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 "allowed_usb_devices_plugin_fuzzer.h"
17
18 #include <system_ability_definition.h>
19
20 #include "allowed_usb_devices_plugin.h"
21 #include "array_usb_device_id_serializer.h"
22 #include "common_fuzzer.h"
23 #include "edm_ipc_interface_code.h"
24 #include "func_code.h"
25 #include "get_data_template.h"
26 #include "ienterprise_device_mgr.h"
27 #include "message_parcel.h"
28 #include "plugin_manager.h"
29 #include "usb_device_id.h"
30 #include "utils.h"
31
32 namespace OHOS {
33 namespace EDM {
34 constexpr size_t MIN_SIZE = 20;
35 constexpr int32_t WITHOUT_USERID = 0;
36 constexpr int32_t USB_DEVICE_ID_SIZE = 1;
37
DoSomethingInterestingWithAPI(const uint8_t * data,size_t size,int32_t pos,int32_t stringSize)38 void DoSomethingInterestingWithAPI(const uint8_t* data, size_t size, int32_t pos, int32_t stringSize)
39 {
40 AllowUsbDevicesPlugin plugin;
41 std::string adminName = CommonFuzzer::GetString(data, pos, stringSize, size);
42 std::vector<UsbDeviceId> emptyData;
43 std::vector<UsbDeviceId> policyData = { GetData<UsbDeviceId>() };
44 std::vector<UsbDeviceId> mergeData = { GetData<UsbDeviceId>() };
45 int32_t userId = CommonFuzzer::GetU32Data(data);
46 plugin.OnAdminRemove(adminName, emptyData, mergeData, userId);
47 plugin.OnAdminRemove(adminName, policyData, emptyData, userId);
48 plugin.OnAdminRemove(adminName, policyData, mergeData, userId);
49
50 int32_t systemAbilityId = CommonFuzzer::GetU32Data(data);
51 plugin.OnOtherServiceStart(systemAbilityId);
52 }
53
54 // Fuzzer entry point.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)55 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
56 {
57 if (data == nullptr) {
58 return 0;
59 }
60 if (size < MIN_SIZE) {
61 return 0;
62 }
63 int32_t pos = 0;
64 int32_t stringSize = size / 10;
65 for (uint32_t operateType = static_cast<uint32_t>(FuncOperateType::GET);
66 operateType <= static_cast<uint32_t>(FuncOperateType::REMOVE); operateType++) {
67 uint32_t code = EdmInterfaceCode::ALLOWED_USB_DEVICES;
68 code = POLICY_FUNC_CODE(operateType, code);
69
70 AppExecFwk::ElementName admin;
71 admin.SetBundleName(CommonFuzzer::GetString(data, pos, stringSize, size));
72 admin.SetAbilityName(CommonFuzzer::GetString(data, pos, stringSize, size));
73 MessageParcel parcel;
74 parcel.WriteInterfaceToken(IEnterpriseDeviceMgrIdl::GetDescriptor());
75 parcel.WriteInt32(WITHOUT_USERID);
76 if (operateType) {
77 parcel.WriteParcelable(&admin);
78 parcel.WriteInt32(USB_DEVICE_ID_SIZE);
79 UsbDeviceId usbDeviceId = GetData<UsbDeviceId>();
80 std::vector<UsbDeviceId> usbDeviceIds = { usbDeviceId };
81 std::for_each(usbDeviceIds.begin(), usbDeviceIds.end(),
82 [&](const auto usbDeviceId) { usbDeviceId.Marshalling(parcel); });
83 } else {
84 parcel.WriteString("");
85 parcel.WriteInt32(0);
86 parcel.WriteParcelable(&admin);
87 }
88 CommonFuzzer::OnRemoteRequestFuzzerTest(code, data, size, parcel);
89 }
90
91 DoSomethingInterestingWithAPI(data, size, pos, stringSize);
92 return 0;
93 }
94 } // namespace EDM
95 } // namespace OHOS