1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
# License: http://pyasn1.sf.net/license.html
#
import datetime
from pyasn1.type import univ, char, tag
from pyasn1.compat import string, dateandtime
from pyasn1 import error
__all__ = ['ObjectDescriptor', 'GeneralizedTime', 'UTCTime']
NoValue = univ.NoValue
noValue = univ.noValue
class ObjectDescriptor(char.GraphicString):
__doc__ = char.GraphicString.__doc__
#: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects
tagSet = char.GraphicString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 7)
)
# Optimization for faster codec lookup
typeId = char.GraphicString.getTypeId()
class TimeMixIn(object):
_yearsDigits = 4
_hasSubsecond = False
_optionalMinutes = False
_shortTZ = False
class FixedOffset(datetime.tzinfo):
"""Fixed offset in minutes east from UTC."""
# defaulted arguments required
# https: // docs.python.org / 2.3 / lib / datetime - tzinfo.html
def __init__(self, offset=0, name='UTC'):
self.__offset = datetime.timedelta(minutes=offset)
self.__name = name
def utcoffset(self, dt):
return self.__offset
def tzname(self, dt):
return self.__name
def dst(self, dt):
return datetime.timedelta(0)
UTC = FixedOffset()
@property
def asDateTime(self):
"""Create :py:class:`datetime.datetime` object from a |ASN.1| object.
Returns
-------
:
new instance of :py:class:`datetime.datetime` object
"""
text = str(self)
if text.endswith('Z'):
tzinfo = TimeMixIn.UTC
text = text[:-1]
elif '-' in text or '+' in text:
if '+' in text:
text, plusminus, tz = string.partition(text, '+')
else:
text, plusminus, tz = string.partition(text, '-')
if self._shortTZ and len(tz) == 2:
tz += '00'
if len(tz) != 4:
raise error.PyAsn1Error('malformed time zone offset %s' % tz)
try:
minutes = int(tz[:2]) * 60 + int(tz[2:])
if plusminus == '-':
minutes *= -1
except ValueError:
raise error.PyAsn1Error('unknown time specification %s' % self)
tzinfo = TimeMixIn.FixedOffset(minutes, '?')
else:
tzinfo = None
if '.' in text or ',' in text:
if '.' in text:
text, _, ms = string.partition(text, '.')
else:
text, _, ms = string.partition(text, ',')
try:
ms = int(ms) * 10000
except ValueError:
raise error.PyAsn1Error('bad sub-second time specification %s' % self)
else:
ms = 0
if self._optionalMinutes and len(text) - self._yearsDigits == 6:
text += '0000'
elif len(text) - self._yearsDigits == 8:
text += '00'
try:
dt = dateandtime.strptime(text, self._yearsDigits == 4 and '%Y%m%d%H%M%S' or '%y%m%d%H%M%S')
except ValueError:
raise error.PyAsn1Error('malformed datetime format %s' % self)
return dt.replace(microsecond=ms, tzinfo=tzinfo)
@classmethod
def fromDateTime(cls, dt):
"""Create |ASN.1| object from a :py:class:`datetime.datetime` object.
Parameters
----------
dt: :py:class:`datetime.datetime` object
The `datetime.datetime` object to initialize the |ASN.1| object from
Returns
-------
:
new instance of |ASN.1| value
"""
text = dt.strftime(cls._yearsDigits == 4 and '%Y%m%d%H%M%S' or '%y%m%d%H%M%S')
if cls._hasSubsecond:
text += '.%d' % (dt.microsecond // 10000)
if dt.utcoffset():
seconds = dt.utcoffset().seconds
if seconds < 0:
text += '-'
else:
text += '+'
text += '%.2d%.2d' % (seconds // 3600, seconds % 3600)
else:
text += 'Z'
return cls(text)
class GeneralizedTime(char.VisibleString, TimeMixIn):
__doc__ = char.VisibleString.__doc__
#: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects
tagSet = char.VisibleString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 24)
)
# Optimization for faster codec lookup
typeId = char.VideotexString.getTypeId()
_yearsDigits = 4
_hasSubsecond = True
_optionalMinutes = True
_shortTZ = True
class UTCTime(char.VisibleString, TimeMixIn):
__doc__ = char.VisibleString.__doc__
#: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects
tagSet = char.VisibleString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 23)
)
# Optimization for faster codec lookup
typeId = char.VideotexString.getTypeId()
_yearsDigits = 2
_hasSubsecond = False
_optionalMinutes = False
_shortTZ = False
|