1 /*
2 * Copyright (c) 2024 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 <iostream>
17 #include <cstddef>
18 #include <cstdint>
19 #include "audio_info.h"
20 #include "audio_interrupt_service.h"
21 #include "audio_policy_server.h"
22 #include "audio_session_info.h"
23 #include "accesstoken_kit.h"
24 #include "nativetoken_kit.h"
25 #include "token_setproc.h"
26 #include "access_token.h"
27 #include "i_hpae_manager.h"
28 #include "manager/hdi_adapter_manager.h"
29 #include "util/id_handler.h"
30 using namespace std;
31
32 namespace OHOS {
33 namespace AudioStandard {
34 using namespace std;
35 bool g_hasPermission = false;
36 bool g_hasServerInit = false;
37 const int32_t SYSTEM_ABILITY_ID = 3009;
38 const bool RUN_ON_CREATE = false;
39 const std::u16string FORMMGR_INTERFACE_TOKEN = u"IAudioPolicy";
40 static const uint8_t *RAW_DATA = nullptr;
41 static size_t g_dataSize = 0;
42 static size_t g_pos;
43 const size_t THRESHOLD = 10;
44
45 /*
46 * describe: get data from outside untrusted data(RAW_DATA) which size is according to sizeof(T)
47 * tips: only support basic type
48 */
49 template<class T>
GetData()50 T GetData()
51 {
52 T object {};
53 size_t objectSize = sizeof(object);
54 if (RAW_DATA == nullptr || objectSize > g_dataSize - g_pos) {
55 return object;
56 }
57 errno_t ret = memcpy_s(&object, objectSize, RAW_DATA + g_pos, objectSize);
58 if (ret != EOK) {
59 return {};
60 }
61 g_pos += objectSize;
62 return object;
63 }
64
65 template<class T>
GetArrLength(T & arr)66 uint32_t GetArrLength(T& arr)
67 {
68 if (arr == nullptr) {
69 AUDIO_INFO_LOG("%{public}s: The array length is equal to 0", __func__);
70 return 0;
71 }
72 return sizeof(arr) / sizeof(arr[0]);
73 }
74
AudioFuzzTestGetPermission()75 void AudioFuzzTestGetPermission()
76 {
77 if (!g_hasPermission) {
78 uint64_t tokenId;
79 constexpr int perNum = 10;
80 const char *perms[perNum] = {
81 "ohos.permission.MICROPHONE",
82 "ohos.permission.MANAGE_INTELLIGENT_VOICE",
83 "ohos.permission.MANAGE_AUDIO_CONFIG",
84 "ohos.permission.MICROPHONE_CONTROL",
85 "ohos.permission.MODIFY_AUDIO_SETTINGS",
86 "ohos.permission.ACCESS_NOTIFICATION_POLICY",
87 "ohos.permission.USE_BLUETOOTH",
88 "ohos.permission.CAPTURE_VOICE_DOWNLINK_AUDIO",
89 "ohos.permission.RECORD_VOICE_CALL",
90 "ohos.permission.MANAGE_SYSTEM_AUDIO_EFFECTS",
91 };
92
93 NativeTokenInfoParams infoInstance = {
94 .dcapsNum = 0,
95 .permsNum = 10,
96 .aclsNum = 0,
97 .dcaps = nullptr,
98 .perms = perms,
99 .acls = nullptr,
100 .processName = "audiofuzztest",
101 .aplStr = "system_basic",
102 };
103 tokenId = GetAccessTokenId(&infoInstance);
104 SetSelfTokenID(tokenId);
105 OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
106 g_hasPermission = true;
107 }
108 }
109
MoreFuzzTest()110 void MoreFuzzTest()
111 {
112 std::shared_ptr<AudioInterruptService> interruptService = std::make_shared<AudioInterruptService>();
113 interruptService->GetAudioServerProxy();
114 interruptService->WriteServiceStartupError();
115
116 int32_t pid = GetData<int32_t>();
117 interruptService->OnSessionTimeout(pid);
118 interruptService->HandleSessionTimeOutEvent(pid);
119 }
120
AddAudioSessionFuzzTest()121 void AddAudioSessionFuzzTest()
122 {
123 int32_t sessionStrategy = 0;
124
125 AudioInterrupt incomingInterrupt;
126 incomingInterrupt.audioFocusType.streamType = STREAM_MUSIC;
127 incomingInterrupt.audioFocusType.sourceType = SOURCE_TYPE_VOICE_COMMUNICATION;
128 AudioInterrupt activeInterrupt;
129 activeInterrupt.audioFocusType.streamType = STREAM_MUSIC;
130 AudioFocusEntry focusEntry;
131 focusEntry.isReject = false;
132
133 std::shared_ptr<AudioInterruptService> interruptService = std::make_shared<AudioInterruptService>();
134 interruptService->CanMixForSession(incomingInterrupt, activeInterrupt, focusEntry);
135 interruptService->CanMixForIncomingSession(incomingInterrupt, activeInterrupt, focusEntry);
136 interruptService->CanMixForActiveSession(incomingInterrupt, activeInterrupt, focusEntry);
137 interruptService->IsIncomingStreamLowPriority(focusEntry);
138 interruptService->IsActiveStreamLowPriority(focusEntry);
139 }
140
AddSetAudioManagerInterruptCallbackFuzzTest()141 void AddSetAudioManagerInterruptCallbackFuzzTest()
142 {
143 MessageParcel data;
144 data.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
145 data.WriteBuffer(RAW_DATA, g_dataSize);
146 data.RewindRead(0);
147 sptr<IRemoteObject> object = data.ReadRemoteObject();
148 std::shared_ptr<AudioInterruptService> interruptService = std::make_shared<AudioInterruptService>();
149 interruptService->GetAudioServerProxy();
150 if (object == nullptr) {
151 return;
152 }
153 interruptService->SetAudioManagerInterruptCallback(object);
154
155 int32_t zoneId = GetData<int32_t>();
156 uint32_t sessionId = GetData<uint32_t>();
157 uint32_t uid = GetData<uint32_t>();
158 interruptService->SetAudioInterruptCallback(zoneId, sessionId, object, uid);
159 }
160
ClearAudioFocusInfoListOnAccountsChangedFuzzTest()161 void ClearAudioFocusInfoListOnAccountsChangedFuzzTest()
162 {
163 int id = GetData<int>();
164 std::shared_ptr<AudioInterruptService> interruptService = std::make_shared<AudioInterruptService>();
165 interruptService->ClearAudioFocusInfoListOnAccountsChanged(id);
166 }
167
168 typedef void (*TestFuncs[4])();
169
170 TestFuncs g_testFuncs = {
171 MoreFuzzTest,
172 AddAudioSessionFuzzTest,
173 AddSetAudioManagerInterruptCallbackFuzzTest,
174 ClearAudioFocusInfoListOnAccountsChangedFuzzTest,
175 };
176
FuzzTest(const uint8_t * rawData,size_t size)177 bool FuzzTest(const uint8_t* rawData, size_t size)
178 {
179 if (rawData == nullptr) {
180 return false;
181 }
182
183 // initialize data
184 RAW_DATA = rawData;
185 g_dataSize = size;
186 g_pos = 0;
187
188 uint32_t code = GetData<uint32_t>();
189 uint32_t len = GetArrLength(g_testFuncs);
190 if (len > 0) {
191 g_testFuncs[code % len]();
192 } else {
193 AUDIO_INFO_LOG("%{public}s: The len length is equal to 0", __func__);
194 }
195
196 return true;
197 }
198 } // namespace AudioStandard
199 } // namesapce OHOS
200
201 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)202 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
203 {
204 if (size < OHOS::AudioStandard::THRESHOLD) {
205 return 0;
206 }
207
208 OHOS::AudioStandard::AudioFuzzTestGetPermission();
209 OHOS::AudioStandard::FuzzTest(data, size);
210 return 0;
211 }