+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <stdarg.h>
-#include <getopt.h>
-#include <string.h>
-#include <errno.h>
-
-#include <netinet/in.h> // htonl
-
-// Usage: mkdapimg [-p] [-m <model>] -s <sig> -i <input> -o <output>
-//
-// e.g.: mkdapimg -s RT3052-AP-DAP1350-3 -i sysupgrade.bin -o factory.bin
-//
-// If the model string <model> is not given, we will assume that
-// the leading characters upto the first "-" is the model.
-//
-// The "-p" (patch) option is used to patch the exisiting image with the
-// specified model and signature.
-// The "-x" (fix) option will recalculate the payload size and checksum
-// during the patch mode operation.
-
-// The img_hdr_struct was taken from the D-Link SDK:
-// DAP-1350_A1_FW1.11NA_GPL/GPL_Source_Code/Uboot/DAP-1350/httpd/header.h
-
-#define MAX_MODEL_NAME_LEN 20
-#define MAX_SIG_LEN 30
-#define MAX_REGION_LEN 4
-#define MAX_VERSION_LEN 12
-
-struct img_hdr_struct {
- uint32_t checksum;
- char model[MAX_MODEL_NAME_LEN];
- char sig[MAX_SIG_LEN];
- uint8_t partition;
- uint8_t hdr_len;
- uint8_t rsv1;
- uint8_t rsv2;
- uint32_t flash_byte_cnt;
-} imghdr ;
-
-char *progname;
-
-void
-perrexit(int code, char *msg)
-{
- fprintf(stderr, "%s: %s: %s\n", progname, msg, strerror(errno));
- exit(code);
-}
-
-void
-usage()
-{
- fprintf(stderr, "usage: %s [-p] [-m model] [-r region] [-v version] -s signature -i input -o output\n", progname);
- exit(1);
-}
-
-int
-main(int ac, char *av[])
-{
- char model[MAX_MODEL_NAME_LEN+1];
- char signature[MAX_SIG_LEN+1];
- char region[MAX_REGION_LEN+1];
- char version[MAX_VERSION_LEN+1];
- int patchmode = 0;
- int fixmode = 0;
- int have_regionversion = 0;
-
- FILE *ifile = NULL;
- FILE *ofile = NULL;
- int c;
- uint32_t cksum;
- uint32_t bcnt;
-
- progname = basename(av[0]);
- memset(model, 0, sizeof(model));
- memset(signature, 0, sizeof(signature));
- memset(region, 0, sizeof(region));
- memset(version, 0, sizeof(version));
-
- while ( 1 ) {
- int c;
-
- c = getopt(ac, av, "pxm:r:v:s:i:o:");
- if (c == -1)
- break;
-
- switch (c) {
- case 'p':
- patchmode = 1;
- break;
- case 'x':
- fixmode = 1;
- break;
- case 'm':
- if (strlen(optarg) > MAX_MODEL_NAME_LEN) {
- fprintf(stderr, "%s: model name exceeds %d chars\n",
- progname, MAX_MODEL_NAME_LEN);
- exit(1);
- }
- strcpy(model, optarg);
- break;
- case 'r':
- if (strlen(optarg) > MAX_REGION_LEN) {
- fprintf(stderr, "%s: region exceeds %d chars\n",
- progname, MAX_REGION_LEN);
- exit(1);
- }
- have_regionversion = 1;
- strcpy(region, optarg);
- break;
- case 'v':
- if (strlen(optarg) > MAX_VERSION_LEN) {
- fprintf(stderr, "%s: version exceeds %d chars\n",
- progname, MAX_VERSION_LEN);
- exit(1);
- }
- have_regionversion = 1;
- strcpy(version, optarg);
- break;
- case 's':
- if (strlen(optarg) > MAX_SIG_LEN) {
- fprintf(stderr, "%s: signature exceeds %d chars\n",
- progname, MAX_SIG_LEN);
- exit(1);
- }
- strcpy(signature, optarg);
- break;
- case 'i':
- if ((ifile = fopen(optarg, "r")) == NULL)
- perrexit(1, optarg);
- break;
- case 'o':
- if ((ofile = fopen(optarg, "w")) == NULL)
- perrexit(1, optarg);
- break;
- default:
- usage();
- }
- }
-
- if (signature[0] == 0 || ifile == NULL || ofile == NULL) {
- usage();
- }
-
- if (model[0] == 0) {
- char *p = strchr(signature, '-');
- if (p == NULL) {
- fprintf(stderr, "%s: model name unknown\n", progname);
- exit(1);
- }
- if (p - signature > MAX_MODEL_NAME_LEN) {
- *p = 0;
- fprintf(stderr, "%s: auto model name failed, string %s too long\n", progname, signature);
- exit(1);
- }
- strncpy(model, signature, p - signature);
- }
-
- if (patchmode) {
- if (fread(&imghdr, sizeof(imghdr), 1, ifile) < 0)
- perrexit(2, "fread on input");
- }
-
- for (bcnt = 0, cksum = 0 ; (c = fgetc(ifile)) != EOF ; bcnt++)
- cksum += c & 0xff;
-
- if (fseek(ifile, patchmode ? sizeof(imghdr) : 0, SEEK_SET) < 0)
- perrexit(2, "fseek on input");
-
- if (patchmode == 0) {
- // Fill in the header
- memset(&imghdr, 0, sizeof(imghdr));
- imghdr.checksum = htonl(cksum);
- imghdr.partition = 0 ; // don't care?
- imghdr.hdr_len = sizeof(imghdr);
- if (have_regionversion) {
- imghdr.hdr_len += MAX_REGION_LEN;
- imghdr.hdr_len += MAX_VERSION_LEN;
- }
- imghdr.flash_byte_cnt = htonl(bcnt);
- } else {
- if (ntohl(imghdr.checksum) != cksum) {
- fprintf(stderr, "%s: patch mode, checksum mismatch\n",
- progname);
- if (fixmode) {
- fprintf(stderr, "%s: fixing\n", progname);
- imghdr.checksum = htonl(cksum);
- } else
- exit(3);
- } else if (ntohl(imghdr.flash_byte_cnt) != bcnt) {
- fprintf(stderr, "%s: patch mode, size mismatch\n",
- progname);
- if (fixmode) {
- fprintf(stderr, "%s: fixing\n", progname);
- imghdr.flash_byte_cnt = htonl(bcnt);
- } else
- exit(3);
- }
- }
-
- strncpy(imghdr.model, model, MAX_MODEL_NAME_LEN);
- strncpy(imghdr.sig, signature, MAX_SIG_LEN);
-
- if (fwrite(&imghdr, sizeof(imghdr), 1, ofile) < 0)
- perrexit(2, "fwrite header on output");
- if (have_regionversion) {
- if (fwrite(®ion, MAX_REGION_LEN, 1, ofile) < 0)
- perrexit(2, "fwrite header on output");
- if (fwrite(&version, MAX_VERSION_LEN, 1, ofile) < 0)
- perrexit(2, "fwrite header on output");
- }
-
- while ((c = fgetc(ifile)) != EOF) {
- if (fputc(c, ofile) == EOF)
- perrexit(2, "fputc on output");
- }
-
- if (ferror(ifile))
- perrexit(2, "fgetc on input");
-
-
- fclose(ofile);
- fclose(ifile);
-}
projects / openwrt / staging / mkresin.git / blobdiff