1/*
2 * Copyright (c) 2022-2022 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 "perusersession_fuzzer.h"
17
18#define private public
19#define protected public
20#include "peruser_session.h"
21#undef private
22
23#include <cstddef>
24#include <cstdint>
25#include <memory>
26#include <string_ex.h>
27
28#include "global.h"
29#include "i_input_method_agent.h"
30#include "i_input_method_core.h"
31#include "input_client_proxy.h"
32#include "input_client_stub.h"
33#include "input_method_ability.h"
34#include "input_method_agent_proxy.h"
35#include "input_method_agent_stub.h"
36#include "input_method_core_proxy.h"
37#include "input_method_core_stub.h"
38#include "input_method_info.h"
39#include "input_method_property.h"
40#include "iremote_broker.h"
41#include "message_parcel.h"
42#include "input_method_types.h"
43
44using namespace OHOS::MiscServices;
45namespace OHOS {
46constexpr size_t THRESHOLD = 10;
47constexpr int32_t MAIN_USER_ID = 100;
48
49uint32_t ConvertToUint32(const uint8_t *ptr)
50{
51    if (ptr == nullptr) {
52        return 0;
53    }
54    uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
55    return bigVar;
56}
57
58bool InitializeClientInfo(InputClientInfo &clientInfo)
59{
60    sptr<IInputClient> clientStub = new (std::nothrow) InputClientStub();
61    if (clientStub == nullptr) {
62        IMSA_HILOGE("failed to create client");
63        return false;
64    }
65    sptr<InputDeathRecipient> deathRecipient = new (std::nothrow) InputDeathRecipient();
66    if (deathRecipient == nullptr) {
67        IMSA_HILOGE("failed to new deathRecipient");
68        return false;
69    }
70    clientInfo = { .userID = MAIN_USER_ID, .client = clientStub, .deathRecipient = deathRecipient };
71    return true;
72}
73
74bool FuzzPerUserSession(const uint8_t *rawData, size_t size)
75{
76    Property property;
77    SubProperty subProperty;
78    InputClientInfo clientInfo;
79    if (!InitializeClientInfo(clientInfo)) {
80        return false;
81    }
82    auto client = iface_cast<IInputClient>(clientInfo.client->AsObject());
83    sptr<InputMethodCoreStub> coreStub = new (std::nothrow) InputMethodCoreStub();
84    if (coreStub == nullptr) {
85        return false;
86    }
87    auto core = iface_cast<IInputMethodCore>(coreStub->AsObject());
88    sptr<InputMethodAgentStub> agentStub = new (std::nothrow) InputMethodAgentStub();
89    if (agentStub == nullptr) {
90        return false;
91    }
92    auto agent = iface_cast<IInputMethodAgent>(agentStub);
93    static std::shared_ptr<PerUserSession> userSessions = std::make_shared<PerUserSession>(MAIN_USER_ID);
94
95    userSessions->OnRegisterProxyIme(core, agent->AsObject());
96    int32_t type = 4;
97    userSessions->OnUnRegisteredProxyIme(static_cast<UnRegisteredType>(type), core);
98    userSessions->IsProxyImeEnable();
99
100    userSessions->OnPrepareInput(clientInfo);
101    userSessions->OnSetCoreAndAgent(core, agent->AsObject());
102    userSessions->OnShowCurrentInput();
103    sptr<IRemoteObject> agentObject = nullptr;
104    clientInfo.isShowKeyboard = false;
105    userSessions->OnStartInput(clientInfo, agentObject);
106    clientInfo.isShowKeyboard = true;
107    userSessions->OnStartInput(clientInfo, agentObject);
108    userSessions->NotifyImeChangeToClients(property, subProperty);
109    userSessions->OnHideCurrentInput();
110    userSessions->OnHideInput(client);
111    userSessions->OnReleaseInput(client);
112    return true;
113}
114} // namespace OHOS
115/* Fuzzer entry point */
116extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
117{
118    if (size < OHOS::THRESHOLD) {
119        return 0;
120    }
121    /* Run your code on data */
122    OHOS::FuzzPerUserSession(data, size);
123    return 0;
124}