1 fixme implement .* on self-soa self-ns
14 $debug $needglue $localonly $repeat $verbosity
15 $progress_fh $warn_fh $modifiers
16 %group2modcmd %group2used);
18 $quis= $0; $quis =~ s,.*/,,;
22 $etcfile= "/etc/bind/chiark-conf-gen.zones";
28 $admin=''; $mail_state_dir=''; $mail_max_warnfreq= 50;
31 $progress_fh= 'STDOUT';
35 use vars qw($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//) { $localonly=1; }
62 elsif (s/^m(\w+)(\W+)$//) {
65 usageerr("modifiers $m for group $g: $@") if bad_modifiers($m);
67 elsif (s/^q//) { $verbosity--; }
68 elsif (s/^r//) { $repeat=1; }
69 elsif (s/^v//) { $verbosity++; }
70 else { usageerr("unknown option -$&"); }
75 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
76 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
78 usageerr("-q may be specified at most twice") if $verbosity<0;
79 usageerr("-v may be specified at most once") if $verbosity>3;
80 usageerr("-D may be specified at most twice") if $debug>2;
81 usageerr("must specify either -f|-y|-n or zones (and not both)")
82 if !!$mode == !!@ARGV;
88 usage: chiark-named-conf [options] -f|-y|-n|<zone>...
90 -f --force install without checking
91 -y --yes check and install
92 -n --no check only (configured zones)
93 --nothing list zones only
94 --mail-* send mail about broken zones (see manpage)
95 <zone> ... check only (specified zones, even unconfigured ones)
97 -A --all report on zones marked ? (ones we know are broken)
98 -D debug $quis (does not help debug your DNS config)
99 -g --glueless do not warn about any glueless referrals (not recommended)
100 -l --localonly full checks only on zones which we primary
101 -q --quiet no output for OK zones
102 -r --repeat repeat warnings for all sources of imperfect data
103 -v --verbose extra verbose info about each zone
104 -C|--config <DIR/FILE use FILE as default config and DIR as default dir
106 chiark-named-conf is Copyright 2002 Ian Jackson. It is Free software, under
107 the GNU General Public License, and you are welcome to change it and/or
108 distribute copies under certain conditions. There is ABSOLUTELY NO WARRANTY.
112 cfg_fail("config filename $etcfile should not be directory")
113 if $etcfile =~ m,/$,;
115 use vars qw($default_dir);
116 $default_dir= $etcfile =~ m,^.*/, ? $& : './';
118 use vars qw($slave_dir $slave_prefix $slave_suffix);
123 use vars qw(@self_ns @self_soa @self_addr @forbid_addr @conv_glueless);
124 @self_ns= @self_soa= @self_addr= @forbid_addr= ();
125 @conv_glueless= qw(in-addr.arpa ip6.arpa ip6.int);
127 use vars qw(%zone_cfg @zone_cfg_list);
131 use vars qw($output $default_output %output_contents);
134 %output_contents= ();
136 use vars qw($check $install);
137 $check= $mode !~ m/^[fx]/;
138 $install= $mode =~ m/^[yf]/;
140 read_config($etcfile);
141 debug_dump('@zone_cfg_list %zone_cfg');
142 process_zones($mode ? @zone_cfg_list : @ARGV);
143 debug_dump('%output_contents');
144 output_files() if $install;
148 #-------------------- configuration reading
150 sub cfg_fail ($) { die "$quis: $where:\n $_[0]\n"; }
152 sub read_config ($) {
154 my ($fh,$z,@self,$before,$group,
155 $mod,$dir,$prefix,$suffix,$subfile,$lprefix,$lsuffix,$zf);
158 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
161 if (!defined($_= <$fh>)) {
162 cfg_fail("read config file $if:\n $!") if $fh->error();
166 if (s/\\$//) { $before.= $_; next; }
174 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
175 @self= split /\s+/, $2;
176 @self_ns= @self if $1 ne '-soa';
177 @self_soa= @self if $1 ne '-ns';
178 } elsif (m/^serverless\-glueless\s+(\S.*\S)/) {
179 @conv_glueless= split /\s+/, $1;
180 } elsif (m/^self\-addr\s+([0-9. \t]+)/) {
181 @self_addr= split /\s+/, $1;
182 } elsif (m/^forbid\-addr(?:\s+([0-9. \t]+))?/) {
183 @forbid_addr= defined $1 ? split /\s+/, $1 : ();
187 (?: \s+ ([^/ \t]*) (?: (/.+) )?
190 ($mod, $dir, $prefix, $suffix, $subfile) =
191 ($1,qualify($2),$3,$4,$5);
192 cfg_fail("modifiers $mod for directory $dir: $@")
193 if bad_modifiers($mod);
194 $suffix= '' if !defined $suffix;
195 $subfile= '' if !defined $subfile;
196 $suffix= '_db' if !length $suffix && !length $subfile;
197 if (-d "$dir/$prefix") { $dir.='/'; $dir.=$prefix; $prefix=''; }
198 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
199 $lprefix= length $prefix; $lsuffix= length $suffix;
200 while (defined($_= readdir D)) {
201 next if m/^\./ && !$lprefix;
202 next unless length > $lprefix+$lsuffix;
203 next unless substr($_,0,$lprefix) eq $prefix;
204 next unless substr($_,length($_)-$lsuffix) eq $suffix;
205 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
206 $zf= $dir.'/'.$prefix.$z.$suffix.$subfile;
208 next if length $subfile && $! == &ENOENT;
209 cfg_fail("cannot stat zonefile $zf:\n $!");
211 -f _ or cfg_fail("zonefile $zf is not a plain file");
212 zone_conf($z,'primary','p',$mod,$zf);
214 closedir D or cfg_fail("close primary-dir $dir:\n $!");
215 } elsif (m/^primary(\W*)\s+(\S+)\s+(\S+)$/) {
216 zone_conf($2,'primary','p',$1,qualify($3));
217 } elsif (m/^published(\W*)\s+(\S+)\s+([0-9.\t]+)$/) {
218 zone_conf($2,'published','s',$1,'',$3);
219 } elsif (m/^stealth(\W*)\s+(\S+)\s+([0-9. \t]+)$/) {
220 zone_conf($2,'stealth','u',$1,'',split /\s+/, $3);
221 } elsif (m/^modifiers\s+(\W+)(?:\s+(\w+))$/) {
222 ($mod,$group) = ($1,$2);
223 cfg_fail("modifiers $mod for group $group: $@")
224 if bad_modifiers($mod);
225 if (exists $group2modcmd{$group}) {
226 $mod= $group2modcmd{$group};
227 $group2used{$group}++;
230 } elsif (m/^slave\-dir\s+(\S+)(?:(?:\s+(\S+))\s+(\S+))?$/) {
231 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
232 $slave_prefix='' if !defined $slave_prefix;
233 $slave_suffix='' if !defined $slave_suffix;
234 } elsif (m/^output\s+bind8\+(\S+)$/) {
235 cfg_fail("default output may not apply to only some zones")
236 if @zone_cfg_list && length $default_output;
237 set_output(qualify($1));
238 } elsif (m/^include\s+(\S+)$/) {
240 } elsif (m/^admin\s+(\S+)$/) {
242 } elsif (m/^mail\-state\-dir\s+(\S+)$/) {
244 } elsif (m/^mail\-max\-warnfreq\s+(\d{1,3}(?:\.\d{0,5})?+)$/) {
245 cfg_fail("mail-max-warnfreq must be <=100") if $1>100;
246 $mail_max_warnfreq= $1;
248 cfg_fail("unknown configuration directive".
249 " or incorrect syntax or arguments:\n".
253 foreach $group (keys %group2modcmd) {
254 next if exists $group2used{$group);
255 cfg_fail("command line specifies modifier group $group".
256 " but missing in configuration file");
258 $fh->close or cfg_fail("close config file $if:\n $!");
263 $i= "$default_dir$i" unless $i =~ m,^/,;
267 sub bad_modifiers ($) {
270 die "bad modifier $&" if m/[^!*\$\@~?]/;
271 die "repeated modifier $1" if m/(.).*$1/;
280 sub zone_conf ($$$$$@) {
281 my ($zone,$style,$sabbr,$mod,$file,@servers) = @_;
283 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
285 if (!length $output) {
286 $default_output= qualify('chiark-conf-gen.bind8')
287 unless length $default_output;
288 set_output($default_output);
290 cfg_fail("redefined zone $zone\n".
291 " earlier definition $zone_cfg{$zone}{'where'}")
292 if exists $zone_cfg{$zone};
293 $zone_cfg{$zone}{'where'}= $where;
294 $zone_cfg{$zone}{'file'}= $file;
295 $zone_cfg{$zone}{'style_p'}= $style.$mod;
296 $zone_cfg{$zone}{'s'}= "$sabbr $mod $modifiers";
297 # p)rimary s)econdary u)npub f)oreign
298 # followed by modifiers, first per-zone, then default
299 $zone_cfg{$zone}{'servers'}= [ @servers ];
301 length $admin_email && length $mail_state_dir or
302 cfg_fail("mailing but failed to specify admin".
303 " or mail-state-dir before zone");
304 $zone_cfg{$zone}{'admin'}= $admin;
305 $zone_cfg{$zone}{'maildir'}= qualify($mail_state_dir);
306 $zone_cfg{$zone}{'mailmwarn'}= $mail_max_warnfreq;
308 foreach $sfx (qw(self_soa self_ns self_addr forbid_addr conv_glueless)) {
309 { no strict 'refs'; $aref= [ @$sfx ]; }
310 @$aref or cfg_fail("failed to specify $sfx before zone")
312 $zone_cfg{$zone}{$sfx}= $aref;
314 $zone_cfg{$zone}{'output'}= $output;
315 push @zone_cfg_list, $zone;
321 $output_contents{$output}= '';
324 #-------------------- checking
326 use vars qw($zone $cfg $warnings %zone_warnings);
331 return if $verbosity < $minv;
332 print $progress_fh "$m\n" or die "$quis: $zone: write log: $!\n";
335 sub verbose ($) { progress(3, ' ' . $_[0]); }
337 sub process_zones (@) {
341 foreach $zone (@zones) {
342 $cfg= $zone_cfg{$zone} || {
343 'style_p' => 'foreign',
348 mail_zone_before() if $domail;
350 progress(1, sprintf "%-20s %s", $zone, $$cfg{'style_p'});
351 if ($check && ($doall || !zone_style('?',0)) {
353 if ($localonly && $cfg->{'s'} =~ m/f/) {
354 zone_warning("foreign zone specified with -l",'');
355 } elsif ($localonly && $cfg->{'s'} !~ m/p/) {
361 zone_warning("checks failed: $@",'') if length $@;
363 $output_contents{$$cfg{'output'}} .= zone_output()
366 mail_zone_after() if $domail;
369 } elsif ($warnings) {
370 printf STDERR ("%s: %d warning(s) in %d zone(s);".
371 " %d zone(s) checked ok.\n",
374 scalar(keys %zone_warnings),
375 scalar(@zones - keys %zone_warnings));
377 progress(1, sprintf "%d zone(s) checked ok", scalar @zones);
381 use vars qw(%delgs); # $delgs{$nameserver_list} = [ $whosaidandwhy ]
382 use vars qw(%auths); # $auths{$nameserver_list} = [ $whosaidandwhy ]
383 use vars qw(%glue); # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
384 use vars qw(%soas); # $soa{"$serial $origin"} = [ $whosaidandwhy ]
385 use vars qw(%addr_is_ok %warned);
386 use vars qw($delg_to_us);
387 use vars qw(@to_check); # ($addr,$whyask,$name_if_auth,$glueless_ok, ...)
388 use vars qw(@to_check_soa); # ($addr,$whyask,$name,$is_ns, ...)
390 sub zone_warning ($$) {
394 return 0 if !$repeat && $warned{$w}++;
399 $w .= " ($o)" if length $o;
400 print $warn_fh "$zone: warning: $w\n" or die $!;
402 $zone_warnings{$zone}++;
406 sub zone_warnmore ($) {
407 print $warn_fh "$zone: $_[0]\n" or die $!;
410 sub zone_check_full () {
417 %delgs= %auths= %glue= %soas= %warned= %addr_is_ok= ();
419 @to_check= @to_check_soa= ();
422 sub zone_investigate() {
423 my ($super_zone, @start_nsnames, $start_ww,
424 $start_ns, @start_ns_addrs, $s, $wa, $name_if_auth,
425 %nsrrset_checked, %soa_checked, $addr, $glueless_ok,
426 $rcode, $name, $is_ns);
428 if (!zone_style('*',0)) {
431 debug_trace("zone $zone superzone $super_zone");
433 and die "no superzone ? ($super_zone)\n";
434 $super_zone =~ s/^[^.]+\.//
436 ($rcode,@start_nsnames)=
437 lookup($super_zone,'ns-','06',"superzone search");
440 $start_ww= "server for $super_zone";
442 ($rcode,@start_nsnames)=
443 lookup($zone,'ns-','0',"initial nameserver search");
444 $start_ww= "nameserver for $zone";
446 for $start_ns (@start_nsnames) {
447 $start_ns= lc $start_ns;
448 ($rcode,@start_ns_addrs)= lookup($start_ns,'a','0',"$start_ww");
449 foreach $addr (@start_ns_addrs) {
450 push @to_check, $addr, "$start_ns, $start_ww", undef, 0;
454 # We do these in order so that we always do NS RRset checks on
455 # nameservers that came from other NS RRsets first; otherwise
456 # we might set nsrrset_checked due to a glueless_ok check,
457 # and then not check for gluefulness later.
458 debug_dump('@to_check @to_check_soa');
459 if (($addr,$wa,$name_if_auth,$glueless_ok,@to_check) = @to_check) {
460 push @to_check_soa, $addr, $wa, $name_if_auth, 1,
461 if defined $name_if_auth;
462 next if $nsrrset_checked{$addr}++;
463 zone_check_nsrrset($addr, $wa, $name_if_auth, $glueless_ok);
464 } elsif (($addr,$wa,$name,$is_ns,@to_check_soa) = @to_check_soa) {
465 next if $soa_checked{$addr}++;
466 zone_check_soa($addr,$wa,$name,$is_ns);
473 sub zone_check_nsrrset ($$$$) {
474 my ($uaddr,$wa, $name_if_auth, $glueless_ok) = @_;
475 my (@s, $s, $a, %s2g, @glue, $glue, $delgs_or_auths, $wwn, $ww);
478 verbose("checking delegation by $ww");
480 if ($dig_type eq 'ns' && $dig_owner eq $zone) {
481 $s2g{lc $dig_rdata} = [ ];
482 } elsif ($dig_type eq 'a' && exists $s2g{$dig_owner}) {
483 $wwn= "in glue from $ww";
484 zone_server_queue($dig_rdata,$dig_owner,$wwn,"NS [$uaddr]",0);
485 push @{ $s2g{$dig_owner} }, $dig_rdata;
490 zone_warning("unable to find NS RRset at [$uaddr]", $wa);
492 } elsif (keys %s2g == 1) {
493 zone_warning("only one nameserver ". (join '', keys %s2g),
498 zone_ns_name($s,$ww);
499 @glue= @{ $s2g{$s} };
501 zone_warning("glueless NS $s", $ww)
502 unless $glueless_ok || zone_style('~',!$needglue) ||
503 grep { has_suffix_of($zone,".$_"); }
504 @{ $cfg->{'conv_glueless'} };
505 ($rcode,@glue)= lookup($s,'a','0',"glueless NS from $ww");
507 $wwn= "glueless NS from $ww";
508 zone_server_queue($a,$s,$wwn,"NS [$uaddr]",0);
511 $glue= join ' ', sort @glue;
512 push @{ $glue{$s}{$glue} }, $ww;
515 $delgs_or_auths= defined($name_if_auth) ? \%auths : \%delgs;
516 push @{ $delgs_or_auths->{$s} }, $ww;
519 sub zone_ns_name ($$) {
522 $delg_to_us=1 if grep { $name eq $_ } @{ $cfg->{'self_ns'} };
523 foreach $cg (@{ $cfg->{'conv_glueless'} }) {
524 zone_warning("nameserver $name in serverless-glueless".
525 " namespace area $cg",
527 if has_suffix_of(".$name",".$cg");
529 zone_warning("published server, as $name, but configured as stealth",
531 if $cfg->{'s'} =~ m/u/ &&
533 @{ $cfg->{'self_ns'} }, @{ $cfg->{'self_soa'} };
536 sub zone_server_queue ($$$$$) {
537 my ($addr,$name,$wwn,$wwq,$is_soa) = @_;
538 zone_server_addr($addr,$name,$wwn,$wwq,$is_soa);
539 push @to_check, $addr, "$name, $wwn", $name, $is_soa;
542 sub zone_server_addr ($$$$$) {
543 my ($addr,$name,$ww,$wwq,$is_soa) = @_;
544 debug_trace("zone_server_addr ".join '|',@_);
545 $addr_is_ok{$addr}= "$name ($wwq)"
546 if $is_soa || $cfg->{'s'} =~ m/u/;
547 zone_warning("forbidden nameserver address [$addr] $name",$ww)
548 if grep { $_ eq $addr } @{ $cfg->{'forbid_addr'} };
550 my ($name_is_self, $addr_is_self);
551 $name_is_self= grep { $_ eq $name }
552 @{ $cfg->{$is_soa ? 'self_soa' : 'self_ns'} };
553 $addr_is_self= grep { $_ eq $addr }
554 @{ $cfg->{'self_addr'} };
555 if ($name_is_self && !$addr_is_self) {
556 zone_warning("our $name supplied with wrong address [$addr]", $ww);
558 if (!$name_is_self && $addr_is_self) {
559 zone_warning("we [$addr] are named in ".
560 ($is_soa ? "SOA" : "NS").
561 " by wrong name $name",
564 if (!$name_is_self && !$addr_is_self &&
565 $is_soa && $cfg->{'s'} =~ m/p/) {
566 zone_warning("SOA ORIGIN $name is not us (".
567 (join ' ', @{ $cfg->{'self_soa'} }).")", $ww);
569 $delg_to_us=1 if $addr_is_self && !$is_soa;
572 sub zone_check_soa ($$$$) {
573 my ($uaddr,$wa,$name,$is_ns) = @_;
574 my ($lame,$serial,$origin,$got,$rcode,@soa_addrs,$soa_addr,$ww,$wwn);
575 verbose("checking service at [$uaddr] $name");
576 $lame= 'dead or lame';
579 if ($dig_type eq 'flags:') {
580 $lame= $dig_rdata =~ m/ aa / ? '' : 'lame';
581 } elsif ($dig_type eq 'soa' && $dig_owner eq $zone && !$lame) {
582 die "several SOAs ? $ww" if defined $origin;
584 $got =~ m/^(\d+) (\S+)$/ or die "$got ?";
585 ($serial,$origin) = ($1,$2);
589 $lame= 'broken' if !$lame && !defined $origin;
590 if ($lame) { zone_warning("$lame server [$uaddr]",$wa); return; }
591 progress(2, sprintf "%-16s %46s has %s%s",
592 $zone, "$name [$uaddr]", $serial, $is_ns ? '' : '*');
593 push @{ $soas{$got} }, $ww;
594 ($rcode,@soa_addrs)= lookup($origin,'a','0',"SOA ORIGIN");
595 $wwn= "SOA ORIGIN from $ww";
596 foreach $soa_addr (@soa_addrs) {
597 zone_server_queue($soa_addr,$origin,$wwn,"SOA [$uaddr]",1);
601 sub zone_consistency() {
602 my ($d, $org_ser, $origin, $a, $h, $self_soa, $wa);
603 zone_consistency_set('delegations',\%delgs);
604 foreach $d (keys %delgs) { delete $auths{$d}; }
605 zone_consistency_set('zone nameserver rrset',\%auths);
606 foreach $h (keys %glue) {
607 zone_consistency_set("glue for $h", $glue{$h});
609 zone_consistency_set("serial number and/or SOA ORIGIN",\%soas);
610 $self_soa= $cfg->{'self_soa'};
613 sub zone_servers_ok () {
617 foreach $a (@{ $cfg->{'servers'} }) {
618 next if exists $addr_is_ok{$a};
619 zone_warning("we slave from [$a]",'')
623 foreach $a (keys %addr_is_ok) {
624 zone_warnmore("permitted master [$a] $addr_is_ok{$a}");
628 if ($cfg->{'s'} =~ m/s/ && !$delg_to_us) {
629 zone_warning("we are supposedly published secondary,".
630 " but not listed as a nameserver",'');
631 map { $fs{$_}=1 } keys(%delgs), keys(%auths);
632 zone_warnmore("servers are: ". join ' ', sort keys %fs);
636 sub zone_consistency_set ($%) {
639 if (keys(%$set) > 1) {
640 zone_warning("inconsistent $msg:",'');
641 foreach $d (keys %$set) {
642 foreach $o (@{ $set->{$d} }) { zone_warnmore(" $d from $o"); }
647 sub zone_check_local () {
648 zone_servers_simplefind();
652 sub zone_servers_simplefind () {
653 my ($rcode,@nsnames,$ns,@soas,$origin);
655 ($rcode,@nsnames)= lookup($zone,'ns-','0',"zone's servers");
656 foreach $ns (@nsnames) {
657 zone_ns_name($ns,"NS");
658 zone_server_simple($ns,'NS',0);
660 $delgs{join ' ', sort @nsnames} = [ "zone's servers" ];
662 ($rcode,@soas)= lookup($zone,'soa','0',"SOA ORIGIN");
663 die "multiple SOA RRs in set! @soas ?" if @soas!=1;
664 $soas[0] =~ m/^(\S+)\s/ or die "SOA ? $_";
665 zone_server_simple(domain_canon($1,"lookup $zone SOA"),'SOA',1);
668 sub zone_server_simple ($$$) {
669 my ($name,$ww,$is_soa) = @_;
670 my ($rcode,@addrs,$addr);
671 ($rcode,@addrs)= lookup($name,'a','0', "server - ".
672 ($is_soa ? "SOA ORIGIN" : "NS"));
673 foreach $addr (@addrs) { zone_server_addr($addr,$name,$ww,$ww,$is_soa); }
676 sub zone_style ($$) {
677 my ($stylechar, $default) = @_;
678 local ($_) = $$cfg{'s'};
679 $stylechar =~ s/\W/\\$&/ or die;
680 return m/(\S*)$stylechar/ ? $1 !~ m/\!/ : $default;
683 #-------------------- mailing
685 use vars qw($m_base $m_lastok @m_ok @m_fail
688 sub mail_zone_before () {
689 $m_base= $$cfg{'maildir'}.'/'.$zone;
695 $m_lock= IO::File "${m_base}_lock", O_RDWR|O_CREAT, 0600
696 or die "$quis: create lockfile ${m_base}_lock";
697 if (!flock($m_lock, LOCK_EX|LOCK_NB)) {
698 <$m_lock> =~ m/^\d+ /;
699 die "$quis: $zone: concurrrency? - flock $&$!\n";
703 (@s1= $m_lock->fstat) or die "$quis: fstat ${m_base}_lock: $!\n";
704 (@s2= stat "${m_base}_lock") or
705 die "$quis: stat ${m_base}_lock: $!\n";
706 last if ($s1[0] eq $s2[0] && $s1[1] eq $s2[1]);
709 print $m_lock "$$ \n" or $m_lock->flush
710 die "$quis: write pid to ${m_base}_lock: $!\n";
712 if ($m_info= IO::File "${m_base}_info", 'r') {
714 $_ =~ m/\n/ or die "$quis: read ${m_base}_info: $!\n";
715 m/^\d+ (\d+|-) ([0-9:]*) ([0-9:]*) / or
716 die "$quis: ${m_base}_info malformed\n";
718 if ($domail ne 'first') {
719 if ($2 eq ':' && $3 eq ':') {
720 warn "$quis: $zone: mid/last run, but last".
721 "run already done, ignoring zone\n";
724 @m_ok= split /\:/, $2;
725 @m_fail= split /\:/, $3;
727 } elsif ($! != &ENOENT) {
728 die "$quis: open ${m_base}_info: $!\n";
729 } elsif ($domail eq 'first') {
730 warn "$quis: $zone: first run, but not --mail-first,".
734 if ($domail eq 'first') {
735 remove "${m_base}_history" or $!==&ENOENT
736 or die "$quis: remove ${m_base}_history: $!\n";
738 $progress_fh= $warn_fh= new IO::File "${m_base}_history",'a',0666
739 or die "$quis: open ${m_base}_history: $!\n";
740 $m_info= new IO::File "${m_base}_info.tmp",'w',0666
741 or die "$quis: open ${m_base}_info.tmp: $!\n";
744 progress(-1, "\n".('-'x70)."\n".ptime($m_time)."\n");
747 sub mail_zone_after () {
748 if ($zone_warnings{$zone}) {
749 push @m_fail, $m_time;
750 progress(-1,"failed - $zone_warnings{$zone} warnings");
754 progress(-1,"everything is fine");
756 close $progress_fh or die "$quis: close ${m_base}_history: $!\n";
757 $progress_fh= $warn_fh= 'STDERR';
759 if ($domail eq 'final') {
760 if (100*@m_fail <= $$cfg{'mailmwarn'}*(@m_mail + @m_ok)) {
761 printf " %-40s ok\n" or die "$quis: mail ok report: $!\n";
762 } elsif (zone_style('@',0)) ) {
763 printf " %-40s mail suppressed\n"
764 or die "$quis: mail suppress report: $!\n";
770 @m_fail= @m_ok= ('','')
771 if $domail eq 'final';
773 printf $m_info "%s %s %s %s \n",
774 $m_time, $m_lastok, join(':',@m_ok), join(':',@m_fail)
775 or die "$quis: write new ${m_base}_info: $!\n";
776 $m_info->close or die "$quis: close new ${m_base}_info: $!\n";
777 rename "${m_base}_info.tmp", "${m_base}_info"
778 or die "$quis: install new ${m_base}_info: $!\n";
783 sub pmail ($) { print $m_m $_[0] or die "$quis: write ${m_base}_mail: $!\n"; }
784 sub ptime ($) { my ($time)=@_; return gmtime($time)." GMT ($time)"; }
786 sub mail_zone_mail () {
787 my ($log, $zone_to, $zterr, $c, $r);
788 $m_m= new IO::File, "${m_base}_mail", 'w', 0666
789 or die "$quis: create ${m_base}_mail: $!\n";
790 $zone_to=''; $zterr='';
791 if (!zone_style("\$",$$cfg{'s'} =~ m/u/)) {
793 $_= lookup($zone,'soa','0','problem-addr');
794 m/\n\n/ and die "multiple soas\n";
795 m/^\S+ (\S.*\@\S+) [0-9 ]+$/ or
796 die "bad soa \`$_'\n";
803 From: zone check system <$$cfg{'admin'}>
804 Subject: $zone - configuration problems report
808 pmail("SOA MNAME for $zone <$zone_to>\nCC: ")
810 pmail($$cfg{'admin'}."\n\n");
812 You are receiving this mail because your email address is listed
813 in the SOA (Start Of Authority) record for $zone
814 in the DNS, which means you are supposedly the DNS administrator
815 responsible for this zone. This report is generated automatically
816 on behalf of $$cfg{'admin'}, who
817 is the administrator for a server for the zone. Please contact
818 them if you have any problem with this report.
823 Sent to $$cfg{'admin'} since SOA MNAME unavailable:
829 The zone has had configuration errors or persistent operational
830 problems during recent checks. See the logs below for details.
832 Check history for $zone:
835 if ($m_lastok ne '-') {
836 pmail(" Last seen to be fine: ".ptime($m_lastok)."\n");
838 pmail(" No record of this zone ever being fine.\n");
841 pmail(" Errors/warnings at: ".ptime($t)."\n");
844 pmail(" Everything in order at: ".ptime($t)."\n");
847 $log= new IO::File "${m_base}_history",'r'
848 or die "$quis: reopen ${m_base}_history: $!";
852 $log->error && $log->close
853 or die "$quis: reread or close ${m_base}_log: $!";
854 $m_m->close or die "$quis: close ${m_base}_mail: $!\n";
855 $m_m= new IO::File "${m_base}_mail"
856 or die "$quis: reopen ${m_base}_mail: $!";
858 defined($c= fork) or die "$quis: fork for mail: $!\n";
860 open STDIN, "<& ${m_m}" or die "$quis - sendmail: dup for stdin: $!\n";
861 exec '/usr/sbin/sendmail','-odq','-oee','-oi',
862 'ijackson@chiark.greenend.org.uk'; # should be -t
863 die "$quis - sendmail: exec: $!\n";
866 $!=0; $r= waitpid $c,0;
867 $r == $c or die "$quis: waitpid sendmail ($c): $r $!";
868 $? and warn "$quis: sendmail failed: $?\n";
870 printf " %-40s %s\n", $zone, $zone_to or
871 die "$quis: write mailing report: $!\n";
874 #-------------------- outputting
879 $o= "zone \"$zone\" {\n";
880 if ($$cfg{'s'} =~ m/p/) {
881 $o.= " type master;\n";
883 $o.= " type slave;\n".
885 foreach $m (@{ $$cfg{'servers'} }) { $o.= " $m;\n"; }
888 $o.= " file \"$$cfg{'file'}\";\n";
893 sub output_files () {
894 my ($fn,$ofn,$mfn,$l,$dir, $maxmode,$h,@to_install);
896 foreach $ofn (keys %output_contents) {
897 $fn= $ofn; $mfn= "output file $fn";
900 $! == &ENOENT or die "$quis: stat $mfn:\n $!\n";
904 $maxmode= (stat _)[2];
907 defined($l= readlink $fn)
908 or die "$quis: readlink $mfn:\n $!\n";
909 $dir= $fn =~ m,^.*/, ? $& : './';
910 $fn= "$dir$l" unless $l =~ m,^/,;
911 $mfn= "output file $fn (symlink target of $ofn)";
913 die "$quis: output file $mfn exists but is not a file".
914 " (or symlink to one)";
917 unlink "$fn.new" or $! == &ENOENT or
918 die "$quis: cannot clear out old .new version of $mfn:\n $!";
919 $h= new IO::File "$fn.new",'w',$maxmode
920 or die("$quis: create .new version of $mfn:\n $!");
922 "# generated by $quis, do not edit\n",
923 $output_contents{$ofn}
924 or die "$quis: write data to .new version of $mfn:\n $!";
926 or die "$quis: close .new version of $mfn:\n $!";
927 push @to_install, $fn,$mfn;
930 while (($fn,$mfn, @to_install) = @to_install) {
932 or die "$quis: install new version of $mfn:\n $!";
936 #-------------------- general utilities
940 return unless $debug>1;
941 local $Data::Dumper::Terse=1;
942 foreach $vn (split /\s+/, $_[0]) {
943 print "$vn := ", eval "Dumper(\\$vn)";
947 sub debug_trace ($) {
948 return unless $debug;
952 sub has_suffix_of ($$) {
953 my ($whole,$suffix) = @_;
954 debug_trace("has_suffix_of $whole $suffix");
955 return 0 if length $whole < length $suffix;
956 return 0 if substr($whole, length($whole) - length($suffix)) ne $suffix;
957 debug_trace("has_suffix_of $whole $suffix YES");
962 my ($domain,$type,$okrcodes,$w) = @_;
964 debug_trace("lookup ==> (->$okrcodes) $domain $type");
967 defined($c= open $h, "-|") or die "$quis: fork adnshost:\n $!\n";
969 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
971 die "$quis: exec adnshost:\n $!\n";
973 @result= $h->getlines();
974 $h->error and die "$quis: read from adnshost:\n $!\n";
977 die "$quis: lookup -t$type $domain $okrcodes ($w) failed $? $! @result\n"
978 if $! or $?&255 or $?>1536 or index($okrcodes,$?>>8)<0;
979 debug_trace("lookup <== $? @result");
984 my ($eachrr, $qowner,$qtype,$qaddr) = @_;
985 # also pseudo-rr with type `flags:'
986 my ($h,$inmid,$irdata,$c,$digwhy);
989 debug_trace("dig ==> \@$qaddr $qowner $qtype");
992 defined($c= open $h, "-|") or die "$quis: fork dig:\n $!\n";
994 open STDERR, ">&STDOUT" or die $!;
996 '+nodef','+nosea','+nodebug','+norecurse',
997 "\@$qaddr",'-t',$qtype,$qowner);
998 die "$quis: exec dig:\n $!\n";
1002 if (!defined($_= $h->getline())) {
1003 $h->error() and die "$quis: read from dig:\n $!\n";
1007 if (length $inmid) {
1008 s/^\s+/ / or die "$inmid // $_ ?";
1012 s/$/ \(/ unless s/\s*\)\s*$//;
1014 if (s/\s*\(\s*$//) { $inmid= $_; next; }
1015 $digwhy= "dig $qowner $qtype $qaddr \`$_'";
1016 if (m/^\;\; flags\:( [-0-9a-z ]+)\;/) {
1017 $dig_owner=''; $dig_type='flags:'; $dig_rdata= "$1 ";
1018 debug_trace("dig f: $dig_rdata");
1022 } elsif (m/^([-.0-9a-z]+)\s+\d\w+\s+in\s+([a-z]+)\s+(\S.*)/i) {
1023 $dig_owner=domain_canon($1,$digwhy); $dig_type=lc $2; $irdata=$3;
1024 if ($dig_type eq 'a') {
1025 $irdata =~ m/^[.0-9]+$/ or die "$irdata ?";
1027 } elsif ($dig_type eq 'ns') {
1028 $irdata =~ m/^[-.0-9a-z]+$/i or die "bad nameserver $irdata ?";
1029 $dig_rdata= domain_canon($irdata,$digwhy);
1030 } elsif ($dig_type eq 'soa') {
1031 $irdata =~ m/^([-.0-9a-z]+)\s+.*\s+(\d+)(?:\s+\d\w+){4}$/i
1032 or die "bad SOA $irdata ?";
1033 $dig_rdata= $2.' '.domain_canon($1,$digwhy);
1035 debug_trace("ignoring uknown RR type $dig_type");
1038 debug_trace("dig $dig_owner $dig_type $dig_rdata");
1041 debug_trace("ignoring unknown dig output $_");
1045 debug_trace("dig <== gave $?");
1048 sub domain_canon ($$) {
1051 return '.' if $i eq '.';
1052 die "domain $i ($w) ?" unless $i =~ m/^[0-9a-z]/i;