2 # This is chiark-named-conf, which is Copyright 2002 Ian Jackson.
4 # chiark-named-conf and its manpage are free software; you can
5 # redistribute it and/or modify them under the terms of the GNU
6 # General Public License as published by the Free Software Foundation;
7 # either version 2, or (at your option) any later version.
9 # chiark-named-conf and its manpage are distributed in the hope that
10 # it will be useful, but WITHOUT ANY WARRANTY; without even the
11 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 # PURPOSE. See the GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License along
15 # with this program; if not, write to the Free Software Foundation, Inc.,
16 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 use Fcntl qw(:DEFAULT :flock);
24 # bastard Perl wants me to do this now !
31 sub bad_modifiers ($);
32 sub zone_conf ($$$$$@);
36 sub process_zones (@);
37 sub zone_warning ($$);
38 sub zone_warnmore ($);
39 sub zone_check_full ();
41 sub zone_investigate();
42 sub zone_check_nsrrset ($$$$);
43 sub zone_ns_name ($$);
44 sub zone_server_queue ($$$$$);
45 sub zone_server_addr ($$$$$);
46 sub zone_check_soa ($$$$);
47 sub zone_consistency();
48 sub zone_servers_ok ();
49 sub zone_consistency_set ($%);
50 sub zone_check_local ();
51 sub zone_servers_simplefind ();
52 sub zone_server_simple ($$$);
54 sub mail_zone_before ();
55 sub mail_zone_after ();
58 sub mail_zone_mail ();
63 sub has_suffix_of ($$);
66 sub domain_canon ($$);
68 use vars qw($quis $stdout_fh $stderr_fh
71 $debug $needglue $localonly $repeat $verbosity
72 $admin $mail_state_dir $mail_max_warnfreq
73 $progress_fh $warn_fh $modifiers
74 %group2modcmd %group2used);
76 $quis= $0; $quis =~ s,.*/,,;
80 $etcfile= "/etc/bind/chiark-conf-gen.zones";
86 $admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
90 $group2modcmd{'foreign'}= '$!*@?';
91 $group2used{'foreign'}= 1;
93 ($progress_fh= $stdout_fh= new_from_fd IO::Handle(1,'w') and
94 $warn_fh= $stderr_fh = new_from_fd IO::Handle(2,'w'))
95 or die "$quis: setup standard filehandles: $!\n";
97 use vars qw($dig_owner $dig_type $dig_rdata);
99 while (@ARGV && $ARGV[0] =~ m/^\-/) {
103 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
104 elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
105 elsif (m/^mail\-(first|middle|final|final\-test)$/) {
109 elsif (m/^all$/) { $doall=1; }
110 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
111 elsif (m/^glueless$/) { $needglue=0; }
112 elsif (m/^localonly$/) { $localonly=1; }
113 elsif (m/^quiet$/) { $verbosity--; }
114 elsif (m/^repeat$/) { $repeat=1; }
115 elsif (m/^verbose$/) { $verbosity++; }
116 else { usageerr("unknown option --$_"); }
121 if (s/^[ynf]//) { $mode=$&; $domail=''; }
122 elsif (s/^A//) { $doall=1; }
123 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
124 elsif (s/^D//) { $debug++; }
125 elsif (s/^g//) { $needglue=0; }
126 elsif (s/^l//) { $localonly=1; }
127 elsif (s/^m(\w+)(\W+)$//) {
128 my ($g,$m) = ($1,$2);
129 $group2modcmd{$g}=$m;
130 usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
132 elsif (s/^q//) { $verbosity--; }
133 elsif (s/^r//) { $repeat=1; }
134 elsif (s/^v//) { $verbosity++; }
135 else { usageerr("unknown option -$&"); }
140 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
141 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
143 usageerr("-q may be specified at most twice") if $verbosity<0;
144 usageerr("-v may be specified at most once") if $verbosity>3;
145 usageerr("-D may be specified at most twice") if $debug>2;
146 usageerr("must specify either -f|-y|-n or zones (and not both)")
147 if !!$mode == !!@ARGV && !$domail;
153 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
155 -f --force install without checking
156 -y --yes check and install
157 -n --no check only (configured zones)
158 --nothing list zones only
159 --mail-* send mail about broken zones (see manpage)
160 <zone> ... check only (specified zones, even unconfigured ones)
162 -A --all report on zones marked ? (ones we know are broken)
163 -D debug $quis (does not help debug your DNS config)
164 -g --glueless do not warn about any glueless referrals (not recommended)
165 -l --localonly full checks only on zones which we primary
166 -q --quiet no output for OK zones
167 -r --repeat repeat warnings for all sources of imperfect data
168 -v --verbose extra verbose info about each zone
169 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
171 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
172 the GNU General Public License, and you are welcome to change it and/or
173 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
177 cfg_fail("config filename $etcfile should not be directory")
178 if $etcfile =~ m,/$,;
180 use vars qw($default_dir);
181 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
183 use vars qw($slave_dir $slave_prefix $slave_suffix);
188 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
189 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
190 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
192 use vars qw(%zone_cfg @zone_cfg_list);
196 use vars qw($output $default_output %output_contents);
199 %output_contents= ();
201 use vars qw($check $install);
202 $check= $mode !~ m/^[fx]/;
203 $install= $mode =~ m/^[yf]/;
205 read_config($etcfile);
206 debug_dump('@zone_cfg_list %zone_cfg');
207 process_zones(!@ARGV ? @zone_cfg_list : @ARGV);
208 debug_dump('%output_contents');
209 output_files() if $install;
211 $stdout_fh->close or die "$quis: write messages to stdout: $!\n";
212 $stderr_fh->close or die "$quis: write messages to stderr: $!\n";
215 #-------------------- configuration reading
217 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
219 sub read_config ($) {
221 my ($fh,$z,@self,$before,$group,
222 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
225 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
228 if (!defined($_= <$fh>)) {
229 cfg_fail("read config file $if:\n $!") if $fh->error();
233 if (s/\\$//) { $before.= $_; next; }
241 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
242 @self= split /\s+/, $2;
243 @self_ns= @self if $1 ne '-soa';
244 @self_soa= @self if $1 ne '-ns';
245 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
246 @conv_glueless= split /\s+/, $1;
247 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
248 @self_addr= split /\s+/, $1;
249 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
250 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
254 (?: \s+ ([^/ \t]*) (?: (/.+) )?
257 ($mod, $dir, $prefix, $suffix, $subfile) =
258 ($1,qualify($2),$3,$4,$5);
259 cfg_fail("modifiers $mod for directory $dir: $@")
260 if bad_modifiers($mod);
261 $suffix= '' if !defined $suffix;
262 $subfile= '' if !defined $subfile;
263 $suffix= '_db' if !length $suffix && !length $subfile;
264 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
265 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
266 $lprefix= length $prefix; $lsuffix= length $suffix;
267 while (defined($_= readdir D)) {
268 next if m/^\./ && !$lprefix;
269 next unless length > $lprefix+$lsuffix;
270 next unless substr($_,0,$lprefix) eq $prefix;
271 next unless substr($_,length($_)-$lsuffix) eq $suffix;
272 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
273 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
275 next if length $subfile && $! == &ENOENT;
276 cfg_fail("cannot stat zonefile $zf:\n $!");
278 -f _ or cfg_fail("zonefile $zf is not a plain file");
279 zone_conf($z,'primary','p',$mod,$zf);
281 closedir D or cfg_fail("close primary-dir $dir:\n $!");
282 } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
283 zone_conf($2,'primary','p',$1,qualify($3));
284 } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
285 zone_conf($2,'published','s',$1,'',$3);
286 } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
287 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
288 } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
289 ($mod,$group) = ($1,$2);
290 cfg_fail("modifiers $mod for group $group: $@")
291 if bad_modifiers($mod);
292 if (exists $group2modcmd{$group}) {
293 $mod= $group2modcmd{$group};
294 $group2used{$group}++;
297 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
298 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
299 $slave_prefix='' if !defined $slave_prefix;
300 $slave_suffix='' if !defined $slave_suffix;
301 } elsif (m/^output\s+bind8\+(\S+)$/) {
302 cfg_fail("default output may not apply to only some zones")
303 if @zone_cfg_list && length $default_output;
304 set_output(qualify($1));
305 } elsif (m/^include\s+(\S+)$/) {
307 } elsif (m/^admin\s+(\S+)$/) {
309 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
311 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?)$/) {
312 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
313 $mail_max_warnfreq= $1;
315 cfg_fail("unknown configuration directive".
316 " or incorrect syntax or arguments:\n".
320 foreach $group (keys %group2modcmd) {
321 next if exists $group2used{$group};
322 cfg_fail("command line specifies modifier group $group".
323 " but missing in configuration file");
325 $fh->close or cfg_fail("close config file $if:\n $!");
330 $i= "$default_dir$i" unless $i =~ m,^/,;
334 sub bad_modifiers ($) {
337 die "bad modifier $&" if m/[^!*\$\@~?]/;
338 die "repeated modifier $1" if m/(.).*\1/;
347 sub zone_conf ($$$$$@) {
348 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
350 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
352 if (!length $output) {
353 $default_output= qualify('chiark-conf-gen.bind8')
354 unless length $default_output;
355 set_output($default_output);
357 cfg_fail("redefined zone $zone\n".
358 " earlier definition $zone_cfg{$zone}{'where'}")
359 if exists $zone_cfg{$zone};
360 $zone_cfg{$zone}{'where'}= $where;
361 $zone_cfg{$zone}{'file'}= $file;
362 $zone_cfg{$zone}{'style_p'}= $style.$mod;
363 $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
364 # p)rimary s)econdary u)npub f)oreign
365 # followed by modifiers, first per-zone, then default
366 $zone_cfg{$zone}{'servers'}= [ @servers ];
368 length $admin && length $mail_state_dir or
369 cfg_fail("mailing but failed to specify admin".
370 " or mail-state-dir before zone");
371 $zone_cfg{$zone}{'admin'}= $admin;
372 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
373 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
375 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
376 { no strict 'refs'; $aref= [ @$sfx ]; }
377 @$aref or cfg_fail("failed to specify $sfx before zone")
379 $zone_cfg{$zone}{$sfx}= $aref;
381 foreach $sfx (qw(self_soa self_ns)) {
382 map { s/\*$/$zone/ } @{ $zone_cfg{$zone}{$sfx} };
384 $zone_cfg{$zone}{'output'}= $output;
385 push @zone_cfg_list, $zone;
391 $output_contents{$output}= '';
394 #-------------------- checking
396 use vars qw($zone $cfg $warnings %zone_warnings);
401 return if $verbosity < $minv;
402 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
405 sub verbose ($) { progress(3, ' ' . $_[0]); }
407 sub process_zones (@) {
411 foreach $zone (@zones) {
412 $cfg= $zone_cfg{$zone} || {
413 'style_p' => 'foreign',
414 's' => "f $group2modcmd{'foreign'}",
418 mail_zone_before() or next
421 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
422 if ($check && ($doall || !zone_style('?',0))) {
424 if ($localonly && $cfg->{'s'} =~ m/f/) {
425 zone_warning("foreign zone specified with -l",'');
426 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
432 zone_warning("checks failed: $@",'') if length $@;
434 $output_contents{$$cfg{'output'}} .= zone_output()
437 mail_zone_after() if $domail;
440 } elsif ($warnings) {
441 printf STDERR ("%s: %d warning(s) in %d zone(s);".
442 " %d zone(s) checked ok.\n",
445 scalar(keys %zone_warnings),
446 scalar(@zones - keys %zone_warnings));
448 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
452 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
453 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
454 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
455 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
456 use vars qw(%addr_is_ok %warned);
457 use vars qw($delg_to_us);
458 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
459 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
461 sub zone_warning ($$) {
465 return 0 if !$repeat && $warned{$w}++;
470 $w .= " ($o)" if length $o;
471 print $warn_fh "$zone: warning: $w\n" or die $!;
473 $zone_warnings{$zone}++;
477 sub zone_warnmore ($) {
478 print $warn_fh "$zone: $_[0]\n" or die $!;
481 sub zone_check_full () {
488 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
490 @to_check= @to_check_soa= ();
493 sub zone_investigate() {
494 my ($super_zone, @start_nsnames, $start_ww,
495 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
496 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
497 $rcode, $name, $is_ns);
499 if (!zone_style('*',0)) {
502 debug_trace("zone $zone superzone $super_zone");
504 and die "no superzone ? ($super_zone)\n";
505 $super_zone =~ s/^[^.]+\.//
507 ($rcode,@start_nsnames)=
508 lookup($super_zone,'ns-','06',"superzone search");
511 $start_ww= "server for $super_zone";
513 ($rcode,@start_nsnames)=
514 lookup($zone,'ns-','0',"initial nameserver search");
515 $start_ww= "nameserver for $zone";
517 for $start_ns (@start_nsnames) {
518 $start_ns= lc $start_ns;
519 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
520 foreach $addr (@start_ns_addrs) {
521 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
525 # We do these in order so that we always do NS RRset checks on
526 # nameservers that came from other NS RRsets first; otherwise
527 # we might set nsrrset_checked due to a glueless_ok check,
528 # and then not check for gluefulness later.
529 debug_dump('@to_check @to_check_soa');
530 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
531 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
532 if defined $name_if_auth;
533 next if $nsrrset_checked{$addr}++;
534 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
535 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
536 next if $soa_checked{$addr}++;
537 zone_check_soa($addr,$wa,$name,$is_ns);
544 sub zone_check_nsrrset ($$$$) {
545 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
546 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
549 verbose("checking delegation by $ww");
551 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
552 $s2g{lc $dig_rdata} = [ ];
553 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
554 $wwn= "in glue from $ww";
555 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
556 push @{ $s2g{$dig_owner} }, $dig_rdata;
561 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
563 } elsif (keys %s2g == 1) {
564 zone_warning("only one nameserver ". (join '', keys %s2g),
569 zone_ns_name($s,$ww);
570 @glue= @{ $s2g{$s} };
572 zone_warning("glueless NS $s", $ww)
573 unless $glueless_ok || zone_style('~',!$needglue) ||
574 grep { has_suffix_of($zone,".$_"); }
575 @{ $cfg->{'conv_glueless'} };
576 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
578 $wwn= "glueless NS from $ww";
579 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
582 $glue= join ' ', sort @glue;
583 push @{ $glue{$s}{$glue} }, $ww;
586 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
587 push @{ $delgs_or_auths->{$s} }, $ww;
590 sub zone_ns_name ($$) {
593 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
594 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
595 zone_warning("nameserver $name in serverless-glueless".
596 " namespace area $cg",
598 if has_suffix_of(".$name",".$cg");
600 zone_warning("published server, as $name, but configured as stealth",
602 if $cfg->{'s'} =~ m/u/ &&
604 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
607 sub zone_server_queue ($$$$$) {
608 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
609 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
610 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
613 sub zone_server_addr ($$$$$) {
614 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
615 debug_trace("zone_server_addr ".join '|',@_);
616 $addr_is_ok{$addr}= "$name ($wwq)"
617 if $is_soa || $cfg->{'s'} =~ m/u/;
618 zone_warning("forbidden nameserver address [$addr] $name",$ww)
619 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
621 my ($name_is_self, $addr_is_self);
622 $name_is_self= grep { $_ eq $name }
623 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
624 $addr_is_self= grep { $_ eq $addr }
625 @{ $cfg->{'self_addr'} };
626 if ($name_is_self && !$addr_is_self) {
627 zone_warning("our $name supplied with wrong address [$addr]", $ww);
629 if (!$name_is_self && $addr_is_self) {
630 zone_warning("we [$addr] are named in ".
631 ($is_soa ? "SOA" : "NS").
632 " by wrong name $name",
635 if (!$name_is_self && !$addr_is_self &&
636 $is_soa && $cfg->{'s'} =~ m/p/) {
637 zone_warning("SOA ORIGIN $name is not us (".
638 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
640 $delg_to_us=1 if $addr_is_self && !$is_soa;
643 sub zone_check_soa ($$$$) {
644 my ($uaddr,$wa,$name,$is_ns) = @_;
645 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
646 verbose("checking service at [$uaddr] $name");
647 $lame= 'dead or lame';
650 if ($dig_type eq 'flags:') {
651 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
652 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
653 die "several SOAs ? $ww" if defined $origin;
655 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
656 ($serial,$origin) = ($1,$2);
660 $lame= 'broken' if !$lame && !defined $origin;
661 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
662 progress(2, sprintf "%-16s %46s has %s%s",
663 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
664 push @{ $soas{$got} }, $ww;
665 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
666 $wwn= "SOA ORIGIN from $ww";
667 foreach $soa_addr (@soa_addrs) {
668 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
672 sub zone_consistency() {
673 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
674 zone_consistency_set('delegations',\%delgs);
675 foreach $d (keys %delgs) { delete $auths{$d}; }
676 zone_consistency_set('zone nameserver rrset',\%auths);
677 foreach $h (keys %glue) {
678 zone_consistency_set("glue for $h", $glue{$h});
680 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
681 $self_soa= $cfg->{'self_soa'};
684 sub zone_servers_ok () {
688 foreach $a (@{ $cfg->{'servers'} }) {
689 next if exists $addr_is_ok{$a};
690 zone_warning("we slave from [$a]",'')
694 foreach $a (keys %addr_is_ok) {
695 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
699 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
700 zone_warning("we are supposedly published secondary,".
701 " but not listed as a nameserver",'');
702 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
703 zone_warnmore("servers are: ". join ' ', sort keys %fs);
707 sub zone_consistency_set ($%) {
710 if (keys(%$set) > 1) {
711 zone_warning("inconsistent $msg:",'');
712 foreach $d (keys %$set) {
713 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
718 sub zone_check_local () {
719 zone_servers_simplefind();
723 sub zone_servers_simplefind () {
724 my ($rcode,@nsnames,$ns,@soas,$origin);
726 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
727 foreach $ns (@nsnames) {
728 zone_ns_name($ns,"NS");
729 zone_server_simple($ns,'NS',0);
731 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
733 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
734 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
735 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
736 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
739 sub zone_server_simple ($$$) {
740 my ($name,$ww,$is_soa) = @_;
741 my ($rcode,@addrs,$addr);
742 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
743 ($is_soa ? "SOA ORIGIN" : "NS"));
744 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
747 sub zone_style ($$) {
748 my ($stylechar, $default) = @_;
749 local ($_) = $$cfg{'s'};
750 $stylechar =~ s/\W/\\$&/ or die;
751 return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
754 #-------------------- mailing
756 use vars qw($m_base $m_lastok @m_ok @m_fail
757 $m_info $m_time $m_lock $m_m);
759 sub mail_zone_before () {
762 $m_base= $$cfg{'maildir'}.'/'.$zone;
768 $m_lock= new IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
769 or die "$quis: create lockfile ${m_base}_lock: $!\n";
770 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
771 <$m_lock> =~ m/^\d+ /;
772 die "$quis: $zone: concurrrency? - flock $&$!\n";
776 (@s1= $m_lock->stat) or die "$quis: fstat ${m_base}_lock: $!\n";
777 (@s2= stat "${m_base}_lock") or
778 die "$quis: stat ${m_base}_lock: $!\n";
779 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
782 (print $m_lock "$$ \n" and $m_lock->flush)
783 or die "$quis: write pid to ${m_base}_lock: $!\n";
785 if ($m_info= new IO::File "${m_base}_info", 'r') {
787 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
788 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
789 die "$quis: ${m_base}_info malformed\n";
791 if ($domail ne 'first') {
792 if ($2 eq ':' && $3 eq ':') {
793 warn "$quis: $zone: mid/last run, but last".
794 "run already done, ignoring zone\n";
797 @m_ok= split /\:/, $2;
798 @m_fail= split /\:/, $3;
800 } elsif ($! != &ENOENT) {
801 die "$quis: open ${m_base}_info: $!\n";
802 } elsif ($domail ne 'first') {
803 warn "$quis: $zone: first run, but not --mail-first,".
807 if ($domail eq 'first') {
808 remove "${m_base}_history" or $!==&ENOENT
809 or die "$quis: remove ${m_base}_history: $!\n";
811 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
812 or die "$quis: open ${m_base}_history: $!\n";
813 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
814 or die "$quis: open ${m_base}_info.tmp: $!\n";
817 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
821 sub mail_zone_after () {
822 if ($zone_warnings{$zone}) {
823 push @m_fail, $m_time;
824 progress(-1,"failed - $zone_warnings{$zone} warnings");
828 progress(-1,"everything is fine");
830 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
831 $progress_fh= $warn_fh= $stderr_fh;
833 if ($domail =~ m/^final/) {
834 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_fail + @m_ok)) {
835 printf " %-40s ok\n", $zone or die "$quis: mail ok report: $!\n";
836 } elsif (zone_style('@',0)) {
837 printf " %-40s mail suppressed\n", $zone
838 or die "$quis: mail suppress report: $!\n";
843 printf " %-40s %d warns. OK %s Fail %s\n",
845 defined $zone_warnings{$zone} ? $zone_warnings{$zone} : 0,
846 join(',', map { $_ - $m_time } @m_ok),
847 join(',', map { $_ - $m_time } @m_fail)
848 or die "$quis: checking progress report: $!\n";
851 @m_fail= @m_ok= ('','')
852 if $domail =~ m/^final/;
854 printf $m_info "%s %s %s %s \n",
855 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
856 or die "$quis: write new ${m_base}_info: $!\n";
857 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
858 rename "${m_base}_info.tmp", "${m_base}_info"
859 or die "$quis: install new ${m_base}_info: $!\n";
866 or die "$quis: write ${m_base}_mail: $!\n";
870 return gmtime($time)." GMT ($time)";
873 sub mail_zone_mail () {
874 my ($log, $zone_to, $zterr, $c, $r, $t, @soas);
875 $m_m= new IO::File "${m_base}_mail", 'w', 0666
876 or die "$quis: create ${m_base}_mail: $!\n";
877 $zone_to=''; $zterr='';
878 if (!zone_style("\$", $$cfg{'s'} !~ m/[ps]/)) {
880 ($r,@soas)= lookup($zone,'soa','0','problem-addr');
881 @soas==1 or die "multiple soas\n";
882 $soas[0] =~ m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
883 die "bad soa \`$_'\n";
890 From: zone checker <$$cfg{'admin'}>
891 Subject: $zone - configuration problems report
895 pmail("(testing!) ") if $domail ne 'final';
896 pmail("SOA MNAME for $zone <$zone_to>\nCC: ") if length($zone_to);
897 pmail($$cfg{'admin'}."\n\n");
899 You are receiving this mail because your email address is listed
900 in the SOA (Start Of Authority) record for $zone
901 in the DNS, which means you are supposedly the DNS administrator
902 responsible for this zone. This report is generated automatically
903 on behalf of $$cfg{'admin'}, who
904 is the administrator for a server for the zone. Please contact
905 them if you have any problem with this report.
910 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
916 The zone has had configuration errors or persistent operational
917 problems during recent checks. See the logs below for details.
919 Recent check history for $zone:
922 if ($m_lastok ne '-') {
923 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
925 pmail(" No record of this zone ever being fine.\n");
928 pmail(" Zone had problems at: ".ptime($t)."\n");
931 pmail(" Everything in order at: ".ptime($t)."\n");
934 $log= new IO::File "${m_base}_history",'r'
935 or die "$quis: reopen ${m_base}_history: $!";
937 pmail($log->getline);
939 (!$log->error and $log->close)
940 or die "$quis: reread or close ${m_base}_log: $!\n";
942 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
943 $m_m= new IO::File "${m_base}_mail"
944 or die "$quis: reopen ${m_base}_mail: $!";
946 defined($c= fork) or die "$quis: fork for mail: $!\n";
948 defined dup2($m_m->fileno, 0)
949 or die "$quis - sendmail: dup for stdin: $!\n";
950 exec (qw(/usr/sbin/sendmail -odb -oee -oi),
951 ($domail eq 'final' ? '-t' : $$cfg{'admin'}));
952 die "$quis - sendmail: exec: $!\n";
955 $!=0; $r= waitpid $c,0;
956 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
957 $? and warn "$quis: sendmail failed: $?\n";
959 printf " %-40s %s\n", $zone,
960 length $zone_to ? $zone_to : 'reporting to admin'
961 or die "$quis: write mailing report: $!\n";
964 #-------------------- outputting
969 $o= "zone \"$zone\" {\n";
970 if ($$cfg{'s'} =~ m/p/) {
971 $o.= " type master;\n";
973 $o.= " type slave;\n".
975 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
978 $o.= " file \"$$cfg{'file'}\";\n";
983 sub output_files () {
984 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
986 foreach $ofn (keys %output_contents) {
987 $fn= $ofn; $mfn= "output file $fn";
990 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
994 $maxmode= (stat _)[2];
997 defined($l= readlink $fn)
998 or die "$quis: readlink $mfn:\n $!\n";
999 $dir= $fn =~ m,^.*/, ? $& : './';
1000 $fn= "$dir$l" unless $l =~ m,^/,;
1001 $mfn= "output file $fn (symlink target of $ofn)";
1003 die "$quis: output file $mfn exists but is not a file".
1004 " (or symlink to one)";
1007 unlink "$fn.new" or $! == &ENOENT or
1008 die "$quis: cannot clear out old .new version of $mfn:\n $!";
1009 $h= new IO::File "$fn.new",'w',$maxmode
1010 or die("$quis: create .new version of $mfn:\n $!");
1012 "# generated by $quis, do not edit\n",
1013 $output_contents{$ofn}
1014 or die "$quis: write data to .new version of $mfn:\n $!";
1016 or die "$quis: close .new version of $mfn:\n $!";
1017 push @to_install, $fn,$mfn;
1020 while (($fn,$mfn, @to_install) = @to_install) {
1021 rename "$fn.new",$fn
1022 or die "$quis: install new version of $mfn:\n $!";
1026 #-------------------- general utilities
1028 sub debug_dump ($) {
1030 return unless $debug>1;
1031 local $Data::Dumper::Terse=1;
1032 foreach $vn (split /\s+/, $_[0]) {
1033 print "$vn := ", eval "Dumper(\\$vn)";
1037 sub debug_trace ($) {
1038 return unless $debug;
1042 sub has_suffix_of ($$) {
1043 my ($whole,$suffix) = @_;
1044 debug_trace("has_suffix_of $whole $suffix");
1045 return 0 if length $whole < length $suffix;
1046 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
1047 debug_trace("has_suffix_of $whole $suffix YES");
1052 my ($domain,$type,$okrcodes,$w) = @_;
1054 debug_trace("lookup ==> (->$okrcodes) $domain $type");
1057 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
1059 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
1061 die "$quis: exec adnshost:\n $!\n";
1063 @result= $h->getlines();
1064 $h->error and die "$quis: read from adnshost:\n $!\n";
1067 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
1068 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
1069 debug_trace("lookup <== $? @result");
1070 return ($?,@result);
1074 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
1075 # also pseudo-rr with type `flags:'
1076 my ($h,$inmid,$irdata,$c,$digwhy);
1079 debug_trace("dig ==> \@$qaddr $qowner $qtype");
1082 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
1084 open STDERR, ">&STDOUT" or die $!;
1086 '+nodef','+nosea','+nodebug','+norecurse',
1087 "\@$qaddr",'-t',$qtype,$qowner);
1088 die "$quis: exec dig:\n $!\n";
1092 if (!defined($_= $h->getline())) {
1093 $h->error() and die "$quis: read from dig:\n $!\n";
1097 if (length $inmid) {
1098 s/^\s+/ / or die "$inmid // $_ ?";
1102 s/$/ \(/ unless s/\s*\)\s*$//;
1104 if (s/\s*\(\s*$//) { $inmid= $_; next; }
1105 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
1106 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
1107 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
1108 debug_trace("dig f: $dig_rdata");
1112 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
1113 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
1114 if ($dig_type eq 'a') {
1115 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
1117 } elsif ($dig_type eq 'ns') {
1118 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
1119 $dig_rdata= domain_canon($irdata,$digwhy);
1120 } elsif ($dig_type eq 'soa') {
1121 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
1122 or die "bad SOA $irdata ?";
1123 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
1125 debug_trace("ignoring uknown RR type $dig_type");
1128 debug_trace("dig $dig_owner $dig_type $dig_rdata");
1131 debug_trace("ignoring unknown dig output $_");
1135 debug_trace("dig <== gave $?");
1138 sub domain_canon ($$) {
1141 return '.' if $i eq '.';
1142 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;