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 "camera_timer_fuzzer.h"
17 #include "camera_timer.h"
18 #include "hstream_capture.h"
19 #include "message_parcel.h"
20 #include "nativetoken_kit.h"
21 #include "token_setproc.h"
22 #include "accesstoken_kit.h"
23 #include "camera_metadata_info.h"
24 #include "metadata_utils.h"
25
26 namespace {
27
28 const int32_t LIMITSIZE = 5;
29
30 }
31
32 namespace OHOS {
33 namespace CameraStandard {
34
35 bool CameraTimerFuzzer::hasPermission = false;
36 CameraTimer *CameraTimerFuzzer::fuzz = nullptr;
37
CheckPermission()38 void CameraTimerFuzzer::CheckPermission()
39 {
40 if (!hasPermission) {
41 uint64_t tokenId;
42 const char *perms[0];
43 perms[0] = "ohos.permission.CAMERA";
44 NativeTokenInfoParams infoInstance = { .dcapsNum = 0, .permsNum = 1, .aclsNum = 0, .dcaps = NULL,
45 .perms = perms, .acls = NULL, .processName = "camera_capture", .aplStr = "system_basic",
46 };
47 tokenId = GetAccessTokenId(&infoInstance);
48 SetSelfTokenID(tokenId);
49 OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
50 hasPermission = true;
51 }
52 }
53
Test(uint8_t * rawData,size_t size)54 void CameraTimerFuzzer::Test(uint8_t *rawData, size_t size)
55 {
56 if (rawData == nullptr || size < LIMITSIZE) {
57 return;
58 }
59 CheckPermission();
60
61 if (fuzz == nullptr) {
62 fuzz = CameraTimer::GetInstance();
63 }
64 MessageParcel data;
65 data.WriteRawData(rawData, size);
66
67 data.RewindRead(0);
68
69 fuzz->IncreaseUserCount();
70 fuzz->DecreaseUserCount();
71
72 TimerCallback callback = [] {
73 // do nothing
74 };
75
76 data.RewindRead(0);
77 uint32_t interval = data.ReadUint32();
78
79 data.RewindRead(0);
80 bool once = data.ReadBool();
81
82 uint32_t timerId = fuzz->Register(callback, interval, once);
83
84 fuzz->Unregister(timerId);
85 }
86
87 } // namespace CameraStandard
88 } // namespace OHOS
89
90 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)91 extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size)
92 {
93 /* Run your code on data */
94 OHOS::CameraStandard::CameraTimerFuzzer::Test(data, size);
95 return 0;
96 }