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 "wantthird_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 want->CountEntities();
43 Want *wantptr = nullptr;
44 want->GetScheme();
45 AppExecFwk::ElementName elementName;
46 wantptr = want->MakeMainAbility(elementName);
47 if (wantptr) {
48 delete wantptr;
49 wantptr = nullptr;
50 }
51 Operation operation;
52 want->SetOperation(operation);
53 wantptr = want->CloneOperation();
54 if (wantptr) {
55 delete wantptr;
56 wantptr = nullptr;
57 }
58 std::string key(data, size);
59 want->HasParameter(key);
60 std::string content(data, size);
61 std::string prop(data, size);
62 std::string value(data, size);
63 want->ParseContent(content, prop, value);
64 std::string str(data, size);
65 want->Decode(str);
66 want->Encode(str);
67 int level = static_cast<int>(GetU32Data(data));
68 want->DumpInfo(level);
69 nlohmann::json wantJson;
70 want->ReadFromJson(wantJson);
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 std::cout << "invalid data" << std::endl;
81 return 0;
82 }
83
84 /* Validate the length of size */
85 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
86 return 0;
87 }
88
89 char* ch = reinterpret_cast<char *>(malloc(size + 1));
90 if (ch == nullptr) {
91 std::cout << "malloc failed." << std::endl;
92 return 0;
93 }
94
95 (void)memset_s(ch, size + 1, 0x00, size + 1);
96 if (memcpy_s(ch, size, data, size) != EOK) {
97 std::cout << "copy failed." << std::endl;
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104 free(ch);
105 ch = nullptr;
106 return 0;
107 }
108