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 }