fuzztest/abilityschedulerstub_fuzzer/abilityschedulerstub_fuzzer.cpp

/*
 * 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 "abilityschedulerstub_fuzzer.h"

#include <cstddef>
#include <cstdint>

#include "ability_scheduler_stub.h"
#include "message_parcel.h"
#include "securec.h"

using namespace OHOS::AAFwk;

namespace OHOS {
namespace {
constexpr size_t FOO_MAX_LEN = 1024;
constexpr size_t U32_AT_SIZE = 4;
const std::u16string ABILITYMGR_INTERFACE_TOKEN = u"ohos.aafwk.AbilityScheduler";
}
class AbilitySchedulerStubFuzzTest : public AbilitySchedulerStub {
public:
    AbilitySchedulerStubFuzzTest() = default;
    virtual ~AbilitySchedulerStubFuzzTest()
    {};
    void ScheduleAbilityTransaction(const Want &want, const LifeCycleStateInfo &targetState) override
    {}
    void SendResult(int requestCode, int resultCode, const Want &resultWant) override
    {}
    void ScheduleConnectAbility(const Want &want) override
    {}
    void ScheduleDisconnectAbility(const Want &want) override
    {}
    void ScheduleCommandAbility(const Want &want, bool restart, int startId) override
    {}
    void ScheduleSaveAbilityState() override
    {}
    void ScheduleRestoreAbilityState(const PacMap &inState) override
    {}
    std::vector<std::string> GetFileTypes(const Uri &uri, const std::string &mimeTypeFilter) override
    {
        return {};
    }
    int OpenFile(const Uri &uri, const std::string &mode) override
    {
        return 0;
    }
    int OpenRawFile(const Uri &uri, const std::string &mode) override
    {
        return 0;
    }
    int Insert(const Uri &uri, const NativeRdb::ValuesBucket &value) override
    {
        return 0;
    }
    int Update(const Uri &uri, const NativeRdb::ValuesBucket &value,
        const NativeRdb::DataAbilityPredicates &predicates) override
    {
        return 0;
    }
    int Delete(const Uri &uri, const NativeRdb::DataAbilityPredicates &predicates) override
    {
        return 0;
    }
    std::shared_ptr<AppExecFwk::PacMap> Call(
        const Uri &uri, const std::string &method, const std::string &arg, const AppExecFwk::PacMap &pacMap) override
    {
        return {};
    }
    std::shared_ptr<NativeRdb::AbsSharedResultSet> Query(const Uri &uri,
        std::vector<std::string> &columns, const NativeRdb::DataAbilityPredicates &predicates) override
    {
        return {};
    }
    std::string GetType(const Uri &uri) override
    {
        return {};
    }
    bool Reload(const Uri &uri, const PacMap &extras) override
    {
        return true;
    }
    int BatchInsert(const Uri &uri, const std::vector<NativeRdb::ValuesBucket> &values) override
    {
        return 0;
    }
    bool ScheduleRegisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver) override
    {
        return true;
    }
    bool ScheduleUnregisterObserver(const Uri &uri, const sptr<IDataAbilityObserver> &dataObserver) override
    {
        return true;
    }
    bool ScheduleNotifyChange(const Uri &uri) override
    {
        return true;
    }
    Uri NormalizeUri(const Uri &uri) override
    {
        return Uri{"abilityschedulerstub"};
    }

    Uri DenormalizeUri(const Uri &uri) override
    {
        return Uri{"abilityschedulerstub"};
    }
    std::vector<std::shared_ptr<AppExecFwk::DataAbilityResult>> ExecuteBatch(
        const std::vector<std::shared_ptr<AppExecFwk::DataAbilityOperation>> &operations) override
    {
        return {};
    }
    void ContinueAbility(const std::string& deviceId, uint32_t versionCode) override
    {}
    void NotifyContinuationResult(int32_t result) override
    {}
    void DumpAbilityInfo(const std::vector<std::string> &params, std::vector<std::string> &info) override
    {}
    int BlockAbility() override
    {
        return 0;
    }
    void CallRequest() 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];
}

bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
{
    uint32_t code = GetU32Data(data);

    MessageParcel parcel;
    parcel.WriteInterfaceToken(ABILITYMGR_INTERFACE_TOKEN);
    parcel.WriteBuffer(data, size);
    parcel.RewindRead(0);
    MessageParcel reply;
    MessageOption option;

    std::shared_ptr<AbilitySchedulerStub> abilityschedulerstub = std::make_shared<AbilitySchedulerStubFuzzTest>();

    if (abilityschedulerstub->OnRemoteRequest(code, parcel, reply, option) != 0) {
        return false;
    }

    return true;
}
}

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

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