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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
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, py27plus, six
if 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(object):
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 not 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(object):
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 six.ensure_text(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 six.ensure_text(buf.read_all())
class ASN1_Object(object):
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 "<Timezone: %s>" % 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(object):
_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], Optional[int], Optional[ASN1_TIME]) -> 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 six.ensure_text(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
|