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initial problem fixed 

git-svn-id: svn+ssh://localhost/home/henryk/svn/cyberflex-shell/trunk@50 f711b948-2313-0410-aaa9-d29f33439f0b
This commit is contained in:
hploetz 2006-05-18 05:37:52 +00:00
parent 2ec6001376
commit 861b8da00c
1 changed files with 32 additions and 32 deletions
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64
utils.py
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@ -85,7 +85,13 @@ def _unformat_hexdump(dump):
hexdump = " ".join([line[7:54] for line in dump.splitlines()])
return binascii.a2b_hex("".join([e != " " and e or "" for e in hexdump]))
class APDU:
def _make_byte_property(prop):
"Make a byte property(). This is meta code."
return property(lambda self: getattr(self, "_"+prop, 3),
lambda self, value: self._setbyte(prop, value), None,
"The %s attribute of the APDU" % prop)
class APDU(object):
"Base class for an APDU"
def __init__(self, *args, **kwargs):
@ -129,10 +135,7 @@ class APDU:
self.parse( initbuff )
for (name, value) in kwargs.items():
print "setting %r=%r" % (name, value)
setattr(self, name, value)
print "is now %r" % getattr(self, name)
print "cla=%r" % self.cla
def _getdata(self):
return self._data
@ -143,6 +146,7 @@ class APDU:
self._data = [int(e) for e in value]
else:
raise ValueError, "'data' attribute can only be a str or a list of int, not %s" % type(value)
self.Lc = len(value)
def _deldata(self):
del self._data; self.data = ""
@ -157,52 +161,51 @@ class APDU:
setattr(self, "_"+name, ord(value))
else:
raise ValueError, "'%s' attribute can only be a byte, that is: int or str, not %s" % (namelower, type(value))
def _make_byte_properties(obj, props):
"Generates properties for all names in props and their lowercase equivalents"
## This is because I was too lazy to type it all out. Ignore it if you don't know what it's good for
for v in props:
setattr(obj, v,
property(lambda self: getattr(self, "_"+v, 0),
lambda self: self._setbyte(v, value), None,
"The %s attribute of the APDU" % v)
)
setattr(obj, v.lower(),
property(lambda self: getattr(self, "_"+v, 0),
lambda self: self._setbyte(v, value), None,
"The %s attribute of the APDU" % v)
)
class C_APDU(APDU):
"Class for a command APDU"
def parse(self, apdu):
"Parse a full command APDU and assign the values to our object, overwriting whatever there was."
print "parse(%r)" % apdu
_make_byte_properties(C_APDU, ("CLA", "INS", "P1", "P2", "Lc", "Le") )
apdu = map( lambda a: (isinstance(a, str) and (ord(a),) or (a,))[0], apdu)
apdu = apdu + [0] * max(6-len(apdu), 0)
self.CLA, self.INS, self.P1, self.P2, self.Lc = apdu[:5]
self.Le = apdu[-1]
assert len(apdu) == 6 + self.Lc, "Incorrect Lc value: is %s, should be %s" % (self.Lc, len(apdu)-6)
self.data = apdu[5:-1]
CLA = _make_byte_property("CLA"); cla = CLA
INS = _make_byte_property("INS"); ins = INS
P1 = _make_byte_property("P1"); p1 = P1
P2 = _make_byte_property("P2"); p2 = P2
Lc = _make_byte_property("Lc"); lc = Lc
Le = _make_byte_property("Le"); le = Le
class R_APDU(APDU):
"Class for a response APDU"
def _getsw(self): return chr(self._sw1) + chr(self._sw2)
def _getsw(self): return chr(self.SW1) + chr(self.SW2)
def _setsw(self, value):
if len(value) != 2:
raise ValueError, "SW must be exactly two bytes"
self.sw1 = value[0]
self.sw2 = value[1]
self.SW1 = value[0]
self.SW2 = value[1]
SW = property(_getsw, _setsw, None,
"The Status Word of this response APDU")
sw = SW
SW1 = _make_byte_property("SW1"); sw1 = SW1
SW2 = _make_byte_property("SW2"); sw2 = SW2
def parse(self, apdu):
"Parse a full response APDU and assign the values to our object, overwriting whatever there was."
self.sw = apdu[-2:]
self.SW = apdu[-2:]
self.data = apdu[:-2]
_make_byte_properties(C_APDU, ("SW1", "SW2") )
class TPDU:
"Base class for TPDUs"
@ -462,9 +465,6 @@ if __name__ == "__main__":
#parse_status(_unformat_hexdump(response)[:-2])
print C_APDU((1,2,3), cla=0x23, data="hallo")
print C_APDU(1,2,3,4,2,4,6)
print C_APDU(1,2,3,4,2,4,6,0)
c = C_APDU()
c.cla = 'a'
print "\n",c.cla