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
|
#
# SNMPv2c message syntax
#
# ASN.1 source from:
# http://www.ietf.org/rfc/rfc1902.txt
#
from pyasn1.type import univ, namedtype, namedval, tag, constraint
class Integer(univ.Integer):
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
-2147483648, 2147483647
)
class Integer32(univ.Integer):
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
-2147483648, 2147483647
)
class OctetString(univ.OctetString):
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueSizeConstraint(
0, 65535
)
class IpAddress(univ.OctetString):
tagSet = univ.OctetString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x00)
)
subtypeSpec = univ.OctetString.subtypeSpec+constraint.ValueSizeConstraint(
4, 4
)
class Counter32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x01)
)
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
0, 4294967295
)
class Gauge32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x02)
)
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
0, 4294967295
)
class Unsigned32(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x02)
)
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
0, 4294967295
)
class TimeTicks(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x03)
)
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
0, 4294967295
)
class Opaque(univ.OctetString):
tagSet = univ.OctetString.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x04)
)
class Counter64(univ.Integer):
tagSet = univ.Integer.tagSet.tagImplicitly(
tag.Tag(tag.tagClassApplication, tag.tagFormatSimple, 0x06)
)
subtypeSpec = univ.Integer.subtypeSpec+constraint.ValueRangeConstraint(
0, 18446744073709551615
)
class Bits(univ.OctetString): pass
class ObjectName(univ.ObjectIdentifier): pass
class SimpleSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('integer-value', Integer()),
namedtype.NamedType('string-value', OctetString()),
namedtype.NamedType('objectID-value', univ.ObjectIdentifier())
)
class ApplicationSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('ipAddress-value', IpAddress()),
namedtype.NamedType('counter-value', Counter32()),
namedtype.NamedType('timeticks-value', TimeTicks()),
namedtype.NamedType('arbitrary-value', Opaque()),
namedtype.NamedType('big-counter-value', Counter64()),
# This conflicts with Counter32
# namedtype.NamedType('unsigned-integer-value', Unsigned32()),
namedtype.NamedType('gauge32-value', Gauge32())
) # BITS misplaced?
class ObjectSyntax(univ.Choice):
componentType = namedtype.NamedTypes(
namedtype.NamedType('simple', SimpleSyntax()),
namedtype.NamedType('application-wide', ApplicationSyntax())
)
|
