1 /*
2 * Copyright (c) 2021 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 "dopartitions_fuzzer.h"
17
18 #include <array>
19 #include <cstddef>
20 #include <cstdint>
21 #include <iostream>
22 #include <string>
23 #include <vector>
24 #include "log/log.h"
25 #include "partitions.h"
26 #include "securec.h"
27
28 using namespace Updater;
29 namespace {
30 static constexpr int FSTAB_NAME_LENGTH = 20;
31 }
InitEmmcPartition(struct Partition & part,const std::string & partName,size_t start,size_t length)32 static void InitEmmcPartition(struct Partition &part, const std::string &partName, size_t start, size_t length)
33 {
34 part.partName = partName;
35 part.start = start;
36 part.length = length;
37 /* Paramters below just give a random values, DoPartition will ignore the values. */
38 part.devName = "mmcblk0px";
39 part.fsType = "emmc";
40 }
41
42 namespace OHOS {
FuzzDoPartitions(const uint8_t * data,size_t size)43 bool FuzzDoPartitions(const uint8_t* data, size_t size)
44 {
45 PartitonList nList;
46 struct Partition myPaty;
47 (void)memset_s(&myPaty, sizeof(struct Partition), 0, sizeof(struct Partition));
48
49 if (size < FSTAB_NAME_LENGTH) { /* fstable name length */
50 InitEmmcPartition(myPaty, reinterpret_cast<const char*>(data), 0, size);
51 nList.push_back(&myPaty);
52 DoPartitions(nList);
53 }
54
55 return 0;
56 }
57 }
58
59 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)60 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
61 {
62 /* Run your code on data */
63 OHOS::FuzzDoPartitions(data, size);
64 return 0;
65 }
66
67