The following piece of code uses only standard libraries, and runs without an error in a 32bit Python 3.6 interpreter, but returns an error in a 64bit one (Windows handle is invalid):
import ctypes, ctypes.wintypes
INVALID_HANDLE_VALUE = -1
DIGCF_PRESENT = 0x00000002
DIGCF_DEVICEINTERFACE = 0x00000010
ERROR_INSUFFICIENT_BUFFER = 122
ERROR_NO_MORE_ITEMS = 259
MAXIMUM_USB_STRING_LENGTH = 255
kernel32 = ctypes.windll.kernel32
setupapi = ctypes.windll.setupapi
SetupDiGetClassDevs = setupapi.SetupDiGetClassDevsW
SetupDiEnumDeviceInterfaces = setupapi.SetupDiEnumDeviceInterfaces
SetupDiGetDeviceInterfaceDetail = setupapi.SetupDiGetDeviceInterfaceDetailW
CM_Get_Parent = setupapi.CM_Get_Parent
CM_Get_Device_ID = setupapi.CM_Get_Device_IDW
CM_Request_Device_Eject = setupapi.CM_Request_Device_EjectW
class GUID(ctypes.Structure):
_fields_ = [("Data1", ctypes.c_ulong),
("Data2", ctypes.c_ushort),
("Data3", ctypes.c_ushort),
("Data4", ctypes.c_ubyte * 8)]
def __str__(self):
return '{%08X-%04X-%04X-%04X-%012X}' % (
self.Data1, self.Data2, self.Data3,
self.Data4[0] * 256 + self.Data4[1],
self.Data4[2] * (256 ** 5) +
self.Data4[3] * (256 ** 4) +
self.Data4[4] * (256 ** 3) +
self.Data4[5] * (256 ** 2) +
self.Data4[6] * 256 +
self.Data4[7])
class SP_DEVINFO_DATA(ctypes.Structure):
_fields_ = [("cbSize", ctypes.wintypes.DWORD),
("ClassGuid", GUID),
("DevInst", ctypes.wintypes.DWORD),
("Reserved", ctypes.c_void_p)
]
class SP_DEVICE_INTERFACE_DATA(ctypes.Structure):
_fields_ = [("cbSize", ctypes.wintypes.DWORD),
("InterfaceClassGuid", GUID),
("Flags", ctypes.wintypes.DWORD),
("Reserved", ctypes.c_void_p)
]
class SP_DEVICE_INTERFACE_DETAIL_DATA(ctypes.Structure):
_fields_ = [("cbSize", ctypes.wintypes.DWORD),
("DevicePath", ctypes.c_wchar*255)]
GUID_DEVINTERFACE_VOLUME = GUID(0x53F5630D, 0xB6BF, 0x11D0,
(ctypes.c_ubyte*8)(0x94, 0xF2, 0x00, 0xA0, 0xC9, 0x1E, 0xFB, 0x8B))
hDevInfo = SetupDiGetClassDevs(ctypes.byref(GUID_DEVINTERFACE_VOLUME),
0,
0,
DIGCF_PRESENT | DIGCF_DEVICEINTERFACE)
if hDevInfo == INVALID_HANDLE_VALUE:
print(ctypes.windll.GetLastError(), ctypes.windll.FormatError())
def get_device_interface(i, device=None):
interfaceData = SP_DEVICE_INTERFACE_DATA()
interfaceData.cbSize = ctypes.sizeof(SP_DEVICE_INTERFACE_DATA)
if SetupDiEnumDeviceInterfaces(
hDevInfo,
device and ctypes.byref(device) or None,
ctypes.byref(GUID_DEVINTERFACE_VOLUME),
i,
ctypes.byref(interfaceData)):
return interfaceData
elif ctypes.GetLastError() == ERROR_NO_MORE_ITEMS:
return
else:
print(ctypes.GetLastError(), ctypes.FormatError())
def connected_devices():
interface_index = 0
interface = get_device_interface(interface_index)
devices = connected_devices()
I suspect that the issue is not strictly a Python problem, but rather a difference in how 64 and 32 bit interpreter types interact with Windows.
Can anyone explain why this is happening?
I have written a little script that needs to be able to enable and disable proxy settings with Python. Right now I edit the registry to achieve this, but it doesn't seem to work on all versions of windows, so I would much rather use InternetSetOption. Information about the API is really scarce and most of the examples are in C, which I don't know:
https://support.microsoft.com/en-us/kb/226473
It would probably look somewhat like this (this snippet is actually for refreshing the browser proxy settings):
import ctypes
INTERNET_OPTION_REFRESH = 37
INTERNET_OPTION_SETTINGS_CHANGED = 39
internet_set_option = ctypes.windll.Wininet.InternetSetOptionW
internet_set_option(0, 38, 0, 0)
internet_set_option(0, INTERNET_OPTION_REFRESH, 0, 0)
internet_set_option(0, INTERNET_OPTION_SETTINGS_CHANGED, 0, 0)
I actually figured this out myself, through lots of trial and errors. Working example:
from ctypes import *
from ctypes.wintypes import *
LPWSTR = POINTER(WCHAR)
HINTERNET = LPVOID
INTERNET_PER_CONN_PROXY_SERVER = 2
INTERNET_OPTION_REFRESH = 37
INTERNET_OPTION_SETTINGS_CHANGED = 39
INTERNET_OPTION_PER_CONNECTION_OPTION = 75
INTERNET_PER_CONN_PROXY_BYPASS = 3
INTERNET_PER_CONN_FLAGS = 1
class INTERNET_PER_CONN_OPTION(Structure):
class Value(Union):
_fields_ = [
('dwValue', DWORD),
('pszValue', LPWSTR),
('ftValue', FILETIME),
]
_fields_ = [
('dwOption', DWORD),
('Value', Value),
]
class INTERNET_PER_CONN_OPTION_LIST(Structure):
_fields_ = [
('dwSize', DWORD),
('pszConnection', LPWSTR),
('dwOptionCount', DWORD),
('dwOptionError', DWORD),
('pOptions', POINTER(INTERNET_PER_CONN_OPTION)),
]
def set_proxy_settings(ip, port, on=True):
if on:
setting = create_unicode_buffer(ip+":"+str(port))
else:
setting = None
InternetSetOption = windll.wininet.InternetSetOptionW
InternetSetOption.argtypes = [HINTERNET, DWORD, LPVOID, DWORD]
InternetSetOption.restype = BOOL
List = INTERNET_PER_CONN_OPTION_LIST()
Option = (INTERNET_PER_CONN_OPTION * 3)()
nSize = c_ulong(sizeof(INTERNET_PER_CONN_OPTION_LIST))
Option[0].dwOption = INTERNET_PER_CONN_FLAGS
Option[0].Value.dwValue = (2 if on else 1) # PROXY_TYPE_DIRECT Or
Option[1].dwOption = INTERNET_PER_CONN_PROXY_SERVER
Option[1].Value.pszValue = setting
Option[2].dwOption = INTERNET_PER_CONN_PROXY_BYPASS
Option[2].Value.pszValue = create_unicode_buffer("localhost;127.*;10.*;172.16.*;172.17.*;172.18.*;172.19.*;172.20.*;172.21.*;172.22.*;172.23.*;172.24.*;172.25.*;172.26.*;172.27.*;172.28.*;172.29.*;172.30.*;172.31.*;172.32.*;192.168.*")
List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST)
List.pszConnection = None
List.dwOptionCount = 3
List.dwOptionError = 0
List.pOptions = Option
InternetSetOption(None, INTERNET_OPTION_PER_CONNECTION_OPTION, byref(List), nSize)
InternetSetOption(None, INTERNET_OPTION_SETTINGS_CHANGED, None, 0)
InternetSetOption(None, INTERNET_OPTION_REFRESH, None, 0)
set_proxy_settings("127.0.0.1", 52042)
How can I retrieve the signal strength of nearby wireless LAN networks on Windows using Python?
I would like to either show or graph the values.
If you are on Windows, you probably want to use the WLAN API, which provides the 'WlanGetAvailableNetworkList()' function (see the API docs for usage). I am not aware of any python wrappers for WLANAPI.DLL so you may have to wrap it yourself using ctypes. I have a preliminary script that does this (works-for-me), but it may be crufty. You'll want to read the documentation to understand the meaning of all the fields:
from ctypes import *
from ctypes.wintypes import *
from sys import exit
def customresize(array, new_size):
return (array._type_*new_size).from_address(addressof(array))
wlanapi = windll.LoadLibrary('wlanapi.dll')
ERROR_SUCCESS = 0
class GUID(Structure):
_fields_ = [
('Data1', c_ulong),
('Data2', c_ushort),
('Data3', c_ushort),
('Data4', c_ubyte*8),
]
WLAN_INTERFACE_STATE = c_uint
(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) = map(WLAN_INTERFACE_STATE, range(0, 8))
class WLAN_INTERFACE_INFO(Structure):
_fields_ = [
("InterfaceGuid", GUID),
("strInterfaceDescription", c_wchar * 256),
("isState", WLAN_INTERFACE_STATE)
]
class WLAN_INTERFACE_INFO_LIST(Structure):
_fields_ = [
("NumberOfItems", DWORD),
("Index", DWORD),
("InterfaceInfo", WLAN_INTERFACE_INFO * 1)
]
WLAN_MAX_PHY_TYPE_NUMBER = 0x8
DOT11_SSID_MAX_LENGTH = 32
WLAN_REASON_CODE = DWORD
DOT11_BSS_TYPE = c_uint
(dot11_BSS_type_infrastructure,
dot11_BSS_type_independent,
dot11_BSS_type_any) = map(DOT11_BSS_TYPE, range(1, 4))
DOT11_PHY_TYPE = c_uint
dot11_phy_type_unknown = 0
dot11_phy_type_any = 0
dot11_phy_type_fhss = 1
dot11_phy_type_dsss = 2
dot11_phy_type_irbaseband = 3
dot11_phy_type_ofdm = 4
dot11_phy_type_hrdsss = 5
dot11_phy_type_erp = 6
dot11_phy_type_ht = 7
dot11_phy_type_IHV_start = 0x80000000
dot11_phy_type_IHV_end = 0xffffffff
DOT11_AUTH_ALGORITHM = c_uint
DOT11_AUTH_ALGO_80211_OPEN = 1
DOT11_AUTH_ALGO_80211_SHARED_KEY = 2
DOT11_AUTH_ALGO_WPA = 3
DOT11_AUTH_ALGO_WPA_PSK = 4
DOT11_AUTH_ALGO_WPA_NONE = 5
DOT11_AUTH_ALGO_RSNA = 6
DOT11_AUTH_ALGO_RSNA_PSK = 7
DOT11_AUTH_ALGO_IHV_START = 0x80000000
DOT11_AUTH_ALGO_IHV_END = 0xffffffff
DOT11_CIPHER_ALGORITHM = c_uint
DOT11_CIPHER_ALGO_NONE = 0x00
DOT11_CIPHER_ALGO_WEP40 = 0x01
DOT11_CIPHER_ALGO_TKIP = 0x02
DOT11_CIPHER_ALGO_CCMP = 0x04
DOT11_CIPHER_ALGO_WEP104 = 0x05
DOT11_CIPHER_ALGO_WPA_USE_GROUP = 0x100
DOT11_CIPHER_ALGO_RSN_USE_GROUP = 0x100
DOT11_CIPHER_ALGO_WEP = 0x101
DOT11_CIPHER_ALGO_IHV_START = 0x80000000
DOT11_CIPHER_ALGO_IHV_END = 0xffffffff
WLAN_AVAILABLE_NETWORK_CONNECTED = 1
WLAN_AVAILABLE_NETWORK_HAS_PROFILE = 2
WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES = 0x00000001
WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES = 0x00000002
class DOT11_SSID(Structure):
_fields_ = [
("SSIDLength", c_ulong),
("SSID", c_char * DOT11_SSID_MAX_LENGTH)
]
class WLAN_AVAILABLE_NETWORK(Structure):
_fields_ = [
("ProfileName", c_wchar * 256),
("dot11Ssid", DOT11_SSID),
("dot11BssType", DOT11_BSS_TYPE),
("NumberOfBssids", c_ulong),
("NetworkConnectable", c_bool),
("wlanNotConnectableReason", WLAN_REASON_CODE),
("NumberOfPhyTypes", c_ulong),
("dot11PhyTypes", DOT11_PHY_TYPE * WLAN_MAX_PHY_TYPE_NUMBER),
("MorePhyTypes", c_bool),
("wlanSignalQuality", c_ulong),
("SecurityEnabled", c_bool),
("dot11DefaultAuthAlgorithm", DOT11_AUTH_ALGORITHM),
("dot11DefaultCipherAlgorithm", DOT11_CIPHER_ALGORITHM),
("Flags", DWORD),
("Reserved", DWORD)
]
class WLAN_AVAILABLE_NETWORK_LIST(Structure):
_fields_ = [
("NumberOfItems", DWORD),
("Index", DWORD),
("Network", WLAN_AVAILABLE_NETWORK * 1)
]
WlanOpenHandle = wlanapi.WlanOpenHandle
WlanOpenHandle.argtypes = (DWORD, c_void_p, POINTER(DWORD), POINTER(HANDLE))
WlanOpenHandle.restype = DWORD
WlanEnumInterfaces = wlanapi.WlanEnumInterfaces
WlanEnumInterfaces.argtypes = (HANDLE, c_void_p,
POINTER(POINTER(WLAN_INTERFACE_INFO_LIST)))
WlanEnumInterfaces.restype = DWORD
WlanGetAvailableNetworkList = wlanapi.WlanGetAvailableNetworkList
WlanGetAvailableNetworkList.argtypes = (HANDLE, POINTER(GUID), DWORD, c_void_p,
POINTER(POINTER(WLAN_AVAILABLE_NETWORK_LIST)))
WlanGetAvailableNetworkList.restype = DWORD
WlanFreeMemory = wlanapi.WlanFreeMemory
WlanFreeMemory.argtypes = [c_void_p]
if __name__ == '__main__':
NegotiatedVersion = DWORD()
ClientHandle = HANDLE()
ret = WlanOpenHandle(1, None, byref(NegotiatedVersion), byref(ClientHandle))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
# find all wireless network interfaces
pInterfaceList = pointer(WLAN_INTERFACE_INFO_LIST())
ret = WlanEnumInterfaces(ClientHandle, None, byref(pInterfaceList))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
try:
ifaces = customresize(pInterfaceList.contents.InterfaceInfo,
pInterfaceList.contents.NumberOfItems)
# find each available network for each interface
for iface in ifaces:
print("Interface: {}".format(iface.strInterfaceDescription))
pAvailableNetworkList = pointer(WLAN_AVAILABLE_NETWORK_LIST())
ret = WlanGetAvailableNetworkList(ClientHandle,
byref(iface.InterfaceGuid),
0,
None,
byref(pAvailableNetworkList))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
try:
avail_net_list = pAvailableNetworkList.contents
networks = customresize(avail_net_list.Network,
avail_net_list.NumberOfItems)
for network in networks:
print("SSID: {}, quality: {:2d}%".format(
network.dot11Ssid.SSID[:network.dot11Ssid.SSIDLength].decode(),
network.wlanSignalQuality))
finally:
WlanFreeMemory(pAvailableNetworkList)
finally:
WlanFreeMemory(pInterfaceList)
On linux, you have a couple of choices:
The standard options is to parse the output of iwlist -scan. However, if you are currently connected to a wlan and not running as root, it only returns the currently connected wlan.
If you need more than this, the best way is to query the wireless manager daemon. On modern, linuxes, this is usually NetworkManager, although wicd is becoming more popular. Both of these managers can be queried using dbus. Unless you can control what the clients have on their systems, you might need to support both of these options, or at least one option and have a fallback for iwlist.
If you don't want to deal with Windows API you could use method shown here with a slight modification.
You can use this command:
netsh wlan show networks mode=Bssid
using this code
import subprocess
results = subprocess.check_output(["netsh", "wlan", "show", "network", "mode=Bssid"])
This will give you additiona "Signal" information as a percentage. This can be converted to RSSI using this method.
So.. I based myself on #fmarks code (which was a live-safer for me), and you should add the WlanScan function, or else the RSSI values will not refresh.
Here is my extended code!
All props to #fmarks!
__author__ = 'Pedro Gomes'
import time
from ctypes import *
from ctypes.wintypes import *
from sys import exit
def customresize(array, new_size):
return (array._type_*new_size).from_address(addressof(array))
wlanapi = windll.LoadLibrary('wlanapi.dll')
ERROR_SUCCESS = 0
class GUID(Structure):
_fields_ = [
('Data1', c_ulong),
('Data2', c_ushort),
('Data3', c_ushort),
('Data4', c_ubyte*8),
]
WLAN_INTERFACE_STATE = c_uint
(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) = map(WLAN_INTERFACE_STATE, xrange(0, 8))
class WLAN_INTERFACE_INFO(Structure):
_fields_ = [
("InterfaceGuid", GUID),
("strInterfaceDescription", c_wchar * 256),
("isState", WLAN_INTERFACE_STATE)
]
class WLAN_INTERFACE_INFO_LIST(Structure):
_fields_ = [
("NumberOfItems", DWORD),
("Index", DWORD),
("InterfaceInfo", WLAN_INTERFACE_INFO * 1)
]
WLAN_MAX_PHY_TYPE_NUMBER = 0x8
DOT11_SSID_MAX_LENGTH = 32
WLAN_REASON_CODE = DWORD
DOT11_BSS_TYPE = c_uint
(dot11_BSS_type_infrastructure,
dot11_BSS_type_independent,
dot11_BSS_type_any) = map(DOT11_BSS_TYPE, xrange(1, 4))
DOT11_PHY_TYPE = c_uint
dot11_phy_type_unknown = 0
dot11_phy_type_any = 0
dot11_phy_type_fhss = 1
dot11_phy_type_dsss = 2
dot11_phy_type_irbaseband = 3
dot11_phy_type_ofdm = 4
dot11_phy_type_hrdsss = 5
dot11_phy_type_erp = 6
dot11_phy_type_ht = 7
dot11_phy_type_IHV_start = 0x80000000
dot11_phy_type_IHV_end = 0xffffffff
DOT11_AUTH_ALGORITHM = c_uint
DOT11_AUTH_ALGO_80211_OPEN = 1
DOT11_AUTH_ALGO_80211_SHARED_KEY = 2
DOT11_AUTH_ALGO_WPA = 3
DOT11_AUTH_ALGO_WPA_PSK = 4
DOT11_AUTH_ALGO_WPA_NONE = 5
DOT11_AUTH_ALGO_RSNA = 6
DOT11_AUTH_ALGO_RSNA_PSK = 7
DOT11_AUTH_ALGO_IHV_START = 0x80000000
DOT11_AUTH_ALGO_IHV_END = 0xffffffff
DOT11_CIPHER_ALGORITHM = c_uint
DOT11_CIPHER_ALGO_NONE = 0x00
DOT11_CIPHER_ALGO_WEP40 = 0x01
DOT11_CIPHER_ALGO_TKIP = 0x02
DOT11_CIPHER_ALGO_CCMP = 0x04
DOT11_CIPHER_ALGO_WEP104 = 0x05
DOT11_CIPHER_ALGO_WPA_USE_GROUP = 0x100
DOT11_CIPHER_ALGO_RSN_USE_GROUP = 0x100
DOT11_CIPHER_ALGO_WEP = 0x101
DOT11_CIPHER_ALGO_IHV_START = 0x80000000
DOT11_CIPHER_ALGO_IHV_END = 0xffffffff
WLAN_AVAILABLE_NETWORK_CONNECTED = 1
WLAN_AVAILABLE_NETWORK_HAS_PROFILE = 2
WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_ADHOC_PROFILES = 0x00000001
WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES = 0x00000002
class DOT11_SSID(Structure):
_fields_ = [
("SSIDLength", c_ulong),
("SSID", c_char * DOT11_SSID_MAX_LENGTH)
]
class WLAN_AVAILABLE_NETWORK(Structure):
_fields_ = [
("ProfileName", c_wchar * 256),
("dot11Ssid", DOT11_SSID),
("dot11BssType", DOT11_BSS_TYPE),
("NumberOfBssids", c_ulong),
("NetworkConnectable", c_bool),
("wlanNotConnectableReason", WLAN_REASON_CODE),
("NumberOfPhyTypes", c_ulong),
("dot11PhyTypes", DOT11_PHY_TYPE * WLAN_MAX_PHY_TYPE_NUMBER),
("MorePhyTypes", c_bool),
("wlanSignalQuality", c_ulong),
("SecurityEnabled", c_bool),
("dot11DefaultAuthAlgorithm", DOT11_AUTH_ALGORITHM),
("dot11DefaultCipherAlgorithm", DOT11_CIPHER_ALGORITHM),
("Flags", DWORD),
("Reserved", DWORD)
]
class WLAN_AVAILABLE_NETWORK_LIST(Structure):
_fields_ = [
("NumberOfItems", DWORD),
("Index", DWORD),
("Network", WLAN_AVAILABLE_NETWORK * 1)
]
DOT11_MAC_ADDRESS = c_ubyte * 6
DOT11_CIPHER_ALGORITHM = c_uint
DOT11_CIPHER_ALGO_NONE = 0x00
DOT11_CIPHER_ALGO_WEP40 = 0x01
DOT11_CIPHER_ALGO_TKIP = 0x02
DOT11_PHY_TYPE = c_uint
DOT11_PHY_TYPE_UNKNOWN = 0
DOT11_PHY_TYPE_ANY = 0
DOT11_PHY_TYPE_FHSS = 1
DOT11_PHY_TYPE_DSSS = 2
DOT11_PHY_TYPE_IRBASEBAND = 3
DOT11_PHY_TYPE_OFDM = 4
DOT11_PHY_TYPE_HRDSSS = 5
DOT11_PHY_TYPE_ERP = 6
DOT11_PHY_TYPE_HT = 7
DOT11_PHY_TYPE_IHV_START = 0X80000000
DOT11_PHY_TYPE_IHV_END = 0XFFFFFFFF
class WLAN_RATE_SET(Structure):
_fields_ = [
("uRateSetLength", c_ulong),
("usRateSet", c_ushort * 126)
]
class WLAN_BSS_ENTRY(Structure):
_fields_ = [
("dot11Ssid",DOT11_SSID),
("uPhyId",c_ulong),
("dot11Bssid", DOT11_MAC_ADDRESS),
("dot11BssType", DOT11_BSS_TYPE),
("dot11BssPhyType", DOT11_PHY_TYPE),
("lRssi", c_long),
("uLinkQuality", c_ulong),
("bInRegDomain", c_bool),
("usBeaconPeriod",c_ushort),
("ullTimestamp", c_ulonglong),
("ullHostTimestamp",c_ulonglong),
("usCapabilityInformation",c_ushort),
("ulChCenterFrequency", c_ulong),
("wlanRateSet",WLAN_RATE_SET),
("ulIeOffset", c_ulong),
("ulIeSize", c_ulong)]
class WLAN_BSS_LIST(Structure):
_fields_ = [
("TotalSize", DWORD),
("NumberOfItems", DWORD),
("NetworkBSS", WLAN_BSS_ENTRY * 1)
]
class WLAN_AVAILABLE_NETWORK_LIST_BSS(Structure):
_fields_ = [
("TotalSize", DWORD),
("NumberOfItems", DWORD),
("Network", WLAN_BSS_ENTRY * 1)
]
WlanOpenHandle = wlanapi.WlanOpenHandle
WlanOpenHandle.argtypes = (DWORD, c_void_p, POINTER(DWORD), POINTER(HANDLE))
WlanOpenHandle.restype = DWORD
WlanCloseHandle = wlanapi.WlanCloseHandle
WlanCloseHandle.argtypes = (HANDLE, c_void_p)
WlanCloseHandle.restype = DWORD
WlanEnumInterfaces = wlanapi.WlanEnumInterfaces
WlanEnumInterfaces.argtypes = (HANDLE, c_void_p,
POINTER(POINTER(WLAN_INTERFACE_INFO_LIST)))
WlanEnumInterfaces.restype = DWORD
WlanGetAvailableNetworkList = wlanapi.WlanGetAvailableNetworkList
WlanGetAvailableNetworkList.argtypes = (HANDLE, POINTER(GUID), DWORD, c_void_p,
POINTER(POINTER(WLAN_AVAILABLE_NETWORK_LIST)))
WlanGetAvailableNetworkList.restype = DWORD
WlanGetNetworkBssList = wlanapi.WlanGetNetworkBssList
WlanGetNetworkBssList.argtypes = (HANDLE, POINTER(GUID),POINTER(GUID),POINTER(GUID), c_bool, c_void_p,
POINTER(POINTER(WLAN_BSS_LIST)))
WlanGetNetworkBssList.restype = DWORD
WlanFreeMemory = wlanapi.WlanFreeMemory
WlanFreeMemory.argtypes = [c_void_p]
WlanScan = wlanapi.WlanScan
WlanScan.argtypes = (HANDLE, POINTER(GUID),c_void_p,c_void_p, c_void_p)
WlanScan.restype = DWORD
def get_interface():
NegotiatedVersion = DWORD()
ClientHandle = HANDLE()
ret = WlanOpenHandle(1, None, byref(NegotiatedVersion), byref(ClientHandle))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
# find all wireless network interfaces
pInterfaceList = pointer(WLAN_INTERFACE_INFO_LIST())
ret = WlanEnumInterfaces(ClientHandle, None, byref(pInterfaceList))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
try:
ifaces = customresize(pInterfaceList.contents.InterfaceInfo,
pInterfaceList.contents.NumberOfItems)
# find each available network for each interface
for iface in ifaces:
#print "Interface: %s" % (iface.strInterfaceDescription)
interface = iface.strInterfaceDescription
finally:
WlanFreeMemory(pInterfaceList)
return interface
class MAC_BSSID_POWER:
"""Classe para os valores retirados"""
def __init__(self, mac, bssid):
self.mac = str(mac)
self.bssid = str(bssid)
self.valores = []
def addPower(self,power):
self.valores.append(int(power))
def getBssid(self):
return self.bssid
def getPowers(self):
return self.valores
def getMac(self):
return self.mac
def get_BSSI():
BSSI_Values={}
NegotiatedVersion = DWORD()
ClientHandle = HANDLE()
ret = WlanOpenHandle(1, None, byref(NegotiatedVersion), byref(ClientHandle))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
# find all wireless network interfaces
pInterfaceList = pointer(WLAN_INTERFACE_INFO_LIST())
ret = WlanEnumInterfaces(ClientHandle, None, byref(pInterfaceList))
if ret != ERROR_SUCCESS:
exit(FormatError(ret))
try:
ifaces = customresize(pInterfaceList.contents.InterfaceInfo,
pInterfaceList.contents.NumberOfItems)
# find each available network for each interface
for iface in ifaces:
# print "Interface: %s" % (iface.strInterfaceDescription)
pAvailableNetworkList2 = pointer(WLAN_BSS_LIST())
ret2 = WlanGetNetworkBssList(ClientHandle,
byref(iface.InterfaceGuid),
None,
None,True,None,
byref(pAvailableNetworkList2))
if ret2 != ERROR_SUCCESS:
exit(FormatError(ret2))
try:
retScan = WlanScan(ClientHandle,byref(iface.InterfaceGuid),None,None,None)
if retScan != ERROR_SUCCESS:
exit(FormatError(retScan))
avail_net_list2 = pAvailableNetworkList2.contents
networks2 = customresize(avail_net_list2.NetworkBSS,
avail_net_list2.NumberOfItems)
for network in networks2:
SSID = str(network.dot11Ssid.SSID[:network.dot11Ssid.SSIDLength])
BSSID = ':'.join('%02x' % b for b in network.dot11Bssid).upper()
signal_strength = str(network.lRssi)
# print "SSID: " + SSID + " BSSID: "+ BSSID+ " SS: "+signal_strength
BSSI_Values[BSSID] = [SSID,signal_strength]
#print "Total "+str(len(networks2))
#print BSSI_Values
finally:
WlanFreeMemory(pAvailableNetworkList2)
WlanCloseHandle(ClientHandle,None)
finally:
WlanFreeMemory(pInterfaceList)
return BSSI_Values
def get_BSSI_times_and_total_seconds(times,seconds):
BSSI_to_return = {}
for i in range(0,seconds*times):
time_to_sleep = float(1.0/times)
time.sleep(time_to_sleep)
got_bssi_temp = get_BSSI()
for bssi in got_bssi_temp:
if not BSSI_to_return.get(bssi):
BSSI_to_return[bssi] = MAC_BSSID_POWER(bssi,got_bssi_temp[bssi][0])
BSSI_to_return[bssi].addPower( got_bssi_temp[bssi][1] )
#BSSI_to_return[bssi] = [got_bssi_temp[bssi][1]]
else:
BSSI_to_return[bssi].addPower( got_bssi_temp[bssi][1] )
#BSSI_to_return[bssi].append(got_bssi_temp[bssi][1])
print "Medicao "+str(i)+" de "+str(seconds*times)
print BSSI_to_return
return BSSI_to_return
if __name__ == '__main__':
#print get_interface()
import time
test = get_BSSI()
for i in range(0,10):
time.sleep(0.5)
oldTest = test
test = get_BSSI()
print "Teste: "+str(i)
if oldTest == test:
print "IGUAL"
else:
print "DIFERENTE"
print test
print "End"
#fmark I just wanted to say THANK YOU so much for this awesome post. At my work I have been trying to get RSSI from the connected AP in Windows, and you deserve many thanks for me finally getting it done. I'm currently listing all APs, but I'm working on modifying it. I wanted to offer a recommendation towards your code. I'm not very experienced with C or the Python CTypes module, but I think I might have found a possible bug. I'm really not sure what difference it makes, but I noticed:
You define enums like this:
DOT11_BSS_TYPE = c_uint
(dot11_BSS_type_infrastructure,
dot11_BSS_type_independent,
dot11_BSS_type_any) = map(DOT11_BSS_TYPE, xrange(1, 4))
But then other times you define something very similar like this:
DOT11_PHY_TYPE = c_uint
dot11_phy_type_unknown = 0
dot11_phy_type_any = 0
dot11_phy_type_fhss = 1
dot11_phy_type_dsss = 2
dot11_phy_type_irbaseband = 3
dot11_phy_type_ofdm = 4
dot11_phy_type_hrdsss = 5
dot11_phy_type_erp = 6
dot11_phy_type_ht = 7
dot11_phy_type_IHV_start = 0x80000000
dot11_phy_type_IHV_end = 0xffffffff
I think the second snippit should be modeled like the first, but I could be wrong. Here was my idea:
DOT11_PHY_TYPE = c_uint
(dot11_phy_type_unknown,
dot11_phy_type_any,
dot11_phy_type_fhss,
dot11_phy_type_dsss,
dot11_phy_type_irbaseband,
dot11_phy_type_ofdm,
dot11_phy_type_hrdsss,
dot11_phy_type_erp,
dot11_phy_type_ht,
dot11_phy_type_IHV_start,
dot11_phy_type_IHV_end) = map(DOT11_PHY_TYPE,
[0,0,1,2,3,4,
5,6,7,0x80000000,
0xffffffff])
This way those values would get correctly mapped to DOT11_PHY_TYPE. Perhaps I am completely wrong, but for future folks like myself, I just wanted whatever is stumbled on here to be correct :)
Thanks again, #fmark.