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a76b0d63 RG |
1 | #!/usr/bin/env python |
2 | import unittest | |
3 | import dns | |
4 | import clientsubnetoption | |
5 | from dnsdisttests import DNSDistTest | |
6 | ||
7 | class TestBasics(DNSDistTest): | |
8 | ||
9 | _config_template = """ | |
10 | newServer{address="127.0.0.1:%s"} | |
11 | ||
12 | function lol(dq) | |
13 | return DNSAction.None, "" | |
14 | end | |
15 | addAction(AllRule(), LuaAction(lol)) | |
16 | ||
17 | addAction("tag-me-dns-1.tags.tests.powerdns.com.", TagAction("dns", "value1")) | |
18 | addAction("tag-me-dns-2.tags.tests.powerdns.com.", TagAction("dns", "value2")) | |
19 | addAction("tag-me-response-1.tags.tests.powerdns.com.", TagAction("response", "value1")) | |
20 | addAction("tag-me-response-2.tags.tests.powerdns.com.", TagAction("response", "value2")) | |
21 | ||
22 | addAction(TagRule("not-dns"), SpoofAction("1.2.3.4")) | |
23 | addAction(TagRule("dns", "value1"), SpoofAction("1.2.3.50")) | |
24 | addAction(TagRule("dns"), SpoofAction("1.2.3.100")) | |
25 | ||
26 | function responseHandlerSetTC(dr) | |
27 | dr.dh:setTC(true) | |
28 | return DNSResponseAction.HeaderModify, "" | |
29 | end | |
30 | ||
31 | function responseHandlerUnsetQR(dr) | |
32 | dr.dh:setQR(false) | |
33 | return DNSResponseAction.HeaderModify, "" | |
34 | end | |
35 | ||
36 | addResponseAction(TagRule("not-dns"), DropResponseAction()) | |
37 | addResponseAction(TagRule("response", "value1"), LuaResponseAction(responseHandlerSetTC)) | |
38 | addResponseAction(TagRule("response", "no-match-value"), DropResponseAction()) | |
39 | ||
40 | addResponseAction("tag-me-response-3.tags.tests.powerdns.com.", TagResponseAction("response-tag", "value")) | |
41 | addResponseAction(TagRule("response-tag"), LuaResponseAction(responseHandlerUnsetQR)) | |
42 | """ | |
43 | ||
44 | def testQuestionNoTag(self): | |
45 | """ | |
46 | Tag: No match | |
47 | """ | |
48 | name = 'no-match.tags.tests.powerdns.com.' | |
49 | query = dns.message.make_query(name, 'A', 'IN') | |
50 | response = dns.message.make_response(query) | |
51 | rrset = dns.rrset.from_text(name, | |
52 | 3600, | |
53 | dns.rdataclass.IN, | |
54 | dns.rdatatype.A, | |
55 | '127.0.0.1') | |
56 | response.answer.append(rrset) | |
57 | ||
6ca2e796 RG |
58 | for method in ("sendUDPQuery", "sendTCPQuery"): |
59 | sender = getattr(self, method) | |
60 | (receivedQuery, receivedResponse) = sender(query, response) | |
61 | self.assertTrue(receivedQuery) | |
62 | self.assertTrue(receivedResponse) | |
63 | receivedQuery.id = query.id | |
64 | self.assertEquals(query, receivedQuery) | |
65 | self.assertEquals(response, receivedResponse) | |
a76b0d63 RG |
66 | |
67 | def testQuestionMatchTagAndValue(self): | |
68 | """ | |
69 | Tag: Name and value match | |
70 | """ | |
71 | name = 'tag-me-dns-1.tags.tests.powerdns.com.' | |
72 | query = dns.message.make_query(name, 'A', 'IN') | |
73 | # dnsdist set RA = RD for spoofed responses | |
74 | query.flags &= ~dns.flags.RD | |
75 | expectedResponse = dns.message.make_response(query) | |
76 | rrset = dns.rrset.from_text(name, | |
77 | 60, | |
78 | dns.rdataclass.IN, | |
79 | dns.rdatatype.A, | |
80 | '1.2.3.50') | |
81 | expectedResponse.answer.append(rrset) | |
82 | ||
6ca2e796 RG |
83 | for method in ("sendUDPQuery", "sendTCPQuery"): |
84 | sender = getattr(self, method) | |
85 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
86 | self.assertTrue(receivedResponse) | |
87 | self.assertEquals(expectedResponse, receivedResponse) | |
a76b0d63 RG |
88 | |
89 | def testQuestionMatchTagOnly(self): | |
90 | """ | |
91 | Tag: Name matches | |
92 | """ | |
93 | name = 'tag-me-dns-2.tags.tests.powerdns.com.' | |
94 | query = dns.message.make_query(name, 'A', 'IN') | |
95 | # dnsdist set RA = RD for spoofed responses | |
96 | query.flags &= ~dns.flags.RD | |
97 | expectedResponse = dns.message.make_response(query) | |
98 | rrset = dns.rrset.from_text(name, | |
99 | 60, | |
100 | dns.rdataclass.IN, | |
101 | dns.rdatatype.A, | |
102 | '1.2.3.100') | |
103 | expectedResponse.answer.append(rrset) | |
104 | ||
6ca2e796 RG |
105 | for method in ("sendUDPQuery", "sendTCPQuery"): |
106 | sender = getattr(self, method) | |
107 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
108 | self.assertTrue(receivedResponse) | |
109 | self.assertEquals(expectedResponse, receivedResponse) | |
a76b0d63 RG |
110 | |
111 | def testResponseNoMatch(self): | |
112 | """ | |
113 | Tag: Tag set on query does not match anything | |
114 | """ | |
115 | name = 'tag-me-response-2.tags.tests.powerdns.com.' | |
116 | query = dns.message.make_query(name, 'A', 'IN') | |
117 | response = dns.message.make_response(query) | |
118 | rrset = dns.rrset.from_text(name, | |
119 | 60, | |
120 | dns.rdataclass.IN, | |
121 | dns.rdatatype.A, | |
122 | '192.0.2.1') | |
123 | response.answer.append(rrset) | |
124 | ||
6ca2e796 RG |
125 | for method in ("sendUDPQuery", "sendTCPQuery"): |
126 | sender = getattr(self, method) | |
127 | (receivedQuery, receivedResponse) = sender(query, response) | |
128 | self.assertTrue(receivedQuery) | |
129 | self.assertTrue(receivedResponse) | |
130 | receivedQuery.id = query.id | |
131 | self.assertEquals(query, receivedQuery) | |
132 | self.assertEquals(response, receivedResponse) | |
a76b0d63 RG |
133 | |
134 | def testResponseMatchTagAndValue(self): | |
135 | """ | |
136 | Tag: Tag and value set on query matches on response | |
137 | """ | |
138 | name = 'tag-me-response-1.tags.tests.powerdns.com.' | |
139 | query = dns.message.make_query(name, 'A', 'IN') | |
140 | # dnsdist set RA = RD for spoofed responses | |
141 | query.flags &= ~dns.flags.RD | |
142 | response = dns.message.make_response(query) | |
143 | rrset = dns.rrset.from_text(name, | |
144 | 60, | |
145 | dns.rdataclass.IN, | |
146 | dns.rdatatype.A, | |
147 | '1.2.3.100') | |
148 | response.answer.append(rrset) | |
149 | expectedResponse = dns.message.make_response(query) | |
150 | expectedResponse.answer.append(rrset) | |
151 | # we will set TC if the tag matches | |
152 | expectedResponse.flags |= dns.flags.TC | |
153 | ||
6ca2e796 RG |
154 | for method in ("sendUDPQuery", "sendTCPQuery"): |
155 | sender = getattr(self, method) | |
156 | (receivedQuery, receivedResponse) = sender(query, response) | |
157 | self.assertTrue(receivedQuery) | |
158 | self.assertTrue(receivedResponse) | |
159 | receivedQuery.id = query.id | |
160 | self.assertEquals(query, receivedQuery) | |
161 | self.assertEquals(expectedResponse, receivedResponse) | |
a76b0d63 RG |
162 | |
163 | def testResponseMatchResponseTagMatches(self): | |
164 | """ | |
165 | Tag: Tag set on response matches | |
166 | """ | |
167 | name = 'tag-me-response-3.tags.tests.powerdns.com.' | |
168 | query = dns.message.make_query(name, 'A', 'IN') | |
169 | # dnsdist set RA = RD for spoofed responses | |
170 | query.flags &= ~dns.flags.RD | |
171 | response = dns.message.make_response(query) | |
172 | rrset = dns.rrset.from_text(name, | |
173 | 60, | |
174 | dns.rdataclass.IN, | |
175 | dns.rdatatype.A, | |
176 | '1.2.3.100') | |
177 | response.answer.append(rrset) | |
178 | expectedResponse = dns.message.make_response(query) | |
179 | expectedResponse.answer.append(rrset) | |
180 | # we will set QR=0 if the tag matches | |
181 | expectedResponse.flags &= ~dns.flags.QR | |
182 | ||
6ca2e796 RG |
183 | for method in ("sendUDPQuery", "sendTCPQuery"): |
184 | sender = getattr(self, method) | |
185 | (receivedQuery, receivedResponse) = sender(query, response) | |
186 | self.assertTrue(receivedQuery) | |
187 | self.assertTrue(receivedResponse) | |
188 | receivedQuery.id = query.id | |
189 | self.assertEquals(query, receivedQuery) | |
190 | self.assertEquals(expectedResponse, receivedResponse) |