source: trunk/DNSDB.pm@ 600

Last change on this file since 600 was 600, checked in by Kris Deugau, 11 years ago

/trunk

Allow wildcard records through the hostname form checking
  • Property svn:keywords set to Date Rev Author Id
File size: 209.4 KB
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1# dns/trunk/DNSDB.pm
2# Abstraction functions for DNS administration
3##
4# $Id: DNSDB.pm 600 2014-03-25 18:57:58Z 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 Digest::MD5 qw(md5_hex);
30use Net::SMTP;
31use NetAddr::IP 4.027 qw(:lower);
32use POSIX;
33use Fcntl qw(:flock);
34use Time::TAI64 qw(:tai64);
35
36use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
37
38$VERSION = 1.3; ##VERSION##
39@ISA = qw(Exporter);
40@EXPORT_OK = qw(
41 &initGlobals &login &initActionLog
42 &getPermissions &changePermissions &comparePermissions
43 &changeGroup
44 &connectDB &finish
45 &addDomain &delZone &domainName &revName &domainID &revID &addRDNS
46 &getZoneCount &getZoneList &getZoneLocation
47 &addGroup &delGroup &getChildren &groupName
48 &getGroupCount &getGroupList
49 &addUser &updateUser &delUser &userFullName &userStatus &getUserData
50 &getUserCount &getUserList &getUserDropdown
51 &addLoc &updateLoc &delLoc &getLoc
52 &getLocCount &getLocList &getLocDropdown
53 &getSOA &updateSOA &getRecLine &getRecList &getRecCount
54 &addRec &updateRec &delRec
55 &getLogCount &getLogEntries
56 &getRevPattern
57 &getTypelist
58 &parentID
59 &isParent
60 &zoneStatus &getZonesByCIDR &importAXFR
61 &export
62 &mailNotify
63 %typemap %reverse_typemap
64 @permtypes $permlist %permchains
65 );
66
67@EXPORT = qw(%typemap %reverse_typemap @permtypes $permlist %permchains);
68%EXPORT_TAGS = ( ALL => [qw(
69 &initGlobals &login &initActionLog
70 &getPermissions &changePermissions &comparePermissions
71 &changeGroup
72 &connectDB &finish
73 &addDomain &delZone &domainName &revName &domainID &revID &addRDNS
74 &getZoneCount &getZoneList &getZoneLocation
75 &addGroup &delGroup &getChildren &groupName
76 &getGroupCount &getGroupList
77 &addUser &updateUser &delUser &userFullName &userStatus &getUserData
78 &getUserCount &getUserList &getUserDropdown
79 &addLoc &updateLoc &delLoc &getLoc
80 &getLocCount &getLocList &getLocDropdown
81 &getSOA &updateSOA &getRecLine &getRecList &getRecCount
82 &addRec &updateRec &delRec
83 &getLogCount &getLogEntries
84 &getRevPattern
85 &getTypelist
86 &parentID
87 &isParent
88 &zoneStatus &getZonesByCIDR &importAXFR
89 &export
90 &mailNotify
91 %typemap %reverse_typemap
92 @permtypes $permlist %permchains
93 )]
94 );
95
96our $errstr = '';
97our $resultstr = '';
98
99# Arguably defined wholly in the db, but little reason to change without supporting code changes
100# group_view, user_view permissions? separate rDNS permission(s)?
101our @permtypes = qw (
102 group_edit group_create group_delete
103 user_edit user_create user_delete
104 domain_edit domain_create domain_delete
105 record_edit record_create record_delete record_locchg
106 location_edit location_create location_delete location_view
107 self_edit admin
108);
109our $permlist = join(',',@permtypes);
110
111# Some permissions more or less require certain others.
112our %permchains = (
113 user_edit => 'self_edit',
114 location_edit => 'location_view',
115 location_create => 'location_view',
116 location_delete => 'location_view',
117 record_locchg => 'location_view',
118);
119
120# DNS record type map and reverse map.
121# loaded from the database, from http://www.iana.org/assignments/dns-parameters
122our %typemap;
123our %reverse_typemap;
124
125## (Semi)private variables
126
127# Hash of functions for validating record types. Filled in initGlobals() since
128# it relies on visibility flags from the rectypes table in the DB
129my %validators;
130
131# Entity-relationship reference hashes.
132my %par_tbl = (
133 group => 'groups',
134 user => 'users',
135 defrec => 'default_records',
136 defrevrec => 'default_rev_records',
137 domain => 'domains',
138 revzone => 'revzones',
139 record => 'records'
140 );
141my %id_col = (
142 group => 'group_id',
143 user => 'user_id',
144 defrec => 'record_id',
145 defrevrec => 'record_id',
146 domain => 'domain_id',
147 revzone => 'rdns_id',
148 record => 'record_id'
149 );
150my %par_col = (
151 group => 'parent_group_id',
152 user => 'group_id',
153 defrec => 'group_id',
154 defrevrec => 'group_id',
155 domain => 'group_id',
156 revzone => 'group_id',
157 record => 'domain_id'
158 );
159my %par_type = (
160 group => 'group',
161 user => 'group',
162 defrec => 'group',
163 defrevrec => 'group',
164 domain => 'group',
165 revzone => 'group',
166 record => 'domain'
167 );
168
169##
170## Constructor and destructor
171##
172
173sub new {
174 my $this = shift;
175 my $class = ref($this) || $this;
176 my %args = @_;
177
178 # Prepopulate a basic config. Note some of these *will* cause errors if left unset.
179 # note: add appropriate stanzas in __cfgload() to parse these
180 my %defconfig = (
181 # The only configuration options not loadable from a config file.
182 configfile => "/etc/dnsdb/dnsdb.conf", ##CFG_LEAF##
183
184 # Database connection info
185 dbname => 'dnsdb',
186 dbuser => 'dnsdb',
187 dbpass => 'secret',
188 dbhost => '',
189
190 # Email notice settings
191 mailhost => 'smtp.example.com',
192 mailnotify => 'dnsdb@example.com', # to
193 mailsender => 'dnsdb@example.com', # from
194 mailname => 'DNS Administration',
195 orgname => 'Example Corp',
196 domain => 'example.com',
197
198 # Template directory
199 templatedir => 'templates/',
200# fmeh. this is a real web path, not a logical internal one. hm..
201# cssdir => 'templates/',
202 sessiondir => 'session/',
203 exportcache => 'cache/',
204 usecache => 1, # do we bother using the cache above?
205
206 # Session params
207 timeout => '1h', # passed as-is to CGI::Session
208
209 # Other miscellanea
210 log_failures => 1, # log all evarthing by default
211 perpage => 15,
212 maxfcgi => 10, # reasonable default?
213 force_refresh => 1,
214 lowercase => 0, # mangle as little as possible by default
215 # show IPs and CIDR blocks as-is for reverse zones. valid values are
216 # 'none' (default, show natural IP or CIDR)
217 # 'zone' (zone name, wherever used)
218 # 'record' (IP or CIDR values in reverse record lists)
219 # 'all' (all IP values in any reverse zone view)
220 showrev_arpa => 'none',
221 );
222
223 # Config file parse calls.
224 # If we are passed a blank argument for $args{configfile},
225 # we should NOT parse the default config file - we will
226 # rely on hardcoded defaults OR caller-specified values.
227 # If we are passed a non-blank argument, parse that file.
228 # If no config file is specified, parse the default one.
229 my %siteconfig;
230 if (defined($args{configfile})) {
231 if ($args{configfile}) {
232 return if !__cfgload($args{configfile}, \%siteconfig);
233 }
234 } else {
235 return if !__cfgload($defconfig{configfile}, \%siteconfig);
236 }
237
238 # Assemble the object. Apply configuration hashes in order of precedence.
239 my $self = {
240 # Hardcoded defaults
241 %defconfig,
242 # Default config file OR caller-specified one, loaded above
243 %siteconfig,
244 # Caller-specified arguments
245 %args
246 };
247 bless $self, $class;
248
249 # Several settings are booleans. Handle multiple possible ways of setting them.
250 for my $boolopt ('log_failures', 'force_refresh', 'lowercase', 'usecache') {
251 if ($self->{$boolopt} ne '1' && $self->{$boolopt} ne '0') {
252 # true/false, on/off, yes/no all valid.
253 if ($self->{$boolopt} =~ /^(?:true|false|t|f|on|off|yes|no)$/) {
254 if ($self->{$boolopt} =~ /(?:true|t|on|yes)/) {
255 $self->{$boolopt} = 1;
256 } else {
257 $self->{$boolopt} = 0;
258 }
259 } else {
260 warn "Bad $boolopt setting $self->{$boolopt}, using default\n";
261 $self->{$boolopt} = $defconfig{$boolopt};
262 }
263 }
264 }
265
266 # Enum-ish option(s)
267 if (!grep /$self->{showrev_arpa}/, ('none','zone','record','all')) {
268 warn "Bad showrev_arpa setting $self->{showrev_arpa}, using default\n";
269 $self->{showrev_arpa} = 'none';
270 }
271
272 # Try to connect to the DB, and initialize a number of handy globals.
273 $self->{dbh} = connectDB($self->{dbname}, $self->{dbuser}, $self->{dbpass}, $self->{dbhost}) or return;
274 $self->initGlobals();
275
276 return $self;
277}
278
279sub DESTROY {
280 my $self = shift;
281 $self->{dbh}->disconnect if $self->{dbh};
282}
283
284sub errstr { $DNSDB::errstr; }
285
286##
287## utility functions
288##
289
290## DNSDB::_rectable()
291# Takes default+rdns flags, returns appropriate table name
292sub _rectable {
293 my $def = shift;
294 my $rev = shift;
295
296 return 'records' if $def ne 'y';
297 return 'default_records' if $rev ne 'y';
298 return 'default_rev_records';
299} # end _rectable()
300
301## DNSDB::_recparent()
302# Takes default+rdns flags, returns appropriate parent-id column name
303sub _recparent {
304 my $def = shift;
305 my $rev = shift;
306
307 return 'group_id' if $def eq 'y';
308 return 'rdns_id' if $rev eq 'y';
309 return 'domain_id';
310} # end _recparent()
311
312## DNSDB::_ipparent()
313# Check an IP to be added in a reverse zone to see if it's really in the requested parent.
314# Takes default and reverse flags, IP (fragment) to check, parent zone ID,
315# and a reference to a NetAddr::IP object (also used to pass back a fully-reconstructed IP for
316# database insertion)
317sub _ipparent {
318 my $self = shift;
319 my $dbh = $self->{dbh};
320 my $defrec = shift;
321 my $revrec = shift;
322 my $val = shift;
323 my $id = shift;
324 my $addr = shift;
325
326 return if $revrec ne 'y'; # this sub not useful in forward zones
327
328 $$addr = NetAddr::IP->new($$val); #necessary?
329
330 # subsub to split, reverse, and overlay an IP fragment on a netblock
331 sub __rev_overlay {
332 my $splitme = shift; # ':' or '.', m'lud?
333 my $parnet = shift;
334 my $val = shift;
335 my $addr = shift;
336
337 my $joinme = $splitme;
338 $splitme = '\.' if $splitme eq '.';
339 my @working = reverse(split($splitme, $parnet->addr));
340 my @parts = reverse(split($splitme, $$val));
341 for (my $i = 0; $i <= $#parts; $i++) {
342 $working[$i] = $parts[$i];
343 }
344 my $checkme = NetAddr::IP->new(join($joinme, reverse(@working))) or return 0;
345 return 0 unless $checkme->within($parnet);
346 $$addr = $checkme; # force "correct" IP to be recorded.
347 return 1;
348 }
349
350 my ($parstr) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id = ?", undef, ($id));
351 my $parnet = NetAddr::IP->new($parstr);
352
353 # Fail early on v6-in-v4 or v4-in-v6. We're not accepting these ATM.
354 return 0 if $parnet->addr =~ /\./ && $$val =~ /:/;
355 return 0 if $parnet->addr =~ /:/ && $$val =~ /\./;
356
357 if ($$addr && ($$val =~ /^[\da-fA-F][\da-fA-F:]+[\da-fA-F]$/ || $$val =~ m|/\d+$|)) {
358 # the only case where NetAddr::IP's acceptance of legitimate IPs is "correct" is for a proper IPv6 address,
359 # or a netblock (only expected on templates)
360 # the rest we have to restructure before fiddling. *sigh*
361 return 1 if $$addr->within($parnet);
362 } else {
363 # We don't have a complete IP in $$val (yet)... unless we have a netblock
364 if ($parnet->addr =~ /:/) {
365 $$val =~ s/^:+//; # gotta strip'em all...
366 return __rev_overlay(':', $parnet, $val, $addr);
367 }
368 if ($parnet->addr =~ /\./) {
369 $$val =~ s/^\.+//;
370 return __rev_overlay('.', $parnet, $val, $addr);
371 }
372 # should be impossible to get here...
373 }
374 # ... and here.
375 # can't do nuttin' in forward zones
376} # end _ipparent()
377
378## DNSDB::_hostparent()
379# A little different than _ipparent above; this tries to *find* the parent zone of a hostname
380# Takes a hostname.
381# Returns the domain ID of the parent domain if one was found.
382sub _hostparent {
383 my $self = shift;
384 my $dbh = $self->{dbh};
385 my $hname = shift;
386
387 $hname =~ s/^\*\.//; # this should be impossible to find in the domains table.
388 my @hostbits = split /\./, $hname;
389 my $sth = $dbh->prepare("SELECT count(*),domain_id FROM domains WHERE lower(domain) = lower(?) GROUP BY domain_id");
390 foreach (@hostbits) {
391 $sth->execute($hname);
392 my ($found, $parid) = $sth->fetchrow_array;
393 if ($found) {
394 return $parid;
395 }
396 $hname =~ s/^$_\.//;
397 }
398} # end _hostparent()
399
400## DNSDB::_log()
401# Log an action
402# Takes a log entry hash containing at least:
403# group_id, log entry
404# and optionally one or more of:
405# domain_id, rdns_id
406# The %userdata hash provides the user ID, username, and fullname
407sub _log {
408 my $self = shift;
409 my $dbh = $self->{dbh};
410
411 my %args = @_;
412
413 $args{rdns_id} = 0 if !$args{rdns_id};
414 $args{domain_id} = 0 if !$args{domain_id};
415
416##fixme: farm out the actual logging to different subs for file, syslog, internal, etc based on config
417# if ($self->{log_channel} eq 'sql') {
418 $dbh->do("INSERT INTO log (domain_id,rdns_id,group_id,entry,user_id,email,name) VALUES (?,?,?,?,?,?,?)",
419 undef,
420 ($args{domain_id}, $args{rdns_id}, $args{group_id}, $args{entry},
421 $self->{loguserid}, $self->{logusername}, $self->{logfullname}) );
422# } elsif ($self->{log_channel} eq 'file') {
423# } elsif ($self->{log_channel} eq 'syslog') {
424# }
425} # end _log
426
427
428##
429## Record validation subs.
430##
431
432## All of these subs take substantially the same arguments:
433# a hash containing at least the following keys:
434# - defrec (default/live flag)
435# - revrec (forward/reverse flag)
436# - id (parent entity ID)
437# - host (hostname)
438# - rectype
439# - val (IP, hostname [CNAME/MX/SRV] or text)
440# - addr (NetAddr::IP object from val. May be undef.)
441# MX and SRV record validation also expect distance, and SRV records expect weight and port as well.
442# host, rectype, and addr should be references as these may be modified in validation
443
444# A record
445sub _validate_1 {
446 my $self = shift;
447 my $dbh = $self->{dbh};
448
449 my %args = @_;
450
451 return ('FAIL', 'Reverse zones cannot contain A records') if $args{revrec} eq 'y';
452
453 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
454 # or the intended parent domain for live records.
455 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
456 ${$args{host}} =~ s/\.*$/\.$pname/ if (${$args{host}} ne '@' && ${$args{host}} !~ /$pname$/);
457
458 # Check IP is well-formed, and that it's a v4 address
459 # Fail on "compact" IPv4 variants, because they are not consistent and predictable.
460 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
461 unless ${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/;
462 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
463 unless $args{addr} && !$args{addr}->{isv6};
464 # coerce IP/value to normalized form for storage
465 ${$args{val}} = $args{addr}->addr;
466
467 return ('OK','OK');
468} # done A record
469
470# NS record
471sub _validate_2 {
472 my $self = shift;
473 my $dbh = $self->{dbh};
474
475 my %args = @_;
476
477 # Check that the target of the record is within the parent.
478 # Yes, host<->val are mixed up here; can't see a way to avoid it. :(
479 if ($args{defrec} eq 'n') {
480 # Check if IP/address/zone/"subzone" is within the parent
481 if ($args{revrec} eq 'y') {
482 my $tmpip = NetAddr::IP->new(${$args{val}});
483 my $pname = $self->revName($args{id});
484 return ('FAIL',"${$args{val}} not within $pname")
485 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$tmpip);
486 # Sub the returned thing for ZONE? This could get stupid if you have typos...
487 ${$args{val}} =~ s/ZONE/$tmpip->address/;
488 } else {
489 my $pname = $self->domainName($args{id});
490 ${$args{host}} = $pname if ${$args{host}} !~ /\.$pname$/;
491 }
492 } else {
493 # Default reverse NS records should always refer to the implied parent
494 ${$args{host}} = 'DOMAIN' if $args{revrec} eq 'n';
495 ${$args{val}} = 'ZONE' if $args{revrec} eq 'y';
496 }
497
498# Let this lie for now. Needs more magic.
499# # Check IP is well-formed, and that it's a v4 address
500# return ('FAIL',"A record must be a valid IPv4 address")
501# unless $addr && !$addr->{isv6};
502# # coerce IP/value to normalized form for storage
503# $$val = $addr->addr;
504
505 return ('OK','OK');
506} # done NS record
507
508# CNAME record
509sub _validate_5 {
510 my $self = shift;
511 my $dbh = $self->{dbh};
512
513 my %args = @_;
514
515# Not really true, but these are only useful for delegating smaller-than-/24 IP blocks.
516# This is fundamentally a messy operation and should really just be taken care of by the
517# export process, not manual maintenance of the necessary records.
518 return ('FAIL', 'Reverse zones cannot contain CNAME records') if $args{revrec} eq 'y';
519
520 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
521 # or the intended parent domain for live records.
522 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
523 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
524
525 return ('OK','OK');
526} # done CNAME record
527
528# SOA record
529sub _validate_6 {
530 # Smart monkeys won't stick their fingers in here; we have
531 # separate dedicated routines to deal with SOA records.
532 return ('OK','OK');
533} # done SOA record
534
535# PTR record
536sub _validate_12 {
537 my $self = shift;
538 my $dbh = $self->{dbh};
539
540 my %args = @_;
541
542 if ($args{revrec} eq 'y') {
543 if ($args{defrec} eq 'n') {
544 return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".$self->revName($args{id}))
545 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
546 ${$args{val}} = $args{addr}->addr;
547 } else {
548 if (${$args{val}} =~ /\./) {
549 # looks like a v4 or fragment
550 if (${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/) {
551 # woo! a complete IP! validate it and normalize, or fail.
552 $args{addr} = NetAddr::IP->new(${$args{val}})
553 or return ('FAIL', "IP/value looks like IPv4 but isn't valid");
554 ${$args{val}} = $args{addr}->addr;
555 } else {
556 ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/;
557 }
558 } elsif (${$args{val}} =~ /[a-f:]/) {
559 # looks like a v6 or fragment
560 ${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/;
561 if ($args{addr}) {
562 if ($args{addr}->addr =~ /^0/) {
563 ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/;
564 } else {
565 ${$args{val}} = $args{addr}->addr;
566 }
567 }
568 } else {
569 # bare number (probably). These could be v4 or v6, so we'll
570 # expand on these on creation of a reverse zone.
571 ${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/;
572 }
573 ${$args{host}} =~ s/\.*$/\.$self->{domain}/ if ${$args{host}} !~ /(?:$self->{domain}|ADMINDOMAIN)$/;
574 }
575
576# Multiple PTR records do NOT generally do what most people believe they do,
577# and tend to fail in the most awkward way possible. Check and warn.
578# We use $val instead of $addr->addr since we may be in a defrec, and may have eg "ZONE::42" or "ZONE.12"
579
580 my @checkvals = (${$args{val}});
581 if (${$args{val}} =~ /,/) {
582 # push . and :: variants into checkvals if val has ,
583 my $tmp;
584 ($tmp = ${$args{val}}) =~ s/,/./;
585 push @checkvals, $tmp;
586 ($tmp = ${$args{val}}) =~ s/,/::/;
587 push @checkvals, $tmp;
588 }
589 my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ?");
590 foreach my $checkme (@checkvals) {
591 if ($args{update}) {
592 # Record update. There should usually be an existing PTR (the record being updated)
593 my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
594 " WHERE val = ?", undef, ($checkme)) };
595 return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
596 if @ptrs && (!grep /^$args{update}$/, @ptrs);
597 } else {
598 # New record. Always warn if a PTR exists
599 my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
600 " WHERE val = ?", undef, ($checkme));
601 return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
602 if $ptrcount;
603 }
604 }
605
606 } else {
607 # Not absolutely true but only useful if you hack things up for sub-/24 v4 reverse delegations
608 # Simpler to just create the reverse zone and grant access for the customer to edit it, and create direct
609 # PTR records on export
610 return ('FAIL',"Forward zones cannot contain PTR records");
611 }
612
613 return ('OK','OK');
614} # done PTR record
615
616# MX record
617sub _validate_15 {
618 my $self = shift;
619 my $dbh = $self->{dbh};
620
621 my %args = @_;
622
623# Not absolutely true but WTF use is an MX record for a reverse zone?
624 return ('FAIL', 'Reverse zones cannot contain MX records') if $args{revrec} eq 'y';
625
626 return ('FAIL', "Distance is required for MX records") unless defined(${$args{dist}});
627 ${$args{dist}} =~ s/\s*//g;
628 return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
629
630 ${$args{fields}} = "distance,";
631 push @{$args{vallist}}, ${$args{dist}};
632
633 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
634 # or the intended parent domain for live records.
635 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
636 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
637
638# hmm.. this might work. except possibly for something pointing to "deadbeef.ca". <g>
639# if ($type == $reverse_typemap{NS} || $type == $reverse_typemap{MX} || $type == $reverse_typemap{SRV}) {
640# if ($val =~ /^\s*[\da-f:.]+\s*$/) {
641# return ('FAIL',"$val is not a valid IP address") if !$addr;
642# }
643# }
644
645 return ('OK','OK');
646} # done MX record
647
648# TXT record
649sub _validate_16 {
650 my $self = shift;
651
652 my %args = @_;
653
654 if ($args{revrec} eq 'y') {
655 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
656 # or the intended parent domain for live records.
657 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
658 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
659 }
660
661 # Could arguably put a WARN return here on very long (>512) records
662 return ('OK','OK');
663} # done TXT record
664
665# RP record
666sub _validate_17 {
667 # Probably have to validate these some day
668 return ('OK','OK');
669} # done RP record
670
671# AAAA record
672sub _validate_28 {
673 my $self = shift;
674 my $dbh = $self->{dbh};
675
676 my %args = @_;
677
678 return ('FAIL', 'Reverse zones cannot contain AAAA records') if $args{revrec} eq 'y';
679
680 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
681 # or the intended parent domain for live records.
682 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
683 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
684
685 # Check IP is well-formed, and that it's a v6 address
686 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address")
687 unless $args{addr} && $args{addr}->{isv6};
688 # coerce IP/value to normalized form for storage
689 ${$args{val}} = $args{addr}->addr;
690
691 return ('OK','OK');
692} # done AAAA record
693
694# SRV record
695sub _validate_33 {
696 my $self = shift;
697 my $dbh = $self->{dbh};
698
699 my %args = @_;
700
701# Not absolutely true but WTF use is an SRV record for a reverse zone?
702 return ('FAIL', 'Reverse zones cannot contain SRV records') if $args{revrec} eq 'y';
703
704 return ('FAIL', "Distance is required for SRV records") unless defined(${$args{dist}});
705 ${$args{dist}} =~ s/\s*//g;
706 return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
707
708 # Coerce all hostnames to end in ".DOMAIN" for group/default records,
709 # or the intended parent domain for live records.
710 my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : $self->domainName($args{id}));
711 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
712
713 return ('FAIL',"SRV records must begin with _service._protocol [${$args{host}}]")
714 unless ${$args{host}} =~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-zA-Z0-9-]+/;
715 return ('FAIL',"Port and weight are required for SRV records")
716 unless defined(${$args{weight}}) && defined(${$args{port}});
717 ${$args{weight}} =~ s/\s*//g;
718 ${$args{port}} =~ s/\s*//g;
719
720 return ('FAIL',"Port and weight are required, and must be numeric")
721 unless ${$args{weight}} =~ /^\d+$/ && ${$args{port}} =~ /^\d+$/;
722
723 ${$args{fields}} = "distance,weight,port,";
724 push @{$args{vallist}}, (${$args{dist}}, ${$args{weight}}, ${$args{port}});
725
726 return ('OK','OK');
727} # done SRV record
728
729# Now the custom types
730
731# A+PTR record. With a very little bit of magic we can also use this sub to validate AAAA+PTR. Whee!
732sub _validate_65280 {
733 my $self = shift;
734 my $dbh = $self->{dbh};
735
736 my %args = @_;
737
738 my $code = 'OK';
739 my $msg = 'OK';
740
741 if ($args{defrec} eq 'n') {
742 # live record; revrec determines whether we validate the PTR or A component first.
743
744 if ($args{revrec} eq 'y') {
745 ($code,$msg) = $self->_validate_12(%args);
746 return ($code,$msg) if $code eq 'FAIL';
747
748 # check A+PTR is really v4
749 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
750 if ${$args{rectype}} == 65280 && $args{addr}->{isv6};
751 # check AAAA+PTR is really v6
752 return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address")
753 if ${$args{rectype}} == 65281 && !$args{addr}->{isv6};
754
755 # Check if the reqested domain exists. If not, coerce the type down to PTR and warn.
756 if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) {
757 my $addmsg = "Record ".($args{update} ? 'updated' : 'added').
758 " as PTR instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}";
759 $msg .= "\n$addmsg" if $code eq 'WARN';
760 $msg = $addmsg if $code eq 'OK';
761 ${$args{rectype}} = $reverse_typemap{PTR};
762 return ('WARN', $msg);
763 }
764
765 # Add domain ID to field list and values
766 ${$args{fields}} .= "domain_id,";
767 push @{$args{vallist}}, ${$args{domid}};
768
769 } else {
770 ($code,$msg) = $self->_validate_1(%args) if ${$args{rectype}} == 65280;
771 ($code,$msg) = $self->_validate_28(%args) if ${$args{rectype}} == 65281;
772 return ($code,$msg) if $code eq 'FAIL';
773
774 # Check if the requested reverse zone exists - note, an IP fragment won't
775 # work here since we don't *know* which parent to put it in.
776 # ${$args{val}} has been validated as a valid IP by now, in one of the above calls.
777 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?".
778 " ORDER BY masklen(revnet) DESC", undef, (${$args{val}}));
779 if (!$revid) {
780 $msg = "Record ".($args{update} ? 'updated' : 'added')." as ".(${$args{rectype}} == 65280 ? 'A' : 'AAAA').
781 " instead of $typemap{${$args{rectype}}}; reverse zone not found for ${$args{val}}";
782 ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA});
783 return ('WARN', $msg);
784 }
785
786 # Check for duplicate PTRs. Note we don't have to play games with $code and $msg, because
787 # by definition there can't be duplicate PTRs if the reverse zone isn't managed here.
788 if ($args{update}) {
789 # Record update. There should usually be an existing PTR (the record being updated)
790 my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
791 " WHERE val = ?", undef, (${$args{val}})) };
792 if (@ptrs && (!grep /^$args{update}$/, @ptrs)) {
793 $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
794 $code = 'WARN';
795 }
796 } else {
797 # New record. Always warn if a PTR exists
798 my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
799 " WHERE val = ?", undef, (${$args{val}}));
800 $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want"
801 if $ptrcount;
802 $code = 'WARN' if $ptrcount;
803 }
804
805# my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
806# " WHERE val = ?", undef, ${$args{val}});
807# if ($ptrcount) {
808# my $curid = $dbh->selectrow_array("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
809# " WHERE val = ?
810# $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
811# $code = 'WARN';
812# }
813
814 ${$args{fields}} .= "rdns_id,";
815 push @{$args{vallist}}, $revid;
816 }
817
818 } else { # defrec eq 'y'
819 if ($args{revrec} eq 'y') {
820 ($code,$msg) = $self->_validate_12(%args);
821 return ($code,$msg) if $code eq 'FAIL';
822 if (${$args{rectype}} == 65280) {
823 return ('FAIL',"A+PTR record must be a valid IPv4 address or fragment")
824 if ${$args{val}} =~ /:/;
825 ${$args{val}} =~ s/^ZONE,/ZONE./; # Clean up after uncertain IP-fragment-type from _validate_12
826 } elsif (${$args{rectype}} == 65281) {
827 return ('FAIL',"AAAA+PTR record must be a valid IPv6 address or fragment")
828 if ${$args{val}} =~ /\./;
829 ${$args{val}} =~ s/^ZONE,/ZONE::/; # Clean up after uncertain IP-fragment-type from _validate_12
830 }
831 } else {
832 # This is easy. I also can't see a real use-case for A/AAAA+PTR in *all* forward
833 # domains, since you wouldn't be able to substitute both domain and reverse zone
834 # sanely, and you'd end up with guaranteed over-replicated PTR records that would
835 # confuse the hell out of pretty much anything that uses them.
836##fixme: make this a config flag?
837 return ('FAIL', "$typemap{${$args{rectype}}} records not allowed in default domains");
838 }
839 }
840
841 return ($code, $msg);
842} # done A+PTR record
843
844# AAAA+PTR record
845# A+PTR above has been magicked to handle AAAA+PTR as well.
846sub _validate_65281 {
847 return _validate_65280(@_);
848} # done AAAA+PTR record
849
850# PTR template record
851sub _validate_65282 {
852 my $self = shift;
853 my $dbh = $self->{dbh};
854
855 my %args = @_;
856
857 # we're *this* >.< close to being able to just call _validate_12... unfortunately we can't, quite.
858 if ($args{revrec} eq 'y') {
859 if ($args{defrec} eq 'n') {
860 return ('FAIL', "Template block ${$args{val}} is not within ".$self->revName($args{id}))
861 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
862##fixme: warn if $args{val} is not /31 or larger block?
863 ${$args{val}} = "$args{addr}";
864 } else {
865 if (${$args{val}} =~ /\./) {
866 # looks like a v4 or fragment
867 if (${$args{val}} =~ m|^\d+\.\d+\.\d+\.\d+(?:/\d+)?$|) {
868 # woo! a complete IP! validate it and normalize, or fail.
869 $args{addr} = NetAddr::IP->new(${$args{val}})
870 or return ('FAIL', "IP/value looks like IPv4 but isn't valid");
871 ${$args{val}} = "$args{addr}";
872 } else {
873 ${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/;
874 }
875 } elsif (${$args{val}} =~ /[a-f:]/) {
876 # looks like a v6 or fragment
877 ${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/;
878 if ($args{addr}) {
879 if ($args{addr}->addr =~ /^0/) {
880 ${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/;
881 } else {
882 ${$args{val}} = "$args{addr}";
883 }
884 }
885 } else {
886 # bare number (probably). These could be v4 or v6, so we'll
887 # expand on these on creation of a reverse zone.
888 ${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/;
889 }
890 }
891##fixme: validate %-patterns?
892
893# Unlike single PTR records, there is absolutely no way to sanely support multiple
894# PTR templates for the same block, since they expect to expand to all the individual
895# IPs on export. Nested templates should be supported though.
896
897 my @checkvals = (${$args{val}});
898 if (${$args{val}} =~ /,/) {
899 # push . and :: variants into checkvals if val has ,
900 my $tmp;
901 ($tmp = ${$args{val}}) =~ s/,/./;
902 push @checkvals, $tmp;
903 ($tmp = ${$args{val}}) =~ s/,/::/;
904 push @checkvals, $tmp;
905 }
906##fixme: this feels wrong still - need to restrict template pseudorecords to One Of Each
907# Per Netblock such that they don't conflict on export
908 my $typeck;
909# type 65282 -> ptr template -> look for any of 65282, 65283, 65284
910 $typeck = 'type=65283 OR type=65284' if ${$args{rectype}} == 65282;
911# type 65283 -> a+ptr template -> v4 -> look for 65282 or 65283
912 $typeck = 'type=65283' if ${$args{rectype}} == 65282;
913# type 65284 -> aaaa+ptr template -> v6 -> look for 65282 or 65284
914 $typeck = 'type=65284' if ${$args{rectype}} == 65282;
915 my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ? ".
916 "AND (type=65282 OR $typeck)");
917 foreach my $checkme (@checkvals) {
918 $pcsth->execute($checkme);
919 my ($rc) = $pcsth->fetchrow_array;
920 return ('FAIL', "Only one template pseudorecord may exist for a given IP block") if $rc > 1;
921 }
922
923 } else {
924 return ('FAIL', "Forward zones cannot contain PTR records");
925 }
926
927 return ('OK','OK');
928} # done PTR template record
929
930# A+PTR template record
931sub _validate_65283 {
932 my $self = shift;
933 my $dbh = $self->{dbh};
934
935 my %args = @_;
936
937 my ($code,$msg) = ('OK','OK');
938
939##fixme: need to fiddle things since A+PTR templates are acceptable in live
940# forward zones but not default records
941 if ($args{defrec} eq 'n') {
942 if ($args{revrec} eq 'n') {
943 ($code,$msg) = $self->_validate_1(%args) if ${$args{rectype}} == 65280;
944 ($code,$msg) = $self->_validate_28(%args) if ${$args{rectype}} == 65281;
945 return ($code,$msg) if $code eq 'FAIL';
946
947 # Check if the requested reverse zone exists - note, an IP fragment won't
948 # work here since we don't *know* which parent to put it in.
949 # ${$args{val}} has been validated as a valid IP by now, in one of the above calls.
950 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?".
951 " ORDER BY masklen(revnet) DESC", undef, (${$args{val}}));
952 # Fail if no match; we can't coerce a PTR-template type down to not include the PTR bit currently.
953 if (!$revid) {
954 $msg = "Can't ".($args{update} ? 'update' : 'add')." ${$args{host}}/${$args{val}} as ".
955 "$typemap{${$args{rectype}}}: reverse zone not found for ${$args{val}}";
956##fixme: add A template, AAAA template types?
957# ${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA});
958 return ('FAIL', $msg);
959 }
960
961 # Add reverse zone ID to field list and values
962 ${$args{fields}} .= "rdns_id,";
963 push @{$args{vallist}}, $revid;
964
965 } else {
966 return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".$self->revName($args{id}))
967 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
968 ${$args{val}} = "$args{addr}";
969
970 if (!(${$args{domid}} = $self->_hostparent(${$args{host}}))) {
971 my $addmsg = "Record ".($args{update} ? 'updated' : 'added').
972 " as PTR template instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}";
973 $msg .= "\n$addmsg" if $code eq 'WARN';
974 $msg = $addmsg if $code eq 'OK';
975 ${$args{rectype}} = 65282;
976 return ('WARN', $msg);
977 }
978
979 # Add domain ID to field list and values
980 ${$args{fields}} .= "domain_id,";
981 push @{$args{vallist}}, ${$args{domid}};
982 }
983
984 } else {
985 my ($code,$msg) = $self->_validate_65282(%args);
986 return ($code, $msg) if $code eq 'FAIL';
987 # get domain, check against ${$args{name}}
988 }
989
990 return ('OK','OK');
991} # done AAAA+PTR template record
992
993# AAAA+PTR template record
994sub _validate_65284 {
995 return ('OK','OK');
996} # done AAAA+PTR template record
997
998# Delegation record
999# This is essentially a specialized clone of the NS record, primarily useful
1000# for delegating IPv4 sub-/24 reverse blocks
1001sub _validate_65285 {
1002 my $self = shift;
1003 my $dbh = $self->{dbh};
1004
1005 my %args = @_;
1006
1007# Almost, but not quite, identical to NS record validation.
1008
1009 # Check that the target of the record is within the parent.
1010 # Yes, host<->val are mixed up here; can't see a way to avoid it. :(
1011 if ($args{defrec} eq 'n') {
1012 # Check if IP/address/zone/"subzone" is within the parent
1013 if ($args{revrec} eq 'y') {
1014 my $tmpip = NetAddr::IP->new(${$args{val}});
1015 my $pname = $self->revName($args{id});
1016 return ('FAIL',"${$args{val}} not within $pname")
1017 unless $self->_ipparent($args{defrec}, $args{revrec}, $args{val}, $args{id}, \$tmpip);
1018 # Normalize
1019 ${$args{val}} = "$tmpip";
1020 } else {
1021 my $pname = $self->domainName($args{id});
1022 ${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
1023 }
1024 } else {
1025 return ('FAIL',"Delegation records are not permitted in default record sets");
1026 }
1027 return ('OK','OK');
1028}
1029
1030
1031##
1032## Record data substitution subs
1033##
1034
1035# Replace ZONE in hostname, or create (most of) the actual proper zone name
1036sub _ZONE {
1037 my $zone = shift;
1038 my $string = shift;
1039 my $fr = shift || 'f'; # flag for forward/reverse order? nb: ignored for IP
1040 my $sep = shift || '-'; # Separator character - unlikely we'll ever need more than . or -
1041
1042 my $prefix;
1043
1044 $string =~ s/,/./ if !$zone->{isv6};
1045 $string =~ s/,/::/ if $zone->{isv6};
1046
1047 # Subbing ZONE in the host. We need to properly ID the netblock range
1048 # The subbed text should have "network IP with trailing zeros stripped" for
1049 # blocks lined up on octet (for v4) or hex-quad (for v6) boundaries
1050 # For blocks that do NOT line up on these boundaries, we take the most
1051 # significant octet or 16-bit chunk of the "broadcast" IP and append it
1052 # after a double-dash
1053 # ie:
1054 # 8.0.0.0/6 -> 8.0.0.0 -> 11.255.255.255; sub should be 8--11
1055 # 10.0.0.0/12 -> 10.0.0.0 -> 10.0.0.0 -> 10.15.255.255; sub should be 10-0--15
1056 # 192.168.4.0/22 -> 192.168.4.0 -> 192.168.7.255; sub should be 192-168-4--7
1057 # 192.168.0.8/29 -> 192.168.0.8 -> 192.168.0.15; sub should be 192-168-0-8--15
1058 # Similar for v6
1059
1060 if (!$zone->{isv6}) { # IPv4
1061
1062 $prefix = $zone->network->addr; # Just In Case someone managed to slip in
1063 # a funky subnet that had host bits set.
1064 my $bc = $zone->broadcast->addr;
1065
1066 if ($zone->masklen > 24) {
1067 $bc =~ s/^\d+\.\d+\.\d+\.//;
1068 } elsif ($zone->masklen > 16) {
1069 $prefix =~ s/\.0$//;
1070 $bc =~ s/^\d+\.\d+\.//;
1071 } elsif ($zone->masklen > 8) {
1072 $bc =~ s/^\d+\.//;
1073 $prefix =~ s/\.0\.0$//;
1074 } else {
1075 $prefix =~ s/\.0\.0\.0$//;
1076 }
1077 if ($zone->masklen % 8) {
1078 $bc =~ s/(\.255)+$//;
1079 $prefix .= "--$bc"; #"--".zone->masklen; # use range or mask length?
1080 }
1081 if ($fr eq 'f') {
1082 $prefix =~ s/\.+/$sep/g;
1083 } else {
1084 $prefix = join($sep, reverse(split(/\./, $prefix)));
1085 }
1086
1087 } else { # IPv6
1088
1089 if ($fr eq 'f') {
1090
1091 $prefix = $zone->network->addr; # Just In Case someone managed to slip in
1092 # a funky subnet that had host bits set.
1093 my $bc = $zone->broadcast->addr;
1094 if (($zone->masklen % 16) != 0) {
1095 # Strip trailing :0 off $prefix, and :ffff off the broadcast IP
1096 for (my $i=0; $i<(7-int($zone->masklen / 16)); $i++) {
1097 $prefix =~ s/:0$//;
1098 $bc =~ s/:ffff$//;
1099 }
1100 # Strip the leading 16-bit chunks off the front of the broadcast IP
1101 $bc =~ s/^([a-f0-9]+:)+//;
1102 # Append the remaining 16-bit chunk to the prefix after "--"
1103 $prefix .= "--$bc";
1104 } else {
1105 # Strip off :0 from the end until we reach the netblock length.
1106 for (my $i=0; $i<(8-$zone->masklen / 16); $i++) {
1107 $prefix =~ s/:0$//;
1108 }
1109 }
1110 # Actually deal with the separator
1111 $prefix =~ s/:/$sep/g;
1112
1113 } else { # $fr eq 'f'
1114
1115 $prefix = $zone->network->full; # Just In Case someone managed to slip in
1116 # a funky subnet that had host bits set.
1117 my $bc = $zone->broadcast->full;
1118 $prefix =~ s/://g; # clean these out since they're not spaced right for this case
1119 $bc =~ s/://g;
1120 # Strip trailing 0 off $prefix, and f off the broadcast IP, to match the mask length
1121 for (my $i=0; $i<(31-int($zone->masklen / 4)); $i++) {
1122 $prefix =~ s/0$//;
1123 $bc =~ s/f$//;
1124 }
1125 # Split and reverse the order of the nibbles in the network/broadcast IPs
1126 # trim another 0 for nibble-aligned blocks first, but only if we really have a block, not an IP
1127 $prefix =~ s/0$// if $zone->masklen % 4 == 0 && $zone->masklen != 128;
1128 my @nbits = reverse split //, $prefix;
1129 my @bbits = reverse split //, $bc;
1130 # Handle the sub-nibble case. Eww. I feel dirty supporting this...
1131 $nbits[0] = "$nbits[0]-$bbits[0]" if ($zone->masklen % 4) != 0;
1132 # Glue it back together
1133 $prefix = join($sep, @nbits);
1134
1135 } # $fr ne 'f'
1136
1137 } # $zone->{isv6}
1138
1139 # Do the substitution, finally
1140 $string =~ s/ZONE/$prefix/;
1141 $string =~ s/--/-/ if $sep ne '-'; # - as separator needs extra help for sub-octet v4 netblocks
1142 return $string;
1143} # done _ZONE()
1144
1145# Not quite a substitution sub, but placed here as it's basically the inverse of above;
1146# given the .arpa zone name, return the CIDR netblock the zone is for.
1147# Supports v4 non-octet/non-classful netblocks as per the method outlined in the Grasshopper Book (2nd Ed p217-218)
1148# Does NOT support non-quad v6 netblocks via the same scheme; it shouldn't ever be necessary.
1149# Takes a nominal .arpa zone name, returns a success code and NetAddr::IP, or a fail code and message
1150sub _zone2cidr {
1151 my $zone = shift;
1152
1153 my $cidr;
1154 my $tmpcidr;
1155 my $warnmsg = '';
1156
1157 if ($zone =~ /\.in-addr\.arpa\.?$/) {
1158 # v4 revzone, formal zone name type
1159 my $tmpzone = $zone;
1160 return ('FAIL', "Non-numerics in apparent IPv4 reverse zone name [$tmpzone]")
1161 if $tmpzone !~ m{^(?:\d+[/-])?[\d\.]+\.in-addr\.arpa\.?$};
1162 $tmpzone =~ s/\.in-addr\.arpa\.?//;
1163
1164 # Snag the octet pieces
1165 my @octs = split /\./, $tmpzone;
1166
1167 # Map result of a range manipulation to a mask length change. Cheaper than finding the 2-root of $octets[0]+1.
1168 # Note we will not support /31 blocks, mostly due to issues telling "24-31" -> .24/29 apart from
1169 # "24-31" -> .24/31", with a litte bit of "/31 is icky".
1170 my %maskmap = ( 3 => 2, 7 => 3, 15 => 4, 31 => 5, 63 => 6, 127 => 7,
1171 30 => 2, 29 => 3, 28 => 4, 27 => 5, 26 => 6, 25 => 7
1172 );
1173
1174 # Handle "range" blocks, eg, 80-83.168.192.in-addr.arpa (192.168.80.0/22)
1175 # Need to take the size of the range to offset the basic octet-based mask length,
1176 # and make sure the first number in the range gets used as the network address for the block
1177 # Alternate form: The second number is actually the real netmask, not the end of the range.
1178 my $masklen = 0;
1179 if ($octs[0] =~ m{^((\d+)[/-](\d+))$}) { # take the range...
1180 if (24 < $3 && $3 < 31) {
1181 # we have a real netmask
1182 $masklen = -$maskmap{$3};
1183 } else {
1184 # we have a range. NB: only real CIDR ranges are supported
1185 $masklen -= $maskmap{-(eval $1)}; # find the mask base...
1186 }
1187 $octs[0] = $2; # set the base octet of the range...
1188 }
1189 @octs = reverse @octs; # We can reverse the octet pieces now that we've extracted and munged any ranges
1190
1191# arguably we should only allow sub-octet range/mask in-addr.arpa
1192# specifications in the least significant octet, but the code is
1193# simpler if we deal with sub-octet delegations at any level.
1194
1195 # Now we find the "true" mask with the aid of the "base" calculated above
1196 if ($#octs == 0) {
1197 $masklen += 8;
1198 $tmpcidr = "$octs[0].0.0.0/$masklen"; # really hope we don't see one of these very often.
1199 } elsif ($#octs == 1) {
1200 $masklen += 16;
1201 $tmpcidr = "$octs[0].$octs[1].0.0/$masklen";
1202 } elsif ($#octs == 2) {
1203 $masklen += 24;
1204 $tmpcidr = "$octs[0].$octs[1].$octs[2].0/$masklen";
1205 } else {
1206 $masklen += 32;
1207 $tmpcidr = "$octs[0].$octs[1].$octs[2].$octs[3]/$masklen";
1208 }
1209
1210 } elsif ($zone =~ /\.ip6\.arpa\.?$/) {
1211 # v6 revzone, formal zone name type
1212 my $tmpzone = $zone;
1213##fixme: if-n-when we decide we can support sub-nibble v6 zone names, we'll need to change this segment
1214 return ('FAIL', "Non-hexadecimals in apparent IPv6 reverse zone name [$tmpzone]")
1215 if $tmpzone !~ /^[a-fA-F\d\.]+\.ip6\.arpa\.?$/;
1216 $tmpzone =~ s/\.ip6\.arpa\.?//;
1217 my @quads = reverse(split(/\./, $tmpzone));
1218 $warnmsg .= "Apparent sub-/64 IPv6 reverse zone\n" if $#quads > 15;
1219 my $nc;
1220 foreach (@quads) {
1221 $tmpcidr .= $_;
1222 $tmpcidr .= ":" if ++$nc % 4 == 0 && $nc < $#quads;
1223 }
1224 my $nq = 1 if $nc % 4 != 0;
1225 my $mask = $nc * 4; # need to do this here because we probably increment it below
1226 while ($nc++ % 4 != 0) {
1227 $tmpcidr .= "0";
1228 }
1229 # polish it off with trailing ::/mask if this is a CIDR block instead of an IP
1230 $tmpcidr .= "::/$mask" if $mask != 128;
1231 }
1232
1233 # Just to be sure, use NetAddr::IP to validate. Saves a lot of nasty regex watching for valid octet values.
1234 return ('FAIL', "Invalid zone $zone (apparent netblock $tmpcidr)")
1235 unless $cidr = NetAddr::IP->new($tmpcidr);
1236
1237 if ($warnmsg) {
1238 $errstr = $warnmsg;
1239 return ('WARN', $cidr);
1240 }
1241 return ('OK', $cidr);
1242##fixme: use wantarray() to decide what to return?
1243} # done _zone2cidr()
1244
1245# Record template %-parameter expansion, IPv4. Note that IPv6 doesn't
1246# really have a sane way to handle this type of expansion at the moment
1247# due to the size of the address space.
1248# Takes a reference to a template string to be expanded, and an IP to use in the replacement.
1249sub _template4_expand {
1250 my $tmpl = shift;
1251 my $ip = shift;
1252
1253 my @ipparts = split /\./, $ip;
1254 my @iphex;
1255 my @ippad;
1256 for (@ipparts) {
1257 push @iphex, sprintf("%x", $_);
1258 push @ippad, sprintf("%0.3u", $_);
1259 }
1260
1261 # IP substitutions in template records:
1262 #major patterns:
1263 #dashed IP, forward and reverse
1264 #underscoreed IP, forward and reverse
1265 #dotted IP, forward and reverse (even if forward is... dumb)
1266 # -> %r for reverse, %i for forward, leading -, _, or . to indicate separator, defaults to -
1267 # %r or %-r => %4d-%3d-%2d-%1d
1268 # %_r => %4d_%3d_%2d_%1d
1269 # %.r => %4d.%3d.%2d.%1d
1270 # %i or %-i => %1d-%2d-%3d-%4d
1271 # %_i => %1d_%2d_%3d_%4d
1272 # %.i => %1d.%2d.%3d.%4d
1273 $$tmpl =~ s/\%r/\%4d-\%3d-\%2d-\%1d/g;
1274 $$tmpl =~ s/\%([-._])r/\%4d$1\%3d$1\%2d$1\%1d/g;
1275 $$tmpl =~ s/\%i/\%1d-\%2d-\%3d-\%4d/g;
1276 $$tmpl =~ s/\%([-._])i/\%1d$1\%2d$1\%3d$1\%4d/g;
1277
1278 #hex-coded IP
1279 # %h
1280 $$tmpl =~ s/\%h/$iphex[0]$iphex[1]$iphex[2]$iphex[3]/g;
1281
1282 #IP as decimal-coded 32-bit value
1283 # %d
1284 my $iptmp = $ipparts[0]*256*256*256 + $ipparts[1]*256*256 + $ipparts[2]*256 + $ipparts[3];
1285 $$tmpl =~ s/\%d/$iptmp/g;
1286
1287 #minor patterns (per-octet)
1288 # %[1234][dh0]
1289 #octet
1290 #hex-coded octet
1291 #0-padded octet
1292 $$tmpl =~ s/\%([1234])d/$ipparts[$1-1]/g;
1293 $$tmpl =~ s/\%([1234])h/$iphex[$1-1]/g;
1294 $$tmpl =~ s/\%([1234])0/$ippad[$1-1]/g;
1295} # _template4_expand()
1296
1297# Broad syntactic check on the hostname. Checks for valid characters, correctly-expandable template patterns.
1298# Takes the hostname, type, and live/default and forward/reverse flags
1299# Returns true/false, sets errstr on failures
1300sub _check_hostname_form {
1301 my ($hname,$rectype,$defrec,$revrec) = @_;
1302
1303 if ($hname =~ /\%/ && ($rectype == 65282 || $rectype == 65283) ) {
1304 my $tmphost = $hname;
1305 # we don't actually need to test with the real IP passed; that saves a bit of fiddling.
1306 _template4_expand(\$tmphost, '10.10.10.10');
1307 if ($tmphost =~ /\%/) {
1308 $errstr = "Invalid template $hname";
1309 return;
1310 }
1311 } elsif ($revrec eq 'y') {
1312 # Reverse zones don't support @ in hostnames
1313 # Also skip failure on revzone TXT records; the hostname contains the TXT content in that case.
1314 if ($rectype != $reverse_typemap{TXT} && lc($hname) !~ /^[0-9a-z_.-]+$/) {
1315 $errstr = "Hostnames may not contain anything other than (0-9 a-z . _)";
1316 return;
1317 }
1318 } else {
1319 if (lc($hname) !~ /^(?:\*\.)?(?:[0-9a-z_.-]+|@)$/) {
1320 # Don't mention @, because it would be far too wordy to explain the nuance of @
1321 $errstr = "Hostnames may not contain anything other than (0-9 a-z . _)";
1322 return;
1323 }
1324 }
1325 return 1;
1326} # _check_hostname_form()
1327
1328
1329##
1330## Initialization and cleanup subs
1331##
1332
1333## DNSDB::__cfgload()
1334# Private sub to parse a config file and load it into %config
1335# Takes a filename and a hashref to put the parsed entries in
1336sub __cfgload {
1337 $errstr = '';
1338 my $cfgfile = shift;
1339 my $cfg = shift;
1340
1341 if (open CFG, "<$cfgfile") {
1342 while (<CFG>) {
1343 chomp;
1344 s/^\s*//;
1345 next if /^#/;
1346 next if /^$/;
1347# hmm. more complex bits in this file might require [heading] headers, maybe?
1348# $mode = $1 if /^\[(a-z)+]/;
1349 # DB connect info
1350 $cfg->{dbname} = $1 if /^dbname\s*=\s*([a-z0-9_.-]+)/i;
1351 $cfg->{dbuser} = $1 if /^dbuser\s*=\s*([a-z0-9_.-]+)/i;
1352 $cfg->{dbpass} = $1 if /^dbpass\s*=\s*([a-z0-9_.-]+)/i;
1353 $cfg->{dbhost} = $1 if /^dbhost\s*=\s*([a-z0-9_.-]+)/i;
1354 # Mail settings
1355 $cfg->{mailhost} = $1 if /^mailhost\s*=\s*([a-z0-9_.-]+)/i;
1356 $cfg->{mailnotify} = $1 if /^mailnotify\s*=\s*([a-z0-9_.\@-]+)/i;
1357 $cfg->{mailsender} = $1 if /^mailsender\s*=\s*([a-z0-9_.\@-]+)/i;
1358 $cfg->{mailname} = $1 if /^mailname\s*=\s*([a-z0-9\s_.-]+)/i;
1359 $cfg->{orgname} = $1 if /^orgname\s*=\s*([a-z0-9\s_.,'-]+)/i;
1360 $cfg->{domain} = $1 if /^domain\s*=\s*([a-z0-9_.-]+)/i;
1361 # session - note this is fed directly to CGI::Session
1362 $cfg->{timeout} = $1 if /^[tT][iI][mM][eE][oO][uU][tT]\s*=\s*(\d+[smhdwMy]?)/;
1363 $cfg->{sessiondir} = $1 if m{^sessiondir\s*=\s*([a-z0-9/_.-]+)}i;
1364 # misc
1365 $cfg->{log_failures} = $1 if /^log_failures\s*=\s*([a-z01]+)/i;
1366 $cfg->{perpage} = $1 if /^perpage\s*=\s*(\d+)/i;
1367 $cfg->{exportcache} = $1 if m{^exportcache\s*=\s*([a-z0-9/_.-]+)}i;
1368 $cfg->{usecache} = $1 if m{^usecache\s*=\s*([a-z01]+)}i;
1369 $cfg->{force_refresh} = $1 if /^force_refresh\s*=\s*([a-z01]+)/i;
1370 $cfg->{lowercase} = $1 if /^lowercase\s*=\s*([a-z01]+)/i;
1371 $cfg->{showrev_arpa} = $1 if /^showrev_arpa\s*=\s*([a-z]+)/i;
1372# not supported in dns.cgi yet
1373# $cfg->{templatedir} = $1 if m{^templatedir\s*=\s*([a-z0-9/_.-]+)}i;
1374# $cfg->{templateoverride} = $1 if m{^templateoverride\s*=\s*([a-z0-9/_.-]+)}i;
1375 # RPC options
1376 $cfg->{rpcmode} = $1 if /^rpc_mode\s*=\s*(socket|HTTP|XMLRPC)\s*$/i;
1377 $cfg->{maxfcgi} = $1 if /^max_fcgi_requests\s*=\s*(\d+)\s*$/i;
1378 if (my ($tmp) = /^rpc_iplist\s*=\s*(.+)/i) {
1379 my @ips = split /[,\s]+/, $tmp;
1380 my $rpcsys = shift @ips;
1381 push @{$cfg->{rpcacl}{$rpcsys}}, @ips;
1382 }
1383 }
1384 close CFG;
1385 } else {
1386 $errstr = "Couldn't load configuration file $cfgfile: $!";
1387 return;
1388 }
1389 return 1;
1390} # end __cfgload()
1391
1392
1393## DNSDB::connectDB()
1394# Creates connection to DNS database.
1395# Requires the database name, username, and password.
1396# Returns a handle to the db or undef on failure.
1397# Set up for a PostgreSQL db; could be any transactional DBMS with the
1398# right changes.
1399# Called by new(); not intended to be called publicly.
1400sub connectDB {
1401 $errstr = '';
1402 my $dbname = shift;
1403 my $user = shift;
1404 my $pass = shift;
1405 my $dbh;
1406 my $DSN = "DBI:Pg:dbname=$dbname";
1407
1408 my $host = shift;
1409 $DSN .= ";host=$host" if $host;
1410
1411# Note that we want to autocommit by default, and we will turn it off locally as necessary.
1412# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
1413 $dbh = DBI->connect($DSN, $user, $pass, {
1414 AutoCommit => 1,
1415 PrintError => 0
1416 });
1417 if (!$dbh) {
1418 $errstr = $DBI::errstr;
1419 return;
1420 }
1421#) if(!$dbh);
1422
1423 local $dbh->{RaiseError} = 1;
1424
1425 eval {
1426##fixme: initialize the DB if we can't find the table (since, by definition, there's
1427# nothing there if we can't select from it...)
1428 my $tblsth = $dbh->prepare("SELECT count(*) FROM pg_catalog.pg_class WHERE relkind='r' AND relname=?");
1429 my ($tblcount) = $dbh->selectrow_array($tblsth, undef, ('misc'));
1430# return (undef,$DBI::errstr) if $dbh->err;
1431
1432#if ($tblcount == 0) {
1433# # create tables one at a time, checking for each.
1434# return (undef, "check table misc missing");
1435#}
1436
1437# Return here if we can't select.
1438# This should retrieve the dbversion key.
1439 my $sth = $dbh->prepare("SELECT key,value FROM misc WHERE misc_id=1");
1440 $sth->execute();
1441# return (undef,$DBI::errstr) if ($sth->err);
1442
1443##fixme: do stuff to the DB on version mismatch
1444# x.y series should upgrade on $DNSDB::VERSION > misc(key=>version)
1445# DB should be downward-compatible; column defaults should give sane (if possibly
1446# useless-and-needs-help) values in columns an older software stack doesn't know about.
1447
1448# See if the select returned anything (or null data). This should
1449# succeed if the select executed, but...
1450 $sth->fetchrow();
1451# return (undef,$DBI::errstr) if ($sth->err);
1452
1453 $sth->finish;
1454
1455 }; # wrapped DB checks
1456 if ($@) {
1457 $errstr = $@;
1458 return;
1459 }
1460
1461# If we get here, we should be OK.
1462 return $dbh;
1463} # end connectDB
1464
1465
1466## DNSDB::finish()
1467# Cleans up after database handles and so on.
1468# Requires a database handle
1469sub finish {
1470 my $self = shift;
1471 $self->{dbh}->disconnect;
1472} # end finish
1473
1474
1475## DNSDB::initGlobals()
1476# Initialize global variables
1477# NB: this does NOT include web-specific session variables!
1478sub initGlobals {
1479 my $self = shift;
1480 my $dbh = $self->{dbh};
1481
1482# load record types from database
1483 my $sth = $dbh->prepare("SELECT val,name,stdflag FROM rectypes");
1484 $sth->execute;
1485 while (my ($recval,$recname,$stdflag) = $sth->fetchrow_array()) {
1486 $typemap{$recval} = $recname;
1487 $reverse_typemap{$recname} = $recval;
1488 # now we fill the record validation function hash
1489 if ($stdflag < 5) {
1490 my $fn = "_validate_$recval";
1491 $validators{$recval} = \&$fn;
1492 } else {
1493 my $fn = "sub { return ('FAIL','Type $recval ($recname) not supported'); }";
1494 $validators{$recval} = eval $fn;
1495 }
1496 }
1497} # end initGlobals
1498
1499
1500## DNSDB::initRPC()
1501# Takes a remote username and remote fullname.
1502# Sets up the RPC logging-pseudouser if needed.
1503# Sets the %userdata hash for logging.
1504# Returns undef on failure
1505sub initRPC {
1506 my $self = shift;
1507 my $dbh = $self->{dbh};
1508 my %args = @_;
1509
1510 return if !$args{username};
1511 return if !$args{fullname};
1512
1513 $args{username} = "$args{username}/$args{rpcsys}";
1514
1515 my $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status".
1516 " FROM users WHERE username=?", undef, ($args{username}) );
1517 if (!$tmpuser) {
1518 $dbh->do("INSERT INTO users (username,password,firstname,type) VALUES (?,'RPC',?,'R')", undef,
1519 ($args{username}, $args{fullname}) );
1520 $tmpuser = $dbh->selectrow_hashref("SELECT username,user_id AS userid,group_id,firstname,lastname,status".
1521 " FROM users WHERE username=?", undef, ($args{username}) );
1522 }
1523 $tmpuser->{lastname} = '' if !$tmpuser->{lastname};
1524 $self->{loguserid} = $tmpuser->{userid};
1525 $self->{logusername} = $tmpuser->{username};
1526 $self->{logfullname} = "$tmpuser->{firstname} $tmpuser->{lastname} ($args{rpcsys})";
1527 return 1 if $tmpuser;
1528} # end initRPC()
1529
1530
1531## DNSDB::login()
1532# Takes a database handle, username and password
1533# Returns a userdata hash (UID, GID, username, fullname parts) if username exists,
1534# password matches the one on file, and account is not disabled
1535# Returns undef otherwise
1536sub login {
1537 my $self = shift;
1538 my $dbh = $self->{dbh};
1539 my $user = shift;
1540 my $pass = shift;
1541
1542 my $userinfo = $dbh->selectrow_hashref("SELECT user_id,group_id,password,firstname,lastname,status".
1543 " FROM users WHERE username=?",
1544 undef, ($user) );
1545 return if !$userinfo;
1546 return if !$userinfo->{status};
1547
1548 if ($userinfo->{password} =~ m|^\$1\$([A-Za-z0-9/.]+)\$|) {
1549 # native passwords (crypt-md5)
1550 return if $userinfo->{password} ne unix_md5_crypt($pass,$1);
1551 } elsif ($userinfo->{password} =~ /^[0-9a-f]{32}$/) {
1552 # VegaDNS import (hex-coded MD5)
1553 return if $userinfo->{password} ne md5_hex($pass);
1554 } else {
1555 # plaintext (convenient now and then)
1556 return if $userinfo->{password} ne $pass;
1557 }
1558
1559 return $userinfo;
1560} # end login()
1561
1562
1563## DNSDB::initActionLog()
1564# Set up action logging. Takes a database handle and user ID
1565# Sets some internal globals and Does The Right Thing to set up a logging channel.
1566# This sets up _log() to spew out log entries to the defined channel without worrying
1567# about having to open a file or a syslog channel
1568##fixme Need to call _initActionLog_blah() for various logging channels, configured
1569# via dnsdb.conf, in $self->{log_channel} or something
1570# See https://secure.deepnet.cx/trac/dnsadmin/ticket/21
1571sub initActionLog {
1572 my $self = shift;
1573 my $dbh = $self->{dbh};
1574 my $uid = shift;
1575
1576 return if !$uid;
1577
1578 # snag user info for logging. there's got to be a way to not have to pass this back
1579 # and forth from a caller, but web usage means no persistence we can rely on from
1580 # the server side.
1581 my ($username,$fullname) = $dbh->selectrow_array("SELECT username, firstname || ' ' || lastname".
1582 " FROM users WHERE user_id=?", undef, ($uid));
1583##fixme: errors are unpossible!
1584
1585 $self->{logusername} = $username;
1586 $self->{loguserid} = $uid;
1587 $self->{logfullname} = $fullname;
1588
1589 # convert to real check once we have other logging channels
1590 # if ($self->{log_channel} eq 'sql') {
1591 # Open Log, Sez Me!
1592 # }
1593
1594} # end initActionLog
1595
1596
1597## DNSDB::getPermissions()
1598# Get permissions from DB
1599# Requires DB handle, group or user flag, ID, and hashref.
1600sub getPermissions {
1601 my $self = shift;
1602 my $dbh = $self->{dbh};
1603
1604 my $type = shift;
1605 my $id = shift;
1606 my $hash = shift;
1607
1608 my $sql = qq(
1609 SELECT
1610 p.admin,p.self_edit,
1611 p.group_create,p.group_edit,p.group_delete,
1612 p.user_create,p.user_edit,p.user_delete,
1613 p.domain_create,p.domain_edit,p.domain_delete,
1614 p.record_create,p.record_edit,p.record_delete,p.record_locchg,
1615 p.location_create,p.location_edit,p.location_delete,p.location_view
1616 FROM permissions p
1617 );
1618 if ($type eq 'group') {
1619 $sql .= qq(
1620 JOIN groups g ON g.permission_id=p.permission_id
1621 WHERE g.group_id=?
1622 );
1623 } else {
1624 $sql .= qq(
1625 JOIN users u ON u.permission_id=p.permission_id
1626 WHERE u.user_id=?
1627 );
1628 }
1629
1630 my $sth = $dbh->prepare($sql);
1631
1632##fixme? we don't trap other plain SELECT errors
1633 $sth->execute($id);
1634
1635# my $permref = $sth->fetchrow_hashref;
1636# return $permref;
1637# $hash = $permref;
1638# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
1639 ($hash->{admin},$hash->{self_edit},
1640 $hash->{group_create},$hash->{group_edit},$hash->{group_delete},
1641 $hash->{user_create},$hash->{user_edit},$hash->{user_delete},
1642 $hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
1643 $hash->{record_create},$hash->{record_edit},$hash->{record_delete},$hash->{record_locchg},
1644 $hash->{location_create},$hash->{location_edit},$hash->{location_delete},$hash->{location_view}
1645 ) = $sth->fetchrow_array;
1646
1647} # end getPermissions()
1648
1649
1650## DNSDB::changePermissions()
1651# Update an ACL entry
1652# Takes a db handle, type, owner-id, and hashref for the changed permissions.
1653sub changePermissions {
1654 my $self = shift;
1655 my $dbh = $self->{dbh};
1656 my $type = shift;
1657 my $id = shift;
1658 my $newperms = shift;
1659 my $inherit = shift || 0;
1660
1661 my $resultmsg = '';
1662
1663 # see if we're switching from inherited to custom. for bonus points,
1664 # snag the permid and parent permid anyway, since we'll need the permid
1665 # to set/alter custom perms, and both if we're switching from custom to
1666 # inherited.
1667 my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id,".
1668 ($type eq 'user' ? 'u.group_id,u.username' : 'u.parent_group_id,u.group_name').
1669 " FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
1670 " JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
1671 " WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
1672 $sth->execute($id);
1673
1674 my ($wasinherited,$permid,$parpermid,$parid,$name) = $sth->fetchrow_array;
1675
1676# hack phtoui
1677# group id 1 is "special" in that it's it's own parent (err... possibly.)
1678# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
1679 $wasinherited = 0 if ($type eq 'group' && $id == 1);
1680
1681 local $dbh->{AutoCommit} = 0;
1682 local $dbh->{RaiseError} = 1;
1683
1684 # Wrap all the SQL in a transaction
1685 eval {
1686 if ($inherit) {
1687
1688 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
1689 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
1690 $dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
1691
1692 } else {
1693
1694 if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
1695##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
1696# ... if'n'when we have groups with fully inherited permissions.
1697 # SQL is coo
1698 $dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
1699 "SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
1700 ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
1701 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
1702 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
1703 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
1704 }
1705
1706 # and now set the permissions we were passed
1707 foreach (@permtypes) {
1708 if (defined ($newperms->{$_})) {
1709 $dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
1710 }
1711 }
1712
1713 } # (inherited->)? custom
1714
1715 if ($type eq 'user') {
1716 $resultmsg = "Updated permissions for user $name";
1717 } else {
1718 $resultmsg = "Updated default permissions for group $name";
1719 }
1720 $self->_log(group_id => ($type eq 'user' ? $parid : $id), entry => $resultmsg);
1721 $dbh->commit;
1722 }; # end eval
1723 if ($@) {
1724 my $msg = $@;
1725 eval { $dbh->rollback; };
1726 return ('FAIL',"Error changing permissions: $msg");
1727 }
1728
1729 return ('OK',$resultmsg);
1730} # end changePermissions()
1731
1732
1733## DNSDB::comparePermissions()
1734# Compare two permission hashes
1735# Returns '>', '<', '=', '!'
1736sub comparePermissions {
1737 my $self = shift;
1738 my $p1 = shift;
1739 my $p2 = shift;
1740
1741 my $retval = '='; # assume equality until proven otherwise
1742
1743 no warnings "uninitialized";
1744
1745 foreach (@permtypes) {
1746 next if $p1->{$_} == $p2->{$_}; # equal is good
1747 if ($p1->{$_} && !$p2->{$_}) {
1748 if ($retval eq '<') { # if we've already found an unequal pair where
1749 $retval = '!'; # $p2 has more access, and we now find a pair
1750 last; # where $p1 has more access, the overall access
1751 } # is neither greater or lesser, it's unequal.
1752 $retval = '>';
1753 }
1754 if (!$p1->{$_} && $p2->{$_}) {
1755 if ($retval eq '>') { # if we've already found an unequal pair where
1756 $retval = '!'; # $p1 has more access, and we now find a pair
1757 last; # where $p2 has more access, the overall access
1758 } # is neither greater or lesser, it's unequal.
1759 $retval = '<';
1760 }
1761 }
1762 return $retval;
1763} # end comparePermissions()
1764
1765
1766## DNSDB::changeGroup()
1767# Change group ID of an entity
1768# Takes a database handle, entity type, entity ID, and new group ID
1769sub changeGroup {
1770 my $self = shift;
1771 my $dbh = $self->{dbh};
1772 my $type = shift;
1773 my $id = shift;
1774 my $newgrp = shift;
1775
1776##fixme: fail on not enough args
1777 #return ('FAIL', "Missing
1778
1779 return ('FAIL', "Can't change the group of a $type")
1780 unless grep /^$type$/, ('domain','revzone','user','group'); # could be extended for defrecs?
1781
1782 # Collect some names for logging and messages
1783 my $entname;
1784 if ($type eq 'domain') {
1785 $entname = $self->domainName($id);
1786 } elsif ($type eq 'revzone') {
1787 $entname = $self->revName($id);
1788 } elsif ($type eq 'user') {
1789 $entname = $self->userFullName($id, '%u');
1790 } elsif ($type eq 'group') {
1791 $entname = $self->groupName($id);
1792 }
1793
1794 my ($oldgid) = $dbh->selectrow_array("SELECT group_id FROM $par_tbl{$type} WHERE $id_col{$type}=?",
1795 undef, ($id));
1796 my $oldgname = $self->groupName($oldgid);
1797 my $newgname = $self->groupName($newgrp);
1798
1799 return ('FAIL', "Can't move things into a group that doesn't exist") if !$newgname;
1800
1801 return ('WARN', "Nothing to do, new group is the same as the old group") if $oldgid == $newgrp;
1802
1803 # Allow transactions, and raise an exception on errors so we can catch it later.
1804 # Use local to make sure these get "reset" properly on exiting this block
1805 local $dbh->{AutoCommit} = 0;
1806 local $dbh->{RaiseError} = 1;
1807
1808 eval {
1809 $dbh->do("UPDATE $par_tbl{$type} SET group_id=? WHERE $id_col{$type}=?", undef, ($newgrp, $id));
1810 # Log the change in both the old and new groups
1811 $self->_log(group_id => $oldgid, entry => "Moved $type $entname from $oldgname to $newgname");
1812 $self->_log(group_id => $newgrp, entry => "Moved $type $entname from $oldgname to $newgname");
1813 $dbh->commit;
1814 };
1815 if ($@) {
1816 my $msg = $@;
1817 eval { $dbh->rollback; };
1818 if ($self->{log_failures}) {
1819 $self->_log(group_id => $oldgid, entry => "Error moving $type $entname to $newgname: $msg");
1820 $dbh->commit; # since we enabled transactions earlier
1821 }
1822 return ('FAIL',"Error moving $type $entname to $newgname: $msg");
1823 }
1824
1825 return ('OK',"Moved $type $entname from $oldgname to $newgname");
1826} # end changeGroup()
1827
1828
1829##
1830## Processing subs
1831##
1832
1833## DNSDB::addDomain()
1834# Add a domain
1835# Takes a database handle, domain name, numeric group, boolean(ish) state (active/inactive),
1836# and user info hash (for logging).
1837# Returns a status code and message
1838sub addDomain {
1839 $errstr = '';
1840 my $self = shift;
1841 my $dbh = $self->{dbh};
1842 my $domain = shift;
1843 return ('FAIL',"Domain must not be blank\n") if !$domain;
1844 my $group = shift;
1845 return ('FAIL',"Group must be specified\n") if !defined($group);
1846 my $state = shift;
1847 return ('FAIL',"Domain status must be specified\n") if !defined($state);
1848 my $defloc = shift || '';
1849
1850 $state = 1 if $state =~ /^active$/;
1851 $state = 1 if $state =~ /^on$/;
1852 $state = 0 if $state =~ /^inactive$/;
1853 $state = 0 if $state =~ /^off$/;
1854
1855 return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/;
1856
1857 $domain = lc($domain) if $self->{lowercase};
1858
1859 return ('FAIL', "Invalid characters in domain") if $domain !~ /^[a-zA-Z0-9_.-]+$/;
1860
1861 my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)");
1862 my $dom_id;
1863
1864# quick check to start to see if we've already got one
1865 $sth->execute($domain);
1866 ($dom_id) = $sth->fetchrow_array;
1867
1868 return ('FAIL', "Domain already exists") if $dom_id;
1869
1870 # Allow transactions, and raise an exception on errors so we can catch it later.
1871 # Use local to make sure these get "reset" properly on exiting this block
1872 local $dbh->{AutoCommit} = 0;
1873 local $dbh->{RaiseError} = 1;
1874
1875 # Wrap all the SQL in a transaction
1876 eval {
1877 # insert the domain...
1878 $dbh->do("INSERT INTO domains (domain,group_id,status,default_location) VALUES (?,?,?,?)", undef,
1879 ($domain, $group, $state, $defloc));
1880
1881 # get the ID...
1882 ($dom_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
1883 undef, ($domain));
1884
1885 $self->_log(domain_id => $dom_id, group_id => $group,
1886 entry => "Added ".($state ? 'active' : 'inactive')." domain $domain");
1887
1888 # ... and now we construct the standard records from the default set. NB: group should be variable.
1889 my $sth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
1890 my $sth_in = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,distance,weight,port,ttl,location)".
1891 " VALUES ($dom_id,?,?,?,?,?,?,?,?)");
1892 $sth->execute($group);
1893 while (my ($host, $type, $val, $dist, $weight, $port, $ttl) = $sth->fetchrow_array()) {
1894 $host =~ s/DOMAIN/$domain/g;
1895 $val =~ s/DOMAIN/$domain/g;
1896 $sth_in->execute($host, $type, $val, $dist, $weight, $port, $ttl, $defloc);
1897 if ($typemap{$type} eq 'SOA') {
1898 my @tmp1 = split /:/, $host;
1899 my @tmp2 = split /:/, $val;
1900 $self->_log(domain_id => $dom_id, group_id => $group,
1901 entry => "[new $domain] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
1902 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl");
1903 } else {
1904 my $logentry = "[new $domain] Added record '$host $typemap{$type}";
1905 $logentry .= " [distance $dist]" if $typemap{$type} eq 'MX';
1906 $logentry .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$type} eq 'SRV';
1907 $self->_log(domain_id => $dom_id, group_id => $group,
1908 entry => $logentry." $val', TTL $ttl");
1909 }
1910 }
1911
1912 # once we get here, we should have suceeded.
1913 $dbh->commit;
1914 }; # end eval
1915
1916 if ($@) {
1917 my $msg = $@;
1918 eval { $dbh->rollback; };
1919 $self->_log(group_id => $group, entry => "Failed adding domain $domain ($msg)")
1920 if $self->{log_failures};
1921 $dbh->commit; # since we enabled transactions earlier
1922 return ('FAIL',$msg);
1923 } else {
1924 return ('OK',$dom_id);
1925 }
1926} # end addDomain
1927
1928
1929## DNSDB::delZone()
1930# Delete a forward or reverse zone.
1931# Takes a database handle, zone ID, and forward/reverse flag.
1932# for now, just delete the records, then the domain.
1933# later we may want to archive it in some way instead (status code 2, for example?)
1934sub delZone {
1935 my $self = shift;
1936 my $dbh = $self->{dbh};
1937 my $zoneid = shift;
1938 my $revrec = shift;
1939
1940 # Allow transactions, and raise an exception on errors so we can catch it later.
1941 # Use local to make sure these get "reset" properly on exiting this block
1942 local $dbh->{AutoCommit} = 0;
1943 local $dbh->{RaiseError} = 1;
1944
1945 my $msg = '';
1946 my $failmsg = '';
1947 my $zone = ($revrec eq 'n' ? $self->domainName($zoneid) : $self->revName($zoneid));
1948
1949 return ('FAIL', ($revrec eq 'n' ? 'Domain' : 'Reverse zone')." ID $zoneid doesn't exist") if !$zone;
1950
1951 # Set this up here since we may use if if $self->{log_failures} is enabled
1952 my %loghash;
1953 $loghash{domain_id} = $zoneid if $revrec eq 'n';
1954 $loghash{rdns_id} = $zoneid if $revrec eq 'y';
1955 $loghash{group_id} = $self->parentID(
1956 id => $zoneid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec);
1957
1958 # Wrap all the SQL in a transaction
1959 eval {
1960 # Disentangle custom record types before removing the
1961 # ones that are only in the zone to be deleted
1962 if ($revrec eq 'n') {
1963 my $sth = $dbh->prepare("UPDATE records SET type=?,domain_id=0 WHERE domain_id=? AND type=?");
1964 $failmsg = "Failure converting multizone types to single-zone";
1965 $sth->execute($reverse_typemap{PTR}, $zoneid, 65280);
1966 $sth->execute($reverse_typemap{PTR}, $zoneid, 65281);
1967 $sth->execute(65282, $zoneid, 65283);
1968 $sth->execute(65282, $zoneid, 65284);
1969 $failmsg = "Failure removing domain records";
1970 $dbh->do("DELETE FROM records WHERE domain_id=?", undef, ($zoneid));
1971 $failmsg = "Failure removing domain";
1972 $dbh->do("DELETE FROM domains WHERE domain_id=?", undef, ($zoneid));
1973 } else {
1974 my $sth = $dbh->prepare("UPDATE records SET type=?,rdns_id=0 WHERE rdns_id=? AND type=?");
1975 $failmsg = "Failure converting multizone types to single-zone";
1976 $sth->execute($reverse_typemap{A}, $zoneid, 65280);
1977 $sth->execute($reverse_typemap{AAAA}, $zoneid, 65281);
1978# We don't have an "A template" or "AAAA template" type, although it might be useful for symmetry.
1979# $sth->execute(65286?, $zoneid, 65283);
1980# $sth->execute(65286?, $zoneid, 65284);
1981 $failmsg = "Failure removing reverse records";
1982 $dbh->do("DELETE FROM records WHERE rdns_id=?", undef, ($zoneid));
1983 $failmsg = "Failure removing reverse zone";
1984 $dbh->do("DELETE FROM revzones WHERE rdns_id=?", undef, ($zoneid));
1985 }
1986
1987 $msg = "Deleted ".($revrec eq 'n' ? 'domain' : 'reverse zone')." $zone";
1988 $loghash{entry} = $msg;
1989 $self->_log(%loghash);
1990
1991 # once we get here, we should have suceeded.
1992 $dbh->commit;
1993 }; # end eval
1994
1995 if ($@) {
1996 $msg = $@;
1997 eval { $dbh->rollback; };
1998 $loghash{entry} = "Error deleting $zone: $msg ($failmsg)";
1999 if ($self->{log_failures}) {
2000 $self->_log(%loghash);
2001 $dbh->commit; # since we enabled transactions earlier
2002 }
2003 return ('FAIL', $loghash{entry});
2004 } else {
2005 return ('OK', $msg);
2006 }
2007
2008} # end delZone()
2009
2010
2011## DNSDB::domainName()
2012# Return the domain name based on a domain ID
2013# Takes a database handle and the domain ID
2014# Returns the domain name or undef on failure
2015sub domainName {
2016 $errstr = '';
2017 my $self = shift;
2018 my $dbh = $self->{dbh};
2019 my $domid = shift;
2020 my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
2021 $errstr = $DBI::errstr if !$domname;
2022 return $domname if $domname;
2023} # end domainName()
2024
2025
2026## DNSDB::revName()
2027# Return the reverse zone name based on an rDNS ID
2028# Takes a database handle and the rDNS ID, and an optional flag to force return of the CIDR zone
2029# instead of the formal .arpa zone name
2030# Returns the reverse zone name or undef on failure
2031sub revName {
2032 $errstr = '';
2033 my $self = shift;
2034 my $dbh = $self->{dbh};
2035 my $revid = shift;
2036 my $cidrflag = shift || 'n';
2037 my ($revname) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id=?", undef, ($revid) );
2038 $errstr = $DBI::errstr if !$revname;
2039 my $tmp = new NetAddr::IP $revname;
2040 $revname = _ZONE($tmp, 'ZONE', 'r', '.').($tmp->{isv6} ? '.ip6.arpa' : '.in-addr.arpa')
2041 if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') && $cidrflag eq 'n';
2042 return $revname if $revname;
2043} # end revName()
2044
2045
2046## DNSDB::domainID()
2047# Takes a database handle and domain name
2048# Returns the domain ID number
2049sub domainID {
2050 $errstr = '';
2051 my $self = shift;
2052 my $dbh = $self->{dbh};
2053 my $domain = shift;
2054 my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
2055 undef, ($domain) );
2056 if (!$domid) {
2057 if ($dbh->err) {
2058 $errstr = $DBI::errstr;
2059 } else {
2060 $errstr = "Domain $domain not present";
2061 }
2062 }
2063 return $domid if $domid;
2064} # end domainID()
2065
2066
2067## DNSDB::revID()
2068# Takes a database handle and reverse zone name
2069# Returns the rDNS ID number
2070sub revID {
2071 $errstr = '';
2072 my $self = shift;
2073 my $dbh = $self->{dbh};
2074 my $revzone = shift;
2075 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ($revzone) );
2076 if (!$revid) {
2077 if ($dbh->err) {
2078 $errstr = $DBI::errstr;
2079 } else {
2080 $errstr = "Reverse zone $revzone not present";
2081 }
2082 }
2083 return $revid if $revid;
2084} # end revID()
2085
2086
2087## DNSDB::addRDNS
2088# Adds a reverse DNS zone
2089# Takes a database handle, CIDR block, reverse DNS pattern, numeric group,
2090# and boolean(ish) state (active/inactive)
2091# Returns a status code and message
2092sub addRDNS {
2093 my $self = shift;
2094 my $dbh = $self->{dbh};
2095 my $zone = shift;
2096
2097 # Autodetect formal .arpa zones
2098 if ($zone =~ /\.arpa\.?$/) {
2099 my $code;
2100 ($code,$zone) = _zone2cidr($zone);
2101 return ('FAIL', $zone) if $code eq 'FAIL';
2102 }
2103 $zone = NetAddr::IP->new($zone);
2104
2105 return ('FAIL',"Zone name must be a valid CIDR netblock") unless ($zone && $zone->addr !~ /^0/);
2106 my $revpatt = shift; # construct a custom (A/AAAA+)? PTR template record
2107 my $group = shift;
2108 my $state = shift;
2109 my $defloc = shift || '';
2110
2111 $state = 1 if $state =~ /^active$/;
2112 $state = 1 if $state =~ /^on$/;
2113 $state = 0 if $state =~ /^inactive$/;
2114 $state = 0 if $state =~ /^off$/;
2115
2116 return ('FAIL',"Invalid zone status") if $state !~ /^\d+$/;
2117
2118# quick check to start to see if we've already got one
2119 my ($rdns_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ("$zone"));
2120
2121 return ('FAIL', "Zone already exists") if $rdns_id;
2122
2123 # Allow transactions, and raise an exception on errors so we can catch it later.
2124 # Use local to make sure these get "reset" properly on exiting this block
2125 local $dbh->{AutoCommit} = 0;
2126 local $dbh->{RaiseError} = 1;
2127
2128 my $warnstr = '';
2129 my $defttl = 3600; # 1 hour should be reasonable. And unless things have gone horribly
2130 # wrong, we should have a value to override this anyway.
2131
2132 # Wrap all the SQL in a transaction
2133 eval {
2134 # insert the zone...
2135 $dbh->do("INSERT INTO revzones (revnet,group_id,status,default_location) VALUES (?,?,?,?)", undef,
2136 ($zone, $group, $state, $defloc) );
2137
2138 # get the ID...
2139 ($rdns_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')");
2140
2141 $self->_log(rdns_id => $rdns_id, group_id => $group,
2142 entry => "Added ".($state ? 'active' : 'inactive')." reverse zone $zone");
2143
2144 # ... and now we construct the standard records from the default set. NB: group should be variable.
2145 my $sth = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
2146 my $sth_in = $dbh->prepare("INSERT INTO records (rdns_id,domain_id,host,type,val,ttl,location)".
2147 " VALUES ($rdns_id,?,?,?,?,?,?)");
2148 $sth->execute($group);
2149 while (my ($host,$type,$val,$ttl) = $sth->fetchrow_array()) {
2150 # Silently skip v4/v6 mismatches. This is not an error, this is expected.
2151 if ($zone->{isv6}) {
2152 next if ($type == 65280 || $type == 65283);
2153 } else {
2154 next if ($type == 65281 || $type == 65284);
2155 }
2156
2157 $host =~ s/ADMINDOMAIN/$self->{domain}/g;
2158
2159 # Check to make sure the IP stubs will fit in the zone. Under most usage failures here should be rare.
2160 # On failure, tack a note on to a warning string and continue without adding this record.
2161 # While we're at it, we substitute $zone for ZONE in the value.
2162 if ($val eq 'ZONE') {
2163 # If we've got a pattern, we skip the default record version on (A+)PTR-template types
2164 next if $revpatt && ($type == 65282 || $type == 65283);
2165##fixme? do we care if we have multiple whole-zone templates?
2166 $val = $zone->network;
2167 } elsif ($val =~ /ZONE/) {
2168 my $tmpval = $val;
2169 $tmpval =~ s/ZONE//;
2170 # Bend the rules and allow single-trailing-number PTR or PTR template records to be inserted
2171 # as either v4 or v6. May make this an off-by-default config flag
2172 # Note that the origin records that may trigger this **SHOULD** already have ZONE,\d
2173 if ($type == 12 || $type == 65282) {
2174 $tmpval =~ s/[,.]/::/ if ($tmpval =~ /^[,.]\d+$/ && $zone->{isv6});
2175 $tmpval =~ s/[,:]+/./ if ($tmpval =~ /^(?:,|::)\d+$/ && !$zone->{isv6});
2176 }
2177 my $addr;
2178 if ($self->_ipparent('n', 'y', \$tmpval, $rdns_id, \$addr)) {
2179 $val = $addr->addr;
2180 } else {
2181 $warnstr .= "\nDefault record '$val $typemap{$type} $host' doesn't fit in $zone, skipping";
2182 next;
2183 }
2184 }
2185
2186 # Substitute $zone for ZONE in the hostname, but only for non-NS records.
2187 # NS records get this substitution on the value instead.
2188 $host = _ZONE($zone, $host) if $type != 2;
2189
2190 # Fill in the forward domain ID if we can find it, otherwise:
2191 # Coerce type down to PTR or PTR template if we can't
2192 my $domid = 0;
2193 if ($type >= 65280) {
2194 if (!($domid = $self->_hostparent($host))) {
2195 $warnstr .= "\nRecord added as PTR instead of $typemap{$type}; domain not found for $host";
2196 $type = $reverse_typemap{PTR};
2197 $domid = 0; # just to be explicit.
2198 }
2199 }
2200
2201 $sth_in->execute($domid,$host,$type,$val,$ttl,$defloc);
2202
2203 if ($typemap{$type} eq 'SOA') {
2204 my @tmp1 = split /:/, $host;
2205 my @tmp2 = split /:/, $val;
2206 $self->_log(rdns_id => $rdns_id, group_id => $group,
2207 entry => "[new $zone] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
2208 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl");
2209 $defttl = $tmp2[3];
2210 } else {
2211 my $logentry = "[new $zone] Added record '$host $typemap{$type} $val', TTL $ttl";
2212 $logentry .= ", default location ".$self->getLoc($defloc)->{description} if $defloc;
2213 $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group, entry => $logentry);
2214 }
2215 }
2216
2217 # Generate record based on provided pattern.
2218 if ($revpatt) {
2219 my $host;
2220 my $type = ($zone->{isv6} ? 65284 : 65283);
2221 my $val = $zone->network;
2222
2223 # Substitute $zone for ZONE in the hostname.
2224 $host = _ZONE($zone, $revpatt);
2225
2226 my $domid = 0;
2227 if (!($domid = $self->_hostparent($host))) {
2228 $warnstr .= "\nDefault pattern added as PTR template instead of $typemap{$type}; domain not found for $host";
2229 $type = 65282;
2230 $domid = 0; # just to be explicit.
2231 }
2232
2233 $sth_in->execute($domid,$host,$type,$val,$defttl,$defloc);
2234 my $logentry = "[new $zone] Added record '$host $typemap{$type}";
2235 $self->_log(rdns_id => $rdns_id, domain_id => $domid, group_id => $group,
2236 entry => $logentry." $val', TTL $defttl from pattern");
2237 }
2238
2239 # If there are warnings (presumably about default records skipped for cause) log them
2240 $self->_log(rdns_id => $rdns_id, group_id => $group, entry => "Warning(s) adding $zone:$warnstr")
2241 if $warnstr;
2242
2243 # once we get here, we should have suceeded.
2244 $dbh->commit;
2245 }; # end eval
2246
2247 if ($@) {
2248 my $msg = $@;
2249 eval { $dbh->rollback; };
2250 $self->_log(group_id => $group, entry => "Failed adding reverse zone $zone ($msg)")
2251 if $self->{log_failures};
2252 $dbh->commit; # since we enabled transactions earlier
2253 return ('FAIL',$msg);
2254 } else {
2255 my $retcode = 'OK';
2256 if ($warnstr) {
2257 $resultstr = $warnstr;
2258 $retcode = 'WARN';
2259 }
2260 return ($retcode, $rdns_id);
2261 }
2262
2263} # end addRDNS()
2264
2265
2266## DNSDB::getZoneCount
2267# Get count of zones in group or groups
2268# Takes a database handle and hash containing:
2269# - the "current" group
2270# - an array of "acceptable" groups
2271# - a flag for forward/reverse zones
2272# - Optionally accept a "starts with" and/or "contains" filter argument
2273# Returns an integer count of the resulting zone list.
2274sub getZoneCount {
2275 my $self = shift;
2276 my $dbh = $self->{dbh};
2277
2278 my %args = @_;
2279
2280 # Fail on bad curgroup argument. There's no sane fallback on this one.
2281 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2282 $errstr = "Bad or missing curgroup argument";
2283 return;
2284 }
2285 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2286 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2287 $errstr = "Bad childlist argument";
2288 return;
2289 }
2290
2291 my @filterargs;
2292 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2293 push @filterargs, "^$args{startwith}" if $args{startwith};
2294 $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
2295 push @filterargs, $args{filter} if $args{filter};
2296
2297 my $sql;
2298 # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
2299 if ($args{revrec} eq 'n') {
2300 $sql = "SELECT count(*) FROM domains".
2301 " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2302 ($args{startwith} ? " AND domain ~* ?" : '').
2303 ($args{filter} ? " AND domain ~* ?" : '');
2304 } else {
2305 $sql = "SELECT count(*) FROM revzones".
2306 " WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2307 ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2308# if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') {
2309 # Just In Case the UI is using formal .arpa notation, and someone enters something reversed,
2310 # we want to match both the formal and natural zone name
2311 $sql .= ($args{filter} ? " AND (CAST(revnet AS VARCHAR) ~* ? OR CAST(revnet AS VARCHAR) ~* ?)" : '');
2312 push @filterargs, join('[.]',reverse(split(/\[\.\]/,$args{filter}))) if $args{filter};
2313# } else {
2314# $sql .= ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2315# }
2316 }
2317 my ($count) = $dbh->selectrow_array($sql, undef, @filterargs);
2318 return $count;
2319} # end getZoneCount()
2320
2321
2322## DNSDB::getZoneList()
2323# Get a list of zones in the specified group(s)
2324# Takes the same arguments as getZoneCount() above
2325# Returns a reference to an array of hashrefs suitable for feeding to HTML::Template
2326sub getZoneList {
2327 my $self = shift;
2328 my $dbh = $self->{dbh};
2329
2330 my %args = @_;
2331
2332 my @zonelist;
2333
2334 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
2335 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2336
2337 # Fail on bad curgroup argument. There's no sane fallback on this one.
2338 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2339 $errstr = "Bad or missing curgroup argument";
2340 return;
2341 }
2342 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2343 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2344 $errstr = "Bad childlist argument";
2345 return;
2346 }
2347
2348 my @filterargs;
2349 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2350 push @filterargs, "^$args{startwith}" if $args{startwith};
2351 $args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
2352 push @filterargs, $args{filter} if $args{filter};
2353
2354 my $sql;
2355 # Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
2356 if ($args{revrec} eq 'n') {
2357 $args{sortby} = 'domain' if !$args{sortby} || !grep /^$args{sortby}$/, ('domain','group','status');
2358 $sql = "SELECT domain_id AS zoneid,domain AS zone,status,groups.group_name AS group FROM domains".
2359 " INNER JOIN groups ON domains.group_id=groups.group_id".
2360 " WHERE domains.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2361 ($args{startwith} ? " AND domain ~* ?" : '').
2362 ($args{filter} ? " AND domain ~* ?" : '');
2363 } else {
2364##fixme: arguably startwith here is irrelevant. depends on the UI though.
2365 $args{sortby} = 'revnet' if !$args{sortby} || !grep /^$args{sortby}$/, ('revnet','group','status');
2366 $sql = "SELECT rdns_id AS zoneid,revnet AS zone,status,groups.group_name AS group FROM revzones".
2367 " INNER JOIN groups ON revzones.group_id=groups.group_id".
2368 " WHERE revzones.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2369 ($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2370# if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') {
2371 # Just In Case the UI is using formal .arpa notation, and someone enters something reversed,
2372 # we want to match both the formal and natural zone name
2373 $sql .= ($args{filter} ? " AND (CAST(revnet AS VARCHAR) ~* ? OR CAST(revnet AS VARCHAR) ~* ?)" : '');
2374 push @filterargs, join('[.]',reverse(split(/\[\.\]/,$args{filter}))) if $args{filter};
2375# } else {
2376# $sql .= ($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
2377# }
2378 }
2379 # A common tail.
2380 $sql .= " ORDER BY ".($args{sortby} eq 'group' ? 'groups.group_name' : $args{sortby})." $args{sortorder} ".
2381 ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage}".
2382 " OFFSET ".$args{offset}*$self->{perpage});
2383
2384 my @working;
2385 my $zsth = $dbh->prepare($sql);
2386 $zsth->execute(@filterargs);
2387 while (my $zone = $zsth->fetchrow_hashref) {
2388 if ($args{revrec} eq 'y' && ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all')) {
2389 my $tmp = new NetAddr::IP $zone->{zone};
2390 $zone->{zone} = DNSDB::_ZONE($tmp, 'ZONE', 'r', '.').($tmp->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
2391 }
2392 push @working, $zone;
2393 }
2394 return \@working;
2395} # end getZoneList()
2396
2397
2398## DNSDB::getZoneLocation()
2399# Retrieve the default location for a zone.
2400# Takes a database handle, forward/reverse flag, and zone ID
2401sub getZoneLocation {
2402 my $self = shift;
2403 my $dbh = $self->{dbh};
2404 my $revrec = shift;
2405 my $zoneid = shift;
2406
2407 my ($loc) = $dbh->selectrow_array("SELECT default_location FROM ".
2408 ($revrec eq 'n' ? 'domains WHERE domain_id = ?' : 'revzones WHERE rdns_id = ?'),
2409 undef, ($zoneid));
2410 return $loc;
2411} # end getZoneLocation()
2412
2413
2414## DNSDB::addGroup()
2415# Add a group
2416# Takes a database handle, group name, parent group, hashref for permissions,
2417# and optional template-vs-cloneme flag for the default records
2418# Returns a status code and message
2419sub addGroup {
2420 $errstr = '';
2421 my $self = shift;
2422 my $dbh = $self->{dbh};
2423 my $groupname = shift;
2424 my $pargroup = shift;
2425 my $permissions = shift;
2426
2427 # 0 indicates "custom", hardcoded.
2428 # Any other value clones that group's default records, if it exists.
2429 my $inherit = shift || 0;
2430##fixme: need a flag to indicate clone records or <?> ?
2431
2432 # Allow transactions, and raise an exception on errors so we can catch it later.
2433 # Use local to make sure these get "reset" properly on exiting this block
2434 local $dbh->{AutoCommit} = 0;
2435 local $dbh->{RaiseError} = 1;
2436
2437 my ($group_id) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($groupname));
2438
2439 return ('FAIL', "Group already exists") if $group_id;
2440
2441 # Wrap all the SQL in a transaction
2442 eval {
2443 $dbh->do("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)", undef, ($pargroup, $groupname) );
2444
2445 my ($groupid) = $dbh->selectrow_array("SELECT currval('groups_group_id_seq')");
2446
2447 # We work through the whole set of permissions instead of specifying them so
2448 # that when we add a new permission, we don't have to change the code anywhere
2449 # that doesn't explicitly deal with that specific permission.
2450 my @permvals;
2451 foreach (@permtypes) {
2452 if (!defined ($permissions->{$_})) {
2453 push @permvals, 0;
2454 } else {
2455 push @permvals, $permissions->{$_};
2456 }
2457 }
2458 $dbh->do("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")",
2459 undef, ($groupid, @permvals) );
2460 my ($permid) = $dbh->selectrow_array("SELECT currval('permissions_permission_id_seq')");
2461 $dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
2462
2463 # Default records
2464 my $sthf = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
2465 "VALUES ($groupid,?,?,?,?,?,?,?)");
2466 my $sthr = $dbh->prepare("INSERT INTO default_rev_records (group_id,host,type,val,ttl) ".
2467 "VALUES ($groupid,?,?,?,?)");
2468 if ($inherit) {
2469 # Duplicate records from parent. Actually relying on inherited records feels
2470 # very fragile, and it would be problematic to roll over at a later time.
2471 my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
2472 $sth2->execute($pargroup);
2473 while (my @clonedata = $sth2->fetchrow_array) {
2474 $sthf->execute(@clonedata);
2475 }
2476 # And now the reverse records
2477 $sth2 = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
2478 $sth2->execute($pargroup);
2479 while (my @clonedata = $sth2->fetchrow_array) {
2480 $sthr->execute(@clonedata);
2481 }
2482 } else {
2483##fixme: Hardcoding is Bad, mmmmkaaaay?
2484 # reasonable basic defaults for SOA, MX, NS, and minimal hosting
2485 # could load from a config file, but somewhere along the line we need hardcoded bits.
2486 $sthf->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
2487 $sthf->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
2488 $sthf->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
2489 $sthf->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
2490 $sthf->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
2491 $sthf->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
2492 # reasonable basic defaults for generic reverse zone. Same as initial SQL tabledef.
2493 $sthr->execute('hostmaster.ADMINDOMAIN:ns1.ADMINDOMAIN', 6, '10800:3600:604800:10800', 86400);
2494 $sthr->execute('unused-%r.ADMINDOMAIN', 65283, 'ZONE', 3600);
2495 }
2496
2497 $self->_log(group_id => $pargroup, entry => "Added group $groupname");
2498
2499 # once we get here, we should have suceeded.
2500 $dbh->commit;
2501 }; # end eval
2502
2503 if ($@) {
2504 my $msg = $@;
2505 eval { $dbh->rollback; };
2506 if ($self->{log_failures}) {
2507 $self->_log(group_id => $pargroup, entry => "Failed to add group $groupname: $msg");
2508 $dbh->commit;
2509 }
2510 return ('FAIL',$msg);
2511 }
2512
2513 return ('OK','OK');
2514} # end addGroup()
2515
2516
2517## DNSDB::delGroup()
2518# Delete a group.
2519# Takes a group ID
2520# Returns a status code and message
2521sub delGroup {
2522 my $self = shift;
2523 my $dbh = $self->{dbh};
2524 my $groupid = shift;
2525
2526 # Allow transactions, and raise an exception on errors so we can catch it later.
2527 # Use local to make sure these get "reset" properly on exiting this block
2528 local $dbh->{AutoCommit} = 0;
2529 local $dbh->{RaiseError} = 1;
2530
2531##fixme: locate "knowable" error conditions and deal with them before the eval
2532# ... or inside, whatever.
2533# -> domains still exist in group
2534# -> ...
2535 my $failmsg = '';
2536 my $resultmsg = '';
2537
2538 # collect some pieces for logging and error messages
2539 my $groupname = $self->groupName($groupid);
2540 my $parid = $self->parentID(id => $groupid, type => 'group');
2541
2542 # Wrap all the SQL in a transaction
2543 eval {
2544 # Check for Things in the group
2545 $failmsg = "Can't remove group $groupname";
2546 my ($grpcnt) = $dbh->selectrow_array("SELECT count(*) FROM groups WHERE parent_group_id=?", undef, ($groupid));
2547 die "$grpcnt groups still in group\n" if $grpcnt;
2548 my ($domcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($groupid));
2549 die "$domcnt domains still in group\n" if $domcnt;
2550 my ($revcnt) = $dbh->selectrow_array("SELECT count(*) FROM revzones WHERE group_id=?", undef, ($groupid));
2551 die "$revcnt reverse zones still in group\n" if $revcnt;
2552 my ($usercnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($groupid));
2553 die "$usercnt users still in group\n" if $usercnt;
2554
2555 $failmsg = "Failed to delete default records for $groupname";
2556 $dbh->do("DELETE from default_records WHERE group_id=?", undef, ($groupid));
2557 $failmsg = "Failed to delete default reverse records for $groupname";
2558 $dbh->do("DELETE from default_rev_records WHERE group_id=?", undef, ($groupid));
2559 $failmsg = "Failed to remove group $groupname";
2560 $dbh->do("DELETE from groups WHERE group_id=?", undef, ($groupid));
2561
2562 $self->_log(group_id => $parid, entry => "Deleted group $groupname");
2563 $resultmsg = "Deleted group $groupname";
2564
2565 # once we get here, we should have suceeded.
2566 $dbh->commit;
2567 }; # end eval
2568
2569 if ($@) {
2570 my $msg = $@;
2571 eval { $dbh->rollback; };
2572 if ($self->{log_failures}) {
2573 $self->_log(group_id => $parid, entry => "$failmsg: $msg");
2574 $dbh->commit; # since we enabled transactions earlier
2575 }
2576 return ('FAIL',"$failmsg: $msg");
2577 }
2578
2579 return ('OK',$resultmsg);
2580} # end delGroup()
2581
2582
2583## DNSDB::getChildren()
2584# Get a list of all groups whose parent^n is group <n>
2585# Takes a database handle, group ID, reference to an array to put the group IDs in,
2586# and an optional flag to return only immediate children or all children-of-children
2587# default to returning all children
2588# Calls itself
2589sub getChildren {
2590 $errstr = '';
2591 my $self = shift;
2592 my $dbh = $self->{dbh};
2593 my $rootgroup = shift;
2594 my $groupdest = shift;
2595 my $immed = shift || 'all';
2596
2597 # special break for default group; otherwise we get stuck.
2598 if ($rootgroup == 1) {
2599 # by definition, group 1 is the Root Of All Groups
2600 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
2601 ($immed ne 'all' ? " AND parent_group_id=1" : '')." ORDER BY group_name");
2602 $sth->execute;
2603 while (my @this = $sth->fetchrow_array) {
2604 push @$groupdest, @this;
2605 }
2606 } else {
2607 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=? ORDER BY group_name");
2608 $sth->execute($rootgroup);
2609 return if $sth->rows == 0;
2610 my @grouplist;
2611 while (my ($group) = $sth->fetchrow_array) {
2612 push @$groupdest, $group;
2613 $self->getChildren($group, $groupdest) if $immed eq 'all';
2614 }
2615 }
2616} # end getChildren()
2617
2618
2619## DNSDB::groupName()
2620# Return the group name based on a group ID
2621# Takes a database handle and the group ID
2622# Returns the group name or undef on failure
2623sub groupName {
2624 $errstr = '';
2625 my $self = shift;
2626 my $dbh = $self->{dbh};
2627 my $groupid = shift;
2628 my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
2629 $sth->execute($groupid);
2630 my ($groupname) = $sth->fetchrow_array();
2631 $errstr = $DBI::errstr if !$groupname;
2632 return $groupname if $groupname;
2633} # end groupName
2634
2635
2636## DNSDB::getGroupCount()
2637# Get count of subgroups in group or groups
2638# Takes a database handle and hash containing:
2639# - the "current" group
2640# - an array of "acceptable" groups
2641# - Optionally accept a "starts with" and/or "contains" filter argument
2642# Returns an integer count of the resulting group list.
2643sub getGroupCount {
2644 my $self = shift;
2645 my $dbh = $self->{dbh};
2646
2647 my %args = @_;
2648
2649 # Fail on bad curgroup argument. There's no sane fallback on this one.
2650 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2651 $errstr = "Bad or missing curgroup argument";
2652 return;
2653 }
2654 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2655 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2656 $errstr = "Bad childlist argument";
2657 return;
2658 }
2659
2660 my @filterargs;
2661 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2662 push @filterargs, "^$args{startwith}" if $args{startwith};
2663 push @filterargs, $args{filter} if $args{filter};
2664
2665 my $sql = "SELECT count(*) FROM groups ".
2666 "WHERE parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2667 ($args{startwith} ? " AND group_name ~* ?" : '').
2668 ($args{filter} ? " AND group_name ~* ?" : '');
2669 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
2670 $errstr = $dbh->errstr if !$count;
2671 return $count;
2672} # end getGroupCount
2673
2674
2675## DNSDB::getGroupList()
2676# Get a list of sub^n-groups in the specified group(s)
2677# Takes the same arguments as getGroupCount() above
2678# Returns an arrayref containing hashrefs suitable for feeding straight to HTML::Template
2679sub getGroupList {
2680 my $self = shift;
2681 my $dbh = $self->{dbh};
2682
2683 my %args = @_;
2684
2685 # Fail on bad curgroup argument. There's no sane fallback on this one.
2686 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2687 $errstr = "Bad or missing curgroup argument";
2688 return;
2689 }
2690 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2691 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2692 $errstr = "Bad childlist argument";
2693 return;
2694 }
2695
2696 my @filterargs;
2697 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2698 push @filterargs, "^$args{startwith}" if $args{startwith};
2699 push @filterargs, $args{filter} if $args{filter};
2700
2701 # protection against bad or missing arguments
2702 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
2703 $args{sortby} = 'group' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/;
2704 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2705
2706 # munge sortby for columns in database
2707 $args{sortby} = 'g.group_name' if $args{sortby} eq 'group';
2708 $args{sortby} = 'g2.group_name' if $args{sortby} eq 'parent';
2709
2710 my $sql = q(SELECT g.group_id AS groupid, g.group_name AS groupname, g2.group_name AS pgroup
2711 FROM groups g
2712 INNER JOIN groups g2 ON g2.group_id=g.parent_group_id
2713 ).
2714 " WHERE g.parent_group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2715 ($args{startwith} ? " AND g.group_name ~* ?" : '').
2716 ($args{filter} ? " AND g.group_name ~* ?" : '').
2717 " GROUP BY g.group_id, g.group_name, g2.group_name ".
2718 " ORDER BY $args{sortby} $args{sortorder} ".
2719 ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage});
2720 my $glist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
2721 $errstr = $dbh->errstr if !$glist;
2722
2723 # LEFT JOINs make the result set balloon beyond sanity just to include counts;
2724 # this means there's lots of crunching needed to trim the result set back down.
2725 # So instead we track the order of the groups, and push the counts into the
2726 # arrayref result separately.
2727##fixme: put this whole sub in a transaction? might be
2728# needed for accurate results on very busy systems.
2729##fixme: large group lists need prepared statements?
2730#my $ucsth = $dbh->prepare("SELECT count(*) FROM users WHERE group_id=?");
2731#my $dcsth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?");
2732#my $rcsth = $dbh->prepare("SELECT count(*) FROM revzones WHERE group_id=?");
2733 foreach (@{$glist}) {
2734 my ($ucnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($$_{groupid}));
2735 $$_{nusers} = $ucnt;
2736 my ($dcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($$_{groupid}));
2737 $$_{ndomains} = $dcnt;
2738 my ($rcnt) = $dbh->selectrow_array("SELECT count(*) FROM revzones WHERE group_id=?", undef, ($$_{groupid}));
2739 $$_{nrevzones} = $rcnt;
2740 }
2741
2742 return $glist;
2743} # end getGroupList
2744
2745
2746## DNSDB::groupID()
2747# Return the group ID based on the group name
2748# Takes a database handle and the group name
2749# Returns the group ID or undef on failure
2750sub groupID {
2751 $errstr = '';
2752 my $self = shift;
2753 my $dbh = $self->{dbh};
2754 my $group = shift;
2755 my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($group) );
2756 $errstr = $DBI::errstr if !$grpid;
2757 return $grpid if $grpid;
2758} # end groupID()
2759
2760
2761## DNSDB::addUser()
2762# Add a user.
2763# Takes a DB handle, username, group ID, password, state (active/inactive).
2764# Optionally accepts:
2765# user type (user/admin) - defaults to user
2766# permissions string - defaults to inherit from group
2767# three valid forms:
2768# i - Inherit permissions
2769# c:<user_id> - Clone permissions from <user_id>
2770# C:<permission list> - Set these specific permissions
2771# first name - defaults to username
2772# last name - defaults to blank
2773# phone - defaults to blank (could put other data within column def)
2774# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
2775sub addUser {
2776 $errstr = '';
2777 my $self = shift;
2778 my $dbh = $self->{dbh};
2779 my $username = shift;
2780 my $group = shift;
2781 my $pass = shift;
2782 my $state = shift;
2783
2784 return ('FAIL', "Missing one or more required entries") if !defined($state);
2785 return ('FAIL', "Username must not be blank") if !$username;
2786
2787 # Munge in some alternate state values
2788 $state = 1 if $state =~ /^active$/;
2789 $state = 1 if $state =~ /^on$/;
2790 $state = 0 if $state =~ /^inactive$/;
2791 $state = 0 if $state =~ /^off$/;
2792
2793 my $type = shift || 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
2794
2795 my $permstring = shift || 'i'; # default is to inhert permissions from group
2796
2797 my $fname = shift || $username;
2798 my $lname = shift || '';
2799 my $phone = shift || ''; # not going format-check
2800
2801 my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
2802 my $user_id;
2803
2804# quick check to start to see if we've already got one
2805 $sth->execute($username);
2806 ($user_id) = $sth->fetchrow_array;
2807
2808 return ('FAIL', "User already exists") if $user_id;
2809
2810 # Allow transactions, and raise an exception on errors so we can catch it later.
2811 # Use local to make sure these get "reset" properly on exiting this block
2812 local $dbh->{AutoCommit} = 0;
2813 local $dbh->{RaiseError} = 1;
2814
2815 # Wrap all the SQL in a transaction
2816 eval {
2817 # insert the user... note we set inherited perms by default since
2818 # it's simple and cleans up some other bits of state
2819##fixme: need better handling of case of inherited or missing (!!) permissions entries
2820 my $sth = $dbh->prepare("INSERT INTO users ".
2821 "(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
2822 "VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
2823 $sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
2824
2825 # get the ID...
2826 ($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
2827
2828# Permissions! Gotta set'em all!
2829 die "Invalid permission string $permstring\n"
2830 if $permstring !~ /^(?:
2831 i # inherit
2832 |c:\d+ # clone
2833 # custom. no, the leading , is not a typo
2834 |C:(?:,(?:group|user|domain|record|location|self)_(?:edit|create|delete|locchg|view))*
2835 )$/x;
2836# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
2837 if ($permstring ne 'i') {
2838 # for cloned or custom permissions, we have to create a new permissions entry.
2839 my $clonesrc = $group;
2840 if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
2841 $dbh->do("INSERT INTO permissions ($permlist,user_id) ".
2842 "SELECT $permlist,? FROM permissions WHERE permission_id=".
2843 "(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
2844 undef, ($user_id,$clonesrc) );
2845 $dbh->do("UPDATE users SET permission_id=".
2846 "(SELECT permission_id FROM permissions WHERE user_id=?) ".
2847 "WHERE user_id=?", undef, ($user_id, $user_id) );
2848 }
2849 if ($permstring =~ /^C:/) {
2850 # finally for custom permissions, we set the passed-in permissions (and unset
2851 # any that might have been brought in by the clone operation above)
2852 my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
2853 undef, ($user_id) );
2854 foreach (@permtypes) {
2855 if ($permstring =~ /,$_/) {
2856 $dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
2857 } else {
2858 $dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
2859 }
2860 }
2861 }
2862
2863 $dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
2864
2865##fixme: add another table to hold name/email for log table?
2866
2867 $self->_log(group_id => $group, entry => "Added user $username ($fname $lname)");
2868 # once we get here, we should have suceeded.
2869 $dbh->commit;
2870 }; # end eval
2871
2872 if ($@) {
2873 my $msg = $@;
2874 eval { $dbh->rollback; };
2875 if ($self->{log_failures}) {
2876 $self->_log(group_id => $group, entry => "Error adding user $username: $msg");
2877 $dbh->commit; # since we enabled transactions earlier
2878 }
2879 return ('FAIL',"Error adding user $username: $msg");
2880 }
2881
2882 return ('OK',"User $username ($fname $lname) added");
2883} # end addUser
2884
2885
2886## DNSDB::getUserCount()
2887# Get count of users in group
2888# Takes a database handle and hash containing at least the current group, and optionally:
2889# - a reference list of secondary groups
2890# - a filter string
2891# - a "Starts with" string
2892sub getUserCount {
2893 my $self = shift;
2894 my $dbh = $self->{dbh};
2895
2896 my %args = @_;
2897
2898 # Fail on bad curgroup argument. There's no sane fallback on this one.
2899 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2900 $errstr = "Bad or missing curgroup argument";
2901 return;
2902 }
2903 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2904 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2905 $errstr = "Bad childlist argument";
2906 return;
2907 }
2908
2909 my @filterargs;
2910 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2911 push @filterargs, "^$args{startwith}" if $args{startwith};
2912 push @filterargs, $args{filter} if $args{filter};
2913
2914 my $sql = "SELECT count(*) FROM users ".
2915 "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2916 ($args{startwith} ? " AND username ~* ?" : '').
2917 ($args{filter} ? " AND username ~* ?" : '');
2918 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
2919 $errstr = $dbh->errstr if !$count;
2920 return $count;
2921} # end getUserCount()
2922
2923
2924## DNSDB::getUserList()
2925# Get list of users
2926# Takes the same arguments as getUserCount() above, plus optional:
2927# - sort field
2928# - sort order
2929# - offset/return-all-everything flag (defaults to $perpage records)
2930sub getUserList {
2931 my $self = shift;
2932 my $dbh = $self->{dbh};
2933
2934 my %args = @_;
2935
2936 # Fail on bad curgroup argument. There's no sane fallback on this one.
2937 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
2938 $errstr = "Bad or missing curgroup argument";
2939 return;
2940 }
2941 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
2942 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
2943 $errstr = "Bad childlist argument";
2944 return;
2945 }
2946
2947 my @filterargs;
2948 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
2949 push @filterargs, "^$args{startwith}" if $args{startwith};
2950 push @filterargs, $args{filter} if $args{filter};
2951
2952 # better to request sorts on "simple" names, but it means we need to map it to real columns
2953 my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status',
2954 fname => 'fname');
2955 $args{sortby} = $sortmap{$args{sortby}};
2956
2957 # protection against bad or missing arguments
2958 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
2959 $args{sortby} = 'u.username' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/;
2960 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
2961
2962 my $sql = "SELECT u.user_id, u.username, u.firstname || ' ' || u.lastname AS fname, u.type, g.group_name, u.status ".
2963 "FROM users u ".
2964 "INNER JOIN groups g ON u.group_id=g.group_id ".
2965 "WHERE u.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
2966 ($args{startwith} ? " AND u.username ~* ?" : '').
2967 ($args{filter} ? " AND u.username ~* ?" : '').
2968 " AND NOT u.type = 'R' ".
2969 " ORDER BY $args{sortby} $args{sortorder} ".
2970 ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage});
2971 my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
2972 $errstr = $dbh->errstr if !$ulist;
2973 return $ulist;
2974} # end getUserList()
2975
2976
2977## DNSDB::getUserDropdown()
2978# Get a list of usernames for use in a dropdown menu.
2979# Takes a database handle, current group, and optional "tag this as selected" flag.
2980# Returns a reference to a list of hashrefs suitable to feeding to HTML::Template
2981sub getUserDropdown {
2982 my $self = shift;
2983 my $dbh = $self->{dbh};
2984 my $grp = shift;
2985 my $sel = shift || 0;
2986
2987 my $sth = $dbh->prepare("SELECT username,user_id FROM users WHERE group_id=?");
2988 $sth->execute($grp);
2989
2990 my @userlist;
2991 while (my ($username,$uid) = $sth->fetchrow_array) {
2992 my %row = (
2993 username => $username,
2994 uid => $uid,
2995 selected => ($sel == $uid ? 1 : 0)
2996 );
2997 push @userlist, \%row;
2998 }
2999 return \@userlist;
3000} # end getUserDropdown()
3001
3002
3003## DNSDB:: updateUser()
3004# Update general data about user
3005sub updateUser {
3006 my $self = shift;
3007 my $dbh = $self->{dbh};
3008
3009##fixme: tweak calling convention so that we can update any given bit of data
3010 my $uid = shift;
3011 my $username = shift;
3012 my $group = shift;
3013 my $pass = shift;
3014 my $state = shift;
3015 my $type = shift || 'u';
3016 my $fname = shift || $username;
3017 my $lname = shift || '';
3018 my $phone = shift || ''; # not going format-check
3019
3020 my $resultmsg = '';
3021
3022 # Munge in some alternate state values
3023 $state = 1 if $state =~ /^active$/;
3024 $state = 1 if $state =~ /^on$/;
3025 $state = 0 if $state =~ /^inactive$/;
3026 $state = 0 if $state =~ /^off$/;
3027
3028 # Allow transactions, and raise an exception on errors so we can catch it later.
3029 # Use local to make sure these get "reset" properly on exiting this block
3030 local $dbh->{AutoCommit} = 0;
3031 local $dbh->{RaiseError} = 1;
3032
3033 my $sth;
3034
3035 # Password can be left blank; if so we assume there's one on file.
3036 # Actual blank passwords are bad, mm'kay?
3037 if (!$pass) {
3038 ($pass) = $dbh->selectrow_array("SELECT password FROM users WHERE user_id=?", undef, ($uid));
3039 } else {
3040 $pass = unix_md5_crypt($pass);
3041 }
3042
3043 eval {
3044 $dbh->do("UPDATE users SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?".
3045 " WHERE user_id=?", undef, ($username, $pass, $fname, $lname, $phone, $type, $state, $uid));
3046 $resultmsg = "Updated user info for $username ($fname $lname)";
3047 $self->_log(group_id => $group, entry => $resultmsg);
3048 $dbh->commit;
3049 };
3050 if ($@) {
3051 my $msg = $@;
3052 eval { $dbh->rollback; };
3053 if ($self->{log_failures}) {
3054 $self->_log(group_id => $group, entry => "Error updating user $username: $msg");
3055 $dbh->commit; # since we enabled transactions earlier
3056 }
3057 return ('FAIL',"Error updating user $username: $msg");
3058 }
3059
3060 return ('OK',$resultmsg);
3061} # end updateUser()
3062
3063
3064## DNSDB::delUser()
3065# Delete a user.
3066# Takes a database handle and user ID
3067# Returns a success/failure code and matching message
3068sub delUser {
3069 my $self = shift;
3070 my $dbh = $self->{dbh};
3071 my $userid = shift;
3072
3073 return ('FAIL',"Bad userid") if !defined($userid);
3074
3075 my $userdata = $self->getUserData($userid);
3076
3077 # Allow transactions, and raise an exception on errors so we can catch it later.
3078 # Use local to make sure these get "reset" properly on exiting this block
3079 local $dbh->{AutoCommit} = 0;
3080 local $dbh->{RaiseError} = 1;
3081
3082 eval {
3083 $dbh->do("DELETE FROM users WHERE user_id=?", undef, ($userid));
3084 $self->_log(group_id => $userdata->{group_id},
3085 entry => "Deleted user ID $userid/".$userdata->{username}.
3086 " (".$userdata->{firstname}." ".$userdata->{lastname}.")");
3087 $dbh->commit;
3088 };
3089 if ($@) {
3090 my $msg = $@;
3091 eval { $dbh->rollback; };
3092 if ($self->{log_failures}) {
3093 $self->_log(group_id => $userdata->{group_id}, entry => "Error deleting user ID ".
3094 "$userid/".$userdata->{username}.": $msg");
3095 $dbh->commit;
3096 }
3097 return ('FAIL',"Error deleting user $userid/".$userdata->{username}.": $msg");
3098 }
3099
3100 return ('OK',"Deleted user ".$userdata->{username}." (".$userdata->{firstname}." ".$userdata->{lastname}.")");
3101} # end delUser
3102
3103
3104## DNSDB::userFullName()
3105# Return a pretty string!
3106# Takes a user_id and optional printf-ish string to indicate which pieces where:
3107# %u for the username
3108# %f for the first name
3109# %l for the last name
3110# All other text in the passed string will be left as-is.
3111##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
3112sub userFullName {
3113 $errstr = '';
3114 my $self = shift;
3115 my $dbh = $self->{dbh};
3116 my $userid = shift;
3117 my $fullformat = shift || '%f %l (%u)';
3118 my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
3119 $sth->execute($userid);
3120 my ($uname,$fname,$lname) = $sth->fetchrow_array();
3121 $errstr = $DBI::errstr if !$uname;
3122
3123 $fullformat =~ s/\%u/$uname/g;
3124 $fullformat =~ s/\%f/$fname/g;
3125 $fullformat =~ s/\%l/$lname/g;
3126
3127 return $fullformat;
3128} # end userFullName
3129
3130
3131## DNSDB::userStatus()
3132# Sets and/or returns a user's status
3133# Takes a database handle, user ID and optionally a status argument
3134# Returns undef on errors.
3135sub userStatus {
3136 my $self = shift;
3137 my $dbh = $self->{dbh};
3138 my $id = shift;
3139 my $newstatus = shift || 'mu';
3140
3141 return undef if $id !~ /^\d+$/;
3142
3143 my $userdata = $self->getUserData($id);
3144
3145 # Allow transactions, and raise an exception on errors so we can catch it later.
3146 # Use local to make sure these get "reset" properly on exiting this block
3147 local $dbh->{AutoCommit} = 0;
3148 local $dbh->{RaiseError} = 1;
3149
3150 if ($newstatus ne 'mu') {
3151 # ooo, fun! let's see what we were passed for status
3152 eval {
3153 $newstatus = 0 if $newstatus eq 'useroff';
3154 $newstatus = 1 if $newstatus eq 'useron';
3155 $dbh->do("UPDATE users SET status=? WHERE user_id=?", undef, ($newstatus, $id));
3156
3157 $resultstr = ($newstatus ? 'Enabled' : 'Disabled')." user ".$userdata->{username}.
3158 " (".$userdata->{firstname}." ".$userdata->{lastname}.")";
3159
3160 my %loghash;
3161 $loghash{group_id} = $self->parentID(id => $id, type => 'user');
3162 $loghash{entry} = $resultstr;
3163 $self->_log(%loghash);
3164
3165 $dbh->commit;
3166 };
3167 if ($@) {
3168 my $msg = $@;
3169 eval { $dbh->rollback; };
3170 $resultstr = '';
3171 $errstr = $msg;
3172##fixme: failure logging?
3173 return;
3174 }
3175 }
3176
3177 my ($status) = $dbh->selectrow_array("SELECT status FROM users WHERE user_id=?", undef, ($id));
3178 return $status;
3179} # end userStatus()
3180
3181
3182## DNSDB::getUserData()
3183# Get misc user data for display
3184sub getUserData {
3185 my $self = shift;
3186 my $dbh = $self->{dbh};
3187 my $uid = shift;
3188
3189 my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
3190 "FROM users WHERE user_id=?");
3191 $sth->execute($uid);
3192 return $sth->fetchrow_hashref();
3193} # end getUserData()
3194
3195
3196## DNSDB::addLoc()
3197# Add a new location.
3198# Takes a database handle, group ID, short and long description, and a comma-separated
3199# list of IP addresses.
3200# Returns ('OK',<location>) on success, ('FAIL',<failmsg>) on failure
3201sub addLoc {
3202 my $self = shift;
3203 my $dbh = $self->{dbh};
3204 my $grp = shift;
3205 my $shdesc = shift;
3206 my $comments = shift;
3207 my $iplist = shift;
3208
3209 # $shdesc gets set to the generated location ID if possible, but these can be de-undefined here.
3210 $comments = '' if !$comments;
3211 $iplist = '' if !$iplist;
3212
3213 my $loc;
3214
3215 # Generate a location ID. This is, by spec, a two-character widget. We'll use [a-z][a-z]
3216 # for now; 676 locations should satisfy all but the largest of the huge networks.
3217 # Not sure whether these are case-sensitive, or what other rules might apply - in any case
3218 # the absolute maximum is 16K (256*256) since it's parsed by tinydns as a two-character field.
3219
3220# add just after "my $origloc = $loc;":
3221# # These expand the possible space from 26^2 to 52^2 [* note in testing only 2052 were achieved],
3222# # and wrap it around.
3223# # Yes, they skip a couple of possibles. No, I don't care.
3224# $loc = 'aA' if $loc eq 'zz';
3225# $loc = 'Aa' if $loc eq 'zZ';
3226# $loc = 'ZA' if $loc eq 'Zz';
3227# $loc = 'aa' if $loc eq 'ZZ';
3228
3229 # Allow transactions, and raise an exception on errors so we can catch it later.
3230 # Use local to make sure these get "reset" properly on exiting this block
3231 local $dbh->{AutoCommit} = 0;
3232 local $dbh->{RaiseError} = 1;
3233
3234##fixme: There is probably a far better way to do this. Sequential increments
3235# are marginally less stupid that pure random generation though, and the existence
3236# check makes sure we don't stomp on an imported one.
3237
3238 eval {
3239 # Get the "last" location. Note this is the only use for loc_id, because selecting on location Does Funky Things
3240 ($loc) = $dbh->selectrow_array("SELECT location FROM locations ORDER BY loc_id DESC LIMIT 1");
3241 ($loc) = ($loc =~ /^(..)/) if $loc;
3242 my $origloc = $loc;
3243 $loc = 'aa' if !$loc;
3244 # Make a change...
3245 $loc++;
3246 # ... and keep changing if it exists
3247 while ($dbh->selectrow_array("SELECT count(*) FROM locations WHERE location LIKE ?", undef, ($loc.'%'))) {
3248 $loc++;
3249 ($loc) = ($loc =~ /^(..)/);
3250 die "too many locations in use, can't add another one\n" if $loc eq $origloc;
3251##fixme: really need to handle this case faster somehow
3252#if $loc eq $origloc die "<thwap> bad admin: all locations used, your network is too fragmented";
3253 }
3254 # And now we should have a unique location. tinydns fundamentally limits the
3255 # number of these but there's no doc on what characters are valid.
3256 $shdesc = $loc if !$shdesc;
3257 $dbh->do("INSERT INTO locations (location, group_id, iplist, description, comments) VALUES (?,?,?,?,?)",
3258 undef, ($loc, $grp, $iplist, $shdesc, $comments) );
3259 $self->_log(entry => "Added location ($shdesc, '$iplist')");
3260 $dbh->commit;
3261 };
3262 if ($@) {
3263 my $msg = $@;
3264 eval { $dbh->rollback; };
3265 if ($self->{log_failures}) {
3266 $shdesc = $loc if !$shdesc;
3267 $self->_log(entry => "Failed adding location ($shdesc, '$iplist'): $msg");
3268 $dbh->commit;
3269 }
3270 return ('FAIL',$msg);
3271 }
3272
3273 return ('OK',$loc);
3274} # end addLoc()
3275
3276
3277## DNSDB::updateLoc()
3278# Update details of a location.
3279# Takes a database handle, location ID, group ID, short description,
3280# long comments/notes, and comma/space-separated IP list
3281# Returns a result code and message
3282sub updateLoc {
3283 my $self = shift;
3284 my $dbh = $self->{dbh};
3285 my $loc = shift;
3286 my $grp = shift;
3287 my $shdesc = shift;
3288 my $comments = shift;
3289 my $iplist = shift;
3290
3291 $shdesc = '' if !$shdesc;
3292 $comments = '' if !$comments;
3293 $iplist = '' if !$iplist;
3294
3295 # Allow transactions, and raise an exception on errors so we can catch it later.
3296 # Use local to make sure these get "reset" properly on exiting this block
3297 local $dbh->{AutoCommit} = 0;
3298 local $dbh->{RaiseError} = 1;
3299
3300 my $oldloc = $self->getLoc($loc);
3301 my $okmsg = "Updated location (".$oldloc->{description}.", '".$oldloc->{iplist}."') to ($shdesc, '$iplist')";
3302
3303 eval {
3304 $dbh->do("UPDATE locations SET group_id=?,iplist=?,description=?,comments=? WHERE location=?",
3305 undef, ($grp, $iplist, $shdesc, $comments, $loc) );
3306 $self->_log(entry => $okmsg);
3307 $dbh->commit;
3308 };
3309 if ($@) {
3310 my $msg = $@;
3311 eval { $dbh->rollback; };
3312 if ($self->{log_failures}) {
3313 $shdesc = $loc if !$shdesc;
3314 $self->_log(entry => "Failed updating location ($shdesc, '$iplist'): $msg");
3315 $dbh->commit;
3316 }
3317 return ('FAIL',$msg);
3318 }
3319
3320 return ('OK',$okmsg);
3321} # end updateLoc()
3322
3323
3324## DNSDB::delLoc()
3325sub delLoc {
3326 my $self = shift;
3327 my $dbh = $self->{dbh};
3328 my $loc = shift;
3329
3330 # Allow transactions, and raise an exception on errors so we can catch it later.
3331 # Use local to make sure these get "reset" properly on exiting this block
3332 local $dbh->{AutoCommit} = 0;
3333 local $dbh->{RaiseError} = 1;
3334
3335 my $oldloc = $self->getLoc($loc);
3336 my $olddesc = ($oldloc->{description} ? $oldloc->{description} : $loc);
3337 my $okmsg = "Deleted location ($olddesc, '".$oldloc->{iplist}."')";
3338
3339 eval {
3340 # Check for records with this location first. Deleting a location without deleting records
3341 # tagged for that location will render them unpublished without other warning.
3342 my ($r) = $dbh->selectrow_array("SELECT record_id FROM records WHERE location=? LIMIT 1", undef, ($loc) );
3343 die "Records still exist in location $olddesc\n" if $r;
3344 $dbh->do("DELETE FROM locations WHERE location=?", undef, ($loc) );
3345 $self->_log(entry => $okmsg);
3346 $dbh->commit;
3347 };
3348 if ($@) {
3349 my $msg = $@;
3350 eval { $dbh->rollback; };
3351 if ($self->{log_failures}) {
3352 $self->_log(entry => "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg");
3353 $dbh->commit;
3354 }
3355 return ('FAIL', "Failed to delete location ($olddesc, '$oldloc->{iplist}'): $msg");
3356 }
3357
3358 return ('OK',$okmsg);
3359} # end delLoc()
3360
3361
3362## DNSDB::getLoc()
3363# Get details about a location/view
3364# Takes a database handle and location ID.
3365# Returns a reference to a hash containing the group ID, IP list, description, and comments/notes
3366sub getLoc {
3367 my $self = shift;
3368 my $dbh = $self->{dbh};
3369 my $loc = shift;
3370
3371 my $sth = $dbh->prepare("SELECT group_id,iplist,description,comments FROM locations WHERE location=?");
3372 $sth->execute($loc);
3373 return $sth->fetchrow_hashref();
3374} # end getLoc()
3375
3376
3377## DNSDB::getLocCount()
3378# Get count of locations/views
3379# Takes a database handle and hash containing at least the current group, and optionally:
3380# - a reference list of secondary groups
3381# - a filter string
3382# - a "Starts with" string
3383sub getLocCount {
3384 my $self = shift;
3385 my $dbh = $self->{dbh};
3386
3387 my %args = @_;
3388
3389 # Fail on bad curgroup argument. There's no sane fallback on this one.
3390 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
3391 $errstr = "Bad or missing curgroup argument";
3392 return;
3393 }
3394 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
3395 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
3396 $errstr = "Bad childlist argument";
3397 return;
3398 }
3399
3400 my @filterargs;
3401 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
3402 push @filterargs, "^$args{startwith}" if $args{startwith};
3403 push @filterargs, $args{filter} if $args{filter};
3404
3405 my $sql = "SELECT count(*) FROM locations ".
3406 "WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
3407 ($args{startwith} ? " AND description ~* ?" : '').
3408 ($args{filter} ? " AND description ~* ?" : '');
3409 my ($count) = $dbh->selectrow_array($sql, undef, (@filterargs) );
3410 $errstr = $dbh->errstr if !$count;
3411 return $count;
3412} # end getLocCount()
3413
3414
3415## DNSDB::getLocList()
3416sub getLocList {
3417 my $self = shift;
3418 my $dbh = $self->{dbh};
3419
3420 my %args = @_;
3421
3422 # Fail on bad curgroup argument. There's no sane fallback on this one.
3423 if (!$args{curgroup} || $args{curgroup} !~ /^\d+$/) {
3424 $errstr = "Bad or missing curgroup argument";
3425 return;
3426 }
3427 # Fail on bad childlist argument. This could be sanely ignored if bad, maybe.
3428 if ($args{childlist} && $args{childlist} !~ /^[\d,]+$/) {
3429 $errstr = "Bad childlist argument";
3430 return;
3431 }
3432
3433 my @filterargs;
3434 $args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]|0-9)$/;
3435 push @filterargs, "^$args{startwith}" if $args{startwith};
3436 push @filterargs, $args{filter} if $args{filter};
3437
3438 # better to request sorts on "simple" names, but it means we need to map it to real columns
3439# my %sortmap = (user => 'u.username', type => 'u.type', group => 'g.group_name', status => 'u.status',
3440# fname => 'fname');
3441# $args{sortby} = $sortmap{$args{sortby}};
3442
3443 # protection against bad or missing arguments
3444 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
3445 $args{sortby} = 'l.description' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/;
3446 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
3447
3448 my $sql = "SELECT l.location, l.description, l.iplist, g.group_name ".
3449 "FROM locations l ".
3450 "INNER JOIN groups g ON l.group_id=g.group_id ".
3451 "WHERE l.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
3452 ($args{startwith} ? " AND l.description ~* ?" : '').
3453 ($args{filter} ? " AND l.description ~* ?" : '').
3454 " ORDER BY $args{sortby} $args{sortorder} ".
3455 ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage});
3456 my $ulist = $dbh->selectall_arrayref($sql, { Slice => {} }, (@filterargs) );
3457 $errstr = $dbh->errstr if !$ulist;
3458 return $ulist;
3459} # end getLocList()
3460
3461
3462## DNSDB::getLocDropdown()
3463# Get a list of location names for use in a dropdown menu.
3464# Takes a database handle, current group, and optional "tag this as selected" flag.
3465# Returns a reference to a list of hashrefs suitable to feeding to HTML::Template
3466sub getLocDropdown {
3467 my $self = shift;
3468 my $dbh = $self->{dbh};
3469 my $grp = shift;
3470 my $sel = shift || '';
3471
3472 my $sth = $dbh->prepare(qq(
3473 SELECT description,location FROM locations
3474 WHERE group_id=?
3475 ORDER BY description
3476 ) );
3477 $sth->execute($grp);
3478
3479 my @loclist;
3480 push @loclist, { locname => "(Default/All)", loc => '', selected => ($sel ? 0 : ($sel eq '' ? 1 : 0)) };
3481 while (my ($locname, $loc) = $sth->fetchrow_array) {
3482 my %row = (
3483 locname => $locname,
3484 loc => $loc,
3485 selected => ($sel eq $loc ? 1 : 0)
3486 );
3487 push @loclist, \%row;
3488 }
3489 return \@loclist;
3490} # end getLocDropdown()
3491
3492
3493## DNSDB::getSOA()
3494# Return all suitable fields from an SOA record in separate elements of a hash
3495# Takes a database handle, default/live flag, domain/reverse flag, and parent ID
3496sub getSOA {
3497 $errstr = '';
3498 my $self = shift;
3499 my $dbh = $self->{dbh};
3500 my $def = shift;
3501 my $rev = shift;
3502 my $id = shift;
3503
3504 # (ab)use distance and weight columns to store SOA data? can't for default_rev_records...
3505 # - should really attach serial to the zone parent somewhere
3506
3507 my $sql = "SELECT record_id,host,val,ttl from "._rectable($def,$rev).
3508 " WHERE "._recparent($def,$rev)." = ? AND type=$reverse_typemap{SOA}";
3509 my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
3510 return if !$ret;
3511##fixme: stick a flag somewhere if the record doesn't exist. by the API, this is an impossible case, but...
3512
3513 ($ret->{contact},$ret->{prins}) = split /:/, $ret->{host};
3514 delete $ret->{host};
3515 ($ret->{refresh},$ret->{retry},$ret->{expire},$ret->{minttl}) = split /:/, $ret->{val};
3516 delete $ret->{val};
3517
3518 return $ret;
3519} # end getSOA()
3520
3521
3522## DNSDB::updateSOA()
3523# Update the specified SOA record
3524# Takes a database handle, default/live flag, forward/reverse flag, and SOA data hash
3525# Returns a two-element list with a result code and message
3526sub updateSOA {
3527 my $self = shift;
3528 my $dbh = $self->{dbh};
3529 my $defrec = shift;
3530 my $revrec = shift;
3531
3532 my %soa = @_;
3533
3534 my $oldsoa = $self->getSOA($defrec, $revrec, $soa{id});
3535
3536 my $msg;
3537 my %logdata;
3538 if ($defrec eq 'n') {
3539 $logdata{domain_id} = $soa{id} if $revrec eq 'n';
3540 $logdata{rdns_id} = $soa{id} if $revrec eq 'y';
3541 $logdata{group_id} = $self->parentID(id => $soa{id}, revrec => $revrec,
3542 type => ($revrec eq 'n' ? 'domain' : 'revzone') );
3543 } else {
3544 $logdata{group_id} = $soa{id};
3545 }
3546 my $parname = ($defrec eq 'y' ? $self->groupName($soa{id}) :
3547 ($revrec eq 'n' ? $self->domainName($soa{id}) : $self->revName($soa{id})) );
3548
3549 # Allow transactions, and raise an exception on errors so we can catch it later.
3550 # Use local to make sure these get "reset" properly on exiting this block
3551 local $dbh->{AutoCommit} = 0;
3552 local $dbh->{RaiseError} = 1;
3553
3554 eval {
3555 if (!$oldsoa) {
3556 # old SOA record is missing for some reason. create a new one.
3557 my $sql = "INSERT INTO "._rectable($defrec, $revrec)." ("._recparent($defrec, $revrec).
3558 ", host, type, val, ttl) VALUES (?,?,6,?,?)";
3559 $dbh->do($sql, undef, ($soa{id}, "$soa{contact}:$soa{prins}",
3560 "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}", $soa{ttl}) );
3561 $msg = ($defrec eq 'y' ? ($revrec eq 'y' ? 'Default reverse ' : 'Default ') : '').
3562 "SOA missing for $parname; added (ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},".
3563 " retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})";
3564 } else {
3565 my $sql = "UPDATE "._rectable($defrec, $revrec)." SET host=?, val=?, ttl=? WHERE record_id=? AND type=6";
3566 $dbh->do($sql, undef, ("$soa{contact}:$soa{prins}", "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}",
3567 $soa{ttl}, $oldsoa->{record_id}) );
3568 $msg = "Updated ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse ' : 'default ') : '').
3569 "SOA for $parname: ".
3570 "(ns $oldsoa->{prins}, contact $oldsoa->{contact}, refresh $oldsoa->{refresh},".
3571 " retry $oldsoa->{retry}, expire $oldsoa->{expire}, minTTL $oldsoa->{minttl}, TTL $oldsoa->{ttl}) to ".
3572 "(ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},".
3573 " retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})";
3574 }
3575 $logdata{entry} = $msg;
3576 $self->_log(%logdata);
3577
3578 $dbh->commit;
3579 };
3580 if ($@) {
3581 $msg = $@;
3582 eval { $dbh->rollback; };
3583 $logdata{entry} = "Error updating ".($defrec eq 'y' ? ($revrec eq 'y' ? 'default reverse zone ' : 'default ') : '').
3584 "SOA record for $parname: $msg";
3585 if ($self->{log_failures}) {
3586 $self->_log(%logdata);
3587 $dbh->commit;
3588 }
3589 return ('FAIL', $logdata{entry});
3590 } else {
3591 return ('OK', $msg);
3592 }
3593} # end updateSOA()
3594
3595
3596## DNSDB::getRecLine()
3597# Return all data fields for a zone record in separate elements of a hash
3598# Takes a database handle, default/live flag, forward/reverse flag, and record ID
3599sub getRecLine {
3600 $errstr = '';
3601 my $self = shift;
3602 my $dbh = $self->{dbh};
3603 my $defrec = shift;
3604 my $revrec = shift;
3605 my $id = shift;
3606
3607##fixme: do we need a knob to twist to switch between unix epoch and postgres time string?
3608 my $sql = "SELECT record_id,host,type,val,ttl".
3609 ($defrec eq 'n' ? ',location' : '').
3610 ($revrec eq 'n' ? ',distance,weight,port' : '').
3611 (($defrec eq 'y') ? ',group_id FROM ' : ',domain_id,rdns_id,stamp,stamp < now() AS ispast,expires,stampactive FROM ').
3612 _rectable($defrec,$revrec)." WHERE record_id=?";
3613 my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
3614
3615 if ($dbh->err) {
3616 $errstr = $DBI::errstr;
3617 return undef;
3618 }
3619
3620 if (!$ret) {
3621 $errstr = "No such record";
3622 return undef;
3623 }
3624
3625 # explicitly set a parent id
3626 if ($defrec eq 'y') {
3627 $ret->{parid} = $ret->{group_id};
3628 } else {
3629 $ret->{parid} = (($revrec eq 'n') ? $ret->{domain_id} : $ret->{rdns_id});
3630 # and a secondary if we have a custom type that lives in both a forward and reverse zone
3631 $ret->{secid} = (($revrec eq 'y') ? $ret->{domain_id} : $ret->{rdns_id}) if $ret->{type} > 65279;
3632 }
3633 $ret->{address} = $ret->{val}; # because.
3634
3635 return $ret;
3636}
3637
3638
3639##fixme: should use above (getRecLine()) to get lines for below?
3640## DNSDB::getRecList()
3641# Return records for a group or zone
3642# Takes a default/live flag, group or zone ID, start,
3643# number of records, sort field, and sort order
3644# Returns a reference to an array of hashes
3645sub getRecList {
3646 $errstr = '';
3647 my $self = shift;
3648 my $dbh = $self->{dbh};
3649
3650 my %args = @_;
3651
3652 # protection against bad or missing arguments
3653 $args{sortorder} = 'ASC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
3654 my $defsort;
3655 $defsort = 'host' if $args{revrec} eq 'n'; # default sort by host on domain record list
3656 $defsort = 'val' if $args{revrec} eq 'y'; # default sort by IP on revzone record list
3657 $args{sortby} = '' if !$args{sortby};
3658 $args{sortby} = $defsort if !$args{revrec};
3659 $args{sortby} = $defsort if $args{sortby} !~ /^[\w_,.]+$/;
3660 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
3661 my $perpage = ($args{nrecs} ? $args{nrecs} : $self->{perpage});
3662
3663 # sort reverse zones on IP, correctly
3664 # do other fiddling with $args{sortby} while we're at it.
3665 # whee! multisort means just passing comma-separated fields in sortby!
3666 my $newsort = '';
3667 foreach my $sf (split /,/, $args{sortby}) {
3668 $sf = "r.$sf";
3669 $sf =~ s/r\.val/inetlazy(r.val)/
3670 if $args{revrec} eq 'y' && $args{defrec} eq 'n';
3671 $sf =~ s/r\.type/t.alphaorder/;
3672 $newsort .= ",$sf";
3673 }
3674 $newsort =~ s/^,//;
3675
3676 my @bindvars = ($args{id});
3677 push @bindvars, ($args{filter},$args{filter}) if $args{filter};
3678
3679##fixme: do we need a knob to twist to switch from unix epoch to postgres time string?
3680 my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.ttl";
3681 $sql .= ",l.description AS locname,stamp,r.stamp < now() AS ispast,r.expires,r.stampactive"
3682 if $args{defrec} eq 'n';
3683 $sql .= ",r.distance,r.weight,r.port" if $args{revrec} eq 'n';
3684 $sql .= " FROM "._rectable($args{defrec},$args{revrec})." r ";
3685 $sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
3686 $sql .= "LEFT JOIN locations l ON r.location=l.location " if $args{defrec} eq 'n';
3687 $sql .= "WHERE "._recparent($args{defrec},$args{revrec})." = ?";
3688 $sql .= " AND NOT r.type=$reverse_typemap{SOA}";
3689# if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') {
3690 # Just In Case the UI is using formal .arpa notation, and someone enters something reversed,
3691 # we want to match both the formal and natural zone name
3692 $sql .= " AND (r.host ~* ? OR r.val ~* ? OR r.host ~* ? OR r.val ~* ?)" if $args{filter};
3693 my $tmp = join('.',reverse(split(/\./,$args{filter})));
3694 push @bindvars, ($tmp, $tmp) if $args{filter};
3695# } else {
3696# $sql .= " AND (r.host ~* ? OR r.val ~* ?)" if $args{filter};
3697# }
3698 $sql .= " ORDER BY $newsort $args{sortorder}";
3699 # ensure consistent ordering by sorting on record_id too
3700 $sql .= ", record_id $args{sortorder}";
3701 $sql .= ($args{offset} eq 'all' ? '' : " LIMIT $perpage OFFSET ".$args{offset}*$perpage);
3702
3703 my @working;
3704 my $recsth = $dbh->prepare($sql);
3705 $recsth->execute(@bindvars);
3706 while (my $rec = $recsth->fetchrow_hashref) {
3707 if ($args{revrec} eq 'y' && $args{defrec} eq 'n' &&
3708 ($self->{showrev_arpa} eq 'record' || $self->{showrev_arpa} eq 'all') ) {
3709##enhance: extend {showrev_arpa} eq 'record' to specify record types
3710 my $tmp = new NetAddr::IP $rec->{val};
3711 $rec->{val} = DNSDB::_ZONE($tmp, 'ZONE', 'r', '.').($tmp->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
3712 }
3713 push @working, $rec;
3714 }
3715 return \@working;
3716} # end getRecList()
3717
3718
3719## DNSDB::getRecCount()
3720# Return count of non-SOA records in zone (or default records in a group)
3721# Takes a database handle, default/live flag, reverse/forward flag, group/domain ID,
3722# and optional filtering modifier
3723# Returns the count
3724sub getRecCount {
3725 my $self = shift;
3726 my $dbh = $self->{dbh};
3727 my $defrec = shift;
3728 my $revrec = shift;
3729 my $id = shift;
3730 my $filter = shift || '';
3731
3732 # keep the nasties down, since we can't ?-sub this bit. :/
3733 # note this is chars allowed in DNS hostnames
3734 $filter =~ s/[^a-zA-Z0-9_.:-]//g;
3735
3736 my @bindvars = ($id);
3737 push @bindvars, ($filter,$filter) if $filter;
3738 my $sql = "SELECT count(*) FROM ".
3739 _rectable($defrec,$revrec).
3740 " WHERE "._recparent($defrec,$revrec)."=? ".
3741 "AND NOT type=$reverse_typemap{SOA}";
3742# if ($self->{showrev_arpa} eq 'zone' || $self->{showrev_arpa} eq 'all') {
3743 # Just In Case the UI is using formal .arpa notation, and someone enters something reversed,
3744 # we want to match both the formal and natural zone name
3745 $sql .= " AND (host ~* ? OR val ~* ? OR host ~* ? OR val ~* ?)" if $filter;
3746 my $tmp = join('.',reverse(split(/\./,$filter)));
3747 push @bindvars, ($tmp, $tmp) if $filter;
3748# } else {
3749# $sql .= " AND (host ~* ? OR val ~* ?)" if $filter;
3750# }
3751
3752 my ($count) = $dbh->selectrow_array($sql, undef, (@bindvars) );
3753
3754 return $count;
3755
3756} # end getRecCount()
3757
3758
3759## DNSDB::addRec()
3760# Add a new record to a domain or a group's default records
3761# Takes a database handle, default/live flag, group/domain ID,
3762# host, type, value, and TTL
3763# Some types require additional detail: "distance" for MX and SRV,
3764# and weight/port for SRV
3765# Returns a status code and detail message in case of error
3766##fixme: pass a hash with the record data, not a series of separate values
3767sub addRec {
3768 $errstr = '';
3769 my $self = shift;
3770 my $dbh = $self->{dbh};
3771 my $defrec = shift;
3772 my $revrec = shift;
3773 my $id = shift; # parent (group_id for defrecs, rdns_id for reverse records,
3774 # domain_id for domain records)
3775
3776 my $host = shift;
3777 my $rectype = shift; # reference so we can coerce it if "+"-types can't find both zones
3778 my $val = shift;
3779 my $ttl = shift;
3780 my $location = shift;
3781 $location = '' if !$location;
3782
3783 my $expires = shift;
3784 $expires = 1 if $expires eq 'until'; # Turn some special values into the appropriate booleans.
3785 $expires = 0 if $expires eq 'after';
3786 my $stamp = shift;
3787 $stamp = '' if !$stamp; # Timestamp should be a string at this point.
3788
3789 # Spaces are evil.
3790 $$host =~ s/^\s+//;
3791 $$host =~ s/\s+$//;
3792 if ($typemap{$$rectype} ne 'TXT') {
3793 # Leading or trailng spaces could be legit in TXT records.
3794 $$val =~ s/^\s+//;
3795 $$val =~ s/\s+$//;
3796 }
3797
3798 if ($self->{lowercase}) {
3799 if ($typemap{$$rectype} ne 'TXT') {
3800 $$host = lc($$host);
3801 $$val = lc($$val);
3802 } else {
3803 # TXT records should preserve user entry in the string.
3804 if ($revrec eq 'n') {
3805 $$host = lc($$host);
3806 } else {
3807 $$val = lc($$val);
3808 }
3809 }
3810 }
3811
3812 # prep for validation
3813 # Autodetect formal .arpa names
3814 if ($$val =~ /\.arpa\.?$/) {
3815 my ($code,$tmpval) = _zone2cidr($$val);
3816 return ('FAIL', $tmpval) if $code eq 'FAIL';
3817 $$val = $tmpval;
3818 }
3819 my $addr = NetAddr::IP->new($$val);
3820 $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
3821
3822 my $domid = 0;
3823 my $revid = 0;
3824
3825 my $retcode = 'OK'; # assume everything will go OK
3826 my $retmsg = '';
3827
3828 # do simple validation first
3829 return ('FAIL', "TTL must be numeric") unless $ttl =~ /^-?\d+$/;
3830
3831 # Quick check on hostname parts. There are enough variations to justify a sub now.
3832 return ('FAIL', $errstr) if ! _check_hostname_form($$host, $$rectype, $defrec, $revrec);
3833
3834 # Collect these even if we're only doing a simple A record so we can call *any* validation sub
3835 my $dist = shift;
3836 my $weight = shift;
3837 my $port = shift;
3838
3839 my $fields;
3840 my @vallist;
3841
3842 # Call the validation sub for the type requested.
3843 ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec, id => $id,
3844 host => $host, rectype => $rectype, val => $val, addr => $addr,
3845 dist => \$dist, port => \$port, weight => \$weight,
3846 fields => \$fields, vallist => \@vallist);
3847
3848 return ($retcode,$retmsg) if $retcode eq 'FAIL';
3849
3850 # Set up database fields and bind parameters
3851 $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
3852 push @vallist, ($$host,$$rectype,$$val,$ttl,$id);
3853
3854 if ($defrec eq 'n') {
3855 # locations are not for default records, silly coder!
3856 $fields .= ",location";
3857 push @vallist, $location;
3858 # timestamps are rare.
3859 if ($stamp) {
3860 $fields .= ",stamp,expires,stampactive";
3861 push @vallist, $stamp, $expires, 'y';
3862 } else {
3863 $fields .= ",stampactive";
3864 push @vallist, 'n';
3865 }
3866 }
3867
3868 # a little magic to get the right number of ? placeholders based on how many values we're providing
3869 my $vallen = '?'.(',?'x$#vallist);
3870
3871 # Put together the success log entry. We have to use this horrible kludge
3872 # because domain_id and rdns_id may or may not be present, and if they are,
3873 # they're not at a guaranteed consistent index in the array. wheee!
3874 my %logdata;
3875 my @ftmp = split /,/, $fields;
3876 for (my $i=0; $i <= $#vallist; $i++) {
3877 $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
3878 $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
3879 }
3880 $logdata{group_id} = $id if $defrec eq 'y';
3881 $logdata{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec)
3882 if $defrec eq 'n';
3883 $logdata{entry} = "Added ".($defrec eq 'y' ? 'default record' : 'record');
3884 # NS records for revzones get special treatment
3885 if ($revrec eq 'y' && $$rectype == 2) {
3886 $logdata{entry} .= " '$$val $typemap{$$rectype} $$host";
3887 } else {
3888 $logdata{entry} .= " '$$host $typemap{$$rectype} $$val";
3889 }
3890
3891 $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
3892 $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]"
3893 if $typemap{$$rectype} eq 'SRV';
3894 $logdata{entry} .= "', TTL $ttl";
3895 $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location;
3896 $logdata{entry} .= ($expires eq 'after' ? ', valid after ' : ', expires at ').$stamp if $stamp;
3897
3898 # Allow transactions, and raise an exception on errors so we can catch it later.
3899 # Use local to make sure these get "reset" properly on exiting this block
3900 local $dbh->{AutoCommit} = 0;
3901 local $dbh->{RaiseError} = 1;
3902
3903 eval {
3904 $dbh->do("INSERT INTO "._rectable($defrec, $revrec)." ($fields) VALUES ($vallen)",
3905 undef, @vallist);
3906 $self->_log(%logdata);
3907 $dbh->commit;
3908 };
3909 if ($@) {
3910 my $msg = $@;
3911 eval { $dbh->rollback; };
3912 if ($self->{log_failures}) {
3913 $logdata{entry} = "Failed adding ".($defrec eq 'y' ? 'default ' : '').
3914 "record '$$host $typemap{$$rectype} $$val', TTL $ttl ($msg)";
3915 $self->_log(%logdata);
3916 $dbh->commit;
3917 }
3918 return ('FAIL',$msg);
3919 }
3920
3921 $resultstr = $logdata{entry};
3922 return ($retcode, $retmsg);
3923
3924} # end addRec()
3925
3926
3927## DNSDB::updateRec()
3928# Update a record
3929# Takes a database handle, default and reverse flags, record ID, immediate parent ID, and new record data.
3930# Returns a status code and message
3931sub updateRec {
3932 $errstr = '';
3933
3934 my $self = shift;
3935 my $dbh = $self->{dbh};
3936 my $defrec = shift;
3937 my $revrec = shift;
3938 my $id = shift;
3939 my $parid = shift; # immediate parent entity that we're descending from to update the record
3940
3941 # all records have these
3942 my $host = shift;
3943 my $hostbk = $$host; # Keep a backup copy of the original, so we can WARN if the update mangles the domain
3944 my $rectype = shift;
3945 my $val = shift;
3946 my $ttl = shift;
3947 my $location = shift; # may be empty/null/undef depending on caller
3948 $location = '' if !$location;
3949
3950 my $expires = shift;
3951 $expires = 1 if $expires eq 'until'; # Turn some special values into the appropriate booleans.
3952 $expires = 0 if $expires eq 'after';
3953 my $stamp = shift;
3954 $stamp = '' if !$stamp; # Timestamp should be a string at this point.
3955
3956 # just set it to an empty string; failures will be caught later.
3957 $$host = '' if !$$host;
3958
3959 # Spaces are evil.
3960 $$host =~ s/^\s+//;
3961 $$host =~ s/\s+$//;
3962 if ($typemap{$$rectype} ne 'TXT') {
3963 # Leading or trailng spaces could be legit in TXT records.
3964 $$val =~ s/^\s+//;
3965 $$val =~ s/\s+$//;
3966 }
3967
3968 if ($self->{lowercase}) {
3969 if ($typemap{$$rectype} ne 'TXT') {
3970 $$host = lc($$host);
3971 $$val = lc($$val);
3972 } else {
3973 # TXT records should preserve user entry in the string.
3974 if ($revrec eq 'n') {
3975 $$host = lc($$host);
3976 } else {
3977 $$val = lc($$val);
3978 }
3979 }
3980 }
3981
3982 # prep for validation
3983 # Autodetect formal .arpa names
3984 if ($$val =~ /\.arpa\.?$/) {
3985 my ($code,$tmpval) = _zone2cidr($$val);
3986 return ('FAIL', $tmpval) if $code eq 'FAIL';
3987 $$val = $tmpval;
3988 }
3989 my $addr = NetAddr::IP->new($$val);
3990 $$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
3991
3992 my $domid = 0;
3993 my $revid = 0;
3994
3995 my $retcode = 'OK'; # assume everything will go OK
3996 my $retmsg = '';
3997
3998 # do simple validation first
3999 return ('FAIL', "TTL must be numeric") unless $ttl =~ /^-?\d+$/;
4000
4001 # Quick check on hostname parts. There are enough variations to justify a sub now.
4002 return ('FAIL', $errstr) if ! _check_hostname_form($$host, $$rectype, $defrec, $revrec);
4003
4004 # only MX and SRV will use these
4005 my $dist = shift || 0;
4006 my $weight = shift || 0;
4007 my $port = shift || 0;
4008
4009 my $fields;
4010 my @vallist;
4011
4012 # get old record data so we have the right parent ID
4013 # and for logging (eventually)
4014 my $oldrec = $self->getRecLine($defrec, $revrec, $id);
4015
4016 # Call the validation sub for the type requested.
4017 # Note the ID to pass here is the *parent*, not the record
4018 ($retcode,$retmsg) = $validators{$$rectype}($self, defrec => $defrec, revrec => $revrec,
4019 id => ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})),
4020 host => $host, rectype => $rectype, val => $val, addr => $addr,
4021 dist => \$dist, port => \$port, weight => \$weight,
4022 fields => \$fields, vallist => \@vallist,
4023 update => $id);
4024
4025 return ($retcode,$retmsg) if $retcode eq 'FAIL';
4026
4027 # Set up database fields and bind parameters. Note only the optional fields
4028 # (distance, weight, port, secondary parent ID) are added in the validation call above
4029 $fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
4030 push @vallist, ($$host,$$rectype,$$val,$ttl,
4031 ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})) );
4032
4033 if ($defrec eq 'n') {
4034 # locations are not for default records, silly coder!
4035 $fields .= ",location";
4036 push @vallist, $location;
4037 # timestamps are rare.
4038 if ($stamp) {
4039 $fields .= ",stamp,expires,stampactive";
4040 push @vallist, $stamp, $expires, 'y';
4041 } else {
4042 $fields .= ",stampactive";
4043 push @vallist, 'n';
4044 }
4045 }
4046
4047 # hack hack PTHUI
4048 # need to forcibly make sure we disassociate a record with a parent it's no longer related to.
4049 # eg, PTR records may not have a domain parent, or A/AAAA records may not have a revzone parent.
4050 # mainly needed for crossover types that got coerced down to "standard" types
4051 if ($defrec eq 'n') {
4052 if ($$rectype == $reverse_typemap{PTR}) {
4053 $fields .= ",domain_id";
4054 push @vallist, 0;
4055 }
4056 if ($$rectype == $reverse_typemap{A} || $$rectype == $reverse_typemap{AAAA}) {
4057 $fields .= ",rdns_id";
4058 push @vallist, 0;
4059 }
4060 }
4061 # fix fat-finger-originated record type changes
4062 if ($$rectype == 65285) {
4063 $fields .= ",rdns_id" if $revrec eq 'n';
4064 $fields .= ",domain_id" if $revrec eq 'y';
4065 push @vallist, 0;
4066 }
4067 if ($defrec eq 'n') {
4068 $domid = $parid if $revrec eq 'n';
4069 $revid = $parid if $revrec eq 'y';
4070 }
4071
4072 # Put together the success log entry. Horrible kludge from addRec() copied as-is since
4073 # we don't know whether the passed arguments or retrieved values for domain_id and rdns_id
4074 # will be maintained (due to "not-in-zone" validation changes)
4075 my %logdata;
4076 $logdata{domain_id} = $domid;
4077 $logdata{rdns_id} = $revid;
4078 my @ftmp = split /,/, $fields;
4079 for (my $i=0; $i <= $#vallist; $i++) {
4080 $logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
4081 $logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
4082 }
4083 $logdata{group_id} = $parid if $defrec eq 'y';
4084 $logdata{group_id} = $self->parentID(id => $parid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec)
4085 if $defrec eq 'n';
4086 $logdata{entry} = "Updated ".($defrec eq 'y' ? 'default record' : 'record')." from\n";
4087 # NS records for revzones get special treatment
4088 if ($revrec eq 'y' && $$rectype == 2) {
4089 $logdata{entry} .= " '$oldrec->{val} $typemap{$oldrec->{type}} $oldrec->{host}";
4090 } else {
4091 $logdata{entry} .= " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
4092 }
4093 $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
4094 $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
4095 if $typemap{$oldrec->{type}} eq 'SRV';
4096 $logdata{entry} .= "', TTL $oldrec->{ttl}";
4097 $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location};
4098 $logdata{entry} .= ($oldrec->{expires} ? ', expires at ' : ', valid after ').$oldrec->{stamp}
4099 if $oldrec->{stampactive};
4100 $logdata{entry} .= "\nto\n";
4101 # More NS special
4102 if ($revrec eq 'y' && $$rectype == 2) {
4103 $logdata{entry} .= "'$$val $typemap{$$rectype} $$host";
4104 } else {
4105 $logdata{entry} .= "'$$host $typemap{$$rectype} $$val";
4106 }
4107 $logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
4108 $logdata{entry} .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$$rectype} eq 'SRV';
4109 $logdata{entry} .= "', TTL $ttl";
4110 $logdata{entry} .= ", location ".$self->getLoc($location)->{description} if $location;
4111 $logdata{entry} .= ($expires eq 'after' ? ', valid after ' : ', expires at ').$stamp if $stamp;
4112
4113 local $dbh->{AutoCommit} = 0;
4114 local $dbh->{RaiseError} = 1;
4115
4116 # Fiddle the field list into something suitable for updates
4117 $fields =~ s/,/=?,/g;
4118 $fields .= "=?";
4119
4120 eval {
4121 $dbh->do("UPDATE "._rectable($defrec,$revrec)." SET $fields WHERE record_id=?", undef, (@vallist, $id) );
4122 $self->_log(%logdata);
4123 $dbh->commit;
4124 };
4125 if ($@) {
4126 my $msg = $@;
4127 eval { $dbh->rollback; };
4128 if ($self->{log_failures}) {
4129 $logdata{entry} = "Failed updating ".($defrec eq 'y' ? 'default ' : '').
4130 "record '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
4131 $self->_log(%logdata);
4132 $dbh->commit;
4133 }
4134 return ('FAIL', $msg);
4135 }
4136
4137 $resultstr = $logdata{entry};
4138 return ($retcode, $retmsg);
4139} # end updateRec()
4140
4141
4142## DNSDB::downconvert()
4143# A mostly internal (not exported) semiutilty sub to downconvert from pseudotype <x>
4144# to a compatible component type. Only a handful of operations are valid, anything
4145# else is a null-op.
4146# Takes the record ID and the new type. Returns boolean.
4147sub downconvert {
4148 my $self = shift;
4149 my $dbh = $self->{dbh};
4150 my $recid = shift;
4151 my $newtype = shift;
4152
4153 # also, only work on live records; little to no value trying to do this on default records.
4154 my $rec = $self->getRecLine('n', 'y', $recid);
4155
4156 # hm?
4157 #return 1 if !$rec;
4158
4159 return 1 if $rec->{type} < 65000; # Only the reverse-record pseudotypes can be downconverted
4160 return 1 if $rec->{type} == 65282; # Nowhere to go
4161
4162 my $delpar;
4163 my @sqlargs;
4164 if ($rec->{type} == 65280) {
4165 return 1 if $newtype != 1 && $newtype != 12;
4166 $delpar = ($newtype == 1 ? 'rdns_id' : 'domain_id');
4167 push @sqlargs, 0, $newtype, $recid;
4168 } elsif ($rec->{type} == 65281) {
4169 return 1 if $newtype != 28 && $newtype != 12;
4170 $delpar = ($newtype == 28 ? 'rdns_id' : 'domain_id');
4171 push @sqlargs, 0, $newtype, $recid;
4172 } elsif ($rec->{type} == 65283) {
4173 return 1 if $newtype != 65282;
4174 $delpar = 'rdns_id';
4175 } elsif ($rec->{type} == 65284) {
4176 return 1 if $newtype != 65282;
4177 $delpar = 'rdns_id';
4178 } else {
4179 # Your llama is on fire.
4180 }
4181
4182 local $dbh->{AutoCommit} = 0;
4183 local $dbh->{RaiseError} = 1;
4184
4185 eval {
4186 $dbh->do("UPDATE records SET $delpar = ?, type = ? WHERE record_id = ?", undef, @sqlargs);
4187 $dbh->commit;
4188 };
4189 if ($@) {
4190 $errstr = $@;
4191 eval { $dbh->rollback; };
4192 return 0;
4193 }
4194 return 1;
4195} # end downconvert()
4196
4197
4198## DNSDB::delRec()
4199# Delete a record.
4200sub delRec {
4201 $errstr = '';
4202 my $self = shift;
4203 my $dbh = $self->{dbh};
4204 my $defrec = shift;
4205 my $revrec = shift;
4206 my $id = shift;
4207
4208 my $oldrec = $self->getRecLine($defrec, $revrec, $id);
4209
4210 # Allow transactions, and raise an exception on errors so we can catch it later.
4211 # Use local to make sure these get "reset" properly on exiting this block
4212 local $dbh->{AutoCommit} = 0;
4213 local $dbh->{RaiseError} = 1;
4214
4215 # Put together the log entry
4216 my %logdata;
4217 $logdata{domain_id} = $oldrec->{domain_id};
4218 $logdata{rdns_id} = $oldrec->{rdns_id};
4219 $logdata{group_id} = $oldrec->{group_id} if $defrec eq 'y';
4220 $logdata{group_id} = $self->parentID(id => $oldrec->{domain_id}, type => ($revrec eq 'n' ? 'domain' : 'revzone'),
4221 revrec => $revrec)
4222 if $defrec eq 'n';
4223 $logdata{entry} = "Deleted ".($defrec eq 'y' ? 'default record ' : 'record ').
4224 "'$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
4225 $logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
4226 $logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
4227 if $typemap{$oldrec->{type}} eq 'SRV';
4228 $logdata{entry} .= "', TTL $oldrec->{ttl}";
4229 $logdata{entry} .= ", location ".$self->getLoc($oldrec->{location})->{description} if $oldrec->{location};
4230
4231 eval {
4232 my $sth = $dbh->do("DELETE FROM "._rectable($defrec,$revrec)." WHERE record_id=?", undef, ($id));
4233 $self->_log(%logdata);
4234 $dbh->commit;
4235 };
4236 if ($@) {
4237 my $msg = $@;
4238 eval { $dbh->rollback; };
4239 if ($self->{log_failures}) {
4240 $logdata{entry} = "Error deleting ".($defrec eq 'y' ? 'default record' : 'record').
4241 " '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
4242 $self->_log(%logdata);
4243 $dbh->commit;
4244 }
4245 return ('FAIL', $msg);
4246 }
4247
4248 return ('OK',$logdata{entry});
4249} # end delRec()
4250
4251
4252## DNSDB::getLogCount()
4253# Get a count of log entries
4254# Takes a database handle and a hash containing at least:
4255# - Entity ID and entity type as the primary log "slice"
4256sub getLogCount {
4257 my $self = shift;
4258 my $dbh = $self->{dbh};
4259
4260 my %args = @_;
4261
4262 my @filterargs;
4263##fixme: which fields do we want to filter on?
4264# push @filterargs,
4265
4266 $errstr = 'Missing primary parent ID and/or type';
4267 # fail early if we don't have a "prime" ID to look for log entries for
4268 return if !$args{id};
4269
4270 # or if the prime id type is missing or invalid
4271 return if !$args{logtype};
4272 $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui
4273 $args{logtype} = 'domain' if $args{logtype} eq 'dom'; # hack pthui
4274 return if !grep /^$args{logtype}$/, ('group', 'domain', 'revzone', 'user');
4275
4276 my $sql = "SELECT count(*) FROM log ".
4277 "WHERE $id_col{$args{logtype}}=?".
4278 ($args{filter} ? " AND entry ~* ?" : '');
4279 my ($count) = $dbh->selectrow_array($sql, undef, ($args{id}, @filterargs) );
4280 $errstr = $dbh->errstr if !$count;
4281 return $count;
4282} # end getLogCount()
4283
4284
4285## DNSDB::getLogEntries()
4286# Get a list of log entries
4287# Takes arguments as with getLogCount() above, plus optional:
4288# - sort field
4289# - sort order
4290# - offset for pagination
4291sub getLogEntries {
4292 my $self = shift;
4293 my $dbh = $self->{dbh};
4294
4295 my %args = @_;
4296
4297 my @filterargs;
4298
4299 # fail early if we don't have a "prime" ID to look for log entries for
4300 return if !$args{id};
4301
4302 # or if the prime id type is missing or invalid
4303 return if !$args{logtype};
4304 $args{logtype} = 'revzone' if $args{logtype} eq 'rdns'; # hack pthui
4305 $args{logtype} = 'domain' if $args{logtype} eq 'dom'; # hack pthui
4306 return if !grep /^$args{logtype}$/, ('group', 'domain', 'revzone', 'user');
4307
4308 # Sorting defaults
4309 $args{sortorder} = 'DESC' if !$args{sortorder} || !grep /^$args{sortorder}$/, ('ASC','DESC');
4310 $args{sortby} = 'stamp' if !$args{sortby} || $args{sortby} !~ /^[\w_.]+$/;
4311 $args{offset} = 0 if !$args{offset} || $args{offset} !~ /^(?:all|\d+)$/;
4312
4313 my %sortmap = (fname => 'name', username => 'email', entry => 'entry', stamp => 'stamp');
4314 $args{sortby} = $sortmap{$args{sortby}};
4315
4316 my $sql = "SELECT user_id AS userid, email AS useremail, name AS userfname, entry AS logentry, ".
4317 "date_trunc('second',stamp) AS logtime ".
4318 "FROM log ".
4319 "WHERE $id_col{$args{logtype}}=?".
4320 ($args{filter} ? " AND entry ~* ?" : '').
4321 " ORDER BY $args{sortby} $args{sortorder}, log_id $args{sortorder}".
4322 ($args{offset} eq 'all' ? '' : " LIMIT $self->{perpage} OFFSET ".$args{offset}*$self->{perpage});
4323 my $loglist = $dbh->selectall_arrayref($sql, { Slice => {} }, ($args{id}, @filterargs) );
4324 $errstr = $dbh->errstr if !$loglist;
4325 return $loglist;
4326} # end getLogEntries()
4327
4328
4329## IPDB::getRevPattern()
4330# Get the narrowest template pattern applicable to a passed CIDR address (may be a netblock or an IP)
4331sub getRevPattern {
4332 my $self = shift;
4333 my $dbh = $self->{dbh};
4334 my $cidr = shift;
4335 my $group = shift || 1; # just in case
4336
4337 # for speed! Casting and comparing even ~7K records takes ~2.5s, so narrow it down to one revzone first.
4338 my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >>= ? AND group_id = ?",
4339 undef, ($cidr, $group) );
4340
4341##fixme? may need to narrow things down more by octet-chopping and doing text comparisons before casting.
4342 my ($revpatt) = $dbh->selectrow_array("SELECT host FROM records ".
4343 "WHERE (type in (12,65280,65281,65282,65283,65284)) AND rdns_id = ? AND inetlazy(val) >>= ? ".
4344 "ORDER BY inetlazy(val) DESC LIMIT 1", undef, ($revid, $cidr) );
4345 return $revpatt;
4346} # end getRevPattern()
4347
4348
4349## DNSDB::getTypelist()
4350# Get a list of record types for various UI dropdowns
4351# Takes database handle, forward/reverse/lookup flag, and optional "tag as selected" indicator (defaults to A)
4352# Returns an arrayref to list of hashrefs perfect for HTML::Template
4353sub getTypelist {
4354 my $self = shift;
4355 my $dbh = $self->{dbh};
4356 my $recgroup = shift;
4357 my $type = shift || $reverse_typemap{A};
4358
4359 # also accepting $webvar{revrec}!
4360 $recgroup = 'f' if $recgroup eq 'n';
4361 $recgroup = 'r' if $recgroup eq 'y';
4362
4363 my $sql = "SELECT val,name FROM rectypes WHERE ";
4364 if ($recgroup eq 'r') {
4365 # reverse zone types
4366 $sql .= "stdflag=2 OR stdflag=3";
4367 } elsif ($recgroup eq 'l') {
4368 # DNS lookup types. Note we avoid our custom types >= 65280, since those are entirely internal.
4369 $sql .= "(stdflag=1 OR stdflag=2 OR stdflag=3) AND val < 65280";
4370 } else {
4371 # default; forward zone types. technically $type eq 'f' but not worth the error message.
4372 $sql .= "stdflag=1 OR stdflag=2";
4373 $sql .= " AND val < 65280" if $recgroup eq 'fo'; # An extra flag to trim off the pseudotypes as well.
4374 }
4375 $sql .= " ORDER BY listorder";
4376
4377 my $sth = $dbh->prepare($sql);
4378 $sth->execute;
4379 my @typelist;
4380 while (my ($rval,$rname) = $sth->fetchrow_array()) {
4381 my %row = ( recval => $rval, recname => $rname );
4382 $row{tselect} = 1 if $rval == $type;
4383 push @typelist, \%row;
4384 }
4385
4386 # Add SOA on lookups since it's not listed in other dropdowns.
4387 if ($recgroup eq 'l') {
4388 my %row = ( recval => $reverse_typemap{SOA}, recname => 'SOA' );
4389 $row{tselect} = 1 if $reverse_typemap{SOA} == $type;
4390 push @typelist, \%row;
4391 }
4392
4393 return \@typelist;
4394} # end getTypelist()
4395
4396
4397## DNSDB::parentID()
4398# Get ID of entity that is nearest parent to requested id
4399# Takes a database handle and a hash of entity ID, entity type, optional parent type flag
4400# (domain/reverse zone or group), and optional default/live and forward/reverse flags
4401# Returns the ID or undef on failure
4402sub parentID {
4403 my $self = shift;
4404 my $dbh = $self->{dbh};
4405
4406 my %args = @_;
4407
4408 # clean up the parent-type. Set it to group if not set; coerce revzone to domain for simpler logic
4409 $args{partype} = 'group' if !$args{partype};
4410 $args{partype} = 'domain' if $args{partype} eq 'revzone';
4411
4412 # clean up defrec and revrec. default to live record, forward zone
4413 $args{defrec} = 'n' if !$args{defrec};
4414 $args{revrec} = 'n' if !$args{revrec};
4415
4416 if ($par_type{$args{partype}} eq 'domain') {
4417 # only live records can have a domain/zone parent
4418 return unless ($args{type} eq 'record' && $args{defrec} eq 'n');
4419 my $result = $dbh->selectrow_hashref("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
4420 " FROM records WHERE record_id = ?",
4421 undef, ($args{id}) ) or return;
4422 return $result;
4423 } else {
4424 # snag some arguments that will either fall through or be overwritten to save some code duplication
4425 my $tmpid = $args{id};
4426 my $type = $args{type};
4427 if ($type eq 'record' && $args{defrec} eq 'n') {
4428 # Live records go through the records table first.
4429 ($tmpid) = $dbh->selectrow_array("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
4430 " FROM records WHERE record_id = ?",
4431 undef, ($args{id}) ) or return;
4432 $type = ($args{revrec} eq 'n' ? 'domain' : 'revzone');
4433 }
4434 my ($result) = $dbh->selectrow_array("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?",
4435 undef, ($tmpid) );
4436 return $result;
4437 }
4438# should be impossible to get here with even remotely sane arguments
4439 return;
4440} # end parentID()
4441
4442
4443## DNSDB::isParent()
4444# Returns true if $id1 is a parent of $id2, false otherwise
4445sub isParent {
4446 my $self = shift;
4447 my $dbh = $self->{dbh};
4448 my $id1 = shift;
4449 my $type1 = shift;
4450 my $id2 = shift;
4451 my $type2 = shift;
4452##todo: immediate, secondary, full (default)
4453
4454 # Return false on invalid types
4455 return 0 if !grep /^$type1$/, ('record','defrec','defrevrec','user','domain','revzone','group');
4456 return 0 if !grep /^$type2$/, ('record','defrec','defrevrec','user','domain','revzone','group');
4457
4458 # Return false on impossible relations
4459 return 0 if $type1 eq 'record'; # nothing may be a child of a record
4460 return 0 if $type1 eq 'defrec'; # nothing may be a child of a record
4461 return 0 if $type1 eq 'defrevrec'; # nothing may be a child of a record
4462 return 0 if $type1 eq 'user'; # nothing may be child of a user
4463 return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record
4464 return 0 if $type1 eq 'revzone' && $type2 ne 'record';# reverse zone may not be a parent of anything other than a record
4465
4466 # ennnhhhh.... if we're passed an id of 0, it will never be found. usual
4467 # case would be the UI creating a new <thing>, and so we don't have an ID for
4468 # <thing> to look up yet. in that case the UI should check the parent as well.
4469 return 0 if $id1 == 0; # nothing can have a parent id of 0
4470 return 1 if $id2 == 0; # anything could have a child id of 0 (or "unknown")
4471
4472 # group 1 is the ultimate root parent
4473 return 1 if $type1 eq 'group' && $id1 == 1;
4474
4475 # groups are always (a) parent of themselves
4476 return 1 if $type1 eq 'group' && $type2 eq 'group' && $id1 == $id2;
4477
4478 my $id = $id2;
4479 my $type = $type2;
4480 my $foundparent = 0;
4481
4482 # Records are the only entity with two possible parents. We need to split the parent checks on
4483 # domain/rdns.
4484 if ($type eq 'record') {
4485 my ($dom,$rdns) = $dbh->selectrow_array("SELECT domain_id,rdns_id FROM records WHERE record_id=?",
4486 undef, ($id));
4487 # check immediate parent against request
4488 return 1 if $type1 eq 'domain' && $id1 == $dom;
4489 return 1 if $type1 eq 'revzone' && $id1 == $rdns;
4490 # if request is group, check *both* parents. Only check if the parent is nonzero though.
4491 return 1 if $dom && $self->isParent($id1, $type1, $dom, 'domain');
4492 return 1 if $rdns && $self->isParent($id1, $type1, $rdns, 'revzone');
4493 # exit here since we've executed the loop below by proxy in the above recursive calls.
4494 return 0;
4495 }
4496
4497# almost the same loop as getParents() above
4498 my $limiter = 0;
4499 while (1) {
4500 my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?";
4501 my $result = $dbh->selectrow_hashref($sql,
4502 undef, ($id) );
4503 if (!$result) {
4504 $limiter++;
4505##fixme: how often will this happen on a live site? fail at max limiter <n>?
4506# 2013/10/22 only seems to happen when you request an entity that doesn't exist.
4507 warn "no results looking for $sql with id $id (depth $limiter)\n";
4508 last;
4509 }
4510 if ($result && $result->{$par_col{$type}} == $id1) {
4511 $foundparent = 1;
4512 last;
4513 } else {
4514##fixme: do we care about trying to return a "no such record/domain/user/group" error?
4515# should be impossible to create an inconsistent DB just with API calls.
4516 warn $dbh->errstr." $sql, $id" if $dbh->errstr;
4517 }
4518 # group 1 is its own parent. need this here more to break strange loops than for detecting a parent
4519 last if $result->{$par_col{$type}} == 1;
4520 $id = $result->{$par_col{$type}};
4521 $type = $par_type{$type};
4522 }
4523
4524 return $foundparent;
4525} # end isParent()
4526
4527
4528## DNSDB::zoneStatus()
4529# Returns and optionally sets a zone's status
4530# Takes a database handle, domain/revzone ID, forward/reverse flag, and optionally a status argument
4531# Returns status, or undef on errors.
4532sub zoneStatus {
4533 my $self = shift;
4534 my $dbh = $self->{dbh};
4535 my $id = shift;
4536 my $revrec = shift;
4537 my $newstatus = shift || 'mu';
4538
4539 return undef if $id !~ /^\d+$/;
4540
4541 # Allow transactions, and raise an exception on errors so we can catch it later.
4542 # Use local to make sure these get "reset" properly on exiting this block
4543 local $dbh->{AutoCommit} = 0;
4544 local $dbh->{RaiseError} = 1;
4545
4546 if ($newstatus ne 'mu') {
4547 # ooo, fun! let's see what we were passed for status
4548 eval {
4549 $newstatus = 0 if $newstatus eq 'domoff';
4550 $newstatus = 1 if $newstatus eq 'domon';
4551 $dbh->do("UPDATE ".($revrec eq 'n' ? 'domains' : 'revzones')." SET status=? WHERE ".
4552 ($revrec eq 'n' ? 'domain_id' : 'rdns_id')."=?", undef, ($newstatus,$id) );
4553
4554##fixme switch to more consise "Enabled <domain"/"Disabled <domain>" as with users?
4555 $resultstr = "Changed ".($revrec eq 'n' ? $self->domainName($id) : $self->revName($id)).
4556 " state to ".($newstatus ? 'active' : 'inactive');
4557
4558 my %loghash;
4559 $loghash{domain_id} = $id if $revrec eq 'n';
4560 $loghash{rdns_id} = $id if $revrec eq 'y';
4561 $loghash{group_id} = $self->parentID(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec);
4562 $loghash{entry} = $resultstr;
4563 $self->_log(%loghash);
4564
4565 $dbh->commit;
4566 };
4567 if ($@) {
4568 my $msg = $@;
4569 eval { $dbh->rollback; };
4570 $resultstr = '';
4571 $errstr = $msg;
4572 return;
4573 }
4574 }
4575
4576 my ($status) = $dbh->selectrow_array("SELECT status FROM ".
4577 ($revrec eq 'n' ? "domains WHERE domain_id=?" : "revzones WHERE rdns_id=?"),
4578 undef, ($id) );
4579 return $status;
4580} # end zoneStatus()
4581
4582
4583## DNSDB::getZonesByCIDR()
4584# Get a list of zone names and IDs that records for a passed CIDR block are within.
4585sub getZonesByCIDR {
4586 my $self = shift;
4587 my $dbh = $self->{dbh};
4588 my %args = @_;
4589
4590 my $result = $dbh->selectall_arrayref("SELECT rdns_id,revnet FROM revzones WHERE revnet >>= ? OR revnet <<= ?",
4591 { Slice => {} }, ($args{cidr}, $args{cidr}) );
4592 return $result;
4593} # end getZonesByCIDR()
4594
4595
4596## DNSDB::importAXFR
4597# Import a domain via AXFR
4598# Takes AXFR host, domain to transfer, group to put the domain in,
4599# and an optional hash containing:
4600# status - active/inactive state flag (defaults to active)
4601# rwsoa - overwrite-SOA flag (defaults to off)
4602# rwns - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
4603# merge - flag to automerge A or AAAA records with matching PTR records
4604# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
4605# if status is OK, but WARN includes conditions that are not fatal but should
4606# really be reported.
4607sub importAXFR {
4608 my $self = shift;
4609 my $dbh = $self->{dbh};
4610 my $ifrom_in = shift;
4611 my $zone = shift;
4612 my $group = shift;
4613
4614 my %args = @_;
4615
4616##fixme: add mode to delete&replace, merge+overwrite, merge new?
4617
4618 $args{status} = (defined($args{status}) ? $args{status} : 0);
4619 $args{status} = 1 if $args{status} eq 'on';
4620
4621 my $nrecs = 0;
4622 my $soaflag = 0;
4623 my $nsflag = 0;
4624 my $warnmsg = '';
4625 my $ifrom;
4626
4627 my $rev = 'n';
4628 my $code = 'OK';
4629 my $msg = 'foobar?';
4630
4631 # choke on possible bad setting in ifrom
4632 # IPv4 and v6, and valid hostnames!
4633 ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
4634 return ('FAIL', "Bad AXFR source host $ifrom")
4635 unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
4636
4637 my $errmsg;
4638
4639 my $zone_id;
4640 my $domain_id = 0;
4641 my $rdns_id = 0;
4642 my $cidr;
4643
4644# magic happens! detect if we're importing a domain or a reverse zone
4645# while we're at it, figure out what the CIDR netblock is (if we got a .arpa)
4646# or what the formal .arpa zone is (if we got a CIDR netblock)
4647# Handles sub-octet v4 zones in the format specified in the Cricket Book, 2nd Ed, p217-218
4648
4649 if ($zone =~ m{(?:\.arpa\.?|/\d+)$}) {
4650 # we seem to have a reverse zone
4651 $rev = 'y';
4652
4653 if ($zone =~ /\.arpa\.?$/) {
4654 # we have a formal reverse zone. call _zone2cidr and get the CIDR block.
4655 ($code,$msg) = _zone2cidr($zone);
4656 return ($code, $msg) if $code eq 'FAIL';
4657 $cidr = $msg;
4658 } elsif ($zone =~ m|^[\d.]+/\d+$|) {
4659 # v4 revzone, CIDR netblock
4660 $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block");
4661 $zone = _ZONE($cidr, 'ZONE.in-addr.arpa', 'r', '.');
4662 } elsif ($zone =~ m|^[a-fA-F\d:]+/\d+$|) {
4663 # v6 revzone, CIDR netblock
4664 $cidr = NetAddr::IP->new($zone) or return ('FAIL',"$zone is not a valid CIDR block");
4665 return ('FAIL', "$zone is not a nibble-aligned block") if $cidr->masklen % 4 != 0;
4666 $zone = _ZONE($cidr, 'ZONE.ip6.arpa', 'r', '.');
4667 } else {
4668 # there is. no. else!
4669 return ('FAIL', "Unknown zone name format");
4670 }
4671
4672 # quick check to start to see if we've already got one
4673
4674 ($zone_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?",
4675 undef, ("$cidr"));
4676 $rdns_id = $zone_id;
4677 } else {
4678 # default to domain
4679 ($zone_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE lower(domain) = lower(?)",
4680 undef, ($zone));
4681 $domain_id = $zone_id;
4682 }
4683
4684 return ('FAIL', ($rev eq 'n' ? 'Domain' : 'Reverse zone')." already exists") if $zone_id;
4685
4686 # little local utility sub to swap $val and $host for revzone records.
4687 sub _revswap {
4688 my $rechost = shift;
4689 my $recdata = shift;
4690
4691 if ($rechost =~ /\.in-addr\.arpa\.?$/) {
4692 $rechost =~ s/\.in-addr\.arpa\.?$//;
4693 $rechost = join '.', reverse split /\./, $rechost;
4694 } else {
4695 $rechost =~ s/\.ip6\.arpa\.?$//;
4696 my @nibs = reverse split /\./, $rechost;
4697 $rechost = '';
4698 my $nc;
4699 foreach (@nibs) {
4700 $rechost.= $_;
4701 $rechost .= ":" if ++$nc % 4 == 0 && $nc < 32;
4702 }
4703 $rechost .= ":" if $nc < 32 && $rechost !~ /\*$/; # close netblock records?
4704##fixme: there's a case that ends up with a partial entry here:
4705# ip:add:re:ss::
4706# can't reproduce after letting it sit overnight after discovery. :(
4707#print "$rechost\n";
4708 # canonicalize with NetAddr::IP
4709 $rechost = NetAddr::IP->new($rechost)->addr unless $rechost =~ /\*$/;
4710 }
4711 return ($recdata,$rechost)
4712 }
4713
4714
4715 # Allow transactions, and raise an exception on errors so we can catch it later.
4716 # Use local to make sure these get "reset" properly on exiting this block
4717 local $dbh->{AutoCommit} = 0;
4718 local $dbh->{RaiseError} = 1;
4719
4720 my $sth;
4721 eval {
4722
4723 if ($rev eq 'n') {
4724##fixme: serial
4725 $dbh->do("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)", undef,
4726 ($zone, $group, $args{status}) );
4727 # get domain id so we can do the records
4728 ($zone_id) = $dbh->selectrow_array("SELECT currval('domains_domain_id_seq')");
4729 $domain_id = $zone_id;
4730 $self->_log(group_id => $group, domain_id => $domain_id,
4731 entry => "[Added ".($args{status} ? 'active' : 'inactive')." domain $zone via AXFR]");
4732 } else {
4733##fixme: serial
4734 $dbh->do("INSERT INTO revzones (revnet,group_id,status) VALUES (?,?,?)", undef,
4735 ($cidr,$group,$args{status}) );
4736 # get revzone id so we can do the records
4737 ($zone_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')");
4738 $rdns_id = $zone_id;
4739 $self->_log(group_id => $group, rdns_id => $rdns_id,
4740 entry => "[Added ".($args{status} ? 'active' : 'inactive')." reverse zone $cidr via AXFR]");
4741 }
4742
4743## bizarre DBI<->Net::DNS interaction bug:
4744## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
4745## fixed, apparently I was doing *something* odd, but not certain what it was that
4746## caused a commit instead of barfing
4747
4748 my $res = Net::DNS::Resolver->new;
4749 $res->nameservers($ifrom);
4750 $res->axfr_start($zone)
4751 or die "Couldn't begin AXFR\n";
4752
4753 $sth = $dbh->prepare("INSERT INTO records (domain_id,rdns_id,host,type,val,distance,weight,port,ttl)".
4754 " VALUES (?,?,?,?,?,?,?,?,?)");
4755
4756 # Stash info about sub-octet v4 revzones here so we don't have
4757 # to store the CNAMEs used to delegate a suboctet zone
4758 # $suboct{zone}{ns}[] -> array of nameservers
4759 # $suboct{zone}{cname}[] -> array of extant CNAMEs (Just In Case someone did something bizarre)
4760## commented pending actual use of this data. for now, we'll just
4761## auto-(re)create the CNAMEs in revzones on export
4762# my %suboct;
4763
4764 while (my $rr = $res->axfr_next()) {
4765
4766 # Discard out-of-zone records. After trying for a while to replicate this with
4767 # *nix-based DNS servers, it appears that only MS DNS is prone to including these
4768 # in the AXFR data in the first place, and possibly only older versions at that...
4769 # so it can't be reasonably tested. Yay Microsoft.
4770 if ($rr->name !~ /$zone$/i) {
4771 $warnmsg .= "Discarding out-of-zone record ".$rr->string."\n";
4772 }
4773
4774 my $val;
4775 my $distance = 0;
4776 my $weight = 0;
4777 my $port = 0;
4778 my $logfrag = '';
4779
4780 my $type = $rr->type;
4781 my $host = $rr->name;
4782 my $ttl = ($args{newttl} ? $args{newttl} : $rr->ttl); # allow force-override TTLs
4783
4784 $soaflag = 1 if $type eq 'SOA';
4785 $nsflag = 1 if $type eq 'NS';
4786
4787# "Primary" types:
4788# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
4789# maybe KEY
4790
4791# BIND supports:
4792# [standard]
4793# A AAAA CNAME MX NS PTR SOA TXT
4794# [variously experimental, obsolete, or obscure]
4795# 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
4796# ... if one can ever find the right magic to format them correctly
4797
4798# Net::DNS supports:
4799# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
4800# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
4801# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
4802
4803# nasty big ugly case-like thing here, since we have to do *some* different
4804# processing depending on the record. le sigh.
4805
4806##fixme: what record types other than TXT can/will have >255-byte payloads?
4807
4808 if ($type eq 'A') {
4809 $val = $rr->address;
4810 } elsif ($type eq 'NS') {
4811# hmm. should we warn here if subdomain NS'es are left alone?
4812 if ($rev eq 'y') {
4813 # revzones have records more or less reversed from forward zones.
4814 my ($tmpcode,$tmpmsg) = _zone2cidr($host);
4815 die "Error converting NS record: $tmpmsg\n" if $tmpcode eq 'FAIL'; # hmm. may not make sense...
4816 next if ($args{rwns} && ($tmpmsg eq "$cidr"));
4817 $val = "$tmpmsg";
4818 $host = $rr->nsdname;
4819 $logfrag = "Added record '$val $type $host', TTL $ttl";
4820# Tag and preserve. For now this is commented for a no-op, but we have Ideas for
4821# another custom storage type ("DELEGATE") that will use these subzone-delegation records
4822#if ($val ne "$cidr") {
4823# push @{$suboct{$val}{ns}}, $host;
4824#}
4825 } else {
4826 next if ($args{rwns} && ($rr->name eq $zone));
4827 $val = $rr->nsdname;
4828 }
4829 $nsflag = 1;
4830 } elsif ($type eq 'CNAME') {
4831 if ($rev eq 'y') {
4832 # hmm. do we even want to bother with storing these at this level? Sub-octet delegation
4833 # by CNAME is essentially a record-publication hack, and we want to just represent the
4834 # "true" logical intentions as far down the stack as we can from the UI.
4835 ($host,$val) = _revswap($host,$rr->cname);
4836 $logfrag = "Added record '$val $type $host', TTL $ttl";
4837# Tag and preserve in case we want to commit them as-is later, but mostly we don't care.
4838# Commented pending actually doing something with possibly new type DELEGATE
4839#my $tmprev = $host;
4840#$tmprev =~ s/^\d+\.//;
4841#($code,$tmprev) = _zone2cidr($tmprev);
4842#push @{$suboct{"$tmprev"}{cname}}, $val;
4843 # Silently skip CNAMEs in revzones.
4844 next;
4845 } else {
4846 $val = $rr->cname;
4847 }
4848 } elsif ($type eq 'SOA') {
4849 next if $args{rwsoa};
4850 $host = $rr->rname.":".$rr->mname;
4851 $val = $rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum;
4852 $soaflag = 1;
4853 } elsif ($type eq 'PTR') {
4854 ($host,$val) = _revswap($host,$rr->ptrdname);
4855 $logfrag = "Added record '$val $type $host', TTL $ttl";
4856 # hmm. PTR records should not be in forward zones.
4857 } elsif ($type eq 'MX') {
4858 $val = $rr->exchange;
4859 $distance = $rr->preference;
4860 } elsif ($type eq 'TXT') {
4861##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
4862## but don't really seem enthusiastic about it.
4863#print "should use rdatastr:\n\t".$rr->rdatastr."\n or char_str_list:\n\t".join(' ',$rr->char_str_list())."\n";
4864# rdatastr returns a BIND-targetted logical string, including opening and closing quotes
4865# char_str_list returns a list of the individual string fragments in the record
4866# txtdata returns the more useful all-in-one form (since we want to push such protocol
4867# details as far down the stack as we can)
4868# NB: this may turn out to be more troublesome if we ever have need of >512-byte TXT records.
4869 if ($rev eq 'y') {
4870 ($host,$val) = _revswap($host,$rr->txtdata);
4871 $logfrag = "Added record '$val $type $host', TTL $ttl";
4872 } else {
4873 $val = $rr->txtdata;
4874 }
4875 } elsif ($type eq 'SPF') {
4876##fixme: and the same caveat here, since it is apparently a clone of ::TXT
4877 $val = $rr->txtdata;
4878 } elsif ($type eq 'AAAA') {
4879 $val = $rr->address;
4880 } elsif ($type eq 'SRV') {
4881 $val = $rr->target;
4882 $distance = $rr->priority;
4883 $weight = $rr->weight;
4884 $port = $rr->port;
4885 } elsif ($type eq 'KEY') {
4886 # we don't actually know what to do with these...
4887 $val = $rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname;
4888 } else {
4889 $val = $rr->rdatastr;
4890 # Finding a different record type is not fatal.... just problematic.
4891 # We may not be able to export it correctly.
4892 $warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
4893 }
4894
4895 my $logentry = "[AXFR ".($rev eq 'n' ? $zone : $cidr)."] ";
4896
4897 if ($args{merge}) {
4898 if ($rev eq 'n') {
4899 # importing a domain; we have A and AAAA records that could be merged with matching PTR records
4900 my $etype;
4901 my ($erdns,$erid,$ettl) = $dbh->selectrow_array("SELECT rdns_id,record_id,ttl FROM records ".
4902 "WHERE host=? AND val=? AND type=12",
4903 undef, ($host, $val) );
4904 if ($erid) {
4905 if ($type eq 'A') { # PTR -> A+PTR
4906 $etype = 65280;
4907 $logentry .= "Merged A record with existing PTR record '$host A+PTR $val', TTL $ettl";
4908 }
4909 if ($type eq 'AAAA') { # PTR -> AAAA+PTR
4910 $etype = 65281;
4911 $logentry .= "Merged AAAA record with existing PTR record '$host AAAA+PTR $val', TTL $ettl";
4912 }
4913 $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL
4914 $dbh->do("UPDATE records SET domain_id=?,ttl=?,type=? WHERE record_id=?", undef,
4915 ($domain_id, $ettl, $etype, $erid));
4916 $nrecs++;
4917 $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $erdns, entry => $logentry);
4918 next; # while axfr_next
4919 }
4920 } # $rev eq 'n'
4921 else {
4922 # importing a revzone, we have PTR records that could be merged with matching A/AAAA records
4923 my ($domid,$erid,$ettl,$etype) = $dbh->selectrow_array("SELECT domain_id,record_id,ttl,type FROM records ".
4924 "WHERE host=? AND val=? AND (type=1 OR type=28)",
4925 undef, ($host, $val) );
4926 if ($erid) {
4927 if ($etype == 1) { # A -> A+PTR
4928 $etype = 65280;
4929 $logentry .= "Merged PTR record with existing matching A record '$host A+PTR $val', TTL $ettl";
4930 }
4931 if ($etype == 28) { # AAAA -> AAAA+PTR
4932 $etype = 65281;
4933 $logentry .= "Merged PTR record with existing matching AAAA record '$host AAAA+PTR $val', TTL $ettl";
4934 }
4935 $ettl = ($ettl < $ttl ? $ettl : $ttl); # use lower TTL
4936 $dbh->do("UPDATE records SET rdns_id=?,ttl=?,type=? WHERE record_id=?", undef,
4937 ($rdns_id, $ettl, $etype, $erid));
4938 $nrecs++;
4939 $self->_log(group_id => $group, domain_id => $domid, rdns_id => $rdns_id, entry => $logentry);
4940 next; # while axfr_next
4941 }
4942 } # $rev eq 'y'
4943 } # if $args{merge}
4944
4945 # Insert the new record
4946 $sth->execute($domain_id, $rdns_id, $host, $reverse_typemap{$type}, $val,
4947 $distance, $weight, $port, $ttl);
4948
4949 $nrecs++;
4950
4951 if ($type eq 'SOA') {
4952 # also !$args{rwsoa}, but if that's set, it should be impossible to get here.
4953 my @tmp1 = split /:/, $host;
4954 my @tmp2 = split /:/, $val;
4955 $logentry .= "Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
4956 "[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl";
4957 } elsif ($logfrag) {
4958 # special case for log entries we need to meddle with a little.
4959 $logentry .= $logfrag;
4960 } else {
4961 $logentry .= "Added record '$host $type";
4962 $logentry .= " [distance $distance]" if $type eq 'MX';
4963 $logentry .= " [priority $distance] [weight $weight] [port $port]" if $type eq 'SRV';
4964 $logentry .= " $val', TTL $ttl";
4965 }
4966 $self->_log(group_id => $group, domain_id => $domain_id, rdns_id => $rdns_id, entry => $logentry);
4967
4968 } # while axfr_next
4969
4970# Detect and handle delegated subzones
4971# Placeholder for when we decide what to actually do with this, see previous comments in NS and CNAME handling.
4972#foreach (keys %suboct) {
4973# print "found ".($suboct{$_}{ns} ? @{$suboct{$_}{ns}} : '0')." NS records and ".
4974# ($suboct{$_}{cname} ? @{$suboct{$_}{cname}} : '0')." CNAMEs for $_\n";
4975#}
4976
4977 # Overwrite SOA record
4978 if ($args{rwsoa}) {
4979 $soaflag = 1;
4980 my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM "._rectable('y', $rev)." WHERE group_id=? AND type=?");
4981 my $sthputsoa = $dbh->prepare("INSERT INTO records (".
4982 ($rev eq 'n' ? 'domain_id' : 'rdns_id').",host,type,val,ttl) VALUES (?,?,?,?,?)");
4983 $sthgetsoa->execute($group,$reverse_typemap{SOA});
4984 while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
4985 if ($rev eq 'n') {
4986 $host =~ s/DOMAIN/$zone/g;
4987 $val =~ s/DOMAIN/$zone/g; # arguably useless
4988 } else {
4989 $host =~ s/ADMINDOMAIN/$self->{domain}/g;
4990 }
4991 $sthputsoa->execute($zone_id,$host,$reverse_typemap{SOA},$val,$ttl);
4992 }
4993 }
4994
4995 # Add standard NS records. The old one(s) should have been skipped by this point.
4996 if ($args{rwns}) {
4997 $nsflag = 1;
4998 my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM "._rectable('y',$rev)." WHERE group_id=? AND type=?");
4999 my $sthputns = $dbh->prepare("INSERT INTO records (".
5000 ($rev eq 'n' ? 'domain_id' : 'rdns_id').",host,type,val,ttl) VALUES (?,?,?,?,?)");
5001 $sthgetns->execute($group,$reverse_typemap{NS});
5002 while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
5003 if ($rev eq 'n') {
5004 $host =~ s/DOMAIN/$zone/g;
5005 $val =~ s/DOMAIN/$zone/g; #hmm.
5006 } else {
5007 $host =~ s/ADMINDOMAIN/$self->{domain}/g; #hmm.
5008 $val =~ s/ZONE/$cidr/g;
5009 }
5010 $sthputns->execute($zone_id,$host,$reverse_typemap{NS},$val,$ttl);
5011 }
5012 }
5013
5014 die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
5015 die "Bad zone: No SOA record!\n" if !$soaflag;
5016 die "Bad zone: No NS records!\n" if !$nsflag;
5017
5018 $dbh->commit;
5019
5020 };
5021
5022 if ($@) {
5023 my $msg = $@;
5024 eval { $dbh->rollback; };
5025 return ('FAIL',$msg." $warnmsg");
5026 } else {
5027 return ('WARN', $warnmsg) if $warnmsg;
5028 return ('OK',"Imported OK");
5029 }
5030
5031 # it should be impossible to get here.
5032 return ('WARN',"OOOK!");
5033} # end importAXFR()
5034
5035
5036## DNSDB::importBIND()
5037sub importBIND {
5038} # end importBIND()
5039
5040
5041## DNSDB::import_tinydns()
5042sub import_tinydns {
5043} # end import_tinydns()
5044
5045
5046## DNSDB::export()
5047# Export the DNS database, or a part of it
5048# Takes a string indicating the export type, plus optional arguments depending on type
5049# Writes zone data to targets as appropriate for type
5050sub export {
5051 my $self = shift;
5052 my $target = shift;
5053
5054 if ($target eq 'tiny') {
5055 eval {
5056 $self->__export_tiny(@_);
5057 };
5058 if ($@) {
5059 $errstr = $@;
5060 return undef;
5061 }
5062 }
5063# elsif ($target eq 'foo') {
5064# __export_foo(@_);
5065#}
5066# etc
5067
5068 return 1;
5069} # end export()
5070
5071
5072## DNSDB::__export_tiny
5073# Internal sub to implement tinyDNS (compatible) export
5074# Takes filehandle to write export to, optional argument(s)
5075# to determine which data gets exported
5076sub __export_tiny {
5077 my $self = shift;
5078 my $dbh = $self->{dbh};
5079 my $datafile = shift;
5080 my $zonefilehandle = $datafile; # makes cache/no-cache a little simpler
5081
5082##fixme: slurp up further options to specify particular zone(s) to export
5083
5084##fixme: fail if $datafile isn't an open, writable file
5085
5086 # Error check - does the cache dir exist, if we're using one?
5087 if ($self->{usecache}) {
5088 die "Cache directory does not exist\n" if !-e $self->{exportcache};
5089 die "$self->{exportcache} is not a directory\n" if !-d $self->{exportcache};
5090 die "$self->{exportcache} must be both readable and writable\n"
5091 if !-r $self->{exportcache} || !-w $self->{exportcache};
5092 }
5093
5094 # easy case - export all evarything
5095 # not-so-easy case - export item(s) specified
5096 # todo: figure out what kind of list we use to export items
5097
5098# raw packet in unknown format: first byte indicates length
5099# of remaining data, allows up to 255 raw bytes
5100
5101 # note: the only I/O failures we seem to be able to actually catch
5102 # here are "closed filehandle" errors. we're probably not writing
5103 # enough data at this point to properly trigger an "out of space"
5104 # error. :/
5105 eval {
5106 use warnings FATAL => ('io');
5107 # Locations/views - worth including in the caching setup?
5108 my $lochash = $dbh->selectall_hashref("SELECT location,iplist FROM locations", 'location');
5109 foreach my $location (keys %$lochash) {
5110 foreach my $ipprefix (split /[,\s]+/, $lochash->{$location}{iplist}) {
5111 $ipprefix =~ s/\s+//g;
5112 $ipprefix = new NetAddr::IP $ipprefix;
5113##fixme: how to handle IPv6?
5114next if $ipprefix->{isv6};
5115 # have to account for /nn CIDR entries. tinydns only speaks octet-sliced prefix.
5116 if ($ipprefix->masklen <= 8) {
5117 foreach ($ipprefix->split(8)) {
5118 my $tmp = $_->addr;
5119 $tmp =~ s/\.\d+\.\d+\.\d+$//;
5120 print $datafile "%$location:$tmp\n";
5121 }
5122 } elsif ($ipprefix->masklen <= 16) {
5123 foreach ($ipprefix->split(16)) {
5124 my $tmp = $_->addr;
5125 $tmp =~ s/\.\d+\.\d+$//;
5126 print $datafile "%$location:$tmp\n";
5127 }
5128 } elsif ($ipprefix->masklen <= 24) {
5129 foreach ($ipprefix->split(24)) {
5130 my $tmp = $_->addr;
5131 $tmp =~ s/\.\d+$//;
5132 print $datafile "%$location:$tmp\n";
5133 }
5134 } else {
5135 foreach ($ipprefix->split(32)) {
5136 print $datafile "%$location:".$_->addr."\n";
5137 }
5138 }
5139 }
5140 print $datafile "%$location\n" if !$lochash->{$location}{iplist};
5141 }
5142 };
5143 if ($@) {
5144 die "Error writing locations to master file: $@, $!\n";
5145 }
5146
5147 # tracking hash so we don't double-export A+PTR or AAAA+PTR records.
5148 my %recflags;
5149
5150# For reasons unknown, we can't sanely UNION these statements. Feh.
5151# Supposedly it should work though (note last 3 lines):
5152## PG manual
5153#UNION Clause
5154#
5155#The UNION clause has this general form:
5156#
5157# select_statement UNION [ ALL ] select_statement
5158#
5159#select_statement is any SELECT statement without an ORDER BY, LIMIT, FOR UPDATE, or FOR SHARE clause. (ORDER BY
5160#and LIMIT can be attached to a subexpression if it is enclosed in parentheses. Without parentheses, these
5161#clauses will be taken to apply to the result of the UNION, not to its right-hand input expression.)
5162 my $soasth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
5163 "FROM records WHERE rdns_id=? AND type=6");
5164 my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ".
5165 "FROM records WHERE rdns_id=? AND NOT type=6 ".
5166 "ORDER BY masklen(inetlazy(val)) DESC, inetlazy(val)");
5167 my $revsth = $dbh->prepare("SELECT rdns_id,revnet,status,changed FROM revzones WHERE status=1 ".
5168 "ORDER BY masklen(revnet) DESC, rdns_id");
5169 my $zonesth = $dbh->prepare("UPDATE revzones SET changed='n' WHERE rdns_id=?");
5170 $revsth->execute();
5171 while (my ($revid,$revzone,$revstat,$changed) = $revsth->fetchrow_array) {
5172##fixme: need to find a way to block opening symlinked files without introducing a race.
5173# O_NOFOLLOW
5174# If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was
5175# added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will
5176# still be followed.
5177# but that doesn't help other platforms. :/
5178 my $tmpzone = NetAddr::IP->new($revzone);
5179##fixme: locations/views? subnet mask? need to avoid possible collisions with zone/superzone
5180## (eg /20 vs /24, starting on .0.0)
5181 my $cz = $tmpzone->network->addr."-".$tmpzone->masklen;
5182 my $cachefile = "$self->{exportcache}/$cz";
5183 my $tmpcache = "$self->{exportcache}/tmp.$cz.$$";
5184 eval {
5185
5186 # write fresh records if:
5187 # - we are not using the cache
5188 # - force_refresh is set
5189 # - the zone has changed
5190 # - the cache file does not exist
5191 # - the cache file is empty
5192 if (!$self->{usecache} || $self->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) {
5193 if ($self->{usecache}) {
5194 open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n";
5195 $zonefilehandle = *ZONECACHE;
5196 }
5197
5198 # need to fetch this separately since the rest of the records all (should) have real IPs in val
5199 $soasth->execute($revid);
5200 my (@zsoa) = $soasth->fetchrow_array();
5201 _printrec_tiny($zonefilehandle, $zsoa[7], 'y',\%recflags,$revzone,
5202 $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],'');
5203
5204 $recsth->execute($revid);
5205 my $fullzone = _ZONE($tmpzone, 'ZONE', 'r', '.').($tmpzone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
5206
5207 while (my ($host, $type, $val, $dist, $weight, $port, $ttl, $recid, $loc, $stamp, $expires, $stampactive)
5208 = $recsth->fetchrow_array) {
5209 next if $recflags{$recid};
5210
5211 # Check for out-of-zone data
5212 if ($val =~ /\.arpa$/) {
5213 # val is non-IP
5214 if ($val !~ /$fullzone$/) {
5215 warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
5216 next;
5217 }
5218 } else {
5219 my $ipval = new NetAddr::IP $val;
5220 if (!$tmpzone->contains($ipval)) {
5221 warn "Not exporting out-of-zone record $val $typemap{$type} $host, $ttl (zone $tmpzone)\n";
5222 next;
5223 }
5224 } # is $val a raw .arpa name?
5225
5226 # Spaces are evil.
5227 $val =~ s/^\s+//;
5228 $val =~ s/\s+$//;
5229 if ($typemap{$type} ne 'TXT') {
5230 # Leading or trailng spaces could be legit in TXT records.
5231 $host =~ s/^\s+//;
5232 $host =~ s/\s+$//;
5233 }
5234
5235 _printrec_tiny($zonefilehandle, $recid, 'y', \%recflags, $revzone,
5236 $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
5237
5238 $recflags{$recid} = 1;
5239
5240 } # while ($recsth)
5241
5242 if ($self->{usecache}) {
5243 close ZONECACHE; # force the file to be written
5244 # catch obvious write errors that leave an empty temp file
5245 if (-s $tmpcache) {
5246 rename $tmpcache, $cachefile
5247 or die "Error overwriting cache file $cachefile with temporary file: $!\n";
5248 }
5249 }
5250
5251 } # if $changed or cache filesize is 0
5252
5253 };
5254 if ($@) {
5255 die "error writing ".($self->{usecache} ? 'new data for ' : '')."$revzone: $@\n";
5256 # error! something borked, and we should be able to fall back on the old cache file
5257 # report the error, somehow.
5258 } else {
5259 # mark zone as unmodified. Only do this if no errors, that way
5260 # export failures should recover a little more automatically.
5261 $zonesth->execute($revid);
5262 }
5263
5264 if ($self->{usecache}) {
5265 # We've already made as sure as we can that a cached zone file is "good",
5266 # although possibly stale/obsolete due to errors creating a new one.
5267 eval {
5268 open CACHE, "<$cachefile" or die $!;
5269 print $datafile $_ or die "error copying cached $revzone to master file: $!" while <CACHE>;
5270 close CACHE;
5271 };
5272 die $@ if $@;
5273 }
5274
5275 } # while ($revsth)
5276
5277 $soasth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location ".
5278 "FROM records WHERE domain_id=? AND type=6");
5279 $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl,record_id,location,extract(epoch from stamp),expires,stampactive ".
5280 "FROM records WHERE domain_id=? AND NOT type=6"); # Just exclude all types relating to rDNS
5281# "FROM records WHERE domain_id=? AND type < 65280"); # Just exclude all types relating to rDNS
5282 my $domsth = $dbh->prepare("SELECT domain_id,domain,status,changed FROM domains WHERE status=1 ORDER BY domain_id");
5283 $zonesth = $dbh->prepare("UPDATE domains SET changed='n' WHERE domain_id=?");
5284 $domsth->execute();
5285 while (my ($domid,$dom,$domstat,$changed) = $domsth->fetchrow_array) {
5286##fixme: need to find a way to block opening symlinked files without introducing a race.
5287# O_NOFOLLOW
5288# If pathname is a symbolic link, then the open fails. This is a FreeBSD extension, which was
5289# added to Linux in version 2.1.126. Symbolic links in earlier components of the pathname will
5290# still be followed.
5291# but that doesn't help other platforms. :/
5292 my $cachefile = "$self->{exportcache}/$dom";
5293 my $tmpcache = "$self->{exportcache}/tmp.$dom.$$";
5294 eval {
5295
5296 # write fresh records if:
5297 # - we are not using the cache
5298 # - force_refresh is set
5299 # - the zone has changed
5300 # - the cache file does not exist
5301 # - the cache file is empty
5302 if (!$self->{usecache} || $self->{force_refresh} || $changed || !-e $cachefile || -z $cachefile) {
5303 if ($self->{usecache}) {
5304 open ZONECACHE, ">$tmpcache" or die "Error creating temporary file $tmpcache: $!\n";
5305 $zonefilehandle = *ZONECACHE;
5306 }
5307
5308 # need to fetch this separately so the SOA comes first in the flatfile....
5309 # Just In Case we need/want to reimport from the flatfile later on.
5310 $soasth->execute($domid);
5311 my (@zsoa) = $soasth->fetchrow_array();
5312 _printrec_tiny($zonefilehandle, $zsoa[7], 'n',\%recflags,$dom,
5313 $zsoa[0],$zsoa[1],$zsoa[2],$zsoa[3],$zsoa[4],$zsoa[5],$zsoa[6],$zsoa[8],'');
5314
5315 $recsth->execute($domid);
5316 while (my ($host,$type,$val,$dist,$weight,$port,$ttl,$recid,$loc,$stamp,$expires,$stampactive) = $recsth->fetchrow_array) {
5317 next if $recflags{$recid};
5318
5319 # Check for out-of-zone data
5320 if ($host !~ /$dom$/) {
5321 warn "Not exporting out-of-zone record $host $type $val, $ttl (zone $dom)\n";
5322 next;
5323 }
5324
5325 # Spaces are evil.
5326 $host =~ s/^\s+//;
5327 $host =~ s/\s+$//;
5328 if ($typemap{$type} ne 'TXT') {
5329 # Leading or trailng spaces could be legit in TXT records.
5330 $val =~ s/^\s+//;
5331 $val =~ s/\s+$//;
5332 }
5333
5334 _printrec_tiny($zonefilehandle, $recid, 'n', \%recflags,
5335 $dom, $host, $type, $val, $dist, $weight, $port, $ttl, $loc, $stamp, $expires, $stampactive);
5336
5337 $recflags{$recid} = 1;
5338
5339 } # while ($recsth)
5340
5341
5342 if ($self->{usecache}) {
5343 close ZONECACHE; # force the file to be written
5344 # catch obvious write errors that leave an empty temp file
5345 if (-s $tmpcache) {
5346 rename $tmpcache, $cachefile
5347 or die "Error overwriting cache file $cachefile with temporary file: $!\n";
5348 }
5349 }
5350
5351 } # if $changed or cache filesize is 0
5352
5353 };
5354 if ($@) {
5355 die "error writing ".($self->{usecache} ? 'new data for ' : '')."$dom: $@\n";
5356 # error! something borked, and we should be able to fall back on the old cache file
5357 # report the error, somehow.
5358 } else {
5359 # mark domain as unmodified. Only do this if no errors, that way
5360 # export failures should recover a little more automatically.
5361 $zonesth->execute($domid);
5362 }
5363
5364 if ($self->{usecache}) {
5365 # We've already made as sure as we can that a cached zone file is "good",
5366 # although possibly stale/obsolete due to errors creating a new one.
5367 eval {
5368 open CACHE, "<$cachefile" or die $!;
5369 print $datafile $_ or die "error copying cached $dom to master file: $!" while <CACHE>;
5370 close CACHE;
5371 };
5372 die $@ if $@;
5373 }
5374
5375 } # while ($domsth)
5376
5377 return 1;
5378} # end __export_tiny()
5379
5380
5381# Utility sub for __export_tiny above
5382sub _printrec_tiny {
5383 my ($datafile, $recid, $revrec, $recflags, $zone, $host, $type, $val, $dist, $weight, $port, $ttl,
5384 $loc, $stamp, $expires, $stampactive) = @_;
5385
5386 $loc = '' if !$loc; # de-nullify - just in case
5387##fixme: handle case of record-with-location-that-doesn't-exist better.
5388# note this currently fails safe (tested) - records with a location that
5389# doesn't exist will not be sent to any client
5390# $loc = '' if !$lochash->{$loc};
5391
5392
5393## Records that are valid only before or after a set time
5394
5395# record due to expire sometime is the complex case. we don't want to just
5396# rely on tinydns' auto-adjusting TTLs, because the default TTL in that case
5397# is one day instead of the SOA minttl as BIND might do.
5398
5399# consider the case where a record is set to expire a week ahead, but the next
5400# day later you want to change it NOW (or as NOWish as you get with your DNS
5401# management practice). but now you're stuck, because someone, somewhere,
5402# has just done a lookup before your latest change was published, and they'll
5403# be caching that old, broken record for 1 day instead of your zone default
5404# TTL.
5405
5406# $stamp-$ttl is the *latest* we can publish the record with the defined TTL
5407# to still have the expiry happen as scheduled, but we need to find some
5408# *earlier* point. We can maybe guess, and 2x TTL is probably reasonable,
5409# but we need info on the export frequency.
5410
5411# export the normal, non-expiring record up until $stamp-<guesstimate>, then
5412# switch to exporting a record with the TAI64 stamp and a 0 TTL so tinydns
5413# takes over TTL management.
5414
5415 if ($stampactive) {
5416 if ($expires) {
5417 # record expires at $stamp; decide if we need to keep the TTL and ignore
5418 # the stamp for a time or if we need to change the TTL to 0 and convert
5419 # $stamp to TAI64 so tinydns can use $stamp to autoadjust the TTL on the fly.
5420# extra hack, optimally needs more knowledge of data export frequency
5421# smack the idiot customer who insists on 0 TTLs; they can suck up and
5422# deal with a 10-minute TTL. especially on scheduled changes. note this
5423# should be (export freq * 2), but we don't know the actual export frequency.
5424$ttl = 300 if $ttl == 0; #hack phtui
5425 my $ahead = (86400 < $ttl*2 ? 86400 : $ttl*2);
5426 if ((time() + $ahead) < $stamp) {
5427 # more than 2x TTL OR more than one day (whichever is less) from expiry time; publish normal record
5428 $stamp = '';
5429 } else {
5430 # less than 2x TTL from expiry time, let tinydns take over TTL management and publish the TAI64 stamp.
5431 $ttl = 0;
5432 $stamp = unixtai64($stamp);
5433 $stamp =~ s/\@//;
5434 }
5435 } else {
5436 # record is "active after"; convert epoch from database to TAI64, publish, and collect $200.
5437 $stamp = unixtai64($stamp);
5438 $stamp =~ s/\@//;
5439 }
5440 } else {
5441 # flag for active timestamp is false; don't actually put a timestamp in the output
5442 $stamp = '';
5443 }
5444
5445 # support tinydns' auto-TTL
5446 $ttl = '' if $ttl == -1;
5447# these are WAY FREAKING HIGH - higher even than most TLD registry TTLs!
5448# NS 259200 => 3d
5449# all others 86400 => 1d
5450
5451 if ($revrec eq 'y') {
5452 $val = $zone if $val eq '@';
5453 } else {
5454 $host = $zone if $host eq '@';
5455 }
5456
5457 ## Convert a bare number into an octal-coded pair of octets.
5458 # Take optional arg to indicate a decimal or hex input. Defaults to hex.
5459 sub octalize {
5460 my $tmp = shift;
5461 my $srctype = shift || 'h'; # default assumes hex string
5462 $tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
5463 $tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
5464 my @o = ($tmp =~ /^(..)(..)$/); # split into octets
5465 return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
5466 }
5467
5468## WARNING: This works to export even the whole Internet's worth of IP space...
5469## if you have the disk/RAM to handle the dataset, and you call this sub based on /16-sized chunks
5470## A /16 took ~3 seconds with a handful of separate records; adding a /8 pushed export time out to ~13m:40s
5471## 0/0 is estimated to take ~54 hours and ~256G of disk
5472## RAM usage depends on how many non-template entries you have in the set.
5473## This should probably be done on record addition rather than export; large blocks may need to be done in a
5474## forked process
5475 sub __publish_subnet {
5476 my $sub = shift;
5477 my $recflags = shift;
5478 my $hpat = shift;
5479 my $fh = shift;
5480 my $ttl = shift;
5481 my $stamp = shift;
5482 my $loc = shift;
5483 my $ptronly = shift || 0;
5484
5485 my $iplist = $sub->splitref(32);
5486 foreach (@$iplist) {
5487 my $ip = $_->addr;
5488 # make as if we split the non-octet-aligned block into octet-aligned blocks as with SOA
5489 next if $ip =~ /\.(0|255)$/;
5490 next if $$recflags{$ip};
5491 $$recflags{$ip}++;
5492 next if $hpat eq '%blank%'; # Allows blanking a subnet so no records are published.
5493 my $rec = $hpat; # start fresh with the template for each IP
5494 _template4_expand(\$rec, $ip);
5495 print $fh ($ptronly ? "^"._ZONE($_, 'ZONE.in-addr.arpa', 'r', '.').":$rec" : "=$rec:$ip").
5496 ":$ttl:$stamp:$loc\n" or die $!;
5497 }
5498 }
5499
5500##fixme? append . to all host/val hostnames
5501 if ($typemap{$type} eq 'SOA') {
5502
5503 # host contains pri-ns:responsible
5504 # val is abused to contain refresh:retry:expire:minttl
5505##fixme: "manual" serial vs tinydns-autoserial
5506 # let's be explicit about abusing $host and $val
5507 my ($email, $primary) = (split /:/, $host)[0,1];
5508 my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3];
5509 if ($revrec eq 'y') {
5510##fixme: have to publish SOA records for each v4 /24 in sub-/16, and each /16 in sub-/8
5511# what about v6?
5512# -> only need SOA for local chunks offset from reverse delegation boundaries, so v6 is fine
5513 $zone = NetAddr::IP->new($zone);
5514 # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones
5515 if (!$zone->{isv6} && ($zone->masklen < 24) && ($zone->masklen % 8 != 0)) {
5516 foreach my $szone ($zone->split($zone->masklen + (8 - $zone->masklen % 8))) {
5517 $szone = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.');
5518 print $datafile "Z$szone:$primary:$email"."::$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n"
5519 or die $!;
5520 }
5521 return; # skips "default" bits just below
5522 }
5523 $zone = _ZONE($zone, 'ZONE', 'r', '.').($zone->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
5524 }
5525 print $datafile "Z$zone:$primary:$email"."::$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n"
5526 or die $!;
5527
5528 } elsif ($typemap{$type} eq 'A') {
5529
5530 print $datafile "+$host:$val:$ttl:$stamp:$loc\n" or die $!;
5531
5532 } elsif ($typemap{$type} eq 'NS') {
5533
5534 if ($revrec eq 'y') {
5535 $val = NetAddr::IP->new($val);
5536 # handle split-n-multiply SOA for off-octet (8 < mask < 16) or (16 < mask < 24) v4 zones
5537 if (!$val->{isv6} && ($val->masklen < 24) && ($val->masklen % 8 != 0)) {
5538 foreach my $szone ($val->split($val->masklen + (8 - $val->masklen % 8))) {
5539 my $szone2 = _ZONE($szone, 'ZONE.in-addr.arpa', 'r', '.');
5540 next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen;
5541 print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n" or die $!;
5542 $$recflags{$szone2} = $val->masklen;
5543 }
5544 } elsif ($val->{isv6} && ($val->masklen < 64) && ($val->masklen % 4 !=0)) {
5545 foreach my $szone ($val->split($val->masklen + (4 - $val->masklen % 4))) {
5546 my $szone2 = _ZONE($szone, 'ZONE.ip6.arpa', 'r', '.');
5547 next if $$recflags{$szone2} && $$recflags{$szone2} > $val->masklen;
5548 print $datafile "\&$szone2"."::$host:$ttl:$stamp:$loc\n" or die $!;
5549 $$recflags{$szone2} = $val->masklen;
5550 }
5551 } else {
5552 my $val2 = _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa');
5553 print $datafile "\&$val2"."::$host:$ttl:$stamp:$loc\n" or die $!;
5554 $$recflags{$val2} = $val->masklen;
5555 }
5556 } else {
5557 print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n" or die $!;
5558 }
5559
5560 } elsif ($typemap{$type} eq 'AAAA') {
5561
5562# print $datafile ":$host:28:";
5563 my $altgrp = 0;
5564 my @altconv;
5565 # Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing)
5566 foreach (split /:/, $val) {
5567 if (/^$/) {
5568 # flag blank entry; this is a series of 0's of (currently) unknown length
5569 $altconv[$altgrp++] = 's';
5570 } else {
5571 # call sub to convert 1-4 hex digits to 2 string-rep octal bytes
5572 $altconv[$altgrp++] = octalize($_)
5573 }
5574 }
5575 my $prefix = ":$host:28:";
5576 foreach my $octet (@altconv) {
5577 # if not 's', output
5578 $prefix .= $octet unless $octet =~ /^s$/;
5579 # if 's', output (9-array length)x literal '\000\000'
5580 $prefix .= '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
5581 }
5582 print $datafile "$prefix:$ttl:$stamp:$loc\n" or die $!;
5583
5584 } elsif ($typemap{$type} eq 'MX') {
5585
5586##fixme: what if we get an MX AXFRed into a reverse zone?
5587 print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n" or die $!;
5588
5589 } elsif ($typemap{$type} eq 'TXT') {
5590
5591##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
5592 if ($revrec eq 'n') {
5593 $val =~ s/:/\\072/g; # may need to replace other symbols
5594 print $datafile "'$host:$val:$ttl:$stamp:$loc\n" or die $!;
5595 } else {
5596 $host =~ s/:/\\072/g; # may need to replace other symbols
5597 my $val2 = NetAddr::IP->new($val);
5598 print $datafile "'"._ZONE($val2, 'ZONE', 'r', '.').($val2->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5599 ":$host:$ttl:$stamp:$loc\n" or die $!;
5600 }
5601
5602# by-hand TXT
5603#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
5604#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
5605#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
5606
5607#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
5608#: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
5609
5610# very long TXT record as brought in by axfr-get
5611# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
5612# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
5613#:longtxt.deepnet.cx:16:
5614#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
5615#\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.
5616#\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.
5617#:3600
5618
5619 } elsif ($typemap{$type} eq 'CNAME') {
5620
5621 if ($revrec eq 'n') {
5622 print $datafile "C$host:$val:$ttl:$stamp:$loc\n" or die $!;
5623 } else {
5624 my $val2 = NetAddr::IP->new($val);
5625 print $datafile "C"._ZONE($val2, 'ZONE', 'r', '.').($val2->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5626 ":$host:$ttl:$stamp:$loc\n" or die $!;
5627 }
5628
5629 } elsif ($typemap{$type} eq 'SRV') {
5630
5631 # data is two-byte values for priority, weight, port, in that order,
5632 # followed by length/string data
5633
5634 print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d') or die $!;
5635
5636 $val .= '.' if $val !~ /\.$/;
5637 foreach (split /\./, $val) {
5638 printf $datafile "\\%0.3o%s", length($_), $_ or die $!;
5639 }
5640 print $datafile "\\000:$ttl:$stamp:$loc\n" or die $!;
5641
5642 } elsif ($typemap{$type} eq 'RP') {
5643
5644 # RP consists of two mostly free-form strings.
5645 # The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
5646 # The second is the "hostname" of a TXT record with more info.
5647 my $prefix = ":$host:17:";
5648 my ($who,$what) = split /\s/, $val;
5649 foreach (split /\./, $who) {
5650 $prefix .= sprintf "\\%0.3o%s", length($_), $_;
5651 }
5652 $prefix .= '\000';
5653 foreach (split /\./, $what) {
5654 $prefix .= sprintf "\\%0.3o%s", length($_), $_;
5655 }
5656 print $datafile "$prefix\\000:$ttl:$stamp:$loc\n" or die $!;
5657
5658 } elsif ($typemap{$type} eq 'PTR') {
5659
5660 $zone = NetAddr::IP->new($zone);
5661 $$recflags{$val}++;
5662 if (!$zone->{isv6} && $zone->masklen > 24) {
5663 ($val) = ($val =~ /\.(\d+)$/);
5664 print $datafile "^$val."._ZONE($zone, 'ZONE', 'r', '.').'.in-addr.arpa'.
5665 ":$host:$ttl:$stamp:$loc\n" or die $!;
5666 } else {
5667 $val = NetAddr::IP->new($val);
5668 print $datafile "^".
5669 _ZONE($val, 'ZONE', 'r', '.').($val->{isv6} ? '.ip6.arpa' : '.in-addr.arpa').
5670 ":$host:$ttl:$stamp:$loc\n" or die $!;
5671 }
5672
5673 } elsif ($type == 65280) { # A+PTR
5674
5675 $$recflags{$val}++;
5676 print $datafile "=$host:$val:$ttl:$stamp:$loc\n" or die $!;
5677
5678 } elsif ($type == 65281) { # AAAA+PTR
5679
5680 $$recflags{$val}++;
5681 # treat these as two separate records. since tinydns doesn't have
5682 # a native combined type, we have to create them separately anyway.
5683 # print both; a dangling record is harmless, and impossible via web
5684 # UI anyway
5685 _printrec_tiny($datafile,$revrec,$recflags,$zone,$host,28,$val,$dist,$weight,$port,$ttl,$loc,$stamp);
5686 _printrec_tiny($datafile,$revrec,$recflags,$zone,$host,12,$val,$dist,$weight,$port,$ttl,$loc,$stamp);
5687##fixme: add a config flag to indicate use of the patch from http://www.fefe.de/dns/
5688# type 6 is for AAAA+PTR, type 3 is for AAAA
5689
5690 } elsif ($type == 65282) { # PTR template
5691
5692 # only useful for v4 with standard DNS software, since this expands all
5693 # IPs in $zone (or possibly $val?) with autogenerated records
5694 $val = NetAddr::IP->new($val);
5695 return if $val->{isv6};
5696
5697 if ($val->masklen <= 16) {
5698 foreach my $sub ($val->split(16)) {
5699 __publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, 1);
5700 }
5701 } else {
5702 __publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, 1);
5703 }
5704
5705 } elsif ($type == 65283) { # A+PTR template
5706
5707 $val = NetAddr::IP->new($val);
5708 # Just In Case. An A+PTR should be impossible to add to a v6 revzone via API.
5709 return if $val->{isv6};
5710
5711 if ($val->masklen <= 16) {
5712 foreach my $sub ($val->split(16)) {
5713 __publish_subnet($sub, $recflags, $host, $datafile, $ttl, $stamp, $loc, 0);
5714 }
5715 } else {
5716 __publish_subnet($val, $recflags, $host, $datafile, $ttl, $stamp, $loc, 0);
5717 }
5718
5719 } elsif ($type == 65284) { # AAAA+PTR template
5720 # Stub for completeness. Could be exported to DNS software that supports
5721 # some degree of internal automagic in generic-record-creation
5722 # (eg http://search.cpan.org/dist/AllKnowingDNS/ )
5723
5724 } elsif ($type == 65285) { # Delegation
5725 # This is intended for reverse zones, but may prove useful in forward zones.
5726
5727 # All delegations need to create one or more NS records. The NS record handler knows what to do.
5728 _printrec_tiny($datafile,$revrec,$recflags,$zone,$host,$reverse_typemap{'NS'},
5729 $val,$dist,$weight,$port,$ttl,$loc,$stamp);
5730 if ($revrec eq 'y') {
5731 # In the case of a sub-/24 v4 reverse delegation, we need to generate CNAMEs
5732 # to redirect all of the individual IP lookups as well.
5733 # Not sure how this would actually resolve if a /24 or larger was delegated
5734 # one way, and a sub-/24 in that >=/24 was delegated elsewhere...
5735 my $dblock = NetAddr::IP->new($val);
5736 if (!$dblock->{isv6} && $dblock->masklen > 24) {
5737 my @subs = $dblock->split;
5738 foreach (@subs) {
5739 next if $$recflags{"$_"};
5740 my ($oct) = ($_->addr =~ /(\d+)$/);
5741 print $datafile "C"._ZONE($_, 'ZONE.in-addr.arpa', 'r', '.').":$oct.".
5742 _ZONE($dblock, 'ZONE.in-addr.arpa', 'r', '.').":$ttl:$stamp:$loc\n" or die $!;
5743 $$recflags{"$_"}++;
5744 }
5745 }
5746 }
5747
5748##
5749## Uncommon types. These will need better UI support Any Day Sometime Maybe(TM).
5750##
5751
5752 } elsif ($type == 44) { # SSHFP
5753 my ($algo,$fpt,$fp) = split /\s+/, $val;
5754
5755 my $rec = sprintf ":$host:44:\\%0.3o\\%0.3o", $algo, $fpt;
5756 while (my ($byte) = ($fp =~ /^(..)/) ) {
5757 $rec .= sprintf "\\%0.3o", hex($byte);
5758 $fp =~ s/^..//;
5759 }
5760 print $datafile "$rec:$ttl:$stamp:$loc\n" or die $!;
5761
5762 } else {
5763 # raw record. we don't know what's in here, so we ASS-U-ME the user has
5764 # put it in correctly, since either the user is messing directly with the
5765 # database, or the record was imported via AXFR
5766 # <split by char>
5767 # convert anything not a-zA-Z0-9.- to octal coding
5768
5769##fixme: add flag to export "unknown" record types - note we'll probably end up
5770# mangling them since they were written to the DB from Net::DNS::RR::<type>->rdatastr.
5771 #print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n";
5772
5773 } # record type if-else
5774
5775} # end _printrec_tiny()
5776
5777
5778## DNSDB::mailNotify()
5779# Sends notification mail to recipients regarding a DNSDB operation
5780sub mailNotify {
5781 my $self = shift;
5782 my $dbh = $self->{dbh};
5783 my ($subj,$message) = @_;
5784
5785 return if $self->{mailhost} eq 'smtp.example.com'; # do nothing if still using default SMTP host.
5786
5787 my $mailer = Net::SMTP->new($self->{mailhost}, Hello => "dnsadmin.$self->{domain}");
5788
5789 my $mailsender = ($self->{mailsender} ? $self->{mailsender} : $self->{mailnotify});
5790
5791 $mailer->mail($mailsender);
5792 $mailer->to($self->{mailnotify});
5793 $mailer->data("From: \"$self->{mailname}\" <$mailsender>\n",
5794 "To: <$self->{mailnotify}>\n",
5795 "Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n",
5796 "Subject: $subj\n",
5797 "X-Mailer: DNSAdmin v".$DNSDB::VERSION." Notify\n",
5798 "Organization: $self->{orgname}\n",
5799 "\n$message\n");
5800 $mailer->quit;
5801}
5802
5803# shut Perl up
58041;
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