wpa_supplicant/examples/wpas-dbus-new.py

   1 #!/usr/bin/python
   2
   3 import dbus
   4 import sys, os
   5 import time
   6 import gobject
   7 from dbus.mainloop.glib import DBusGMainLoop
   8
   9 WPAS_DBUS_SERVICE = "fi.w1.wpa_supplicant1"
  10 WPAS_DBUS_INTERFACE = "fi.w1.wpa_supplicant1"
  11 WPAS_DBUS_OPATH = "/fi/w1/wpa_supplicant1"
  12
  13 WPAS_DBUS_INTERFACES_INTERFACE = "fi.w1.wpa_supplicant1.Interface"
  14 WPAS_DBUS_INTERFACES_OPATH = "/fi/w1/wpa_supplicant1/Interfaces"
  15 WPAS_DBUS_BSS_INTERFACE = "fi.w1.wpa_supplicant1.BSS"
  16
  17 def byte_array_to_string(s):
  18         import urllib
  19         r = ""
  20         for c in s:
  21                 if c >= 32 and c < 127:
  22                         r += "%c" % c
  23                 else:
  24                         r += urllib.quote(chr(c))
  25         return r
  26
  27 def list_interfaces(wpas_obj):
  28         ifaces = wpas_obj.Get(WPAS_DBUS_INTERFACE, 'Interfaces',
  29                               dbus_interface=dbus.PROPERTIES_IFACE)
  30         for path in ifaces:
  31                 if_obj = bus.get_object(WPAS_DBUS_SERVICE, path)
  32                 ifname = if_obj.Get(WPAS_DBUS_INTERFACES_INTERFACE, 'Ifname',
  33                               dbus_interface=dbus.PROPERTIES_IFACE)
  34                 print ifname
  35
  36 def propertiesChanged(properties):
  37         if properties.has_key("State"):
  38                 print "PropertiesChanged: State: %s" % (properties["State"])
  39
  40 def showBss(bss):
  41         net_obj = bus.get_object(WPAS_DBUS_SERVICE, bss)
  42         net = dbus.Interface(net_obj, WPAS_DBUS_BSS_INTERFACE)
  43
  44         # Convert the byte-array for SSID and BSSID to printable strings
  45         val = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'BSSID',
  46                           dbus_interface=dbus.PROPERTIES_IFACE)
  47         bssid = ""
  48         for item in val:
  49                 bssid = bssid + ":%02x" % item
  50         bssid = bssid[1:]
  51         val = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'SSID',
  52                           dbus_interface=dbus.PROPERTIES_IFACE)
  53         ssid = byte_array_to_string(val)
  54
  55         val = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'WPA',
  56                           dbus_interface=dbus.PROPERTIES_IFACE)
  57         wpa = "no"
  58         if len(val["KeyMgmt"]) > 0:
  59                 wpa = "yes"
  60         val = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'RSN',
  61                           dbus_interface=dbus.PROPERTIES_IFACE)
  62         wpa2 = "no"
  63         if len(val["KeyMgmt"]) > 0:
  64                 wpa2 = "yes"
  65         freq = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'Frequency',
  66                            dbus_interface=dbus.PROPERTIES_IFACE)
  67         signal = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'Signal',
  68                              dbus_interface=dbus.PROPERTIES_IFACE)
  69         val = net_obj.Get(WPAS_DBUS_BSS_INTERFACE, 'Rates',
  70                           dbus_interface=dbus.PROPERTIES_IFACE)
  71         if len(val) > 0:
  72                 maxrate = val[0] / 1000000
  73         else:
  74                 maxrate = 0
  75
  76         print "  %s  ::  ssid='%s'  wpa=%s  wpa2=%s  signal=%d  rate=%d  freq=%d" % (bssid, ssid, wpa, wpa2, signal, maxrate, freq)
  77
  78 def scanDone(success):
  79         print "Scan done: success=%s" % success
  80
  81         res = if_obj.Get(WPAS_DBUS_INTERFACES_INTERFACE, 'BSSs',
  82                          dbus_interface=dbus.PROPERTIES_IFACE)
  83
  84         print "Scanned wireless networks:"
  85         for opath in res:
  86                 print opath
  87                 showBss(opath)
  88
  89 def bssAdded(bss, properties):
  90         print "BSS added: %s" % (bss)
  91         showBss(bss)
  92
  93 def bssRemoved(bss):
  94         print "BSS removed: %s" % (bss)
  95
  96 def main():
  97         dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
  98         global bus
  99         bus = dbus.SystemBus()
 100         wpas_obj = bus.get_object(WPAS_DBUS_SERVICE, WPAS_DBUS_OPATH)
 101
 102         if len(sys.argv) != 2:
 103                 list_interfaces(wpas_obj)
 104                 os._exit(1)
 105
 106         wpas = dbus.Interface(wpas_obj, WPAS_DBUS_INTERFACE)
 107         bus.add_signal_receiver(scanDone,
 108                                 dbus_interface=WPAS_DBUS_INTERFACES_INTERFACE,
 109                                 signal_name="ScanDone")
 110         bus.add_signal_receiver(bssAdded,
 111                                 dbus_interface=WPAS_DBUS_INTERFACES_INTERFACE,
 112                                 signal_name="BSSAdded")
 113         bus.add_signal_receiver(bssRemoved,
 114                                 dbus_interface=WPAS_DBUS_INTERFACES_INTERFACE,
 115                                 signal_name="BSSRemoved")
 116         bus.add_signal_receiver(propertiesChanged,
 117                                 dbus_interface=WPAS_DBUS_INTERFACES_INTERFACE,
 118                                 signal_name="PropertiesChanged")
 119
 120         ifname = sys.argv[1]
 121
 122         # See if wpa_supplicant already knows about this interface
 123         path = None
 124         try:
 125                 path = wpas.GetInterface(ifname)
 126         except dbus.DBusException as exc:
 127                 if not str(exc).startswith("fi.w1.wpa_supplicant1.InterfaceUnknown:"):
 128                         raise exc
 129                 try:
 130                         path = wpas.CreateInterface({'Ifname': ifname, 'Driver': 'test'})
 131                         time.sleep(1)
 132
 133                 except dbus.DBusException as exc:
 134                         if not str(exc).startswith("fi.w1.wpa_supplicant1.InterfaceExists:"):
 135                                 raise exc
 136
 137         global if_obj
 138         if_obj = bus.get_object(WPAS_DBUS_SERVICE, path)
 139         global iface
 140         iface = dbus.Interface(if_obj, WPAS_DBUS_INTERFACES_INTERFACE)
 141         iface.Scan({'Type': 'active'})
 142
 143         gobject.MainLoop().run()
 144
 145         wpas.RemoveInterface(dbus.ObjectPath(path))
 146
 147 if __name__ == "__main__":
 148         main()
 149