12 $debug $needglue $localonly $repeat $verbosity
13 $progress_fh $warn_fh $modifiers
14 %group2modcmd %group2used);
16 $quis= $0; $quis =~ s,.*/,,;
20 $etcfile= "/etc/bind/chiark-conf-gen.zones";
26 $admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
29 $progress_fh= 'STDOUT';
33 use vars qw($dig_owner $dig_type $dig_rdata);
35 while (@ARGV && $ARGV[0] =~ m/^\-/) {
39 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
40 elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
41 elsif (m/^mail\-(first|middle|final)/) { $mode='n'; $domail=$1; }
42 elsif (m/^all$/) { $doall=1; }
43 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
44 elsif (m/^glueless$/) { $needglue=0; }
45 elsif (m/^localonly$/) { $localonly=1; }
46 elsif (m/^quiet$/) { $verbosity--; }
47 elsif (m/^repeat$/) { $repeat=1; }
48 elsif (m/^verbose$/) { $verbosity++; }
49 else { usageerr("unknown option --$_"); }
54 if (s/^[ynf]//) { $mode=$&; $domail=''; }
55 elsif (s/^A//) { $doall=1; }
56 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
57 elsif (s/^D//) { $debug++; }
58 elsif (s/^g//) { $needglue=0; }
59 elsif (s/^l//) { $localonly=1; }
60 elsif (s/^m(\w+)(\W+)$//) {
63 usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
65 elsif (s/^q//) { $verbosity--; }
66 elsif (s/^r//) { $repeat=1; }
67 elsif (s/^v//) { $verbosity++; }
68 else { usageerr("unknown option -$&"); }
73 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
74 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
76 usageerr("-q may be specified at most twice") if $verbosity<0;
77 usageerr("-v may be specified at most once") if $verbosity>3;
78 usageerr("-D may be specified at most twice") if $debug>2;
79 usageerr("must specify either -f|-y|-n or zones (and not both)")
80 if !!$mode == !!@ARGV;
86 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
88 -f --force install without checking
89 -y --yes check and install
90 -n --no check only (configured zones)
91 --nothing list zones only
92 --mail-* send mail about broken zones (see manpage)
93 <zone> ... check only (specified zones, even unconfigured ones)
95 -A --all report on zones marked ? (ones we know are broken)
96 -D debug $quis (does not help debug your DNS config)
97 -g --glueless do not warn about any glueless referrals (not recommended)
98 -l --localonly full checks only on zones which we primary
99 -q --quiet no output for OK zones
100 -r --repeat repeat warnings for all sources of imperfect data
101 -v --verbose extra verbose info about each zone
102 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
104 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
105 the GNU General Public License, and you are welcome to change it and/or
106 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
110 cfg_fail("config filename $etcfile should not be directory")
111 if $etcfile =~ m,/$,;
113 use vars qw($default_dir);
114 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
116 use vars qw($slave_dir $slave_prefix $slave_suffix);
121 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
122 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
123 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
125 use vars qw(%zone_cfg @zone_cfg_list);
129 use vars qw($output $default_output %output_contents);
132 %output_contents= ();
134 use vars qw($check $install);
135 $check= $mode !~ m/^[fx]/;
136 $install= $mode =~ m/^[yf]/;
138 read_config($etcfile);
139 debug_dump('@zone_cfg_list %zone_cfg');
140 process_zones($mode ? @zone_cfg_list : @ARGV);
141 debug_dump('%output_contents');
142 output_files() if $install;
146 #-------------------- configuration reading
148 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
150 sub read_config ($) {
152 my ($fh,$z,@self,$before,$group,
153 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
156 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
159 if (!defined($_= <$fh>)) {
160 cfg_fail("read config file $if:\n $!") if $fh->error();
164 if (s/\\$//) { $before.= $_; next; }
172 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
173 @self= split /\s+/, $2;
174 @self_ns= @self if $1 ne '-soa';
175 @self_soa= @self if $1 ne '-ns';
176 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
177 @conv_glueless= split /\s+/, $1;
178 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
179 @self_addr= split /\s+/, $1;
180 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
181 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
185 (?: \s+ ([^/ \t]*) (?: (/.+) )?
188 ($mod, $dir, $prefix, $suffix, $subfile) =
189 ($1,qualify($2),$3,$4,$5);
190 cfg_fail("modifiers $mod for directory $dir: $@")
191 if bad_modifiers($mod);
192 $suffix= '' if !defined $suffix;
193 $subfile= '' if !defined $subfile;
194 $suffix= '_db' if !length $suffix && !length $subfile;
195 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
196 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
197 $lprefix= length $prefix; $lsuffix= length $suffix;
198 while (defined($_= readdir D)) {
199 next if m/^\./ && !$lprefix;
200 next unless length > $lprefix+$lsuffix;
201 next unless substr($_,0,$lprefix) eq $prefix;
202 next unless substr($_,length($_)-$lsuffix) eq $suffix;
203 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
204 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
206 next if length $subfile && $! == &ENOENT;
207 cfg_fail("cannot stat zonefile $zf:\n $!");
209 -f _ or cfg_fail("zonefile $zf is not a plain file");
210 zone_conf($z,'primary','p',$mod,$zf);
212 closedir D or cfg_fail("close primary-dir $dir:\n $!");
213 } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
214 zone_conf($2,'primary','p',$1,qualify($3));
215 } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
216 zone_conf($2,'published','s',$1,'',$3);
217 } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
218 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
219 } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
220 ($mod,$group) = ($1,$2);
221 cfg_fail("modifiers $mod for group $group: $@")
222 if bad_modifiers($mod);
223 if (exists $group2modcmd{$group}) {
224 $mod= $group2modcmd{$group};
225 $group2used{$group}++;
228 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
229 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
230 $slave_prefix='' if !defined $slave_prefix;
231 $slave_suffix='' if !defined $slave_suffix;
232 } elsif (m/^output\s+bind8\+(\S+)$/) {
233 cfg_fail("default output may not apply to only some zones")
234 if @zone_cfg_list && length $default_output;
235 set_output(qualify($1));
236 } elsif (m/^include\s+(\S+)$/) {
238 } elsif (m/^admin\s+(\S+)$/) {
240 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
242 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?+)$/) {
243 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
244 $mail_max_warnfreq= $1;
246 cfg_fail("unknown configuration directive".
247 " or incorrect syntax or arguments:\n".
251 foreach $group (keys %group2modcmd) {
252 next if exists $group2used{$group);
253 cfg_fail("command line specifies modifier group $group".
254 " but missing in configuration file");
256 $fh->close or cfg_fail("close config file $if:\n $!");
261 $i= "$default_dir$i" unless $i =~ m,^/,;
265 sub bad_modifiers ($) {
268 die "bad modifier $&" if m/[^!*\$\@~?]/;
269 die "repeated modifier $1" if m/(.).*$1/;
278 sub zone_conf ($$$$$@) {
279 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
281 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
283 if (!length $output) {
284 $default_output= qualify('chiark-conf-gen.bind8')
285 unless length $default_output;
286 set_output($default_output);
288 cfg_fail("redefined zone $zone\n".
289 " earlier definition $zone_cfg{$zone}{'where'}")
290 if exists $zone_cfg{$zone};
291 $zone_cfg{$zone}{'where'}= $where;
292 $zone_cfg{$zone}{'file'}= $file;
293 $zone_cfg{$zone}{'style_p'}= $style.$mod;
294 $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
295 # p)rimary s)econdary u)npub f)oreign
296 # followed by modifiers, first per-zone, then default
297 $zone_cfg{$zone}{'servers'}= [ @servers ];
299 length $admin_email && length $mail_state_dir or
300 cfg_fail("mailing but failed to specify admin".
301 " or mail-state-dir before zone");
302 $zone_cfg{$zone}{'admin'}= $admin;
303 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
304 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
306 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
307 { no strict 'refs'; $aref= [ @$sfx ]; }
308 @$aref or cfg_fail("failed to specify $sfx before zone")
310 $zone_cfg{$zone}{$sfx}= $aref;
312 foreach $sfx (qw(self_soa self_ns)) {
313 $zone_cfg{$zone}{$sfx} =~ s/\*$/$zone/;
315 $zone_cfg{$zone}{'output'}= $output;
316 push @zone_cfg_list, $zone;
322 $output_contents{$output}= '';
325 #-------------------- checking
327 use vars qw($zone $cfg $warnings %zone_warnings);
332 return if $verbosity < $minv;
333 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
336 sub verbose ($) { progress(3, ' ' . $_[0]); }
338 sub process_zones (@) {
342 foreach $zone (@zones) {
343 $cfg= $zone_cfg{$zone} || {
344 'style_p' => 'foreign',
349 mail_zone_before() if $domail;
351 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
352 if ($check && ($doall || !zone_style('?',0)) {
354 if ($localonly && $cfg->{'s'} =~ m/f/) {
355 zone_warning("foreign zone specified with -l",'');
356 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
362 zone_warning("checks failed: $@",'') if length $@;
364 $output_contents{$$cfg{'output'}} .= zone_output()
367 mail_zone_after() if $domail;
370 } elsif ($warnings) {
371 printf STDERR ("%s: %d warning(s) in %d zone(s);".
372 " %d zone(s) checked ok.\n",
375 scalar(keys %zone_warnings),
376 scalar(@zones - keys %zone_warnings));
378 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
382 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
383 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
384 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
385 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
386 use vars qw(%addr_is_ok %warned);
387 use vars qw($delg_to_us);
388 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
389 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
391 sub zone_warning ($$) {
395 return 0 if !$repeat && $warned{$w}++;
400 $w .= " ($o)" if length $o;
401 print $warn_fh "$zone: warning: $w\n" or die $!;
403 $zone_warnings{$zone}++;
407 sub zone_warnmore ($) {
408 print $warn_fh "$zone: $_[0]\n" or die $!;
411 sub zone_check_full () {
418 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
420 @to_check= @to_check_soa= ();
423 sub zone_investigate() {
424 my ($super_zone, @start_nsnames, $start_ww,
425 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
426 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
427 $rcode, $name, $is_ns);
429 if (!zone_style('*',0)) {
432 debug_trace("zone $zone superzone $super_zone");
434 and die "no superzone ? ($super_zone)\n";
435 $super_zone =~ s/^[^.]+\.//
437 ($rcode,@start_nsnames)=
438 lookup($super_zone,'ns-','06',"superzone search");
441 $start_ww= "server for $super_zone";
443 ($rcode,@start_nsnames)=
444 lookup($zone,'ns-','0',"initial nameserver search");
445 $start_ww= "nameserver for $zone";
447 for $start_ns (@start_nsnames) {
448 $start_ns= lc $start_ns;
449 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
450 foreach $addr (@start_ns_addrs) {
451 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
455 # We do these in order so that we always do NS RRset checks on
456 # nameservers that came from other NS RRsets first; otherwise
457 # we might set nsrrset_checked due to a glueless_ok check,
458 # and then not check for gluefulness later.
459 debug_dump('@to_check @to_check_soa');
460 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
461 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
462 if defined $name_if_auth;
463 next if $nsrrset_checked{$addr}++;
464 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
465 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
466 next if $soa_checked{$addr}++;
467 zone_check_soa($addr,$wa,$name,$is_ns);
474 sub zone_check_nsrrset ($$$$) {
475 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
476 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
479 verbose("checking delegation by $ww");
481 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
482 $s2g{lc $dig_rdata} = [ ];
483 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
484 $wwn= "in glue from $ww";
485 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
486 push @{ $s2g{$dig_owner} }, $dig_rdata;
491 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
493 } elsif (keys %s2g == 1) {
494 zone_warning("only one nameserver ". (join '', keys %s2g),
499 zone_ns_name($s,$ww);
500 @glue= @{ $s2g{$s} };
502 zone_warning("glueless NS $s", $ww)
503 unless $glueless_ok || zone_style('~',!$needglue) ||
504 grep { has_suffix_of($zone,".$_"); }
505 @{ $cfg->{'conv_glueless'} };
506 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
508 $wwn= "glueless NS from $ww";
509 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
512 $glue= join ' ', sort @glue;
513 push @{ $glue{$s}{$glue} }, $ww;
516 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
517 push @{ $delgs_or_auths->{$s} }, $ww;
520 sub zone_ns_name ($$) {
523 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
524 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
525 zone_warning("nameserver $name in serverless-glueless".
526 " namespace area $cg",
528 if has_suffix_of(".$name",".$cg");
530 zone_warning("published server, as $name, but configured as stealth",
532 if $cfg->{'s'} =~ m/u/ &&
534 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
537 sub zone_server_queue ($$$$$) {
538 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
539 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
540 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
543 sub zone_server_addr ($$$$$) {
544 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
545 debug_trace("zone_server_addr ".join '|',@_);
546 $addr_is_ok{$addr}= "$name ($wwq)"
547 if $is_soa || $cfg->{'s'} =~ m/u/;
548 zone_warning("forbidden nameserver address [$addr] $name",$ww)
549 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
551 my ($name_is_self, $addr_is_self);
552 $name_is_self= grep { $_ eq $name }
553 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
554 $addr_is_self= grep { $_ eq $addr }
555 @{ $cfg->{'self_addr'} };
556 if ($name_is_self && !$addr_is_self) {
557 zone_warning("our $name supplied with wrong address [$addr]", $ww);
559 if (!$name_is_self && $addr_is_self) {
560 zone_warning("we [$addr] are named in ".
561 ($is_soa ? "SOA" : "NS").
562 " by wrong name $name",
565 if (!$name_is_self && !$addr_is_self &&
566 $is_soa && $cfg->{'s'} =~ m/p/) {
567 zone_warning("SOA ORIGIN $name is not us (".
568 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
570 $delg_to_us=1 if $addr_is_self && !$is_soa;
573 sub zone_check_soa ($$$$) {
574 my ($uaddr,$wa,$name,$is_ns) = @_;
575 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
576 verbose("checking service at [$uaddr] $name");
577 $lame= 'dead or lame';
580 if ($dig_type eq 'flags:') {
581 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
582 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
583 die "several SOAs ? $ww" if defined $origin;
585 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
586 ($serial,$origin) = ($1,$2);
590 $lame= 'broken' if !$lame && !defined $origin;
591 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
592 progress(2, sprintf "%-16s %46s has %s%s",
593 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
594 push @{ $soas{$got} }, $ww;
595 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
596 $wwn= "SOA ORIGIN from $ww";
597 foreach $soa_addr (@soa_addrs) {
598 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
602 sub zone_consistency() {
603 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
604 zone_consistency_set('delegations',\%delgs);
605 foreach $d (keys %delgs) { delete $auths{$d}; }
606 zone_consistency_set('zone nameserver rrset',\%auths);
607 foreach $h (keys %glue) {
608 zone_consistency_set("glue for $h", $glue{$h});
610 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
611 $self_soa= $cfg->{'self_soa'};
614 sub zone_servers_ok () {
618 foreach $a (@{ $cfg->{'servers'} }) {
619 next if exists $addr_is_ok{$a};
620 zone_warning("we slave from [$a]",'')
624 foreach $a (keys %addr_is_ok) {
625 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
629 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
630 zone_warning("we are supposedly published secondary,".
631 " but not listed as a nameserver",'');
632 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
633 zone_warnmore("servers are: ". join ' ', sort keys %fs);
637 sub zone_consistency_set ($%) {
640 if (keys(%$set) > 1) {
641 zone_warning("inconsistent $msg:",'');
642 foreach $d (keys %$set) {
643 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
648 sub zone_check_local () {
649 zone_servers_simplefind();
653 sub zone_servers_simplefind () {
654 my ($rcode,@nsnames,$ns,@soas,$origin);
656 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
657 foreach $ns (@nsnames) {
658 zone_ns_name($ns,"NS");
659 zone_server_simple($ns,'NS',0);
661 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
663 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
664 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
665 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
666 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
669 sub zone_server_simple ($$$) {
670 my ($name,$ww,$is_soa) = @_;
671 my ($rcode,@addrs,$addr);
672 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
673 ($is_soa ? "SOA ORIGIN" : "NS"));
674 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
677 sub zone_style ($$) {
678 my ($stylechar, $default) = @_;
679 local ($_) = $$cfg{'s'};
680 $stylechar =~ s/\W/\\$&/ or die;
681 return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
684 #-------------------- mailing
686 use vars qw($m_base $m_lastok @m_ok @m_fail
689 sub mail_zone_before () {
690 $m_base= $$cfg{'maildir'}.'/'.$zone;
696 $m_lock= IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
697 or die "$quis: create lockfile ${m_base}_lock";
698 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
699 <$m_lock> =~ m/^\d+ /;
700 die "$quis: $zone: concurrrency? - flock $&$!\n";
704 (@s1= $m_lock->fstat) or die "$quis: fstat ${m_base}_lock: $!\n";
705 (@s2= stat "${m_base}_lock") or
706 die "$quis: stat ${m_base}_lock: $!\n";
707 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
710 print $m_lock "$$ \n" or $m_lock->flush
711 die "$quis: write pid to ${m_base}_lock: $!\n";
713 if ($m_info= IO::File "${m_base}_info", 'r') {
715 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
716 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
717 die "$quis: ${m_base}_info malformed\n";
719 if ($domail ne 'first') {
720 if ($2 eq ':' && $3 eq ':') {
721 warn "$quis: $zone: mid/last run, but last".
722 "run already done, ignoring zone\n";
725 @m_ok= split /\:/, $2;
726 @m_fail= split /\:/, $3;
728 } elsif ($! != &ENOENT) {
729 die "$quis: open ${m_base}_info: $!\n";
730 } elsif ($domail eq 'first') {
731 warn "$quis: $zone: first run, but not --mail-first,".
735 if ($domail eq 'first') {
736 remove "${m_base}_history" or $!==&ENOENT
737 or die "$quis: remove ${m_base}_history: $!\n";
739 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
740 or die "$quis: open ${m_base}_history: $!\n";
741 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
742 or die "$quis: open ${m_base}_info.tmp: $!\n";
745 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
748 sub mail_zone_after () {
749 if ($zone_warnings{$zone}) {
750 push @m_fail, $m_time;
751 progress(-1,"failed - $zone_warnings{$zone} warnings");
755 progress(-1,"everything is fine");
757 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
758 $progress_fh= $warn_fh= 'STDERR';
760 if ($domail eq 'final') {
761 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_mail + @m_ok)) {
762 printf " %-40s ok\n" or die "$quis: mail ok report: $!\n";
763 } elsif (zone_style('@',0)) ) {
764 printf " %-40s mail suppressed\n"
765 or die "$quis: mail suppress report: $!\n";
771 @m_fail= @m_ok= ('','')
772 if $domail eq 'final';
774 printf $m_info "%s %s %s %s \n",
775 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
776 or die "$quis: write new ${m_base}_info: $!\n";
777 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
778 rename "${m_base}_info.tmp", "${m_base}_info"
779 or die "$quis: install new ${m_base}_info: $!\n";
784 sub pmail ($) { print $m_m $_[0] or die "$quis: write ${m_base}_mail: $!\n"; }
785 sub ptime ($) { my ($time)=@_; return gmtime($time)." GMT ($time)"; }
787 sub mail_zone_mail () {
788 my ($log, $zone_to, $zterr, $c, $r);
789 $m_m= new IO::File, "${m_base}_mail", 'w', 0666
790 or die "$quis: create ${m_base}_mail: $!\n";
791 $zone_to=''; $zterr='';
792 if (!zone_style("\$",$$cfg{'s'} =~ m/u/)) {
794 $_= lookup($zone,'soa','0','problem-addr');
795 m/\n\n/ and die "multiple soas\n";
796 m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
797 die "bad soa \`$_'\n";
804 From: zone check system <$$cfg{'admin'}>
805 Subject: $zone - configuration problems report
809 pmail("SOA MNAME for $zone <$zone_to>\nCC: ")
811 pmail($$cfg{'admin'}."\n\n");
813 You are receiving this mail because your email address is listed
814 in the SOA (Start Of Authority) record for $zone
815 in the DNS, which means you are supposedly the DNS administrator
816 responsible for this zone. This report is generated automatically
817 on behalf of $$cfg{'admin'}, who
818 is the administrator for a server for the zone. Please contact
819 them if you have any problem with this report.
824 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
830 The zone has had configuration errors or persistent operational
831 problems during recent checks. See the logs below for details.
833 Check history for $zone:
836 if ($m_lastok ne '-') {
837 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
839 pmail(" No record of this zone ever being fine.\n");
842 pmail(" Errors/warnings at: ".ptime($t)."\n");
845 pmail(" Everything in order at: ".ptime($t)."\n");
848 $log= new IO::File "${m_base}_history",'r'
849 or die "$quis: reopen ${m_base}_history: $!";
853 $log->error && $log->close
854 or die "$quis: reread or close ${m_base}_log: $!";
855 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
856 $m_m= new IO::File "${m_base}_mail"
857 or die "$quis: reopen ${m_base}_mail: $!";
859 defined($c= fork) or die "$quis: fork for mail: $!\n";
861 open STDIN, "<& ${m_m}" or die "$quis - sendmail: dup for stdin: $!\n";
862 exec '/usr/sbin/sendmail','-odq','-oee','-oi',
863 'ijackson@chiark.greenend.org.uk'; # should be -t
864 die "$quis - sendmail: exec: $!\n";
867 $!=0; $r= waitpid $c,0;
868 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
869 $? and warn "$quis: sendmail failed: $?\n";
871 printf " %-40s %s\n", $zone, $zone_to or
872 die "$quis: write mailing report: $!\n";
875 #-------------------- outputting
880 $o= "zone \"$zone\" {\n";
881 if ($$cfg{'s'} =~ m/p/) {
882 $o.= " type master;\n";
884 $o.= " type slave;\n".
886 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
889 $o.= " file \"$$cfg{'file'}\";\n";
894 sub output_files () {
895 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
897 foreach $ofn (keys %output_contents) {
898 $fn= $ofn; $mfn= "output file $fn";
901 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
905 $maxmode= (stat _)[2];
908 defined($l= readlink $fn)
909 or die "$quis: readlink $mfn:\n $!\n";
910 $dir= $fn =~ m,^.*/, ? $& : './';
911 $fn= "$dir$l" unless $l =~ m,^/,;
912 $mfn= "output file $fn (symlink target of $ofn)";
914 die "$quis: output file $mfn exists but is not a file".
915 " (or symlink to one)";
918 unlink "$fn.new" or $! == &ENOENT or
919 die "$quis: cannot clear out old .new version of $mfn:\n $!";
920 $h= new IO::File "$fn.new",'w',$maxmode
921 or die("$quis: create .new version of $mfn:\n $!");
923 "# generated by $quis, do not edit\n",
924 $output_contents{$ofn}
925 or die "$quis: write data to .new version of $mfn:\n $!";
927 or die "$quis: close .new version of $mfn:\n $!";
928 push @to_install, $fn,$mfn;
931 while (($fn,$mfn, @to_install) = @to_install) {
933 or die "$quis: install new version of $mfn:\n $!";
937 #-------------------- general utilities
941 return unless $debug>1;
942 local $Data::Dumper::Terse=1;
943 foreach $vn (split /\s+/, $_[0]) {
944 print "$vn := ", eval "Dumper(\\$vn)";
948 sub debug_trace ($) {
949 return unless $debug;
953 sub has_suffix_of ($$) {
954 my ($whole,$suffix) = @_;
955 debug_trace("has_suffix_of $whole $suffix");
956 return 0 if length $whole < length $suffix;
957 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
958 debug_trace("has_suffix_of $whole $suffix YES");
963 my ($domain,$type,$okrcodes,$w) = @_;
965 debug_trace("lookup ==> (->$okrcodes) $domain $type");
968 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
970 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
972 die "$quis: exec adnshost:\n $!\n";
974 @result= $h->getlines();
975 $h->error and die "$quis: read from adnshost:\n $!\n";
978 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
979 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
980 debug_trace("lookup <== $? @result");
985 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
986 # also pseudo-rr with type `flags:'
987 my ($h,$inmid,$irdata,$c,$digwhy);
990 debug_trace("dig ==> \@$qaddr $qowner $qtype");
993 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
995 open STDERR, ">&STDOUT" or die $!;
997 '+nodef','+nosea','+nodebug','+norecurse',
998 "\@$qaddr",'-t',$qtype,$qowner);
999 die "$quis: exec dig:\n $!\n";
1003 if (!defined($_= $h->getline())) {
1004 $h->error() and die "$quis: read from dig:\n $!\n";
1008 if (length $inmid) {
1009 s/^\s+/ / or die "$inmid // $_ ?";
1013 s/$/ \(/ unless s/\s*\)\s*$//;
1015 if (s/\s*\(\s*$//) { $inmid= $_; next; }
1016 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
1017 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
1018 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
1019 debug_trace("dig f: $dig_rdata");
1023 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
1024 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
1025 if ($dig_type eq 'a') {
1026 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
1028 } elsif ($dig_type eq 'ns') {
1029 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
1030 $dig_rdata= domain_canon($irdata,$digwhy);
1031 } elsif ($dig_type eq 'soa') {
1032 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
1033 or die "bad SOA $irdata ?";
1034 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
1036 debug_trace("ignoring uknown RR type $dig_type");
1039 debug_trace("dig $dig_owner $dig_type $dig_rdata");
1042 debug_trace("ignoring unknown dig output $_");
1046 debug_trace("dig <== gave $?");
1049 sub domain_canon ($$) {
1052 return '.' if $i eq '.';
1053 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;