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
|
require_relative 'spec_helper'
require_relative '../lib/dnsruby/resource/NXT'
require_relative '../lib/dnsruby/code_mappers'
# Tests NXT resource record. See bottom of file for sample zone file.
class TestNXT < Minitest::Test
include Dnsruby
# Get this by running the following script:
# require 'dnsruby'
# include Dnsruby
# query = Message.new('a.dnsruby.com', 'NXT')
# resolver = Resolver.new('127.0.0.1')
# response, error = resolver.query_raw(query)
# puts response.encode.inspect # to get a quoted string to be inserted in source code
EXAMPLE_NXT_RESPONSE_AS_BINARY = \
"\xC2\xE0\x84\x80\x00\x01\x00\x01\x00\x01" +
"\x00\x01\x01a\adnsruby\x03com\x00" +
"\x00\x1E\x00\x01\xC0\f\x00\x1E\x00\x01\x00\x00*0\x00\x13\x01b\adnsruby\x03com\x00" +
"@\x00\x00\n\xC0\x0E\x00\x02\x00\x01\x00\x00*0\x00\x06\x03ns1\xC0\x0E\xC0J\x00\x01\x00" +
"\x01\x00\x00*0\x00\x04\x7F\x00\x00\x01"
def test_type_val_to_string
assert_equal 'SOA', RR::NXT::NxtTypes.code_to_name(6)
assert_equal 'AXFR', RR::NXT::NxtTypes.code_to_name(252)
assert_equal 'TYPE9999', RR::NXT::NxtTypes.code_to_name(9999)
end
def test_type_name_to_code
assert_equal 6, RR::NXT::NxtTypes.name_to_code('SOA')
assert_equal 252, RR::NXT::NxtTypes.name_to_code('AXFR')
assert_equal 9999, RR::NXT::NxtTypes.name_to_code('TYPE9999')
end
def test_type_names_to_codes
strings = %w(TYPE9999 SOA AXFR)
assert_equal [9999, 6, 252], RR::NXT::NxtTypes.names_to_codes(strings)
end
def test_type_name_to_codes
assert_equal [9999, 6, 252], RR::NXT::NxtTypes.names_string_to_codes("TYPE9999 SOA AXFR")
end
def test_codes_to_names
assert_equal %w(TYPE9999 SOA AXFR), RR::NXT::NxtTypes.codes_to_names([9999, 6, 252])
end
def test_codes_to_string
assert_equal 'SOA AXFR TYPE9999', RR::NXT::NxtTypes.codes_to_string([6, 252, 9999])
end
def test_codes_to_name_sorts_by_code
assert_equal 'SOA AXFR TYPE9999', RR::NXT::NxtTypes.codes_to_string([9999, 6, 252])
end
def test_binary_string_to_codes
test_type_codes_as_code_array = [1, 6, 28, 100]
test_type_codes_as_name_array = %w(A SOA AAAA UINFO)
test_type_codes_as_binary_string = "\x10\x0\x0\x0\x0\x0\x0\x0\x0\x10\x0\x0\x42"
assert_equal(test_type_codes_as_code_array, RR::NXT::NxtTypes.binary_string_to_codes(test_type_codes_as_binary_string))
assert_equal(test_type_codes_as_name_array, RR::NXT::NxtTypes.binary_string_to_names(test_type_codes_as_binary_string))
assert_equal(test_type_codes_as_binary_string, RR::NXT::NxtTypes.codes_to_binary_string(test_type_codes_as_code_array))
end
def test_that_codes_are_in_range_1_to_127
TestUtils.assert_not_raised(ArgumentError) { RR::NXT::NxtTypes.codes_to_binary_string([1]) }
TestUtils.assert_not_raised(ArgumentError) { RR::NXT::NxtTypes.codes_to_binary_string([127]) }
assert_raises(ArgumentError) { RR::NXT::NxtTypes.codes_to_binary_string([0]) }
assert_raises(ArgumentError) { RR::NXT::NxtTypes.codes_to_binary_string([128]) }
end
def test_that_zero_bit_set_raises_error
assert_raises(ArgumentError) { RR::NXT::NxtTypes.codes_to_binary_string([]) }
end
def test_A_AAAA_NXT
assert_equal([1, 28, 30], RR::NXT::NxtTypes.names_string_to_codes('A AAAA NXT'))
assert_equal("P\x00\x00\x02", RR::NXT::NxtTypes.codes_to_binary_string([1, 28, 30]))
end
def test_type_bitmap_ctor_is_private
assert_raises(NoMethodError) { RR::NXT::TypeBitmap.new('') }
end
def test_type_bitmap_to_s
type_bitmap = RR::NXT::TypeBitmap.from_type_codes([1, 16, 30])
assert_equal('A TXT NXT', type_bitmap.to_s)
end
def test_parse_response_correctly
response = Message.decode(EXAMPLE_NXT_RESPONSE_AS_BINARY)
answer = response.answer
nxt_record = answer[0]
# Note: Although the NXT class is defined as Dnsruby::RR::NXT and not
# Dnsruby::RR::IN::NXT, the IN module (in IN.rb) creates new classes
# in the IN module for all class-insensitive resource record classes.
# When the binary record is parsed, it is a Dnsruby::RR::IN::NXT
# that is created.
assert_equal(Dnsruby::RR::IN::NXT, nxt_record.class)
actual_tokens = nxt_record.to_s.split
expected_tokens = 'a.dnsruby.com. 10800 IN NXT b.dnsruby.com A AAAA NXT'.split
assert_equal(actual_tokens, expected_tokens)
end
def assert_rr_content(rr)
assert_equal(rr.type, 'NXT') # TODO: Should this be a string or a number?
assert_equal(rr.name, Name.create('b.dnsruby.com.'))
assert_equal(rr.ttl, 10800)
assert_equal(rr.klass, 'IN')
assert_equal(rr.next_domain, Name.create('a.dnsruby.com.'))
end
def test_new_from_string
rr = RR::NXT.new_from_string('b.dnsruby.com. 10800 IN NXT a.dnsruby.com. SOA NXT')
assert_rr_content(rr)
end
def test_new_from_hash
assert_rr_content(sample_nxt_rr)
end
def test_new_from_data
rdata = RR::NXT.build_rdata('a.dnsruby.com.', [Types::SOA, Types::NXT])
rr = RR::NXT.new_from_data('b.dnsruby.com.', Types::NXT, Classes::IN, 10800,
rdata.size, rdata, 0)
assert_rr_content(rr)
end
def test_owner_alias
rr = sample_nxt_rr
assert_equal('b.dnsruby.com', rr.owner.to_s)
assert_equal('b.dnsruby.com', rr.name.to_s)
new_name = Name.create('z.com')
rr.owner = new_name
assert_equal(new_name, rr.owner)
assert_equal(new_name, rr.name)
end
def test_encode_decode_message
nxt_rr = sample_nxt_rr
message = Message.new
message.add_answer(nxt_rr)
binary_message = message.encode
reconstructed_message = Message.decode(binary_message)
reconstructed_nxt_rr = reconstructed_message.answer[0]
assert_equal(nxt_rr, reconstructed_nxt_rr)
end
def sample_nxt_rr
RR::NXT.new_from_hash(
name: 'b.dnsruby.com.',
ttl: 10800,
klass: Classes::IN,
next_domain: 'a.dnsruby.com.',
types: [Types::SOA, Types::NXT])
end
end
# Sample zone file for setting up BIND to serve a NXT record:
=begin
$TTL 3h
@ IN SOA dnsruby.com. foo.dnsruby.com. (
1 ; serial
3H ; refresh after 3 hours
1H ; retry after 1 hour
1W ; expire after 1 week
1H) ; negative caching TTL of 1 hour
dnsruby.com. IN NS ns1
; Addresses for canonical names
ns1.dnsruby.com. IN A 127.0.0.1
a.dnsruby.com. IN A 2.4.6.8
IN NXT b A AAAA NXT
b.dnsruby.com. IN A 2.4.6.9
IN GPOS 40 50 60
=end
|
