]>
git.ipfire.org Git - thirdparty/hostap.git/blob - hostapd/wps-ap-nfc.py
3 # Example nfcpy to hostapd wrapper for WPS NFC operations
4 # Copyright (c) 2012-2013, Jouni Malinen <j@w1.fi>
6 # This software may be distributed under the terms of the BSD license.
7 # See README for more details.
23 wpas_ctrl
= '/var/run/hostapd'
31 with
open(summary_file
, 'a') as f
:
34 def success_report(txt
):
37 with
open(success_file
, 'a') as f
:
42 if os
.path
.isdir(wpas_ctrl
):
44 ifaces
= [os
.path
.join(wpas_ctrl
, i
) for i
in os
.listdir(wpas_ctrl
)]
45 except OSError as error
:
46 print("Could not find hostapd: ", error
)
50 print("No hostapd control interface found")
55 wpas
= wpaspy
.Ctrl(ctrl
)
57 except Exception as e
:
62 def wpas_tag_read(message
):
66 if "FAIL" in wpas
.request("WPS_NFC_TAG_READ " + str(message
).encode("hex")):
71 def wpas_get_config_token():
75 ret
= wpas
.request("WPS_NFC_CONFIG_TOKEN NDEF")
78 return ret
.rstrip().decode("hex")
81 def wpas_get_password_token():
85 ret
= wpas
.request("WPS_NFC_TOKEN NDEF")
88 return ret
.rstrip().decode("hex")
91 def wpas_get_handover_sel():
95 ret
= wpas
.request("NFC_GET_HANDOVER_SEL NDEF WPS-CR")
98 return ret
.rstrip().decode("hex")
101 def wpas_report_handover(req
, sel
):
102 wpas
= wpas_connect()
105 return wpas
.request("NFC_REPORT_HANDOVER RESP WPS " +
106 str(req
).encode("hex") + " " +
107 str(sel
).encode("hex"))
110 class HandoverServer(nfc
.handover
.HandoverServer
):
111 def __init__(self
, llc
):
112 super(HandoverServer
, self
).__init
__(llc
)
113 self
.ho_server_processing
= False
116 # override to avoid parser error in request/response.pretty() in nfcpy
117 # due to new WSC handover format
118 def _process_request(self
, request
):
119 summary("received handover request {}".format(request
.type))
120 response
= nfc
.ndef
.Message("\xd1\x02\x01Hs\x12")
121 if not request
.type == 'urn:nfc:wkt:Hr':
122 summary("not a handover request")
125 request
= nfc
.ndef
.HandoverRequestMessage(request
)
126 except nfc
.ndef
.DecodeError
as e
:
127 summary("error decoding 'Hr' message: {}".format(e
))
129 response
= self
.process_request(request
)
130 summary("send handover response {}".format(response
.type))
133 def process_request(self
, request
):
134 summary("HandoverServer - request received")
136 print("Parsed handover request: " + request
.pretty())
137 except Exception as e
:
139 print(str(request
).encode("hex"))
141 sel
= nfc
.ndef
.HandoverSelectMessage(version
="1.2")
143 for carrier
in request
.carriers
:
144 print("Remote carrier type: " + carrier
.type)
145 if carrier
.type == "application/vnd.wfa.wsc":
146 summary("WPS carrier type match - add WPS carrier record")
147 data
= wpas_get_handover_sel()
149 summary("Could not get handover select carrier record from hostapd")
151 print("Handover select carrier record from hostapd:")
152 print(data
.encode("hex"))
153 if "OK" in wpas_report_handover(carrier
.record
, data
):
154 success_report("Handover reported successfully")
156 summary("Handover report rejected")
158 message
= nfc
.ndef
.Message(data
);
159 sel
.add_carrier(message
[0], "active", message
[1:])
161 print("Handover select:")
164 except Exception as e
:
166 print(str(sel
).encode("hex"))
168 summary("Sending handover select")
173 def wps_tag_read(tag
):
175 if len(tag
.ndef
.message
):
176 for record
in tag
.ndef
.message
:
177 print("record type " + record
.type)
178 if record
.type == "application/vnd.wfa.wsc":
179 summary("WPS tag - send to hostapd")
180 success
= wpas_tag_read(tag
.ndef
.message
)
186 success_report("Tag read succeeded")
191 def rdwr_connected_write(tag
):
192 summary("Tag found - writing - " + str(tag
))
194 tag
.ndef
.message
= str(write_data
)
195 success_report("Tag write succeeded")
196 print("Done - remove tag")
200 continue_loop
= False
201 global write_wait_remove
202 while write_wait_remove
and tag
.is_present
:
205 def wps_write_config_tag(clf
, wait_remove
=True):
206 summary("Write WPS config token")
207 global write_data
, write_wait_remove
208 write_wait_remove
= wait_remove
209 write_data
= wpas_get_config_token()
210 if write_data
== None:
211 summary("Could not get WPS config token from hostapd")
214 print("Touch an NFC tag")
215 clf
.connect(rdwr
={'on-connect': rdwr_connected_write
})
218 def wps_write_password_tag(clf
, wait_remove
=True):
219 summary("Write WPS password token")
220 global write_data
, write_wait_remove
221 write_wait_remove
= wait_remove
222 write_data
= wpas_get_password_token()
223 if write_data
== None:
224 summary("Could not get WPS password token from hostapd")
227 print("Touch an NFC tag")
228 clf
.connect(rdwr
={'on-connect': rdwr_connected_write
})
231 def rdwr_connected(tag
):
232 global only_one
, no_wait
233 summary("Tag connected: " + str(tag
))
236 print("NDEF tag: " + tag
.type)
238 print(tag
.ndef
.message
.pretty())
239 except Exception as e
:
241 success
= wps_tag_read(tag
)
242 if only_one
and success
:
244 continue_loop
= False
246 summary("Not an NDEF tag - remove tag")
252 def llcp_startup(clf
, llc
):
253 print("Start LLCP server")
255 srv
= HandoverServer(llc
)
258 def llcp_connected(llc
):
259 print("P2P LLCP connected")
260 global wait_connection
261 wait_connection
= False
268 clf
= nfc
.ContactlessFrontend()
270 parser
= argparse
.ArgumentParser(description
='nfcpy to hostapd integration for WPS NFC operations')
271 parser
.add_argument('-d', const
=logging
.DEBUG
, default
=logging
.INFO
,
272 action
='store_const', dest
='loglevel',
273 help='verbose debug output')
274 parser
.add_argument('-q', const
=logging
.WARNING
, action
='store_const',
275 dest
='loglevel', help='be quiet')
276 parser
.add_argument('--only-one', '-1', action
='store_true',
277 help='run only one operation and exit')
278 parser
.add_argument('--no-wait', action
='store_true',
279 help='do not wait for tag to be removed before exiting')
280 parser
.add_argument('--summary',
281 help='summary file for writing status updates')
282 parser
.add_argument('--success',
283 help='success file for writing success update')
284 parser
.add_argument('command', choices
=['write-config',
287 args
= parser
.parse_args()
290 only_one
= args
.only_one
293 no_wait
= args
.no_wait
297 summary_file
= args
.summary
301 success_file
= args
.success
303 logging
.basicConfig(level
=args
.loglevel
)
306 if not clf
.open("usb"):
307 print("Could not open connection with an NFC device")
310 if args
.command
== "write-config":
311 wps_write_config_tag(clf
, wait_remove
=not args
.no_wait
)
314 if args
.command
== "write-password":
315 wps_write_password_tag(clf
, wait_remove
=not args
.no_wait
)
320 print("Waiting for a tag or peer to be touched")
321 wait_connection
= True
323 if not clf
.connect(rdwr
={'on-connect': rdwr_connected
},
324 llcp
={'on-startup': llcp_startup
,
325 'on-connect': llcp_connected
}):
327 except Exception as e
:
328 print("clf.connect failed")
331 if only_one
and srv
and srv
.success
:
334 except KeyboardInterrupt:
341 if __name__
== '__main__':