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 "wantsecond_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <iostream>
21
22 #define private public
23 #include "want.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 std::shared_ptr<Want> want = std::make_shared<Want>();
42 std::string type(data, size);
43 want->SetType(type);
44 want->FormatType(type);
45 Uri uri(type);
46 want->SetUri(uri);
47 want->SetUriAndType(uri, type);
48 want->FormatUri(uri);
49 want->FormatUri(type);
50 char* charUri;
51 want->WantParseUri(charUri);
52 want->GetLowerCaseScheme(uri);
53 want->FormatUriAndType(uri, type);
54 want->FormatMimeType(type);
55 return true;
56 }
57 }
58
59 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
61 {
62 /* Run your code on data */
63 if (data == nullptr) {
64 std::cout << "invalid data" << std::endl;
65 return 0;
66 }
67
68 /* Validate the length of size */
69 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
70 return 0;
71 }
72
73 char* ch = reinterpret_cast<char *>(malloc(size + 1));
74 if (ch == nullptr) {
75 std::cout << "malloc failed." << std::endl;
76 return 0;
77 }
78
79 (void)memset_s(ch, size + 1, 0x00, size + 1);
80 if (memcpy_s(ch, size, data, size) != EOK) {
81 std::cout << "copy failed." << std::endl;
82 free(ch);
83 ch = nullptr;
84 return 0;
85 }
86
87 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92