1 /*
2 * Copyright (c) 2024-2025 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 "privacy_controller.h"
17
18 #include "bundle_mgr_client.h"
19 #include "hiview_logger.h"
20 #include "plugin_factory.h"
21 #include "privacy_manager.h"
22 #include "string_util.h"
23
24 namespace OHOS {
25 namespace HiviewDFX {
26 namespace {
27 REGISTER(PrivacyController);
28 DEFINE_LOG_TAG("PrivacyController");
29 constexpr uint8_t THROW_TYPE_EVENT = 1;
30
IsPreInstallApp(const std::string & bundleName)31 bool IsPreInstallApp(const std::string& bundleName)
32 {
33 AppExecFwk::BundleInfo info;
34 AppExecFwk::BundleMgrClient client;
35 if (!client.GetBundleInfo(bundleName, AppExecFwk::BundleFlag::GET_BUNDLE_DEFAULT, info,
36 AppExecFwk::Constants::ALL_USERID)) {
37 return false;
38 }
39 return info.isPreInstallApp;
40 }
41 }
42
IsBundleNameAllow(const std::string & bundleName,const std::string & allowListFile)43 bool PrivacyController::IsBundleNameAllow(const std::string& bundleName, const std::string& allowListFile)
44 {
45 if (bundleName.empty()) {
46 return true;
47 }
48 if (PrivacyManager::IsBundleNameInList(bundleName, allowListFile)) {
49 return true;
50 }
51 // name of pre-installed bundle is always allowed
52 return IsPreInstallApp(bundleName);
53 }
54
IsValidParam(std::shared_ptr<SysEvent> & sysEvent,const std::string & paramName,const std::string & allowListFile)55 bool PrivacyController::IsValidParam(std::shared_ptr<SysEvent>& sysEvent,
56 const std::string& paramName, const std::string& allowListFile)
57 {
58 std::vector<std::string> values;
59 if (sysEvent->GetEventStringArrayValue(paramName, values)) {
60 bool isNeedHideParam = false;
61 for (auto& value : values) {
62 if (!IsBundleNameAllow(value, allowListFile)) {
63 value = "*";
64 isNeedHideParam = true;
65 }
66 }
67 if (isNeedHideParam) {
68 sysEvent->SetEventValue(paramName, values);
69 }
70 return true;
71 } else {
72 return IsBundleNameAllow(sysEvent->GetEventValue(paramName), allowListFile);
73 }
74 }
75
OnLoad()76 void PrivacyController::OnLoad()
77 {
78 HIVIEW_LOGI("load privacy controller.");
79 }
80
OnEvent(std::shared_ptr<Event> & event)81 bool PrivacyController::OnEvent(std::shared_ptr<Event>& event)
82 {
83 auto sysEvent = std::static_pointer_cast<SysEvent>(event);
84 if (sysEvent == nullptr) {
85 return false;
86 }
87 PARAM_INFO_MAP_PTR invalidParams = sysEvent->GetInvalidParams();
88 if (invalidParams == nullptr || invalidParams->empty()) {
89 return true;
90 }
91 std::string droppedParam;
92 for (const auto& iter : *invalidParams) {
93 if (!sysEvent->IsParamExist(iter.first)) {
94 // param not exist in this event, no need check
95 continue;
96 }
97 if (iter.second != nullptr) {
98 if (IsValidParam(sysEvent, iter.first, iter.second->allowListFile)) {
99 continue;
100 }
101 if (iter.second->throwType == THROW_TYPE_EVENT) {
102 HIVIEW_LOGI("event[%{public}s|%{public}s|%{public}s] is not allowed",
103 sysEvent->domain_.c_str(), sysEvent->eventName_.c_str(), iter.first.c_str());
104 return sysEvent->OnFinish();
105 }
106 }
107 // remove the param from event and record it
108 sysEvent->RemoveParam(iter.first);
109 if (!droppedParam.empty()) {
110 droppedParam.append(",");
111 }
112 droppedParam.append(iter.first);
113 }
114 if (!droppedParam.empty()) {
115 sysEvent->SetEventValue("DroppedParam", droppedParam);
116 }
117 return true;
118 }
119 } // namespace HiviewDFX
120 } // namespace OHOS
121