1 /*
2 * Copyright (c) 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 "codec_fuzzer.h"
17 #include <cstddef>
18 #include <cstdint>
19 #include "hdf_log.h"
20 #include "v3_0/codec_component_manager_stub.h"
21
22 using namespace OHOS::HDI::Codec::V3_0;
23
dlclose(void * handle)24 extern "C" __attribute__((visibility("default"))) int dlclose(void* handle)
25 {
26 return 0;
27 }
28
29 namespace OHOS {
30 constexpr size_t THRESHOLD = 10;
31 constexpr int32_t OFFSET = 4;
32 const std::u16string CODEC_INTERFACE_TOKEN = u"ohos.hdi.codec.V3_0.ICodecComponentManager";
33 #define CMD_CODEC_COMPONENT_MANAGER_GREATE_COMPONENT 3
34
Convert2Uint32(const uint8_t * ptr)35 uint32_t Convert2Uint32(const uint8_t* ptr)
36 {
37 if (ptr == nullptr) {
38 return 0;
39 }
40 /*
41 * Move the 0th digit 24 to the left, the first digit 16 to the left, the second digit 8 to the left,
42 * and the third digit no left
43 */
44 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
45 }
46
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)47 bool DoSomethingInterestingWithMyAPI(const uint8_t* rawData, size_t size)
48 {
49 if (rawData == nullptr) {
50 return false;
51 }
52 uint32_t code = Convert2Uint32(rawData);
53 rawData = rawData + OFFSET;
54 size = size - OFFSET;
55
56 MessageParcel data;
57 data.WriteInterfaceToken(CODEC_INTERFACE_TOKEN);
58 data.WriteBuffer(rawData, size);
59 data.RewindRead(0);
60 MessageParcel reply;
61 MessageOption option;
62 sptr<ICodecComponentManager> g_codecComponentManager = ICodecComponentManager::Get(true);
63 if (g_codecComponentManager == nullptr) {
64 HDF_LOGE("%{public}s:ICodecComponentManager::Get failed.", __func__);
65 return false;
66 }
67 sptr<CodecComponentManagerStub> codecComponentManager = new CodecComponentManagerStub(g_codecComponentManager);
68 if (codecComponentManager == nullptr) {
69 HDF_LOGE("%{public}s:new codecComponentManager failed.", __func__);
70 return false;
71 }
72 int32_t ret = codecComponentManager->OnRemoteRequest(code, data, reply, option);
73 if (ret != HDF_SUCCESS) {
74 return false;
75 }
76
77 if (code == CMD_CODEC_COMPONENT_MANAGER_GREATE_COMPONENT) {
78 uint32_t componentId = 0;
79 if (!reply.ReadUint32(componentId)) {
80 HDF_LOGE("%{public}s:read componentId failed!", __func__);
81 return false;
82 }
83 ret = g_codecComponentManager->DestroyComponent(componentId);
84 if (ret != HDF_SUCCESS) {
85 HDF_LOGE("%{public}s: DestroyComponent failed\n", __func__);
86 return false;
87 }
88 }
89
90 return true;
91 }
92 }
93
94 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)95 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
96 {
97 if (size < OHOS::THRESHOLD) {
98 return 0;
99 }
100
101 /* Run your code on data */
102 OHOS::DoSomethingInterestingWithMyAPI(data, size);
103 return 0;
104 }
105
106