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 "getwantsender_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "ability_record.h"
22#include "parcel.h"
23#include "sender_info.h"
24#include "want_agent_client.h"
25#include "want_sender_info.h"
26
27using namespace OHOS::AAFwk;
28using namespace OHOS::AppExecFwk;
29
30namespace OHOS {
31namespace {
32constexpr size_t FOO_MAX_LEN = 1024;
33constexpr size_t U32_AT_SIZE = 4;
34}
35sptr<Token> GetFuzzAbilityToken()
36{
37    sptr<Token> token = nullptr;
38
39    AbilityRequest abilityRequest;
40    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
41    abilityRequest.abilityInfo.name = "MainAbility";
42    abilityRequest.abilityInfo.type = AbilityType::DATA;
43    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
44    if (abilityRecord) {
45        token = abilityRecord->GetToken();
46    }
47
48    return token;
49}
50
51bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
52{
53    // get token
54    sptr<Token> token = GetFuzzAbilityToken();
55    if (!token) {
56        std::cout << "Get ability token failed." << std::endl;
57        return false;
58    }
59
60    // fuzz for wantSenderInfo
61    Parcel wantSenderInfoParcel;
62    WantSenderInfo* wantSenderInfo = nullptr;
63    sptr<IWantSender> sender = nullptr;
64    if (wantSenderInfoParcel.WriteBuffer(data, size)) {
65        wantSenderInfo = WantSenderInfo::Unmarshalling(wantSenderInfoParcel);
66        if (wantSenderInfo) {
67            WantAgentClient::GetInstance().GetWantSender(*wantSenderInfo, token, sender);
68        }
69    }
70
71    // fuzz for senderInfo
72    Parcel senderInfoParcel;
73    SenderInfo* senderInfo = nullptr;
74    if (senderInfoParcel.WriteBuffer(data, size)) {
75        senderInfo = SenderInfo::Unmarshalling(senderInfoParcel);
76        if (sender && senderInfo) {
77            WantAgentClient::GetInstance().SendWantSender(sender, *senderInfo);
78        }
79    }
80
81    if (senderInfo) {
82        delete senderInfo;
83        senderInfo = nullptr;
84    }
85    if (wantSenderInfo) {
86        delete wantSenderInfo;
87        wantSenderInfo = nullptr;
88    }
89
90    return true;
91}
92}
93
94/* Fuzzer entry point */
95extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
96{
97    /* Run your code on data */
98    if (data == nullptr) {
99        std::cout << "invalid data" << std::endl;
100        return 0;
101    }
102
103    /* Validate the length of size */
104    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
105        return 0;
106    }
107
108    char* ch = (char*)malloc(size + 1);
109    if (ch == nullptr) {
110        std::cout << "malloc failed." << std::endl;
111        return 0;
112    }
113
114    (void)memset_s(ch, size + 1, 0x00, size + 1);
115    if (memcpy_s(ch, size, data, size) != EOK) {
116        std::cout << "copy failed." << std::endl;
117        free(ch);
118        ch = nullptr;
119        return 0;
120    }
121
122    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
123    free(ch);
124    ch = nullptr;
125    return 0;
126}
127
128