firmware-utils: update to version 2021-10-05

[openwrt/openwrt.git] / tools / firmware-utils / src / nec-enc.c

diff --git a/tools/firmware-utils/src/nec-enc.c b/tools/firmware-utils/src/nec-enc.c
deleted file mode 100644 (file)
index a2be378..0000000
--- a/tools/firmware-utils/src/nec-enc.c
+++ /dev/null
@@ -1,129 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * nec-enc.c - encode/decode nec firmware with key
- *
- * based on xorimage.c in OpenWrt
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <unistd.h>
-
-#define KEY_LEN     16
-#define PATTERN_LEN 251
-
-static int
-xor_pattern(uint8_t *data, size_t len, const char *key, int k_len, int k_off)
-{
-       int offset = k_off;
-
-       while (len--) {
-               *data ^= key[offset];
-               data++;
-               offset = (offset + 1) % k_len;
-       }
-
-       return offset;
-}
-
-static void xor_data(uint8_t *data, size_t len, const uint8_t *pattern)
-{
-       for (int i = 0; i < len; i++) {
-               *data ^= pattern[i];
-               data++;
-       }
-}
-
-static void __attribute__((noreturn)) usage(void)
-{
-       fprintf(stderr, "Usage: nec-enc -i infile -o outfile -k <key>\n");
-       exit(EXIT_FAILURE);
-}
-
-static unsigned char buf_pattern[4096], buf[4096];
-
-int main(int argc, char **argv)
-{
-       int k_off = 0, ptn = 1, c, ret = EXIT_SUCCESS;
-       char *ifn = NULL, *ofn = NULL, *key = NULL;
-       size_t n, k_len;
-       FILE *out, *in;
-
-       while ((c = getopt(argc, argv, "i:o:k:h")) != -1) {
-               switch (c) {
-               case 'i':
-                       ifn = optarg;
-                       break;
-               case 'o':
-                       ofn = optarg;
-                       break;
-               case 'k':
-                       key = optarg;
-                       break;
-               case 'h':
-               default:
-                       usage();
-               }
-       }
-
-       if (optind != argc || optind == 1) {
-               fprintf(stderr, "illegal arg \"%s\"\n", argv[optind]);
-               usage();
-       }
-
-       in = fopen(ifn, "r");
-       if (!in) {
-               perror("can not open input file");
-               usage();
-       }
-
-       out = fopen(ofn, "w");
-       if (!out) {
-               perror("can not open output file");
-               usage();
-       }
-
-       if (!key) {
-               fprintf(stderr, "key is not specified\n");
-               usage();
-       }
-
-       k_len = strnlen(key, KEY_LEN + 1);
-       if (k_len == 0 || k_len > KEY_LEN) {
-               fprintf(stderr, "key length is not in range (0,%d)\n", KEY_LEN);
-               usage();
-       }
-
-       while ((n = fread(buf, 1, sizeof(buf), in)) > 0) {
-               for (int i = 0; i < n; i++) {
-                       buf_pattern[i] = ptn;
-                       ptn++;
-
-                       if (ptn > PATTERN_LEN)
-                               ptn = 1;
-               }
-
-               k_off = xor_pattern(buf_pattern, n, key, k_len, k_off);
-               xor_data(buf, n, buf_pattern);
-
-               if (fwrite(buf, 1, n, out) != n) {
-                       perror("failed to write");
-                       ret = EXIT_FAILURE;
-                       goto out;
-               }
-       }
-
-       if (ferror(in)) {
-               perror("failed to read");
-               ret = EXIT_FAILURE;
-               goto out;
-       }
-
-out:
-       fclose(in);
-       fclose(out);
-       return ret;
-}