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-rw-r--r--tools/firmware-utils/src/nec-enc.c129
1 files changed, 0 insertions, 129 deletions
diff --git a/tools/firmware-utils/src/nec-enc.c b/tools/firmware-utils/src/nec-enc.c
deleted file mode 100644
index a2be378586..0000000000
--- 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;
-}