1 /*
2 * Copyright (c) 2023 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 "formrenderserviceextension_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_render_service_extension.h"
24 #undef private
25 #undef protected
26 #include "message_parcel.h"
27 #include "securec.h"
28
29 using namespace OHOS::AppExecFwk;
30 using namespace OHOS::AbilityRuntime;
31
32 namespace OHOS {
33 constexpr size_t FOO_MAX_LEN = 1024;
34 constexpr size_t U32_AT_SIZE = 4;
35 constexpr uint8_t ENABLE = 2;
GetU32Data(const char * ptr)36 uint32_t GetU32Data(const char* ptr)
37 {
38 // convert fuzz input data to an integer
39 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
40 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)41 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
42 {
43 std::unique_ptr<Runtime> runtime = nullptr;
44 auto formRenderServiceExtension = FormRenderServiceExtension::Create(runtime);
45 if (formRenderServiceExtension == nullptr) {
46 return false;
47 }
48 std::shared_ptr<AbilityLocalRecord> record = nullptr;
49 std::shared_ptr<OHOSApplication> application = nullptr;
50 std::shared_ptr<AbilityHandler> handler = nullptr;
51 sptr<IRemoteObject> token = nullptr;
52 formRenderServiceExtension->Init(record, application, handler, token);
53 AAFwk::Want want;
54 bool restart = *data % ENABLE;
55 int startId = static_cast<int64_t>(GetU32Data(data));
56 formRenderServiceExtension->OnCommand(want, restart, startId);
57 return true;
58 }
59 }
60
61 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)62 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
63 {
64 /* Run your code on data */
65 if (data == nullptr) {
66 return 0;
67 }
68
69 if (size < OHOS::U32_AT_SIZE) {
70 return 0;
71 }
72
73 /* Validate the length of size */
74 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
75 return 0;
76 }
77
78 char* ch = (char *)malloc(size + 1);
79 if (ch == nullptr) {
80 return 0;
81 }
82
83 (void)memset_s(ch, size + 1, 0x00, size + 1);
84 if (memcpy_s(ch, size, data, size) != EOK) {
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89
90 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
91 free(ch);
92 ch = nullptr;
93 return 0;
94 }
95
96