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test-syncres_cc8.cc
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test-syncres_cc8.cc
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#define BOOST_TEST_DYN_LINK
#include <boost/test/unit_test.hpp>
#include "test-syncres_cc.hh"
BOOST_AUTO_TEST_SUITE(syncres_cc8)
BOOST_AUTO_TEST_CASE(test_nsec_denial_nowrap)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
No wrap test case:
a.example.org. -> d.example.org. denies the existence of b.example.org.
*/
addNSECRecordToLW(DNSName("a.example.org."), DNSName("d.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.example.org."), QType::NSEC)] = pair;
/* add wildcard denial */
recordContents.clear();
signatureContents.clear();
addNSECRecordToLW(DNSName("example.org."), DNSName("+.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(DNSName("example.org."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
denialState = getDenial(denialMap, DNSName("d.example.org."), QType::A, false, false);
/* let's check that d.example.org. is not denied by this proof */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_denial_wrap_case_1)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
Wrap case 1 test case:
z.example.org. -> b.example.org. denies the existence of a.example.org.
*/
addNSECRecordToLW(DNSName("z.example.org."), DNSName("b.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("z.example.org."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("a.example.org."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
denialState = getDenial(denialMap, DNSName("d.example.org."), QType::A, false, false);
/* let's check that d.example.org. is not denied by this proof */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_denial_wrap_case_2)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
Wrap case 2 test case:
y.example.org. -> a.example.org. denies the existence of z.example.org.
*/
addNSECRecordToLW(DNSName("y.example.org."), DNSName("a.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("y.example.org."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("z.example.org."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
denialState = getDenial(denialMap, DNSName("d.example.org."), QType::A, false, false);
/* let's check that d.example.org. is not denied by this proof */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_denial_only_one_nsec)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
Only one NSEC in the whole zone test case:
a.example.org. -> a.example.org. denies the existence of b.example.org.
*/
addNSECRecordToLW(DNSName("a.example.org."), DNSName("a.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.example.org."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
denialState = getDenial(denialMap, DNSName("a.example.org."), QType::A, false, false);
/* let's check that d.example.org. is not denied by this proof */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_root_nxd_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
The RRSIG from "." denies the existence of anything between a. and c.,
including b.
*/
addNSECRecordToLW(DNSName("a."), DNSName("c."), {QType::NS}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a."), QType::NSEC)] = pair;
/* add wildcard denial */
recordContents.clear();
signatureContents.clear();
addNSECRecordToLW(DNSName("."), DNSName("+"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(DNSName("."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("b."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
}
BOOST_AUTO_TEST_CASE(test_nsec_ancestor_nxqtype_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
The RRSIG from "." denies the existence of any type except NS at a.
However since it's an ancestor delegation NSEC (NS bit set, SOA bit clear,
signer field that is shorter than the owner name of the NSEC RR) it can't
be used to deny anything except the whole name (which does not make sense here)
or a DS.
*/
addNSECRecordToLW(DNSName("a."), DNSName("b."), {QType::NS}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a."), QType::NSEC)] = pair;
/* RFC 6840 section 4.1 "Clarifications on Nonexistence Proofs":
Ancestor delegation NSEC or NSEC3 RRs MUST NOT be used to assume
nonexistence of any RRs below that zone cut, which include all RRs at
that (original) owner name other than DS RRs, and all RRs below that
owner name regardless of type.
*/
dState denialState = getDenial(denialMap, DNSName("a."), QType::A, false, true);
/* no data means the qname/qtype is not denied, because an ancestor
delegation NSEC can only deny the DS */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
/* it can not be used to deny any RRs below that owner name either */
denialState = getDenial(denialMap, DNSName("sub.a."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("a."), QType::DS, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NXQTYPE);
}
BOOST_AUTO_TEST_CASE(test_nsec_ds_denial_from_child)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSECRecordToLW(DNSName("example.org."), DNSName("a.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("example.org."), QType::NSEC)] = pair;
/* check that this NSEC from the child zone can deny a AAAA at the apex */
BOOST_CHECK_EQUAL(getDenial(denialMap, DNSName("example.org."), QType::AAAA, false, true, true), dState::NXQTYPE);
/* but not that the DS does not exist, since we need the parent for that */
BOOST_CHECK_EQUAL(getDenial(denialMap, DNSName("example.org."), QType::DS, false, true, true), dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_insecure_delegation_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
* RFC 5155 section 8.9:
* If there is an NSEC3 RR present in the response that matches the
* delegation name, then the validator MUST ensure that the NS bit is
* set and that the DS bit is not set in the Type Bit Maps field of the
* NSEC3 RR.
*/
/*
The RRSIG from "." denies the existence of any type at a.
NS should be set if it was proving an insecure delegation, let's check that
we correctly detect that it's not.
*/
addNSECRecordToLW(DNSName("a."), DNSName("b."), {}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a."), QType::NSEC)] = pair;
/* Insecure because the NS is not set, so while it does
denies the DS, it can't prove an insecure delegation */
dState denialState = getDenial(denialMap, DNSName("a."), QType::DS, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_nxqtype_cname)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSECRecordToLW(DNSName("a.powerdns.com."), DNSName("a.c.powerdns.com."), {QType::CNAME}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.powerdns.com."), QType::NSEC)] = pair;
/* this NSEC is not valid to deny a.powerdns.com|A since it states that a CNAME exists */
dState denialState = getDenial(denialMap, DNSName("a.powerdns.com."), QType::A, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_nxqtype_ds)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSEC3UnhashedRecordToLW(DNSName("powerdns.com."), DNSName("powerdns.com."), "whatever", {QType::A}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
records.clear();
/* this NSEC3 is not valid to deny the DS since it is from the child zone */
BOOST_CHECK_EQUAL(getDenial(denialMap, DNSName("powerdns.com."), QType::DS, false, true), dState::NODENIAL);
/* AAAA should be fine, though */
BOOST_CHECK_EQUAL(getDenial(denialMap, DNSName("powerdns.com."), QType::AAAA, false, true), dState::NXQTYPE);
}
BOOST_AUTO_TEST_CASE(test_nsec3_nxqtype_cname)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSEC3UnhashedRecordToLW(DNSName("a.powerdns.com."), DNSName("powerdns.com."), "whatever", {QType::CNAME}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
records.clear();
/* this NSEC3 is not valid to deny a.powerdns.com|A since it states that a CNAME exists */
dState denialState = getDenial(denialMap, DNSName("a.powerdns.com."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_nxdomain_denial_missing_wildcard)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSECRecordToLW(DNSName("a.powerdns.com."), DNSName("d.powerdns.com"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.powerdns.com."), QType::NSEC)] = pair;
dState denialState = getDenial(denialMap, DNSName("b.powerdns.com."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_nxdomain_denial_missing_wildcard)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSEC3NarrowRecordToLW(DNSName("a.powerdns.com."), DNSName("powerdns.com."), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* Add NSEC3 for the closest encloser */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3UnhashedRecordToLW(DNSName("powerdns.com."), DNSName("powerdns.com."), "whatever", {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
dState denialState = getDenial(denialMap, DNSName("a.powerdns.com."), QType::A, false, false);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_expanded_wildcard_proof)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/* proves that a.example.com does exist, and has been generated from a wildcard (see the RRSIG below) */
addNSECRecordToLW(DNSName("a.example.org."), DNSName("d.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300, false, boost::none, DNSName("example.org."));
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.example.org."), QType::NSEC)] = pair;
/* This is an expanded wildcard proof, meaning that it does prove that the exact name
does not exist so the wildcard can apply */
dState denialState = getDenial(denialMap, DNSName("a.example.org."), QType(0).getCode(), false, false, false, /* normally retrieved from the RRSIG's d_labels */ 2);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
}
BOOST_AUTO_TEST_CASE(test_nsec_wildcard_with_cname)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/* proves that b.example.com does not exist */
addNSECRecordToLW(DNSName("a.example.org."), DNSName("d.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.example.org."), QType::NSEC)] = pair;
/* add a NSEC proving that a wildcard exists, without a CNAME type */
recordContents.clear();
signatureContents.clear();
addNSECRecordToLW(DNSName("*.example.org."), DNSName("+.example.org"), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(DNSName("*.example.org."), QType::NSEC)] = pair;
/* A does exist at the wildcard, AAAA does not */
dState denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::AAAA, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NXQTYPE);
/* now we replace the wildcard by one with a CNAME */
recordContents.clear();
signatureContents.clear();
addNSECRecordToLW(DNSName("*.example.org."), DNSName("+.example.org"), {QType::CNAME, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(DNSName("*.example.org."), QType::NSEC)] = pair;
/* A and AAAA do not exist but we have a CNAME so at the wildcard */
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::AAAA, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_wildcard_with_cname)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("example.org."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/* proves that b.example.com does not exist */
addNSEC3NarrowRecordToLW(DNSName("b.example.org"), DNSName("example.org."), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC3}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* Add NSEC3 for the closest encloser */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3UnhashedRecordToLW(DNSName("example.org."), DNSName("example.org."), "whatever", {QType::A, QType::TXT, QType::RRSIG, QType::NSEC}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* add wildcard, without a CNAME type */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3UnhashedRecordToLW(DNSName("*.example.org."), DNSName("example.org"), "whatever", {QType::A, QType::TXT, QType::RRSIG, QType::NSEC3}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* A does exist at the wildcard, AAAA does not */
dState denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::AAAA, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NXQTYPE);
/* now we replace the wildcard by one with a CNAME */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3UnhashedRecordToLW(DNSName("*.example.org."), DNSName("example.org"), "whatever", {QType::CNAME, QType::RRSIG, QType::NSEC3}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("example.org."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* A and AAAA do not exist but we have a CNAME so at the wildcard */
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("b.example.org."), QType::AAAA, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec_ent_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("powerdns.com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
addNSECRecordToLW(DNSName("a.powerdns.com."), DNSName("a.c.powerdns.com."), {QType::A}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(DNSName("a.powerdns.com."), QType::NSEC)] = pair;
/* this NSEC is valid to prove a NXQTYPE at c.powerdns.com because it proves that
it is an ENT */
dState denialState = getDenial(denialMap, DNSName("c.powerdns.com."), QType::AAAA, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NXQTYPE);
/* this NSEC is not valid to prove a NXQTYPE at b.powerdns.com,
it could prove a NXDOMAIN if it had an additional wildcard denial */
denialState = getDenial(denialMap, DNSName("b.powerdns.com."), QType::AAAA, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
/* this NSEC is not valid to prove a NXQTYPE for QType::A at a.c.powerdns.com either */
denialState = getDenial(denialMap, DNSName("a.c.powerdns.com."), QType::A, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
/* if we add the wildcard denial proof, we should get a NXDOMAIN proof for b.powerdns.com */
recordContents.clear();
signatureContents.clear();
addNSECRecordToLW(DNSName(").powerdns.com."), DNSName("+.powerdns.com."), {}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("powerdns.com."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
records.clear();
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(DNSName(").powerdns.com."), QType::NSEC)] = pair;
denialState = getDenial(denialMap, DNSName("b.powerdns.com."), QType::A, true, false);
BOOST_CHECK_EQUAL(denialState, dState::NXDOMAIN);
/* this NSEC is NOT valid to prove a NXDOMAIN at c.powerdns.com because it proves that
it exists and is an ENT */
denialState = getDenial(denialMap, DNSName("c.powerdns.com."), QType::AAAA, true, false);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_ancestor_nxqtype_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
The RRSIG from "." denies the existence of any type except NS at a.
However since it's an ancestor delegation NSEC (NS bit set, SOA bit clear,
signer field that is shorter than the owner name of the NSEC RR) it can't
be used to deny anything except the whole name or a DS.
*/
addNSEC3UnhashedRecordToLW(DNSName("a."), DNSName("."), "whatever", {QType::NS}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
records.clear();
/* RFC 6840 section 4.1 "Clarifications on Nonexistence Proofs":
Ancestor delegation NSEC or NSEC3 RRs MUST NOT be used to assume
nonexistence of any RRs below that zone cut, which include all RRs at
that (original) owner name other than DS RRs, and all RRs below that
owner name regardless of type.
*/
dState denialState = getDenial(denialMap, DNSName("a."), QType::A, false, true);
/* no denial means the qname/qtype is not denied, because an ancestor
delegation NSEC3 can only deny the DS */
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
denialState = getDenial(denialMap, DNSName("a."), QType::DS, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NXQTYPE);
/* it can not be used to deny any RRs below that owner name either */
/* Add NSEC3 for the next closer */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3NarrowRecordToLW(DNSName("sub.a."), DNSName("."), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC3}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* add wildcard denial */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3NarrowRecordToLW(DNSName("*.a."), DNSName("."), {QType::A, QType::TXT, QType::RRSIG, QType::NSEC3}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
denialState = getDenial(denialMap, DNSName("sub.a."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
/* not even the DS! */
denialState = getDenial(denialMap, DNSName("sub.a."), QType::DS, false, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_denial_too_many_iterations)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/* adding a NSEC3 with more iterations that we support */
addNSEC3UnhashedRecordToLW(DNSName("a."), DNSName("."), "whatever", {QType::AAAA}, 600, records, g_maxNSEC3Iterations + 100);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
records.clear();
dState denialState = getDenial(denialMap, DNSName("a."), QType::A, false, true);
/* since we refuse to compute more than g_maxNSEC3Iterations iterations, it should be Insecure */
BOOST_CHECK_EQUAL(denialState, dState::INSECURE);
}
BOOST_AUTO_TEST_CASE(test_nsec3_insecure_delegation_denial)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
* RFC 5155 section 8.9:
* If there is an NSEC3 RR present in the response that matches the
* delegation name, then the validator MUST ensure that the NS bit is
* set and that the DS bit is not set in the Type Bit Maps field of the
* NSEC3 RR.
*/
/*
The RRSIG from "." denies the existence of any type at a.
NS should be set if it was proving an insecure delegation, let's check that
we correctly detect that it's not.
*/
addNSEC3UnhashedRecordToLW(DNSName("a."), DNSName("."), "whatever", {}, 600, records);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
records.clear();
/* Insecure because the NS is not set, so while it does
denies the DS, it can't prove an insecure delegation */
dState denialState = getDenial(denialMap, DNSName("a."), QType::DS, true, true);
BOOST_CHECK_EQUAL(denialState, dState::NODENIAL);
}
BOOST_AUTO_TEST_CASE(test_nsec3_ent_opt_out)
{
initSR();
testkeysset_t keys;
generateKeyMaterial(DNSName("."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
vector<DNSRecord> records;
sortedRecords_t recordContents;
vector<shared_ptr<RRSIGRecordContent>> signatureContents;
/*
* RFC 7129 section 5.1:
* A recently discovered corner case (see RFC Errata ID 3441 [Err3441])
* shows that not only those delegations remain insecure but also the
* empty non-terminal space that is derived from those delegations.
*/
/*
We have a NSEC3 proving that was.here does exist, and a second
one proving that ent.was.here. does not,
There NSEC3 are opt-out, so the result should be insecure (and we don't need
a wildcard proof).
*/
addNSEC3UnhashedRecordToLW(DNSName("was.here."), DNSName("."), "whatever", {}, 600, records, 10, true /* opt out */);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
ContentSigPair pair;
pair.records = recordContents;
pair.signatures = signatureContents;
cspmap_t denialMap;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* it can not be used to deny any RRs below that owner name either */
/* Add NSEC3 for the next closer */
recordContents.clear();
signatureContents.clear();
records.clear();
addNSEC3NarrowRecordToLW(DNSName("ent.was.here."), DNSName("."), {QType::RRSIG, QType::NSEC3}, 600, records, 10, true /* opt-out */);
recordContents.insert(records.at(0).d_content);
addRRSIG(keys, records, DNSName("."), 300);
signatureContents.push_back(getRR<RRSIGRecordContent>(records.at(1)));
pair.records = recordContents;
pair.signatures = signatureContents;
denialMap[std::make_pair(records.at(0).d_name, records.at(0).d_type)] = pair;
/* Insecure because the opt-out bit is set */
dState denialState = getDenial(denialMap, DNSName("ent.was.here."), QType::A, false, true);
BOOST_CHECK_EQUAL(denialState, dState::OPTOUT);
}
BOOST_AUTO_TEST_CASE(test_dnssec_rrsig_negcache_validity)
{
std::unique_ptr<SyncRes> sr;
initSR(sr, true);
setDNSSECValidation(sr, DNSSECMode::ValidateAll);
primeHints();
const DNSName target("com.");
testkeysset_t keys;
auto luaconfsCopy = g_luaconfs.getCopy();
luaconfsCopy.dsAnchors.clear();
generateKeyMaterial(g_rootdnsname, DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys, luaconfsCopy.dsAnchors);
generateKeyMaterial(DNSName("com."), DNSSECKeeper::ECDSA256, DNSSECKeeper::DIGEST_SHA256, keys);
g_luaconfs.setState(luaconfsCopy);
size_t queriesCount = 0;
const time_t fixedNow = sr->getNow().tv_sec;
sr->setAsyncCallback([target, &queriesCount, keys, fixedNow](const ComboAddress& ip, const DNSName& domain, int type, bool doTCP, bool sendRDQuery, int EDNS0Level, struct timeval* now, boost::optional<Netmask>& srcmask, boost::optional<const ResolveContext&> context, LWResult* res, bool* chained) {
queriesCount++;
DNSName auth = domain;
auth.chopOff();
if (type == QType::DS || type == QType::DNSKEY) {
return genericDSAndDNSKEYHandler(res, domain, auth, type, keys);
}
else {
setLWResult(res, RCode::NoError, true, false, true);
addRecordToLW(res, domain, QType::SOA, "pdns-public-ns1.powerdns.com. pieter\\.lexis.powerdns.com. 2017032301 10800 3600 604800 3600", DNSResourceRecord::AUTHORITY, 3600);
addRRSIG(keys, res->d_records, domain, 300);
addNSECRecordToLW(domain, DNSName("z."), {QType::NSEC, QType::RRSIG}, 600, res->d_records);
addRRSIG(keys, res->d_records, domain, 1, false, boost::none, boost::none, fixedNow);
return LWResult::Result::Success;
}
return LWResult::Result::Timeout;
});
vector<DNSRecord> ret;
int res = sr->beginResolve(target, QType(QType::A), QClass::IN, ret);
BOOST_CHECK_EQUAL(res, RCode::NoError);
BOOST_CHECK_EQUAL(sr->getValidationState(), vState::Secure);
BOOST_REQUIRE_EQUAL(ret.size(), 4U);
BOOST_CHECK_EQUAL(queriesCount, 4U);
/* check that the entry has not been negatively cached for longer than the RRSIG validity */
NegCache::NegCacheEntry ne;
BOOST_CHECK_EQUAL(g_negCache->size(), 1U);
BOOST_REQUIRE_EQUAL(g_negCache->get(target, QType(QType::A), sr->getNow(), ne), true);
BOOST_CHECK_EQUAL(ne.d_ttd, fixedNow + 1);
BOOST_CHECK_EQUAL(ne.d_validationState, vState::Secure);
BOOST_CHECK_EQUAL(ne.authoritySOA.records.size(), 1U);
BOOST_CHECK_EQUAL(ne.authoritySOA.signatures.size(), 1U);
BOOST_CHECK_EQUAL(ne.DNSSECRecords.records.size(), 1U);
BOOST_CHECK_EQUAL(ne.DNSSECRecords.signatures.size(), 1U);
/* again, to test the cache */
ret.clear();
res = sr->beginResolve(target, QType(QType::A), QClass::IN, ret);
BOOST_CHECK_EQUAL(res, RCode::NoError);
BOOST_CHECK_EQUAL(sr->getValidationState(), vState::Secure);
BOOST_REQUIRE_EQUAL(ret.size(), 4U);
BOOST_CHECK_EQUAL(queriesCount, 4U);
}
BOOST_AUTO_TEST_CASE(test_dnssec_rrsig_negcache_bogus_validity)
{