| 1 | #!/usr/bin/perl
|
|---|
| 2 | # Import a BIND zone file
|
|---|
| 3 | # Note we are not using Net:DNS::ZoneFile, because we want to convert $GENERATE
|
|---|
| 4 | # directives straight into PTR template or A+PTR template metarecords
|
|---|
| 5 | ##
|
|---|
| 6 | # Copyright 2020 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 | use strict;
|
|---|
| 23 | use warnings;
|
|---|
| 24 | use Getopt::Long;
|
|---|
| 25 |
|
|---|
| 26 | use Data::Dumper;
|
|---|
| 27 |
|
|---|
| 28 | ##fixme
|
|---|
| 29 | use lib '.';
|
|---|
| 30 | use DNSDB;
|
|---|
| 31 |
|
|---|
| 32 | my $dnsdb = new DNSDB;
|
|---|
| 33 | my $doimport = 1;
|
|---|
| 34 |
|
|---|
| 35 | #print Dumper(\%reverse_typemap);
|
|---|
| 36 |
|
|---|
| 37 | local $dnsdb->{dbh}->{AutoCommit} = 0;
|
|---|
| 38 | local $dnsdb->{dbh}->{RaiseError} = 1;
|
|---|
| 39 |
|
|---|
| 40 | # from tiny-import: arguably can't use -r, -c is irrelevant. others useful?
|
|---|
| 41 | # -r rewrite imported files to comment imported records
|
|---|
| 42 | # -c coerce/downconvert A+PTR = records to PTR
|
|---|
| 43 | # -l swallow A+PTR as-is
|
|---|
| 44 | # -m merge PTR and A/AAAA as possible
|
|---|
| 45 | # -t trial mode; don't commit to DB or actually rewrite flatfile (disables -r)
|
|---|
| 46 | # -g import to specified group (name or ID) instead of group 1
|
|---|
| 47 |
|
|---|
| 48 | ##fixme: command arguments/flags to set these to alternate values
|
|---|
| 49 | my $group = 1;
|
|---|
| 50 | my $status = 1;
|
|---|
| 51 | my $location = '';
|
|---|
| 52 | # we'll update this with the actual serial number from the SOA record later
|
|---|
| 53 | my $serial = time();
|
|---|
| 54 |
|
|---|
| 55 | my @skipdefs;
|
|---|
| 56 | my $skipfile;
|
|---|
| 57 |
|
|---|
| 58 | GetOptions(
|
|---|
| 59 | "skip=s" => \@skipdefs,
|
|---|
| 60 | "skipfile=s" => \$skipfile,
|
|---|
| 61 | "test|dry-run" => sub { $doimport = 0; },
|
|---|
| 62 | );
|
|---|
| 63 |
|
|---|
| 64 | my $usage = "usage: bind-import [--skip pattern [--skip pattern2 ...]] [--skipfile file]
|
|---|
| 65 | zonename [zonefile]
|
|---|
| 66 | --skip
|
|---|
| 67 | Specify a string to skip in the records. If an IP-like string is
|
|---|
| 68 | used, and the zone is a reverse zone, it will also search for the
|
|---|
| 69 | octet-reversed form. Specify multiple times to skip multiple
|
|---|
| 70 | different record patterns.
|
|---|
| 71 | --skipfile
|
|---|
| 72 | A file containing patterns to skip. Patterns from the file and
|
|---|
| 73 | any --skip arguments are merged.
|
|---|
| 74 | zonename
|
|---|
| 75 | The name of the zone to import. Required.
|
|---|
| 76 | zonefile
|
|---|
| 77 | Specify the zone file as an argument. If not specified, the zone
|
|---|
| 78 | data will be read from STDIN.
|
|---|
| 79 | ";
|
|---|
| 80 |
|
|---|
| 81 | my $zname = shift @ARGV;
|
|---|
| 82 | my $origzone = $zname;
|
|---|
| 83 | die $usage if !$zname;
|
|---|
| 84 |
|
|---|
| 85 | my $zonefile = shift @ARGV;
|
|---|
| 86 | if(!$zonefile) {
|
|---|
| 87 | $zonefile = '&STDIN';
|
|---|
| 88 | }
|
|---|
| 89 |
|
|---|
| 90 | my $rev = 'n';
|
|---|
| 91 | my $zid;
|
|---|
| 92 | my %foundtypes;
|
|---|
| 93 |
|
|---|
| 94 | if ($skipfile) {
|
|---|
| 95 | if (-f $skipfile) {
|
|---|
| 96 | open SKIP, "<$skipfile";
|
|---|
| 97 | while (<SKIP>) {
|
|---|
| 98 | push @skipdefs, $_;
|
|---|
| 99 | }
|
|---|
| 100 | } else {
|
|---|
| 101 | warn "skipfile $skipfile requested but it doesn't seem to exist. Continuing.\n";
|
|---|
| 102 | }
|
|---|
| 103 | }
|
|---|
| 104 |
|
|---|
| 105 | #sub setreplace {
|
|---|
| 106 | ## print "dbg1: $_[0]\ndbg2: $_[1]\n";
|
|---|
| 107 | ##($_[1] eq '' ? $replace = 1 : $replace = $_[1]);
|
|---|
| 108 | # if ($_[1] eq '') {
|
|---|
| 109 | # print "no arg value, setting 1\n";
|
|---|
| 110 | # $replace = 1;
|
|---|
| 111 | # } else {
|
|---|
| 112 | # print "arg value $_[1]\n";
|
|---|
| 113 | # $replace = $_[1];
|
|---|
| 114 | # }
|
|---|
| 115 | #}
|
|---|
| 116 |
|
|---|
| 117 |
|
|---|
| 118 | my %amap;
|
|---|
| 119 | my %namemap;
|
|---|
| 120 | my %cmap;
|
|---|
| 121 |
|
|---|
| 122 | # wrap all the DB stuff in eval{}, so the entire thing either succeeds or fails.
|
|---|
| 123 |
|
|---|
| 124 | eval {
|
|---|
| 125 |
|
|---|
| 126 | local $dnsdb->{dbh}->{AutoCommit} = 0;
|
|---|
| 127 | local $dnsdb->{dbh}->{RaiseError} = 1;
|
|---|
| 128 |
|
|---|
| 129 | ##fixme: this is wrong, BIND zone files are generally complete and we're adding. merging records is an entire fridge full of worms.
|
|---|
| 130 | ##fixme: for import, should arguably check for zone *non*existence
|
|---|
| 131 | if ($zname =~ /\.arpa\.?$/ || $zname =~ m,^[\d./]+$,) {
|
|---|
| 132 | $rev = 'y';
|
|---|
| 133 | $zname = _zone2cidr($zname) if $zname =~ /\.arpa\.?$/;
|
|---|
| 134 | $zid = $dnsdb->revID($zname,':ANY:');
|
|---|
| 135 | if ($zid) {
|
|---|
| 136 | die "zone $origzone already present, not merging records\n";
|
|---|
| 137 | $zname = new NetAddr::IP $zname;
|
|---|
| 138 | $zname = DNSDB::_ZONE($zname, 'ZONE', 'r', '.').($zname->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
|
|---|
| 139 | }
|
|---|
| 140 | $zid = $dnsdb->{dbh}->do("INSERT INTO revzones (revnet,group_id,status,default_location,zserial) VALUES (?,?,?,?,?) RETURNING rnds_id",
|
|---|
| 141 | undef, ($zname, $group, $status, $location, $serial));
|
|---|
| 142 |
|
|---|
| 143 | } else {
|
|---|
| 144 | print "dbg: forward zone\n";
|
|---|
| 145 | $zid = $dnsdb->domainID($zname,':ANY:');
|
|---|
| 146 | if ($zid) {
|
|---|
| 147 | # die "zone $origzone already present, not merging records\n";
|
|---|
| 148 | print "dbg: skip add domain\n";
|
|---|
| 149 | }
|
|---|
| 150 | else {
|
|---|
| 151 | $zid = $dnsdb->{dbh}->do("INSERT INTO domains (domain,group_id,status,default_location,zserial) VALUES (?,?,?,?,?) RETURNING domain_id",
|
|---|
| 152 | undef, ($zname, $group, $status, $location, $serial));
|
|---|
| 153 | }
|
|---|
| 154 |
|
|---|
| 155 | }
|
|---|
| 156 |
|
|---|
| 157 | die "error creating zone stub for $zname: ".$dnsdb->{dbh}->errstr if !$zid;
|
|---|
| 158 |
|
|---|
| 159 |
|
|---|
| 160 | ##fixme: should probably make this a named argument so it doesn't get confused with the zone filename
|
|---|
| 161 | # still no sane way to expose a human-friendly view tag on the command line.
|
|---|
| 162 | my $view = shift @ARGV;
|
|---|
| 163 | $view = '' if !$view;
|
|---|
| 164 |
|
|---|
| 165 | ##fixme: retrieve defttl from SOA record
|
|---|
| 166 | my $zonettl = 900;
|
|---|
| 167 | my $defttl = $zonettl;
|
|---|
| 168 | my $origin = "$zname."; # to append to unqualified names
|
|---|
| 169 |
|
|---|
| 170 | # need to spin up a full state machine-ish thing, because BIND zone files are all about context
|
|---|
| 171 | # see ch4, p56-72 in the grasshopper book
|
|---|
| 172 | my $prevlabel = '';
|
|---|
| 173 | my $curlabel = '';
|
|---|
| 174 |
|
|---|
| 175 | my $i = 0;
|
|---|
| 176 |
|
|---|
| 177 | open ZONEDATA, "<$zonefile";
|
|---|
| 178 |
|
|---|
| 179 | while (my $rec = <ZONEDATA>) {
|
|---|
| 180 | chomp $rec;
|
|---|
| 181 | next if $rec =~ /^\s*$/;
|
|---|
| 182 | next if $rec =~ /^\s*;/; # comments
|
|---|
| 183 | next if $rec =~ /^\s*\)/; # SOA closing (possibly other records too?)
|
|---|
| 184 | # arguably should do some more targeted voodoo when parsing the SOA details
|
|---|
| 185 |
|
|---|
| 186 | ##fixme: use external skiplist
|
|---|
| 187 | # skip stale records that have no value
|
|---|
| 188 | next if /^ip-192-168-1(12|20)-\d+/;
|
|---|
| 189 | next if /ip.add.re.\d+\s*$/;
|
|---|
| 190 |
|
|---|
| 191 | $i++;
|
|---|
| 192 | last if $i > 7;
|
|---|
| 193 | #print "line $i: ($rec)\n";
|
|---|
| 194 | if (my ($macro,$mdetail) = ($rec =~ /^\s*\$(TTL|ORIGIN|INCLUDE|GENERATE)\s+(.+)/) ) {
|
|---|
| 195 | # macro sort of thing; $TTL and $ORIGIN most common. $INCLUDE is a thing, expect it to be rare in live use tho
|
|---|
| 196 | if ($macro eq 'TTL') {
|
|---|
| 197 | $mdetail =~ s/\s*;.+$//;
|
|---|
| 198 | if ($mdetail =~ /^\d+$/) {
|
|---|
| 199 | $defttl = $mdetail;
|
|---|
| 200 | } else {
|
|---|
| 201 | warn "invalid \$TTL: $rec\n";
|
|---|
| 202 | }
|
|---|
| 203 | } elsif ($macro eq 'ORIGIN') {
|
|---|
| 204 | ##fixme: going to skip the stupid case of "$ORIGIN com." and the like that lie
|
|---|
| 205 | # between . and the root domain we were told we're importing; anyone using such
|
|---|
| 206 | # a mess outside the root servers is clearly insane
|
|---|
| 207 |
|
|---|
| 208 | # $ORIGIN supports cascading/nesting, by watching for fully-qualified names vs partial names.
|
|---|
| 209 |
|
|---|
| 210 | print "origin ($mdetail)\n";
|
|---|
| 211 | if ($mdetail =~ /\.$/) {
|
|---|
| 212 | $origin = $mdetail;
|
|---|
| 213 | } else {
|
|---|
| 214 | # append current origin to unqualified origin
|
|---|
| 215 | $origin = "$mdetail.$origin";
|
|---|
| 216 | }
|
|---|
| 217 |
|
|---|
| 218 | # if ($mdetail eq '.' || $mdetail =~ /$zname\.$/ || $zname =~ /$mdetail\.$/) {
|
|---|
| 219 | # $origin = $mdetail;
|
|---|
| 220 | # } else {
|
|---|
| 221 | # # if we continue, we either use an $ORIGIN that's out of zone, or ignore it and potentially publish incorrect records.
|
|---|
| 222 | # die "bad \$ORIGIN: $_\n";
|
|---|
| 223 | # }
|
|---|
| 224 |
|
|---|
| 225 | }
|
|---|
| 226 | elsif ($macro eq 'GENERATE') {
|
|---|
| 227 | # needs to generate CIDR range(s) as needed to match the start/stop points
|
|---|
| 228 | }
|
|---|
| 229 | # not handling $INCLUDE or $GENERATE (altho the latter seems to be mostly a less-flexible version of the template types)
|
|---|
| 230 | next;
|
|---|
| 231 | }
|
|---|
| 232 |
|
|---|
| 233 | my $origrec = $rec;
|
|---|
| 234 |
|
|---|
| 235 | # leading whitespace indicates "same label as last record"
|
|---|
| 236 | if ($rec =~ /^\s/) {
|
|---|
| 237 | $curlabel = $prevlabel;
|
|---|
| 238 | print " found empty label, using previous label\n";
|
|---|
| 239 | } else {
|
|---|
| 240 | ($curlabel) = ($rec =~ /^([\w\@_.-]+)\s/);
|
|---|
| 241 | }
|
|---|
| 242 |
|
|---|
| 243 | print " found '$curlabel'\n";
|
|---|
| 244 |
|
|---|
| 245 | # magic name!
|
|---|
| 246 | $curlabel = "$zname." if $curlabel eq '@';
|
|---|
| 247 |
|
|---|
| 248 | # append $ORIGIN if name is not fully qualified.
|
|---|
| 249 | if ($curlabel !~ /\.$/) {
|
|---|
| 250 | $curlabel .= ($origin eq '.' ? '.' : ".$origin");
|
|---|
| 251 | }
|
|---|
| 252 | print " expanded '$curlabel'\n";
|
|---|
| 253 |
|
|---|
| 254 | # hack pthbptt
|
|---|
| 255 | #$curlabel =~ s/\.\.$/./;
|
|---|
| 256 | # check for zone scope. skip bad records.
|
|---|
| 257 | if ($curlabel !~ /$zname.$/) {
|
|---|
| 258 | warn "bad record $origrec, maybe bad \$ORIGIN?\n";
|
|---|
| 259 | # bweh? maybe this should die()?
|
|---|
| 260 | last;
|
|---|
| 261 | next;
|
|---|
| 262 | }
|
|---|
| 263 |
|
|---|
| 264 | # trim the label, if any
|
|---|
| 265 | $rec =~ s/^([\w\@_.-]*)\s+//;
|
|---|
| 266 |
|
|---|
| 267 | # # records must begin in the first column, no leading whitespace
|
|---|
| 268 | # my ($name) = /^([\w\@_.-]+)\s/;
|
|---|
| 269 |
|
|---|
| 270 | # foo IN A 1.2.3.4
|
|---|
| 271 | # IN A 2.3.4.5
|
|---|
| 272 | # =
|
|---|
| 273 | # foo.zone. IN A 1.2.3.4
|
|---|
| 274 | # foo.zone. IN A 2.3.4.5
|
|---|
| 275 |
|
|---|
| 276 | # # "empty" label records inherit the previous label
|
|---|
| 277 | # # RRs start in the first column by definition, so leading whitespace indicates an inherited label
|
|---|
| 278 | # if (/^\s+/) {
|
|---|
| 279 | # # fatal error. if there is no previous label, we can by definition not set
|
|---|
| 280 | # # the current label based on it. this can only happen on the very first
|
|---|
| 281 | # # record, following records will *ALWAYS* have a previous label
|
|---|
| 282 | # die "bad first record ($_): no previous label\n" if !$prevlabel;
|
|---|
| 283 | # $name = $prevlabel;
|
|---|
| 284 | # }
|
|---|
| 285 |
|
|---|
| 286 | #print "$i ($rec)\n";#\t$curlabel";
|
|---|
| 287 |
|
|---|
| 288 |
|
|---|
| 289 |
|
|---|
| 290 |
|
|---|
| 291 | # # append zone name to record name if missing AND not dot-terminated;
|
|---|
| 292 | # # this happens automagically for forward zones, but not reverse because Reasons. (fixme?)
|
|---|
| 293 | # # suck up and deal with the error if the dot-termiated name is out of zone; should be
|
|---|
| 294 | # # impossible with valid BIND zone file but...
|
|---|
| 295 | # if ($name !~ /\.$/) {
|
|---|
| 296 | # $name .= ".$zname" if $name !~ /$zname$/;
|
|---|
| 297 | # } else {
|
|---|
| 298 | # warn "skipping out-of-zone record:\n\t($_)\n" if $name !~ /$zname\.$/;
|
|---|
| 299 | # next;
|
|---|
| 300 | # }
|
|---|
| 301 |
|
|---|
| 302 |
|
|---|
| 303 | my $nc = 0;
|
|---|
| 304 | my $class = 'IN';
|
|---|
| 305 | my $type;
|
|---|
| 306 | my $ttl;
|
|---|
| 307 | my $distance;
|
|---|
| 308 | my $weight;
|
|---|
| 309 | my $port;
|
|---|
| 310 | my $badrec;
|
|---|
| 311 | my $curatom = 'class';
|
|---|
| 312 |
|
|---|
| 313 | # unpack the class, TTL, and type
|
|---|
| 314 | eval {
|
|---|
| 315 | for (; $nc < 3; $nc++) {
|
|---|
| 316 | my ($atom) = ($rec =~ /^([\w\d.]+)\s/);
|
|---|
| 317 | # should be safe?
|
|---|
| 318 | last if !$atom;
|
|---|
| 319 | last if $type;
|
|---|
| 320 | #print "nc:$nc: $atom\n";
|
|---|
| 321 | if ($atom =~ /^\d+$/) {
|
|---|
| 322 | if (defined($ttl)) {
|
|---|
| 323 | die "bad record ($origrec)\n";
|
|---|
| 324 | # warn "bad record ($origrec)\n";
|
|---|
| 325 | # $badrec = 1;
|
|---|
| 326 | # last;
|
|---|
| 327 | } else {
|
|---|
| 328 | if ($curatom ne 'class' && $curatom ne 'ttl') {
|
|---|
| 329 | die "bad record ($origrec)\n";
|
|---|
| 330 | # warn "bad record ($origrec)\n";
|
|---|
| 331 | # $badrec = 1;
|
|---|
| 332 | # last;
|
|---|
| 333 | }
|
|---|
| 334 | $curatom = 'ttl';
|
|---|
| 335 | $ttl = $atom;
|
|---|
| 336 | }
|
|---|
| 337 | }
|
|---|
| 338 |
|
|---|
| 339 | elsif ($atom =~ /^IN|CS|CH|HS$/) {
|
|---|
| 340 | #print "a$nc: d2: atom [$atom]\n $rec\n" if $i == $debugid;
|
|---|
| 341 | if ($atom =~ /CS|CH|HS/) {
|
|---|
| 342 | die "unsupported class $atom in record ($origrec)\n";
|
|---|
| 343 | # warn "unsupported class $atom in record ($origrec)\n";
|
|---|
| 344 | # $badrec = 1;
|
|---|
| 345 | # last;
|
|---|
| 346 | }
|
|---|
| 347 | $curatom = 'class';
|
|---|
| 348 | $class = $atom;
|
|---|
| 349 | }
|
|---|
| 350 |
|
|---|
| 351 | elsif ($atom =~ /^[A-Z]+/) {
|
|---|
| 352 | # print "dbg: type $atom\n";
|
|---|
| 353 | if ($reverse_typemap{$atom}) {
|
|---|
| 354 | $type = $atom;
|
|---|
| 355 | } else {
|
|---|
| 356 | die "unknown type $atom in record ($origrec)\n";
|
|---|
| 357 | }
|
|---|
| 358 | }
|
|---|
| 359 | $rec =~ s/^$atom\s*//;
|
|---|
| 360 | }
|
|---|
| 361 | }; # record class/type/TTL parse
|
|---|
| 362 | if ($@) {
|
|---|
| 363 | warn $@;
|
|---|
| 364 | next;
|
|---|
| 365 | }
|
|---|
| 366 |
|
|---|
| 367 | ##todo: BIND conflates a repeated label with repeating the TTL too. Matter of opinion whether that's really correct or not.
|
|---|
| 368 | # set default TTL here so we can detect a TTL in the loop above
|
|---|
| 369 | $ttl = $defttl if !defined($ttl);
|
|---|
| 370 |
|
|---|
| 371 | #next if $badrec;
|
|---|
| 372 |
|
|---|
| 373 | $prevlabel = $curlabel;
|
|---|
| 374 |
|
|---|
| 375 |
|
|---|
| 376 | ## by convention the optional TTL leads the optional class, but they're apparently swappable.
|
|---|
| 377 | # my ($ttl) = /^(\d+)?\s/;
|
|---|
| 378 | # if (defined $ttl) {
|
|---|
| 379 | # # TTL may be zero
|
|---|
| 380 | # s/(\d+)?\s+//;
|
|---|
| 381 | # } else {
|
|---|
| 382 | # # Fall back to zone default TTL
|
|---|
| 383 | # $ttl = $zonettl;
|
|---|
| 384 | # }
|
|---|
| 385 | # my ($class) = /^(IN|CS|CH|HS|\d+)\s/;
|
|---|
| 386 | # if (defined $class) {
|
|---|
| 387 | # if ($class =~ /\d+/) {
|
|---|
| 388 | #
|
|---|
| 389 | # }
|
|---|
| 390 | # if ($class ne 'IN') {
|
|---|
| 391 | # warn "Non-Internet class ($class) records not supported:\n\t$origrec\n";
|
|---|
| 392 | # next;
|
|---|
| 393 | # }
|
|---|
| 394 | # s/(IN|CS|CH|HS)\s+//;
|
|---|
| 395 | # } else {
|
|---|
| 396 | # $class = 'IN';
|
|---|
| 397 | # }
|
|---|
| 398 | # my ($type) = /([A-Z-]+)\s/;
|
|---|
| 399 | # if (!$reverse_typemap{$type}) {
|
|---|
| 400 | # warn "Unknown type $type, skipping\n\t($rec)\n";
|
|---|
| 401 | # next;
|
|---|
| 402 | # }
|
|---|
| 403 | # s/([A-Z-]+)\s+//;
|
|---|
| 404 | # chomp;
|
|---|
| 405 |
|
|---|
| 406 |
|
|---|
| 407 | my $itype = $reverse_typemap{$type};
|
|---|
| 408 | my $rdata = $rec;
|
|---|
| 409 |
|
|---|
| 410 | # SOA is the only type that may span multiple lines. Probably. Note even AXFRed zones write multiline SOA records:
|
|---|
| 411 | #@ IN SOA test.example.invalid. test.example.invalid. (2020082500 7200 900 604800 3600)
|
|---|
| 412 | # IN NS olddns.example.com.
|
|---|
| 413 | # IN MX 1 fred.foo.bar.invalid.
|
|---|
| 414 | #foo IN A 192.168.16.45
|
|---|
| 415 | # AXFR'ed zone file gets written as
|
|---|
| 416 | #$ORIGIN .
|
|---|
| 417 | #$TTL 3600 ; 1 hour
|
|---|
| 418 | #example.invalid IN SOA test.example.invalid. test.example.invalid. (
|
|---|
| 419 | # 2020082500 ; serial
|
|---|
| 420 | # 7200 ; refresh (2 hours)
|
|---|
| 421 | # 900 ; retry (15 minutes)
|
|---|
| 422 | # 604800 ; expire (1 week)
|
|---|
| 423 | # 3600 ; minimum (1 hour)
|
|---|
| 424 | # )
|
|---|
| 425 | # NS olddns.example.com.
|
|---|
| 426 | # MX 1 fred.foo.bar.invalid.
|
|---|
| 427 | #$ORIGIN example.invalid.
|
|---|
| 428 | #foo A 192.168.16.45
|
|---|
| 429 | $foundtypes{$type}++;
|
|---|
| 430 |
|
|---|
| 431 | ##fixme: strip trailing . here? dnsadmin's normalized internal format omits it, some validation fails or may go funky
|
|---|
| 432 |
|
|---|
| 433 | if ($type eq 'SOA') {
|
|---|
| 434 | my ($ns, $adminmail) = ($rdata =~ /([\w.]+)\s+([\w.]+)\s+\(/);
|
|---|
| 435 | die "Can't parse gibberish SOAish record: $rec\n" if !$ns;
|
|---|
| 436 | $rdata =~ s/([\w.]+)\s+([\w.]+)\s+\(\s*//;
|
|---|
| 437 |
|
|---|
| 438 | # There are probably more efficient ways to do this but the SOA record
|
|---|
| 439 | # format is essentially character based, not line-based.
|
|---|
| 440 | # In theory the SOA serial etc may be spread over up to 5 lines, in any combination.
|
|---|
| 441 |
|
|---|
| 442 | # Parse fields from $rdata if present
|
|---|
| 443 | my @soabits;
|
|---|
| 444 | my @soafirst = split /\s+/, $rdata;
|
|---|
| 445 | while (my $f = shift @soafirst) {
|
|---|
| 446 | last if $f !~ /^\d/;
|
|---|
| 447 | push @soabits, $f;
|
|---|
| 448 | }
|
|---|
| 449 |
|
|---|
| 450 | # Read more lines if we don't have enough SOA fields filled
|
|---|
| 451 | while (scalar(@soabits) < 5) {
|
|---|
| 452 | my $tmp = <ZONEDATA>;
|
|---|
| 453 | $tmp =~ s/^\s*//;
|
|---|
| 454 | my @tmpsoa = split /\s+/, $tmp;
|
|---|
| 455 | while (my $f = shift @tmpsoa) {
|
|---|
| 456 | last if $f !~ /^\d/;
|
|---|
| 457 | push @soabits, $f;
|
|---|
| 458 | }
|
|---|
| 459 | if (scalar(@soabits) == 5) {
|
|---|
| 460 | last;
|
|---|
| 461 | }
|
|---|
| 462 | }
|
|---|
| 463 | my @soavals = ($zid, "$adminmail:$ns", 6, join(':', @soabits), $ttl, $location);
|
|---|
| 464 | # host = $adminmail:$ns
|
|---|
| 465 | # val = join(':', @soabits);
|
|---|
| 466 |
|
|---|
| 467 | if ($rev eq 'y') {
|
|---|
| 468 | $dnsdb->{dbh}->do("UPDATE revzones SET zserial = ? WHERE rdns_id = ?", undef, $soabits[0], $zid);
|
|---|
| 469 | $dnsdb->{dbh}->do("INSERT INTO records (rdns_id,host,type,val,ttl,location) VALUES (?,?,?,?,?,?)", undef, @soavals);
|
|---|
| 470 | } else {
|
|---|
| 471 | $dnsdb->{dbh}->do("UPDATE domains SET zserial = ? WHERE domain_id = ?", undef, $soabits[0], $zid);
|
|---|
| 472 | $dnsdb->{dbh}->do("INSERT INTO records (domain_id,host,type,val,ttl,location) VALUES (?,?,?,?,?,?)", undef, @soavals);
|
|---|
| 473 | }
|
|---|
| 474 | # $dnsdb->{dbh}->do("INSERT INTO records () VALUES ()");
|
|---|
| 475 | # next;
|
|---|
| 476 | #Zfqdn:mname:rname:ser:ref:ret:exp:min:ttl:timestamp:lo
|
|---|
| 477 | #print "Z$zname:$ns:$adminmail:$soabits[0]:$soabits[1]:$soabits[2]:$soabits[3]:$soabits[4]:$ttl\n";
|
|---|
| 478 | } # SOA
|
|---|
| 479 |
|
|---|
| 480 |
|
|---|
| 481 | # we're using DNSDB::addrec(), so we'll skip detailed validation of other records. Most won't need further breakdown
|
|---|
| 482 |
|
|---|
| 483 | elsif ($type eq 'A') {
|
|---|
| 484 | #print "+$curlabel:$rdata:$ttl\n";
|
|---|
| 485 | }
|
|---|
| 486 |
|
|---|
| 487 | elsif ($type eq 'NS') {
|
|---|
| 488 | #print "\&$curlabel::$rdata:$ttl\n";
|
|---|
| 489 | }
|
|---|
| 490 |
|
|---|
| 491 | elsif ($type eq 'CNAME') {
|
|---|
| 492 | #print "C$curlabel:$rdata:$ttl\n";
|
|---|
| 493 | }
|
|---|
| 494 |
|
|---|
| 495 | elsif ($type eq 'PTR') {
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | elsif ($type eq 'MX') {
|
|---|
| 499 | ($distance) = ($rdata =~ /^(\d+)\s+/);
|
|---|
| 500 | if (!defined($distance)) {
|
|---|
| 501 | warn "malformed MX record: $origrec, skipping\n";
|
|---|
| 502 | next;
|
|---|
| 503 | }
|
|---|
| 504 | $rdata =~ s/^\d+\s+//;
|
|---|
| 505 | }
|
|---|
| 506 |
|
|---|
| 507 | elsif ($type eq 'TXT') {
|
|---|
| 508 | # Quotes may arguably be syntactically required, but they're not actually part of the record data
|
|---|
| 509 | $rdata =~ s/^"//;
|
|---|
| 510 | $rdata =~ s/"$//;
|
|---|
| 511 | #print "'$curlabel:$rdata:$ttl\n";
|
|---|
| 512 | }
|
|---|
| 513 |
|
|---|
| 514 | elsif ($type eq 'RP') {
|
|---|
| 515 | }
|
|---|
| 516 |
|
|---|
| 517 | elsif ($type eq 'AAAA') {
|
|---|
| 518 | }
|
|---|
| 519 |
|
|---|
| 520 | elsif ($type eq 'SRV') {
|
|---|
| 521 | ($distance, $weight, $port) = ($rdata =~ /^(\d+)\s+(\d+)\s+(\d+)\s+/);
|
|---|
| 522 | if ( !defined($distance) || !defined($weight) || !defined($port) ) {
|
|---|
| 523 | warn "malformed SRV record: $origrec, skipping\n";
|
|---|
| 524 | next;
|
|---|
| 525 | }
|
|---|
| 526 | $rdata =~ s/^\d+\s+\d+\s+\d+\s+//;
|
|---|
| 527 | }
|
|---|
| 528 |
|
|---|
| 529 | # basically a dedicated clone of TXT, not sure anything actually looks up type SPF.
|
|---|
| 530 | # BIND autogenerates them from SPF TXT records.
|
|---|
| 531 | elsif ($type eq 'SPF') {
|
|---|
| 532 | # Quotes may arguably be syntactically required, but they're not actually part of the record data
|
|---|
| 533 | $rdata =~ s/^"//;
|
|---|
| 534 | $rdata =~ s/"$//;
|
|---|
| 535 | }
|
|---|
| 536 |
|
|---|
| 537 | # elsif ($type eq 'TXT') {
|
|---|
| 538 | # elsif ($type eq 'TXT') {
|
|---|
| 539 |
|
|---|
| 540 | else {
|
|---|
| 541 | warn "unsupported type $type, may not import correctly\n";
|
|---|
| 542 | }
|
|---|
| 543 |
|
|---|
| 544 | no warnings qw(uninitialized);
|
|---|
| 545 | #print "parsed: '$curlabel' '$class' '$ttl' '$type'->'$itype' '$rdata'\n";
|
|---|
| 546 | #print;
|
|---|
| 547 | #;imap IN 900 CNAME deepnet.cx.
|
|---|
| 548 | ##fixme: not sure how to handle the case where someone leaves off the class.
|
|---|
| 549 | if ($doimport) {
|
|---|
| 550 | my ($code, $msg);
|
|---|
| 551 | if ($rev eq 'n') {
|
|---|
| 552 | ($code,$msg) = $dnsdb->addRec('n', $rev, $zid, \$curlabel, \$itype, \$rdata, $ttl,
|
|---|
| 553 | $location, undef, undef, $distance, $weight, $port);
|
|---|
| 554 | } else {
|
|---|
| 555 | ($code,$msg) = $dnsdb->addRec('y', $rev, $zid, \$rdata, \$itype, \$curlabel, $ttl,
|
|---|
| 556 | $location, undef, undef, $distance, $weight, $port);
|
|---|
| 557 | }
|
|---|
| 558 | print "$code: $msg\n";
|
|---|
| 559 | }
|
|---|
| 560 | # $i++;
|
|---|
| 561 | }
|
|---|
| 562 |
|
|---|
| 563 | };
|
|---|
| 564 | if ($@) {
|
|---|
| 565 | warn "Error parsing zonefile: $@\n";
|
|---|
| 566 | $dnsdb->{dbh}->rollback;
|
|---|
| 567 | exit;
|
|---|
| 568 | }
|
|---|
| 569 |
|
|---|
| 570 | #print Dumper \%amap;
|
|---|
| 571 | #print Dumper \%namemap;
|
|---|
| 572 | #print Dumper \%cmap;
|
|---|
| 573 |
|
|---|
| 574 | #foreach my $n (keys %amap) {
|
|---|
| 575 | # foreach my $ip (@{$amap{$n}}) {
|
|---|
| 576 | ##print "$ip $n\n";
|
|---|
| 577 | # push @{$namemap{$ip}}, $n unless grep $n, @{$namemap{$ip}};
|
|---|
| 578 | # }
|
|---|
| 579 | #}
|
|---|
| 580 |
|
|---|
| 581 | #foreach my $c (keys %cmap) {
|
|---|
| 582 | # if ($amap{$c}) {
|
|---|
| 583 | # print Dumper(\@{$amap{$c}});
|
|---|
| 584 | # }
|
|---|
| 585 | ## print $amap{$c};
|
|---|
| 586 | #}
|
|---|
| 587 |
|
|---|
| 588 | # cname targ -> IP
|
|---|
| 589 |
|
|---|
| 590 | #foreach my $ip (sort keys %namemap) {
|
|---|
| 591 | # print "$ip ".join(' ', @{$namemap{$ip}})."\n";
|
|---|
| 592 | #}
|
|---|
| 593 |
|
|---|
| 594 | ##fixme: might not be sane, addRec() above does a commit() internally.
|
|---|
| 595 | #$dnsdb->{dbh}->rollback;
|
|---|
| 596 | $dnsdb->{dbh}->commit;
|
|---|
| 597 |
|
|---|
| 598 | foreach my $t (keys %foundtypes) {
|
|---|
| 599 | print "found $t: $foundtypes{$t}\n";
|
|---|
| 600 | }
|
|---|
![[ DNS Administrator ]](/fx/dnsadmin-logo.png){kind=logo}
