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ca404e94 | 1 | #!/usr/bin/env python |
b1bec9f0 RG |
2 | import dns |
3 | import clientsubnetoption | |
ca404e94 RG |
4 | from dnsdisttests import DNSDistTest |
5 | ||
6 | class TestBasics(DNSDistTest): | |
7 | ||
903853f4 RG |
8 | _config_template = """ |
9 | newServer{address="127.0.0.1:%s"} | |
10 | truncateTC(true) | |
d3ec24f9 PD |
11 | addAction(AndRule{QTypeRule(DNSQType.ANY), TCPRule(false)}, TCAction()) |
12 | addAction(RegexRule("evil[0-9]{4,}\\\\.regex\\\\.tests\\\\.powerdns\\\\.com$"), RCodeAction(DNSRCode.REFUSED)) | |
903853f4 RG |
13 | mySMN = newSuffixMatchNode() |
14 | mySMN:add(newDNSName("nameAndQtype.tests.powerdns.com.")) | |
d3ec24f9 | 15 | addAction(AndRule{SuffixMatchNodeRule(mySMN), QTypeRule("TXT")}, RCodeAction(DNSRCode.NOTIMP)) |
903853f4 | 16 | addAction(makeRule("drop.test.powerdns.com."), DropAction()) |
d3ec24f9 PD |
17 | addAction(AndRule({QTypeRule(DNSQType.A),QNameRule("ds9a.nl")}), SpoofAction("1.2.3.4")) |
18 | addAction(newDNSName("dnsname.addaction.powerdns.com."), RCodeAction(DNSRCode.REFUSED)) | |
19 | addAction({newDNSName("dnsname-table1.addaction.powerdns.com."), newDNSName("dnsname-table2.addaction.powerdns.com.")}, RCodeAction(DNSRCode.REFUSED)) | |
903853f4 RG |
20 | """ |
21 | ||
b63add03 RG |
22 | def testDropped(self): |
23 | """ | |
24 | Basics: Dropped query | |
25 | ||
26 | Send an A query for drop.test.powerdns.com. domain, | |
27 | which is dropped by configuration. We expect | |
28 | no response. | |
29 | """ | |
30 | name = 'drop.test.powerdns.com.' | |
31 | query = dns.message.make_query(name, 'A', 'IN') | |
6ca2e796 RG |
32 | for method in ("sendUDPQuery", "sendTCPQuery"): |
33 | sender = getattr(self, method) | |
34 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
35 | self.assertEquals(receivedResponse, None) | |
b63add03 | 36 | |
ca404e94 RG |
37 | def testAWithECS(self): |
38 | """ | |
617dfe22 | 39 | Basics: A query with an ECS value |
ca404e94 RG |
40 | """ |
41 | name = 'awithecs.tests.powerdns.com.' | |
42 | ecso = clientsubnetoption.ClientSubnetOption('1.2.3.4') | |
43 | query = dns.message.make_query(name, 'A', 'IN', use_edns=True, options=[ecso]) | |
44 | response = dns.message.make_response(query) | |
45 | rrset = dns.rrset.from_text(name, | |
feb22f99 | 46 | 60, |
ca404e94 RG |
47 | dns.rdataclass.IN, |
48 | dns.rdatatype.A, | |
49 | '127.0.0.1') | |
50 | ||
51 | response.answer.append(rrset) | |
52 | ||
6ca2e796 RG |
53 | for method in ("sendUDPQuery", "sendTCPQuery"): |
54 | sender = getattr(self, method) | |
55 | (receivedQuery, receivedResponse) = sender(query, response) | |
56 | receivedQuery.id = query.id | |
57 | self.assertEquals(query, receivedQuery) | |
58 | self.assertEquals(response, receivedResponse) | |
ca404e94 RG |
59 | |
60 | def testSimpleA(self): | |
61 | """ | |
617dfe22 | 62 | Basics: A query without EDNS |
ca404e94 RG |
63 | """ |
64 | name = 'simplea.tests.powerdns.com.' | |
65 | query = dns.message.make_query(name, 'A', 'IN', use_edns=False) | |
66 | response = dns.message.make_response(query) | |
e7a1029c | 67 | rrset = dns.rrset.from_text(name, |
ca404e94 RG |
68 | 3600, |
69 | dns.rdataclass.IN, | |
70 | dns.rdatatype.A, | |
71 | '127.0.0.1') | |
72 | response.answer.append(rrset) | |
73 | ||
6ca2e796 RG |
74 | for method in ("sendUDPQuery", "sendTCPQuery"): |
75 | sender = getattr(self, method) | |
76 | (receivedQuery, receivedResponse) = sender(query, response) | |
77 | self.assertTrue(receivedQuery) | |
78 | self.assertTrue(receivedResponse) | |
79 | receivedQuery.id = query.id | |
80 | self.assertEquals(query, receivedQuery) | |
81 | self.assertEquals(response, receivedResponse) | |
ca404e94 | 82 | |
ec5f5c6b RG |
83 | def testAnyIsTruncated(self): |
84 | """ | |
617dfe22 RG |
85 | Basics: Truncate ANY query |
86 | ||
ec5f5c6b RG |
87 | dnsdist is configured to reply with TC to ANY queries, |
88 | send an ANY query and check the result. | |
490a29bb | 89 | It should be truncated over UDP, not over TCP. |
ec5f5c6b RG |
90 | """ |
91 | name = 'any.tests.powerdns.com.' | |
92 | query = dns.message.make_query(name, 'ANY', 'IN') | |
955b9377 RG |
93 | # dnsdist sets RA = RD for TC responses |
94 | query.flags &= ~dns.flags.RD | |
ec5f5c6b RG |
95 | expectedResponse = dns.message.make_response(query) |
96 | expectedResponse.flags |= dns.flags.TC | |
97 | ||
0a2087eb | 98 | (_, receivedResponse) = self.sendUDPQuery(query, response=None, useQueue=False) |
ec5f5c6b RG |
99 | self.assertEquals(receivedResponse, expectedResponse) |
100 | ||
490a29bb | 101 | response = dns.message.make_response(query) |
e7a1029c | 102 | rrset = dns.rrset.from_text(name, |
490a29bb RG |
103 | 3600, |
104 | dns.rdataclass.IN, | |
105 | dns.rdatatype.A, | |
106 | '127.0.0.1') | |
107 | ||
108 | response.answer.append(rrset) | |
109 | ||
110 | (receivedQuery, receivedResponse) = self.sendTCPQuery(query, response) | |
111 | self.assertTrue(receivedQuery) | |
112 | self.assertTrue(receivedResponse) | |
113 | receivedQuery.id = query.id | |
490a29bb RG |
114 | self.assertEquals(query, receivedQuery) |
115 | self.assertEquals(receivedResponse, response) | |
ec5f5c6b RG |
116 | |
117 | def testTruncateTC(self): | |
118 | """ | |
617dfe22 RG |
119 | Basics: Truncate TC |
120 | ||
ec5f5c6b RG |
121 | dnsdist is configured to truncate TC (default), |
122 | we make the backend send responses | |
123 | with TC set and additional content, | |
124 | and check that the received response has been fixed. | |
125 | """ | |
126 | name = 'atruncatetc.tests.powerdns.com.' | |
127 | query = dns.message.make_query(name, 'A', 'IN') | |
128 | response = dns.message.make_response(query) | |
129 | rrset = dns.rrset.from_text(name, | |
130 | 3600, | |
131 | dns.rdataclass.IN, | |
132 | dns.rdatatype.A, | |
133 | '127.0.0.1') | |
134 | ||
135 | response.answer.append(rrset) | |
136 | response.flags |= dns.flags.TC | |
e0fd37ec RG |
137 | expectedResponse = dns.message.make_response(query) |
138 | expectedResponse.flags |= dns.flags.TC | |
139 | ||
140 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
141 | receivedQuery.id = query.id | |
142 | self.assertEquals(query, receivedQuery) | |
143 | self.assertEquals(expectedResponse.flags, receivedResponse.flags) | |
144 | self.assertEquals(expectedResponse.question, receivedResponse.question) | |
145 | self.assertFalse(response.answer == receivedResponse.answer) | |
146 | self.assertEquals(len(receivedResponse.answer), 0) | |
147 | self.assertEquals(len(receivedResponse.authority), 0) | |
148 | self.assertEquals(len(receivedResponse.additional), 0) | |
149 | self.checkMessageNoEDNS(expectedResponse, receivedResponse) | |
150 | ||
151 | def testTruncateTCEDNS(self): | |
152 | """ | |
153 | Basics: Truncate TC with EDNS | |
154 | ||
155 | dnsdist is configured to truncate TC (default), | |
156 | we make the backend send responses | |
157 | with TC set and additional content, | |
158 | and check that the received response has been fixed. | |
159 | Note that the query and initial response had EDNS, | |
160 | so the final response should have it too. | |
161 | """ | |
162 | name = 'atruncatetc.tests.powerdns.com.' | |
163 | query = dns.message.make_query(name, 'A', 'IN', use_edns=True, payload=4096, want_dnssec=True) | |
164 | response = dns.message.make_response(query) | |
165 | # force a different responder payload than the one in the query, | |
166 | # so we check that we don't just mirror it | |
167 | response.payload = 4242 | |
168 | rrset = dns.rrset.from_text(name, | |
169 | 3600, | |
170 | dns.rdataclass.IN, | |
171 | dns.rdatatype.A, | |
172 | '127.0.0.1') | |
173 | ||
174 | response.answer.append(rrset) | |
175 | response.flags |= dns.flags.TC | |
176 | expectedResponse = dns.message.make_response(query) | |
177 | expectedResponse.payload = 4242 | |
178 | expectedResponse.flags |= dns.flags.TC | |
ec5f5c6b RG |
179 | |
180 | (receivedQuery, receivedResponse) = self.sendUDPQuery(query, response) | |
181 | receivedQuery.id = query.id | |
ec5f5c6b RG |
182 | self.assertEquals(query, receivedQuery) |
183 | self.assertEquals(response.flags, receivedResponse.flags) | |
184 | self.assertEquals(response.question, receivedResponse.question) | |
185 | self.assertFalse(response.answer == receivedResponse.answer) | |
186 | self.assertEquals(len(receivedResponse.answer), 0) | |
187 | self.assertEquals(len(receivedResponse.authority), 0) | |
188 | self.assertEquals(len(receivedResponse.additional), 0) | |
e0fd37ec RG |
189 | print(expectedResponse) |
190 | print(receivedResponse) | |
191 | self.checkMessageEDNSWithoutOptions(expectedResponse, receivedResponse) | |
192 | self.assertFalse(receivedResponse.ednsflags & dns.flags.DO) | |
193 | self.assertEquals(receivedResponse.payload, 4242) | |
ec5f5c6b RG |
194 | |
195 | def testRegexReturnsRefused(self): | |
196 | """ | |
617dfe22 RG |
197 | Basics: Refuse query matching regex |
198 | ||
ec5f5c6b RG |
199 | dnsdist is configured to reply 'refused' for query |
200 | matching "evil[0-9]{4,}\\.regex\\.tests\\.powerdns\\.com$". | |
201 | We send a query for evil4242.powerdns.com | |
202 | and check that the response is "refused". | |
203 | """ | |
204 | name = 'evil4242.regex.tests.powerdns.com.' | |
205 | query = dns.message.make_query(name, 'A', 'IN') | |
7af22479 | 206 | query.flags &= ~dns.flags.RD |
ec5f5c6b RG |
207 | expectedResponse = dns.message.make_response(query) |
208 | expectedResponse.set_rcode(dns.rcode.REFUSED) | |
209 | ||
6ca2e796 RG |
210 | for method in ("sendUDPQuery", "sendTCPQuery"): |
211 | sender = getattr(self, method) | |
212 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
213 | self.assertEquals(receivedResponse, expectedResponse) | |
ec5f5c6b | 214 | |
feb22f99 | 215 | def testQNameReturnsSpoofed(self): |
216 | """ | |
217 | Basics: test QNameRule and Spoof | |
218 | ||
219 | dnsdist is configured to reply 1.2.3.4 for A query for exactly ds9a.nl | |
220 | """ | |
221 | name = 'ds9a.nl.' | |
222 | query = dns.message.make_query(name, 'A', 'IN') | |
223 | query.flags &= ~dns.flags.RD | |
224 | expectedResponse = dns.message.make_response(query) | |
225 | expectedResponse.set_rcode(dns.rcode.NOERROR) | |
226 | rrset = dns.rrset.from_text(name, | |
227 | 3600, | |
228 | dns.rdataclass.IN, | |
229 | dns.rdatatype.A, | |
230 | '1.2.3.4') | |
231 | expectedResponse.answer.append(rrset) | |
232 | ||
6ca2e796 RG |
233 | for method in ("sendUDPQuery", "sendTCPQuery"): |
234 | sender = getattr(self, method) | |
235 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
236 | self.assertEquals(receivedResponse, expectedResponse) | |
feb22f99 | 237 | |
ec5f5c6b RG |
238 | def testDomainAndQTypeReturnsNotImplemented(self): |
239 | """ | |
617dfe22 RG |
240 | Basics: NOTIMPL for specific name and qtype |
241 | ||
ec5f5c6b | 242 | dnsdist is configured to reply 'not implemented' for query |
e7a1029c | 243 | matching "nameAndQtype.tests.powerdns.com." AND qtype TXT. |
ec5f5c6b RG |
244 | We send a TXT query for "nameAndQtype.powerdns.com." |
245 | and check that the response is 'not implemented'. | |
246 | """ | |
247 | name = 'nameAndQtype.tests.powerdns.com.' | |
248 | query = dns.message.make_query(name, 'TXT', 'IN') | |
7af22479 | 249 | query.flags &= ~dns.flags.RD |
ec5f5c6b RG |
250 | expectedResponse = dns.message.make_response(query) |
251 | expectedResponse.set_rcode(dns.rcode.NOTIMP) | |
252 | ||
6ca2e796 RG |
253 | for method in ("sendUDPQuery", "sendTCPQuery"): |
254 | sender = getattr(self, method) | |
255 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
256 | self.assertEquals(receivedResponse, expectedResponse) | |
ec5f5c6b RG |
257 | |
258 | def testDomainWithoutQTypeIsNotAffected(self): | |
259 | """ | |
617dfe22 RG |
260 | Basics: NOTIMPL qtype canary |
261 | ||
ec5f5c6b | 262 | dnsdist is configured to reply 'not implemented' for query |
e7a1029c | 263 | matching "nameAndQtype.tests.powerdns.com." AND qtype TXT. |
ec5f5c6b RG |
264 | We send a A query for "nameAndQtype.tests.powerdns.com." |
265 | and check that the response is OK. | |
266 | """ | |
267 | name = 'nameAndQtype.tests.powerdns.com.' | |
268 | query = dns.message.make_query(name, 'A', 'IN') | |
269 | response = dns.message.make_response(query) | |
270 | rrset = dns.rrset.from_text(name, | |
271 | 3600, | |
272 | dns.rdataclass.IN, | |
273 | dns.rdatatype.A, | |
274 | '127.0.0.1') | |
275 | response.answer.append(rrset) | |
276 | ||
6ca2e796 RG |
277 | for method in ("sendUDPQuery", "sendTCPQuery"): |
278 | sender = getattr(self, method) | |
279 | (receivedQuery, receivedResponse) = sender(query, response) | |
280 | self.assertTrue(receivedQuery) | |
281 | self.assertTrue(receivedResponse) | |
282 | receivedQuery.id = query.id | |
283 | self.assertEquals(query, receivedQuery) | |
284 | self.assertEquals(response, receivedResponse) | |
ec5f5c6b RG |
285 | |
286 | def testOtherDomainANDQTypeIsNotAffected(self): | |
287 | """ | |
617dfe22 RG |
288 | Basics: NOTIMPL qname canary |
289 | ||
ec5f5c6b | 290 | dnsdist is configured to reply 'not implemented' for query |
e7a1029c | 291 | matching "nameAndQtype.tests.powerdns.com." AND qtype TXT. |
ec5f5c6b RG |
292 | We send a TXT query for "OtherNameAndQtype.tests.powerdns.com." |
293 | and check that the response is OK. | |
294 | """ | |
295 | name = 'OtherNameAndQtype.tests.powerdns.com.' | |
296 | query = dns.message.make_query(name, 'TXT', 'IN') | |
297 | response = dns.message.make_response(query) | |
298 | rrset = dns.rrset.from_text(name, | |
299 | 3600, | |
300 | dns.rdataclass.IN, | |
301 | dns.rdatatype.TXT, | |
302 | 'nothing to see here') | |
303 | response.answer.append(rrset) | |
304 | ||
6ca2e796 RG |
305 | for method in ("sendUDPQuery", "sendTCPQuery"): |
306 | sender = getattr(self, method) | |
307 | (receivedQuery, receivedResponse) = sender(query, response) | |
308 | self.assertTrue(receivedQuery) | |
309 | self.assertTrue(receivedResponse) | |
310 | receivedQuery.id = query.id | |
311 | self.assertEquals(query, receivedQuery) | |
312 | self.assertEquals(response, receivedResponse) | |
ec5f5c6b | 313 | |
7267213a RG |
314 | def testWrongResponse(self): |
315 | """ | |
316 | Basics: Unrelated response from the backend | |
317 | ||
318 | The backend send an unrelated answer over UDP, it should | |
319 | be discarded by dnsdist. It could happen if we wrap around | |
de4896ba | 320 | maxOutstanding queries too quickly or have more than maxOutstanding |
7267213a RG |
321 | queries to a specific backend in the air over UDP, |
322 | but does not really make sense over TCP. | |
323 | """ | |
324 | name = 'query.unrelated.tests.powerdns.com.' | |
325 | unrelatedName = 'answer.unrelated.tests.powerdns.com.' | |
326 | query = dns.message.make_query(name, 'TXT', 'IN') | |
327 | unrelatedQuery = dns.message.make_query(unrelatedName, 'TXT', 'IN') | |
328 | unrelatedResponse = dns.message.make_response(unrelatedQuery) | |
329 | rrset = dns.rrset.from_text(unrelatedName, | |
330 | 3600, | |
331 | dns.rdataclass.IN, | |
332 | dns.rdatatype.TXT, | |
333 | 'nothing to see here') | |
334 | unrelatedResponse.answer.append(rrset) | |
335 | ||
6ca2e796 RG |
336 | for method in ("sendUDPQuery", "sendTCPQuery"): |
337 | sender = getattr(self, method) | |
338 | (receivedQuery, receivedResponse) = sender(query, unrelatedResponse) | |
339 | self.assertTrue(receivedQuery) | |
340 | self.assertEquals(receivedResponse, None) | |
341 | receivedQuery.id = query.id | |
342 | self.assertEquals(query, receivedQuery) | |
f87c4aff | 343 | |
c8c3d4e4 RG |
344 | def testHeaderOnlyRefused(self): |
345 | """ | |
346 | Basics: Header-only refused response | |
347 | """ | |
348 | name = 'header-only-refused-response.tests.powerdns.com.' | |
349 | query = dns.message.make_query(name, 'A', 'IN') | |
350 | response = dns.message.make_response(query) | |
351 | response.set_rcode(dns.rcode.REFUSED) | |
352 | response.question = [] | |
353 | ||
6ca2e796 RG |
354 | for method in ("sendUDPQuery", "sendTCPQuery"): |
355 | sender = getattr(self, method) | |
356 | (receivedQuery, receivedResponse) = sender(query, response) | |
357 | self.assertTrue(receivedQuery) | |
358 | receivedQuery.id = query.id | |
359 | self.assertEquals(query, receivedQuery) | |
360 | self.assertEquals(receivedResponse, response) | |
c8c3d4e4 RG |
361 | |
362 | def testHeaderOnlyNoErrorResponse(self): | |
363 | """ | |
364 | Basics: Header-only NoError response should be dropped | |
365 | """ | |
366 | name = 'header-only-noerror-response.tests.powerdns.com.' | |
367 | query = dns.message.make_query(name, 'A', 'IN') | |
368 | response = dns.message.make_response(query) | |
369 | response.question = [] | |
370 | ||
6ca2e796 RG |
371 | for method in ("sendUDPQuery", "sendTCPQuery"): |
372 | sender = getattr(self, method) | |
373 | (receivedQuery, receivedResponse) = sender(query, response) | |
374 | self.assertTrue(receivedQuery) | |
375 | receivedQuery.id = query.id | |
376 | self.assertEquals(query, receivedQuery) | |
377 | self.assertEquals(receivedResponse, None) | |
c8c3d4e4 RG |
378 | |
379 | def testHeaderOnlyNXDResponse(self): | |
380 | """ | |
381 | Basics: Header-only NXD response should be dropped | |
382 | """ | |
383 | name = 'header-only-nxd-response.tests.powerdns.com.' | |
384 | query = dns.message.make_query(name, 'A', 'IN') | |
385 | response = dns.message.make_response(query) | |
386 | response.set_rcode(dns.rcode.NXDOMAIN) | |
387 | response.question = [] | |
388 | ||
6ca2e796 RG |
389 | for method in ("sendUDPQuery", "sendTCPQuery"): |
390 | sender = getattr(self, method) | |
391 | (receivedQuery, receivedResponse) = sender(query, response) | |
392 | self.assertTrue(receivedQuery) | |
393 | receivedQuery.id = query.id | |
394 | self.assertEquals(query, receivedQuery) | |
395 | self.assertEquals(receivedResponse, None) | |
c8c3d4e4 | 396 | |
f850b032 PL |
397 | def testAddActionDNSName(self): |
398 | """ | |
399 | Basics: test if addAction accepts a DNSName | |
400 | """ | |
401 | name = 'dnsname.addaction.powerdns.com.' | |
402 | query = dns.message.make_query(name, 'A', 'IN') | |
7af22479 | 403 | query.flags &= ~dns.flags.RD |
f850b032 PL |
404 | expectedResponse = dns.message.make_response(query) |
405 | expectedResponse.set_rcode(dns.rcode.REFUSED) | |
406 | ||
6ca2e796 RG |
407 | for method in ("sendUDPQuery", "sendTCPQuery"): |
408 | sender = getattr(self, method) | |
409 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
410 | self.assertEquals(receivedResponse, expectedResponse) | |
f850b032 PL |
411 | |
412 | def testAddActionDNSNames(self): | |
413 | """ | |
414 | Basics: test if addAction accepts a table of DNSNames | |
415 | """ | |
416 | for name in ['dnsname-table{}.addaction.powerdns.com.'.format(i) for i in range(1,2)]: | |
417 | query = dns.message.make_query(name, 'A', 'IN') | |
7af22479 | 418 | query.flags &= ~dns.flags.RD |
f850b032 PL |
419 | expectedResponse = dns.message.make_response(query) |
420 | expectedResponse.set_rcode(dns.rcode.REFUSED) | |
421 | ||
6ca2e796 RG |
422 | for method in ("sendUDPQuery", "sendTCPQuery"): |
423 | sender = getattr(self, method) | |
424 | (_, receivedResponse) = sender(query, response=None, useQueue=False) | |
425 | self.assertEquals(receivedResponse, expectedResponse) | |
ca404e94 | 426 |