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dnssec lame detection.

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git-svn-id: file:///svn/unbound/trunk@714 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2007-10-22 15:25:37 +00:00
parent b247774236
commit 633daf4bc7
17 changed files with 1189 additions and 27 deletions
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2
Makefile.in
View file

@ -99,7 +99,7 @@ $(BUILD)%.o: $(srcdir)/%.c
all: $(COMMON_OBJ) unbound unbound-checkconf
tests: unittest testbound lock-verify pktview signit memstats
tests: all unittest testbound lock-verify pktview signit memstats
test: tests
bash testcode/do-tests.sh

5
doc/Changelog
View file

@ -3,6 +3,11 @@
out test cases.
- ISO C compat changes.
- detect RA-no-AA lameness, as LAME.
- DNSSEC-lameness detection, as LAME.
See notes in requirements.txt for choices made.
- tests for lameness detection.
- added all to make test target; need unbound for fwd tests.
- testbound does not pollute /etc/unbound.
19 October 2007: Wouter
- added configure (and its files) to svn, so that the trunk is easier

19
doc/requirements.txt
View file

@ -121,3 +121,22 @@ o The harden-glue feature, when yes all out of zone glue is deleted, when
as more glue is present for the recursive service to use. The feature
is implemented so as to minimise the security risk, while trying to
keep this performance gain.
o The method by which dnssec-lameness is detected is not secure. DNSSEC lame
is when a server has the zone in question, but lacks dnssec data, such as
signatures. The method to detect dnssec lameness looks at nonvalidated
data from the parent of a zone. This can be used, by spoofing the parent,
to create a false sense of dnssec-lameness in the child, or a false sense
or dnssec-non-lameness in the child. The first results in the server marked
lame, and not used for 900 seconds, and the second will result in a
validator failure (SERVFAIL again), when the query is validated later on.
Concluding, a spoof of the parent delegation can be used for many cases
of denial of service. I.e. a completely different NS set could be returned,
or the information withheld. All of these alterations can be caught by
the validator if the parent is signed, and result in 900 seconds bogus.
The dnssec-lameness detection is used to detect operator failures,
before the validator will properly verify the messages.
Also for zones for which no chain of trust exists, but a DS is given by the
parent, dnssec-lameness detection enables. This delivers dnnsec to our
clients when possible (for client validators).

35
iterator/iter_utils.c
View file

@ -58,6 +58,7 @@
#include "util/data/dname.h"
#include "util/random.h"
#include "util/fptr_wlist.h"
#include "validator/val_anchor.h"
/** fillup fetch policy array */
static void
@ -367,3 +368,37 @@ iter_dp_is_useless(struct module_qstate* qstate, struct delegpt* dp)
}
return 1;
}
int
iter_indicates_dnssec(struct module_env* env, struct delegpt* dp,
struct dns_msg* msg)
{
/* information not available, !env->anchors can be common */
if(!env || !env->anchors || !dp || !dp->name || !msg || !msg->rep)
return 0;
/* a trust anchor exists with this name, RRSIGs expected */
if(anchor_find(env->anchors, dp->name, dp->namelabs, dp->namelen,
msg->qinfo.qclass))
return 1;
/* see if DS rrset was given, in AUTH section */
if(reply_find_rrset_section_ns(msg->rep, dp->name, dp->namelen,
LDNS_RR_TYPE_DS, msg->qinfo.qclass))
return 1;
return 0;
}
int
iter_msg_has_dnssec(struct dns_msg* msg)
{
size_t i;
if(!msg || !msg->rep)
return 0;
for(i=0; i<msg->rep->an_numrrsets + msg->rep->ns_numrrsets; i++) {
if(((struct packed_rrset_data*)msg->rep->rrsets[i]->
entry.data)->rrsig_count > 0)
return 1;
}
/* empty message has no DNSSEC info, with DNSSEC the reply is
* not empty (NSEC) */
return 0;
}

22
iterator/iter_utils.h
View file

@ -136,4 +136,26 @@ void iter_mark_cycle_targets(struct module_qstate* qstate, struct delegpt* dp);
*/
int iter_dp_is_useless(struct module_qstate* qstate, struct delegpt* dp);
/**
* See if delegation is expected to have DNSSEC information (RRSIGs) in
* its answers, or not. Inspects delegation point (name), trust anchors,
* and delegation message (DS RRset) to determine this.
* @param env: module env with trust anchors.
* @param dp: delegation point.
* @param msg: delegation message, with DS if a secure referral.
* @return 1 if dnssec is expected, 0 if not.
*/
int iter_indicates_dnssec(struct module_env* env, struct delegpt* dp,
struct dns_msg* msg);
/**
* See if a message contains DNSSEC.
* This is examined by looking for RRSIGs. With DNSSEC a valid answer,
* nxdomain, nodata, referral or cname reply has RRSIGs in answer or auth
* sections, sigs on answer data, SOA, DS, or NSEC/NSEC3 records.
* @param msg: message to examine.
* @return true if DNSSEC information was found.
*/
int iter_msg_has_dnssec(struct dns_msg* msg);
#endif /* ITERATOR_ITER_UTILS_H */

23
iterator/iterator.c
View file

@ -114,6 +114,7 @@ iter_new(struct module_qstate* qstate, int id)
iq->referral_count = 0;
iq->wait_priming_stub = 0;
iq->refetch_glue = 0;
iq->dnssec_expected = 0;
iq->chase_flags = qstate->query_flags;
/* Start with the (current) qname. */
iq->qchase = qstate->qinfo;
@ -730,8 +731,8 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
}
while(1) {
/* Lookup the delegation in the cache. If null, then the cache needs
* to be primed for the qclass. */
/* Lookup the delegation in the cache. If null, then the
* cache needs to be primed for the qclass. */
iq->dp = dns_cache_find_delegation(qstate->env, delname,
delnamelen, iq->qchase.qtype, iq->qchase.qclass,
qstate->region, &iq->deleg_msg, (uint32_t)time(NULL));
@ -800,6 +801,11 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
verbose(VERB_ALGO, "cache delegation returns delegpt");
delegpt_log(VERB_ALGO, iq->dp);
/* if the cache reply dp equals a validation anchor or msg has DS,
* then DNSSEC RRSIGs are expected in the reply */
iq->dnssec_expected = iter_indicates_dnssec(qstate->env, iq->dp,
iq->deleg_msg);
/* Reset the RD flag. If this is a query restart, then the RD
* will have been turned off. */
if(qstate->query_flags & BIT_RD)
@ -1186,6 +1192,14 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
* differently. No queries should be sent elsewhere */
type = RESPONSE_TYPE_ANSWER;
}
if(!(iq->chase_flags&BIT_RD) && type != RESPONSE_TYPE_LAME &&
type != RESPONSE_TYPE_THROWAWAY &&
type != RESPONSE_TYPE_UNTYPED && iq->dnssec_expected) {
/* a possible answer, see if it is missing DNSSEC */
/* but not when forwarding, so we dont mark fwder lame */
if(!iter_msg_has_dnssec(iq->response))
type = RESPONSE_TYPE_LAME;
}
/* handle each of the type cases */
if(type == RESPONSE_TYPE_ANSWER) {
@ -1225,6 +1239,10 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
delegpt_log(VERB_ALGO, iq->dp);
/* Count this as a referral. */
iq->referral_count++;
/* see if the next dp is a trust anchor, or a DS was sent
* along, indicating dnssec is expected for next zone */
iq->dnssec_expected = iter_indicates_dnssec(qstate->env,
iq->dp, iq->response);
/* stop current outstanding queries.
* FIXME: should the outstanding queries be waited for and
@ -1264,6 +1282,7 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
/* Clear the query state, since this is a query restart. */
iq->deleg_msg = NULL;
iq->dp = NULL;
iq->dnssec_expected = 0;
/* Note the query restart. */
iq->query_restart_count++;

7
iterator/iterator.h
View file

@ -225,6 +225,13 @@ struct iter_qstate {
/** the number of times this query as followed a referral. */
int referral_count;
/**
* expected dnssec information for this iteration step.
* If dnssec rrsigs are expected and not given, the server is marked
* lame (dnssec-lame).
*/
int dnssec_expected;
/**
* This is flag that, if true, means that this event is
* waiting for a stub priming query.

2
testcode/testbound.c
View file

@ -135,7 +135,9 @@ setup_config(FILE* in, char* configfile, int* lineno,
if(!cfg) fatal_exit("could not open %s: %s",
configfile, strerror(errno));
line[MAX_LINE_LEN-1] = 0;
/* some basic settings to not pollute the host system */
fprintf(cfg, "server: use-syslog: no\n");
fprintf(cfg, " directory: \"\"\n");
while(fgets(line, MAX_LINE_LEN-1, in)) {
parse = line;
(*lineno)++;

298
testdata/iter_dnsseclame_ds.rpl vendored Normal file
View file

@ -0,0 +1,298 @@
; config options
server:
trust-anchor: "example.com. 3600 IN DS 2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
val-override-date: "20070916134226"
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test dnssec-lame detection at ds point.
; 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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION AUTHORITY
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
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
www.sub.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.55
ENTRY_END
RANGE_END
; e.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.12.94.30
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
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 AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. 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 AA 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 AA NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.44
ENTRY_END
; response to DNSKEY priming query
; sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
sub.example.com. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
sub.example.com. 3600 IN RRSIG DNSKEY 5 3 3600 20070926134150 20070829134150 30899 sub.example.com. uNGp99iznjD7oOX02XnQbDnbg75UwBHRvZSKYUorTKvPUnCWMHKdRsQ+mf+Fx3GZ+Fz9BVjoCmQqpnfgXLEYqw== ;{id = 30899}
SECTION AUTHORITY
; no NS set. not needed for this test.
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ns.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. UF7shD/gt1FOp2UHgLTNbPzVykklSXFMEtJ1xD+Hholwf/PIzd7zoaIttIYibNa4fUXCqMg22H9P7MRhfmFe6g== ;{id = 30899}
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
www.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. 0DqqRfRtm7VSEQ4mmBbzrKRqQAay3JAE8DPDGmjtokrrjN9F1G/HxozDV7bjdIh2EChlQea8FPwf/GepJMUVxg== ;{id = 30899}
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.55
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION ANSWER
ns.example.com. IN A 1.2.3.55
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
ENTRY_END
; fine DNSKEY response.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
example.com. 3600 IN RRSIG DNSKEY DSA 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFBQRtlR4BEv9ohi+PGFjp+AHsJuHAhRCvz0shggvnvI88DFnBDCczHUcVA== ;{id = 2854}
SECTION AUTHORITY
example.com. IN NS ns.example.com.
example.com. 3600 IN RRSIG NS 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFQCN+qHdJxoI/2tNKwsb08pra/G7aAIUAWA5sDdJTbrXA1/3OaesGBAO3sI= ;{id = 2854}
ENTRY_END
; correct delegation with DS
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
SECTION AUTHORITY
sub.example.com. IN NS ns.sub.example.com.
sub.example.com. IN NS ns.example.net.
sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
sub.example.com. 3600 IN RRSIG DS 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCW3ix0GD4BSvNLWIbROCJt5DAW9AhRt/kg9kBKJ20UBUdumrBUHqnskdA== ;{id = 2854}
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ENTRY_END
; response for delegation to sub.example.com.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
SECTION AUTHORITY
sub.example.com. IN NS ns.sub.example.com.
sub.example.com. IN NS ns.example.net.
sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
sub.example.com. 3600 IN RRSIG DS 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCW3ix0GD4BSvNLWIbROCJt5DAW9AhRt/kg9kBKJ20UBUdumrBUHqnskdA== ;{id = 2854}
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ENTRY_END
RANGE_END
; This server is DNSSEC LAME!
; ns.sub.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.6
; response to DNSKEY priming query
; sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
sub.example.com. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
SECTION AUTHORITY
sub.example.com. IN NS ns.sub.example.com.
sub.example.com. IN NS ns.example.net.
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD DO
SECTION QUESTION
www.sub.example.com. IN A
ENTRY_END
; recursion happens here.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA AD DO NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
www.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. 0DqqRfRtm7VSEQ4mmBbzrKRqQAay3JAE8DPDGmjtokrrjN9F1G/HxozDV7bjdIh2EChlQea8FPwf/GepJMUVxg== ;{id = 30899}
ENTRY_END
SCENARIO_END

293
testdata/iter_dnsseclame_ds_ok.rpl vendored Normal file
View file

@ -0,0 +1,293 @@
; config options
server:
trust-anchor: "example.com. 3600 IN DS 2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
val-override-date: "20070916134226"
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test dnssec-lame detection at ds point, which is ok.
; 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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION AUTHORITY
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
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
www.sub.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.55
ENTRY_END
RANGE_END
; e.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.12.94.30
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
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 AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. 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 AA 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 AA NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.44
ENTRY_END
; response to DNSKEY priming query
; sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
sub.example.com. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
sub.example.com. 3600 IN RRSIG DNSKEY 5 3 3600 20070926134150 20070829134150 30899 sub.example.com. uNGp99iznjD7oOX02XnQbDnbg75UwBHRvZSKYUorTKvPUnCWMHKdRsQ+mf+Fx3GZ+Fz9BVjoCmQqpnfgXLEYqw== ;{id = 30899}
SECTION AUTHORITY
; no NS set. not needed for this test.
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ns.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. UF7shD/gt1FOp2UHgLTNbPzVykklSXFMEtJ1xD+Hholwf/PIzd7zoaIttIYibNa4fUXCqMg22H9P7MRhfmFe6g== ;{id = 30899}
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
www.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. 0DqqRfRtm7VSEQ4mmBbzrKRqQAay3JAE8DPDGmjtokrrjN9F1G/HxozDV7bjdIh2EChlQea8FPwf/GepJMUVxg== ;{id = 30899}
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.55
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION ANSWER
ns.example.com. IN A 1.2.3.55
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
ENTRY_END
; fine DNSKEY response.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
example.com. 3600 IN RRSIG DNSKEY DSA 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFBQRtlR4BEv9ohi+PGFjp+AHsJuHAhRCvz0shggvnvI88DFnBDCczHUcVA== ;{id = 2854}
SECTION AUTHORITY
example.com. IN NS ns.example.com.
example.com. 3600 IN RRSIG NS 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFQCN+qHdJxoI/2tNKwsb08pra/G7aAIUAWA5sDdJTbrXA1/3OaesGBAO3sI= ;{id = 2854}
ENTRY_END
; correct delegation with DS
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
SECTION AUTHORITY
sub.example.com. IN NS ns.sub.example.com.
sub.example.com. IN NS ns.example.net.
sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
sub.example.com. 3600 IN RRSIG DS 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCW3ix0GD4BSvNLWIbROCJt5DAW9AhRt/kg9kBKJ20UBUdumrBUHqnskdA== ;{id = 2854}
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ENTRY_END
; response for delegation to sub.example.com.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
SECTION AUTHORITY
sub.example.com. IN NS ns.sub.example.com.
sub.example.com. IN NS ns.example.net.
sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
sub.example.com. 3600 IN RRSIG DS 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCW3ix0GD4BSvNLWIbROCJt5DAW9AhRt/kg9kBKJ20UBUdumrBUHqnskdA== ;{id = 2854}
SECTION ADDITIONAL
ns.sub.example.com. IN A 1.2.3.6
ENTRY_END
RANGE_END
; server is not DNSSEC lame.
; ns.sub.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.6
; response to DNSKEY priming query
; sub.example.com. 3600 IN DS 30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
sub.example.com. IN DNSKEY
SECTION ANSWER
sub.example.com. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
sub.example.com. 3600 IN RRSIG DNSKEY 5 3 3600 20070926134150 20070829134150 30899 sub.example.com. uNGp99iznjD7oOX02XnQbDnbg75UwBHRvZSKYUorTKvPUnCWMHKdRsQ+mf+Fx3GZ+Fz9BVjoCmQqpnfgXLEYqw== ;{id = 30899}
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
www.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. 0DqqRfRtm7VSEQ4mmBbzrKRqQAay3JAE8DPDGmjtokrrjN9F1G/HxozDV7bjdIh2EChlQea8FPwf/GepJMUVxg== ;{id = 30899}
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD DO
SECTION QUESTION
www.sub.example.com. IN A
ENTRY_END
; recursion happens here.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA AD DO NOERROR
SECTION QUESTION
www.sub.example.com. IN A
SECTION ANSWER
www.sub.example.com. IN A 11.11.11.11
www.sub.example.com. 3600 IN RRSIG A 5 4 3600 20070926134150 20070829134150 30899 sub.example.com. 0DqqRfRtm7VSEQ4mmBbzrKRqQAay3JAE8DPDGmjtokrrjN9F1G/HxozDV7bjdIh2EChlQea8FPwf/GepJMUVxg== ;{id = 30899}
ENTRY_END
SCENARIO_END

229
testdata/iter_dnsseclame_ta.rpl vendored Normal file
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@ -0,0 +1,229 @@
; config options
server:
trust-anchor: "example.com. 3600 IN DS 2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
val-override-date: "20070916134226"
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test dnssec-lame detection at anchor point.
; 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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION AUTHORITY
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
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
www.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
example.com. IN NS ns.example.net.
SECTION ADDITIONAL
; this entry; glue will make unbound take this reference first.
; it is however, the lame server.
ns.example.com. IN A 1.2.3.55
ENTRY_END
RANGE_END
; e.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.12.94.30
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
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 AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. 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 AA 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 AA NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.44
ENTRY_END
; response to DNSKEY priming query
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
example.com. 3600 IN RRSIG DNSKEY 3 2 3600 20070926134802 20070829134802 2854 example.com. MCwCFG1yhRNtTEa3Eno2zhVVuy2EJX3wAhQeLyUp6+UXcpC5qGNu9tkrTEgPUg== ;{id = 2854}
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
www.example.com. 3600 IN RRSIG A 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFC99iE9K5y2WNgI0gFvBWaTi9wm6AhUAoUqOpDtG5Zct+Qr9F3mSdnbc6V4= ;{id = 2854}
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.55
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION ANSWER
ns.example.com. IN A 1.2.3.55
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
ENTRY_END
; lame DNSKEY response.
; here without sigs (assuming server does unknown-RR type handling)
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
ENTRY_END
; the lame response. No RRSIGS.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
; the wrong answer.
www.example.com. IN A 10.20.30.40
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD DO
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; recursion happens here.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA AD DO NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
www.example.com. 3600 IN RRSIG A 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFC99iE9K5y2WNgI0gFvBWaTi9wm6AhUAoUqOpDtG5Zct+Qr9F3mSdnbc6V4= ;{id = 2854}
ENTRY_END
SCENARIO_END

227
testdata/iter_dnsseclame_ta_ok.rpl vendored Normal file
View file

@ -0,0 +1,227 @@
; config options
server:
trust-anchor: "example.com. 3600 IN DS 2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
val-override-date: "20070916134226"
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test dnssec-lame detection with anchor point that is ok.
; 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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION AUTHORITY
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
net. IN NS e.gtld-servers.net.
SECTION ADDITIONAL
e.gtld-servers.net. IN A 192.12.94.30
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
www.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
example.com. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.55
ENTRY_END
RANGE_END
; e.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.12.94.30
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
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 AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. 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 AA 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 AA NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.44
ENTRY_END
; response to DNSKEY priming query
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
example.com. 3600 IN RRSIG DNSKEY 3 2 3600 20070926134802 20070829134802 2854 example.com. MCwCFG1yhRNtTEa3Eno2zhVVuy2EJX3wAhQeLyUp6+UXcpC5qGNu9tkrTEgPUg== ;{id = 2854}
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
www.example.com. 3600 IN RRSIG A 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFC99iE9K5y2WNgI0gFvBWaTi9wm6AhUAoUqOpDtG5Zct+Qr9F3mSdnbc6V4= ;{id = 2854}
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.55
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION ANSWER
ns.example.com. IN A 1.2.3.55
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
ENTRY_END
; the response is not lame at all.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN DNSKEY
SECTION ANSWER
example.com. 3600 IN DNSKEY 256 3 3 ALXLUsWqUrY3JYER3T4TBJII s70j+sDS/UT2QRp61SE7S3E EXopNXoFE73JLRmvpi/UrOO/Vz4Se 6wXv/CYCKjGw06U4WRgR YXcpEhJROyNapmdIKSx hOzfLVE1gqA0PweZR8d tY3aNQSRn3sPpwJr6Mi /PqQKAMMrZ9ckJpf1+b QMOOvxgzz2U1GS18b3y ZKcgTMEaJzd/GZYzi/B N2DzQ0MsrSwYXfsNLFO Bbs8PJMW4LYIxeeOe6rUgkWOF 7CC9Dh/dduQ1QrsJhmZAEFfd6ByYV+ ;{id = 2854 (zsk), size = 1688b}
example.com. 3600 IN RRSIG DNSKEY 3 2 3600 20070926134802 20070829134802 2854 example.com. MCwCFG1yhRNtTEa3Eno2zhVVuy2EJX3wAhQeLyUp6+UXcpC5qGNu9tkrTEgPUg== ;{id = 2854}
ENTRY_END
; response is not lame.
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
www.example.com. 3600 IN RRSIG A 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFC99iE9K5y2WNgI0gFvBWaTi9wm6AhUAoUqOpDtG5Zct+Qr9F3mSdnbc6V4= ;{id = 2854}
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD DO
SECTION QUESTION
www.example.com. IN A
ENTRY_END
; recursion happens here.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA AD DO NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.40
www.example.com. 3600 IN RRSIG A 3 3 3600 20070926134150 20070829134150 2854 example.com. MC0CFC99iE9K5y2WNgI0gFvBWaTi9wm6AhUAoUqOpDtG5Zct+Qr9F3mSdnbc6V4= ;{id = 2854}
ENTRY_END
SCENARIO_END

5
util/module.h
View file

@ -194,6 +194,11 @@ struct module_env {
/** is validation required for messages, controls client-facing
* validation status (AD bits) and servfails */
int need_to_validate;
/** trusted key storage; these are the configured keys, if not NULL,
* otherwise configured by validator. These are the trust anchors,
* and are not primed and ready for validation, but on the bright
* side, they are read only memory, thus no locks and fast. */
struct val_anchors* anchors;
/** module specific data. indexed by module id. */
void* modinfo[MAX_MODULE];
};

11
validator/val_anchor.c
View file

@ -121,16 +121,7 @@ init_parents(struct val_anchors* anchors)
}
}
/**
* Find a trust anchor. Exact matching.
* @param anchors: anchor storage.
* @param name: name of trust anchor (wireformat)
* @param namelabs: labels in name
* @param namelen: length of name
* @param dclass: class of trust anchor
* @return NULL if not found.
*/
static struct trust_anchor*
struct trust_anchor*
anchor_find(struct val_anchors* anchors, uint8_t* name, int namelabs,
size_t namelen, uint16_t dclass)
{

12
validator/val_anchor.h
View file

@ -141,6 +141,18 @@ int anchors_apply_cfg(struct val_anchors* anchors, struct config_file* cfg);
struct trust_anchor* anchors_lookup(struct val_anchors* anchors,
uint8_t* qname, size_t qname_len, uint16_t qclass);
/**
* Find a trust anchor. Exact matching.
* @param anchors: anchor storage.
* @param name: name of trust anchor (wireformat)
* @param namelabs: labels in name
* @param namelen: length of name
* @param dclass: class of trust anchor
* @return NULL if not found.
*/
struct trust_anchor* anchor_find(struct val_anchors* anchors,
uint8_t* name, int namelabs, size_t namelen, uint16_t dclass);
/**
* Store one string as trust anchor RR.
* @param anchors: anchor storage.

23
validator/validator.c
View file

@ -97,15 +97,16 @@ fill_nsec3_iter(struct val_env* ve, char* s, int c)
/** apply config settings to validator */
static int
val_apply_cfg(struct val_env* val_env, struct config_file* cfg)
val_apply_cfg(struct module_env* env, struct val_env* val_env,
struct config_file* cfg)
{
int c;
val_env->bogus_ttl = (uint32_t)cfg->bogus_ttl;
val_env->clean_additional = cfg->val_clean_additional;
val_env->permissive_mode = cfg->val_permissive_mode;
if(!val_env->anchors)
val_env->anchors = anchors_create();
if(!val_env->anchors) {
if(!env->anchors)
env->anchors = anchors_create();
if(!env->anchors) {
log_err("out of memory");
return 0;
}
@ -115,7 +116,7 @@ val_apply_cfg(struct val_env* val_env, struct config_file* cfg)
log_err("out of memory");
return 0;
}
if(!anchors_apply_cfg(val_env->anchors, cfg)) {
if(!anchors_apply_cfg(env->anchors, cfg)) {
log_err("validator: error in trustanchors config");
return 0;
}
@ -146,7 +147,7 @@ val_init(struct module_env* env, int id)
env->modinfo[id] = (void*)val_env;
env->need_to_validate = 1;
val_env->permissive_mode = 0;
if(!val_apply_cfg(val_env, env->cfg)) {
if(!val_apply_cfg(env, val_env, env->cfg)) {
log_err("validator: could not apply configuration settings.");
return 0;
}
@ -160,7 +161,7 @@ val_deinit(struct module_env* env, int id)
if(!env || !env->modinfo || !env->modinfo[id])
return;
val_env = (struct val_env*)env->modinfo[id];
anchors_delete(val_env->anchors);
anchors_delete(env->anchors);
key_cache_delete(val_env->kcache);
free(val_env->nsec3_keysize);
free(val_env->nsec3_maxiter);
@ -1114,13 +1115,13 @@ processInit(struct module_qstate* qstate, struct val_qstate* vq,
}
}
val_mark_indeterminate(vq->chase_reply, ve->anchors,
val_mark_indeterminate(vq->chase_reply, qstate->env->anchors,
qstate->env->rrset_cache);
vq->key_entry = NULL;
vq->empty_DS_name = NULL;
vq->ds_rrset = 0;
vq->trust_anchor = anchors_lookup(ve->anchors, vq->qchase.qname,
vq->qchase.qname_len, vq->qchase.qclass);
vq->trust_anchor = anchors_lookup(qstate->env->anchors,
vq->qchase.qname, vq->qchase.qname_len, vq->qchase.qclass);
if(vq->trust_anchor == NULL) {
/*response isn't under a trust anchor, so we cannot validate.*/
vq->chase_reply->security = sec_status_indeterminate;
@ -2078,7 +2079,7 @@ val_get_mem(struct module_env* env, int id)
if(!ve)
return 0;
return sizeof(*ve) + key_cache_get_mem(ve->kcache) +
anchors_get_mem(ve->anchors) +
anchors_get_mem(env->anchors) +
sizeof(size_t)*2*ve->nsec3_keyiter_count;
}

3
validator/validator.h
View file

@ -59,9 +59,6 @@ struct key_entry_key;
* Global state for the validator.
*/
struct val_env {
/** trusted key storage; these are the configured keys */
struct val_anchors* anchors;
/** key cache; these are validated keys. trusted keys only
* end up here after being primed. */
struct key_cache* kcache;