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 "usb_read_only_plugin_fuzzer.h"
17
18 #include <system_ability_definition.h>
19
20 #include "common_fuzzer.h"
21 #include "edm_ipc_interface_code.h"
22 #include "ienterprise_device_mgr.h"
23 #include "func_code.h"
24 #include "message_parcel.h"
25 #define private public
26 #include "usb_read_only_plugin.h"
27 #undef private
28 #include "utils.h"
29
30 namespace OHOS {
31 namespace EDM {
32 constexpr size_t MIN_SIZE = 16;
33 constexpr int32_t WITHOUT_USERID = 0;
34
35 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)36 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
37 {
38 if (data == nullptr) {
39 return 0;
40 }
41 if (size < MIN_SIZE) {
42 return 0;
43 }
44 int32_t pos = 0;
45 int32_t stringSize = size / 6;
46 for (uint32_t operateType = static_cast<uint32_t>(FuncOperateType::GET);
47 operateType <= static_cast<uint32_t>(FuncOperateType::REMOVE); operateType++) {
48 uint32_t code = EdmInterfaceCode::USB_READ_ONLY;
49 code = POLICY_FUNC_CODE(operateType, code);
50
51 AppExecFwk::ElementName admin;
52 admin.SetBundleName(CommonFuzzer::GetString(data, pos, stringSize, size));
53 admin.SetAbilityName(CommonFuzzer::GetString(data, pos, stringSize, size));
54 MessageParcel parcel;
55 parcel.WriteInterfaceToken(IEnterpriseDeviceMgrIdl::GetDescriptor());
56 parcel.WriteInt32(WITHOUT_USERID);
57 if (operateType) {
58 parcel.WriteParcelable(&admin);
59 int32_t isReadOnly = CommonFuzzer::GetU32Data(data) % BINARY_DECISION_DIVISOR;
60 parcel.WriteInt32(isReadOnly);
61 } else {
62 parcel.WriteString("");
63 parcel.WriteInt32(0);
64 parcel.WriteParcelable(&admin);
65 }
66 CommonFuzzer::OnRemoteRequestFuzzerTest(code, data, size, parcel);
67 }
68 UsbReadOnlyPlugin plugin;
69 std::vector<USB::UsbDeviceType> usbDeviceTypes;
70 USB::UsbDeviceType usbDeviceType;
71 usbDeviceType.baseClass = CommonFuzzer::GetU32Data(data);
72 usbDeviceType.subClass = CommonFuzzer::GetU32Data(data);
73 usbDeviceType.protocol = CommonFuzzer::GetU32Data(data);
74 usbDeviceType.isDeviceType = CommonFuzzer::GetU32Data(data) % 2;
75 usbDeviceTypes.emplace_back(usbDeviceType);
76 plugin.DealDisablePolicy(usbDeviceTypes);
77 std::string fuzzString(reinterpret_cast<const char*>(data), size);
78 std::string adminName = fuzzString;
79 std::string policyData = fuzzString;
80 std::string mergeData = fuzzString;
81 int32_t userId = CommonFuzzer::GetU32Data(data);
82 plugin.OnAdminRemove(adminName, policyData, mergeData, userId);
83 return 0;
84 }
85 } // namespace EDM
86 } // namespace OHOS