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 "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 std::shared_ptr<AbilityRuntime::AbilityContextImpl> context =
46 std::make_shared<AbilityRuntime::AbilityContextImpl>();
47 int32_t accountId = 100;
48 if (!context) {
49 return false;
50 }
51
52 // fuzz for want
53 Parcel wantParcel;
54 Want* want = nullptr;
55 if (wantParcel.WriteBuffer(data, size)) {
56 want = Want::Unmarshalling(wantParcel);
57 }
58
59 // fuzz for connection
60 sptr<AbilityConnectCallbackFuzz> connection = new AbilityConnectCallbackFuzz();
61
62 if (want && connection) {
63 context->ConnectAbility(*want, connection);
64 context->ConnectAbilityWithAccount(*want, accountId, connection);
65 }
66
67 if (want) {
68 delete want;
69 want = nullptr;
70 }
71
72 return true;
73 }
74 }
75
76 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)77 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78 {
79 /* Run your code on data */
80 if (data == nullptr) {
81 std::cout << "invalid data" << std::endl;
82 return 0;
83 }
84
85 /* Validate the length of size */
86 if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
87 return 0;
88 }
89
90 char* ch = static_cast<char*>(malloc(size + 1));
91 if (ch == nullptr) {
92 std::cout << "malloc failed." << std::endl;
93 return 0;
94 }
95
96 (void)memset_s(ch, size + 1, 0x00, size + 1);
97 if (memcpy_s(ch, size, data, size) != EOK) {
98 std::cout << "copy failed." << std::endl;
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103
104 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110