1 /*
2 * Copyright (c) 2024 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 "toolstestobserver_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include "securec.h"
21 #include <iostream>
22 #define private public
23 #include "test_observer.h"
24 #undef private
25
26 using namespace OHOS::AAFwk;
27
28 namespace OHOS {
29 namespace {
30 constexpr int INPUT_ZERO = 0;
31 constexpr int INPUT_ONE = 1;
32 constexpr int INPUT_TWO = 2;
33 constexpr int INPUT_THREE = 3;
34 constexpr size_t U32_AT_SIZE = 4;
35 constexpr size_t OFFSET_ZERO = 24;
36 constexpr size_t OFFSET_ONE = 16;
37 constexpr size_t OFFSET_TWO = 8;
38 } // namespace
39
GetU32Data(const char * ptr)40 uint32_t GetU32Data(const char* ptr)
41 {
42 // convert fuzz input data to an integer
43 return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
44 ptr[INPUT_THREE];
45 }
46
DoSomethingInterestingWithMyAPI(const char * data,size_t size)47 bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
48 {
49 std::shared_ptr<TestObserver> testObserver = std::make_shared<TestObserver>();
50 std::string stringParam(data, size);
51 std::string cmd(data, size);
52 int64_t resultCode = static_cast<int64_t>(GetU32Data(data));
53 int64_t timeoutSec = static_cast<int64_t>(GetU32Data(data));
54 int64_t timeoutMs = static_cast<int64_t>(GetU32Data(data));
55
56 testObserver-> TestStatus(stringParam, resultCode);
57 testObserver-> ExecuteShellCommand(cmd, timeoutSec);
58 testObserver->TestFinished(stringParam, resultCode);
59 testObserver-> WaitForFinish(timeoutMs);
60
61 return true;
62 }
63 } // namespace OHOS
64
65 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)66 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
67 {
68 /* Run your code on data */
69 if (data == nullptr) {
70 std::cout << "invalid data" << std::endl;
71 return 0;
72 }
73
74 /* Validate the length of size */
75 if (size < OHOS::U32_AT_SIZE) {
76 return 0;
77 }
78
79 char *ch = (char *)malloc(size + 1);
80 if (ch == nullptr) {
81 std::cout << "malloc failed." << std::endl;
82 return 0;
83 }
84
85 (void)memset_s(ch, size + 1, 0x00, size + 1);
86 if (memcpy_s(ch, size + 1, data, size) != EOK) {
87 std::cout << "copy failed." << std::endl;
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
94 free(ch);
95 ch = nullptr;
96 return 0;
97 }