You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
2.9 KiB
C
152 lines
2.9 KiB
C
/*
|
|
* mkdlinkfw
|
|
*
|
|
* Copyright (C) 2018 Paweł Dembicki <paweldembicki@gmail.com>
|
|
*
|
|
* This tool is based on mktplinkfw.
|
|
* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
|
|
* Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <unistd.h> /* for unlink() */
|
|
#include <libgen.h>
|
|
#include <getopt.h> /* for getopt() */
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <endian.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
#include <sys/stat.h>
|
|
#include <zlib.h> /*for crc32 */
|
|
|
|
#include "mkdlinkfw-lib.h"
|
|
|
|
extern char *progname;
|
|
|
|
uint32_t jboot_timestamp(void)
|
|
{
|
|
char *env = getenv("SOURCE_DATE_EPOCH");
|
|
char *endptr = env;
|
|
time_t fixed_timestamp = -1;
|
|
errno = 0;
|
|
|
|
if (env && *env) {
|
|
fixed_timestamp = strtoull(env, &endptr, 10);
|
|
|
|
if (errno || (endptr && *endptr != '\0')) {
|
|
fprintf(stderr, "Invalid SOURCE_DATE_EPOCH");
|
|
fixed_timestamp = -1;
|
|
}
|
|
}
|
|
|
|
if (fixed_timestamp == -1)
|
|
time(&fixed_timestamp);
|
|
|
|
return (((uint32_t) fixed_timestamp) - TIMESTAMP_MAGIC) >> 2;
|
|
}
|
|
|
|
uint16_t jboot_checksum(uint16_t start_val, uint16_t *data, int size)
|
|
{
|
|
uint32_t counter = start_val;
|
|
uint16_t *ptr = data;
|
|
|
|
while (size > 1) {
|
|
counter += *ptr;
|
|
++ptr;
|
|
while (counter >> 16)
|
|
counter = (uint16_t) counter + (counter >> 16);
|
|
size -= 2;
|
|
}
|
|
if (size > 0) {
|
|
counter += *(uint8_t *) ptr;
|
|
counter -= 0xFF;
|
|
}
|
|
while (counter >> 16)
|
|
counter = (uint16_t) counter + (counter >> 16);
|
|
return counter;
|
|
}
|
|
|
|
int get_file_stat(struct file_info *fdata)
|
|
{
|
|
struct stat st;
|
|
int res;
|
|
|
|
if (fdata->file_name == NULL)
|
|
return 0;
|
|
|
|
res = stat(fdata->file_name, &st);
|
|
if (res) {
|
|
ERRS("stat failed on %s", fdata->file_name);
|
|
return res;
|
|
}
|
|
|
|
fdata->file_size = st.st_size;
|
|
return 0;
|
|
}
|
|
|
|
int read_to_buf(const struct file_info *fdata, char *buf)
|
|
{
|
|
FILE *f;
|
|
int ret = EXIT_FAILURE;
|
|
size_t read;
|
|
|
|
f = fopen(fdata->file_name, "r");
|
|
if (f == NULL) {
|
|
ERRS("could not open \"%s\" for reading", fdata->file_name);
|
|
goto out;
|
|
}
|
|
|
|
read = fread(buf, fdata->file_size, 1, f);
|
|
if (ferror(f) || read != 1) {
|
|
ERRS("unable to read from file \"%s\"", fdata->file_name);
|
|
goto out_close;
|
|
}
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
out_close:
|
|
fclose(f);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int write_fw(const char *ofname, const char *data, int len)
|
|
{
|
|
FILE *f;
|
|
int ret = EXIT_FAILURE;
|
|
|
|
f = fopen(ofname, "w");
|
|
if (f == NULL) {
|
|
ERRS("could not open \"%s\" for writing", ofname);
|
|
goto out;
|
|
}
|
|
|
|
errno = 0;
|
|
fwrite(data, len, 1, f);
|
|
if (errno) {
|
|
ERRS("unable to write output file");
|
|
goto out_flush;
|
|
}
|
|
|
|
DBG("firmware file \"%s\" completed", ofname);
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
out_flush:
|
|
fflush(f);
|
|
fclose(f);
|
|
if (ret != EXIT_SUCCESS)
|
|
unlink(ofname);
|
|
out:
|
|
return ret;
|
|
}
|