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 "formutil_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "form_util.h"
22 #define private public
23 #define protected public
24 #include "free_install_status_callback_proxy.h"
25 #include "free_install_status_callback_stub.h"
26 #undef private
27 #undef protected
28 #include "securec.h"
29
30 using namespace OHOS::AppExecFwk;
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;
36 class FreeInstallStatusCallBackStubFuzzTest : public FreeInstallStatusCallBackStub {
37 public:
38 FreeInstallStatusCallBackStubFuzzTest() = default;
39 virtual ~FreeInstallStatusCallBackStubFuzzTest() = default;
OnInstallFinished(int32_t resultCode,const Want & want,int32_t userId)40 void OnInstallFinished(int32_t resultCode, const Want &want, int32_t userId) override
41 {}
42 };
GetU32Data(const char * ptr)43 uint32_t GetU32Data(const char* ptr)
44 {
45 // convert fuzz input data to an integer
46 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
47 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)48 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
49 {
50 FormUtil formUtil;
51 std::string formName(data, size);
52 int32_t specificationId = static_cast<int32_t>(GetU32Data(data));
53 bool isTemporaryForm = *data % ENABLE;
54 Want want;
55 formUtil.CreateFormWant(formName, specificationId, isTemporaryForm, want);
56 std::string uri(data, size);
57 int32_t connectId = static_cast<int32_t>(GetU32Data(data));
58 formUtil.CreateDefaultFormWant(want, uri, connectId);
59 formUtil.GenerateUdid();
60 int64_t udidHash = static_cast<int64_t>(GetU32Data(data));
61 formUtil.GenerateFormId(udidHash);
62 uint64_t formId = static_cast<uint64_t>(GetU32Data(data));
63 uint64_t udidHashs = static_cast<uint64_t>(GetU32Data(data));
64 formUtil.PaddingUdidHash(formId, udidHashs);
65 formUtil.GetCurrentNanosecond();
66 formUtil.GetCurrentMillisecond();
67 formUtil.GetCurrentAccountId();
68 sptr<IRemoteObject> impl = nullptr;
69 FreeInstallStatusCallBackProxy freeInstallStatusCallBackProxy(impl);
70 FreeInstallStatusCallBackStubFuzzTest freeInstallStatusCallBackStubFuzzTest;
71 MessageParcel datas;
72 MessageParcel reply;
73 freeInstallStatusCallBackStubFuzzTest.OnInstallFinishedInner(datas, reply);
74 uint32_t code = static_cast<uint32_t>(GetU32Data(data));
75 MessageOption option;
76 freeInstallStatusCallBackStubFuzzTest.OnRemoteRequest(code, datas, reply, option);
77 return formUtil.GenerateUdidHash(udidHash);
78 }
79 }
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
83 {
84 /* Run your code on data */
85 if (data == nullptr) {
86 return 0;
87 }
88
89 if (size < OHOS::U32_AT_SIZE) {
90 return 0;
91 }
92
93 /* Validate the length of size */
94 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
95 return 0;
96 }
97
98 char* ch = (char *)malloc(size + 1);
99 if (ch == nullptr) {
100 return 0;
101 }
102
103 (void)memset_s(ch, size + 1, 0x00, size + 1);
104 if (memcpy_s(ch, size, data, size) != EOK) {
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
111 free(ch);
112 ch = nullptr;
113 return 0;
114 }
115
116