7 use Fcntl qw(:DEFAULT :flock);
12 $debug $needglue $localonly $repeat $verbosity
13 $admin $mail_state_dir $mail_max_warnfreq
14 $progress_fh $warn_fh $modifiers
15 %group2modcmd %group2used);
17 $quis= $0; $quis =~ s,.*/,,;
21 $etcfile= "/etc/bind/chiark-conf-gen.zones";
27 $admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
30 $progress_fh= 'STDOUT';
34 use vars qw($dig_owner $dig_type $dig_rdata);
36 while (@ARGV && $ARGV[0] =~ m/^\-/) {
40 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
41 elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
42 elsif (m/^mail\-(first|middle|final|final-test)/) {
46 elsif (m/^all$/) { $doall=1; }
47 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
48 elsif (m/^glueless$/) { $needglue=0; }
49 elsif (m/^localonly$/) { $localonly=1; }
50 elsif (m/^quiet$/) { $verbosity--; }
51 elsif (m/^repeat$/) { $repeat=1; }
52 elsif (m/^verbose$/) { $verbosity++; }
53 else { usageerr("unknown option --$_"); }
58 if (s/^[ynf]//) { $mode=$&; $domail=''; }
59 elsif (s/^A//) { $doall=1; }
60 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
61 elsif (s/^D//) { $debug++; }
62 elsif (s/^g//) { $needglue=0; }
63 elsif (s/^l//) { $localonly=1; }
64 elsif (s/^m(\w+)(\W+)$//) {
67 usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
69 elsif (s/^q//) { $verbosity--; }
70 elsif (s/^r//) { $repeat=1; }
71 elsif (s/^v//) { $verbosity++; }
72 else { usageerr("unknown option -$&"); }
77 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
78 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
80 usageerr("-q may be specified at most twice") if $verbosity<0;
81 usageerr("-v may be specified at most once") if $verbosity>3;
82 usageerr("-D may be specified at most twice") if $debug>2;
83 usageerr("must specify either -f|-y|-n or zones (and not both)")
84 if !!$mode == !!@ARGV;
90 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
92 -f --force install without checking
93 -y --yes check and install
94 -n --no check only (configured zones)
95 --nothing list zones only
96 --mail-* send mail about broken zones (see manpage)
97 <zone> ... check only (specified zones, even unconfigured ones)
99 -A --all report on zones marked ? (ones we know are broken)
100 -D debug $quis (does not help debug your DNS config)
101 -g --glueless do not warn about any glueless referrals (not recommended)
102 -l --localonly full checks only on zones which we primary
103 -q --quiet no output for OK zones
104 -r --repeat repeat warnings for all sources of imperfect data
105 -v --verbose extra verbose info about each zone
106 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
108 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
109 the GNU General Public License, and you are welcome to change it and/or
110 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
114 cfg_fail("config filename $etcfile should not be directory")
115 if $etcfile =~ m,/$,;
117 use vars qw($default_dir);
118 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
120 use vars qw($slave_dir $slave_prefix $slave_suffix);
125 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
126 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
127 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
129 use vars qw(%zone_cfg @zone_cfg_list);
133 use vars qw($output $default_output %output_contents);
136 %output_contents= ();
138 use vars qw($check $install);
139 $check= $mode !~ m/^[fx]/;
140 $install= $mode =~ m/^[yf]/;
142 read_config($etcfile);
143 debug_dump('@zone_cfg_list %zone_cfg');
144 process_zones($mode ? @zone_cfg_list : @ARGV);
145 debug_dump('%output_contents');
146 output_files() if $install;
150 #-------------------- configuration reading
152 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
154 sub read_config ($) {
156 my ($fh,$z,@self,$before,$group,
157 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
160 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
163 if (!defined($_= <$fh>)) {
164 cfg_fail("read config file $if:\n $!") if $fh->error();
168 if (s/\\$//) { $before.= $_; next; }
176 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
177 @self= split /\s+/, $2;
178 @self_ns= @self if $1 ne '-soa';
179 @self_soa= @self if $1 ne '-ns';
180 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
181 @conv_glueless= split /\s+/, $1;
182 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
183 @self_addr= split /\s+/, $1;
184 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
185 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
189 (?: \s+ ([^/ \t]*) (?: (/.+) )?
192 ($mod, $dir, $prefix, $suffix, $subfile) =
193 ($1,qualify($2),$3,$4,$5);
194 cfg_fail("modifiers $mod for directory $dir: $@")
195 if bad_modifiers($mod);
196 $suffix= '' if !defined $suffix;
197 $subfile= '' if !defined $subfile;
198 $suffix= '_db' if !length $suffix && !length $subfile;
199 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
200 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
201 $lprefix= length $prefix; $lsuffix= length $suffix;
202 while (defined($_= readdir D)) {
203 next if m/^\./ && !$lprefix;
204 next unless length > $lprefix+$lsuffix;
205 next unless substr($_,0,$lprefix) eq $prefix;
206 next unless substr($_,length($_)-$lsuffix) eq $suffix;
207 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
208 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
210 next if length $subfile && $! == &ENOENT;
211 cfg_fail("cannot stat zonefile $zf:\n $!");
213 -f _ or cfg_fail("zonefile $zf is not a plain file");
214 zone_conf($z,'primary','p',$mod,$zf);
216 closedir D or cfg_fail("close primary-dir $dir:\n $!");
217 } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
218 zone_conf($2,'primary','p',$1,qualify($3));
219 } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
220 zone_conf($2,'published','s',$1,'',$3);
221 } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
222 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
223 } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
224 ($mod,$group) = ($1,$2);
225 cfg_fail("modifiers $mod for group $group: $@")
226 if bad_modifiers($mod);
227 if (exists $group2modcmd{$group}) {
228 $mod= $group2modcmd{$group};
229 $group2used{$group}++;
232 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
233 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
234 $slave_prefix='' if !defined $slave_prefix;
235 $slave_suffix='' if !defined $slave_suffix;
236 } elsif (m/^output\s+bind8\+(\S+)$/) {
237 cfg_fail("default output may not apply to only some zones")
238 if @zone_cfg_list && length $default_output;
239 set_output(qualify($1));
240 } elsif (m/^include\s+(\S+)$/) {
242 } elsif (m/^admin\s+(\S+)$/) {
244 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
246 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?)$/) {
247 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
248 $mail_max_warnfreq= $1;
250 cfg_fail("unknown configuration directive".
251 " or incorrect syntax or arguments:\n".
255 foreach $group (keys %group2modcmd) {
256 next if exists $group2used{$group};
257 cfg_fail("command line specifies modifier group $group".
258 " but missing in configuration file");
260 $fh->close or cfg_fail("close config file $if:\n $!");
265 $i= "$default_dir$i" unless $i =~ m,^/,;
269 sub bad_modifiers ($) {
272 die "bad modifier $&" if m/[^!*\$\@~?]/;
273 die "repeated modifier $1" if m/(.).*$1/;
282 sub zone_conf ($$$$$@) {
283 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
285 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
287 if (!length $output) {
288 $default_output= qualify('chiark-conf-gen.bind8')
289 unless length $default_output;
290 set_output($default_output);
292 cfg_fail("redefined zone $zone\n".
293 " earlier definition $zone_cfg{$zone}{'where'}")
294 if exists $zone_cfg{$zone};
295 $zone_cfg{$zone}{'where'}= $where;
296 $zone_cfg{$zone}{'file'}= $file;
297 $zone_cfg{$zone}{'style_p'}= $style.$mod;
298 $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
299 # p)rimary s)econdary u)npub f)oreign
300 # followed by modifiers, first per-zone, then default
301 $zone_cfg{$zone}{'servers'}= [ @servers ];
303 length $admin && length $mail_state_dir or
304 cfg_fail("mailing but failed to specify admin".
305 " or mail-state-dir before zone");
306 $zone_cfg{$zone}{'admin'}= $admin;
307 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
308 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
310 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
311 { no strict 'refs'; $aref= [ @$sfx ]; }
312 @$aref or cfg_fail("failed to specify $sfx before zone")
314 $zone_cfg{$zone}{$sfx}= $aref;
316 foreach $sfx (qw(self_soa self_ns)) {
317 $zone_cfg{$zone}{$sfx} =~ s/\*$/$zone/;
319 $zone_cfg{$zone}{'output'}= $output;
320 push @zone_cfg_list, $zone;
326 $output_contents{$output}= '';
329 #-------------------- checking
331 use vars qw($zone $cfg $warnings %zone_warnings);
336 return if $verbosity < $minv;
337 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
340 sub verbose ($) { progress(3, ' ' . $_[0]); }
342 sub process_zones (@) {
346 foreach $zone (@zones) {
347 $cfg= $zone_cfg{$zone} || {
348 'style_p' => 'foreign',
353 mail_zone_before() if $domail;
355 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
356 if ($check && ($doall || !zone_style('?',0))) {
358 if ($localonly && $cfg->{'s'} =~ m/f/) {
359 zone_warning("foreign zone specified with -l",'');
360 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
366 zone_warning("checks failed: $@",'') if length $@;
368 $output_contents{$$cfg{'output'}} .= zone_output()
371 mail_zone_after() if $domail;
374 } elsif ($warnings) {
375 printf STDERR ("%s: %d warning(s) in %d zone(s);".
376 " %d zone(s) checked ok.\n",
379 scalar(keys %zone_warnings),
380 scalar(@zones - keys %zone_warnings));
382 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
386 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
387 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
388 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
389 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
390 use vars qw(%addr_is_ok %warned);
391 use vars qw($delg_to_us);
392 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
393 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
395 sub zone_warning ($$) {
399 return 0 if !$repeat && $warned{$w}++;
404 $w .= " ($o)" if length $o;
405 print $warn_fh "$zone: warning: $w\n" or die $!;
407 $zone_warnings{$zone}++;
411 sub zone_warnmore ($) {
412 print $warn_fh "$zone: $_[0]\n" or die $!;
415 sub zone_check_full () {
422 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
424 @to_check= @to_check_soa= ();
427 sub zone_investigate() {
428 my ($super_zone, @start_nsnames, $start_ww,
429 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
430 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
431 $rcode, $name, $is_ns);
433 if (!zone_style('*',0)) {
436 debug_trace("zone $zone superzone $super_zone");
438 and die "no superzone ? ($super_zone)\n";
439 $super_zone =~ s/^[^.]+\.//
441 ($rcode,@start_nsnames)=
442 lookup($super_zone,'ns-','06',"superzone search");
445 $start_ww= "server for $super_zone";
447 ($rcode,@start_nsnames)=
448 lookup($zone,'ns-','0',"initial nameserver search");
449 $start_ww= "nameserver for $zone";
451 for $start_ns (@start_nsnames) {
452 $start_ns= lc $start_ns;
453 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
454 foreach $addr (@start_ns_addrs) {
455 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
459 # We do these in order so that we always do NS RRset checks on
460 # nameservers that came from other NS RRsets first; otherwise
461 # we might set nsrrset_checked due to a glueless_ok check,
462 # and then not check for gluefulness later.
463 debug_dump('@to_check @to_check_soa');
464 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
465 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
466 if defined $name_if_auth;
467 next if $nsrrset_checked{$addr}++;
468 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
469 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
470 next if $soa_checked{$addr}++;
471 zone_check_soa($addr,$wa,$name,$is_ns);
478 sub zone_check_nsrrset ($$$$) {
479 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
480 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
483 verbose("checking delegation by $ww");
485 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
486 $s2g{lc $dig_rdata} = [ ];
487 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
488 $wwn= "in glue from $ww";
489 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
490 push @{ $s2g{$dig_owner} }, $dig_rdata;
495 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
497 } elsif (keys %s2g == 1) {
498 zone_warning("only one nameserver ". (join '', keys %s2g),
503 zone_ns_name($s,$ww);
504 @glue= @{ $s2g{$s} };
506 zone_warning("glueless NS $s", $ww)
507 unless $glueless_ok || zone_style('~',!$needglue) ||
508 grep { has_suffix_of($zone,".$_"); }
509 @{ $cfg->{'conv_glueless'} };
510 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
512 $wwn= "glueless NS from $ww";
513 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
516 $glue= join ' ', sort @glue;
517 push @{ $glue{$s}{$glue} }, $ww;
520 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
521 push @{ $delgs_or_auths->{$s} }, $ww;
524 sub zone_ns_name ($$) {
527 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
528 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
529 zone_warning("nameserver $name in serverless-glueless".
530 " namespace area $cg",
532 if has_suffix_of(".$name",".$cg");
534 zone_warning("published server, as $name, but configured as stealth",
536 if $cfg->{'s'} =~ m/u/ &&
538 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
541 sub zone_server_queue ($$$$$) {
542 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
543 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
544 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
547 sub zone_server_addr ($$$$$) {
548 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
549 debug_trace("zone_server_addr ".join '|',@_);
550 $addr_is_ok{$addr}= "$name ($wwq)"
551 if $is_soa || $cfg->{'s'} =~ m/u/;
552 zone_warning("forbidden nameserver address [$addr] $name",$ww)
553 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
555 my ($name_is_self, $addr_is_self);
556 $name_is_self= grep { $_ eq $name }
557 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
558 $addr_is_self= grep { $_ eq $addr }
559 @{ $cfg->{'self_addr'} };
560 if ($name_is_self && !$addr_is_self) {
561 zone_warning("our $name supplied with wrong address [$addr]", $ww);
563 if (!$name_is_self && $addr_is_self) {
564 zone_warning("we [$addr] are named in ".
565 ($is_soa ? "SOA" : "NS").
566 " by wrong name $name",
569 if (!$name_is_self && !$addr_is_self &&
570 $is_soa && $cfg->{'s'} =~ m/p/) {
571 zone_warning("SOA ORIGIN $name is not us (".
572 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
574 $delg_to_us=1 if $addr_is_self && !$is_soa;
577 sub zone_check_soa ($$$$) {
578 my ($uaddr,$wa,$name,$is_ns) = @_;
579 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
580 verbose("checking service at [$uaddr] $name");
581 $lame= 'dead or lame';
584 if ($dig_type eq 'flags:') {
585 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
586 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
587 die "several SOAs ? $ww" if defined $origin;
589 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
590 ($serial,$origin) = ($1,$2);
594 $lame= 'broken' if !$lame && !defined $origin;
595 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
596 progress(2, sprintf "%-16s %46s has %s%s",
597 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
598 push @{ $soas{$got} }, $ww;
599 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
600 $wwn= "SOA ORIGIN from $ww";
601 foreach $soa_addr (@soa_addrs) {
602 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
606 sub zone_consistency() {
607 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
608 zone_consistency_set('delegations',\%delgs);
609 foreach $d (keys %delgs) { delete $auths{$d}; }
610 zone_consistency_set('zone nameserver rrset',\%auths);
611 foreach $h (keys %glue) {
612 zone_consistency_set("glue for $h", $glue{$h});
614 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
615 $self_soa= $cfg->{'self_soa'};
618 sub zone_servers_ok () {
622 foreach $a (@{ $cfg->{'servers'} }) {
623 next if exists $addr_is_ok{$a};
624 zone_warning("we slave from [$a]",'')
628 foreach $a (keys %addr_is_ok) {
629 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
633 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
634 zone_warning("we are supposedly published secondary,".
635 " but not listed as a nameserver",'');
636 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
637 zone_warnmore("servers are: ". join ' ', sort keys %fs);
641 sub zone_consistency_set ($%) {
644 if (keys(%$set) > 1) {
645 zone_warning("inconsistent $msg:",'');
646 foreach $d (keys %$set) {
647 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
652 sub zone_check_local () {
653 zone_servers_simplefind();
657 sub zone_servers_simplefind () {
658 my ($rcode,@nsnames,$ns,@soas,$origin);
660 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
661 foreach $ns (@nsnames) {
662 zone_ns_name($ns,"NS");
663 zone_server_simple($ns,'NS',0);
665 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
667 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
668 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
669 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
670 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
673 sub zone_server_simple ($$$) {
674 my ($name,$ww,$is_soa) = @_;
675 my ($rcode,@addrs,$addr);
676 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
677 ($is_soa ? "SOA ORIGIN" : "NS"));
678 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
681 sub zone_style ($$) {
682 my ($stylechar, $default) = @_;
683 local ($_) = $$cfg{'s'};
684 $stylechar =~ s/\W/\\$&/ or die;
685 return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
688 #-------------------- mailing
690 use vars qw($m_base $m_lastok @m_ok @m_fail
691 $m_info $m_time $m_lock $m_m);
693 sub mail_zone_before () {
696 $m_base= $$cfg{'maildir'}.'/'.$zone;
702 $m_lock= new IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
703 or die "$quis: create lockfile ${m_base}_lock";
704 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
705 <$m_lock> =~ m/^\d+ /;
706 die "$quis: $zone: concurrrency? - flock $&$!\n";
710 (@s1= $m_lock->fstat) or die "$quis: fstat ${m_base}_lock: $!\n";
711 (@s2= stat "${m_base}_lock") or
712 die "$quis: stat ${m_base}_lock: $!\n";
713 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
716 (print $m_lock "$$ \n" and $m_lock->flush)
717 or die "$quis: write pid to ${m_base}_lock: $!\n";
719 if ($m_info= new IO::File "${m_base}_info", 'r') {
721 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
722 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
723 die "$quis: ${m_base}_info malformed\n";
725 if ($domail ne 'first') {
726 if ($2 eq ':' && $3 eq ':') {
727 warn "$quis: $zone: mid/last run, but last".
728 "run already done, ignoring zone\n";
731 @m_ok= split /\:/, $2;
732 @m_fail= split /\:/, $3;
734 } elsif ($! != &ENOENT) {
735 die "$quis: open ${m_base}_info: $!\n";
736 } elsif ($domail eq 'first') {
737 warn "$quis: $zone: first run, but not --mail-first,".
741 if ($domail eq 'first') {
742 remove "${m_base}_history" or $!==&ENOENT
743 or die "$quis: remove ${m_base}_history: $!\n";
745 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
746 or die "$quis: open ${m_base}_history: $!\n";
747 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
748 or die "$quis: open ${m_base}_info.tmp: $!\n";
751 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
754 sub mail_zone_after () {
755 if ($zone_warnings{$zone}) {
756 push @m_fail, $m_time;
757 progress(-1,"failed - $zone_warnings{$zone} warnings");
761 progress(-1,"everything is fine");
763 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
764 $progress_fh= $warn_fh= 'STDERR';
766 if ($domail =~ m/^final/) {
767 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_fail + @m_ok)) {
768 printf " %-40s ok\n" or die "$quis: mail ok report: $!\n";
769 } elsif (zone_style('@',0)) {
770 printf " %-40s mail suppressed\n"
771 or die "$quis: mail suppress report: $!\n";
777 @m_fail= @m_ok= ('','')
778 if $domail =~ m/^final/;
780 printf $m_info "%s %s %s %s \n",
781 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
782 or die "$quis: write new ${m_base}_info: $!\n";
783 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
784 rename "${m_base}_info.tmp", "${m_base}_info"
785 or die "$quis: install new ${m_base}_info: $!\n";
792 or die "$quis: write ${m_base}_mail: $!\n";
796 return gmtime($time)." GMT ($time)";
799 sub mail_zone_mail () {
800 my ($log, $zone_to, $zterr, $c, $r, $t);
801 $m_m= new IO::File "${m_base}_mail", 'w', 0666
802 or die "$quis: create ${m_base}_mail: $!\n";
803 $zone_to=''; $zterr='';
804 if (!zone_style("\$",$$cfg{'s'} =~ m/u/)) {
806 $_= lookup($zone,'soa','0','problem-addr');
807 m/\n\n/ and die "multiple soas\n";
808 m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
809 die "bad soa \`$_'\n";
816 From: zone check system <$$cfg{'admin'}>
817 Subject: $zone - configuration problems report
821 pmail("(testing!) ") if $domail ne 'final';
822 pmail("SOA MNAME for $zone <$zone_to>\nCC: ") if length($zone_to);
823 pmail($$cfg{'admin'}."\n\n");
825 You are receiving this mail because your email address is listed
826 in the SOA (Start Of Authority) record for $zone
827 in the DNS, which means you are supposedly the DNS administrator
828 responsible for this zone. This report is generated automatically
829 on behalf of $$cfg{'admin'}, who
830 is the administrator for a server for the zone. Please contact
831 them if you have any problem with this report.
836 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
842 The zone has had configuration errors or persistent operational
843 problems during recent checks. See the logs below for details.
845 Check history for $zone:
848 if ($m_lastok ne '-') {
849 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
851 pmail(" No record of this zone ever being fine.\n");
854 pmail(" Errors/warnings at: ".ptime($t)."\n");
857 pmail(" Everything in order at: ".ptime($t)."\n");
860 $log= new IO::File "${m_base}_history",'r'
861 or die "$quis: reopen ${m_base}_history: $!";
865 $log->error && $log->close
866 or die "$quis: reread or close ${m_base}_log: $!";
867 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
868 $m_m= new IO::File "${m_base}_mail"
869 or die "$quis: reopen ${m_base}_mail: $!";
871 defined($c= fork) or die "$quis: fork for mail: $!\n";
873 open STDIN, "<& ${m_m}" or die "$quis - sendmail: dup for stdin: $!\n";
874 exec (qw(/usr/sbin/sendmail -odq -oee -oi),
875 ($domail eq 'final' ? '-t' : $$cfg{'admin'}));
876 die "$quis - sendmail: exec: $!\n";
879 $!=0; $r= waitpid $c,0;
880 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
881 $? and warn "$quis: sendmail failed: $?\n";
883 printf " %-40s %s\n", $zone, $zone_to or
884 die "$quis: write mailing report: $!\n";
887 #-------------------- outputting
892 $o= "zone \"$zone\" {\n";
893 if ($$cfg{'s'} =~ m/p/) {
894 $o.= " type master;\n";
896 $o.= " type slave;\n".
898 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
901 $o.= " file \"$$cfg{'file'}\";\n";
906 sub output_files () {
907 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
909 foreach $ofn (keys %output_contents) {
910 $fn= $ofn; $mfn= "output file $fn";
913 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
917 $maxmode= (stat _)[2];
920 defined($l= readlink $fn)
921 or die "$quis: readlink $mfn:\n $!\n";
922 $dir= $fn =~ m,^.*/, ? $& : './';
923 $fn= "$dir$l" unless $l =~ m,^/,;
924 $mfn= "output file $fn (symlink target of $ofn)";
926 die "$quis: output file $mfn exists but is not a file".
927 " (or symlink to one)";
930 unlink "$fn.new" or $! == &ENOENT or
931 die "$quis: cannot clear out old .new version of $mfn:\n $!";
932 $h= new IO::File "$fn.new",'w',$maxmode
933 or die("$quis: create .new version of $mfn:\n $!");
935 "# generated by $quis, do not edit\n",
936 $output_contents{$ofn}
937 or die "$quis: write data to .new version of $mfn:\n $!";
939 or die "$quis: close .new version of $mfn:\n $!";
940 push @to_install, $fn,$mfn;
943 while (($fn,$mfn, @to_install) = @to_install) {
945 or die "$quis: install new version of $mfn:\n $!";
949 #-------------------- general utilities
953 return unless $debug>1;
954 local $Data::Dumper::Terse=1;
955 foreach $vn (split /\s+/, $_[0]) {
956 print "$vn := ", eval "Dumper(\\$vn)";
960 sub debug_trace ($) {
961 return unless $debug;
965 sub has_suffix_of ($$) {
966 my ($whole,$suffix) = @_;
967 debug_trace("has_suffix_of $whole $suffix");
968 return 0 if length $whole < length $suffix;
969 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
970 debug_trace("has_suffix_of $whole $suffix YES");
975 my ($domain,$type,$okrcodes,$w) = @_;
977 debug_trace("lookup ==> (->$okrcodes) $domain $type");
980 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
982 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
984 die "$quis: exec adnshost:\n $!\n";
986 @result= $h->getlines();
987 $h->error and die "$quis: read from adnshost:\n $!\n";
990 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
991 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
992 debug_trace("lookup <== $? @result");
997 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
998 # also pseudo-rr with type `flags:'
999 my ($h,$inmid,$irdata,$c,$digwhy);
1002 debug_trace("dig ==> \@$qaddr $qowner $qtype");
1005 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
1007 open STDERR, ">&STDOUT" or die $!;
1009 '+nodef','+nosea','+nodebug','+norecurse',
1010 "\@$qaddr",'-t',$qtype,$qowner);
1011 die "$quis: exec dig:\n $!\n";
1015 if (!defined($_= $h->getline())) {
1016 $h->error() and die "$quis: read from dig:\n $!\n";
1020 if (length $inmid) {
1021 s/^\s+/ / or die "$inmid // $_ ?";
1025 s/$/ \(/ unless s/\s*\)\s*$//;
1027 if (s/\s*\(\s*$//) { $inmid= $_; next; }
1028 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
1029 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
1030 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
1031 debug_trace("dig f: $dig_rdata");
1035 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
1036 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
1037 if ($dig_type eq 'a') {
1038 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
1040 } elsif ($dig_type eq 'ns') {
1041 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
1042 $dig_rdata= domain_canon($irdata,$digwhy);
1043 } elsif ($dig_type eq 'soa') {
1044 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
1045 or die "bad SOA $irdata ?";
1046 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
1048 debug_trace("ignoring uknown RR type $dig_type");
1051 debug_trace("dig $dig_owner $dig_type $dig_rdata");
1054 debug_trace("ignoring unknown dig output $_");
1058 debug_trace("dig <== gave $?");
1061 sub domain_canon ($$) {
1064 return '.' if $i eq '.';
1065 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;