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
16#include "ap_fuzzer.h"
17#include "wlan_common_fuzzer.h"
18
19namespace OHOS {
20namespace WIFI {
21constexpr size_t THRESHOLD = 10;
22const char *g_wlanServiceName = "wlan_interface_service";
23const int32_t WLAN_MAX_NUM_STA_WITH_AP = 4;
24const int32_t wlanType = PROTOCOL_80211_IFTYPE_AP;
25struct IWlanInterface *g_wlanObj = nullptr;
26uint32_t num = 0;
27
28void FuzzGetAssociatedStas(struct IWlanInterface *interface, const uint8_t *rawData)
29{
30    struct HdfFeatureInfo feature;
31    struct HdfStaInfo staInfo[WLAN_MAX_NUM_STA_WITH_AP] = {{0}};
32    uint32_t staInfoLen = WLAN_MAX_NUM_STA_WITH_AP;
33    feature.type = *const_cast<int32_t *>(reinterpret_cast<const int32_t *>(rawData));
34    feature.ifName = const_cast<char *>(reinterpret_cast<const char *>(rawData));
35
36    interface->GetAssociatedStas(interface, &feature, staInfo, &staInfoLen, &num);
37    HDF_LOGI("%{public}s: success", __FUNCTION__);
38}
39
40void FuzzSetCountryCode(struct IWlanInterface *interface, const uint8_t *rawData)
41{
42    const char *mac = reinterpret_cast<const char *>(rawData);
43    uint32_t macLen = *const_cast<int32_t *>(reinterpret_cast<const int32_t *>(rawData));
44    struct HdfFeatureInfo feature;
45    feature.ifName = const_cast<char *>(reinterpret_cast<const char *>(rawData));
46    feature.type = *const_cast<uint32_t *>(reinterpret_cast<const uint32_t *>(rawData));
47
48    interface->SetCountryCode(interface, &feature, mac, macLen);
49    HDF_LOGI("%{public}s: success", __FUNCTION__);
50}
51
52void FuzzGetApBandwidth(struct IWlanInterface *interface, const uint8_t *rawData)
53{
54    const char *ifName = const_cast<char *>(reinterpret_cast<const char *>(rawData));
55    uint8_t bandwidth;
56    interface->GetApBandwidth(interface, ifName, &bandwidth);
57    HDF_LOGI("%{public}s: success", __FUNCTION__);
58}
59
60static FuzzWlanFuncs g_fuzzWlanFuncs[] = {
61    FuzzGetAssociatedStas,
62    FuzzSetCountryCode,
63    FuzzGetApBandwidth,
64    FuzzGetChipId,
65    FuzzGetDeviceMacAddress,
66    FuzzGetFeatureType,
67    FuzzGetFreqsWithBand,
68    FuzzGetNetworkIfaceName,
69    FuzzSetMacAddress,
70    FuzzSetTxPower,
71    FuzzGetPowerMode,
72    FuzzSetPowerMode,
73    FuzzGetIfNamesByChipId,
74    FuzzResetDriver,
75    FuzzStartChannelMeas,
76    FuzzSetProjectionScreenParam,
77    FuzzWifiSendCmdIoctl,
78    FuzzGetFeatureByIfName,
79    FuzzGetStaInfo,
80    FuzzGetChannelMeasResult,
81    FuzzResetToFactoryMacAddress,
82};
83
84static void FuncToOptimal(struct IWlanInterface *interface, uint32_t cmdId, const uint8_t *data)
85{
86    FuzzWlanFuncs fuzzWlanFunc = g_fuzzWlanFuncs[cmdId];
87    if (fuzzWlanFunc != nullptr) {
88        fuzzWlanFunc(interface, data);
89    }
90    return;
91}
92
93bool DoSomethingInterestingWithMyAPI(const uint8_t *rawData, size_t size)
94{
95    struct HdfFeatureInfo ifeature;
96    bool result = false;
97
98    if (rawData == nullptr || size == 0) {
99        return false;
100    }
101    uint32_t cmdId = Convert2Uint32(rawData) % ((sizeof(g_fuzzWlanFuncs) / sizeof(g_fuzzWlanFuncs[0])));
102    g_wlanObj = IWlanInterfaceGetInstance(g_wlanServiceName, false);
103    if (g_wlanObj == nullptr) {
104        HDF_LOGE("%{public}s: g_wlanObj is null", __FUNCTION__);
105        return result;
106    }
107    uint32_t dataSize = size - OFFSET;
108    uint8_t *tmpRawData = reinterpret_cast<uint8_t *>(OsalMemCalloc(dataSize + 1));
109    if (tmpRawData == nullptr) {
110        HDF_LOGE("%{public}s: OsalMemCalloc failed!", __FUNCTION__);
111        return result;
112    }
113    int32_t ret = g_wlanObj->Start(g_wlanObj);
114    if (ret != HDF_SUCCESS) {
115        HDF_LOGE("%{public}s: Start failed! ret=%{public}d", __FUNCTION__, ret);
116        OsalMemFree(tmpRawData);
117        return result;
118    }
119    do {
120        if (PreProcessRawData(rawData, size, tmpRawData, dataSize + 1) != true) {
121            break;
122        }
123        ret = g_wlanObj->CreateFeature(g_wlanObj, wlanType, &ifeature);
124        if (ret != HDF_SUCCESS) {
125            HDF_LOGE("%{public}s: CreateFeature failed! ret=%{public}d", __FUNCTION__, ret);
126            break;
127        }
128        FuncToOptimal(g_wlanObj, cmdId, tmpRawData);
129        ret = g_wlanObj->DestroyFeature(g_wlanObj, &ifeature);
130        if (ret != HDF_SUCCESS) {
131            HDF_LOGE("%{public}s: DestroyFeature failed! ret=%{public}d", __FUNCTION__, ret);
132            break;
133        }
134        result = true;
135    } while (false);
136    ret = g_wlanObj->Stop(g_wlanObj);
137    if (ret != HDF_SUCCESS) {
138        HDF_LOGE("%{public}s: Stop failed! ret=%{public}d", __FUNCTION__, ret);
139        result = false;
140    }
141    IWlanInterfaceReleaseInstance(g_wlanServiceName, g_wlanObj, false);
142    OsalMemFree(tmpRawData);
143    return result;
144}
145} // namespace WIFI
146} // namespace OHOS
147
148/* Fuzzer entry point */
149extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
150{
151    if (size < OHOS::WIFI::THRESHOLD) {
152        return 0;
153    }
154
155    /* Run your code on data */
156    OHOS::WIFI::DoSomethingInterestingWithMyAPI(data, size);
157    return 0;
158}
159