firmware-utils/mkplanexfw: new firmware generation tool for the Planex MZK-W04NU device
SVN-Revision: 14410
This commit is contained in:
Gabor Juhos
207
tools/firmware-utils/src/mkplanexfw.c
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207
tools/firmware-utils/src/mkplanexfw.c
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/*
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* Copyright (C) 2009 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 <unistd.h> /* for unlink() */
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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 <errno.h>
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#include <sys/stat.h>
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#include "sha1.h"
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#if (__BYTE_ORDER == __BIG_ENDIAN)
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# define HOST_TO_BE32(x) (x)
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# define BE32_TO_HOST(x) (x)
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#else
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# define HOST_TO_BE32(x) bswap_32(x)
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# define BE32_TO_HOST(x) bswap_32(x)
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#endif
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struct planex_hdr {
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uint8_t sha1sum[20];
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char version[8];
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uint8_t unk1[2];
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uint32_t datalen;
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} __attribute__ ((packed));
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/*
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* Globals
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*/
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static char *ifname;
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static char *progname;
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static char *ofname;
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static char *version = "1.00.00";
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/*
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* Message macros
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*/
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#define ERR(fmt, ...) do { \
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fflush(0); \
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fprintf(stderr, "[%s] *** error: " fmt "\n", \
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progname, ## __VA_ARGS__ ); \
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} while (0)
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#define ERRS(fmt, ...) do { \
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int save = errno; \
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fflush(0); \
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fprintf(stderr, "[%s] *** error: " fmt "\n", \
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progname, ## __VA_ARGS__, strerror(save)); \
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} while (0)
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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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struct board_info *board;
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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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" -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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" -v <version> set image 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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int main(int argc, char *argv[])
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{
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int res = EXIT_FAILURE;
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int buflen;
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int err;
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struct stat st;
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char *buf;
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struct planex_hdr *hdr;
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sha1_context ctx;
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uint32_t t = HOST_TO_BE32(2);
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FILE *outfile, *infile;
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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, "i:o:v:h");
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if (c == -1)
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break;
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switch (c) {
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case 'i':
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ifname = 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 'v':
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version = optarg;
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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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if (ifname == NULL) {
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ERR("no input file specified");
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goto err;
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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 err;
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}
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err = stat(ifname, &st);
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if (err){
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ERRS("stat failed on %s", ifname);
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goto err;
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}
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buflen = (st.st_size + 3) & ~3;
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buflen += sizeof(*hdr);
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buf = malloc(buflen);
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if (!buf) {
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ERR("no memory for buffer\n");
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goto err;
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}
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memset(buf, 0xff, buflen);
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hdr = (struct planex_hdr *)buf;
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hdr->datalen = HOST_TO_BE32(buflen - sizeof(*hdr));
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hdr->unk1[0] = 0x04;
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hdr->unk1[1] = 0x08;
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snprintf(hdr->version, sizeof(hdr->version), "%s", version);
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infile = fopen(ifname, "r");
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if (infile == NULL) {
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ERRS("could not open \"%s\" for reading", ifname);
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goto err_free;
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}
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errno = 0;
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fread(buf + sizeof(*hdr), st.st_size, 1, infile);
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if (errno != 0) {
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ERRS("unable to read from file %s", ifname);
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goto err_close_in;
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}
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sha1_starts(&ctx);
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sha1_update(&ctx, (uchar *) &t, sizeof(t));
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sha1_update(&ctx, buf + sizeof(*hdr), buflen - sizeof(*hdr));
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sha1_finish(&ctx, hdr->sha1sum);
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outfile = fopen(ofname, "w");
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if (outfile == NULL) {
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ERRS("could not open \"%s\" for writing", ofname);
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goto err_close_in;
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}
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errno = 0;
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fwrite(buf, buflen, 1, outfile);
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if (errno) {
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ERRS("unable to write to file %s", ofname);
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goto err_close_out;
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}
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res = EXIT_SUCCESS;
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out_flush:
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fflush(outfile);
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err_close_out:
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fclose(outfile);
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if (res != EXIT_SUCCESS) {
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unlink(ofname);
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}
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err_close_in:
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fclose(infile);
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err_free:
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free(buf);
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err:
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return res;
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}
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