wince下实现wifi无线网络的连接和配置（WLAN）

2024-07-07 13:36| 来源: 网络整理| 查看: 265

在 Windows CE 下自带有无线网卡的配置和连接程序，但是如果系统剪裁掉了资源管理器和任务栏，或者再CE的很多应用中，是不允许用户回到桌面去调用系统的连接程序的，这篇文章就来谈一下如何用那么可以利用微软自带的WZC函数来重新编写一个独立于系统的WIFI连接程序。

连接WIFI网络有这么几个步骤，第一步，要获取你自己的网卡，调用GetFirstWirelessNetworkCard()来实现。第二步，要获得当前环境中的无线网信息，调用GetWirelessCardInfo来取得这些信息，调用GetWirelseeListSSID来解析这些信息，接下来把取得的无线网SSID和自己输入的密码用AddToPreferredNetworkList()传到WINDOWS的首选无线网列表中，windows就会自动连接这个无线网络。

下面是一整套通过WZC函数连接无线网的程序，我自己测试后保证可以运行，如有需要全部源码或者动态库文件的，请留言或者留下邮箱

调用WZC函数需要包含的文件和库如下:

#include #include #include #include #pragma comment(lib,"Iphlpapi.lib") #pragma comment(lib,"Wzcsapi.lib") #pragma comment(lib,"cclib.lib") 存放SSID的基本信息的数据结构: /*SSID基本信息*/ typedef struct tag_SsidInfo { wstring sSsid; int nRssi; NDIS_802_11_NETWORK_INFRASTRUCTURE InfrastructureMode; ULONG ulPrivacy; NDIS_802_11_AUTHENTICATION_MODE AuthenticationMode; int iKeyIndex; wstring pKey; int iEapType; }SsidInfo;

接下来看关键函数的具体实现：

1.取得无线网卡

BOOL GetFirstWirelessCard(PTCHAR pCard) { WifiCallBack=NULL; if (!pCard) { return FALSE; } INTFS_KEY_TABLE IntfsTable; IntfsTable.dwNumIntfs = 0; IntfsTable.pIntfs = NULL; _tcscpy(pCard, TEXT("")); // 枚举系统中可用的无线网卡 DWORD dwStatus = WZCEnumInterfaces(NULL, &IntfsTable); if (dwStatus != ERROR_SUCCESS) { RETAILMSG(1, (TEXT("WZCEnumInterfaces() error 0x%08X\n"),dwStatus)); return FALSE; } // 判断无线网卡的数量，可以根据无线网卡数量来枚举出所有可用的无线网卡 if (!IntfsTable.dwNumIntfs) { RETAILMSG(1, (TEXT("System has no wireless card.\n"))); return FALSE; } _tcscpy(pCard, IntfsTable.pIntfs[0].wszGuid); LocalFree(IntfsTable.pIntfs); return TRUE; } 2.从无线网卡取得无线网络信息 // // pCard: 无线网卡 GUID // pIntf: 无线网卡配置信息结果体 // pOutFlags: 网卡配置信息掩码标志 // BOOL GetWirelessCardInfo(PTCHAR pCard, PINTF_ENTRY_EX pIntf, PDWORD pOutFlags) { TCHAR *szWiFiCard = NULL; // 参数校验 if (!pCard || !pIntf || !pOutFlags) { //RETAILMSG(1, (TEXT("Param Error.\n"))); return FALSE; } szWiFiCard = pCard; *pOutFlags = 0; // 初始化无线网卡信息 ZeroMemory(pIntf, sizeof(INTF_ENTRY_EX)); // 设置 GUID 号 pIntf->wszGuid = szWiFiCard; // 查询无线网卡信息 DWORD dwStatus = WZCQueryInterfaceEx(NULL, INTF_ALL, pIntf, pOutFlags); if (dwStatus != ERROR_SUCCESS) { //RETAILMSG(1, (TEXT("WZCQueryInterfaceEx() error 0x%08X\n"), dwStatus)); return FALSE; } return TRUE; } 3.解析这些信息，得到需要的无线网参数，ssid，信号强度，加密方式等等

void GetWirelseeListSSID(const PRAW_DATA prdBSSIDList,vector &SsidList) { SsidInfo tempInfo; WCHAR tSsid[MAX_PATH]; if (prdBSSIDList == NULL || prdBSSIDList->dwDataLen == 0) { // RETAILMSG(DBG_MSG, (TEXT(" entry.\n"))); return; } else { PWZC_802_11_CONFIG_LIST pConfigList = (PWZC_802_11_CONFIG_LIST)prdBSSIDList->pData; //RETAILMSG(DBG_MSG, (TEXT("[%d] entries.\n"), pConfigList->NumberOfItems)); int i; // 枚举所有无线AP for (i = 0; i < pConfigList->NumberOfItems; i++) { PWZC_WLAN_CONFIG pConfig = &(pConfigList->Config[i]); RAW_DATA rdBuffer; rdBuffer.dwDataLen = pConfig->Ssid.SsidLength; rdBuffer.pData = pConfig->Ssid.Ssid; // 将 SSID 的 ASCII 码转化成字符串 memset(tSsid,0,sizeof(tSsid)); PrintSSID(&rdBuffer, tSsid); tempInfo.sSsid=wstring(tSsid); tempInfo.nRssi=(int)pConfig->Rssi; tempInfo.InfrastructureMode=pConfig->InfrastructureMode; tempInfo.AuthenticationMode=pConfig->AuthenticationMode; tempInfo.ulPrivacy=pConfig->Privacy; if (WifiCallBack) { WifiCallBack(tempInfo); } SsidList.push_back(tempInfo); } } }取得无线网的SSID名称 void PrintSSID // some RAW_DATA is a SSID, this function is for printing SSID ( PRAW_DATA prdSSID, // RAW SSID data WCHAR* tSsid ) { if (prdSSID == NULL || prdSSID->dwDataLen == 0) wprintf(L""); else { WCHAR szSsid[33]; MultiByteToWideChar(CP_ACP,0,(LPCSTR)prdSSID->pData,-1,tSsid,MAX_PATH*2); } } // PrintSSID() 4.根据上面得到的信息，加上用户输入的密码，生成的信息交给WINDOWS 的首选网络列表 BOOL WirelessConnect(PTCHAR pCard, PTCHAR pSSID,NDIS_802_11_NETWORK_INFRASTRUCTURE infr, ULONG ulPrivacy, NDIS_802_11_AUTHENTICATION_MODE ndisMode, PTCHAR pKey,int iKeyIndex, int iEapType) //pCard: 无线网卡 GUID;pSSID: 无线AP SSID;bAdhoc: 是否点对点的 WIFI 连接;ulPrivacy: 加密模式(WEP/WPA....) ; //ndisMode: 认证模式(Open/Share);iKeyIndex: 密钥索引(1-4);pKey: 密码;iEapType: 802.11 认证模式 { ResetPreferredList(pCard); BOOL bRet = FALSE; if (!pSSID) { return FALSE; } else { WZC_WLAN_CONFIG wzcConfig; ZeroMemory(&wzcConfig, sizeof(WZC_WLAN_CONFIG)); wzcConfig.Length = sizeof(WZC_WLAN_CONFIG); wzcConfig.dwCtlFlags = 0; wzcConfig.Ssid.SsidLength = _tcslen(pSSID); for (UINT i = 0; i < wzcConfig.Ssid.SsidLength; i++) { wzcConfig.Ssid.Ssid[i] = (CHAR)pSSID[i]; } wzcConfig.InfrastructureMode = infr; wzcConfig.AuthenticationMode = ndisMode; wzcConfig.Privacy = ulPrivacy; if (pKey == NULL || _tcslen(pKey) == 0) { // 对密钥进行转换 bRet = InterpretEncryptionKeyValue(wzcConfig, 0, NULL, TRUE); wzcConfig.EapolParams.dwEapType = iEapType; wzcConfig.EapolParams.dwEapType =EAP_TYPE_TLS; wzcConfig.EapolParams.dwEapFlags = EAPOL_ENABLED; wzcConfig.EapolParams.bEnable8021x = TRUE; wzcConfig.EapolParams.dwAuthDataLen = 0; wzcConfig.EapolParams.pbAuthData = 0; } else { // RETAILMSG(DBG_MSG, (TEXT("WirelessConnect iKeyIndex = %d.\n"), iKeyIndex)); bRet = InterpretEncryptionKeyValue(wzcConfig, iKeyIndex, pKey, FALSE); } // 连接到指定的无线AP，并将该AP添加到首先无线AP中 AddToPreferredNetworkList(pCard, wzcConfig, pSSID); } return bRet; } 5.加入WINDOWS的首选网络列表 void AddToPreferredNetworkList // adding to the [Preferred Networks] // [Preferred Networks] is a list of SSIDs in preference order. // WZC continuously scans available SSIDs and attempt to connect to the most preferable SSID. ( IN WCHAR *szWiFiCard, IN WZC_WLAN_CONFIG& wzcConfig1, IN WCHAR *szSsidToConnect ) { DWORD dwOutFlags = 0; INTF_ENTRY_EX Intf; memset(&Intf, 0x00, sizeof(INTF_ENTRY_EX)); Intf.wszGuid = szWiFiCard; DWORD dwStatus = WZCQueryInterfaceEx( NULL, INTF_ALL, &Intf, &dwOutFlags); if(dwStatus) { wprintf(L"WZCQueryInterfaceEx() error dwStatus=0x%0X, dwOutFlags=0x%0X", dwStatus, dwOutFlags); WZCDeleteIntfObjEx(&Intf); return; } WZC_802_11_CONFIG_LIST *pConfigList = (PWZC_802_11_CONFIG_LIST)Intf.rdStSSIDList.pData; if(!pConfigList) // empty [Preferred Networks] list case { DWORD dwDataLen = sizeof(WZC_802_11_CONFIG_LIST); WZC_802_11_CONFIG_LIST *pNewConfigList = (WZC_802_11_CONFIG_LIST *)LocalAlloc(LPTR, dwDataLen); pNewConfigList->NumberOfItems = 1; pNewConfigList->Index = 0; memcpy(pNewConfigList->Config, &wzcConfig1, sizeof(wzcConfig1)); Intf.rdStSSIDList.pData = (BYTE*)pNewConfigList; Intf.rdStSSIDList.dwDataLen = dwDataLen; } else { ULONG uiNumberOfItems = pConfigList->NumberOfItems; for(UINT i=0; iConfig[i].Ssid, sizeof(NDIS_802_11_SSID)) == 0) { wprintf(L"%s is already in the [Preferred Networks] list", szSsidToConnect); WZCDeleteIntfObjEx(&Intf); return; } } wprintf(L"SSID List has [%d] entries.\n", uiNumberOfItems); wprintf(L"adding %s to the top of [Preferred Networks]\n", szSsidToConnect); // this will be the most preferable SSID DWORD dwDataLen = sizeof(WZC_802_11_CONFIG_LIST) + (uiNumberOfItems+1)*sizeof(WZC_WLAN_CONFIG); WZC_802_11_CONFIG_LIST *pNewConfigList = (WZC_802_11_CONFIG_LIST *)LocalAlloc(LPTR, dwDataLen); pNewConfigList->NumberOfItems = uiNumberOfItems + 1; pNewConfigList->Index = 0; memcpy(pNewConfigList->Config, &wzcConfig1, sizeof(wzcConfig1)); if(pConfigList->NumberOfItems) { pNewConfigList->Index = pConfigList->Index; memcpy(pNewConfigList->Config+1, pConfigList->Config, (uiNumberOfItems)*sizeof(WZC_WLAN_CONFIG)); LocalFree(pConfigList); pConfigList = NULL; } Intf.rdStSSIDList.pData = (BYTE*)pNewConfigList; Intf.rdStSSIDList.dwDataLen = dwDataLen; } dwStatus = WZCSetInterfaceEx(NULL, INTF_PREFLIST, &Intf, &dwOutFlags); if(dwStatus) wprintf(L"WZCSetInterfaceEx() error dwStatus=0x%0X, dwOutFlags=0x%0X", dwStatus, dwOutFlags); WZCDeleteIntfObjEx(&Intf); } // AddToPreferredNetworkList() 6.重置WINDOWS的首选网络列表 void ResetPreferredList // reset the [Preferred Networks], so wireless will be disconnected // wzctool -reset cisco1 // reset CISCO1 adapter. // wzctool -reset // reset the first wireless adapter found in the system ( PTCHAR pCard ) { WCHAR *szWiFiCard = NULL; szWiFiCard = pCard; DWORD dwInFlags = 0; INTF_ENTRY_EX Intf; memset(&Intf, 0x00, sizeof(INTF_ENTRY_EX)); Intf.wszGuid = szWiFiCard; DWORD dwStatus = WZCSetInterfaceEx(NULL, INTF_PREFLIST, &Intf, &dwInFlags); if(dwStatus) wprintf(L"WZCSetInterfaceEx() error dwStatus=0x%0X, dwOutFlags=0x%0X", dwStatus, dwInFlags); else wprintf(L"now, WZC resets [Preferred Networks]\n"); } // ResetPreferredList() 7.判断网卡是否连接到了无线网络 BOOL IsWifiConnected(PTCHAR pCard,DWORD * pAdd) { BOOL bHasDefaultRoute = FALSE; ULONG wifiindex =0; if(NO_ERROR == GetAdapterIndex(pCard,&wifiindex)) { DWORD dwTableSize = 0; GetIpAddrTable(NULL, &dwTableSize, FALSE); if (dwTableSize) { MIB_IPADDRTABLE* pft; pft = (MIB_IPADDRTABLE*)malloc(dwTableSize); if (pft) { if (GetIpAddrTable(pft, &dwTableSize, TRUE) == NO_ERROR) { for (ulong nIndex = 0; nIndex < pft->dwNumEntries; nIndex++) { if (pft->table[nIndex].dwIndex == wifiindex) { printf("get wifi index\n"); printf("wifi add=%x\n",pft->table[nIndex].dwAddr); if (0!=pft->table[nIndex].dwAddr) { bHasDefaultRoute = TRUE; if (pAdd) { *pAdd = pft->table[nIndex].dwAddr; } } break; } } } free(pft); } } } return bHasDefaultRoute; } 8.密码加密算法 static void EncryptWepKMaterial(IN OUT WZC_WLAN_CONFIG* pwzcConfig) { BYTE chFakeKeyMaterial[] = { 0x56, 0x09, 0x08, 0x98, 0x4D, 0x08, 0x11, 0x66, 0x42, 0x03, 0x01, 0x67, 0x66 }; for (int i = 0; i < WZCCTL_MAX_WEPK_MATERIAL; i++) pwzcConfig->KeyMaterial[i] ^= chFakeKeyMaterial[(7*i)%13]; } BOOL InterpretEncryptionKeyValue(IN OUT WZC_WLAN_CONFIG& wzcConfig, IN int iKeyIndex, IN PTCHAR pKey, IN BOOL bNeed8021X) { if(wzcConfig.Privacy == Ndis802_11WEPEnabled) { if(!bNeed8021X && pKey) { wzcConfig.KeyIndex = iKeyIndex; wzcConfig.KeyLength = _tcslen(pKey); if((wzcConfig.KeyLength == 5) || (wzcConfig.KeyLength == 13)) { for(UINT i=0; i>= 1; for(UINT i=0; i

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