#!/usr/bin/perl -w
+use strict;
use IO::File;
use Data::Dumper;
+use vars qw($etcfile $where);
$etcfile= "/etc/bind/chiark-conf-gen.zones";
$where= '<built-in>';
+use vars qw($mode $verbosity $debug);
$mode= '';
$verbosity= 1;
-$fromroot= 0;
+$debug= 0;
while (@ARGV && $ARGV[0] =~ m/^\-/) {
$_= shift @ARGV;
last if m/^$/;
if (m/^quiet$/) { $verbosity=0; }
elsif (m/^verbose$/) { $verbosity=2; }
- elsif (m/^root$/) { $fromroot=1; }
elsif (m/^(yes|no|force)$/) { m/^./; $mode= $&; }
elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
else { usageerr("unknown option --$_"); }
last if m/^$/;
while (m/^./) {
if (s/^[ynf]//) { $mode=$&; }
- elsif (s/^r//) { $fromroot=1; }
elsif (s/^v//) { $verbosity=2; }
elsif (s/^q//) { $verbosity=0; }
+ elsif (s/^D//) { $debug=1; }
elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
else { usageerr("unknown option -$&"); }
}
" -y --yes check and install\n".
" -n --no check only\n".
"additional options:\n".
-" -r --root check all the way back to the root\n".
" -q --quiet no output for OK zones\n".
" -v --verbose extra verbose\n";
}
cfg_fail("config filename $etcfile should have been absolute path of a file")
unless $etcfile =~ m,^/, && $etcfile !~ m,/$,;
+use vars qw($default_dir);
$default_dir= $etcfile;
$default_dir =~ s,/[^/]+$,,;
+use vars qw($slave_dir $slave_prefix $slave_suffix);
$slave_dir= 'slave';
$slave_prefix= '';
$slave_suffix= '';
+
+use vars qw(@self_ns @self_soa);
@self_ns= @self_soa= ();
+
+use vars qw(%zone_cfg @zone_cfg_list);
%zone_cfg= ();
@zone_cfg_list= ();
+
+use vars qw($output $default_output %output_contents);
$output= '';
$default_output= '';
%output_contents= ();
+use vars qw($check $install);
+$check= $mode !~ m/^n/;
+$install= $mode =~ m/^[yf]/;
+
read_config($etcfile);
+debug_dump('@zone_cfg_list %zone_cfg');
+process_zones($mode ? @zone_cfg_list : @ARGV);
+debug_dump('%output_contents');
+
+use vars qw($zone $cfg $warnings);
+$warnings= 0;
+
+sub progress ($) {
+ return if !$verbosity;
+ print "$_[0]\n";
+}
+
+sub process_zones (@) {
+ my (@zones) = @_;
+ local ($zone,$cfg);
+
+ foreach $zone (@zones) {
+ $cfg= $zone_cfg{$zone} || { 'style' => 'foreign' };
+ progress(sprintf "%-40s %s", $zone, $$cfg{'style'});
+ if ($check) {
+ eval { zone_check() };
+ zone_warning("checks failed: $@") if length $@;
+ }
+ zone_output() if $install;
+ }
+}
+
+sub zone_warning ($) {
+ my ($w) = @_;
+ $w =~ s/\n$//;
+ $w =~ s,\n, // ,g;
+ print STDERR "$zone: warning: $w\n" or die $!;
+ $warnings++;
+}
+
+sub zone_warnmore ($) {
+ print STDERR " $_[0]\n" or die $!;
+}
-print Dumper(@zone_cfg_list), Dumper(%zone_cfg);
+use vars qw(%delgs # $delgs{$nameserver_list} = [ $whosaidandwhy ]
+ %auths # $auths{$nameserver_list} = [ $whosaidandwhy ]
+ %glue # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
+ %soas # $soa{"$origin $serial"} = [ $whosaidandwhy ]
+ @to_check # ($addr,$whyask,\%delgs_or_auths,$glueless_ok, ...)
+ @to_check_soa # ($addr,$whyask, ...)
+ );
+
+sub zone_check () {
+ my ($super_zone, @super_nsnames,
+ $super_ns, @super_ns_addrs, $super_ns_addr, $s, $wa, $zcr,
+ %nsrrset_checked, %soa_checked);
+
+ %delgs= %auths= %glue= ();
+ @to_check= @to_check_soa= ();
+
+ $super_zone= $zone;
+ for (;;) {
+ debug_trace("zone $zone superzone $super_zone");
+ $super_zone =~ s/^[^.]+\.// or die "no superzone ? ($super_zone)\n";
+ ($rcode,@super_nsnames)= lookup($super_zone,'ns-','06');
+ last if !$rcode;
+ }
+ for $super_ns (@super_nsnames) {
+ $super_ns= lc $super_ns;
+ ($rcode,@this_ns_addrs)= lookup($super_ns,'a','0');
+ foreach $super_ns_addr (@this_ns_addrs) {
+ push @to_check,
+ $super_ns_addr,
+ "addr for $super_ns, server for $super_zone, parent"
+ \%delgs, 0;
+ }
+ }
+ for (;;) {
+ # We do these in order so that we always do NS RRset checks on
+ # nameservers that came from other NS RRsets first; otherwise
+ # we might set nsrrset_checked due to a glueless_ok check,
+ # and then not check for gluefulness later.
+ if (($addr,$wa,$nsrrset_ref,$glueless_ok,@to_check) = @to_check) {
+ next if $nsrrset_checked{$ns}++;
+ push @to_check_soa, $addr, $why;
+ zone_check_nsrrset($super_ns_addr,"$addr, $wa",
+ %$delgs_or_auths,$glueless_ok);
+ } elsif (($addr,$wa) = @to_check_soa) {
+ next if !$soa_checked{$ns}++;
+ zone_check_soa($addr,"$addr, $wa");
+ }
+ }
+ zone_consistency();
+}
+
+sub zone_consistency() {
+ my ($d);
+ zone_consistency_set('delegations',%delgs);
+ foreach $d (keys %delgs) { delete $auths{$d}; }
+ zone_consistency_set('zone nameserver rrset',%auths);
+ foreach $h (keys %glue) {
+ zone_consistency_set("glue for $h", %{ $glue{$h} });
+ }
+}
+
+sub zone_consistency_set ($\%) {
+ my ($msg,$set) = @_;
+ my ($d,$o);
+ if (keys(%$set) != 1) {
+ zone_warning("inconsistent $msg:");
+ foreach $d (keys %$set) {
+ foreach $o (@$d) { zone_warnmore(" $d from $o"); }
+ }
+ }
+}
+
+sub zone_check_soa ($$) {
+ my ($uaddr,$ww) = @_;
+ my ($lame,$origin,$got,$rcode,@soa_addrs,$soa_addr);
+ $lame= 'dead or lame';
+ dig::dig({
+ if ($dig::type eq 'flags:') {
+ $lame= $dig::rdata =~ m/ aa / ? 'lame' : '';
+ } elsif ($dig::type eq 'soa' && $dig::owner eq $zone && !$lame) {
+ die "several SOAs ? $why" if defined $origin;
+ $dig::rdata =~ m/^(\S+) \S+ (\d+) /
+ or die "soa $dig::rdata ? $why";
+ $origin= $1;
+ $got= "$1 $2";
+ }
+ },
+ $zone,'soa',$uaddr);
+ $lame= 'broken' if !$lame && !defined $origin;
+ if ($lame) { zone_warning("$lame server $ww"); return; }
+ push @{ $soas{$got} }, $why;
+ ($rcode,@soa_addrs)= lookup($origin,'a','0');
+ foreach $soa_addr (@soa_addrs) {
+ push @to_check,
+ $soa_addr,
+ "addr for $origin, SOA ORIGIN from $why";
+ }
+}
+
+sub zone_check_nsrrset ($$\%\%) {
+ my ($uaddr,$ww, $delgs_or_auths,$glueless_ok) = @_;
+ my (@s, $s, %s2g, @glue, $glue);
+ dig::dig({
+ if ($dig::type eq 'ns' && $dig::owner eq $zone) {
+ $s2g{lc $dig::rdata} = [ ];
+ } elsif ($dig::type eq 'a' && exists $s2g{$dig::owner}) {
+ push @to_check,
+ $dig::rdata,
+ "glue for $dig::owner, from (eg) $why",
+ \%auths, 0;
+ push @{ $s2g{$dig::rdata} }, $dig::rdata;
+ }
+ },
+ $zone,'ns',$uaddr);
+ @s= sort keys %s2g;
+ foreach $s (@s) {
+ @glue= @{ $s2g{$s} };
+ if (!length @glue) {
+ zone_warning("glueless NS $s, from $ww") unless $glueless_ok;
+ next;
+ }
+ $glue= join ' ', sort @glue;
+ push @{ $glue{$s}{$glue} }, $why;
+ }
+ $s= join ' ', @s;
+ push @{ $nsrrset_ref->{$s} }, $why;
+}
+
+sub zone_output () {
+ $output_contents{$$cfg{'output'}}.=
+ sprintf(<<'END',
+zone "%s" {
+ type %s;
+ file "%s";
+};
+END
+ $zone,
+ $$cfg{'style'} eq 'primary' ? 'master' : 'slave',
+ $$cfg{'file'});
+}
+
+sub debug_dump ($) {
+ my ($vn);
+ return unless $debug;
+ local $Data::Dumper::Terse=1;
+ foreach $vn (split /\s+/, $_[0]) {
+ print "$vn := ", eval "Dumper(\\$vn)";
+ }
+}
sub cfg_fail ($) { die "$0: $where:\n $_[0]\n"; }
cfg_fail("redefined zone $zone") if exists $zone_cfg{$zone};
$zone_cfg{$zone}{'file'}= $file;
$zone_cfg{$zone}{'style'}= $style;
- $zone_cfg{$zone}{'servers'}= @servers;
+ $zone_cfg{$zone}{'servers'}= [ @servers ];
+ $zone_cfg{$zone}{'self_soa'}= [ @self_soa ];
+ $zone_cfg{$zone}{'self_ns'}= [ @self_ns ];
$zone_cfg{$zone}{'output'}= $output;
push @zone_cfg_list, $zone;
}
$output_contents{$output}= '';
}
-__DATA__
-
-
-
-sub lookup ($$) {
- my ($type,$domain) = @_;
+sub lookup ($$$) {
+ my ($type,$domain,$okrcodes) = @_;
my ($c,@result);
- defined($c=open ADH, "-|") or die "$0: fork adnshost:\n $!\n";
+ defined($c= open ADH, "-|") or die "$0: fork adnshost:\n $!\n";
if (!$c) {
- exec 'adnshost','+Do','+Dt','+Dc','-Cf',"-t$type",
+ exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
'-',"$domain.";
die "$0: exec adnshost:\n $!\n";
}
@result= <ADH>;
chomp @result;
$!=0; close ADH;
- die "$0: lookup -t$type $domain failed $? $!\n" if $? or $!;
- return @result;
+ die "$0: lookup -t$type $domain $okrcodes failed $? $!\n"
+ if $! or $?>6 or index($okrcodes,$?)<0;
+ return ($?,@result);
}
+__DATA__
+
+
+
+
sub lookup1 ($$) {
my ($type,$domain) = @_;
my (@result)= lookup($type,$domain);
for f in $zones
do
zone="`echo $f | sed -e 's/_db$//'`"
- cat <<END
-zone "$zone" {
- type master;
- file "primary/$f";
-};
END
done
endfile
~ian / chiark-utils.git / commitdiff