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 "fuzzer/FuzzedDataProvider.h"
17#include "scanmdnsservice_fuzzer.h"
18#include "scan_mdns_service.h"
19
20namespace OHOS {
21namespace Scan {
22    constexpr uint8_t MAX_STRING_LENGTH = 255;
23    constexpr int MAX_SET_NUMBER = 100;
24    constexpr size_t FOO_MAX_LEN = 1024;
25    constexpr size_t U32_AT_SIZE = 4;
26
27    void TestOnStartDiscoverService(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
28    {
29        std::string serviceName = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
30        ScanMdnsService::GetInstance().SetServiceType(serviceName.c_str());
31        ScanMdnsService::GetInstance().onStartDiscoverService();
32        ScanMdnsService::GetInstance().onStopDiscoverService();
33    }
34
35    void TestSetService(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
36    {
37        MDnsServiceInfo info;
38        ScanMdnsService::GetInstance().SetServiceInfo(info);
39        sptr<ScanMDnsResolveObserver> resolveObserve;
40        ScanMdnsService::GetInstance().SetMDnsResolveCallBack(resolveObserve);
41        sptr<ScanMDnsDiscoveryObserver> discoveryObserve;
42        ScanMdnsService::GetInstance().SetMDnsDiscoveryCallBack(discoveryObserve);
43        ScanMdnsService::GetInstance().onStartDiscoverService();
44        std::string stype = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
45        ScanMdnsService::GetInstance().SetServiceType(stype);
46        ScanMdnsService::GetInstance().GetMDnsResolveCallBack();
47        ScanMdnsService::GetInstance().GetMDnsDiscoveryCallBack();
48        ScanMdnsService::GetInstance().GetServiceInfo();
49    }
50
51    void TestGetServiceAttribute(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
52    {
53        MDnsServiceInfo serviceInfo;
54        serviceInfo.name = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
55        std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
56        ScanMdnsService::GetInstance().GetServiceAttribute(serviceInfo, keyStr);
57    }
58
59    void TestonResolveService(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
60    {
61        MDnsServiceInfo serviceInfo;
62        serviceInfo.name = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
63        ScanMdnsService::GetInstance().onResolveService(serviceInfo);
64    }
65
66    void TestToMDnsScaner(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
67    {
68        MDnsServiceInfo serviceInfo;
69        serviceInfo.name = dataProvider->ConsumeRandomLengthString(MAX_STRING_LENGTH);
70        ScanMdnsService::GetInstance().ToMDnsScaner(serviceInfo);
71    }
72
73    void TestHandleServiceFound(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
74    {
75        MDnsServiceInfo serviceInfo;
76        ScanMDnsDiscoveryObserver scanMDnsDiscoveryObserver = ScanMDnsDiscoveryObserver(serviceInfo);
77        int32_t retCode = dataProvider->ConsumeIntegralInRange<int32_t>(0, MAX_SET_NUMBER);
78        scanMDnsDiscoveryObserver.HandleServiceFound(serviceInfo, retCode);
79    }
80
81    void TestHandleResolveResult(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
82    {
83        MDnsServiceInfo serviceInfo;
84        ScanMDnsResolveObserver scanMDnsResolveObserver = ScanMDnsResolveObserver(serviceInfo);
85        int32_t retCode = dataProvider->ConsumeIntegralInRange<int32_t>(0, MAX_SET_NUMBER);
86        scanMDnsResolveObserver.HandleResolveResult(serviceInfo, retCode);
87    }
88
89    void TestHandleStopDiscover(const uint8_t* data, size_t size, FuzzedDataProvider* dataProvider)
90    {
91        MDnsServiceInfo serviceInfo;
92        ScanMDnsDiscoveryObserver scanMDnsDiscoveryObserver = ScanMDnsDiscoveryObserver(serviceInfo);
93        int32_t retCode = dataProvider->ConsumeIntegralInRange<int32_t>(0, MAX_SET_NUMBER);
94        scanMDnsDiscoveryObserver.HandleStopDiscover(serviceInfo, retCode);
95    }
96
97}
98}
99
100/* Fuzzer entry point */
101extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
102{
103    if (data == nullptr) {
104        return 0;
105    }
106
107    if (size < OHOS::Scan::U32_AT_SIZE || size > OHOS::Scan::FOO_MAX_LEN) {
108        return 0;
109    }
110    FuzzedDataProvider dataProvider(data, size);
111    OHOS::Scan::TestOnStartDiscoverService(data, size, &dataProvider);
112    OHOS::Scan::TestGetServiceAttribute(data, size, &dataProvider);
113    OHOS::Scan::TestonResolveService(data, size, &dataProvider);
114    OHOS::Scan::TestToMDnsScaner(data, size, &dataProvider);
115    OHOS::Scan::TestHandleServiceFound(data, size, &dataProvider);
116    OHOS::Scan::TestHandleResolveResult(data, size, &dataProvider);
117    OHOS::Scan::TestHandleStopDiscover(data, size, &dataProvider);
118    return 0;
119}
120
121