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 }
74 int requestCode = static_cast<int>(GetU32Data(data));
75 abilityContext.StartAbility(*want, requestCode);
76 sptr<AAFwk::IAbilityConnection> conn = nullptr;
77 abilityContext.ConnectAbility(*want, conn);
78 abilityContext.StopAbility(*want);
79 std::string name(data, size);
80 int mode = static_cast<int>(GetU32Data(data));
81 abilityContext.GetDir(name, mode);
82 std::string bundleName(data, size);
83 int flag = static_cast<int>(GetU32Data(data));
84 int accountId = static_cast<int>(GetU32Data(data));
85 abilityContext.CreateBundleContext(bundleName, flag, accountId);
86 std::string permission(data, size);
87 int pid = static_cast<int>(GetU32Data(data));
88 int uid = static_cast<int>(GetU32Data(data));
89 abilityContext.VerifyPermission(permission, pid, uid);
90 std::string permissionName(data, size);
91 std::string des(data, size);
92 abilityContext.GetPermissionDes(permissionName, des);
93 std::vector<std::string> permissions;
94 std::string fileName(data, size);
95 std::string deviceId(data, size);
96 std::string abilityName(data, size);
97 std::string moduleName(data, size);
98 abilityContext.SetCallingContext(deviceId, bundleName, abilityName, moduleName);
99 std::shared_ptr<ContextDeal> base = nullptr;
100 abilityContext.AttachBaseContext(base);
101 std::string type(data, size);
102 abilityContext.GetExternalFilesDir(type);
103 std::string url(data, size);
104 Uri uri = Uri(url);
105 abilityContext.UnauthUriPermission(permission, uri, uid);
106 int patternId = static_cast<int>(GetU32Data(data));
107 abilityContext.SetPattern(patternId);
108 BundleInfo bundleInfo;
109 std::shared_ptr<ContextDeal> deal = nullptr;
110 abilityContext.InitResourceManager(bundleInfo, deal);
111 int resId = static_cast<int>(GetU32Data(data));
112 abilityContext.GetString(resId);
113 abilityContext.GetStringArray(resId);
114 abilityContext.GetIntArray(resId);
115 int themeId = static_cast<int>(GetU32Data(data));
116 abilityContext.SetTheme(themeId);
117 abilityContext.GetColor(resId);
118 abilityContext.SetColorMode(mode);
119 std::vector<AAFwk::Want> wants;
120 abilityContext.StartAbilities(wants);
121 return (abilityContext.DisconnectAbility(conn) == 0);
122 }
123 }
124
125 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)126 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
127 {
128 /* Run your code on data */
129 if (data == nullptr) {
130 std::cout << "invalid data" << std::endl;
131 return 0;
132 }
133
134 /* Validate the length of size */
135 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
136 return 0;
137 }
138
139 char* ch = (char*)malloc(size + 1);
140 if (ch == nullptr) {
141 std::cout << "malloc failed." << std::endl;
142 return 0;
143 }
144
145 (void)memset_s(ch, size + 1, 0x00, size + 1);
146 if (memcpy_s(ch, size, data, size) != EOK) {
147 std::cout << "copy failed." << std::endl;
148 free(ch);
149 ch = nullptr;
150 return 0;
151 }
152
153 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
154 free(ch);
155 ch = nullptr;
156 return 0;
157 }
158
159