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