import os
import sys
import time
+import argparse
import nfc
import nfc.ndef
import nfc.handover
import logging
-logging.basicConfig()
-import wpactrl
+import wpaspy
wpas_ctrl = '/var/run/hostapd'
+continue_loop = True
+summary_file = None
+success_file = None
+
+def summary(txt):
+ print(txt)
+ if summary_file:
+ with open(summary_file, 'a') as f:
+ f.write(txt + "\n")
+
+def success_report(txt):
+ summary(txt)
+ if success_file:
+ with open(success_file, 'a') as f:
+ f.write(txt + "\n")
def wpas_connect():
ifaces = []
if os.path.isdir(wpas_ctrl):
try:
ifaces = [os.path.join(wpas_ctrl, i) for i in os.listdir(wpas_ctrl)]
- except OSError, error:
- print "Could not find hostapd: ", error
+ except OSError as error:
+ print("Could not find hostapd: ", error)
return None
if len(ifaces) < 1:
- print "No hostapd control interface found"
+ print("No hostapd control interface found")
return None
for ctrl in ifaces:
try:
- wpas = wpactrl.WPACtrl(ctrl)
+ wpas = wpaspy.Ctrl(ctrl)
return wpas
- except wpactrl.error, error:
- print "Error: ", error
+ except Exception as e:
pass
return None
def wpas_tag_read(message):
wpas = wpas_connect()
if (wpas == None):
- return
- print wpas.request("WPS_NFC_TAG_READ " + message.encode("hex"))
+ return False
+ if "FAIL" in wpas.request("WPS_NFC_TAG_READ " + str(message).encode("hex")):
+ return False
+ return True
def wpas_get_config_token():
wpas = wpas_connect()
if (wpas == None):
return None
- return wpas.request("WPS_NFC_CONFIG_TOKEN NDEF").rstrip().decode("hex")
+ ret = wpas.request("WPS_NFC_CONFIG_TOKEN NDEF")
+ if "FAIL" in ret:
+ return None
+ return ret.rstrip().decode("hex")
def wpas_get_password_token():
wpas = wpas_connect()
if (wpas == None):
return None
- return wpas.request("WPS_NFC_TOKEN NDEF").rstrip().decode("hex")
+ ret = wpas.request("WPS_NFC_TOKEN NDEF")
+ if "FAIL" in ret:
+ return None
+ return ret.rstrip().decode("hex")
def wpas_get_handover_sel():
wpas = wpas_connect()
if (wpas == None):
return None
- return wpas.request("NFC_GET_HANDOVER_SEL NDEF WPS-CR").rstrip().decode("hex")
+ ret = wpas.request("NFC_GET_HANDOVER_SEL NDEF WPS-CR")
+ if "FAIL" in ret:
+ return None
+ return ret.rstrip().decode("hex")
-def wpas_put_handover_sel(message):
+def wpas_report_handover(req, sel):
wpas = wpas_connect()
if (wpas == None):
- return
- print wpas.request("NFC_RX_HANDOVER_SEL " + str(message).encode("hex"))
+ return None
+ return wpas.request("NFC_REPORT_HANDOVER RESP WPS " +
+ str(req).encode("hex") + " " +
+ str(sel).encode("hex"))
class HandoverServer(nfc.handover.HandoverServer):
- def __init__(self):
- super(HandoverServer, self).__init__()
+ def __init__(self, llc):
+ super(HandoverServer, self).__init__(llc)
+ self.ho_server_processing = False
+ self.success = False
+
+ # override to avoid parser error in request/response.pretty() in nfcpy
+ # due to new WSC handover format
+ def _process_request(self, request):
+ summary("received handover request {}".format(request.type))
+ response = nfc.ndef.Message("\xd1\x02\x01Hs\x12")
+ if not request.type == 'urn:nfc:wkt:Hr':
+ summary("not a handover request")
+ else:
+ try:
+ request = nfc.ndef.HandoverRequestMessage(request)
+ except nfc.ndef.DecodeError as e:
+ summary("error decoding 'Hr' message: {}".format(e))
+ else:
+ response = self.process_request(request)
+ summary("send handover response {}".format(response.type))
+ return response
def process_request(self, request):
- print "HandoverServer - request received"
- print "Parsed handover request: " + request.pretty()
+ summary("HandoverServer - request received")
+ try:
+ print("Parsed handover request: " + request.pretty())
+ except Exception as e:
+ print(e)
+ print(str(request).encode("hex"))
sel = nfc.ndef.HandoverSelectMessage(version="1.2")
for carrier in request.carriers:
- print "Remote carrier type: " + carrier.type
+ print("Remote carrier type: " + carrier.type)
if carrier.type == "application/vnd.wfa.wsc":
- print "WPS carrier type match - add WPS carrier record"
+ summary("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"
+ summary("Could not get handover select carrier record from hostapd")
continue
- print "Handover select carrier record from hostapd:"
- print data.encode("hex")
+ print("Handover select carrier record from hostapd:")
+ print(data.encode("hex"))
+ if "OK" in wpas_report_handover(carrier.record, data):
+ success_report("Handover reported successfully")
+ else:
+ summary("Handover report rejected")
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("Handover select:")
+ try:
+ print(sel.pretty())
+ except Exception as e:
+ print(e)
+ print(str(sel).encode("hex"))
- print "Sending handover select"
+ summary("Sending handover select")
+ self.success = True
return sel
-def wps_handover_resp(peer):
- print "Trying to handle WPS handover"
-
- srv = HandoverServer()
-
- nfc.llcp.activate(peer);
-
- try:
- print "Trying handover";
- srv.start()
- print "Wait for disconnect"
- while nfc.llcp.connected():
- time.sleep(0.1)
- print "Disconnected after handover"
- except nfc.llcp.ConnectRefused:
- print "Handover connection refused"
- nfc.llcp.shutdown()
- return
-
- print "Remove peer"
- nfc.llcp.shutdown()
- print "Done with handover"
-
-
def wps_tag_read(tag):
+ success = False
if len(tag.ndef.message):
- message = nfc.ndef.Message(tag.ndef.message)
- print "message type " + message.type
-
- for record in message:
- print "record type " + record.type
+ for record in tag.ndef.message:
+ print("record type " + record.type)
if record.type == "application/vnd.wfa.wsc":
- print "WPS tag - send to hostapd"
- wpas_tag_read(tag.ndef.message)
+ summary("WPS tag - send to hostapd")
+ success = wpas_tag_read(tag.ndef.message)
break
else:
- print "Empty tag"
-
- print "Remove tag"
- while tag.is_present:
+ summary("Empty tag")
+
+ if success:
+ success_report("Tag read succeeded")
+
+ return success
+
+
+def rdwr_connected_write(tag):
+ summary("Tag found - writing - " + str(tag))
+ global write_data
+ tag.ndef.message = str(write_data)
+ success_report("Tag write succeeded")
+ print("Done - remove tag")
+ global only_one
+ if only_one:
+ global continue_loop
+ continue_loop = False
+ global write_wait_remove
+ while write_wait_remove and tag.is_present:
time.sleep(0.1)
-
-def wps_write_config_tag(clf):
- print "Write WPS config token"
- data = wpas_get_config_token()
- if (data == None):
- print "Could not get WPS config token from hostapd"
+def wps_write_config_tag(clf, wait_remove=True):
+ summary("Write WPS config token")
+ global write_data, write_wait_remove
+ write_wait_remove = wait_remove
+ write_data = wpas_get_config_token()
+ if write_data == None:
+ summary("Could not get WPS config token from hostapd")
return
- print "Touch an NFC tag"
- while True:
- tag = clf.poll()
- if tag == None:
- time.sleep(0.1)
- continue
- break
-
- print "Tag found - writing"
- tag.ndef.message = data
- print "Done - remove tag"
- while tag.is_present:
- time.sleep(0.1)
+ print("Touch an NFC tag")
+ clf.connect(rdwr={'on-connect': rdwr_connected_write})
-def wps_write_password_tag(clf):
- print "Write WPS password token"
- data = wpas_get_password_token()
- if (data == None):
- print "Could not get WPS password token from hostapd"
+def wps_write_password_tag(clf, wait_remove=True):
+ summary("Write WPS password token")
+ global write_data, write_wait_remove
+ write_wait_remove = wait_remove
+ write_data = wpas_get_password_token()
+ if write_data == None:
+ summary("Could not get WPS password token from hostapd")
return
- print "Touch an NFC tag"
- while True:
- tag = clf.poll()
- if tag == None:
- time.sleep(0.1)
- continue
- break
-
- print "Tag found - writing"
- tag.ndef.message = data
- print "Done - remove tag"
- while tag.is_present:
- time.sleep(0.1)
+ print("Touch an NFC tag")
+ clf.connect(rdwr={'on-connect': rdwr_connected_write})
+
+
+def rdwr_connected(tag):
+ global only_one, no_wait
+ summary("Tag connected: " + str(tag))
+
+ if tag.ndef:
+ print("NDEF tag: " + tag.type)
+ try:
+ print(tag.ndef.message.pretty())
+ except Exception as e:
+ print(e)
+ success = wps_tag_read(tag)
+ if only_one and success:
+ global continue_loop
+ continue_loop = False
+ else:
+ summary("Not an NDEF tag - remove tag")
+ return True
+
+ return not no_wait
+
+def llcp_startup(clf, llc):
+ print("Start LLCP server")
+ global srv
+ srv = HandoverServer(llc)
+ return llc
-def find_peer(clf):
- while True:
- if nfc.llcp.connected():
- print "LLCP connected"
- general_bytes = nfc.llcp.startup({})
- peer = clf.listen(ord(os.urandom(1)) + 200, general_bytes)
- if isinstance(peer, nfc.DEP):
- print "listen -> DEP";
- if peer.general_bytes.startswith("Ffm"):
- print "Found DEP"
- return peer
- print "mismatch in general_bytes"
- print peer.general_bytes
-
- peer = clf.poll(general_bytes)
- if isinstance(peer, nfc.DEP):
- print "poll -> DEP";
- if peer.general_bytes.startswith("Ffm"):
- print "Found DEP"
- return peer
- print "mismatch in general_bytes"
- print peer.general_bytes
-
- if peer:
- print "Found tag"
- return peer
+def llcp_connected(llc):
+ print("P2P LLCP connected")
+ global wait_connection
+ wait_connection = False
+ global srv
+ srv.start()
+ return True
def main():
clf = nfc.ContactlessFrontend()
+ parser = argparse.ArgumentParser(description='nfcpy to hostapd integration for WPS NFC operations')
+ parser.add_argument('-d', const=logging.DEBUG, default=logging.INFO,
+ action='store_const', dest='loglevel',
+ help='verbose debug output')
+ parser.add_argument('-q', const=logging.WARNING, action='store_const',
+ dest='loglevel', help='be quiet')
+ parser.add_argument('--only-one', '-1', action='store_true',
+ help='run only one operation and exit')
+ parser.add_argument('--no-wait', action='store_true',
+ help='do not wait for tag to be removed before exiting')
+ parser.add_argument('--summary',
+ help='summary file for writing status updates')
+ parser.add_argument('--success',
+ help='success file for writing success update')
+ parser.add_argument('command', choices=['write-config',
+ 'write-password'],
+ nargs='?')
+ args = parser.parse_args()
+
+ global only_one
+ only_one = args.only_one
+
+ global no_wait
+ no_wait = args.no_wait
+
+ if args.summary:
+ global summary_file
+ summary_file = args.summary
+
+ if args.success:
+ global success_file
+ success_file = args.success
+
+ logging.basicConfig(level=args.loglevel)
+
try:
- if len(sys.argv) > 1 and sys.argv[1] == "write-config":
- wps_write_config_tag(clf)
+ if not clf.open("usb"):
+ print("Could not open connection with an NFC device")
raise SystemExit
- if len(sys.argv) > 1 and sys.argv[1] == "write-password":
- wps_write_password_tag(clf)
+ if args.command == "write-config":
+ wps_write_config_tag(clf, wait_remove=not args.no_wait)
raise SystemExit
- while True:
- print "Waiting for a tag or peer to be touched"
-
- tag = find_peer(clf)
- if isinstance(tag, nfc.DEP):
- wps_handover_resp(tag)
- continue
-
- if tag.ndef:
- wps_tag_read(tag)
- continue
+ if args.command == "write-password":
+ wps_write_password_tag(clf, wait_remove=not args.no_wait)
+ raise SystemExit
- print "Not an NDEF tag - remove tag"
- while tag.is_present:
- time.sleep(0.1)
+ global continue_loop
+ while continue_loop:
+ print("Waiting for a tag or peer to be touched")
+ wait_connection = True
+ try:
+ if not clf.connect(rdwr={'on-connect': rdwr_connected},
+ llcp={'on-startup': llcp_startup,
+ 'on-connect': llcp_connected}):
+ break
+ except Exception as e:
+ print("clf.connect failed")
+
+ global srv
+ if only_one and srv and srv.success:
+ raise SystemExit
except KeyboardInterrupt:
raise SystemExit
projects / thirdparty / hostap.git / blobdiff