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
17 #include "checkmessage_fuzzer.h"
18
19 #include "accesstoken_kit.h"
20 #include "if_system_ability_manager.h"
21 #include "iservice_registry.h"
22 #include "message_option.h"
23 #include "message_parcel.h"
24 #include "nativetoken_kit.h"
25 #include "system_ability_definition.h"
26 #include "token_setproc.h"
27 #include "hook_utils.h"
28
29 #define private public
30 #include "locator_ability.h"
31 #undef private
32
33 namespace OHOS {
34 const int32_t MAX_MEM_SIZE = 4 * 1024 * 1024;
35 const int32_t U32DATA_SIZE = 4;
36 const int32_t U64DATA_SIZE = 8;
37 const int32_t MIN_SIZE_NUM = 8;
38
39 namespace Location {
40
GetU32Data(const char * ptr)41 uint32_t GetU32Data(const char* ptr)
42 {
43 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
44 }
45
GetU64Data(const char * ptr)46 uint64_t GetU64Data(const char* ptr)
47 {
48 uint64_t u64data = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
49 return (u64data << 32) | (ptr[4] << 24) | (ptr[5] << 16) | (ptr[6] << 8) | (ptr[7]);
50 }
51
ParseData(const uint8_t * data,size_t size)52 char* ParseData(const uint8_t* data, size_t size)
53 {
54 if (data == nullptr) {
55 return nullptr;
56 }
57
58 if (size > MAX_MEM_SIZE) {
59 return nullptr;
60 }
61
62 char* ch = (char *)malloc(size + 1);
63 if (ch == nullptr) {
64 return nullptr;
65 }
66
67 (void)memset_s(ch, size + 1, 0x00, size + 1);
68 if (memcpy_s(ch, size, data, size) != EOK) {
69 free(ch);
70 ch = nullptr;
71 return nullptr;
72 }
73 return ch;
74 }
75
CheckMessageFuzzTest(const char * data,size_t size)76 bool CheckMessageFuzzTest(const char* data, size_t size)
77 {
78 MessageParcel reply;
79 AppIdentity identity;
80 int offset = 0;
81 if (size <= 32) {
82 return true;
83 }
84 identity.SetPid(static_cast<pid_t>(GetU64Data(data)));
85 identity.SetUid(static_cast<pid_t>(GetU64Data(data + (offset += U64DATA_SIZE))));
86 identity.SetTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
87 identity.SetTokenIdEx(GetU64Data(data + (offset += U32DATA_SIZE)));
88 identity.SetFirstTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
89 identity.SetBundleName(data + (offset += U32DATA_SIZE));
90
91 auto locatorAbility = sptr<LocatorAbility>(new (std::nothrow) LocatorAbility());
92 locatorAbility->CheckLocationPermission(identity.GetTokenId(), identity.GetFirstTokenId());
93 locatorAbility->CheckPreciseLocationPermissions(identity.GetTokenId(), identity.GetFirstTokenId());
94 locatorAbility->CheckLocationSwitchState();
95 return true;
96 }
97
HookUtilFuzzTest(const char * data,size_t size)98 bool HookUtilFuzzTest(const char* data, size_t size)
99 {
100 MessageParcel reply;
101 AppIdentity identity;
102 int offset = 0;
103 if (size <= 32) {
104 return true;
105 }
106 std::string testString = data + (offset += U32DATA_SIZE);
107 std::shared_ptr<Request> request = std::make_shared<Request>();
108 std::unique_ptr<Location> location = std::make_unique<Location>();
109 std::vector<std::string> names;
110 std::vector<std::string> values;
111 HookUtils::ExecuteHookWhenStartLocation(request);
112 HookUtils::ExecuteHookWhenStopLocation(request);
113 HookUtils::ExecuteHookWhenGetAddressFromLocation(testString);
114 HookUtils::ExecuteHookWhenGetAddressFromLocationName(testString);
115 HookUtils::ExecuteHookWhenReportInnerInfo(0, names, values);
116 HookUtils::ExecuteHookWhenAddWorkRecord(false, false, testString, testString);
117
118 HookUtils::CheckGnssLocationValidity(location);
119 HookUtils::ExecuteHookWhenCheckAppForUser(testString);
120 HookUtils::ExecuteHookReportManagerGetCacheLocation(testString, 0);
121 HookUtils::ExecuteHookEnableAbility(testString, false, 0);
122 HookUtils::ExecuteHookWhenPreStartLocating(testString);
123 HookUtils::ExecuteHookWhenAddNetworkRequest(testString);
124 HookUtils::ExecuteHookWhenRemoveNetworkRequest(testString);
125 int test = 0;
126 HookUtils::ExecuteHookWhenSetAgnssServer(testString, test);
127 HookUtils::ExecuteHookWhenSimStateChange(testString);
128 HookUtils::ExecuteHookWhenReportBluetoothScanResult(testString, testString);
129 HookUtils::ExecuteHookWhenStartScanBluetoothDevice(testString, testString);
130 std::vector<std::shared_ptr<LocatingRequiredData>> result;
131 HookUtils::ExecuteHookWhenWifiScanStateChanged(result);
132 HookUtils::ExecuteHookWhenCustConfigPolicyChange();
133 return true;
134 }
135 }
136 } // namespace OHOS
137
138 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)139 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
140 {
141 if (size < OHOS::MIN_SIZE_NUM) {
142 return 0;
143 }
144 char* ch = OHOS::Location::ParseData(data, size);
145 if (ch != nullptr) {
146 OHOS::Location::CheckMessageFuzzTest(ch, size);
147 OHOS::Location::HookUtilFuzzTest(ch, size);
148 free(ch);
149 ch = nullptr;
150 }
151 return 0;
152 }
153
154