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_RESET_DEVICE,
33 USB_FUN_GET_DEVICE,
34 USB_FUN_GET_DEVICES,
35 USB_FUN_GET_CURRENT_FUNCTIONS,
36 USB_FUN_SET_CURRENT_FUNCTIONS,
37 USB_FUN_USB_FUNCTIONS_FROM_STRING,
38 USB_FUN_USB_FUNCTIONS_TO_STRING,
39 USB_FUN_CLAIM_INTERFACE,
40 USB_FUN_RELEASE_INTERFACE,
41 USB_FUN_BULK_TRANSFER_READ,
42 USB_FUN_BULK_TRANSFER_WRITE,
43 USB_FUN_CONTROL_TRANSFER,
44 USB_FUN_USB_CONTROL_TRANSFER,
45 USB_FUN_SET_ACTIVE_CONFIG,
46 USB_FUN_GET_ACTIVE_CONFIG,
47 USB_FUN_SET_INTERFACE,
48 USB_FUN_GET_PORTS,
49 USB_FUN_GET_SUPPORTED_MODES,
50 USB_FUN_SET_PORT_ROLE,
51 USB_FUN_REQUEST_QUEUE,
52 USB_FUN_REQUEST_WAIT,
53 USB_FUN_REQUEST_CANCEL,
54 USB_FUN_GET_DESCRIPTOR,
55 USB_FUN_GET_FILEDESCRIPTOR,
56 USB_FUN_CLOSE_DEVICE,
57 USB_FUN_BULK_AYSNC_READ,
58 USB_FUN_BULK_AYSNC_WRITE,
59 USB_FUN_BULK_AYSNC_CANCEL,
60 USB_FUN_REG_BULK_CALLBACK,
61 USB_FUN_UNREG_BULK_CALLBACK,
62 USB_FUN_ADD_RIGHT,
63 USB_FUN_DISABLE_GLOBAL_INTERFACE,
64 USB_FUN_DISABLE_DEVICE,
65 USB_FUN_DISABLE_INTERFACE_TYPE,
66 USB_FUN_CLEAR_HALT,
67 USB_FUN_GET_DEVICE_SPEED,
68 USB_FUN_GET_DRIVER_ACTIVE_STATUS,
69 USB_FUN_ADD_ACCESS_RIGHT,
70 USB_FUN_BULK_TRANSFER_READ_WITH_LENGTH,
71 USB_FUN_ATTACH_KERNEL_DRIVER,
72 USB_FUN_DETACH_KERNEL_DRIVER,
73 };
74 const std::u16string USB_INTERFACE_TOKEN = u"ohos.usb.IUsbServer";
75 static uint32_t g_usbInterfaceCode = 0;
76 static constexpr uint32_t USB_INTERFACE_CODE_COUNT = 43;
SetTestCaseNative(TokenInfoParams * infoInstance)77 void SetTestCaseNative(TokenInfoParams *infoInstance)
78 {
79 uint64_t tokenId = GetAccessTokenId(infoInstance);
80 int ret = SetSelfTokenID(tokenId);
81 if (ret == 0) {
82 USB_HILOGI(MODULE_USB_SERVICE, "SetSelfTokenID success %{public}d", __LINE__);
83 } else {
84 USB_HILOGE(MODULE_USB_SERVICE, "SetSelfTokenID fail %{public}d", ret);
85 }
86 ret = Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
87 if (ret == 0) {
88 USB_HILOGI(MODULE_USB_SERVICE, "ReloadNativeTokenInfo success %{public}d", __LINE__);
89 } else {
90 USB_HILOGE(MODULE_USB_SERVICE, "ReloadNativeTokenInfo fail %{public}d", ret);
91 }
92 }
93
GrantPermissionSysNative()94 void GrantPermissionSysNative()
95 {
96 const char **permsInfo = new(std::nothrow)const char* [1];
97 permsInfo[0] = "ohos.permission.MANAGE_USB_CONFIG";
98 TokenInfoParams g_sysInfoInstance = {
99 .dcapsNum = 0,
100 .permsNum = 1,
101 .aclsNum = 0,
102 .dcaps = nullptr,
103 .perms = permsInfo,
104 .acls = nullptr,
105 .processName = "usb_manager_test_sys_with_perms",
106 .aplStr = "system_basic",
107 };
108 SetTestCaseNative(&g_sysInfoInstance);
109 }
110
GrantPermissionNormalNative()111 void GrantPermissionNormalNative()
112 {
113 TokenInfoParams g_normalInfoInstance = {
114 .dcapsNum = 0,
115 .permsNum = 0,
116 .aclsNum = 0,
117 .dcaps = nullptr,
118 .perms = nullptr,
119 .acls = nullptr,
120 .processName = "usb_manager_test_normal",
121 .aplStr = "normal",
122 };
123 SetTestCaseNative(&g_normalInfoInstance);
124 }
125
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)126 bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
127 {
128 if (rawData == nullptr) {
129 return false;
130 }
131 if (g_usbInterfaceCode > USB_INTERFACE_CODE_COUNT) {
132 return true;
133 }
134 uint32_t code = g_usbInterfaceCode;
135 if (code <= USB_INTERFACE_CODE_COUNT) {
136 g_usbInterfaceCode += 1;
137 }
138 rawData = rawData + OFFSET;
139 size = size - OFFSET;
140
141 MessageParcel data;
142 data.WriteInterfaceToken(USB_INTERFACE_TOKEN);
143 data.WriteBuffer(rawData, size);
144 data.RewindRead(0);
145 MessageParcel reply;
146 MessageOption option;
147 DelayedSpSingleton<UsbService>::GetInstance()->OnRemoteRequest(code, data, reply, option);
148 return true;
149 }
150 } // namespace OHOS
151
152 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)153 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
154 {
155 if (size < OHOS::THRESHOLD) {
156 return 0;
157 }
158
159 /* Run your code on data */
160 OHOS::DoSomethingInterestingWithMyAPI(data, size);
161 return 0;
162 }
163