from __future__ import absolute_import """ M2Crypto wrapper for OpenSSL ASN1 API. Copyright (c) 1999-2004 Ng Pheng Siong. All rights reserved. Portions created by Open Source Applications Foundation (OSAF) are Copyright (C) 2005 OSAF. All Rights Reserved. """ import datetime import time from M2Crypto import BIO, m2, util if util.py27plus: from typing import Any, Callable, Optional, Tuple # noqa MBSTRING_FLAG = 0x1000 MBSTRING_ASC = MBSTRING_FLAG | 1 MBSTRING_BMP = MBSTRING_FLAG | 2 class ASN1_Integer: # noqa m2_asn1_integer_free = m2.asn1_integer_free def __init__(self, asn1int, _pyfree=0): # type: (ASN1_Integer, int) -> None self.asn1int = asn1int self._pyfree = _pyfree def __cmp__(self, other): # type: (ASN1_Integer) -> int if isinstance(other, ASN1_Integer): raise TypeError( "Comparisons supported only between ANS1_Integer objects") return m2.asn1_integer_cmp(self.asn1int, other.asn1int) def __del__(self): # type: () -> None if self._pyfree: self.m2_asn1_integer_free(self.asn1int) def __int__(self): # type: () -> int return m2.asn1_integer_get(self.asn1int) class ASN1_String: # noqa m2_asn1_string_free = m2.asn1_string_free def __init__(self, asn1str, _pyfree=0): # type: (ASN1_String, int) -> None self.asn1str = asn1str self._pyfree = _pyfree def __bytes__(self): # type: () -> bytes buf = BIO.MemoryBuffer() m2.asn1_string_print(buf.bio_ptr(), self.asn1str) return buf.read_all() def __str__(self): # type: () -> str return util.py3str(self.__bytes__()) def __del__(self): # type: () -> None if getattr(self, '_pyfree', 0): self.m2_asn1_string_free(self.asn1str) def _ptr(self): return self.asn1str def as_text(self, flags=0): # type: (int) -> str """output an ASN1_STRING structure according to the set flags. :param flags: determine the format of the output by using predetermined constants, see ASN1_STRING_print_ex(3) manpage for their meaning. :return: output an ASN1_STRING structure. """ buf = BIO.MemoryBuffer() m2.asn1_string_print_ex(buf.bio_ptr(), self.asn1str, flags) return util.py3str(buf.read_all()) class ASN1_Object: # noqa m2_asn1_object_free = m2.asn1_object_free def __init__(self, asn1obj, _pyfree=0): # type: (ASN1_Object, int) -> None self.asn1obj = asn1obj self._pyfree = _pyfree def __del__(self): # type: () -> None if self._pyfree: self.m2_asn1_object_free(self.asn1obj) def _ptr(self): return self.asn1obj class _UTC(datetime.tzinfo): def tzname(self, dt): # type: (Optional[datetime.datetime]) -> str return "UTC" def dst(self, dt): # type: (Optional[datetime.datetime]) -> datetime.timedelta return datetime.timedelta(0) def utcoffset(self, dt): # type: (Optional[datetime.datetime]) -> datetime.timedelta return datetime.timedelta(0) def __repr__(self): return "" % self.tzname(None) UTC = _UTC() # type: _UTC class LocalTimezone(datetime.tzinfo): """ Localtimezone from datetime manual """ def __init__(self): # type: () -> None self._stdoffset = datetime.timedelta(seconds=-time.timezone) if time.daylight: self._dstoffset = datetime.timedelta(seconds=-time.altzone) else: self._dstoffset = self._stdoffset self._dstdiff = self._dstoffset - self._stdoffset def utcoffset(self, dt): # type: (datetime.datetime) -> datetime.timedelta if self._isdst(dt): return self._dstoffset else: return self._stdoffset def dst(self, dt): # type: (datetime.datetime) -> datetime.timedelta if self._isdst(dt): return self._dstdiff else: return datetime.timedelta(0) def tzname(self, dt): # type: (datetime.datetime) -> str return time.tzname[self._isdst(dt).real] def _isdst(self, dt): # type: (datetime.datetime) -> bool tt = (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.weekday(), 0, -1) stamp = time.mktime(tt) tt = time.localtime(stamp) return tt.tm_isdst > 0 class ASN1_TIME: # noqa _ssl_months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] m2_asn1_time_free = m2.asn1_time_free def __init__(self, asn1_time=None, _pyfree=0, asn1_utctime=None): # type: (Optional[ASN1_TIME], int) -> None # handle old keyword parameter if asn1_time is None: asn1_time = asn1_utctime if asn1_time is not None: assert m2.asn1_time_type_check(asn1_time), \ "'asn1_time' type error'" self.asn1_time = asn1_time self._pyfree = _pyfree else: self.asn1_time = m2.asn1_time_new() self._pyfree = 1 def __del__(self): # type: () -> None if getattr(self, '_pyfree', 0): self.m2_asn1_time_free(self.asn1_time) def __str__(self): # type: () -> str assert m2.asn1_time_type_check(self.asn1_time), \ "'asn1_time' type error'" buf = BIO.MemoryBuffer() m2.asn1_time_print(buf.bio_ptr(), self.asn1_time) return util.py3str(buf.read_all()) def _ptr(self): assert m2.asn1_time_type_check(self.asn1_time), \ "'asn1_time' type error'" return self.asn1_time def set_string(self, string): # type: (bytes) -> int """ Set time from UTC string. """ assert m2.asn1_time_type_check(self.asn1_time), \ "'asn1_time' type error'" return m2.asn1_time_set_string(self.asn1_time, string) def set_time(self, time): # type: (int) -> ASN1_TIME """ Set time from seconds since epoch (int). """ assert m2.asn1_time_type_check(self.asn1_time), \ "'asn1_time' type error'" return m2.asn1_time_set(self.asn1_time, time) def get_datetime(self): # type: () -> ASN1_TIME date = str(self) timezone = None if ' ' not in date: raise ValueError("Invalid date: %s" % date) month, rest = date.split(' ', 1) if month not in self._ssl_months: raise ValueError("Invalid date %s: Invalid month: %s" % (date, month)) if rest.endswith(' GMT'): timezone = UTC rest = rest[:-4] if '.' in rest: dt = datetime.datetime.strptime(rest, "%d %H:%M:%S.%f %Y") else: dt = datetime.datetime.strptime(rest, "%d %H:%M:%S %Y") dt = dt.replace(month=self._ssl_months.index(month) + 1) if timezone: dt = dt.replace(tzinfo=UTC) return dt def set_datetime(self, date): # type: (datetime.datetime) -> ASN1_TIME local = LocalTimezone() if date.tzinfo is None: date = date.replace(tzinfo=local) date = date.astimezone(local) return self.set_time(int(time.mktime(date.timetuple()))) ASN1_UTCTIME = ASN1_TIME