def read_loop(self):
log.debug("READER: start new reading loop...")
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
log.debug("READER: CLF found: " + str(self._clf))
except LookupError:
log.warning("READER: Reader device not found. Exiting")
self.Exit()
return
try:
log.debug("READER: Now start reading")
while not self._exit_reading:
if not self._pause_reading:
tag = self._clf.poll(general_bytes=None)
else:
tag = None
if not tag:
time.sleep(0.5)
continue
if isinstance(tag, nfc.Type3Tag):
log.debug("READER: New tag found: " + str(tag))
last_tag = {'idm': tag.idm, 'pmm': tag.pmm}
if tag.ndef is not None:
log.debug("READER: NDEF is present")
self._last_idm = tag.idm
last_tag['version'] = tag.ndef.version
last_tag['writeable'] = tag.ndef.writeable
last_tag['capacity'] = tag.ndef.capacity
last_tag['size'] = len(tag.ndef.message)
self._message = Message(tag.ndef.message)
log.debug("READER: NDEF Message detected: ")
log.debug("READER: type=%s" % self._message.type)
if last_tag['size']:
log.debug("READER: size: %d" % last_tag['size'])
self.NDEFMessage(tag.ndef.message) # emit
self.TagInfo(pickle.dumps(last_tag))
while tag.is_present:
time.sleep(1)
log.debug("READER: Tag removed")
except IOError:
log.warning("READER: IO Error occured. restarting...")
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()
def WriteNDEF(self, message_string):
log.info("WRITER: Writting...")
self._pause_reading = True
self._message = Message(str(message_string))
log.info("WRITER: Write message with type " + self._message.type)
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
tag = self._clf.poll(general_bytes=None)
if tag:
log.debug("WRITER: found tag with IDm " + tag.idm)
tag.ndef.message = self._message.tostring()
log.debug("WRITER: Writing successfully finished.")
else:
log.info("WRITER: No tag found...")
self._pause_reading = False
return
def read_loop(self):
log.debug("READER: start new reading loop...")
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
log.debug("READER: CLF found: " + str(self._clf))
except LookupError:
log.warning("READER: Reader device not found. Exiting")
self.Exit()
return
try:
log.debug("READER: Now start reading")
while not self._exit_reading:
if not self._pause_reading:
tag = self._clf.poll(general_bytes = None)
else:
tag = None
if not tag:
time.sleep(0.5)
continue
if isinstance(tag, nfc.Type3Tag):
log.debug("READER: New tag found: " + str(tag))
last_tag = {'idm': tag.idm,
'pmm': tag.pmm}
if tag.ndef is not None:
log.debug("READER: NDEF is present")
self._last_idm = tag.idm
last_tag['version'] = tag.ndef.version
last_tag['writeable'] = tag.ndef.writeable
last_tag['capacity'] = tag.ndef.capacity
last_tag['size'] = len(tag.ndef.message)
self._message = Message(tag.ndef.message)
log.debug("READER: NDEF Message detected: ")
log.debug("READER: type=%s"
% self._message.type)
if last_tag['size']:
log.debug("READER: size: %d" % last_tag['size'])
self.NDEFMessage(tag.ndef.message) # emit
self.TagInfo(pickle.dumps(last_tag))
while tag.is_present:
time.sleep(1)
log.debug("READER: Tag removed")
except IOError:
log.warning("READER: IO Error occured. restarting...")
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()
def WriteNDEF(self, message_string):
log.info("WRITER: Writting...")
self._pause_reading = True
self._message = Message(str(message_string))
log.info("WRITER: Write message with type " + self._message.type)
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
tag = self._clf.poll(general_bytes = None)
if tag:
log.debug("WRITER: found tag with IDm " + tag.idm)
tag.ndef.message = self._message.tostring()
log.debug("WRITER: Writing successfully finished.")
else:
log.info("WRITER: No tag found...")
self._pause_reading = False
return
class TagReader(dbus.service.Object):
def __init__(self, bus, mainloop, path="/nfcpy/tagreader"):
log.debug("READER: Create Reader/Writer object...")
self.running = False
dbus.service.Object.__init__(self, conn=bus, object_path=path)
if bus.name_has_owner(BUS_NAME):
# Another instance exists. Inform user and exit.
owner = bus.get_name_owner(BUS_NAME)
log.warning("READER: Another instance is running. You can access "
+ "or exit it via DBus by the name 'org.nfcpy.TagReader'"
+ "or by the unique name " + owner + ".")
return
log.debug("READER: Request Service name")
req_responce = bus.request_name(BUS_NAME,
dbus.bus.NAME_FLAG_DO_NOT_QUEUE)
# debugging:
if req_responce == dbus.bus.REQUEST_NAME_REPLY_EXISTS:
log.debug("READER: reply: exists. %s" % req_responce)
elif req_responce == dbus.bus.REQUEST_NAME_REPLY_PRIMARY_OWNER:
log.debug("READER: reply: primary owner. %s" % req_responce)
self._mainloop = mainloop
self._message = None
self._last_tag = dict()
self._exit_reading = False
self._pause_reading = False
self._last_idm = None
self._clf = None
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()
self.running = True
@property
def running(self):
return self._running
@running.setter
def running(self, value):
self._running = value
@dbus.service.signal(dbus_interface='org.nfcpy.TagReader',
signature='ay') # byte-array, subclass of str
def NDEFMessage(self, new_message_string):
log.debug("READER: Emit message!")
if new_message_string:
return new_message_string
else:
return ""
@dbus.service.signal(dbus_interface='org.nfcpy.TagReader',
signature='ay') # byte-array, subclass of str
def TagInfo(self, tag_str):
log.debug("READER: Emit Tag Info!")
# return new_message_string
@dbus.service.method('org.nfcpy.TagReader', in_signature="",
out_signature="")
def Exit(self):
log.info("READER: exiting...")
self._exit_reading = True
log.debug("READER: release connection to" + str(self.connection))
self.connection.release_name(BUS_NAME)
log.debug("READER: Stop the mainloop")
self._mainloop.quit()
log.debug("READER: End program")
@dbus.service.method('org.nfcpy.TagReader', in_signature="ay",
out_signature="", byte_arrays=True)
def WriteNDEF(self, message_string):
log.info("WRITER: Writting...")
self._pause_reading = True
self._message = Message(str(message_string))
log.info("WRITER: Write message with type " + self._message.type)
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
tag = self._clf.poll(general_bytes = None)
if tag:
log.debug("WRITER: found tag with IDm " + tag.idm)
tag.ndef.message = self._message.tostring()
log.debug("WRITER: Writing successfully finished.")
else:
log.info("WRITER: No tag found...")
self._pause_reading = False
return
@dbus.service.method('org.nfcpy.TagReader', in_signature="",
out_signature="b")
def FormatTag(self):
self._pause_reading = True
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
try:
tag = self._clf.poll(general_bytes = None)
except KeyboardInterrupt:
log.warning("WRITER: Aborted by user. Exit formatting...")
return False
log.info("Tag found: " + str(tag))
if tag:
log.info(str(tag))
if isinstance(tag, nfc.Type3Tag):
tt3_format(tag)
success = True
else:
print "unable to format {0}".format(str(tag))
self._pause_reading = False
success = False
else:
print "No tag"
self._pause_reading = False
return success
def read_loop(self):
log.debug("READER: start new reading loop...")
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
log.debug("READER: CLF found: " + str(self._clf))
except LookupError:
log.warning("READER: Reader device not found. Exiting")
self.Exit()
return
try:
log.debug("READER: Now start reading")
while not self._exit_reading:
if not self._pause_reading:
tag = self._clf.poll(general_bytes = None)
else:
tag = None
if not tag:
time.sleep(0.5)
continue
if isinstance(tag, nfc.Type3Tag):
log.debug("READER: New tag found: " + str(tag))
last_tag = {'idm': tag.idm,
'pmm': tag.pmm}
if tag.ndef is not None:
log.debug("READER: NDEF is present")
self._last_idm = tag.idm
last_tag['version'] = tag.ndef.version
last_tag['writeable'] = tag.ndef.writeable
last_tag['capacity'] = tag.ndef.capacity
last_tag['size'] = len(tag.ndef.message)
self._message = Message(tag.ndef.message)
log.debug("READER: NDEF Message detected: ")
log.debug("READER: type=%s"
% self._message.type)
if last_tag['size']:
log.debug("READER: size: %d" % last_tag['size'])
self.NDEFMessage(tag.ndef.message) # emit
self.TagInfo(pickle.dumps(last_tag))
while tag.is_present:
time.sleep(1)
log.debug("READER: Tag removed")
except IOError:
log.warning("READER: IO Error occured. restarting...")
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()
class TagReader(dbus.service.Object):
def __init__(self, bus, mainloop, path="/nfcpy/tagreader"):
log.debug("READER: Create Reader/Writer object...")
self.running = False
dbus.service.Object.__init__(self, conn=bus, object_path=path)
if bus.name_has_owner(BUS_NAME):
# Another instance exists. Inform user and exit.
owner = bus.get_name_owner(BUS_NAME)
log.warning(
"READER: Another instance is running. You can access " +
"or exit it via DBus by the name 'org.nfcpy.TagReader'" +
"or by the unique name " + owner + ".")
return
log.debug("READER: Request Service name")
req_responce = bus.request_name(BUS_NAME,
dbus.bus.NAME_FLAG_DO_NOT_QUEUE)
# debugging:
if req_responce == dbus.bus.REQUEST_NAME_REPLY_EXISTS:
log.debug("READER: reply: exists. %s" % req_responce)
elif req_responce == dbus.bus.REQUEST_NAME_REPLY_PRIMARY_OWNER:
log.debug("READER: reply: primary owner. %s" % req_responce)
self._mainloop = mainloop
self._message = None
self._last_tag = dict()
self._exit_reading = False
self._pause_reading = False
self._last_idm = None
self._clf = None
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()
self.running = True
@property
def running(self):
return self._running
@running.setter
def running(self, value):
self._running = value
@dbus.service.signal(dbus_interface='org.nfcpy.TagReader',
signature='ay') # byte-array, subclass of str
def NDEFMessage(self, new_message_string):
log.debug("READER: Emit message!")
if new_message_string:
return new_message_string
else:
return ""
@dbus.service.signal(dbus_interface='org.nfcpy.TagReader',
signature='ay') # byte-array, subclass of str
def TagInfo(self, tag_str):
log.debug("READER: Emit Tag Info!")
# return new_message_string
@dbus.service.method('org.nfcpy.TagReader',
in_signature="",
out_signature="")
def Exit(self):
log.info("READER: exiting...")
self._exit_reading = True
log.debug("READER: release connection to" + str(self.connection))
self.connection.release_name(BUS_NAME)
log.debug("READER: Stop the mainloop")
self._mainloop.quit()
log.debug("READER: End program")
@dbus.service.method('org.nfcpy.TagReader',
in_signature="ay",
out_signature="",
byte_arrays=True)
def WriteNDEF(self, message_string):
log.info("WRITER: Writting...")
self._pause_reading = True
self._message = Message(str(message_string))
log.info("WRITER: Write message with type " + self._message.type)
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
tag = self._clf.poll(general_bytes=None)
if tag:
log.debug("WRITER: found tag with IDm " + tag.idm)
tag.ndef.message = self._message.tostring()
log.debug("WRITER: Writing successfully finished.")
else:
log.info("WRITER: No tag found...")
self._pause_reading = False
return
@dbus.service.method('org.nfcpy.TagReader',
in_signature="",
out_signature="b")
def FormatTag(self):
self._pause_reading = True
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
except LookupError:
log.warning("WRITER: Reader/Writer not found. Exiting")
self.Exit()
tag = None
while not tag:
try:
tag = self._clf.poll(general_bytes=None)
except KeyboardInterrupt:
log.warning("WRITER: Aborted by user. Exit formatting...")
return False
log.info("Tag found: " + str(tag))
if tag:
log.info(str(tag))
if isinstance(tag, nfc.Type3Tag):
tt3_format(tag)
success = True
else:
print "unable to format {0}".format(str(tag))
self._pause_reading = False
success = False
else:
print "No tag"
self._pause_reading = False
return success
def read_loop(self):
log.debug("READER: start new reading loop...")
if not self._clf:
try:
self._clf = nfc.ContactlessFrontend(probe=nfc.dev.__all__)
log.debug("READER: CLF found: " + str(self._clf))
except LookupError:
log.warning("READER: Reader device not found. Exiting")
self.Exit()
return
try:
log.debug("READER: Now start reading")
while not self._exit_reading:
if not self._pause_reading:
tag = self._clf.poll(general_bytes=None)
else:
tag = None
if not tag:
time.sleep(0.5)
continue
if isinstance(tag, nfc.Type3Tag):
log.debug("READER: New tag found: " + str(tag))
last_tag = {'idm': tag.idm, 'pmm': tag.pmm}
if tag.ndef is not None:
log.debug("READER: NDEF is present")
self._last_idm = tag.idm
last_tag['version'] = tag.ndef.version
last_tag['writeable'] = tag.ndef.writeable
last_tag['capacity'] = tag.ndef.capacity
last_tag['size'] = len(tag.ndef.message)
self._message = Message(tag.ndef.message)
log.debug("READER: NDEF Message detected: ")
log.debug("READER: type=%s" % self._message.type)
if last_tag['size']:
log.debug("READER: size: %d" % last_tag['size'])
self.NDEFMessage(tag.ndef.message) # emit
self.TagInfo(pickle.dumps(last_tag))
while tag.is_present:
time.sleep(1)
log.debug("READER: Tag removed")
except IOError:
log.warning("READER: IO Error occured. restarting...")
read_thread = Thread(target=self.read_loop, name="ReadThread")
read_thread.start()