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WPS: Update nfcpy script to support AP mode NFC connection handover

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Initialize NFC connection handover as the server and reply with WPS
carrier record in connection select.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-02-10 17:14:11 +02:00
parent 6772a90ad0
commit 51e985dd84
1 changed files with 43 additions and 28 deletions
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71
hostapd/wps-ap-nfc.py
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@ -66,11 +66,11 @@ def wpas_get_password_token():
return wpas.request("WPS_NFC_TOKEN NDEF").rstrip().decode("hex") return wpas.request("WPS_NFC_TOKEN NDEF").rstrip().decode("hex")
def wpas_get_handover_req(): def wpas_get_handover_sel():
wpas = wpas_connect() wpas = wpas_connect()
if (wpas == None): if (wpas == None):
return None return None
return wpas.request("NFC_GET_HANDOVER_REQ NDEF WPS").rstrip().decode("hex") return wpas.request("NFC_GET_HANDOVER_SEL NDEF WPS-CR").rstrip().decode("hex")
def wpas_put_handover_sel(message): def wpas_put_handover_sel(message):
@ -80,44 +80,59 @@ def wpas_put_handover_sel(message):
print wpas.request("NFC_RX_HANDOVER_SEL " + str(message).encode("hex")) print wpas.request("NFC_RX_HANDOVER_SEL " + str(message).encode("hex"))
def wps_handover_init(peer): class HandoverServer(nfc.handover.HandoverServer):
print "Trying to initiate WPS handover" def __init__(self):
super(HandoverServer, self).__init__()
data = wpas_get_handover_req() def process_request(self, request):
if (data == None): print "HandoverServer - request received"
print "Could not get handover request message from hostapd" print "Parsed handover request: " + request.pretty()
return
print "Handover request from hostapd: " + data.encode("hex") sel = nfc.ndef.HandoverSelectMessage(version="1.2")
message = nfc.ndef.Message(data)
print "Parsed handover request: " + message.pretty() for carrier in request.carriers:
print "Remote carrier type: " + carrier.type
if carrier.type == "application/vnd.wfa.wsc":
print "WPS carrier type match - add WPS carrier record"
data = wpas_get_handover_sel()
if data is None:
print "Could not get handover select carrier record from hostapd"
continue
print "Handover select carrier record from hostapd:"
print data.encode("hex")
message = nfc.ndef.Message(data);
sel.add_carrier(message[0], "active", message[1:])
print "Handover select:"
print sel.pretty()
print str(sel).encode("hex")
print "Sending handover select"
return sel
def wps_handover_resp(peer):
print "Trying to handle WPS handover"
srv = HandoverServer()
nfc.llcp.activate(peer); nfc.llcp.activate(peer);
client = nfc.handover.HandoverClient()
try: try:
print "Trying handover"; print "Trying handover";
client.connect() srv.start()
print "Connected for handover" print "Wait for disconnect"
while nfc.llcp.connected():
time.sleep(0.1)
print "Disconnected after handover"
except nfc.llcp.ConnectRefused: except nfc.llcp.ConnectRefused:
print "Handover connection refused" print "Handover connection refused"
nfc.llcp.shutdown() nfc.llcp.shutdown()
client.close()
return return
print "Sending handover request"
if not client.send(message):
print "Failed to send handover request"
print "Receiving handover response"
message = client._recv()
print "Handover select received"
print message.pretty()
wpas_put_handover_sel(message)
print "Remove peer" print "Remove peer"
nfc.llcp.shutdown() nfc.llcp.shutdown()
client.close()
print "Done with handover" print "Done with handover"
@ -229,7 +244,7 @@ def main():
tag = find_peer(clf) tag = find_peer(clf)
if isinstance(tag, nfc.DEP): if isinstance(tag, nfc.DEP):
wps_handover_init(tag) wps_handover_resp(tag)
continue continue
if tag.ndef: if tag.ndef: