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 #include "abilitycontext_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_record.h"
22 #define private public
23 #include "ability_context.h"
24 #undef private
25 #include "want.h"
26 #include "parcel.h"
27 #include "securec.h"
28
29 using namespace OHOS::AAFwk;
30 using namespace OHOS::AppExecFwk;
31
32 namespace OHOS {
33 namespace {
34 constexpr int INPUT_ZERO = 0;
35 constexpr int INPUT_ONE = 1;
36 constexpr int INPUT_TWO = 2;
37 constexpr int INPUT_THREE = 3;
38 constexpr size_t FOO_MAX_LEN = 1024;
39 constexpr size_t OFFSET_ZERO = 24;
40 constexpr size_t OFFSET_ONE = 16;
41 constexpr size_t OFFSET_TWO = 8;
42 constexpr size_t U32_AT_SIZE = 4;
43 }
GetU32Data(const char * ptr)44 uint32_t GetU32Data(const char* ptr)
45 {
46 // convert fuzz input data to an integer
47 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
48 ptr[INPUT_THREE];
49 }
GetFuzzAbilityToken()50 sptr<Token> GetFuzzAbilityToken()
51 {
52 sptr<Token> token = nullptr;
53
54 AbilityRequest abilityRequest;
55 abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
56 abilityRequest.abilityInfo.name = "MainAbility";
57 abilityRequest.abilityInfo.type = AbilityType::PAGE;
58 std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
59 if (abilityRecord) {
60 token = abilityRecord->GetToken();
61 }
62
63 return token;
64 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)65 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
66 {
67 AbilityContext abilityContext;
68 // fuzz for want
69 Parcel wantParcel;
70 Want* want = nullptr;
71 if (wantParcel.WriteBuffer(data, size)) {
72 want = Want::Unmarshalling(wantParcel);
73 if (!want) {
74 return false;
75 }
76 }
77 int requestCode = static_cast<int>(GetU32Data(data));
78 abilityContext.StartAbility(*want, requestCode);
79 sptr<AAFwk::IAbilityConnection> conn = nullptr;
80 abilityContext.ConnectAbility(*want, conn);
81 abilityContext.StopAbility(*want);
82 std::string name(data, size);
83 int mode = static_cast<int>(GetU32Data(data));
84 abilityContext.GetDir(name, mode);
85 std::string bundleName(data, size);
86 int flag = static_cast<int>(GetU32Data(data));
87 int accountId = static_cast<int>(GetU32Data(data));
88 abilityContext.CreateBundleContext(bundleName, flag, accountId);
89 std::string permission(data, size);
90 int pid = static_cast<int>(GetU32Data(data));
91 int uid = static_cast<int>(GetU32Data(data));
92 abilityContext.VerifyPermission(permission, pid, uid);
93 std::string permissionName(data, size);
94 std::string des(data, size);
95 abilityContext.GetPermissionDes(permissionName, des);
96 std::vector<std::string> permissions;
97 std::string fileName(data, size);
98 std::string deviceId(data, size);
99 std::string abilityName(data, size);
100 std::string moduleName(data, size);
101 abilityContext.SetCallingContext(deviceId, bundleName, abilityName, moduleName);
102 std::shared_ptr<ContextDeal> base = nullptr;
103 abilityContext.AttachBaseContext(base);
104 std::string type(data, size);
105 abilityContext.GetExternalFilesDir(type);
106 std::string url(data, size);
107 Uri uri = Uri(url);
108 abilityContext.UnauthUriPermission(permission, uri, uid);
109 int patternId = static_cast<int>(GetU32Data(data));
110 abilityContext.SetPattern(patternId);
111 BundleInfo bundleInfo;
112 std::shared_ptr<ContextDeal> deal = nullptr;
113 abilityContext.InitResourceManager(bundleInfo, deal);
114 int resId = static_cast<int>(GetU32Data(data));
115 abilityContext.GetString(resId);
116 abilityContext.GetStringArray(resId);
117 abilityContext.GetIntArray(resId);
118 int themeId = static_cast<int>(GetU32Data(data));
119 abilityContext.SetTheme(themeId);
120 abilityContext.GetColor(resId);
121 abilityContext.SetColorMode(mode);
122 std::vector<AAFwk::Want> wants;
123 abilityContext.StartAbilities(wants);
124 if (want) {
125 delete want;
126 want = nullptr;
127 }
128 return (abilityContext.DisconnectAbility(conn) == 0);
129 }
130 }
131
132 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)133 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
134 {
135 /* Run your code on data */
136 if (data == nullptr) {
137 std::cout << "invalid data" << std::endl;
138 return 0;
139 }
140
141 /* Validate the length of size */
142 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
143 return 0;
144 }
145
146 char* ch = static_cast<char*>(malloc(size + 1));
147 if (ch == nullptr) {
148 std::cout << "malloc failed." << std::endl;
149 return 0;
150 }
151
152 (void)memset_s(ch, size + 1, 0x00, size + 1);
153 if (memcpy_s(ch, size, data, size) != EOK) {
154 std::cout << "copy failed." << std::endl;
155 free(ch);
156 ch = nullptr;
157 return 0;
158 }
159
160 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
161 free(ch);
162 ch = nullptr;
163 return 0;
164 }
165
166