7 use Fcntl qw(:DEFAULT :flock);
9 use vars qw($quis $stdout_fh $stderr_fh
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;
31 $group2modcmd{'foreign'}= '*$!@?';
32 $group2used{'foreign'}= 1;
34 ($progress_fh= $stdout_fh= new_from_fd IO::Handle(1,'w') and
35 $warn_fh= $stderr_fh = new_from_fd IO::Handle(2,'w'))
36 or die "$quis: setup standard filehandles: $!\n";
38 use vars qw($dig_owner $dig_type $dig_rdata);
40 while (@ARGV && $ARGV[0] =~ m/^\-/) {
44 if (m/^(yes|no|force)$/) { m/^./; $mode= $&; $domail=''; }
45 elsif (m/^nothing$/) { $mode= 'x'; $domail=''; }
46 elsif (m/^mail\-(first|middle|final|final\-test)$/) {
50 elsif (m/^all$/) { $doall=1; }
51 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
52 elsif (m/^glueless$/) { $needglue=0; }
53 elsif (m/^localonly$/) { $localonly=1; }
54 elsif (m/^quiet$/) { $verbosity--; }
55 elsif (m/^repeat$/) { $repeat=1; }
56 elsif (m/^verbose$/) { $verbosity++; }
57 else { usageerr("unknown option --$_"); }
62 if (s/^[ynf]//) { $mode=$&; $domail=''; }
63 elsif (s/^A//) { $doall=1; }
64 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
65 elsif (s/^D//) { $debug++; }
66 elsif (s/^g//) { $needglue=0; }
67 elsif (s/^l//) { $localonly=1; }
68 elsif (s/^m(\w+)(\W+)$//) {
71 usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
73 elsif (s/^q//) { $verbosity--; }
74 elsif (s/^r//) { $repeat=1; }
75 elsif (s/^v//) { $verbosity++; }
76 else { usageerr("unknown option -$&"); }
81 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
82 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
84 usageerr("-q may be specified at most twice") if $verbosity<0;
85 usageerr("-v may be specified at most once") if $verbosity>3;
86 usageerr("-D may be specified at most twice") if $debug>2;
87 usageerr("must specify either -f|-y|-n or zones (and not both)")
88 if !!$mode == !!@ARGV && !$domail;
94 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
96 -f --force install without checking
97 -y --yes check and install
98 -n --no check only (configured zones)
99 --nothing list zones only
100 --mail-* send mail about broken zones (see manpage)
101 <zone> ... check only (specified zones, even unconfigured ones)
103 -A --all report on zones marked ? (ones we know are broken)
104 -D debug $quis (does not help debug your DNS config)
105 -g --glueless do not warn about any glueless referrals (not recommended)
106 -l --localonly full checks only on zones which we primary
107 -q --quiet no output for OK zones
108 -r --repeat repeat warnings for all sources of imperfect data
109 -v --verbose extra verbose info about each zone
110 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
112 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
113 the GNU General Public License, and you are welcome to change it and/or
114 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
118 cfg_fail("config filename $etcfile should not be directory")
119 if $etcfile =~ m,/$,;
121 use vars qw($default_dir);
122 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
124 use vars qw($slave_dir $slave_prefix $slave_suffix);
129 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
130 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
131 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
133 use vars qw(%zone_cfg @zone_cfg_list);
137 use vars qw($output $default_output %output_contents);
140 %output_contents= ();
142 use vars qw($check $install);
143 $check= $mode !~ m/^[fx]/;
144 $install= $mode =~ m/^[yf]/;
146 read_config($etcfile);
147 debug_dump('@zone_cfg_list %zone_cfg');
148 process_zones(!@ARGV ? @zone_cfg_list : @ARGV);
149 debug_dump('%output_contents');
150 output_files() if $install;
152 $stdout_fh->close or die "$quis: write messages to stdout: $!\n";
153 $stderr_fh->close or die "$quis: write messages to stderr: $!\n";
156 #-------------------- configuration reading
158 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
160 sub read_config ($) {
162 my ($fh,$z,@self,$before,$group,
163 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
166 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
169 if (!defined($_= <$fh>)) {
170 cfg_fail("read config file $if:\n $!") if $fh->error();
174 if (s/\\$//) { $before.= $_; next; }
182 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
183 @self= split /\s+/, $2;
184 @self_ns= @self if $1 ne '-soa';
185 @self_soa= @self if $1 ne '-ns';
186 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
187 @conv_glueless= split /\s+/, $1;
188 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
189 @self_addr= split /\s+/, $1;
190 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
191 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
195 (?: \s+ ([^/ \t]*) (?: (/.+) )?
198 ($mod, $dir, $prefix, $suffix, $subfile) =
199 ($1,qualify($2),$3,$4,$5);
200 cfg_fail("modifiers $mod for directory $dir: $@")
201 if bad_modifiers($mod);
202 $suffix= '' if !defined $suffix;
203 $subfile= '' if !defined $subfile;
204 $suffix= '_db' if !length $suffix && !length $subfile;
205 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
206 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
207 $lprefix= length $prefix; $lsuffix= length $suffix;
208 while (defined($_= readdir D)) {
209 next if m/^\./ && !$lprefix;
210 next unless length > $lprefix+$lsuffix;
211 next unless substr($_,0,$lprefix) eq $prefix;
212 next unless substr($_,length($_)-$lsuffix) eq $suffix;
213 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
214 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
216 next if length $subfile && $! == &ENOENT;
217 cfg_fail("cannot stat zonefile $zf:\n $!");
219 -f _ or cfg_fail("zonefile $zf is not a plain file");
220 zone_conf($z,'primary','p',$mod,$zf);
222 closedir D or cfg_fail("close primary-dir $dir:\n $!");
223 } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
224 zone_conf($2,'primary','p',$1,qualify($3));
225 } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
226 zone_conf($2,'published','s',$1,'',$3);
227 } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
228 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
229 } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
230 ($mod,$group) = ($1,$2);
231 cfg_fail("modifiers $mod for group $group: $@")
232 if bad_modifiers($mod);
233 if (exists $group2modcmd{$group}) {
234 $mod= $group2modcmd{$group};
235 $group2used{$group}++;
238 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
239 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
240 $slave_prefix='' if !defined $slave_prefix;
241 $slave_suffix='' if !defined $slave_suffix;
242 } elsif (m/^output\s+bind8\+(\S+)$/) {
243 cfg_fail("default output may not apply to only some zones")
244 if @zone_cfg_list && length $default_output;
245 set_output(qualify($1));
246 } elsif (m/^include\s+(\S+)$/) {
248 } elsif (m/^admin\s+(\S+)$/) {
250 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
252 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?)$/) {
253 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
254 $mail_max_warnfreq= $1;
256 cfg_fail("unknown configuration directive".
257 " or incorrect syntax or arguments:\n".
261 foreach $group (keys %group2modcmd) {
262 next if exists $group2used{$group};
263 cfg_fail("command line specifies modifier group $group".
264 " but missing in configuration file");
266 $fh->close or cfg_fail("close config file $if:\n $!");
271 $i= "$default_dir$i" unless $i =~ m,^/,;
275 sub bad_modifiers ($) {
278 die "bad modifier $&" if m/[^!*\$\@~?]/;
279 die "repeated modifier $1" if m/(.).*\1/;
288 sub zone_conf ($$$$$@) {
289 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
291 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
293 if (!length $output) {
294 $default_output= qualify('chiark-conf-gen.bind8')
295 unless length $default_output;
296 set_output($default_output);
298 cfg_fail("redefined zone $zone\n".
299 " earlier definition $zone_cfg{$zone}{'where'}")
300 if exists $zone_cfg{$zone};
301 $zone_cfg{$zone}{'where'}= $where;
302 $zone_cfg{$zone}{'file'}= $file;
303 $zone_cfg{$zone}{'style_p'}= $style.$mod;
304 $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
305 # p)rimary s)econdary u)npub f)oreign
306 # followed by modifiers, first per-zone, then default
307 $zone_cfg{$zone}{'servers'}= [ @servers ];
309 length $admin && length $mail_state_dir or
310 cfg_fail("mailing but failed to specify admin".
311 " or mail-state-dir before zone");
312 $zone_cfg{$zone}{'admin'}= $admin;
313 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
314 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
316 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
317 { no strict 'refs'; $aref= [ @$sfx ]; }
318 @$aref or cfg_fail("failed to specify $sfx before zone")
320 $zone_cfg{$zone}{$sfx}= $aref;
322 foreach $sfx (qw(self_soa self_ns)) {
323 map { s/\*$/$zone/ } @{ $zone_cfg{$zone}{$sfx} };
325 $zone_cfg{$zone}{'output'}= $output;
326 push @zone_cfg_list, $zone;
332 $output_contents{$output}= '';
335 #-------------------- checking
337 use vars qw($zone $cfg $warnings %zone_warnings);
342 return if $verbosity < $minv;
343 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
346 sub verbose ($) { progress(3, ' ' . $_[0]); }
348 sub process_zones (@) {
352 foreach $zone (@zones) {
353 $cfg= $zone_cfg{$zone} || {
354 'style_p' => 'foreign',
355 's' => "f $group2modcmd{'foreign'}",
359 mail_zone_before() or next
362 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
363 if ($check && ($doall || !zone_style('?',0))) {
365 if ($localonly && $cfg->{'s'} =~ m/f/) {
366 zone_warning("foreign zone specified with -l",'');
367 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
373 zone_warning("checks failed: $@",'') if length $@;
375 $output_contents{$$cfg{'output'}} .= zone_output()
378 mail_zone_after() if $domail;
381 } elsif ($warnings) {
382 printf STDERR ("%s: %d warning(s) in %d zone(s);".
383 " %d zone(s) checked ok.\n",
386 scalar(keys %zone_warnings),
387 scalar(@zones - keys %zone_warnings));
389 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
393 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
394 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
395 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
396 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
397 use vars qw(%addr_is_ok %warned);
398 use vars qw($delg_to_us);
399 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
400 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
402 sub zone_warning ($$) {
406 return 0 if !$repeat && $warned{$w}++;
411 $w .= " ($o)" if length $o;
412 print $warn_fh "$zone: warning: $w\n" or die $!;
414 $zone_warnings{$zone}++;
418 sub zone_warnmore ($) {
419 print $warn_fh "$zone: $_[0]\n" or die $!;
422 sub zone_check_full () {
429 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
431 @to_check= @to_check_soa= ();
434 sub zone_investigate() {
435 my ($super_zone, @start_nsnames, $start_ww,
436 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
437 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
438 $rcode, $name, $is_ns);
440 if (!zone_style('*',0)) {
443 debug_trace("zone $zone superzone $super_zone");
445 and die "no superzone ? ($super_zone)\n";
446 $super_zone =~ s/^[^.]+\.//
448 ($rcode,@start_nsnames)=
449 lookup($super_zone,'ns-','06',"superzone search");
452 $start_ww= "server for $super_zone";
454 ($rcode,@start_nsnames)=
455 lookup($zone,'ns-','0',"initial nameserver search");
456 $start_ww= "nameserver for $zone";
458 for $start_ns (@start_nsnames) {
459 $start_ns= lc $start_ns;
460 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
461 foreach $addr (@start_ns_addrs) {
462 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
466 # We do these in order so that we always do NS RRset checks on
467 # nameservers that came from other NS RRsets first; otherwise
468 # we might set nsrrset_checked due to a glueless_ok check,
469 # and then not check for gluefulness later.
470 debug_dump('@to_check @to_check_soa');
471 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
472 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
473 if defined $name_if_auth;
474 next if $nsrrset_checked{$addr}++;
475 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
476 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
477 next if $soa_checked{$addr}++;
478 zone_check_soa($addr,$wa,$name,$is_ns);
485 sub zone_check_nsrrset ($$$$) {
486 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
487 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
490 verbose("checking delegation by $ww");
492 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
493 $s2g{lc $dig_rdata} = [ ];
494 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
495 $wwn= "in glue from $ww";
496 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
497 push @{ $s2g{$dig_owner} }, $dig_rdata;
502 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
504 } elsif (keys %s2g == 1) {
505 zone_warning("only one nameserver ". (join '', keys %s2g),
510 zone_ns_name($s,$ww);
511 @glue= @{ $s2g{$s} };
513 zone_warning("glueless NS $s", $ww)
514 unless $glueless_ok || zone_style('~',!$needglue) ||
515 grep { has_suffix_of($zone,".$_"); }
516 @{ $cfg->{'conv_glueless'} };
517 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
519 $wwn= "glueless NS from $ww";
520 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
523 $glue= join ' ', sort @glue;
524 push @{ $glue{$s}{$glue} }, $ww;
527 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
528 push @{ $delgs_or_auths->{$s} }, $ww;
531 sub zone_ns_name ($$) {
534 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
535 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
536 zone_warning("nameserver $name in serverless-glueless".
537 " namespace area $cg",
539 if has_suffix_of(".$name",".$cg");
541 zone_warning("published server, as $name, but configured as stealth",
543 if $cfg->{'s'} =~ m/u/ &&
545 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
548 sub zone_server_queue ($$$$$) {
549 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
550 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
551 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
554 sub zone_server_addr ($$$$$) {
555 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
556 debug_trace("zone_server_addr ".join '|',@_);
557 $addr_is_ok{$addr}= "$name ($wwq)"
558 if $is_soa || $cfg->{'s'} =~ m/u/;
559 zone_warning("forbidden nameserver address [$addr] $name",$ww)
560 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
562 my ($name_is_self, $addr_is_self);
563 $name_is_self= grep { $_ eq $name }
564 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
565 $addr_is_self= grep { $_ eq $addr }
566 @{ $cfg->{'self_addr'} };
567 if ($name_is_self && !$addr_is_self) {
568 zone_warning("our $name supplied with wrong address [$addr]", $ww);
570 if (!$name_is_self && $addr_is_self) {
571 zone_warning("we [$addr] are named in ".
572 ($is_soa ? "SOA" : "NS").
573 " by wrong name $name",
576 if (!$name_is_self && !$addr_is_self &&
577 $is_soa && $cfg->{'s'} =~ m/p/) {
578 zone_warning("SOA ORIGIN $name is not us (".
579 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
581 $delg_to_us=1 if $addr_is_self && !$is_soa;
584 sub zone_check_soa ($$$$) {
585 my ($uaddr,$wa,$name,$is_ns) = @_;
586 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
587 verbose("checking service at [$uaddr] $name");
588 $lame= 'dead or lame';
591 if ($dig_type eq 'flags:') {
592 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
593 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
594 die "several SOAs ? $ww" if defined $origin;
596 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
597 ($serial,$origin) = ($1,$2);
601 $lame= 'broken' if !$lame && !defined $origin;
602 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
603 progress(2, sprintf "%-16s %46s has %s%s",
604 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
605 push @{ $soas{$got} }, $ww;
606 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
607 $wwn= "SOA ORIGIN from $ww";
608 foreach $soa_addr (@soa_addrs) {
609 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
613 sub zone_consistency() {
614 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
615 zone_consistency_set('delegations',\%delgs);
616 foreach $d (keys %delgs) { delete $auths{$d}; }
617 zone_consistency_set('zone nameserver rrset',\%auths);
618 foreach $h (keys %glue) {
619 zone_consistency_set("glue for $h", $glue{$h});
621 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
622 $self_soa= $cfg->{'self_soa'};
625 sub zone_servers_ok () {
629 foreach $a (@{ $cfg->{'servers'} }) {
630 next if exists $addr_is_ok{$a};
631 zone_warning("we slave from [$a]",'')
635 foreach $a (keys %addr_is_ok) {
636 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
640 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
641 zone_warning("we are supposedly published secondary,".
642 " but not listed as a nameserver",'');
643 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
644 zone_warnmore("servers are: ". join ' ', sort keys %fs);
648 sub zone_consistency_set ($%) {
651 if (keys(%$set) > 1) {
652 zone_warning("inconsistent $msg:",'');
653 foreach $d (keys %$set) {
654 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
659 sub zone_check_local () {
660 zone_servers_simplefind();
664 sub zone_servers_simplefind () {
665 my ($rcode,@nsnames,$ns,@soas,$origin);
667 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
668 foreach $ns (@nsnames) {
669 zone_ns_name($ns,"NS");
670 zone_server_simple($ns,'NS',0);
672 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
674 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
675 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
676 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
677 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
680 sub zone_server_simple ($$$) {
681 my ($name,$ww,$is_soa) = @_;
682 my ($rcode,@addrs,$addr);
683 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
684 ($is_soa ? "SOA ORIGIN" : "NS"));
685 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
688 sub zone_style ($$) {
689 my ($stylechar, $default) = @_;
690 local ($_) = $$cfg{'s'};
691 $stylechar =~ s/\W/\\$&/ or die;
692 return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
695 #-------------------- mailing
697 use vars qw($m_base $m_lastok @m_ok @m_fail
698 $m_info $m_time $m_lock $m_m);
700 sub mail_zone_before () {
703 $m_base= $$cfg{'maildir'}.'/'.$zone;
709 $m_lock= new IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
710 or die "$quis: create lockfile ${m_base}_lock: $!\n";
711 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
712 <$m_lock> =~ m/^\d+ /;
713 die "$quis: $zone: concurrrency? - flock $&$!\n";
717 (@s1= $m_lock->stat) or die "$quis: fstat ${m_base}_lock: $!\n";
718 (@s2= stat "${m_base}_lock") or
719 die "$quis: stat ${m_base}_lock: $!\n";
720 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
723 (print $m_lock "$$ \n" and $m_lock->flush)
724 or die "$quis: write pid to ${m_base}_lock: $!\n";
726 if ($m_info= new IO::File "${m_base}_info", 'r') {
728 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
729 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
730 die "$quis: ${m_base}_info malformed\n";
732 if ($domail ne 'first') {
733 if ($2 eq ':' && $3 eq ':') {
734 warn "$quis: $zone: mid/last run, but last".
735 "run already done, ignoring zone\n";
738 @m_ok= split /\:/, $2;
739 @m_fail= split /\:/, $3;
741 } elsif ($! != &ENOENT) {
742 die "$quis: open ${m_base}_info: $!\n";
743 } elsif ($domail ne 'first') {
744 warn "$quis: $zone: first run, but not --mail-first,".
748 if ($domail eq 'first') {
749 remove "${m_base}_history" or $!==&ENOENT
750 or die "$quis: remove ${m_base}_history: $!\n";
752 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
753 or die "$quis: open ${m_base}_history: $!\n";
754 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
755 or die "$quis: open ${m_base}_info.tmp: $!\n";
758 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
762 sub mail_zone_after () {
763 if ($zone_warnings{$zone}) {
764 push @m_fail, $m_time;
765 progress(-1,"failed - $zone_warnings{$zone} warnings");
769 progress(-1,"everything is fine");
771 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
772 $progress_fh= $warn_fh= $stderr_fh;
774 if ($domail =~ m/^final/) {
775 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_fail + @m_ok)) {
776 printf " %-40s ok\n", $zone or die "$quis: mail ok report: $!\n";
777 } elsif (zone_style('@',0)) {
778 printf " %-40s mail suppressed\n", $zone
779 or die "$quis: mail suppress report: $!\n";
784 printf " %-40s %d warns. OK %s Fail %s\n",
786 defined $zone_warnings{$zone} ? $zone_warnings{$zone} : 0,
787 join(',', map { $_ - $m_time } @m_ok),
788 join(',', map { $_ - $m_time } @m_fail)
789 or die "$quis: checking progress report: $!\n";
792 @m_fail= @m_ok= ('','')
793 if $domail =~ m/^final/;
795 printf $m_info "%s %s %s %s \n",
796 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
797 or die "$quis: write new ${m_base}_info: $!\n";
798 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
799 rename "${m_base}_info.tmp", "${m_base}_info"
800 or die "$quis: install new ${m_base}_info: $!\n";
807 or die "$quis: write ${m_base}_mail: $!\n";
811 return gmtime($time)." GMT ($time)";
814 sub mail_zone_mail () {
815 my ($log, $zone_to, $zterr, $c, $r, $t, @soas);
816 $m_m= new IO::File "${m_base}_mail", 'w', 0666
817 or die "$quis: create ${m_base}_mail: $!\n";
818 $zone_to=''; $zterr='';
819 if (!zone_style("\$", $$cfg{'s'} !~ m/[ps]/)) {
821 ($r,@soas)= lookup($zone,'soa','0','problem-addr');
822 @soas==1 or die "multiple soas\n";
823 $soas[0] =~ m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
824 die "bad soa \`$_'\n";
831 From: zone checker <$$cfg{'admin'}>
832 Subject: $zone - configuration problems report
836 pmail("(testing!) ") if $domail ne 'final';
837 pmail("SOA MNAME for $zone <$zone_to>\nCC: ") if length($zone_to);
838 pmail($$cfg{'admin'}."\n\n");
840 You are receiving this mail because your email address is listed
841 in the SOA (Start Of Authority) record for $zone
842 in the DNS, which means you are supposedly the DNS administrator
843 responsible for this zone. This report is generated automatically
844 on behalf of $$cfg{'admin'}, who
845 is the administrator for a server for the zone. Please contact
846 them if you have any problem with this report.
851 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
857 The zone has had configuration errors or persistent operational
858 problems during recent checks. See the logs below for details.
860 Recent check history for $zone:
863 if ($m_lastok ne '-') {
864 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
866 pmail(" No record of this zone ever being fine.\n");
869 pmail(" Zone had problems at: ".ptime($t)."\n");
872 pmail(" Everything in order at: ".ptime($t)."\n");
875 $log= new IO::File "${m_base}_history",'r'
876 or die "$quis: reopen ${m_base}_history: $!";
878 pmail($log->getline);
880 (!$log->error and $log->close)
881 or die "$quis: reread or close ${m_base}_log: $!\n";
883 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
884 $m_m= new IO::File "${m_base}_mail"
885 or die "$quis: reopen ${m_base}_mail: $!";
887 defined($c= fork) or die "$quis: fork for mail: $!\n";
889 defined dup2($m_m->fileno, 0)
890 or die "$quis - sendmail: dup for stdin: $!\n";
891 exec (qw(/usr/sbin/sendmail -odb -oee -oi),
892 ($domail eq 'final' ? '-t' : $$cfg{'admin'}));
893 die "$quis - sendmail: exec: $!\n";
896 $!=0; $r= waitpid $c,0;
897 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
898 $? and warn "$quis: sendmail failed: $?\n";
900 printf " %-40s %s\n", $zone,
901 length $zone_to ? $zone_to : 'reporting to admin'
902 or die "$quis: write mailing report: $!\n";
905 #-------------------- outputting
910 $o= "zone \"$zone\" {\n";
911 if ($$cfg{'s'} =~ m/p/) {
912 $o.= " type master;\n";
914 $o.= " type slave;\n".
916 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
919 $o.= " file \"$$cfg{'file'}\";\n";
924 sub output_files () {
925 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
927 foreach $ofn (keys %output_contents) {
928 $fn= $ofn; $mfn= "output file $fn";
931 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
935 $maxmode= (stat _)[2];
938 defined($l= readlink $fn)
939 or die "$quis: readlink $mfn:\n $!\n";
940 $dir= $fn =~ m,^.*/, ? $& : './';
941 $fn= "$dir$l" unless $l =~ m,^/,;
942 $mfn= "output file $fn (symlink target of $ofn)";
944 die "$quis: output file $mfn exists but is not a file".
945 " (or symlink to one)";
948 unlink "$fn.new" or $! == &ENOENT or
949 die "$quis: cannot clear out old .new version of $mfn:\n $!";
950 $h= new IO::File "$fn.new",'w',$maxmode
951 or die("$quis: create .new version of $mfn:\n $!");
953 "# generated by $quis, do not edit\n",
954 $output_contents{$ofn}
955 or die "$quis: write data to .new version of $mfn:\n $!";
957 or die "$quis: close .new version of $mfn:\n $!";
958 push @to_install, $fn,$mfn;
961 while (($fn,$mfn, @to_install) = @to_install) {
963 or die "$quis: install new version of $mfn:\n $!";
967 #-------------------- general utilities
971 return unless $debug>1;
972 local $Data::Dumper::Terse=1;
973 foreach $vn (split /\s+/, $_[0]) {
974 print "$vn := ", eval "Dumper(\\$vn)";
978 sub debug_trace ($) {
979 return unless $debug;
983 sub has_suffix_of ($$) {
984 my ($whole,$suffix) = @_;
985 debug_trace("has_suffix_of $whole $suffix");
986 return 0 if length $whole < length $suffix;
987 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
988 debug_trace("has_suffix_of $whole $suffix YES");
993 my ($domain,$type,$okrcodes,$w) = @_;
995 debug_trace("lookup ==> (->$okrcodes) $domain $type");
998 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
1000 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
1002 die "$quis: exec adnshost:\n $!\n";
1004 @result= $h->getlines();
1005 $h->error and die "$quis: read from adnshost:\n $!\n";
1008 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
1009 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
1010 debug_trace("lookup <== $? @result");
1011 return ($?,@result);
1015 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
1016 # also pseudo-rr with type `flags:'
1017 my ($h,$inmid,$irdata,$c,$digwhy);
1020 debug_trace("dig ==> \@$qaddr $qowner $qtype");
1023 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
1025 open STDERR, ">&STDOUT" or die $!;
1027 '+nodef','+nosea','+nodebug','+norecurse',
1028 "\@$qaddr",'-t',$qtype,$qowner);
1029 die "$quis: exec dig:\n $!\n";
1033 if (!defined($_= $h->getline())) {
1034 $h->error() and die "$quis: read from dig:\n $!\n";
1038 if (length $inmid) {
1039 s/^\s+/ / or die "$inmid // $_ ?";
1043 s/$/ \(/ unless s/\s*\)\s*$//;
1045 if (s/\s*\(\s*$//) { $inmid= $_; next; }
1046 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
1047 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
1048 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
1049 debug_trace("dig f: $dig_rdata");
1053 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
1054 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
1055 if ($dig_type eq 'a') {
1056 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
1058 } elsif ($dig_type eq 'ns') {
1059 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
1060 $dig_rdata= domain_canon($irdata,$digwhy);
1061 } elsif ($dig_type eq 'soa') {
1062 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
1063 or die "bad SOA $irdata ?";
1064 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
1066 debug_trace("ignoring uknown RR type $dig_type");
1069 debug_trace("dig $dig_owner $dig_type $dig_rdata");
1072 debug_trace("ignoring unknown dig output $_");
1076 debug_trace("dig <== gave $?");
1079 sub domain_canon ($$) {
1082 return '.' if $i eq '.';
1083 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;