check-secure-delegation.pl.in revision bf8267aa453e5d2a735ed732a043b77a0b355b20
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# Copyright (C) 2010 Internet Systems Consortium, Inc. ("ISC")
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# Permission to use, copy, modify, and/or distribute this software for any
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# purpose with or without fee is hereby granted, provided that the above
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# copyright notice and this permission notice appear in all copies.
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# PERFORMANCE OF THIS SOFTWARE.
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# $Id: check-secure-delegation.pl.in,v 1.2 2010/12/21 02:32:21 marka Exp $
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# We only compare keyid / DNSSEC algorithm pairs. If this succeeds then
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# the crypto will likely succeed. If it fails then the crypto will definitely
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews$dig = "$prefix/bin/dig +cd +dnssec +noall +answer";
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews$dsfromkey = "$prefix/sbin/dnssec-dsfromkey -1 -A -f /dev/stdin";
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews# Get "now" in a RRSIG datestamp format.
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # Read the DS records and extract the key id, algorithm pairs
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews open(DS, "$dig -t DS -q $zone|") || die("dig DS failed");
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews if ($words[3] eq "RRSIG" && $words[4] eq "DS") {
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews next if ($words[8] >= $now && $words[9] <= $now);
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # Read the RRSIG(DNSKEY) records and extract the key id,
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # algorithm pairs. Set good if we have a match against the DS
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # records. DNSKEY records should be before the RRSIG records.
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews open(DNSKEY, "$dig -t DNSKEY -q $zone|") || die("dig DNSKEY failed");
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews $pid = open2(*Reader, *Writer, "$dsfromkey $zone");
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews next if ($words[3] ne "RRSIG" || $words[4] ne "DNSKEY");
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # If we don't have /dev/stdin then just check for the
5c526acb82c882e41b655c31f5fa4425c87b671cMark Andrews # RRSIG otherwise check for both the DNSKEY and
$count = 0;
$count++;