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