00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
122 lines
3.8 KiB
Perl
122 lines
3.8 KiB
Perl
#!@PERL@
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#
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# Copyright (C) 2010, 2012, 2014 Internet Systems Consortium, Inc. ("ISC")
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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# Id: check-secure-delegation.pl.in,v 1.2 2010/12/21 02:32:21 marka Exp
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use warnings;
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use FileHandle;
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use IPC::Open2;
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use POSIX qw/strftime/;
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#
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# We only compare keyid / DNSSEC algorithm pairs. If this succeeds then
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# the crypto will likely succeed. If it fails then the crypto will definitely
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# fail.
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#
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$prefix = "@prefix@";
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$dig = "$prefix/bin/dig +cd +dnssec +noall +answer";
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$dsfromkey = "$prefix/sbin/dnssec-dsfromkey -1 -A -f /dev/stdin";
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# Get "now" in a RRSIG datestamp format.
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$now = strftime "%Y%m%d%H%M%S", gmtime;
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foreach $zone (@ARGV) {
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my %algorithms = ();
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my %dnskeygood = ();
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my %dnskeyalg = ();
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my %dnskey = ();
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my %dsgood = ();
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my %ds = ();
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# Read the DS records and extract the key id, algorithm pairs
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open(DS, "$dig -t DS -q $zone|") || die("dig DS failed");
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while(<DS>) {
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@words = split;
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if ($words[3] eq "RRSIG" && $words[4] eq "DS") {
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next if ($words[8] >= $now && $words[9] <= $now);
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print "BAD SIG DATES: $_";
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}
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next if ($words[3] ne "DS");
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$ds{"$words[4] $words[5]"} = 1;
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$algorithms{"$words[5]"} = 1;
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}
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close(DS);
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# Read the RRSIG(DNSKEY) records and extract the key id,
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# algorithm pairs. Set good if we have a match against the DS
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# records. DNSKEY records should be before the RRSIG records.
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open(DNSKEY, "$dig -t DNSKEY -q $zone|") || die("dig DNSKEY failed");
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while (<DNSKEY>) {
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@words = split;
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if ($words[3] eq "DNSKEY") {
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$dnskeyalg{"$words[6]"} = 1;
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next if (! -e "/dev/stdin");
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# get the key id ($dswords[3]).
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$pid = open2(*Reader, *Writer, "$dsfromkey $zone");
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die("dsfromkey failed") if ($pid == -1);
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print Writer "$_";
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close(Writer);
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$line = <Reader>;
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close(Reader);
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@dswords = split /\s/, $line;
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$dnskey{"$dswords[3] $dswords[4]"} = 1;
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next;
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}
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next if ($words[3] ne "RRSIG" || $words[4] ne "DNSKEY");
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if ($words[8] >= $now && $words[9] <= $now) {
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# If we don't have /dev/stdin then just check for the
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# RRSIG otherwise check for both the DNSKEY and
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# RRSIG.
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$dsgood{"$words[5]"} = 1
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if (! -e "/dev/stdin" &&
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exists($ds{"$words[10] $words[5]"}));
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$dsgood{"$words[5]"} = 1
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if (exists($ds{"$words[10] $words[5]"}) &&
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exists($dnskey{"$words[10] $words[5]"}));
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$dnskeygood{"$words[5]"} = 1
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if (! -e "/dev/stdin");
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$dnskeygood{"$words[5]"} = 1
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if (exists($dnskey{"$words[10] $words[5]"}));
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} else {
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$dnskeygood{"$words[5]"} = 1;
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print "BAD SIG DATES: $_";
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}
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}
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close(DNSKEY);
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# Do we have signatures for all DNSKEY algorithms?
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foreach $alg ( keys %dnskeyalg ) {
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print "Missing $zone DNSKEY RRSIG for algorithm $alg\n"
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if (!exists($dnskeygood{$alg}));
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}
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# Do we have a matching self signed DNSKEY for all DNSSEC algorithms
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# in the DS records.
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$count = 0;
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foreach $alg ( keys %algorithms ) {
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if (exists($dsgood{$alg})) {
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print "$zone algorithm $alg good " .
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"(found DS / self signed DNSKEY pair)\n";
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} else {
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print "$zone algorithm $alg bad " .
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"(no DS / self signed DNSKEY pair found)\n";
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}
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$count++;
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}
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print "$zone has no secure delegation records\n"
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if (! $count);
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}
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