1 fixme implement --nothing by checking $mode='x';
3 fixme implement .* on self-soa self-ns
16 $debug $needglue $localonly $repeat $verbosity
19 $quis= $0; $quis =~ s,.*/,,;
23 $etcfile= "/etc/bind/chiark-conf-gen.zones";
29 $admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
32 $progress_fh= 'STDOUT';
35 use vars qw($dig_owner $dig_type $dig_rdata);
37 while (@ARGV && $ARGV[0] =~ m/^\-/) {
41 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
42 elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
43 elsif (m/^mail\-(first|middle|final)/) { $mode='n'; $domail=$1; }
44 elsif (m/^all$/) { $doall=1; }
45 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
46 elsif (m/^glueless$/) { $needglue=0; }
47 elsif (m/^localonly$/) { $localonly=1; }
48 elsif (m/^quiet$/) { $verbosity--; }
49 elsif (m/^repeat$/) { $repeat=1; }
50 elsif (m/^verbose$/) { $verbosity++; }
51 else { usageerr("unknown option --$_"); }
56 if (s/^[ynf]//) { $mode=$&; $domail=''; }
57 elsif (s/^A//) { $doall=1; }
58 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
59 elsif (s/^D//) { $debug++; }
60 elsif (s/^g//) { $needglue=0; }
61 elsif (s/^l//) { $localonly=1; }
62 elsif (s/^q//) { $verbosity--; }
63 elsif (s/^r//) { $repeat=1; }
64 elsif (s/^v//) { $verbosity++; }
65 else { usageerr("unknown option -$&"); }
70 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
71 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
73 usageerr("-q may be specified at most twice") if $verbosity<0;
74 usageerr("-v may be specified at most once") if $verbosity>3;
75 usageerr("-D may be specified at most twice") if $debug>2;
76 usageerr("must specify either -f|-y|-n or zones (and not both)")
77 if !!$mode == !!@ARGV;
83 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
85 -f --force install without checking
86 -y --yes check and install
87 -n --no check only (configured zones)
88 --nothing list zones only
89 --mail-* send mail about broken zones (see manpage)
90 <zone> ... check only (specified zones, even unconfigured ones)
92 -A --all report on zones marked ? (ones we know are broken)
93 -D debug $quis (does not help debug your DNS config)
94 -g --glueless do not warn about any glueless referrals (not recommended)
95 -l --localonly full checks only on zones which we primary
96 -q --quiet no output for OK zones
97 -r --repeat repeat warnings for all sources of imperfect data
98 -v --verbose extra verbose info about each zone
99 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
101 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
102 the GNU General Public License, and you are welcome to change it and/or
103 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
107 cfg_fail("config filename $etcfile should not be directory")
108 if $etcfile =~ m,/$,;
110 use vars qw($default_dir);
111 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
113 use vars qw($slave_dir $slave_prefix $slave_suffix);
118 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
119 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
120 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
122 use vars qw(%zone_cfg @zone_cfg_list);
126 use vars qw($output $default_output %output_contents);
129 %output_contents= ();
131 use vars qw($check $install);
132 $check= $mode !~ m/^f/;
133 $install= $mode =~ m/^[yf]/;
135 read_config($etcfile);
136 debug_dump('@zone_cfg_list %zone_cfg');
137 process_zones($mode ? @zone_cfg_list : @ARGV);
138 debug_dump('%output_contents');
139 output_files() if $install;
143 #-------------------- configuration reading
145 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
147 sub read_config ($) {
149 my ($fh,$z,@self,$before,
150 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
153 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
156 if (!defined($_= <$fh>)) {
157 cfg_fail("read config file $if:\n $!") if $fh->error();
161 if (s/\\$//) { $before.= $_; next; }
169 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
170 @self= split /\s+/, $2;
171 @self_ns= @self if $1 ne '-soa';
172 @self_soa= @self if $1 ne '-ns';
173 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
174 @conv_glueless= split /\s+/, $1;
175 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
176 @self_addr= split /\s+/, $1;
177 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
178 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
180 primary\-dir ([\@*?~]*)
182 (?: \s+ ([^/ \t]*) (?: (/.+) )?
185 ($mod, $dir, $prefix, $suffix, $subfile) =
186 ($1,qualify($2),$3,$4,$5);
187 $suffix= '' if !defined $suffix;
188 $subfile= '' if !defined $subfile;
189 $suffix= '_db' if !length $suffix && !length $subfile;
190 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
191 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
192 $lprefix= length $prefix; $lsuffix= length $suffix;
193 while (defined($_= readdir D)) {
194 next if m/^\./ && !$lprefix;
195 next unless length > $lprefix+$lsuffix;
196 next unless substr($_,0,$lprefix) eq $prefix;
197 next unless substr($_,length($_)-$lsuffix) eq $suffix;
198 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
199 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
201 next if length $subfile && $! == &ENOENT;
202 cfg_fail("cannot stat zonefile $zf:\n $!");
204 -f _ or cfg_fail("zonefile $zf is not a plain file");
205 zone_conf($z,'primary','p',$mod,$zf);
207 closedir D or cfg_fail("close primary-dir $dir:\n $!");
208 } elsif (m/^primary([\@*?~]*)\s+(\S+)\s+(\S+)$/) {
209 zone_conf($2,'primary','p',$1,qualify($3));
210 } elsif (m/^published([\@*?~]*)\s+(\S+)\s+([0-9.\t]+)$/) {
211 zone_conf($2,'published','s',$1,'',$3);
212 } elsif (m/^stealth([\@*?~]*)\s+(\S+)\s+([0-9. \t]+)$/) {
213 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
214 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
215 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
216 $slave_prefix='' if !defined $slave_prefix;
217 $slave_suffix='' if !defined $slave_suffix;
218 } elsif (m/^output\s+bind8\+(\S+)$/) {
219 cfg_fail("default output may not apply to only some zones")
220 if @zone_cfg_list && length $default_output;
221 set_output(qualify($1));
222 } elsif (m/^include\s+(\S+)$/) {
224 } elsif (m/^admin\s+(\S+)$/) {
226 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
228 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?+)$/) {
229 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
230 $mail_max_warnfreq= $1;
232 cfg_fail("unknown configuration directive".
233 " or incorrect syntax or arguments:\n".
237 $fh->close or cfg_fail("close config file $if:\n $!");
242 $i= "$default_dir$i" unless $i =~ m,^/,;
246 sub zone_conf ($$$$$@) {
247 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
249 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
251 if (!length $output) {
252 $default_output= qualify('chiark-conf-gen.bind8')
253 unless length $default_output;
254 set_output($default_output);
256 cfg_fail("redefined zone $zone\n".
257 " earlier definition $zone_cfg{$zone}{'where'}")
258 if exists $zone_cfg{$zone};
259 $zone_cfg{$zone}{'where'}= $where;
260 $zone_cfg{$zone}{'file'}= $file;
261 $zone_cfg{$zone}{'style_p'}= $style.$mod;
262 $zone_cfg{$zone}{'s'}= $sabbr.$mod; # p)rimary s)econdary u)npub f)oreign
263 $zone_cfg{$zone}{'servers'}= [ @servers ];
265 length $admin_email && length $mail_state_dir or
266 cfg_fail("mailing but failed to specify admin".
267 " or mail-state-dir before zone");
268 $zone_cfg{$zone}{'admin'}= $admin;
269 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
270 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
272 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
273 { no strict 'refs'; $aref= [ @$sfx ]; }
274 @$aref or cfg_fail("failed to specify $sfx before zone")
276 $zone_cfg{$zone}{$sfx}= $aref;
278 $zone_cfg{$zone}{'output'}= $output;
279 push @zone_cfg_list, $zone;
285 $output_contents{$output}= '';
288 #-------------------- mailing
290 use vars qw($m_base $m_lastok @m_ok @m_fail
293 sub mail_zone_before () {
294 $m_base= $$cfg{'maildir'}.'/'.$zone;
300 $m_lock= IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
301 or die "$quis: create lockfile ${m_base}_lock";
302 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
303 <$m_lock> =~ m/^\d+ /;
304 die "$quis: $zone: concurrrency? - flock $&$!\n";
308 (@s1= $m_lock->fstat) or die "$quis: fstat ${m_base}_lock: $!\n";
309 (@s2= stat "${m_base}_lock") or
310 die "$quis: stat ${m_base}_lock: $!\n";
311 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
314 print $m_lock "$$ \n" or $m_lock->flush
315 die "$quis: write pid to ${m_base}_lock: $!\n";
317 if ($m_info= IO::File "${m_base}_info", 'r') {
319 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
320 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
321 die "$quis: ${m_base}_info malformed\n";
323 if ($domail ne 'first') {
324 if ($2 eq ':' && $3 eq ':') {
325 warn "$quis: $zone: mid/last run, but last".
326 "run already done, ignoring zone\n";
329 @m_ok= split /\:/, $2;
330 @m_fail= split /\:/, $3;
332 } elsif ($! != &ENOENT) {
333 die "$quis: open ${m_base}_info: $!\n";
334 } elsif ($domail eq 'first') {
335 warn "$quis: $zone: first run, but not --mail-first,".
339 if ($domail eq 'first') {
340 remove "${m_base}_history" or $!==&ENOENT
341 or die "$quis: remove ${m_base}_history: $!\n";
343 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
344 or die "$quis: open ${m_base}_history: $!\n";
345 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
346 or die "$quis: open ${m_base}_info.tmp: $!\n";
349 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
352 sub mail_zone_after () {
353 if ($zone_warnings{$zone}) {
354 push @m_fail, $m_time;
355 progress(-1,"failed - $zone_warnings{$zone} warnings");
359 progress(-1,"everything is fine");
361 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
362 $progress_fh= $warn_fh= 'STDERR';
364 if ($domail eq 'final') {
365 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_mail + @m_ok)) {
366 printf " %-40s ok\n" or die "$quis: mail ok report: $!\n";
367 } elsif ($$cfg{'s'} =~ m/\@.*\@/) {
368 printf " %-40s mail suppressed\n"
369 or die "$quis: mail suppress report: $!\n";
375 @m_fail= @m_ok= ('','')
376 if $domail eq 'final';
378 printf $m_info "%s %s %s %s \n",
379 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
380 or die "$quis: write new ${m_base}_info: $!\n";
381 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
382 rename "${m_base}_info.tmp", "${m_base}_info"
383 or die "$quis: install new ${m_base}_info: $!\n";
388 sub pmail ($) { print $m_m $_[0] or die "$quis: write ${m_base}_mail: $!\n"; }
389 sub ptime ($) { my ($time)=@_; return gmtime($time)." GMT ($time)"; }
391 sub mail_zone_mail () {
392 my ($log, $zone_to, $zterr, $c, $r);
393 $m_m= new IO::File, "${m_base}_mail", 'w', 0666
394 or die "$quis: create ${m_base}_mail: $!\n";
395 $zone_to=''; $zterr='';
396 if ($$cfg{'s'} !~ m/[\@u]/) {
398 $_= lookup($zone,'soa','0','problem-addr');
399 m/\n\n/ and die "multiple soas\n";
400 m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
401 die "bad soa \`$_'\n";
408 From: zone check system <$$cfg{'admin'}>
409 Subject: $zone - configuration problems report
413 pmail("SOA MNAME for $zone <$zone_to>\nCC: ")
415 pmail($$cfg{'admin'}."\n\n");
417 You are receiving this mail because your email address is listed
418 in the SOA (Start Of Authority) record for $zone
419 in the DNS, which means you are supposedly the DNS administrator
420 responsible for this zone. This report is generated automatically
421 on behalf of $$cfg{'admin'}, who
422 is the administrator for a server for the zone. Please contact
423 them if you have any problem with this report.
428 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
434 The zone has had configuration errors or persistent operational
435 problems during recent checks. See the logs below for details.
437 Check history for $zone:
440 if ($m_lastok ne '-') {
441 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
443 pmail(" No record of this zone ever being fine.\n");
446 pmail(" Errors/warnings at: ".ptime($t)."\n");
449 pmail(" Everything in order at: ".ptime($t)."\n");
452 $log= new IO::File "${m_base}_history",'r'
453 or die "$quis: reopen ${m_base}_history: $!";
457 $log->error && $log->close
458 or die "$quis: reread or close ${m_base}_log: $!";
459 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
460 $m_m= new IO::File "${m_base}_mail"
461 or die "$quis: reopen ${m_base}_mail: $!";
463 defined($c= fork) or die "$quis: fork for mail: $!\n";
465 open STDIN, "<& ${m_m}" or die "$quis - sendmail: dup for stdin: $!\n";
466 exec '/usr/sbin/sendmail','-odq','-oee','-oi',
467 'ijackson@chiark.greenend.org.uk'; # should be -t
468 die "$quis - sendmail: exec: $!\n";
471 $!=0; $r= waitpid $c,0;
472 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
473 $? and warn "$quis: sendmail failed: $?\n";
475 printf " %-40s %s\n", $zone, $zone_to or
476 die "$quis: write mailing report: $!\n";
479 #-------------------- checking
481 use vars qw($zone $cfg $warnings %zone_warnings);
486 return if $verbosity < $minv;
487 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
490 sub verbose ($) { progress(3, ' ' . $_[0]); }
492 sub process_zones (@) {
496 foreach $zone (@zones) {
497 $cfg= $zone_cfg{$zone} || {
498 'style_p' => 'foreign',
503 mail_zone_before() if $domail;
505 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
506 if ($check && ($doall || $cfg->{'s'} !~ m/\?/)) {
508 if ($localonly && $cfg->{'s'} =~ m/f/) {
509 zone_warning("foreign zone specified with -l",'');
510 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
516 zone_warning("checks failed: $@",'') if length $@;
518 $output_contents{$$cfg{'output'}} .= zone_output()
521 mail_zone_after() if $domail;
524 } elsif ($warnings) {
525 printf STDERR ("%s: %d warning(s) in %d zone(s);".
526 " %d zone(s) checked ok.\n",
529 scalar(keys %zone_warnings),
530 scalar(@zones - keys %zone_warnings));
532 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
536 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
537 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
538 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
539 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
540 use vars qw(%addr_is_ok %warned);
541 use vars qw($delg_to_us);
542 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
543 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
545 sub zone_warning ($$) {
549 return 0 if !$repeat && $warned{$w}++;
554 $w .= " ($o)" if length $o;
555 print $warn_fh "$zone: warning: $w\n" or die $!;
557 $zone_warnings{$zone}++;
561 sub zone_warnmore ($) {
562 print $warn_fh "$zone: $_[0]\n" or die $!;
565 sub zone_check_full () {
572 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
574 @to_check= @to_check_soa= ();
577 sub zone_investigate() {
578 my ($super_zone, @start_nsnames, $start_ww,
579 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
580 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
581 $rcode, $name, $is_ns);
583 if ($cfg->{'s'} !~ m/\*/) {
586 debug_trace("zone $zone superzone $super_zone");
588 and die "no superzone ? ($super_zone)\n";
589 $super_zone =~ s/^[^.]+\.//
591 ($rcode,@start_nsnames)=
592 lookup($super_zone,'ns-','06',"superzone search");
595 $start_ww= "server for $super_zone";
597 ($rcode,@start_nsnames)=
598 lookup($zone,'ns-','0',"initial nameserver search");
599 $start_ww= "nameserver for $zone";
601 for $start_ns (@start_nsnames) {
602 $start_ns= lc $start_ns;
603 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
604 foreach $addr (@start_ns_addrs) {
605 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
609 # We do these in order so that we always do NS RRset checks on
610 # nameservers that came from other NS RRsets first; otherwise
611 # we might set nsrrset_checked due to a glueless_ok check,
612 # and then not check for gluefulness later.
613 debug_dump('@to_check @to_check_soa');
614 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
615 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
616 if defined $name_if_auth;
617 next if $nsrrset_checked{$addr}++;
618 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
619 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
620 next if $soa_checked{$addr}++;
621 zone_check_soa($addr,$wa,$name,$is_ns);
628 sub zone_check_nsrrset ($$$$) {
629 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
630 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
633 verbose("checking delegation by $ww");
635 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
636 $s2g{lc $dig_rdata} = [ ];
637 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
638 $wwn= "in glue from $ww";
639 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
640 push @{ $s2g{$dig_owner} }, $dig_rdata;
645 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
647 } elsif (keys %s2g == 1) {
648 zone_warning("only one nameserver ". (join '', keys %s2g),
653 zone_ns_name($s,$ww);
654 @glue= @{ $s2g{$s} };
656 zone_warning("glueless NS $s", $ww)
657 unless $glueless_ok || !$needglue ||
658 grep { has_suffix_of($zone,".$_"); }
659 @{ $cfg->{'conv_glueless'} };
660 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
662 $wwn= "glueless NS from $ww";
663 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
666 $glue= join ' ', sort @glue;
667 push @{ $glue{$s}{$glue} }, $ww;
670 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
671 push @{ $delgs_or_auths->{$s} }, $ww;
674 sub zone_ns_name ($$) {
677 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
678 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
679 zone_warning("nameserver $name in serverless-glueless".
680 " namespace area $cg",
682 if has_suffix_of(".$name",".$cg");
684 zone_warning("published server, as $name, but configured as stealth",
686 if $cfg->{'s'} =~ m/u/ &&
688 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
691 sub zone_server_queue ($$$$$) {
692 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
693 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
694 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
697 sub zone_server_addr ($$$$$) {
698 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
699 debug_trace("zone_server_addr ".join '|',@_);
700 $addr_is_ok{$addr}= "$name ($wwq)"
701 if $is_soa || $cfg->{'s'} =~ m/u/;
702 zone_warning("forbidden nameserver address [$addr] $name",$ww)
703 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
705 my ($name_is_self, $addr_is_self);
706 $name_is_self= grep { $_ eq $name }
707 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
708 $addr_is_self= grep { $_ eq $addr }
709 @{ $cfg->{'self_addr'} };
710 if ($name_is_self && !$addr_is_self) {
711 zone_warning("our $name supplied with wrong address [$addr]", $ww);
713 if (!$name_is_self && $addr_is_self) {
714 zone_warning("we [$addr] are named in ".
715 ($is_soa ? "SOA" : "NS").
716 " by wrong name $name",
719 if (!$name_is_self && !$addr_is_self &&
720 $is_soa && $cfg->{'s'} =~ m/p/) {
721 zone_warning("SOA ORIGIN $name is not us (".
722 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
724 $delg_to_us=1 if $addr_is_self && !$is_soa;
727 sub zone_check_soa ($$$$) {
728 my ($uaddr,$wa,$name,$is_ns) = @_;
729 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
730 verbose("checking service at [$uaddr] $name");
731 $lame= 'dead or lame';
734 if ($dig_type eq 'flags:') {
735 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
736 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
737 die "several SOAs ? $ww" if defined $origin;
739 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
740 ($serial,$origin) = ($1,$2);
744 $lame= 'broken' if !$lame && !defined $origin;
745 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
746 progress(2, sprintf "%-16s %46s has %s%s",
747 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
748 push @{ $soas{$got} }, $ww;
749 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
750 $wwn= "SOA ORIGIN from $ww";
751 foreach $soa_addr (@soa_addrs) {
752 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
756 sub zone_consistency() {
757 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
758 zone_consistency_set('delegations',\%delgs);
759 foreach $d (keys %delgs) { delete $auths{$d}; }
760 zone_consistency_set('zone nameserver rrset',\%auths);
761 foreach $h (keys %glue) {
762 zone_consistency_set("glue for $h", $glue{$h});
764 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
765 $self_soa= $cfg->{'self_soa'};
768 sub zone_servers_ok () {
772 foreach $a (@{ $cfg->{'servers'} }) {
773 next if exists $addr_is_ok{$a};
774 zone_warning("we slave from [$a]",'')
778 foreach $a (keys %addr_is_ok) {
779 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
783 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
784 zone_warning("we are supposedly published secondary,".
785 " but not listed as a nameserver",'');
786 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
787 zone_warnmore("servers are: ". join ' ', sort keys %fs);
791 sub zone_consistency_set ($%) {
794 if (keys(%$set) > 1) {
795 zone_warning("inconsistent $msg:",'');
796 foreach $d (keys %$set) {
797 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
802 sub zone_check_local () {
803 zone_servers_simplefind();
807 sub zone_servers_simplefind () {
808 my ($rcode,@nsnames,$ns,@soas,$origin);
810 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
811 foreach $ns (@nsnames) {
812 zone_ns_name($ns,"NS");
813 zone_server_simple($ns,'NS',0);
815 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
817 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
818 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
819 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
820 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
823 sub zone_server_simple ($$$) {
824 my ($name,$ww,$is_soa) = @_;
825 my ($rcode,@addrs,$addr);
826 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
827 ($is_soa ? "SOA ORIGIN" : "NS"));
828 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
831 #-------------------- outputting
836 $o= "zone \"$zone\" {\n";
837 if ($$cfg{'s'} =~ m/p/) {
838 $o.= " type master;\n";
840 $o.= " type slave;\n".
842 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
845 $o.= " file \"$$cfg{'file'}\";\n";
850 sub output_files () {
851 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
853 foreach $ofn (keys %output_contents) {
854 $fn= $ofn; $mfn= "output file $fn";
857 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
861 $maxmode= (stat _)[2];
864 defined($l= readlink $fn)
865 or die "$quis: readlink $mfn:\n $!\n";
866 $dir= $fn =~ m,^.*/, ? $& : './';
867 $fn= "$dir$l" unless $l =~ m,^/,;
868 $mfn= "output file $fn (symlink target of $ofn)";
870 die "$quis: output file $mfn exists but is not a file".
871 " (or symlink to one)";
874 unlink "$fn.new" or $! == &ENOENT or
875 die "$quis: cannot clear out old .new version of $mfn:\n $!";
876 $h= new IO::File "$fn.new",'w',$maxmode
877 or die("$quis: create .new version of $mfn:\n $!");
879 "# generated by $quis, do not edit\n",
880 $output_contents{$ofn}
881 or die "$quis: write data to .new version of $mfn:\n $!";
883 or die "$quis: close .new version of $mfn:\n $!";
884 push @to_install, $fn,$mfn;
887 while (($fn,$mfn, @to_install) = @to_install) {
889 or die "$quis: install new version of $mfn:\n $!";
893 #-------------------- general utilities
897 return unless $debug>1;
898 local $Data::Dumper::Terse=1;
899 foreach $vn (split /\s+/, $_[0]) {
900 print "$vn := ", eval "Dumper(\\$vn)";
904 sub debug_trace ($) {
905 return unless $debug;
909 sub has_suffix_of ($$) {
910 my ($whole,$suffix) = @_;
911 debug_trace("has_suffix_of $whole $suffix");
912 return 0 if length $whole < length $suffix;
913 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
914 debug_trace("has_suffix_of $whole $suffix YES");
919 my ($domain,$type,$okrcodes,$w) = @_;
921 debug_trace("lookup ==> (->$okrcodes) $domain $type");
924 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
926 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
928 die "$quis: exec adnshost:\n $!\n";
930 @result= $h->getlines();
931 $h->error and die "$quis: read from adnshost:\n $!\n";
934 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
935 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
936 debug_trace("lookup <== $? @result");
941 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
942 # also pseudo-rr with type `flags:'
943 my ($h,$inmid,$irdata,$c,$digwhy);
946 debug_trace("dig ==> \@$qaddr $qowner $qtype");
949 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
951 open STDERR, ">&STDOUT" or die $!;
953 '+nodef','+nosea','+nodebug','+norecurse',
954 "\@$qaddr",'-t',$qtype,$qowner);
955 die "$quis: exec dig:\n $!\n";
959 if (!defined($_= $h->getline())) {
960 $h->error() and die "$quis: read from dig:\n $!\n";
965 s/^\s+/ / or die "$inmid // $_ ?";
969 s/$/ \(/ unless s/\s*\)\s*$//;
971 if (s/\s*\(\s*$//) { $inmid= $_; next; }
972 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
973 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
974 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
975 debug_trace("dig f: $dig_rdata");
979 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
980 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
981 if ($dig_type eq 'a') {
982 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
984 } elsif ($dig_type eq 'ns') {
985 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
986 $dig_rdata= domain_canon($irdata,$digwhy);
987 } elsif ($dig_type eq 'soa') {
988 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
989 or die "bad SOA $irdata ?";
990 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
992 debug_trace("ignoring uknown RR type $dig_type");
995 debug_trace("dig $dig_owner $dig_type $dig_rdata");
998 debug_trace("ignoring unknown dig output $_");
1002 debug_trace("dig <== gave $?");
1005 sub domain_canon ($$) {
1008 return '.' if $i eq '.';
1009 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;