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
26using namespace OHOS::AAFwk;
27
28namespace OHOS {
29namespace {
30constexpr int INPUT_ZERO = 0;
31constexpr int INPUT_ONE = 1;
32constexpr int INPUT_TWO = 2;
33constexpr int INPUT_THREE = 3;
34constexpr size_t FOO_MAX_LEN = 1024;
35constexpr size_t U32_AT_SIZE = 4;
36constexpr size_t OFFSET_ZERO = 24;
37constexpr size_t OFFSET_ONE = 16;
38constexpr size_t OFFSET_TWO = 8;
39} // namespace
40
41uint32_t GetU32Data(const char* ptr)
42{
43    // convert fuzz input data to an integer
44    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
45        ptr[INPUT_THREE];
46}
47
48bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
49{
50    std::shared_ptr<TestObserver> testObserver = std::make_shared<TestObserver>();
51    std::string stringParam(data, size);
52    std::string cmd(data, size);
53    int64_t resultCode = static_cast<int64_t>(GetU32Data(data));
54    int64_t timeoutSec = static_cast<int64_t>(GetU32Data(data));
55    int64_t timeoutMs = static_cast<int64_t>(GetU32Data(data));
56
57    testObserver-> TestStatus(stringParam, resultCode);
58    testObserver-> ExecuteShellCommand(cmd, timeoutSec);
59    testObserver->TestFinished(stringParam, resultCode);
60    testObserver-> WaitForFinish(timeoutMs);
61
62    return true;
63}
64} // namespace OHOS
65
66/* Fuzzer entry point */
67extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
68{
69    /* Run your code on data */
70    if (data == nullptr) {
71        std::cout << "invalid data" << std::endl;
72        return 0;
73    }
74
75    /* Validate the length of size */
76    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
77        return 0;
78    }
79
80    char *ch = (char *)malloc(size + 1);
81    if (ch == nullptr) {
82        std::cout << "malloc failed." << std::endl;
83        return 0;
84    }
85
86    (void)memset_s(ch, size + 1, 0x00, size + 1);
87    if (memcpy_s(ch, size + 1, data, size) != EOK) {
88        std::cout << "copy failed." << std::endl;
89        free(ch);
90        ch = nullptr;
91        return 0;
92    }
93
94    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
95    free(ch);
96    ch = nullptr;
97    return 0;
98}