11 $debug $needglue $localonly $repeat $verbosity);
13 $quis= $0; $quis =~ s,.*/,,;
17 $etcfile= "/etc/bind/chiark-conf-gen.zones";
25 use vars qw($dig_owner $dig_type $dig_rdata);
27 while (@ARGV && $ARGV[0] =~ m/^\-/) {
31 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; }
32 elsif (m/^all$/) { $doall=1; }
33 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
34 elsif (m/^glueless$/) { $needglue=0; }
35 elsif (m/^localonly$/) { $localonly=1; }
36 elsif (m/^quiet$/) { $verbosity=0; }
37 elsif (m/^repeat$/) { $repeat=1; }
38 elsif (m/^verbose$/) { $verbosity=2; }
39 else { usageerr("unknown option --$_"); }
44 if (s/^[ynf]//) { $mode=$&; }
45 elsif (s/^A//) { $doall=1; }
46 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
47 elsif (s/^D//) { $debug++; }
48 elsif (s/^g//) { $needglue=0; }
49 elsif (s/^l//) { $localonly=1; }
50 elsif (s/^q//) { $verbosity=0; }
51 elsif (s/^r//) { $repeat=1; }
52 elsif (s/^v//) { $verbosity=2; }
53 else { usageerr("unknown option -$&"); }
58 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
59 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
61 usageerr("-D may be specified at most twice") if $debug>2;
62 usageerr("must specify either -f|-y|-n or zones (and not both)")
63 if !!$mode == !!@ARGV;
68 usage: named-conf-regen [options] -f|-y|-n|<zone>...\n".
70 " -f --force install without checking\n".
71 " -y --yes check and install\n".
72 " -n --no check only\n".
73 "additional options:\n".
74 " -A --all report on zones marked ? (ones we know are broken)\n".
75 " -D debug $quis (does not help debug your DNS config)\n".
76 " -g --glueless do not warn about any glueless referrals (not recommended)\n".
77 " -l --localonly full checks only on zones which we primary\n".
78 " -q --quiet no output for OK zones\n".
79 " -r --repeat repeat warnings for all sources of imperfect data\n".
80 " -v --verbose extra verbose info about each zone\n".
81 " -C|--config <DIR/FILE use FILE as default config and DIR as default dir\n";
84 cfg_fail("config filename $etcfile should not be directory")
87 use vars qw($default_dir);
88 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
90 use vars qw($slave_dir $slave_prefix $slave_suffix);
95 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
96 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
97 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
99 use vars qw(%zone_cfg @zone_cfg_list);
103 use vars qw($output $default_output %output_contents);
106 %output_contents= ();
108 use vars qw($check $install);
109 $check= $mode !~ m/^f/;
110 $install= $mode =~ m/^[yf]/;
112 read_config($etcfile);
113 debug_dump('@zone_cfg_list %zone_cfg');
114 process_zones($mode ? @zone_cfg_list : @ARGV);
115 debug_dump('%output_contents');
116 output_files() if $install;
120 #-------------------- configuration reading
122 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
124 sub read_config ($) {
126 my ($fh,$z,@self,$before,
127 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
130 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
133 if (!defined($_= <$fh>)) {
134 cfg_fail("read config file $if:\n $!") if $fh->error();
138 if (s/\\$//) { $before.= $_; next; }
146 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
147 @self= split /\s+/, $2;
148 @self_ns= @self if $1 ne '-soa';
149 @self_soa= @self if $1 ne '-ns';
150 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
151 @conv_glueless= split /\s+/, $1;
152 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
153 @self_addr= split /\s+/, $1;
154 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
155 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
159 (?: \s+ ([^/ \t]*) (?: (/.+) )?
162 ($mod, $dir, $prefix, $suffix, $subfile) =
163 ($1,qualify($2),$3,$4,$5);
164 $suffix= '' if !defined $suffix;
165 $subfile= '' if !defined $subfile;
166 $suffix= '_db' if !length $suffix && !length $subfile;
167 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
168 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
169 $lprefix= length $prefix; $lsuffix= length $suffix;
170 while (defined($_= readdir D)) {
171 next if m/^\./ && !$lprefix;
172 next unless length > $lprefix+$lsuffix;
173 next unless substr($_,0,$lprefix) eq $prefix;
174 next unless substr($_,length($_)-$lsuffix) eq $suffix;
175 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
176 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
178 next if length $subfile && $! == &ENOENT;
179 cfg_fail("cannot stat zonefile $zf:\n $!");
181 -f _ or cfg_fail("zonefile $zf is not a plain file");
182 zone_conf($z,'primary','p',$mod,$zf);
184 closedir D or cfg_fail("close primary-dir $dir:\n $!");
185 } elsif (m/^primary([*?]?)\s+(\S+)\s+(\S+)$/) {
186 zone_conf($2,'primary','p',$1,qualify($3));
187 } elsif (m/^published([*?]?)\s+(\S+)\s+([0-9.\t]+)$/) {
188 zone_conf($2,'published','s',$1,'',$3);
189 } elsif (m/^stealth([*?]?)\s+(\S+)\s+([0-9. \t]+)$/) {
190 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
191 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
192 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
193 $slave_prefix='' if !defined $slave_prefix;
194 $slave_suffix='' if !defined $slave_suffix;
195 } elsif (m/^output\s+bind8\+(\S+)$/) {
196 cfg_fail("default output may not apply to only some zones")
197 if @zone_cfg_list && length $default_output;
198 set_output(qualify($1));
199 } elsif (m/^include\s+(\S+)$/) {
202 cfg_fail("unknown configuration directive".
203 " or incorrect syntax or arguments:\n".
207 $fh->close or cfg_fail("close config file $if:\n $!");
212 $i= "$default_dir$i" unless $i =~ m,^/,;
216 sub zone_conf ($$$$$@) {
217 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
219 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
221 if (!length $output) {
222 $default_output= qualify('chiark-conf-gen.bind8')
223 unless length $default_output;
224 set_output($default_output);
226 cfg_fail("redefined zone $zone\n".
227 " earlier definition $zone_cfg{$zone}{'where'}")
228 if exists $zone_cfg{$zone};
229 $zone_cfg{$zone}{'where'}= $where;
230 $zone_cfg{$zone}{'file'}= $file;
231 $zone_cfg{$zone}{'style_p'}= $style.$mod;
232 $zone_cfg{$zone}{'s'}= $sabbr.$mod; # p)rimary s)econdary u)npub f)oreign
233 $zone_cfg{$zone}{'servers'}= [ @servers ];
234 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
235 { no strict 'refs'; $aref= [ @$sfx ]; }
236 @$aref or cfg_fail("failed to specify $sfx before zone")
238 $zone_cfg{$zone}{$sfx}= $aref;
240 $zone_cfg{$zone}{'output'}= $output;
241 push @zone_cfg_list, $zone;
247 $output_contents{$output}= '';
251 #-------------------- checking
253 use vars qw($zone $cfg $warnings %zone_warnings);
257 return if !$verbosity;
262 return if $verbosity<2;
266 sub process_zones (@) {
270 foreach $zone (@zones) {
272 $cfg= $zone_cfg{$zone} || {
273 'style_p' => 'foreign',
277 progress(sprintf "%-40s %s", $zone, $$cfg{'style_p'});
278 if ($check && ($doall || $cfg->{'s'} !~ m/\?/)) {
280 if ($localonly && $cfg->{'s'} =~ m/f/) {
281 zone_warning("foreign zone specified with -l",'');
282 } elsif ($cfg->{'s'} =~ m/\*/ ||
283 ($localonly && $cfg->{'s'} !~ m/p/)) {
289 zone_warning("checks failed: $@",'') if length $@;
291 $output_contents{$$cfg{'output'}} .= zone_output()
295 printf STDERR ("%s: %d warning(s) in %d zone(s);".
296 " %d zone(s) checked ok.\n",
299 scalar(keys %zone_warnings),
300 scalar(@zones - keys %zone_warnings));
302 progress(sprintf "%d zone(s) checked ok", scalar @zones);
306 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
307 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
308 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
309 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
310 use vars qw(%addr_is_ok %warned);
311 use vars qw($delg_to_us);
312 use vars qw(@to_check); # ($addr,$whyask,$is_auth,$glueless_ok, ...)
313 use vars qw(@to_check_soa); # ($addr,$whyask, ...)
315 sub zone_warning ($$) {
319 return 0 if !$repeat && $warned{$w}++;
324 $w .= " ($o)" if length $o;
325 print STDERR "$zone: warning: $w\n" or die $!;
327 $zone_warnings{$zone}++;
331 sub zone_warnmore ($) {
332 print STDERR "$zone: $_[0]\n" or die $!;
335 sub zone_check_full () {
342 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
344 @to_check= @to_check_soa= ();
347 sub zone_investigate() {
348 my ($super_zone, @super_nsnames,
349 $super_ns, @super_ns_addrs, $s, $wa, $is_auth,
350 %nsrrset_checked, %soa_checked, $addr, $glueless_ok, $rcode);
354 debug_trace("zone $zone superzone $super_zone");
355 $super_zone =~ s/^[^.]+\.// or die "no superzone ? ($super_zone)\n";
356 ($rcode,@super_nsnames)=
357 lookup($super_zone,'ns-','06',"superzone search");
360 for $super_ns (@super_nsnames) {
361 $super_ns= lc $super_ns;
362 ($rcode,@super_ns_addrs)=
363 lookup($super_ns,'a','0',"published nameserver");
364 foreach $addr (@super_ns_addrs) {
367 "$super_ns, server for $super_zone",
372 # We do these in order so that we always do NS RRset checks on
373 # nameservers that came from other NS RRsets first; otherwise
374 # we might set nsrrset_checked due to a glueless_ok check,
375 # and then not check for gluefulness later.
376 debug_dump('@to_check @to_check_soa');
377 if (($addr,$wa,$is_auth,$glueless_ok,@to_check) = @to_check) {
378 push @to_check_soa, $addr, $wa if $is_auth;
379 next if $nsrrset_checked{$addr}++;
380 zone_check_nsrrset($addr, $wa, $is_auth, $glueless_ok);
381 } elsif (($addr,$wa,@to_check_soa) = @to_check_soa) {
382 next if $soa_checked{$addr}++;
383 zone_check_soa($addr, $wa, "NS [$addr]");
390 sub zone_check_nsrrset ($$$$) {
391 my ($uaddr,$wa, $is_auth, $glueless_ok) = @_;
392 my (@s, $s, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
394 verbose("checking delegation by $ww");
396 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
397 $s2g{lc $dig_rdata} = [ ];
398 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
399 $wwn= "in glue from $ww";
400 push @to_check, $dig_rdata, "$dig_owner, $wwn", 1, 0;
401 zone_server_addr($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
402 push @{ $s2g{$dig_owner} }, $dig_rdata;
407 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
409 } elsif (keys %s2g == 1) {
410 zone_warning("only one nameserver ". (join '', keys %s2g),
415 zone_ns_name($s,$ww);
416 @glue= @{ $s2g{$s} };
418 zone_warning("glueless NS $s", $ww)
419 unless $glueless_ok || !$needglue ||
420 grep { has_suffix_of($s,".$_"); }
421 @{ $cfg->{'conv_glueless'} };
424 $glue= join ' ', sort @glue;
425 push @{ $glue{$s}{$glue} }, $ww;
428 $delgs_or_auths= $is_auth ? \%auths : \%delgs;
429 push @{ $delgs_or_auths->{$s} }, $ww;
432 sub zone_ns_name ($$) {
435 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
436 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
437 zone_warning("nameserver $name in serverless-glueless".
438 " namespace area $cg",
440 if has_suffix_of(".$name",".$cg");
442 zone_warning("published server, as $name, but configured as stealth",
444 if $cfg->{'s'} =~ m/u/ &&
446 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
449 sub zone_server_addr ($$$$$) {
450 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
451 debug_trace("zone_server_addr ".join '|',@_);
452 $addr_is_ok{$addr}= "$name ($wwq)"
453 if $is_soa || $cfg->{'s'} =~ m/u/;
454 zone_warning("forbidden nameserver address [$addr] $name",$ww)
455 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
457 my ($name_is_self, $addr_is_self);
458 $name_is_self= grep { $_ eq $name }
459 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
460 $addr_is_self= grep { $_ eq $addr }
461 @{ $cfg->{'self_addr'} };
462 if ($name_is_self && !$addr_is_self) {
463 zone_warning("our $name supplied with wrong address [$addr]", $ww);
465 if (!$name_is_self && $addr_is_self) {
466 zone_warning("we [$addr] are named in ".
467 ($is_soa ? "SOA" : "NS").
468 " by wrong name $name",
471 if (!$name_is_self && !$addr_is_self &&
472 $is_soa && $cfg->{'s'} =~ m/p/) {
473 zone_warning("SOA ORIGIN $name is not us (".
474 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
476 $delg_to_us=1 if $addr_is_self && !$is_soa;
479 sub zone_check_soa ($$$) {
480 my ($uaddr,$wa,$waq) = @_;
481 my ($lame,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
482 verbose("checking service at [$uaddr] $waq");
483 $lame= 'dead or lame';
486 if ($dig_type eq 'flags:') {
487 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
488 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
489 die "several SOAs ? $ww" if defined $origin;
491 $got =~ m/^\d+ (\S+)$/ or die "$got ?";
496 $lame= 'broken' if !$lame && !defined $origin;
497 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
498 push @{ $soas{$got} }, $ww;
499 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
500 $wwn= "SOA ORIGIN from $ww";
501 foreach $soa_addr (@soa_addrs) {
502 zone_server_addr($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
503 push @to_check, $soa_addr, "$origin, $wwn";
507 sub zone_consistency() {
508 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
509 zone_consistency_set('delegations',\%delgs);
510 foreach $d (keys %delgs) { delete $auths{$d}; }
511 zone_consistency_set('zone nameserver rrset',\%auths);
512 foreach $h (keys %glue) {
513 zone_consistency_set("glue for $h", $glue{$h});
515 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
516 $self_soa= $cfg->{'self_soa'};
519 sub zone_servers_ok () {
523 foreach $a (@{ $cfg->{'servers'} }) {
524 next if exists $addr_is_ok{$a};
525 zone_warning("we slave from [$a]",'')
529 foreach $a (keys %addr_is_ok) {
530 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
534 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
535 zone_warning("we are supposedly published secondary,".
536 " but not listed as a nameserver",'');
537 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
538 zone_warnmore("servers are: ". join ' ', sort keys %fs);
542 sub zone_consistency_set ($%) {
545 if (keys(%$set) > 1) {
546 zone_warning("inconsistent $msg:",'');
547 foreach $d (keys %$set) {
548 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
553 sub zone_check_local () {
554 zone_servers_simplefind();
558 sub zone_servers_simplefind () {
559 my ($rcode,@nsnames,$ns,@soas,$origin);
561 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
562 foreach $ns (@nsnames) {
563 zone_ns_name($ns,"NS");
564 zone_server_simple($ns,'NS',0);
567 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
568 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
569 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
570 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
573 sub zone_server_simple ($$$) {
574 my ($name,$ww,$is_soa) = @_;
575 my ($rcode,@addrs,$addr);
576 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
577 ($is_soa ? "SOA ORIGIN" : "NS"));
578 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
581 #-------------------- outputting
586 $o= "zone \"$zone\" {\n";
587 if ($$cfg{'s'} =~ m/p/) {
588 $o.= " type master;\n";
590 $o.= " type slave;\n".
592 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
595 $o.= " file \"$$cfg{'file'}\";\n";
600 sub output_files () {
601 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
603 foreach $ofn (keys %output_contents) {
604 $fn= $ofn; $mfn= "output file $fn";
607 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
611 $maxmode= (stat _)[2];
614 defined($l= readlink $fn)
615 or die "$quis: readlink $mfn:\n $!\n";
616 $dir= $fn =~ m,^.*/, ? $& : './';
617 $fn= "$dir$l" unless $l =~ m,^/,;
618 $mfn= "output file $fn (symlink target of $ofn)";
620 die "$quis: output file $mfn exists but is not a file".
621 " (or symlink to one)";
624 unlink "$fn.new" or $! == &ENOENT or
625 die "$quis: cannot clear out old .new version of $mfn:\n $!";
626 $h= new IO::File "$fn.new",'w',$maxmode
627 or die("$quis: create .new version of $mfn:\n $!");
629 "# generated by $quis, do not edit\n",
630 $output_contents{$ofn}
631 or die "$quis: write data to .new version of $mfn:\n $!";
633 or die "$quis: close .new version of $mfn:\n $!";
634 push @to_install, $fn,$mfn;
637 while (($fn,$mfn, @to_install) = @to_install) {
639 or die "$quis: install new version of $mfn:\n $!";
643 #-------------------- general utilities
647 return unless $debug>1;
648 local $Data::Dumper::Terse=1;
649 foreach $vn (split /\s+/, $_[0]) {
650 print "$vn := ", eval "Dumper(\\$vn)";
654 sub debug_trace ($) {
655 return unless $debug;
659 sub has_suffix_of ($$) {
660 my ($whole,$suffix) = @_;
661 debug_trace("has_suffix_of $whole $suffix");
662 return 0 if length $whole < length $suffix;
663 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
664 debug_trace("has_suffix_of $whole $suffix YES");
669 my ($domain,$type,$okrcodes,$w) = @_;
671 debug_trace("lookup ==> (->$okrcodes) $domain $type");
674 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
676 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
678 die "$quis: exec adnshost:\n $!\n";
680 @result= $h->getlines();
681 $h->error and die "$quis: read from adnshost:\n $!\n";
684 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
685 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
686 debug_trace("lookup <== $? @result");
691 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
692 # also pseudo-rr with type `flags:'
693 my ($h,$inmid,$irdata,$c,$digwhy);
696 debug_trace("dig ==> \@$qaddr $qowner $qtype");
699 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
701 open STDERR, ">&STDOUT" or die $!;
703 '+nodef','+nosea','+nodebug','+norecurse',
704 "\@$qaddr",'-t',$qtype,$qowner);
705 die "$quis: exec dig:\n $!\n";
709 if (!defined($_= $h->getline())) {
710 $h->error() and die "$quis: read from dig:\n $!\n";
715 s/^\s+/ / or die "$inmid // $_ ?";
719 s/$/ \(/ unless s/\s*\)\s*$//;
721 if (s/\s*\(\s*$//) { $inmid= $_; next; }
722 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
723 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
724 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
725 debug_trace("dig f: $dig_rdata");
729 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
730 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
731 if ($dig_type eq 'a') {
732 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
734 } elsif ($dig_type eq 'ns') {
735 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
736 $dig_rdata= domain_canon($irdata,$digwhy);
737 } elsif ($dig_type eq 'soa') {
738 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
739 or die "bad SOA $irdata ?";
740 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
742 debug_trace("ignoring uknown RR type $dig_type");
745 debug_trace("dig $dig_owner $dig_type $dig_rdata");
748 debug_trace("ignoring unknown dig output $_");
752 debug_trace("dig <== gave $?");
755 sub domain_canon ($$) {
758 return '.' if $i eq '.';
759 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;