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CNAME chain marked as NXDOMAIN normalized to unbound preferred format.

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git-svn-id: file:///svn/unbound/trunk@783 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2007-11-28 09:13:56 +00:00
parent 6bb12a5776
commit b6d9b4bfcc
3 changed files with 194 additions and 0 deletions
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3
doc/Changelog
View file

@ -7,6 +7,9 @@
- test for implicit zone creation and multiple RR RRsets local data.
- local-zone nodefault test.
- show testbound testlist on commit.
- iterator normalizer changes CNAME chains ending in NXDOMAIN where
the packet got rcode NXDOMAIN into rcode NOERROR. (since the initial
domain exists).
27 November 2007: Wouter
- per suggestion in rfc2308, replaced default max-ttl value with 1 day.

8
iterator/iter_scrub.c
View file

@ -350,6 +350,10 @@ scrub_normalize(ldns_buffer* pkt, struct msg_parse* msg,
"too long");
return 0;
}
/* internally we have CNAME'd/DNAME'd chains ending
* in nxdomain with NOERROR rcode, change rcode
* to reflect this (if needed) */
FLAGS_SET_RCODE(msg->flags, LDNS_RCODE_NOERROR);
if(nx && nx->type == LDNS_RR_TYPE_CNAME &&
dname_pkt_compare(pkt, sname, nx->dname) == 0) {
/* check next cname */
@ -392,6 +396,10 @@ scrub_normalize(ldns_buffer* pkt, struct msg_parse* msg,
return 0;
prev = rrset;
rrset = rrset->rrset_all_next;
/* internally we have CNAME'd/DNAME'd chains ending
* in nxdomain with NOERROR rcode, change rcode
* to reflect this (if needed) */
FLAGS_SET_RCODE(msg->flags, LDNS_RCODE_NOERROR);
continue;
}

183
testdata/val_cnamenx_rcodenx.rpl vendored Normal file
View file

@ -0,0 +1,183 @@
; config options
; The island of trust is at example.com
server:
trust-anchor: "example.com. 3600 IN DS 2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
trust-anchor: "example.net. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}"
val-override-date: "20070916134226"
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test validator with cname-nxdomain with rcode nxdomain
; 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
www.example.net. IN A
SECTION AUTHORITY
net. 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
www.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
www.example.net. IN A
SECTION AUTHORITY
example.net. IN NS ns.example.net.
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.5
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.4
; response to DNSKEY priming query
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR 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}
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ns.example.com. 3600 IN RRSIG A 3 3 3600 20070926135752 20070829135752 2854 example.com. MC0CFQCMSWxVehgOQLoYclB9PIAbNP229AIUeH0vNNGJhjnZiqgIOKvs1EhzqAo= ;{id = 2854}
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NXDOMAIN
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 3600 IN CNAME www.example.net.
www.example.com. 3600 IN RRSIG CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFGtYzScyRnHV8U/jOIPYwrlI9t3oAhRF0PIf+IthUR7uCWIvskWp5CfReQ== ;{id = 2854}
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
RANGE_END
; ns.example.net.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.5
; response to DNSKEY priming query
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
example.net. IN DNSKEY
SECTION ANSWER
example.net. 3600 IN DNSKEY 256 3 5 AQPQ41chR9DEHt/aIzIFAqanbDlRflJoRs5yz1jFsoRIT7dWf0r+PeDuewdxkszNH6wnU4QL8pfKFRh5PIYVBLK3 ;{id = 30899 (zsk), size = 512b}
example.net. 3600 IN RRSIG DNSKEY RSASHA1 2 3600 20070926134150 20070829134150 30899 example.net. hiFzlQ8VoYgCuvIsfVuxC3mfJDqsTh0yc6abs5xMx5uEcIjb0dndFQx7INOM+imlzveEN73Hqp4OLFpFhsWLlw== ;{id = 30899}
SECTION AUTHORITY
example.net. IN NS ns.example.net.
example.net. 3600 IN RRSIG NS RSASHA1 2 3600 20070926134150 20070829134150 30899 example.net. E8JX0l4B+cSR5bkHQwOJy1pBmlLMTYCJ8EwfNMU/eCv0YhKwo26rHhn52FGisgv+Nwp7/NbhHqQ+kJgoZC94XA== ;{id = 30899}
SECTION ADDITIONAL
ns.example.net. IN A 1.2.3.5
ns.example.net. 3600 IN RRSIG A RSASHA1 3 3600 20070926134150 20070829134150 30899 example.net. x+tQMC9FhzT7Fcy1pM5NrOC7E8nLd7THPI3C6ie4EwL8PrxllqlR3q/DKB0d/m0qCOPcgN6HFOYURV1s4uAcsw== ;{id = 30899}
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NXDOMAIN
SECTION QUESTION
www.example.net. IN A
SECTION ANSWER
SECTION AUTHORITY
example.net. IN NSEC abc.example.net. SOA NS DNSKEY NSEC RRSIG
example.net. 3600 IN RRSIG NSEC 5 2 3600 20070926134150 20070829134150 30899 example.net. SEHthmjHyqGlzaOp3Dx6Jn5Fnvvtknw/IF6YSFY8NZLe+YSh1oRJbdEkQ8G92IT08n1jSN6jvKRsFBOUoFOQAw== ;{id = 30899}
wab.example.net. IN NSEC wzz.example.net. A NSEC RRSIG
wab.example.net. 3600 IN RRSIG NSEC 5 3 3600 20070926134150 20070829134150 30899 example.net. gl8vkI3xfSWx4Pyv5OdOthiewE6u/13kclY7UG9ptuFBddamdJO3RQqyxM6Xcmq+ToO4kMCCyaKijp01gTDoGg== ;{id = 30899}
SECTION ADDITIONAL
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 10 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA AD NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN CNAME www.example.net.
www.example.com. 3600 IN RRSIG CNAME 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFGtYzScyRnHV8U/jOIPYwrlI9t3oAhRF0PIf+IthUR7uCWIvskWp5CfReQ== ;{id = 2854}
SECTION AUTHORITY
example.net. IN NSEC abc.example.net. SOA NS DNSKEY NSEC RRSIG
example.net. 3600 IN RRSIG NSEC 5 2 3600 20070926134150 20070829134150 30899 example.net. SEHthmjHyqGlzaOp3Dx6Jn5Fnvvtknw/IF6YSFY8NZLe+YSh1oRJbdEkQ8G92IT08n1jSN6jvKRsFBOUoFOQAw== ;{id = 30899}
wab.example.net. IN NSEC wzz.example.net. A NSEC RRSIG
wab.example.net. 3600 IN RRSIG NSEC 5 3 3600 20070926134150 20070829134150 30899 example.net. gl8vkI3xfSWx4Pyv5OdOthiewE6u/13kclY7UG9ptuFBddamdJO3RQqyxM6Xcmq+ToO4kMCCyaKijp01gTDoGg== ;{id = 30899}
SECTION ADDITIONAL
ENTRY_END
SCENARIO_END