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 "printservice_fuzzer.h"
17
18 #include "print_constant.h"
19 #include "print_log.h"
20 #include "print_service_ability.h"
21
22 namespace OHOS {
23 namespace Print {
24 constexpr size_t FOO_MAX_LEN = 1024;
25 constexpr size_t U32_AT_SIZE = 4;
26 const std::u16string PRINT_SERVICE_INTERFACE_TOKEN = u"OHOS.Print.IPrintService";
27
DoSomethingInterestingWithMyAPI(const char * data,size_t size)28 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
29 {
30 for (uint32_t code = CMD_START_PRINT; code <= CMD_NOTIFY_PRINT_SERVICE; ++code) {
31 MessageParcel datas;
32 datas.WriteInterfaceToken(PRINT_SERVICE_INTERFACE_TOKEN);
33 datas.WriteBuffer(data, size);
34 datas.RewindRead(0);
35 MessageParcel reply;
36 MessageOption option;
37 PrintServiceAbility::GetInstance()->OnRemoteRequest(code, datas, reply, option);
38 }
39 return true;
40 }
41 }
42 }
43
44 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)45 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
46 {
47 /* Run your code on data */
48 if (data == nullptr) {
49 return 0;
50 }
51
52 if (size < OHOS::Print::U32_AT_SIZE) {
53 return 0;
54 }
55
56 /* Validate the length of size */
57 if (size == 0 || size > OHOS::Print::FOO_MAX_LEN) {
58 return 0;
59 }
60
61 char* ch = (char *)malloc(size + 1);
62 if (ch == nullptr) {
63 return 0;
64 }
65
66 (void)memset_s(ch, size + 1, 0x00, size + 1);
67 if (memcpy_s(ch, size + 1, data, size) != EOK) {
68 free(ch);
69 ch = nullptr;
70 return 0;
71 }
72
73 OHOS::Print::DoSomethingInterestingWithMyAPI(ch, size);
74 free(ch);
75 ch = nullptr;
76 return 0;
77 }
78
79