7 use vars qw($etcfile $where);
8 $etcfile= "/etc/bind/chiark-conf-gen.zones";
11 use vars qw($mode $verbosity $debug);
16 while (@ARGV && $ARGV[0] =~ m/^\-/) {
20 if (m/^quiet$/) { $verbosity=0; }
21 elsif (m/^verbose$/) { $verbosity=2; }
22 elsif (m/^(yes|no|force)$/) { m/^./; $mode= $&; }
23 elsif (m/^config$/) { $etcfile= loarg(); $where= '--config option'; }
24 else { usageerr("unknown option --$_"); }
29 if (s/^[ynf]//) { $mode=$&; }
30 elsif (s/^v//) { $verbosity=2; }
31 elsif (s/^q//) { $verbosity=0; }
32 elsif (s/^D//) { $debug=1; }
33 elsif (s/^C//) { $etcfile= soarg(); $where= '-C option'; }
34 else { usageerr("unknown option -$&"); }
39 sub loarg() { usageerr("missing option value") if !@ARGV; return shift @ARGV; }
40 sub soarg() { my ($rv); $rv=$_; $_=''; return length $rv ? $rv : loarg(); }
42 usageerr("must specify either -f|-y|-n or zones (and not both)")
43 if !!$mode == !!@ARGV;
48 usage: named-conf-regen [-rvq] -f|-y|-n|<zone>...\n".
50 " -f --force install without checking\n".
51 " -y --yes check and install\n".
52 " -n --no check only\n".
53 "additional options:\n".
54 " -q --quiet no output for OK zones\n".
55 " -v --verbose extra verbose\n";
58 cfg_fail("config filename $etcfile should have been absolute path of a file")
59 unless $etcfile =~ m,^/, && $etcfile !~ m,/$,;
61 use vars qw($default_dir);
62 $default_dir= $etcfile;
63 $default_dir =~ s,/[^/]+$,,;
65 use vars qw($slave_dir $slave_prefix $slave_suffix);
70 use vars qw(@self_ns @self_soa);
71 @self_ns= @self_soa= ();
73 use vars qw(%zone_cfg @zone_cfg_list);
77 use vars qw($output $default_output %output_contents);
82 use vars qw($check $install);
83 $check= $mode !~ m/^n/;
84 $install= $mode =~ m/^[yf]/;
86 read_config($etcfile);
87 debug_dump('@zone_cfg_list %zone_cfg');
88 process_zones($mode ? @zone_cfg_list : @ARGV);
89 debug_dump('%output_contents');
91 use vars qw($zone $cfg $warnings);
95 return if !$verbosity;
99 sub process_zones (@) {
103 foreach $zone (@zones) {
104 $cfg= $zone_cfg{$zone} || { 'style' => 'foreign' };
105 progress(sprintf "%-40s %s", $zone, $$cfg{'style'});
107 eval { zone_check() };
108 zone_warning("checks failed: $@") if length $@;
110 zone_output() if $install;
114 sub zone_warning ($) {
118 print STDERR "$zone: warning: $w\n" or die $!;
122 sub zone_warnmore ($) {
123 print STDERR " $_[0]\n" or die $!;
126 use vars qw(%delgs # $delgs{$nameserver_list} = [ $whosaidandwhy ]
127 %auths # $auths{$nameserver_list} = [ $whosaidandwhy ]
128 %glue # $glue{$name}{$addr_list} = [ $whosaidandwhy ]
129 %soas # $soa{"$origin $serial"} = [ $whosaidandwhy ]
130 @to_check # ($addr,$whyask,\%delgs_or_auths,$glueless_ok, ...)
131 @to_check_soa # ($addr,$whyask, ...)
135 my ($super_zone, @super_nsnames,
136 $super_ns, @super_ns_addrs, $super_ns_addr, $s, $wa, $zcr,
137 %nsrrset_checked, %soa_checked);
139 %delgs= %auths= %glue= ();
140 @to_check= @to_check_soa= ();
144 debug_trace("zone $zone superzone $super_zone");
145 $super_zone =~ s/^[^.]+\.// or die "no superzone ? ($super_zone)\n";
146 ($rcode,@super_nsnames)= lookup($super_zone,'ns-','06');
149 for $super_ns (@super_nsnames) {
150 $super_ns= lc $super_ns;
151 ($rcode,@this_ns_addrs)= lookup($super_ns,'a','0');
152 foreach $super_ns_addr (@this_ns_addrs) {
155 "addr for $super_ns, server for $super_zone, parent"
160 # We do these in order so that we always do NS RRset checks on
161 # nameservers that came from other NS RRsets first; otherwise
162 # we might set nsrrset_checked due to a glueless_ok check,
163 # and then not check for gluefulness later.
164 if (($addr,$wa,$nsrrset_ref,$glueless_ok,@to_check) = @to_check) {
165 next if $nsrrset_checked{$ns}++;
166 push @to_check_soa, $addr, $why;
167 zone_check_nsrrset($super_ns_addr,"$addr, $wa",
168 %$delgs_or_auths,$glueless_ok);
169 } elsif (($addr,$wa) = @to_check_soa) {
170 next if !$soa_checked{$ns}++;
171 zone_check_soa($addr,"$addr, $wa");
177 sub zone_consistency() {
179 zone_consistency_set('delegations',%delgs);
180 foreach $d (keys %delgs) { delete $auths{$d}; }
181 zone_consistency_set('zone nameserver rrset',%auths);
182 foreach $h (keys %glue) {
183 zone_consistency_set("glue for $h", %{ $glue{$h} });
187 sub zone_consistency_set ($\%) {
190 if (keys(%$set) != 1) {
191 zone_warning("inconsistent $msg:");
192 foreach $d (keys %$set) {
193 foreach $o (@$d) { zone_warnmore(" $d from $o"); }
198 sub zone_check_soa ($$) {
199 my ($uaddr,$ww) = @_;
200 my ($lame,$origin,$got,$rcode,@soa_addrs,$soa_addr);
201 $lame= 'dead or lame';
203 if ($dig::type eq 'flags:') {
204 $lame= $dig::rdata =~ m/ aa / ? 'lame' : '';
205 } elsif ($dig::type eq 'soa' && $dig::owner eq $zone && !$lame) {
206 die "several SOAs ? $why" if defined $origin;
207 $dig::rdata =~ m/^(\S+) \S+ (\d+) /
208 or die "soa $dig::rdata ? $why";
214 $lame= 'broken' if !$lame && !defined $origin;
215 if ($lame) { zone_warning("$lame server $ww"); return; }
216 push @{ $soas{$got} }, $why;
217 ($rcode,@soa_addrs)= lookup($origin,'a','0');
218 foreach $soa_addr (@soa_addrs) {
221 "addr for $origin, SOA ORIGIN from $why";
225 sub zone_check_nsrrset ($$\%\%) {
226 my ($uaddr,$ww, $delgs_or_auths,$glueless_ok) = @_;
227 my (@s, $s, %s2g, @glue, $glue);
229 if ($dig::type eq 'ns' && $dig::owner eq $zone) {
230 $s2g{lc $dig::rdata} = [ ];
231 } elsif ($dig::type eq 'a' && exists $s2g{$dig::owner}) {
234 "glue for $dig::owner, from (eg) $why",
236 push @{ $s2g{$dig::rdata} }, $dig::rdata;
242 @glue= @{ $s2g{$s} };
244 zone_warning("glueless NS $s, from $ww") unless $glueless_ok;
247 $glue= join ' ', sort @glue;
248 push @{ $glue{$s}{$glue} }, $why;
251 push @{ $nsrrset_ref->{$s} }, $why;
255 $output_contents{$$cfg{'output'}}.=
263 $$cfg{'style'} eq 'primary' ? 'master' : 'slave',
269 return unless $debug;
270 local $Data::Dumper::Terse=1;
271 foreach $vn (split /\s+/, $_[0]) {
272 print "$vn := ", eval "Dumper(\\$vn)";
276 sub cfg_fail ($) { die "$0: $where:\n $_[0]\n"; }
278 sub read_config ($) {
280 my ($fh,$z,@self, $dir,$prefix,$suffix,$lprefix,$lsuffix);
283 $fh= new IO::File $if,'r' or cfg_fail("open $if:\n $!");
285 if (!defined($_= <$fh>)) {
286 cfg_fail("read config file $if:\n $!") if $fh->error();
290 s/^\s+//; chomp; s/\s+$//;
294 if (m/^self(\-ns|\-soa|)\s+(\S.*\S)/) {
295 @self= split /\s+/, $2;
296 @self_ns= @self if $1 ne '-soa';
297 @self_soa= @self if $1 ne '-ns';
298 } elsif (m/^primary\-dir\s+(\S+)((?:\s+(\S+))??:\s+(\S+))?$/) {
299 ($dir, $prefix, $suffix) = (qualify($1),$2,$3);
300 $suffix= '_db' if !length $suffix;
301 opendir D, $dir or cfg_fail("open primary-dir $dir:\n $!");
302 $lprefix= length $prefix; $lsuffix= length $suffix;
303 while ($!=0, $_= readdir D) {
304 next if m/^\./ && !$lprefix;
305 next unless length > $lprefix+$lsuffix;
306 next unless substr($_,0,$lprefix) eq $prefix;
307 next unless substr($_,length($_)-$lsuffix) eq $suffix;
308 $z= substr($_,$lprefix,length($_)-($lprefix+$lsuffix));
309 zone_conf($z,'primary',"$dir/$_");
311 $! and cfg_fail("read primary-dir $dir:\n $!");
312 closedir D or cfg_fail("close primary-dir $dir:\n $!");
313 } elsif (m/^primary\s+(\S+)\s+(\S+)$/) {
314 zone_conf($1,'primary',qualify($2));
315 } elsif (m/^secondary\s+(\S+)\s+([0-9.\t]+)$/) {
316 zone_conf($1,'secondary','',$2);
317 } elsif (m/^stealth\s+(\S+)\s+([0-9. \t]+)$/) {
318 zone_conf($1,'stealth','',split /\s+/, $2);
319 } elsif (m/^slave\-dir\s+(\S+)((?:\s+(\S+))??:\s+(\S+))?$/) {
320 ($slave_dir, $slave_prefix, $slave_suffix) = (qualify($1),$2,$3);
321 } elsif (m/^output\s+bind8\+(\S+)$/) {
322 cfg_fail("default output may not apply to only some zones")
323 if @zone_cfg_list && length $default_output;
324 set_output(qualify($1));
325 } elsif (m/^include\s+(\S+)$/) {
328 cfg_fail("unknown configuration directive".
329 " or incorrect syntax or arguments");
332 $fh->close or cfg_fail("close config file $if:\n $!");
337 $i= "$default_dir/$i" unless $i =~ m,^/,;
340 sub zone_conf ($$@) {
341 my ($zone,$style,$file,@servers) = @_;
342 $file= qualify("$slave_dir/$slave_prefix".$zone.$slave_suffix)
344 if (!length $output) {
345 $default_output= qualify('chiark-conf-gen.bind8')
346 unless length $default_output;
347 set_output($default_output);
349 cfg_fail("redefined zone $zone") if exists $zone_cfg{$zone};
350 $zone_cfg{$zone}{'file'}= $file;
351 $zone_cfg{$zone}{'style'}= $style;
352 $zone_cfg{$zone}{'servers'}= [ @servers ];
353 $zone_cfg{$zone}{'self_soa'}= [ @self_soa ];
354 $zone_cfg{$zone}{'self_ns'}= [ @self_ns ];
355 $zone_cfg{$zone}{'output'}= $output;
356 push @zone_cfg_list, $zone;
362 $output_contents{$output}= '';
366 my ($type,$domain,$okrcodes) = @_;
368 defined($c= open ADH, "-|") or die "$0: fork adnshost:\n $!\n";
370 exec 'adnshost','-Fi','+Do','+Dt','+Dc','-Cf',"-t$type",
372 die "$0: exec adnshost:\n $!\n";
377 die "$0: lookup -t$type $domain $okrcodes failed $? $!\n"
378 if $! or $?>6 or index($okrcodes,$?)<0;
388 my ($type,$domain) = @_;
389 my (@result)= lookup($type,$domain);
390 @result==1 or die "$0: lookup -t$type $domain gave more than one RR\n";
395 return unless $check;
397 $soa= lookup1('soa',$zone);
398 $soa_origin=$soa; $soa_origin =~ s/ .*//;
399 $soa_origin_addr= lookup1('a',$soa_origin);
401 @zone_ns= lookup('ns-',$zone);
403 @ok_sources= ($soa_origin_addr);
404 $ok_sources_descr= "SOA ORIGIN $soa_origin [$soa_origin_addr]";
406 if ($style eq 'unoff' || $style eq 'backup') {
407 for $zone_ns (@zone_ns) {
408 @zone_ns_addrs= lookup('a',$zone_ns);
409 push @ok_sources, @zone_ns_addrs;
410 $ok_sources_descr.= ", NS $zone_ns [@zone_ns_addrs]";
414 for $server (@servers) {
415 grep { $server eq $_ } @ok_sources
416 or warn "secondarying from $server which is not ".
417 "$ok_sources_desc\n";
420 if ($style eq 'secondary') {
421 grep { $zone_ns=$_, grep { $myname eq $_ } @mynames } @zone_n
422 or warn "supposedly published secondary but we ".
423 "(@mynames) are not published ($@zone_ns)\n";
430 # $superzone= $zone; $superzone =~ s/^[^\.]+\.//;
431 # @super_ns= lookup('ns-',$zone);
436 for $super_ns (@super_ns) {
438 open DIG, "dig @$super_ns. -t ns +norecurse $zone."
439 or die "$0: fork for dig:\n $!\n";
449 warning "$myname unlisted NS $nsnames"
455 warning "$myname advertised NS $nsnames"
463 set -e; a="`host -t a \"$ns\".`"; set +e
464 taddrs="`echo \" $a\" | expand | sed -n '
466 s/^[^ ][^ ]* *A *\([0-9][.0-9]*\)/\1/p
468 equlines "A $ns" "$a" "$taddrs"
469 addrs="$addrs $taddrs"
479 for server in $servers
487 if [ "x$addr" = "x$server" ]
494 warning "server $server? but $rectype $names" $addrs
509 checkhostout -val localhost
515 chdir "$base/primary" or die "$0: chdir $base/primary:\n $!";
516 beginfile('primary.zones');
519 $zone= $f; $zone =~ s/_db$//;
524 zone="`echo $f | sed -e 's/_db$//'`"
533 $currentfile_opened= $install ? "$conf/$currentfile.new" : "/dev/null";
534 open CFF, "> $toopen" or die "$0: begin $currentfile_opened:\n $!\n";
538 close CFF or die "$0: close $currentfile_opened:\n $!\n";
539 push @files, $currentfile;
542 sub installfiles () {
543 return unless $install;
544 chdir $conf or die "$0: chdir $conf:\n $!\n";
546 rename "$f.new", $f or die "$0: install new $f:\n $!\n";
551 echo >&2 "$zone $style: $*"
552 warnings=$[$warnings+1]
556 if [ "x`echo \" $2\" | wc -l`" != "x`echo \" $3\" | wc -l`" ]
564 hostout="`host $1 \"$zone\" 2>&1 >/dev/null $2 | egrep -v \
565 '^ \!\!\! .* SOA primary .* is not advertised via NS$'`"
567 if [ "x$hostout" = x ]; then return; fi
570 warning "warnings from host:"
579 echo -n "$zone $style " >&2
586 if [ $warnings != 0 ]
588 echo >&2 "$warnings warnings "