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