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filesystem: pass total_len to construct of when encoding file contents

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In our construct models we frequently use a context parameter "total_len",
we also pass this parameter to construct when we decode files, but we
do not pass it when we generate files. This is a problem, because when
total_len is used in the construct model, this parameter must be known
also when decoding the file.

Let's make sure that the total_len is properly determined and and passed
to construct (via pyosmocom).

Related: OS#5714
Change-Id: I1b7a51594fbc5d9fe01132c39354a2fa88d53f9b
This commit is contained in:
Philipp Maier
2024-09-17 18:28:43 +02:00
parent 78c22a7d63
commit efddffe015
9 changed files with 348 additions and 41 deletions
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111
pySim/filesystem.py
View File

@@ -743,7 +743,26 @@ class TransparentEF(CardEF):
return t.to_dict() return t.to_dict()
return {'raw': raw_bin_data.hex()} return {'raw': raw_bin_data.hex()}
def encode_bin(self, abstract_data: dict) -> bytearray: def __get_size(self, total_len: Optional[int] = None) -> Optional[int]:
"""Get the size (total length) of the file"""
# Caller has provided the actual total length of the file, this should be the default case
if total_len is not None:
return total_len
if self.size is None:
return None
# Alternatively use the recommended size from the specification
if self.size[1] is not None:
return self.size[1]
# In case no recommended size is specified, use the minimum size
if self.size[0] is not None:
return self.size[0]
return None
def encode_bin(self, abstract_data: dict, total_len: Optional[int] = None) -> bytearray:
"""Encode abstract representation into raw (binary) data. """Encode abstract representation into raw (binary) data.
A derived class would typically provide an _encode_bin() or _encode_hex() method A derived class would typically provide an _encode_bin() or _encode_hex() method
@@ -752,17 +771,18 @@ class TransparentEF(CardEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
total_len : expected total length of the encoded data (file size)
Returns: Returns:
binary encoded data binary encoded data
""" """
method = getattr(self, '_encode_bin', None) method = getattr(self, '_encode_bin', None)
if callable(method): if callable(method):
return method(abstract_data) return method(abstract_data, total_len = self.__get_size(total_len))
method = getattr(self, '_encode_hex', None) method = getattr(self, '_encode_hex', None)
if callable(method): if callable(method):
return h2b(method(abstract_data)) return h2b(method(abstract_data, total_len = self.__get_size(total_len)))
if self._construct: if self._construct:
return build_construct(self._construct, abstract_data) return build_construct(self._construct, abstract_data, {'total_len' : self.__get_size(total_len)})
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -770,7 +790,7 @@ class TransparentEF(CardEF):
raise NotImplementedError( raise NotImplementedError(
"%s encoder not yet implemented. Patches welcome." % self) "%s encoder not yet implemented. Patches welcome." % self)
def encode_hex(self, abstract_data: dict) -> str: def encode_hex(self, abstract_data: dict, total_len: Optional[int] = None) -> str:
"""Encode abstract representation into raw (hex string) data. """Encode abstract representation into raw (hex string) data.
A derived class would typically provide an _encode_bin() or _encode_hex() method A derived class would typically provide an _encode_bin() or _encode_hex() method
@@ -779,18 +799,19 @@ class TransparentEF(CardEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
total_len : expected total length of the encoded data (file size)
Returns: Returns:
hex string encoded data hex string encoded data
""" """
method = getattr(self, '_encode_hex', None) method = getattr(self, '_encode_hex', None)
if callable(method): if callable(method):
return method(abstract_data) return method(abstract_data, total_len = self.__get_size(total_len))
method = getattr(self, '_encode_bin', None) method = getattr(self, '_encode_bin', None)
if callable(method): if callable(method):
raw_bin_data = method(abstract_data) raw_bin_data = method(abstract_data, total_len = self.__get_size(total_len))
return b2h(raw_bin_data) return b2h(raw_bin_data)
if self._construct: if self._construct:
return b2h(build_construct(self._construct, abstract_data)) return b2h(build_construct(self._construct, abstract_data, {'total_len':self.__get_size(total_len)}))
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -1030,7 +1051,26 @@ class LinFixedEF(CardEF):
return t.to_dict() return t.to_dict()
return {'raw': raw_hex_data} return {'raw': raw_hex_data}
def encode_record_hex(self, abstract_data: dict, record_nr: int) -> str: def __get_rec_len(self, total_len: Optional[int] = None) -> Optional[int]:
"""Get the length (total length) of the file record"""
# Caller has provided the actual total length of the record, this should be the default case
if total_len is not None:
return total_len
if self.rec_len is None:
return None
# Alternatively use the recommended length from the specification
if self.rec_len[1] is not None:
return self.rec_len[1]
# In case no recommended length is specified, use the minimum length
if self.rec_len[0] is not None:
return self.rec_len[0]
return None
def encode_record_hex(self, abstract_data: dict, record_nr: int, total_len: Optional[int] = None) -> str:
"""Encode abstract representation into raw (hex string) data. """Encode abstract representation into raw (hex string) data.
A derived class would typically provide an _encode_record_bin() or _encode_record_hex() A derived class would typically provide an _encode_record_bin() or _encode_record_hex()
@@ -1040,18 +1080,19 @@ class LinFixedEF(CardEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
record_nr : record number (1 for first record, ...) record_nr : record number (1 for first record, ...)
total_len : expected total length of the encoded data (record length)
Returns: Returns:
hex string encoded data hex string encoded data
""" """
method = getattr(self, '_encode_record_hex', None) method = getattr(self, '_encode_record_hex', None)
if callable(method): if callable(method):
return method(abstract_data, record_nr=record_nr) return method(abstract_data, record_nr=record_nr, total_len = self.__get_rec_len(total_len))
method = getattr(self, '_encode_record_bin', None) method = getattr(self, '_encode_record_bin', None)
if callable(method): if callable(method):
raw_bin_data = method(abstract_data, record_nr=record_nr) raw_bin_data = method(abstract_data, record_nr=record_nr, total_len = self.__get_rec_len(total_len))
return b2h(raw_bin_data) return b2h(raw_bin_data)
if self._construct: if self._construct:
return b2h(build_construct(self._construct, abstract_data)) return b2h(build_construct(self._construct, abstract_data, {'total_len':self.__get_rec_len(total_len)}))
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -1059,7 +1100,7 @@ class LinFixedEF(CardEF):
raise NotImplementedError( raise NotImplementedError(
"%s encoder not yet implemented. Patches welcome." % self) "%s encoder not yet implemented. Patches welcome." % self)
def encode_record_bin(self, abstract_data: dict, record_nr : int) -> bytearray: def encode_record_bin(self, abstract_data: dict, record_nr : int, total_len: Optional[int] = None) -> bytearray:
"""Encode abstract representation into raw (binary) data. """Encode abstract representation into raw (binary) data.
A derived class would typically provide an _encode_record_bin() or _encode_record_hex() A derived class would typically provide an _encode_record_bin() or _encode_record_hex()
@@ -1069,17 +1110,18 @@ class LinFixedEF(CardEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
record_nr : record number (1 for first record, ...) record_nr : record number (1 for first record, ...)
total_len : expected total length of the encoded data (record length)
Returns: Returns:
binary encoded data binary encoded data
""" """
method = getattr(self, '_encode_record_bin', None) method = getattr(self, '_encode_record_bin', None)
if callable(method): if callable(method):
return method(abstract_data, record_nr=record_nr) return method(abstract_data, record_nr=record_nr, total_len = self.__get_rec_len(total_len))
method = getattr(self, '_encode_record_hex', None) method = getattr(self, '_encode_record_hex', None)
if callable(method): if callable(method):
return h2b(method(abstract_data, record_nr=record_nr)) return h2b(method(abstract_data, record_nr=record_nr, total_len = self.__get_rec_len(total_len)))
if self._construct: if self._construct:
return build_construct(self._construct, abstract_data) return build_construct(self._construct, abstract_data, {'total_len':self.__get_rec_len(total_len)})
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -1224,7 +1266,20 @@ class TransRecEF(TransparentEF):
return t.to_dict() return t.to_dict()
return {'raw': raw_hex_data} return {'raw': raw_hex_data}
def encode_record_hex(self, abstract_data: dict) -> str: def __get_rec_len(self, total_len: Optional[int] = None) -> Optional[int]:
"""Get the length (total length) of the file record"""
# Caller has provided the actual total length of the record, this should be the default case
if total_len is not None:
return total_len
# Alternatively use the record length from the specification
if self.rec_len:
return self.rec_len
return None
def encode_record_hex(self, abstract_data: dict, total_len: Optional[int] = None) -> str:
"""Encode abstract representation into raw (hex string) data. """Encode abstract representation into raw (hex string) data.
A derived class would typically provide an _encode_record_bin() or _encode_record_hex() A derived class would typically provide an _encode_record_bin() or _encode_record_hex()
@@ -1233,17 +1288,19 @@ class TransRecEF(TransparentEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
total_len : expected total length of the encoded data (record length)
Returns: Returns:
hex string encoded data hex string encoded data
""" """
method = getattr(self, '_encode_record_hex', None) method = getattr(self, '_encode_record_hex', None)
if callable(method): if callable(method):
return method(abstract_data) return method(abstract_data, total_len = self.__get_rec_len(total_len))
method = getattr(self, '_encode_record_bin', None) method = getattr(self, '_encode_record_bin', None)
if callable(method): if callable(method):
return b2h(method(abstract_data)) return b2h(method(abstract_data, total_len = self.__get_rec_len(total_len)))
if self._construct: if self._construct:
return b2h(filter_dict(build_construct(self._construct, abstract_data))) return b2h(filter_dict(build_construct(self._construct, abstract_data,
{'total_len':self.__get_rec_len(total_len)})))
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -1251,7 +1308,7 @@ class TransRecEF(TransparentEF):
raise NotImplementedError( raise NotImplementedError(
"%s encoder not yet implemented. Patches welcome." % self) "%s encoder not yet implemented. Patches welcome." % self)
def encode_record_bin(self, abstract_data: dict) -> bytearray: def encode_record_bin(self, abstract_data: dict, total_len: Optional[int] = None) -> bytearray:
"""Encode abstract representation into raw (binary) data. """Encode abstract representation into raw (binary) data.
A derived class would typically provide an _encode_record_bin() or _encode_record_hex() A derived class would typically provide an _encode_record_bin() or _encode_record_hex()
@@ -1260,17 +1317,19 @@ class TransRecEF(TransparentEF):
Args: Args:
abstract_data : dict representing the decoded data abstract_data : dict representing the decoded data
total_len : expected total length of the encoded data (record length)
Returns: Returns:
binary encoded data binary encoded data
""" """
method = getattr(self, '_encode_record_bin', None) method = getattr(self, '_encode_record_bin', None)
if callable(method): if callable(method):
return method(abstract_data) return method(abstract_data, total_len = self.__get_rec_len(total_len))
method = getattr(self, '_encode_record_hex', None) method = getattr(self, '_encode_record_hex', None)
if callable(method): if callable(method):
return h2b(method(abstract_data)) return h2b(method(abstract_data, total_len = self.__get_rec_len(total_len)))
if self._construct: if self._construct:
return filter_dict(build_construct(self._construct, abstract_data)) return filter_dict(build_construct(self._construct, abstract_data,
{'total_len':self.__get_rec_len(total_len)}))
if self._tlv: if self._tlv:
t = self._tlv() if inspect.isclass(self._tlv) else self._tlv t = self._tlv() if inspect.isclass(self._tlv) else self._tlv
t.from_dict(abstract_data) t.from_dict(abstract_data)
@@ -1283,8 +1342,8 @@ class TransRecEF(TransparentEF):
for i in range(0, len(raw_bin_data), self.rec_len)] for i in range(0, len(raw_bin_data), self.rec_len)]
return [self.decode_record_bin(x) for x in chunks] return [self.decode_record_bin(x) for x in chunks]
def _encode_bin(self, abstract_data) -> bytes: def _encode_bin(self, abstract_data, **kwargs) -> bytes:
chunks = [self.encode_record_bin(x) for x in abstract_data] chunks = [self.encode_record_bin(x, total_len = kwargs.get('total_len', None)) for x in abstract_data]
# FIXME: pad to file size # FIXME: pad to file size
return b''.join(chunks) return b''.join(chunks)

2
pySim/gsm_r.py
View File

@@ -290,7 +290,7 @@ class EF_Predefined(LinFixedEF):
else: else:
return parse_construct(self.construct_others, raw_bin_data) return parse_construct(self.construct_others, raw_bin_data)
def _encode_record_bin(self, abstract_data : dict, record_nr : int) -> bytearray: def _encode_record_bin(self, abstract_data : dict, record_nr : int, **kwargs) -> bytearray:
r = None r = None
if record_nr == 1: if record_nr == 1:
r = self.construct_first.build(abstract_data) r = self.construct_first.build(abstract_data)

4
pySim/runtime.py
View File

@@ -524,7 +524,7 @@ class RuntimeLchan:
Args: Args:
data : abstract data which is to be encoded and written data : abstract data which is to be encoded and written
""" """
data_hex = self.selected_file.encode_hex(data) data_hex = self.selected_file.encode_hex(data, self.selected_file_size())
return self.update_binary(data_hex) return self.update_binary(data_hex)
def read_record(self, rec_nr: int = 0): def read_record(self, rec_nr: int = 0):
@@ -574,7 +574,7 @@ class RuntimeLchan:
rec_nr : Record number to read rec_nr : Record number to read
data_hex : Abstract data to be written data_hex : Abstract data to be written
""" """
data_hex = self.selected_file.encode_record_hex(data, rec_nr) data_hex = self.selected_file.encode_record_hex(data, rec_nr, self.selected_file_record_len())
return self.update_record(rec_nr, data_hex) return self.update_record(rec_nr, data_hex)
def retrieve_data(self, tag: int = 0): def retrieve_data(self, tag: int = 0):

2
pySim/sysmocom_sja2.py
View File

@@ -252,7 +252,7 @@ class EF_USIM_AUTH_KEY(TransparentEF):
else: else:
return parse_construct(self._construct, raw_bin_data) return parse_construct(self._construct, raw_bin_data)
def _encode_bin(self, abstract_data: dict) -> bytearray: def _encode_bin(self, abstract_data: dict, **kwargs) -> bytearray:
if abstract_data['cfg']['algorithm'] == 'tuak': if abstract_data['cfg']['algorithm'] == 'tuak':
return build_construct(self._constr_tuak, abstract_data) return build_construct(self._constr_tuak, abstract_data)
else: else:

6
pySim/ts_31_102.py
View File

@@ -344,7 +344,7 @@ class EF_SUCI_Calc_Info(TransparentEF):
out.append({k: v}) out.append({k: v})
return out return out
def _encode_hex(self, in_json): def _encode_hex(self, in_json, **kwargs):
out_bytes = self._encode_prot_scheme_id_list( out_bytes = self._encode_prot_scheme_id_list(
in_json['prot_scheme_id_list']) in_json['prot_scheme_id_list'])
d = self._expand_pubkey_list(in_json['hnet_pubkey_list']) d = self._expand_pubkey_list(in_json['hnet_pubkey_list'])
@@ -396,8 +396,8 @@ class EF_SUCI_Calc_Info(TransparentEF):
'hnet_pubkey_list': hnet_pubkey_list 'hnet_pubkey_list': hnet_pubkey_list
} }
def _encode_bin(self, in_json): def _encode_bin(self, in_json, **kwargs):
return h2b(self._encode_hex(in_json)) return h2b(self._encode_hex(in_json, **kwargs))
class EF_LI(TransRecEF): class EF_LI(TransRecEF):

2
pySim/ts_31_102_telecom.py
View File

@@ -59,7 +59,7 @@ class EF_UServiceTable(TransparentEF):
ret[service_nr]['description'] = self.table[service_nr] ret[service_nr]['description'] = self.table[service_nr]
return ret return ret
def _encode_bin(self, in_json): def _encode_bin(self, in_json, **kwargs):
# compute the required binary size # compute the required binary size
bin_len = 0 bin_len = 0
for srv in in_json.keys(): for srv in in_json.keys():

6
pySim/ts_51_011.py
View File

@@ -358,7 +358,7 @@ class EF_IMSI(TransparentEF):
def _decode_hex(self, raw_hex): def _decode_hex(self, raw_hex):
return {'imsi': dec_imsi(raw_hex)} return {'imsi': dec_imsi(raw_hex)}
def _encode_hex(self, abstract): def _encode_hex(self, abstract, **kwargs):
return enc_imsi(abstract['imsi']) return enc_imsi(abstract['imsi'])
@with_default_category('File-Specific Commands') @with_default_category('File-Specific Commands')
@@ -446,7 +446,7 @@ class EF_ServiceTable(TransparentEF):
} }
return ret return ret
def _encode_bin(self, in_json): def _encode_bin(self, in_json, **kwargs):
# compute the required binary size # compute the required binary size
bin_len = 0 bin_len = 0
for srv in in_json.keys(): for srv in in_json.keys():
@@ -969,7 +969,7 @@ class EF_ICCID(TransparentEF):
def _decode_hex(self, raw_hex): def _decode_hex(self, raw_hex):
return {'iccid': dec_iccid(raw_hex)} return {'iccid': dec_iccid(raw_hex)}
def _encode_hex(self, abstract): def _encode_hex(self, abstract, **kwargs):
return enc_iccid(abstract['iccid']) return enc_iccid(abstract['iccid'])
# TS 102 221 Section 13.3 / TS 31.101 Secction 13 / TS 51.011 Section 10.1.2 # TS 102 221 Section 13.3 / TS 31.101 Secction 13 / TS 51.011 Section 10.1.2

8
tests/pySim-shell_test/file_content/test_record_uicc.ok
View File

@@ -12,7 +12,7 @@
010 0123456789abcdef0123456789abcdef0123456789abcdef0123456789 010 0123456789abcdef0123456789abcdef0123456789abcdef0123456789
[ [
{ {
"alpha_id": null, "alpha_id": "",
"len_of_bcd": 7, "len_of_bcd": 7,
"ton_npi": { "ton_npi": {
"ext": true, "ext": true,
@@ -60,7 +60,7 @@
"ext4_record_id": 255 "ext4_record_id": 255
}, },
{ {
"alpha_id": null, "alpha_id": "",
"len_of_bcd": 7, "len_of_bcd": 7,
"ton_npi": { "ton_npi": {
"ext": true, "ext": true,
@@ -120,7 +120,7 @@
"ext4_record_id": 255 "ext4_record_id": 255
}, },
{ {
"alpha_id": null, "alpha_id": "",
"len_of_bcd": 7, "len_of_bcd": 7,
"ton_npi": { "ton_npi": {
"ext": true, "ext": true,
@@ -133,7 +133,7 @@
} }
] ]
{ {
"alpha_id": null, "alpha_id": "",
"len_of_bcd": 7, "len_of_bcd": 7,
"ton_npi": { "ton_npi": {
"ext": true, "ext": true,

248
tests/unittests/test_files.py
View File

@@ -30,6 +30,9 @@ import pySim.sysmocom_sja2
import pySim.gsm_r import pySim.gsm_r
import pySim.cdma_ruim import pySim.cdma_ruim
from construct import Int8ub, Struct, Padding, this
from osmocom.tlv import BER_TLV_IE
def get_qualified_name(c): def get_qualified_name(c):
"""return the qualified (by module) name of a class.""" """return the qualified (by module) name of a class."""
return "%s.%s" % (c.__module__, c.__name__) return "%s.%s" % (c.__module__, c.__name__)
@@ -288,6 +291,251 @@ class TransparentEF_Test(unittest.TestCase):
re_dec = inst.decode_hex(encoded) re_dec = inst.decode_hex(encoded)
self.assertEqual(decoded, re_dec) self.assertEqual(decoded, re_dec)
class filesystem_enc_dec_test(unittest.TestCase):
""" The following set of tests is to verify the code paths in filesystem.py. There are several methods to encode
or decode a file. Depending on which methods (encode_hex, decode_hex, etc.) or structs (_construct, _tlv) are
define in the related file object, the encoding/decoding will take a different code path. In this test we will
try out all of the different encoding/decoding variants by defining one test file for each variant. Then we will
run an encoding/decoding cycle on each of the test files.
The test files will also include a padding that is dependent on the total_len keyword argument that is passed
via the construct context or via **kwargs in case the hand written encoding methods (encode_hex, encode_record_hex,
etc.) are used. This will ensure that total_len is passed correctly in all possible variants.
"""
def test_encode_TransparentEF(self):
class TransparentEF_construct(TransparentEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2),
desc='dummy TransparentEF file to test encoding/decoding via _construct'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
self._construct = Struct('test'/Int8ub, Padding(this._.total_len-1))
class TransparentEF_encode_hex(TransparentEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2),
desc='dummy TransparentEF file to test manual encoding/decoding via _encode/decode_hex'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
def _encode_hex(self, in_json, **kwargs):
return "%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1)
def _decode_hex(self, raw_hex):
return {'test': int(raw_hex[0:2],16)}
class TransparentEF_encode_bin(TransparentEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2),
desc='dummy TransparentEF file to test manual encoding/decoding via _encode/decode_bin'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
def _encode_bin(self, in_json, **kwargs):
return h2b("%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1))
def _decode_bin(self, raw_bin_data: bytearray):
return {'test': int(b2h(raw_bin_data[0:1]),16)}
class TransparentEF_tlv(TransparentEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(1, 1),
desc='dummy TransparentEF file to test encoding/decoding via _tlv'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
self._tlv = TransparentEF_tlv.TestTlv
class TransparentEF_raw(TransparentEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(1, 1),
desc='dummy TransparentEF file to test raw encoding/decoding'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
def do_encdec_test(file):
res = file.encode_hex({'test':0x41})
self.assertEqual(res,hexstr("4100"))
res = file.encode_bin({'test':0x41})
self.assertEqual(b2h(res),hexstr("4100"))
res = file.encode_hex({'test':0x41}, total_len=3)
self.assertEqual(res,hexstr("410000"))
res = file.encode_bin({'test':0x41}, total_len=3)
self.assertEqual(b2h(res),hexstr("410000"))
res = file.decode_hex("4100")
self.assertEqual(res,{'test':0x41})
res = file.decode_bin(b'\x41\x01')
self.assertEqual(res,{'test':0x41})
def do_encdec_test_tlv(file):
res = file.encode_hex({'test_tlv':0x41})
self.assertEqual(res,hexstr("810141"))
res = file.encode_bin({'test_tlv':0x41})
self.assertEqual(b2h(res),hexstr("810141"))
res = file.decode_hex(hexstr("810141"))
self.assertEqual(res,{'test_tlv':0x41})
res = file.decode_bin(h2b("810141"))
self.assertEqual(res,{'test_tlv':0x41})
def do_encdec_test_raw(file):
res = file.decode_hex("41")
self.assertEqual(res,{'raw':'41'})
res = file.decode_bin(b'\x41')
self.assertEqual(res,{'raw':'41'})
do_encdec_test(TransparentEF_construct())
do_encdec_test(TransparentEF_encode_hex())
do_encdec_test(TransparentEF_encode_bin())
do_encdec_test_tlv(TransparentEF_tlv())
do_encdec_test_raw(TransparentEF_raw())
def test_encode_LinFixedEF(self):
class LinFixedEF_construct(LinFixedEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY',
desc='dummy LinFixedEF file to test encoding/decoding via _construct', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, rec_len=(2, 2), **kwargs)
self._construct = Struct('test'/Int8ub, Padding(this._.total_len-1))
class LinFixedEF_encode_hex(LinFixedEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY',
desc='dummy LinFixedEF file to test manual encoding/decoding via _encode/decode_hex', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, rec_len=(2, 2), **kwargs)
def _encode_record_hex(self, in_json, **kwargs):
return "%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1)
def _decode_record_hex(self, in_hex, **kwargs):
return {'test': int(in_hex[0:2],16)}
class LinFixedEF_encode_bin(LinFixedEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY',
desc='dummy LinFixedEF file to test manual encoding/decoding via _encode/decode_bin', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, rec_len=(2, 2), **kwargs)
def _encode_record_bin(self, in_json, **kwargs):
return h2b("%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1))
def _decode_record_bin(self, in_bin, **kwargs):
return {'test': int(b2h(in_bin[0:1]),16)}
class LinFixedEF_tlv(LinFixedEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY',
desc='dummy LinFixedEF file to test encoding/decoding via _tlv', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, rec_len=(1, 1), **kwargs)
self._tlv = LinFixedEF_tlv.TestTlv
class LinFixedEF_raw(LinFixedEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY',
desc='dummy LinFixedEF file to test raw encoding/decoding', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, rec_len=(1, 1), **kwargs)
def do_encdec_test(file):
res = file.encode_record_hex({'test':0x41}, 1)
self.assertEqual(res,hexstr("4100"))
res = file.encode_record_bin({'test':0x41}, 1)
self.assertEqual(b2h(res),hexstr("4100"))
res = file.encode_record_hex({'test':0x41}, 1, total_len=3)
self.assertEqual(res,hexstr("410000"))
res = file.encode_record_bin({'test':0x41}, 1, total_len=3)
self.assertEqual(b2h(res),hexstr("410000"))
res = file.decode_record_hex("4100", 1)
self.assertEqual(res,{'test':0x41})
res = file.decode_record_bin(b'\x41\x00', 1)
self.assertEqual(res,{'test':0x41})
def do_encdec_test_tlv(file):
res = file.encode_record_hex({'test_tlv':0x41}, 1)
self.assertEqual(res,hexstr("810141"))
res = file.encode_record_bin({'test_tlv':0x41}, 1)
self.assertEqual(b2h(res),hexstr("810141"))
res = file.decode_record_hex(hexstr("810141"), 1)
self.assertEqual(res,{'test_tlv':0x41})
res = file.decode_record_bin(h2b("810141"), 1)
self.assertEqual(res,{'test_tlv':0x41})
def do_encdec_test_raw(file):
res = file.decode_record_hex("41", 1)
self.assertEqual(res,{'raw':'41'})
res = file.decode_record_bin(b'\x41', 1)
self.assertEqual(res,{'raw':'41'})
do_encdec_test(LinFixedEF_construct())
do_encdec_test(LinFixedEF_encode_hex())
do_encdec_test(LinFixedEF_encode_bin())
do_encdec_test_tlv(LinFixedEF_tlv())
do_encdec_test_raw(LinFixedEF_raw())
def test_encode_TransRecEF(self):
class TransRecEF_construct(TransRecEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2), rec_len=2,
desc='dummy TransRecEF file to test encoding/decoding via _construct', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
self._construct = Struct('test'/Int8ub, Padding(this._.total_len-1))
class TransRecEF_encode_hex(TransRecEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2), rec_len=2,
desc='dummy TransRecEF file to test manual encoding/decoding via _encode/decode_hex', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
def _encode_record_hex(self, in_json, **kwargs):
return "%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1)
def _decode_record_hex(self, in_hex, **kwargs):
return {'test': int(in_hex[0:2],16)}
class TransRecEF_encode_bin(TransRecEF):
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(2, 2), rec_len=2,
desc='dummy TransRecEF file to test manual encoding/decoding via _encode/decode_bin', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
def _encode_record_bin(self, in_json, **kwargs):
return h2b("%02x" % in_json['test'] + "00" * (kwargs.get('total_len') -1))
def _decode_record_bin(self, in_bin, **kwargs):
return {'test': int(b2h(in_bin[0:1]),16)}
class TransRecEF_tlv(TransRecEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(1, 1), rec_len=1,
desc='dummy TransRecEF file to test encoding/decoding via _tlv', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
self._tlv = TransRecEF_tlv.TestTlv
class TransRecEF_raw(TransRecEF):
class TestTlv(BER_TLV_IE, tag=0x81):
_construct = Int8ub
def __init__(self, fid='0000', sfid=None, name='EF.DUMMY', size=(1, 1), rec_len=1,
desc='dummy TransRecEF file to test raw encoding/decoding', **kwargs):
super().__init__(fid=fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
def do_encdec_test(file):
res = file.encode_record_hex({'test':0x41})
self.assertEqual(res,hexstr("4100"))
res = file.encode_record_bin({'test':0x41})
self.assertEqual(b2h(res),hexstr("4100"))
res = file.encode_record_hex({'test':0x41}, total_len=3)
self.assertEqual(res,hexstr("410000"))
res = file.encode_record_bin({'test':0x41}, total_len=3)
self.assertEqual(b2h(res),hexstr("410000"))
res = file.decode_record_hex("4100")
self.assertEqual(res,{'test':0x41})
res = file.decode_record_bin(b'\x41\x00')
self.assertEqual(res,{'test':0x41})
def do_encdec_test_tlv(file):
res = file.encode_record_hex({'test_tlv':0x41})
self.assertEqual(res,hexstr("810141"))
res = file.encode_record_bin({'test_tlv':0x41})
self.assertEqual(b2h(res),hexstr("810141"))
res = file.decode_record_hex(hexstr("810141"))
self.assertEqual(res,{'test_tlv':0x41})
res = file.decode_record_bin(h2b("810141"))
self.assertEqual(res,{'test_tlv':0x41})
def do_encdec_test_raw(file):
res = file.decode_record_hex("41")
self.assertEqual(res,{'raw':'41'})
res = file.decode_record_bin(b'\x41')
self.assertEqual(res,{'raw':'41'})
do_encdec_test(TransRecEF_construct())
do_encdec_test(TransRecEF_encode_hex())
do_encdec_test(TransRecEF_encode_bin())
do_encdec_test_tlv(TransRecEF_tlv())
do_encdec_test_raw(TransRecEF_raw())
if __name__ == '__main__': if __name__ == '__main__':
logger = logging.getLogger() logger = logging.getLogger()
logger.setLevel(logging.DEBUG) logger.setLevel(logging.DEBUG)