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 "getdevicenodepermissions_fuzzer.h"
17 #include <string>
18 #include "ueventd_read_cfg.h"
19 
20 namespace OHOS {
FuzzGetDeviceNodePermissions(const uint8_t * data,size_t size)21     bool FuzzGetDeviceNodePermissions(const uint8_t* data, size_t size)
22     {
23         if ((data == nullptr) || (size < sizeof(char) + sizeof(uid_t) + sizeof(gid_t) + sizeof(mode_t))) {
24             return false;
25         }
26         bool result = false;
27         unsigned int offset = 0;
28         const char *devNode = reinterpret_cast<const char*>(data + offset);
29         offset += sizeof(char);
30         uid_t *uid = reinterpret_cast<uid_t*>(const_cast<uint8_t *>(data + offset));
31         offset += sizeof(uid_t);
32         gid_t *gid = reinterpret_cast<gid_t*>(const_cast<uint8_t *>(data + offset));
33         offset += sizeof(gid_t);
34         mode_t *mode = reinterpret_cast<mode_t*>(const_cast<uint8_t *>(data + offset));
35         if (GetDeviceNodePermissions(devNode, uid, gid, mode) != 0) {
36             result = true;
37         };
38         return result;
39     }
40 }
41 
42 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)43 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
44 {
45     /* Run your code on data */
46     OHOS::FuzzGetDeviceNodePermissions(data, size);
47     return 0;
48 }