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 "cancelwantsender_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20
21#include "parcel.h"
22#include "securec.h"
23#include "sender_info.h"
24#include "want_agent_client.h"
25
26using namespace OHOS::AAFwk;
27using namespace OHOS::AppExecFwk;
28
29namespace OHOS {
30namespace {
31constexpr size_t FOO_MAX_LEN = 1024;
32constexpr size_t U32_AT_SIZE = 4;
33}
34bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
35{
36    Parcel parcel;
37    sptr<IWantSender> sender = nullptr;
38    if (parcel.WriteBuffer(data, size)) {
39        sender = iface_cast<AAFwk::IWantSender>((static_cast<MessageParcel*>(&parcel))->ReadRemoteObject());
40    }
41    if (sender) {
42        WantAgentClient::GetInstance().CancelWantSender(sender);
43    }
44
45    return true;
46}
47}
48
49/* Fuzzer entry point */
50extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
51{
52    /* Run your code on data */
53    if (data == nullptr) {
54        std::cout << "invalid data" << std::endl;
55        return 0;
56    }
57
58    /* Validate the length of size */
59    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
60        return 0;
61    }
62
63    char* ch = (char*)malloc(size + 1);
64    if (ch == nullptr) {
65        std::cout << "malloc failed." << std::endl;
66        return 0;
67    }
68
69    (void)memset_s(ch, size + 1, 0x00, size + 1);
70    if (memcpy_s(ch, size, data, size) != EOK) {
71        std::cout << "copy failed." << std::endl;
72        free(ch);
73        ch = nullptr;
74        return 0;
75    }
76
77    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
78    free(ch);
79    ch = nullptr;
80    return 0;
81}
82
83