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source: trunk/DNSDB.pm@ 295

Last change on this file since 295 was 295, checked in by Kris Deugau, 12 years ago

/trunk

Move entity-relationship reference hashes up into the same area
as other (semi)globals in DNSDB.pm since I was starting to add
an accidental duplicate of %par_tbl.
Move action logging for bulk domain change to DNSDB.pm: (See #35)

Clean up dns.cgi to match previous changes to zoneStatus() and delZone()
Less not-quite-identical code in dns.cgi can now be factored down
Updated changeGroup() with action logging and more error handling
Tweak logging and messages in delZone()

Property svn:keywords set to Date Rev Author Id

File size: 119.8 KB

Line
1	# dns/trunk/DNSDB.pm
2	# Abstraction functions for DNS administration
3	##
4	# $Id: DNSDB.pm 295 2012-03-29 21:06:10Z kdeugau $
5	# Copyright 2008-2011 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
21	package DNSDB;
22
23	use strict;
24	use warnings;
25	use Exporter;
26	use DBI;
27	use Net::DNS;
28	use Crypt::PasswdMD5;
29	use Net::SMTP;
30	use NetAddr::IP qw(:lower);
31	use POSIX;
32	use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
33
34	$VERSION = 0.1; ##VERSION##
35	@ISA = qw(Exporter);
36	@EXPORT_OK = qw(
37	&initGlobals &login &initActionLog
38	&initPermissions &getPermissions &changePermissions &comparePermissions
39	&changeGroup
40	&loadConfig &connectDB &finish
41	&addDomain &delZone &domainName &revName &domainID &revID &addRDNS
42	&getZoneCount &getZoneList
43	&addGroup &delGroup &getChildren &groupName
44	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
45	&getSOA &updateSOA &getRecLine &getDomRecs &getRecCount
46	&addRec &updateRec &delRec
47	&getTypelist
48	&parentID
49	&isParent
50	&zoneStatus &importAXFR
51	&export
52	&mailNotify
53	%typemap %reverse_typemap %config
54	%permissions @permtypes $permlist
55	);
56
57	@EXPORT = (); # Export nothing by default.
58	%EXPORT_TAGS = ( ALL => [qw(
59	&initGlobals &login &initActionLog
60	&initPermissions &getPermissions &changePermissions &comparePermissions
61	&changeGroup
62	&loadConfig &connectDB &finish
63	&addDomain &delZone &domainName &revName &domainID &revID &addRDNS
64	&getZoneCount &getZoneList
65	&addGroup &delGroup &getChildren &groupName
66	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
67	&getSOA &updateSOA &getRecLine &getDomRecs &getRecCount
68	&addRec &updateRec &delRec
69	&getTypelist
70	&parentID
71	&isParent
72	&zoneStatus &importAXFR
73	&export
74	&mailNotify
75	%typemap %reverse_typemap %config
76	%permissions @permtypes $permlist
77	)]
78	);
79
80	our $group = 1;
81	our $errstr = '';
82	our $resultstr = '';
83
84	# Halfway sane defaults for SOA, TTL, etc.
85	# serial defaults to 0 for convenience.
86	# value will be either YYYYMMDDNN for BIND/etc, or auto-internal for tinydns
87	our %def = qw (
88	contact hostmaster.DOMAIN
89	prins ns1.myserver.com
90	serial 0
91	soattl 86400
92	refresh 10800
93	retry 3600
94	expire 604800
95	minttl 10800
96	ttl 10800
97	);
98
99	# Arguably defined wholly in the db, but little reason to change without supporting code changes
100	our @permtypes = qw (
101	group_edit group_create group_delete
102	user_edit user_create user_delete
103	domain_edit domain_create domain_delete
104	record_edit record_create record_delete
105	self_edit admin
106	);
107	our $permlist = join(',',@permtypes);
108
109	# DNS record type map and reverse map.
110	# loaded from the database, from http://www.iana.org/assignments/dns-parameters
111	our %typemap;
112	our %reverse_typemap;
113
114	our %permissions;
115
116	# Prepopulate a basic config. Note some of these will cause errors if left unset.
117	# note: add appropriate stanzas in loadConfig to parse these
118	our %config = (
119	# Database connection info
120	dbname => 'dnsdb',
121	dbuser => 'dnsdb',
122	dbpass => 'secret',
123	dbhost => '',
124
125	# Email notice settings
126	mailhost => 'smtp.example.com',
127	mailnotify => 'dnsdb@example.com', # to
128	mailsender => 'dnsdb@example.com', # from
129	mailname => 'DNS Administration',
130	orgname => 'Example Corp',
131	domain => 'example.com',
132
133	# Template directory
134	templatedir => 'templates/',
135	# fmeh. this is a real web path, not a logical internal one. hm..
136	# cssdir => 'templates/',
137	sessiondir => 'session/',
138
139	# Session params
140	timeout => '3600', # 1 hour default
141
142	# Other miscellanea
143	log_failures => 1, # log all evarthing by default
144	perpage => 15,
145	);
146
147	## (Semi)private variables
148
149	# Hash of functions for validating record types. Filled in initGlobals() since
150	# it relies on visibility flags from the rectypes table in the DB
151	my %validators;
152
153	# Username, full name, ID - mainly for logging
154	my %userdata;
155
156	# Entity-relationship reference hashes.
157	my %par_tbl = (
158	group => 'groups',
159	user => 'users',
160	defrec => 'default_records',
161	defrevrec => 'default_rev_records',
162	domain => 'domains',
163	revzone => 'revzones',
164	record => 'records'
165	);
166	my %id_col = (
167	group => 'group_id',
168	user => 'user_id',
169	defrec => 'record_id',
170	defrevrec => 'record_id',
171	domain => 'domain_id',
172	revzone => 'rdns_id',
173	record => 'record_id'
174	);
175	my %par_col = (
176	group => 'parent_group_id',
177	user => 'group_id',
178	defrec => 'group_id',
179	defrevrec => 'group_id',
180	domain => 'group_id',
181	revzone => 'group_id',
182	record => 'domain_id'
183	);
184	my %par_type = (
185	group => 'group',
186	user => 'group',
187	defrec => 'group',
188	defrevrec => 'group',
189	domain => 'group',
190	revzone => 'group',
191	record => 'domain'
192	);
193
194	##
195	## utility functions
196	##
197
198	## DNSDB::_rectable()
199	# Takes default+rdns flags, returns appropriate table name
200	sub _rectable {
201	my $def = shift;
202	my $rev = shift;
203
204	return 'records' if $def ne 'y';
205	return 'default_records' if $rev ne 'y';
206	return 'default_rev_records';
207	} # end _rectable()
208
209	## DNSDB::_recparent()
210	# Takes default+rdns flags, returns appropriate parent-id column name
211	sub _recparent {
212	my $def = shift;
213	my $rev = shift;
214
215	return 'group_id' if $def eq 'y';
216	return 'rdns_id' if $rev eq 'y';
217	return 'domain_id';
218	} # end _recparent()
219
220	## DNSDB::_ipparent()
221	# Check an IP to be added in a reverse zone to see if it's really in the requested parent.
222	# Takes a database handle, default and reverse flags, IP (fragment) to check, parent zone ID,
223	# and a reference to a NetAddr::IP object (also used to pass back a fully-reconstructed IP for
224	# database insertion)
225	sub _ipparent {
226	my $dbh = shift;
227	my $defrec = shift;
228	my $revrec = shift;
229	my $val = shift;
230	my $id = shift;
231	my $addr = shift;
232
233	return if $revrec ne 'y'; # this sub not useful in forward zones
234
235	$$addr = NetAddr::IP->new($$val); #necessary?
236
237	# subsub to split, reverse, and overlay an IP fragment on a netblock
238	sub __rev_overlay {
239	my $splitme = shift; # ':' or '.', m'lud?
240	my $parnet = shift;
241	my $val = shift;
242	my $addr = shift;
243
244	my $joinme = $splitme;
245	$splitme = '\.' if $splitme eq '.';
246	my @working = reverse(split($splitme, $parnet->addr));
247	my @parts = reverse(split($splitme, $$val));
248	for (my $i = 0; $i <= $#parts; $i++) {
249	$working[$i] = $parts[$i];
250	}
251	my $checkme = NetAddr::IP->new(join($joinme, reverse(@working))) or return 0;
252	return 0 unless $checkme->within($parnet);
253	$$addr = $checkme; # force "correct" IP to be recorded.
254	return 1;
255	}
256
257	my ($parstr) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id = ?", undef, ($id));
258	my $parnet = NetAddr::IP->new($parstr);
259
260	# Fail early on v6-in-v4 or v4-in-v6. We're not accepting these ATM.
261	return 0 if $parnet->addr =~ /\./ && $$val =~ /:/;
262	return 0 if $parnet->addr =~ /:/ && $$val =~ /\./;
263
264	if ($$addr && $$val =~ /^[\da-fA-F][\da-fA-F:]+[\da-fA-F]$/) {
265	# the only case where NetAddr::IP's acceptance of legitimate IPs is "correct" is for a proper IPv6 address.
266	# the rest we have to restructure before fiddling. sigh
267	return 1 if $$addr->within($parnet);
268	} else {
269	# We don't have a complete IP in $$val (yet)
270	if ($parnet->addr =~ /:/) {
271	$$val =~ s/^:+//; # gotta strip'em all...
272	return __rev_overlay(':', $parnet, $val, $addr);
273	}
274	if ($parnet->addr =~ /\./) {
275	$$val =~ s/^\.+//;
276	return __rev_overlay('.', $parnet, $val, $addr);
277	}
278	# should be impossible to get here...
279	}
280	# ... and here.
281	# can't do nuttin' in forward zones
282	} # end _ipparent()
283
284	## DNSDB::_hostparent()
285	# A little different than _ipparent above; this tries to find the parent zone of a hostname
286	# Takes a database handle and hostname.
287	# Returns the domain ID of the parent domain if one was found.
288	sub _hostparent {
289	my $dbh = shift;
290	my $hname = shift;
291
292	my @hostbits = split /\./, $hname;
293	my $sth = $dbh->prepare("SELECT count(*),domain_id FROM domains WHERE domain = ? GROUP BY domain_id");
294	foreach (@hostbits) {
295	$sth->execute($hname);
296	my ($found, $parid) = $sth->fetchrow_array;
297	if ($found) {
298	return $parid;
299	}
300	$hname =~ s/^$_\.//;
301	}
302	} # end _hostparent()
303
304	## DNSDB::_log()
305	# Log an action
306	# Takes a database handle and log entry hash containing at least:
307	# group_id, log entry
308	# and optionally one or more of:
309	# domain_id, rdns_id
310	# The %userdata hash provides the user ID, username, and fullname
311	sub _log {
312	my $dbh = shift;
313
314	my %args = @_;
315
316	$args{rdns_id} = 0 if !$args{rdns_id};
317	$args{domain_id} = 0 if !$args{domain_id};
318
319	##fixme: farm out the actual logging to different subs for file, syslog, internal, etc based on config
320	# if ($config{log_channel} eq 'sql') {
321	$dbh->do("INSERT INTO log (domain_id,rdns_id,group_id,entry,user_id,email,name) VALUES (?,?,?,?,?,?,?)",
322	undef,
323	($args{domain_id}, $args{rdns_id}, $args{group_id}, $args{entry},
324	$userdata{userid}, $userdata{username}, $userdata{fullname}) );
325	# } elsif ($config{log_channel} eq 'file') {
326	# } elsif ($config{log_channel} eq 'syslog') {
327	# }
328	} # end _log
329
330
331	##
332	## Record validation subs.
333	##
334
335	## All of these subs take substantially the same arguments:
336	# a database handle
337	# a hash containing at least the following keys:
338	# - defrec (default/live flag)
339	# - revrec (forward/reverse flag)
340	# - id (parent entity ID)
341	# - host (hostname)
342	# - rectype
343	# - val (IP, hostname [CNAME/MX/SRV] or text)
344	# - addr (NetAddr::IP object from val. May be undef.)
345	# MX and SRV record validation also expect distance, and SRV records expect weight and port as well.
346	# host, rectype, and addr should be references as these may be modified in validation
347
348	# A record
349	sub _validate_1 {
350	my $dbh = shift;
351
352	my %args = @_;
353
354	return ('FAIL', 'Reverse zones cannot contain A records') if $args{revrec} eq 'y';
355
356	# Coerce all hostnames to end in ".DOMAIN" for group/default records,
357	# or the intended parent domain for live records.
358	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
359	${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
360
361	# Check IP is well-formed, and that it's a v4 address
362	# Fail on "compact" IPv4 variants, because they are not consistent and predictable.
363	return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
364	unless ${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/;
365	return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv4 address")
366	unless $args{addr} && !$args{addr}->{isv6};
367	# coerce IP/value to normalized form for storage
368	${$args{val}} = $args{addr}->addr;
369
370	return ('OK','OK');
371	} # done A record
372
373	# NS record
374	sub _validate_2 {
375	my $dbh = shift;
376
377	my %args = @_;
378
379	# Coerce the hostname to "DOMAIN" for forward default records, "ZONE" for reverse default records,
380	# or the intended parent zone for live records.
381	##fixme: allow for delegating <subdomain>.DOMAIN?
382	if ($args{revrec} eq 'y') {
383	my $pname = ($args{defrec} eq 'y' ? 'ZONE' : revName($dbh,$args{id}));
384	${$args{host}} = $pname if ${$args{host}} ne $pname;
385	} else {
386	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
387	${$args{host}} = $pname if ${$args{host}} ne $pname;
388	}
389
390	# Let this lie for now. Needs more magic.
391	# # Check IP is well-formed, and that it's a v4 address
392	# return ('FAIL',"A record must be a valid IPv4 address")
393	# unless $addr && !$addr->{isv6};
394	# # coerce IP/value to normalized form for storage
395	# $$val = $addr->addr;
396
397	return ('OK','OK');
398	} # done NS record
399
400	# CNAME record
401	sub _validate_5 {
402	my $dbh = shift;
403
404	my %args = @_;
405
406	# Not really true, but these are only useful for delegating smaller-than-/24 IP blocks.
407	# This is fundamentally a messy operation and should really just be taken care of by the
408	# export process, not manual maintenance of the necessary records.
409	return ('FAIL', 'Reverse zones cannot contain CNAME records') if $args{revrec} eq 'y';
410
411	# Coerce all hostnames to end in ".DOMAIN" for group/default records,
412	# or the intended parent domain for live records.
413	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
414	${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
415
416	return ('OK','OK');
417	} # done CNAME record
418
419	# SOA record
420	sub _validate_6 {
421	# Smart monkeys won't stick their fingers in here; we have
422	# separate dedicated routines to deal with SOA records.
423	return ('OK','OK');
424	} # done SOA record
425
426	# PTR record
427	sub _validate_12 {
428	my $dbh = shift;
429
430	my %args = @_;
431
432	if ($args{revrec} eq 'y') {
433	if ($args{defrec} eq 'n') {
434	return ('FAIL', "IP or IP fragment ${$args{val}} is not within ".revName($dbh, $args{id}))
435	unless _ipparent($dbh, $args{defrec}, $args{revrec}, $args{val}, $args{id}, \$args{addr});
436	${$args{val}} = $args{addr}->addr;
437	} else {
438	if (${$args{val}} =~ /\./) {
439	# looks like a v4 or fragment
440	if (${$args{val}} =~ /^\d+\.\d+\.\d+\.\d+$/) {
441	# woo! a complete IP! validate it and normalize, or fail.
442	$args{addr} = NetAddr::IP->new(${$args{val}})
443	or return ('FAIL', "IP/value looks like IPv4 but isn't valid");
444	${$args{val}} = $args{addr}->addr;
445	} else {
446	${$args{val}} =~ s/^\.*/ZONE./ unless ${$args{val}} =~ /^ZONE/;
447	}
448	} elsif (${$args{val}} =~ /[a-f:]/) {
449	# looks like a v6 or fragment
450	${$args{val}} =~ s/^:*/ZONE::/ if !$args{addr} && ${$args{val}} !~ /^ZONE/;
451	if ($args{addr}) {
452	if ($args{addr}->addr =~ /^0/) {
453	${$args{val}} =~ s/^:*/ZONE::/ unless ${$args{val}} =~ /^ZONE/;
454	} else {
455	${$args{val}} = $args{addr}->addr;
456	}
457	}
458	} else {
459	# bare number (probably). These could be v4 or v6, so we'll
460	# expand on these on creation of a reverse zone.
461	${$args{val}} = "ZONE,${$args{val}}" unless ${$args{val}} =~ /^ZONE/;
462	}
463	${$args{host}} =~ s/\.*$/\.$config{domain}/ if ${$args{host}} !~ /(?:$config{domain}\|ADMINDOMAIN)$/;
464	}
465
466	# Multiple PTR records do NOT generally do what most people believe they do,
467	# and tend to fail in the most awkward way possible. Check and warn.
468	# We use $val instead of $addr->addr since we may be in a defrec, and may have eg "ZONE::42" or "ZONE.12"
469
470	my @checkvals = (${$args{val}});
471	if (${$args{val}} =~ /,/) {
472	# push . and :: variants into checkvals if val has ,
473	my $tmp;
474	($tmp = ${$args{val}}) =~ s/,/./;
475	push @checkvals, $tmp;
476	($tmp = ${$args{val}}) =~ s/,/::/;
477	push @checkvals, $tmp;
478	}
479	my $pcsth = $dbh->prepare("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec})." WHERE val = ?");
480	foreach my $checkme (@checkvals) {
481	if ($args{update}) {
482	# Record update. There should usually be an existing PTR (the record being updated)
483	my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
484	" WHERE val = ?", undef, ($checkme)) };
485	return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
486	if @ptrs && (!grep /^$args{update}$/, @ptrs);
487	} else {
488	# New record. Always warn if a PTR exists
489	my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
490	" WHERE val = ?", undef, ($checkme));
491	return ('WARN', "PTR record for $checkme already exists; adding another will probably not do what you want")
492	if $ptrcount;
493	}
494	}
495
496	} else {
497	# Not absolutely true but only useful if you hack things up for sub-/24 v4 reverse delegations
498	# Simpler to just create the reverse zone and grant access for the customer to edit it, and create direct
499	# PTR records on export
500	return ('FAIL',"Forward zones cannot contain PTR records");
501	}
502
503	return ('OK','OK');
504	} # done PTR record
505
506	# MX record
507	sub _validate_15 {
508	my $dbh = shift;
509
510	my %args = @_;
511
512	# Not absolutely true but WTF use is an MX record for a reverse zone?
513	return ('FAIL', 'Reverse zones cannot contain MX records') if $args{revrec} eq 'y';
514
515	return ('FAIL', "Distance is required for MX records") unless defined(${$args{dist}});
516	${$args{dist}} =~ s/\s*//g;
517	return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
518
519	${$args{fields}} = "distance,";
520	push @{$args{vallist}}, ${$args{dist}};
521
522	# Coerce all hostnames to end in ".DOMAIN" for group/default records,
523	# or the intended parent domain for live records.
524	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
525	${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
526
527	# hmm.. this might work. except possibly for something pointing to "deadbeef.ca". <g>
528	# if ($type == $reverse_typemap{NS} \|\| $type == $reverse_typemap{MX} \|\| $type == $reverse_typemap{SRV}) {
529	# if ($val =~ /^\s[\da-f:.]+\s$/) {
530	# return ('FAIL',"$val is not a valid IP address") if !$addr;
531	# }
532	# }
533
534	return ('OK','OK');
535	} # done MX record
536
537	# TXT record
538	sub _validate_16 {
539	# Could arguably put a WARN return here on very long (>512) records
540	return ('OK','OK');
541	} # done TXT record
542
543	# RP record
544	sub _validate_17 {
545	# Probably have to validate these some day
546	return ('OK','OK');
547	} # done RP record
548
549	# AAAA record
550	sub _validate_28 {
551	my $dbh = shift;
552
553	my %args = @_;
554
555	return ('FAIL', 'Reverse zones cannot contain AAAA records') if $args{revrec} eq 'y';
556
557	# Coerce all hostnames to end in ".DOMAIN" for group/default records,
558	# or the intended parent domain for live records.
559	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
560	${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
561
562	# Check IP is well-formed, and that it's a v6 address
563	return ('FAIL',"$typemap{${$args{rectype}}} record must be a valid IPv6 address")
564	unless $args{addr} && $args{addr}->{isv6};
565	# coerce IP/value to normalized form for storage
566	${$args{val}} = $args{addr}->addr;
567
568	return ('OK','OK');
569	} # done AAAA record
570
571	# SRV record
572	sub _validate_33 {
573	my $dbh = shift;
574
575	my %args = @_;
576
577	# Not absolutely true but WTF use is an SRV record for a reverse zone?
578	return ('FAIL', 'Reverse zones cannot contain SRV records') if $args{revrec} eq 'y';
579
580	return ('FAIL', "Distance is required for SRV records") unless defined(${$args{dist}});
581	${$args{dist}} =~ s/\s*//g;
582	return ('FAIL',"Distance is required, and must be numeric") unless ${$args{dist}} =~ /^\d+$/;
583
584	return ('FAIL',"SRV records must begin with _service._protocol [${$args{host}}]")
585	unless ${$args{host}} =~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-zA-Z0-9-]+/;
586	return ('FAIL',"Port and weight are required for SRV records")
587	unless defined(${$args{weight}}) && defined(${$args{port}});
588	${$args{weight}} =~ s/\s*//g;
589	${$args{port}} =~ s/\s*//g;
590
591	return ('FAIL',"Port and weight are required, and must be numeric")
592	unless ${$args{weight}} =~ /^\d+$/ && ${$args{port}} =~ /^\d+$/;
593
594	${$args{fields}} = "distance,weight,port,";
595	push @{$args{vallist}}, (${$args{dist}}, ${$args{weight}}, ${$args{port}});
596
597	# Coerce all hostnames to end in ".DOMAIN" for group/default records,
598	# or the intended parent domain for live records.
599	my $pname = ($args{defrec} eq 'y' ? 'DOMAIN' : domainName($dbh,$args{id}));
600	${$args{host}} =~ s/\.*$/\.$pname/ if ${$args{host}} !~ /$pname$/;
601
602	return ('OK','OK');
603	} # done SRV record
604
605	# Now the custom types
606
607	# A+PTR record. With a very little bit of magic we can also use this sub to validate AAAA+PTR. Whee!
608	sub _validate_65280 {
609	my $dbh = shift;
610
611	my %args = @_;
612
613	my $code = 'OK';
614	my $msg = 'OK';
615
616	if ($args{defrec} eq 'n') {
617	# live record; revrec determines whether we validate the PTR or A component first.
618
619	if ($args{revrec} eq 'y') {
620	($code,$msg) = _validate_12($dbh, %args);
621	return ($code,$msg) if $code eq 'FAIL';
622
623	# Check if the reqested domain exists. If not, coerce the type down to PTR and warn.
624	if (!(${$args{domid}} = _hostparent($dbh, ${$args{host}}))) {
625	my $addmsg = "Record ".($args{update} ? 'updated' : 'added').
626	" as PTR instead of $typemap{${$args{rectype}}}; domain not found for ${$args{host}}";
627	$msg .= "\n$addmsg" if $code eq 'WARN';
628	$msg = $addmsg if $code eq 'OK';
629	${$args{rectype}} = $reverse_typemap{PTR};
630	return ('WARN', $msg);
631	}
632
633	# Add domain ID to field list and values
634	${$args{fields}} .= "domain_id,";
635	push @{$args{vallist}}, ${$args{domid}};
636
637	} else {
638	($code,$msg) = _validate_1($dbh, %args) if ${$args{rectype}} == 65280;
639	($code,$msg) = _validate_28($dbh, %args) if ${$args{rectype}} == 65281;
640	return ($code,$msg) if $code eq 'FAIL';
641
642	# Check if the requested reverse zone exists - note, an IP fragment won't
643	# work here since we don't know which parent to put it in.
644	# ${$args{val}} has been validated as a valid IP by now, in one of the above calls.
645	my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet >> ?".
646	" ORDER BY masklen(revnet) DESC", undef, (${$args{val}}));
647	if (!$revid) {
648	$msg = "Record ".($args{update} ? 'updated' : 'added')." as ".(${$args{rectype}} == 65280 ? 'A' : 'AAAA').
649	" instead of $typemap{${$args{rectype}}}; reverse zone not found for ${$args{val}}";
650	${$args{rectype}} = (${$args{rectype}} == 65280 ? $reverse_typemap{A} : $reverse_typemap{AAAA});
651	return ('WARN', $msg);
652	}
653
654	# Check for duplicate PTRs. Note we don't have to play games with $code and $msg, because
655	# by definition there can't be duplicate PTRs if the reverse zone isn't managed here.
656	if ($args{update}) {
657	# Record update. There should usually be an existing PTR (the record being updated)
658	my @ptrs = @{ $dbh->selectcol_arrayref("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
659	" WHERE val = ?", undef, (${$args{val}})) };
660	if (@ptrs && (!grep /^$args{update}$/, @ptrs)) {
661	$msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
662	$code = 'WARN';
663	}
664	} else {
665	# New record. Always warn if a PTR exists
666	my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
667	" WHERE val = ?", undef, (${$args{val}}));
668	$msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want"
669	if $ptrcount;
670	$code = 'WARN' if $ptrcount;
671	}
672
673	# my ($ptrcount) = $dbh->selectrow_array("SELECT count(*) FROM "._rectable($args{defrec},$args{revrec}).
674	# " WHERE val = ?", undef, ${$args{val}});
675	# if ($ptrcount) {
676	# my $curid = $dbh->selectrow_array("SELECT record_id FROM "._rectable($args{defrec},$args{revrec}).
677	# " WHERE val = ?
678	# $msg = "PTR record for ${$args{val}} already exists; adding another will probably not do what you want";
679	# $code = 'WARN';
680	# }
681
682	${$args{fields}} .= "rdns_id,";
683	push @{$args{vallist}}, $revid;
684	}
685
686	} else { # defrec eq 'y'
687	if ($args{revrec} eq 'y') {
688	($code,$msg) = _validate_12($dbh, %args);
689	return ($code,$msg) if $code eq 'FAIL';
690	if (${$args{rectype}} == 65280) {
691	return ('FAIL',"A+PTR record must be a valid IPv4 address or fragment")
692	if ${$args{val}} =~ /:/;
693	${$args{val}} =~ s/^ZONE,/ZONE./; # Clean up after uncertain IP-fragment-type from _validate_12
694	} elsif (${$args{rectype}} == 65281) {
695	return ('FAIL',"AAAA+PTR record must be a valid IPv6 address or fragment")
696	if ${$args{val}} =~ /\./;
697	${$args{val}} =~ s/^ZONE,/ZONE::/; # Clean up after uncertain IP-fragment-type from _validate_12
698	}
699	} else {
700	# This is easy. I also can't see a real use-case for A/AAAA+PTR in all forward
701	# domains, since you wouldn't be able to substitute both domain and reverse zone
702	# sanely, and you'd end up with guaranteed over-replicated PTR records that would
703	# confuse the hell out of pretty much anything that uses them.
704	##fixme: make this a config flag?
705	return ('FAIL', "$typemap{${$args{rectype}}} records not allowed in default domains");
706	}
707	}
708
709	return ($code, $msg);
710	} # done A+PTR record
711
712	# AAAA+PTR record
713	# A+PTR above has been magicked to handle AAAA+PTR as well.
714	sub _validate_65281 {
715	return _validate_65280(@_);
716	} # done AAAA+PTR record
717
718	# PTR template record
719	sub _validate_65282 {
720	return ('OK','OK');
721	} # done PTR template record
722
723	# A+PTR template record
724	sub _validate_65283 {
725	return ('OK','OK');
726	} # done AAAA+PTR template record
727
728	# AAAA+PTR template record
729	sub _validate_65284 {
730	return ('OK','OK');
731	} # done AAAA+PTR template record
732
733
734	##
735	## Record data substitution subs
736	##
737
738	# Replace ZONE in hostname
739	sub _ZONE {
740	my $zone = shift;
741	my $string = shift;
742	my $fr = shift \|\| 'f'; # flag for forward/reverse order? nb: ignored for IP
743
744	my $prefix = $zone->network->addr; # Just In Case someone managed to slip in
745	# a funky subnet that had host bits set.
746
747	$string =~ s/,/./ if !$zone->{isv6};
748	$string =~ s/,/::/ if $zone->{isv6};
749
750	# if ($zone->{isv6} && ($zone->masklen % 4) != 0) {
751	# # grumpyfail, non-nibble zone. shouldn't happen
752	# return;
753	# }
754
755	# Subbing ZONE in the host. We need to properly ID the netblock range
756	# The subbed text should have "network IP with trailing zeros stripped" for
757	# blocks lined up on octet (for v4) or 16-bit (for v6) boundaries
758	# For blocks that do NOT line up on these boundaries, we tack on an extra "-0",
759	# then take the most significant octet or 16-bit chunk of the "broadcast" IP and
760	# append it after a double-dash
761	# ie:
762	# 8.0.0.0/6 -> 8.0.0.0 -> 11.255.255.255; sub should be 8--11
763	# 10.0.0.0/12 -> 10.0.0.0 -> 10.0.0.0 -> 10.15.255.255; sub should be 10-0--15
764	# 192.168.4.0/22 -> 192.168.4.0 -> 192.168.7.255; sub should be 192-168-4--7
765	# 192.168.0.8/29 -> 192.168.0.8 -> 192.168.0.15; sub should be 192-168-0-8--15
766	# Similar for v6
767	if (!$zone->{isv6}) {
768	my $bc = $zone->broadcast->addr;
769	if ($zone->masklen > 24) {
770	$bc =~ s/^\d+\.\d+\.\d+\.//;
771	} elsif ($zone->masklen > 16) {
772	$prefix =~ s/\.0$//;
773	$bc =~ s/^\d+\.\d+\.//;
774	} elsif ($zone->masklen > 8) {
775	$bc =~ s/^\d+\.//;
776	$prefix =~ s/\.0\.0$//;
777	} else {
778	$prefix =~ s/\.0\.0\.0$//;
779	}
780	if ($zone->masklen % 8) {
781	$bc =~ s/(\.255)+$//;
782	$prefix .= "--$bc"; #"--".zone->masklen; # use range or mask length?
783	}
784	} else {
785	if (($zone->masklen % 16) != 0) {
786	# Strip trailing :0 off $prefix, and :ffff off the broadcast IP
787	# Strip the leading 16-bit chunks off the front of the broadcast IP
788	# Append the remaining 16-bit chunk to the prefix after "--"
789	my $bc = $zone->broadcast->addr;
790	for (my $i=0; $i<(7-int($zone->masklen / 16)); $i++) {
791	$prefix =~ s/:0$//;
792	$bc =~ s/:ffff$//;
793	}
794	$bc =~ s/^([a-f0-9]+:)+//;
795	$prefix .= "--$bc";
796	} else {
797	# Strip off :0 from the end until we reach the netblock length.
798	for (my $i=0; $i<(8-$zone->masklen / 16); $i++) {
799	$prefix =~ s/:0$//;
800	}
801	}
802	}
803
804	# Replace . and : with -
805	# If flagged for reverse-order, split on . or :, reverse, and join with -
806	if ($fr eq 'f') {
807	$prefix =~ s/[:.]+/-/g;
808	} else {
809	$prefix = join('-', reverse(split(/[:.]/, $prefix)));
810	}
811	$string =~ s/ZONE/$prefix/;
812	# }
813	return $string;
814	} # done _ZONE
815
816
817
818	##
819	## Initialization and cleanup subs
820	##
821
822
823	## DNSDB::loadConfig()
824	# Load the minimum required initial state (DB connect info) from a config file
825	# Load misc other bits while we're at it.
826	# Takes an optional basename and config path to look for
827	# Populates the %config and %def hashes
828	sub loadConfig {
829	my $basename = shift \|\| ''; # this will work OK
830	##fixme $basename isn't doing what I think I thought I was trying to do.
831
832	my $deferr = ''; # place to put error from default config file in case we can't find either one
833
834	my $configroot = "/etc/dnsdb"; ##CFG_LEAF##
835	$configroot = '' if $basename =~ m\|^/\|;
836	$basename .= ".conf" if $basename !~ /\.conf$/;
837	my $defconfig = "$configroot/dnsdb.conf";
838	my $siteconfig = "$configroot/$basename";
839
840	# System defaults
841	__cfgload("$defconfig") or $deferr = $errstr;
842
843	# Per-site-ish settings.
844	if ($basename ne '.conf') {
845	unless (__cfgload("$siteconfig")) {
846	$errstr = ($deferr ? "Error opening default config file $defconfig: $deferr\n" : '').
847	"Error opening site config file $siteconfig";
848	return;
849	}
850	}
851
852	# Munge log_failures.
853	if ($config{log_failures} ne '1' && $config{log_failures} ne '0') {
854	# true/false, on/off, yes/no all valid.
855	if ($config{log_failures} =~ /^(?:true\|false\|on\|off\|yes\|no)$/) {
856	if ($config{log_failures} =~ /(?:true\|on\|yes)/) {
857	$config{log_failures} = 1;
858	} else {
859	$config{log_failures} = 0;
860	}
861	} else {
862	$errstr = "Bad log_failures setting $config{log_failures}";
863	$config{log_failures} = 1;
864	# Bad setting shouldn't be fatal.
865	# return 2;
866	}
867	}
868
869	# All good, clear the error and go home.
870	$errstr = '';
871	return 1;
872	} # end loadConfig()
873
874
875	## DNSDB::__cfgload()
876	# Private sub to parse a config file and load it into %config
877	# Takes a file handle on an open config file
878	sub __cfgload {
879	$errstr = '';
880	my $cfgfile = shift;
881
882	if (open CFG, "<$cfgfile") {
883	while (<CFG>) {
884	chomp;
885	s/^\s*//;
886	next if /^#/;
887	next if /^$/;
888	# hmm. more complex bits in this file might require [heading] headers, maybe?
889	# $mode = $1 if /^\[(a-z)+]/;
890	# DB connect info
891	$config{dbname} = $1 if /^dbname\s=\s([a-z0-9_.-]+)/i;
892	$config{dbuser} = $1 if /^dbuser\s=\s([a-z0-9_.-]+)/i;
893	$config{dbpass} = $1 if /^dbpass\s=\s([a-z0-9_.-]+)/i;
894	$config{dbhost} = $1 if /^dbhost\s=\s([a-z0-9_.-]+)/i;
895	# SOA defaults
896	$def{contact} = $1 if /^contact\s=\s([a-z0-9_.-]+)/i;
897	$def{prins} = $1 if /^prins\s=\s([a-z0-9_.-]+)/i;
898	$def{soattl} = $1 if /^soattl\s=\s(\d+)/i;
899	$def{refresh} = $1 if /^refresh\s=\s(\d+)/i;
900	$def{retry} = $1 if /^retry\s=\s(\d+)/i;
901	$def{expire} = $1 if /^expire\s=\s(\d+)/i;
902	$def{minttl} = $1 if /^minttl\s=\s(\d+)/i;
903	$def{ttl} = $1 if /^ttl\s=\s(\d+)/i;
904	# Mail settings
905	$config{mailhost} = $1 if /^mailhost\s=\s([a-z0-9_.-]+)/i;
906	$config{mailnotify} = $1 if /^mailnotify\s=\s([a-z0-9_.\@-]+)/i;
907	$config{mailsender} = $1 if /^mailsender\s=\s([a-z0-9_.\@-]+)/i;
908	$config{mailname} = $1 if /^mailname\s=\s([a-z0-9\s_.-]+)/i;
909	$config{orgname} = $1 if /^orgname\s=\s([a-z0-9\s_.,'-]+)/i;
910	$config{domain} = $1 if /^domain\s=\s([a-z0-9_.-]+)/i;
911	# session - note this is fed directly to CGI::Session
912	$config{timeout} = $1 if /^[tT][iI][mM][eE][oO][uU][tT]\s=\s(\d+[smhdwMy]?)/;
913	$config{sessiondir} = $1 if m{^sessiondir\s=\s([a-z0-9/_.-]+)}i;
914	# misc
915	$config{log_failures} = $1 if /^log_failures\s=\s([a-z01]+)/i;
916	$config{perpage} = $1 if /^perpage\s=\s(\d+)/i;
917	}
918	close CFG;
919	} else {
920	$errstr = $!;
921	return;
922	}
923	return 1;
924	} # end __cfgload()
925
926
927	## DNSDB::connectDB()
928	# Creates connection to DNS database.
929	# Requires the database name, username, and password.
930	# Returns a handle to the db.
931	# Set up for a PostgreSQL db; could be any transactional DBMS with the
932	# right changes.
933	sub connectDB {
934	$errstr = '';
935	my $dbname = shift;
936	my $user = shift;
937	my $pass = shift;
938	my $dbh;
939	my $DSN = "DBI:Pg:dbname=$dbname";
940
941	my $host = shift;
942	$DSN .= ";host=$host" if $host;
943
944	# Note that we want to autocommit by default, and we will turn it off locally as necessary.
945	# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
946	$dbh = DBI->connect($DSN, $user, $pass, {
947	AutoCommit => 1,
948	PrintError => 0
949	})
950	or return (undef, $DBI::errstr) if(!$dbh);
951
952	##fixme: initialize the DB if we can't find the table (since, by definition, there's
953	# nothing there if we can't select from it...)
954	my $tblsth = $dbh->prepare("SELECT count(*) FROM pg_catalog.pg_class WHERE relkind='r' AND relname=?");
955	my ($tblcount) = $dbh->selectrow_array($tblsth, undef, ('misc'));
956	return (undef,$DBI::errstr) if $dbh->err;
957
958	#if ($tblcount == 0) {
959	# # create tables one at a time, checking for each.
960	# return (undef, "check table misc missing");
961	#}
962
963
964	# Return here if we can't select.
965	# This should retrieve the dbversion key.
966	my $sth = $dbh->prepare("SELECT key,value FROM misc WHERE misc_id=1");
967	$sth->execute();
968	return (undef,$DBI::errstr) if ($sth->err);
969
970	##fixme: do stuff to the DB on version mismatch
971	# x.y series should upgrade on $DNSDB::VERSION > misc(key=>version)
972	# DB should be downward-compatible; column defaults should give sane (if possibly
973	# useless-and-needs-help) values in columns an older software stack doesn't know about.
974
975	# See if the select returned anything (or null data). This should
976	# succeed if the select executed, but...
977	$sth->fetchrow();
978	return (undef,$DBI::errstr) if ($sth->err);
979
980	$sth->finish;
981
982	# If we get here, we should be OK.
983	return ($dbh,"DB connection OK");
984	} # end connectDB
985
986
987	## DNSDB::finish()
988	# Cleans up after database handles and so on.
989	# Requires a database handle
990	sub finish {
991	my $dbh = $_[0];
992	$dbh->disconnect;
993	} # end finish
994
995
996	## DNSDB::initGlobals()
997	# Initialize global variables
998	# NB: this does NOT include web-specific session variables!
999	# Requires a database handle
1000	sub initGlobals {
1001	my $dbh = shift;
1002
1003	# load record types from database
1004	my $sth = $dbh->prepare("SELECT val,name,stdflag FROM rectypes");
1005	$sth->execute;
1006	while (my ($recval,$recname,$stdflag) = $sth->fetchrow_array()) {
1007	$typemap{$recval} = $recname;
1008	$reverse_typemap{$recname} = $recval;
1009	# now we fill the record validation function hash
1010	if ($stdflag < 5) {
1011	my $fn = "_validate_$recval";
1012	$validators{$recval} = \&$fn;
1013	} else {
1014	my $fn = "sub { return ('FAIL','Type $recval ($recname) not supported'); }";
1015	$validators{$recval} = eval $fn;
1016	}
1017	}
1018	} # end initGlobals
1019
1020
1021	## DNSDB::login()
1022	# Takes a database handle, username and password
1023	# Returns a userdata hash (UID, GID, username, fullname parts) if username exists
1024	# and password matches the one on file
1025	# Returns undef otherwise
1026	sub login {
1027	my $dbh = shift;
1028	my $user = shift;
1029	my $pass = shift;
1030
1031	my $userinfo = $dbh->selectrow_hashref("SELECT user_id,group_id,password,firstname,lastname FROM users WHERE username=?",
1032	undef, ($user) );
1033	return if !$userinfo;
1034
1035	if ($userinfo->{password} =~ m\|^\$1\$([A-Za-z0-9/.]+)\$\|) {
1036	# native passwords (crypt-md5)
1037	return if $userinfo->{password} ne unix_md5_crypt($pass,$1);
1038	} elsif ($userinfo->{password} =~ /^[0-9a-f]{32}$/) {
1039	# VegaDNS import (hex-coded MD5)
1040	return if $userinfo->{password} ne md5_hex($pass);
1041	} else {
1042	# plaintext (convenient now and then)
1043	return if $userinfo->{password} ne $pass;
1044	}
1045
1046	return $userinfo;
1047	} # end login()
1048
1049
1050	## DNSDB::initActionLog()
1051	# Set up action logging. Takes a database handle and user ID
1052	# Sets some internal globals and Does The Right Thing to set up a logging channel.
1053	# This sets up _log() to spew out log entries to the defined channel without worrying
1054	# about having to open a file or a syslog channel
1055	##fixme Need to call _initActionLog_blah() for various logging channels, configured
1056	# via dnsdb.conf, in $config{log_channel} or something
1057	# See https://secure.deepnet.cx/trac/dnsadmin/ticket/21
1058	sub initActionLog {
1059	my $dbh = shift;
1060	my $uid = shift;
1061
1062	return if !$uid;
1063
1064	# snag user info for logging. there's got to be a way to not have to pass this back
1065	# and forth from a caller, but web usage means no persistence we can rely on from
1066	# the server side.
1067	my ($username,$fullname) = $dbh->selectrow_array("SELECT username, firstname \|\| ' ' \|\| lastname".
1068	" FROM users WHERE user_id=?", undef, ($uid));
1069	##fixme: errors are unpossible!
1070
1071	$userdata{username} = $username;
1072	$userdata{userid} = $uid;
1073	$userdata{fullname} = $fullname;
1074
1075	# convert to real check once we have other logging channels
1076	# if ($config{log_channel} eq 'sql') {
1077	# Open Log, Sez Me!
1078	# }
1079
1080	} # end initActionLog
1081
1082
1083	## DNSDB::initPermissions()
1084	# Set up permissions global
1085	# Takes database handle and UID
1086	sub initPermissions {
1087	my $dbh = shift;
1088	my $uid = shift;
1089
1090	# %permissions = $(getPermissions($dbh,'user',$uid));
1091	getPermissions($dbh, 'user', $uid, \%permissions);
1092
1093	} # end initPermissions()
1094
1095
1096	## DNSDB::getPermissions()
1097	# Get permissions from DB
1098	# Requires DB handle, group or user flag, ID, and hashref.
1099	sub getPermissions {
1100	my $dbh = shift;
1101	my $type = shift;
1102	my $id = shift;
1103	my $hash = shift;
1104
1105	my $sql = qq(
1106	SELECT
1107	p.admin,p.self_edit,
1108	p.group_create,p.group_edit,p.group_delete,
1109	p.user_create,p.user_edit,p.user_delete,
1110	p.domain_create,p.domain_edit,p.domain_delete,
1111	p.record_create,p.record_edit,p.record_delete
1112	FROM permissions p
1113	);
1114	if ($type eq 'group') {
1115	$sql .= qq(
1116	JOIN groups g ON g.permission_id=p.permission_id
1117	WHERE g.group_id=?
1118	);
1119	} else {
1120	$sql .= qq(
1121	JOIN users u ON u.permission_id=p.permission_id
1122	WHERE u.user_id=?
1123	);
1124	}
1125
1126	my $sth = $dbh->prepare($sql);
1127
1128	$sth->execute($id) or die "argh: ".$sth->errstr;
1129
1130	# my $permref = $sth->fetchrow_hashref;
1131	# return $permref;
1132	# $hash = $permref;
1133	# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
1134	($hash->{admin},$hash->{self_edit},
1135	$hash->{group_create},$hash->{group_edit},$hash->{group_delete},
1136	$hash->{user_create},$hash->{user_edit},$hash->{user_delete},
1137	$hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
1138	$hash->{record_create},$hash->{record_edit},$hash->{record_delete})
1139	= $sth->fetchrow_array;
1140
1141	} # end getPermissions()
1142
1143
1144	## DNSDB::changePermissions()
1145	# Update an ACL entry
1146	# Takes a db handle, type, owner-id, and hashref for the changed permissions.
1147	sub changePermissions {
1148	my $dbh = shift;
1149	my $type = shift;
1150	my $id = shift;
1151	my $newperms = shift;
1152	my $inherit = shift \|\| 0;
1153
1154	my $resultmsg = '';
1155
1156	# see if we're switching from inherited to custom. for bonus points,
1157	# snag the permid and parent permid anyway, since we'll need the permid
1158	# to set/alter custom perms, and both if we're switching from custom to
1159	# inherited.
1160	my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id,".
1161	($type eq 'user' ? 'u.group_id,u.username' : 'u.parent_group_id,u.group_name').
1162	" FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
1163	" JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
1164	" WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
1165	$sth->execute($id);
1166
1167	my ($wasinherited,$permid,$parpermid,$parid,$name) = $sth->fetchrow_array;
1168
1169	# hack phtoui
1170	# group id 1 is "special" in that it's it's own parent (err... possibly.)
1171	# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
1172	$wasinherited = 0 if ($type eq 'group' && $id == 1);
1173
1174	local $dbh->{AutoCommit} = 0;
1175	local $dbh->{RaiseError} = 1;
1176
1177	# Wrap all the SQL in a transaction
1178	eval {
1179	if ($inherit) {
1180
1181	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
1182	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
1183	$dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
1184
1185	} else {
1186
1187	if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
1188	##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
1189	# ... if'n'when we have groups with fully inherited permissions.
1190	# SQL is coo
1191	$dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
1192	"SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
1193	($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
1194	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
1195	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
1196	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
1197	}
1198
1199	# and now set the permissions we were passed
1200	foreach (@permtypes) {
1201	if (defined ($newperms->{$_})) {
1202	$dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
1203	}
1204	}
1205
1206	} # (inherited->)? custom
1207
1208	if ($type eq 'user') {
1209	$resultmsg = "Updated permissions for user $name";
1210	} else {
1211	$resultmsg = "Updated default permissions for group $name";
1212	}
1213	_log($dbh, (group_id => ($type eq 'user' ? $parid : $id), entry => $resultmsg));
1214	$dbh->commit;
1215	}; # end eval
1216	if ($@) {
1217	my $msg = $@;
1218	eval { $dbh->rollback; };
1219	return ('FAIL',"Error changing permissions: $msg");
1220	}
1221
1222	return ('OK',$resultmsg);
1223	} # end changePermissions()
1224
1225
1226	## DNSDB::comparePermissions()
1227	# Compare two permission hashes
1228	# Returns '>', '<', '=', '!'
1229	sub comparePermissions {
1230	my $p1 = shift;
1231	my $p2 = shift;
1232
1233	my $retval = '='; # assume equality until proven otherwise
1234
1235	no warnings "uninitialized";
1236
1237	foreach (@permtypes) {
1238	next if $p1->{$_} == $p2->{$_}; # equal is good
1239	if ($p1->{$_} && !$p2->{$_}) {
1240	if ($retval eq '<') { # if we've already found an unequal pair where
1241	$retval = '!'; # $p2 has more access, and we now find a pair
1242	last; # where $p1 has more access, the overall access
1243	} # is neither greater or lesser, it's unequal.
1244	$retval = '>';
1245	}
1246	if (!$p1->{$_} && $p2->{$_}) {
1247	if ($retval eq '>') { # if we've already found an unequal pair where
1248	$retval = '!'; # $p1 has more access, and we now find a pair
1249	last; # where $p2 has more access, the overall access
1250	} # is neither greater or lesser, it's unequal.
1251	$retval = '<';
1252	}
1253	}
1254	return $retval;
1255	} # end comparePermissions()
1256
1257
1258	## DNSDB::changeGroup()
1259	# Change group ID of an entity
1260	# Takes a database handle, entity type, entity ID, and new group ID
1261	sub changeGroup {
1262	my $dbh = shift;
1263	my $type = shift;
1264	my $id = shift;
1265	my $newgrp = shift;
1266
1267	##fixme: fail on not enough args
1268	#return ('FAIL', "Missing
1269
1270	return ('FAIL', "Can't change the group of a $type")
1271	unless grep /^$type$/, ('domain','revzone','user','group'); # could be extended for defrecs?
1272
1273	# Collect some names for logging and messages
1274	my $entname;
1275	if ($type eq 'domain') {
1276	$entname = domainName($dbh, $id);
1277	} elsif ($type eq 'revzone') {
1278	$entname = revName($dbh, $id);
1279	} elsif ($type eq 'user') {
1280	$entname = userFullName($dbh, $id, '%u');
1281	} elsif ($type eq 'group') {
1282	$entname = groupName($dbh, $id);
1283	}
1284
1285	my ($oldgid) = $dbh->selectrow_array("SELECT group_id FROM $par_tbl{$type} WHERE $id_col{$type}=?",
1286	undef, ($id));
1287	my $oldgname = groupName($dbh, $oldgid);
1288	my $newgname = groupName($dbh, $newgrp);
1289
1290	return ('FAIL', "Can't move things into a group that doesn't exist") if !$newgname;
1291
1292	return ('WARN', "Nothing to do, new group is the same as the old group") if $oldgid == $newgrp;
1293
1294	# Allow transactions, and raise an exception on errors so we can catch it later.
1295	# Use local to make sure these get "reset" properly on exiting this block
1296	local $dbh->{AutoCommit} = 0;
1297	local $dbh->{RaiseError} = 1;
1298
1299	eval {
1300	$dbh->do("UPDATE $par_tbl{$type} SET group_id=? WHERE $id_col{$type}=?", undef, ($newgrp, $id));
1301	# Log the change in both the old and new groups
1302	_log($dbh, (group_id => $oldgid, entry => "Moved $type $entname from $oldgname to $newgname"));
1303	_log($dbh, (group_id => $newgrp, entry => "Moved $type $entname from $oldgname to $newgname"));
1304	$dbh->commit;
1305	};
1306	if ($@) {
1307	my $msg = $@;
1308	eval { $dbh->rollback; };
1309	if ($config{log_failures}) {
1310	_log($dbh, (group_id => $oldgid, entry => "Error moving $type $entname to $newgname: $msg"));
1311	$dbh->commit; # since we enabled transactions earlier
1312	}
1313	return ('FAIL',"Error moving $type $entname to $newgname: $msg");
1314	}
1315
1316	return ('OK',"Moved $type $entname from $oldgname to $newgname");
1317	} # end changeGroup()
1318
1319
1320	##
1321	## Processing subs
1322	##
1323
1324	## DNSDB::addDomain()
1325	# Add a domain
1326	# Takes a database handle, domain name, numeric group, boolean(ish) state (active/inactive),
1327	# and user info hash (for logging).
1328	# Returns a status code and message
1329	sub addDomain {
1330	$errstr = '';
1331	my $dbh = shift;
1332	return ('FAIL',"Need database handle") if !$dbh;
1333	my $domain = shift;
1334	return ('FAIL',"Domain must not be blank") if !$domain;
1335	my $group = shift;
1336	return ('FAIL',"Need group") if !defined($group);
1337	my $state = shift;
1338	return ('FAIL',"Need domain status") if !defined($state);
1339
1340	my %userinfo = @_; # remaining bits.
1341	# user ID, username, user full name
1342
1343	$state = 1 if $state =~ /^active$/;
1344	$state = 1 if $state =~ /^on$/;
1345	$state = 0 if $state =~ /^inactive$/;
1346	$state = 0 if $state =~ /^off$/;
1347
1348	return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/;
1349
1350	return ('FAIL', "Invalid characters in domain") if $domain !~ /^[a-zA-Z0-9_.-]+$/;
1351
1352	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
1353	my $dom_id;
1354
1355	# quick check to start to see if we've already got one
1356	$sth->execute($domain);
1357	($dom_id) = $sth->fetchrow_array;
1358
1359	return ('FAIL', "Domain already exists") if $dom_id;
1360
1361	# Allow transactions, and raise an exception on errors so we can catch it later.
1362	# Use local to make sure these get "reset" properly on exiting this block
1363	local $dbh->{AutoCommit} = 0;
1364	local $dbh->{RaiseError} = 1;
1365
1366	# Wrap all the SQL in a transaction
1367	eval {
1368	# insert the domain...
1369	$dbh->do("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)", undef, ($domain, $group, $state));
1370
1371	# get the ID...
1372	($dom_id) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE domain=?", undef, ($domain));
1373
1374	_log($dbh, (domain_id => $dom_id, group_id => $group,
1375	entry => "Added ".($state ? 'active' : 'inactive')." domain $domain"));
1376
1377	# ... and now we construct the standard records from the default set. NB: group should be variable.
1378	my $sth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
1379	my $sth_in = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,distance,weight,port,ttl)".
1380	" VALUES ($dom_id,?,?,?,?,?,?,?)");
1381	$sth->execute($group);
1382	while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $sth->fetchrow_array()) {
1383	$host =~ s/DOMAIN/$domain/g;
1384	$val =~ s/DOMAIN/$domain/g;
1385	$sth_in->execute($host,$type,$val,$dist,$weight,$port,$ttl);
1386	if ($typemap{$type} eq 'SOA') {
1387	my @tmp1 = split /:/, $host;
1388	my @tmp2 = split /:/, $val;
1389	_log($dbh, (domain_id => $dom_id, group_id => $group,
1390	entry => "[new $domain] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
1391	"[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl"));
1392	} else {
1393	my $logentry = "[new $domain] Added record '$host $typemap{$type}";
1394	$logentry .= " [distance $dist]" if $typemap{$type} eq 'MX';
1395	$logentry .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$type} eq 'SRV';
1396	_log($dbh, (domain_id => $dom_id, group_id => $group,
1397	entry => $logentry." $val', TTL $ttl"));
1398	}
1399	}
1400
1401	# once we get here, we should have suceeded.
1402	$dbh->commit;
1403	}; # end eval
1404
1405	if ($@) {
1406	my $msg = $@;
1407	eval { $dbh->rollback; };
1408	_log($dbh, (group_id => $group, entry => "Failed adding domain $domain ($msg)"))
1409	if $config{log_failures};
1410	$dbh->commit; # since we enabled transactions earlier
1411	return ('FAIL',$msg);
1412	} else {
1413	return ('OK',$dom_id);
1414	}
1415	} # end addDomain
1416
1417
1418	## DNSDB::delZone()
1419	# Delete a forward or reverse zone.
1420	# Takes a database handle, zone ID, and forward/reverse flag.
1421	# for now, just delete the records, then the domain.
1422	# later we may want to archive it in some way instead (status code 2, for example?)
1423	sub delZone {
1424	my $dbh = shift;
1425	my $zoneid = shift;
1426	my $revrec = shift;
1427
1428	# Allow transactions, and raise an exception on errors so we can catch it later.
1429	# Use local to make sure these get "reset" properly on exiting this block
1430	local $dbh->{AutoCommit} = 0;
1431	local $dbh->{RaiseError} = 1;
1432
1433	my $msg = '';
1434	my $failmsg = '';
1435	my $zone = ($revrec eq 'n' ? domainName($dbh, $zoneid) : revName($dbh, $zoneid));
1436
1437	# Set this up here since we may use if if $config{log_failures} is enabled
1438	my %loghash;
1439	$loghash{domain_id} = $zoneid if $revrec eq 'n';
1440	$loghash{rdns_id} = $zoneid if $revrec eq 'y';
1441	$loghash{group_id} = parentID($dbh,
1442	(id => $zoneid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) );
1443
1444	# Wrap all the SQL in a transaction
1445	eval {
1446	# Disentangle custom record types before removing the
1447	# ones that are only in the zone to be deleted
1448	if ($revrec eq 'n') {
1449	my $sth = $dbh->prepare("UPDATE records SET type=?,domain_id=0 WHERE domain_id=? AND type=?");
1450	$failmsg = "Failure converting multizone types to single-zone";
1451	$sth->execute($reverse_typemap{PTR}, $zoneid, 65280);
1452	$sth->execute($reverse_typemap{PTR}, $zoneid, 65281);
1453	$sth->execute(65282, $zoneid, 65283);
1454	$sth->execute(65282, $zoneid, 65284);
1455	$failmsg = "Failure removing domain records";
1456	$dbh->do("DELETE FROM records WHERE domain_id=?", undef, ($zoneid));
1457	$failmsg = "Failure removing domain";
1458	$dbh->do("DELETE FROM domains WHERE domain_id=?", undef, ($zoneid));
1459	} else {
1460	my $sth = $dbh->prepare("UPDATE records SET type=?,rdns_id=0 WHERE rdns_id=? AND type=?");
1461	$failmsg = "Failure converting multizone types to single-zone";
1462	$sth->execute($reverse_typemap{A}, $zoneid, 65280);
1463	$sth->execute($reverse_typemap{AAAA}, $zoneid, 65281);
1464	# We don't have an "A template" or "AAAA template" type, although it might be useful for symmetry.
1465	# $sth->execute(65285?, $zoneid, 65283);
1466	# $sth->execute(65285?, $zoneid, 65284);
1467	$failmsg = "Failure removing reverse records";
1468	$dbh->do("DELETE FROM records WHERE rdns_id=?", undef, ($zoneid));
1469	$failmsg = "Failure removing reverse zone";
1470	$dbh->do("DELETE FROM revzones WHERE rdns_id=?", undef, ($zoneid));
1471	}
1472
1473	$msg = "Deleted ".($revrec eq 'n' ? 'domain' : 'reverse zone')." $zone";
1474	$loghash{entry} = $msg;
1475	_log($dbh, %loghash);
1476
1477	# once we get here, we should have suceeded.
1478	$dbh->commit;
1479	}; # end eval
1480
1481	if ($@) {
1482	$msg = $@;
1483	eval { $dbh->rollback; };
1484	$loghash{entry} = "Error deleting $zone: $msg ($failmsg)";
1485	if ($config{log_failures}) {
1486	_log($dbh, %loghash);
1487	$dbh->commit; # since we enabled transactions earlier
1488	}
1489	return ('FAIL', $loghash{entry});
1490	} else {
1491	return ('OK', $msg);
1492	}
1493
1494	} # end delZone()
1495
1496
1497	## DNSDB::domainName()
1498	# Return the domain name based on a domain ID
1499	# Takes a database handle and the domain ID
1500	# Returns the domain name or undef on failure
1501	sub domainName {
1502	$errstr = '';
1503	my $dbh = shift;
1504	my $domid = shift;
1505	my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
1506	$errstr = $DBI::errstr if !$domname;
1507	return $domname if $domname;
1508	} # end domainName()
1509
1510
1511	## DNSDB::revName()
1512	# Return the reverse zone name based on an rDNS ID
1513	# Takes a database handle and the rDNS ID
1514	# Returns the reverse zone name or undef on failure
1515	sub revName {
1516	$errstr = '';
1517	my $dbh = shift;
1518	my $revid = shift;
1519	my ($revname) = $dbh->selectrow_array("SELECT revnet FROM revzones WHERE rdns_id=?", undef, ($revid) );
1520	$errstr = $DBI::errstr if !$revname;
1521	return $revname if $revname;
1522	} # end revName()
1523
1524
1525	## DNSDB::domainID()
1526	# Takes a database handle and domain name
1527	# Returns the domain ID number
1528	sub domainID {
1529	$errstr = '';
1530	my $dbh = shift;
1531	my $domain = shift;
1532	my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE domain=?", undef, ($domain) );
1533	$errstr = $DBI::errstr if !$domid;
1534	return $domid if $domid;
1535	} # end domainID()
1536
1537
1538	## DNSDB::revID()
1539	# Takes a database handle and reverse zone name
1540	# Returns the rDNS ID number
1541	sub revID {
1542	$errstr = '';
1543	my $dbh = shift;
1544	my $revzone = shift;
1545	my ($revid) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revnet=?", undef, ($revzone) );
1546	$errstr = $DBI::errstr if !$revid;
1547	return $revid if $revid;
1548	} # end revID()
1549
1550
1551	## DNSDB::addRDNS
1552	# Adds a reverse DNS zone
1553	# Takes a database handle, CIDR block, reverse DNS pattern, numeric group,
1554	# and boolean(ish) state (active/inactive)
1555	# Returns a status code and message
1556	sub addRDNS {
1557	my $dbh = shift;
1558	my $zone = NetAddr::IP->new(shift);
1559	return ('FAIL',"Zone name must be a valid CIDR netblock") unless ($zone && $zone->addr !~ /^0/);
1560	my $revpatt = shift; # construct a custom (A/AAAA+)? PTR template record
1561	my $group = shift;
1562	my $state = shift;
1563
1564	$state = 1 if $state =~ /^active$/;
1565	$state = 1 if $state =~ /^on$/;
1566	$state = 0 if $state =~ /^inactive$/;
1567	$state = 0 if $state =~ /^off$/;
1568
1569	return ('FAIL',"Invalid zone status") if $state !~ /^\d+$/;
1570
1571	# quick check to start to see if we've already got one
1572	my ($rdns_id) = $dbh->selectrow_array("SELECT rdns_id FROM revzones WHERE revzone=?", undef, ("$zone"));
1573
1574	return ('FAIL', "Zone already exists") if $rdns_id;
1575
1576	# Allow transactions, and raise an exception on errors so we can catch it later.
1577	# Use local to make sure these get "reset" properly on exiting this block
1578	local $dbh->{AutoCommit} = 0;
1579	local $dbh->{RaiseError} = 1;
1580
1581	my $warnstr = '';
1582	my $defttl = 3600; # 1 hour should be reasonable. And unless things have gone horribly
1583	# wrong, we should have a value to override this anyway.
1584
1585	# Wrap all the SQL in a transaction
1586	eval {
1587	# insert the domain...
1588	$dbh->do("INSERT INTO revzones (revnet,group_id,status) VALUES (?,?,?)", undef, ($zone, $group, $state));
1589
1590	# get the ID...
1591	($rdns_id) = $dbh->selectrow_array("SELECT currval('revzones_rdns_id_seq')");
1592
1593	_log($dbh, (rdns_id => $rdns_id, group_id => $group,
1594	entry => "Added ".($state ? 'active' : 'inactive')." reverse zone $zone"));
1595
1596	# ... and now we construct the standard records from the default set. NB: group should be variable.
1597	my $sth = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
1598	my $sth_in = $dbh->prepare("INSERT INTO records (rdns_id,domain_id,host,type,val,ttl)".
1599	" VALUES ($rdns_id,?,?,?,?,?)");
1600	$sth->execute($group);
1601	while (my ($host,$type,$val,$ttl) = $sth->fetchrow_array()) {
1602	# Silently skip v4/v6 mismatches. This is not an error, this is expected.
1603	if ($zone->{isv6}) {
1604	next if ($type == 65280 \|\| $type == 65283);
1605	} else {
1606	next if ($type == 65281 \|\| $type == 65284);
1607	}
1608
1609	$host =~ s/ADMINDOMAIN/$config{domain}/g;
1610
1611	# Check to make sure the IP stubs will fit in the zone. Under most usage failures here should be rare.
1612	# On failure, tack a note on to a warning string and continue without adding this record.
1613	# While we're at it, we substitute $zone for ZONE in the value.
1614	if ($val eq 'ZONE') {
1615	next if $revpatt; # If we've got a pattern, we skip the default record version.
1616	##fixme? do we care if we have multiple whole-zone templates?
1617	$val = $zone->network;
1618	} elsif ($val =~ /ZONE/) {
1619	my $tmpval = $val;
1620	$tmpval =~ s/ZONE//;
1621	# Bend the rules and allow single-trailing-number PTR or PTR template records to be inserted
1622	# as either v4 or v6. May make this an off-by-default config flag
1623	# Note that the origin records that may trigger this SHOULD already have ZONE,\d
1624	if ($type == 12 \|\| $type == 65282) {
1625	$tmpval =~ s/[,.]/::/ if ($tmpval =~ /^[,.]\d+$/ && $zone->{isv6});
1626	$tmpval =~ s/[,:]+/./ if ($tmpval =~ /^(?:,\|::)\d+$/ && !$zone->{isv6});
1627	}
1628	my $addr;
1629	if (_ipparent($dbh, 'n', 'y', \$tmpval, $rdns_id, \$addr)) {
1630	$val = $addr->addr;
1631	} else {
1632	$warnstr .= "\nDefault record '$val $typemap{$type} $host' doesn't fit in $zone, skipping";
1633	next;
1634	}
1635	}
1636
1637	# Substitute $zone for ZONE in the hostname.
1638	$host = _ZONE($zone, $host);
1639
1640	# Fill in the forward domain ID if we can find it, otherwise:
1641	# Coerce type down to PTR or PTR template if we can't
1642	my $domid = 0;
1643	if ($type >= 65280) {
1644	if (!($domid = _hostparent($dbh, $host))) {
1645	$warnstr .= "\nRecord added as PTR instead of $typemap{$type}; domain not found for $host";
1646	$type = $reverse_typemap{PTR};
1647	$domid = 0; # just to be explicit.
1648	}
1649	}
1650
1651	$sth_in->execute($domid,$host,$type,$val,$ttl);
1652
1653	if ($typemap{$type} eq 'SOA') {
1654	my @tmp1 = split /:/, $host;
1655	my @tmp2 = split /:/, $val;
1656	_log($dbh, (rdns_id => $rdns_id, group_id => $group,
1657	entry => "[new $zone] Added SOA record [contact $tmp1[0]] [master $tmp1[1]] ".
1658	"[refresh $tmp2[0]] [retry $tmp2[1]] [expire $tmp2[2]] [minttl $tmp2[3]], TTL $ttl"));
1659	$defttl = $tmp2[3];
1660	} else {
1661	my $logentry = "[new $zone] Added record '$host $typemap{$type}";
1662	_log($dbh, (rdns_id => $rdns_id, domain_id => $domid, group_id => $group,
1663	entry => $logentry." $val', TTL $ttl"));
1664	}
1665	}
1666
1667	# Generate record based on provided pattern.
1668	if ($revpatt) {
1669	my $host;
1670	my $type = ($zone->{isv6} ? 65284 : 65283);
1671	my $val = $zone->network;
1672
1673	# Substitute $zone for ZONE in the hostname.
1674	$host = _ZONE($zone, $revpatt);
1675
1676	my $domid = 0;
1677	if (!($domid = _hostparent($dbh, $host))) {
1678	$warnstr .= "\nDefault pattern added as PTR template instead of $typemap{$type}; domain not found for $host";
1679	$type = 65282;
1680	$domid = 0; # just to be explicit.
1681	}
1682
1683	$sth_in->execute($domid,$host,$type,$val,$defttl);
1684	my $logentry = "[new $zone] Added record '$host $typemap{$type}";
1685	_log($dbh, (rdns_id => $rdns_id, domain_id => $domid, group_id => $group,
1686	entry => $logentry." $val', TTL $defttl from pattern"));
1687	}
1688
1689	# If there are warnings (presumably about default records skipped for cause) log them
1690	_log($dbh, (rdns_id => $rdns_id, group_id => $group, entry => "Warning(s) adding $zone:$warnstr"))
1691	if $warnstr;
1692
1693	# once we get here, we should have suceeded.
1694	$dbh->commit;
1695	}; # end eval
1696
1697	if ($@) {
1698	my $msg = $@;
1699	eval { $dbh->rollback; };
1700	_log($dbh, (group_id => $group, entry => "Failed adding reverse zone $zone ($msg)"))
1701	if $config{log_failures};
1702	$dbh->commit; # since we enabled transactions earlier
1703	return ('FAIL',$msg);
1704	} else {
1705	my $retcode = 'OK';
1706	if ($warnstr) {
1707	$resultstr = $warnstr;
1708	$retcode = 'WARN';
1709	}
1710	return ($retcode, $rdns_id);
1711	}
1712
1713	} # end addRDNS()
1714
1715
1716	## DNSDB::getZoneCount
1717	# Get count of zones in group or groups
1718	# Takes a database handle and hash containing:
1719	# - the "current" group
1720	# - an array of "acceptable" groups
1721	# - a flag for forward/reverse zones
1722	# - Optionally accept a "starts with" and/or "contains" filter argument
1723	# Returns an integer count of the resulting zone list.
1724	sub getZoneCount {
1725	my $dbh = shift;
1726
1727	my %args = @_;
1728
1729	my @filterargs;
1730	$args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]\|0-9)$/;
1731	push @filterargs, "^$args{startwith}" if $args{startwith};
1732	$args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
1733	push @filterargs, $args{filter} if $args{filter};
1734
1735	my $sql;
1736	# Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
1737	if ($args{revrec} eq 'n') {
1738	$sql = "SELECT count(*) FROM domains".
1739	" WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
1740	($args{startwith} ? " AND domain ~* ?" : '').
1741	($args{filter} ? " AND domain ~* ?" : '');
1742	} else {
1743	$sql = "SELECT count(*) FROM revzones".
1744	" WHERE group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
1745	($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '').
1746	($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
1747	}
1748	my ($count) = $dbh->selectrow_array($sql, undef, @filterargs);
1749	return $count;
1750	} # end getZoneCount()
1751
1752
1753	## DNSDB::getZoneList()
1754	# Get a list of zones in the specified group(s)
1755	# Takes the same arguments as getZoneCount() above
1756	# Returns a reference to an array of hashrefs suitable for feeding to HTML::Template
1757	sub getZoneList {
1758	my $dbh = shift;
1759
1760	my %args = @_;
1761
1762	my @zonelist;
1763
1764	$args{sortorder} = 'ASC' if !grep $args{sortorder}, ('ASC','DESC');
1765	$args{offset} = 0 if !$args{offset} \|\| $args{offset} !~ /^(?:all\|\d+)$/;
1766
1767	my @filterargs;
1768	$args{startwith} = undef if $args{startwith} && $args{startwith} !~ /^(?:[a-z]\|0-9)$/;
1769	push @filterargs, "^$args{startwith}" if $args{startwith};
1770	$args{filter} =~ s/\./\[\.\]/g if $args{filter}; # only match literal dots, usually in reverse zones
1771	push @filterargs, $args{filter} if $args{filter};
1772
1773	my $sql;
1774	# Not as compact, and fix-me-twice if the common bits get wrong, but much easier to read
1775	if ($args{revrec} eq 'n') {
1776	$args{sortby} = 'domain' if !grep $args{sortby}, ('revnet','group','status');
1777	$sql = "SELECT domain_id,domain,status,groups.group_name AS group FROM domains".
1778	" INNER JOIN groups ON domains.group_id=groups.group_id".
1779	" WHERE domains.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
1780	($args{startwith} ? " AND domain ~* ?" : '').
1781	($args{filter} ? " AND domain ~* ?" : '');
1782	} else {
1783	##fixme: arguably startwith here is irrelevant. depends on the UI though.
1784	$args{sortby} = 'revnet' if !grep $args{sortby}, ('domain','group','status');
1785	$sql = "SELECT rdns_id,revnet,status,groups.group_name AS group FROM revzones".
1786	" INNER JOIN groups ON revzones.group_id=groups.group_id".
1787	" WHERE revzones.group_id IN ($args{curgroup}".($args{childlist} ? ",$args{childlist}" : '').")".
1788	($args{startwith} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '').
1789	($args{filter} ? " AND CAST(revnet AS VARCHAR) ~* ?" : '');
1790	}
1791	# A common tail.
1792	$sql .= " ORDER BY ".($args{sortby} eq 'group' ? 'groups.group_name' : $args{sortby})." $args{sortorder} ".
1793	($args{offset} eq 'all' ? '' : " LIMIT $config{perpage}".
1794	" OFFSET ".$args{offset}*$config{perpage});
1795	my $sth = $dbh->prepare($sql);
1796	$sth->execute(@filterargs);
1797	my $rownum = 0;
1798
1799	while (my @data = $sth->fetchrow_array) {
1800	my %row;
1801	$row{domainid} = $data[0];
1802	$row{domain} = $data[1];
1803	$row{status} = $data[2];
1804	$row{group} = $data[3];
1805	push @zonelist, \%row;
1806	}
1807
1808	return \@zonelist;
1809	} # end getZoneList()
1810
1811
1812	## DNSDB::addGroup()
1813	# Add a group
1814	# Takes a database handle, group name, parent group, hashref for permissions,
1815	# and optional template-vs-cloneme flag for the default records
1816	# Returns a status code and message
1817	sub addGroup {
1818	$errstr = '';
1819	my $dbh = shift;
1820	my $groupname = shift;
1821	my $pargroup = shift;
1822	my $permissions = shift;
1823
1824	# 0 indicates "custom", hardcoded.
1825	# Any other value clones that group's default records, if it exists.
1826	my $inherit = shift \|\| 0;
1827	##fixme: need a flag to indicate clone records or <?> ?
1828
1829	# Allow transactions, and raise an exception on errors so we can catch it later.
1830	# Use local to make sure these get "reset" properly on exiting this block
1831	local $dbh->{AutoCommit} = 0;
1832	local $dbh->{RaiseError} = 1;
1833
1834	my ($group_id) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group_name=?", undef, ($groupname));
1835
1836	return ('FAIL', "Group already exists") if $group_id;
1837
1838	# Wrap all the SQL in a transaction
1839	eval {
1840	$dbh->do("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)", undef, ($pargroup, $groupname) );
1841
1842	my ($groupid) = $dbh->selectrow_array("SELECT currval('groups_group_id_seq')");
1843
1844	# We work through the whole set of permissions instead of specifying them so
1845	# that when we add a new permission, we don't have to change the code anywhere
1846	# that doesn't explicitly deal with that specific permission.
1847	my @permvals;
1848	foreach (@permtypes) {
1849	if (!defined ($permissions->{$_})) {
1850	push @permvals, 0;
1851	} else {
1852	push @permvals, $permissions->{$_};
1853	}
1854	}
1855	$dbh->do("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")",
1856	undef, ($groupid, @permvals) );
1857	my ($permid) = $dbh->selectrow_array("SELECT currval('permissions_permission_id_seq')");
1858	$dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
1859
1860	# Default records
1861	my $sthf = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
1862	"VALUES ($groupid,?,?,?,?,?,?,?)");
1863	my $sthr = $dbh->prepare("INSERT INTO default_rev_records (group_id,host,type,val,ttl) ".
1864	"VALUES ($groupid,?,?,?,?)");
1865	if ($inherit) {
1866	# Duplicate records from parent. Actually relying on inherited records feels
1867	# very fragile, and it would be problematic to roll over at a later time.
1868	my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
1869	$sth2->execute($pargroup);
1870	while (my @clonedata = $sth2->fetchrow_array) {
1871	$sthf->execute(@clonedata);
1872	}
1873	# And now the reverse records
1874	$sth2 = $dbh->prepare("SELECT host,type,val,ttl FROM default_rev_records WHERE group_id=?");
1875	$sth2->execute($pargroup);
1876	while (my @clonedata = $sth2->fetchrow_array) {
1877	$sthr->execute(@clonedata);
1878	}
1879	} else {
1880	##fixme: Hardcoding is Bad, mmmmkaaaay?
1881	# reasonable basic defaults for SOA, MX, NS, and minimal hosting
1882	# could load from a config file, but somewhere along the line we need hardcoded bits.
1883	$sthf->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
1884	$sthf->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
1885	$sthf->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
1886	$sthf->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
1887	$sthf->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
1888	$sthf->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
1889	# reasonable basic defaults for generic reverse zone. Same as initial SQL tabledef.
1890	$sthr->execute('hostmaster.ADMINDOMAIN:ns1.ADMINDOMAIN', 6, '10800:3600:604800:10800', 86400);
1891	$sthr->execute('unused-%r.ADMINDOMAIN', 65283, 'ZONE', 3600);
1892	}
1893
1894	_log($dbh, (group_id => $pargroup, entry => "Added group $groupname") );
1895
1896	# once we get here, we should have suceeded.
1897	$dbh->commit;
1898	}; # end eval
1899
1900	if ($@) {
1901	my $msg = $@;
1902	eval { $dbh->rollback; };
1903	if ($config{log_failures}) {
1904	_log($dbh, (group_id => $pargroup, entry => "Failed to add group $groupname: $msg") );
1905	$dbh->commit;
1906	}
1907	return ('FAIL',$msg);
1908	}
1909
1910	return ('OK','OK');
1911	} # end addGroup()
1912
1913
1914	## DNSDB::delGroup()
1915	# Delete a group.
1916	# Takes a group ID
1917	# Returns a status code and message
1918	sub delGroup {
1919	my $dbh = shift;
1920	my $groupid = shift;
1921
1922	# Allow transactions, and raise an exception on errors so we can catch it later.
1923	# Use local to make sure these get "reset" properly on exiting this block
1924	local $dbh->{AutoCommit} = 0;
1925	local $dbh->{RaiseError} = 1;
1926
1927	##fixme: locate "knowable" error conditions and deal with them before the eval
1928	# ... or inside, whatever.
1929	# -> domains still exist in group
1930	# -> ...
1931	my $failmsg = '';
1932	my $resultmsg = '';
1933
1934	# collect some pieces for logging and error messages
1935	my $groupname = groupName($dbh,$groupid);
1936	my $parid = parentID($dbh, (id => $groupid, type => 'group'));
1937
1938	# Wrap all the SQL in a transaction
1939	eval {
1940	# Check for Things in the group
1941	$failmsg = "Can't remove group $groupname";
1942	my ($grpcnt) = $dbh->selectrow_array("SELECT count(*) FROM groups WHERE parent_group_id=?", undef, ($groupid));
1943	die "$grpcnt groups still in group\n" if $grpcnt;
1944	my ($domcnt) = $dbh->selectrow_array("SELECT count(*) FROM domains WHERE group_id=?", undef, ($groupid));
1945	die "$domcnt domains still in group\n" if $domcnt;
1946	my ($usercnt) = $dbh->selectrow_array("SELECT count(*) FROM users WHERE group_id=?", undef, ($groupid));
1947	die "$usercnt users still in group\n" if $usercnt;
1948
1949	$failmsg = "Failed to delete default records for $groupname";
1950	$dbh->do("DELETE from default_records WHERE group_id=?", undef, ($groupid));
1951	$failmsg = "Failed to delete default reverse records for $groupname";
1952	$dbh->do("DELETE from default_rev_records WHERE group_id=?", undef, ($groupid));
1953	$failmsg = "Failed to remove group $groupname";
1954	$dbh->do("DELETE from groups WHERE group_id=?", undef, ($groupid));
1955
1956	_log($dbh, (group_id => $parid, entry => "Deleted group $groupname"));
1957	$resultmsg = "Deleted group $groupname";
1958
1959	# once we get here, we should have suceeded.
1960	$dbh->commit;
1961	}; # end eval
1962
1963	if ($@) {
1964	my $msg = $@;
1965	eval { $dbh->rollback; };
1966	if ($config{log_failures}) {
1967	_log($dbh, (group_id => $parid, entry => "$failmsg: $msg"));
1968	$dbh->commit; # since we enabled transactions earlier
1969	}
1970	return ('FAIL',"$failmsg: $msg");
1971	}
1972
1973	return ('OK',$resultmsg);
1974	} # end delGroup()
1975
1976
1977	## DNSDB::getChildren()
1978	# Get a list of all groups whose parent^n is group <n>
1979	# Takes a database handle, group ID, reference to an array to put the group IDs in,
1980	# and an optional flag to return only immediate children or all children-of-children
1981	# default to returning all children
1982	# Calls itself
1983	sub getChildren {
1984	$errstr = '';
1985	my $dbh = shift;
1986	my $rootgroup = shift;
1987	my $groupdest = shift;
1988	my $immed = shift \|\| 'all';
1989
1990	# special break for default group; otherwise we get stuck.
1991	if ($rootgroup == 1) {
1992	# by definition, group 1 is the Root Of All Groups
1993	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
1994	($immed ne 'all' ? " AND parent_group_id=1" : ''));
1995	$sth->execute;
1996	while (my @this = $sth->fetchrow_array) {
1997	push @$groupdest, @this;
1998	}
1999	} else {
2000	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=?");
2001	$sth->execute($rootgroup);
2002	return if $sth->rows == 0;
2003	my @grouplist;
2004	while (my ($group) = $sth->fetchrow_array) {
2005	push @$groupdest, $group;
2006	getChildren($dbh,$group,$groupdest) if $immed eq 'all';
2007	}
2008	}
2009	} # end getChildren()
2010
2011
2012	## DNSDB::groupName()
2013	# Return the group name based on a group ID
2014	# Takes a database handle and the group ID
2015	# Returns the group name or undef on failure
2016	sub groupName {
2017	$errstr = '';
2018	my $dbh = shift;
2019	my $groupid = shift;
2020	my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
2021	$sth->execute($groupid);
2022	my ($groupname) = $sth->fetchrow_array();
2023	$errstr = $DBI::errstr if !$groupname;
2024	return $groupname if $groupname;
2025	} # end groupName
2026
2027
2028	## DNSDB::groupID()
2029	# Return the group ID based on the group name
2030	# Takes a database handle and the group name
2031	# Returns the group ID or undef on failure
2032	sub groupID {
2033	$errstr = '';
2034	my $dbh = shift;
2035	my $group = shift;
2036	my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group=?", undef, ($group) );
2037	$errstr = $DBI::errstr if !$grpid;
2038	return $grpid if $grpid;
2039	} # end groupID()
2040
2041
2042	## DNSDB::addUser()
2043	# Add a user.
2044	# Takes a DB handle, username, group ID, password, state (active/inactive).
2045	# Optionally accepts:
2046	# user type (user/admin) - defaults to user
2047	# permissions string - defaults to inherit from group
2048	# three valid forms:
2049	# i - Inherit permissions
2050	# c:<user_id> - Clone permissions from <user_id>
2051	# C:<permission list> - Set these specific permissions
2052	# first name - defaults to username
2053	# last name - defaults to blank
2054	# phone - defaults to blank (could put other data within column def)
2055	# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
2056	sub addUser {
2057	$errstr = '';
2058	my $dbh = shift;
2059	my $username = shift;
2060	my $group = shift;
2061	my $pass = shift;
2062	my $state = shift;
2063
2064	return ('FAIL', "Missing one or more required entries") if !defined($state);
2065	return ('FAIL', "Username must not be blank") if !$username;
2066
2067	my $type = shift \|\| 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
2068
2069	my $permstring = shift \|\| 'i'; # default is to inhert permissions from group
2070
2071	my $fname = shift \|\| $username;
2072	my $lname = shift \|\| '';
2073	my $phone = shift \|\| ''; # not going format-check
2074
2075	my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
2076	my $user_id;
2077
2078	# quick check to start to see if we've already got one
2079	$sth->execute($username);
2080	($user_id) = $sth->fetchrow_array;
2081
2082	return ('FAIL', "User already exists") if $user_id;
2083
2084	# Allow transactions, and raise an exception on errors so we can catch it later.
2085	# Use local to make sure these get "reset" properly on exiting this block
2086	local $dbh->{AutoCommit} = 0;
2087	local $dbh->{RaiseError} = 1;
2088
2089	# Wrap all the SQL in a transaction
2090	eval {
2091	# insert the user... note we set inherited perms by default since
2092	# it's simple and cleans up some other bits of state
2093	my $sth = $dbh->prepare("INSERT INTO users ".
2094	"(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
2095	"VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
2096	$sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
2097
2098	# get the ID...
2099	($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
2100
2101	# Permissions! Gotta set'em all!
2102	die "Invalid permission string $permstring"
2103	if $permstring !~ /^(?:
2104	i # inherit
2105	\|c:\d+ # clone
2106	# custom. no, the leading , is not a typo
2107	\|C:(?:,(?:group\|user\|domain\|record\|self)_(?:edit\|create\|delete))*
2108	)$/x;
2109	# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
2110	if ($permstring ne 'i') {
2111	# for cloned or custom permissions, we have to create a new permissions entry.
2112	my $clonesrc = $group;
2113	if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
2114	$dbh->do("INSERT INTO permissions ($permlist,user_id) ".
2115	"SELECT $permlist,? FROM permissions WHERE permission_id=".
2116	"(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
2117	undef, ($user_id,$clonesrc) );
2118	$dbh->do("UPDATE users SET permission_id=".
2119	"(SELECT permission_id FROM permissions WHERE user_id=?) ".
2120	"WHERE user_id=?", undef, ($user_id, $user_id) );
2121	}
2122	if ($permstring =~ /^C:/) {
2123	# finally for custom permissions, we set the passed-in permissions (and unset
2124	# any that might have been brought in by the clone operation above)
2125	my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
2126	undef, ($user_id) );
2127	foreach (@permtypes) {
2128	if ($permstring =~ /,$_/) {
2129	$dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
2130	} else {
2131	$dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
2132	}
2133	}
2134	}
2135
2136	$dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
2137
2138	##fixme: add another table to hold name/email for log table?
2139
2140	_log($dbh, (group_id => $group, entry => "Added user $username ($fname $lname)"));
2141	# once we get here, we should have suceeded.
2142	$dbh->commit;
2143	}; # end eval
2144
2145	if ($@) {
2146	my $msg = $@;
2147	eval { $dbh->rollback; };
2148	if ($config{log_failures}) {
2149	_log($dbh, (group_id => $group, entry => "Error adding user $username: $msg"));
2150	$dbh->commit; # since we enabled transactions earlier
2151	}
2152	return ('FAIL',"Error adding user $username: $msg");
2153	}
2154
2155	return ('OK',"User $username ($fname $lname) added");
2156	} # end addUser
2157
2158
2159	## DNSDB::checkUser()
2160	# Check user/pass combo on login
2161	sub checkUser {
2162	my $dbh = shift;
2163	my $user = shift;
2164	my $inpass = shift;
2165
2166	my $sth = $dbh->prepare("SELECT user_id,group_id,password,firstname,lastname FROM users WHERE username=?");
2167	$sth->execute($user);
2168	my ($uid,$gid,$pass,$fname,$lname) = $sth->fetchrow_array;
2169	my $loginfailed = 1 if !defined($uid);
2170
2171	if ($pass =~ m\|^\$1\$([A-Za-z0-9/.]+)\$\|) {
2172	$loginfailed = 1 if $pass ne unix_md5_crypt($inpass,$1);
2173	} else {
2174	$loginfailed = 1 if $pass ne $inpass;
2175	}
2176
2177	# nnnngggg
2178	return ($uid, $gid);
2179	} # end checkUser
2180
2181
2182	## DNSDB:: updateUser()
2183	# Update general data about user
2184	sub updateUser {
2185	my $dbh = shift;
2186
2187	##fixme: tweak calling convention so that we can update any given bit of data
2188	my $uid = shift;
2189	my $username = shift;
2190	my $group = shift;
2191	my $pass = shift;
2192	my $state = shift;
2193	my $type = shift \|\| 'u';
2194	my $fname = shift \|\| $username;
2195	my $lname = shift \|\| '';
2196	my $phone = shift \|\| ''; # not going format-check
2197
2198	my $resultmsg = '';
2199
2200	# Allow transactions, and raise an exception on errors so we can catch it later.
2201	# Use local to make sure these get "reset" properly on exiting this block
2202	local $dbh->{AutoCommit} = 0;
2203	local $dbh->{RaiseError} = 1;
2204
2205	my $sth;
2206
2207	# Password can be left blank; if so we assume there's one on file.
2208	# Actual blank passwords are bad, mm'kay?
2209	if (!$pass) {
2210	($pass) = $dbh->selectrow_array("SELECT password FROM users WHERE user_id=?", undef, ($uid));
2211	} else {
2212	$pass = unix_md5_crypt($pass);
2213	}
2214
2215	eval {
2216	$dbh->do("UPDATE users SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?".
2217	" WHERE user_id=?", undef, ($username, $pass, $fname, $lname, $phone, $type, $state, $uid));
2218	$resultmsg = "Updated user info for $username ($fname $lname)";
2219	_log($dbh, group_id => $group, entry => $resultmsg);
2220	$dbh->commit;
2221	};
2222	if ($@) {
2223	my $msg = $@;
2224	eval { $dbh->rollback; };
2225	if ($config{log_failures}) {
2226	_log($dbh, (group_id => $group, entry => "Error updating user $username: $msg"));
2227	$dbh->commit; # since we enabled transactions earlier
2228	}
2229	return ('FAIL',"Error updating user $username: $msg");
2230	}
2231
2232	return ('OK',$resultmsg);
2233	} # end updateUser()
2234
2235
2236	## DNSDB::delUser()
2237	#
2238	sub delUser {
2239	my $dbh = shift;
2240	return ('FAIL',"Need database handle") if !$dbh;
2241	my $userid = shift;
2242	return ('FAIL',"Missing userid") if !defined($userid);
2243
2244	my $sth = $dbh->prepare("delete from users where user_id=?");
2245	$sth->execute($userid);
2246
2247	return ('FAIL',"Couldn't remove user: ".$sth->errstr) if $sth->err;
2248
2249	return ('OK','OK');
2250
2251	} # end delUser
2252
2253
2254	## DNSDB::userFullName()
2255	# Return a pretty string!
2256	# Takes a user_id and optional printf-ish string to indicate which pieces where:
2257	# %u for the username
2258	# %f for the first name
2259	# %l for the last name
2260	# All other text in the passed string will be left as-is.
2261	##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
2262	sub userFullName {
2263	$errstr = '';
2264	my $dbh = shift;
2265	my $userid = shift;
2266	my $fullformat = shift \|\| '%f %l (%u)';
2267	my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
2268	$sth->execute($userid);
2269	my ($uname,$fname,$lname) = $sth->fetchrow_array();
2270	$errstr = $DBI::errstr if !$uname;
2271
2272	$fullformat =~ s/\%u/$uname/g;
2273	$fullformat =~ s/\%f/$fname/g;
2274	$fullformat =~ s/\%l/$lname/g;
2275
2276	return $fullformat;
2277	} # end userFullName
2278
2279
2280	## DNSDB::userStatus()
2281	# Sets and/or returns a user's status
2282	# Takes a database handle, user ID and optionally a status argument
2283	# Returns undef on errors.
2284	sub userStatus {
2285	my $dbh = shift;
2286	my $id = shift;
2287	my $newstatus = shift;
2288
2289	return undef if $id !~ /^\d+$/;
2290
2291	my $sth;
2292
2293	# ooo, fun! let's see what we were passed for status
2294	if ($newstatus) {
2295	$sth = $dbh->prepare("update users set status=? where user_id=?");
2296	# ass-u-me caller knows what's going on in full
2297	if ($newstatus =~ /^[01]$/) { # only two valid for now.
2298	$sth->execute($newstatus,$id);
2299	} elsif ($newstatus =~ /^usero(?:n\|ff)$/) {
2300	$sth->execute(($newstatus eq 'useron' ? 1 : 0),$id);
2301	}
2302	}
2303
2304	$sth = $dbh->prepare("select status from users where user_id=?");
2305	$sth->execute($id);
2306	my ($status) = $sth->fetchrow_array;
2307	return $status;
2308	} # end userStatus()
2309
2310
2311	## DNSDB::getUserData()
2312	# Get misc user data for display
2313	sub getUserData {
2314	my $dbh = shift;
2315	my $uid = shift;
2316
2317	my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
2318	"FROM users WHERE user_id=?");
2319	$sth->execute($uid);
2320	return $sth->fetchrow_hashref();
2321
2322	} # end getUserData()
2323
2324
2325	## DNSDB::getSOA()
2326	# Return all suitable fields from an SOA record in separate elements of a hash
2327	# Takes a database handle, default/live flag, domain/reverse flag, and parent ID
2328	sub getSOA {
2329	$errstr = '';
2330	my $dbh = shift;
2331	my $def = shift;
2332	my $rev = shift;
2333	my $id = shift;
2334	my %ret;
2335
2336	# (ab)use distance and weight columns to store SOA data? can't for default_rev_records...
2337	# - should really attach serial to the zone parent somewhere
2338
2339	my $sql = "SELECT record_id,host,val,ttl from "._rectable($def,$rev).
2340	" WHERE "._recparent($def,$rev)." = ? AND type=$reverse_typemap{SOA}";
2341
2342	my $sth = $dbh->prepare($sql);
2343	$sth->execute($id);
2344	##fixme: stick a flag somewhere if the record doesn't exist. by the API, this is an impossible case, but...
2345
2346	my ($recid,$host,$val,$ttl) = $sth->fetchrow_array() or return;
2347	my ($contact,$prins) = split /:/, $host;
2348	my ($refresh,$retry,$expire,$minttl) = split /:/, $val;
2349
2350	$ret{recid} = $recid;
2351	$ret{ttl} = $ttl;
2352	# $ret{serial} = $serial; # ca't use distance for serial with default_rev_records
2353	$ret{prins} = $prins;
2354	$ret{contact} = $contact;
2355	$ret{refresh} = $refresh;
2356	$ret{retry} = $retry;
2357	$ret{expire} = $expire;
2358	$ret{minttl} = $minttl;
2359
2360	return %ret;
2361	} # end getSOA()
2362
2363
2364	## DNSDB::updateSOA()
2365	# Update the specified SOA record
2366	# Takes a database handle, default/live flag, forward/reverse flag, and SOA data hash
2367	# Returns a two-element list with a result code and message
2368	sub updateSOA {
2369	my $dbh = shift;
2370	my $defrec = shift;
2371	my $revrec = shift;
2372
2373	my %soa = @_;
2374
2375	my %oldsoa = getSOA($dbh, $defrec, $revrec, $soa{recid});
2376
2377	# Allow transactions, and raise an exception on errors so we can catch it later.
2378	# Use local to make sure these get "reset" properly on exiting this block
2379	local $dbh->{AutoCommit} = 0;
2380	local $dbh->{RaiseError} = 1;
2381
2382	my $msg;
2383
2384	eval {
2385	##fixme: data validation: make sure {recid} is really the SOA for {parent}
2386	my $sql = "UPDATE "._rectable($defrec, $revrec)." SET host=?, val=?, ttl=? WHERE record_id=? AND type=6";
2387	$dbh->do($sql, undef, ("$soa{contact}:$soa{prins}", "$soa{refresh}:$soa{retry}:$soa{expire}:$soa{minttl}",
2388	$soa{ttl}, $soa{recid}) );
2389
2390	$msg = "Updated ".($defrec eq 'y' ? 'default ' : '')."SOA for ".
2391	($defrec eq 'y' ? groupName($dbh, $soa{recid}) :
2392	($revrec eq 'n' ? domainName($dbh, $soa{recid}) : revName($dbh, $soa{recid}) ) ).
2393	": (ns $oldsoa{prins}, contact $oldsoa{contact}, refresh $oldsoa{refresh},".
2394	" retry $oldsoa{retry}, expire $oldsoa{expire}, minTTL $oldsoa{minttl}, TTL $oldsoa{ttl}) to ".
2395	"(ns $soa{prins}, contact $soa{contact}, refresh $soa{refresh},".
2396	" retry $soa{retry}, expire $soa{expire}, minTTL $soa{minttl}, TTL $soa{ttl})";
2397
2398	# _log($dbh, (rdns_id => $rdns_id, user_id => $userinfo{id}, group_id => $group,
2399	# username => $userinfo{name}, entry => $msg) );
2400
2401	$dbh->commit;
2402	};
2403	if ($@) {
2404	$msg = $@;
2405	eval { $dbh->rollback; };
2406	return ('FAIL',$msg);
2407	} else {
2408	return ('OK', $msg);
2409	}
2410	} # end updateSOA()
2411
2412
2413	## DNSDB::getRecLine()
2414	# Return all data fields for a zone record in separate elements of a hash
2415	# Takes a database handle, default/live flag, forward/reverse flag, and record ID
2416	sub getRecLine {
2417	$errstr = '';
2418	my $dbh = shift;
2419	my $defrec = shift;
2420	my $revrec = shift;
2421	my $id = shift;
2422
2423	my $sql = "SELECT record_id,host,type,val,ttl".($revrec eq 'n' ? ',distance,weight,port' : '').
2424	(($defrec eq 'y') ? ',group_id FROM ' : ',domain_id,rdns_id FROM ').
2425	_rectable($defrec,$revrec)." WHERE record_id=?";
2426	my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
2427
2428	if ($dbh->err) {
2429	$errstr = $DBI::errstr;
2430	return undef;
2431	}
2432
2433	if (!$ret) {
2434	$errstr = "No such record";
2435	return undef;
2436	}
2437
2438	# explicitly set a parent id
2439	if ($defrec eq 'y') {
2440	$ret->{parid} = $ret->{group_id};
2441	} else {
2442	$ret->{parid} = (($revrec eq 'n') ? $ret->{domain_id} : $ret->{rdns_id});
2443	# and a secondary if we have a custom type that lives in both a forward and reverse zone
2444	$ret->{secid} = (($revrec eq 'y') ? $ret->{domain_id} : $ret->{rdns_id}) if $ret->{type} > 65279;
2445	}
2446
2447	return $ret;
2448	}
2449
2450
2451	##fixme: should use above (getRecLine()) to get lines for below?
2452	## DNSDB::getDomRecs()
2453	# Return records for a domain
2454	# Takes a database handle, default/live flag, group/domain ID, start,
2455	# number of records, sort field, and sort order
2456	# Returns a reference to an array of hashes
2457	sub getDomRecs {
2458	$errstr = '';
2459	my $dbh = shift;
2460	my $def = shift;
2461	my $rev = shift;
2462	my $id = shift;
2463	my $nrecs = shift \|\| 'all';
2464	my $nstart = shift \|\| 0;
2465
2466	## for order, need to map input to column names
2467	my $order = shift \|\| 'host';
2468	my $direction = shift \|\| 'ASC';
2469
2470	my $filter = shift \|\| '';
2471
2472	my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.ttl";
2473	$sql .= ",r.distance,r.weight,r.port" if $rev eq 'n';
2474	$sql .= " FROM "._rectable($def,$rev)." r ";
2475	$sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
2476	$sql .= "WHERE "._recparent($def,$rev)." = ?";
2477	$sql .= " AND NOT r.type=$reverse_typemap{SOA}";
2478	$sql .= " AND host ~* ?" if $filter;
2479	# use alphaorder column for "correct" ordering of sort-by-type instead of DNS RR type number
2480	$sql .= " ORDER BY ".($order eq 'type' ? 't.alphaorder' : "r.$order")." $direction";
2481
2482	my @bindvars = ($id);
2483	push @bindvars, $filter if $filter;
2484
2485	# just to be ultraparanoid about SQL injection vectors
2486	if ($nstart ne 'all') {
2487	$sql .= " LIMIT ? OFFSET ?";
2488	push @bindvars, $nrecs;
2489	push @bindvars, ($nstart*$nrecs);
2490	}
2491	my $sth = $dbh->prepare($sql) or warn $dbh->errstr;
2492	$sth->execute(@bindvars) or warn "$sql: ".$sth->errstr;
2493
2494	my @retbase;
2495	while (my $ref = $sth->fetchrow_hashref()) {
2496	push @retbase, $ref;
2497	}
2498
2499	my $ret = \@retbase;
2500	return $ret;
2501	} # end getDomRecs()
2502
2503
2504	## DNSDB::getRecCount()
2505	# Return count of non-SOA records in zone (or default records in a group)
2506	# Takes a database handle, default/live flag, reverse/forward flag, group/domain ID,
2507	# and optional filtering modifier
2508	# Returns the count
2509	sub getRecCount {
2510	my $dbh = shift;
2511	my $defrec = shift;
2512	my $revrec = shift;
2513	my $id = shift;
2514	my $filter = shift \|\| '';
2515
2516	# keep the nasties down, since we can't ?-sub this bit. :/
2517	# note this is chars allowed in DNS hostnames
2518	$filter =~ s/[^a-zA-Z0-9_.:-]//g;
2519
2520	my @bindvars = ($id);
2521	push @bindvars, $filter if $filter;
2522	my $sql = "SELECT count(*) FROM ".
2523	_rectable($defrec,$revrec).
2524	" WHERE "._recparent($defrec,$revrec)."=? ".
2525	"AND NOT type=$reverse_typemap{SOA}".
2526	($filter ? " AND host ~* ?" : '');
2527	my ($count) = $dbh->selectrow_array($sql, undef, (@bindvars) );
2528
2529	return $count;
2530
2531	} # end getRecCount()
2532
2533
2534	## DNSDB::addRec()
2535	# Add a new record to a domain or a group's default records
2536	# Takes a database handle, default/live flag, group/domain ID,
2537	# host, type, value, and TTL
2538	# Some types require additional detail: "distance" for MX and SRV,
2539	# and weight/port for SRV
2540	# Returns a status code and detail message in case of error
2541	##fixme: pass a hash with the record data, not a series of separate values
2542	sub addRec {
2543	$errstr = '';
2544	my $dbh = shift;
2545	my $defrec = shift;
2546	my $revrec = shift;
2547	my $id = shift; # parent (group_id for defrecs, rdns_id for reverse records,
2548	# domain_id for domain records)
2549
2550	my $host = shift;
2551	my $rectype = shift; # reference so we can coerce it if "+"-types can't find both zones
2552	my $val = shift;
2553	my $ttl = shift;
2554
2555	# prep for validation
2556	my $addr = NetAddr::IP->new($$val);
2557	$$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
2558
2559	my $domid = 0;
2560	my $revid = 0;
2561
2562	my $retcode = 'OK'; # assume everything will go OK
2563	my $retmsg = '';
2564
2565	# do simple validation first
2566	return ('FAIL', "TTL must be numeric") unless $ttl =~ /^\d+$/;
2567
2568	# Quick check on hostname parts. Note the regex is more forgiving than the error message;
2569	# domain names technically are case-insensitive, and we use printf-like % codes for a couple
2570	# of types. Other things may also be added to validate default records of several flavours.
2571	return ('FAIL', "Hostnames may not contain anything other than (0-9 a-z . _)")
2572	if $defrec eq 'n' && $$host !~ /^[0-9a-z_%.-]+$/i;
2573
2574	# Collect these even if we're only doing a simple A record so we can call any validation sub
2575	my $dist = shift;
2576	my $weight = shift;
2577	my $port = shift;
2578
2579	my $fields;
2580	my @vallist;
2581
2582	# Call the validation sub for the type requested.
2583	($retcode,$retmsg) = $validators{$$rectype}($dbh, (defrec => $defrec, revrec => $revrec, id => $id,
2584	host => $host, rectype => $rectype, val => $val, addr => $addr,
2585	dist => \$dist, port => \$port, weight => \$weight,
2586	fields => \$fields, vallist => \@vallist) );
2587
2588	return ($retcode,$retmsg) if $retcode eq 'FAIL';
2589
2590	# Set up database fields and bind parameters
2591	$fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
2592	push @vallist, ($$host,$$rectype,$$val,$ttl,$id);
2593	my $vallen = '?'.(',?'x$#vallist);
2594
2595	# Put together the success log entry. We have to use this horrible kludge
2596	# because domain_id and rdns_id may or may not be present, and if they are,
2597	# they're not at a guaranteed consistent index in the array. wheee!
2598	my %logdata;
2599	my @ftmp = split /,/, $fields;
2600	for (my $i=0; $i <= $#vallist; $i++) {
2601	$logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
2602	$logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
2603	}
2604	$logdata{group_id} = $id if $defrec eq 'y';
2605	$logdata{group_id} = parentID($dbh,
2606	(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) )
2607	if $defrec eq 'n';
2608	$logdata{entry} = "Added ".($defrec eq 'y' ? 'default record' : 'record')." '$$host $typemap{$$rectype} $$val";
2609	$logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
2610	$logdata{entry} .= " [priority $dist] [weight $weight] [port $port]"
2611	if $typemap{$$rectype} eq 'SRV';
2612	$logdata{entry} .= "', TTL $ttl";
2613
2614	# Allow transactions, and raise an exception on errors so we can catch it later.
2615	# Use local to make sure these get "reset" properly on exiting this block
2616	local $dbh->{AutoCommit} = 0;
2617	local $dbh->{RaiseError} = 1;
2618
2619	eval {
2620	$dbh->do("INSERT INTO "._rectable($defrec, $revrec)." ($fields) VALUES ($vallen)",
2621	undef, @vallist);
2622	_log($dbh, %logdata);
2623	$dbh->commit;
2624	};
2625	if ($@) {
2626	my $msg = $@;
2627	eval { $dbh->rollback; };
2628	if ($config{log_failures}) {
2629	$logdata{entry} = "Failed adding ".($defrec eq 'y' ? 'default ' : '').
2630	"record '$$host $typemap{$$rectype} $$val', TTL $ttl ($msg)";
2631	_log($dbh, %logdata);
2632	$dbh->commit;
2633	}
2634	return ('FAIL',$msg);
2635	}
2636
2637	$resultstr = $logdata{entry};
2638	return ($retcode, $retmsg);
2639
2640	} # end addRec()
2641
2642
2643	## DNSDB::updateRec()
2644	# Update a record
2645	# Takes a database handle, default and reverse flags, record ID, immediate parent ID, and new record data.
2646	# Returns a status code and message
2647	sub updateRec {
2648	$errstr = '';
2649
2650	my $dbh = shift;
2651	my $defrec = shift;
2652	my $revrec = shift;
2653	my $id = shift;
2654	my $parid = shift; # immediate parent entity that we're descending from to update the record
2655
2656	# all records have these
2657	my $host = shift;
2658	my $hostbk = $$host; # Keep a backup copy of the original, so we can WARN if the update mangles the domain
2659	my $rectype = shift;
2660	my $val = shift;
2661	my $ttl = shift;
2662
2663	# prep for validation
2664	my $addr = NetAddr::IP->new($$val);
2665	$$host =~ s/\.+$//; # FQDNs ending in . are an internal detail, and really shouldn't be exposed in the UI.
2666
2667	my $domid = 0;
2668	my $revid = 0;
2669
2670	my $retcode = 'OK'; # assume everything will go OK
2671	my $retmsg = '';
2672
2673	# do simple validation first
2674	return ('FAIL', "TTL must be numeric") unless $ttl =~ /^\d+$/;
2675
2676	# Quick check on hostname parts. Note the regex is more forgiving than the error message;
2677	# domain names technically are case-insensitive, and we use printf-like % codes for a couple
2678	# of types. Other things may also be added to validate default records of several flavours.
2679	return ('FAIL', "Hostnames may not contain anything other than (0-9 a-z - . _)")
2680	if $defrec eq 'n' && $$host !~ /^[0-9a-z_%.-]+$/i;
2681
2682	# only MX and SRV will use these
2683	my $dist = shift \|\| 0;
2684	my $weight = shift \|\| 0;
2685	my $port = shift \|\| 0;
2686
2687	my $fields;
2688	my @vallist;
2689
2690	# get old record data so we have the right parent ID
2691	# and for logging (eventually)
2692	my $oldrec = getRecLine($dbh, $defrec, $revrec, $id);
2693
2694	# Call the validation sub for the type requested.
2695	# Note the ID to pass here is the parent, not the record
2696	($retcode,$retmsg) = $validators{$$rectype}($dbh, (defrec => $defrec, revrec => $revrec,
2697	id => ($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})),
2698	host => $host, rectype => $rectype, val => $val, addr => $addr,
2699	dist => \$dist, port => \$port, weight => \$weight,
2700	fields => \$fields, vallist => \@vallist,
2701	update => $id) );
2702
2703	return ($retcode,$retmsg) if $retcode eq 'FAIL';
2704
2705	# Set up database fields and bind parameters. Note only the optional fields
2706	# (distance, weight, port, secondary parent ID) are added in the validation call above
2707	$fields .= "host,type,val,ttl,"._recparent($defrec,$revrec);
2708	push @vallist, ($$host,$$rectype,$$val,$ttl,
2709	($defrec eq 'y' ? $oldrec->{group_id} : ($revrec eq 'n' ? $oldrec->{domain_id} : $oldrec->{rdns_id})) );
2710
2711	# hack hack PTHUI
2712	# need to forcibly make sure we disassociate a record with a parent it's no longer related to.
2713	# eg, PTR records may not have a domain parent, or A/AAAA records may not have a revzone parent.
2714	# mainly needed for crossover types that got coerced down to "standard" types
2715	if ($defrec eq 'n') {
2716	if ($$rectype == $reverse_typemap{PTR}) {
2717	$fields .= ",domain_id";
2718	push @vallist, 0;
2719	}
2720	if ($$rectype == $reverse_typemap{A} \|\| $$rectype == $reverse_typemap{AAAA}) {
2721	$fields .= ",rdns_id";
2722	push @vallist, 0;
2723	}
2724	}
2725
2726	# Fiddle the field list into something suitable for updates
2727	$fields =~ s/,/=?,/g;
2728	$fields .= "=?";
2729
2730	# Put together the success log entry. Horrible kludge from addRec() copied as-is since
2731	# we don't know whether the passed arguments or retrieved values for domain_id and rdns_id
2732	# will be maintained (due to "not-in-zone" validation changes)
2733	my %logdata;
2734	my @ftmp = split /,/, $fields;
2735	for (my $i=0; $i <= $#vallist; $i++) {
2736	$logdata{domain_id} = $vallist[$i] if $ftmp[$i] eq 'domain_id';
2737	$logdata{rdns_id} = $vallist[$i] if $ftmp[$i] eq 'rdns_id';
2738	}
2739	$logdata{group_id} = $parid if $defrec eq 'y';
2740	$logdata{group_id} = parentID($dbh,
2741	(id => $parid, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) )
2742	if $defrec eq 'n';
2743	$logdata{entry} = "Updated ".($defrec eq 'y' ? 'default record' : 'record')." from\n".
2744	"'$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
2745	$logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
2746	$logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
2747	if $typemap{$oldrec->{type}} eq 'SRV';
2748	$logdata{entry} .= "', TTL $oldrec->{ttl}\nto\n'$$host $typemap{$$rectype} $$val";
2749	$logdata{entry} .= " [distance $dist]" if $typemap{$$rectype} eq 'MX';
2750	$logdata{entry} .= " [priority $dist] [weight $weight] [port $port]" if $typemap{$$rectype} eq 'SRV';
2751	$logdata{entry} .= "', TTL $ttl";
2752
2753	local $dbh->{AutoCommit} = 0;
2754	local $dbh->{RaiseError} = 1;
2755
2756	eval {
2757	$dbh->do("UPDATE "._rectable($defrec,$revrec)." SET $fields WHERE record_id=?", undef, (@vallist, $id) );
2758	_log($dbh, %logdata);
2759	$dbh->commit;
2760	};
2761	if ($@) {
2762	my $msg = $@;
2763	eval { $dbh->rollback; };
2764	if ($config{log_failures}) {
2765	$logdata{entry} = "Failed updating ".($defrec eq 'y' ? 'default ' : '').
2766	"record '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
2767	_log($dbh, %logdata);
2768	$dbh->commit;
2769	}
2770	return ('FAIL', $msg);
2771	}
2772
2773	$resultstr = $logdata{entry};
2774	return ($retcode, $retmsg);
2775	} # end updateRec()
2776
2777
2778	## DNSDB::delRec()
2779	# Delete a record.
2780	sub delRec {
2781	$errstr = '';
2782	my $dbh = shift;
2783	my $defrec = shift;
2784	my $revrec = shift;
2785	my $id = shift;
2786
2787	my $oldrec = getRecLine($dbh, $defrec, $revrec, $id);
2788
2789	# Allow transactions, and raise an exception on errors so we can catch it later.
2790	# Use local to make sure these get "reset" properly on exiting this block
2791	local $dbh->{AutoCommit} = 0;
2792	local $dbh->{RaiseError} = 1;
2793
2794	# Put together the log entry
2795	my %logdata;
2796	$logdata{domain_id} = $oldrec->{domain_id};
2797	$logdata{rdns_id} = $oldrec->{rdns_id};
2798	$logdata{group_id} = $oldrec->{group_id} if $defrec eq 'y';
2799	$logdata{group_id} = parentID($dbh,
2800	(id => $oldrec->{domain_id}, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) )
2801	if $defrec eq 'n';
2802	$logdata{entry} = "Deleted ".($defrec eq 'y' ? 'default record ' : 'record ').
2803	"'$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}";
2804	$logdata{entry} .= " [distance $oldrec->{distance}]" if $typemap{$oldrec->{type}} eq 'MX';
2805	$logdata{entry} .= " [priority $oldrec->{distance}] [weight $oldrec->{weight}] [port $oldrec->{port}]"
2806	if $typemap{$oldrec->{type}} eq 'SRV';
2807	$logdata{entry} .= "', TTL $oldrec->{ttl}\n";
2808
2809	eval {
2810	my $sth = $dbh->do("DELETE FROM "._rectable($defrec,$revrec)." WHERE record_id=?", undef, ($id));
2811	_log($dbh, %logdata);
2812	$dbh->commit;
2813	};
2814	if ($@) {
2815	my $msg = $@;
2816	eval { $dbh->rollback; };
2817	if ($config{log_failures}) {
2818	$logdata{entry} = "Error deleting ".($defrec eq 'y' ? 'default record' : 'record').
2819	" '$oldrec->{host} $typemap{$oldrec->{type}} $oldrec->{val}', TTL $oldrec->{ttl} ($msg)";
2820	_log($dbh, %logdata);
2821	$dbh->commit;
2822	}
2823	return ('FAIL', $msg);
2824	}
2825
2826	return ('OK',$logdata{entry});
2827	} # end delRec()
2828
2829
2830	## DNSDB::getTypelist()
2831	# Get a list of record types for various UI dropdowns
2832	# Takes database handle, forward/reverse/lookup flag, and optional "tag as selected" indicator (defaults to A)
2833	# Returns an arrayref to list of hashrefs perfect for HTML::Template
2834	sub getTypelist {
2835	my $dbh = shift;
2836	my $recgroup = shift;
2837	my $type = shift \|\| $reverse_typemap{A};
2838
2839	# also accepting $webvar{revrec}!
2840	$recgroup = 'f' if $recgroup eq 'n';
2841	$recgroup = 'r' if $recgroup eq 'y';
2842
2843	my $sql = "SELECT val,name FROM rectypes WHERE ";
2844	if ($recgroup eq 'r') {
2845	# reverse zone types
2846	$sql .= "stdflag=2 OR stdflag=3";
2847	} elsif ($recgroup eq 'l') {
2848	# DNS lookup types. Note we avoid our custom types >= 65280, since those are entirely internal.
2849	$sql .= "(stdflag=1 OR stdflag=2 OR stdflag=3) AND val < 65280";
2850	} else {
2851	# default; forward zone types. technically $type eq 'f' but not worth the error message.
2852	$sql .= "stdflag=1 OR stdflag=2";
2853	}
2854	$sql .= " ORDER BY listorder";
2855
2856	my $sth = $dbh->prepare($sql);
2857	$sth->execute;
2858	my @typelist;
2859	while (my ($rval,$rname) = $sth->fetchrow_array()) {
2860	my %row = ( recval => $rval, recname => $rname );
2861	$row{tselect} = 1 if $rval == $type;
2862	push @typelist, \%row;
2863	}
2864
2865	# Add SOA on lookups since it's not listed in other dropdowns.
2866	if ($recgroup eq 'l') {
2867	my %row = ( recval => $reverse_typemap{SOA}, recname => 'SOA' );
2868	$row{tselect} = 1 if $reverse_typemap{SOA} == $type;
2869	push @typelist, \%row;
2870	}
2871
2872	return \@typelist;
2873	} # end getTypelist()
2874
2875
2876	## DNSDB::parentID()
2877	# Get ID of entity that is nearest parent to requested id
2878	# Takes a database handle and a hash of entity ID, entity type, optional parent type flag
2879	# (domain/reverse zone or group), and optional default/live and forward/reverse flags
2880	# Returns the ID or undef on failure
2881	sub parentID {
2882	my $dbh = shift;
2883
2884	my %args = @_;
2885
2886	# clean up the parent-type. Set it to group if not set; coerce revzone to domain for simpler logic
2887	$args{partype} = 'group' if !$args{partype};
2888	$args{partype} = 'domain' if $args{partype} eq 'revzone';
2889
2890	# clean up defrec and revrec. default to live record, forward zone
2891	$args{defrec} = 'n' if !$args{defrec};
2892	$args{revrec} = 'n' if !$args{revrec};
2893
2894	if ($par_type{$args{partype}} eq 'domain') {
2895	# only live records can have a domain/zone parent
2896	return unless ($args{type} eq 'record' && $args{defrec} eq 'n');
2897	my $result = $dbh->selectrow_hashref("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
2898	" FROM records WHERE record_id = ?",
2899	undef, ($args{id}) ) or return;
2900	return $result;
2901	} else {
2902	# snag some arguments that will either fall through or be overwritten to save some code duplication
2903	my $tmpid = $args{id};
2904	my $type = $args{type};
2905	if ($type eq 'record' && $args{defrec} eq 'n') {
2906	# Live records go through the records table first.
2907	($tmpid) = $dbh->selectrow_array("SELECT ".($args{revrec} eq 'n' ? 'domain_id' : 'rdns_id').
2908	" FROM records WHERE record_id = ?",
2909	undef, ($args{id}) ) or return;
2910	$type = ($args{revrec} eq 'n' ? 'domain' : 'revzone');
2911	}
2912	my ($result) = $dbh->selectrow_array("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?",
2913	undef, ($tmpid) );
2914	return $result;
2915	}
2916	# should be impossible to get here with even remotely sane arguments
2917	return;
2918	} # end parentID()
2919
2920
2921	## DNSDB::isParent()
2922	# Returns true if $id1 is a parent of $id2, false otherwise
2923	sub isParent {
2924	my $dbh = shift;
2925	my $id1 = shift;
2926	my $type1 = shift;
2927	my $id2 = shift;
2928	my $type2 = shift;
2929	##todo: immediate, secondary, full (default)
2930
2931	# Return false on invalid types
2932	return 0 if !grep /^$type1$/, ('record','defrec','defrevrec','user','domain','revzone','group');
2933	return 0 if !grep /^$type2$/, ('record','defrec','defrevrec','user','domain','revzone','group');
2934
2935	# Return false on impossible relations
2936	return 0 if $type1 eq 'record'; # nothing may be a child of a record
2937	return 0 if $type1 eq 'defrec'; # nothing may be a child of a record
2938	return 0 if $type1 eq 'defrevrec'; # nothing may be a child of a record
2939	return 0 if $type1 eq 'user'; # nothing may be child of a user
2940	return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record
2941	return 0 if $type1 eq 'revzone' && $type2 ne 'record';# reverse zone may not be a parent of anything other than a record
2942
2943	# ennnhhhh.... if we're passed an id of 0, it will never be found. usual
2944	# case would be the UI creating a new <thing>, and so we don't have an ID for
2945	# <thing> to look up yet. in that case the UI should check the parent as well.
2946	return 0 if $id1 == 0; # nothing can have a parent id of 0
2947	return 1 if $id2 == 0; # anything could have a child id of 0 (or "unknown")
2948
2949	# group 1 is the ultimate root parent
2950	return 1 if $type1 eq 'group' && $id1 == 1;
2951
2952	# groups are always (a) parent of themselves
2953	return 1 if $type1 eq 'group' && $type2 eq 'group' && $id1 == $id2;
2954
2955	my $id = $id2;
2956	my $type = $type2;
2957	my $foundparent = 0;
2958
2959	# Records are the only entity with two possible parents. We need to split the parent checks on
2960	# domain/rdns.
2961	if ($type eq 'record') {
2962	my ($dom,$rdns) = $dbh->selectrow_array("SELECT domain_id,rdns_id FROM records WHERE record_id=?",
2963	undef, ($id));
2964	# check immediate parent against request
2965	return 1 if $type1 eq 'domain' && $id1 == $dom;
2966	return 1 if $type1 eq 'revzone' && $id1 == $rdns;
2967	# if request is group, check both parents. Only check if the parent is nonzero though.
2968	return 1 if $dom && isParent($dbh, $id1, $type1, $dom, 'domain');
2969	return 1 if $rdns && isParent($dbh, $id1, $type1, $rdns, 'revzone');
2970	# exit here since we've executed the loop below by proxy in the above recursive calls.
2971	return 0;
2972	}
2973
2974	# almost the same loop as getParents() above
2975	my $limiter = 0;
2976	while (1) {
2977	my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?";
2978	my $result = $dbh->selectrow_hashref($sql,
2979	undef, ($id) );
2980	if (!$result) {
2981	$limiter++;
2982	##fixme: how often will this happen on a live site? fail at max limiter <n>?
2983	warn "no results looking for $sql with id $id (depth $limiter)\n";
2984	last;
2985	}
2986	if ($result && $result->{$par_col{$type}} == $id1) {
2987	$foundparent = 1;
2988	last;
2989	} else {
2990	##fixme: do we care about trying to return a "no such record/domain/user/group" error?
2991	# should be impossible to create an inconsistent DB just with API calls.
2992	warn $dbh->errstr." $sql, $id" if $dbh->errstr;
2993	}
2994	# group 1 is its own parent. need this here more to break strange loops than for detecting a parent
2995	last if $result->{$par_col{$type}} == 1;
2996	$id = $result->{$par_col{$type}};
2997	$type = $par_type{$type};
2998	}
2999
3000	return $foundparent;
3001	} # end isParent()
3002
3003
3004	## DNSDB::zoneStatus()
3005	# Returns and optionally sets a zone's status
3006	# Takes a database handle, domain/revzone ID, forward/reverse flag, and optionally a status argument
3007	# Returns status, or undef on errors.
3008	sub zoneStatus {
3009	my $dbh = shift;
3010	my $id = shift;
3011	my $revrec = shift;
3012	my $newstatus = shift \|\| 'mu';
3013
3014	return undef if $id !~ /^\d+$/;
3015
3016	# Allow transactions, and raise an exception on errors so we can catch it later.
3017	# Use local to make sure these get "reset" properly on exiting this block
3018	local $dbh->{AutoCommit} = 0;
3019	local $dbh->{RaiseError} = 1;
3020
3021	if ($newstatus ne 'mu') {
3022	# ooo, fun! let's see what we were passed for status
3023	eval {
3024	$newstatus = 0 if $newstatus eq 'domoff';
3025	$newstatus = 1 if $newstatus eq 'domon';
3026	$dbh->do("UPDATE ".($revrec eq 'n' ? 'domains' : 'revzones')." SET status=? WHERE ".
3027	($revrec eq 'n' ? 'domain_id' : 'rdns_id')."=?", undef, ($newstatus,$id) );
3028
3029	##fixme switch to more consise "Enabled <domain"/"Disabled <domain>" as with users?
3030	$resultstr = "Changed ".($revrec eq 'n' ? domainName($dbh, $id) : revName($dbh, $id)).
3031	" state to ".($newstatus ? 'active' : 'inactive');
3032
3033	my %loghash;
3034	$loghash{domain_id} = $id if $revrec eq 'n';
3035	$loghash{rdns_id} = $id if $revrec eq 'y';
3036	$loghash{group_id} = parentID($dbh,
3037	(id => $id, type => ($revrec eq 'n' ? 'domain' : 'revzone'), revrec => $revrec) );
3038	$loghash{entry} = $resultstr;
3039	_log($dbh, %loghash);
3040
3041	$dbh->commit;
3042	};
3043	if ($@) {
3044	my $msg = $@;
3045	eval { $dbh->rollback; };
3046	$resultstr = '';
3047	$errstr = $msg;
3048	return;
3049	}
3050	}
3051
3052	my ($status) = $dbh->selectrow_array("SELECT status FROM ".
3053	($revrec eq 'n' ? "domains WHERE domain_id=?" : "revzones WHERE rdns_id=?"),
3054	undef, ($id) );
3055	return $status;
3056	} # end zoneStatus()
3057
3058
3059	## DNSDB::importAXFR
3060	# Import a domain via AXFR
3061	# Takes AXFR host, domain to transfer, group to put the domain in,
3062	# and optionally:
3063	# - active/inactive state flag (defaults to active)
3064	# - overwrite-SOA flag (defaults to off)
3065	# - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
3066	# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
3067	# if status is OK, but WARN includes conditions that are not fatal but should
3068	# really be reported.
3069	sub importAXFR {
3070	my $dbh = shift;
3071	my $ifrom_in = shift;
3072	my $domain = shift;
3073	my $group = shift;
3074	my $status = shift \|\| 1;
3075	my $rwsoa = shift \|\| 0;
3076	my $rwns = shift \|\| 0;
3077
3078	##fixme: add mode to delete&replace, merge+overwrite, merge new?
3079
3080	my $nrecs = 0;
3081	my $soaflag = 0;
3082	my $nsflag = 0;
3083	my $warnmsg = '';
3084	my $ifrom;
3085
3086	# choke on possible bad setting in ifrom
3087	# IPv4 and v6, and valid hostnames!
3088	($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
3089	return ('FAIL', "Bad AXFR source host $ifrom")
3090	unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
3091
3092	# Allow transactions, and raise an exception on errors so we can catch it later.
3093	# Use local to make sure these get "reset" properly on exiting this block
3094	local $dbh->{AutoCommit} = 0;
3095	local $dbh->{RaiseError} = 1;
3096
3097	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
3098	my $dom_id;
3099
3100	# quick check to start to see if we've already got one
3101	$sth->execute($domain);
3102	($dom_id) = $sth->fetchrow_array;
3103
3104	return ('FAIL', "Domain already exists") if $dom_id;
3105
3106	eval {
3107	# can't do this, can't nest transactions. sigh.
3108	#my ($dcode, $dmsg) = addDomain(dbh, domain, group, status);
3109
3110	##fixme: serial
3111	my $sth = $dbh->prepare("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)");
3112	$sth->execute($domain,$group,$status);
3113
3114	## bizarre DBI<->Net::DNS interaction bug:
3115	## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
3116	## fixed, apparently I was doing something odd, but not certain what it was that
3117	## caused a commit instead of barfing
3118
3119	# get domain id so we can do the records
3120	$sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
3121	$sth->execute($domain);
3122	($dom_id) = $sth->fetchrow_array();
3123
3124	my $res = Net::DNS::Resolver->new;
3125	$res->nameservers($ifrom);
3126	$res->axfr_start($domain)
3127	or die "Couldn't begin AXFR\n";
3128
3129	while (my $rr = $res->axfr_next()) {
3130	my $type = $rr->type;
3131
3132	my $sql = "INSERT INTO records (domain_id,host,type,ttl,val";
3133	my $vallen = "?,?,?,?,?";
3134
3135	$soaflag = 1 if $type eq 'SOA';
3136	$nsflag = 1 if $type eq 'NS';
3137
3138	my @vallist = ($dom_id, $rr->name, $reverse_typemap{$type}, $rr->ttl);
3139
3140	# "Primary" types:
3141	# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
3142	# maybe KEY
3143
3144	# nasty big ugly case-like thing here, since we have to do some different
3145	# processing depending on the record. le sigh.
3146
3147	##fixme: what record types other than TXT can/will have >255-byte payloads?
3148
3149	if ($type eq 'A') {
3150	push @vallist, $rr->address;
3151	} elsif ($type eq 'NS') {
3152	# hmm. should we warn here if subdomain NS'es are left alone?
3153	next if ($rwns && ($rr->name eq $domain));
3154	push @vallist, $rr->nsdname;
3155	$nsflag = 1;
3156	} elsif ($type eq 'CNAME') {
3157	push @vallist, $rr->cname;
3158	} elsif ($type eq 'SOA') {
3159	next if $rwsoa;
3160	$vallist[1] = $rr->mname.":".$rr->rname;
3161	push @vallist, ($rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum);
3162	$soaflag = 1;
3163	} elsif ($type eq 'PTR') {
3164	push @vallist, $rr->ptrdname;
3165	# hmm. PTR records should not be in forward zones.
3166	} elsif ($type eq 'MX') {
3167	$sql .= ",distance";
3168	$vallen .= ",?";
3169	push @vallist, $rr->exchange;
3170	push @vallist, $rr->preference;
3171	} elsif ($type eq 'TXT') {
3172	##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
3173	## but don't really seem enthusiastic about it.
3174	my $rrdata = $rr->txtdata;
3175	push @vallist, $rrdata;
3176	} elsif ($type eq 'SPF') {
3177	##fixme: and the same caveat here, since it is apparently a clone of ::TXT
3178	my $rrdata = $rr->txtdata;
3179	push @vallist, $rrdata;
3180	} elsif ($type eq 'AAAA') {
3181	push @vallist, $rr->address;
3182	} elsif ($type eq 'SRV') {
3183	$sql .= ",distance,weight,port" if $type eq 'SRV';
3184	$vallen .= ",?,?,?" if $type eq 'SRV';
3185	push @vallist, $rr->target;
3186	push @vallist, $rr->priority;
3187	push @vallist, $rr->weight;
3188	push @vallist, $rr->port;
3189	} elsif ($type eq 'KEY') {
3190	# we don't actually know what to do with these...
3191	push @vallist, ($rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname);
3192	} else {
3193	my $rrdata = $rr->rdatastr;
3194	push @vallist, $rrdata;
3195	# Finding a different record type is not fatal.... just problematic.
3196	# We may not be able to export it correctly.
3197	$warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
3198	}
3199
3200	# BIND supports:
3201	# A CNAME HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) MX NS NULL
3202	# PTR SOA TXT WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX
3203	# ... if one can ever find the right magic to format them correctly
3204
3205	# Net::DNS supports:
3206	# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
3207	# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
3208	# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
3209
3210	$sth = $dbh->prepare($sql.") VALUES (".$vallen.")") or die "problem preparing record insert SQL\n";
3211	$sth->execute(@vallist) or die "failed to insert ".$rr->string.": ".$sth->errstr."\n";
3212
3213	$nrecs++;
3214
3215	} # while axfr_next
3216
3217	# Overwrite SOA record
3218	if ($rwsoa) {
3219	$soaflag = 1;
3220	my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
3221	my $sthputsoa = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
3222	$sthgetsoa->execute($group,$reverse_typemap{SOA});
3223	while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
3224	$host =~ s/DOMAIN/$domain/g;
3225	$val =~ s/DOMAIN/$domain/g;
3226	$sthputsoa->execute($dom_id,$host,$reverse_typemap{SOA},$val,$ttl);
3227	}
3228	}
3229
3230	# Overwrite NS records
3231	if ($rwns) {
3232	$nsflag = 1;
3233	my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
3234	my $sthputns = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
3235	$sthgetns->execute($group,$reverse_typemap{NS});
3236	while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
3237	$host =~ s/DOMAIN/$domain/g;
3238	$val =~ s/DOMAIN/$domain/g;
3239	$sthputns->execute($dom_id,$host,$reverse_typemap{NS},$val,$ttl);
3240	}
3241	}
3242
3243	die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
3244	die "Bad zone: No SOA record!\n" if !$soaflag;
3245	die "Bad zone: No NS records!\n" if !$nsflag;
3246
3247	$dbh->commit;
3248
3249	};
3250
3251	if ($@) {
3252	my $msg = $@;
3253	eval { $dbh->rollback; };
3254	return ('FAIL',$msg." $warnmsg");
3255	} else {
3256	return ('WARN', $warnmsg) if $warnmsg;
3257	return ('OK',"Imported OK");
3258	}
3259
3260	# it should be impossible to get here.
3261	return ('WARN',"OOOK!");
3262	} # end importAXFR()
3263
3264
3265	## DNSDB::export()
3266	# Export the DNS database, or a part of it
3267	# Takes database handle, export type, optional arguments depending on type
3268	# Writes zone data to targets as appropriate for type
3269	sub export {
3270	my $dbh = shift;
3271	my $target = shift;
3272
3273	if ($target eq 'tiny') {
3274	__export_tiny($dbh,@_);
3275	}
3276	# elsif ($target eq 'foo') {
3277	# __export_foo($dbh,@_);
3278	#}
3279	# etc
3280
3281	} # end export()
3282
3283
3284	## DNSDB::__export_tiny
3285	# Internal sub to implement tinyDNS (compatible) export
3286	# Takes database handle, filehandle to write export to, optional argument(s)
3287	# to determine which data gets exported
3288	sub __export_tiny {
3289	my $dbh = shift;
3290	my $datafile = shift;
3291
3292	##fixme: slurp up further options to specify particular zone(s) to export
3293
3294	## Convert a bare number into an octal-coded pair of octets.
3295	# Take optional arg to indicate a decimal or hex input. Defaults to hex.
3296	sub octalize {
3297	my $tmp = shift;
3298	my $srctype = shift \|\| 'h'; # default assumes hex string
3299	$tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
3300	$tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
3301	my @o = ($tmp =~ /^(..)(..)$/); # split into octets
3302	return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
3303	}
3304
3305	##fixme: fail if $datafile isn't an open, writable file
3306
3307	# easy case - export all evarything
3308	# not-so-easy case - export item(s) specified
3309	# todo: figure out what kind of list we use to export items
3310
3311	my $domsth = $dbh->prepare("SELECT domain_id,domain,status FROM domains WHERE status=1");
3312	my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl ".
3313	"FROM records WHERE domain_id=?");
3314	$domsth->execute();
3315	while (my ($domid,$dom,$domstat) = $domsth->fetchrow_array) {
3316	$recsth->execute($domid);
3317	while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $recsth->fetchrow_array) {
3318	##fixme: need to store location in the db, and retrieve it here.
3319	# temporarily hardcoded to empty so we can include it further down.
3320	my $loc = '';
3321
3322	##fixme: record validity timestamp. tinydns supports fiddling with timestamps.
3323	# note $ttl must be set to 0 if we want to use tinydns's auto-expiring timestamps.
3324	# timestamps are TAI64
3325	# ~~ 2^62 + time()
3326	my $stamp = '';
3327
3328	# raw packet in unknown format: first byte indicates length
3329	# of remaining data, allows up to 255 raw bytes
3330
3331	##fixme? append . to all host/val hostnames
3332	if ($typemap{$type} eq 'SOA') {
3333
3334	# host contains pri-ns:responsible
3335	# val is abused to contain refresh:retry:expire:minttl
3336	##fixme: "manual" serial vs tinydns-autoserial
3337	# let's be explicit about abusing $host and $val
3338	my ($email, $primary) = (split /:/, $host)[0,1];
3339	my ($refresh, $retry, $expire, $min_ttl) = (split /:/, $val)[0,1,2,3];
3340	print $datafile "Z$dom:$primary:$email"."::$refresh:$retry:$expire:$min_ttl:$ttl:$stamp:$loc\n";
3341
3342	} elsif ($typemap{$type} eq 'A') {
3343
3344	print $datafile "+$host:$val:$ttl:$stamp:$loc\n";
3345
3346	} elsif ($typemap{$type} eq 'NS') {
3347
3348	print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n";
3349
3350	} elsif ($typemap{$type} eq 'AAAA') {
3351
3352	print $datafile ":$host:28:";
3353	my $altgrp = 0;
3354	my @altconv;
3355	# Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing)
3356	foreach (split /:/, $val) {
3357	if (/^$/) {
3358	# flag blank entry; this is a series of 0's of (currently) unknown length
3359	$altconv[$altgrp++] = 's';
3360	} else {
3361	# call sub to convert 1-4 hex digits to 2 string-rep octal bytes
3362	$altconv[$altgrp++] = octalize($_)
3363	}
3364	}
3365	foreach my $octet (@altconv) {
3366	# if not 's', output
3367	print $datafile $octet unless $octet =~ /^s$/;
3368	# if 's', output (9-array length)x literal '\000\000'
3369	print $datafile '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
3370	}
3371	print $datafile ":$ttl:$stamp:$loc\n";
3372
3373	} elsif ($typemap{$type} eq 'MX') {
3374
3375	print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n";
3376
3377	} elsif ($typemap{$type} eq 'TXT') {
3378
3379	##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
3380	$val =~ s/:/\\072/g; # may need to replace other symbols
3381	print $datafile "'$host:$val:$ttl:$stamp:$loc\n";
3382
3383	# by-hand TXT
3384	#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
3385	#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
3386	#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
3387
3388	#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
3389	#:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600
3390
3391	# very long TXT record as brought in by axfr-get
3392	# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
3393	# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
3394	#:longtxt.deepnet.cx:16:
3395	#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
3396	#\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
3397	#\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long.
3398	#:3600
3399
3400	} elsif ($typemap{$type} eq 'CNAME') {
3401
3402	print $datafile "C$host:$val:$ttl:$stamp:$loc\n";
3403
3404	} elsif ($typemap{$type} eq 'SRV') {
3405
3406	# data is two-byte values for priority, weight, port, in that order,
3407	# followed by length/string data
3408
3409	print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d');
3410
3411	$val .= '.' if $val !~ /\.$/;
3412	foreach (split /\./, $val) {
3413	printf $datafile "\\%0.3o%s", length($_), $_;
3414	}
3415	print $datafile "\\000:$ttl:$stamp:$loc\n";
3416
3417	} elsif ($typemap{$type} eq 'RP') {
3418
3419	# RP consists of two mostly free-form strings.
3420	# The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
3421	# The second is the "hostname" of a TXT record with more info.
3422	print $datafile ":$host:17:";
3423	my ($who,$what) = split /\s/, $val;
3424	foreach (split /\./, $who) {
3425	printf $datafile "\\%0.3o%s", length($_), $_;
3426	}
3427	print $datafile '\000';
3428	foreach (split /\./, $what) {
3429	printf $datafile "\\%0.3o%s", length($_), $_;
3430	}
3431	print $datafile "\\000:$ttl:$stamp:$loc\n";
3432
3433	} elsif ($typemap{$type} eq 'PTR') {
3434
3435	# must handle both IPv4 and IPv6
3436	##work
3437	# data should already be in suitable reverse order.
3438	print $datafile "^$host:$val:$ttl:$stamp:$loc\n";
3439
3440	} else {
3441	# raw record. we don't know what's in here, so we ASS-U-ME the user has
3442	# put it in correctly, since either the user is messing directly with the
3443	# database, or the record was imported via AXFR
3444	# <split by char>
3445	# convert anything not a-zA-Z0-9.- to octal coding
3446
3447	##fixme: add flag to export "unknown" record types - note we'll probably end up
3448	# mangling them since they were written to the DB from Net::DNS::RR::<type>->rdatastr.
3449	#print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n";
3450
3451	} # record type if-else
3452
3453	} # while ($recsth)
3454	} # while ($domsth)
3455	} # end __export_tiny()
3456
3457
3458	## DNSDB::mailNotify()
3459	# Sends notification mail to recipients regarding a DNSDB operation
3460	sub mailNotify {
3461	my $dbh = shift;
3462	my ($subj,$message) = @_;
3463
3464	return if $config{mailhost} eq 'smtp.example.com'; # do nothing if still using default SMTP host.
3465
3466	my $mailer = Net::SMTP->new($config{mailhost}, Hello => "dnsadmin.$config{domain}");
3467
3468	my $mailsender = ($config{mailsender} ? $config{mailsender} : $config{mailnotify});
3469
3470	$mailer->mail($mailsender);
3471	$mailer->to($config{mailnotify});
3472	$mailer->data("From: \"$config{mailname}\" <$mailsender>\n",
3473	"To: <$config{mailnotify}>\n",
3474	"Date: ".strftime("%a, %d %b %Y %H:%M:%S %z",localtime)."\n",
3475	"Subject: $subj\n",
3476	"X-Mailer: DNSAdmin Notify v".sprintf("%.1d",$DNSDB::VERSION)."\n",
3477	"Organization: $config{orgname}\n",
3478	"\n$message\n");
3479	$mailer->quit;
3480	}
3481
3482	# shut Perl up
3483	1;

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