source: trunk/DNSDB.pm@ 497

Last change on this file since 497 was 497, checked in by Kris Deugau, 11 years ago

/trunk

Tweak some error messages from addDomain(), remove an obsolete one.
  • Property svn:keywords set to Date Rev Author Id
File size: 188.7 KB
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1# dns/trunk/DNSDB.pm
2# Abstraction functions for DNS administration
3##
4# $Id: DNSDB.pm 497 2013-05-06 02:37:32Z kdeugau $
5# Copyright 2008-2013 Kris Deugau <kdeugau@deepnet.cx>
6#
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program. If not, see <http://www.gnu.org/licenses/>.
19##
20
21package DNSDB;
22
23use strict;
24use warnings;
25use Exporter;
26use DBI;
27use Net::DNS;
28use Crypt::PasswdMD5;
29use Net::SMTP;
30use NetAddr::IP qw(:lower);
31use POSIX;
32use Fcntl qw(:flock);
33
34use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
35
36$VERSION = 1.1; ##VERSION##
37@ISA = qw(Exporter);
38@EXPORT_OK = qw(
39 &initGlobals &login &initActionLog
40 &getPermissions &changePermissions &comparePermissions
41 &changeGroup
42 &loadConfig &connectDB &finish
43 &addDomain &delZone &domainName &revName &domainID &revID &addRDNS
44 &getZoneCount &getZoneList &getZoneLocation
45 &addGroup &delGroup &getChildren &groupName
46 &getGroupCount &getGroupList
47 &addUser &updateUser &delUser &userFullName &userStatus &getUserData
48 &getUserCount &getUserList &getUserDropdown
49 &addLoc &updateLoc &delLoc &getLoc
50 &getLocCount &getLocList &getLocDropdown
51 &getSOA &updateSOA &getRecLine &getRecList &getRecCount
52 &addRec &updateRec &delRec
53 &getLogCount &getLogEntries
54 &getRevPattern
55 &getTypelist
56 &parentID
57 &isParent
58 &zoneStatus &getZonesByCIDR &importAXFR
59 &export
60 &mailNotify
61 %typemap %reverse_typemap %config
62 @permtypes $permlist %permchains
63 );
64
65@EXPORT = qw(%typemap %reverse_typemap @permtypes $permlist %permchains);
66%EXPORT_TAGS = ( ALL => [qw(
67 &initGlobals &login &initActionLog
68 &getPermissions &changePermissions &comparePermissions
69 &changeGroup
70 &loadConfig &connectDB &finish
71 &addDomain &delZone &domainName &revName &domainID &revID &addRDNS
72 &getZoneCount &getZoneList &getZoneLocation
73 &addGroup &delGroup &getChildren &groupName
74 &getGroupCount &getGroupList
75 &addUser &updateUser &delUser &userFullName &userStatus &getUserData
76 &getUserCount &getUserList &getUserDropdown
77 &addLoc &updateLoc &delLoc &getLoc
78 &getLocCount &getLocList &getLocDropdown
79 &getSOA &updateSOA &getRecLine &getRecList &getRecCount
80 &addRec &updateRec &delRec
81 &getLogCount &getLogEntries
82 &getRevPattern
83 &getTypelist
84 &parentID
85 &isParent
86 &zoneStatus &getZonesByCIDR &importAXFR
87 &export
88 &mailNotify
89 %typemap %reverse_typemap %config
90 @permtypes $permlist %permchains
91 )]
92 );
93
94our $errstr = '';
95our $resultstr = '';
96
97# Halfway sane defaults for SOA, TTL, etc.
98# serial defaults to 0 for convenience.
99# value will be either YYYYMMDDNN for BIND/etc, or auto-internal for tinydns
100our %def = qw (
101 contact hostmaster.DOMAIN
102 prins ns1.myserver.com
103 serial 0
104 soattl 86400
105 refresh 10800
106 retry 3600
107 expire 604800
108 minttl 10800
109 ttl 10800
110);
111
112# Arguably defined wholly in the db, but little reason to change without supporting code changes
113# group_view, user_view permissions? separate rDNS permission(s)?
114our @permtypes = qw (
115 group_edit group_create group_delete
116 user_edit user_create user_delete
117 domain_edit domain_create domain_delete
118 record_edit record_create record_delete record_locchg
119 location_edit location_create location_delete location_view
120 self_edit admin
121);
122our $permlist = join(',',@permtypes);
123
124# Some permissions more or less require certain others.
125our %permchains = (
126 user_edit => 'self_edit',
127 location_edit => 'location_view',
128 location_create => 'location_view',
129 location_delete => 'location_view',
130 record_locchg => 'location_view',
131);
132
133# DNS record type map and reverse map.
134# loaded from the database, from http://www.iana.org/assignments/dns-parameters
135our %typemap;
136our %reverse_typemap;
137
138# Prepopulate a basic config. Note some of these *will* cause errors if left unset.
139# note: add appropriate stanzas in loadConfig to parse these
140our %config = (
141 # Database connection info
142 dbname => 'dnsdb',
143 dbuser => 'dnsdb',
144 dbpass => 'secret',
145 dbhost => '',
146
147 # Email notice settings
148 mailhost => 'smtp.example.com',
149 mailnotify => 'dnsdb@example.com', # to
150 mailsender => 'dnsdb@example.com', # from
151 mailname => 'DNS Administration',
152 orgname => 'Example Corp',
153 domain => 'example.com',
154
155 # Template directory
156 templatedir => 'templates/',
157# fmeh. this is a real web path, not a logical internal one. hm..
158# cssdir => 'templates/',
159 sessiondir => 'session/',
160 exportcache => 'cache/',
161
162 # Session params
163 timeout => '3600', # 1 hour default
164
165 # Other miscellanea
166 log_failures => 1, # log all evarthing by default
167 perpage => 15,
168 maxfcgi => 100, # reasonable default?
169 );
170
171## (Semi)private variables
172
173# Hash of functions for validating record types. Filled in initGlobals() since
174# it relies on visibility flags from the rectypes table in the DB
175my %validators;
176
177# Entity-relationship reference hashes.
178my %par_tbl = (
179 group => 'groups',
180 user => 'users',
181 defrec => 'default_records',
182 defrevrec => 'default_rev_records',
183 domain => 'domains',
184 revzone => 'revzones',
185 record => 'records'
186 );
187my %id_col = (
188 group => 'group_id',
189 user => 'user_id',
190 defrec => 'record_id',
191 defrevrec => 'record_id',
192 domain => 'domain_id',
193 revzone => 'rdns_id',
194 record => 'record_id'
195 );
196my %par_col = (
197 group => 'parent_group_id',
198 user => 'group_id',
199 defrec => 'group_id',
200 defrevrec => 'group_id',
201 domain => 'group_id',
202 revzone => 'group_id',
203 record => 'domain_id'
204 );
205my %par_type = (
206 group => 'group',
207 user => 'group',
208 defrec => 'group',
209 defrevrec => 'group',
210 domain => 'group',
211 revzone => 'group',
212 record => 'domain'
213 );
214
215##
216## Constructor and destructor
217##
218
219sub new {
220 my $this = shift;
221 my $class = ref($this) || $this;
222 my %args = @_;
223##fixme? to ponder: do we do some magic if the caller sets eg dbname to prevent parsing of the config file?
224 if (!loadConfig(basename => $args{configfile})) {
225 warn "Using default configuration; unable to load custom settings: $errstr\n";
226 }
227 my $self = \%config;
228 $self->{configfile} = $args{configfile};
229 bless $self, $class;
230 $self->{dbh} = connectDB($self->{dbname}, $self->{dbuser}, $self->{dbpass}, $self->{dbhost}) or return;
231 $self->initGlobals();
232
233 return $self;
234}
235
236sub DESTROY {
237 my $self = shift;
238 $self->{dbh}->disconnect;
239}
240
241sub errstr { $DNSDB::errstr; }
242
243##
244## utility functions
245##
246
247## DNSDB::_rectable()
248# Takes default+rdns flags, returns appropriate table name
249sub _rectable {
250 my $def = shift;
251 my $rev = shift;
252
253 return 'records' if $def ne 'y';
254 return 'default_records' if $rev ne 'y';
255 return 'default_rev_records';
256} # end _rectable()
257
258## DNSDB::_recparent()
259# Takes default+rdns flags, returns appropriate parent-id column name
260sub _recparent {
261 my $def = shift;
262 my $rev = shift;
263
264 return 'group_id' if $def eq 'y';
265 return 'rdns_id' if $rev eq 'y';
266 return 'domain_id';
267} # end _recparent()
268
269## DNSDB::_ipparent()
270# Check an IP to be added in a reverse zone to see if it's really in the requested parent.
271# Takes default and reverse flags, IP (fragment) to check, parent zone ID,
272# and a reference to a NetAddr::IP object (also used to pass back a fully-reconstructed IP for
273# database insertion)
274sub _ipparent {
275 my $self = shift;
276 my $dbh = $self->{dbh};
277 my $defrec = shift;
278 my $revrec = shift;
279 my $val = shift;
280 my $id = shift;
281 my $addr = shift;
282
283 return if $revrec ne 'y'; # this sub not useful in forward zones
284
285 $$addr = NetAddr::IP->new($$val); #necessary?
286
287 # subsub to split, reverse, and overlay an IP fragment on a netblock
288 sub __rev_overlay {
289 my $splitme = shift; # ':' or '.', m'lud?
290 my $parnet = shift;
291 my $val = shift;
292 my $addr = shift;
293
294 my $joinme = $splitme;
295 $splitme = '\.' if $splitme eq '.';
296 my @working = reverse(split($splitme, $parnet->addr));
297 my @parts = reverse(split($splitme, $$val));
298 for (my $i = 0; $i <= $#parts; $i++) {
299 $working[$i] = $parts[$i];
300 }
301 my $checkme = NetAddr::IP->new(join($joinme, reverse(@working))) or return 0;
302 return 0 unless $checkme->within($parnet);
303 $$addr = $checkme; # force "correct" IP to be recorded.
304 return 1;
305 }
306
307 my ($parstr) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id = ?", undef, ($id));
308 my $parnet = NetAddr::IP->new($parstr);
309
310 # Fail early on v6-in-v4 or v4-in-v6. We're not accepting these ATM.
311 return 0 if $parnet->addr =~ /\./ && $$val =~ /:/;
312 return 0 if $parnet->addr =~ /:/ && $$val =~ /\./;
313
314 if ($$addr && ($$val =~ /^[\da-fA-F][\da-fA-F:]+[\da-fA-F]$/ || $$val =~ m|/\d+$|)) {
315 # the only case where NetAddr::IP's acceptance of legitimate IPs is "correct" is for a proper IPv6 address,
316 # or a netblock (only expected on templates)
317 # the rest we have to restructure before fiddling. *sigh*
318 return 1 if $$addr->within($parnet);
319 } else {
320 # We don't have a complete IP in $$val (yet)... unless we have a netblock
321 if ($parnet->addr =~ /:/) {
322 $$val =~ s/^:+//; # gotta strip'em all...
323 return __rev_overlay(':', $parnet, $val, $addr);
324 }
325 if ($parnet->addr =~ /\./) {
326 $$val =~ s/^\.+//;
327 return __rev_overlay('.', $parnet, $val, $addr);
328 }
329 # should be impossible to get here...
330 }
331 # ... and here.
332 # can't do nuttin' in forward zones
333} # end _ipparent()
334
335## DNSDB::_hostparent()
336# A little different than _ipparent above; this tries to *find* the parent zone of a hostname
337# Takes a hostname.
338# Returns the domain ID of the parent domain if one was found.
339sub _hostparent {
340 my $self = shift;
341 my $dbh = $self->{dbh};
342 my $hname = shift;
343
344 $hname =~ s/^\*\.//; # this should be impossible to find in the domains table.
345 my @hostbits = split /\./, $hname;
346 my $sth = $dbh->prepare("SELECT count(*),domain_id FROM domains WHERE lower(domain) = lower(?) GROUP BY domain_id");
347 foreach (@hostbits) {
348 $sth->execute($hname);
349 my ($found, $parid) = $sth->fetchrow_array;
350 if ($found) {
351 return $parid;
352 }
353 $hname =~ s/^$_\.//;
354 }
355} # end _hostparent()
356
357## DNSDB::_log()
358# Log an action
359# Takes a log entry hash containing at least:
360# group_id, log entry
361# and optionally one or more of:
362# domain_id, rdns_id
363# The %userdata hash provides the user ID, username, and fullname
364sub _log {
365 my $self = shift;
366 my $dbh = $self->{dbh};
367
368 my %args = @_;
369
370 $args{rdns_id} = 0 if !$args{rdns_id};
371 $args{domain_id} = 0 if !$args{domain_id};
372
373##fixme: farm out the actual logging to different subs for file, syslog, internal, etc based on config
374# if ($config{log_channel} eq 'sql') {
375 $dbh->do("INSERT INTO log (domain_id,rdns_id,group_id,entry,user_id,email,name) VALUES (?,?,?,?,?,?,?)",
376 undef,
377 ($args{domain_id}, $args{rdns_id}, $args{group_id}, $args{entry},
378 $self->{loguserid}, $self->{logusername}, $self->{logfullname}) );
379# } elsif ($config{log_channel} eq 'file') {
380# } elsif ($config{log_channel} eq 'syslog') {
381# }
382} # end _log
383
384
385##
386## Record validation subs.
387##
388
389## All of these subs take substantially the same arguments:
390# a hash containing at least the following keys:
391# - defrec (default/live flag)
392# - revrec (forward/reverse flag)
393# - id (parent entity ID)
394# - host (hostname)
395# - rectype
396# - val (IP, hostname [CNAME/MX/SRV] or text)
397# - addr (NetAddr::IP object from val. May be undef.)
398# MX and SRV record validation also expect distance, and SRV records expect weight and port as well.
399# host, rectype, and addr should be references as these may be modified in validation
400
401# A record
402sub _validate_1 {
403 my $self = shift;
404 my $dbh = $self->{dbh};
405
406 my %args = @_;
407
408 return ('FAIL', 'Reverse zones cannot contain A records') if $args{revrec} eq 'y';
409
410 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
411 # or the intended parent domain for live records.
412 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
413 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
414
415 # Check IP is well-formed, and that it's a v4 address
416 # Fail on "compact" IPv4 variants, because they are not consistent and predictable.
417 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
418 unless ${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/;
419 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
420 unless $args{addr} && !$args{addr}->{isv6};
421 # coerce IP/value to normalized form for storage
422 ${$args{val}} = $args{addr}->addr;
423
424 return ('OK','OK');
425} # done A record
426
427# NS record
428sub _validate_2 {
429 my $self = shift;
430 my $dbh = $self->{dbh};
431
432 my %args = @_;
433
434 # Check that the target of the record is within the parent.
435 # Yes, host<->val are mixed up here; can't see a way to avoid it. :(
436 if ($args{defrec} eq 'n') {
437 # Check if IP/address/zone/"subzone" is within the parent
438 if ($args{revrec} eq 'y') {
439 my $tmpip = NetAddr::IP->new(${$args{val}});
440 my $pname = $self->revName($args{id});
441 return ('FAIL',"${$args{val}} not within $pname")
442 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$tmpip);
443 # Sub the returned thing for ZONE? This could get stupid if you have typos...
444 ${$args{val}} =~ s/ZONE/$tmpip->address/;
445 } else {
446 my $pname = $self->domainName($args{id});
447 ${$args{host}} = $pname if ${$args{host}} !~ /\.$pname$/;
448 }
449 } else {
450 # Default reverse NS records should always refer to the implied parent
451 ${$args{host}} = 'DOMAIN' if $args{revrec} eq 'n';
452 ${$args{val}} = 'ZONE' if $args{revrec} eq 'y';
453 }
454
455# Let this lie for now. Needs more magic.
456# # Check IP is well-formed, and that it's a v4 address
457# return ('FAIL',"A record must be a valid IPv4 address")
458# unless $addr && !$addr->{isv6};
459# # coerce IP/value to normalized form for storage
460# $$val = $addr->addr;
461
462 return ('OK','OK');
463} # done NS record
464
465# CNAME record
466sub _validate_5 {
467 my $self = shift;
468 my $dbh = $self->{dbh};
469
470 my %args = @_;
471
472# Not really true, but these are only useful for delegating smaller-than-/24 IP blocks.
473# This is fundamentally a messy operation and should really just be taken care of by the
474# export process, not manual maintenance of the necessary records.
475 return ('FAIL', 'Reverse zones cannot contain CNAME records') if $args{revrec} eq 'y';
476
477 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
478 # or the intended parent domain for live records.
479 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
480 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
481
482 return ('OK','OK');
483} # done CNAME record
484
485# SOA record
486sub _validate_6 {
487 # Smart monkeys won't stick their fingers in here; we have
488 # separate dedicated routines to deal with SOA records.
489 return ('OK','OK');
490} # done SOA record
491
492# PTR record
493sub _validate_12 {
494 my $self = shift;
495 my $dbh = $self->{dbh};
496
497 my %args = @_;
498
499 if ($args{revrec} eq 'y') {
500 if ($args{defrec} eq 'n') {
501 return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".$self->revName($args{id}))
502 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
503 ${$args{val}} = $args{addr}->addr;
504 } else {
505 if (${$args{val}} =~ /\./) {
506 # looks like a v4 or fragment
507 if (${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/) {
508 # woo! a complete IP! validate it and normalize, or fail.
509 $args{addr} = NetAddr::IP->new(${$args{val}})
510 or return ('FAIL', "IP/value looks like IPv4 but isn't valid");
511 ${$args{val}} = $args{addr}->addr;
512 } else {
513 ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/;
514 }
515 } elsif (${$args{val}} =~ /[a-f:]/) {
516 # looks like a v6 or fragment
517 ${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/;
518 if ($args{addr}) {
519 if ($args{addr}->addr =~ /^0/) {
520 ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/;
521 } else {
522 ${$args{val}} = $args{addr}->addr;
523 }
524 }
525 } else {
526 # bare number (probably). These could be v4 or v6, so we'll
527 # expand on these on creation of a reverse zone.
528 ${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/;
529 }
530 ${$args{host}} =~ s/\.*$/\.$config{domain}/ if ${$args{host}} !~ /(?:$config{domain}|ADMINDOMAIN)$/;
531 }
532
533# Multiple PTR records do NOT generally do what most people believe they do,
534# and tend to fail in the most awkward way possible. Check and warn.
535# We use $val instead of $addr->addr since we may be in a defrec, and may have eg "ZONE::42" or "ZONE.12"
536
537 my @checkvals = (${$args{val}});
538 if (${$args{val}} =~ /,/) {
539 # push . and :: variants into checkvals if val has ,
540 my $tmp;
541 ($tmp = ${$args{val}}) =~ s/,/./;
542 push @checkvals, $tmp;
543 ($tmp = ${$args{val}}) =~ s/,/::/;
544 push @checkvals, $tmp;
545 }
546 my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ?");
547 foreach my $checkme (@checkvals) {
548 if ($args{update}) {
549 # Record update. There should usually be an existing PTR (the record being updated)
550 my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
551 " WHERE val = ?", undef, ($checkme)) };
552 return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
553 if @ptrs && (!grep /^$args{update}$/, @ptrs);
554 } else {
555 # New record. Always warn if a PTR exists
556 my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
557 " WHERE val = ?", undef, ($checkme));
558 return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
559 if $ptrcount;
560 }
561 }
562
563 } else {
564 # Not absolutely true but only useful if you hack things up for sub-/24 v4 reverse delegations
565 # Simpler to just create the reverse zone and grant access for the customer to edit it, and create direct
566 # PTR records on export
567 return ('FAIL',"Forward zones cannot contain PTR records");
568 }
569
570 return ('OK','OK');
571} # done PTR record
572
573# MX record
574sub _validate_15 {
575 my $self = shift;
576 my $dbh = $self->{dbh};
577
578 my %args = @_;
579
580# Not absolutely true but WTF use is an MX record for a reverse zone?
581 return ('FAIL', 'Reverse zones cannot contain MX records') if $args{revrec} eq 'y';
582
583 return ('FAIL', "Distance is required for MX records") unless defined(${$args{dist}});
584 ${$args{dist}} =~ s/\s*//g;
585 return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
586
587 ${$args{fields}} = "distance,";
588 push @{$args{vallist}}, ${$args{dist}};
589
590 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
591 # or the intended parent domain for live records.
592 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
593 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
594
595# hmm.. this might work. except possibly for something pointing to "deadbeef.ca". <g>
596# if ($type == $reverse_typemap{NS} || $type == $reverse_typemap{MX} || $type == $reverse_typemap{SRV}) {
597# if ($val =~ /^\s*[\da-f:.]+\s*$/) {
598# return ('FAIL',"$val is not a valid IP address") if !$addr;
599# }
600# }
601
602 return ('OK','OK');
603} # done MX record
604
605# TXT record
606sub _validate_16 {
607 # Could arguably put a WARN return here on very long (>512) records
608 return ('OK','OK');
609} # done TXT record
610
611# RP record
612sub _validate_17 {
613 # Probably have to validate these some day
614 return ('OK','OK');
615} # done RP record
616
617# AAAA record
618sub _validate_28 {
619 my $self = shift;
620 my $dbh = $self->{dbh};
621
622 my %args = @_;
623
624 return ('FAIL', 'Reverse zones cannot contain AAAA records') if $args{revrec} eq 'y';
625
626 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
627 # or the intended parent domain for live records.
628 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
629 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
630
631 # Check IP is well-formed, and that it's a v6 address
632 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address")
633 unless $args{addr} && $args{addr}->{isv6};
634 # coerce IP/value to normalized form for storage
635 ${$args{val}} = $args{addr}->addr;
636
637 return ('OK','OK');
638} # done AAAA record
639
640# SRV record
641sub _validate_33 {
642 my $self = shift;
643 my $dbh = $self->{dbh};
644
645 my %args = @_;
646
647# Not absolutely true but WTF use is an SRV record for a reverse zone?
648 return ('FAIL', 'Reverse zones cannot contain SRV records') if $args{revrec} eq 'y';
649
650 return ('FAIL', "Distance is required for SRV records") unless defined(${$args{dist}});
651 ${$args{dist}} =~ s/\s*//g;
652 return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
653
654 return ('FAIL',"SRV records must begin with _service._protocol [${$args{host}}]")
655 unless ${$args{host}} =~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-zA-Z0-9-]+/;
656 return ('FAIL',"Port and weight are required for SRV records")
657 unless defined(${$args{weight}}) && defined(${$args{port}});
658 ${$args{weight}} =~ s/\s*//g;
659 ${$args{port}} =~ s/\s*//g;
660
661 return ('FAIL',"Port and weight are required, and must be numeric")
662 unless ${$args{weight}} =~ /^\d+$/ && ${$args{port}} =~ /^\d+$/;
663
664 ${$args{fields}} = "distance,weight,port,";
665 push @{$args{vallist}}, (${$args{dist}}, ${$args{weight}}, ${$args{port}});
666
667 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
668 # or the intended parent domain for live records.
669 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
670 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
671
672 return ('OK','OK');
673} # done SRV record
674
675# Now the custom types
676
677# A+PTR record. With a very little bit of magic we can also use this sub to validate AAAA+PTR. Whee!
678sub _validate_65280 {
679 my $self = shift;
680 my $dbh = $self->{dbh};
681
682 my %args = @_;
683
684 my $code = 'OK';
685 my $msg = 'OK';
686
687 if ($args{defrec} eq 'n') {
688 # live record; revrec determines whether we validate the PTR or A component first.
689
690 if ($args{revrec} eq 'y') {
691 ($code,$msg) = $self->_validate_12(%args);
692 return ($code,$msg) if $code eq 'FAIL';
693
694 # check A+PTR is really v4
695 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
696 if ${$args{rectype}} == 65280 && $args{addr}->{isv6};
697 # check AAAA+PTR is really v6
698 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address")
699 if ${$args{rectype}} == 65281 && !$args{addr}->{isv6};
700
701 # Check if the reqested domain exists. If not, coerce the type down to PTR and warn.
702 if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) {
703 my $addmsg = "Record ".($args{update} ? 'updated' : 'added').
704 " as PTR instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}";
705 $msg .= "\n$addmsg" if $code eq 'WARN';
706 $msg = $addmsg if $code eq 'OK';
707 ${$args{rectype}} = $reverse_typemap{PTR};
708 return ('WARN', $msg);
709 }
710
711 # Add domain ID to field list and values
712 ${$args{fields}} .= "domain_id,";
713 push @{$args{vallist}}, ${$args{domid}};
714
715 } else {
716 ($code,$msg) = $self->_validate_1(%args) if ${$args{rectype}} == 65280;
717 ($code,$msg) = $self->_validate_28(%args) if ${$args{rectype}} == 65281;
718 return ($code,$msg) if $code eq 'FAIL';
719
720 # Check if the requested reverse zone exists - note, an IP fragment won't
721 # work here since we don't *know* which parent to put it in.
722 # ${$args{val}} has been validated as a valid IP by now, in one of the above calls.
723 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?".
724 " ORDER BY masklen(revnet) DESC", undef, (${$args{val}}));
725 if (!$revid) {
726 $msg = "Record ".($args{update} ? 'updated' : 'added')." as ".(${$args{rectype}} == 65280 ? 'A' : 'AAAA').
727 " instead of $typemap{${$args{rectype}}}; reverse zone not found for ${$args{val}}";
728 ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA});
729 return ('WARN', $msg);
730 }
731
732 # Check for duplicate PTRs. Note we don't have to play games with $code and $msg, because
733 # by definition there can't be duplicate PTRs if the reverse zone isn't managed here.
734 if ($args{update}) {
735 # Record update. There should usually be an existing PTR (the record being updated)
736 my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
737 " WHERE val = ?", undef, (${$args{val}})) };
738 if (@ptrs && (!grep /^$args{update}$/, @ptrs)) {
739 $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
740 $code = 'WARN';
741 }
742 } else {
743 # New record. Always warn if a PTR exists
744 my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
745 " WHERE val = ?", undef, (${$args{val}}));
746 $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want"
747 if $ptrcount;
748 $code = 'WARN' if $ptrcount;
749 }
750
751# my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
752# " WHERE val = ?", undef, ${$args{val}});
753# if ($ptrcount) {
754# my $curid = $dbh->selectrow_array("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
755# " WHERE val = ?
756# $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
757# $code = 'WARN';
758# }
759
760 ${$args{fields}} .= "rdns_id,";
761 push @{$args{vallist}}, $revid;
762 }
763
764 } else { # defrec eq 'y'
765 if ($args{revrec} eq 'y') {
766 ($code,$msg) = $self->_validate_12(%args);
767 return ($code,$msg) if $code eq 'FAIL';
768 if (${$args{rectype}} == 65280) {
769 return ('FAIL',"A+PTR record must be a valid IPv4 address or fragment")
770 if ${$args{val}} =~ /:/;
771 ${$args{val}} =~ s/^ZONE,/ZONE./; # Clean up after uncertain IP-fragment-type from _validate_12
772 } elsif (${$args{rectype}} == 65281) {
773 return ('FAIL',"AAAA+PTR record must be a valid IPv6 address or fragment")
774 if ${$args{val}} =~ /\./;
775 ${$args{val}} =~ s/^ZONE,/ZONE::/; # Clean up after uncertain IP-fragment-type from _validate_12
776 }
777 } else {
778 # This is easy. I also can't see a real use-case for A/AAAA+PTR in *all* forward
779 # domains, since you wouldn't be able to substitute both domain and reverse zone
780 # sanely, and you'd end up with guaranteed over-replicated PTR records that would
781 # confuse the hell out of pretty much anything that uses them.
782##fixme: make this a config flag?
783 return ('FAIL', "$typemap{${$args{rectype}}} records not allowed in default domains");
784 }
785 }
786
787 return ($code, $msg);
788} # done A+PTR record
789
790# AAAA+PTR record
791# A+PTR above has been magicked to handle AAAA+PTR as well.
792sub _validate_65281 {
793 return _validate_65280(@_);
794} # done AAAA+PTR record
795
796# PTR template record
797sub _validate_65282 {
798 my $self = shift;
799 my $dbh = $self->{dbh};
800
801 my %args = @_;
802
803 # we're *this* >.< close to being able to just call _validate_12... unfortunately we can't, quite.
804 if ($args{revrec} eq 'y') {
805 if ($args{defrec} eq 'n') {
806 return ('FAIL', "Template block ${$args{val}} is not within ".$self->revName($args{id}))
807 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
808##fixme: warn if $args{val} is not /31 or larger block?
809 ${$args{val}} = "$args{addr}";
810 } else {
811 if (${$args{val}} =~ /\./) {
812 # looks like a v4 or fragment
813 if (${$args{val}} =~ m|^\d+\.\d+\.\d+\.\d+(?:/\d+)?$|) {
814 # woo! a complete IP! validate it and normalize, or fail.
815 $args{addr} = NetAddr::IP->new(${$args{val}})
816 or return ('FAIL', "IP/value looks like IPv4 but isn't valid");
817 ${$args{val}} = "$args{addr}";
818 } else {
819 ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/;
820 }
821 } elsif (${$args{val}} =~ /[a-f:]/) {
822 # looks like a v6 or fragment
823 ${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/;
824 if ($args{addr}) {
825 if ($args{addr}->addr =~ /^0/) {
826 ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/;
827 } else {
828 ${$args{val}} = "$args{addr}";
829 }
830 }
831 } else {
832 # bare number (probably). These could be v4 or v6, so we'll
833 # expand on these on creation of a reverse zone.
834 ${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/;
835 }
836 }
837##fixme: validate %-patterns?
838
839# Unlike single PTR records, there is absolutely no way to sanely support multiple
840# PTR templates for the same block, since they expect to expand to all the individual
841# IPs on export. Nested templates should be supported though.
842
843 my @checkvals = (${$args{val}});
844 if (${$args{val}} =~ /,/) {
845 # push . and :: variants into checkvals if val has ,
846 my $tmp;
847 ($tmp = ${$args{val}}) =~ s/,/./;
848 push @checkvals, $tmp;
849 ($tmp = ${$args{val}}) =~ s/,/::/;
850 push @checkvals, $tmp;
851 }
852##fixme: this feels wrong still - need to restrict template pseudorecords to One Of Each
853# Per Netblock such that they don't conflict on export
854 my $typeck;
855# type 65282 -> ptr template -> look for any of 65282, 65283, 65284
856 $typeck = 'type=65283 OR type=65284' if ${$args{rectype}} == 65282;
857# type 65283 -> a+ptr template -> v4 -> look for 65282 or 65283
858 $typeck = 'type=65283' if ${$args{rectype}} == 65282;
859# type 65284 -> aaaa+ptr template -> v6 -> look for 65282 or 65284
860 $typeck = 'type=65284' if ${$args{rectype}} == 65282;
861 my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ? ".
862 "AND (type=65282 OR $typeck)");
863 foreach my $checkme (@checkvals) {
864 $pcsth->execute($checkme);
865 my ($rc) = $pcsth->fetchrow_array;
866 return ('FAIL', "Only one template pseudorecord may exist for a given IP block") if $rc > 1;
867 }
868
869 } else {
870 return ('FAIL', "Forward zones cannot contain PTR records");
871 }
872
873 return ('OK','OK');
874} # done PTR template record
875
876# A+PTR template record
877sub _validate_65283 {
878 my $self = shift;
879 my $dbh = $self->{dbh};
880
881 my %args = @_;
882
883 my ($code,$msg) = ('OK','OK');
884
885##fixme: need to fiddle things since A+PTR templates are acceptable in live
886# forward zones but not default records
887 if ($args{defrec} eq 'n') {
888 if ($args{revrec} eq 'n') {
889 ($code,$msg) = $self->_validate_1(%args) if ${$args{rectype}} == 65280;
890 ($code,$msg) = $self->_validate_28(%args) if ${$args{rectype}} == 65281;
891 return ($code,$msg) if $code eq 'FAIL';
892
893 # Check if the requested reverse zone exists - note, an IP fragment won't
894 # work here since we don't *know* which parent to put it in.
895 # ${$args{val}} has been validated as a valid IP by now, in one of the above calls.
896 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?".
897 " ORDER BY masklen(revnet) DESC", undef, (${$args{val}}));
898 # Fail if no match; we can't coerce a PTR-template type down to not include the PTR bit currently.
899 if (!$revid) {
900 $msg = "Can't ".($args{update} ? 'update' : 'add')." ${$args{host}}/${$args{val}} as ".
901 "$typemap{${$args{rectype}}}: reverse zone not found for ${$args{val}}";
902##fixme: add A template, AAAA template types?
903# ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA});
904 return ('FAIL', $msg);
905 }
906
907 # Add reverse zone ID to field list and values
908 ${$args{fields}} .= "rdns_id,";
909 push @{$args{vallist}}, $revid;
910
911 } else {
912 return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".$self->revName($args{id}))
913 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
914 ${$args{val}} = "$args{addr}";
915
916 if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) {
917 my $addmsg = "Record ".($args{update} ? 'updated' : 'added').
918 " as PTR template instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}";
919 $msg .= "\n$addmsg" if $code eq 'WARN';
920 $msg = $addmsg if $code eq 'OK';
921 ${$args{rectype}} = 65282;
922 return ('WARN', $msg);
923 }
924
925 # Add domain ID to field list and values
926 ${$args{fields}} .= "domain_id,";
927 push @{$args{vallist}}, ${$args{domid}};
928 }
929
930 } else {
931 my ($code,$msg) = $self->_validate_65282(%args);
932 return ($code, $msg) if $code eq 'FAIL';
933 # get domain, check against ${$args{name}}
934 }
935
936 return ('OK','OK');
937} # done AAAA+PTR template record
938
939# AAAA+PTR template record
940sub _validate_65284 {
941 return ('OK','OK');
942} # done AAAA+PTR template record
943
944# Delegation record
945# This is essentially a specialized clone of the NS record, primarily useful
946# for delegating IPv4 sub-/24 reverse blocks
947sub _validate_65285 {
948 my $self = shift;
949 my $dbh = $self->{dbh};
950
951 my %args = @_;
952
953# Almost, but not quite, identical to NS record validation.
954
955 # Check that the target of the record is within the parent.
956 # Yes, host<->val are mixed up here; can't see a way to avoid it. :(
957 if ($args{defrec} eq 'n') {
958 # Check if IP/address/zone/"subzone" is within the parent
959 if ($args{revrec} eq 'y') {
960 my $tmpip = NetAddr::IP->new(${$args{val}});
961 my $pname = $self->revName($args{id});
962 return ('FAIL',"${$args{val}} not within $pname")
963 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$tmpip);
964 # Normalize
965 ${$args{val}} = "$tmpip";
966 } else {
967 my $pname = $self->domainName($args{id});
968 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
969 }
970 } else {
971 return ('FAIL',"Delegation records are not permitted in default record sets");
972 }
973 return ('OK','OK');
974}
975
976
977##
978## Record data substitution subs
979##
980
981# Replace ZONE in hostname, or create (most of) the actual proper zone name
982sub _ZONE {
983 my $zone = shift;
984 my $string = shift;
985 my $fr = shift || 'f'; # flag for forward/reverse order? nb: ignored for IP
986 my $sep = shift || '-'; # Separator character - unlikely we'll ever need more than . or -
987
988 my $prefix;
989
990 $string =~ s/,/./ if !$zone->{isv6};
991 $string =~ s/,/::/ if $zone->{isv6};
992
993 # Subbing ZONE in the host. We need to properly ID the netblock range
994 # The subbed text should have "network IP with trailing zeros stripped" for
995 # blocks lined up on octet (for v4) or hex-quad (for v6) boundaries
996 # For blocks that do NOT line up on these boundaries, we take the most
997 # significant octet or 16-bit chunk of the "broadcast" IP and append it
998 # after a double-dash
999 # ie:
1000 # 8.0.0.0/6 -> 8.0.0.0 -> 11.255.255.255; sub should be 8--11
1001 # 10.0.0.0/12 -> 10.0.0.0 -> 10.0.0.0 -> 10.15.255.255; sub should be 10-0--15
1002 # 192.168.4.0/22 -> 192.168.4.0 -> 192.168.7.255; sub should be 192-168-4--7
1003 # 192.168.0.8/29 -> 192.168.0.8 -> 192.168.0.15; sub should be 192-168-0-8--15
1004 # Similar for v6
1005
1006 if (!$zone->{isv6}) { # IPv4
1007
1008 $prefix = $zone->network->addr; # Just In Case someone managed to slip in
1009 # a funky subnet that had host bits set.
1010 my $bc = $zone->broadcast->addr;
1011
1012 if ($zone->masklen > 24) {
1013 $bc =~ s/^\d+\.\d+\.\d+\.//;
1014 } elsif ($zone->masklen > 16) {
1015 $prefix =~ s/\.0$//;
1016 $bc =~ s/^\d+\.\d+\.//;
1017 } elsif ($zone->masklen > 8) {
1018 $bc =~ s/^\d+\.//;
1019 $prefix =~ s/\.0\.0$//;
1020 } else {
1021 $prefix =~ s/\.0\.0\.0$//;
1022 }
1023 if ($zone->masklen % 8) {
1024 $bc =~ s/(\.255)+$//;
1025 $prefix .= "--$bc"; #"--".zone->masklen; # use range or mask length?
1026 }
1027 if ($fr eq 'f') {
1028 $prefix =~ s/\.+/$sep/g;
1029 } else {
1030 $prefix = join($sep, reverse(split(/\./, $prefix)));
1031 }
1032
1033 } else { # IPv6
1034
1035 if ($fr eq 'f') {
1036
1037 $prefix = $zone->network->addr; # Just In Case someone managed to slip in
1038 # a funky subnet that had host bits set.
1039 my $bc = $zone->broadcast->addr;
1040 if (($zone->masklen % 16) != 0) {
1041 # Strip trailing :0 off $prefix, and :ffff off the broadcast IP
1042 for (my $i=0; $i<(7-int($zone->masklen / 16)); $i++) {
1043 $prefix =~ s/:0$//;
1044 $bc =~ s/:ffff$//;
1045 }
1046 # Strip the leading 16-bit chunks off the front of the broadcast IP
1047 $bc =~ s/^([a-f0-9]+:)+//;
1048 # Append the remaining 16-bit chunk to the prefix after "--"
1049 $prefix .= "--$bc";
1050 } else {
1051 # Strip off :0 from the end until we reach the netblock length.
1052 for (my $i=0; $i<(8-$zone->masklen / 16); $i++) {
1053 $prefix =~ s/:0$//;
1054 }
1055 }
1056 # Actually deal with the separator
1057 $prefix =~ s/:/$sep/g;
1058
1059 } else { # $fr eq 'f'
1060
1061 $prefix = $zone->network->full; # Just In Case someone managed to slip in
1062 # a funky subnet that had host bits set.
1063 my $bc = $zone->broadcast->full;
1064 $prefix =~ s/://g; # clean these out since they're not spaced right for this case
1065 $bc =~ s/://g;
1066 # Strip trailing 0 off $prefix, and f off the broadcast IP, to match the mask length
1067 for (my $i=0; $i<(31-int($zone->masklen / 4)); $i++) {
1068 $prefix =~ s/0$//;
1069 $bc =~ s/f$//;
1070 }
1071 # Split and reverse the order of the nibbles in the network/broadcast IPs
1072 # trim another 0 for nibble-aligned blocks first, but only if we really have a block, not an IP
1073 $prefix =~ s/0$// if $zone->masklen % 4 == 0 && $zone->masklen != 128;
1074 my @nbits = reverse split //, $prefix;
1075 my @bbits = reverse split //, $bc;
1076 # Handle the sub-nibble case. Eww. I feel dirty supporting this...
1077 $nbits[0] = "$nbits[0]-$bbits[0]" if ($zone->masklen % 4) != 0;
1078 # Glue it back together
1079 $prefix = join($sep, @nbits);
1080
1081 } # $fr ne 'f'
1082
1083 } # $zone->{isv6}
1084
1085 # Do the substitution, finally
1086 $string =~ s/ZONE/$prefix/;
1087 $string =~ s/--/-/ if $sep ne '-'; # - as separator needs extra help for sub-octet v4 netblocks
1088 return $string;
1089} # done _ZONE()
1090
1091# Not quite a substitution sub, but placed here as it's basically the inverse of above;
1092# given the .arpa zone name, return the CIDR netblock the zone is for.
1093# Supports v4 non-octet/non-classful netblocks as per the method outlined in the Grasshopper Book (2nd Ed p217-218)
1094# Does NOT support non-quad v6 netblocks via the same scheme; it shouldn't ever be necessary.
1095# Takes a nominal .arpa zone name, returns a success code and NetAddr::IP, or a fail code and message
1096sub _zone2cidr {
1097 my $zone = shift;
1098
1099 my $cidr;
1100 my $tmpcidr;
1101 my $warnmsg = '';
1102
1103 if ($zone =~ /\.in-addr\.arpa\.?$/) {
1104 # v4 revzone, formal zone name type
1105 my $tmpzone = $zone;
1106 $tmpzone =~ s/\.in-addr\.arpa\.?//;
1107 return ('FAIL', "Non-numerics in apparent IPv4 reverse zone name") if $tmpzone !~ /^(?:\d+-)?[\d\.]+$/;
1108
1109 # Snag the octet pieces
1110 my @octs = split /\./, $tmpzone;
1111
1112 # Map result of a range manipulation to a mask length change. Cheaper than finding the 2-root of $octets[0]+1.
1113 # Note we will not support /31 blocks, mostly due to issues telling "24-31" -> .24/29 apart from
1114 # "24-31" -> .24/31", with a litte bit of "/31 is icky".
1115 my %maskmap = ( 3 => 2, 7 => 3, 15 => 4, 31 => 5, 63 => 6, 127 => 7,
1116 30 => 2, 29 => 3, 28 => 4, 27 => 5, 26 => 6, 25 => 7
1117 );
1118
1119 # Handle "range" blocks, eg, 80-83.168.192.in-addr.arpa (192.168.80.0/22)
1120 # Need to take the size of the range to offset the basic octet-based mask length,
1121 # and make sure the first number in the range gets used as the network address for the block
1122 # Alternate form: The second number is actually the real netmask, not the end of the range.
1123 my $masklen = 0;
1124 if ($octs[0] =~ /^((\d+)-(\d+))$/) { # take the range...
1125 if (24 < $3 && $3 < 31) {
1126 # we have a real netmask
1127 $masklen = -$maskmap{$3};
1128 } else {
1129 # we have a range. NB: only real CIDR ranges are supported
1130 $masklen -= $maskmap{-(eval $1)}; # find the mask base...
1131 }
1132 $octs[0] = $2; # set the base octet of the range...
1133 }
1134 @octs = reverse @octs; # We can reverse the octet pieces now that we've extracted and munged any ranges
1135
1136# arguably we should only allow sub-octet range/mask in-addr.arpa
1137# specifications in the least significant octet, but the code is
1138# simpler if we deal with sub-octet delegations at any level.
1139
1140 # Now we find the "true" mask with the aid of the "base" calculated above
1141 if ($#octs == 0) {
1142 $masklen += 8;
1143 $tmpcidr = "$octs[0].0.0.0/$masklen"; # really hope we don't see one of these very often.
1144 } elsif ($#octs == 1) {
1145 $masklen += 16;
1146 $tmpcidr = "$octs[0].$octs[1].0.0/$masklen";
1147 } elsif ($#octs == 2) {
1148 $masklen += 24;
1149 $tmpcidr = "$octs[0].$octs[1].$octs[2].0/$masklen";
1150 } else {
1151 $masklen += 32;
1152 $tmpcidr = "$octs[0].$octs[1].$octs[2].$octs[3]/$masklen";
1153 }
1154
1155 } elsif ($zone =~ /\.ip6\.arpa$/) {
1156 # v6 revzone, formal zone name type
1157 my $tmpzone = $zone;
1158 $tmpzone =~ s/\.ip6\.arpa\.?//;
1159##fixme: if-n-when we decide we can support sub-nibble v6 zone names, we'll need to change this segment
1160 return ('FAIL', "Non-hexadecimals in apparent IPv6 reverse zone name") if $tmpzone !~ /^[a-fA-F\d\.]+$/;
1161 my @quads = reverse(split(/\./, $tmpzone));
1162 $warnmsg .= "Apparent sub-/64 IPv6 reverse zone\n" if $#quads > 15;
1163 my $nc;
1164 foreach (@quads) {
1165 $tmpcidr .= $_;
1166 $tmpcidr .= ":" if ++$nc % 4 == 0;
1167 }
1168 my $nq = 1 if $nc % 4 != 0;
1169 my $mask = $nc * 4; # need to do this here because we probably increment it below
1170 while ($nc++ % 4 != 0) {
1171 $tmpcidr .= "0";
1172 }
1173 $tmpcidr .= ($nq ? '::' : ':')."/$mask";
1174 }
1175
1176 # Just to be sure, use NetAddr::IP to validate. Saves a lot of nasty regex watching for valid octet values.
1177 return ('FAIL', "Invalid zone $zone (apparent netblock $tmpcidr)")
1178 unless $cidr = NetAddr::IP->new($tmpcidr);
1179
1180 if ($warnmsg) {
1181 $errstr = $warnmsg;
1182 return ('WARN', $cidr);
1183 }
1184 return ('OK', $cidr);
1185} # done _zone2cidr()
1186
1187# Record template %-parameter expansion, IPv4. Note that IPv6 doesn't
1188# really have a sane way to handle this type of expansion at the moment
1189# due to the size of the address space.
1190# Takes a reference to a template string to be expanded, and an IP to use in the replacement.
1191sub _template4_expand {
1192 my $tmpl = shift;
1193 my $ip = shift;
1194
1195 my @ipparts = split /\./, $ip;
1196 my @iphex;
1197 my @ippad;
1198 for (@ipparts) {
1199 push @iphex, sprintf("%x", $_);
1200 push @ippad, sprintf("%0.3u", $_);
1201 }
1202
1203 # IP substitutions in template records:
1204 #major patterns:
1205 #dashed IP, forward and reverse
1206 #dotted IP, forward and reverse (even if forward is... dumb)
1207 # -> %r for reverse, %i for forward, leading - or . to indicate separator, defaults to -
1208 # %r or %-r => %4d-%3d-%2d-%1d
1209 # %.r => %4d.%3d.%2d.%1d
1210 # %i or %-i => %1d-%2d-%3d-%4d
1211 # %.i => %1d.%2d.%3d.%4d
1212 $$tmpl =~ s/\%r/\%4d-\%3d-\%2d-\%1d/g;
1213 $$tmpl =~ s/\%([-.])r/\%4d$1\%3d$1\%2d$1\%1d/g;
1214 $$tmpl =~ s/\%i/\%1d-\%2d-\%3d-\%4d/g;
1215 $$tmpl =~ s/\%([-.])i/\%1d$1\%2d$1\%3d$1\%4d/g;
1216
1217 #hex-coded IP
1218 # %h
1219 $$tmpl =~ s/\%h/$iphex[0]$iphex[1]$iphex[2]$iphex[3]/g;
1220
1221 #IP as decimal-coded 32-bit value
1222 # %d
1223 my $iptmp = $ipparts[0]*256*256*256 + $ipparts[1]*256*256 + $ipparts[2]*256 + $ipparts[3];
1224 $$tmpl =~ s/\%d/$iptmp/g;
1225
1226 #minor patterns (per-octet)
1227 # %[1234][dh0]
1228 #octet
1229 #hex-coded octet
1230 #0-padded octet
1231 $$tmpl =~ s/\%([1234])d/$ipparts[$1-1]/g;
1232 $$tmpl =~ s/\%([1234])h/$iphex[$1-1]/g;
1233 $$tmpl =~ s/\%([1234])0/$ippad[$1-1]/g;
1234} # _template4_expand()
1235
1236
1237##
1238## Initialization and cleanup subs
1239##
1240
1241## DNSDB::loadConfig()
1242# Load the minimum required initial state (DB connect info) from a config file
1243# Load misc other bits while we're at it.
1244# Takes an optional hash that may contain:
1245# - basename and config path to look for
1246# Populates the %config and %def hashes
1247sub loadConfig {
1248 my %args = @_;
1249 $args{configfile} = '' if !$args{configfile};
1250
1251##fixme this is *intended* to load a system-default config template, and allow
1252# overriding on a per-tool or per-web-UI-instance basis with a secondary config
1253# file. The "default" config file can't be deleted in the current form.
1254
1255 my $deferr = ''; # place to put error from default config file in case we can't find either one
1256
1257 my $configroot = "/etc/dnsdb"; ##CFG_LEAF##
1258 $configroot = '' if $args{configfile} =~ m|^/|; # allow passed siteconfig to specify an arbitrary absolute path
1259 $args{configfile} .= ".conf" if $args{configfile} !~ /\.conf$/;
1260 my $defconfig = "$configroot/dnsdb.conf";
1261 my $siteconfig = "$configroot/$args{configfile}";
1262
1263 # System defaults
1264 __cfgload("$defconfig") or $deferr = $errstr;
1265
1266 # Per-site-ish settings.
1267 if ($args{configfile} ne '.conf') {
1268 unless (__cfgload("$siteconfig")) {
1269 $errstr = ($deferr ? "Error opening default config file $defconfig: $deferr\n" : '').
1270 "Error opening site config file $siteconfig";
1271 return;
1272 }
1273 }
1274
1275 # Munge log_failures.
1276 if ($config{log_failures} ne '1' && $config{log_failures} ne '0') {
1277 # true/false, on/off, yes/no all valid.
1278 if ($config{log_failures} =~ /^(?:true|false|on|off|yes|no)$/) {
1279 if ($config{log_failures} =~ /(?:true|on|yes)/) {
1280 $config{log_failures} = 1;
1281 } else {
1282 $config{log_failures} = 0;
1283 }
1284 } else {
1285 $errstr = "Bad log_failures setting $config{log_failures}";
1286 $config{log_failures} = 1;
1287 # Bad setting shouldn't be fatal.
1288 # return 2;
1289 }
1290 }
1291
1292 # All good, clear the error and go home.
1293 $errstr = '';
1294 return 1;
1295} # end loadConfig()
1296
1297
1298## DNSDB::__cfgload()
1299# Private sub to parse a config file and load it into %config
1300# Takes a filename
1301sub __cfgload {
1302 $errstr = '';
1303 my $cfgfile = shift;
1304
1305 if (open CFG, "<$cfgfile") {
1306 while (<CFG>) {
1307 chomp;
1308 s/^\s*//;
1309 next if /^#/;
1310 next if /^$/;
1311# hmm. more complex bits in this file might require [heading] headers, maybe?
1312# $mode = $1 if /^\[(a-z)+]/;
1313 # DB connect info
1314 $config{dbname} = $1 if /^dbname\s*=\s*([a-z0-9_.-]+)/i;
1315 $config{dbuser} = $1 if /^dbuser\s*=\s*([a-z0-9_.-]+)/i;
1316 $config{dbpass} = $1 if /^dbpass\s*=\s*([a-z0-9_.-]+)/i;
1317 $config{dbhost} = $1 if /^dbhost\s*=\s*([a-z0-9_.-]+)/i;
1318 # SOA defaults
1319 $def{contact} = $1 if /^contact\s*=\s*([a-z0-9_.-]+)/i;
1320 $def{prins} = $1 if /^prins\s*=\s*([a-z0-9_.-]+)/i;
1321 $def{soattl} = $1 if /^soattl\s*=\s*(\d+)/i;
1322 $def{refresh} = $1 if /^refresh\s*=\s*(\d+)/i;
1323 $def{retry} = $1 if /^retry\s*=\s*(\d+)/i;
1324 $def{expire} = $1 if /^expire\s*=\s*(\d+)/i;
1325 $def{minttl} = $1 if /^minttl\s*=\s*(\d+)/i;
1326 $def{ttl} = $1 if /^ttl\s*=\s*(\d+)/i;
1327 # Mail settings
1328 $config{mailhost} = $1 if /^mailhost\s*=\s*([a-z0-9_.-]+)/i;
1329 $config{mailnotify} = $1 if /^mailnotify\s*=\s*([a-z0-9_.\@-]+)/i;
1330 $config{mailsender} = $1 if /^mailsender\s*=\s*([a-z0-9_.\@-]+)/i;
1331 $config{mailname} = $1 if /^mailname\s*=\s*([a-z0-9\s_.-]+)/i;
1332 $config{orgname} = $1 if /^orgname\s*=\s*([a-z0-9\s_.,'-]+)/i;
1333 $config{domain} = $1 if /^domain\s*=\s*([a-z0-9_.-]+)/i;
1334 # session - note this is fed directly to CGI::Session
1335 $config{timeout} = $1 if /^[tT][iI][mM][eE][oO][uU][tT]\s*=\s*(\d+[smhdwMy]?)/;
1336 $config{sessiondir} = $1 if m{^sessiondir\s*=\s*([a-z0-9/_.-]+)}i;
1337 # misc
1338 $config{log_failures} = $1 if /^log_failures\s*=\s*([a-z01]+)/i;
1339 $config{perpage} = $1 if /^perpage\s*=\s*(\d+)/i;
1340 $config{exportcache} = $1 if m{^exportcache\s*=\s*([a-z0-9/_.-]+)}i;
1341 # RPC options
1342 $config{rpcmode} = $1 if /^rpc_mode\s*=\s*(socket|HTTP|XMLRPC)\s*$/i;
1343 $config{maxfcgi} = $1 if /^max_fcgi_requests\s*=\s*(\d+)\s*$/i;
1344 if (my ($tmp) = /^rpc_iplist\s*=\s*(.+)/i) {
1345 my @ips = split /[,\s]+/, $tmp;
1346 my $rpcsys = shift @ips;
1347 push @{$config{rpcacl}{$rpcsys}}, @ips;
1348 }
1349 }
1350 close CFG;
1351 } else {
1352 $errstr = $!;
1353 return;
1354 }
1355 return 1;
1356} # end __cfgload()
1357
1358
1359## DNSDB::connectDB()
1360# Creates connection to DNS database.
1361# Requires the database name, username, and password.
1362# Returns a handle to the db or undef on failure.
1363# Set up for a PostgreSQL db; could be any transactional DBMS with the
1364# right changes.
1365# Called by new(); not intended to be called publicly.
1366sub connectDB {
1367 $errstr = '';
1368 my $dbname = shift;
1369 my $user = shift;
1370 my $pass = shift;
1371 my $dbh;
1372 my $DSN = "DBI:Pg:dbname=$dbname";
1373
1374 my $host = shift;
1375 $DSN .= ";host=$host" if $host;
1376
1377# Note that we want to autocommit by default, and we will turn it off locally as necessary.
1378# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
1379 $dbh = DBI->connect($DSN, $user, $pass, {
1380 AutoCommit => 1,
1381 PrintError => 0
1382 });
1383 if (!$dbh) {
1384 $errstr = $DBI::errstr;
1385 return;
1386 }
1387#) if(!$dbh);
1388
1389 local $dbh->{RaiseError} = 1;
1390
1391 eval {
1392##fixme: initialize the DB if we can't find the table (since, by definition, there's
1393# nothing there if we can't select from it...)
1394 my $tblsth = $dbh->prepare("SELECT count(*) FROM pg_catalog.pg_class WHERE relkind='r' AND relname=?");
1395 my ($tblcount) = $dbh->selectrow_array($tblsth, undef, ('misc'));
1396# return (undef,$DBI::errstr) if $dbh->err;
1397
1398#if ($tblcount == 0) {
1399# # create tables one at a time, checking for each.
1400# return (undef, "check table misc missing");
1401#}
1402
1403# Return here if we can't select.
1404# This should retrieve the dbversion key.
1405 my $sth = $dbh->prepare("SELECT key,value FROM misc WHERE misc_id=1");
1406 $sth->execute();
1407# return (undef,$DBI::errstr) if ($sth->err);
1408
1409##fixme: do stuff to the DB on version mismatch
1410# x.y series should upgrade on $DNSDB::VERSION > misc(key=>version)
1411# DB should be downward-compatible; column defaults should give sane (if possibly
1412# useless-and-needs-help) values in columns an older software stack doesn't know about.
1413
1414# See if the select returned anything (or null data). This should
1415# succeed if the select executed, but...
1416 $sth->fetchrow();
1417# return (undef,$DBI::errstr) if ($sth->err);
1418
1419 $sth->finish;
1420
1421 }; # wrapped DB checks
1422 if ($@) {
1423 $errstr = $@;
1424 return;
1425 }
1426
1427# If we get here, we should be OK.
1428 return $dbh;
1429} # end connectDB
1430
1431
1432## DNSDB::finish()
1433# Cleans up after database handles and so on.
1434# Requires a database handle
1435sub finish {
1436 my $self = shift;
1437 $self->{dbh}->disconnect;
1438} # end finish
1439
1440
1441## DNSDB::initGlobals()
1442# Initialize global variables
1443# NB: this does NOT include web-specific session variables!
1444sub initGlobals {
1445 my $self = shift;
1446 my $dbh = $self->{dbh};
1447
1448# load record types from database
1449 my $sth = $dbh->prepare("SELECT val,name,stdflag FROM rectypes");
1450 $sth->execute;
1451 while (my ($recval,$recname,$stdflag) = $sth->fetchrow_array()) {
1452 $typemap{$recval} = $recname;
1453 $reverse_typemap{$recname} = $recval;
1454 # now we fill the record validation function hash
1455 if ($stdflag < 5) {
1456 my $fn = "_validate_$recval";
1457 $validators{$recval} = \&$fn;
1458 } else {
1459 my $fn = "sub { return ('FAIL','Type $recval ($recname) not supported'); }";
1460 $validators{$recval} = eval $fn;
1461 }
1462 }
1463} # end initGlobals
1464
1465
1466## DNSDB::initRPC()
1467# Takes a remote username and remote fullname.
1468# Sets up the RPC logging-pseudouser if needed.
1469# Sets the %userdata hash for logging.
1470# Returns undef on failure
1471sub initRPC {
1472 my $self = shift;
1473 my $dbh = $self->{dbh};
1474 my %args = @_;
1475
1476 return if !$args{username};
1477 return if !$args{fullname};
1478
1479 $args{username} = "$args{username}/$args{rpcsys}";
1480
1481 my $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status".
1482 " FROM users WHERE username=?", undef, ($args{username}) );
1483 if (!$tmpuser) {
1484 $dbh->do("INSERT INTO users (username,password,firstname,type) VALUES (?,'RPC',?,'R')", undef,
1485 ($args{username}, $args{fullname}) );
1486 $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status".
1487 " FROM users WHERE username=?", undef, ($args{username}) );
1488 }
1489 $tmpuser->{lastname} = '' if !$tmpuser->{lastname};
1490 $self->{loguserid} = $tmpuser->{userid};
1491 $self->{logusername} = $tmpuser->{username};
1492 $self->{logfullname} = "$tmpuser->{firstname} $tmpuser->{lastname} ($args{rpcsys})";
1493 return 1 if $tmpuser;
1494} # end initRPC()
1495
1496
1497## DNSDB::login()
1498# Takes a database handle, username and password
1499# Returns a userdata hash (UID, GID, username, fullname parts) if username exists,
1500# password matches the one on file, and account is not disabled
1501# Returns undef otherwise
1502sub login {
1503 my $self = shift;
1504 my $dbh = $self->{dbh};
1505 my $user = shift;
1506 my $pass = shift;
1507
1508 my $userinfo = $dbh->selectrow_hashref("SELECT user_id,group_id,password,firstname,lastname,status".
1509 " FROM users WHERE username=?",
1510 undef, ($user) );
1511 return if !$userinfo;
1512 return if !$userinfo->{status};
1513
1514 if ($userinfo->{password} =~ m|^\$1\$([A-Za-z0-9/.]+)\$|) {
1515 # native passwords (crypt-md5)
1516 return if $userinfo->{password} ne unix_md5_crypt($pass,$1);
1517 } elsif ($userinfo->{password} =~ /^[0-9a-f]{32}$/) {
1518 # VegaDNS import (hex-coded MD5)
1519 return if $userinfo->{password} ne md5_hex($pass);
1520 } else {
1521 # plaintext (convenient now and then)
1522 return if $userinfo->{password} ne $pass;
1523 }
1524
1525 return $userinfo;
1526} # end login()
1527
1528
1529## DNSDB::initActionLog()
1530# Set up action logging. Takes a database handle and user ID
1531# Sets some internal globals and Does The Right Thing to set up a logging channel.
1532# This sets up _log() to spew out log entries to the defined channel without worrying
1533# about having to open a file or a syslog channel
1534##fixme Need to call _initActionLog_blah() for various logging channels, configured
1535# via dnsdb.conf, in $config{log_channel} or something
1536# See https://secure.deepnet.cx/trac/dnsadmin/ticket/21
1537sub initActionLog {
1538 my $self = shift;
1539 my $dbh = $self->{dbh};
1540 my $uid = shift;
1541
1542 return if !$uid;
1543
1544 # snag user info for logging. there's got to be a way to not have to pass this back
1545 # and forth from a caller, but web usage means no persistence we can rely on from
1546 # the server side.
1547 my ($username,$fullname) = $dbh->selectrow_array("SELECT username, firstname || ' ' || lastname".
1548 " FROM users WHERE user_id=?", undef, ($uid));
1549##fixme: errors are unpossible!
1550
1551 $self->{logusername} = $username;
1552 $self->{loguserid} = $uid;
1553 $self->{logfullname} = $fullname;
1554
1555 # convert to real check once we have other logging channels
1556 # if ($config{log_channel} eq 'sql') {
1557 # Open Log, Sez Me!
1558 # }
1559
1560} # end initActionLog
1561
1562
1563## DNSDB::getPermissions()
1564# Get permissions from DB
1565# Requires DB handle, group or user flag, ID, and hashref.
1566sub getPermissions {
1567 my $self = shift;
1568 my $dbh = $self->{dbh};
1569
1570 my $type = shift;
1571 my $id = shift;
1572 my $hash = shift;
1573
1574 my $sql = qq(
1575 SELECT
1576 p.admin,p.self_edit,
1577 p.group_create,p.group_edit,p.group_delete,
1578 p.user_create,p.user_edit,p.user_delete,
1579 p.domain_create,p.domain_edit,p.domain_delete,
1580 p.record_create,p.record_edit,p.record_delete,p.record_locchg,
1581 p.location_create,p.location_edit,p.location_delete,p.location_view
1582 FROM permissions p
1583 );
1584 if ($type eq 'group') {
1585 $sql .= qq(
1586 JOIN groups g ON g.permission_id=p.permission_id
1587 WHERE g.group_id=?
1588 );
1589 } else {
1590 $sql .= qq(
1591 JOIN users u ON u.permission_id=p.permission_id
1592 WHERE u.user_id=?
1593 );
1594 }
1595
1596 my $sth = $dbh->prepare($sql);
1597
1598 $sth->execute($id) or die "argh: ".$sth->errstr;
1599
1600# my $permref = $sth->fetchrow_hashref;
1601# return $permref;
1602# $hash = $permref;
1603# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
1604 ($hash->{admin},$hash->{self_edit},
1605 $hash->{group_create},$hash->{group_edit},$hash->{group_delete},
1606 $hash->{user_create},$hash->{user_edit},$hash->{user_delete},
1607 $hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
1608 $hash->{record_create},$hash->{record_edit},$hash->{record_delete},$hash->{record_locchg},
1609 $hash->{location_create},$hash->{location_edit},$hash->{location_delete},$hash->{location_view}
1610 ) = $sth->fetchrow_array;
1611
1612} # end getPermissions()
1613
1614
1615## DNSDB::changePermissions()
1616# Update an ACL entry
1617# Takes a db handle, type, owner-id, and hashref for the changed permissions.
1618sub changePermissions {
1619 my $self = shift;
1620 my $dbh = $self->{dbh};
1621 my $type = shift;
1622 my $id = shift;
1623 my $newperms = shift;
1624 my $inherit = shift || 0;
1625
1626 my $resultmsg = '';
1627
1628 # see if we're switching from inherited to custom. for bonus points,
1629 # snag the permid and parent permid anyway, since we'll need the permid
1630 # to set/alter custom perms, and both if we're switching from custom to
1631 # inherited.
1632 my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id,".
1633 ($type eq 'user' ? 'u.group_id,u.username' : 'u.parent_group_id,u.group_name').
1634 " FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
1635 " JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
1636 " WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
1637 $sth->execute($id);
1638
1639 my ($wasinherited,$permid,$parpermid,$parid,$name) = $sth->fetchrow_array;
1640
1641# hack phtoui
1642# group id 1 is "special" in that it's it's own parent (err... possibly.)
1643# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
1644 $wasinherited = 0 if ($type eq 'group' && $id == 1);
1645
1646 local $dbh->{AutoCommit} = 0;
1647 local $dbh->{RaiseError} = 1;
1648
1649 # Wrap all the SQL in a transaction
1650 eval {
1651 if ($inherit) {
1652
1653 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
1654 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
1655 $dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
1656
1657 } else {
1658
1659 if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
1660##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
1661# ... if'n'when we have groups with fully inherited permissions.
1662 # SQL is coo
1663 $dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
1664 "SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
1665 ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
1666 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
1667 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
1668 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
1669 }
1670
1671 # and now set the permissions we were passed
1672 foreach (@permtypes) {
1673 if (defined ($newperms->{$_})) {
1674 $dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
1675 }
1676 }
1677
1678 } # (inherited->)? custom
1679
1680 if ($type eq 'user') {
1681 $resultmsg = "Updated permissions for user $name";
1682 } else {
1683 $resultmsg = "Updated default permissions for group $name";
1684 }
1685 $self->_log(group_id => ($type eq 'user' ? $parid : $id), entry => $resultmsg);
1686 $dbh->commit;
1687 }; # end eval
1688 if ($@) {
1689 my $msg = $@;
1690 eval { $dbh->rollback; };
1691 return ('FAIL',"Error changing permissions: $msg");
1692 }
1693
1694 return ('OK',$resultmsg);
1695} # end changePermissions()
1696
1697
1698## DNSDB::comparePermissions()
1699# Compare two permission hashes
1700# Returns '>', '<', '=', '!'
1701sub comparePermissions {
1702 my $p1 = shift;
1703 my $p2 = shift;
1704
1705 my $retval = '='; # assume equality until proven otherwise
1706
1707 no warnings "uninitialized";
1708
1709 foreach (@permtypes) {
1710 next if $p1->{$_} == $p2->{$_}; # equal is good
1711 if ($p1->{$_} && !$p2->{$_}) {
1712 if ($retval eq '<') { # if we've already found an unequal pair where
1713 $retval = '!'; # $p2 has more access, and we now find a pair
1714 last; # where $p1 has more access, the overall access
1715 } # is neither greater or lesser, it's unequal.
1716 $retval = '>';
1717 }
1718 if (!$p1->{$_} && $p2->{$_}) {
1719 if ($retval eq '>') { # if we've already found an unequal pair where
1720 $retval = '!'; # $p1 has more access, and we now find a pair
1721 last; # where $p2 has more access, the overall access
1722 } # is neither greater or lesser, it's unequal.
1723 $retval = '<';
1724 }
1725 }
1726 return $retval;
1727} # end comparePermissions()
1728
1729
1730## DNSDB::changeGroup()
1731# Change group ID of an entity
1732# Takes a database handle, entity type, entity ID, and new group ID
1733sub changeGroup {
1734 my $self = shift;
1735 my $dbh = $self->{dbh};
1736 my $type = shift;
1737 my $id = shift;
1738 my $newgrp = shift;
1739
1740##fixme: fail on not enough args
1741 #return ('FAIL', "Missing
1742
1743 return ('FAIL', "Can't change the group of a $type")
1744 unless grep /^$type$/, ('domain','revzone','user','group'); # could be extended for defrecs?
1745
1746 # Collect some names for logging and messages
1747 my $entname;
1748 if ($type eq 'domain') {
1749 $entname = $self->domainName($id);
1750 } elsif ($type eq 'revzone') {
1751 $entname = $self->revName($id);
1752 } elsif ($type eq 'user') {
1753 $entname = $self->userFullName($id, '%u');
1754 } elsif ($type eq 'group') {
1755 $entname = $self->groupName($id);
1756 }
1757
1758 my ($oldgid) = $dbh->selectrow_array("SELECT group_id FROM $par_tbl{$type} WHERE $id_col{$type}=?",
1759 undef, ($id));
1760 my $oldgname = $self->groupName($oldgid);
1761 my $newgname = $self->groupName($newgrp);
1762
1763 return ('FAIL', "Can't move things into a group that doesn't exist") if !$newgname;
1764
1765 return ('WARN', "Nothing to do, new group is the same as the old group") if $oldgid == $newgrp;
1766
1767 # Allow transactions, and raise an exception on errors so we can catch it later.
1768 # Use local to make sure these get "reset" properly on exiting this block
1769 local $dbh->{AutoCommit} = 0;
1770 local $dbh->{RaiseError} = 1;
1771
1772 eval {
1773 $dbh->do("UPDATE $par_tbl{$type} SET group_id=? WHERE $id_col{$type}=?", undef, ($newgrp, $id));
1774 # Log the change in both the old and new groups
1775 $self->_log(group_id => $oldgid, entry => "Moved $type $entname from $oldgname to $newgname");
1776 $self->_log(group_id => $newgrp, entry => "Moved $type $entname from $oldgname to $newgname");
1777 $dbh->commit;
1778 };
1779 if ($@) {
1780 my $msg = $@;
1781 eval { $dbh->rollback; };
1782 if ($config{log_failures}) {
1783 $self->_log(group_id => $oldgid, entry => "Error moving $type $entname to $newgname: $msg");
1784 $dbh->commit; # since we enabled transactions earlier
1785 }
1786 return ('FAIL',"Error moving $type $entname to $newgname: $msg");
1787 }
1788
1789 return ('OK',"Moved $type $entname from $oldgname to $newgname");
1790} # end changeGroup()
1791
1792
1793##
1794## Processing subs
1795##
1796
1797## DNSDB::addDomain()
1798# Add a domain
1799# Takes a database handle, domain name, numeric group, boolean(ish) state (active/inactive),
1800# and user info hash (for logging).
1801# Returns a status code and message
1802sub addDomain {
1803 $errstr = '';
1804 my $self = shift;
1805 my $dbh = $self->{dbh};
1806 my $domain = shift;
1807 return ('FAIL',"Domain must not be blank\n") if !$domain;
1808 my $group = shift;
1809 return ('FAIL',"Group must be specified\n") if !defined($group);
1810 my $state = shift;
1811 return ('FAIL',"Domain status must be specified\n") if !defined($state);
1812
1813 $state = 1 if $state =~ /^active$/;
1814 $state = 1 if $state =~ /^on$/;
1815 $state = 0 if $state =~ /^inactive$/;
1816 $state = 0 if $state =~ /^off$/;
1817
1818 return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/;
1819
1820 return ('FAIL', "Invalid characters in domain") if $domain !~ /^[a-zA-Z0-9_.-]+$/;
1821
1822 my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)");
1823 my $dom_id;
1824
1825# quick check to start to see if we've already got one
1826 $sth->execute($domain);
1827 ($dom_id) = $sth->fetchrow_array;
1828
1829 return ('FAIL', "Domain already exists") if $dom_id;
1830
1831 # Allow transactions, and raise an exception on errors so we can catch it later.
1832 # Use local to make sure these get "reset" properly on exiting this block
1833 local $dbh->{AutoCommit} = 0;
1834 local $dbh->{RaiseError} = 1;
1835
1836 # Wrap all the SQL in a transaction
1837 eval {
1838 # insert the domain...
1839 $dbh->do("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)", undef, ($domain, $group, $state));
1840
1841 # get the ID...
1842 ($dom_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
1843 undef, ($domain));
1844
1845 $self->_log(domain_id => $dom_id, group_id => $group,
1846 entry => "Added ".($state ? 'active' : 'inactive')." domain $domain");
1847
1848 # ... and now we construct the standard records from the default set. NB: group should be variable.
1849 my $sth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
1850 my $sth_in = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,distance,weight,port,ttl)".
1851 " VALUES ($dom_id,?,?,?,?,?,?,?)");
1852 $sth->execute($group);
1853 while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $sth->fetchrow_array()) {
1854 $host =~ s/DOMAIN/$domain/g;
1855 $val =~ s/DOMAIN/$domain/g;
1856 $sth_in->execute($host,$type,$val,$dist,$weight,$port,$ttl);
1857 if ($typemap{$type} eq 'SOA') {
1858 my @tmp1 = split /:/, $host;
1859 my @tmp2 = split /:/, $val;
1860 $self->_log(domain_id => $dom_id, group_id => $group,
1861 entry => "[new $domain] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
1862 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl");
1863 } else {
1864 my $logentry = "[new $domain] Added record '$host $typemap{$type}";
1865 $logentry .= " [distance $dist]" if $typemap{$type} eq 'MX';
1866 $logentry .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$type} eq 'SRV';
1867 $self->_log(domain_id => $dom_id, group_id => $group,
1868 entry => $logentry." $val', TTL $ttl");
1869 }
1870 }
1871
1872 # once we get here, we should have suceeded.
1873 $dbh->commit;
1874 }; # end eval
1875
1876 if ($@) {
1877 my $msg = $@;
1878 eval { $dbh->rollback; };
1879 $self->_log(group_id => $group, entry => "Failed adding domain $domain ($msg)")
1880 if $config{log_failures};
1881 $dbh->commit; # since we enabled transactions earlier
1882 return ('FAIL',$msg);
1883 } else {
1884 return ('OK',$dom_id);
1885 }
1886} # end addDomain
1887
1888
1889## DNSDB::delZone()
1890# Delete a forward or reverse zone.
1891# Takes a database handle, zone ID, and forward/reverse flag.
1892# for now, just delete the records, then the domain.
1893# later we may want to archive it in some way instead (status code 2, for example?)
1894sub delZone {
1895 my $self = shift;
1896 my $dbh = $self->{dbh};
1897 my $zoneid = shift;
1898 my $revrec = shift;
1899
1900 # Allow transactions, and raise an exception on errors so we can catch it later.
1901 # Use local to make sure these get "reset" properly on exiting this block
1902 local $dbh->{AutoCommit} = 0;
1903 local $dbh->{RaiseError} = 1;
1904
1905 my $msg = '';
1906 my $failmsg = '';
1907 my $zone = ($revrec eq 'n' ? $self->domainName($zoneid) : $self->revName($zoneid));
1908
1909 return ('FAIL', ($revrec eq 'n' ? 'Domain' : 'Reverse zone')." ID $zoneid doesn't exist") if !$zone;
1910
1911 # Set this up here since we may use if if $config{log_failures} is enabled
1912 my %loghash;
1913 $loghash{domain_id} = $zoneid if $revrec eq 'n';
1914 $loghash{rdns_id} = $zoneid if $revrec eq 'y';
1915 $loghash{group_id} = $self->parentID(
1916 id => $zoneid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec);
1917
1918 # Wrap all the SQL in a transaction
1919 eval {
1920 # Disentangle custom record types before removing the
1921 # ones that are only in the zone to be deleted
1922 if ($revrec eq 'n') {
1923 my $sth = $dbh->prepare("UPDATE records SET type=?,domain_id=0 WHERE domain_id=? AND type=?");
1924 $failmsg = "Failure converting multizone types to single-zone";
1925 $sth->execute($reverse_typemap{PTR}, $zoneid, 65280);
1926 $sth->execute($reverse_typemap{PTR}, $zoneid, 65281);
1927 $sth->execute(65282, $zoneid, 65283);
1928 $sth->execute(65282, $zoneid, 65284);
1929 $failmsg = "Failure removing domain records";
1930 $dbh->do("DELETE FROM records WHERE domain_id=?", undef, ($zoneid));
1931 $failmsg = "Failure removing domain";
1932 $dbh->do("DELETE FROM domains WHERE domain_id=?", undef, ($zoneid));
1933 } else {
1934 my $sth = $dbh->prepare("UPDATE records SET type=?,rdns_id=0 WHERE rdns_id=? AND type=?");
1935 $failmsg = "Failure converting multizone types to single-zone";
1936 $sth->execute($reverse_typemap{A}, $zoneid, 65280);
1937 $sth->execute($reverse_typemap{AAAA}, $zoneid, 65281);
1938# We don't have an "A template" or "AAAA template" type, although it might be useful for symmetry.
1939# $sth->execute(65286?, $zoneid, 65283);
1940# $sth->execute(65286?, $zoneid, 65284);
1941 $failmsg = "Failure removing reverse records";
1942 $dbh->do("DELETE FROM records WHERE rdns_id=?", undef, ($zoneid));
1943 $failmsg = "Failure removing reverse zone";
1944 $dbh->do("DELETE FROM revzones WHERE rdns_id=?", undef, ($zoneid));
1945 }
1946
1947 $msg = "Deleted ".($revrec eq 'n' ? 'domain' : 'reverse zone')." $zone";
1948 $loghash{entry} = $msg;
1949 $self->_log(%loghash);
1950
1951 # once we get here, we should have suceeded.
1952 $dbh->commit;
1953 }; # end eval
1954
1955 if ($@) {
1956 $msg = $@;
1957 eval { $dbh->rollback; };
1958 $loghash{entry} = "Error deleting $zone: $msg ($failmsg)";
1959 if ($config{log_failures}) {
1960 $self->_log(%loghash);
1961 $dbh->commit; # since we enabled transactions earlier
1962 }
1963 return ('FAIL', $loghash{entry});
1964 } else {
1965 return ('OK', $msg);
1966 }
1967
1968} # end delZone()
1969
1970
1971## DNSDB::domainName()
1972# Return the domain name based on a domain ID
1973# Takes a database handle and the domain ID
1974# Returns the domain name or undef on failure
1975sub domainName {
1976 $errstr = '';
1977 my $self = shift;
1978 my $dbh = $self->{dbh};
1979 my $domid = shift;
1980 my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
1981 $errstr = $DBI::errstr if !$domname;
1982 return $domname if $domname;
1983} # end domainName()
1984
1985
1986## DNSDB::revName()
1987# Return the reverse zone name based on an rDNS ID
1988# Takes a database handle and the rDNS ID
1989# Returns the reverse zone name or undef on failure
1990sub revName {
1991 $errstr = '';
1992 my $self = shift;
1993 my $dbh = $self->{dbh};
1994 my $revid = shift;
1995 my ($revname) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id=?", undef, ($revid) );
1996 $errstr = $DBI::errstr if !$revname;
1997 return $revname if $revname;
1998} # end revName()
1999
2000
2001## DNSDB::domainID()
2002# Takes a database handle and domain name
2003# Returns the domain ID number
2004sub domainID {
2005 $errstr = '';
2006 my $self = shift;
2007 my $dbh = $self->{dbh};
2008 my $domain = shift;
2009 my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
2010 undef, ($domain) );
2011 $errstr = $DBI::errstr if !$domid;
2012 return $domid if $domid;
2013} # end domainID()
2014
2015
2016## DNSDB::revID()
2017# Takes a database handle and reverse zone name
2018# Returns the rDNS ID number
2019sub revID {
2020 $errstr = '';
2021 my $self = shift;
2022 my $dbh = $self->{dbh};
2023 my $revzone = shift;
2024 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ($revzone) );
2025 $errstr = $DBI::errstr if !$revid;
2026 return $revid if $revid;
2027} # end revID()
2028
2029
2030## DNSDB::addRDNS
2031# Adds a reverse DNS zone
2032# Takes a database handle, CIDR block, reverse DNS pattern, numeric group,
2033# and boolean(ish) state (active/inactive)
2034# Returns a status code and message
2035sub addRDNS {
2036 my $self = shift;
2037 my $dbh = $self->{dbh};
2038 my $zone = NetAddr::IP->new(shift);
2039
2040 return ('FAIL',"Zone name must be a valid CIDR netblock") unless ($zone && $zone->addr !~ /^0/);
2041 my $revpatt = shift; # construct a custom (A/AAAA+)? PTR template record
2042 my $group = shift;
2043 my $state = shift;
2044 my $defloc = shift || '';
2045
2046 $state = 1 if $state =~ /^active$/;
2047 $state = 1 if $state =~ /^on$/;
2048 $state = 0 if $state =~ /^inactive$/;
2049 $state = 0 if $state =~ /^off$/;
2050
2051 return ('FAIL',"Invalid zone status") if $state !~ /^\d+$/;
2052
2053# quick check to start to see if we've already got one
2054 my ($rdns_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ("$zone"));
2055
2056 return ('FAIL', "Zone already exists") if $rdns_id;
2057
2058 # Allow transactions, and raise an exception on errors so we can catch it later.
2059 # Use local to make sure these get "reset" properly on exiting this block
2060 local $dbh->{AutoCommit} = 0;
2061 local $dbh->{RaiseError} = 1;
2062
2063 my $warnstr = '';
2064 my $defttl = 3600; # 1 hour should be reasonable. And unless things have gone horribly
2065 # wrong, we should have a value to override this anyway.
2066
2067 # Wrap all the SQL in a transaction
2068 eval {
2069 # insert the zone...
2070 $dbh->do("INSERT INTO revzones (revnet,group_id,status,default_location) VALUES (?,?,?,?)", undef,
2071 ($zone, $group, $state, $defloc) );
2072
2073 # get the ID...
2074 ($rdns_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')");
2075
2076 $self->_log(rdns_id => $rdns_id, group_id => $group,
2077 entry => "Added ".($state ? 'active' : 'inactive')." reverse zone $zone");
2078
2079 # ... and now we construct the standard records from the default set. NB: group should be variable.
2080 my $sth = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
2081 my $sth_in = $dbh->prepare("INSERT INTO records (rdns_id,domain_id,host,type,val,ttl,location)".
2082 " VALUES ($rdns_id,?,?,?,?,?,?)");
2083 $sth->execute($group);
2084 while (my ($host,$type,$val,$ttl) = $sth->fetchrow_array()) {
2085 # Silently skip v4/v6 mismatches. This is not an error, this is expected.
2086 if ($zone->{isv6}) {
2087 next if ($type == 65280 || $type == 65283);
2088 } else {
2089 next if ($type == 65281 || $type == 65284);
2090 }
2091
2092 $host =~ s/ADMINDOMAIN/$config{domain}/g;
2093
2094 # Check to make sure the IP stubs will fit in the zone. Under most usage failures here should be rare.
2095 # On failure, tack a note on to a warning string and continue without adding this record.
2096 # While we're at it, we substitute $zone for ZONE in the value.
2097 if ($val eq 'ZONE') {
2098 # If we've got a pattern, we skip the default record version on (A+)PTR-template types
2099 next if $revpatt && ($type == 65282 || $type == 65283);
2100##fixme? do we care if we have multiple whole-zone templates?
2101 $val = $zone->network;
2102 } elsif ($val =~ /ZONE/) {
2103 my $tmpval = $val;
2104 $tmpval =~ s/ZONE//;
2105 # Bend the rules and allow single-trailing-number PTR or PTR template records to be inserted
2106 # as either v4 or v6. May make this an off-by-default config flag
2107 # Note that the origin records that may trigger this **SHOULD** already have ZONE,\d
2108 if ($type == 12 || $type == 65282) {
2109 $tmpval =~ s/[,.]/::/ if ($tmpval =~ /^[,.]\d+$/ && $zone->{isv6});
2110 $tmpval =~ s/[,:]+/./ if ($tmpval =~ /^(?:,|::)\d+$/ && !$zone->{isv6});
2111 }
2112 my $addr;
2113 if ($self->_ipparent('n', 'y', \$tmpval, $rdns_id, \$addr)) {
2114 $val = $addr->addr;
2115 } else {
2116 $warnstr .= "\nDefault record '$val $typemap{$type} $host' doesn't fit in $zone, skipping";
2117 next;
2118 }
2119 }
2120
2121 # Substitute $zone for ZONE in the hostname, but only for non-NS records.
2122 # NS records get this substitution on the value instead.
2123 $host = _ZONE($zone, $host) if $type != 2;
2124
2125 # Fill in the forward domain ID if we can find it, otherwise:
2126 # Coerce type down to PTR or PTR template if we can't
2127 my $domid = 0;
2128 if ($type >= 65280) {
2129 if (!($domid = $self->_hostparent($host))) {
2130 $warnstr .= "\nRecord added as PTR instead of $typemap{$type}; domain not found for $host";
2131 $type = $reverse_typemap{PTR};
2132 $domid = 0; # just to be explicit.
2133 }
2134 }
2135
2136 $sth_in->execute($domid,$host,$type,$val,$ttl,$defloc);
2137
2138 if ($typemap{$type} eq 'SOA') {
2139 my @tmp1 = split /:/, $host;
2140 my @tmp2 = split /:/, $val;
2141 $self->_log(rdns_id => $rdns_id, group_id => $group,
2142 entry => "[new $zone] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
2143 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl");
2144 $defttl = $tmp2[3];
2145 } else {
2146 my $logentry = "[new $zone] Added record '$host $typemap{$type} $val', TTL $ttl";
2147 $logentry .= ", default location ".$self->getLoc($defloc)->{description} if $defloc;
2148 $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group, entry => $logentry);
2149 }
2150 }
2151
2152 # Generate record based on provided pattern.
2153 if ($revpatt) {
2154 my $host;
2155 my $type = ($zone->{isv6} ? 65284 : 65283);
2156 my $val = $zone->network;
2157
2158 # Substitute $zone for ZONE in the hostname.
2159 $host = _ZONE($zone, $revpatt);
2160
2161 my $domid = 0;
2162 if (!($domid = $self->_hostparent($host))) {
2163 $warnstr .= "\nDefault pattern added as PTR template instead of $typemap{$type}; domain not found for $host";
2164 $type = 65282;
2165 $domid = 0; # just to be explicit.
2166 }
2167
2168 $sth_in->execute($domid,$host,$type,$val,$defttl,$defloc);
2169 my $logentry = "[new $zone] Added record '$host $typemap{$type}";
2170 $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group,
2171 entry => $logentry." $val', TTL $defttl from pattern");
2172 }
2173
2174 # If there are warnings (presumably about default records skipped for cause) log them
2175 $self->_log(rdns_id => $rdns_id, group_id => $group, entry => "Warning(s) adding $zone:$warnstr")
2176 if $warnstr;
2177
2178 # once we get here, we should have suceeded.
2179 $dbh->commit;
2180 }; # end eval
2181
2182 if ($@) {
2183 my $msg = $@;
2184 eval { $dbh->rollback; };
2185 $self->_log(group_id => $group, entry => "Failed adding reverse zone $zone ($msg)")
2186 if $config{log_failures};
2187 $dbh->commit; # since we enabled transactions earlier
2188 return ('FAIL',$msg);
2189 } else {
2190 my $retcode = 'OK';
2191 if ($warnstr) {
2192 $resultstr = $warnstr;
2193 $retcode = 'WARN';
2194 }
2195 return ($retcode, $rdns_id);
2196 }
2197
2198} # end addRDNS()
2199
2200
2201## DNSDB::getZoneCount
2202# Get count of zones in group or groups
2203# Takes a database handle and hash containing:
2204# - the "current" group
2205# - an array of "acceptable" groups
2206# - a flag for forward/reverse zones
2207# - Optionally accept a "starts with" and/or "contains" filter argument
2208# Returns an integer count of the resulting zone list.
2209sub getZoneCount {
2210 my $self = shift;
2211 my $dbh = $self->{dbh};
2212
2213 my %args = @_;
2214
2215 my @filterargs;
2216 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2217 push @filterargs, "^$args{startwith}" if $args{startwith};
2218 $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
2219 push @filterargs, $args{filter} if $args{filter};
2220
2221 my $sql;
2222 # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
2223 if ($args{revrec} eq 'n') {
2224 $sql = "SELECT count(*) FROM domains".
2225 " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2226 ($args{startwith} ? " AND domain ~* ?" : '').
2227 ($args{filter} ? " AND domain ~* ?" : '');
2228 } else {
2229 $sql = "SELECT count(*) FROM revzones".
2230 " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2231 ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '').
2232 ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2233 }
2234 my ($count) = $dbh->selectrow_array($sql, undef, @filterargs);
2235 return $count;
2236} # end getZoneCount()
2237
2238
2239## DNSDB::getZoneList()
2240# Get a list of zones in the specified group(s)
2241# Takes the same arguments as getZoneCount() above
2242# Returns a reference to an array of hashrefs suitable for feeding to HTML::Template
2243sub getZoneList {
2244 my $self = shift;
2245 my $dbh = $self->{dbh};
2246
2247 my %args = @_;
2248
2249 my @zonelist;
2250
2251 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
2252 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2253
2254 my @filterargs;
2255 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2256 push @filterargs, "^$args{startwith}" if $args{startwith};
2257 $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
2258 push @filterargs, $args{filter} if $args{filter};
2259
2260 my $sql;
2261 # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
2262 if ($args{revrec} eq 'n') {
2263 $args{sortby} = 'domain' if !$args{sortby} || !grep /^$args{sortby}$/, ('domain','group','status');
2264 $sql = "SELECT domain_id,domain,status,groups.group_name AS group FROM domains".
2265 " INNER JOIN groups ON domains.group_id=groups.group_id".
2266 " WHERE domains.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2267 ($args{startwith} ? " AND domain ~* ?" : '').
2268 ($args{filter} ? " AND domain ~* ?" : '');
2269 } else {
2270##fixme: arguably startwith here is irrelevant. depends on the UI though.
2271 $args{sortby} = 'revnet' if !$args{sortby} || !grep /^$args{sortby}$/, ('revnet','group','status');
2272 $sql = "SELECT rdns_id,revnet,status,groups.group_name AS group FROM revzones".
2273 " INNER JOIN groups ON revzones.group_id=groups.group_id".
2274 " WHERE revzones.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2275 ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '').
2276 ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2277 }
2278 # A common tail.
2279 $sql .= " ORDER BY ".($args{sortby} eq 'group' ? 'groups.group_name' : $args{sortby})." $args{sortorder} ".
2280 ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage}".
2281 " OFFSET ".$args{offset}*$config{perpage});
2282 my $sth = $dbh->prepare($sql);
2283 $sth->execute(@filterargs);
2284 my $rownum = 0;
2285
2286 while (my @data = $sth->fetchrow_array) {
2287 my %row;
2288 $row{domain_id} = $data[0];
2289 $row{domain} = $data[1];
2290 $row{status} = $data[2];
2291 $row{group} = $data[3];
2292 push @zonelist, \%row;
2293 }
2294
2295 return \@zonelist;
2296} # end getZoneList()
2297
2298
2299## DNSDB::getZoneLocation()
2300# Retrieve the default location for a zone.
2301# Takes a database handle, forward/reverse flag, and zone ID
2302sub getZoneLocation {
2303 my $self = shift;
2304 my $dbh = $self->{dbh};
2305 my $revrec = shift;
2306 my $zoneid = shift;
2307
2308 my ($loc) = $dbh->selectrow_array("SELECT default_location FROM ".
2309 ($revrec eq 'n' ? 'domains WHERE domain_id = ?' : 'revzones WHERE rdns_id = ?'),
2310 undef, ($zoneid));
2311 return $loc;
2312} # end getZoneLocation()
2313
2314
2315## DNSDB::addGroup()
2316# Add a group
2317# Takes a database handle, group name, parent group, hashref for permissions,
2318# and optional template-vs-cloneme flag for the default records
2319# Returns a status code and message
2320sub addGroup {
2321 $errstr = '';
2322 my $self = shift;
2323 my $dbh = $self->{dbh};
2324 my $groupname = shift;
2325 my $pargroup = shift;
2326 my $permissions = shift;
2327
2328 # 0 indicates "custom", hardcoded.
2329 # Any other value clones that group's default records, if it exists.
2330 my $inherit = shift || 0;
2331##fixme: need a flag to indicate clone records or <?> ?
2332
2333 # Allow transactions, and raise an exception on errors so we can catch it later.
2334 # Use local to make sure these get "reset" properly on exiting this block
2335 local $dbh->{AutoCommit} = 0;
2336 local $dbh->{RaiseError} = 1;
2337
2338 my ($group_id) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($groupname));
2339
2340 return ('FAIL', "Group already exists") if $group_id;
2341
2342 # Wrap all the SQL in a transaction
2343 eval {
2344 $dbh->do("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)", undef, ($pargroup, $groupname) );
2345
2346 my ($groupid) = $dbh->selectrow_array("SELECT currval('groups_group_id_seq')");
2347
2348 # We work through the whole set of permissions instead of specifying them so
2349 # that when we add a new permission, we don't have to change the code anywhere
2350 # that doesn't explicitly deal with that specific permission.
2351 my @permvals;
2352 foreach (@permtypes) {
2353 if (!defined ($permissions->{$_})) {
2354 push @permvals, 0;
2355 } else {
2356 push @permvals, $permissions->{$_};
2357 }
2358 }
2359 $dbh->do("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")",
2360 undef, ($groupid, @permvals) );
2361 my ($permid) = $dbh->selectrow_array("SELECT currval('permissions_permission_id_seq')");
2362 $dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
2363
2364 # Default records
2365 my $sthf = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
2366 "VALUES ($groupid,?,?,?,?,?,?,?)");
2367 my $sthr = $dbh->prepare("INSERT INTO default_rev_records (group_id,host,type,val,ttl) ".
2368 "VALUES ($groupid,?,?,?,?)");
2369 if ($inherit) {
2370 # Duplicate records from parent. Actually relying on inherited records feels
2371 # very fragile, and it would be problematic to roll over at a later time.
2372 my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
2373 $sth2->execute($pargroup);
2374 while (my @clonedata = $sth2->fetchrow_array) {
2375 $sthf->execute(@clonedata);
2376 }
2377 # And now the reverse records
2378 $sth2 = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
2379 $sth2->execute($pargroup);
2380 while (my @clonedata = $sth2->fetchrow_array) {
2381 $sthr->execute(@clonedata);
2382 }
2383 } else {
2384##fixme: Hardcoding is Bad, mmmmkaaaay?
2385 # reasonable basic defaults for SOA, MX, NS, and minimal hosting
2386 # could load from a config file, but somewhere along the line we need hardcoded bits.
2387 $sthf->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
2388 $sthf->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
2389 $sthf->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
2390 $sthf->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
2391 $sthf->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
2392 $sthf->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
2393 # reasonable basic defaults for generic reverse zone. Same as initial SQL tabledef.
2394 $sthr->execute('hostmaster.ADMINDOMAIN:ns1.ADMINDOMAIN', 6, '10800:3600:604800:10800', 86400);
2395 $sthr->execute('unused-%r.ADMINDOMAIN', 65283, 'ZONE', 3600);
2396 }
2397
2398 $self->_log(group_id => $pargroup, entry => "Added group $groupname");
2399
2400 # once we get here, we should have suceeded.
2401 $dbh->commit;
2402 }; # end eval
2403
2404 if ($@) {
2405 my $msg = $@;
2406 eval { $dbh->rollback; };
2407 if ($config{log_failures}) {
2408 $self->_log(group_id => $pargroup, entry => "Failed to add group $groupname: $msg");
2409 $dbh->commit;
2410 }
2411 return ('FAIL',$msg);
2412 }
2413
2414 return ('OK','OK');
2415} # end addGroup()
2416
2417
2418## DNSDB::delGroup()
2419# Delete a group.
2420# Takes a group ID
2421# Returns a status code and message
2422sub delGroup {
2423 my $self = shift;
2424 my $dbh = $self->{dbh};
2425 my $groupid = shift;
2426
2427 # Allow transactions, and raise an exception on errors so we can catch it later.
2428 # Use local to make sure these get "reset" properly on exiting this block
2429 local $dbh->{AutoCommit} = 0;
2430 local $dbh->{RaiseError} = 1;
2431
2432##fixme: locate "knowable" error conditions and deal with them before the eval
2433# ... or inside, whatever.
2434# -> domains still exist in group
2435# -> ...
2436 my $failmsg = '';
2437 my $resultmsg = '';
2438
2439 # collect some pieces for logging and error messages
2440 my $groupname = $self->groupName($groupid);
2441 my $parid = $self->parentID(id => $groupid, type => 'group');
2442
2443 # Wrap all the SQL in a transaction
2444 eval {
2445 # Check for Things in the group
2446 $failmsg = "Can't remove group $groupname";
2447 my ($grpcnt) = $dbh->selectrow_array("SELECT count(*) FROM groups WHERE parent_group_id=?", undef, ($groupid));
2448 die "$grpcnt groups still in group\n" if $grpcnt;
2449 my ($domcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($groupid));
2450 die "$domcnt domains still in group\n" if $domcnt;
2451 my ($usercnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($groupid));
2452 die "$usercnt users still in group\n" if $usercnt;
2453
2454 $failmsg = "Failed to delete default records for $groupname";
2455 $dbh->do("DELETE from default_records WHERE group_id=?", undef, ($groupid));
2456 $failmsg = "Failed to delete default reverse records for $groupname";
2457 $dbh->do("DELETE from default_rev_records WHERE group_id=?", undef, ($groupid));
2458 $failmsg = "Failed to remove group $groupname";
2459 $dbh->do("DELETE from groups WHERE group_id=?", undef, ($groupid));
2460
2461 $self->_log(group_id => $parid, entry => "Deleted group $groupname");
2462 $resultmsg = "Deleted group $groupname";
2463
2464 # once we get here, we should have suceeded.
2465 $dbh->commit;
2466 }; # end eval
2467
2468 if ($@) {
2469 my $msg = $@;
2470 eval { $dbh->rollback; };
2471 if ($config{log_failures}) {
2472 $self->_log(group_id => $parid, entry => "$failmsg: $msg");
2473 $dbh->commit; # since we enabled transactions earlier
2474 }
2475 return ('FAIL',"$failmsg: $msg");
2476 }
2477
2478 return ('OK',$resultmsg);
2479} # end delGroup()
2480
2481
2482## DNSDB::getChildren()
2483# Get a list of all groups whose parent^n is group <n>
2484# Takes a database handle, group ID, reference to an array to put the group IDs in,
2485# and an optional flag to return only immediate children or all children-of-children
2486# default to returning all children
2487# Calls itself
2488sub getChildren {
2489 $errstr = '';
2490 my $self = shift;
2491 my $dbh = $self->{dbh};
2492 my $rootgroup = shift;
2493 my $groupdest = shift;
2494 my $immed = shift || 'all';
2495
2496 # special break for default group; otherwise we get stuck.
2497 if ($rootgroup == 1) {
2498 # by definition, group 1 is the Root Of All Groups
2499 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
2500 ($immed ne 'all' ? " AND parent_group_id=1" : '')." ORDER BY group_name");
2501 $sth->execute;
2502 while (my @this = $sth->fetchrow_array) {
2503 push @$groupdest, @this;
2504 }
2505 } else {
2506 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=? ORDER BY group_name");
2507 $sth->execute($rootgroup);
2508 return if $sth->rows == 0;
2509 my @grouplist;
2510 while (my ($group) = $sth->fetchrow_array) {
2511 push @$groupdest, $group;
2512 $self->getChildren($group, $groupdest) if $immed eq 'all';
2513 }
2514 }
2515} # end getChildren()
2516
2517
2518## DNSDB::groupName()
2519# Return the group name based on a group ID
2520# Takes a database handle and the group ID
2521# Returns the group name or undef on failure
2522sub groupName {
2523 $errstr = '';
2524 my $self = shift;
2525 my $dbh = $self->{dbh};
2526 my $groupid = shift;
2527 my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
2528 $sth->execute($groupid);
2529 my ($groupname) = $sth->fetchrow_array();
2530 $errstr = $DBI::errstr if !$groupname;
2531 return $groupname if $groupname;
2532} # end groupName
2533
2534
2535## DNSDB::getGroupCount()
2536# Get count of subgroups in group or groups
2537# Takes a database handle and hash containing:
2538# - the "current" group
2539# - an array of "acceptable" groups
2540# - Optionally accept a "starts with" and/or "contains" filter argument
2541# Returns an integer count of the resulting group list.
2542sub getGroupCount {
2543 my $self = shift;
2544 my $dbh = $self->{dbh};
2545
2546 my %args = @_;
2547
2548 my @filterargs;
2549
2550 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2551 push @filterargs, "^$args{startwith}" if $args{startwith};
2552 push @filterargs, $args{filter} if $args{filter};
2553
2554 my $sql = "SELECT count(*) FROM groups ".
2555 "WHERE parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2556 ($args{startwith} ? " AND group_name ~* ?" : '').
2557 ($args{filter} ? " AND group_name ~* ?" : '');
2558 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
2559 $errstr = $dbh->errstr if !$count;
2560 return $count;
2561} # end getGroupCount
2562
2563
2564## DNSDB::getGroupList()
2565# Get a list of sub^n-groups in the specified group(s)
2566# Takes the same arguments as getGroupCount() above
2567# Returns an arrayref containing hashrefs suitable for feeding straight to HTML::Template
2568sub getGroupList {
2569 my $self = shift;
2570 my $dbh = $self->{dbh};
2571
2572 my %args = @_;
2573
2574 my @filterargs;
2575
2576 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2577 push @filterargs, "^$args{startwith}" if $args{startwith};
2578 push @filterargs, $args{filter} if $args{filter};
2579
2580 # protection against bad or missing arguments
2581 $args{sortorder} = 'ASC' if !$args{sortorder};
2582 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2583
2584 # munge sortby for columns in database
2585 $args{sortby} = 'g.group_name' if $args{sortby} eq 'group';
2586 $args{sortby} = 'g2.group_name' if $args{sortby} eq 'parent';
2587
2588 my $sql = q(SELECT g.group_id AS groupid, g.group_name AS groupname, g2.group_name AS pgroup
2589 FROM groups g
2590 INNER JOIN groups g2 ON g2.group_id=g.parent_group_id
2591 ).
2592 " WHERE g.parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2593 ($args{startwith} ? " AND g.group_name ~* ?" : '').
2594 ($args{filter} ? " AND g.group_name ~* ?" : '').
2595 " GROUP BY g.group_id, g.group_name, g2.group_name ".
2596 " ORDER BY $args{sortby} $args{sortorder} ".
2597 ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage} OFFSET ".$args{offset}*$config{perpage});
2598 my $glist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
2599 $errstr = $dbh->errstr if !$glist;
2600
2601 # LEFT JOINs make the result set balloon beyond sanity just to include counts;
2602 # this means there's lots of crunching needed to trim the result set back down.
2603 # So instead we track the order of the groups, and push the counts into the
2604 # arrayref result separately.
2605##fixme: put this whole sub in a transaction? might be
2606# needed for accurate results on very busy systems.
2607##fixme: large group lists need prepared statements?
2608#my $ucsth = $dbh->prepare("SELECT count(*) FROM users WHERE group_id=?");
2609#my $dcsth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?");
2610#my $rcsth = $dbh->prepare("SELECT count(*) FROM revzones WHERE group_id=?");
2611 foreach (@{$glist}) {
2612 my ($ucnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($$_{groupid}));
2613 $$_{nusers} = $ucnt;
2614 my ($dcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($$_{groupid}));
2615 $$_{ndomains} = $dcnt;
2616 my ($rcnt) = $dbh->selectrow_array("SELECT count(*) FROM revzones WHERE group_id=?", undef, ($$_{groupid}));
2617 $$_{nrevzones} = $rcnt;
2618 }
2619
2620 return $glist;
2621} # end getGroupList
2622
2623
2624## DNSDB::groupID()
2625# Return the group ID based on the group name
2626# Takes a database handle and the group name
2627# Returns the group ID or undef on failure
2628sub groupID {
2629 $errstr = '';
2630 my $self = shift;
2631 my $dbh = $self->{dbh};
2632 my $group = shift;
2633 my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($group) );
2634 $errstr = $DBI::errstr if !$grpid;
2635 return $grpid if $grpid;
2636} # end groupID()
2637
2638
2639## DNSDB::addUser()
2640# Add a user.
2641# Takes a DB handle, username, group ID, password, state (active/inactive).
2642# Optionally accepts:
2643# user type (user/admin) - defaults to user
2644# permissions string - defaults to inherit from group
2645# three valid forms:
2646# i - Inherit permissions
2647# c:<user_id> - Clone permissions from <user_id>
2648# C:<permission list> - Set these specific permissions
2649# first name - defaults to username
2650# last name - defaults to blank
2651# phone - defaults to blank (could put other data within column def)
2652# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
2653sub addUser {
2654 $errstr = '';
2655 my $self = shift;
2656 my $dbh = $self->{dbh};
2657 my $username = shift;
2658 my $group = shift;
2659 my $pass = shift;
2660 my $state = shift;
2661
2662 return ('FAIL', "Missing one or more required entries") if !defined($state);
2663 return ('FAIL', "Username must not be blank") if !$username;
2664
2665 # Munge in some alternate state values
2666 $state = 1 if $state =~ /^active$/;
2667 $state = 1 if $state =~ /^on$/;
2668 $state = 0 if $state =~ /^inactive$/;
2669 $state = 0 if $state =~ /^off$/;
2670
2671 my $type = shift || 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
2672
2673 my $permstring = shift || 'i'; # default is to inhert permissions from group
2674
2675 my $fname = shift || $username;
2676 my $lname = shift || '';
2677 my $phone = shift || ''; # not going format-check
2678
2679 my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
2680 my $user_id;
2681
2682# quick check to start to see if we've already got one
2683 $sth->execute($username);
2684 ($user_id) = $sth->fetchrow_array;
2685
2686 return ('FAIL', "User already exists") if $user_id;
2687
2688 # Allow transactions, and raise an exception on errors so we can catch it later.
2689 # Use local to make sure these get "reset" properly on exiting this block
2690 local $dbh->{AutoCommit} = 0;
2691 local $dbh->{RaiseError} = 1;
2692
2693 # Wrap all the SQL in a transaction
2694 eval {
2695 # insert the user... note we set inherited perms by default since
2696 # it's simple and cleans up some other bits of state
2697 my $sth = $dbh->prepare("INSERT INTO users ".
2698 "(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
2699 "VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
2700 $sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
2701
2702 # get the ID...
2703 ($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
2704
2705# Permissions! Gotta set'em all!
2706 die "Invalid permission string $permstring\n"
2707 if $permstring !~ /^(?:
2708 i # inherit
2709 |c:\d+ # clone
2710 # custom. no, the leading , is not a typo
2711 |C:(?:,(?:group|user|domain|record|location|self)_(?:edit|create|delete|locchg|view))*
2712 )$/x;
2713# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
2714 if ($permstring ne 'i') {
2715 # for cloned or custom permissions, we have to create a new permissions entry.
2716 my $clonesrc = $group;
2717 if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
2718 $dbh->do("INSERT INTO permissions ($permlist,user_id) ".
2719 "SELECT $permlist,? FROM permissions WHERE permission_id=".
2720 "(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
2721 undef, ($user_id,$clonesrc) );
2722 $dbh->do("UPDATE users SET permission_id=".
2723 "(SELECT permission_id FROM permissions WHERE user_id=?) ".
2724 "WHERE user_id=?", undef, ($user_id, $user_id) );
2725 }
2726 if ($permstring =~ /^C:/) {
2727 # finally for custom permissions, we set the passed-in permissions (and unset
2728 # any that might have been brought in by the clone operation above)
2729 my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
2730 undef, ($user_id) );
2731 foreach (@permtypes) {
2732 if ($permstring =~ /,$_/) {
2733 $dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
2734 } else {
2735 $dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
2736 }
2737 }
2738 }
2739
2740 $dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
2741
2742##fixme: add another table to hold name/email for log table?
2743
2744 $self->_log(group_id => $group, entry => "Added user $username ($fname $lname)");
2745 # once we get here, we should have suceeded.
2746 $dbh->commit;
2747 }; # end eval
2748
2749 if ($@) {
2750 my $msg = $@;
2751 eval { $dbh->rollback; };
2752 if ($config{log_failures}) {
2753 $self->_log(group_id => $group, entry => "Error adding user $username: $msg");
2754 $dbh->commit; # since we enabled transactions earlier
2755 }
2756 return ('FAIL',"Error adding user $username: $msg");
2757 }
2758
2759 return ('OK',"User $username ($fname $lname) added");
2760} # end addUser
2761
2762
2763## DNSDB::getUserCount()
2764# Get count of users in group
2765# Takes a database handle and hash containing at least the current group, and optionally:
2766# - a reference list of secondary groups
2767# - a filter string
2768# - a "Starts with" string
2769sub getUserCount {
2770 my $self = shift;
2771 my $dbh = $self->{dbh};
2772
2773 my %args = @_;
2774
2775 my @filterargs;
2776
2777 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2778 push @filterargs, "^$args{startwith}" if $args{startwith};
2779 push @filterargs, $args{filter} if $args{filter};
2780
2781
2782 my $sql = "SELECT count(*) FROM users ".
2783 "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2784 ($args{startwith} ? " AND username ~* ?" : '').
2785 ($args{filter} ? " AND username ~* ?" : '');
2786 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
2787 $errstr = $dbh->errstr if !$count;
2788 return $count;
2789} # end getUserCount()
2790
2791
2792## DNSDB::getUserList()
2793# Get list of users
2794# Takes the same arguments as getUserCount() above, plus optional:
2795# - sort field
2796# - sort order
2797# - offset/return-all-everything flag (defaults to $perpage records)
2798sub getUserList {
2799 my $self = shift;
2800 my $dbh = $self->{dbh};
2801
2802 my %args = @_;
2803
2804 my @filterargs;
2805
2806 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2807 push @filterargs, "^$args{startwith}" if $args{startwith};
2808 push @filterargs, $args{filter} if $args{filter};
2809
2810 # better to request sorts on "simple" names, but it means we need to map it to real columns
2811 my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status',
2812 fname => 'fname');
2813 $args{sortby} = $sortmap{$args{sortby}};
2814
2815 # protection against bad or missing arguments
2816 $args{sortorder} = 'ASC' if !$args{sortorder};
2817 $args{sortby} = 'u.username' if !$args{sortby};
2818 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2819
2820 my $sql = "SELECT u.user_id, u.username, u.firstname || ' ' || u.lastname AS fname, u.type, g.group_name, u.status ".
2821 "FROM users u ".
2822 "INNER JOIN groups g ON u.group_id=g.group_id ".
2823 "WHERE u.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2824 ($args{startwith} ? " AND u.username ~* ?" : '').
2825 ($args{filter} ? " AND u.username ~* ?" : '').
2826 " AND NOT u.type = 'R' ".
2827 " ORDER BY $args{sortby} $args{sortorder} ".
2828 ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage} OFFSET ".$args{offset}*$config{perpage});
2829 my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
2830 $errstr = $dbh->errstr if !$ulist;
2831 return $ulist;
2832} # end getUserList()
2833
2834
2835## DNSDB::getUserDropdown()
2836# Get a list of usernames for use in a dropdown menu.
2837# Takes a database handle, current group, and optional "tag this as selected" flag.
2838# Returns a reference to a list of hashrefs suitable to feeding to HTML::Template
2839sub getUserDropdown {
2840 my $self = shift;
2841 my $dbh = $self->{dbh};
2842 my $grp = shift;
2843 my $sel = shift || 0;
2844
2845 my $sth = $dbh->prepare("SELECT username,user_id FROM users WHERE group_id=?");
2846 $sth->execute($grp);
2847
2848 my @userlist;
2849 while (my ($username,$uid) = $sth->fetchrow_array) {
2850 my %row = (
2851 username => $username,
2852 uid => $uid,
2853 selected => ($sel == $uid ? 1 : 0)
2854 );
2855 push @userlist, \%row;
2856 }
2857 return \@userlist;
2858} # end getUserDropdown()
2859
2860
2861## DNSDB:: updateUser()
2862# Update general data about user
2863sub updateUser {
2864 my $self = shift;
2865 my $dbh = $self->{dbh};
2866
2867##fixme: tweak calling convention so that we can update any given bit of data
2868 my $uid = shift;
2869 my $username = shift;
2870 my $group = shift;
2871 my $pass = shift;
2872 my $state = shift;
2873 my $type = shift || 'u';
2874 my $fname = shift || $username;
2875 my $lname = shift || '';
2876 my $phone = shift || ''; # not going format-check
2877
2878 my $resultmsg = '';
2879
2880 # Munge in some alternate state values
2881 $state = 1 if $state =~ /^active$/;
2882 $state = 1 if $state =~ /^on$/;
2883 $state = 0 if $state =~ /^inactive$/;
2884 $state = 0 if $state =~ /^off$/;
2885
2886 # Allow transactions, and raise an exception on errors so we can catch it later.
2887 # Use local to make sure these get "reset" properly on exiting this block
2888 local $dbh->{AutoCommit} = 0;
2889 local $dbh->{RaiseError} = 1;
2890
2891 my $sth;
2892
2893 # Password can be left blank; if so we assume there's one on file.
2894 # Actual blank passwords are bad, mm'kay?
2895 if (!$pass) {
2896 ($pass) = $dbh->selectrow_array("SELECT password FROM users WHERE user_id=?", undef, ($uid));
2897 } else {
2898 $pass = unix_md5_crypt($pass);
2899 }
2900
2901 eval {
2902 $dbh->do("UPDATE users SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?".
2903 " WHERE user_id=?", undef, ($username, $pass, $fname, $lname, $phone, $type, $state, $uid));
2904 $resultmsg = "Updated user info for $username ($fname $lname)";
2905 $self->_log(group_id => $group, entry => $resultmsg);
2906 $dbh->commit;
2907 };
2908 if ($@) {
2909 my $msg = $@;
2910 eval { $dbh->rollback; };
2911 if ($config{log_failures}) {
2912 $self->_log(group_id => $group, entry => "Error updating user $username: $msg");
2913 $dbh->commit; # since we enabled transactions earlier
2914 }
2915 return ('FAIL',"Error updating user $username: $msg");
2916 }
2917
2918 return ('OK',$resultmsg);
2919} # end updateUser()
2920
2921
2922## DNSDB::delUser()
2923# Delete a user.
2924# Takes a database handle and user ID
2925# Returns a success/failure code and matching message
2926sub delUser {
2927 my $self = shift;
2928 my $dbh = $self->{dbh};
2929 my $userid = shift;
2930
2931 return ('FAIL',"Bad userid") if !defined($userid);
2932
2933 my $userdata = $self->getUserData($userid);
2934
2935 # Allow transactions, and raise an exception on errors so we can catch it later.
2936 # Use local to make sure these get "reset" properly on exiting this block
2937 local $dbh->{AutoCommit} = 0;
2938 local $dbh->{RaiseError} = 1;
2939
2940 eval {
2941 $dbh->do("DELETE FROM users WHERE user_id=?", undef, ($userid));
2942 $self->_log(group_id => $userdata->{group_id},
2943 entry => "Deleted user ID $userid/".$userdata->{username}.
2944 " (".$userdata->{firstname}." ".$userdata->{lastname}.")");
2945 $dbh->commit;
2946 };
2947 if ($@) {
2948 my $msg = $@;
2949 eval { $dbh->rollback; };
2950 if ($config{log_failures}) {
2951 $self->_log(group_id => $userdata->{group_id}, entry => "Error deleting user ID ".
2952 "$userid/".$userdata->{username}.": $msg");
2953 $dbh->commit;
2954 }
2955 return ('FAIL',"Error deleting user $userid/".$userdata->{username}.": $msg");
2956 }
2957
2958 return ('OK',"Deleted user ".$userdata->{username}." (".$userdata->{firstname}." ".$userdata->{lastname}.")");
2959} # end delUser
2960
2961
2962## DNSDB::userFullName()
2963# Return a pretty string!
2964# Takes a user_id and optional printf-ish string to indicate which pieces where:
2965# %u for the username
2966# %f for the first name
2967# %l for the last name
2968# All other text in the passed string will be left as-is.
2969##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
2970sub userFullName {
2971 $errstr = '';
2972 my $self = shift;
2973 my $dbh = $self->{dbh};
2974 my $userid = shift;
2975 my $fullformat = shift || '%f %l (%u)';
2976 my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
2977 $sth->execute($userid);
2978 my ($uname,$fname,$lname) = $sth->fetchrow_array();
2979 $errstr = $DBI::errstr if !$uname;
2980
2981 $fullformat =~ s/\%u/$uname/g;
2982 $fullformat =~ s/\%f/$fname/g;
2983 $fullformat =~ s/\%l/$lname/g;
2984
2985 return $fullformat;
2986} # end userFullName
2987
2988
2989## DNSDB::userStatus()
2990# Sets and/or returns a user's status
2991# Takes a database handle, user ID and optionally a status argument
2992# Returns undef on errors.
2993sub userStatus {
2994 my $self = shift;
2995 my $dbh = $self->{dbh};
2996 my $id = shift;
2997 my $newstatus = shift || 'mu';
2998
2999 return undef if $id !~ /^\d+$/;
3000
3001 my $userdata = $self->getUserData($id);
3002
3003 # Allow transactions, and raise an exception on errors so we can catch it later.
3004 # Use local to make sure these get "reset" properly on exiting this block
3005 local $dbh->{AutoCommit} = 0;
3006 local $dbh->{RaiseError} = 1;
3007
3008 if ($newstatus ne 'mu') {
3009 # ooo, fun! let's see what we were passed for status
3010 eval {
3011 $newstatus = 0 if $newstatus eq 'useroff';
3012 $newstatus = 1 if $newstatus eq 'useron';
3013 $dbh->do("UPDATE users SET status=? WHERE user_id=?", undef, ($newstatus, $id));
3014
3015 $resultstr = ($newstatus ? 'Enabled' : 'Disabled')." user ".$userdata->{username}.
3016 " (".$userdata->{firstname}." ".$userdata->{lastname}.")";
3017
3018 my %loghash;
3019 $loghash{group_id} = $self->parentID(id => $id, type => 'user');
3020 $loghash{entry} = $resultstr;
3021 $self->_log(%loghash);
3022
3023 $dbh->commit;
3024 };
3025 if ($@) {
3026 my $msg = $@;
3027 eval { $dbh->rollback; };
3028 $resultstr = '';
3029 $errstr = $msg;
3030##fixme: failure logging?
3031 return;
3032 }
3033 }
3034
3035 my ($status) = $dbh->selectrow_array("SELECT status FROM users WHERE user_id=?", undef, ($id));
3036 return $status;
3037} # end userStatus()
3038
3039
3040## DNSDB::getUserData()
3041# Get misc user data for display
3042sub getUserData {
3043 my $self = shift;
3044 my $dbh = $self->{dbh};
3045 my $uid = shift;
3046
3047 my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
3048 "FROM users WHERE user_id=?");
3049 $sth->execute($uid);
3050 return $sth->fetchrow_hashref();
3051} # end getUserData()
3052
3053
3054## DNSDB::addLoc()
3055# Add a new location.
3056# Takes a database handle, group ID, short and long description, and a comma-separated
3057# list of IP addresses.
3058# Returns ('OK',<location>) on success, ('FAIL',<failmsg>) on failure
3059sub addLoc {
3060 my $self = shift;
3061 my $dbh = $self->{dbh};
3062 my $grp = shift;
3063 my $shdesc = shift;
3064 my $comments = shift;
3065 my $iplist = shift;
3066
3067 # $shdesc gets set to the generated location ID if possible, but these can be de-undefined here.
3068 $comments = '' if !$comments;
3069 $iplist = '' if !$iplist;
3070
3071 my $loc;
3072
3073 # Generate a location ID. This is, by spec, a two-character widget. We'll use [a-z][a-z]
3074 # for now; 676 locations should satisfy all but the largest of the huge networks.
3075 # Not sure whether these are case-sensitive, or what other rules might apply - in any case
3076 # the absolute maximum is 16K (256*256) since it's parsed by tinydns as a two-character field.
3077
3078# add just after "my $origloc = $loc;":
3079# # These expand the possible space from 26^2 to 52^2 [* note in testing only 2052 were achieved],
3080# # and wrap it around.
3081# # Yes, they skip a couple of possibles. No, I don't care.
3082# $loc = 'aA' if $loc eq 'zz';
3083# $loc = 'Aa' if $loc eq 'zZ';
3084# $loc = 'ZA' if $loc eq 'Zz';
3085# $loc = 'aa' if $loc eq 'ZZ';
3086
3087 # Allow transactions, and raise an exception on errors so we can catch it later.
3088 # Use local to make sure these get "reset" properly on exiting this block
3089 local $dbh->{AutoCommit} = 0;
3090 local $dbh->{RaiseError} = 1;
3091
3092##fixme: There is probably a far better way to do this. Sequential increments
3093# are marginally less stupid that pure random generation though, and the existence
3094# check makes sure we don't stomp on an imported one.
3095
3096 eval {
3097 # Get the "last" location. Note this is the only use for loc_id, because selecting on location Does Funky Things
3098 ($loc) = $dbh->selectrow_array("SELECT location FROM locations ORDER BY loc_id DESC LIMIT 1");
3099 ($loc) = ($loc =~ /^(..)/) if $loc;
3100 my $origloc = $loc;
3101 $loc = 'aa' if !$loc;
3102 # Make a change...
3103 $loc++;
3104 # ... and keep changing if it exists
3105 while ($dbh->selectrow_array("SELECT count(*) FROM locations WHERE location LIKE ?", undef, ($loc.'%'))) {
3106 $loc++;
3107 ($loc) = ($loc =~ /^(..)/);
3108 die "too many locations in use, can't add another one\n" if $loc eq $origloc;
3109##fixme: really need to handle this case faster somehow
3110#if $loc eq $origloc die "<thwap> bad admin: all locations used, your network is too fragmented";
3111 }
3112 # And now we should have a unique location. tinydns fundamentally limits the
3113 # number of these but there's no doc on what characters are valid.
3114 $shdesc = $loc if !$shdesc;
3115 $dbh->do("INSERT INTO locations (location, group_id, iplist, description, comments) VALUES (?,?,?,?,?)",
3116 undef, ($loc, $grp, $iplist, $shdesc, $comments) );
3117 $self->_log(entry => "Added location ($shdesc, '$iplist')");
3118 $dbh->commit;
3119 };
3120 if ($@) {
3121 my $msg = $@;
3122 eval { $dbh->rollback; };
3123 if ($config{log_failures}) {
3124 $shdesc = $loc if !$shdesc;
3125 $self->_log(entry => "Failed adding location ($shdesc, '$iplist'): $msg");
3126 $dbh->commit;
3127 }
3128 return ('FAIL',$msg);
3129 }
3130
3131 return ('OK',$loc);
3132} # end addLoc()
3133
3134
3135## DNSDB::updateLoc()
3136# Update details of a location.
3137# Takes a database handle, location ID, group ID, short description,
3138# long comments/notes, and comma/space-separated IP list
3139# Returns a result code and message
3140sub updateLoc {
3141 my $self = shift;
3142 my $dbh = $self->{dbh};
3143 my $loc = shift;
3144 my $grp = shift;
3145 my $shdesc = shift;
3146 my $comments = shift;
3147 my $iplist = shift;
3148
3149 $shdesc = '' if !$shdesc;
3150 $comments = '' if !$comments;
3151 $iplist = '' if !$iplist;
3152
3153 # Allow transactions, and raise an exception on errors so we can catch it later.
3154 # Use local to make sure these get "reset" properly on exiting this block
3155 local $dbh->{AutoCommit} = 0;
3156 local $dbh->{RaiseError} = 1;
3157
3158 my $oldloc = $self->getLoc($loc);
3159 my $okmsg = "Updated location (".$oldloc->{description}.", '".$oldloc->{iplist}."') to ($shdesc, '$iplist')";
3160
3161 eval {
3162 $dbh->do("UPDATE locations SET group_id=?,iplist=?,description=?,comments=? WHERE location=?",
3163 undef, ($grp, $iplist, $shdesc, $comments, $loc) );
3164 $self->_log(entry => $okmsg);
3165 $dbh->commit;
3166 };
3167 if ($@) {
3168 my $msg = $@;
3169 eval { $dbh->rollback; };
3170 if ($config{log_failures}) {
3171 $shdesc = $loc if !$shdesc;
3172 $self->_log(entry => "Failed updating location ($shdesc, '$iplist'): $msg");
3173 $dbh->commit;
3174 }
3175 return ('FAIL',$msg);
3176 }
3177
3178 return ('OK',$okmsg);
3179} # end updateLoc()
3180
3181
3182## DNSDB::delLoc()
3183sub delLoc {
3184 my $self = shift;
3185 my $dbh = $self->{dbh};
3186 my $loc = shift;
3187
3188 # Allow transactions, and raise an exception on errors so we can catch it later.
3189 # Use local to make sure these get "reset" properly on exiting this block
3190 local $dbh->{AutoCommit} = 0;
3191 local $dbh->{RaiseError} = 1;
3192
3193 my $oldloc = $self->getLoc($loc);
3194 my $olddesc = ($oldloc->{description} ? $oldloc->{description} : $loc);
3195 my $okmsg = "Deleted location ($olddesc, '".$oldloc->{iplist}."')";
3196
3197 eval {
3198 # Check for records with this location first. Deleting a location without deleting records
3199 # tagged for that location will render them unpublished without other warning.
3200 my ($r) = $dbh->selectrow_array("SELECT record_id FROM records WHERE location=? LIMIT 1", undef, ($loc) );
3201 die "Records still exist in location $olddesc\n" if $r;
3202 $dbh->do("DELETE FROM locations WHERE location=?", undef, ($loc) );
3203 $self->_log(entry => $okmsg);
3204 $dbh->commit;
3205 };
3206 if ($@) {
3207 my $msg = $@;
3208 eval { $dbh->rollback; };
3209 if ($config{log_failures}) {
3210 $self->_log(entry => "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg");
3211 $dbh->commit;
3212 }
3213 return ('FAIL', "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg");
3214 }
3215
3216 return ('OK',$okmsg);
3217} # end delLoc()
3218
3219
3220## DNSDB::getLoc()
3221# Get details about a location/view
3222# Takes a database handle and location ID.
3223# Returns a reference to a hash containing the group ID, IP list, description, and comments/notes
3224sub getLoc {
3225 my $self = shift;
3226 my $dbh = $self->{dbh};
3227 my $loc = shift;
3228
3229 my $sth = $dbh->prepare("SELECT group_id,iplist,description,comments FROM locations WHERE location=?");
3230 $sth->execute($loc);
3231 return $sth->fetchrow_hashref();
3232} # end getLoc()
3233
3234
3235## DNSDB::getLocCount()
3236# Get count of locations/views
3237# Takes a database handle and hash containing at least the current group, and optionally:
3238# - a reference list of secondary groups
3239# - a filter string
3240# - a "Starts with" string
3241sub getLocCount {
3242 my $self = shift;
3243 my $dbh = $self->{dbh};
3244
3245 my %args = @_;
3246
3247 my @filterargs;
3248
3249 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
3250 push @filterargs, "^$args{startwith}" if $args{startwith};
3251 push @filterargs, $args{filter} if $args{filter};
3252
3253
3254 my $sql = "SELECT count(*) FROM locations ".
3255 "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
3256 ($args{startwith} ? " AND description ~* ?" : '').
3257 ($args{filter} ? " AND description ~* ?" : '');
3258 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
3259 $errstr = $dbh->errstr if !$count;
3260 return $count;
3261} # end getLocCount()
3262
3263
3264## DNSDB::getLocList()
3265sub getLocList {
3266 my $self = shift;
3267 my $dbh = $self->{dbh};
3268
3269 my %args = @_;
3270
3271 my @filterargs;
3272
3273 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
3274 push @filterargs, "^$args{startwith}" if $args{startwith};
3275 push @filterargs, $args{filter} if $args{filter};
3276
3277 # better to request sorts on "simple" names, but it means we need to map it to real columns
3278# my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status',
3279# fname => 'fname');
3280# $args{sortby} = $sortmap{$args{sortby}};
3281
3282 # protection against bad or missing arguments
3283 $args{sortorder} = 'ASC' if !$args{sortorder};
3284 $args{sortby} = 'l.description' if !$args{sortby};
3285 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
3286
3287 my $sql = "SELECT l.location, l.description, l.iplist, g.group_name ".
3288 "FROM locations l ".
3289 "INNER JOIN groups g ON l.group_id=g.group_id ".
3290 "WHERE l.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
3291 ($args{startwith} ? " AND l.description ~* ?" : '').
3292 ($args{filter} ? " AND l.description ~* ?" : '').
3293 " ORDER BY $args{sortby} $args{sortorder} ".
3294 ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage} OFFSET ".$args{offset}*$config{perpage});
3295 my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
3296 $errstr = $dbh->errstr if !$ulist;
3297 return $ulist;
3298} # end getLocList()
3299
3300
3301## DNSDB::getLocDropdown()
3302# Get a list of location names for use in a dropdown menu.
3303# Takes a database handle, current group, and optional "tag this as selected" flag.
3304# Returns a reference to a list of hashrefs suitable to feeding to HTML::Template
3305sub getLocDropdown {
3306 my $self = shift;
3307 my $dbh = $self->{dbh};
3308 my $grp = shift;
3309 my $sel = shift || '';
3310
3311 my $sth = $dbh->prepare(qq(
3312 SELECT description,location FROM locations
3313 WHERE group_id=?
3314 ORDER BY description
3315 ) );
3316 $sth->execute($grp);
3317
3318 my @loclist;
3319 push @loclist, { locname => "(Default/All)", loc => '', selected => ($sel ? 0 : ($sel eq '' ? 1 : 0)) };
3320 while (my ($locname, $loc) = $sth->fetchrow_array) {
3321 my %row = (
3322 locname => $locname,
3323 loc => $loc,
3324 selected => ($sel eq $loc ? 1 : 0)
3325 );
3326 push @loclist, \%row;
3327 }
3328 return \@loclist;
3329} # end getLocDropdown()
3330
3331
3332## DNSDB::getSOA()
3333# Return all suitable fields from an SOA record in separate elements of a hash
3334# Takes a database handle, default/live flag, domain/reverse flag, and parent ID
3335sub getSOA {
3336 $errstr = '';
3337 my $self = shift;
3338 my $dbh = $self->{dbh};
3339 my $def = shift;
3340 my $rev = shift;
3341 my $id = shift;
3342
3343 # (ab)use distance and weight columns to store SOA data? can't for default_rev_records...
3344 # - should really attach serial to the zone parent somewhere
3345
3346 my $sql = "SELECT record_id,host,val,ttl from "._rectable($def,$rev).
3347 " WHERE "._recparent($def,$rev)." = ? AND type=$reverse_typemap{SOA}";
3348 my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
3349 return if !$ret;
3350##fixme: stick a flag somewhere if the record doesn't exist. by the API, this is an impossible case, but...
3351
3352 ($ret->{contact},$ret->{prins}) = split /:/, $ret->{host};
3353 delete $ret->{host};
3354 ($ret->{refresh},$ret->{retry},$ret->{expire},$ret->{minttl}) = split /:/, $ret->{val};
3355 delete $ret->{val};
3356
3357 return $ret;
3358} # end getSOA()
3359
3360
3361## DNSDB::updateSOA()
3362# Update the specified SOA record
3363# Takes a database handle, default/live flag, forward/reverse flag, and SOA data hash
3364# Returns a two-element list with a result code and message
3365sub updateSOA {
3366 my $self = shift;
3367 my $dbh = $self->{dbh};
3368 my $defrec = shift;
3369 my $revrec = shift;
3370
3371 my %soa = @_;
3372
3373 my $oldsoa = $self->getSOA($defrec, $revrec, $soa{id});
3374
3375 my $msg;
3376 my %logdata;
3377 if ($defrec eq 'n') {
3378 $logdata{domain_id} = $soa{id} if $revrec eq 'n';
3379 $logdata{rdns_id} = $soa{id} if $revrec eq 'y';
3380 $logdata{group_id} = $self->parentID(id => $soa{id}, revrec => $revrec,
3381 type => ($revrec eq 'n' ? 'domain' : 'revzone') );
3382 } else {
3383 $logdata{group_id} = $soa{id};
3384 }
3385 my $parname = ($defrec eq 'y' ? $self->groupName($soa{id}) :
3386 ($revrec eq 'n' ? $self->domainName($soa{id}) : $self->revName($soa{id})) );
3387
3388 # Allow transactions, and raise an exception on errors so we can catch it later.
3389 # Use local to make sure these get "reset" properly on exiting this block
3390 local $dbh->{AutoCommit} = 0;
3391 local $dbh->{RaiseError} = 1;
3392
3393 eval {
3394 my $sql = "UPDATE "._rectable($defrec, $revrec)." SET host=?, val=?, ttl=? WHERE record_id=? AND type=6";
3395 $dbh->do($sql, undef, ("$soa{contact}:$soa{prins}", "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}",
3396 $soa{ttl}, $oldsoa->{record_id}) );
3397 $msg = "Updated ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse ' : 'default ') : '').
3398 "SOA for $parname: ".
3399 "(ns $oldsoa->{prins}, contact $oldsoa->{contact}, refresh $oldsoa->{refresh},".
3400 " retry $oldsoa->{retry}, expire $oldsoa->{expire}, minTTL $oldsoa->{minttl}, TTL $oldsoa->{ttl}) to ".
3401 "(ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},".
3402 " retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})";
3403
3404 $logdata{entry} = $msg;
3405 $self->_log(%logdata);
3406
3407 $dbh->commit;
3408 };
3409 if ($@) {
3410 $msg = $@;
3411 eval { $dbh->rollback; };
3412 $logdata{entry} = "Error updating ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse zone ' : 'default ') : '').
3413 "SOA record for $parname: $msg";
3414 if ($config{log_failures}) {
3415 $self->_log(%logdata);
3416 $dbh->commit;
3417 }
3418 return ('FAIL', $logdata{entry});
3419 } else {
3420 return ('OK', $msg);
3421 }
3422} # end updateSOA()
3423
3424
3425## DNSDB::getRecLine()
3426# Return all data fields for a zone record in separate elements of a hash
3427# Takes a database handle, default/live flag, forward/reverse flag, and record ID
3428sub getRecLine {
3429 $errstr = '';
3430 my $self = shift;
3431 my $dbh = $self->{dbh};
3432 my $defrec = shift;
3433 my $revrec = shift;
3434 my $id = shift;
3435
3436 my $sql = "SELECT record_id,host,type,val,ttl".
3437 ($defrec eq 'n' ? ',location' : '').
3438 ($revrec eq 'n' ? ',distance,weight,port' : '').
3439 (($defrec eq 'y') ? ',group_id FROM ' : ',domain_id,rdns_id FROM ').
3440 _rectable($defrec,$revrec)." WHERE record_id=?";
3441 my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
3442
3443 if ($dbh->err) {
3444 $errstr = $DBI::errstr;
3445 return undef;
3446 }
3447
3448 if (!$ret) {
3449 $errstr = "No such record";
3450 return undef;
3451 }
3452
3453 # explicitly set a parent id
3454 if ($defrec eq 'y') {
3455 $ret->{parid} = $ret->{group_id};
3456 } else {
3457 $ret->{parid} = (($revrec eq 'n') ? $ret->{domain_id} : $ret->{rdns_id});
3458 # and a secondary if we have a custom type that lives in both a forward and reverse zone
3459 $ret->{secid} = (($revrec eq 'y') ? $ret->{domain_id} : $ret->{rdns_id}) if $ret->{type} > 65279;
3460 }
3461 $ret->{address} = $ret->{val}; # because.
3462
3463 return $ret;
3464}
3465
3466
3467##fixme: should use above (getRecLine()) to get lines for below?
3468## DNSDB::getRecList()
3469# Return records for a group or zone
3470# Takes a default/live flag, group or zone ID, start,
3471# number of records, sort field, and sort order
3472# Returns a reference to an array of hashes
3473sub getRecList {
3474 $errstr = '';
3475 my $self = shift;
3476 my $dbh = $self->{dbh};
3477
3478 my %args = @_;
3479
3480 my @filterargs;
3481
3482 push @filterargs, $args{filter} if $args{filter};
3483
3484 # protection against bad or missing arguments
3485 $args{sortorder} = 'ASC' if !$args{sortorder};
3486 $args{sortby} = 'host' if !$args{sortby} && $args{revrec} eq 'n'; # default sort by host on domain record list
3487 $args{sortby} = 'val' if !$args{sortby} && $args{revrec} eq 'y'; # default sort by IP on revzone record list
3488 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
3489
3490 # sort reverse zones on IP, correctly
3491 # do other fiddling with $args{sortby} while we're at it.
3492 # whee! multisort means just passing comma-separated fields in sortby!
3493 my $newsort = '';
3494 foreach my $sf (split /,/, $args{sortby}) {
3495 $sf = "r.$sf";
3496 $sf =~ s/r\.val/CAST (r.val AS inet)/
3497 if $args{revrec} eq 'y' && $args{defrec} eq 'n';
3498 $sf =~ s/r\.type/t.alphaorder/;
3499 $newsort .= ",$sf";
3500 }
3501 $newsort =~ s/^,//;
3502
3503 my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.ttl";
3504 $sql .= ",l.description AS locname" if $args{defrec} eq 'n';
3505 $sql .= ",r.distance,r.weight,r.port" if $args{revrec} eq 'n';
3506 $sql .= " FROM "._rectable($args{defrec},$args{revrec})." r ";
3507 $sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
3508 $sql .= "LEFT JOIN locations l ON r.location=l.location " if $args{defrec} eq 'n';
3509 $sql .= "WHERE "._recparent($args{defrec},$args{revrec})." = ?";
3510 $sql .= " AND NOT r.type=$reverse_typemap{SOA}";
3511 $sql .= " AND (r.host ~* ? OR r.val ~* ?)" if $args{filter};
3512 $sql .= " ORDER BY $newsort $args{sortorder}";
3513 # ensure consistent ordering by sorting on record_id too
3514 $sql .= ", record_id $args{sortorder}";
3515 $sql .= ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage} OFFSET ".$args{offset}*$config{perpage});
3516
3517 my @bindvars = ($args{id});
3518 push @bindvars, ($args{filter},$args{filter}) if $args{filter};
3519
3520 my $ret = $dbh->selectall_arrayref($sql, { Slice => {} }, (@bindvars) );
3521 $errstr = "Error retrieving records: ".$dbh->errstr if !$ret;
3522 return $ret;
3523} # end getRecList()
3524
3525
3526## DNSDB::getRecCount()
3527# Return count of non-SOA records in zone (or default records in a group)
3528# Takes a database handle, default/live flag, reverse/forward flag, group/domain ID,
3529# and optional filtering modifier
3530# Returns the count
3531sub getRecCount {
3532 my $self = shift;
3533 my $dbh = $self->{dbh};
3534 my $defrec = shift;
3535 my $revrec = shift;
3536 my $id = shift;
3537 my $filter = shift || '';
3538
3539 # keep the nasties down, since we can't ?-sub this bit. :/
3540 # note this is chars allowed in DNS hostnames
3541 $filter =~ s/[^a-zA-Z0-9_.:-]//g;
3542
3543 my @bindvars = ($id);
3544 push @bindvars, $filter if $filter;
3545 my $sql = "SELECT count(*) FROM ".
3546 _rectable($defrec,$revrec).
3547 " WHERE "._recparent($defrec,$revrec)."=? ".
3548 "AND NOT type=$reverse_typemap{SOA}".
3549 ($filter ? " AND host ~* ?" : '');
3550 my ($count) = $dbh->selectrow_array($sql, undef, (@bindvars) );
3551
3552 return $count;
3553
3554} # end getRecCount()
3555
3556
3557## DNSDB::addRec()
3558# Add a new record to a domain or a group's default records
3559# Takes a database handle, default/live flag, group/domain ID,
3560# host, type, value, and TTL
3561# Some types require additional detail: "distance" for MX and SRV,
3562# and weight/port for SRV
3563# Returns a status code and detail message in case of error
3564##fixme: pass a hash with the record data, not a series of separate values
3565sub addRec {
3566 $errstr = '';
3567 my $self = shift;
3568 my $dbh = $self->{dbh};
3569 my $defrec = shift;
3570 my $revrec = shift;
3571 my $id = shift; # parent (group_id for defrecs, rdns_id for reverse records,
3572 # domain_id for domain records)
3573
3574 my $host = shift;
3575 my $rectype = shift; # reference so we can coerce it if "+"-types can't find both zones
3576 my $val = shift;
3577 my $ttl = shift;
3578 my $location = shift;
3579 $location = '' if !$location;
3580
3581 # Spaces are evil.
3582 $$host =~ s/^\s+//;
3583 $$host =~ s/\s+$//;
3584 if ($typemap{$$rectype} ne 'TXT') {
3585 # Leading or trailng spaces could be legit in TXT records.
3586 $$val =~ s/^\s+//;
3587 $$val =~ s/\s+$//;
3588 }
3589
3590 # prep for validation
3591 my $addr = NetAddr::IP->new($$val);
3592 $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
3593
3594 my $domid = 0;
3595 my $revid = 0;
3596
3597 my $retcode = 'OK'; # assume everything will go OK
3598 my $retmsg = '';
3599
3600 # do simple validation first
3601 return ('FAIL', "TTL must be numeric") unless $ttl =~ /^\d+$/;
3602
3603 # Quick check on hostname parts. Note the regex is more forgiving than the error message;
3604 # domain names technically are case-insensitive, and we use printf-like % codes for a couple
3605 # of types. Other things may also be added to validate default records of several flavours.
3606 return ('FAIL', "Hostnames may not contain anything other than (0-9 a-z . _)")
3607 if $defrec eq 'n' && ($revrec eq 'y' ? $$rectype != $reverse_typemap{TXT} : 1) &&
3608 $$host !~ /^[0-9a-z_%.-]+$/i;
3609
3610 # Collect these even if we're only doing a simple A record so we can call *any* validation sub
3611 my $dist = shift;
3612 my $weight = shift;
3613 my $port = shift;
3614
3615 my $fields;
3616 my @vallist;
3617
3618 # Call the validation sub for the type requested.
3619 ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec, id => $id,
3620 host => $host, rectype => $rectype, val => $val, addr => $addr,
3621 dist => \$dist, port => \$port, weight => \$weight,
3622 fields => \$fields, vallist => \@vallist);
3623
3624 return ($retcode,$retmsg) if $retcode eq 'FAIL';
3625
3626 # Set up database fields and bind parameters
3627 $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
3628 push @vallist, ($$host,$$rectype,$$val,$ttl,$id);
3629
3630 # locations are not for default records, silly coder!
3631 if ($defrec eq 'n') {
3632 $fields .= ",location";
3633 push @vallist, $location;
3634 }
3635 my $vallen = '?'.(',?'x$#vallist);
3636
3637 # Put together the success log entry. We have to use this horrible kludge
3638 # because domain_id and rdns_id may or may not be present, and if they are,
3639 # they're not at a guaranteed consistent index in the array. wheee!
3640 my %logdata;
3641 my @ftmp = split /,/, $fields;
3642 for (my $i=0; $i <= $#vallist; $i++) {
3643 $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
3644 $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
3645 }
3646 $logdata{group_id} = $id if $defrec eq 'y';
3647 $logdata{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec)
3648 if $defrec eq 'n';
3649 $logdata{entry} = "Added ".($defrec eq 'y' ? 'default record' : 'record');
3650 # NS records for revzones get special treatment
3651 if ($revrec eq 'y' && $$rectype == 2) {
3652 $logdata{entry} .= " '$$val $typemap{$$rectype} $$host";
3653 } else {
3654 $logdata{entry} .= " '$$host $typemap{$$rectype} $$val";
3655 }
3656
3657 $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
3658 $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]"
3659 if $typemap{$$rectype} eq 'SRV';
3660 $logdata{entry} .= "', TTL $ttl";
3661 $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location;
3662
3663 # Allow transactions, and raise an exception on errors so we can catch it later.
3664 # Use local to make sure these get "reset" properly on exiting this block
3665 local $dbh->{AutoCommit} = 0;
3666 local $dbh->{RaiseError} = 1;
3667
3668 eval {
3669 $dbh->do("INSERT INTO "._rectable($defrec, $revrec)." ($fields) VALUES ($vallen)",
3670 undef, @vallist);
3671 $self->_log(%logdata);
3672 $dbh->commit;
3673 };
3674 if ($@) {
3675 my $msg = $@;
3676 eval { $dbh->rollback; };
3677 if ($config{log_failures}) {
3678 $logdata{entry} = "Failed adding ".($defrec eq 'y' ? 'default ' : '').
3679 "record '$$host $typemap{$$rectype} $$val', TTL $ttl ($msg)";
3680 $self->_log(%logdata);
3681 $dbh->commit;
3682 }
3683 return ('FAIL',$msg);
3684 }
3685
3686 $resultstr = $logdata{entry};
3687 return ($retcode, $retmsg);
3688
3689} # end addRec()
3690
3691
3692## DNSDB::updateRec()
3693# Update a record
3694# Takes a database handle, default and reverse flags, record ID, immediate parent ID, and new record data.
3695# Returns a status code and message
3696sub updateRec {
3697 $errstr = '';
3698
3699 my $self = shift;
3700 my $dbh = $self->{dbh};
3701 my $defrec = shift;
3702 my $revrec = shift;
3703 my $id = shift;
3704 my $parid = shift; # immediate parent entity that we're descending from to update the record
3705
3706 # all records have these
3707 my $host = shift;
3708 my $hostbk = $$host; # Keep a backup copy of the original, so we can WARN if the update mangles the domain
3709 my $rectype = shift;
3710 my $val = shift;
3711 my $ttl = shift;
3712 my $location = shift; # may be empty/null/undef depending on caller
3713 $location = '' if !$location;
3714
3715 # Spaces are evil.
3716 $$host =~ s/^\s+//;
3717 $$host =~ s/\s+$//;
3718 if ($typemap{$$rectype} ne 'TXT') {
3719 # Leading or trailng spaces could be legit in TXT records.
3720 $$val =~ s/^\s+//;
3721 $$val =~ s/\s+$//;
3722 }
3723
3724 # prep for validation
3725 my $addr = NetAddr::IP->new($$val);
3726 $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
3727
3728 my $domid = 0;
3729 my $revid = 0;
3730
3731 my $retcode = 'OK'; # assume everything will go OK
3732 my $retmsg = '';
3733
3734 # do simple validation first
3735 return ('FAIL', "TTL must be numeric") unless $ttl =~ /^\d+$/;
3736
3737 # Quick check on hostname parts. Note the regex is more forgiving than the error message;
3738 # domain names technically are case-insensitive, and we use printf-like % codes for a couple
3739 # of types. Other things may also be added to validate default records of several flavours.
3740 return ('FAIL', "Hostnames may not contain anything other than (0-9 a-z - . _)")
3741 if $defrec eq 'n' && ($revrec eq 'y' ? $$rectype != $reverse_typemap{TXT} : 1) &&
3742 $$host !~ /^[0-9a-z_%.-]+$/i;
3743
3744 # only MX and SRV will use these
3745 my $dist = shift || 0;
3746 my $weight = shift || 0;
3747 my $port = shift || 0;
3748
3749 my $fields;
3750 my @vallist;
3751
3752 # get old record data so we have the right parent ID
3753 # and for logging (eventually)
3754 my $oldrec = $self->getRecLine($defrec, $revrec, $id);
3755
3756 # Call the validation sub for the type requested.
3757 # Note the ID to pass here is the *parent*, not the record
3758 ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec,
3759 id => ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})),
3760 host => $host, rectype => $rectype, val => $val, addr => $addr,
3761 dist => \$dist, port => \$port, weight => \$weight,
3762 fields => \$fields, vallist => \@vallist,
3763 update => $id);
3764
3765 return ($retcode,$retmsg) if $retcode eq 'FAIL';
3766
3767 # Set up database fields and bind parameters. Note only the optional fields
3768 # (distance, weight, port, secondary parent ID) are added in the validation call above
3769 $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
3770 push @vallist, ($$host,$$rectype,$$val,$ttl,
3771 ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})) );
3772
3773 # locations are not for default records, silly coder!
3774 if ($defrec eq 'n') {
3775 $fields .= ",location";
3776 push @vallist, $location;
3777 }
3778
3779 # hack hack PTHUI
3780 # need to forcibly make sure we disassociate a record with a parent it's no longer related to.
3781 # eg, PTR records may not have a domain parent, or A/AAAA records may not have a revzone parent.
3782 # mainly needed for crossover types that got coerced down to "standard" types
3783 if ($defrec eq 'n') {
3784 if ($$rectype == $reverse_typemap{PTR}) {
3785 $fields .= ",domain_id";
3786 push @vallist, 0;
3787 }
3788 if ($$rectype == $reverse_typemap{A} || $$rectype == $reverse_typemap{AAAA}) {
3789 $fields .= ",rdns_id";
3790 push @vallist, 0;
3791 }
3792 }
3793 # fix fat-finger-originated record type changes
3794 if ($$rectype == 65285) {
3795 $fields .= ",rdns_id" if $revrec eq 'n';
3796 $fields .= ",domain_id" if $revrec eq 'y';
3797 push @vallist, 0;
3798 }
3799 if ($defrec eq 'n') {
3800 $domid = $parid if $revrec eq 'n';
3801 $revid = $parid if $revrec eq 'y';
3802 }
3803
3804 # Put together the success log entry. Horrible kludge from addRec() copied as-is since
3805 # we don't know whether the passed arguments or retrieved values for domain_id and rdns_id
3806 # will be maintained (due to "not-in-zone" validation changes)
3807 my %logdata;
3808 $logdata{domain_id} = $domid;
3809 $logdata{rdns_id} = $revid;
3810 my @ftmp = split /,/, $fields;
3811 for (my $i=0; $i <= $#vallist; $i++) {
3812 $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
3813 $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
3814 }
3815 $logdata{group_id} = $parid if $defrec eq 'y';
3816 $logdata{group_id} = $self->parentID(id => $parid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec)
3817 if $defrec eq 'n';
3818 $logdata{entry} = "Updated ".($defrec eq 'y' ? 'default record' : 'record')." from\n";
3819 # NS records for revzones get special treatment
3820 if ($revrec eq 'y' && $$rectype == 2) {
3821 $logdata{entry} .= " '$oldrec->{val} $typemap{$oldrec->{type}} $oldrec->{host}";
3822 } else {
3823 $logdata{entry} .= " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
3824 }
3825 $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
3826 $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
3827 if $typemap{$oldrec->{type}} eq 'SRV';
3828 $logdata{entry} .= "', TTL $oldrec->{ttl}";
3829 $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location};
3830 $logdata{entry} .= "\nto\n";
3831 # More NS special
3832 if ($revrec eq 'y' && $$rectype == 2) {
3833 $logdata{entry} .= "'$$val $typemap{$$rectype} $$host";
3834 } else {
3835 $logdata{entry} .= "'$$host $typemap{$$rectype} $$val";
3836 }
3837 $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
3838 $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$$rectype} eq 'SRV';
3839 $logdata{entry} .= "', TTL $ttl";
3840 $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location;
3841
3842 local $dbh->{AutoCommit} = 0;
3843 local $dbh->{RaiseError} = 1;
3844
3845 # Fiddle the field list into something suitable for updates
3846 $fields =~ s/,/=?,/g;
3847 $fields .= "=?";
3848
3849 eval {
3850 $dbh->do("UPDATE "._rectable($defrec,$revrec)." SET $fields WHERE record_id=?", undef, (@vallist, $id) );
3851 $self->_log(%logdata);
3852 $dbh->commit;
3853 };
3854 if ($@) {
3855 my $msg = $@;
3856 eval { $dbh->rollback; };
3857 if ($config{log_failures}) {
3858 $logdata{entry} = "Failed updating ".($defrec eq 'y' ? 'default ' : '').
3859 "record '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
3860 $self->_log(%logdata);
3861 $dbh->commit;
3862 }
3863 return ('FAIL', $msg);
3864 }
3865
3866 $resultstr = $logdata{entry};
3867 return ($retcode, $retmsg);
3868} # end updateRec()
3869
3870
3871## DNSDB::downconvert()
3872# A mostly internal (not exported) semiutilty sub to downconvert from pseudotype <x>
3873# to a compatible component type. Only a handful of operations are valid, anything
3874# else is a null-op.
3875# Takes the record ID and the new type. Returns boolean.
3876sub downconvert {
3877 my $self = shift;
3878 my $dbh = $self->{dbh};
3879 my $recid = shift;
3880 my $newtype = shift;
3881
3882 # also, only work on live records; little to no value trying to do this on default records.
3883 my $rec = $self->getRecLine('n', 'y', $recid);
3884
3885 # hm?
3886 #return 1 if !$rec;
3887
3888 return 1 if $rec->{type} < 65000; # Only the reverse-record pseudotypes can be downconverted
3889 return 1 if $rec->{type} == 65282; # Nowhere to go
3890
3891 my $delpar;
3892 my @sqlargs;
3893 if ($rec->{type} == 65280) {
3894 return 1 if $newtype != 1 && $newtype != 12;
3895 $delpar = ($newtype == 1 ? 'rdns_id' : 'domain_id');
3896 push @sqlargs, 0, $newtype, $recid;
3897 } elsif ($rec->{type} == 65281) {
3898 return 1 if $newtype != 28 && $newtype != 12;
3899 $delpar = ($newtype == 28 ? 'rdns_id' : 'domain_id');
3900 push @sqlargs, 0, $newtype, $recid;
3901 } elsif ($rec->{type} == 65283) {
3902 return 1 if $newtype != 65282;
3903 $delpar = 'rdns_id';
3904 } elsif ($rec->{type} == 65284) {
3905 return 1 if $newtype != 65282;
3906 $delpar = 'rdns_id';
3907 } else {
3908 # Your llama is on fire.
3909 }
3910
3911 local $dbh->{AutoCommit} = 0;
3912 local $dbh->{RaiseError} = 1;
3913
3914 eval {
3915 $dbh->do("UPDATE records SET $delpar = ?, type = ? WHERE record_id = ?", undef, @sqlargs);
3916 $dbh->commit;
3917 };
3918 if ($@) {
3919 $errstr = $@;
3920 eval { $dbh->rollback; };
3921 return 0;
3922 }
3923 return 1;
3924} # end downconvert()
3925
3926
3927## DNSDB::delRec()
3928# Delete a record.
3929sub delRec {
3930 $errstr = '';
3931 my $self = shift;
3932 my $dbh = $self->{dbh};
3933 my $defrec = shift;
3934 my $revrec = shift;
3935 my $id = shift;
3936
3937 my $oldrec = $self->getRecLine($defrec, $revrec, $id);
3938
3939 # Allow transactions, and raise an exception on errors so we can catch it later.
3940 # Use local to make sure these get "reset" properly on exiting this block
3941 local $dbh->{AutoCommit} = 0;
3942 local $dbh->{RaiseError} = 1;
3943
3944 # Put together the log entry
3945 my %logdata;
3946 $logdata{domain_id} = $oldrec->{domain_id};
3947 $logdata{rdns_id} = $oldrec->{rdns_id};
3948 $logdata{group_id} = $oldrec->{group_id} if $defrec eq 'y';
3949 $logdata{group_id} = $self->parentID(id => $oldrec->{domain_id}, type => ($revrec eq 'n' ? 'domain' : 'revzone'),
3950 revrec => $revrec)
3951 if $defrec eq 'n';
3952 $logdata{entry} = "Deleted ".($defrec eq 'y' ? 'default record ' : 'record ').
3953 "'$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
3954 $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
3955 $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
3956 if $typemap{$oldrec->{type}} eq 'SRV';
3957 $logdata{entry} .= "', TTL $oldrec->{ttl}";
3958 $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location};
3959
3960 eval {
3961 my $sth = $dbh->do("DELETE FROM "._rectable($defrec,$revrec)." WHERE record_id=?", undef, ($id));
3962 $self->_log(%logdata);
3963 $dbh->commit;
3964 };
3965 if ($@) {
3966 my $msg = $@;
3967 eval { $dbh->rollback; };
3968 if ($config{log_failures}) {
3969 $logdata{entry} = "Error deleting ".($defrec eq 'y' ? 'default record' : 'record').
3970 " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
3971 $self->_log(%logdata);
3972 $dbh->commit;
3973 }
3974 return ('FAIL', $msg);
3975 }
3976
3977 return ('OK',$logdata{entry});
3978} # end delRec()
3979
3980
3981## DNSDB::getLogCount()
3982# Get a count of log entries
3983# Takes a database handle and a hash containing at least:
3984# - Entity ID and entity type as the primary log "slice"
3985sub getLogCount {
3986 my $self = shift;
3987 my $dbh = $self->{dbh};
3988
3989 my %args = @_;
3990
3991 my @filterargs;
3992##fixme: which fields do we want to filter on?
3993# push @filterargs,
3994
3995 $errstr = 'Missing primary parent ID and/or type';
3996 # fail early if we don't have a "prime" ID to look for log entries for
3997 return if !$args{id};
3998
3999 # or if the prime id type is missing or invalid
4000 return if !$args{logtype};
4001 $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui
4002 $args{logtype} = 'domain' if $args{logtype} eq 'dom'; # hack pthui
4003 return if !grep /^$args{logtype}$/, ('group', 'domain', 'revzone', 'user');
4004
4005 $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui
4006
4007 my $sql = "SELECT count(*) FROM log ".
4008 "WHERE $id_col{$args{logtype}}=?".
4009 ($args{filter} ? " AND entry ~* ?" : '');
4010 my ($count) = $dbh->selectrow_array($sql, undef, ($args{id}, @filterargs) );
4011 $errstr = $dbh->errstr if !$count;
4012 return $count;
4013} # end getLogCount()
4014
4015
4016## DNSDB::getLogEntries()
4017# Get a list of log entries
4018# Takes arguments as with getLogCount() above, plus optional:
4019# - sort field
4020# - sort order
4021# - offset for pagination
4022sub getLogEntries {
4023 my $self = shift;
4024 my $dbh = $self->{dbh};
4025
4026 my %args = @_;
4027
4028 my @filterargs;
4029
4030 # fail early if we don't have a "prime" ID to look for log entries for
4031 return if !$args{id};
4032
4033 # or if the prime id type is missing or invalid
4034 return if !$args{logtype};
4035 $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui
4036 $args{logtype} = 'domain' if $args{logtype} eq 'dom'; # hack pthui
4037 return if !grep /^$args{logtype}$/, ('group', 'domain', 'revzone', 'user');
4038
4039 # Sorting defaults
4040 $args{sortby} = 'stamp' if !$args{sortby};
4041 $args{sortorder} = 'DESC' if !$args{sortorder};
4042 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
4043
4044 my %sortmap = (fname => 'name', username => 'email', entry => 'entry', stamp => 'stamp');
4045 $args{sortby} = $sortmap{$args{sortby}};
4046
4047 my $sql = "SELECT user_id AS userid, email AS useremail, name AS userfname, entry AS logentry, ".
4048 "date_trunc('second',stamp) AS logtime ".
4049 "FROM log ".
4050 "WHERE $id_col{$args{logtype}}=?".
4051 ($args{filter} ? " AND entry ~* ?" : '').
4052 " ORDER BY $args{sortby} $args{sortorder}, log_id $args{sortorder}".
4053 ($args{offset} eq 'all' ? '' : " LIMIT $config{perpage} OFFSET ".$args{offset}*$config{perpage});
4054 my $loglist = $dbh->selectall_arrayref($sql, { Slice => {} }, ($args{id}, @filterargs) );
4055 $errstr = $dbh->errstr if !$loglist;
4056 return $loglist;
4057} # end getLogEntries()
4058
4059
4060## IPDB::getRevPattern()
4061# Get the narrowest template pattern applicable to a passed CIDR address (may be a netblock or an IP)
4062sub getRevPattern {
4063 my $self = shift;
4064 my $dbh = $self->{dbh};
4065 my $cidr = shift;
4066 my $group = shift || 1; # just in case
4067
4068 # for speed! Casting and comparing even ~7K records takes ~2.5s, so narrow it down to one revzone first.
4069 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >>= ? AND group_id = ?",
4070 undef, ($cidr, $group) );
4071
4072##fixme? may need to narrow things down more by octet-chopping and doing text comparisons before casting.
4073 my ($revpatt) = $dbh->selectrow_array("SELECT host FROM records ".
4074 "WHERE (type in (12,65280,65281,65282,65283,65284)) AND rdns_id = ? AND CAST (val AS inet) >>= ? ".
4075 "ORDER BY CAST (val AS inet) DESC LIMIT 1", undef, ($revid, $cidr) );
4076 return $revpatt;
4077} # end getRevPattern()
4078
4079
4080## DNSDB::getTypelist()
4081# Get a list of record types for various UI dropdowns
4082# Takes database handle, forward/reverse/lookup flag, and optional "tag as selected" indicator (defaults to A)
4083# Returns an arrayref to list of hashrefs perfect for HTML::Template
4084sub getTypelist {
4085 my $self = shift;
4086 my $dbh = $self->{dbh};
4087 my $recgroup = shift;
4088 my $type = shift || $reverse_typemap{A};
4089
4090 # also accepting $webvar{revrec}!
4091 $recgroup = 'f' if $recgroup eq 'n';
4092 $recgroup = 'r' if $recgroup eq 'y';
4093
4094 my $sql = "SELECT val,name FROM rectypes WHERE ";
4095 if ($recgroup eq 'r') {
4096 # reverse zone types
4097 $sql .= "stdflag=2 OR stdflag=3";
4098 } elsif ($recgroup eq 'l') {
4099 # DNS lookup types. Note we avoid our custom types >= 65280, since those are entirely internal.
4100 $sql .= "(stdflag=1 OR stdflag=2 OR stdflag=3) AND val < 65280";
4101 } else {
4102 # default; forward zone types. technically $type eq 'f' but not worth the error message.
4103 $sql .= "stdflag=1 OR stdflag=2";
4104 }
4105 $sql .= " ORDER BY listorder";
4106
4107 my $sth = $dbh->prepare($sql);
4108 $sth->execute;
4109 my @typelist;
4110 while (my ($rval,$rname) = $sth->fetchrow_array()) {
4111 my %row = ( recval => $rval, recname => $rname );
4112 $row{tselect} = 1 if $rval == $type;
4113 push @typelist, \%row;
4114 }
4115
4116 # Add SOA on lookups since it's not listed in other dropdowns.
4117 if ($recgroup eq 'l') {
4118 my %row = ( recval => $reverse_typemap{SOA}, recname => 'SOA' );
4119 $row{tselect} = 1 if $reverse_typemap{SOA} == $type;
4120 push @typelist, \%row;
4121 }
4122
4123 return \@typelist;
4124} # end getTypelist()
4125
4126
4127## DNSDB::parentID()
4128# Get ID of entity that is nearest parent to requested id
4129# Takes a database handle and a hash of entity ID, entity type, optional parent type flag
4130# (domain/reverse zone or group), and optional default/live and forward/reverse flags
4131# Returns the ID or undef on failure
4132sub parentID {
4133 my $self = shift;
4134 my $dbh = $self->{dbh};
4135
4136 my %args = @_;
4137
4138 # clean up the parent-type. Set it to group if not set; coerce revzone to domain for simpler logic
4139 $args{partype} = 'group' if !$args{partype};
4140 $args{partype} = 'domain' if $args{partype} eq 'revzone';
4141
4142 # clean up defrec and revrec. default to live record, forward zone
4143 $args{defrec} = 'n' if !$args{defrec};
4144 $args{revrec} = 'n' if !$args{revrec};
4145
4146 if ($par_type{$args{partype}} eq 'domain') {
4147 # only live records can have a domain/zone parent
4148 return unless ($args{type} eq 'record' && $args{defrec} eq 'n');
4149 my $result = $dbh->selectrow_hashref("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
4150 " FROM records WHERE record_id = ?",
4151 undef, ($args{id}) ) or return;
4152 return $result;
4153 } else {
4154 # snag some arguments that will either fall through or be overwritten to save some code duplication
4155 my $tmpid = $args{id};
4156 my $type = $args{type};
4157 if ($type eq 'record' && $args{defrec} eq 'n') {
4158 # Live records go through the records table first.
4159 ($tmpid) = $dbh->selectrow_array("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
4160 " FROM records WHERE record_id = ?",
4161 undef, ($args{id}) ) or return;
4162 $type = ($args{revrec} eq 'n' ? 'domain' : 'revzone');
4163 }
4164 my ($result) = $dbh->selectrow_array("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?",
4165 undef, ($tmpid) );
4166 return $result;
4167 }
4168# should be impossible to get here with even remotely sane arguments
4169 return;
4170} # end parentID()
4171
4172
4173## DNSDB::isParent()
4174# Returns true if $id1 is a parent of $id2, false otherwise
4175sub isParent {
4176 my $self = shift;
4177 my $dbh = $self->{dbh};
4178 my $id1 = shift;
4179 my $type1 = shift;
4180 my $id2 = shift;
4181 my $type2 = shift;
4182##todo: immediate, secondary, full (default)
4183
4184 # Return false on invalid types
4185 return 0 if !grep /^$type1$/, ('record','defrec','defrevrec','user','domain','revzone','group');
4186 return 0 if !grep /^$type2$/, ('record','defrec','defrevrec','user','domain','revzone','group');
4187
4188 # Return false on impossible relations
4189 return 0 if $type1 eq 'record'; # nothing may be a child of a record
4190 return 0 if $type1 eq 'defrec'; # nothing may be a child of a record
4191 return 0 if $type1 eq 'defrevrec'; # nothing may be a child of a record
4192 return 0 if $type1 eq 'user'; # nothing may be child of a user
4193 return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record
4194 return 0 if $type1 eq 'revzone' && $type2 ne 'record';# reverse zone may not be a parent of anything other than a record
4195
4196 # ennnhhhh.... if we're passed an id of 0, it will never be found. usual
4197 # case would be the UI creating a new <thing>, and so we don't have an ID for
4198 # <thing> to look up yet. in that case the UI should check the parent as well.
4199 return 0 if $id1 == 0; # nothing can have a parent id of 0
4200 return 1 if $id2 == 0; # anything could have a child id of 0 (or "unknown")
4201
4202 # group 1 is the ultimate root parent
4203 return 1 if $type1 eq 'group' && $id1 == 1;
4204
4205 # groups are always (a) parent of themselves
4206 return 1 if $type1 eq 'group' && $type2 eq 'group' && $id1 == $id2;
4207
4208 my $id = $id2;
4209 my $type = $type2;
4210 my $foundparent = 0;
4211
4212 # Records are the only entity with two possible parents. We need to split the parent checks on
4213 # domain/rdns.
4214 if ($type eq 'record') {
4215 my ($dom,$rdns) = $dbh->selectrow_array("SELECT domain_id,rdns_id FROM records WHERE record_id=?",
4216 undef, ($id));
4217 # check immediate parent against request
4218 return 1 if $type1 eq 'domain' && $id1 == $dom;
4219 return 1 if $type1 eq 'revzone' && $id1 == $rdns;
4220 # if request is group, check *both* parents. Only check if the parent is nonzero though.
4221 return 1 if $dom && $self->isParent($id1, $type1, $dom, 'domain');
4222 return 1 if $rdns && $self->isParent($id1, $type1, $rdns, 'revzone');
4223 # exit here since we've executed the loop below by proxy in the above recursive calls.
4224 return 0;
4225 }
4226
4227# almost the same loop as getParents() above
4228 my $limiter = 0;
4229 while (1) {
4230 my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?";
4231 my $result = $dbh->selectrow_hashref($sql,
4232 undef, ($id) );
4233 if (!$result) {
4234 $limiter++;
4235##fixme: how often will this happen on a live site? fail at max limiter <n>?
4236 warn "no results looking for $sql with id $id (depth $limiter)\n";
4237 last;
4238 }
4239 if ($result && $result->{$par_col{$type}} == $id1) {
4240 $foundparent = 1;
4241 last;
4242 } else {
4243##fixme: do we care about trying to return a "no such record/domain/user/group" error?
4244# should be impossible to create an inconsistent DB just with API calls.
4245 warn $dbh->errstr." $sql, $id" if $dbh->errstr;
4246 }
4247 # group 1 is its own parent. need this here more to break strange loops than for detecting a parent
4248 last if $result->{$par_col{$type}} == 1;
4249 $id = $result->{$par_col{$type}};
4250 $type = $par_type{$type};
4251 }
4252
4253 return $foundparent;
4254} # end isParent()
4255
4256
4257## DNSDB::zoneStatus()
4258# Returns and optionally sets a zone's status
4259# Takes a database handle, domain/revzone ID, forward/reverse flag, and optionally a status argument
4260# Returns status, or undef on errors.
4261sub zoneStatus {
4262 my $self = shift;
4263 my $dbh = $self->{dbh};
4264 my $id = shift;
4265 my $revrec = shift;
4266 my $newstatus = shift || 'mu';
4267
4268 return undef if $id !~ /^\d+$/;
4269
4270 # Allow transactions, and raise an exception on errors so we can catch it later.
4271 # Use local to make sure these get "reset" properly on exiting this block
4272 local $dbh->{AutoCommit} = 0;
4273 local $dbh->{RaiseError} = 1;
4274
4275 if ($newstatus ne 'mu') {
4276 # ooo, fun! let's see what we were passed for status
4277 eval {
4278 $newstatus = 0 if $newstatus eq 'domoff';
4279 $newstatus = 1 if $newstatus eq 'domon';
4280 $dbh->do("UPDATE ".($revrec eq 'n' ? 'domains' : 'revzones')." SET status=? WHERE ".
4281 ($revrec eq 'n' ? 'domain_id' : 'rdns_id')."=?", undef, ($newstatus,$id) );
4282
4283##fixme switch to more consise "Enabled <domain"/"Disabled <domain>" as with users?
4284 $resultstr = "Changed ".($revrec eq 'n' ? $self->domainName($id) : $self->revName($id)).
4285 " state to ".($newstatus ? 'active' : 'inactive');
4286
4287 my %loghash;
4288 $loghash{domain_id} = $id if $revrec eq 'n';
4289 $loghash{rdns_id} = $id if $revrec eq 'y';
4290 $loghash{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec);
4291 $loghash{entry} = $resultstr;
4292 $self->_log(%loghash);
4293
4294 $dbh->commit;
4295 };
4296 if ($@) {
4297 my $msg = $@;
4298 eval { $dbh->rollback; };
4299 $resultstr = '';
4300 $errstr = $msg;
4301 return;
4302 }
4303 }
4304
4305 my ($status) = $dbh->selectrow_array("SELECT status FROM ".
4306 ($revrec eq 'n' ? "domains WHERE domain_id=?" : "revzones WHERE rdns_id=?"),
4307 undef, ($id) );
4308 return $status;
4309} # end zoneStatus()
4310
4311
4312## DNSDB::getZonesByCIDR()
4313# Get a list of zone names and IDs that records for a passed CIDR block are within.
4314sub getZonesByCIDR {
4315 my $self = shift;
4316 my $dbh = $self->{dbh};
4317 my %args = @_;
4318
4319 my $result = $dbh->selectall_arrayref("SELECT rdns_id,revnet FROM revzones WHERE revnet >>= ? OR revnet <<= ?",
4320 { Slice => {} }, ($args{cidr}, $args{cidr}) );
4321 return $result;
4322} # end getZonesByCIDR()
4323
4324
4325## DNSDB::importAXFR
4326# Import a domain via AXFR
4327# Takes AXFR host, domain to transfer, group to put the domain in,
4328# and an optional hash containing:
4329# status - active/inactive state flag (defaults to active)
4330# rwsoa - overwrite-SOA flag (defaults to off)
4331# rwns - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
4332# merge - flag to automerge A or AAAA records with matching PTR records
4333# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
4334# if status is OK, but WARN includes conditions that are not fatal but should
4335# really be reported.
4336sub importAXFR {
4337 my $self = shift;
4338 my $dbh = $self->{dbh};
4339 my $ifrom_in = shift;
4340 my $zone = shift;
4341 my $group = shift;
4342
4343 my %args = @_;
4344
4345##fixme: add mode to delete&replace, merge+overwrite, merge new?
4346
4347 $args{status} = (defined($args{status}) ? $args{status} : 0);
4348 $args{status} = 1 if $args{status} eq 'on';
4349
4350 my $nrecs = 0;
4351 my $soaflag = 0;
4352 my $nsflag = 0;
4353 my $warnmsg = '';
4354 my $ifrom;
4355
4356 my $rev = 'n';
4357 my $code = 'OK';
4358 my $msg = 'foobar?';
4359
4360 # choke on possible bad setting in ifrom
4361 # IPv4 and v6, and valid hostnames!
4362 ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
4363 return ('FAIL', "Bad AXFR source host $ifrom")
4364 unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
4365
4366 my $errmsg;
4367
4368 my $zone_id;
4369 my $domain_id = 0;
4370 my $rdns_id = 0;
4371 my $cidr;
4372
4373# magic happens! detect if we're importing a domain or a reverse zone
4374# while we're at it, figure out what the CIDR netblock is (if we got a .arpa)
4375# or what the formal .arpa zone is (if we got a CIDR netblock)
4376# Handles sub-octet v4 zones in the format specified in the Cricket Book, 2nd Ed, p217-218
4377
4378 if ($zone =~ m{(?:\.arpa\.?|/\d+)$}) {
4379 # we seem to have a reverse zone
4380 $rev = 'y';
4381
4382 if ($zone =~ /\.arpa\.?$/) {
4383 # we have a formal reverse zone. call _zone2cidr and get the CIDR block.
4384 ($code,$msg) = _zone2cidr($zone);
4385 return ($code, $msg) if $code eq 'FAIL';
4386 $cidr = $msg;
4387 } elsif ($zone =~ m|^[\d.]+/\d+$|) {
4388 # v4 revzone, CIDR netblock
4389 $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block");
4390 $zone = _ZONE($cidr, 'ZONE.in-addr.arpa', 'r', '.');
4391 } elsif ($zone =~ m|^[a-fA-F\d:]+/\d+$|) {
4392 # v6 revzone, CIDR netblock
4393 $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block");
4394 return ('FAIL', "$zone is not a nibble-aligned block") if $cidr->masklen % 4 != 0;
4395 $zone = _ZONE($cidr, 'ZONE.ip6.arpa', 'r', '.');
4396 } else {
4397 # there is. no. else!
4398 return ('FAIL', "Unknown zone name format");
4399 }
4400
4401 # quick check to start to see if we've already got one
4402
4403 ($zone_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?",
4404 undef, ("$cidr"));
4405 $rdns_id = $zone_id;
4406 } else {
4407 # default to domain
4408 ($zone_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
4409 undef, ($zone));
4410 $domain_id = $zone_id;
4411 }
4412
4413 return ('FAIL', ($rev eq 'n' ? 'Domain' : 'Reverse zone')." already exists") if $zone_id;
4414
4415 # little local utility sub to swap $val and $host for revzone records.
4416 sub _revswap {
4417 my $rechost = shift;
4418 my $recdata = shift;
4419
4420 if ($rechost =~ /\.in-addr\.arpa\.?$/) {
4421 $rechost =~ s/\.in-addr\.arpa\.?$//;
4422 $rechost = join '.', reverse split /\./, $rechost;
4423 } else {
4424 $rechost =~ s/\.ip6\.arpa\.?$//;
4425 my @nibs = reverse split /\./, $rechost;
4426 $rechost = '';
4427 my $nc;
4428 foreach (@nibs) {
4429 $rechost.= $_;
4430 $rechost .= ":" if ++$nc % 4 == 0 && $nc < 32;
4431 }
4432 $rechost .= ":" if $nc < 32 && $rechost !~ /\*$/; # close netblock records?
4433##fixme: there's a case that ends up with a partial entry here:
4434# ip:add:re:ss::
4435# can't reproduce after letting it sit overnight after discovery. :(
4436#print "$rechost\n";
4437 # canonicalize with NetAddr::IP
4438 $rechost = NetAddr::IP->new($rechost)->addr unless $rechost =~ /\*$/;
4439 }
4440 return ($recdata,$rechost)
4441 }
4442
4443
4444 # Allow transactions, and raise an exception on errors so we can catch it later.
4445 # Use local to make sure these get "reset" properly on exiting this block
4446 local $dbh->{AutoCommit} = 0;
4447 local $dbh->{RaiseError} = 1;
4448
4449 my $sth;
4450 eval {
4451
4452 if ($rev eq 'n') {
4453##fixme: serial
4454 $dbh->do("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)", undef,
4455 ($zone, $group, $args{status}) );
4456 # get domain id so we can do the records
4457 ($zone_id) = $dbh->selectrow_array("SELECT currval('domains_domain_id_seq')");
4458 $domain_id = $zone_id;
4459 $self->_log(group_id => $group, domain_id => $domain_id,
4460 entry => "[Added ".($args{status} ? 'active' : 'inactive')." domain $zone via AXFR]");
4461 } else {
4462##fixme: serial
4463 $dbh->do("INSERT INTO revzones (revnet,group_id,status) VALUES (?,?,?)", undef,
4464 ($cidr,$group,$args{status}) );
4465 # get revzone id so we can do the records
4466 ($zone_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')");
4467 $rdns_id = $zone_id;
4468 $self->_log(group_id => $group, rdns_id => $rdns_id,
4469 entry => "[Added ".($args{status} ? 'active' : 'inactive')." reverse zone $cidr via AXFR]");
4470 }
4471
4472## bizarre DBI<->Net::DNS interaction bug:
4473## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
4474## fixed, apparently I was doing *something* odd, but not certain what it was that
4475## caused a commit instead of barfing
4476
4477 my $res = Net::DNS::Resolver->new;
4478 $res->nameservers($ifrom);
4479 $res->axfr_start($zone)
4480 or die "Couldn't begin AXFR\n";
4481
4482 $sth = $dbh->prepare("INSERT INTO records (domain_id,rdns_id,host,type,val,distance,weight,port,ttl)".
4483 " VALUES (?,?,?,?,?,?,?,?,?)");
4484
4485 # Stash info about sub-octet v4 revzones here so we don't have
4486 # to store the CNAMEs used to delegate a suboctet zone
4487 # $suboct{zone}{ns}[] -> array of nameservers
4488 # $suboct{zone}{cname}[] -> array of extant CNAMEs (Just In Case someone did something bizarre)
4489## commented pending actual use of this data. for now, we'll just
4490## auto-(re)create the CNAMEs in revzones on export
4491# my %suboct;
4492
4493 while (my $rr = $res->axfr_next()) {
4494
4495 my $val;
4496 my $distance = 0;
4497 my $weight = 0;
4498 my $port = 0;
4499 my $logfrag = '';
4500
4501 my $type = $rr->type;
4502 my $host = $rr->name;
4503 my $ttl = ($args{newttl} ? $args{newttl} : $rr->ttl); # allow force-override TTLs
4504
4505 $soaflag = 1 if $type eq 'SOA';
4506 $nsflag = 1 if $type eq 'NS';
4507
4508# "Primary" types:
4509# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
4510# maybe KEY
4511
4512# BIND supports:
4513# [standard]
4514# A AAAA CNAME MX NS PTR SOA TXT
4515# [variously experimental, obsolete, or obscure]
4516# HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) NULL WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX
4517# ... if one can ever find the right magic to format them correctly
4518
4519# Net::DNS supports:
4520# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
4521# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
4522# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
4523
4524# nasty big ugly case-like thing here, since we have to do *some* different
4525# processing depending on the record. le sigh.
4526
4527##fixme: what record types other than TXT can/will have >255-byte payloads?
4528
4529 if ($type eq 'A') {
4530 $val = $rr->address;
4531 } elsif ($type eq 'NS') {
4532# hmm. should we warn here if subdomain NS'es are left alone?
4533 next if ($args{rwns} && ($rr->name eq $zone));
4534 if ($rev eq 'y') {
4535 # revzones have records more or less reversed from forward zones.
4536 my ($tmpcode,$tmpmsg) = _zone2cidr($host);
4537 die "Error converting NS record: $tmpmsg\n" if $tmpcode eq 'FAIL'; # hmm. may not make sense...
4538 $val = "$tmpmsg";
4539 $host = $rr->nsdname;
4540 $logfrag = "Added record '$val $type $host', TTL $ttl";
4541# Tag and preserve. For now this is commented for a no-op, but we have Ideas for
4542# another custom storage type ("DELEGATE") that will use these subzone-delegation records
4543#if ($val ne "$cidr") {
4544# push @{$suboct{$val}{ns}}, $host;
4545#}
4546 } else {
4547 $val = $rr->nsdname;
4548 }
4549 $nsflag = 1;
4550 } elsif ($type eq 'CNAME') {
4551 if ($rev eq 'y') {
4552 # hmm. do we even want to bother with storing these at this level? Sub-octet delegation
4553 # by CNAME is essentially a record-publication hack, and we want to just represent the
4554 # "true" logical intentions as far down the stack as we can from the UI.
4555 ($host,$val) = _revswap($host,$rr->cname);
4556 $logfrag = "Added record '$val $type $host', TTL $ttl";
4557# Tag and preserve in case we want to commit them as-is later, but mostly we don't care.
4558# Commented pending actually doing something with possibly new type DELEGATE
4559#my $tmprev = $host;
4560#$tmprev =~ s/^\d+\.//;
4561#($code,$tmprev) = _zone2cidr($tmprev);
4562#push @{$suboct{"$tmprev"}{cname}}, $val;
4563 # Silently skip CNAMEs in revzones.
4564 next;
4565 } else {
4566 $val = $rr->cname;
4567 }
4568 } elsif ($type eq 'SOA') {
4569 next if $args{rwsoa};
4570 $host = $rr->rname.":".$rr->mname;
4571 $val = $rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum;
4572 $soaflag = 1;
4573 } elsif ($type eq 'PTR') {
4574 ($host,$val) = _revswap($host,$rr->ptrdname);
4575 $logfrag = "Added record '$val $type $host', TTL $ttl";
4576 # hmm. PTR records should not be in forward zones.
4577 } elsif ($type eq 'MX') {
4578 $val = $rr->exchange;
4579 $distance = $rr->preference;
4580 } elsif ($type eq 'TXT') {
4581##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
4582## but don't really seem enthusiastic about it.
4583#print "should use rdatastr:\n\t".$rr->rdatastr."\n or char_str_list:\n\t".join(' ',$rr->char_str_list())."\n";
4584# rdatastr returns a BIND-targetted logical string, including opening and closing quotes
4585# char_str_list returns a list of the individual string fragments in the record
4586# txtdata returns the more useful all-in-one form (since we want to push such protocol
4587# details as far down the stack as we can)
4588# NB: this may turn out to be more troublesome if we ever have need of >512-byte TXT records.
4589 if ($rev eq 'y') {
4590 ($host,$val) = _revswap($host,$rr->txtdata);
4591 $logfrag = "Added record '$val $type $host', TTL $ttl";
4592 } else {
4593 $val = $rr->txtdata;
4594 }
4595 } elsif ($type eq 'SPF') {
4596##fixme: and the same caveat here, since it is apparently a clone of ::TXT
4597 $val = $rr->txtdata;
4598 } elsif ($type eq 'AAAA') {
4599 $val = $rr->address;
4600 } elsif ($type eq 'SRV') {
4601 $val = $rr->target;
4602 $distance = $rr->priority;
4603 $weight = $rr->weight;
4604 $port = $rr->port;
4605 } elsif ($type eq 'KEY') {
4606 # we don't actually know what to do with these...
4607 $val = $rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname;
4608 } else {
4609 $val = $rr->rdatastr;
4610 # Finding a different record type is not fatal.... just problematic.
4611 # We may not be able to export it correctly.
4612 $warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
4613 }
4614
4615 my $logentry = "[AXFR ".($rev eq 'n' ? $zone : $cidr)."] ";
4616
4617 if ($args{merge}) {
4618 if ($rev eq 'n') {
4619 # importing a domain; we have A and AAAA records that could be merged with matching PTR records
4620 my $etype;
4621 my ($erdns,$erid,$ettl) = $dbh->selectrow_array("SELECT rdns_id,record_id,ttl FROM records ".
4622 "WHERE host=? AND val=? AND type=12",
4623 undef, ($host, $val) );
4624 if ($erid) {
4625 if ($type eq 'A') { # PTR -> A+PTR
4626 $etype = 65280;
4627 $logentry .= "Merged A record with existing PTR record '$host A+PTR $val', TTL $ettl";
4628 }
4629 if ($type eq 'AAAA') { # PTR -> AAAA+PTR
4630 $etype = 65281;
4631 $logentry .= "Merged AAAA record with existing PTR record '$host AAAA+PTR $val', TTL $ettl";
4632 }
4633 $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL
4634 $dbh->do("UPDATE records SET domain_id=?,ttl=?,type=? WHERE record_id=?", undef,
4635 ($domain_id, $ettl, $etype, $erid));
4636 $nrecs++;
4637 $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $erdns, entry => $logentry);
4638 next; # while axfr_next
4639 }
4640 } # $rev eq 'n'
4641 else {
4642 # importing a revzone, we have PTR records that could be merged with matching A/AAAA records
4643 my ($domid,$erid,$ettl,$etype) = $dbh->selectrow_array("SELECT domain_id,record_id,ttl,type FROM records ".
4644 "WHERE host=? AND val=? AND (type=1 OR type=28)",
4645 undef, ($host, $val) );
4646 if ($erid) {
4647 if ($etype == 1) { # A -> A+PTR
4648 $etype = 65280;
4649 $logentry .= "Merged PTR record with existing matching A record '$host A+PTR $val', TTL $ettl";
4650 }
4651 if ($etype == 28) { # AAAA -> AAAA+PTR
4652 $etype = 65281;
4653 $logentry .= "Merged PTR record with existing matching AAAA record '$host AAAA+PTR $val', TTL $ettl";
4654 }
4655 $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL
4656 $dbh->do("UPDATE records SET rdns_id=?,ttl=?,type=? WHERE record_id=?", undef,
4657 ($rdns_id, $ettl, $etype, $erid));
4658 $nrecs++;
4659 $self->_log(group_id => $group, domain_id => $domid, rdns_id => $rdns_id, entry => $logentry);
4660 next; # while axfr_next
4661 }
4662 } # $rev eq 'y'
4663 } # if $args{merge}
4664
4665 # Insert the new record
4666 $sth->execute($domain_id, $rdns_id, $host, $reverse_typemap{$type}, $val,
4667 $distance, $weight, $port, $ttl);
4668
4669 $nrecs++;
4670
4671 if ($type eq 'SOA') {
4672 # also !$args{rwsoa}, but if that's set, it should be impossible to get here.
4673 my @tmp1 = split /:/, $host;
4674 my @tmp2 = split /:/, $val;
4675 $logentry .= "Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
4676 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl";
4677 } elsif ($logfrag) {
4678 # special case for log entries we need to meddle with a little.
4679 $logentry .= $logfrag;
4680 } else {
4681 $logentry .= "Added record '$host $type";
4682 $logentry .= " [distance $distance]" if $type eq 'MX';
4683 $logentry .= " [priority $distance] [weight $weight] [port $port]" if $type eq 'SRV';
4684 $logentry .= " $val', TTL $ttl";
4685 }
4686 $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $rdns_id, entry => $logentry);
4687
4688 } # while axfr_next
4689
4690# Detect and handle delegated subzones
4691# Placeholder for when we decide what to actually do with this, see previous comments in NS and CNAME handling.
4692#foreach (keys %suboct) {
4693# print "found ".($suboct{$_}{ns} ? @{$suboct{$_}{ns}} : '0')." NS records and ".
4694# ($suboct{$_}{cname} ? @{$suboct{$_}{cname}} : '0')." CNAMEs for $_\n";
4695#}
4696
4697 # Overwrite SOA record
4698 if ($args{rwsoa}) {
4699 $soaflag = 1;
4700 my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
4701 my $sthputsoa = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
4702 $sthgetsoa->execute($group,$reverse_typemap{SOA});
4703 while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
4704 $host =~ s/DOMAIN/$zone/g;
4705 $val =~ s/DOMAIN/$zone/g;
4706 $sthputsoa->execute($zone_id,$host,$reverse_typemap{SOA},$val,$ttl);
4707 }
4708 }
4709
4710 # Overwrite NS records
4711 if ($args{rwns}) {
4712 $nsflag = 1;
4713 my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
4714 my $sthputns = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
4715 $sthgetns->execute($group,$reverse_typemap{NS});
4716 while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
4717 $host =~ s/DOMAIN/$zone/g;
4718 $val =~ s/DOMAIN/$zone/g;
4719 $sthputns->execute($zone_id,$host,$reverse_typemap{NS},$val,$ttl);
4720 }
4721 }
4722
4723 die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
4724 die "Bad zone: No SOA record!\n" if !$soaflag;
4725 die "Bad zone: No NS records!\n" if !$nsflag;
4726
4727 $dbh->commit;
4728
4729 };
4730
4731 if ($@) {
4732 my $msg = $@;
4733 eval { $dbh->rollback; };
4734 return ('FAIL',$msg." $warnmsg");
4735 } else {
4736 return ('WARN', $warnmsg) if $warnmsg;
4737 return ('OK',"Imported OK");
4738 }
4739
4740 # it should be impossible to get here.
4741 return ('WARN',"OOOK!");
4742} # end importAXFR()
4743
4744
4745## DNSDB::importBIND()
4746sub importBIND {
4747} # end importBIND()
4748
4749
4750## DNSDB::import_tinydns()
4751sub import_tinydns {
4752} # end import_tinydns()
4753
4754
4755## DNSDB::export()
4756# Export the DNS database, or a part of it
4757# Takes a string indicating the export type, plus optional arguments depending on type
4758# Writes zone data to targets as appropriate for type
4759sub export {
4760 my $self = shift;
4761 my $target = shift;
4762
4763 if ($target eq 'tiny') {
4764 $self->__export_tiny(@_);
4765 }
4766# elsif ($target eq 'foo') {
4767# __export_foo(@_);
4768#}
4769# etc
4770
4771} # end export()
4772
4773
4774## DNSDB::__export_tiny
4775# Internal sub to implement tinyDNS (compatible) export
4776# Takes filehandle to write export to, optional argument(s)
4777# to determine which data gets exported
4778sub __export_tiny {
4779 my $self = shift;
4780 my $dbh = $self->{dbh};
4781 my $datafile = shift;
4782
4783##fixme: slurp up further options to specify particular zone(s) to export
4784
4785##fixme: fail if $datafile isn't an open, writable file
4786
4787 # easy case - export all evarything
4788 # not-so-easy case - export item(s) specified
4789 # todo: figure out what kind of list we use to export items
4790
4791# raw packet in unknown format: first byte indicates length
4792# of remaining data, allows up to 255 raw bytes
4793
4794 # Locations/views - worth including in the caching setup?
4795 my $lochash = $dbh->selectall_hashref("SELECT location,iplist FROM locations", 'location');
4796 foreach my $location (keys %$lochash) {
4797 foreach my $ipprefix (split /[,\s]+/, $lochash->{$location}{iplist}) {
4798 $ipprefix =~ s/\s+//g;
4799 $ipprefix = new NetAddr::IP $ipprefix;
4800##fixme: how to handle IPv6?
4801next if $ipprefix->{isv6};
4802 # have to account for /nn CIDR entries. tinydns only speaks octet-sliced prefix.
4803 if ($ipprefix->masklen <= 8) {
4804 foreach ($ipprefix->split(8)) {
4805 my $tmp = $_->addr;
4806 $tmp =~ s/\.\d+\.\d+\.\d+$//;
4807 print $datafile "%$location:$tmp\n";
4808 }
4809 } elsif ($ipprefix->masklen <= 16) {
4810 foreach ($ipprefix->split(16)) {
4811 my $tmp = $_->addr;
4812 $tmp =~ s/\.\d+\.\d+$//;
4813 print $datafile "%$location:$tmp\n";
4814 }
4815 } elsif ($ipprefix->masklen <= 24) {
4816 foreach ($ipprefix->split(24)) {
4817 my $tmp = $_->addr;
4818 $tmp =~ s/\.\d+$//;
4819 print $datafile "%$location:$tmp\n";
4820 }
4821 } else {
4822 foreach ($ipprefix->split(32)) {
4823 print $datafile "%$location:".$_->addr."\n";
4824 }
4825 }
4826 }
4827 print $datafile "%$location\n" if !$lochash->{$location}{iplist};
4828 }
4829
4830 # tracking hash so we don't double-export A+PTR or AAAA+PTR records.
4831 my %recflags;
4832
4833 my $domsth = $dbh->prepare("SELECT domain_id,domain,status,changed FROM domains WHERE status=1");
4834 my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
4835 "FROM records WHERE domain_id=? AND type < 65280"); # Just exclude all types relating to rDNS
4836 my $zonesth = $dbh->prepare("UPDATE domains SET changed='n' WHERE domain_id=?");
4837 $domsth->execute();
4838 while (my ($domid,$dom,$domstat,$changed) = $domsth->fetchrow_array) {
4839##fixme: need to find a way to block opening symlinked files without introducing a race.
4840# O_NOFOLLOW
4841# If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was
4842# added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will
4843# still be followed.
4844# but that doesn't help other platforms. :/
4845 sysopen(ZONECACHE, "$config{exportcache}/$dom", O_RDWR|O_CREAT);
4846 flock(ZONECACHE, LOCK_EX);
4847 if ($changed || -s "$config{exportcache}/$dom" == 0) {
4848 $recsth->execute($domid);
4849 while (my ($host,$type,$val,$dist,$weight,$port,$ttl,$recid,$loc) = $recsth->fetchrow_array) {
4850 next if $recflags{$recid};
4851
4852 $loc = '' if !$loc; # de-nullify - just in case
4853##fixme: handle case of record-with-location-that-doesn't-exist better.
4854# note this currently fails safe (tested) - records with a location that
4855# doesn't exist will not be sent to any client
4856# $loc = '' if !$lochash->{$loc};
4857
4858##fixme: record validity timestamp. tinydns supports fiddling with timestamps.
4859# note $ttl must be set to 0 if we want to use tinydns's auto-expiring timestamps.
4860# timestamps are TAI64
4861# ~~ 2^62 + time()
4862 my $stamp = '';
4863
4864 # support tinydns' auto-TTL
4865 $ttl = '' if $ttl == '0';
4866
4867 # Spaces are evil.
4868 $host =~ s/^\s+//;
4869 $host =~ s/\s+$//;
4870 if ($typemap{$type} ne 'TXT') {
4871 # Leading or trailng spaces could be legit in TXT records.
4872 $val =~ s/^\s+//;
4873 $val =~ s/\s+$//;
4874 }
4875
4876 _printrec_tiny(*ZONECACHE, 'n', \%recflags,
4877 $dom, $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp)
4878 if *ZONECACHE;
4879
4880 # in case the zone shrunk, get rid of garbage at the end of the file.
4881 truncate(ZONECACHE, tell(ZONECACHE));
4882
4883 $recflags{$recid} = 1;
4884 } # while ($recsth)
4885 }
4886 # stream from cache, whether freshly created or existing
4887 print $datafile $_ while <ZONECACHE>;
4888 close ZONECACHE;
4889 # mark domain as unmodified
4890 $zonesth->execute($domid);
4891 } # while ($domsth)
4892
4893 my $revsth = $dbh->prepare("SELECT rdns_id,revnet,status,changed FROM revzones WHERE status=1 ".
4894 "ORDER BY masklen(revnet) DESC");
4895
4896# For reasons unknown, we can't sanely UNION these statements. Feh.
4897# Supposedly it should work though (note last 3 lines):
4898## PG manual
4899#UNION Clause
4900#
4901#The UNION clause has this general form:
4902#
4903# select_statement UNION [ ALL ] select_statement
4904#
4905#select_statement is any SELECT statement without an ORDER BY, LIMIT, FOR UPDATE, or FOR SHARE clause. (ORDER BY
4906#and LIMIT can be attached to a subexpression if it is enclosed in parentheses. Without parentheses, these
4907#clauses will be taken to apply to the result of the UNION, not to its right-hand input expression.)
4908 my $soasth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
4909 "FROM records WHERE rdns_id=? AND type=6");
4910 $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
4911 "FROM records WHERE rdns_id=? AND not type=6 ".
4912 "ORDER BY masklen(CAST(val AS inet)) DESC, CAST(val AS inet)");
4913 $zonesth = $dbh->prepare("UPDATE revzones SET changed='n' WHERE rdns_id=?");
4914 $revsth->execute();
4915 while (my ($revid,$revzone,$revstat,$changed) = $revsth->fetchrow_array) {
4916##fixme: need to find a way to block opening symlinked files without introducing a race.
4917# O_NOFOLLOW
4918# If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was
4919# added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will
4920# still be followed.
4921# but that doesn't help other platforms. :/
4922 my $tmpzone = NetAddr::IP->new($revzone);
4923 sysopen(ZONECACHE, "$config{exportcache}/".$tmpzone->network->addr, O_RDWR|O_CREAT);
4924 flock(ZONECACHE, LOCK_EX);
4925 if ($changed || -s "$config{exportcache}/".$tmpzone->network->addr == 0) {
4926 # need to fetch this separately since the rest of the records all (should) have real IPs in val
4927 $soasth->execute($revid);
4928 my (@zsoa) = $soasth->fetchrow_array();
4929 _printrec_tiny(*ZONECACHE,'y',\%recflags,$revzone,
4930 $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],'');
4931
4932 $recsth->execute($revid);
4933 while (my ($host,$type,$val,$dist,$weight,$port,$ttl,$recid,$loc) = $recsth->fetchrow_array) {
4934 next if $recflags{$recid};
4935
4936 $loc = '' if !$loc; # de-nullify - just in case
4937##fixme: handle case of record-with-location-that-doesn't-exist better.
4938# note this currently fails safe (tested) - records with a location that
4939# doesn't exist will not be sent to any client
4940# $loc = '' if !$lochash->{$loc};
4941
4942##fixme: record validity timestamp. tinydns supports fiddling with timestamps.
4943# note $ttl must be set to 0 if we want to use tinydns's auto-expiring timestamps.
4944# timestamps are TAI64
4945# ~~ 2^62 + time()
4946 my $stamp = '';
4947
4948 # support tinydns' auto-TTL
4949 $ttl = '' if $ttl == '0';
4950
4951 _printrec_tiny(*ZONECACHE, 'y', \%recflags, $revzone,
4952 $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp)
4953 if *ZONECACHE;
4954
4955 # in case the zone shrunk, get rid of garbage at the end of the file.
4956 truncate(ZONECACHE, tell(ZONECACHE));
4957
4958 $recflags{$recid} = 1;
4959 } # while ($recsth)
4960 }
4961 # stream from cache, whether freshly created or existing
4962 print $datafile $_ while <ZONECACHE>;
4963 close ZONECACHE;
4964 # mark zone as unmodified
4965 $zonesth->execute($revid);
4966 } # while ($domsth)
4967
4968} # end __export_tiny()
4969
4970
4971# Utility sub for __export_tiny above
4972sub _printrec_tiny {
4973 my ($datafile,$revrec,$recflags,$zone,$host,$type,$val,$dist,$weight,$port,$ttl,$loc,$stamp) = @_;
4974
4975 ## Convert a bare number into an octal-coded pair of octets.
4976 # Take optional arg to indicate a decimal or hex input. Defaults to hex.
4977 sub octalize {
4978 my $tmp = shift;
4979 my $srctype = shift || 'h'; # default assumes hex string
4980 $tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
4981 $tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
4982 my @o = ($tmp =~ /^(..)(..)$/); # split into octets
4983 return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
4984 }
4985
4986## WARNING: This works to export even the whole Internet's worth of IP space...
4987## if you have the disk/RAM to handle the dataset, and you call this sub based on /16-sized chunks
4988## A /16 took ~3 seconds with a handful of separate records; adding a /8 pushed export time out to ~13m:40s
4989## 0/0 is estimated to take ~54 hours and ~256G of disk
4990## RAM usage depends on how many non-template entries you have in the set.
4991## This should probably be done on record addition rather than export; large blocks may need to be done in a
4992## forked process
4993 sub __publish_subnet {
4994 my $sub = shift;
4995 my $recflags = shift;
4996 my $hpat = shift;
4997 my $fh = shift;
4998 my $ttl = shift;
4999 my $stamp = shift;
5000 my $loc = shift;
5001 my $ptronly = shift || 0;
5002
5003 my $iplist = $sub->splitref(32);
5004 foreach (@$iplist) {
5005 my $ip = $_->addr;
5006 # make as if we split the non-octet-aligned block into octet-aligned blocks as with SOA
5007 next if $ip =~ /\.(0|255)$/;
5008 next if $$recflags{$ip};
5009 $$recflags{$ip}++;
5010 next if $hpat eq '%blank%'; # Allows blanking a subnet so no records are published.
5011 my $rec = $hpat; # start fresh with the template for each IP
5012 _template4_expand(\$rec, $ip);
5013 print $fh ($ptronly ? "^"._ZONE($_, 'ZONE.in-addr.arpa', 'r', '.').":$rec" : "=$rec:$ip").
5014 ":$ttl:$stamp:$loc\n";
5015 }
5016 }
5017
5018##fixme? append . to all host/val hostnames
5019 if ($typemap{$type} eq 'SOA') {
5020
5021 # host contains pri-ns:responsible
5022 # val is abused to contain refresh:retry:expire:minttl
5023##fixme: "manual" serial vs tinydns-autoserial
5024 # let's be explicit about abusing $host and $val
5025 my ($email, $primary) = (split /:/, $host)[0,1];
5026 my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3];
5027 if ($revrec eq 'y') {
5028##fixme: have to publish SOA records for each v4 /24 in sub-/16, and each /16 in sub-/8
5029# what about v6?
5030# -> only need SOA for local chunks offset from reverse delegation boundaries, so v6 is fine
5031 $zone = NetAddr::IP->new($zone);
5032 # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones
5033 if (!$zone->{isv6} && ($zone->masklen < 24) && ($zone->masklen % 8 != 0)) {
5034 foreach my $szone ($zone->split($zone->masklen + (8 - $zone->masklen % 8))) {
5035 $szone = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.');
5036 print $datafile "Z$szone:$primary:$email"."::$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n";
5037 }
5038 return; # skips "default" bits just below
5039 }
5040 $zone = _ZONE($zone, 'ZONE', 'r', '.').($zone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
5041 }
5042 print $datafile "Z$zone:$primary:$email"."::$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n";
5043
5044 } elsif ($typemap{$type} eq 'A') {
5045
5046 print $datafile "+$host:$val:$ttl:$stamp:$loc\n";
5047
5048 } elsif ($typemap{$type} eq 'NS') {
5049
5050 if ($revrec eq 'y') {
5051 $val = NetAddr::IP->new($val);
5052 # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones
5053 if (!$val->{isv6} && ($val->masklen < 24) && ($val->masklen % 8 != 0)) {
5054 foreach my $szone ($val->split($val->masklen + (8 - $val->masklen % 8))) {
5055 my $szone2 = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.');
5056 next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen;
5057 print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n";
5058 $$recflags{$szone2} = $val->masklen;
5059 }
5060 } elsif ($val->{isv6} && ($val->masklen < 64) && ($val->masklen % 4 !=0)) {
5061 foreach my $szone ($val->split($val->masklen + (4 - $val->masklen % 4))) {
5062 my $szone2 = _ZONE($szone, 'ZONE.ip6.arpa', 'r', '.');
5063 next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen;
5064 print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n";
5065 $$recflags{$szone2} = $val->masklen;
5066 }
5067 } else {
5068 my $val2 = _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
5069 print $datafile "\&$val2"."::$host:$ttl:$stamp:$loc\n";
5070 $$recflags{$val2} = $val->masklen;
5071 }
5072 } else {
5073 print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n";
5074 }
5075
5076 } elsif ($typemap{$type} eq 'AAAA') {
5077
5078 print $datafile ":$host:28:";
5079 my $altgrp = 0;
5080 my @altconv;
5081 # Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing)
5082 foreach (split /:/, $val) {
5083 if (/^$/) {
5084 # flag blank entry; this is a series of 0's of (currently) unknown length
5085 $altconv[$altgrp++] = 's';
5086 } else {
5087 # call sub to convert 1-4 hex digits to 2 string-rep octal bytes
5088 $altconv[$altgrp++] = octalize($_)
5089 }
5090 }
5091 foreach my $octet (@altconv) {
5092 # if not 's', output
5093 print $datafile $octet unless $octet =~ /^s$/;
5094 # if 's', output (9-array length)x literal '\000\000'
5095 print $datafile '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
5096 }
5097 print $datafile ":$ttl:$stamp:$loc\n";
5098
5099 } elsif ($typemap{$type} eq 'MX') {
5100
5101 print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n";
5102
5103 } elsif ($typemap{$type} eq 'TXT') {
5104
5105##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
5106 if ($revrec eq 'n') {
5107 $val =~ s/:/\\072/g; # may need to replace other symbols
5108 print $datafile "'$host:$val:$ttl:$stamp:$loc\n";
5109 } else {
5110 $host =~ s/:/\\072/g; # may need to replace other symbols
5111 my $val2 = NetAddr::IP->new($val);
5112 print $datafile "'"._ZONE($val2, 'ZONE', 'r', '.').($val2->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5113 ":$host:$ttl:$stamp:$loc\n";
5114 }
5115
5116# by-hand TXT
5117#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
5118#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
5119#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
5120
5121#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
5122#:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600
5123
5124# very long TXT record as brought in by axfr-get
5125# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
5126# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
5127#:longtxt.deepnet.cx:16:
5128#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
5129#\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
5130#\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long.
5131#:3600
5132
5133 } elsif ($typemap{$type} eq 'CNAME') {
5134
5135 if ($revrec eq 'n') {
5136 print $datafile "C$host:$val:$ttl:$stamp:$loc\n";
5137 } else {
5138 my $val2 = NetAddr::IP->new($val);
5139 print $datafile "C"._ZONE($val2, 'ZONE', 'r', '.').($val2->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5140 ":$host:$ttl:$stamp:$loc\n";
5141 }
5142
5143 } elsif ($typemap{$type} eq 'SRV') {
5144
5145 # data is two-byte values for priority, weight, port, in that order,
5146 # followed by length/string data
5147
5148 print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d');
5149
5150 $val .= '.' if $val !~ /\.$/;
5151 foreach (split /\./, $val) {
5152 printf $datafile "\\%0.3o%s", length($_), $_;
5153 }
5154 print $datafile "\\000:$ttl:$stamp:$loc\n";
5155
5156 } elsif ($typemap{$type} eq 'RP') {
5157
5158 # RP consists of two mostly free-form strings.
5159 # The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
5160 # The second is the "hostname" of a TXT record with more info.
5161 print $datafile ":$host:17:";
5162 my ($who,$what) = split /\s/, $val;
5163 foreach (split /\./, $who) {
5164 printf $datafile "\\%0.3o%s", length($_), $_;
5165 }
5166 print $datafile '\000';
5167 foreach (split /\./, $what) {
5168 printf $datafile "\\%0.3o%s", length($_), $_;
5169 }
5170 print $datafile "\\000:$ttl:$stamp:$loc\n";
5171
5172 } elsif ($typemap{$type} eq 'PTR') {
5173
5174 $zone = NetAddr::IP->new($zone);
5175 $$recflags{$val}++;
5176 if (!$zone->{isv6} && $zone->masklen > 24) {
5177 ($val) = ($val =~ /\.(\d+)$/);
5178 print $datafile "^$val."._ZONE($zone, 'ZONE', 'r', '.').'.in-addr.arpa'.
5179 ":$host:ttl:$stamp:$loc\n";
5180 } else {
5181 $val = NetAddr::IP->new($val);
5182 print $datafile "^".
5183 _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5184 ":$host:$ttl:$stamp:$loc\n";
5185 }
5186
5187 } elsif ($type == 65280) { # A+PTR
5188
5189 $$recflags{$val}++;
5190 print $datafile "=$host:$val:$ttl:$stamp:$loc\n";
5191
5192 } elsif ($type == 65281) { # AAAA+PTR
5193
5194#$$recflags{$val}++;
5195 # treat these as two separate records. since tinydns doesn't have
5196 # a native combined type, we have to create them separately anyway.
5197 if ($revrec eq 'n') {
5198 $type = 28;
5199 } else {
5200 $type = 12;
5201 }
5202 _printrec_tiny($datafile,$revrec,$recflags,$zone,$host,$type,$val,$dist,$weight,$port,$ttl,$loc,$stamp);
5203##fixme: add a config flag to indicate use of the patch from http://www.fefe.de/dns/
5204# type 6 is for AAAA+PTR, type 3 is for AAAA
5205
5206 } elsif ($type == 65282) { # PTR template
5207
5208 # only useful for v4 with standard DNS software, since this expands all
5209 # IPs in $zone (or possibly $val?) with autogenerated records
5210 $val = NetAddr::IP->new($val);
5211 return if $val->{isv6};
5212
5213 if ($val->masklen <= 16) {
5214 foreach my $sub ($val->split(16)) {
5215 __publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, 1);
5216 }
5217 } else {
5218 __publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, 1);
5219 }
5220
5221 } elsif ($type == 65283) { # A+PTR template
5222
5223 $val = NetAddr::IP->new($val);
5224 # Just In Case. An A+PTR should be impossible to add to a v6 revzone via API.
5225 return if $val->{isv6};
5226
5227 if ($val->masklen <= 16) {
5228 foreach my $sub ($val->split(16)) {
5229 __publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, 0);
5230 }
5231 } else {
5232 __publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, 0);
5233 }
5234
5235 } elsif ($type == 65284) { # AAAA+PTR template
5236 # Stub for completeness. Could be exported to DNS software that supports
5237 # some degree of internal automagic in generic-record-creation
5238 # (eg http://search.cpan.org/dist/AllKnowingDNS/ )
5239
5240 } elsif ($type == 65285) { # Delegation
5241 # This is intended for reverse zones, but may prove useful in forward zones.
5242
5243 # All delegations need to create one or more NS records. The NS record handler knows what to do.
5244 _printrec_tiny($datafile,$revrec,$recflags,$zone,$host,$reverse_typemap{'NS'},
5245 $val,$dist,$weight,$port,$ttl,$loc,$stamp);
5246 if ($revrec eq 'y') {
5247 # In the case of a sub-/24 v4 reverse delegation, we need to generate CNAMEs
5248 # to redirect all of the individual IP lookups as well.
5249 # Not sure how this would actually resolve if a /24 or larger was delegated
5250 # one way, and a sub-/24 in that >=/24 was delegated elsewhere...
5251 my $dblock = NetAddr::IP->new($val);
5252 if (!$dblock->{isv6} && $dblock->masklen > 24) {
5253 my @subs = $dblock->split;
5254 foreach (@subs) {
5255 next if $$recflags{"$_"};
5256 my ($oct) = ($_->addr =~ /(\d+)$/);
5257 print $datafile "C"._ZONE($_, 'ZONE.in-addr.arpa', 'r', '.').":$oct.".
5258 _ZONE($dblock, 'ZONE.in-addr.arpa', 'r', '.').":$ttl:$stamp:$loc\n";
5259 $$recflags{"$_"}++;
5260 }
5261 }
5262 }
5263
5264##
5265## Uncommon types. These will need better UI support Any Day Sometime Maybe(TM).
5266##
5267
5268 } elsif ($type == 44) { # SSHFP
5269 my ($algo,$fpt,$fp) = split /\s+/, $val;
5270
5271 my $rec = sprintf ":$host:44:\\%0.3o\\%0.3o", $algo, $fpt;
5272 while (my ($byte) = ($fp =~ /^(..)/) ) {
5273 $rec .= sprintf "\\%0.3o", hex($byte);
5274 $fp =~ s/^..//;
5275 }
5276 print $datafile "$rec:$ttl:$stamp:$loc\n";
5277
5278 } else {
5279 # raw record. we don't know what's in here, so we ASS-U-ME the user has
5280 # put it in correctly, since either the user is messing directly with the
5281 # database, or the record was imported via AXFR
5282 # <split by char>
5283 # convert anything not a-zA-Z0-9.- to octal coding
5284
5285##fixme: add flag to export "unknown" record types - note we'll probably end up
5286# mangling them since they were written to the DB from Net::DNS::RR::<type>->rdatastr.
5287 #print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n";
5288
5289 } # record type if-else
5290
5291} # end _printrec_tiny()
5292
5293
5294## DNSDB::mailNotify()
5295# Sends notification mail to recipients regarding a DNSDB operation
5296sub mailNotify {
5297 my $self = shift;
5298 my $dbh = $self->{dbh};
5299 my ($subj,$message) = @_;
5300
5301 return if $config{mailhost} eq 'smtp.example.com'; # do nothing if still using default SMTP host.
5302
5303 my $mailer = Net::SMTP->new($config{mailhost}, Hello => "dnsadmin.$config{domain}");
5304
5305 my $mailsender = ($config{mailsender} ? $config{mailsender} : $config{mailnotify});
5306
5307 $mailer->mail($mailsender);
5308 $mailer->to($config{mailnotify});
5309 $mailer->data("From: \"$config{mailname}\" <$mailsender>\n",
5310 "To: <$config{mailnotify}>\n",
5311 "Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n",
5312 "Subject: $subj\n",
5313 "X-Mailer: DNSAdmin Notify v".sprintf("%.1d",$DNSDB::VERSION)."\n",
5314 "Organization: $config{orgname}\n",
5315 "\n$message\n");
5316 $mailer->quit;
5317}
5318
5319# shut Perl up
53201;
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