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 "formhostclient_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_host_client.h"
24 #undef private
25 #undef protected
26 #include "securec.h"
27
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 constexpr size_t FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)33 uint32_t GetU32Data(const char* ptr)
34 {
35 // convert fuzz input data to an integer
36 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
37 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)38 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
39 {
40 FormHostClient formHostClient;
41 std::shared_ptr<FormCallbackInterface> formCallback = nullptr;
42 int64_t formId = 1;
43 FormJsInfo formJsInfo;
44 formHostClient.AddForm(formCallback, formJsInfo);
45 formHostClient.RemoveForm(formCallback, formId);
46 formHostClient.ContainsForm(formId);
47 FormHostClient::UninstallCallback callback = nullptr;
48 formHostClient.RegisterUninstallCallback(callback);
49 sptr<IRemoteObject> token = nullptr;
50 formHostClient.OnAcquired(formJsInfo, token);
51 formHostClient.OnUpdate(formJsInfo);
52 std::vector<int64_t> formIds;
53 formIds.emplace_back(formId);
54 formHostClient.OnUninstall(formIds);
55 std::shared_ptr<ShareFormCallBack> shareFormCallback = nullptr;
56 int64_t requestCode = 1;
57 formHostClient.AddShareFormCallback(shareFormCallback, requestCode);
58 int32_t result = static_cast<int32_t>(GetU32Data(data));
59 formHostClient.OnShareFormResponse(requestCode, result);
60 formHostClient.RemoveShareFormCallback(requestCode);
61 formHostClient.UpdateForm(formJsInfo);
62 return formHostClient.GetInstance() == nullptr;
63 }
64 }
65
66 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)67 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
68 {
69 /* Run your code on data */
70 if (data == nullptr) {
71 return 0;
72 }
73
74 if (size < OHOS::U32_AT_SIZE) {
75 return 0;
76 }
77
78 /* Validate the length of size */
79 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
80 return 0;
81 }
82
83 char* ch = static_cast<char*>(malloc(size + 1));
84 if (ch == nullptr) {
85 return 0;
86 }
87
88 (void)memset_s(ch, size + 1, 0x00, size + 1);
89 if (memcpy_s(ch, size + 1, data, size) != EOK) {
90 free(ch);
91 ch = nullptr;
92 return 0;
93 }
94
95 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
96 free(ch);
97 ch = nullptr;
98 return 0;
99 }
100
101