = basename(argv[0]);
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while ( 1 ) {
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int c;
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c = getopt(argc, argv, "adi:m:o:hp:v:k:r:s:");
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if (c == -1)
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break;
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switch (c) {
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case 'd':
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do_decrypt = 1;
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break;
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case 'i':
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ifname = optarg;
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break;
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case 'l':
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longstate = 1;
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break;
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case 'm':
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magic = optarg;
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break;
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case 'o':
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ofname = optarg;
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break;
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case 'p':
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product = optarg;
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break;
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case 'v':
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version = optarg;
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break;
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case 'k':
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crypt_key = optarg;
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break;
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case 's':
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seed = strtoul(optarg, NULL, 16);
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break;
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case 'h':
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usage(EXIT_SUCCESS);
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break;
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default:
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usage(EXIT_FAILURE);
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break;
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}
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}
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err = check_params();
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if (err)
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goto out;
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if (do_decrypt)
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err = decrypt_file();
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else
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err = encrypt_file();
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if (err)
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goto out;
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res = EXIT_SUCCESS;
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out:
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return res;
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}
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@ -0,0 +1,480 @@
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/*
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* Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "buffalo-lib.h"
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static uint32_t crc32_table[256] =
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{
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0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
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0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
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0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
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0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
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0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
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0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
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0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
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0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
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0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
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0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
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0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
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0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
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0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
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0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
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0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
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0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
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0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
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0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
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0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
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0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
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0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
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0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
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0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
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0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
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0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
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0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
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0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
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0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
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0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
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0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
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0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
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0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
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0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
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0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
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0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
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0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
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0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
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0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
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0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
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0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
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0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
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0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
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0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
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0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
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0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
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0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
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0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
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0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
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0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
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0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
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0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
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0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
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0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
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0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
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0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
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0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
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0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
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0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
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0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
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0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
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0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
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0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
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0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
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0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
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};
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int bcrypt_init(struct bcrypt_ctx *ctx, void *key, int keylen,
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unsigned long state_len)
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{
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unsigned char *state;
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unsigned char *p = key;
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unsigned long i, j;
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unsigned long k = 0;
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state = malloc(state_len);
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if (state == NULL)
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return -1;
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ctx->i = 0;
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ctx->j = 0;
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ctx->state = state;
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ctx->state_len = state_len;
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for (i = 0; i < state_len; i++)
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state[i] = i;
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for(i = 0, j = 0; i < state_len; i++, j = (j + 1) % keylen) {
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unsigned char t;
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t = state[i];
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k = (k + p[j] + t) % state_len;
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state[i] = state[k];
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state[k] = t;
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}
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return 0;
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}
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int bcrypt_process(struct bcrypt_ctx *ctx, unsigned char *src,
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unsigned char *dst, unsigned long len)
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{
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unsigned char *state = ctx->state;
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unsigned long state_len = ctx->state_len;
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unsigned char i, j;
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unsigned long k;
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i = ctx->i;
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j = ctx->j;
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for (k = 0; k < len; k++) {
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unsigned char t;
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i = (i + 1) % state_len;
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j = (j + state[i]) % state_len;
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t = state[j];
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state[j] = state[i];
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state[i] = t;
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dst[k] = src[k] ^ state[(state[i] + state[j]) % state_len];
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}
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||||
|
||||
ctx->i = i;
|
||||
ctx->j = j;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
void bcrypt_finish(struct bcrypt_ctx *ctx)
|
||||
{
|
||||
if (ctx->state)
|
||||
free(ctx->state);
|
||||
}
|
||||
|
||||
int bcrypt_buf(unsigned char seed, unsigned char *key, unsigned char *src,
|
||||
unsigned char *dst, unsigned long len, int longstate)
|
||||
{
|
||||
unsigned char bckey[BCRYPT_MAX_KEYLEN + 1];
|
||||
unsigned int keylen;
|
||||
struct bcrypt_ctx ctx;
|
||||
int ret;
|
||||
|
||||
/* setup decryption key */
|
||||
keylen = strlen((char *) key);
|
||||
bckey[0] = seed;
|
||||
memcpy(&bckey[1], key, keylen);
|
||||
|
||||
keylen++;
|
||||
|
||||
ret = bcrypt_init(&ctx, bckey, keylen,
|
||||
(longstate) ? len : BCRYPT_DEFAULT_STATE_LEN);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
bcrypt_process(&ctx, src, dst, len);
|
||||
bcrypt_finish(&ctx);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
uint32_t buffalo_csum(uint32_t csum, void *buf, unsigned long len)
|
||||
{
|
||||
unsigned char *p = buf;
|
||||
|
||||
while (len--) {
|
||||
int i;
|
||||
|
||||
csum ^= *p++;
|
||||
for (i = 0; i < 8; i++)
|
||||
csum = (csum >> 1) ^ ((csum & 1) ? 0xedb88320ul : 0);
|
||||
}
|
||||
|
||||
return csum;
|
||||
}
|
||||
|
||||
uint32_t buffalo_crc(void *buf, unsigned long len)
|
||||
{
|
||||
unsigned char *p = buf;
|
||||
unsigned long t = len;
|
||||
uint32_t crc = 0;
|
||||
|
||||
while (len--)
|
||||
crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *p++) & 0xFF];
|
||||
|
||||
while (t) {
|
||||
crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ t) & 0xFF];
|
||||
t >>= 8;
|
||||
}
|
||||
|
||||
return ~crc;
|
||||
}
|
||||
|
||||
unsigned long enc_compute_header_len(char *product, char *version)
|
||||
{
|
||||
return ENC_MAGIC_LEN + 1 + strlen(product) + 1 +
|
||||
strlen(version) + 1 + 3 * sizeof(uint32_t);
|
||||
}
|
||||
|
||||
unsigned long enc_compute_buf_len(char *product, char *version,
|
||||
unsigned long datalen)
|
||||
{
|
||||
unsigned long ret;
|
||||
|
||||
ret = enc_compute_header_len(product, version);
|
||||
ret += datalen + sizeof(uint32_t);
|
||||
ret += (4 - ret % 4);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void put_be32(void *data, uint32_t val)
|
||||
{
|
||||
unsigned char *p = data;
|
||||
|
||||
p[0] = (val >> 24) & 0xff;
|
||||
p[1] = (val >> 16) & 0xff;
|
||||
p[2] = (val >> 8) & 0xff;
|
||||
p[3] = val & 0xff;
|
||||
}
|
||||
|
||||
static uint32_t get_be32(void *data)
|
||||
{
|
||||
unsigned char *p = data;
|
||||
|
||||
return (((uint32_t)p[0]) << 24) |
|
||||
(((uint32_t)p[1]) << 16) |
|
||||
(((uint32_t)p[2]) << 8) |
|
||||
((uint32_t)p[3]);
|
||||
}
|
||||
|
||||
static int check_magic(void *magic)
|
||||
{
|
||||
if (!memcmp("start", magic, ENC_MAGIC_LEN));
|
||||
return 0;
|
||||
|
||||
if (!memcmp("asar1", magic, ENC_MAGIC_LEN));
|
||||
return 0;
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
int encrypt_buf(struct enc_param *ep, unsigned char *hdr,
|
||||
unsigned char *data)
|
||||
{
|
||||
unsigned char *p;
|
||||
uint32_t len;
|
||||
int err;
|
||||
int ret = -1;
|
||||
unsigned char s;
|
||||
|
||||
p = (unsigned char *) hdr;
|
||||
|
||||
/* setup magic */
|
||||
len = strlen((char *) ep->magic) + 1;
|
||||
memcpy(p, ep->magic, len);
|
||||
p += len;
|
||||
|
||||
/* setup seed */
|
||||
*p++ = ep->seed;
|
||||
|
||||
/* put product len */
|
||||
len = strlen((char *) ep->product) + 1;
|
||||
put_be32(p, len);
|
||||
p += sizeof(uint32_t);
|
||||
|
||||
/* copy and crypt product name */
|
||||
memcpy(p, ep->product, len);
|
||||
err = bcrypt_buf(ep->seed, ep->key, p, p, len, ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
s = *p;
|
||||
p += len;
|
||||
|
||||
/* put version length */
|
||||
len = strlen((char *) ep->version) + 1;
|
||||
put_be32(p, len);
|
||||
p += sizeof(uint32_t);
|
||||
|
||||
/* copy and crypt version */
|
||||
memcpy(p, ep->version, len);
|
||||
err = bcrypt_buf(s, ep->key, p, p, len, ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
s = *p;
|
||||
p += len;
|
||||
|
||||
/* put data length */
|
||||
put_be32(p, ep->datalen);
|
||||
|
||||
/* encrypt data */
|
||||
err = bcrypt_buf(s, ep->key, data, data, ep->datalen, ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
/* put checksum */
|
||||
put_be32(&data[ep->datalen], ep->csum);
|
||||
|
||||
ret = 0;
|
||||
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int decrypt_buf(struct enc_param *ep, unsigned char *data,
|
||||
unsigned long datalen)
|
||||
{
|
||||
unsigned char *p;
|
||||
uint32_t prod_len;
|
||||
uint32_t ver_len;
|
||||
uint32_t len;
|
||||
uint32_t csum;
|
||||
ssize_t remain;
|
||||
int err;
|
||||
int ret = -1;
|
||||
|
||||
#define CHECKLEN(_l) do { \
|
||||
len = (_l); \
|
||||
if (remain < len) { \
|
||||
goto out; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
#define INCP() do { \
|
||||
p += len; \
|
||||
remain -= len; \
|
||||
} while (0)
|
||||
|
||||
remain = datalen;
|
||||
p = data;
|
||||
|
||||
CHECKLEN(ENC_MAGIC_LEN);
|
||||
err = check_magic(p);
|
||||
if (err)
|
||||
goto out;
|
||||
memcpy(ep->magic, p, ENC_MAGIC_LEN);
|
||||
INCP();
|
||||
|
||||
CHECKLEN(1);
|
||||
ep->seed = *p;
|
||||
INCP();
|
||||
|
||||
CHECKLEN(sizeof(uint32_t));
|
||||
prod_len = get_be32(p);
|
||||
if (prod_len > ENC_PRODUCT_LEN)
|
||||
goto out;
|
||||
INCP();
|
||||
|
||||
CHECKLEN(prod_len);
|
||||
memcpy(ep->product, p, prod_len);
|
||||
INCP();
|
||||
|
||||
CHECKLEN(sizeof(uint32_t));
|
||||
ver_len = get_be32(p);
|
||||
if (ver_len > ENC_VERSION_LEN)
|
||||
goto out;
|
||||
INCP();
|
||||
|
||||
CHECKLEN(ver_len);
|
||||
memcpy(ep->version, p, ver_len);
|
||||
INCP();
|
||||
|
||||
CHECKLEN(sizeof(uint32_t));
|
||||
ep->datalen = get_be32(p);
|
||||
INCP();
|
||||
|
||||
/* decrypt data */
|
||||
CHECKLEN(ep->datalen);
|
||||
err = bcrypt_buf(ep->version[0], ep->key, p, data, ep->datalen,
|
||||
ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
INCP();
|
||||
|
||||
CHECKLEN(sizeof(uint32_t));
|
||||
ep->csum = get_be32(p);
|
||||
INCP();
|
||||
|
||||
csum = buffalo_csum(ep->datalen, data, ep->datalen);
|
||||
if (csum != ep->csum)
|
||||
goto out;
|
||||
|
||||
/* decrypt product name */
|
||||
err = bcrypt_buf(ep->product[0], ep->key, ep->version, ep->version,
|
||||
ver_len, ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
/* decrypt version */
|
||||
err = bcrypt_buf(ep->seed, ep->key, ep->product, ep->product, prod_len,
|
||||
ep->longstate);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
ret = 0;
|
||||
out:
|
||||
return ret;
|
||||
|
||||
#undef CHECKLEN
|
||||
#undef INCP
|
||||
}
|
||||
|
||||
ssize_t get_file_size(char *name)
|
||||
{
|
||||
struct stat st;
|
||||
int err;
|
||||
|
||||
err = stat(name, &st);
|
||||
if (err)
|
||||
return -1;
|
||||
|
||||
return st.st_size;
|
||||
}
|
||||
|
||||
int read_file_to_buf(char *name, void *buf, ssize_t buflen)
|
||||
{
|
||||
FILE *f;
|
||||
size_t done;
|
||||
int ret = -1;
|
||||
|
||||
f = fopen(name, "r");
|
||||
if (f == NULL)
|
||||
goto out;
|
||||
|
||||
errno = 0;
|
||||
done = fread(buf, buflen, 1, f);
|
||||
if (done != 1)
|
||||
goto close;
|
||||
|
||||
ret = 0;
|
||||
|
||||
close:
|
||||
fclose(f);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int write_buf_to_file(char *name, void *buf, ssize_t buflen)
|
||||
{
|
||||
FILE *f;
|
||||
size_t done;
|
||||
int ret = -1;
|
||||
|
||||
f = fopen(name, "w");
|
||||
if (f == NULL)
|
||||
goto out;
|
||||
|
||||
errno = 0;
|
||||
done = fwrite(buf, buflen, 1, f);
|
||||
if (done != 1)
|
||||
goto close;
|
||||
|
||||
ret = 0;
|
||||
|
||||
close:
|
||||
fflush(f);
|
||||
fclose(f);
|
||||
if (ret)
|
||||
unlink(name);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
@ -0,0 +1,99 @@
|
||||
/*
|
||||
* Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published
|
||||
* by the Free Software Foundation.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _BUFFALO_LIB_H
|
||||
#define _BUFFALO_LIB_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define ARRAY_SIZE(_a) (sizeof((_a)) / sizeof((_a)[0]))
|
||||
#define BIT(_x) (1UL << (_x))
|
||||
|
||||
#define TAG_BRAND_LEN 32
|
||||
#define TAG_PRODUCT_LEN 32
|
||||
#define TAG_VERSION_LEN 8
|
||||
#define TAG_REGION_LEN 2
|
||||
#define TAG_LANGUAGE_LEN 8
|
||||
#define TAG_PLATFORM_LEN 8
|
||||
#define TAG_HWVER_LEN 4
|
||||
#define TAG_HWVER_VAL_LEN 4
|
||||
|
||||
struct buffalo_tag {
|
||||
unsigned char product[TAG_PRODUCT_LEN];
|
||||
unsigned char brand[TAG_BRAND_LEN];
|
||||
unsigned char ver_major[TAG_VERSION_LEN];
|
||||
unsigned char ver_minor[TAG_VERSION_LEN];
|
||||
unsigned char region_code[2];
|
||||
uint32_t region_mask;
|
||||
unsigned char unknown0[2];
|
||||
unsigned char language[TAG_LANGUAGE_LEN];
|
||||
unsigned char platform[TAG_PLATFORM_LEN];
|
||||
unsigned char hwv[TAG_HWVER_LEN];
|
||||
unsigned char hwv_val[TAG_HWVER_VAL_LEN];
|
||||
uint8_t unknown1[24];
|
||||
|
||||
uint32_t len;
|
||||
uint32_t crc;
|
||||
uint32_t base1;
|
||||
uint32_t base2;
|
||||
uint32_t data_len;
|
||||
uint8_t flag;
|
||||
uint8_t unknown2[3];
|
||||
} __attribute ((packed));
|
||||
|
||||
#define ENC_PRODUCT_LEN 32
|
||||
#define ENC_VERSION_LEN 8
|
||||
#define ENC_MAGIC_LEN 6
|
||||
|
||||
unsigned long enc_compute_header_len(char *product, char *version);
|
||||
unsigned long enc_compute_buf_len(char *product, char *version,
|
||||
unsigned long datalen);
|
||||
|
||||
struct enc_param {
|
||||
unsigned char *key;
|
||||
unsigned char magic[ENC_MAGIC_LEN];
|
||||
unsigned char product[ENC_PRODUCT_LEN];
|
||||
unsigned char version[ENC_VERSION_LEN];
|
||||
unsigned char seed;
|
||||
int longstate;
|
||||
unsigned datalen;
|
||||
uint32_t csum;
|
||||
};
|
||||
|
||||
int encrypt_buf(struct enc_param *ep, unsigned char *hdr,
|
||||
unsigned char *data);
|
||||
int decrypt_buf(struct enc_param *ep, unsigned char *data,
|
||||
unsigned long datalen);
|
||||
|
||||
#define BCRYPT_DEFAULT_STATE_LEN 256
|
||||
#define BCRYPT_MAX_KEYLEN 254
|
||||
|
||||
struct bcrypt_ctx {
|
||||
unsigned long i;
|
||||
unsigned long j;
|
||||
unsigned char *state;
|
||||
unsigned long state_len;
|
||||
};
|
||||
|
||||
int bcrypt_init(struct bcrypt_ctx *ctx, void *key, int keylen,
|
||||
unsigned long state_len);
|
||||
int bcrypt_process(struct bcrypt_ctx *ctx, unsigned char *src,
|
||||
unsigned char *dst, unsigned long len);
|
||||
void bcrypt_finish(struct bcrypt_ctx *ctx);
|
||||
int bcrypt_buf(unsigned char seed, unsigned char *key, unsigned char *src,
|
||||
unsigned char *dst, unsigned long len, int longstate);
|
||||
|
||||
uint32_t buffalo_csum(uint32_t csum, void *buf, unsigned long len);
|
||||
uint32_t buffalo_crc(void *buf, unsigned long len);
|
||||
|
||||
ssize_t get_file_size(char *name);
|
||||
int read_file_to_buf(char *name, void *buf, ssize_t buflen);
|
||||
int write_buf_to_file(char *name, void *buf, ssize_t buflen);
|
||||
|
||||
#endif /* _BUFFALO_LIB_H */
|
||||
@ -0,0 +1,300 @@
|
||||
/*
|
||||
* Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published
|
||||
* by the Free Software Foundation.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <libgen.h>
|
||||
#include <getopt.h> /* for getopt() */
|
||||
#include <netinet/in.h>
|
||||
|
||||
#include "buffalo-lib.h"
|
||||
|
||||
#define ERR(fmt, ...) do { \
|
||||
fflush(0); \
|
||||
fprintf(stderr, "[%s] *** error: " fmt "\n", \
|
||||
progname, ## __VA_ARGS__ ); \
|
||||
} while (0)
|
||||
|
||||
static char *region_table[] = {
|
||||
"JP", "US", "EU", "AP", "TW", "KR"
|
||||
};
|
||||
|
||||
static char *progname;
|
||||
static char *ifname;
|
||||
static char *ofname;
|
||||
static char *product;
|
||||
static char *brand;
|
||||
static char *language;
|
||||
static char *hwver;
|
||||
static char *platform;
|
||||
static int flag;
|
||||
static char *major;
|
||||
static char *minor = "1.01";
|
||||
static int skipcrc;
|
||||
static uint32_t base1;
|
||||
static uint32_t base2;
|
||||
static char *region_code;
|
||||
static uint32_t region_mask;
|
||||
static int num_regions;
|
||||
|
||||
void usage(int status)
|
||||
{
|
||||
FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
|
||||
|
||||
fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
|
||||
fprintf(stream,
|
||||
"\n"
|
||||
"Options:\n"
|
||||
" -a <platform> set platform to <platform>\n"
|
||||
" -b <brand> set brand to <brand>\n"
|
||||
" -c <base1>\n"
|
||||
" -d <base2>\n"
|
||||
" -f <flag> set flag to <flag>\n"
|
||||
" -i <file> read input from the file <file>\n"
|
||||
" -l <language> set language to <language>\n"
|
||||
" -m <version> set minor version to <version>\n"
|
||||
" -o <file> write output to the file <file>\n"
|
||||
" -p <product> set product to <product>\n"
|
||||
" -r <region> set image region to <region>\n"
|
||||
" valid regions: JP, US, EU, AP, TW, KR, M_\n"
|
||||
" -s skip CRC calculation\n"
|
||||
" -v <version> set major version to <version>\n"
|
||||
" -w <version> set harwdware version to <version>\n"
|
||||
" -h show this screen\n"
|
||||
);
|
||||
|
||||
exit(status);
|
||||
}
|
||||
|
||||
static int check_params(void)
|
||||
{
|
||||
|
||||
#define CHECKSTR(_var, _name, _len) do { \
|
||||
if ((_var) == NULL) { \
|
||||
ERR("no %s specified", (_name)); \
|
||||
return -1; \
|
||||
} \
|
||||
if ((_len) > 0 && \
|
||||
strlen((_var)) > ((_len) - 1)) { \
|
||||
ERR("%s is too long", (_name)); \
|
||||
return -1; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
CHECKSTR(ifname, "input file", 0);
|
||||
CHECKSTR(ofname, "output file", 0);
|
||||
CHECKSTR(brand, "brand", TAG_BRAND_LEN);
|
||||
CHECKSTR(product, "product", TAG_PRODUCT_LEN);
|
||||
CHECKSTR(platform, "platform", TAG_PLATFORM_LEN);
|
||||
CHECKSTR(major, "major version", TAG_VERSION_LEN);
|
||||
CHECKSTR(minor, "minor version", TAG_VERSION_LEN);
|
||||
CHECKSTR(language, "language", TAG_LANGUAGE_LEN);
|
||||
CHECKSTR(hwver, "hardware version", 2);
|
||||
|
||||
if (num_regions == 0) {
|
||||
ERR("no region code specified");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
#undef CHECKSTR
|
||||
}
|
||||
|
||||
static int process_region(char *reg)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (strlen(reg) != 2) {
|
||||
ERR("invalid region code '%s'", reg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (strcmp(reg, "M_") == 0) {
|
||||
region_code = reg;
|
||||
region_mask |= ~0;
|
||||
num_regions = 32;
|
||||
return 0;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(region_table); i++)
|
||||
if (strcmp(reg, region_table[i]) == 0) {
|
||||
region_code = reg;
|
||||
region_mask |= 1 << i;
|
||||
num_regions++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
ERR("unknown region code '%s'", reg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void fixup_tag(unsigned char *buf, ssize_t buflen, ssize_t datalen)
|
||||
{
|
||||
struct buffalo_tag *tag = (struct buffalo_tag *) buf;
|
||||
|
||||
memset(tag, '\0', sizeof(*tag));
|
||||
|
||||
memcpy(tag->brand, brand, strlen(brand));
|
||||
memcpy(tag->product, product, strlen(product));
|
||||
memcpy(tag->platform, platform, strlen(platform));
|
||||
memcpy(tag->ver_major, major, strlen(major));
|
||||
memcpy(tag->ver_minor, minor, strlen(minor));
|
||||
memcpy(tag->language, language, strlen(language));
|
||||
|
||||
if (num_regions > 1) {
|
||||
tag->region_code[0] = 'M';
|
||||
tag->region_code[1] = '_';
|
||||
tag->region_mask = htonl(region_mask);
|
||||
} else {
|
||||
memcpy(tag->region_code, region_code, 2);
|
||||
}
|
||||
|
||||
tag->len = htonl(buflen);
|
||||
tag->data_len = htonl(datalen);
|
||||
tag->base1 = htonl(base1);
|
||||
tag->base2 = htonl(base2);
|
||||
tag->flag = flag;
|
||||
|
||||
if (hwver) {
|
||||
memcpy(tag->hwv, "hwv", 3);
|
||||
memcpy(tag->hwv_val, hwver, strlen(hwver));
|
||||
}
|
||||
|
||||
if (!skipcrc)
|
||||
tag->crc = htonl(buffalo_crc(buf, buflen));
|
||||
}
|
||||
|
||||
static int tag_file(void)
|
||||
{
|
||||
unsigned char *buf;
|
||||
ssize_t fsize;
|
||||
ssize_t buflen;
|
||||
int err;
|
||||
int ret = -1;
|
||||
|
||||
fsize = get_file_size(ifname);
|
||||
if (fsize < 0) {
|
||||
ERR("unable to get size of '%s'", ifname);
|
||||
goto out;
|
||||
}
|
||||
|
||||
buflen = fsize + sizeof(struct buffalo_tag);
|
||||
buf = malloc(buflen);
|
||||
if (!buf) {
|
||||
ERR("no memory for buffer\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = read_file_to_buf(ifname, buf + sizeof(struct buffalo_tag),
|
||||
fsize);
|
||||
if (err) {
|
||||
ERR("unable to read from file '%s'", ifname);
|
||||
goto free_buf;
|
||||
}
|
||||
|
||||
fixup_tag(buf, buflen, fsize);
|
||||
|
||||
err = write_buf_to_file(ofname, buf, buflen);
|
||||
if (err) {
|
||||
ERR("unable to write to file '%s'", ofname);
|
||||
goto free_buf;
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
|
||||
free_buf:
|
||||
free(buf);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int res = EXIT_FAILURE;
|
||||
int err;
|
||||
|
||||
progname = basename(argv[0]);
|
||||
|
||||
while ( 1 ) {
|
||||
int c;
|
||||
|
||||
c = getopt(argc, argv, "a:b:c:d:f:hi:l:m:o:p:r:sv:w:");
|
||||
if (c == -1)
|
||||
break;
|
||||
|
||||
switch (c) {
|
||||
case 'a':
|
||||
platform = optarg;
|
||||
break;
|
||||
case 'b':
|
||||
brand = optarg;
|
||||
break;
|
||||
case 'c':
|
||||
base1 = strtoul(optarg, NULL, 16);
|
||||
break;
|
||||
case 'd':
|
||||
base2 = strtoul(optarg, NULL, 16);
|
||||
break;
|
||||
case 'f':
|
||||
flag = strtoul(optarg, NULL, 2);
|
||||
break;
|
||||
case 'i':
|
||||
ifname = optarg;
|
||||
break;
|
||||
case 'l':
|
||||
language = optarg;
|
||||
break;
|
||||
case 'm':
|
||||
minor = optarg;
|
||||
break;
|
||||
case 'o':
|
||||
ofname = optarg;
|
||||
break;
|
||||
case 'p':
|
||||
product = optarg;
|
||||
break;
|
||||
case 'r':
|
||||
err = process_region(optarg);
|
||||
if (err)
|
||||
goto out;
|
||||
break;
|
||||
case 's':
|
||||
skipcrc = 1;
|
||||
break;
|
||||
case 'v':
|
||||
major = optarg;
|
||||
break;
|
||||
case 'w':
|
||||
hwver = optarg;
|
||||
break;
|
||||
case 'h':
|
||||
usage(EXIT_SUCCESS);
|
||||
break;
|
||||
default:
|
||||
usage(EXIT_FAILURE);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
err = check_params();
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
err = tag_file();
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
res = EXIT_SUCCESS;
|
||||
|
||||
out:
|
||||
return res;
|
||||
}
|
||||
Loading…
Reference in New Issue