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+#!/usr/bin/python
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+#
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+# Example nfcpy to wpa_supplicant wrapper for WPS NFC operations
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+# Copyright (c) 2012, Jouni Malinen <j@w1.fi>
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+#
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+# This software may be distributed under the terms of the BSD license.
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+# See README for more details.
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+
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+import os
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+import sys
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+import time
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+
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+import nfc
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+import nfc.ndef
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+
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+import wpactrl
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+
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+wpas_ctrl = '/var/run/wpa_supplicant'
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+
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+def wpas_tag_read(message):
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+ ifaces = []
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+ if os.path.isdir(wpas_ctrl):
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+ try:
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+ ifaces = [os.path.join(wpas_ctrl, i) for i in os.listdir(wpas_ctrl)]
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+ except OSError, error:
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+ print "Could not find wpa_supplicant: ", error
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+ return
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+
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+ if len(ifaces) < 1:
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+ print "No wpa_supplicant control interface found"
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+ return
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+
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+ for ctrl in ifaces:
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+ try:
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+ wpas = wpactrl.WPACtrl(ctrl)
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+ print wpas.request("WPS_NFC_TAG_READ " + message.encode("hex"))
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+ except wpactrl.error, error:
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+ print "Error: ", error
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+ pass
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+
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+def main():
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+ clf = nfc.ContactlessFrontend()
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+
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+ try:
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+ while True:
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+ print "Waiting for a tag to be touched"
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+
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+ while True:
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+ tag = clf.poll()
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+ if tag and tag.ndef:
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+ break
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+ if tag:
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+ print "Not an NDEF tag"
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+ while tag.is_present:
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+ time.sleep(0.2)
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+
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+ if len(tag.ndef.message):
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+ message = nfc.ndef.Message(tag.ndef.message)
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+ print "message type " + message.type
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+
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+ for record in message:
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+ print "record type " + record.type
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+ if record.type == "application/vnd.wfa.wsc":
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+ print "WPS tag - send to wpa_supplicant"
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+ wpas_tag_read(tag.ndef.message)
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+ break
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+ else:
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+ print "Empty tag"
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+
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+ print "Remove tag"
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+ while tag.is_present:
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+ time.sleep(0.2)
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+
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+ print "Ok"
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+
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+ except KeyboardInterrupt:
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+ raise SystemExit
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+ finally:
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+ clf.close()
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+
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+ raise SystemExit
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+
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+if __name__ == '__main__':
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+ main()
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