Comment puis-je forcer Windows à effectuer une nouvelle analyse des réseaux sans fil disponibles à partir de la ligne de commande?
(c’est-à-dire que je recherche l’équivalent en ligne de commande de la pression de F5 sur l’interface graphique.)
J'ai écrit un petit programme (~ 2 Ko) WlanScan.exe
pour le faire.
Voici le base64 (version 32 bits):
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Voici le code source:
#include <tchar.h>
#include <Windows.h>
#ifndef __CRT_STRINGIZE
#define __CRT_STRINGIZE(Value) #Value
#endif
#ifndef _CRT_STRINGIZE
#define _CRT_STRINGIZE(Value) __CRT_STRINGIZE(Value)
#endif
enum { WLAN_NOTIFICATION_SOURCE_ACM = 0x00000008 };
typedef enum _WLAN_NOTIFICATION_ACM { wlan_notification_acm_start, wlan_notification_acm_autoconf_enabled, wlan_notification_acm_autoconf_disabled, wlan_notification_acm_background_scan_enabled, wlan_notification_acm_background_scan_disabled, wlan_notification_acm_bss_type_change, wlan_notification_acm_power_setting_change, wlan_notification_acm_scan_complete, wlan_notification_acm_scan_fail, wlan_notification_acm_connection_start, wlan_notification_acm_connection_complete, wlan_notification_acm_connection_attempt_fail, wlan_notification_acm_filter_list_change, wlan_notification_acm_interface_arrival, wlan_notification_acm_interface_removal, wlan_notification_acm_profile_change, wlan_notification_acm_profile_name_change, wlan_notification_acm_profiles_exhausted, wlan_notification_acm_network_not_available, wlan_notification_acm_network_available, wlan_notification_acm_disconnecting, wlan_notification_acm_disconnected, wlan_notification_acm_adhoc_network_state_change, wlan_notification_acm_profile_unblocked, wlan_notification_acm_screen_power_change, wlan_notification_acm_profile_blocked, wlan_notification_acm_scan_list_refresh, wlan_notification_acm_end } WLAN_NOTIFICATION_ACM, *PWLAN_NOTIFICATION_ACM;
typedef enum _WLAN_INTERFACE_STATE { wlan_interface_state_not_ready, wlan_interface_state_connected, wlan_interface_state_ad_hoc_network_formed, wlan_interface_state_disconnecting, wlan_interface_state_disconnected, wlan_interface_state_associating, wlan_interface_state_discovering, wlan_interface_state_authenticating } WLAN_INTERFACE_STATE, *PWLAN_INTERFACE_STATE;
typedef struct _WLAN_INTERFACE_INFO { GUID InterfaceGuid; WCHAR strInterfaceDescription[256]; WLAN_INTERFACE_STATE isState; } WLAN_INTERFACE_INFO;
typedef struct _WLAN_INTERFACE_INFO_LIST { DWORD dwNumberOfItems; DWORD dwIndex; WLAN_INTERFACE_INFO InterfaceInfo[1]; } WLAN_INTERFACE_INFO_LIST;
typedef struct _WLAN_NOTIFICATION_DATA { DWORD NotificationSource; DWORD NotificationCode; GUID InterfaceGuid; DWORD dwDataSize; void *pData; } WLAN_NOTIFICATION_DATA, *PWLAN_NOTIFICATION_DATA;
typedef void WINAPI WLAN_NOTIFICATION_CALLBACK(WLAN_NOTIFICATION_DATA *, void *);
typedef struct wlan_scan_finished_context { WLAN_INTERFACE_INFO_LIST *interface_list; HANDLE semaphore; } wlan_scan_finished_context;
static void WINAPI wlan_notification_callback(WLAN_NOTIFICATION_DATA *data, void *context)
{
if ((data->NotificationSource | WLAN_NOTIFICATION_SOURCE_ACM) == WLAN_NOTIFICATION_SOURCE_ACM)
{
if (data->NotificationCode == wlan_notification_acm_power_setting_change || data->NotificationCode == wlan_notification_acm_scan_complete)
{
wlan_scan_finished_context *const ctx = (wlan_scan_finished_context *)context;
if (ctx)
{
for (unsigned int i = 0; i != (ctx->interface_list ? ctx->interface_list->dwNumberOfItems : 0); ++i)
{
if (memcmp(&ctx->interface_list->InterfaceInfo[i].InterfaceGuid, &data->InterfaceGuid, sizeof(data->InterfaceGuid)) == 0)
{
ctx->interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(ctx->interface_list->InterfaceInfo[i].isState | (data->NotificationCode << 16));
}
}
if (ctx->semaphore) { long prev; ReleaseSemaphore(ctx->semaphore, 1, &prev); }
}
}
}
}
int _tmain(int argc, TCHAR *argv[])
{
(void)argv;
unsigned int result;
if (argc > 1) { result = ERROR_INVALID_PARAMETER; }
else
{
HMODULE const wlanapi = LoadLibrary(TEXT("wlanapi.dll"));
if (wlanapi)
{
#define X(Module, Return, Name, Params) typedef Return Name##_t Params; Name##_t *Name = (Name##_t *)GetProcAddress(Module, __CRT_STRINGIZE(Name));
X(wlanapi, DWORD WINAPI, WlanCloseHandle, (HANDLE hClientHandle, void *pReserved));
X(wlanapi, DWORD WINAPI, WlanEnumInterfaces, (HANDLE hClientHandle, void *pReserved, struct _WLAN_INTERFACE_INFO_LIST **ppInterfaceList));
X(wlanapi, void WINAPI, WlanFreeMemory, (void *pMemory));
X(wlanapi, DWORD WINAPI, WlanOpenHandle, (DWORD dwClientVersion, void *pReserved, DWORD *pdwNegotiatedVersion, HANDLE *phClientHandle));
X(wlanapi, DWORD WINAPI, WlanRegisterNotification, (HANDLE hClientHandle, DWORD dwNotifSource, BOOL bIgnoreDuplicate, WLAN_NOTIFICATION_CALLBACK funcCallback, void *pCallbackContext, void *pReserved, DWORD *pdwPrevNotifSource));
X(wlanapi, DWORD WINAPI, WlanScan, (HANDLE hClientHandle, const GUID *pInterfaceGuid, const struct _DOT11_SSID *pDot11Ssid, const struct _WLAN_RAW_DATA *pIeData, void *pReserved));
#undef X
DWORD version;
HANDLE handle = NULL;
result = WlanOpenHandle ? WlanOpenHandle(1, NULL, &version, &handle) : ERROR_PROC_NOT_FOUND;
if (result == ERROR_SUCCESS)
{
WLAN_INTERFACE_INFO_LIST *interface_list = NULL;
result = WlanEnumInterfaces ? WlanEnumInterfaces(handle, NULL, &interface_list) : ERROR_PROC_NOT_FOUND;
if (result == ERROR_SUCCESS)
{
wlan_scan_finished_context context = { interface_list, CreateSemaphore(NULL, 0, (LONG)interface_list->dwNumberOfItems, NULL) };
DWORD prev;
unsigned int nwait = 0;
unsigned long const register_notification_result = WlanRegisterNotification ? WlanRegisterNotification(handle, WLAN_NOTIFICATION_SOURCE_ACM, FALSE, wlan_notification_callback, &context, NULL, &prev) : ERROR_PROC_NOT_FOUND;
for (unsigned int i = 0; i != interface_list->dwNumberOfItems; ++i)
{
unsigned int const result_i = WlanScan ? WlanScan(handle, &interface_list->InterfaceInfo[i].InterfaceGuid, NULL, NULL, NULL) : ERROR_PROC_NOT_FOUND;
interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(interface_list->InterfaceInfo[i].isState & 0xFFFF);
if (result_i == ERROR_SUCCESS) { ++nwait; }
else { interface_list->InterfaceInfo[i].isState = (WLAN_INTERFACE_STATE)(interface_list->InterfaceInfo[i].isState | (result_i << 16)); }
}
while (nwait > 0)
{
WaitForSingleObject(context.semaphore, INFINITE);
--nwait;
}
for (unsigned int i = 0; i != interface_list->dwNumberOfItems; ++i)
{
unsigned int const result_i = interface_list->InterfaceInfo[i].isState >> 16;
if (register_notification_result == ERROR_SUCCESS && result_i != ERROR_SUCCESS)
{ result = result_i; }
}
if (result == ERROR_SUCCESS && register_notification_result != ERROR_SUCCESS) { result = ERROR_IO_PENDING; }
if (context.semaphore) { CloseHandle(context.semaphore); }
WlanFreeMemory ? WlanFreeMemory(interface_list) : ERROR_PROC_NOT_FOUND;
}
WlanCloseHandle ? WlanCloseHandle(handle, NULL) : ERROR_PROC_NOT_FOUND;
}
}
else { result = (unsigned int)GetLastError(); }
}
return (int)result;
}
Je cherche la même chose depuis un moment maintenant, malheureusement, je ne trouve rien qui puisse le faire dans l’utilitaire netsh. La meilleure solution que j'ai pu trouver était de désactiver puis de réactiver l'interface via les commandes netsh. Il y a un petit délai (1-2 secondes) après l'activation de l'interface où aucune liste de réseaux n'est répertoriée, mais cela ne devrait pas être trop difficile à éviter.
J'utilise les commandes suivantes:
netsh interface set interface name="<NIC name>" admin=disabled
netsh interface set interface name="<NIC name>" admin=enabled
netsh wlan show networks
Edit: Comment obtenir alors le
"<NIC name>"
, c’est-à-dire le nom de la carte d’interface réseau.
Tout d'abord utilisez la commande netsh wlan show networks
Si le wlan est activé, vous recevrez un message comme celui-ci
C:\Users\user1>netsh wlan show networks
Interface name : WiFi
There are 2 networks currently visible.
SSID 1 : Cross
Network type : Infrastructure
Authentication : WPA2-Personal
Encryption : CCMP
SSID 2 : WLAN-0A8E41
Network type : Infrastructure
Authentication : WPA2-Personal
Encryption : CCMP
Ainsi, dans ce cas, le nom de l'interface est WiFi
. Vous pouvez maintenant procéder comme expliqué ci-dessus, par exemple pour désactiver la carte wlan:
netsh interface set interface name="WiFi" admin=disabled
Etc. :)
Les réseaux ne sont mis à jour que lorsqu'un scan est effectué avec votre carte WiFi . La commande NETSH
ne demande pas d'analyse; il affiche uniquement les résultats mis en cache de la dernière analyse.
L'ouverture de la liste de réseaux Windows à partir de la barre des tâches met à jour les résultats, car l'outil réseau de la barre des tâches demande une analyse à son ouverture.
Il n'y a pas de commande
NETSH
pour demander une analyse comme celle-ci. Vous devez écrire du code en utilisant soit la fonction Win32 WlanScan (des enveloppes C # existent si vous préférez cela), ou la fonction WinRT ScanAsync.
(Adapté/mis à jour à partir de la source .)
WiFiAdapter
Classe WlanScan
En étendant cette réponse , voici un script batch pour automatiser:
@ECHO OFF
for /f "tokens=*" %%a in ('netsh wlan show networks ^| grep -oP "Interface\s+name\s*:\s*\K(.*)"') do set "interface_name=%%a"
netsh interface set interface name=%interface_name% admin=disabled
netsh interface set interface name=%interface_name% admin=enabled
netsh wlan show networks
assurez-vous de l'exécuter en tant qu'administrateur .