1 /*
2 * Copyright (c) 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 "inputclientstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <input_method_agent_stub.h>
21
22 #include "global.h"
23 #include "input_client_stub.h"
24 #include "message_parcel.h"
25
26 using namespace OHOS::MiscServices;
27 namespace OHOS {
28 constexpr size_t THRESHOLD = 10;
29 constexpr int32_t OFFSET = 4;
30 const std::u16string INPUTCLIENTSTUB_INTERFACE_TOKEN = u"ohos.miscservices.inputmethod.InputClient";
31
ConvertToUint32(const uint8_t * ptr)32 uint32_t ConvertToUint32(const uint8_t *ptr)
33 {
34 if (ptr == nullptr) {
35 return 0;
36 }
37 uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
38 return bigVar;
39 }
40
FuzzInputClientStub(const uint8_t * rawData,size_t size)41 void FuzzInputClientStub(const uint8_t *rawData, size_t size)
42 {
43 uint32_t code = ConvertToUint32(rawData);
44 rawData = rawData + OFFSET;
45 size = size - OFFSET;
46
47 MessageParcel data;
48 data.WriteInterfaceToken(INPUTCLIENTSTUB_INTERFACE_TOKEN);
49 data.WriteBuffer(rawData, size);
50 data.RewindRead(0);
51 MessageParcel reply;
52 MessageOption option;
53
54 sptr<InputClientStub> mClient = new InputClientStub();
55 MessageHandler *handler = MessageHandler::Instance();
56 mClient->SetHandler(handler);
57 mClient->OnRemoteRequest(code, data, reply, option);
58 }
59
TextOnInputReady()60 void TextOnInputReady()
61 {
62 sptr<InputClientStub> mClient = new InputClientStub();
63 sptr<InputMethodAgentStub> mInputMethodAgentStub = new InputMethodAgentStub();
64 MessageParcel data;
65 data.WriteRemoteObject(mInputMethodAgentStub->AsObject());
66 auto remoteObject = data.ReadRemoteObject();
67 sptr<IInputMethodAgent> iface = iface_cast<IInputMethodAgent>(remoteObject);
68 mClient->onInputReady(iface);
69 }
70
TestOnSwitchInput()71 void TestOnSwitchInput()
72 {
73 sptr<InputClientStub> mClient = new InputClientStub();
74 Property property = {};
75 SubProperty subProperty = {};
76
77 mClient->OnSwitchInput(property, subProperty);
78 }
79 } // namespace OHOS
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
83 {
84 if (size < OHOS::THRESHOLD) {
85 return 0;
86 }
87 /* Run your code on data */
88 OHOS::FuzzInputClientStub(data, size);
89 OHOS::TextOnInputReady();
90 OHOS::TestOnSwitchInput();
91 return 0;
92 }