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 "arraywrappersecond_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <iostream>
21
22 #define private public
23 #include "array_wrapper.h"
24 #undef private
25 #include "securec.h"
26
27 using namespace OHOS::AAFwk;
28
29 namespace OHOS {
30 namespace {
31 constexpr size_t FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
33 }
GetU32Data(const char * ptr)34 uint32_t GetU32Data(const char* ptr)
35 {
36 // convert fuzz input data to an integer
37 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
38 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)39 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
40 {
41 long longSize = 0;
42 InterfaceID id;
43 std::shared_ptr<Array> array = std::make_shared<Array>(longSize, id);
44 std::string values(data, size);
45 array->ParseString(values, longSize);
46 array->ParseBoolean(values, longSize);
47 array->ParseByte(values, longSize);
48 array->ParseShort(values, longSize);
49 array->ParseInteger(values, longSize);
50 array->ParseLong(values, longSize);
51 array->ParseFloat(values, longSize);
52 return true;
53 }
54 }
55
56 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)57 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
58 {
59 /* Run your code on data */
60 if (data == nullptr) {
61 std::cout << "invalid data" << std::endl;
62 return 0;
63 }
64
65 /* Validate the length of size */
66 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
67 return 0;
68 }
69
70 char* ch = (char *)malloc(size + 1);
71 if (ch == nullptr) {
72 std::cout << "malloc failed." << std::endl;
73 return 0;
74 }
75
76 (void)memset_s(ch, size + 1, 0x00, size + 1);
77 if (memcpy_s(ch, size, data, size) != EOK) {
78 std::cout << "copy failed." << std::endl;
79 free(ch);
80 ch = nullptr;
81 return 0;
82 }
83
84 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89