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345 lines (281 loc) · 11.6 KB
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import base64
import json
import re
import threading
import zlib
from contextlib import contextmanager
from datetime import datetime
from enum import Enum, EnumType
import mt940
from .models import Holding
def mt940_to_array(data):
data = data.replace("@@", "\r\n")
data = data.replace("-0000", "+0000")
transactions = mt940.models.Transactions()
return transactions.parse(data)
def classproperty(f):
class fx:
def __init__(self, getter):
self.getter = getter
def __get__(self, obj, type=None):
return self.getter(type)
return fx(f)
def compress_datablob(magic: bytes, version: int, data: dict):
data = dict(data)
for k, v in data.items():
if k.endswith("_bin"):
if v:
data[k] = base64.b64encode(v).decode("us-ascii")
serialized = json.dumps(data).encode('utf-8')
compressed = zlib.compress(serialized, 9)
return b';'.join([magic, b'1', str(version).encode('us-ascii'), compressed])
def decompress_datablob(magic: bytes, blob: bytes, obj: object = None):
if not blob.startswith(magic):
raise ValueError("Incorrect data blob")
s = blob.split(b';', 3)
if len(s) != 4:
raise ValueError("Incorrect data blob")
if not s[1].isdigit() or not s[2].isdigit():
raise ValueError("Incorrect data blob")
encoding_version = int(s[1].decode('us-ascii'), 10)
blob_version = int(s[2].decode('us-ascii'), 10)
if encoding_version != 1:
raise ValueError("Unsupported encoding version {}".format(encoding_version))
decompressed = zlib.decompress(s[3])
data = json.loads(decompressed.decode('utf-8'))
for k, v in data.items():
if k.endswith("_bin"):
if v:
data[k] = base64.b64decode(v.encode('us-ascii'))
if obj:
setfunc = getattr(obj, "_set_data_v{}".format(blob_version), None)
if not setfunc:
raise ValueError("Unknown data blob version")
setfunc(data)
else:
return blob_version, data
class SubclassesMixin:
@classmethod
def _all_subclasses(cls):
for subcls in cls.__subclasses__():
yield from subcls._all_subclasses()
yield cls
class DocTypeMixin:
_DOC_TYPE = None
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
type_ = self._DOC_TYPE
if type_ is None:
if isinstance(getattr(self, 'type', None), type):
type_ = getattr(self, 'type')
if type_ is not None:
if not self.__doc__:
self.__doc__ = ""
name = type_.__name__
if type_.__module__ != 'builtins':
name = "{}.{}".format(type_.__module__, name)
self.__doc__ = self.__doc__ + "\n\n:type: :class:`{}`".format(name)
class FieldRenderFormatStringMixin:
_FORMAT_STRING = None
def _render_value(self, value):
retval = self._FORMAT_STRING.format(value)
self._check_value_length(retval)
return retval
class FixedLengthMixin:
_FIXED_LENGTH = [None, None, None]
_DOC_TYPE = str
def __init__(self, *args, **kwargs):
for i, a in enumerate(('length', 'min_length', 'max_length')):
kwargs[a] = self._FIXED_LENGTH[i] if len(self._FIXED_LENGTH) > i else None
super().__init__(*args, **kwargs)
class ShortReprMixin:
def __repr__(self):
return "{}{}({})".format(
"{}.".format(self.__class__.__module__),
self.__class__.__name__,
", ".join(
("{!r}".format(value) if not name.startswith("_") else "{}={!r}".format(name, value))
for (name, value) in self._repr_items
)
)
def print_nested(self, stream=None, level=0, indent=" ", prefix="", first_level_indent=True, trailer="", print_doc=True, first_line_suffix=""):
stream.write(
( (prefix + level*indent) if first_level_indent else "")
+ "{!r}{}{}\n".format(self, trailer, first_line_suffix)
)
class MT535_Miniparser:
re_identification = re.compile(r"^:35B:ISIN\s(.*)\|(.*)\|(.*)$")
re_marketprice = re.compile(r"^:90B::MRKT\/\/ACTU\/([A-Z]{3})(\d*),{1}(\d*)$")
re_pricedate = re.compile(r"^:98A::PRIC\/\/(\d*)$")
re_pieces = re.compile(r"^:93B::AGGR\/\/UNIT\/(\d*),(\d*)$")
re_totalvalue = re.compile(r"^:19A::HOLD\/\/([A-Z]{3})(\d*),{1}(\d*)$")
re_acquisitionprice = re.compile(r"^:70E::HOLD\/\/\d*STK\|2(\d*?),{1}(\d*?)\+([A-Z]{3})$")
def parse(self, lines):
retval = []
# First: Collapse multiline clauses into one clause
clauses = self.collapse_multilines(lines)
# Second: Scan sequence of clauses for financial instrument
# sections
finsegs = self.grab_financial_instrument_segments(clauses)
# Third: Extract financial instrument data
for finseg in finsegs:
isin, name, market_price, price_symbol, price_date, pieces, acquisitionprice = (None,)*7
for clause in finseg:
# identification of instrument
# e.g. ':35B:ISIN LU0635178014|/DE/ETF127|COMS.-MSCI EM.M.T.U.ETF I'
m = self.re_identification.match(clause)
if m:
isin = m.group(1)
name = m.group(3)
# current market price
# e.g. ':90B::MRKT//ACTU/EUR38,82'
m = self.re_marketprice.match(clause)
if m:
price_symbol = m.group(1)
market_price = float(m.group(2) + "." + m.group(3))
# date of market price
# e.g. ':98A::PRIC//20170428'
m = self.re_pricedate.match(clause)
if m:
price_date = datetime.strptime(m.group(1), "%Y%m%d").date()
# number of pieces
# e.g. ':93B::AGGR//UNIT/16,8211'
m = self.re_pieces.match(clause)
if m:
pieces = float(m.group(1) + "." + m.group(2))
# total value of holding
# e.g. ':19A::HOLD//EUR970,17'
m = self.re_totalvalue.match(clause)
if m:
total_value = float(m.group(2) + "." + m.group(3))
# Acquisition price
# e.g ':70E::HOLD//1STK23,968293+EUR'
m = self.re_acquisitionprice.match(clause)
if m:
acquisitionprice = float(m.group(1) + '.' + m.group(2))
# processed all clauses
retval.append(
Holding(
ISIN=isin, name=name, market_value=market_price,
value_symbol=price_symbol, valuation_date=price_date,
pieces=pieces, total_value=total_value,
acquisitionprice=acquisitionprice))
return retval
def collapse_multilines(self, lines):
clauses = []
prevline = ""
for line in lines:
if line.startswith(":"):
if prevline != "":
clauses.append(prevline)
prevline = line
elif line.startswith("-"):
# last line
clauses.append(prevline)
clauses.append(line)
else:
prevline += "|{}".format(line)
return clauses
def grab_financial_instrument_segments(self, clauses):
retval = []
stack = []
within_financial_instrument = False
for clause in clauses:
if clause.startswith(":16R:FIN"):
# start of financial instrument
within_financial_instrument = True
elif clause.startswith(":16S:FIN"):
# end of financial instrument - move stack over to
# return value
retval.append(stack)
stack = []
within_financial_instrument = False
else:
if within_financial_instrument:
stack.append(clause)
return retval
class Password(str):
protected = False
def __init__(self, value):
self.value = value
self.blocked = False
@classmethod
@contextmanager
def protect(cls):
try:
cls.protected = True
yield None
finally:
cls.protected = False
def block(self):
self.blocked = True
def __str__(self):
if self.blocked and not self.protected:
raise Exception("Refusing to use PIN after block")
return '***' if self.protected else str(self.value)
def __repr__(self):
return self.__str__().__repr__()
def __add__(self, other):
return self.__str__().__add__(other)
def replace(self, *args, **kwargs):
return self.__str__().replace(*args, **kwargs)
class RepresentableEnum(Enum):
def __repr__(self):
return "{}.{}.{}".format(self.__class__.__module__, self.__class__.__name__, self.name)
def __str__(self):
return self.value
def minimal_interactive_cli_bootstrap(client):
"""
This is something you usually implement yourself to ask your user in a nice, user-friendly way about these things.
This is mainly included to keep examples in the documentation simple and allow you to get started quickly.
"""
# Fetch available TAN mechanisms by the bank, if we don't know it already. If the client was created with cached data,
# the function is already set.
if not client.get_current_tan_mechanism():
client.fetch_tan_mechanisms()
mechanisms = list(client.get_tan_mechanisms().items())
if len(mechanisms) > 1:
print("Multiple tan mechanisms available. Which one do you prefer?")
for i, m in enumerate(mechanisms):
print(i, "Function {p.security_function}: {p.name}".format(p=m[1]))
choice = input("Choice: ").strip()
client.set_tan_mechanism(mechanisms[int(choice)][0])
if client.is_tan_media_required() and not client.selected_tan_medium:
print("We need the name of the TAN medium, let's fetch them from the bank")
m = client.get_tan_media()
if len(m[1]) == 1:
client.set_tan_medium(m[1][0])
else:
print("Multiple tan media available. Which one do you prefer?")
for i, mm in enumerate(m[1]):
print(i,
"Medium {p.tan_medium_name}: Phone no. {p.mobile_number_masked}, Last used {p.last_use}".format(
p=mm))
choice = input("Choice: ").strip()
client.set_tan_medium(m[1][int(choice)])
class LogConfiguration(threading.local):
"""Thread-local configuration object to guide log output.
reduced: Reduce verbosity of logging output by suppressing the encrypting/signature elements and outputting the payload only.
"""
def __init__(self, reduced=False):
super().__init__()
self.reduced = reduced
@staticmethod
def set(reduced=False):
"""Permanently change the log configuration for this thread."""
log_configuration.reduced = reduced
@staticmethod
@contextmanager
def changed(reduced=False):
"""Temporarily change the log configuration for this thread."""
old_reduced = log_configuration.reduced
log_configuration.set(reduced=reduced)
yield
log_configuration.set(reduced=old_reduced)
log_configuration = LogConfiguration()
try:
from enum_tools import document_enum
doc_enum = document_enum
except ImportError:
def doc_enum(an_enum: EnumType) -> EnumType:
return an_enum