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DNS: Add Ed25519 and Ed448 enum values to parser

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We already had these declared in dns/const.zeek, so extend the parser
as well to avoid raising weirds and add some test pcaps:

   $ dig @8.8.8.8 DNSKEY ed448.no
   $ dig @8.8.8.8 ed448.no +dnssec

And the same for the ed25519.no domain.

Closes #3453
This commit is contained in:
Arne Welzel 2023-11-17 19:44:00 +01:00
parent b0a200a5dc
commit 81aa6b14fd
7 changed files with 38 additions and 0 deletions
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24
testing/btest/scripts/base/protocols/dns/dnssec.zeek Normal file
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@ -0,0 +1,24 @@
# @TEST-DOC: Add the textual representation of the DNSSEC algorithm into answers and verify there's no weirds for the ed25519 and ed448 curves.
#
# @TEST-EXEC: zeek -b -r $TRACES/dnssec/ed25519.no.pcap %INPUT
# @TEST-EXEC: test ! -f weird.log
# @TEST-EXEC: zeek-cut -m id.orig_h id.resp_h qtype_name query answers < dns.log > dns.ed25519.log
#
# @TEST-EXEC: zeek -b -C -r $TRACES/dnssec/ed448.no.pcap %INPUT
# @TEST-EXEC: test ! -f weird.log
# @TEST-EXEC: zeek-cut -m id.orig_h id.resp_h questions answers < dns.log > dns.ed448.log
#
# @TEST-EXEC: btest-diff dns.ed25519.log
# @TEST-EXEC: btest-diff dns.ed448.log
@load base/protocols/dns
event dns_RRSIG(c: connection, msg: dns_msg, ans: dns_answer, rrsig: dns_rrsig_rr) &priority=4
{
c$dns$answers += DNS::algorithms[rrsig$algorithm];
}
event dns_DNSKEY(c: connection, msg: dns_msg, ans: dns_answer, dnskey: dns_dnskey_rr) &priority=4
{
c$dns$answers += DNS::algorithms[dnskey$algorithm];
}