1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "constant_common.h"
17#include <string>
18#include "parameter.h"
19
20namespace OHOS {
21namespace Security {
22namespace AccessToken {
23namespace {
24constexpr const char* REPLACE_TARGET = "****";
25constexpr const char* REPLACE_TARGET_LESS_THAN_MINLEN = "*******";
26} // namespace
27std::string ConstantCommon::EncryptDevId(std::string deviceId)
28{
29    std::string result = deviceId;
30    if (deviceId.empty()) {
31        return result;
32    }
33    if (deviceId.size() > MINDEVICEIDLEN) {
34        result.replace(ENCRYPTBEGIN + ENCRYPTLEN, deviceId.size() - MINDEVICEIDLEN, REPLACE_TARGET);
35    } else {
36        result.replace(ENCRYPTBEGIN + 1, deviceId.size()-1, REPLACE_TARGET_LESS_THAN_MINLEN);
37    }
38    return result;
39}
40
41std::string ConstantCommon::GetLocalDeviceId()
42{
43    static std::string localDeviceId;
44    if (!localDeviceId.empty()) {
45        return localDeviceId;
46    }
47    const int32_t DEVICE_UUID_LENGTH = 65;
48    char udid[DEVICE_UUID_LENGTH] = {0};
49    if (GetDevUdid(udid, DEVICE_UUID_LENGTH) == 0) {
50        localDeviceId = udid;
51    }
52    return localDeviceId;
53}
54} // namespace AccessToken
55} // namespace Security
56} // namespace OHOS