crypto/ext4crypt/e4policyget.cpp

/*
 * Copyright (C) 2016 Team Win Recovery Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ext4crypt_tar.h"

#define EXT4_KEY_DESCRIPTOR_SIZE 8
#define EXT4_KEY_DESCRIPTOR_SIZE_HEX 17

int main(int argc, char *argv[]) {
	bool ret = false;
	if (argc != 2) {
		printf("Must specify a path\n");
		return -1;
	} else  {
		ext4_encryption_policy eep;
		if (e4crypt_policy_get_struct(argv[1], &eep, sizeof(eep))) {
			char policy_hex[EXT4_KEY_DESCRIPTOR_SIZE_HEX];
			policy_to_hex(eep.master_key_descriptor, policy_hex);
			printf("%s\n", policy_hex);
		} else {
			printf("No policy set\n");
		}
	}
	return 0;
}