1 /*
2 * Copyright (c) 2025 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 <unistd.h>
17 #include <fcntl.h>
18 #include "native_avsource.h"
19 #include "native_avformat.h"
20 #include "native_avcodec_base.h"
21
22 #define FUZZ_PROJECT_NAME "demuxer_fuzzer"
23 using namespace std;
24 namespace OHOS {
25 const int64_t EXPECT_SIZE = 64;
26 const char* TEST_FILE_PATH = "/data/test/demuxergetcommentdatafuzztest.mp4";
27
CheckDataValidity(const uint8_t * data,size_t size)28 bool CheckDataValidity(const uint8_t *data, size_t size)
29 {
30 if (size < EXPECT_SIZE) {
31 return false;
32 }
33 int32_t fd = open(TEST_FILE_PATH, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
34 if (fd < 0) {
35 return false;
36 }
37 int len = write(fd, data, size);
38 if (len <= 0) {
39 close(fd);
40 return false;
41 }
42 close(fd);
43 return true;
44 }
45
DemuxerGetCommentDataFuzzTest(const uint8_t * data,size_t size)46 void DemuxerGetCommentDataFuzzTest(const uint8_t *data, size_t size)
47 {
48 if (!CheckDataValidity(data, size)) {
49 return;
50 }
51 const char* metaStringValue = nullptr;
52 auto source = OH_AVSource_CreateWithURI(const_cast<char*>(TEST_FILE_PATH));
53 if (source == nullptr) {
54 return;
55 }
56 auto metaFormat = OH_AVSource_GetSourceFormat(source);
57 if (metaFormat == nullptr) {
58 OH_AVSource_Destroy(source);
59 return;
60 }
61 OH_AVFormat_GetStringValue(metaFormat, OH_MD_KEY_COMMENT, &metaStringValue);
62 OH_AVSource_Destroy(source);
63 OH_AVFormat_Destroy(metaFormat);
64 (void)remove(TEST_FILE_PATH);
65 return;
66 }
67 }
68
69 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)70 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
71 {
72 /* Run your code on data */
73 OHOS::DemuxerGetCommentDataFuzzTest(data, size);
74 return 0;
75 }