1 /*
2 * Copyright (c) 2024 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 "systemabilitytokencallbackstub_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "system_ability_token_callback_stub.h"
22 #include "message_parcel.h"
23 #include "securec.h"
24
25 using namespace OHOS::AAFwk;
26
27 namespace OHOS {
28 namespace {
29 constexpr size_t FOO_MAX_LEN = 1024;
30 constexpr size_t U32_AT_SIZE = 4;
31 const std::u16string ABILITYMGR_INTERFACE_TOKEN = u"ohos.aafwk.ISystemAbilityTokenCallback";
32 }
33
34 class SystemAbilityTokenCallbackStubFuzzTest : public SystemAbilityTokenCallbackStub {
35 public:
36 SystemAbilityTokenCallbackStubFuzzTest() = default;
~SystemAbilityTokenCallbackStubFuzzTest()37 virtual ~SystemAbilityTokenCallbackStubFuzzTest()
38 {}
SendResult(OHOS::AAFwk::Want & want,int32_t callerUid,int32_t requestCode,uint32_t accessToken,int32_t resultCode)39 int32_t SendResult(OHOS::AAFwk::Want& want, int32_t callerUid, int32_t requestCode,
40 uint32_t accessToken, int32_t resultCode) override
41 {
42 return 0;
43 }
44 };
45
GetU32Data(const char * ptr)46 uint32_t GetU32Data(const char* ptr)
47 {
48 // convert fuzz input data to an integer
49 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
50 }
51
DoSomethingInterestingWithMyAPI(const char * data,size_t size)52 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
53 {
54 uint32_t code = GetU32Data(data);
55
56 MessageParcel parcel;
57 parcel.WriteInterfaceToken(ABILITYMGR_INTERFACE_TOKEN);
58 parcel.WriteBuffer(data, size);
59 parcel.RewindRead(0);
60 MessageParcel reply;
61 MessageOption option;
62
63 std::shared_ptr<SystemAbilityTokenCallbackStub> systemabilitytokencallbackstub
64 = std::make_shared<SystemAbilityTokenCallbackStubFuzzTest>();
65
66 systemabilitytokencallbackstub->OnRemoteRequest(code, parcel, reply, option);
67
68 return true;
69 }
70 }
71
72 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)73 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
74 {
75 /* Run your code on data */
76 if (data == nullptr) {
77 std::cout << "invalid data" << std::endl;
78 return 0;
79 }
80
81 /* Validate the length of size */
82 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
83 return 0;
84 }
85
86 char* ch = static_cast<char*>(malloc(size + 1));
87 if (ch == nullptr) {
88 std::cout << "malloc failed." << std::endl;
89 return 0;
90 }
91
92 (void)memset_s(ch, size + 1, 0x00, size + 1);
93 if (memcpy_s(ch, size, data, size) != EOK) {
94 std::cout << "copy failed." << std::endl;
95 free(ch);
96 ch = nullptr;
97 return 0;
98 }
99
100 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
101 free(ch);
102 ch = nullptr;
103 return 0;
104 }