3 # Example nfcpy to wpa_supplicant wrapper for WPS NFC operations
4 # Copyright (c) 2012, Jouni Malinen <j@w1.fi>
6 # This software may be distributed under the terms of the BSD license.
7 # See README for more details.
20 wpas_ctrl = '/var/run/wpa_supplicant'
24 if os.path.isdir(wpas_ctrl):
26 ifaces = [os.path.join(wpas_ctrl, i) for i in os.listdir(wpas_ctrl)]
27 except OSError, error:
28 print "Could not find wpa_supplicant: ", error
32 print "No wpa_supplicant control interface found"
37 wpas = wpactrl.WPACtrl(ctrl)
39 except wpactrl.error, error:
40 print "Error: ", error
45 def wpas_tag_read(message):
49 print wpas.request("WPS_NFC_TAG_READ " + message.encode("hex"))
52 def wpas_get_handover_req():
56 return wpas.request("NFC_GET_HANDOVER_REQ NDEF WPS").rstrip().decode("hex")
59 def wpas_put_handover_sel(message):
63 print wpas.request("NFC_RX_HANDOVER_SEL " + str(message).encode("hex"))
66 def wps_handover_init(peer):
67 print "Trying to initiate WPS handover"
69 data = wpas_get_handover_req()
71 print "Could not get handover request message from wpa_supplicant"
73 print "Handover request from wpa_supplicant: " + data.encode("hex")
74 message = nfc.ndef.Message(data)
75 print "Parsed handover request: " + message.pretty()
77 nfc.llcp.activate(peer);
80 client = nfc.handover.HandoverClient()
82 print "Trying handover";
84 print "Connected for handover"
85 except nfc.llcp.ConnectRefused:
86 print "Handover connection refused"
91 print "Sending handover request"
93 if not client.send(message):
94 print "Failed to send handover request"
96 print "Receiving handover response"
97 message = client._recv()
98 print "Handover select received"
99 print message.pretty()
100 wpas_put_handover_sel(message)
105 print "Done with handover"
108 def wps_tag_read(tag):
109 if len(tag.ndef.message):
110 message = nfc.ndef.Message(tag.ndef.message)
111 print "message type " + message.type
113 for record in message:
114 print "record type " + record.type
115 if record.type == "application/vnd.wfa.wsc":
116 print "WPS tag - send to wpa_supplicant"
117 wpas_tag_read(tag.ndef.message)
123 while tag.is_present:
128 clf = nfc.ContactlessFrontend()
132 print "Waiting for a tag or peer to be touched"
135 general_bytes = nfc.llcp.startup({})
136 tag = clf.poll(general_bytes)
140 if isinstance(tag, nfc.DEP):
141 wps_handover_init(tag)
149 print "Not an NDEF tag - remove tag"
150 while tag.is_present:
154 except KeyboardInterrupt:
161 if __name__ == '__main__':