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AS2805_old.py
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1073 lines (856 loc) · 41.9 KB
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__author__ = 'arthurvandermerwe'
import struct
from Host_Node.AS2805Errors import *
import binascii
class AS2805:
#Attributes
# Bits to be set 00000000 -> _BIT_POSITION_1 ... _BIT_POSITION_8
_BIT_POSITION_1 = 128 # 10 00 00 00
_BIT_POSITION_2 = 64 # 01 00 00 00
_BIT_POSITION_3 = 32 # 00 10 00 00
_BIT_POSITION_4 = 16 # 00 01 00 00
_BIT_POSITION_5 = 8 # 00 00 10 00
_BIT_POSITION_6 = 4 # 00 00 01 00
_BIT_POSITION_7 = 2 # 00 00 00 10
_BIT_POSITION_8 = 1 # 00 00 00 01
#Array to translate bit to position
_TMP = [0, _BIT_POSITION_8, _BIT_POSITION_1, _BIT_POSITION_2, _BIT_POSITION_3, _BIT_POSITION_4, _BIT_POSITION_5,
_BIT_POSITION_6, _BIT_POSITION_7]
_EMPTY_VALUE = 0
#2805 contants
_DEF = {}
# Every _DEF has:
# _DEF[N] = [X, Y, Z, W, K]
# N = bitnumber
# X = smallStr representation of the bit meanning
# Y = large str representation
# Z = length indicator of the bit (F, LL, LLL, LLLL, LLLLL, LLLLLL)
# W = size of the information that N need to has
# K = type os values a, an, ans, n, xn, b
_DEF[1] = ['BM', 'Bit Map Extended', 'F', 8, 'b']
_DEF[2] = ['2', 'Primary Account Number (PAN)', 'LL', 19, 'n']
_DEF[3] = ['3', 'Processing Code', 'F', 6, 'n']
_DEF[4] = ['4', 'Amount Transaction', 'F', 12, 'n']
_DEF[5] = ['5', 'Amount Settlement', 'F', 12, 'n']
_DEF[7] = ['7', 'Transmission Date and Time', 'F', 10, 'n']
_DEF[9] = ['9', 'Conversion Rate, Settlement', 'F', 8, 'n']
_DEF[10] = ['10', 'Conversion Rate, Cardholder Billing', 'F', 8, 'n']
_DEF[11] = ['11', 'Systems Trace Audit Number', 'F', 6, 'n']
_DEF[12] = ['12', 'Time, Local Transaction', 'F', 6, 'n']
_DEF[13] = ['13', 'Date, Local Transaction', 'F', 4, 'n']
_DEF[14] = ['14', 'Date, Expiration', 'F', 4, 'n']
_DEF[15] = ['15', 'Date, Settlement', 'F', 4, 'n']
_DEF[16] = ['16', 'Date, Conversion', 'F', 4, 'n']
_DEF[18] = ['18', 'Merchant Type', 'F', 4, 'n']
_DEF[22] = ['22', 'POS Entry Mode', 'F', 4, 'n']
_DEF[23] = ['23', 'Card Sequence Number', 'F', 3, 'n']
_DEF[25] = ['25', 'POS Condition Code', 'F', 2, 'xn']
_DEF[28] = ['28', 'Amount, Transaction Fee', 'F', 10, 'xn']
_DEF[32] = ['32', 'Acquiring Institution ID Code', 'LL', 11, 'n']
_DEF[33] = ['33', 'Forwarding Institution ID Code', 'LL', 11, 'n']
_DEF[35] = ['35', 'Track 2 Data', 'LL', 37, 'F']
_DEF[37] = ['37', 'Retrieval Reference Number', 'F', 24, 'an']
_DEF[38] = ['38', 'Authorization ID Response', 'F', 6, 'an']
_DEF[39] = ['39', 'Response Code', 'F', 4, 'an']
_DEF[41] = ['41', 'Card Acceptor Terminal ID', 'F', 16, 'ans']
_DEF[42] = ['42', 'Card Acceptor ID Code', 'F', 30, 'ans']
_DEF[43] = ['43', 'Card Acceptor Name Location', 'F', 80, 'ans']
_DEF[44] = ['44', 'Additional Response Data', 'LL', 25, 'ans']
_DEF[47] = ['47', 'Additional Data National', 'LLLLLL', 999, 'ans']
_DEF[48] = ['48', 'Additional Data Private', 'LLLLLL', 999, 'an']
_DEF[49] = ['49', 'Currency Code, Transaction', 'F', 3, 'n']
_DEF[50] = ['50', 'Currency Code, Settlement', 'F', 3, 'n']
_DEF[51] = ['51', 'Currency Code, Billing', 'F', 3, 'n']
_DEF[52] = ['52', 'PIN Data', 'F', 16, 'b']
_DEF[53] = ['53', 'Security Related Control Information', 'F', 16, 'n']
_DEF[55] = ['55', 'ICC Data', 'LLLL', 999, 'b']
_DEF[57] = ['57', 'Amount Cash', 'F', 12, 'n']
_DEF[58] = ['58', 'Ledger Balance', 'F', 12, 'n']
_DEF[59] = ['59', 'Account Balance', 'F', 12, 'n']
_DEF[64] = ['64', 'Message Authentication Code', 'F', 16, 'b']
_DEF[66] = ['66', 'Settlement Code', 'F', 1, 'n']
_DEF[70] = ['70', 'Network Management Information Code', 'F', 4, 'n']
_DEF[74] = ['74', 'Credits, Number', 'F', 10, 'n']
_DEF[75] = ['75', 'Credits, Reversal Number', 'F', 10, 'n']
_DEF[76] = ['76', 'Debits, Number', 'F', 10, 'n']
_DEF[77] = ['77', 'Debits, Reversal Number', 'F', 10, 'n']
_DEF[78] = ['78', 'Transfer, Number', 'F', 10, 'n']
_DEF[79] = ['79', 'Transfer, Reversal Number', 'F', 10, 'n']
_DEF[80] = ['80', 'Inquiries, Number', 'F', 10, 'n']
_DEF[81] = ['81', 'Authorizations, Number', 'F', 10, 'n']
_DEF[83] = ['83', 'Credits, Transaction Fee Amount', 'F', 12, 'n']
_DEF[85] = ['85', 'Debits, Transaction Fee Amount', 'F', 12, 'n']
_DEF[86] = ['86', 'Credits, Amount', 'F', 16, 'n']
_DEF[87] = ['87', 'Credits, Reversal Amount', 'F', 16, 'n']
_DEF[88] = ['88', 'Debits, Amount', 'F', 16, 'n']
_DEF[89] = ['89', 'Debits, Reversal Amount', 'F', 16, 'n']
_DEF[90] = ['90', 'Original Data Elements', 'F', 42, 'n']
_DEF[97] = ['97', 'Amount, Net Settlement', 'F', 17, 'xn']
_DEF[95] = ['95', 'Replacement Amounts', 'F', 42, 'ans']
_DEF[99] = ['99', 'Settlement Institution ID Code', 'LL', 11, 'n']
_DEF[100] = ['100', 'Receiving Institution ID Code', 'LL', 11, 'n']
_DEF[112] = ['112', 'Key Management Data', 'LLL', 999, 'b']
_DEF[118] = ['118', 'Cash Total Number', 'LLL', 10, 'n']
_DEF[119] = ['119', 'Cash Total Amount', 'LLL', 10, 'n']
_DEF[125] = ['125', 'Network Management Information', 'LLL', 40, 'ans']
_DEF[128] = ['128', 'MAC Extended', 'F', 8, 'b']
def __init__(self, iso="", debug=False):
"""Default Constructor of AS2805 Package.
It initialize a "brand new" AS2805 package
Example: To Enable debug you can use:
pack = AS2895(debug=True)
@param: iso a String that represents the ASCII of the package. The same that you need to pass to setIsoContent() method.
@param: debug (True or False) default False -> Used to print some debug infos. Only use if want that messages!
"""
#Bitmap internal representation
self.BITMAP = []
#Values
self._VALUES = []
#Bitmap ASCII representantion
self.BITMAP_HEX = ''
# MTI
self.MESSAGE_TYPE_INDICATION = ''
#Debug ?
self.DEBUG = debug
self.__initializeBitmap()
self.__initializeValues()
if iso != "":
self.setIsoContent(iso)
################################################################################################
def getLengthType(self, bit):
"""Method that return the bit Type
@param: bit -> Bit that will be searched and whose type will be returned
@return: str that represents the type of the bit
"""
return self._DEF[bit][2]
################################################################################################
def getMaxLength(self, bit):
"""Method that return the bit limit (Max size)
@param: bit -> Bit that will be searched and whose limit will be returned
@return: int that indicate the limit of the bit
"""
return self._DEF[bit][3]
################################################################################################
def getDataType(self, bit):
"""Method that return the bit value type
@param: bit -> Bit that will be searched and whose value type will be returned
@return: str that indicate the valuye type of the bit
"""
return self._DEF[bit][4]
################################################################################################
def getBitName(self, bit):
"""Method that return the large bit name
@param: bit -> Bit that will be searched and whose name will be returned
@return: str that represents the name of the bit
"""
return self._DEF[bit][1]
################################################################################################
def setTransationType(self, type):
"""Method that set Transation Type (MTI)
@param: type -> MTI to be setted
"""
self.MESSAGE_TYPE_INDICATION = ("0000%s" % type)[-4:]
################################################################################################
def setMTI(self, type):
"""Method that set Transation Type (MTI)
In fact, is an alias to "setTransationType" method
@param: type -> MTI to be setted
"""
self.setTransationType(type)
################################################################################################
def __initializeBitmap(self):
"""Method that inicialize/reset a internal bitmap representation
It's a internal method, so don't call!
"""
if self.DEBUG == True:
print 'Init bitmap'
if len(self.BITMAP) == 16:
for cont in range(0, 16):
self.BITMAP[cont] = self._EMPTY_VALUE
else:
for cont in range(0, 16):
self.BITMAP.append(self._EMPTY_VALUE)
################################################################################################
def __initializeValues(self):
"""Method that inicialize/reset a internal array used to save bits and values
It's a internal method, so don't call!
"""
if self.DEBUG == True:
print 'Init bitmap_values'
if len(self._VALUES) == 128:
for cont in range(0, 128):
self._VALUES[cont] = self._EMPTY_VALUE
else:
for cont in range(0, 128):
self._VALUES.append(self._EMPTY_VALUE)
################################################################################################
def setBit(self, bit, value):
"""Method used to set a bit with a value.
It's one of the most important method to use when using this library
@param: bit -> bit number that want to be setted
@param: value -> the value of the bit
@return: True/False default True -> To be used in the future!
@raise: BitInexistent Exception, ValueToLarge Exception
"""
if bit < 1 or bit > 128:
raise BitInexistent("Bit number %s dosen't exist!" % bit)
if self.DEBUG == True:
print 'Setting Bit %s (%s) = [%s]' % (bit, self.getBitName(bit), ReadableAscii(value))
# caculate the position insede bitmap
pos = 1
if self.getLengthType(bit) == 'F':
self.__setBitFixedLength(bit, value)
elif self.getLengthType(bit) == 'LL':
self.__setBitVariableLength(bit, value, 2)
elif self.getLengthType(bit) == 'LLL':
self.__setBitVariableLength(bit, value, 3)
elif self.getLengthType(bit) == 'LLLL':
self.__setBitVariableLength(bit, value, 4)
elif self.getLengthType(bit) == 'LLLLL':
self.__setBitVariableLength(bit, value, 5)
elif self.getLengthType(bit) == 'LLLLLL':
self.__setBitLLLLLLLength(bit, value, 6)
#Continuation bit?
if bit > 64:
self.BITMAP[0] = self.BITMAP[0] | self._TMP[2] # need to set bit 1 of first "bit" in bitmap
if (bit % 8) == 0:
pos = (bit / 8) - 1
else:
pos = (bit / 8)
#need to check if the value can be there .. AN , N ... etc ... and the size
self.BITMAP[pos] = self.BITMAP[pos] | self._TMP[(bit % 8) + 1]
return True
################################################################################################
def showBitmap(self):
"""Method that print the bitmap in ASCII form
Hint: Try to use getBitmap method and format your own print :)
"""
self.__buildBitmap()
# printing
print self.BITMAP_HEX
################################################################################################
def __buildBitmap(self):
"""Method that build the bitmap ASCII
It's a internal method, so don't call!
"""
self.BITMAP_HEX = ''
self.BITMAP_BIN = ''
for c in range(0, 16):
if (self.BITMAP[0] & self._BIT_POSITION_1) != self._BIT_POSITION_1:
# Only has the first bitmap
# if self.DEBUG == True:
# print '%d Bitmap = %d(Decimal) = %s (hexa) ' %(c, self.BITMAP[c], hex(self.BITMAP[c]))
tm = hex(self.BITMAP[c])[2:]
if len(tm) != 2:
tm = '0' + tm
self.BITMAP_HEX += tm
self.BITMAP_BIN += chr(self.BITMAP[c])
if c == 7:
break
else: # second bitmap
# if self.DEBUG == True:
# print '%d Bitmap = %d(Decimal) = %s (hexa) ' %(c, self.BITMAP[c], hex(self.BITMAP[c]))
tm = hex(self.BITMAP[c])[2:]
if len(tm) != 2:
tm = '0' + tm
self.BITMAP_HEX += tm
self.BITMAP_BIN += chr(self.BITMAP[c])
################################################################################################
def __getBitmapFromStr(self, bitmap):
"""Method that receive a bitmap str and transfor it to ISO8583 object readable.
@param: bitmap -> bitmap str to be readable
It's a internal method, so don't call!
"""
#Need to check if the size is correct etc...
cont = 0
if self.BITMAP_HEX != '':
self.BITMAP_HEX = ''
for x in range(0,32,2):
if (int(bitmap[0:2],16) & self._BIT_POSITION_1) != self._BIT_POSITION_1: # Only 1 bitmap
if self.DEBUG == True:
print 'Token[%d] %s converted to int is = %s' %(x, bitmap[x:x+2], int(bitmap[x:x+2],16))
self.BITMAP_HEX += bitmap[x:x+2]
self.BITMAP[cont] = int(bitmap[x:x+2],16)
if x == 14:
break
else: # Second bitmap
if self.DEBUG == True:
print 'Token[%d] %s converted to int is = %s' %(x, bitmap[x:x+2], int(bitmap[x:x+2],16))
self.BITMAP_HEX += bitmap[x:x+2]
self.BITMAP[cont] = int(bitmap[x:x+2],16)
cont += 1
################################################################################################
def showBitsFromBitmapStr(self, bitmap):
"""Method that receive a bitmap str, process it, and print a array with bits this bitmap string represents.
Usualy is used to debug things.
@param: bitmap -> bitmap str to be analized and translated to "bits"
"""
bits = self.__initializeBitsFromBitmapStr(bitmap)
print 'Bits inside %s = %s' % (bitmap, bits)
################################################################################################
def __initializeBitsFromBitmapStr(self, bitmap):
"""Method that receive a bitmap str, process it, and prepare AS2805 object to understand and "see" the bits and values inside the ISO ASCII package.
It's a internal method, so don't call!
@param: bitmap -> bitmap str to be analized and translated to "bits"
"""
bits = []
for c in range(0, 16):
for d in range(1, 9):
#if self.DEBUG == True:
#print 'Value (%d)-> %s & %s = %s' % (d,self.BITMAP[c] , self._TMP[d], (self.BITMAP[c] & self._TMP[d]) )
if (self.BITMAP[c] & self._TMP[d]) == self._TMP[d]:
if d == 1: # e o 8 bit
if self.DEBUG == True:
print 'Bit %s is present !!!' % ((c + 1) * 8)
bits.append((c + 1) * 8)
self._VALUES[(c + 1) * 8] = 'X'
else:
if (c == 0) & (d == 2): # Continuation bit
if self.DEBUG == True:
print 'Bit 1 is present !!!'
bits.append(1)
else:
if self.DEBUG == True:
print 'Bit %s is present !!!' % (c * 8 + d - 1)
bits.append(c * 8 + d - 1)
self._VALUES[c * 8 + d - 1] = 'X'
bits.sort()
return bits
################################################################################################
def __getBitsFromBitmap(self):
"""Method that process the bitmap and return a array with the bits presents inside it.
It's a internal method, so don't call!
"""
bits = []
for c in range(0, 16):
for d in range(1, 9):
# if self.DEBUG == True:
# print 'Value (%d)-> %s & %s = %s' % (d,self.BITMAP[c] , self._TMP[d], (self.BITMAP[c] & self._TMP[d]) )
if (self.BITMAP[c] & self._TMP[d]) == self._TMP[d]:
if d == 1: # e o 8 bit
if self.DEBUG == True:
print 'Bit %s is present !!!' % ((c + 1) * 8)
bits.append((c + 1) * 8)
else:
if (c == 0) & (d == 2): # Continuation bit
if self.DEBUG == True:
print 'Bit 1 is present !!!'
bits.append(1)
else:
if self.DEBUG == True:
print 'Bit %s is present !!!' % (c * 8 + d - 1)
bits.append(c * 8 + d - 1)
bits.sort()
return bits
################################################################################################
def __setBitVariableLength(self, bit, value, length):
"""Method that set a bit with value in form LL
It put the size in front of the value
Example: pack.setBit(99,'123') -> Bit 99 is a LL type, so this bit, in ASCII form need to be 03123. To understand, 03 is the size of the information and 123 is the information/value
@param: bit -> bit to be setted
@param: value -> value to be setted
@raise: ValueToLarge Exception
It's a internal method, so don't call!
"""
value = "%s" % value
if len(value) > 10 ** length - 1:
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (
bit, self.getLengthType(bit), self.getMaxLength(bit)))
if len(value) > self.getMaxLength(bit):
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (
bit, self.getLengthType(bit), self.getMaxLength(bit)))
size = "%s" % len(value)
type = self.getDataType(bit)
if int(size)%2 != 0:
value = value + 'F'
#ICC VALUES
if type == 'b' and length == 4:
size = str(int(size) / 2)
self._VALUES[bit] = "%s%s" % (size.zfill(length), value)
def __setBitLLLLLLLength(self, bit, value, length):
"""Method that set a bit with value in form LL
It put the size in front of the value
Example: pack.setBit(99,'123') -> Bit 99 is a LL type, so this bit, in ASCII form need to be 03123. To understand, 03 is the size of the information and 123 is the information/value
@param: bit -> bit to be setted
@param: value -> value to be setted
@raise: ValueToLarge Exception
It's a internal method, so don't call!
"""
value = "%s" % value
if len(value) > 10 ** length - 1:
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (
bit, self.getLengthType(bit), self.getMaxLength(bit)))
if len(value) > self.getMaxLength(bit):
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (
bit, self.getLengthType(bit), self.getMaxLength(bit)))
size_int = int(len(value))
size_int = size_int / 2
if size_int < 10:
size_int = '00' + str(size_int)
else:
size_int = '0' + str(size_int)
#print size_int
size_ascii = binascii.hexlify(size_int)
#print "%s%s0" % (size_ascii, value)
self._VALUES[bit] = "%s%s" % (size_ascii, value)
################################################################################################
def __setBitFixedLength(self, bit, value):
"""Method that set a bit with value in form N
It complete the size of the bit with a default value
Example: pack.setBit(3,'30000') -> Bit 3 is a N type, so this bit, in ASCII form need to has size = 6 (ISO especification) so the value 30000 size = 5 need to receive more "1" number.
In this case, will be "0" in the left. In the package, the bit will be sent like '030000'
@param: bit -> bit to be setted
@param: value -> value to be setted
@raise: ValueToLarge Exception
It's a internal method, so don't call!
"""
value = "%s" % value
length = self.getMaxLength(bit)
if len(value) > self.getMaxLength(bit):
value = value[0:self.getMaxLength(bit)]
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (bit, self.getLengthType(bit), self.getMaxLength(bit)))
type = self.getDataType(bit)
if type == 'nF':
value = value + 'F'
self._VALUES[bit] = value.zfill(self.getMaxLength(bit))
else:
self._VALUES[bit] = value.zfill(self.getMaxLength(bit))
def __setBitXFixedLength(self, bit, value):
"""Method that set a bit with value in form N
It complete the size of the bit with a default value
Example: pack.setBit(3,'30000') -> Bit 3 is a N type, so this bit, in ASCII form need to has size = 6 (ISO especification) so the value 30000 size = 5 need to receive more "1" number.
In this case, will be "0" in the left. In the package, the bit will be sent like '030000'
@param: bit -> bit to be setted
@param: value -> value to be setted
@raise: ValueToLarge Exception
It's a internal method, so don't call!
this method is for a x Fixed bit, where there is a charachter appended in front of the value
"""
value = "%s" % value
length = self.getMaxLength(bit)
if len(value) > self.getMaxLength(bit):
value = '0' + value[0:self.getMaxLength(bit)]
raise ValueToLarge('Error: value up to size! Bit[%s] of type %s limit size = %s' % (bit, self.getLengthType(bit), self.getMaxLength(bit)))
self._VALUES[bit] = value.zfill(self.getMaxLength(bit))
################################################################################################
def dumpFields(self):
"""Method that show in detail a list of bits , values and types inside the object
Example: output to
(...)
iso.setBit(2,2)
iso.setBit(4,4)
(...)
iso.showIsoBits()
(...)
Bit[2] of type LL has limit 19 = 012
Bit[4] of type N has limit 12 = 000000000004
(...)
"""
res = '\n%s:\n' % self.MESSAGE_TYPE_INDICATION
for bit in range(0, 126):
if self._VALUES[bit] <> self._EMPTY_VALUE:
res += ' '
if self.getLengthType(bit) == 'LL':
res += "[LL "
elif self.getLengthType(bit) == 'LLL':
res += "[LLL "
elif self.getLengthType(bit) == 'LLLL':
res += "[LLLL "
elif self.getLengthType(bit) == 'LLLLL':
res += "[LLLLL "
elif self.getLengthType(bit) == 'LLLLLL':
res += "[LLLLLL "
else:
res += "[Fixed "
res += self.getDataType(bit)
res += " " * (5 - len(self.getDataType(bit)))
res += "%6d] " % self.getMaxLength(bit)
res += ("000%s" % bit)[-3:]
#PCI-DSS Masking of card holder data
if bit == 2: # PAN
res += " [%s] " % ReadableAscii(self.getBit(bit))
else:
res += " [%s] " % ReadableAscii(self.getBit(bit))
res += self.getBitName(bit)
res += '\n'
#print res
return res
################################################################################################
def showRawIso(self):
"""Method that print AS2805 ASCII complete representation
Example:
iso = AS2805()
iso.setMTI('0800')
iso.setBit(2,2)
iso.setBit(4,4)
iso.setBit(12,12)
iso.setBit(17,17)
iso.setBit(99,99)
iso.showRawIso()
output (print) -> 0800d010800000000000000000002000000001200000000000400001200170299
Hint: Try to use getRawIso method and format your own print :)
"""
resp = self.getRawIso()
print resp
################################################################################################
def getRawIso(self):
"""Method that return AS2805 ASCII complete representation
Example:
iso = AS2805()
iso.setMTI('0800')
iso.setBit(2,2)
iso.setBit(4,4)
iso.setBit(12,12)
iso.setBit(17,17)
iso.setBit(99,99)
str = iso.getRawIso()
print 'This is the ASCII package %s' % str
output (print) -> This is the ASCII package 0800d010800000000000000000002000000001200000000000400001200170299
@return: str with complete ASCII AS2805
@raise: InvalidMTI Exception
"""
self.__buildBitmap()
if self.MESSAGE_TYPE_INDICATION == '':
raise InvalidMTI('Check MTI! Do you set it?')
resp = ""
resp += self.MESSAGE_TYPE_INDICATION
resp += binascii.hexlify(self.BITMAP_BIN)
for cont in range(0, 128):
if self._VALUES[cont] <> self._EMPTY_VALUE:
resp = "%s%s" % (resp, self._VALUES[cont])
return resp
################################################################################################
def __setMTIFromStr(self, iso):
"""Method that get the first 4 characters to be the MTI.
It's a internal method, so don't call!
"""
if self.DEBUG == True:
print '__setMTIFromStr(%s)' % ReadableAscii(iso)
self.MESSAGE_TYPE_INDICATION = iso[0:4]
if self.DEBUG == True:
print 'MTI found was [%s]' % self.MESSAGE_TYPE_INDICATION
################################################################################################
def getMTI(self):
"""Method that return the MTI of the package
@return: str -> with the MTI
"""
#Need to validate if the MTI was setted ...etc ...
return self.MESSAGE_TYPE_INDICATION
################################################################################################
def getBitmap(self):
"""Method that return the ASCII Bitmap of the package
@return: str -> with the ASCII Bitmap
"""
if self.BITMAP_HEX == '':
self.__buildBitmap()
return self.BITMAP_HEX
################################################################################################
def getValuesArray(self):
"""Method that return an internal array of the package
@return: array -> with all bits, presents or not in the bitmap
"""
return self._VALUES
################################################################################################
def __getBitFromStr(self, strWithoutMtiBitmap):
"""Method that receive a string (ASCII) without MTI and Bitmaps (first and second), understand it and remove the bits values
@param: str -> with all bits presents whithout MTI and bitmap
It's a internal method, so don't call!
"""
if self.DEBUG == True:
print '__getBitFromStr(%s)' % ReadableAscii(strWithoutMtiBitmap)
offset = 0
# jump bit 1 because it was alread defined in the "__initializeBitsFromBitmapStr"
for cont in range(2, 128):
if self._VALUES[cont] <> self._EMPTY_VALUE:
if self.DEBUG == True:
print 'String = %s offset = %s bit = %s' % (strWithoutMtiBitmap[offset:], offset, cont)
lengthIndicator = 0
if self.getLengthType(cont) == 'LL':
lengthIndicator = 2
elif self.getLengthType(cont) == 'LLL':
lengthIndicator = 3
elif self.getLengthType(cont) == 'LLLL':
lengthIndicator = 4
elif self.getLengthType(cont) == 'LLLLL':
lengthIndicator = 5
elif self.getLengthType(cont) == 'LLLLLL':
lengthIndicator = 6
if lengthIndicator >= 2 and lengthIndicator < 6 and self.getDataType(cont) != 'nF':
valueSize = int(strWithoutMtiBitmap[offset:offset + lengthIndicator])
if self.DEBUG == True:
print 'Variable Length Field (%s) Size = [%s]' % ('L' * lengthIndicator, valueSize)
if valueSize > self.getMaxLength(cont):
raise ValueToLarge("This bit is larger than the especification!")
if(lengthIndicator == 4 and self.getDataType(cont) == 'b'):
valueSize = valueSize *2
self._VALUES[cont] = strWithoutMtiBitmap[offset:offset + lengthIndicator] + strWithoutMtiBitmap[offset + lengthIndicator:offset + lengthIndicator + valueSize]
if self.DEBUG == True:
print '\tSetting bit [%s] Value=[%s]' % (cont, self._VALUES[cont])
if valueSize%2 != 0:
valueSize += 1
offset += valueSize + lengthIndicator
elif lengthIndicator >= 2 and lengthIndicator < 6 and self.getDataType(cont) == 'nF':
valueSize = int(strWithoutMtiBitmap[offset:offset + lengthIndicator])
if self.DEBUG == True:
print 'Variable Length Field (%s) Size = [%s]' % ('L' * lengthIndicator, valueSize)
if valueSize > self.getMaxLength(cont):
raise ValueToLarge("This bit is larger than the especification!")
valueSize += 1
self._VALUES[cont] = strWithoutMtiBitmap[offset:offset + lengthIndicator] + strWithoutMtiBitmap[offset + lengthIndicator:offset + lengthIndicator + valueSize]
if self.DEBUG == True:
print '\tSetting bit [%s] Value=[%s]' % (cont, self._VALUES[cont])
offset += valueSize + lengthIndicator
elif self.getLengthType(cont) == 'F':
# Fixed Length Field
self._VALUES[cont] = strWithoutMtiBitmap[offset:self.getMaxLength(cont) + offset]
offset += self.getMaxLength(cont)
if self.DEBUG == True:
print 'Fixed Length Field Size = [%s]' % (self.getMaxLength(cont))
print '\tSetting bit [%s] Value=[%s]' % (cont, self._VALUES[cont])
"""
elif self.getLengthType(cont) == 'XF':
#offset +=1
# Fixed Length Field with extra charachter in front
self._VALUES[cont] = strWithoutMtiBitmap[offset:self.getMaxLength(cont) + offset]
if self.DEBUG == True:
print 'Fixed Length Field Size = [%s]' % (self.getMaxLength(cont))
print '\tSetting bit [%s] Value=[%s]' % (cont, self._VALUES[cont])
offset += self.getMaxLength(cont)
"""
elif lengthIndicator == 6:
valueSize = strWithoutMtiBitmap[offset:offset + 6]
valueSize = int(''.join(chr(int(valueSize[i:i+2], 16)) for i in range(0, len(valueSize), 2)))
valueSize = valueSize *2
if valueSize == 32:
valueSize = 48
#print strWithoutMtiBitmap
self._VALUES[cont] = strWithoutMtiBitmap[offset:offset + 6] + strWithoutMtiBitmap[offset + 6:offset + 6 + valueSize]
if self.DEBUG == True:
print ('\tSetting bit %s value %s' % (cont, self._VALUES[cont]))
offset += valueSize + 6
################################################################################################
################################################################################################
def setIsoContent(self, iso):
"""Method that receive a complete AS2805 string (ASCII) understand it and remove the bits values
Example:
iso = '0210B238000102C080040000000000000002100000000000001700010814465469421614465701081100301000000N399915444303500019991544986020 Value not allowed009000095492'
i2 = AS2805()
# in this case, we need to redefine a bit because default bit 42 is LL and in this especification is "N"
# the rest remain, so we use "get" :)
i2.redefineBit(42, '42', i2.getBitName(42), 'N', i2.getMaxLength(42), i2.getDataType(42) )
i2.setIsoContent(iso2)
print 'Bitmap = %s' %i2.getBitmap()
print 'MTI = %s' %i2.getMTI()
print 'This ISO has bits:'
v3 = i2.getBitsAndValues()
for v in v3:
print 'Bit %s of type %s with value = %s' % (v['bit'],v['type'],v['value'])
@param: str -> complete AS2805 string
@raise: InvalidAS2805 Exception
if len(iso) < 20:
raise InvalidAS2805('This is not a valid iso!!')
if self.DEBUG == True:
print 'setIsoContent(%s)' % ReadableAscii(iso)
self.__setMTIFromStr(iso)
#Cut off the MTI and process the rest of the message
isoT = iso[4:]
self.__getBitmapFromStr(isoT)
self.__initializeBitsFromBitmapStr(self.BITMAP_HEX)
if self.DEBUG == True:
print '_VALUES (before) %s ' % self._VALUES
self.__getBitFromStr(iso[4 + len(self.BITMAP_HEX) / 2:])
if self.DEBUG == True:
print '_VALUES (after) %s ' % self._VALUES
"""""
if len(iso) < 20:
raise InvalidAS2805('This is not a valid iso!!')
if self.DEBUG == True:
print 'ASCII to process <%s>' % iso
self.__setMTIFromStr(iso)
isoT = iso[4:]
self.__getBitmapFromStr(isoT)
self.__initializeBitsFromBitmapStr(self.BITMAP_HEX)
if self.DEBUG == True:
print 'This is the array of bits (before) %s ' % self._VALUES
self.__getBitFromStr(iso[4+len(self.BITMAP_HEX):])
if self.DEBUG == True:
print 'This is the array of bits (after) %s ' % self._VALUES
################################################################################################
def getBitsAndValues(self):
"""Method that return an array of bits, values, types etc.
Each array value is a dictionary with: {'bit':X ,'type': Y, 'value': Z} Where:
bit: is the bit number
type: is the bit type
value: is the bit value inside this object
so the Generic array returned is: [ (...),{'bit':X,'type': Y, 'value': Z}, (...)]
Example:
p1 = AS2805()
p1.setMTI('0800')
p1.setBit(2,2)
p1.setBit(4,4)
p1.setBit(12,12)
p1.setBit(17,17)
p1.setBit(99,99)
v1 = p1.getBitsAndValues()
for v in v1:
print 'Bit %s of type %s with value = %s' % (v['bit'],v['type'],v['value'])
@return: array of values.
"""
ret = []
for cont in range(2, 126):
if self._VALUES[cont] != self._EMPTY_VALUE:
_TMP = {}
_TMP['bit'] = "%d" % cont
_TMP['type'] = self.getLengthType(cont)
_TMP['value'] = self.getBit(cont)
ret.append(_TMP)
return ret
################################################################################################
def getBit(self, bit):
"""Return the value of the bit
@param: bit -> the number of the bit that you want the value
@raise: BitInexistent Exception, BitNotSet Exception
"""
if bit < 1 or bit > 128:
raise BitInexistent("Bit number %s dosen't exist!" % bit)
if self._VALUES[bit] == self._EMPTY_VALUE:
raise BitNotSet("Bit number %s was not set!" % bit)
if self.getLengthType(bit) == "LL":
value = self._VALUES[bit][2:]
elif self.getLengthType(bit) == "LLL":
value = self._VALUES[bit][3:]
elif self.getLengthType(bit) == "LLLL":
value = self._VALUES[bit][4:]
elif self.getLengthType(bit) == "LLLLL":
value = self._VALUES[bit][5:]
elif self.getLengthType(bit) == "LLLLLL":
value = self._VALUES[bit][6:]
else:
value = self._VALUES[bit]
return value
################################################################################################
def getNetworkISO(self, bigEndian=True):
"""Method that return AS2805 ASCII package with the size in the beginning
By default, it return the package with size represented with big-endian.
Is the same that:
import struct
(...)
iso = AS2805()
iso.setBit(3,'300000')
(...)
ascii = iso.getRawIso()
# Example: big-endian
# To little-endian, replace '!h' with '<h'
netIso = struct.pack('!h',len(iso))
netIso += ascii
# Example: big-endian
# To little-endian, replace 'iso.getNetworkISO()' with 'iso.getNetworkISO(False)'
print 'This <%s> the same that <%s>' % (iso.getNetworkISO(),netIso)
@param: bigEndian (True|False) -> if you want that the size be represented in this way.
@return: size + ASCII AS2805 package ready to go to the network!
@raise: InvalidMTI Exception
"""
netIso = ""
asciiIso = self.getRawIso()
if bigEndian:
netIso = struct.pack('!h', len(asciiIso))
if self.DEBUG == True:
print 'Pack Big-endian'
else:
# netIso = struct.pack('<h', len(asciiIso))
if self.DEBUG == True:
print 'Pack Little-endian'
netIso += asciiIso
return netIso
################################################################################################
def setNetworkISO(self, iso, bigEndian=True):
"""Method that receive sie + ASCII AS2805 package and transfor it in the AS2805 object.
By default, it recieve the package with size represented with big-endian.
Is the same that:
import struct
(...)
iso = AS2805()
iso.setBit(3,'300000')
(...)
# Example: big-endian
# To little-endian, replace 'iso.getNetworkISO()' with 'iso.getNetworkISO(False)'
netIso = iso.getNetworkISO()
newIso = AS2805()
# Example: big-endian
# To little-endian, replace 'newIso.setNetworkISO()' with 'newIso.setNetworkISO(False)'
newIso.setNetworkISO(netIso)
#Is the same that:
#size = netIso[0:2]
## To little-endian, replace '!h' with '<h'
#size = struct.unpack('!h',size )
#newIso.setIsoContent(netIso[2:size])
arr = newIso.getBitsAndValues()
for v in arr:
print 'Bit %s Type %s Value = %s' % (v['bit'],v['type'],v['value'])
@param: iso -> str that represents size + ASCII AS2805 package
@param: bigEndian (True|False) -> Codification of the size.
@raise: InvalidAS2805 Exception
"""
if len(iso) < 24:
raise InvalidAS2805('This is not a valid iso!!Invalid Size')
size = iso[0:2]
if bigEndian: