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
28 #define private public
29 #include "locator_ability.h"
30 #undef private
31
32 namespace OHOS {
33 using namespace OHOS::Location;
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
GetU32Data(const char * ptr)40 uint32_t GetU32Data(const char* ptr)
41 {
42 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
43 }
44
GetU64Data(const char * ptr)45 uint64_t GetU64Data(const char* ptr)
46 {
47 uint64_t u64data = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
48 return (u64data << 32) | (ptr[4] << 24) | (ptr[5] << 16) | (ptr[6] << 8) | (ptr[7]);
49 }
50
ParseData(const uint8_t * data,size_t size)51 char* ParseData(const uint8_t* data, size_t size)
52 {
53 if (data == nullptr) {
54 return nullptr;
55 }
56
57 if (size > MAX_MEM_SIZE) {
58 return nullptr;
59 }
60
61 char* ch = (char *)malloc(size + 1);
62 if (ch == nullptr) {
63 return nullptr;
64 }
65
66 (void)memset_s(ch, size + 1, 0x00, size + 1);
67 if (memcpy_s(ch, size, data, size) != EOK) {
68 free(ch);
69 ch = nullptr;
70 return nullptr;
71 }
72 return ch;
73 }
74
CheckMessageFuzzTest(const char * data,size_t size)75 bool CheckMessageFuzzTest(const char* data, size_t size)
76 {
77 MessageParcel reply;
78 AppIdentity identity;
79 int offset = 0;
80 if (size <= 32) {
81 return true;
82 }
83 identity.SetPid(static_cast<pid_t>(GetU64Data(data)));
84 identity.SetUid(static_cast<pid_t>(GetU64Data(data + (offset += U64DATA_SIZE))));
85 identity.SetTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
86 identity.SetTokenIdEx(GetU64Data(data + (offset += U32DATA_SIZE)));
87 identity.SetFirstTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
88 identity.SetBundleName(data + (offset += U32DATA_SIZE));
89
90 auto locatorAbility = sptr<LocatorAbility>(new (std::nothrow) LocatorAbility());
91 locatorAbility->CheckLocationPermission(reply, identity);
92 locatorAbility->CheckSettingsPermission(reply, identity);
93 locatorAbility->CheckPreciseLocationPermissions(reply, identity);
94 locatorAbility->CheckLocationSwitchState(reply);
95 return true;
96 }
97 } // namespace OHOS
98
99 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)100 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
101 {
102 if (size < OHOS::MIN_SIZE_NUM) {
103 return 0;
104 }
105 char* ch = OHOS::ParseData(data, size);
106 if (ch != nullptr) {
107 OHOS::CheckMessageFuzzTest(ch, size);
108 free(ch);
109 ch = nullptr;
110 }
111 return 0;
112 }
113
114