| 1 | # dns/trunk/DNSDB/ExportBIND.pm
|
|---|
| 2 | # BIND data export/publication
|
|---|
| 3 | # Call through DNSDB.pm's export() sub
|
|---|
| 4 | ##
|
|---|
| 5 | # $Id: ExportBIND.pm 865 2022-09-20 21:50:30Z kdeugau $
|
|---|
| 6 | # Copyright 2022 Kris Deugau <kdeugau@deepnet.cx>
|
|---|
| 7 | #
|
|---|
| 8 | # This program is free software: you can redistribute it and/or modify
|
|---|
| 9 | # it under the terms of the GNU General Public License as published by
|
|---|
| 10 | # the Free Software Foundation, either version 3 of the License, or
|
|---|
| 11 | # (at your option) any later version.
|
|---|
| 12 | #
|
|---|
| 13 | # This program is distributed in the hope that it will be useful,
|
|---|
| 14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 16 | # GNU General Public License for more details.
|
|---|
| 17 | #
|
|---|
| 18 | # You should have received a copy of the GNU General Public License
|
|---|
| 19 | # along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|---|
| 20 | ##
|
|---|
| 21 |
|
|---|
| 22 | package DNSDB::ExportBIND;
|
|---|
| 23 |
|
|---|
| 24 | use strict;
|
|---|
| 25 | use warnings;
|
|---|
| 26 |
|
|---|
| 27 | sub export {
|
|---|
| 28 | # expected to be a DNSDB object
|
|---|
| 29 | my $dnsdb = shift;
|
|---|
| 30 |
|
|---|
| 31 | # to be a hash of views/locations, containing lists of zones
|
|---|
| 32 | my %viewzones;
|
|---|
| 33 |
|
|---|
| 34 | # allow for future exports of subgroups of records
|
|---|
| 35 | my $viewlist = $dnsdb->getLocList(curgroup => 1);
|
|---|
| 36 |
|
|---|
| 37 | my $soasth = $dnsdb->{dbh}->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
|
|---|
| 38 | "FROM records WHERE rdns_id=? AND type=6");
|
|---|
| 39 | my $recsth = $dnsdb->{dbh}->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ".
|
|---|
| 40 | "FROM records WHERE rdns_id=? AND NOT type=6 ".
|
|---|
| 41 | "ORDER BY masklen(inetlazy(val)) DESC, inetlazy(val)");
|
|---|
| 42 |
|
|---|
| 43 | # Fetch active zone list
|
|---|
| 44 | my $revsth = $dnsdb->{dbh}->prepare("SELECT rdns_id,revnet,status,changed,default_location FROM revzones WHERE status=1 ".
|
|---|
| 45 | "ORDER BY masklen(revnet) DESC, rdns_id");
|
|---|
| 46 | # Unflag changed zones, so we can maybe cache the export and not redo everything every time
|
|---|
| 47 | my $zonesth = $dnsdb->{dbh}->prepare("UPDATE revzones SET changed='n' WHERE rdns_id=?");
|
|---|
| 48 | $revsth->execute();
|
|---|
| 49 |
|
|---|
| 50 | my %recflags; # need this to be independent for forward vs reverse zones, as they're not merged
|
|---|
| 51 |
|
|---|
| 52 | while (my ($revid,$revzone,$revstat,$changed,$defloc) = $revsth->fetchrow_array) {
|
|---|
| 53 | my $cidr = NetAddr::IP->new($revzone);
|
|---|
| 54 | my $zfile = $cidr->network->addr."-".$cidr->masklen;
|
|---|
| 55 | # my $cachefile = "$dnsdb->{exportcache}/$zfile";
|
|---|
| 56 | # my $tmpcache = "$dnsdb->{exportcache}/tmp.$zfile.$$";
|
|---|
| 57 | my $tmpcache = "tmp.$zfile.$$"; # safety net. don't overwrite a previous known-good file
|
|---|
| 58 |
|
|---|
| 59 | ##fixme: convert logical revzone into .arpa name? maybe take a slice of showrev_arpa?
|
|---|
| 60 | ##fixme: need to bodge logical non-octet-boundary revzones into octet-boundary revzones
|
|---|
| 61 | ##fixme: do we do cache files? views balloon the file count stupidly
|
|---|
| 62 | ## foreach $octetzone $cidr->split(octet-boundary)
|
|---|
| 63 | ## loclist = SELECT DISTINCT location FROM records WHERE rdns_id = $zid AND inetlazy(val) <<= $octetzone
|
|---|
| 64 |
|
|---|
| 65 | #printf "non-octet? %s, %i\n", $cidr->masklen, $cidr->masklen % 8;
|
|---|
| 66 |
|
|---|
| 67 |
|
|---|
| 68 | eval {
|
|---|
| 69 |
|
|---|
| 70 | my $arpazone = DNSDB::_ZONE($cidr, 'ZONE', 'r', '.').($cidr->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
|
|---|
| 71 |
|
|---|
| 72 | # write fresh records if:
|
|---|
| 73 | # - we are not using the cache
|
|---|
| 74 | # - force_refresh is set
|
|---|
| 75 | # - the zone has changed
|
|---|
| 76 | # - the cache file does not exist
|
|---|
| 77 | # - the cache file is empty
|
|---|
| 78 | if (!$dnsdb->{usecache} || $dnsdb->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) {
|
|---|
| 79 | if ($dnsdb->{usecache}) {
|
|---|
| 80 | open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n";
|
|---|
| 81 | $zonefilehandle = *ZONECACHE;
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
| 84 | # fetch a list of views/locations present in the zone. we need to publish a file for each one.
|
|---|
| 85 | # in the event that no locations are present (~~ $viewlist is empty), /%view collapses to nothing in the zone path
|
|---|
| 86 | my (@loclist) = $dnsdb->{dbh}->selectrow_array("SELECT DISTINCT location FROM records WHERE rdns_id = ?", undef, $revid);
|
|---|
| 87 | push @loclist, $defloc unless grep /$defloc/, @loclist;
|
|---|
| 88 | my $zonepath = $dnsdb->{bind_export_reverse_zone_path};
|
|---|
| 89 | my %zonefiles; # to be a hash of file handles.
|
|---|
| 90 | ##fixme: need to open separate zone files for aggregated metazones eg /22 or /14
|
|---|
| 91 | foreach my $loc (@loclist) {
|
|---|
| 92 | my $zfilepath = $zonepath;
|
|---|
| 93 | $zfilepath =~ s/\%view/$loc/;
|
|---|
| 94 | $zfilepath =~ s/\%zone/$revzone/;
|
|---|
| 95 | $zfilepath =~ s/\%arpazone/$arpazone/;
|
|---|
| 96 | # Just In Case(TM)
|
|---|
| 97 | $zfilepath =~ s,[^\w./-],_,g;
|
|---|
| 98 | open $zonefiles{$loc}, ">", $zfilepath;
|
|---|
| 99 | printf {$zonefiles{$loc}} "; %s in view %s exported %s\n", $arpazone, $loc, scalar(localtime);
|
|---|
| 100 | print "open zonefile for '$loc', '$zfilepath'\n";
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | # need to fetch this separately since the rest of the records all (should) have real IPs in val
|
|---|
| 104 | $soasth->execute($revid);
|
|---|
| 105 | my (@zsoa) = $soasth->fetchrow_array();
|
|---|
| 106 | ##fixme: do we even need @loclist passed in?
|
|---|
| 107 | printrec_bind(\%zonefiles, $zsoa[7], 'y', \%recflags, $revzone,
|
|---|
| 108 | $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],'');
|
|---|
| 109 |
|
|---|
| 110 | $recsth->execute($revid);
|
|---|
| 111 | my $fullzone = _ZONE($tmpzone, 'ZONE', 'r', '.').($tmpzone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
|
|---|
| 112 |
|
|---|
| 113 | while (my ($host, $type, $val, $dist, $weight, $port, $ttl, $recid, $loc, $stamp, $expires, $stampactive)
|
|---|
| 114 | = $recsth->fetchrow_array) {
|
|---|
| 115 | next if $recflags{$recid};
|
|---|
| 116 |
|
|---|
| 117 | # Check for out-of-zone data
|
|---|
| 118 | if ($val =~ /\.arpa$/) {
|
|---|
| 119 | # val is non-IP
|
|---|
| 120 | if ($val !~ /$fullzone$/) {
|
|---|
| 121 | warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
|
|---|
| 122 | next;
|
|---|
| 123 | }
|
|---|
| 124 | } else {
|
|---|
| 125 | my $ipval = new NetAddr::IP $val;
|
|---|
| 126 | if (!$tmpzone->contains($ipval)) {
|
|---|
| 127 | warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
|
|---|
| 128 | next;
|
|---|
| 129 | }
|
|---|
| 130 | } # is $val a raw .arpa name?
|
|---|
| 131 |
|
|---|
| 132 | # Spaces are evil.
|
|---|
| 133 | $val =~ s/^\s+//;
|
|---|
| 134 | $val =~ s/\s+$//;
|
|---|
| 135 | if ($typemap{$type} ne 'TXT') {
|
|---|
| 136 | # Leading or trailng spaces could be legit in TXT records.
|
|---|
| 137 | $host =~ s/^\s+//;
|
|---|
| 138 | $host =~ s/\s+$//;
|
|---|
| 139 | }
|
|---|
| 140 |
|
|---|
| 141 | printrec_bind($zonefilehandle, $recid, 'y', \%recflags, $revzone,
|
|---|
| 142 | $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
|
|---|
| 143 |
|
|---|
| 144 | $recflags{$recid} = 1;
|
|---|
| 145 |
|
|---|
| 146 | } # while ($recsth)
|
|---|
| 147 |
|
|---|
| 148 | if ($dnsdb->{usecache}) {
|
|---|
| 149 | close ZONECACHE; # force the file to be written
|
|---|
| 150 | # catch obvious write errors that leave an empty temp file
|
|---|
| 151 | if (-s $tmpcache) {
|
|---|
| 152 | rename $tmpcache, $cachefile
|
|---|
| 153 | or die "Error overwriting cache file $cachefile with temporary file: $!\n";
|
|---|
| 154 | }
|
|---|
| 155 | }
|
|---|
| 156 |
|
|---|
| 157 | } # if $changed or cache filesize is 0
|
|---|
| 158 |
|
|---|
| 159 | };
|
|---|
| 160 | if ($@) {
|
|---|
| 161 | die "error writing ".($dnsdb->{usecache} ? 'new data for ' : '')."$revzone: $@\n";
|
|---|
| 162 | # error! something borked, and we should be able to fall back on the old cache file
|
|---|
| 163 | # report the error, somehow.
|
|---|
| 164 | } else {
|
|---|
| 165 | # mark zone as unmodified. Only do this if no errors, that way
|
|---|
| 166 | # export failures should recover a little more automatically.
|
|---|
| 167 | $zonesth->execute($revid);
|
|---|
| 168 | }
|
|---|
| 169 |
|
|---|
| 170 | # if ($dnsdb->{usecache}) {
|
|---|
| 171 | # # We've already made as sure as we can that a cached zone file is "good",
|
|---|
| 172 | # # although possibly stale/obsolete due to errors creating a new one.
|
|---|
| 173 | # eval {
|
|---|
| 174 | # open CACHE, "<$cachefile" or die $!;
|
|---|
| 175 | # print $datafile $_ or die "error copying cached $revzone to master file: $!" while <CACHE>;
|
|---|
| 176 | # close CACHE;
|
|---|
| 177 | # };
|
|---|
| 178 | # die $@ if $@;
|
|---|
| 179 | # }
|
|---|
| 180 |
|
|---|
| 181 |
|
|---|
| 182 |
|
|---|
| 183 | } # revsth->fetch
|
|---|
| 184 |
|
|---|
| 185 |
|
|---|
| 186 | # Write the view configuration last, because otherwise we have to be horribly inefficient
|
|---|
| 187 | # at figuring out which zones are visible/present in which views
|
|---|
| 188 | if ($viewlist) {
|
|---|
| 189 | my $tmpconf = "$dnsdb->{bind_zone_conf}.$$"; ##fixme: split filename for prefixing
|
|---|
| 190 | open BINDCONF, ">", $tmpconf;
|
|---|
| 191 |
|
|---|
| 192 | foreach my $view (@{$viewlist}) {
|
|---|
| 193 | #print Dumper($view);
|
|---|
| 194 | print BINDCONF "view $view->{location} {\n";
|
|---|
| 195 | # print "view $view->{location} {\n";
|
|---|
| 196 | # could also use an acl { ... }; statement, then match-clients { aclname; };, but that gets hairy
|
|---|
| 197 | # note that some semantics of data visibility need to be handled by the record export, since it's
|
|---|
| 198 | # not 100% clear if the semantics of a tinydns view with an empty IP list (matches anyone) are the
|
|---|
| 199 | # same as a BIND view with match-clients { any; };
|
|---|
| 200 | if ($view->{iplist}) {
|
|---|
| 201 | print BINDCONF " match-clients { ".join("; ", $view->iplist)."; };\n";
|
|---|
| 202 | # print " match-clients { ".join("; ", split(/[\s,]+/, $view->{iplist}))."; };\n";
|
|---|
| 203 | } else {
|
|---|
| 204 | print BINDCONF " match-clients { any; };\n";
|
|---|
| 205 | # print " match-clients { any; };\n";
|
|---|
| 206 | }
|
|---|
| 207 | foreach my $zone (@{$viewzones{$view->{location}}}) {
|
|---|
| 208 | ##fixme: notify settings, maybe per-zone?
|
|---|
| 209 | print qq( zone "$zone" IN {\n\ttype master;\n\tnotify no;\n\tfile "db.$zone";\n };\n);
|
|---|
| 210 | }
|
|---|
| 211 | print "};\n\n";
|
|---|
| 212 | } # foreach @$viewlist
|
|---|
| 213 | rename $tmpconf, $dnsdb->{bind_zone_conf};
|
|---|
| 214 | } # if $viewlist
|
|---|
| 215 |
|
|---|
| 216 | } # export()
|
|---|
| 217 |
|
|---|
| 218 |
|
|---|
| 219 | # Print individual records in BIND format
|
|---|
| 220 | sub printrec_bind {
|
|---|
| 221 | my $dnsdb = shift;
|
|---|
| 222 |
|
|---|
| 223 | # my ($zonefiles, $recid, $revrec, $loclist, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
|---|
| 224 | my ($zonefiles, $recid, $revrec, $recflags, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
|---|
| 225 | $loc, $stamp, $expires, $stampactive) = @_;
|
|---|
| 226 |
|
|---|
| 227 | # Just In Case something is lingering in the DB
|
|---|
| 228 | $loc = '' if !$loc;
|
|---|
| 229 |
|
|---|
| 230 | ## And now to the records!
|
|---|
| 231 |
|
|---|
| 232 | if ($typemap{$type} eq 'SOA') {
|
|---|
| 233 | # host contains pri-ns:responsible
|
|---|
| 234 | # val is abused to contain refresh:retry:expire:minttl
|
|---|
| 235 | # let's be explicit about abusing $host and $val
|
|---|
| 236 | my ($email, $primary) = (split /:/, $host)[0,1];
|
|---|
| 237 | my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3];
|
|---|
| 238 | my $serial = 0; # fail less horribly than leaving it empty?
|
|---|
| 239 | # just snarfing the right SOA serial for the zone type
|
|---|
| 240 | if ($revrec eq 'y') {
|
|---|
| 241 | ($serial) = $dnsdb->{dbh}->selectrow_array("SELECT zserial FROM revzones WHERE revnet=?", undef, $zone);
|
|---|
| 242 | } else {
|
|---|
| 243 | ($serial) = $dnsdb->{dbh}->selectrow_array("SELECT zserial FROM domains WHERE domain=?", undef, $zone);
|
|---|
| 244 | } # revrec <> 'y'
|
|---|
| 245 | # suppress a "uninitialized value" warning. should be impossible but...
|
|---|
| 246 | # abuse hours as the last digit pair of the serial for simplicity
|
|---|
| 247 | ##fixme?: alternate SOA serial schemes?
|
|---|
| 248 | $serial = strftime("%Y%m%d%H", localtime()) if !$serial;
|
|---|
| 249 | $primary .= "." if $primary !~ /\.$/;
|
|---|
| 250 | $email .= "." if $email !~ /\.$/;
|
|---|
| 251 | # print *{$zonefiles->{$loc}} "Z$zone:$primary:$email:$serial:$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n"
|
|---|
| 252 | # or die $!;
|
|---|
| 253 | print *{$zonefiles->{$loc}} "$zone $ttl IN SOA $primary $email ( $serial $refresh $retry $expire $min_ttl )\n"
|
|---|
| 254 | or die "couldn't write $zone SOA: $!";
|
|---|
| 255 | } # SOA
|
|---|
| 256 |
|
|---|
| 257 | elsif ($typemap{$type} eq 'A') {
|
|---|
| 258 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 259 | # print $datafile "+$host:$val:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 260 | print {$zonefiles->{$loc}} "$host $ttl IN A $val\n" or die $!;
|
|---|
| 261 | } # A
|
|---|
| 262 |
|
|---|
| 263 | elsif ($typemap{$type} eq 'NS') {
|
|---|
| 264 | if ($revrec eq 'y') {
|
|---|
| 265 | $val = NetAddr::IP->new($val);
|
|---|
| 266 |
|
|---|
| 267 | ##fixme: conversion for sub-/24 delegations in reverse zones?
|
|---|
| 268 | # if (!$val->{isv6} && ($val->masklen > 24)) {
|
|---|
| 269 | # }
|
|---|
| 270 |
|
|---|
| 271 | # print {$zonefiles->{$loc}} "$zone $ttl IN NS $host\n";
|
|---|
| 272 | print "$zone $ttl IN NS $host\n" or die $!;
|
|---|
| 273 |
|
|---|
| 274 | } else {
|
|---|
| 275 | # print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 276 | }
|
|---|
| 277 | } # NS
|
|---|
| 278 |
|
|---|
| 279 | elsif ($typemap{$type} eq 'AAAA') {
|
|---|
| 280 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 281 | print {$zonefiles->{$loc}} "$host $ttl IN AAAA $val\n" or die $!;
|
|---|
| 282 | } # AAAA
|
|---|
| 283 |
|
|---|
| 284 | elsif ($typemap{$type} eq 'TXT') {
|
|---|
| 285 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 286 | print {$zonefiles->{$loc}} "$host $ttl IN TXT \"$val\"\n" or die $!;
|
|---|
| 287 | } # TXT
|
|---|
| 288 |
|
|---|
| 289 | elsif ($typemap{$type} eq 'CNAME') {
|
|---|
| 290 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 291 | print {$zonefiles->{$loc}} "$host $ttl IN CNAME $val\n" or die $!;
|
|---|
| 292 | } # CNAME
|
|---|
| 293 |
|
|---|
| 294 | elsif ($typemap{$type} eq 'SRV') {
|
|---|
| 295 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 296 | print {$zonefiles->{$loc}} "$host $ttl IN SRV $distance $weight $port $val\n" or die $!;
|
|---|
| 297 | } # SRV
|
|---|
| 298 |
|
|---|
| 299 | elsif ($typemap{$type} eq 'RP') {
|
|---|
| 300 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
|---|
| 301 | print {$zonefiles->{$loc}} "$host $ttl IN RP $val\n" or die $!;
|
|---|
| 302 | } # RP
|
|---|
| 303 |
|
|---|
| 304 |
|
|---|
| 305 | elsif ($typemap{$type} eq 'PTR') {
|
|---|
| 306 | $$recflags{$val}++;
|
|---|
| 307 | if ($revrec eq 'y') {
|
|---|
| 308 |
|
|---|
| 309 | if ($val =~ /\.arpa$/) {
|
|---|
| 310 | # someone put in the formal .arpa name. humor them.
|
|---|
| 311 | print {$zonefiles->{$loc}} "$val $ttl IN PTR $host\n" or die $!;
|
|---|
| 312 | } else {
|
|---|
| 313 | $zone = NetAddr::IP->new($zone);
|
|---|
| 314 | if (!$zone->{isv6} && $zone->masklen > 24) {
|
|---|
| 315 | # sub-octet v4 zone
|
|---|
| 316 | ($val) = ($val =~ /\.(\d+)$/);
|
|---|
| 317 | print {$zonefiles->{$loc}} "$val.".DNSDB::_ZONE($zone, 'ZONE', 'r', '.').'.in-addr.arpa'.
|
|---|
| 318 | " $ttl IN PTR $host\n"
|
|---|
| 319 | or die $!;
|
|---|
| 320 | } else {
|
|---|
| 321 | # not going to care about strange results if $val is not an IP value and is resolveable in DNS
|
|---|
| 322 | $val = NetAddr::IP->new($val);
|
|---|
| 323 | print {$zonefiles->{$loc}} DNSDB::_ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
|
|---|
| 324 | " $ttl IN PTR $host\n"
|
|---|
| 325 | or die $!;
|
|---|
| 326 |
|
|---|
| 327 | }
|
|---|
| 328 | } # non-".arpa" $val
|
|---|
| 329 |
|
|---|
| 330 | } else {
|
|---|
| 331 | # PTRs in forward zones are less bizarre and insane than some other record types
|
|---|
| 332 | # in reverse zones... OTOH we can't validate them any which way, so we cross our
|
|---|
| 333 | # fingers and close our eyes and make it Someone Else's Problem.
|
|---|
| 334 | print {$zonefiles->{$loc}} "^$host:$val:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 335 | }
|
|---|
| 336 | } # PTR
|
|---|
| 337 |
|
|---|
| 338 | elsif ($type == 65280) { # A+PTR
|
|---|
| 339 | # Recurse to PTR or A as appropriate because BIND et al don't share
|
|---|
| 340 | # the tinydns concept of merged forward/reverse records
|
|---|
| 341 | $$recflags{$val}++;
|
|---|
| 342 | if ($revrec eq 'y') {
|
|---|
| 343 | printrec_bind($zonefiles, $recid, $revrec, $recflags, $zone, $host, 12, $val, $distance, $weight, $port, $ttl,
|
|---|
| 344 | $loc, $stamp, $expires, $stampactive);
|
|---|
| 345 | #print {$zonefiles->{$loc}} "=$host:$val:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 346 | # printrec_bind(\%zonefiles, $recid, 'y', \@loclist, $revzone,
|
|---|
| 347 | # $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
|
|---|
| 348 | # my ($zonefiles, $recid, $revrec, $loclist, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
|---|
| 349 | # $loc, $stamp, $expires, $stampactive) = @_;
|
|---|
| 350 | } else {
|
|---|
| 351 | printrec_bind($zonefiles, $recid, $revrec, $recflags, $zone, $host, 1, $val, $distance, $weight, $port, $ttl,
|
|---|
| 352 | $loc, $stamp, $expires, $stampactive);
|
|---|
| 353 | }
|
|---|
| 354 | } # A+PTR
|
|---|
| 355 |
|
|---|
| 356 | elsif ($type == 65282) { # PTR template
|
|---|
| 357 | # only useful for v4 with standard DNS software, since this expands all
|
|---|
| 358 | # IPs in $zone (or possibly $val?) with autogenerated records
|
|---|
| 359 | $val = NetAddr::IP->new($val);
|
|---|
| 360 | return if $val->{isv6};
|
|---|
| 361 |
|
|---|
| 362 | sub __publish_template_bind {
|
|---|
| 363 | my $sub = shift;
|
|---|
| 364 | my $recflags = shift;
|
|---|
| 365 | my $hpat = shift;
|
|---|
| 366 | my $fh = shift;
|
|---|
| 367 | my $ttl = shift;
|
|---|
| 368 | my $stamp = shift;
|
|---|
| 369 | my $loc = shift;
|
|---|
| 370 | my $zone = new NetAddr::IP shift;
|
|---|
| 371 | my $ptrflag = shift || 0; ##fixme: default to PTR instead of A record for the BIND variant of this sub?
|
|---|
| 372 |
|
|---|
| 373 | # do this conversion once, not (number-of-ips-in-subnet) times
|
|---|
| 374 | my $arpabase = _ZONE($zone, 'ZONE.in-addr.arpa', 'r', '.');
|
|---|
| 375 |
|
|---|
| 376 | my $iplist = $sub->splitref(32);
|
|---|
| 377 | my $ipindex = -1;
|
|---|
| 378 | foreach (@$iplist) {
|
|---|
| 379 | my $ip = $_->addr;
|
|---|
| 380 | $ipindex++;
|
|---|
| 381 | # make as if we split the non-octet-aligned block into octet-aligned blocks as with SOA
|
|---|
| 382 | my $lastoct = (split /\./, $ip)[3];
|
|---|
| 383 |
|
|---|
| 384 | # Allow smaller entries to override longer ones, eg, a specific PTR will
|
|---|
| 385 | # always publish, overriding any template record containing that IP.
|
|---|
| 386 | # %blank% also needs to be per-IP here to properly cascade overrides with
|
|---|
| 387 | # multiple nested templates
|
|---|
| 388 | next if $$recflags{$ip}; # && $self->{skip_bcast_255}
|
|---|
| 389 | $$recflags{$ip}++;
|
|---|
| 390 | next if $hpat eq '%blank%';
|
|---|
| 391 |
|
|---|
| 392 | my $rec = $hpat; # start fresh with the template for each IP
|
|---|
| 393 | ##fixme: there really isn't a good way to handle sub-/24 zones here. This way at least
|
|---|
| 394 | # seems less bad than some alternatives.
|
|---|
| 395 | $dnsdb->_template4_expand(\$rec, $ip, \$sub, $ipindex);
|
|---|
| 396 | # _template4_expand may blank $rec; if so, don't publish a record
|
|---|
| 397 | next if !$rec;
|
|---|
| 398 | ##fixme: trim merged record type voodoo. "if ($ptrflag) {} else {}" ?
|
|---|
| 399 | if ($ptrflag || $zone->masklen > 24) {
|
|---|
| 400 | # print $fh "^$lastoct.$arpabase:$rec:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 401 | print $fh "$lastoct.$arpabase $ttl IN PTR $rec\n" or die $!;
|
|---|
| 402 | if (!$ptrflag) {
|
|---|
| 403 | # print a separate A record. Arguably we could use an = record here instead.
|
|---|
| 404 | # print $fh "+$rec:$ip:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 405 | }
|
|---|
| 406 | } else {
|
|---|
| 407 | # A record, not merged
|
|---|
| 408 | # print $fh "=$rec:$ip:$ttl:$stamp:$loc\n" or die $!;
|
|---|
| 409 | print $fh "$rec $ttl IN A $ip\n" or die $!;
|
|---|
| 410 | }
|
|---|
| 411 | }
|
|---|
| 412 | } # __publish_subnet_bind()
|
|---|
| 413 |
|
|---|
| 414 | if ($val->masklen <= 16) {
|
|---|
| 415 | foreach my $sub ($val->split(16)) {
|
|---|
| 416 | __publish_subnet($sub, $recflags, $host, $zonefiles->{$loc}, $ttl, $stamp, $loc, $zone, 1);
|
|---|
| 417 | }
|
|---|
| 418 | } else {
|
|---|
| 419 | __publish_subnet($val, $recflags, $host, $zonefiles->{$loc}, $ttl, $stamp, $loc, $zone, 1);
|
|---|
| 420 | }
|
|---|
| 421 | } # PTR template
|
|---|
| 422 |
|
|---|
| 423 | elsif ($type == 65283) { # A+PTR template
|
|---|
| 424 | $val = NetAddr::IP->new($val);
|
|---|
| 425 | # Just In Case. An A+PTR should be impossible to add to a v6 revzone via API.
|
|---|
| 426 | return if $val->{isv6};
|
|---|
| 427 |
|
|---|
| 428 | if ($val->masklen < 16) {
|
|---|
| 429 | foreach my $sub ($val->split(16)) {
|
|---|
| 430 | $self->__publish_subnet($sub, $recflags, $host, $zonefiles->{$loc}, $ttl, $stamp, $loc, $zone, 0);
|
|---|
| 431 | }
|
|---|
| 432 | } else {
|
|---|
| 433 | $self->__publish_subnet($val, $recflags, $host, $zonefiles->{$loc}, $ttl, $stamp, $loc, $zone, 0);
|
|---|
| 434 | }
|
|---|
| 435 | } # A+PTR template
|
|---|
| 436 |
|
|---|
| 437 | elsif ($type == 65284) { # AAAA+PTR template
|
|---|
| 438 | # Stub for completeness. Could be exported to DNS software that supports
|
|---|
| 439 | # some degree of internal automagic in generic-record-creation
|
|---|
| 440 | # (eg http://search.cpan.org/dist/AllKnowingDNS/ )
|
|---|
| 441 | } # AAAA+PTR template
|
|---|
| 442 |
|
|---|
| 443 | } # printrec_bind()
|
|---|
| 444 |
|
|---|
| 445 |
|
|---|
| 446 | 1;
|
|---|
![[ DNS Administrator ]](/fx/dnsadmin-logo.png){kind=logo}
