1/*
2 * Copyright (c) 2021-2024 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 "anonymous_string.h"
17
18#include <cstddef>
19#include <string>
20
21#include "constants.h"
22#include "dh_utils_tool.h"
23#include "distributed_hardware_errno.h"
24#include "distributed_hardware_log.h"
25#include "securec.h"
26
27namespace OHOS {
28namespace DistributedHardware {
29namespace {
30    constexpr size_t INT32_SHORT_ID_LENGTH = 20;
31    constexpr size_t INT32_PLAINTEXT_LENGTH = 4;
32    constexpr size_t INT32_MIN_ID_LENGTH = 3;
33    constexpr int32_t INT32_STRING_LENGTH = 40;
34}
35std::string GetAnonyString(const std::string &value)
36{
37    if (!IsMessageLengthValid(value)) {
38        return "";
39    }
40    std::string res;
41    std::string tmpStr("******");
42    size_t strLen = value.length();
43    if (strLen < INT32_MIN_ID_LENGTH) {
44        return tmpStr;
45    }
46
47    if (strLen <= INT32_SHORT_ID_LENGTH) {
48        res += value[0];
49        res += tmpStr;
50        res += value[strLen - 1];
51    } else {
52        res.append(value, 0, INT32_PLAINTEXT_LENGTH);
53        res += tmpStr;
54        res.append(value, strLen - INT32_PLAINTEXT_LENGTH, INT32_PLAINTEXT_LENGTH);
55    }
56
57    return res;
58}
59
60std::string GetAnonyInt32(const int32_t value)
61{
62    char tempBuffer[INT32_STRING_LENGTH] = "";
63    int32_t secRet = sprintf_s(tempBuffer, INT32_STRING_LENGTH, "%d", value);
64    if (secRet <= 0) {
65        std::string nullString("");
66        return nullString;
67    }
68    size_t length = strlen(tempBuffer);
69    if (length < 1) {
70        std::string nullString("");
71        return nullString;
72    }
73    for (size_t i = 1; i <= length - 1; i++) {
74        tempBuffer[i] = '*';
75    }
76    if (length == 0x01) {
77        tempBuffer[0] = '*';
78    }
79
80    std::string tempString(tempBuffer);
81    return tempString;
82}
83} // namespace DistributedHardware
84} // namespace OHOS
85