[847] | 1 | # dns/trunk/DNSDB/ExportBIND.pm
|
---|
| 2 | # BIND data export/publication
|
---|
| 3 | # Call through DNSDB.pm's export() sub
|
---|
| 4 | ##
|
---|
| 5 | # $Id: ExportBIND.pm 869 2022-09-28 19:29:29Z 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
|
---|
[855] | 29 | my $dnsdb = shift;
|
---|
[847] | 30 |
|
---|
[849] | 31 | # to be a hash of views/locations, containing lists of zones
|
---|
| 32 | my %viewzones;
|
---|
| 33 |
|
---|
[848] | 34 | # allow for future exports of subgroups of records
|
---|
[855] | 35 | my $viewlist = $dnsdb->getLocList(curgroup => 1);
|
---|
[847] | 36 |
|
---|
[855] | 37 | my $soasth = $dnsdb->{dbh}->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
|
---|
[850] | 38 | "FROM records WHERE rdns_id=? AND type=6");
|
---|
[855] | 39 | my $recsth = $dnsdb->{dbh}->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ".
|
---|
[850] | 40 | "FROM records WHERE rdns_id=? AND NOT type=6 ".
|
---|
| 41 | "ORDER BY masklen(inetlazy(val)) DESC, inetlazy(val)");
|
---|
| 42 |
|
---|
[849] | 43 | # Fetch active zone list
|
---|
[855] | 44 | my $revsth = $dnsdb->{dbh}->prepare("SELECT rdns_id,revnet,status,changed,default_location FROM revzones WHERE status=1 ".
|
---|
[849] | 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
|
---|
[855] | 47 | my $zonesth = $dnsdb->{dbh}->prepare("UPDATE revzones SET changed='n' WHERE rdns_id=?");
|
---|
[849] | 48 | $revsth->execute();
|
---|
[865] | 49 |
|
---|
| 50 | my %recflags; # need this to be independent for forward vs reverse zones, as they're not merged
|
---|
| 51 |
|
---|
[849] | 52 | while (my ($revid,$revzone,$revstat,$changed,$defloc) = $revsth->fetchrow_array) {
|
---|
[856] | 53 | my $cidr = NetAddr::IP->new($revzone);
|
---|
| 54 | my $zfile = $cidr->network->addr."-".$cidr->masklen;
|
---|
[855] | 55 | # my $cachefile = "$dnsdb->{exportcache}/$zfile";
|
---|
| 56 | # my $tmpcache = "$dnsdb->{exportcache}/tmp.$zfile.$$";
|
---|
[850] | 57 | my $tmpcache = "tmp.$zfile.$$"; # 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
|
---|
[856] | 62 | ## foreach $octetzone $cidr->split(octet-boundary)
|
---|
| 63 | ## loclist = SELECT DISTINCT location FROM records WHERE rdns_id = $zid AND inetlazy(val) <<= $octetzone
|
---|
[850] | 64 |
|
---|
[856] | 65 | #printf "non-octet? %s, %i\n", $cidr->masklen, $cidr->masklen % 8;
|
---|
[850] | 66 |
|
---|
[856] | 67 |
|
---|
[851] | 68 | eval {
|
---|
| 69 |
|
---|
[859] | 70 | my $arpazone = DNSDB::_ZONE($cidr, 'ZONE', 'r', '.').($cidr->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
|
---|
| 71 |
|
---|
[851] | 72 | # write fresh records if:
|
---|
| 73 | # - we are not using the cache
|
---|
| 74 | # - force_refresh is set
|
---|
| 75 | # - the zone has changed
|
---|
| 76 | # - the cache file does not exist
|
---|
| 77 | # - the cache file is empty
|
---|
[855] | 78 | if (!$dnsdb->{usecache} || $dnsdb->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) {
|
---|
| 79 | if ($dnsdb->{usecache}) {
|
---|
[851] | 80 | open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n";
|
---|
| 81 | $zonefilehandle = *ZONECACHE;
|
---|
| 82 | }
|
---|
| 83 |
|
---|
[853] | 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
|
---|
[868] | 86 | # my (@loclist) = $dnsdb->{dbh}->selectrow_array("SELECT DISTINCT location FROM records WHERE rdns_id = ?", undef, $revid);
|
---|
| 87 | my $tmplocs = $dnsdb->{dbh}->selectall_arrayref("SELECT DISTINCT location FROM records WHERE rdns_id = ?", undef, $revid);
|
---|
| 88 | my @loclist;
|
---|
| 89 | foreach my $tloc (@{$tmplocs}) {
|
---|
| 90 | push @loclist, ($tloc->[0] eq '' ? 'common' : $tloc->[0]);
|
---|
| 91 | }
|
---|
| 92 |
|
---|
[853] | 93 | push @loclist, $defloc unless grep /$defloc/, @loclist;
|
---|
[868] | 94 | push @loclist, 'common' unless grep /^common$/, @loclist;
|
---|
[856] | 95 | my $zonepath = $dnsdb->{bind_export_reverse_zone_path};
|
---|
[859] | 96 | my %zonefiles; # to be a hash of file handles.
|
---|
[856] | 97 | ##fixme: need to open separate zone files for aggregated metazones eg /22 or /14
|
---|
[853] | 98 | foreach my $loc (@loclist) {
|
---|
| 99 | my $zfilepath = $zonepath;
|
---|
| 100 | $zfilepath =~ s/\%view/$loc/;
|
---|
| 101 | $zfilepath =~ s/\%zone/$revzone/;
|
---|
[856] | 102 | $zfilepath =~ s/\%arpazone/$arpazone/;
|
---|
[853] | 103 | # Just In Case(TM)
|
---|
| 104 | $zfilepath =~ s,[^\w./-],_,g;
|
---|
[859] | 105 | open $zonefiles{$loc}, ">", $zfilepath;
|
---|
[868] | 106 | printf {$zonefiles{$loc}} "; %s in view %s exported %s\n", $arpazone, $loc, scalar(localtime)
|
---|
| 107 | or die "Error writing SOA [$zone, '$loc']: $!\n";;
|
---|
[853] | 108 | }
|
---|
| 109 |
|
---|
[851] | 110 | # need to fetch this separately since the rest of the records all (should) have real IPs in val
|
---|
| 111 | $soasth->execute($revid);
|
---|
| 112 | my (@zsoa) = $soasth->fetchrow_array();
|
---|
[869] | 113 |
|
---|
[865] | 114 | ##fixme: do we even need @loclist passed in?
|
---|
[869] | 115 | publishrec_bind(\%zonefiles, \@loclist, $zsoa[7], 'y', \%recflags, $revzone,
|
---|
| 116 | $zsoa[0], $zsoa[1], $zsoa[2], $zsoa[3], $zsoa[4], $zsoa[5], $zsoa[6], $loc, '');
|
---|
[851] | 117 |
|
---|
| 118 | $recsth->execute($revid);
|
---|
| 119 | my $fullzone = _ZONE($tmpzone, 'ZONE', 'r', '.').($tmpzone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
|
---|
| 120 |
|
---|
| 121 | while (my ($host, $type, $val, $dist, $weight, $port, $ttl, $recid, $loc, $stamp, $expires, $stampactive)
|
---|
| 122 | = $recsth->fetchrow_array) {
|
---|
| 123 | next if $recflags{$recid};
|
---|
| 124 |
|
---|
| 125 | # Check for out-of-zone data
|
---|
| 126 | if ($val =~ /\.arpa$/) {
|
---|
| 127 | # val is non-IP
|
---|
| 128 | if ($val !~ /$fullzone$/) {
|
---|
| 129 | warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
|
---|
| 130 | next;
|
---|
| 131 | }
|
---|
| 132 | } else {
|
---|
| 133 | my $ipval = new NetAddr::IP $val;
|
---|
| 134 | if (!$tmpzone->contains($ipval)) {
|
---|
| 135 | warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
|
---|
| 136 | next;
|
---|
| 137 | }
|
---|
| 138 | } # is $val a raw .arpa name?
|
---|
| 139 |
|
---|
| 140 | # Spaces are evil.
|
---|
| 141 | $val =~ s/^\s+//;
|
---|
| 142 | $val =~ s/\s+$//;
|
---|
| 143 | if ($typemap{$type} ne 'TXT') {
|
---|
| 144 | # Leading or trailng spaces could be legit in TXT records.
|
---|
| 145 | $host =~ s/^\s+//;
|
---|
| 146 | $host =~ s/\s+$//;
|
---|
| 147 | }
|
---|
| 148 |
|
---|
[869] | 149 | publishrec_bind(\%zonefiles, \@loclist, $recid, 'y', \%recflags, $revzone,
|
---|
[851] | 150 | $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
|
---|
| 151 |
|
---|
| 152 | $recflags{$recid} = 1;
|
---|
| 153 |
|
---|
| 154 | } # while ($recsth)
|
---|
| 155 |
|
---|
[855] | 156 | if ($dnsdb->{usecache}) {
|
---|
[851] | 157 | close ZONECACHE; # force the file to be written
|
---|
| 158 | # catch obvious write errors that leave an empty temp file
|
---|
| 159 | if (-s $tmpcache) {
|
---|
| 160 | rename $tmpcache, $cachefile
|
---|
| 161 | or die "Error overwriting cache file $cachefile with temporary file: $!\n";
|
---|
| 162 | }
|
---|
| 163 | }
|
---|
| 164 |
|
---|
| 165 | } # if $changed or cache filesize is 0
|
---|
| 166 |
|
---|
| 167 | };
|
---|
| 168 | if ($@) {
|
---|
[855] | 169 | die "error writing ".($dnsdb->{usecache} ? 'new data for ' : '')."$revzone: $@\n";
|
---|
[851] | 170 | # error! something borked, and we should be able to fall back on the old cache file
|
---|
| 171 | # report the error, somehow.
|
---|
| 172 | } else {
|
---|
| 173 | # mark zone as unmodified. Only do this if no errors, that way
|
---|
| 174 | # export failures should recover a little more automatically.
|
---|
| 175 | $zonesth->execute($revid);
|
---|
| 176 | }
|
---|
| 177 |
|
---|
[855] | 178 | # if ($dnsdb->{usecache}) {
|
---|
[851] | 179 | # # We've already made as sure as we can that a cached zone file is "good",
|
---|
| 180 | # # although possibly stale/obsolete due to errors creating a new one.
|
---|
| 181 | # eval {
|
---|
| 182 | # open CACHE, "<$cachefile" or die $!;
|
---|
| 183 | # print $datafile $_ or die "error copying cached $revzone to master file: $!" while <CACHE>;
|
---|
| 184 | # close CACHE;
|
---|
| 185 | # };
|
---|
| 186 | # die $@ if $@;
|
---|
| 187 | # }
|
---|
| 188 |
|
---|
| 189 |
|
---|
| 190 |
|
---|
[849] | 191 | } # revsth->fetch
|
---|
| 192 |
|
---|
| 193 |
|
---|
| 194 | # Write the view configuration last, because otherwise we have to be horribly inefficient
|
---|
| 195 | # at figuring out which zones are visible/present in which views
|
---|
[848] | 196 | if ($viewlist) {
|
---|
[857] | 197 | my $tmpconf = "$dnsdb->{bind_zone_conf}.$$"; ##fixme: split filename for prefixing
|
---|
| 198 | open BINDCONF, ">", $tmpconf;
|
---|
| 199 |
|
---|
[848] | 200 | foreach my $view (@{$viewlist}) {
|
---|
| 201 | #print Dumper($view);
|
---|
[857] | 202 | print BINDCONF "view $view->{location} {\n";
|
---|
| 203 | # print "view $view->{location} {\n";
|
---|
[848] | 204 | # could also use an acl { ... }; statement, then match-clients { aclname; };, but that gets hairy
|
---|
| 205 | # note that some semantics of data visibility need to be handled by the record export, since it's
|
---|
| 206 | # not 100% clear if the semantics of a tinydns view with an empty IP list (matches anyone) are the
|
---|
| 207 | # same as a BIND view with match-clients { any; };
|
---|
| 208 | if ($view->{iplist}) {
|
---|
[857] | 209 | print BINDCONF " match-clients { ".join("; ", $view->iplist)."; };\n";
|
---|
| 210 | # print " match-clients { ".join("; ", split(/[\s,]+/, $view->{iplist}))."; };\n";
|
---|
[848] | 211 | } else {
|
---|
[857] | 212 | print BINDCONF " match-clients { any; };\n";
|
---|
| 213 | # print " match-clients { any; };\n";
|
---|
[848] | 214 | }
|
---|
[849] | 215 | foreach my $zone (@{$viewzones{$view->{location}}}) {
|
---|
| 216 | ##fixme: notify settings, maybe per-zone?
|
---|
| 217 | print qq( zone "$zone" IN {\n\ttype master;\n\tnotify no;\n\tfile "db.$zone";\n };\n);
|
---|
| 218 | }
|
---|
[848] | 219 | print "};\n\n";
|
---|
| 220 | } # foreach @$viewlist
|
---|
[857] | 221 | rename $tmpconf, $dnsdb->{bind_zone_conf};
|
---|
[848] | 222 | } # if $viewlist
|
---|
| 223 |
|
---|
| 224 | } # export()
|
---|
| 225 |
|
---|
[854] | 226 |
|
---|
| 227 | # Print individual records in BIND format
|
---|
[869] | 228 | sub publishrec_bind {
|
---|
[855] | 229 | my $dnsdb = shift;
|
---|
[865] | 230 |
|
---|
| 231 | # my ($zonefiles, $recid, $revrec, $loclist, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
---|
[868] | 232 | my ($zonefiles, $loclist, $recid, $revrec, $recflags, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
---|
[855] | 233 | $loc, $stamp, $expires, $stampactive) = @_;
|
---|
[854] | 234 |
|
---|
[868] | 235 | # make sure "global" records get into all the right per-view zone files, without having to do this loop in each record-print location
|
---|
| 236 | ##fixme: maybe exclude the template types? those may be more expensive to export
|
---|
| 237 | ## *ponder* may be more efficient to loop in each record print due to substitution and manipulation from stored data to formal
|
---|
| 238 | ## record for .arpa zones for all records
|
---|
| 239 | if ($loc eq '') {
|
---|
| 240 | foreach my $subloc (@{$loclist}) {
|
---|
[869] | 241 | publishrec_bind($zonefiles, $loclist, $recid, $revrec, $recflags, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
---|
[868] | 242 | $subloc, $stamp, $expires, $stampactive);
|
---|
| 243 | }
|
---|
| 244 | }
|
---|
| 245 |
|
---|
[854] | 246 | # Just In Case something is lingering in the DB
|
---|
[855] | 247 | $loc = '' if !$loc;
|
---|
[854] | 248 |
|
---|
| 249 | ## And now to the records!
|
---|
| 250 |
|
---|
| 251 | if ($typemap{$type} eq 'SOA') {
|
---|
| 252 | # host contains pri-ns:responsible
|
---|
| 253 | # val is abused to contain refresh:retry:expire:minttl
|
---|
| 254 | # let's be explicit about abusing $host and $val
|
---|
| 255 | my ($email, $primary) = (split /:/, $host)[0,1];
|
---|
| 256 | my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3];
|
---|
| 257 | my $serial = 0; # fail less horribly than leaving it empty?
|
---|
[858] | 258 | # just snarfing the right SOA serial for the zone type
|
---|
[854] | 259 | if ($revrec eq 'y') {
|
---|
[855] | 260 | ($serial) = $dnsdb->{dbh}->selectrow_array("SELECT zserial FROM revzones WHERE revnet=?", undef, $zone);
|
---|
[854] | 261 | } else {
|
---|
[855] | 262 | ($serial) = $dnsdb->{dbh}->selectrow_array("SELECT zserial FROM domains WHERE domain=?", undef, $zone);
|
---|
[854] | 263 | } # revrec <> 'y'
|
---|
| 264 | # suppress a "uninitialized value" warning. should be impossible but...
|
---|
| 265 | # abuse hours as the last digit pair of the serial for simplicity
|
---|
[858] | 266 | ##fixme?: alternate SOA serial schemes?
|
---|
[854] | 267 | $serial = strftime("%Y%m%d%H", localtime()) if !$serial;
|
---|
[859] | 268 | $primary .= "." if $primary !~ /\.$/;
|
---|
| 269 | $email .= "." if $email !~ /\.$/;
|
---|
[855] | 270 | # print *{$zonefiles->{$loc}} "Z$zone:$primary:$email:$serial:$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n"
|
---|
| 271 | # or die $!;
|
---|
[869] | 272 | # print *{$zonefiles->{$loc}} "$zone $ttl IN SOA $primary $email ( $serial $refresh $retry $expire $min_ttl )\n"
|
---|
| 273 | # or die "couldn't write $zone SOA: $!";
|
---|
| 274 | my $recdata = "$zone $ttl IN SOA $primary $email ( $serial $refresh $retry $expire $min_ttl )\n";
|
---|
| 275 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[854] | 276 | } # SOA
|
---|
| 277 |
|
---|
[861] | 278 | elsif ($typemap{$type} eq 'A') {
|
---|
| 279 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
| 280 | # print $datafile "+$host:$val:$ttl:$stamp:$loc\n" or die $!;
|
---|
[869] | 281 | # print {$zonefiles->{$loc}} "$host $ttl IN A $val\n" or die $!;
|
---|
| 282 | my $recdata = "$host $ttl IN A $val\n";
|
---|
| 283 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 284 | } # A
|
---|
| 285 |
|
---|
[860] | 286 | elsif ($typemap{$type} eq 'NS') {
|
---|
| 287 | if ($revrec eq 'y') {
|
---|
| 288 | $val = NetAddr::IP->new($val);
|
---|
| 289 |
|
---|
| 290 | ##fixme: conversion for sub-/24 delegations in reverse zones?
|
---|
| 291 | # if (!$val->{isv6} && ($val->masklen > 24)) {
|
---|
| 292 | # }
|
---|
| 293 |
|
---|
| 294 | # print {$zonefiles->{$loc}} "$zone $ttl IN NS $host\n";
|
---|
[869] | 295 | # print "$zone $ttl IN NS $host\n" or die $!;
|
---|
| 296 | my $recdata = "$zone $ttl IN NS $host\n";
|
---|
| 297 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[860] | 298 |
|
---|
| 299 | } else {
|
---|
| 300 | # print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n" or die $!;
|
---|
| 301 | }
|
---|
| 302 | } # NS
|
---|
| 303 |
|
---|
[861] | 304 | elsif ($typemap{$type} eq 'AAAA') {
|
---|
| 305 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
[869] | 306 | # print {$zonefiles->{$loc}} "$host $ttl IN AAAA $val\n" or die $!;
|
---|
| 307 | my $recdata = "$host $ttl IN AAAA $val\n";
|
---|
| 308 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 309 | } # AAAA
|
---|
[860] | 310 |
|
---|
[861] | 311 | elsif ($typemap{$type} eq 'TXT') {
|
---|
| 312 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
[869] | 313 | # print {$zonefiles->{$loc}} "$host $ttl IN TXT \"$val\"\n" or die $!;
|
---|
| 314 | my $recdata = "$host $ttl IN TXT \"$val\"\n";
|
---|
| 315 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 316 | } # TXT
|
---|
| 317 |
|
---|
| 318 | elsif ($typemap{$type} eq 'CNAME') {
|
---|
| 319 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
[869] | 320 | # print {$zonefiles->{$loc}} "$host $ttl IN CNAME $val\n" or die $!;
|
---|
| 321 | my $recdata = "$host $ttl IN CNAME $val\n";
|
---|
| 322 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 323 | } # CNAME
|
---|
| 324 |
|
---|
| 325 | elsif ($typemap{$type} eq 'SRV') {
|
---|
| 326 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
[869] | 327 | # print {$zonefiles->{$loc}} "$host $ttl IN SRV $distance $weight $port $val\n" or die $!;
|
---|
| 328 | my $recdata = "$host $ttl IN SRV $distance $weight $port $val\n";
|
---|
| 329 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 330 | } # SRV
|
---|
| 331 |
|
---|
| 332 | elsif ($typemap{$type} eq 'RP') {
|
---|
| 333 | # ($host,$val) = __revswap($host,$val) if $revrec eq 'y';
|
---|
[869] | 334 | # print {$zonefiles->{$loc}} "$host $ttl IN RP $val\n" or die $!;
|
---|
| 335 | my $recdata = "$host $ttl IN RP $val\n";
|
---|
| 336 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 337 | } # RP
|
---|
| 338 |
|
---|
| 339 |
|
---|
| 340 | elsif ($typemap{$type} eq 'PTR') {
|
---|
[864] | 341 | $$recflags{$val}++;
|
---|
[861] | 342 | if ($revrec eq 'y') {
|
---|
| 343 |
|
---|
| 344 | if ($val =~ /\.arpa$/) {
|
---|
| 345 | # someone put in the formal .arpa name. humor them.
|
---|
[869] | 346 | # print {$zonefiles->{$loc}} "$val $ttl IN PTR $host\n" or die $!;
|
---|
| 347 | my $recdata = "$val $ttl IN PTR $host\n";
|
---|
| 348 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 349 | } else {
|
---|
| 350 | $zone = NetAddr::IP->new($zone);
|
---|
| 351 | if (!$zone->{isv6} && $zone->masklen > 24) {
|
---|
| 352 | # sub-octet v4 zone
|
---|
| 353 | ($val) = ($val =~ /\.(\d+)$/);
|
---|
[869] | 354 | # print {$zonefiles->{$loc}} "$val.".DNSDB::_ZONE($zone, 'ZONE', 'r', '.').'.in-addr.arpa'.
|
---|
| 355 | # " $ttl IN PTR $host\n"
|
---|
| 356 | # or die $!;
|
---|
| 357 | my $recdata = "$val.".DNSDB::_ZONE($zone, 'ZONE', 'r', '.').".in-addr.arpa $ttl IN PTR $host\n";
|
---|
| 358 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 359 | } else {
|
---|
| 360 | # not going to care about strange results if $val is not an IP value and is resolveable in DNS
|
---|
| 361 | $val = NetAddr::IP->new($val);
|
---|
[869] | 362 | # print {$zonefiles->{$loc}} DNSDB::_ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
|
---|
| 363 | # " $ttl IN PTR $host\n"
|
---|
| 364 | # or die $!;
|
---|
| 365 | my $recdata = DNSDB::_ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
|
---|
| 366 | " $ttl IN PTR $host\n";
|
---|
| 367 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 368 | }
|
---|
| 369 | } # non-".arpa" $val
|
---|
| 370 |
|
---|
| 371 | } else {
|
---|
| 372 | # PTRs in forward zones are less bizarre and insane than some other record types
|
---|
| 373 | # in reverse zones... OTOH we can't validate them any which way, so we cross our
|
---|
| 374 | # fingers and close our eyes and make it Someone Else's Problem.
|
---|
[869] | 375 | # print {$zonefiles->{$loc}} "$host $ttl IN PTR $val\n" or die $!;
|
---|
| 376 | my $recdata = "$host $ttl IN PTR $val\n";
|
---|
| 377 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
[861] | 378 | }
|
---|
| 379 | } # PTR
|
---|
| 380 |
|
---|
[863] | 381 | elsif ($type == 65280) { # A+PTR
|
---|
| 382 | # Recurse to PTR or A as appropriate because BIND et al don't share
|
---|
| 383 | # the tinydns concept of merged forward/reverse records
|
---|
[864] | 384 | $$recflags{$val}++;
|
---|
[863] | 385 | if ($revrec eq 'y') {
|
---|
[869] | 386 | publishrec_bind($zonefiles, $loclist, $recid, $revrec, $recflags, $zone, $host, 12, $val, $distance, $weight, $port, $ttl,
|
---|
[863] | 387 | $loc, $stamp, $expires, $stampactive);
|
---|
| 388 | #print {$zonefiles->{$loc}} "=$host:$val:$ttl:$stamp:$loc\n" or die $!;
|
---|
[869] | 389 | # publishrec_bind(\%zonefiles, $recid, 'y', \@loclist, $revzone,
|
---|
[863] | 390 | # $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
|
---|
| 391 | # my ($zonefiles, $recid, $revrec, $loclist, $zone, $host, $type, $val, $distance, $weight, $port, $ttl,
|
---|
| 392 | # $loc, $stamp, $expires, $stampactive) = @_;
|
---|
| 393 | } else {
|
---|
[869] | 394 | publishrec_bind($zonefiles, $loclist, $recid, $revrec, $recflags, $zone, $host, 1, $val, $distance, $weight, $port, $ttl,
|
---|
[863] | 395 | $loc, $stamp, $expires, $stampactive);
|
---|
| 396 | }
|
---|
| 397 | } # A+PTR
|
---|
| 398 |
|
---|
[864] | 399 | elsif ($type == 65282) { # PTR template
|
---|
| 400 | # only useful for v4 with standard DNS software, since this expands all
|
---|
| 401 | # IPs in $zone (or possibly $val?) with autogenerated records
|
---|
| 402 | $val = NetAddr::IP->new($val);
|
---|
| 403 | return if $val->{isv6};
|
---|
| 404 |
|
---|
[866] | 405 | if ($val->masklen <= 16) {
|
---|
| 406 | foreach my $sub ($val->split(16)) {
|
---|
[869] | 407 | __publish_template_bind($sub, $recflags, $host, $zonefiles, $loclist, $ttl, $stamp, $loc, $zone, $revrec);
|
---|
[866] | 408 | }
|
---|
| 409 | } else {
|
---|
[869] | 410 | __publish_template_bind($sub, $recflags, $host, $zonefiles, $loclist, $ttl, $stamp, $loc, $zone, $revrec);
|
---|
[866] | 411 | }
|
---|
| 412 | } # PTR template
|
---|
| 413 |
|
---|
| 414 | elsif ($type == 65283) { # A+PTR template
|
---|
| 415 | $val = NetAddr::IP->new($val);
|
---|
| 416 | # Just In Case. An A+PTR should be impossible to add to a v6 revzone via API.
|
---|
| 417 | return if $val->{isv6};
|
---|
| 418 |
|
---|
| 419 | if ($val->masklen < 16) {
|
---|
| 420 | foreach my $sub ($val->split(16)) {
|
---|
[869] | 421 | __publish_template_bind($sub, $recflags, $host, $zonefiles, $loclist, $ttl, $stamp, $loc, $zone, $revrec);
|
---|
[866] | 422 | }
|
---|
| 423 | } else {
|
---|
[869] | 424 | __publish_template_bind($sub, $recflags, $host, $zonefiles, $loclist, $ttl, $stamp, $loc, $zone, $revrec);
|
---|
[866] | 425 | }
|
---|
| 426 | } # A+PTR template
|
---|
| 427 |
|
---|
| 428 | elsif ($type == 65284) { # AAAA+PTR template
|
---|
| 429 | # Stub for completeness. Could be exported to DNS software that supports
|
---|
| 430 | # some degree of internal automagic in generic-record-creation
|
---|
| 431 | # (eg http://search.cpan.org/dist/AllKnowingDNS/ )
|
---|
| 432 | } # AAAA+PTR template
|
---|
| 433 |
|
---|
[869] | 434 | } # publishrec_bind()
|
---|
[866] | 435 |
|
---|
| 436 |
|
---|
[864] | 437 | sub __publish_template_bind {
|
---|
| 438 | my $sub = shift;
|
---|
| 439 | my $recflags = shift;
|
---|
| 440 | my $hpat = shift;
|
---|
[869] | 441 | my $zonefiles = shift;
|
---|
| 442 | my $loclist = shift;
|
---|
[864] | 443 | my $ttl = shift;
|
---|
| 444 | my $stamp = shift;
|
---|
| 445 | my $loc = shift;
|
---|
| 446 | my $zone = new NetAddr::IP shift;
|
---|
[867] | 447 | my $revrec = shift || 'y';
|
---|
| 448 | # my $ptrflag = shift || 0; ##fixme: default to PTR instead of A record for the BIND variant of this sub?
|
---|
[864] | 449 |
|
---|
| 450 | # do this conversion once, not (number-of-ips-in-subnet) times
|
---|
[867] | 451 | my $arpabase = DNSDB::_ZONE($zone, 'ZONE.in-addr.arpa', 'r', '.');
|
---|
[864] | 452 |
|
---|
| 453 | my $iplist = $sub->splitref(32);
|
---|
| 454 | my $ipindex = -1;
|
---|
| 455 | foreach (@$iplist) {
|
---|
| 456 | my $ip = $_->addr;
|
---|
| 457 | $ipindex++;
|
---|
| 458 | # make as if we split the non-octet-aligned block into octet-aligned blocks as with SOA
|
---|
| 459 | my $lastoct = (split /\./, $ip)[3];
|
---|
| 460 |
|
---|
| 461 | # Allow smaller entries to override longer ones, eg, a specific PTR will
|
---|
| 462 | # always publish, overriding any template record containing that IP.
|
---|
| 463 | # %blank% also needs to be per-IP here to properly cascade overrides with
|
---|
| 464 | # multiple nested templates
|
---|
| 465 | next if $$recflags{$ip}; # && $self->{skip_bcast_255}
|
---|
| 466 | $$recflags{$ip}++;
|
---|
| 467 | next if $hpat eq '%blank%';
|
---|
| 468 |
|
---|
| 469 | my $rec = $hpat; # start fresh with the template for each IP
|
---|
| 470 | ##fixme: there really isn't a good way to handle sub-/24 zones here. This way at least
|
---|
| 471 | # seems less bad than some alternatives.
|
---|
| 472 | $dnsdb->_template4_expand(\$rec, $ip, \$sub, $ipindex);
|
---|
| 473 | # _template4_expand may blank $rec; if so, don't publish a record
|
---|
| 474 | next if !$rec;
|
---|
| 475 | ##fixme: trim merged record type voodoo. "if ($ptrflag) {} else {}" ?
|
---|
[867] | 476 | # if ($ptrflag || $zone->masklen > 24) {
|
---|
[869] | 477 | my $recdata;
|
---|
| 478 | if ($revrec eq 'y') {
|
---|
| 479 | # || $zone->masklen > 24) {
|
---|
[864] | 480 | # print $fh "^$lastoct.$arpabase:$rec:$ttl:$stamp:$loc\n" or die $!;
|
---|
[867] | 481 | ##fixme: use $ORIGIN instead? make the FQDN output switchable-optional?
|
---|
[869] | 482 | # print $fh "$lastoct.$arpabase $ttl IN PTR $rec\n" or die $!;
|
---|
| 483 | # if ($revrec ne 'y') {
|
---|
[864] | 484 | # print a separate A record. Arguably we could use an = record here instead.
|
---|
| 485 | # print $fh "+$rec:$ip:$ttl:$stamp:$loc\n" or die $!;
|
---|
[869] | 486 | # print $fh "$rec $ttl IN A $ip\n" or die $!;
|
---|
| 487 | # }
|
---|
| 488 | $recdata = "$lastoct.$arpabase $ttl IN PTR $rec\n";
|
---|
[864] | 489 | } else {
|
---|
| 490 | # A record, not merged
|
---|
| 491 | # print $fh "=$rec:$ip:$ttl:$stamp:$loc\n" or die $!;
|
---|
[869] | 492 | # print $fh "$rec $ttl IN A $ip\n" or die $!;
|
---|
| 493 | $recdata = "$rec $ttl IN A $ip\n";
|
---|
[864] | 494 | }
|
---|
[869] | 495 | # and finally
|
---|
| 496 | recprint($zonefiles, $loclist, $loc, $recdata);
|
---|
| 497 | } # foreach (@iplist)
|
---|
[866] | 498 | } # __publish_template_bind()
|
---|
[864] | 499 |
|
---|
[869] | 500 |
|
---|
| 501 | # actual record printing sub
|
---|
| 502 | # loop on the locations here so we don't end up with a huge pot of copypasta
|
---|
| 503 | sub recprint {
|
---|
| 504 | my ($zonefiles, $loclist, $loc, $recdata) = @_;
|
---|
| 505 | if ($loc eq '') {
|
---|
| 506 | # "common" record visible in all locations
|
---|
| 507 | foreach my $rloc (@{$loclist}) {
|
---|
| 508 | print {$zonefiles->{$rloc}} $recdata or die $!;
|
---|
| 509 | }
|
---|
| 510 | } else {
|
---|
| 511 | # record with specific location tagged
|
---|
| 512 | print {$zonefiles->{$loc}} $recdata or die $!;
|
---|
| 513 | }
|
---|
| 514 | }
|
---|
| 515 |
|
---|
[847] | 516 | 1;
|
---|