trust anchor denial test.

git-svn-id: file:///svn/unbound/trunk@594 be551aaa-1e26-0410-a405-d3ace91eadb9

diff --git a/doc/Changelog b/doc/Changelog
index 8667a0c592724384d3dff9be81df035f60d3c628..78fdba21ab3866d754adfecf0cdca9b9d0aae48f 100644 (file)
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -4,6 +4,9 @@
        - ANY type answers get RRSIG in answer section of replies (but not
          in other sections, unless DO bit is on).
        - testbound can replay a TCP query (set MATCH TCP in the QUERY).
+       - DS and noDS referral validation test.
+       - if you configure many trust anchors, parent trust anchors can
+         securely deny existance of child trust anchors, if validated.
 
 4 September 2007: Wouter
        - fixup of Leakage warning when serviced queries processed multiple

diff --git a/doc/TODO b/doc/TODO
index 6b3a96f22e8eda4ad27649ea7a9c607fb48f45d3..33cb1580f508130dad8e95d36ae50296cdcbc60c 100644 (file)
--- a/doc/TODO
+++ b/doc/TODO
@@ -44,3 +44,4 @@ o improve compression of DNS packets by first puttig uncompressible rrs, then
 o if one server is not responsive do not spend 75 secs on that server, but
   try other servers with lower rtt.
 o NSID rfc 5001 support.
+o Treat YXDOMAIN from a DNAME properly, in iterator (not throwaway), validator.

diff --git a/testdata/val_anchor_nx.rpl b/testdata/val_anchor_nx.rpl
new file mode 100644 (file)
index 0000000..b4bec84
--- /dev/null
+++ b/testdata/val_anchor_nx.rpl
@@ -0,0 +1,186 @@
+; config options
+; The island of trust is at example.com
+server:
+       trust-anchor: "example.com.    3600    IN      DS      2854 3 1 46e4ffc6e9a4793b488954bd3f0cc6af0dfb201b"
+       trust-anchor: "sub.example.com.    3600    IN      DS      30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3"
+       val-override-date: "20070916134226"
+
+stub-zone:
+       name: "."
+       stub-addr: 193.0.14.129         # K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test validator with secure proof of trust anchor 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.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
+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       1.2.3.4
+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 for sub.example.com.
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN A
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN DS
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+sub.example.com. IN DNSKEY
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+RANGE_END
+
+; 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 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
+sub.example.com. IN    NS ns.sub.example.com.
+sub.example.com.        3600    IN      RRSIG   NS 5 3 3600 20070926134150 20070829134150 30899 sub.example.com. wcpHeBILHfo8C9uxMhcW03gcURZeUffiKdSTb50ZjzTHgMNhRyMfpcvSpXEd9548A9UTmWKeLZChfr5Z/glONw== ;{id = 30899}
+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 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
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.sub.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA AD NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN A
+SECTION ANSWER
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+SECTION ADDITIONAL
+ENTRY_END
+
+SCENARIO_END

diff --git a/testdata/val_anchor_nx_nosig.rpl b/testdata/val_anchor_nx_nosig.rpl
new file mode 100644 (file)
index 0000000..668e47c
--- /dev/null
+++ b/testdata/val_anchor_nx_nosig.rpl
@@ -0,0 +1,185 @@
+; config options
+; The island of trust is at example.com
+server:
+       trust-anchor: "sub.example.com.    3600    IN      DS      30899 RSASHA1 1 f7ed618f24d5e5202927e1d27bc2e84a141cb4b3"
+       val-override-date: "20070916134226"
+
+stub-zone:
+       name: "."
+       stub-addr: 193.0.14.129         # K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test validator with unsigned denial of trust anchor
+
+; 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
+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       1.2.3.4
+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 for sub.example.com.
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN A
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN DS
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NXDOMAIN
+SECTION QUESTION
+sub.example.com. IN DNSKEY
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+example.com.    3600    IN      RRSIG   SOA 3 2 3600 20070926134150 20070829134150 2854 example.com. MCwCFC5uwIHSehZtetK2CMNXttSFUB0XAhROFDAgy/FaxR8zFXJzyPdpQG93Sw== ;{id = 2854}
+blub.example.com. NSEC znub.example.com. A MX RRSIG NSEC
+blub.example.com.       3600    IN      RRSIG   NSEC 3 3 3600 20070926134150 20070829134150 2854 example.com. MCwCFCic/WwyMtdDE/84g8l0S0M8AOtnAhR88hQEp5cD5XQ3EmQ79RUuNTCgdg== ;{id = 2854}
+example.com. NSEC blub.example.com. SOA NS MX DNSKEY RRSIG NSEC
+example.com.    3600    IN      RRSIG   NSEC 3 2 3600 20070926134150 20070829134150 2854 example.com. MC0CFFYX7iNIlT79gNFFlvnn44Ittm6HAhUAg7u0hZ4to87qyfkonZu2jVLW3xw= ;{id = 2854}
+ENTRY_END
+RANGE_END
+
+; 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 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
+sub.example.com. IN    NS ns.sub.example.com.
+sub.example.com.        3600    IN      RRSIG   NS 5 3 3600 20070926134150 20070829134150 30899 sub.example.com. wcpHeBILHfo8C9uxMhcW03gcURZeUffiKdSTb50ZjzTHgMNhRyMfpcvSpXEd9548A9UTmWKeLZChfr5Z/glONw== ;{id = 30899}
+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 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
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.sub.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NXDOMAIN
+SECTION QUESTION
+www.sub.example.com. IN A
+SECTION ANSWER
+SECTION AUTHORITY
+example.com. SOA ns.example.com. h.example.com. 2007090504 1800 1800 2419200 7200
+SECTION ADDITIONAL
+ENTRY_END
+
+SCENARIO_END

diff --git a/validator/validator.c b/validator/validator.c
index 556caf08f86bdc323204195d15651d511e24dee4..4090bb1ab62a8dfdb38ac97e6fef5afcd388720d 100644 (file)
--- a/validator/validator.c
+++ b/validator/validator.c
@@ -934,6 +934,23 @@ processInit(struct module_qstate* qstate, struct val_qstate* vq,
                log_nametypeclass(VERB_ALGO, "signer is", lookup_name, 0, 0);
        }
 
+       /* for NXDOMAIN it could be signed by a parent of the trust anchor */
+       if(subtype == VAL_CLASS_NAMEERROR && vq->signer_name &&
+               dname_strict_subdomain_c(vq->trust_anchor->name, lookup_name)){
+               while(vq->trust_anchor && dname_strict_subdomain_c(
+                       vq->trust_anchor->name, lookup_name)) {
+                       vq->trust_anchor = vq->trust_anchor->parent;
+               }
+               if(!vq->trust_anchor) { /* unsigned parent denies anchor*/
+                       verbose(VERB_DETAIL, "unsigned parent zone denies"
+                               " trust anchor, indeterminate");
+                       vq->chase_reply->security = sec_status_indeterminate;
+                       vq->state = VAL_FINISHED_STATE;
+                       return 1;
+               }
+               verbose(VERB_ALGO, "trust anchor NXDOMAIN by signed parent");
+       }
+
        if(vq->rrset_skip > 0 || subtype == VAL_CLASS_CNAME ||
                subtype == VAL_CLASS_REFERRAL) {
                /* extract this part of orig_msg into chase_reply for