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__init__.py
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__init__.py
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# -*- coding: iso-8859-1 -*-
"""smartcard.util package
__author__ = "http:https://www.gemalto.com"
Copyright 2001-2012 gemalto
Author: Jean-Daniel Aussel, mailto:[email protected]
This file is part of pyscard.
pyscard is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
pyscard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with pyscard; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""
PACK = 1
HEX = 2
UPPERCASE = 4
COMMA = 8
def padd(bytelist, length, padding='FF'):
""" Padds a byte list with a constant byte value (default is x0FF)
bytelist: the byte list to padd
length: the total length of the resulting byte list;
no padding if length is smaller than the byte list length
padding: padding value (default is 0xff)
returns the padded bytelist
>>> padd([59, 101, 0, 0, 156, 17, 1, 1, 3], 16)
[59, 101, 0, 0, 156, 17, 1, 1, 3, 255, 255, 255, 255, 255, 255, 255]
>>> padd([59, 101, 0, 0, 156, 17, 1, 1, 3], 12, '80')
[59, 101, 0, 0, 156, 17, 1, 1, 3, 128, 128, 128]
>>> padd([59, 101, 0, 0, 156, 17, 1, 1, 3], 8)
[59, 101, 0, 0, 156, 17, 1, 1, 3]
"""
if len(bytelist) < length:
for index in range(length - len(bytelist)):
bytelist.append(eval('0x' + padding))
return bytelist
def toASCIIBytes(stringtoconvert):
"""Returns a list of ASCII bytes from a string.
stringtoconvert: the string to convert into a byte list
returns a byte list of the ASCII codes of the string characters
toASCIIBytes() is the reverse of toASCIIString()
>>> toASCIIBytes("Number 101")
[78, 117, 109, 98, 101, 114, 32, 49, 48, 49]
"""
return map(ord, list(stringtoconvert))
def toASCIIString(bytelist):
"""Returns a string representing a list of ASCII bytes.
bytelist: list of ASCII bytes to convert into a string
returns a string from the ASCII code list
toASCIIString() is the reverse of toASCIIBytes()
>>> toASCIIString([0x4E,0x75,0x6D,0x62,0x65,0x72,0x20,0x31,0x30,0x31])
'Number 101'
"""
return ''.join(map(chr, bytelist))
def toBytes(bytestring):
"""Returns a list of bytes from a byte string
bytestring: a byte string
>>> toBytes("3B 65 00 00 9C 11 01 01 03")
[59, 101, 0, 0, 156, 17, 1, 1, 3]
>>> toBytes("3B6500009C11010103")
[59, 101, 0, 0, 156, 17, 1, 1, 3]
>>> toBytes("3B6500 009C1101 0103")
[59, 101, 0, 0, 156, 17, 1, 1, 3]
"""
from struct import unpack
import re
packedstring = ''.join(re.split(r'\W+', bytestring))
try:
return reduce(lambda x, y: x + [int(y, 16)],
unpack('2s' * (len(packedstring) / 2),
packedstring), [])
except:
raise TypeError('not a string representing a list of bytes')
"""GSM3.38 character conversion table."""
__dic_GSM_3_38__ = {
'@': 0x00, # @ At symbol
'£': 0x01, # £ Britain pound symbol
'$': 0x02, # $ Dollar symbol
chr(0xA5): 0x03, # ¥ Yen symbol
'è': 0x04, # è e accent grave
'é': 0x05, # é e accent aigu
'ù': 0x06, # ù u accent grave
chr(0xEC): 0x07, # ì i accent grave
chr(0xF2): 0x08, # ò o accent grave
chr(0xC7): 0x09, # Ç C majuscule cedille
chr(0x0A): 0x0A, # LF Line Feed
chr(0xD8): 0x0B, # Ø O majuscule barré
chr(0xF8): 0x0C, # ø o minuscule barré
chr(0x0D): 0x0D, # CR Carriage Return
chr(0xC5): 0x0E, # Å Angstroem majuscule
chr(0xE5): 0x0F, # å Angstroem minuscule
'_': 0x11, # underscore
chr(0xC6): 0x1C, # Æ majuscule ae
chr(0xE6): 0x1D, # æ minuscule ae
chr(0xDF): 0x1E, # ß s dur allemand
chr(0xC9): 0x1F, # É majuscule é
' ': 0x20,
'!': 0x21,
'\"': 0x22, # guillemet
'#': 0x23,
'¤': 0x24, # ¤ carré
chr(0xA1): 0x40, # ¡ point d'exclamation renversé
chr(0xC4): 0x5B, # Ä majuscule A trema
chr(0xE4): 0x7B, # ä minuscule a trema
chr(0xD6): 0x5C, # Ö majuscule O trema
chr(0xF6): 0x7C, # ö minuscule o trema
chr(0xD1): 0x5D, # Ñ majuscule N tilda espagnol
chr(0xF1): 0x7D, # ñ minuscule n tilda espagnol
chr(0xDC): 0x5E, # Ü majuscule U trema
chr(0xFC): 0x7E, # ü minuscule u trema
chr(0xA7): 0x5F, # § signe paragraphe
chr(0xBF): 0x60, # ¿ point interrogation renversé
'à': 0x7F # a accent grave
}
def toGSM3_38Bytes(stringtoconvert):
"""Returns a list of bytes from a string using GSM 3.38 conversion table.
stringtoconvert: string to convert
returns a list of bytes
>>> toGSM3_38Bytes("@ùPascal")
[0, 6, 80, 97, 115, 99, 97, 108]
"""
bytes = []
for char in stringtoconvert:
if ((char >= "%") and (char <= "?")):
bytes.append(ord(char))
elif ((char >= "A") and (char <= "Z")):
bytes.append(ord(char))
elif ((char >= "a") and (char <= "z")):
bytes.append(ord(char))
else:
bytes.append(int(__dic_GSM_3_38__[char]))
return bytes
def toHexString(bytes=[], format=0):
"""Returns an hex string representing bytes
bytes: a list of bytes to stringify,
e.g. [59, 22, 148, 32, 2, 1, 0, 0, 13]
format: a logical OR of
COMMA: add a comma between bytes
HEX: add the 0x chars before bytes
UPPERCASE: use 0X before bytes (need HEX)
PACK: remove blanks
>>> vals = [0x3B, 0x65, 0x00, 0x00, 0x9C, 0x11, 0x01, 0x01, 0x03]
>>> toHexString(vals)
'3B 65 00 00 9C 11 01 01 03'
>>> toHexString(vals, COMMA)
'3B, 65, 00, 00, 9C, 11, 01, 01, 03'
>>> toHexString(vals, HEX)
'0x3B 0x65 0x00 0x00 0x9C 0x11 0x01 0x01 0x03'
>>> toHexString(vals, HEX | COMMA)
'0x3B, 0x65, 0x00, 0x00, 0x9C, 0x11, 0x01, 0x01, 0x03'
>>> toHexString(vals, PACK)
>>> toHexString(vals, HEX | UPPERCASE)
'0X3B 0X65 0X00 0X00 0X9C 0X11 0X01 0X01 0X03'
>>> toHexString(vals, HEX | UPPERCASE | COMMA)
'0X3B, 0X65, 0X00, 0X00, 0X9C, 0X11, 0X01, 0X01, 0X03'
"""
from string import rstrip
if type(bytes) is not list:
raise TypeError('not a list of bytes')
if bytes == None or bytes == []:
return ""
else:
pformat = "%-0.2X"
if COMMA & format:
pformat = pformat + ","
pformat = pformat + " "
if PACK & format:
pformat = rstrip(pformat)
if HEX & format:
if UPPERCASE & format:
pformat = "0X" + pformat
else:
pformat = "0x" + pformat
return rstrip(rstrip(
reduce(lambda a, b: a + pformat % ((b + 256) % 256),
[""] + bytes)), ',')
# FIXME This appears to duplicate toASCIIString()
def HexListToBinString(hexlist):
"""
>>> HexListToBinString([78, 117, 109, 98, 101, 114, 32, 49, 48, 49])
'Number 101'
"""
binstring = ""
for byte in hexlist:
binstring = binstring + chr(eval('0x%x' % byte))
return binstring
# FIXME This appears to duplicate to ASCIIBytes()
def BinStringToHexList(binstring):
"""
>>> BinStringToHexList("Number 101")
[78, 117, 109, 98, 101, 114, 32, 49, 48, 49]
"""
hexlist = []
for byte in binstring:
hexlist = hexlist + [ord(byte)]
return hexlist
def hl2bs(hexlist):
"""An alias for HexListToBinString
>>> hl2bs([78, 117, 109, 98, 101, 114, 32, 49, 48, 49])
'Number 101'
"""
return HexListToBinString(hexlist)
def bs2hl(binstring):
"""An alias for BinStringToHexList
>>> bs2hl("Number 101")
[78, 117, 109, 98, 101, 114, 32, 49, 48, 49]
"""
return BinStringToHexList(binstring)