mirror of
https://github.com/NLnetLabs/unbound.git
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Fix auth nsec3 code (#1280)
- Fix NSEC3 code to not break on broken auth zones that include unsigned out of zone (above apex) data. Could lead to hang while trying to prove a wildcard answer. Reported by Dmitrii Kuvaiskii from Amazon Web Services. - Tests for NSEC3 auth zones with out of zone data.
This commit is contained in:
Yorgos Thessalonikefs
GitHub
parent
8190526250
commit
4e23523d1a
6 changed files with 523 additions and 20 deletions
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@ -2413,14 +2413,12 @@ az_find_wildcard(struct auth_zone* z, struct query_info* qinfo,
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if(!dname_subdomain_c(nm, z->name))
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return NULL; /* out of zone */
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while((node=az_find_wildcard_domain(z, nm, nmlen))==NULL) {
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/* see if we can go up to find the wildcard */
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if(nmlen == z->namelen)
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return NULL; /* top of zone reached */
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if(ce && nmlen == ce->namelen)
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return NULL; /* ce reached */
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if(dname_is_root(nm))
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return NULL; /* cannot go up */
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dname_remove_label(&nm, &nmlen);
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if(!dname_remove_label_limit_len(&nm, &nmlen, z->namelen))
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return NULL; /* can't go up */
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}
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return node;
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}
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@ -2442,9 +2440,8 @@ az_find_candidate_ce(struct auth_zone* z, struct query_info* qinfo,
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n = az_find_name(z, nm, nmlen);
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/* delete labels and go up on name */
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while(!n) {
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if(dname_is_root(nm))
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return NULL; /* cannot go up */
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dname_remove_label(&nm, &nmlen);
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if(!dname_remove_label_limit_len(&nm, &nmlen, z->namelen))
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return NULL; /* can't go up */
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n = az_find_name(z, nm, nmlen);
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}
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return n;
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@ -2456,8 +2453,7 @@ az_domain_go_up(struct auth_zone* z, struct auth_data* n)
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{
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uint8_t* nm = n->name;
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size_t nmlen = n->namelen;
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while(!dname_is_root(nm)) {
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dname_remove_label(&nm, &nmlen);
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while(dname_remove_label_limit_len(&nm, &nmlen, z->namelen)) {
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if((n=az_find_name(z, nm, nmlen)) != NULL)
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return n;
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}
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@ -2788,9 +2784,9 @@ az_find_nsec_cover(struct auth_zone* z, struct auth_data** node)
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/* but there could be glue, and if this is node, then it has no NSEC.
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* Go up to find nonglue (previous) NSEC-holding nodes */
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while((rrset=az_domain_rrset(*node, LDNS_RR_TYPE_NSEC)) == NULL) {
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if(dname_is_root(nm)) return NULL;
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if(nmlen == z->namelen) return NULL;
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dname_remove_label(&nm, &nmlen);
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if(!dname_remove_label_limit_len(&nm, &nmlen, z->namelen))
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return NULL; /* can't go up */
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/* adjust *node for the nsec rrset to find in */
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*node = az_find_name(z, nm, nmlen);
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}
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@ -3018,12 +3014,9 @@ az_nsec3_find_ce(struct auth_zone* z, uint8_t** cenm, size_t* cenmlen,
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struct auth_data* node;
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while((node = az_nsec3_find_exact(z, *cenm, *cenmlen,
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algo, iter, salt, saltlen)) == NULL) {
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if(*cenmlen == z->namelen) {
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/* next step up would take us out of the zone. fail */
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return NULL;
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}
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if(!dname_remove_label_limit_len(cenm, cenmlen, z->namelen))
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return NULL; /* can't go up */
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*no_exact_ce = 1;
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dname_remove_label(cenm, cenmlen);
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}
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return node;
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}
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@ -3340,7 +3333,8 @@ az_generate_wildcard_answer(struct auth_zone* z, struct query_info* qinfo,
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} else if(ce) {
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uint8_t* wildup = wildcard->name;
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size_t wilduplen= wildcard->namelen;
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dname_remove_label(&wildup, &wilduplen);
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if(!dname_remove_label_limit_len(&wildup, &wilduplen, z->namelen))
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return 0; /* can't go up */
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if(!az_add_nsec3_proof(z, region, msg, wildup,
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wilduplen, msg->qinfo.qname,
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msg->qinfo.qname_len, 0, insert_ce, 1, 0))
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@ -476,6 +476,23 @@ dname_test_removelabel(void)
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unit_assert( l == 1 );
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}
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/** test dname_remove_label_limit_len */
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static void
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dname_test_removelabellimitlen(void)
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{
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uint8_t* orig = (uint8_t*)"\007example\003com\000";
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uint8_t* n = orig;
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size_t l = 13;
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size_t lenlimit = 5; /* com.*/
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unit_show_func("util/data/dname.c", "dname_remove_label_limit_len");
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unit_assert(dname_remove_label_limit_len(&n, &l, lenlimit) == 1);
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unit_assert( n == orig+8 );
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unit_assert( l == 5 );
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unit_assert(dname_remove_label_limit_len(&n, &l, lenlimit) == 0);
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unit_assert( n == orig+8 );
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unit_assert( l == 5 );
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}
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/** test dname_signame_label_count */
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static void
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dname_test_sigcount(void)
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@ -1024,6 +1041,7 @@ void dname_test(void)
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dname_test_subdomain();
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dname_test_isroot();
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dname_test_removelabel();
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dname_test_removelabellimitlen();
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dname_test_sigcount();
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dname_test_iswild();
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dname_test_canoncmp();
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228
testdata/auth_nsec3_ent_with_out_of_zone_data.rpl
vendored
Normal file
228
testdata/auth_nsec3_ent_with_out_of_zone_data.rpl
vendored
Normal file
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@ -0,0 +1,228 @@
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; config options
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server:
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target-fetch-policy: "0 0 0 0 0"
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auth-zone:
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name: "unbound-auth-test.nlnetlabs.nl."
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## zonefile (or none).
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## zonefile: "example.com.zone"
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## master by IP address or hostname
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## can list multiple masters, each on one line.
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## master:
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## url for http fetch
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## url:
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## queries from downstream clients get authoritative answers.
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## for-downstream: yes
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for-downstream: yes
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## queries are used to fetch authoritative answers from this zone,
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## instead of unbound itself sending queries there.
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## for-upstream: yes
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for-upstream: yes
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## on failures with for-upstream, fallback to sending queries to
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## the authority servers
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## fallback-enabled: no
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## this line generates zonefile: \n"/tmp/xxx.example.com"\n
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zonefile:
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TEMPFILE_NAME unbound-auth-test.nlnetlabs.nl
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## this is the inline file /tmp/xxx.unbound-auth-test.nlnetlabs.nl
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## the tempfiles are deleted when the testrun is over.
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TEMPFILE_CONTENTS unbound-auth-test.nlnetlabs.nl
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;; Zone: unbound-auth-test.nlnetlabs.nl.
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;
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unbound-auth-test.nlnetlabs.nl. 3600 IN SOA ns.nlnetlabs.nl. ralph.nlnetlabs.nl. 1554201247 14400 3600 604800 3600
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unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG SOA 13 3 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. NLFcC2oet+HC+1dhT4D/2JJFIcMiRtTM81KwvT7u8ybF3iDE4bnyrILvQk8DsizpYKwk+D3J3tMC3TV5+//qFw==
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;; Out of zone record that shouldn't break NSEC3 proofs.
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;; There was a bug that would keep removing labels and use this out of zone
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;; record.
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nlnetlabs.nl. 3600 IN NS ns.nlnetlabs.nl.
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;
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unbound-auth-test.nlnetlabs.nl. 3600 IN NS ns.nlnetlabs.nl.
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unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NS 13 3 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. Gm0UF77ljiInG4/HZ6Tkzx7z9N45WwwmbBt9KxeN3z1BkdBLiy10Du71ZBFLP71b+USs1rv5SJQ0hteZFbl8sg==
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unbound-auth-test.nlnetlabs.nl. 3600 IN DNSKEY 256 3 13 S3Da9HqpFj0pEbI8WXOdkvN3vgZ6qxNSz4XyKkmWWAG28kq5T+/lWp36DUDvnMI9wJNuixzUHtgZ6oZoAaVrPg== ;{id = 15486 (zsk), size = 256b}
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unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG DNSKEY 13 3 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. 1cLFaDb6kP8KnRJujW1ieHUdS5Tgdv59TCZ+FloCRJMJBwQAow6UKAIY7HHlTb8IHTajyUrjlxX/dN8S/5VwuA==
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unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3PARAM 1 0 1 -
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unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3PARAM 13 3 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. GWgtJArNpfJ4ifoinUBUVRTlkk0CMemdozhMKY13dk3EQMP0jb4g49PcTAgEP2dBUs9efttQVQQpmFPyTGfN1w==
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tvdhfml24jp7cott1qijj9812qu9ibh3.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - 41pcah2j3fr8k99gj5pveh4igrjfc871 NS SOA RRSIG DNSKEY NSEC3PARAM ;{ flags: -, from: unbound-auth-test.nlnetlabs.nl. to: b.b.unbound-auth-test.nlnetlabs.nl.}
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tvdhfml24jp7cott1qijj9812qu9ibh3.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. DzwQTaZj4j29eHXEKllIFcq4yNWA7VMqkh8+gCrBO+GEek9+hGxL6ANsU0Hv6glyBmPDeYUZcy4xy0EEj1R4hQ==
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;
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;; Empty nonterminal: b.unbound-auth-test.nlnetlabs.nl.
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apejmh1fqds9gir0nnsf4d5gtno10tg1.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - dbs0aj50410urbvt3ghfr644n7h06gs5 ;{ flags: -, from: b.unbound-auth-test.nlnetlabs.nl. to: c.b.unbound-auth-test.nlnetlabs.nl.}
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apejmh1fqds9gir0nnsf4d5gtno10tg1.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. m9B0W8xDZF6ml/m8OujrZZBiF1O0wAeKciK/5FMT/hCjHR0hMrbXBPg/ZntpVJD/Pko2HcBvWKu87U721yTHyQ==
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;
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;; Empty nonterminal: a.b.unbound-auth-test.nlnetlabs.nl.
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toqivctpt4pdcp5g19neqt19fvtgbgeu.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - tvdhfml24jp7cott1qijj9812qu9ibh3 ;{ flags: -, from: a.b.unbound-auth-test.nlnetlabs.nl. to: unbound-auth-test.nlnetlabs.nl.}
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toqivctpt4pdcp5g19neqt19fvtgbgeu.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. Jr1oPPs+DGBVV13n4gG4AGVFsleItluLbtCIyQDcYZEA+e5JMkrLzfW3rXqXaUSUauR4iEu5FmTfs4GTsumdUw==
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;
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*.a.b.unbound-auth-test.nlnetlabs.nl. 3600 IN TXT "*.a.b"
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*.a.b.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG TXT 13 5 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. NrMUaNzZp88lXit/HLL/iDBHspDSfoM//K+/0VwUYRZjmVJQQHCHtHBGgR4NgrLi3ffvCAWq2LNGxDm+YMSl3g==
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jrtu61ssgd18lfjglqrbbs5b2vmbh6cl.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - k8r2bchsbehs5dbu5d6ivjfnmjb3jc8s TXT RRSIG ;{ flags: -, from: *.a.b.unbound-auth-test.nlnetlabs.nl. to: *.c.b.unbound-auth-test.nlnetlabs.nl.}
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jrtu61ssgd18lfjglqrbbs5b2vmbh6cl.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. kLIhE9+iz1OybJwXbtRJZst+Mk5u4OAtpZGWSwJUfqD6dXAk+h6msKAR18jpPeL7cCjXjIAKIv3x4oYRkl+uKw==
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;
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;; Empty nonterminal: b.b.unbound-auth-test.nlnetlabs.nl.
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41pcah2j3fr8k99gj5pveh4igrjfc871.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - apejmh1fqds9gir0nnsf4d5gtno10tg1 ;{ flags: -, from: b.b.unbound-auth-test.nlnetlabs.nl. to: b.unbound-auth-test.nlnetlabs.nl.}
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41pcah2j3fr8k99gj5pveh4igrjfc871.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. XlIjnuF313w0GXn6vymrAcsyuxZSaN6IShFjxQ5T2HUFePHBNvtRkL+TtMQZNlR8nTR3+MWcON0cOZIGjVCCjg==
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;
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*.b.b.unbound-auth-test.nlnetlabs.nl. 3600 IN TXT "*.b.b"
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*.b.b.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG TXT 13 5 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. FkS3ceWpoHyOKaa8OtywIl148Bwo0vkzBd263vqYe0puhuRa6IvNEk5ERdwfWt9eNEq+6IlizPT/dYxA2fXYXA==
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ft7dasbom0copm9e2ak9k151dj08kjfs.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - jrtu61ssgd18lfjglqrbbs5b2vmbh6cl TXT RRSIG ;{ flags: -, from: *.b.b.unbound-auth-test.nlnetlabs.nl. to: *.a.b.unbound-auth-test.nlnetlabs.nl.}
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ft7dasbom0copm9e2ak9k151dj08kjfs.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. 5QhLGohTRLQSGC8vstzDjqcwfrbOnLUG2OelSjvsZFy1smsWUxJBCQXQdx1+JX7xamZHlZESQtS+cELuZUqpvA==
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;
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;; Empty nonterminal: c.b.unbound-auth-test.nlnetlabs.nl.
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dbs0aj50410urbvt3ghfr644n7h06gs5.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - ft7dasbom0copm9e2ak9k151dj08kjfs ;{ flags: -, from: c.b.unbound-auth-test.nlnetlabs.nl. to: *.b.b.unbound-auth-test.nlnetlabs.nl.}
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dbs0aj50410urbvt3ghfr644n7h06gs5.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. hjk1foJWW68JK3O1Ktf0ZogoXVrMDw3mHVBBYTrpaBKX1gWR5icmJiOCYZWYx3z88PUnGkfH+kx4oDUjioqN+Q==
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;
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*.c.b.unbound-auth-test.nlnetlabs.nl. 3600 IN TXT "*.c.b"
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*.c.b.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG TXT 13 5 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. b7rFR5tlx5Y5SQqNdYBtfD6DrkNx9h79GCmnZfWrUzRz+A256k2v08IPRJDK+WxEHuYHjfNnVWxjRr9M1OW2Iw==
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k8r2bchsbehs5dbu5d6ivjfnmjb3jc8s.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - toqivctpt4pdcp5g19neqt19fvtgbgeu TXT RRSIG ;{ flags: -, from: *.c.b.unbound-auth-test.nlnetlabs.nl. to: a.b.unbound-auth-test.nlnetlabs.nl.}
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k8r2bchsbehs5dbu5d6ivjfnmjb3jc8s.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. 34BS1ajedCNdfXgUfxTyiAK1ichfFLshhJ3TnfplrUps0UsZaQLEG+EIlP4wTBtro2c6V8YCSmOuxuce4gYoDw==
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;
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TEMPFILE_END
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stub-zone:
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name: "."
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stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
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CONFIG_END
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SCENARIO_BEGIN Test authority zone with NSEC3 empty nonterminal
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; with exact match NSEC3 in existence (eg. not a CE-proof)
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; K.ROOT-SERVERS.NET.
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RANGE_BEGIN 0 100
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ADDRESS 193.0.14.129
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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. IN NS
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SECTION ANSWER
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. IN NS K.ROOT-SERVERS.NET.
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SECTION ADDITIONAL
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K.ROOT-SERVERS.NET. IN A 193.0.14.129
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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com. IN NS
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SECTION AUTHORITY
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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RANGE_END
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; a.gtld-servers.net.
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RANGE_BEGIN 0 100
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ADDRESS 192.5.6.30
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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com. IN NS
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SECTION ANSWER
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN NS
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SECTION AUTHORITY
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example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. IN A 1.2.3.44
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ENTRY_END
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RANGE_END
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; ns.example.net.
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RANGE_BEGIN 0 100
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ADDRESS 1.2.3.44
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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example.net. IN NS
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SECTION ANSWER
|
||||
example.net. IN NS ns.example.net.
|
||||
SECTION ADDITIONAL
|
||||
ns.example.net. IN A 1.2.3.44
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
ns.example.net. IN A
|
||||
SECTION ANSWER
|
||||
ns.example.net. IN A 1.2.3.44
|
||||
SECTION AUTHORITY
|
||||
example.net. IN NS ns.example.net.
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
ns.example.net. IN AAAA
|
||||
SECTION AUTHORITY
|
||||
example.net. IN NS ns.example.net.
|
||||
SECTION ADDITIONAL
|
||||
www.example.net. IN A 1.2.3.44
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
example.com. IN NS
|
||||
SECTION ANSWER
|
||||
example.com. IN NS ns.example.net.
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
www.example.com. IN A
|
||||
SECTION ANSWER
|
||||
www.example.com. IN A 10.20.30.40
|
||||
ENTRY_END
|
||||
RANGE_END
|
||||
|
||||
STEP 1 QUERY
|
||||
ENTRY_BEGIN
|
||||
REPLY RD DO
|
||||
SECTION QUESTION
|
||||
a.b.unbound-auth-test.nlnetlabs.nl. IN TXT
|
||||
ENTRY_END
|
||||
|
||||
; recursion happens here.
|
||||
STEP 20 CHECK_ANSWER
|
||||
ENTRY_BEGIN
|
||||
MATCH all
|
||||
REPLY QR AA RD RA DO NOERROR
|
||||
SECTION QUESTION
|
||||
a.b.unbound-auth-test.nlnetlabs.nl. IN TXT
|
||||
SECTION ANSWER
|
||||
SECTION AUTHORITY
|
||||
unbound-auth-test.nlnetlabs.nl. 3600 IN SOA ns.nlnetlabs.nl. ralph.nlnetlabs.nl. 1554201247 14400 3600 604800 3600
|
||||
unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG SOA 13 3 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. NLFcC2oet+HC+1dhT4D/2JJFIcMiRtTM81KwvT7u8ybF3iDE4bnyrILv Qk8DsizpYKwk+D3J3tMC3TV5+//qFw==
|
||||
toqivctpt4pdcp5g19neqt19fvtgbgeu.unbound-auth-test.nlnetlabs.nl. 3600 IN NSEC3 1 0 1 - TVDHFML24JP7COTT1QIJJ9812QU9IBH3
|
||||
toqivctpt4pdcp5g19neqt19fvtgbgeu.unbound-auth-test.nlnetlabs.nl. 3600 IN RRSIG NSEC3 13 4 3600 20190430103407 20190402103407 15486 unbound-auth-test.nlnetlabs.nl. Jr1oPPs+DGBVV13n4gG4AGVFsleItluLbtCIyQDcYZEA+e5JMkrLzfW3 rXqXaUSUauR4iEu5FmTfs4GTsumdUw==
|
||||
ENTRY_END
|
||||
|
||||
SCENARIO_END
|
||||
234
testdata/auth_nsec3_wild_with_out_of_zone_data.rpl
vendored
Normal file
234
testdata/auth_nsec3_wild_with_out_of_zone_data.rpl
vendored
Normal file
|
|
@ -0,0 +1,234 @@
|
|||
; config options
|
||||
server:
|
||||
target-fetch-policy: "0 0 0 0 0"
|
||||
|
||||
auth-zone:
|
||||
name: "test-ns-signed.dev.internet.nl."
|
||||
## zonefile (or none).
|
||||
## zonefile: "example.com.zone"
|
||||
## master by IP address or hostname
|
||||
## can list multiple masters, each on one line.
|
||||
## master:
|
||||
## url for http fetch
|
||||
## url:
|
||||
## queries from downstream clients get authoritative answers.
|
||||
## for-downstream: yes
|
||||
for-downstream: yes
|
||||
## queries are used to fetch authoritative answers from this zone,
|
||||
## instead of unbound itself sending queries there.
|
||||
## for-upstream: yes
|
||||
for-upstream: yes
|
||||
## on failures with for-upstream, fallback to sending queries to
|
||||
## the authority servers
|
||||
## fallback-enabled: no
|
||||
|
||||
## this line generates zonefile: \n"/tmp/xxx.example.com"\n
|
||||
zonefile:
|
||||
TEMPFILE_NAME test-ns-signed.dev.internet.nl
|
||||
## this is the inline file /tmp/xxx.test-ns-signed.dev.internet.nl
|
||||
## the tempfiles are deleted when the testrun is over.
|
||||
TEMPFILE_CONTENTS test-ns-signed.dev.internet.nl
|
||||
test-ns-signed.dev.internet.nl. 3600 IN SOA ns.nlnetlabs.nl. ralph.nlnetlabs.nl. 4 14400 3600 604800 3600
|
||||
test-ns-signed.dev.internet.nl. 3600 IN RRSIG SOA 8 4 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. ybb0Hc7NC+QOFEEv4cX2+Umlk+miiOAHmeP2Uwvg6lqfxkk+3g7yWBEKMinXjLKz0odWZ6fki6M/3yBPQX8SV0OCRY5gYvAHAjbxAIHozIM+5iwOkRQhNF1DRgQ3BLjL93f6T5e5Z4y1812iOpu4GYswXW/UTOZACXz2UiaCPAg=
|
||||
;; Out of zone record that shouldn't break NSEC3 proofs.
|
||||
;; There was a bug that would keep removing labels and use this out of zone
|
||||
;; record.
|
||||
dev.internet.nl. 3600 IN NS ns.test-ns-signed.dev.internet.nl.
|
||||
test-ns-signed.dev.internet.nl. 3600 IN NS ns.test-ns-signed.dev.internet.nl.
|
||||
test-ns-signed.dev.internet.nl. 3600 IN RRSIG NS 8 4 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. KqiwTF3hKm1ZHGbgx6MVzZYHlS1p7+Xrikx4izMHFbWiD6ki6lrJBJsnH9j/hH1cwHxjXslOeJh0hdBdbn8la0meZPsebOyUbEjoLPzRLzKNLDBuA4BUJnRGQJy21CX7XooXAMAmR8YFipO8CojI9EogU2m2o9YkfbpacFWQoTk=
|
||||
test-ns-signed.dev.internet.nl. 3600 IN DNSKEY 256 3 8 AwEAAc6c8tpMXBSOFLu/9n4aUUDK43wN4B7A2UDqZi0IOkyptxWCFghleyZeeN5uq6p9MoUt8lS73mFmIYC0ux5zBO3uVaJQ9u+00qRAEVg/RgBwa58y2f/zNtFV/f7mBSPcPTiEjUh0bwHSiTvUn/8JkrvjyAcbQMO0YOsRof5q6tzl ;{id = 32784 (zsk), size = 1024b}
|
||||
test-ns-signed.dev.internet.nl. 3600 IN DNSKEY 257 3 8 AwEAAdC0hBJP1U8lbZ6JFXn0ouK6VipiraN7I8oog62SuEd/fqAupys7A/Ih6WK/UoJorjlnccEL8euNMaS4kNogvoBrFx8ciIWKcbot5mtwc4WDr3cnR+HIZNCUFVkIxsMqE7HCD0yn0zhkB60shED+ZHs8zpyU+cjnsOSizxOnIY+F ;{id = 54502 (ksk), size = 1024b}
|
||||
test-ns-signed.dev.internet.nl. 3600 IN RRSIG DNSKEY 8 4 3600 20190205132351 20190108132351 54502 test-ns-signed.dev.internet.nl. X3qN+plfjf45FA4pr/tcUqUCR9ajDqwtNe4TS19WOJogVL/Gf/N5/ToOCrs3s+a7VrJl58WvSJquDM8xAS8f4oJggKgHFhopce8tMTGRxkRvJo4y+tt3vCveh/zjHLAnbOaBGA4CJ/IPhRqzHzcX/SjSv0EACWd6XpQIWogRv6c=
|
||||
test-ns-signed.dev.internet.nl. 3600 IN NSEC3PARAM 1 0 1 -
|
||||
test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3PARAM 8 4 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. A/1xUGO46uIz+9vjPGfWVD99akwU9bd/UlnVG9LPfoTzG7TMWSoZ4ksg8k8ub8K1TrkDmQokNHSW0Gt6qwoRh17c+p1h/SFlDVL83wgTc4NqG43OQjgGU9RV035XU+VESlO3lavifhlu8rHWBJTlhiXcMGq6H+zvoz4sx9p5GNM=
|
||||
93stp7o7i5n9gb83uu7vv6h8qltk14ig.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - fee0c2kfhi6bnljce6vehaenqq3pbupu NS SOA RRSIG DNSKEY NSEC3PARAM
|
||||
93stp7o7i5n9gb83uu7vv6h8qltk14ig.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. YoTRDQ7sSvERcY1WwAH4oRRR7DmaAwA8/H70jdMeSU4wsnM/VM03kDcc2sgq5edmHiZoTWnq7nEb/1Y7Ro0YrqTUQdYFZvXi6UjZQrKI9nqAGnhdXZWlZJHmYpn2+2Emd+bYHkwvKaPnfnnKjUoGVBH8Hly0HBYKPUF1/viquB0=
|
||||
kl94uofq16t2vlq0bmampf6e4o9k5hbi.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - 7ag3p2pfrvq09dpn63cvga8ub1rnrrg1
|
||||
kl94uofq16t2vlq0bmampf6e4o9k5hbi.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. NI5zJ/k1kPVZ1abms5OoME/wazb77Ltduyk6ZevAnt4tKydZYwSsjEd0Ixknw9xnakCABn5rAYEXctARN0KCwCkNHR7TYlTAJT14hlDYjbad2u2HT9L1kzAnfj3BeLZl/LRADeMbTtzrkTSF3Dnezurb94fMnUnKt2hPfQfj560=
|
||||
fee0c2kfhi6bnljce6vehaenqq3pbupu.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv
|
||||
fee0c2kfhi6bnljce6vehaenqq3pbupu.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. WIb3ISP1nlafbyWoWa4z7sG5IS+V86PyvEMHdD/64hgsFkrCu483XK7VNnBz28SL/631JXA1R19O+UxeWhTUyctp8QSt6cEZcMPY8b7yG97rNFNvhSw75rSXXt+JwgIYHPHQV5oqPtVmEpQM5SfJd+hs+Nn1bJcWB3UaESNNAMQ=
|
||||
*.a.b.test-ns-signed.dev.internet.nl. 3600 IN TXT "a"
|
||||
*.a.b.test-ns-signed.dev.internet.nl. 3600 IN RRSIG TXT 8 6 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. eNcJkQXdTO1z21od0sXbgqtABhhr/9tNC/Zx8zYbhXkfj7rufN71yk9xqgu6TG0MeJV26ISrqIGRVFJFmTRvO1LLxoKkEPhqe+08nqRztxXZajCV+dDeFoGIDcXJg6tAxB+MJznkKDtZPpIWvyt1WwdYfcMrGtE9AmR3K1/P/xE=
|
||||
7ag3p2pfrvq09dpn63cvga8ub1rnrrg1.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - 93stp7o7i5n9gb83uu7vv6h8qltk14ig TXT RRSIG
|
||||
7ag3p2pfrvq09dpn63cvga8ub1rnrrg1.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. gtxoiTa3FRUqoRLvkWSxmWQ+DfijVd26gpKH3+GmGIcNB/sr/Cf8kERRwVVHvgzYIcvdJcys5b2LUXnZJwcdAlx7efZPWgNZzWxJrw6ES25LCWJOrp31isWn9FlAZGIbnpyEXxD2apBSmtyPnKbTgU6lHHS9jrsYHu4G8Zouv3k=
|
||||
ns.test-ns-signed.dev.internet.nl. 3600 IN A 185.49.141.11
|
||||
ns.test-ns-signed.dev.internet.nl. 3600 IN RRSIG A 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. F9sXEVAmlRn+/84WbuvegiCwstNxMDMQLl0Obv2CTPpee4U6psbmXrlzczjjjkE6aLjsIHYdcXCzEWTrmukT+V9jzaGPRJvxNvC0ASWyzggAoh0Z++Hl4cVa9587o6I9ODayehFI9Pgdem+RVdb4zlWuzi9FmKXgeTlgWN54tPg=
|
||||
ns.test-ns-signed.dev.internet.nl. 3600 IN AAAA 2a04:b900:0:100::11
|
||||
ns.test-ns-signed.dev.internet.nl. 3600 IN RRSIG AAAA 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. F1XRrx/QgfzJ1RS7d0m23QoIPx1G8WL1SrlTOm7pk5vWTL07w7HEw2TETblkjnitJGKfN9ebsIum/cDPUZc3UqLkguP2UCWpePnlllTJuwmG0Z+wyINIR4xF4PQlqttvzThBkD2JKWb/o0W8dQyXTj+jJ1vCZ0NjjA2N4+iJIQE=
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - kl94uofq16t2vlq0bmampf6e4o9k5hbi A AAAA RRSIG
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. xLysIqn3r3rdHE3GvwVjZwUyuFClhkhgrQdwyc66RuHKE3MfSuhVr9cHTCJzhipF5TwQTbUpLOr74r99bzdiIY8Xkgjy2M0nc76v1ObSGJdPPjGTevbhDOnavUURwOR/q0NqqO2iPrgFjOVMZ+8uwRJtCty2iAVZfVG+qDzs8hU=
|
||||
TEMPFILE_END
|
||||
|
||||
stub-zone:
|
||||
name: "."
|
||||
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
|
||||
CONFIG_END
|
||||
|
||||
SCENARIO_BEGIN Test authority zone with NSEC3 wildcard
|
||||
|
||||
; K.ROOT-SERVERS.NET.
|
||||
RANGE_BEGIN 0 100
|
||||
ADDRESS 193.0.14.129
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
. IN NS
|
||||
SECTION ANSWER
|
||||
. IN NS K.ROOT-SERVERS.NET.
|
||||
SECTION ADDITIONAL
|
||||
K.ROOT-SERVERS.NET. IN A 193.0.14.129
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode subdomain
|
||||
ADJUST copy_id copy_query
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
com. IN NS
|
||||
SECTION AUTHORITY
|
||||
com. IN NS a.gtld-servers.net.
|
||||
SECTION ADDITIONAL
|
||||
a.gtld-servers.net. IN A 192.5.6.30
|
||||
ENTRY_END
|
||||
RANGE_END
|
||||
|
||||
; a.gtld-servers.net.
|
||||
RANGE_BEGIN 0 100
|
||||
ADDRESS 192.5.6.30
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
com. IN NS
|
||||
SECTION ANSWER
|
||||
com. IN NS a.gtld-servers.net.
|
||||
SECTION ADDITIONAL
|
||||
a.gtld-servers.net. IN A 192.5.6.30
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode subdomain
|
||||
ADJUST copy_id copy_query
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
example.com. IN NS
|
||||
SECTION AUTHORITY
|
||||
example.com. IN NS ns.example.com.
|
||||
SECTION ADDITIONAL
|
||||
ns.example.com. IN A 1.2.3.44
|
||||
ENTRY_END
|
||||
RANGE_END
|
||||
|
||||
; ns.example.net.
|
||||
RANGE_BEGIN 0 100
|
||||
ADDRESS 1.2.3.44
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
example.net. IN NS
|
||||
SECTION ANSWER
|
||||
example.net. IN NS ns.example.net.
|
||||
SECTION ADDITIONAL
|
||||
ns.example.net. IN A 1.2.3.44
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
ns.example.net. IN A
|
||||
SECTION ANSWER
|
||||
ns.example.net. IN A 1.2.3.44
|
||||
SECTION AUTHORITY
|
||||
example.net. IN NS ns.example.net.
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
ns.example.net. IN AAAA
|
||||
SECTION AUTHORITY
|
||||
example.net. IN NS ns.example.net.
|
||||
SECTION ADDITIONAL
|
||||
www.example.net. IN A 1.2.3.44
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
example.com. IN NS
|
||||
SECTION ANSWER
|
||||
example.com. IN NS ns.example.net.
|
||||
ENTRY_END
|
||||
|
||||
ENTRY_BEGIN
|
||||
MATCH opcode qtype qname
|
||||
ADJUST copy_id
|
||||
REPLY QR NOERROR
|
||||
SECTION QUESTION
|
||||
www.example.com. IN A
|
||||
SECTION ANSWER
|
||||
www.example.com. IN A 10.20.30.40
|
||||
ENTRY_END
|
||||
RANGE_END
|
||||
|
||||
STEP 1 QUERY
|
||||
ENTRY_BEGIN
|
||||
REPLY RD DO
|
||||
SECTION QUESTION
|
||||
something.a.b.test-ns-signed.dev.internet.nl. IN TXT
|
||||
ENTRY_END
|
||||
|
||||
; recursion happens here.
|
||||
STEP 20 CHECK_ANSWER
|
||||
ENTRY_BEGIN
|
||||
MATCH all
|
||||
REPLY QR AA RD RA DO NOERROR
|
||||
SECTION QUESTION
|
||||
something.a.b.test-ns-signed.dev.internet.nl. IN TXT
|
||||
SECTION ANSWER
|
||||
something.a.b.test-ns-signed.dev.internet.nl. IN TXT "a"
|
||||
something.a.b.test-ns-signed.dev.internet.nl. 3600 IN RRSIG TXT 8 6 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. eNcJkQXdTO1z21od0sXbgqtABhhr/9tNC/Zx8zYbhXkfj7rufN71yk9xqgu6TG0MeJV26ISrqIGRVFJFmTRvO1LLxoKkEPhqe+08nqRztxXZajCV+dDeFoGIDcXJg6tAxB+MJznkKDtZPpIWvyt1WwdYfcMrGtE9AmR3K1/P/xE=
|
||||
SECTION AUTHORITY
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - KL94UOFQ16T2VLQ0BMAMPF6E4O9K5HBI A AAAA RRSIG
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. xLysIqn3r3rdHE3GvwVjZwUyuFClhkhgrQdwyc66RuHKE3MfSuhVr9cHTCJzhipF5TwQTbUpLOr74r99bzdiIY8Xkgjy2M0nc76v1ObSGJdPPjGTevbhDOnavUURwOR/q0NqqO2iPrgFjOVMZ+8uwRJtCty2iAVZfVG+qDzs8hU=
|
||||
ENTRY_END
|
||||
|
||||
; Check that the reply for a wildcard nodata answer contains the NSEC3s.
|
||||
; qname denial NSEC3, closest encloser NSEC3, and type bitmap NSEC3.
|
||||
STEP 30 QUERY
|
||||
ENTRY_BEGIN
|
||||
REPLY RD DO
|
||||
SECTION QUESTION
|
||||
something.a.b.test-ns-signed.dev.internet.nl. IN AAAA
|
||||
ENTRY_END
|
||||
|
||||
STEP 40 CHECK_ANSWER
|
||||
ENTRY_BEGIN
|
||||
MATCH all
|
||||
REPLY QR AA RD RA DO NOERROR
|
||||
SECTION QUESTION
|
||||
something.a.b.test-ns-signed.dev.internet.nl. IN AAAA
|
||||
SECTION ANSWER
|
||||
SECTION AUTHORITY
|
||||
test-ns-signed.dev.internet.nl. 3600 IN SOA ns.nlnetlabs.nl. ralph.nlnetlabs.nl. 4 14400 3600 604800 3600
|
||||
test-ns-signed.dev.internet.nl. 3600 IN RRSIG SOA 8 4 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. ybb0Hc7NC+QOFEEv4cX2+Umlk+miiOAHmeP2Uwvg6lqfxkk+3g7yWBEKMinXjLKz0odWZ6fki6M/3yBPQX8SV0OCRY5gYvAHAjbxAIHozIM+5iwOkRQhNF1DRgQ3BLjL93f6T5e5Z4y1812iOpu4GYswXW/UTOZACXz2UiaCPAg= ;{id = 32784}
|
||||
7ag3p2pfrvq09dpn63cvga8ub1rnrrg1.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - 93stp7o7i5n9gb83uu7vv6h8qltk14ig TXT RRSIG
|
||||
7ag3p2pfrvq09dpn63cvga8ub1rnrrg1.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. gtxoiTa3FRUqoRLvkWSxmWQ+DfijVd26gpKH3+GmGIcNB/sr/Cf8kERRwVVHvgzYIcvdJcys5b2LUXnZJwcdAlx7efZPWgNZzWxJrw6ES25LCWJOrp31isWn9FlAZGIbnpyEXxD2apBSmtyPnKbTgU6lHHS9jrsYHu4G8Zouv3k= ;{id = 32784}
|
||||
fee0c2kfhi6bnljce6vehaenqq3pbupu.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv
|
||||
fee0c2kfhi6bnljce6vehaenqq3pbupu.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. WIb3ISP1nlafbyWoWa4z7sG5IS+V86PyvEMHdD/64hgsFkrCu483XK7VNnBz28SL/631JXA1R19O+UxeWhTUyctp8QSt6cEZcMPY8b7yG97rNFNvhSw75rSXXt+JwgIYHPHQV5oqPtVmEpQM5SfJd+hs+Nn1bJcWB3UaESNNAMQ= ;{id = 32784}
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN NSEC3 1 0 1 - kl94uofq16t2vlq0bmampf6e4o9k5hbi A AAAA RRSIG
|
||||
i6pi4e3o98e7vtkpjfhqn7g77d3mjcnv.test-ns-signed.dev.internet.nl. 3600 IN RRSIG NSEC3 8 5 3600 20190205132351 20190108132351 32784 test-ns-signed.dev.internet.nl. xLysIqn3r3rdHE3GvwVjZwUyuFClhkhgrQdwyc66RuHKE3MfSuhVr9cHTCJzhipF5TwQTbUpLOr74r99bzdiIY8Xkgjy2M0nc76v1ObSGJdPPjGTevbhDOnavUURwOR/q0NqqO2iPrgFjOVMZ+8uwRJtCty2iAVZfVG+qDzs8hU= ;{id = 32784}
|
||||
ENTRY_END
|
||||
|
||||
SCENARIO_END
|
||||
|
|
@ -728,7 +728,7 @@ dname_is_root(uint8_t* dname)
|
|||
return (len == 0);
|
||||
}
|
||||
|
||||
void
|
||||
void
|
||||
dname_remove_label(uint8_t** dname, size_t* len)
|
||||
{
|
||||
size_t lablen;
|
||||
|
|
@ -742,7 +742,23 @@ dname_remove_label(uint8_t** dname, size_t* len)
|
|||
*dname += lablen+1;
|
||||
}
|
||||
|
||||
void
|
||||
int
|
||||
dname_remove_label_limit_len(uint8_t** dname, size_t* len, size_t lenlimit)
|
||||
{
|
||||
size_t lablen;
|
||||
log_assert(dname && *dname && len);
|
||||
lablen = (*dname)[0];
|
||||
log_assert(!LABEL_IS_PTR(lablen));
|
||||
log_assert(*len > lablen);
|
||||
if(lablen == 0)
|
||||
return 0; /* do not modify root label */
|
||||
if(*len - (lablen + 1) < lenlimit) return 0;
|
||||
*len -= lablen+1;
|
||||
*dname += lablen+1;
|
||||
return 1;
|
||||
}
|
||||
|
||||
void
|
||||
dname_remove_labels(uint8_t** dname, size_t* len, int n)
|
||||
{
|
||||
int i;
|
||||
|
|
|
|||
|
|
@ -262,10 +262,23 @@ int dname_is_root(uint8_t* dname);
|
|||
* Snip off first label from a dname, returning the parent zone.
|
||||
* @param dname: from what to strip off. uncompressed wireformat.
|
||||
* @param len: length, adjusted to become less.
|
||||
* return stripped off, or "." if input was ".".
|
||||
* return dname stripped off, or "." if input was ".".
|
||||
*/
|
||||
void dname_remove_label(uint8_t** dname, size_t* len);
|
||||
|
||||
/**
|
||||
* Same as dname_remove_label but fails if removal would surpass lenlimit.
|
||||
* If no failure,
|
||||
* snip off first label from a dname, returning the parent zone.
|
||||
* @param dname: from what to strip off. uncompressed wireformat.
|
||||
* @param len: length, adjusted to become less.
|
||||
* @param lenlimit: length limit that we can't surpass (usually the zone apex).
|
||||
* return
|
||||
* o 1, and dname stripped off, or "." if input was ".", else
|
||||
* o 0, if going up would surpass lenlimit.
|
||||
*/
|
||||
int dname_remove_label_limit_len(uint8_t** dname, size_t* len, size_t lenlimit);
|
||||
|
||||
/**
|
||||
* Snip off first N labels from a dname, returning the parent zone.
|
||||
* @param dname: from what to strip off. uncompressed wireformat.
|
||||
|
|
|
|||
Loading…
Reference in a new issue