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/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2025-2026 The TokTok team.
*/
#include "../toxencryptsave/toxencryptsave.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// ./decrypt_save <password> <encrypted input> <decrypted output>
int main(int argc, char *argv[])
{
if (argc != 4) {
printf("Usage: %s <password> <encrypted input> <decrypted output>\n", argv[0]);
return 1;
}
FILE *fp = fopen(argv[2], "rb");
if (!fp) {
printf("Could not open %s\n", argv[2]);
return 1;
}
fseek(fp, 0, SEEK_END);
size_t len = ftell(fp);
fseek(fp, 0, SEEK_SET);
uint8_t *data = (uint8_t *)malloc(len);
if (!data) {
printf("Could not allocate memory\n");
fclose(fp);
return 1;
}
if (fread(data, 1, len, fp) != len) {
printf("Could not read %s\n", argv[2]);
free(data);
fclose(fp);
return 1;
}
fclose(fp);
uint8_t *plaintext = (uint8_t *)malloc(len);
if (!plaintext) {
printf("Could not allocate memory\n");
free(data);
return 1;
}
Tox_Err_Decryption error;
if (!tox_pass_decrypt(data, len, (uint8_t *)argv[1], strlen(argv[1]), plaintext, &error)) {
printf("Could not decrypt: %s\n", tox_err_decryption_to_string(error));
free(data);
free(plaintext);
return 1;
}
fp = fopen(argv[3], "wb");
if (!fp) {
printf("Could not open %s\n", argv[3]);
free(data);
free(plaintext);
return 1;
}
if (fwrite(plaintext, 1, len - TOX_PASS_ENCRYPTION_EXTRA_LENGTH, fp) != len - TOX_PASS_ENCRYPTION_EXTRA_LENGTH) {
printf("Could not write %s\n", argv[3]);
free(data);
free(plaintext);
fclose(fp);
return 1;
}
free(data);
free(plaintext);
fclose(fp);
return 0;
}
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