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 "insightintentexecutecallbackstub_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#define private public
22#include "insight_intent_execute_callback_stub.h"
23#undef private
24
25#include "ability_record.h"
26
27using namespace OHOS::AAFwk;
28using namespace OHOS::AppExecFwk;
29
30namespace OHOS {
31namespace {
32constexpr int INPUT_ZERO = 0;
33constexpr int INPUT_ONE = 1;
34constexpr int INPUT_TWO = 2;
35constexpr int INPUT_THREE = 3;
36constexpr size_t FOO_MAX_LEN = 1024;
37constexpr size_t U32_AT_SIZE = 4;
38constexpr size_t OFFSET_ZERO = 24;
39constexpr size_t OFFSET_ONE = 16;
40constexpr size_t OFFSET_TWO = 8;
41constexpr uint8_t ENABLE = 2;
42} // namespace
43
44const std::u16string APPMGR_INTERFACE_TOKEN = u"ohos.aafwk.AppManager";
45
46class InsightIntentExecuteCallbackStubFuzzTest : public InsightIntentExecuteCallbackStub {
47public:
48    InsightIntentExecuteCallbackStubFuzzTest() = default;
49    virtual ~InsightIntentExecuteCallbackStubFuzzTest()
50    {}
51    void OnExecuteDone(uint64_t key, int32_t resultCode,
52        const AppExecFwk::InsightIntentExecuteResult &executeResult) override {}
53};
54
55uint32_t GetU32Data(const char* ptr)
56{
57    // convert fuzz input data to an integer
58    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
59        ptr[INPUT_THREE];
60}
61
62bool DoSomethingInterestingWithMyAPI(const char *data, size_t size)
63{
64    uint32_t code = static_cast<uint32_t>(GetU32Data(data));
65    std::shared_ptr<InsightIntentExecuteCallbackStub> backStub =
66        std::make_shared<InsightIntentExecuteCallbackStubFuzzTest>();
67    MessageParcel dataParcel;
68    MessageParcel reply;
69    MessageOption option;
70    dataParcel.WriteInterfaceToken(APPMGR_INTERFACE_TOKEN);
71    dataParcel.WriteBuffer(data, size);
72    dataParcel.RewindRead(0);
73    backStub->OnRemoteRequest(code, dataParcel, reply, option);
74    backStub->OnExecuteDoneInner(dataParcel, reply);
75
76    return true;
77}
78} // namespace OHOS
79
80/* Fuzzer entry point */
81extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
82{
83    /* Run your code on data */
84    if (data == nullptr) {
85        std::cout << "invalid data" << std::endl;
86        return 0;
87    }
88
89    /* Validate the length of size */
90    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
91        return 0;
92    }
93
94    char *ch = (char *)malloc(size + 1);
95    if (ch == nullptr) {
96        std::cout << "malloc failed." << std::endl;
97        return 0;
98    }
99
100    (void)memset_s(ch, size + 1, 0x00, size + 1);
101    if (memcpy_s(ch, size + 1, data, size) != EOK) {
102        std::cout << "copy failed." << std::endl;
103        free(ch);
104        ch = nullptr;
105        return 0;
106    }
107
108    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
109    free(ch);
110    ch = nullptr;
111    return 0;
112}