/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "abilitymanagerservicefirst_fuzzer.h"

#include <cstddef>
#include <cstdint>

#define private public
#define protected public
#include "ability_manager_service.h"
#undef protected
#undef private

#include "ability_connect_callback_interface.h"
#include "ability_connect_callback_stub.h"
#include "ability_record.h"

using namespace OHOS::AAFwk;
using namespace OHOS::AppExecFwk;

namespace OHOS {
namespace {
constexpr size_t FOO_MAX_LEN = 1024;
constexpr size_t U32_AT_SIZE = 4;
constexpr uint8_t ENABLE = 2;
class MyAbilityConnection : public IAbilityConnection {
public:
    MyAbilityConnection() = default;
    virtual ~MyAbilityConnection() = default;
    void OnAbilityConnectDone(
        const AppExecFwk::ElementName &element, const sptr<IRemoteObject> &remoteObject, int resultCode) override
    {}
    void OnAbilityDisconnectDone(const AppExecFwk::ElementName &element, int resultCode) override
    {}
    sptr<IRemoteObject> AsObject() override
    {
        return {};
    }
};
}

uint32_t GetU32Data(const char* ptr)
{
    // convert fuzz input data to an integer
    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}

sptr<Token> GetFuzzAbilityToken()
{
    sptr<Token> token = nullptr;
    AbilityRequest abilityRequest;
    abilityRequest.appInfo.bundleName = "com.example.fuzzTest";
    abilityRequest.abilityInfo.name = "MainAbility";
    abilityRequest.abilityInfo.type = AbilityType::DATA;
    std::shared_ptr<AbilityRecord> abilityRecord = AbilityRecord::CreateAbilityRecord(abilityRequest);
    if (abilityRecord) {
        token = abilityRecord->GetToken();
    }
    return token;
}

bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
{
    bool boolParam = *data % ENABLE;
    int intParam = static_cast<int>(GetU32Data(data));
    int32_t int32Param = static_cast<int32_t>(GetU32Data(data));
    int64_t int64Param = static_cast<int64_t>(GetU32Data(data));
    uint32_t uint32Param = GetU32Data(data);
    std::string stringParam(data, size);
    Parcel wantParcel;
    Want *want = nullptr;
    if (wantParcel.WriteBuffer(data, size)) {
        want = Want::Unmarshalling(wantParcel);
        if (!want) {
            return false;
        }
    }
    sptr<IRemoteObject> token = GetFuzzAbilityToken();
    sptr<IAbilityConnection> connect = new MyAbilityConnection();

    // fuzz for AbilityManagerService
    auto abilityms = std::make_shared<AbilityManagerService>();
    abilityms->InitStartupFlag();
    abilityms->QueryServiceState();
    AbilityRequest abilityRequest;
    AppExecFwk::ExtensionAbilityType extensionType = ExtensionAbilityType::SERVICE;
    abilityms->CheckOptExtensionAbility(*want, abilityRequest, int32Param, extensionType);
    AppExecFwk::AbilityInfo abilityInfo;
    abilityms->ReportAbilitStartInfoToRSS(abilityInfo);
    abilityms->ReportEventToSuspendManager(abilityInfo);
    abilityms->StartExtensionAbility(*want, token, int32Param, extensionType);
    abilityms->StopExtensionAbility(*want, token, int32Param, extensionType);
    abilityms->TerminateAbility(token, intParam, want);
    abilityms->CloseAbility(token, intParam, want);
    abilityms->TerminateAbilityWithFlag(token, intParam, want, boolParam);
    abilityms->SendResultToAbility(intParam, intParam, *want);
    abilityms->StartRemoteAbility(*want, intParam, int32Param, token);
    abilityms->CheckIfOperateRemote(*want);
    abilityms->AnonymizeDeviceId(stringParam);
    abilityms->TerminateAbilityByCaller(token, intParam);
    abilityms->MinimizeAbility(token, boolParam);
    abilityms->ConnectAbility(*want, connect, token, int32Param);
    abilityms->ConnectAbilityCommon(*want, connect, token, extensionType, int32Param);
    abilityms->BuildEventInfo(*want, int32Param);
    abilityms->DisconnectAbility(connect);
    abilityms->ConnectLocalAbility(*want, int32Param, connect, token, extensionType);
    abilityms->ConnectRemoteAbility(*want, token, token);
    abilityms->DisconnectLocalAbility(connect);
    abilityms->DisconnectRemoteAbility(token);
    AAFwk::WantParams wantParams;
    abilityms->ContinueMission(stringParam, stringParam, int32Param, token, wantParams);
    abilityms->ContinueAbility(stringParam, int32Param, uint32Param);
    abilityms->StartContinuation(*want, token, int32Param);
    abilityms->NotifyCompleteContinuation(stringParam, int32Param, boolParam);
    abilityms->NotifyContinuationResult(int32Param, int32Param);
    abilityms->StartSyncRemoteMissions(stringParam, boolParam, int64Param);
    abilityms->StopSyncRemoteMissions(stringParam);
    sptr<AbilityRuntime::IConnectionObserver> observer;
    abilityms->RegisterObserver(observer);
    abilityms->UnregisterObserver(observer);
    std::vector<AbilityRuntime::DlpConnectionInfo> infos;
    abilityms->GetDlpConnectionInfos(infos);
    if (!want) {
        delete want;
        want = nullptr;
    }

    return true;
}
}

/* Fuzzer entry point */
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
    /* Run your code on data */
    if (data == nullptr) {
        return 0;
    }

    /* Validate the length of size */
    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
        return 0;
    }

    char* ch = (char *)malloc(size + 1);
    if (ch == nullptr) {
        std::cout << "malloc failed." << std::endl;
        return 0;
    }

    (void)memset_s(ch, size + 1, 0x00, size + 1);
    if (memcpy_s(ch, size, data, size) != EOK) {
        std::cout << "copy failed." << std::endl;
        free(ch);
        ch = nullptr;
        return 0;
    }

    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
    free(ch);
    ch = nullptr;
    return 0;
}