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
|
# $Id: testsnmp.rb 231 2006-12-21 15:09:29Z blackhedd $
require 'common'
require 'net/snmp'
class TestSnmp < Test::Unit::TestCase
SnmpGetRequest = "0'\002\001\000\004\006public\240\032\002\002?*\002\001\000\002\001\0000\0160\f\006\b+\006\001\002\001\001\001\000\005\000"
SnmpGetResponse = "0+\002\001\000\004\006public\242\036\002\002'\017\002\001\000\002\001\0000\0220\020\006\b+\006\001\002\001\001\001\000\004\004test"
SnmpGetRequestXXX = "0'\002\001\000\004\006xxxxxx\240\032\002\002?*\002\001\000\002\001\0000\0160\f\006\b+\006\001\002\001\001\001\000\005\000"
def test_invalid_packet
data = "xxxx"
assert_raise(Net::BER::BerError) {
ary = data.read_ber(Net::SNMP::AsnSyntax)
}
end
# The method String#read_ber! added by Net::BER consumes a well-formed BER
# object from the head of a string. If it doesn't find a complete,
# well-formed BER object, it returns nil and leaves the string unchanged.
# If it finds an object, it returns the object and removes it from the
# head of the string. This is good for handling partially-received data
# streams, such as from network connections.
def _test_consume_string
data = "xxx"
assert_equal(nil, data.read_ber!)
assert_equal("xxx", data)
data = SnmpGetRequest + "!!!"
ary = data.read_ber!(Net::SNMP::AsnSyntax)
assert_equal("!!!", data)
assert ary.is_a?(Array)
assert ary.is_a?(Net::BER::BerIdentifiedArray)
end
def test_weird_packet
assert_raise(Net::SnmpPdu::Error) {
Net::SnmpPdu.parse("aaaaaaaaaaaaaa")
}
end
def test_get_request
data = SnmpGetRequest.dup
pkt = data.read_ber(Net::SNMP::AsnSyntax)
assert pkt.is_a?(Net::BER::BerIdentifiedArray)
assert_equal(48, pkt.ber_identifier) # Constructed [0], signifies GetRequest
pdu = Net::SnmpPdu.parse(pkt)
assert_equal(:get_request, pdu.pdu_type)
assert_equal(16170, pdu.request_id) # whatever was in the test data. 16170 is not magic.
assert_equal([[[1, 3, 6, 1, 2, 1, 1, 1, 0], nil]], pdu.variables)
assert_equal(pdu.to_ber_string, SnmpGetRequest)
end
def test_empty_pdu
pdu = Net::SnmpPdu.new
assert_raise(Net::SnmpPdu::Error) { pdu.to_ber_string }
end
def test_malformations
pdu = Net::SnmpPdu.new
pdu.version = 0
pdu.version = 2
assert_raise(Net::SnmpPdu::Error) { pdu.version = 100 }
pdu.pdu_type = :get_request
pdu.pdu_type = :get_next_request
pdu.pdu_type = :get_response
pdu.pdu_type = :set_request
pdu.pdu_type = :trap
assert_raise(Net::SnmpPdu::Error) { pdu.pdu_type = :something_else }
end
def test_make_response
pdu = Net::SnmpPdu.new
pdu.version = 0
pdu.community = "public"
pdu.pdu_type = :get_response
pdu.request_id = 9999
pdu.error_status = 0
pdu.error_index = 0
pdu.add_variable_binding [1, 3, 6, 1, 2, 1, 1, 1, 0], "test"
assert_equal(SnmpGetResponse, pdu.to_ber_string)
end
def test_make_bad_response
pdu = Net::SnmpPdu.new
assert_raise(Net::SnmpPdu::Error) {pdu.to_ber_string}
pdu.pdu_type = :get_response
pdu.request_id = 999
pdu.to_ber_string
# Not specifying variables doesn't create an error. (Maybe it should?)
end
def test_snmp_integers
c32 = Net::SNMP::Counter32.new(100)
assert_equal("A\001d", c32.to_ber)
g32 = Net::SNMP::Gauge32.new(100)
assert_equal("B\001d", g32.to_ber)
t32 = Net::SNMP::TimeTicks32.new(100)
assert_equal("C\001d", t32.to_ber)
end
def test_community
data = SnmpGetRequestXXX.dup
ary = data.read_ber(Net::SNMP::AsnSyntax)
pdu = Net::SnmpPdu.parse(ary)
assert_equal("xxxxxx", pdu.community)
end
end
|
