1 /*
2 * Copyright (c) 2022-2023 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 "urihandler_fuzzer.h"
17
18 #include "copy_uri_handler.h"
19 #include "paste_uri_handler.h"
20
21 using namespace OHOS::MiscServices;
22
23 namespace OHOS {
24
25 template<class T>
TypeCast(const uint8_t * data,int * pos=nullptr)26 T TypeCast(const uint8_t *data, int *pos = nullptr)
27 {
28 if (pos) {
29 *pos += sizeof(T);
30 }
31 return *(reinterpret_cast<const T*>(data));
32 }
33
FuzzUriToFd(const uint8_t * rawData,size_t size)34 bool FuzzUriToFd(const uint8_t *rawData, size_t size)
35 {
36 if (rawData == nullptr || size < (sizeof(uint32_t) + sizeof(uint32_t))) {
37 return true;
38 }
39 int pos = 0;
40 uint32_t value = TypeCast<uint32_t>(rawData, &pos);
41 std::string uri(reinterpret_cast<const char *>(rawData + pos), size - pos);
42 bool isClient = value % 2;
43 CopyUriHandler uriHandler;
44 uriHandler.ToFd(uri, isClient);
45 return true;
46 }
47
FuzzCopyUriHandlerToUri(const uint8_t * rawData,size_t size)48 bool FuzzCopyUriHandlerToUri(const uint8_t *rawData, size_t size)
49 {
50 if (rawData == nullptr || size < sizeof(int32_t)) {
51 return true;
52 }
53 int32_t fd = TypeCast<int32_t>(rawData, nullptr);
54 CopyUriHandler uriHandler;
55 (void)uriHandler.ToUri(fd);
56 return true;
57 }
58
FuzzPasteUriHandlerToUri(const uint8_t * rawData,size_t size)59 bool FuzzPasteUriHandlerToUri(const uint8_t *rawData, size_t size)
60 {
61 if (rawData == nullptr || size < sizeof(int32_t)) {
62 return true;
63 }
64 int32_t fd = TypeCast<int32_t>(rawData, nullptr);
65 if (fd >= 0) {
66 return true;
67 }
68 PasteUriHandler pasteUriHandler;
69 (void)pasteUriHandler.ToUri(fd);
70 return true;
71 }
72
FuzzPasteUriHandlerIsPaste(const uint8_t * rawData,size_t size)73 bool FuzzPasteUriHandlerIsPaste(const uint8_t *rawData, size_t size)
74 {
75 PasteUriHandler pasteUriHandler;
76 (void)pasteUriHandler.IsPaste();
77 return true;
78 }
79 } // namespace OHOS
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
83 {
84 /* Run your code on data */
85 OHOS::FuzzUriToFd(data, size);
86 OHOS::FuzzCopyUriHandlerToUri(data, size);
87 OHOS::FuzzPasteUriHandlerToUri(data, size);
88 OHOS::FuzzPasteUriHandlerIsPaste(data, size);
89 return 0;
90 }