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 "disconnectability_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "ability_connect_callback.h"
22 #include "ability_context_impl.h"
23 #include "parcel.h"
24 #include "want.h"
25 #include "securec.h"
26
27 using namespace OHOS::AAFwk;
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 namespace {
32 constexpr size_t FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
34 }
35 class AbilityConnectCallbackFuzz : public AbilityRuntime::AbilityConnectCallback {
36 public:
AbilityConnectCallbackFuzz()37 explicit AbilityConnectCallbackFuzz() {};
~AbilityConnectCallbackFuzz()38 virtual ~AbilityConnectCallbackFuzz() {};
OnAbilityConnectDone(const AppExecFwk::ElementName & element,const sptr<IRemoteObject> & remoteObject,int resultCode)39 void OnAbilityConnectDone(
40 const AppExecFwk::ElementName &element, const sptr<IRemoteObject> &remoteObject, int resultCode) override {};
OnAbilityDisconnectDone(const AppExecFwk::ElementName & element,int resultCode)41 void OnAbilityDisconnectDone(const AppExecFwk::ElementName &element, int resultCode) override {};
42 };
DoSomethingInterestingWithMyAPI(const char * data,size_t size)43 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
44 {
45 AbilityRuntime::AbilityContextImpl* context = new AbilityRuntime::AbilityContextImpl();
46 if (!context) {
47 return false;
48 }
49
50 // fuzz for want
51 Parcel wantParcel;
52 Want *want = nullptr;
53 if (wantParcel.WriteBuffer(data, size)) {
54 want = Want::Unmarshalling(wantParcel);
55 }
56
57 // fuzz for connection
58 sptr<AbilityConnectCallbackFuzz> connection = new AbilityConnectCallbackFuzz();
59
60 if (want && connection) {
61 context->DisconnectAbility(*want, connection);
62 }
63
64 if (want) {
65 delete want;
66 want = nullptr;
67 }
68
69 return true;
70 }
71 }
72
73 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)74 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
75 {
76 /* Run your code on data */
77 if (data == nullptr) {
78 std::cout << "invalid data" << std::endl;
79 return 0;
80 }
81
82 /* Validate the length of size */
83 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
84 return 0;
85 }
86
87 char* ch = (char *)malloc(size + 1);
88 if (ch == nullptr) {
89 std::cout << "malloc failed." << std::endl;
90 return 0;
91 }
92
93 (void)memset_s(ch, size + 1, 0x00, size + 1);
94 if (memcpy_s(ch, size, data, size) != EOK) {
95 std::cout << "copy failed." << std::endl;
96 free(ch);
97 ch = nullptr;
98 return 0;
99 }
100
101 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
102 free(ch);
103 ch = nullptr;
104 return 0;
105 }
106
107