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 "device_profile_utils.h"
17
18 #include <list>
19 #include <string>
20
21 #include "parcel.h"
22 #include "parcel_helper.h"
23
24 namespace OHOS {
25 namespace DeviceProfile {
26 namespace {
27 const std::string TAG = "DeviceProfileUtils";
28
29 constexpr int32_t NON_ANONYMIZED_LENGTH = 6;
30 constexpr uint32_t MAX_EVENT_LEN = 1000000;
31 const std::string EMPTY_DEVICE_ID = "";
32 }
33
WriteProfileEvents(const std::list<ProfileEvent> & profileEvents,Parcel & parcel)34 bool DeviceProfileUtils::WriteProfileEvents(const std::list<ProfileEvent>& profileEvents, Parcel& parcel)
35 {
36 size_t size = profileEvents.size();
37 PARCEL_WRITE_HELPER_RET(parcel, Uint32, static_cast<uint32_t>(size), false);
38 for (auto profileEvent : profileEvents) {
39 PARCEL_WRITE_HELPER_RET(parcel, Uint32, static_cast<uint32_t>(profileEvent), false);
40 }
41 return true;
42 }
43
ReadProfileEvents(Parcel & parcel,std::list<ProfileEvent> & profileEvents)44 bool DeviceProfileUtils::ReadProfileEvents(Parcel& parcel, std::list<ProfileEvent>& profileEvents)
45 {
46 uint32_t numEvents = parcel.ReadUint32();
47 if (numEvents > MAX_EVENT_LEN) {
48 return false;
49 }
50
51 for (uint32_t i = 0; i < numEvents; i++) {
52 ProfileEvent profileEvent = static_cast<ProfileEvent>(parcel.ReadUint32());
53 if (profileEvent >= EVENT_PROFILE_END || profileEvent == EVENT_UNKNOWN) {
54 return false;
55 }
56 profileEvents.emplace_back(profileEvent);
57 }
58 return true;
59 }
60
AnonymizeDeviceId(const std::string & deviceId)61 std::string DeviceProfileUtils::AnonymizeDeviceId(const std::string& deviceId)
62 {
63 if (deviceId.length() < NON_ANONYMIZED_LENGTH) {
64 return EMPTY_DEVICE_ID;
65 }
66 std::string anonDeviceId = deviceId.substr(0, NON_ANONYMIZED_LENGTH);
67 anonDeviceId.append("******");
68 return anonDeviceId;
69 }
70
AnonymizeString(const std::string & value)71 std::string DeviceProfileUtils::AnonymizeString(const std::string& value)
72 {
73 constexpr size_t INT32_SHORT_ID_LENGTH = 20;
74 constexpr size_t INT32_PLAINTEXT_LENGTH = 4;
75 constexpr size_t INT32_MIN_ID_LENGTH = 3;
76 std::string res;
77 std::string tmpStr("******");
78 size_t strLen = value.length();
79 if (strLen < INT32_MIN_ID_LENGTH) {
80 return tmpStr;
81 }
82
83 if (strLen <= INT32_SHORT_ID_LENGTH) {
84 res += value[0];
85 res += tmpStr;
86 res += value[strLen - 1];
87 } else {
88 res.append(value, 0, INT32_PLAINTEXT_LENGTH);
89 res += tmpStr;
90 res.append(value, strLen - INT32_PLAINTEXT_LENGTH, INT32_PLAINTEXT_LENGTH);
91 }
92 return res;
93 }
94 } // namespace DeviceProfile
95 } // namespace OHOS
96