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 "connectability_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 int32_t accountId = 100;
47 if (!context) {
48 return false;
49 }
50
51 // fuzz for want
52 Parcel wantParcel;
53 Want* want = nullptr;
54 if (wantParcel.WriteBuffer(data, size)) {
55 want = Want::Unmarshalling(wantParcel);
56 }
57
58 // fuzz for connection
59 sptr<AbilityConnectCallbackFuzz> connection = new AbilityConnectCallbackFuzz();
60
61 if (want && connection) {
62 context->ConnectAbility(*want, connection);
63 context->ConnectAbilityWithAccount(*want, accountId, connection);
64 }
65
66 if (want) {
67 delete want;
68 want = nullptr;
69 }
70
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 std::cout << "invalid data" << std::endl;
81 return 0;
82 }
83
84 /* Validate the length of size */
85 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
86 return 0;
87 }
88
89 char* ch = (char*)malloc(size + 1);
90 if (ch == nullptr) {
91 std::cout << "malloc failed." << std::endl;
92 return 0;
93 }
94
95 (void)memset_s(ch, size + 1, 0x00, size + 1);
96 if (memcpy_s(ch, size, data, size) != EOK) {
97 std::cout << "copy failed." << std::endl;
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
104 free(ch);
105 ch = nullptr;
106 return 0;
107 }
108
109