def __init__(self, input_ = None):
'''
@param input_: Cadena de 1 y 0's (opcional espacioes), cadena
de caracteres tal cual vienen del socket, entero (32bits) o lista
de enteros.
'''
if not input_:
self.__bf = bitfield(0)
elif type(input_) == str:
# Es una cadena binara?
if all(map(lambda c: c in '01 ', input_)):
input_ = input_.replace(' ', '')
i = int(input_, 2)
self.__bf = bitfield(i)
# cadena normal, tal cual sacada del socket
else:
self.__bf = bitfield([ ord(c) for c in input_])
elif type(input_) == int or type(input_) is long:
self.__bf = bitfield(input_)
elif type(input_) == list and all(map(lambda i: type(i) is int, input_)):
self.__bf = bitfield(input_)
else:
raise ValueError('No se puede crear DTime a partir de %s' % input_)
def __init__(self, input_=None):
'''
@param input_: Cadena de 1 y 0's (opcional espacioes), cadena
de caracteres tal cual vienen del socket, entero (32bits) o lista
de enteros.
'''
if not input_:
self.__bf = bitfield(0)
elif type(input_) == str:
# Es una cadena binara?
if all(map(lambda c: c in '01 ', input_)):
input_ = input_.replace(' ', '')
i = int(input_, 2)
self.__bf = bitfield(i)
# cadena normal, tal cual sacada del socket
else:
self.__bf = bitfield([ord(c) for c in input_])
elif type(input_) == int or type(input_) is long:
self.__bf = bitfield(input_)
elif type(input_) == list and all(map(lambda i: type(i) is int,
input_)):
self.__bf = bitfield(input_)
else:
raise ValueError('No se puede crear DTime a partir de %s' % input_)
def crear_control(cls, origen, destino, secuencia, puerto = None,
bit = None, estado = None, es_comando_indirecto = False):
'''
Si comando es 1, entocnes es una indirección. El tercer byte no
se tiene en cuenta.
'''
p = cls()
p['SOF'] = SOF
p['QTY'] = 10 # Este ya lo sabemos
p['DST'] = destino
p['SRC'] = origen
p['SEQ'] = secuencia
p['COM'] = COMANDOS['CONTROL']
byte_0, byte_1 = bitfield(0), bitfield(0)
# Es comando
byte_0[7] = es_comando_indirecto and 1 or 0
# 2 ^ 6 = 64 puertos
byte_0[0:6] = puerto
# Setear el bit a 1 o a 0
byte_1[3] = estado
if not es_comando_indirecto:
# el nible superior no se utiliza
byte_1[0:3] = bit
p['A00'] = int(byte_0)
p['A01'] = int(byte_1)
p['BCH'], p['BCL'] = cls.generar_checksum(p)
return p
def _parse_packet(self, packet_bytes):
'''
Parse a raw udp packet and return a list of parsed messages.
'''
byte_buffer = ByteBuffer(packet_bytes)
parsed_messages = []
while not byte_buffer.is_empty():
message_id, sequence_number, message_flags = \
byte_buffer.read_struct(self.MESSAGE_TRANSPORT_HEADER)
message_type_id = messages.BaseMessage.read_header_from_byte_buffer(
byte_buffer)[0]
message = self.message_factory.get_by_id(message_type_id)()
message.read_from_byte_buffer(byte_buffer)
# - These flags are for consumption by .update()
message_flags_bf = bitfield(message_flags)
message.is_reliable = message_flags_bf[1]
message.is_ordered = message_flags_bf[0]
message.sequence_number = sequence_number
message.message_id = message_id
parsed_messages.append(message)
return parsed_messages
def _pack_tuc(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
byte = bitfield(0)
byte[6:8] = args['tipo']
byte[0:6] = args['uc']
part_list.append(int(byte))
def _pack_tuc(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
byte = bitfield(0)
byte[6:8] = args['tipo']
byte[0:6] = args['uc']
part_list.append(int(byte))
def _pack_pbe(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
byte = bitfield(0)
byte[0] = args['status']
byte[1:4] = args['bit']
byte[4:8] = args['port']
part_list.append(int(byte))
def _pack_pbe(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
byte = bitfield(0)
byte[0] = args['status']
byte[1:4] = args['bit']
byte[4:8] = args['port']
part_list.append(int(byte))
def _parse_bytes(self):
'''
Parsea la entrada basandose en self.cadena.
Este método debe ser sobrecargado en las subclases en el caso
de cambiar la decodificación de evento.
'''
# Primera parte
bf = bitfield(self.cadena[0])
self.tipo, self.uc = bf[6:8], bf[0:6]
# Segunda parte
bf = bitfield(self.cadena[1])
self.port, self.bit, self.event = bf[4:8], bf[1:4], bf[0:1]
bf = bitfield(self.cadena[2:6])
# Cuatro bytes de fecha
self.y, self.d, self.h, self.s = bf[26:32], bf[17:26], bf[12:17], bf[0:12]
self.cseg, self.dseg = self.cadena[6:8]
self.microsceconds = self.dseg * 10000 + self.cseg * 100
def _parse_bytes(self):
'''
Parsea la entrada basandose en self.cadena.
Este método debe ser sobrecargado en las subclases en el caso
de cambiar la decodificación de evento.
'''
# Primera parte
bf = bitfield(self.cadena[0])
self.tipo, self.uc = bf[6:8], bf[0:6]
# Segunda parte
bf = bitfield(self.cadena[1])
self.port, self.bit, self.event = bf[4:8], bf[1:4], bf[0:1]
bf = bitfield(self.cadena[2:6])
# Cuatro bytes de fecha
self.y, self.d, self.h, self.s = bf[26:32], bf[17:26], bf[12:17], bf[
0:12]
self.cseg, self.dseg = self.cadena[6:8]
self.microsceconds = self.dseg * 10000 + self.cseg * 100
def crear_control(cls,
origen,
destino,
secuencia,
puerto=None,
bit=None,
estado=None,
es_comando_indirecto=False):
'''
Si comando es 1, entocnes es una indirección. El tercer byte no
se tiene en cuenta.
'''
p = cls()
p['SOF'] = SOF
p['QTY'] = 10 # Este ya lo sabemos
p['DST'] = destino
p['SRC'] = origen
p['SEQ'] = secuencia
p['COM'] = COMANDOS['CONTROL']
byte_0, byte_1 = bitfield(0), bitfield(0)
# Es comando
byte_0[7] = es_comando_indirecto and 1 or 0
# 2 ^ 6 = 64 puertos
byte_0[0:6] = puerto
# Setear el bit a 1 o a 0
byte_1[3] = estado
if not es_comando_indirecto:
# el nible superior no se utiliza
byte_1[0:3] = bit
p['A00'] = int(byte_0)
p['A01'] = int(byte_1)
p['BCH'], p['BCL'] = cls.generar_checksum(p)
return p
def _pack_date(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
# Creamos un bitfield para la fecha, este va a ser de 32 bits
bytes = bitfield(0)
date_time = args['date_time']
bytes[26:32] = date_time.year - 2000 # Año desde el 2000
bytes[17:26] = date_time.date().timetuple()[7] # Dia del año
bytes[12:17] = date_time.hour
bytes[00:12] = date_time.minute * 60 + date_time.second
# Separamos los bytes
init_tope = list(range_2_pot(32))
init_tope.reverse()
for init, tope in init_tope:
part_list.append(int(bytes[init:tope]))
# Dmseg y cDmseg
part_list.append(args['cseg'] % 100)
part_list.append(args['dmseg'] % 100)
def _pack_date(part_list, **args):
'''
@arg part_list: Argumento de entrada salida
'''
# Creamos un bitfield para la fecha, este va a ser de 32 bits
bytes = bitfield(0)
date_time = args['date_time']
bytes[26:32] = date_time.year - 2000 # Año desde el 2000
bytes[17:26] = date_time.date().timetuple()[7] # Dia del año
bytes[12:17] = date_time.hour
bytes[00:12] = date_time.minute * 60 + date_time.second
# Separamos los bytes
init_tope = list(range_2_pot(32))
init_tope.reverse()
for init, tope in init_tope:
part_list.append(int(bytes[init:tope]))
# Dmseg y cDmseg
part_list.append(args['cseg'] % 100)
part_list.append(args['dmseg'] % 100)
def send_message(self, message, ordered=False, reliable=False):
'''
Send a message and specify any options for the send method used.
A message sent inOrder is implicitly sent as reliable.
message is an instance of a subclass of packets.BasePacket.
Returns the number of bytes added to the output queue for this
message (header + message).
'''
self._last_send_timestamp = time.time()
self._outgoing_message_id += 1
message_id = self._outgoing_message_id
if ordered:
self._outgoing_ordered_sequence_number += 1
inorder_sequence_number = self._outgoing_ordered_sequence_number
else:
inorder_sequence_number = 0
packet_flags = bitfield()
packet_flags[0] = int(ordered)
packet_flags[1] = int(reliable)
message_transport_header = struct.pack(
'!' + self.MESSAGE_TRANSPORT_HEADER, message_id,
inorder_sequence_number, int(packet_flags))
message_bytes = message.get_packet_bytes()
total_length = len(message_bytes) + len(message_transport_header)
self._out_bytes += total_length
self._add_message_bytes_to_output_list(
message_id, message_transport_header + message_bytes, ordered
or reliable)
self._log.debug('Packet data length = %s' % len(message_bytes))
self._log.debug('Header length = %s' % len(message_transport_header))
self._log.debug('Added %d byte %s packet in outgoing buffer' %
(total_length, message.__class__.__name__))
return total_length
