+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2014 Gabor Juhos <juhosg@openwrt.org>
- */
-
-#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 <errno.h>
-#include <sys/stat.h>
-
-#include <arpa/inet.h>
-#include <netinet/in.h>
-
-#define MAX_MAGIC_LEN 16
-#define MAX_MODEL_LEN 32
-#define MAX_VERSION_LEN 14
-#define MAX_MTD_NAME_LEN 16
-
-#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
-
-struct edimax_header {
- char magic[MAX_MAGIC_LEN];
- char model[MAX_MODEL_LEN];
- unsigned char force;
- unsigned char header_csum;
- unsigned char data_csum;
- uint32_t data_size;
- uint32_t start_addr;
- uint32_t end_addr;
- char fw_version[MAX_VERSION_LEN];
- unsigned char type;
- char mtd_name[MAX_MTD_NAME_LEN];
-} __attribute__ ((packed));
-
-/*
- * Globals
- */
-static char *ofname;
-static char *ifname;
-static char *progname;
-
-static char *model;
-static char *magic = "eDiMaX";
-static char *fw_version = "";
-static char *mtd_name;
-static int force;
-static uint32_t start_addr;
-static uint32_t end_addr;
-static uint8_t image_type;
-static int data_size;
-
-/*
- * Message macros
- */
-#define ERR(fmt, ...) do { \
- fflush(0); \
- fprintf(stderr, "[%s] *** error: " fmt "\n", \
- progname, ## __VA_ARGS__ ); \
-} while (0)
-
-#define ERRS(fmt, ...) do { \
- int save = errno; \
- fflush(0); \
- fprintf(stderr, "[%s] *** error: " fmt " (%s)\n", \
- progname, ## __VA_ARGS__, strerror(save)); \
-} while (0)
-
-#define DBG(fmt, ...) do { \
- fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
-} while (0)
-
-static void usage(int status)
-{
- FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
-
- fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
- fprintf(stream,
-"\n"
-"Options:\n"
-" -e <addr> set end addr to <addr>\n"
-" -f set force flag\n"
-" -h show this screen\n"
-" -i <file> read input data from the file <file>\n"
-" -o <file> write output to the file <file>\n"
-" -m <model> set model to <model>\n"
-" -M <magic> set image magic to <magic>\n"
-" -n <name> set MTD device name to <name>\n"
-" -s <addr> set start address to <addr>\n"
-" -t <type> set image type to <type>\n"
-" -v <version> set firmware version to <version>\n"
- );
-
- exit(status);
-}
-
-int
-str2u32(char *arg, uint32_t *val)
-{
- char *err = NULL;
- uint32_t t;
-
- errno=0;
- t = strtoul(arg, &err, 0);
- if (errno || (err==arg) || ((err != NULL) && *err)) {
- return -1;
- }
-
- *val = t;
- return 0;
-}
-
-int
-str2u8(char *arg, uint8_t *val)
-{
- char *err = NULL;
- uint32_t t;
-
- errno=0;
- t = strtoul(arg, &err, 0);
- if (errno || (err==arg) || ((err != NULL) && *err) || (t >= 0x100)) {
- return -1;
- }
-
- *val = t & 0xFF;
- return 0;
-}
-
-static int get_file_size(char *name)
-{
- struct stat st;
- int res;
-
- res = stat(name, &st);
- if (res){
- ERRS("stat failed on %s", name);
- return -1;
- }
-
- return st.st_size;
-}
-
-static int read_to_buf(char *name, char *buf, int buflen)
-{
- FILE *f;
- int ret = EXIT_FAILURE;
-
- f = fopen(name, "r");
- if (f == NULL) {
- ERRS("could not open \"%s\" for reading", name);
- goto out;
- }
-
- errno = 0;
- fread(buf, buflen, 1, f);
- if (errno != 0) {
- ERRS("unable to read from file \"%s\"", name);
- goto out_close;
- }
-
- ret = EXIT_SUCCESS;
-
-out_close:
- fclose(f);
-out:
- return ret;
-}
-
-static int check_options(void)
-{
-#define CHKSTR(_name, _msg) \
- do { \
- if (_name == NULL) { \
- ERR("no %s specified", _msg); \
- return -1; \
- } \
- } while (0)
-
-#define CHKSTRLEN(_name, _msg) \
- do { \
- int field_len; \
- CHKSTR(_name, _msg); \
- field_len = FIELD_SIZEOF(struct edimax_header, _name) - 1; \
- if (strlen(_name) > field_len) { \
- ERR("'%s' is too long, max %s length is %d", \
- _name, _msg, field_len); \
- return -1; \
- } \
- } while (0)
-
- CHKSTR(ofname, "output file");
- CHKSTR(ifname, "input file");
-
- CHKSTRLEN(magic, "magic");
- CHKSTRLEN(model, "model");
- CHKSTRLEN(mtd_name, "MTD device name");
- CHKSTRLEN(fw_version, "firware version");
-
- data_size = get_file_size(ifname);
- if (data_size < 0)
- return -1;
-
- return 0;
-}
-
-static int write_fw(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;
-}
-
-static unsigned char checksum(unsigned char *p, unsigned len)
-{
- unsigned char csum = 0;
-
- while (len--)
- csum += *p++;
-
- csum ^= 0xb9;
-
- return csum;
-}
-
-static int build_fw(void)
-{
- int buflen;
- char *buf;
- char *data;
- struct edimax_header *hdr;
- int ret = EXIT_FAILURE;
-
- buflen = sizeof(struct edimax_header) + data_size;
-
- buf = malloc(buflen);
- if (!buf) {
- ERR("no memory for buffer\n");
- goto out;
- }
-
- data = buf + sizeof(struct edimax_header);
-
- /* read input file */
- ret = read_to_buf(ifname, data, data_size);
- if (ret)
- goto out_free_buf;
-
- /* fill firmware header */
- hdr = (struct edimax_header *)buf;
- memset(hdr, 0, sizeof(struct edimax_header));
-
- strncpy(hdr->model, model, sizeof(hdr->model));
- strncpy(hdr->magic, magic, sizeof(hdr->magic));
- strncpy(hdr->fw_version, fw_version, sizeof(hdr->fw_version));
- strncpy(hdr->mtd_name, mtd_name, sizeof(hdr->mtd_name));
-
- hdr->force = force;
- hdr->start_addr = htonl(start_addr);
- hdr->end_addr = htonl(end_addr);
- hdr->data_size = htonl(data_size);
- hdr->type = image_type;
-
- hdr->data_csum = checksum((unsigned char *)data, data_size);
- hdr->header_csum = checksum((unsigned char *)hdr,
- sizeof(struct edimax_header));
-
- ret = write_fw(buf, buflen);
- if (ret)
- goto out_free_buf;
-
- ret = EXIT_SUCCESS;
-
-out_free_buf:
- free(buf);
-out:
- return ret;
-}
-
-int main(int argc, char *argv[])
-{
- int ret = EXIT_FAILURE;
-
- progname = basename(argv[0]);
-
- while (1) {
- int c;
-
- c = getopt(argc, argv, "e:fhi:o:m:M:n:s:t:v:");
- if (c == -1)
- break;
-
- switch (c) {
- case 'e':
- if (str2u32(optarg, &end_addr)) {
- ERR("%s is invalid '%s'",
- "end address", optarg);
- goto out;
- }
- break;
- case 'f':
- force = 1;
- break;
- case 'i':
- ifname = optarg;
- break;
- case 'h':
- usage(EXIT_SUCCESS);
- break;
- case 'o':
- ofname = optarg;
- break;
- case 'm':
- model = optarg;
- break;
- case 'M':
- magic = optarg;
- break;
- case 'n':
- mtd_name = optarg;
- break;
- case 's':
- if (str2u32(optarg, &start_addr)) {
- ERR("%s is invalid '%s'",
- "start address", optarg);
- goto out;
- }
- break;
- case 't':
- if (str2u8(optarg, &image_type)) {
- ERR("%s is invalid '%s'",
- "image type", optarg);
- goto out;
- }
- break;
- case 'v':
- fw_version = optarg;
- break;
- default:
- usage(EXIT_FAILURE);
- break;
- }
- }
-
- ret = check_options();
- if (ret)
- goto out;
-
- ret = build_fw();
-
-out:
- return ret;
-}
projects / openwrt / openwrt.git / blobdiff