def set_data(self, blob):
# setting the data of a packet means, it is parsed actually.
# note: data does NOT containt cmd_class, cmd_instr anymore!
# however, it DOES contain the LENGTH
# now we introspect data
pos = 0
bitmaps = []
if blob[pos] == 0xff:
# length field is next two bytes.
# @todo: could be wrong:
l = (blob[pos + 1] << 8) + blob[pos + 2]
pos += 2 # consume 2 bytes.
else:
l = blob[pos]
pos += 1 # we move one byte further in all cases.
# now we should read our data ahead to length.
# look ahead if we have enough data.
if len(blob) >= pos + l:
data = blob[pos:pos + l]
else:
raise self.NotEnoughData, "Not enough Data to create the packet data."
# step 1: fixed arguments.
## if this packet has some fixed arguments, they have to be
## parsed first.
data = self.consume_fixed(data, l)
# step 2: bitmaps.
while data:
bmp, data = BMP.read_stream(data)
bitmaps += [bmp]
self.bitmaps = bitmaps
# -*- coding: utf-8 -*-
"""
Implements all known Bitmaps in two Dictionaries:
BITMAPS is keyed after the CODE of the bitmap in the protocol.
use this if you know "the code" of the bitmap and retrieve its class,
keyname (and description)
BITMAPS_ARGS is created from BITMAPS, representing bitmaps in a
key-value-store. use this if you know "the key name" of the bitmap
and want to get its class, code (and description)
"""
from ecrterm.packets.bmp import BMP
BITMAPS = {
0x01 : (BMP.FormatByte(1), 'timeout', "binary time-out"),
0x02 : (BMP.FormatByte(1), 'max_status_infos', "binary max.status infos"),
0x03 : (BMP.FormatByte(1), 'service_byte', "binary service-byte"),
0x04 : (BMP.FormatBCDByte(6), 'amount', "Amount"),
0x05 : (BMP.FormatByte(1), 'pump_nr', "binary pump-Nr."),
0x06 : (BMP.FormatTLV(), 'tlv', "TLV"),
0x0B : (BMP.FormatBCDByte(3), 'trace_number', "trace-number"),
0x0C : (BMP.FormatBCDByte(3), 'time', "Time"),
0x0D : (BMP.FormatBCDByte(2), 'date_day', "date, MM DD (see AA)"),
0x0E : (BMP.FormatBCDByte(2), 'card_expire', "expiry-date, YY MM"),
0x17 : (BMP.FormatBCDByte(2), 'card_sequence_number', "card sequence-number"),
0x19 : (BMP.FormatByte(1), 'type', "binary status-byte/payment-type/card-type"),
0x22 : (BMP.FormatLLVAR(), 'card_number', "card_number, PAN / EF_ID, 'E' used to indicate masked numeric digit"),
0x23 : (BMP.FormatLLVAR(), 'track_2', "track 2 data, 'E' used to indicate masked numeric digit1"),
0x24 : (BMP.FormatLLLVAR(), 'track_3', "track 3 data, 'E' used to indicate masked numeric digit1"),
0x27 : (BMP.FormatByte(1), 'result_code', "binary result-code"),
# -*- coding: utf-8 -*-
"""
Implements all known Bitmaps in two Dictionaries:
BITMAPS is keyed after the CODE of the bitmap in the protocol.
use this if you know "the code" of the bitmap and retrieve its class,
keyname (and description)
BITMAPS_ARGS is created from BITMAPS, representing bitmaps in a
key-value-store. use this if you know "the key name" of the bitmap
and want to get its class, code (and description)
"""
from ecrterm.packets.bmp import BMP
BITMAPS = {
0x01: (BMP.FormatByte(1), 'timeout', 'binary time-out'),
0x02: (BMP.FormatByte(1), 'max_status_infos', 'binary max.status infos'),
0x03: (BMP.FormatByte(1), 'service_byte', 'binary service-byte'),
0x04: (BMP.FormatBCDByte(6), 'amount', 'Amount'),
0x05: (BMP.FormatByte(1), 'pump_nr', 'binary pump-Nr.'),
0x06: (BMP.FormatTLV(), 'tlv', 'TLV'),
0x0B: (BMP.FormatBCDByte(3), 'trace_number', 'trace-number'),
0x0C: (BMP.FormatBCDByte(3), 'time', 'Time'),
0x0D: (BMP.FormatBCDByte(2), 'date_day', 'date, MM DD (see AA)'),
0x0E: (BMP.FormatBCDByte(2), 'card_expire', 'expiry-date, YY MM'),
0x17:
(BMP.FormatBCDByte(2), 'card_sequence_number', 'card sequence-number'),
0x19:
(BMP.FormatByte(1), 'type', 'binary status-byte/payment-type/card-type'),
0x22: (BMP.FormatLLVAR(), 'card_number',
'card_number, PAN / EF_ID, \'E\' used to indicate masked numeric '