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 "formsupplystub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "form_supply_stub.h"
22 #include "message_parcel.h"
23 #include "securec.h"
24
25 using namespace OHOS::AppExecFwk;
26
27 namespace OHOS {
28 constexpr size_t U32_AT_SIZE = 4;
29 const std::u16string FORMMGR_INTERFACE_TOKEN = u"ohos.appexecfwk.FormMgr";
30
31 class FormSupplyStubFuzzTest : public FormSupplyStub {
32 public:
33 FormSupplyStubFuzzTest() = default;
34 virtual ~FormSupplyStubFuzzTest() = default;
OnAcquire(const FormProviderInfo & formInfo,const Want & want)35 int OnAcquire(const FormProviderInfo &formInfo, const Want &want) override
36 {
37 return 0;
38 }
OnEventHandle(const Want & want)39 int OnEventHandle(const Want &want) override
40 {
41 return 0;
42 }
OnAcquireStateResult(FormState state,const std::string & provider,const Want & wantArg,const Want & want)43 int OnAcquireStateResult(FormState state, const std::string &provider,
44 const Want &wantArg, const Want &want) override
45 {
46 return 0;
47 }
OnShareAcquire(int64_t formId,const std::string & remoteDeviceId,const AAFwk::WantParams & wantParams,int64_t requestCode,const bool & result)48 void OnShareAcquire(int64_t formId, const std::string &remoteDeviceId,
49 const AAFwk::WantParams &wantParams, int64_t requestCode, const bool &result) override
50 {}
OnRenderTaskDone(int64_t formId,const Want & want)51 int32_t OnRenderTaskDone(int64_t formId, const Want &want) override
52 {
53 return ERR_OK;
54 }
OnStopRenderingTaskDone(int64_t formId,const Want & want)55 int32_t OnStopRenderingTaskDone(int64_t formId, const Want &want) override
56 {
57 return ERR_OK;
58 }
OnAcquireDataResult(const AAFwk::WantParams & wantParams,int64_t requestCode)59 int OnAcquireDataResult(const AAFwk::WantParams &wantParams, int64_t requestCode) override
60 {
61 return ERR_OK;
62 }
63 };
64
Convert2Uint32(const char * ptr)65 uint32_t Convert2Uint32(const char* ptr)
66 {
67 // 将第0个数字左移24位，将第1个数字左移16位，将第2个数字左移8位，第3个数字不左移
68 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
69 }
70
DoSomethingInterestingWithMyAPI(const char * data,size_t size)71 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
72 {
73 uint32_t code = Convert2Uint32(data);
74 MessageParcel datas;
75 datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
76 datas.WriteBuffer(data, size);
77 datas.RewindRead(0);
78 MessageParcel reply;
79 MessageOption option;
80 std::shared_ptr<FormSupplyStub> formsupplystub = std::make_shared<FormSupplyStubFuzzTest>();
81 formsupplystub->OnRemoteRequest(code, datas, reply, option);
82 return true;
83 }
84 }
85
86 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)87 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
88 {
89 /* Run your code on data */
90 if (data == nullptr) {
91 return 0;
92 }
93
94 if (size < OHOS::U32_AT_SIZE) {
95 return 0;
96 }
97
98 char* ch = static_cast<char*>(malloc(size + 1));
99 if (ch == nullptr) {
100 return 0;
101 }
102
103 (void)memset_s(ch, size + 1, 0x00, size + 1);
104 if (memcpy_s(ch, size + 1, data, size) != EOK) {
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
111 free(ch);
112 ch = nullptr;
113 return 0;
114 }
115
116