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 "usbmgrex_fuzzer.h"
17 #include <cstddef>
18 #include <cstdint>
19 #include "usb_service.h"
20
21 using namespace OHOS::HDI::Usb::V1_0;
22 using namespace OHOS::USB;
23
24 namespace OHOS {
25 constexpr size_t THRESHOLD = 10;
26 constexpr int32_t OFFSET = 4;
27 enum class UsbInterfaceCode {
28 USB_FUN_HAS_RIGHT = 0,
29 USB_FUN_REQUEST_RIGHT,
30 USB_FUN_REMOVE_RIGHT,
31 USB_FUN_OPEN_DEVICE,
32 USB_FUN_GET_DEVICE,
33 USB_FUN_GET_DEVICES,
34 USB_FUN_GET_CURRENT_FUNCTIONS,
35 USB_FUN_SET_CURRENT_FUNCTIONS,
36 USB_FUN_USB_FUNCTIONS_FROM_STRING,
37 USB_FUN_USB_FUNCTIONS_TO_STRING,
38 USB_FUN_CLAIM_INTERFACE,
39 USB_FUN_RELEASE_INTERFACE,
40 USB_FUN_BULK_TRANSFER_READ,
41 USB_FUN_BULK_TRANSFER_WRITE,
42 USB_FUN_CONTROL_TRANSFER,
43 USB_FUN_SET_ACTIVE_CONFIG,
44 USB_FUN_GET_ACTIVE_CONFIG,
45 USB_FUN_SET_INTERFACE,
46 USB_FUN_GET_PORTS,
47 USB_FUN_GET_SUPPORTED_MODES,
48 USB_FUN_SET_PORT_ROLE,
49 USB_FUN_REQUEST_QUEUE,
50 USB_FUN_REQUEST_WAIT,
51 USB_FUN_REQUEST_CANCEL,
52 USB_FUN_GET_DESCRIPTOR,
53 USB_FUN_GET_FILEDESCRIPTOR,
54 USB_FUN_CLOSE_DEVICE,
55 USB_FUN_BULK_AYSNC_READ,
56 USB_FUN_BULK_AYSNC_WRITE,
57 USB_FUN_BULK_AYSNC_CANCEL,
58 USB_FUN_REG_BULK_CALLBACK,
59 USB_FUN_UNREG_BULK_CALLBACK,
60 USB_FUN_ADD_RIGHT,
61 USB_FUN_DISABLE_GLOBAL_INTERFACE,
62 USB_FUN_DISABLE_DEVICE,
63 USB_FUN_DISABLE_INTERFACE_TYPE,
64 USB_FUN_GET_DEVICE_SPEED,
65 USB_FUN_GET_DRIVER_ACTIVE_STATUS,
66 USB_FUN_ADD_ACCESS_RIGHT,
67 };
68 const std::u16string USB_INTERFACE_TOKEN = u"ohos.usb.IUsbSrv";
69 static int32_t CODE = 0;
70
SetTestCaseNative(TokenInfoParams * infoInstance)71 void SetTestCaseNative(TokenInfoParams *infoInstance)
72 {
73 uint64_t tokenId = GetAccessTokenId(infoInstance);
74 int ret = SetSelfTokenID(tokenId);
75 if (ret == 0) {
76 USB_HILOGI(MODULE_USB_SERVICE, "SetSelfTokenID success %{public}d", __LINE__);
77 } else {
78 USB_HILOGE(MODULE_USB_SERVICE, "SetSelfTokenID fail %{public}d", ret);
79 }
80 ret = Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
81 if (ret == 0) {
82 USB_HILOGI(MODULE_USB_SERVICE, "ReloadNativeTokenInfo success %{public}d", __LINE__);
83 } else {
84 USB_HILOGE(MODULE_USB_SERVICE, "ReloadNativeTokenInfo fail %{public}d", ret);
85 }
86 }
87
GrantPermissionSysNative()88 void GrantPermissionSysNative()
89 {
90 const char **permsInfo = new(std::nothrow)const char* [1];
91 permsInfo[0] = "ohos.permission.MANAGE_USB_CONFIG";
92 TokenInfoParams g_sysInfoInstance = {
93 .dcapsNum = 0,
94 .permsNum = 1,
95 .aclsNum = 0,
96 .dcaps = nullptr,
97 .perms = permsInfo,
98 .acls = nullptr,
99 .processName = "usb_manager_test_sys_with_perms",
100 .aplStr = "system_basic",
101 };
102 SetTestCaseNative(&g_sysInfoInstance);
103 }
104
GrantPermissionNormalNative()105 void GrantPermissionNormalNative()
106 {
107 TokenInfoParams g_normalInfoInstance = {
108 .dcapsNum = 0,
109 .permsNum = 0,
110 .aclsNum = 0,
111 .dcaps = nullptr,
112 .perms = nullptr,
113 .acls = nullptr,
114 .processName = "usb_manager_test_normal",
115 .aplStr = "normal",
116 };
117 SetTestCaseNative(&g_normalInfoInstance);
118 }
119
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)120 bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
121 {
122 if (rawData == nullptr) {
123 return false;
124 }
125 if (CODE > static_cast<int32_t>(UsbInterfaceCode::USB_FUN_ADD_ACCESS_RIGHT)) {
126 return true;
127 }
128 uint32_t code = CODE;
129 if (code <= static_cast<int32_t>(UsbInterfaceCode::USB_FUN_ADD_ACCESS_RIGHT)) {
130 CODE += 1;
131 }
132 rawData = rawData + OFFSET;
133 size = size - OFFSET;
134
135 MessageParcel data;
136 data.WriteInterfaceToken(USB_INTERFACE_TOKEN);
137 data.WriteBuffer(rawData, size);
138 data.RewindRead(0);
139 MessageParcel reply;
140 MessageOption option;
141 GrantPermissionSysNative();
142 DelayedSpSingleton<UsbService>::GetInstance()->OnRemoteRequest(code, data, reply, option);
143 return true;
144 }
145 } // namespace OHOS
146
147 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)148 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
149 {
150 if (size < OHOS::THRESHOLD) {
151 return 0;
152 }
153
154 /* Run your code on data */
155 OHOS::DoSomethingInterestingWithMyAPI(data, size);
156 return 0;
157 }
158