1 /*
2 * Copyright (c) 2022 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 #include "sta_fuzzer.h"
16 #include "wlan_common_fuzzer.h"
17
18 namespace OHOS {
19 namespace WIFI {
20 constexpr size_t THRESHOLD = 10;
21 const char *g_wlanServiceName = "wlan_interface_service";
22 const int32_t wlanType = PROTOCOL_80211_IFTYPE_STATION;
23 struct IWlanInterface *g_wlanObj = nullptr;
24
FuzzStartScan(struct IWlanInterface * interface,const uint8_t * rawData)25 static void FuzzStartScan(struct IWlanInterface *interface, const uint8_t *rawData)
26 {
27 struct HdfWifiScan scan = {0};
28 struct HdfFeatureInfo feature;
29 feature.ifName = const_cast<char *>(reinterpret_cast<const char *>(rawData));
30 feature.type = *const_cast<int32_t *>(reinterpret_cast<const int32_t *>(rawData));
31
32 interface->StartScan(interface, &feature, &scan);
33 HDF_LOGI("%{public}s: success", __FUNCTION__);
34 }
35
FuzzSetScanningMacAddress(struct IWlanInterface * interface,const uint8_t * rawData)36 static void FuzzSetScanningMacAddress(struct IWlanInterface *interface, const uint8_t *rawData)
37 {
38 struct HdfFeatureInfo feature;
39 feature.ifName = const_cast<char *>(reinterpret_cast<const char *>(rawData));
40 feature.type = *const_cast<int32_t *>(reinterpret_cast<const int32_t *>(rawData));
41 const uint8_t *scanMac = rawData;
42 uint32_t macLen = 0;
43
44 if (GetWlanDataSize(&macLen) != HDF_SUCCESS) {
45 HDF_LOGE("%{public}s: get data size failed!", __FUNCTION__);
46 }
47
48 interface->SetScanningMacAddress(interface, &feature, scanMac, macLen);
49 HDF_LOGI("%{public}s: success", __FUNCTION__);
50 }
51
52 static FuzzWlanFuncs g_fuzzWlanFuncs[] = {
53 FuzzStartScan,
54 FuzzGetChipId,
55 FuzzGetDeviceMacAddress,
56 FuzzGetFeatureType,
57 FuzzGetFreqsWithBand,
58 FuzzGetNetworkIfaceName,
59 FuzzSetMacAddress,
60 FuzzSetTxPower,
61 FuzzGetPowerMode,
62 FuzzSetPowerMode,
63 FuzzGetIfNamesByChipId,
64 FuzzResetDriver,
65 FuzzStartChannelMeas,
66 FuzzSetProjectionScreenParam,
67 FuzzWifiSendCmdIoctl,
68 FuzzGetFeatureByIfName,
69 FuzzGetStaInfo,
70 FuzzGetChannelMeasResult,
71 FuzzSetScanningMacAddress,
72 };
73
FuncToOptimal(struct IWlanInterface * interface,uint32_t cmdId,const uint8_t * data)74 static void FuncToOptimal(struct IWlanInterface *interface, uint32_t cmdId, const uint8_t *data)
75 {
76 FuzzWlanFuncs fuzzWlanFunc = g_fuzzWlanFuncs[cmdId];
77 if (fuzzWlanFunc != nullptr) {
78 fuzzWlanFunc(interface, data);
79 }
80 return;
81 }
82
DoSomethingInterestingWithMyAPI(const uint8_t * rawData,size_t size)83 bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
84 {
85 struct HdfFeatureInfo ifeature;
86 bool result = false;
87
88 if (rawData == nullptr || size == 0) {
89 return false;
90 }
91 uint32_t cmdId = Convert2Uint32(rawData) % ((sizeof(g_fuzzWlanFuncs) / sizeof(g_fuzzWlanFuncs[0])));
92 g_wlanObj = IWlanInterfaceGetInstance(g_wlanServiceName, false);
93 if (g_wlanObj == nullptr) {
94 HDF_LOGE("%{public}s: g_wlanObj is null", __FUNCTION__);
95 return result;
96 }
97 uint32_t dataSize = size - OFFSET;
98 uint8_t *tmpRawData = reinterpret_cast<uint8_t *>(OsalMemCalloc(dataSize + 1));
99 if (tmpRawData == nullptr) {
100 HDF_LOGE("%{public}s: OsalMemCalloc failed!", __FUNCTION__);
101 return result;
102 }
103 int32_t ret = g_wlanObj->Start(g_wlanObj);
104 if (ret != HDF_SUCCESS) {
105 HDF_LOGE("%{public}s: Start failed! ret=%{public}d", __FUNCTION__, ret);
106 OsalMemFree(tmpRawData);
107 return result;
108 }
109 do {
110 if (PreProcessRawData(rawData, size, tmpRawData, dataSize + 1) != true) {
111 break;
112 }
113 ret = g_wlanObj->CreateFeature(g_wlanObj, wlanType, &ifeature);
114 if (ret != HDF_SUCCESS) {
115 HDF_LOGE("%{public}s: CreateFeature failed! ret=%{public}d", __FUNCTION__, ret);
116 break;
117 }
118 FuncToOptimal(g_wlanObj, cmdId, tmpRawData);
119 ret = g_wlanObj->DestroyFeature(g_wlanObj, &ifeature);
120 if (ret != HDF_SUCCESS) {
121 HDF_LOGE("%{public}s: DestroyFeature failed! ret=%{public}d", __FUNCTION__, ret);
122 break;
123 }
124 result = true;
125 } while (false);
126 ret = g_wlanObj->Stop(g_wlanObj);
127 if (ret != HDF_SUCCESS) {
128 HDF_LOGE("%{public}s: Stop failed! ret=%{public}d", __FUNCTION__, ret);
129 result = false;
130 }
131 IWlanInterfaceReleaseInstance(g_wlanServiceName, g_wlanObj, false);
132 OsalMemFree(tmpRawData);
133 return result;
134 }
135 } // namespace WIFI
136 } // namespace OHOS
137
138 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)139 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
140 {
141 if (size < OHOS::WIFI::THRESHOLD) {
142 return 0;
143 }
144
145 /* Run your code on data */
146 OHOS::WIFI::DoSomethingInterestingWithMyAPI(data, size);
147 return 0;
148 }
149