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source: trunk/DNSDB.pm@ 185

Last change on this file since 185 was 185, checked in by Kris Deugau, 13 years ago

/trunk

Fix isParent() to return correct results for checks where the
checked parent is not the immediate parent of the checked child.
This triggered a UI glitch where the group tree was not properly
expanded to the current group if a sub-sub-sub group of the
login group was set as the current group.

Clean up stale comments in fill_grptree

Property svn:keywords set to Date Rev Author Id

File size: 60.0 KB

Line
1	# dns/trunk/DNSDB.pm
2	# Abstraction functions for DNS administration
3	###
4	# SVN revision info
5	# $Date: 2011-12-06 18:00:11 +0000 (Tue, 06 Dec 2011) $
6	# SVN revision $Rev: 185 $
7	# Last update by $Author: kdeugau $
8	###
9	# Copyright (C) 2008-2011 - Kris Deugau <kdeugau@deepnet.cx>
10
11	package DNSDB;
12
13	use strict;
14	use warnings;
15	use Exporter;
16	use DBI;
17	use Net::DNS;
18	use Crypt::PasswdMD5;
19	#use Net::SMTP;
20	use NetAddr::IP;
21	#use POSIX;
22	use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
23
24	$VERSION = 0.1;
25	@ISA = qw(Exporter);
26	@EXPORT_OK = qw(
27	&initGlobals
28	&initPermissions &getPermissions &changePermissions &comparePermissions
29	&changeGroup
30	&loadConfig &connectDB &finish
31	&addDomain &delDomain &domainName &domainID
32	&addGroup &delGroup &getChildren &groupName
33	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
34	&getSOA &getRecLine &getDomRecs &getRecCount
35	&addRec &updateRec &delRec
36	&getParents
37	&isParent
38	&domStatus &importAXFR
39	&export
40	%typemap %reverse_typemap %config
41	%permissions @permtypes $permlist
42	);
43
44	@EXPORT = (); # Export nothing by default.
45	%EXPORT_TAGS = ( ALL => [qw(
46	&initGlobals
47	&initPermissions &getPermissions &changePermissions &comparePermissions
48	&changeGroup
49	&loadConfig &connectDB &finish
50	&addDomain &delDomain &domainName &domainID
51	&addGroup &delGroup &getChildren &groupName
52	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
53	&getSOA &getRecLine &getDomRecs &getRecCount
54	&addRec &updateRec &delRec
55	&getParents
56	&isParent
57	&domStatus &importAXFR
58	&export
59	%typemap %reverse_typemap %config
60	%permissions @permtypes $permlist
61	)]
62	);
63
64	our $group = 1;
65	our $errstr = '';
66
67	# Halfway sane defaults for SOA, TTL, etc.
68	# serial defaults to 0 for convenience.
69	# value will be either YYYYMMDDNN for BIND/etc, or auto-internal for tinydns
70	our %def = qw (
71	contact hostmaster.DOMAIN
72	prins ns1.myserver.com
73	serial 0
74	soattl 86400
75	refresh 10800
76	retry 3600
77	expire 604800
78	minttl 10800
79	ttl 10800
80	);
81
82	# Arguably defined wholly in the db, but little reason to change without supporting code changes
83	our @permtypes = qw (
84	group_edit group_create group_delete
85	user_edit user_create user_delete
86	domain_edit domain_create domain_delete
87	record_edit record_create record_delete
88	self_edit admin
89	);
90	our $permlist = join(',',@permtypes);
91
92	# DNS record type map and reverse map.
93	# loaded from the database, from http://www.iana.org/assignments/dns-parameters
94	our %typemap;
95	our %reverse_typemap;
96
97	our %permissions;
98
99	# Prepopulate a basic config. Note some of these will cause errors if left unset.
100	our %config = (
101	# Database connection info
102	dbname => 'dnsdb',
103	dbuser => 'dnsdb',
104	dbpass => 'secret',
105	dbhost => '',
106
107	# Email notice settings
108	mailhost => 'smtp.example.com',
109	mailsender => 'dnsdb@example.com',
110	mailname => 'DNS Administration',
111
112	# Template directory
113	templatedir => 'templates/',
114	# fmeh. this is a real web path, not a logical internal one. hm..
115	# cssdir => 'templates/',
116
117	# Session params
118	timeout => '3600' # 1 hour default
119	);
120
121
122	##
123	## Initialization and cleanup subs
124	##
125
126
127	## DNSDB::loadConfig()
128	# Load the minimum required initial state (DB connect info) from a config file
129	# Load misc other bits while we're at it.
130	# Takes an optional basename and config path to look for
131	# Populates the %config and %def hashes
132	sub loadConfig {
133	my $basename = shift \|\| ''; # this will work OK
134
135	my $deferr = ''; # place to put error from default config file in case we can't find either one
136
137	my $configroot = '/etc/dnsdb';
138	$configroot = '' if $basename =~ m\|^/\|;
139	$basename .= ".conf" if $basename !~ /\.conf$/;
140	my $defconfig = "$configroot/dnsdb.conf";
141	my $siteconfig = "$configroot/$basename";
142
143	# System defaults
144	__cfgload("$defconfig") or $deferr = $errstr;
145
146	# Per-site-ish settings.
147	if ($basename ne '.conf') {
148	unless (__cfgload("$siteconfig")) {
149	$errstr = ($deferr ? "Error opening default config file $defconfig: $deferr\n" : '').
150	"Error opening site config file $siteconfig";
151	return;
152	}
153	}
154
155	# All good, clear the error and go home.
156	$errstr = '';
157	return 1;
158	} # end loadConfig()
159
160
161	## DNSDB::__cfgload()
162	# Private sub to parse a config file and load it into %config
163	# Takes a file handle on an open config file
164	sub __cfgload {
165	$errstr = '';
166	my $cfgfile = shift;
167
168	if (open CFG, "<$cfgfile") {
169	while (<CFG>) {
170	chomp;
171	s/^\s*//;
172	next if /^#/;
173	next if /^$/;
174	# hmm. more complex bits in this file might require [heading] headers, maybe?
175	# $mode = $1 if /^\[(a-z)+]/;
176	# DB connect info
177	$config{dbname} = $1 if /^dbname\s=\s([a-z0-9_.-]+)/i;
178	$config{dbuser} = $1 if /^dbuser\s=\s([a-z0-9_.-]+)/i;
179	$config{dbpass} = $1 if /^dbpass\s=\s([a-z0-9_.-]+)/i;
180	$config{dbhost} = $1 if /^dbhost\s=\s([a-z0-9_.-]+)/i;
181	# SOA defaults
182	$def{contact} = $1 if /^contact\s=\s([a-z0-9_.-]+)/i;
183	$def{prins} = $1 if /^prins\s=\s([a-z0-9_.-]+)/i;
184	$def{soattl} = $1 if /^soattl\s=\s([a-z0-9_.-]+)/i;
185	$def{refresh} = $1 if /^refresh\s=\s([a-z0-9_.-]+)/i;
186	$def{retry} = $1 if /^retry\s=\s([a-z0-9_.-]+)/i;
187	$def{expire} = $1 if /^expire\s=\s([a-z0-9_.-]+)/i;
188	$def{minttl} = $1 if /^minttl\s=\s([a-z0-9_.-]+)/i;
189	$def{ttl} = $1 if /^ttl\s=\s([a-z0-9_.-]+)/i;
190	# Mail settings
191	$config{mailhost} = $1 if /^mailhost\s=\s([a-z0-9_.-]+)/i;
192	$config{mailsender} = $1 if /^mailsender\s=\s([a-z0-9_.@-]+)/i;
193	$config{mailname} = $1 if /^mailname\s=\s([a-z0-9\s_.-]+)/i;
194	# session - note this is fed directly to CGI::Session
195	$config{timeout} = $1 if /^[tT][iI][mM][eE][oO][uU][tT]\s=\s(\d+[smhdwMy]?)/;
196	}
197	close CFG;
198	} else {
199	$errstr = $!;
200	return;
201	}
202	return 1;
203	} # end __cfgload()
204
205
206	## DNSDB::connectDB()
207	# Creates connection to DNS database.
208	# Requires the database name, username, and password.
209	# Returns a handle to the db.
210	# Set up for a PostgreSQL db; could be any transactional DBMS with the
211	# right changes.
212	sub connectDB {
213	$errstr = '';
214	my $dbname = shift;
215	my $user = shift;
216	my $pass = shift;
217	my $dbh;
218	my $DSN = "DBI:Pg:dbname=$dbname";
219
220	my $host = shift;
221	$DSN .= ";host=$host" if $host;
222
223	# Note that we want to autocommit by default, and we will turn it off locally as necessary.
224	# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
225	$dbh = DBI->connect($DSN, $user, $pass, {
226	AutoCommit => 1,
227	PrintError => 0
228	})
229	or return (undef, $DBI::errstr) if(!$dbh);
230
231	# Return here if we can't select. Note that this indicates a
232	# problem executing the select.
233	my $sth = $dbh->prepare("select group_id from groups limit 1");
234	$sth->execute();
235	return (undef,$DBI::errstr) if ($sth->err);
236
237	# See if the select returned anything (or null data). This should
238	# succeed if the select executed, but...
239	$sth->fetchrow();
240	return (undef,$DBI::errstr) if ($sth->err);
241
242	$sth->finish;
243
244	# If we get here, we should be OK.
245	return ($dbh,"DB connection OK");
246	} # end connectDB
247
248
249	## DNSDB::finish()
250	# Cleans up after database handles and so on.
251	# Requires a database handle
252	sub finish {
253	my $dbh = $_[0];
254	$dbh->disconnect;
255	} # end finish
256
257
258	## DNSDB::initGlobals()
259	# Initialize global variables
260	# NB: this does NOT include web-specific session variables!
261	# Requires a database handle
262	sub initGlobals {
263	my $dbh = shift;
264
265	# load system-wide site defaults and things from config file
266	if (open SYSDEFAULTS, "</etc/dnsdb.conf") {
267	##fixme - error check!
268	while (<SYSDEFAULTS>) {
269	next if /^\s*#/;
270	$def{contact} = $1 if /contact ?= ?([a-z0-9_.-]+)/i;
271	$def{prins} = $1 if /prins ?= ?([a-z0-9_.-]+)/i;
272	$def{soattl} = $1 if /soattl ?= ?([a-z0-9_.-]+)/i;
273	$def{refresh} = $1 if /refresh ?= ?([a-z0-9_.-]+)/i;
274	$def{retry} = $1 if /retry ?= ?([a-z0-9_.-]+)/i;
275	$def{expire} = $1 if /expire ?= ?([a-z0-9_.-]+)/i;
276	$def{minttl} = $1 if /minttl ?= ?([a-z0-9_.-]+)/i;
277	$def{ttl} = $1 if /ttl ?= ?([a-z0-9_.-]+)/i;
278	##fixme? load DB user/pass from config file?
279	}
280	}
281	# load from database
282	my $sth = $dbh->prepare("select val,name from rectypes");
283	$sth->execute;
284	while (my ($recval,$recname) = $sth->fetchrow_array()) {
285	$typemap{$recval} = $recname;
286	$reverse_typemap{$recname} = $recval;
287	}
288	} # end initGlobals
289
290
291	## DNSDB::initPermissions()
292	# Set up permissions global
293	# Takes database handle and UID
294	sub initPermissions {
295	my $dbh = shift;
296	my $uid = shift;
297
298	# %permissions = $(getPermissions($dbh,'user',$uid));
299	getPermissions($dbh, 'user', $uid, \%permissions);
300
301	} # end initPermissions()
302
303
304	## DNSDB::getPermissions()
305	# Get permissions from DB
306	# Requires DB handle, group or user flag, ID, and hashref.
307	sub getPermissions {
308	my $dbh = shift;
309	my $type = shift;
310	my $id = shift;
311	my $hash = shift;
312
313	my $sql = qq(
314	SELECT
315	p.admin,p.self_edit,
316	p.group_create,p.group_edit,p.group_delete,
317	p.user_create,p.user_edit,p.user_delete,
318	p.domain_create,p.domain_edit,p.domain_delete,
319	p.record_create,p.record_edit,p.record_delete
320	FROM permissions p
321	);
322	if ($type eq 'group') {
323	$sql .= qq(
324	JOIN groups g ON g.permission_id=p.permission_id
325	WHERE g.group_id=?
326	);
327	} else {
328	$sql .= qq(
329	JOIN users u ON u.permission_id=p.permission_id
330	WHERE u.user_id=?
331	);
332	}
333
334	my $sth = $dbh->prepare($sql);
335
336	$sth->execute($id) or die "argh: ".$sth->errstr;
337
338	# my $permref = $sth->fetchrow_hashref;
339	# return $permref;
340	# $hash = $permref;
341	# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
342	($hash->{admin},$hash->{self_edit},
343	$hash->{group_create},$hash->{group_edit},$hash->{group_delete},
344	$hash->{user_create},$hash->{user_edit},$hash->{user_delete},
345	$hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
346	$hash->{record_create},$hash->{record_edit},$hash->{record_delete})
347	= $sth->fetchrow_array;
348
349	} # end getPermissions()
350
351
352	## DNSDB::changePermissions()
353	# Update an ACL entry
354	# Takes a db handle, type, owner-id, and hashref for the changed permissions.
355	sub changePermissions {
356	my $dbh = shift;
357	my $type = shift;
358	my $id = shift;
359	my $newperms = shift;
360	my $inherit = shift \|\| 0;
361
362	my $failmsg = '';
363
364	# see if we're switching from inherited to custom. for bonus points,
365	# snag the permid and parent permid anyway, since we'll need the permid
366	# to set/alter custom perms, and both if we're switching from custom to
367	# inherited.
368	my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id".
369	" FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
370	" JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
371	" WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
372	$sth->execute($id);
373
374	my ($wasinherited,$permid,$parpermid) = $sth->fetchrow_array;
375
376	# hack phtoui
377	# group id 1 is "special" in that it's it's own parent (err... possibly.)
378	# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
379	$wasinherited = 0 if ($type eq 'group' && $id == 1);
380
381	local $dbh->{AutoCommit} = 0;
382	local $dbh->{RaiseError} = 1;
383
384	# Wrap all the SQL in a transaction
385	eval {
386	if ($inherit) {
387
388	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
389	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
390	$dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
391
392	} else {
393
394	if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
395	##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
396	# ... if'n'when we have groups with fully inherited permissions.
397	# SQL is coo
398	$dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
399	"SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
400	($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
401	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
402	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
403	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
404	}
405
406	# and now set the permissions we were passed
407	foreach (@permtypes) {
408	if (defined ($newperms->{$_})) {
409	$dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
410	}
411	}
412
413	} # (inherited->)? custom
414
415	$dbh->commit;
416	}; # end eval
417	if ($@) {
418	my $msg = $@;
419	eval { $dbh->rollback; };
420	return ('FAIL',"$failmsg: $msg ($permid)");
421	} else {
422	return ('OK',$permid);
423	}
424
425	} # end changePermissions()
426
427
428	## DNSDB::comparePermissions()
429	# Compare two permission hashes
430	# Returns '>', '<', '=', '!'
431	sub comparePermissions {
432	my $p1 = shift;
433	my $p2 = shift;
434
435	my $retval = '='; # assume equality until proven otherwise
436
437	no warnings "uninitialized";
438
439	foreach (@permtypes) {
440	next if $p1->{$_} == $p2->{$_}; # equal is good
441	if ($p1->{$_} && !$p2->{$_}) {
442	if ($retval eq '<') { # if we've already found an unequal pair where
443	$retval = '!'; # $p2 has more access, and we now find a pair
444	last; # where $p1 has more access, the overall access
445	} # is neither greater or lesser, it's unequal.
446	$retval = '>';
447	}
448	if (!$p1->{$_} && $p2->{$_}) {
449	if ($retval eq '>') { # if we've already found an unequal pair where
450	$retval = '!'; # $p1 has more access, and we now find a pair
451	last; # where $p2 has more access, the overall access
452	} # is neither greater or lesser, it's unequal.
453	$retval = '<';
454	}
455	}
456	return $retval;
457	} # end comparePermissions()
458
459
460	## DNSDB::changeGroup()
461	# Change group ID of an entity
462	# Takes a database handle, entity type, entity ID, and new group ID
463	sub changeGroup {
464	my $dbh = shift;
465	my $type = shift;
466	my $id = shift;
467	my $newgrp = shift;
468
469	##fixme: fail on not enough args
470	#return ('FAIL', "Missing
471
472	if ($type eq 'domain') {
473	$dbh->do("UPDATE domains SET group_id=? WHERE domain_id=?", undef, ($newgrp, $id))
474	or return ('FAIL','Group change failed: '.$dbh->errstr);
475	} elsif ($type eq 'user') {
476	$dbh->do("UPDATE users SET group_id=? WHERE user_id=?", undef, ($newgrp, $id))
477	or return ('FAIL','Group change failed: '.$dbh->errstr);
478	} elsif ($type eq 'group') {
479	$dbh->do("UPDATE groups SET parent_group_id=? WHERE group_id=?", undef, ($newgrp, $id))
480	or return ('FAIL','Group change failed: '.$dbh->errstr);
481	}
482	return ('OK','OK');
483	} # end changeGroup()
484
485
486	## DNSDB::_log()
487	# Log an action
488	# Internal sub
489	# Takes a database handle, <foo>, <bar>
490	sub _log {
491	} # end _log
492
493
494	##
495	## Processing subs
496	##
497
498	## DNSDB::addDomain()
499	# Add a domain
500	# Takes a database handle, domain name, numeric group, and boolean(ish) state (active/inactive)
501	# Returns a status code and message
502	sub addDomain {
503	$errstr = '';
504	my $dbh = shift;
505	return ('FAIL',"Need database handle") if !$dbh;
506	my $domain = shift;
507	return ('FAIL',"Domain must not be blank") if !$domain;
508	my $group = shift;
509	return ('FAIL',"Need group") if !defined($group);
510	my $state = shift;
511	return ('FAIL',"Need domain status") if !defined($state);
512
513	$state = 1 if $state =~ /^active$/;
514	$state = 1 if $state =~ /^on$/;
515	$state = 0 if $state =~ /^inactive$/;
516	$state = 0 if $state =~ /^off$/;
517
518	return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/;
519
520	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
521	my $dom_id;
522
523	# quick check to start to see if we've already got one
524	$sth->execute($domain);
525	($dom_id) = $sth->fetchrow_array;
526
527	return ('FAIL', "Domain already exists") if $dom_id;
528
529	# Allow transactions, and raise an exception on errors so we can catch it later.
530	# Use local to make sure these get "reset" properly on exiting this block
531	local $dbh->{AutoCommit} = 0;
532	local $dbh->{RaiseError} = 1;
533
534	# Wrap all the SQL in a transaction
535	eval {
536	# insert the domain...
537	my $sth = $dbh->prepare("insert into domains (domain,group_id,status) values (?,?,?)");
538	$sth->execute($domain,$group,$state);
539
540	# get the ID...
541	$sth = $dbh->prepare("select domain_id from domains where domain='$domain'");
542	$sth->execute;
543	($dom_id) = $sth->fetchrow_array();
544
545	# ... and now we construct the standard records from the default set. NB: group should be variable.
546	$sth = $dbh->prepare("select host,type,val,distance,weight,port,ttl from default_records where group_id=$group");
547	my $sth_in = $dbh->prepare("insert into records (domain_id,host,type,val,distance,weight,port,ttl)".
548	" values ($dom_id,?,?,?,?,?,?,?)");
549	$sth->execute;
550	while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $sth->fetchrow_array()) {
551	$host =~ s/DOMAIN/$domain/g;
552	$val =~ s/DOMAIN/$domain/g;
553	$sth_in->execute($host,$type,$val,$dist,$weight,$port,$ttl);
554	}
555
556	# once we get here, we should have suceeded.
557	$dbh->commit;
558	}; # end eval
559
560	if ($@) {
561	my $msg = $@;
562	eval { $dbh->rollback; };
563	return ('FAIL',$msg);
564	} else {
565	return ('OK',$dom_id);
566	}
567	} # end addDomain
568
569
570	## DNSDB::delDomain()
571	# Delete a domain.
572	# for now, just delete the records, then the domain.
573	# later we may want to archive it in some way instead (status code 2, for example?)
574	sub delDomain {
575	my $dbh = shift;
576	my $domid = shift;
577
578	# Allow transactions, and raise an exception on errors so we can catch it later.
579	# Use local to make sure these get "reset" properly on exiting this block
580	local $dbh->{AutoCommit} = 0;
581	local $dbh->{RaiseError} = 1;
582
583	my $failmsg = '';
584
585	# Wrap all the SQL in a transaction
586	eval {
587	my $sth = $dbh->prepare("delete from records where domain_id=?");
588	$failmsg = "Failure removing domain records";
589	$sth->execute($domid);
590	$sth = $dbh->prepare("delete from domains where domain_id=?");
591	$failmsg = "Failure removing domain";
592	$sth->execute($domid);
593
594	# once we get here, we should have suceeded.
595	$dbh->commit;
596	}; # end eval
597
598	if ($@) {
599	my $msg = $@;
600	eval { $dbh->rollback; };
601	return ('FAIL',"$failmsg: $msg");
602	} else {
603	return ('OK','OK');
604	}
605
606	} # end delDomain()
607
608
609	## DNSDB::domainName()
610	# Return the domain name based on a domain ID
611	# Takes a database handle and the domain ID
612	# Returns the domain name or undef on failure
613	sub domainName {
614	$errstr = '';
615	my $dbh = shift;
616	my $domid = shift;
617	my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
618	$errstr = $DBI::errstr if !$domname;
619	return $domname if $domname;
620	} # end domainName()
621
622
623	## DNSDB::domainID()
624	# Takes a database handle and domain name
625	# Returns the domain ID number
626	sub domainID {
627	$errstr = '';
628	my $dbh = shift;
629	my $domain = shift;
630	my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE domain=?", undef, ($domain) );
631	$errstr = $DBI::errstr if !$domid;
632	return $domid if $domid;
633	} # end domainID()
634
635
636	## DNSDB::addGroup()
637	# Add a group
638	# Takes a database handle, group name, parent group, hashref for permissions,
639	# and optional template-vs-cloneme flag
640	# Returns a status code and message
641	sub addGroup {
642	$errstr = '';
643	my $dbh = shift;
644	my $groupname = shift;
645	my $pargroup = shift;
646	my $permissions = shift;
647
648	# 0 indicates "custom", hardcoded.
649	# Any other value clones that group's default records, if it exists.
650	my $inherit = shift \|\| 0;
651	##fixme: need a flag to indicate clone records or <?> ?
652
653	# Allow transactions, and raise an exception on errors so we can catch it later.
654	# Use local to make sure these get "reset" properly on exiting this block
655	local $dbh->{AutoCommit} = 0;
656	local $dbh->{RaiseError} = 1;
657
658	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
659	my $group_id;
660
661	# quick check to start to see if we've already got one
662	$sth->execute($groupname);
663	($group_id) = $sth->fetchrow_array;
664
665	return ('FAIL', "Group already exists") if $group_id;
666
667	# Wrap all the SQL in a transaction
668	eval {
669	$sth = $dbh->prepare("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)");
670	$sth->execute($pargroup,$groupname);
671
672	$sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
673	$sth->execute($groupname);
674	my ($groupid) = $sth->fetchrow_array();
675
676	# Permissions
677	if ($inherit) {
678	} else {
679	my @permvals;
680	foreach (@permtypes) {
681	if (!defined ($permissions->{$_})) {
682	push @permvals, 0;
683	} else {
684	push @permvals, $permissions->{$_};
685	}
686	}
687
688	$sth = $dbh->prepare("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")");
689	$sth->execute($groupid,@permvals);
690
691	$sth = $dbh->prepare("SELECT permission_id FROM permissions WHERE group_id=?");
692	$sth->execute($groupid);
693	my ($permid) = $sth->fetchrow_array();
694
695	$dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
696	} # done permission fiddling
697
698	# Default records
699	$sth = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
700	"VALUES ($groupid,?,?,?,?,?,?,?)");
701	if ($inherit) {
702	# Duplicate records from parent. Actually relying on inherited records feels
703	# very fragile, and it would be problematic to roll over at a later time.
704	my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
705	$sth2->execute($pargroup);
706	while (my @clonedata = $sth2->fetchrow_array) {
707	$sth->execute(@clonedata);
708	}
709	} else {
710	##fixme: Hardcoding is Bad, mmmmkaaaay?
711	# reasonable basic defaults for SOA, MX, NS, and minimal hosting
712	# could load from a config file, but somewhere along the line we need hardcoded bits.
713	$sth->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
714	$sth->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
715	$sth->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
716	$sth->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
717	$sth->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
718	$sth->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
719	}
720
721	# once we get here, we should have suceeded.
722	$dbh->commit;
723	}; # end eval
724
725	if ($@) {
726	my $msg = $@;
727	eval { $dbh->rollback; };
728	return ('FAIL',$msg);
729	} else {
730	return ('OK','OK');
731	}
732
733	} # end addGroup()
734
735
736	## DNSDB::delGroup()
737	# Delete a group.
738	# Takes a group ID
739	# Returns a status code and message
740	sub delGroup {
741	my $dbh = shift;
742	my $groupid = shift;
743
744	# Allow transactions, and raise an exception on errors so we can catch it later.
745	# Use local to make sure these get "reset" properly on exiting this block
746	local $dbh->{AutoCommit} = 0;
747	local $dbh->{RaiseError} = 1;
748
749	##fixme: locate "knowable" error conditions and deal with them before the eval
750	# ... or inside, whatever.
751	# -> domains still exist in group
752	# -> ...
753	my $failmsg = '';
754
755	# Wrap all the SQL in a transaction
756	eval {
757	my $sth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?");
758	$sth->execute($groupid);
759	my ($domcnt) = $sth->fetchrow_array;
760	$failmsg = "Can't remove group ".groupName($dbh,$groupid);
761	die "$domcnt domains still in group\n" if $domcnt;
762
763	$sth = $dbh->prepare("delete from default_records where group_id=?");
764	$failmsg = "Failed to delete default records for ".groupName($dbh,$groupid);
765	$sth->execute($groupid);
766	$sth = $dbh->prepare("delete from groups where group_id=?");
767	$failmsg = "Failed to remove group ".groupName($dbh,$groupid);
768	$sth->execute($groupid);
769
770	# once we get here, we should have suceeded.
771	$dbh->commit;
772	}; # end eval
773
774	if ($@) {
775	my $msg = $@;
776	eval { $dbh->rollback; };
777	return ('FAIL',"$failmsg: $msg");
778	} else {
779	return ('OK','OK');
780	}
781	} # end delGroup()
782
783
784	## DNSDB::getChildren()
785	# Get a list of all groups whose parent^n is group <n>
786	# Takes a database handle, group ID, reference to an array to put the group IDs in,
787	# and an optional flag to return only immediate children or all children-of-children
788	# default to returning all children
789	# Calls itself
790	sub getChildren {
791	$errstr = '';
792	my $dbh = shift;
793	my $rootgroup = shift;
794	my $groupdest = shift;
795	my $immed = shift \|\| 'all';
796
797	# special break for default group; otherwise we get stuck.
798	if ($rootgroup == 1) {
799	# by definition, group 1 is the Root Of All Groups
800	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
801	($immed ne 'all' ? " AND parent_group_id=1" : ''));
802	$sth->execute;
803	while (my @this = $sth->fetchrow_array) {
804	push @$groupdest, @this;
805	}
806	} else {
807	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=?");
808	$sth->execute($rootgroup);
809	return if $sth->rows == 0;
810	my @grouplist;
811	while (my ($group) = $sth->fetchrow_array) {
812	push @$groupdest, $group;
813	getChildren($dbh,$group,$groupdest) if $immed eq 'all';
814	}
815	}
816	} # end getChildren()
817
818
819	## DNSDB::groupName()
820	# Return the group name based on a group ID
821	# Takes a database handle and the group ID
822	# Returns the group name or undef on failure
823	sub groupName {
824	$errstr = '';
825	my $dbh = shift;
826	my $groupid = shift;
827	my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
828	$sth->execute($groupid);
829	my ($groupname) = $sth->fetchrow_array();
830	$errstr = $DBI::errstr if !$groupname;
831	return $groupname if $groupname;
832	} # end groupName
833
834
835	## DNSDB::groupID()
836	# Return the group ID based on the group name
837	# Takes a database handle and the group name
838	# Returns the group ID or undef on failure
839	sub groupID {
840	$errstr = '';
841	my $dbh = shift;
842	my $group = shift;
843	my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group=?", undef, ($group) );
844	$errstr = $DBI::errstr if !$grpid;
845	return $grpid if $grpid;
846	} # end groupID()
847
848
849	## DNSDB::addUser()
850	# Add a user.
851	# Takes a DB handle, username, group ID, password, state (active/inactive).
852	# Optionally accepts:
853	# user type (user/admin) - defaults to user
854	# permissions string - defaults to inherit from group
855	# three valid forms:
856	# i - Inherit permissions
857	# c:<user_id> - Clone permissions from <user_id>
858	# C:<permission list> - Set these specific permissions
859	# first name - defaults to username
860	# last name - defaults to blank
861	# phone - defaults to blank (could put other data within column def)
862	# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
863	sub addUser {
864	$errstr = '';
865	my $dbh = shift;
866	my $username = shift;
867	my $group = shift;
868	my $pass = shift;
869	my $state = shift;
870
871	return ('FAIL', "Missing one or more required entries") if !defined($state);
872	return ('FAIL', "Username must not be blank") if !$username;
873
874	my $type = shift \|\| 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
875
876	my $permstring = shift \|\| 'i'; # default is to inhert permissions from group
877
878	my $fname = shift \|\| $username;
879	my $lname = shift \|\| '';
880	my $phone = shift \|\| ''; # not going format-check
881
882	my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
883	my $user_id;
884
885	# quick check to start to see if we've already got one
886	$sth->execute($username);
887	($user_id) = $sth->fetchrow_array;
888
889	return ('FAIL', "User already exists") if $user_id;
890
891	# Allow transactions, and raise an exception on errors so we can catch it later.
892	# Use local to make sure these get "reset" properly on exiting this block
893	local $dbh->{AutoCommit} = 0;
894	local $dbh->{RaiseError} = 1;
895
896	my $failmsg = '';
897
898	# Wrap all the SQL in a transaction
899	eval {
900	# insert the user... note we set inherited perms by default since
901	# it's simple and cleans up some other bits of state
902	my $sth = $dbh->prepare("INSERT INTO users ".
903	"(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
904	"VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
905	$sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
906
907	# get the ID...
908	($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
909
910	# Permissions! Gotta set'em all!
911	die "Invalid permission string $permstring"
912	if $permstring !~ /^(?:
913	i # inherit
914	\|c:\d+ # clone
915	# custom. no, the leading , is not a typo
916	\|C:(?:,(?:group\|user\|domain\|record\|self)_(?:edit\|create\|delete))*
917	)$/x;
918	# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
919	if ($permstring ne 'i') {
920	# for cloned or custom permissions, we have to create a new permissions entry.
921	my $clonesrc = $group;
922	if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
923	$dbh->do("INSERT INTO permissions ($permlist,user_id) ".
924	"SELECT $permlist,? FROM permissions WHERE permission_id=".
925	"(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
926	undef, ($user_id,$clonesrc) );
927	$dbh->do("UPDATE users SET permission_id=".
928	"(SELECT permission_id FROM permissions WHERE user_id=?) ".
929	"WHERE user_id=?", undef, ($user_id, $user_id) );
930	}
931	if ($permstring =~ /^C:/) {
932	# finally for custom permissions, we set the passed-in permissions (and unset
933	# any that might have been brought in by the clone operation above)
934	my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
935	undef, ($user_id) );
936	foreach (@permtypes) {
937	if ($permstring =~ /,$_/) {
938	$dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
939	} else {
940	$dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
941	}
942	}
943	}
944
945	$dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
946
947	##fixme: add another table to hold name/email for log table?
948
949	# once we get here, we should have suceeded.
950	$dbh->commit;
951	}; # end eval
952
953	if ($@) {
954	my $msg = $@;
955	eval { $dbh->rollback; };
956	return ('FAIL',$msg." $failmsg");
957	} else {
958	return ('OK',$user_id);
959	}
960	} # end addUser
961
962
963	## DNSDB::checkUser()
964	# Check user/pass combo on login
965	sub checkUser {
966	my $dbh = shift;
967	my $user = shift;
968	my $inpass = shift;
969
970	my $sth = $dbh->prepare("SELECT user_id,group_id,password,firstname,lastname FROM users WHERE username=?");
971	$sth->execute($user);
972	my ($uid,$gid,$pass,$fname,$lname) = $sth->fetchrow_array;
973	my $loginfailed = 1 if !defined($uid);
974
975	if ($pass =~ m\|^\$1\$([A-Za-z0-9/.]+)\$\|) {
976	$loginfailed = 1 if $pass ne unix_md5_crypt($inpass,$1);
977	} else {
978	$loginfailed = 1 if $pass ne $inpass;
979	}
980
981	# nnnngggg
982	return ($uid, $gid);
983	} # end checkUser
984
985
986	## DNSDB:: updateUser()
987	# Update general data about user
988	sub updateUser {
989	my $dbh = shift;
990
991	##fixme: tweak calling convention so that we can update any given bit of data
992	my $uid = shift;
993	my $username = shift;
994	my $group = shift;
995	my $pass = shift;
996	my $state = shift;
997	my $type = shift \|\| 'u';
998	my $fname = shift \|\| $username;
999	my $lname = shift \|\| '';
1000	my $phone = shift \|\| ''; # not going format-check
1001
1002	my $failmsg = '';
1003
1004	# Allow transactions, and raise an exception on errors so we can catch it later.
1005	# Use local to make sure these get "reset" properly on exiting this block
1006	local $dbh->{AutoCommit} = 0;
1007	local $dbh->{RaiseError} = 1;
1008
1009	my $sth;
1010
1011	# Password can be left blank; if so we assume there's one on file.
1012	# Actual blank passwords are bad, mm'kay?
1013	if (!$pass) {
1014	$sth = $dbh->prepare("SELECT password FROM users WHERE user_id=?");
1015	$sth->execute($uid);
1016	($pass) = $sth->fetchrow_array;
1017	} else {
1018	$pass = unix_md5_crypt($pass);
1019	}
1020
1021	eval {
1022	my $sth = $dbh->prepare(q(
1023	UPDATE users
1024	SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?
1025	WHERE user_id=?
1026	)
1027	);
1028	$sth->execute($username, $pass, $fname, $lname, $phone, $type, $state, $uid);
1029	$dbh->commit;
1030	};
1031	if ($@) {
1032	my $msg = $@;
1033	eval { $dbh->rollback; };
1034	return ('FAIL',"$failmsg: $msg");
1035	} else {
1036	return ('OK','OK');
1037	}
1038	} # end updateUser()
1039
1040
1041	## DNSDB::delUser()
1042	#
1043	sub delUser {
1044	my $dbh = shift;
1045	return ('FAIL',"Need database handle") if !$dbh;
1046	my $userid = shift;
1047	return ('FAIL',"Missing userid") if !defined($userid);
1048
1049	my $sth = $dbh->prepare("delete from users where user_id=?");
1050	$sth->execute($userid);
1051
1052	return ('FAIL',"Couldn't remove user: ".$sth->errstr) if $sth->err;
1053
1054	return ('OK','OK');
1055
1056	} # end delUser
1057
1058
1059	## DNSDB::userFullName()
1060	# Return a pretty string!
1061	# Takes a user_id and optional printf-ish string to indicate which pieces where:
1062	# %u for the username
1063	# %f for the first name
1064	# %l for the last name
1065	# All other text in the passed string will be left as-is.
1066	##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
1067	sub userFullName {
1068	$errstr = '';
1069	my $dbh = shift;
1070	my $userid = shift;
1071	my $fullformat = shift \|\| '%f %l (%u)';
1072	my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
1073	$sth->execute($userid);
1074	my ($uname,$fname,$lname) = $sth->fetchrow_array();
1075	$errstr = $DBI::errstr if !$uname;
1076
1077	$fullformat =~ s/\%u/$uname/g;
1078	$fullformat =~ s/\%f/$fname/g;
1079	$fullformat =~ s/\%l/$lname/g;
1080
1081	return $fullformat;
1082	} # end userFullName
1083
1084
1085	## DNSDB::userStatus()
1086	# Sets and/or returns a user's status
1087	# Takes a database handle, user ID and optionally a status argument
1088	# Returns undef on errors.
1089	sub userStatus {
1090	my $dbh = shift;
1091	my $id = shift;
1092	my $newstatus = shift;
1093
1094	return undef if $id !~ /^\d+$/;
1095
1096	my $sth;
1097
1098	# ooo, fun! let's see what we were passed for status
1099	if ($newstatus) {
1100	$sth = $dbh->prepare("update users set status=? where user_id=?");
1101	# ass-u-me caller knows what's going on in full
1102	if ($newstatus =~ /^[01]$/) { # only two valid for now.
1103	$sth->execute($newstatus,$id);
1104	} elsif ($newstatus =~ /^usero(?:n\|ff)$/) {
1105	$sth->execute(($newstatus eq 'useron' ? 1 : 0),$id);
1106	}
1107	}
1108
1109	$sth = $dbh->prepare("select status from users where user_id=?");
1110	$sth->execute($id);
1111	my ($status) = $sth->fetchrow_array;
1112	return $status;
1113	} # end userStatus()
1114
1115
1116	## DNSDB::getUserData()
1117	# Get misc user data for display
1118	sub getUserData {
1119	my $dbh = shift;
1120	my $uid = shift;
1121
1122	my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
1123	"FROM users WHERE user_id=?");
1124	$sth->execute($uid);
1125	return $sth->fetchrow_hashref();
1126
1127	} # end getUserData()
1128
1129
1130	## DNSDB::getSOA()
1131	# Return all suitable fields from an SOA record in separate elements of a hash
1132	# Takes a database handle, default/live flag, and group (default) or domain (live) ID
1133	sub getSOA {
1134	$errstr = '';
1135	my $dbh = shift;
1136	my $def = shift;
1137	my $id = shift;
1138	my %ret;
1139
1140	# (ab)use distance and weight columns to store SOA data
1141
1142	my $sql = "SELECT record_id,host,val,ttl,distance from";
1143	if ($def eq 'def' or $def eq 'y') {
1144	$sql .= " default_records WHERE group_id=? AND type=$reverse_typemap{SOA}";
1145	} else {
1146	# we're editing a live SOA record; find based on domain
1147	$sql .= " records WHERE domain_id=? AND type=$reverse_typemap{SOA}";
1148	}
1149	my $sth = $dbh->prepare($sql);
1150	$sth->execute($id);
1151
1152	my ($recid,$host,$val,$ttl,$serial) = $sth->fetchrow_array() or return;
1153	my ($prins,$contact) = split /:/, $host;
1154	my ($refresh,$retry,$expire,$minttl) = split /:/, $val;
1155
1156	$ret{recid} = $recid;
1157	$ret{ttl} = $ttl;
1158	$ret{serial} = $serial;
1159	$ret{prins} = $prins;
1160	$ret{contact} = $contact;
1161	$ret{refresh} = $refresh;
1162	$ret{retry} = $retry;
1163	$ret{expire} = $expire;
1164	$ret{minttl} = $minttl;
1165
1166	return %ret;
1167	} # end getSOA()
1168
1169
1170	## DNSDB::getRecLine()
1171	# Return all data fields for a zone record in separate elements of a hash
1172	# Takes a database handle, default/live flag, and record ID
1173	sub getRecLine {
1174	$errstr = '';
1175	my $dbh = shift;
1176	my $def = shift;
1177	my $id = shift;
1178
1179	my $sql = "SELECT record_id,host,type,val,distance,weight,port,ttl".
1180	(($def eq 'def' or $def eq 'y') ? ',group_id FROM default_' : ',domain_id FROM ').
1181	"records WHERE record_id=?";
1182	my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
1183
1184	if ($dbh->err) {
1185	$errstr = $DBI::errstr;
1186	return undef;
1187	}
1188
1189	if (!$ret) {
1190	$errstr = "No such record";
1191	return undef;
1192	}
1193
1194	$ret->{parid} = (($def eq 'def' or $def eq 'y') ? $ret->{group_id} : $ret->{domain_id});
1195
1196	return $ret;
1197	}
1198
1199
1200	##fixme: should use above (getRecLine()) to get lines for below?
1201	## DNSDB::getDomRecs()
1202	# Return records for a domain
1203	# Takes a database handle, default/live flag, group/domain ID, start,
1204	# number of records, sort field, and sort order
1205	# Returns a reference to an array of hashes
1206	sub getDomRecs {
1207	$errstr = '';
1208	my $dbh = shift;
1209	my $type = shift;
1210	my $id = shift;
1211	my $nrecs = shift \|\| 'all';
1212	my $nstart = shift \|\| 0;
1213
1214	## for order, need to map input to column names
1215	my $order = shift \|\| 'host';
1216	my $direction = shift \|\| 'ASC';
1217
1218	my $filter = shift \|\| '';
1219
1220	$type = 'y' if $type eq 'def';
1221
1222	my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl FROM ";
1223	$sql .= "default_" if $type eq 'y';
1224	$sql .= "records r ";
1225	$sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
1226	if ($type eq 'y') {
1227	$sql .= "WHERE r.group_id=?";
1228	} else {
1229	$sql .= "WHERE r.domain_id=?";
1230	}
1231	$sql .= " AND NOT r.type=$reverse_typemap{SOA}";
1232	$sql .= " AND host ~* ?" if $filter;
1233	# use alphaorder column for "correct" ordering of sort-by-type instead of DNS RR type number
1234	$sql .= " ORDER BY ".($order eq 'type' ? 't.alphaorder' : "r.$order")." $direction";
1235	$sql .= " LIMIT $nrecs OFFSET ".($nstart*$nrecs) if $nstart ne 'all';
1236
1237	my $sth = $dbh->prepare($sql) or warn $dbh->errstr;
1238	$sth->execute($id) or warn "$sql: ".$sth->errstr;
1239
1240	my @retbase;
1241	while (my $ref = $sth->fetchrow_hashref()) {
1242	push @retbase, $ref;
1243	}
1244
1245	my $ret = \@retbase;
1246	return $ret;
1247	} # end getDomRecs()
1248
1249
1250	## DNSDB::getRecCount()
1251	# Return count of non-SOA records in domain (or default records in a group)
1252	# Takes a database handle, default/live flag, group/domain ID, and optional filtering modifier
1253	# Returns the count
1254	sub getRecCount {
1255	my $dbh = shift;
1256	my $defrec = shift;
1257	my $id = shift;
1258	my $filter = shift \|\| '';
1259
1260	# keep the nasties down, since we can't ?-sub this bit. :/
1261	# note this is chars allowed in DNS hostnames
1262	$filter =~ s/[^a-zA-Z0-9_.:-]//g;
1263
1264	my ($count) = $dbh->selectrow_array("SELECT count(*) FROM ".
1265	($defrec eq 'y' ? 'default_' : '')."records ".
1266	"WHERE ".($defrec eq 'y' ? 'group' : 'domain')."_id=? ".
1267	"AND NOT type=$reverse_typemap{SOA}".
1268	($filter ? " AND host ILIKE '%$filter%'" : ''),
1269	undef, ($id) );
1270
1271	return $count;
1272
1273	} # end getRecCount()
1274
1275
1276	## DNSDB::addRec()
1277	# Add a new record to a domain or a group's default records
1278	# Takes a database handle, default/live flag, group/domain ID,
1279	# host, type, value, and TTL
1280	# Some types require additional detail: "distance" for MX and SRV,
1281	# and weight/port for SRV
1282	# Returns a status code and detail message in case of error
1283	sub addRec {
1284	$errstr = '';
1285	my $dbh = shift;
1286	my $defrec = shift;
1287	my $id = shift;
1288
1289	my $host = shift;
1290	my $rectype = shift;
1291	my $val = shift;
1292	my $ttl = shift;
1293
1294	# Validation
1295	if ($rectype == $reverse_typemap{A}) {
1296	return ("FAIL", "IPv4 addresses must be in the format n.n.n.n")
1297	unless $val =~ /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/;
1298	}
1299	if ($rectype == $reverse_typemap{AAAA}) {
1300	return ("FAIL", "IPv6 addresses must be in the format h:h:h::h")
1301	unless $val =~ /^[a-fA-F0-9:]+$/
1302	}
1303	if ($rectype == $reverse_typemap{A} or $rectype == $reverse_typemap{AAAA}) {
1304	my $tmpip = new NetAddr::IP $val or
1305	return ("FAIL", "Address must be a valid IP address");
1306	}
1307
1308	my $fields = ($defrec eq 'y' ? 'group_id' : 'domain_id').",host,type,val,ttl";
1309	my $vallen = "?,?,?,?,?";
1310	my @vallist = ($id,$host,$rectype,$val,$ttl);
1311
1312	my $dist;
1313	if ($rectype == $reverse_typemap{MX} or $rectype == $reverse_typemap{SRV}) {
1314	$dist = shift;
1315	return ('FAIL',"Need distance for $typemap{$rectype} record") if !defined($dist);
1316	$fields .= ",distance";
1317	$vallen .= ",?";
1318	push @vallist, $dist;
1319	}
1320	my $weight;
1321	my $port;
1322	if ($rectype == $reverse_typemap{SRV}) {
1323	# check for _service._protocol. NB: RFC2782 does not say "MUST"... nor "SHOULD"...
1324	# it just says (paraphrased) "... is prepended with _ to prevent DNS collisions"
1325	return ('FAIL',"SRV records must begin with _service._protocol")
1326	if $host !~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-z0-9-]+/;
1327	$weight = shift;
1328	$port = shift;
1329	return ('FAIL',"Need weight and port for SRV record") if !defined($weight) or !defined($port);
1330	$fields .= ",weight,port";
1331	$vallen .= ",?,?";
1332	push @vallist, ($weight,$port);
1333	}
1334
1335	# Allow transactions, and raise an exception on errors so we can catch it later.
1336	# Use local to make sure these get "reset" properly on exiting this block
1337	local $dbh->{AutoCommit} = 0;
1338	local $dbh->{RaiseError} = 1;
1339
1340	eval {
1341	$dbh->do("INSERT INTO ".($defrec eq 'y' ? 'default_' : '')."records ($fields) VALUES ($vallen)",
1342	undef, @vallist);
1343	$dbh->commit;
1344	};
1345	if ($@) {
1346	my $msg = $@;
1347	eval { $dbh->rollback; };
1348	return ('FAIL',$msg);
1349	}
1350
1351	return ('OK','OK');
1352
1353	} # end addRec()
1354
1355
1356	## DNSDB::updateRec()
1357	# Update a record
1358	sub updateRec {
1359	$errstr = '';
1360
1361	my $dbh = shift;
1362	my $defrec = shift;
1363	my $id = shift;
1364
1365	# all records have these
1366	my $host = shift;
1367	my $type = shift;
1368	my $val = shift;
1369	my $ttl = shift;
1370
1371	return('FAIL',"Missing standard argument(s)") if !defined($ttl);
1372
1373	# only MX and SRV will use these
1374	my $dist = 0;
1375	my $weight = 0;
1376	my $port = 0;
1377
1378	if ($type == $reverse_typemap{MX} \|\| $type == $reverse_typemap{SRV}) {
1379	$dist = shift;
1380	return ('FAIL',"MX or SRV requires distance") if !defined($dist);
1381	if ($type == $reverse_typemap{SRV}) {
1382	$weight = shift;
1383	return ('FAIL',"SRV requires weight") if !defined($weight);
1384	$port = shift;
1385	return ('FAIL',"SRV requires port") if !defined($port);
1386	}
1387	}
1388
1389	local $dbh->{AutoCommit} = 0;
1390	local $dbh->{RaiseError} = 1;
1391
1392	eval {
1393	$dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records ".
1394	"SET host=?,val=?,type=?,ttl=?,distance=?,weight=?,port=? ".
1395	"WHERE record_id=?", undef, ($host, $val, $type, $ttl, $dist, $weight, $port, $id) );
1396	$dbh->commit;
1397	};
1398	if ($@) {
1399	my $msg = $@;
1400	$dbh->rollback;
1401	return ('FAIL', $msg);
1402	}
1403
1404	return ('OK','OK');
1405	} # end updateRec()
1406
1407
1408	## DNSDB::delRec()
1409	# Delete a record.
1410	sub delRec {
1411	$errstr = '';
1412	my $dbh = shift;
1413	my $defrec = shift;
1414	my $id = shift;
1415
1416	my $sth = $dbh->prepare("DELETE FROM ".($defrec eq 'y' ? 'default_' : '')."records WHERE record_id=?");
1417	$sth->execute($id);
1418
1419	return ('FAIL',"Couldn't remove record: ".$sth->errstr) if $sth->err;
1420
1421	return ('OK','OK');
1422	} # end delRec()
1423
1424
1425	# Reference hashes.
1426	my %par_tbl = (
1427	group => 'groups',
1428	user => 'users',
1429	defrec => 'default_records',
1430	domain => 'domains',
1431	record => 'records'
1432	);
1433	my %id_col = (
1434	group => 'group_id',
1435	user => 'user_id',
1436	defrec => 'record_id',
1437	domain => 'domain_id',
1438	record => 'record_id'
1439	);
1440	my %par_col = (
1441	group => 'parent_group_id',
1442	user => 'group_id',
1443	defrec => 'group_id',
1444	domain => 'group_id',
1445	record => 'domain_id'
1446	);
1447	my %par_type = (
1448	group => 'group',
1449	user => 'group',
1450	defrec => 'group',
1451	domain => 'group',
1452	record => 'domain'
1453	);
1454
1455	## DNSDB::getParents()
1456	# Find out which entities are parent to the requested id
1457	# Returns arrayref containing hash pairs of id/type
1458	sub getParents {
1459	my $dbh = shift;
1460	my $id = shift;
1461	my $type = shift;
1462	my $depth = shift \|\| 'all'; # valid values: 'all', 'immed', <int> (stop at this group ID)
1463
1464	my @parlist;
1465
1466	while (1) {
1467	my $result = $dbh->selectrow_hashref("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?",
1468	undef, ($id) );
1469	my %tmp = ($result->{$par_col{$type}} => $par_type{$type});
1470	unshift @parlist, \%tmp;
1471	last if $result->{$par_col{$type}} == 1; # group 1 is its own parent
1472	$id = $result->{$par_col{$type}};
1473	$type = $par_type{$type};
1474	}
1475
1476	return \@parlist;
1477
1478	} # end getParents()
1479
1480
1481	## DNSDB::isParent()
1482	# Returns true if $id1 is a parent of $id2, false otherwise
1483	sub isParent {
1484	my $dbh = shift;
1485	my $id1 = shift;
1486	my $type1 = shift;
1487	my $id2 = shift;
1488	my $type2 = shift;
1489	##todo: immediate, secondary, full (default)
1490
1491	# Return false on invalid types
1492	return 0 if !grep /^$type1$/, ('record','defrec','user','domain','group');
1493	return 0 if !grep /^$type2$/, ('record','defrec','user','domain','group');
1494
1495	# Return false on impossible relations
1496	return 0 if $type1 eq 'record'; # nothing may be a child of a record
1497	return 0 if $type1 eq 'defrec'; # nothing may be a child of a record
1498	return 0 if $type1 eq 'user'; # nothing may be child of a user
1499	return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record
1500
1501	# group 1 is the ultimate root parent
1502	return 1 if $type1 eq 'group' && $id1 == 1;
1503
1504	# groups are always (a) parent of themselves
1505	return 1 if $type1 eq 'group' && $type2 eq 'group' && $id1 == $id2;
1506
1507	# almost the same loop as getParents() above
1508	my $id = $id2;
1509	my $type = $type2;
1510	my $foundparent = 0;
1511
1512	while (1) {
1513	my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?";
1514	my $result = $dbh->selectrow_hashref($sql,
1515	undef, ($id) );
1516	if ($result && $result->{$par_col{$type}} == $id1) {
1517	$foundparent = 1;
1518	last;
1519	} else {
1520	##fixme: do we care about trying to return a "no such record/domain/user/group" error?
1521	warn $dbh->errstr." $sql, $id" if $dbh->errstr;
1522	}
1523	# group 1 is its own parent. need this here more to break strange loops than for detecting a parent
1524	last if $result->{$par_col{$type}} == 1;
1525	$id = $result->{$par_col{$type}};
1526	$type = $par_type{$type};
1527	}
1528
1529	return $foundparent;
1530	} # end isParent()
1531
1532
1533	## DNSDB::domStatus()
1534	# Sets and/or returns a domain's status
1535	# Takes a database handle, domain ID and optionally a status argument
1536	# Returns undef on errors.
1537	sub domStatus {
1538	my $dbh = shift;
1539	my $id = shift;
1540	my $newstatus = shift;
1541
1542	return undef if $id !~ /^\d+$/;
1543
1544	my $sth;
1545
1546	# ooo, fun! let's see what we were passed for status
1547	if ($newstatus) {
1548	$sth = $dbh->prepare("update domains set status=? where domain_id=?");
1549	# ass-u-me caller knows what's going on in full
1550	if ($newstatus =~ /^[01]$/) { # only two valid for now.
1551	$sth->execute($newstatus,$id);
1552	} elsif ($newstatus =~ /^domo(?:n\|ff)$/) {
1553	$sth->execute(($newstatus eq 'domon' ? 1 : 0),$id);
1554	}
1555	}
1556
1557	$sth = $dbh->prepare("select status from domains where domain_id=?");
1558	$sth->execute($id);
1559	my ($status) = $sth->fetchrow_array;
1560	return $status;
1561	} # end domStatus()
1562
1563
1564	## DNSDB::importAXFR
1565	# Import a domain via AXFR
1566	# Takes AXFR host, domain to transfer, group to put the domain in,
1567	# and optionally:
1568	# - active/inactive state flag (defaults to active)
1569	# - overwrite-SOA flag (defaults to off)
1570	# - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
1571	# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
1572	# if status is OK, but WARN includes conditions that are not fatal but should
1573	# really be reported.
1574	sub importAXFR {
1575	my $dbh = shift;
1576	my $ifrom_in = shift;
1577	my $domain = shift;
1578	my $group = shift;
1579	my $status = shift \|\| 1;
1580	my $rwsoa = shift \|\| 0;
1581	my $rwns = shift \|\| 0;
1582
1583	##fixme: add mode to delete&replace, merge+overwrite, merge new?
1584
1585	my $nrecs = 0;
1586	my $soaflag = 0;
1587	my $nsflag = 0;
1588	my $warnmsg = '';
1589	my $ifrom;
1590
1591	# choke on possible bad setting in ifrom
1592	# IPv4 and v6, and valid hostnames!
1593	($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
1594	return ('FAIL', "Bad AXFR source host $ifrom")
1595	unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
1596
1597	# Allow transactions, and raise an exception on errors so we can catch it later.
1598	# Use local to make sure these get "reset" properly on exiting this block
1599	local $dbh->{AutoCommit} = 0;
1600	local $dbh->{RaiseError} = 1;
1601
1602	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
1603	my $dom_id;
1604
1605	# quick check to start to see if we've already got one
1606	$sth->execute($domain);
1607	($dom_id) = $sth->fetchrow_array;
1608
1609	return ('FAIL', "Domain already exists") if $dom_id;
1610
1611	eval {
1612	# can't do this, can't nest transactions. sigh.
1613	#my ($dcode, $dmsg) = addDomain(dbh, domain, group, status);
1614
1615	##fixme: serial
1616	my $sth = $dbh->prepare("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)");
1617	$sth->execute($domain,$group,$status);
1618
1619	## bizarre DBI<->Net::DNS interaction bug:
1620	## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
1621	## fixed, apparently I was doing something odd, but not certain what it was that
1622	## caused a commit instead of barfing
1623
1624	# get domain id so we can do the records
1625	$sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
1626	$sth->execute($domain);
1627	($dom_id) = $sth->fetchrow_array();
1628
1629	my $res = Net::DNS::Resolver->new;
1630	$res->nameservers($ifrom);
1631	$res->axfr_start($domain)
1632	or die "Couldn't begin AXFR\n";
1633
1634	while (my $rr = $res->axfr_next()) {
1635	my $type = $rr->type;
1636
1637	my $sql = "INSERT INTO records (domain_id,host,type,ttl,val";
1638	my $vallen = "?,?,?,?,?";
1639
1640	$soaflag = 1 if $type eq 'SOA';
1641	$nsflag = 1 if $type eq 'NS';
1642
1643	my @vallist = ($dom_id, $rr->name, $reverse_typemap{$type}, $rr->ttl);
1644
1645	# "Primary" types:
1646	# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
1647	# maybe KEY
1648
1649	# nasty big ugly case-like thing here, since we have to do some different
1650	# processing depending on the record. le sigh.
1651
1652	##fixme: what record types other than TXT can/will have >255-byte payloads?
1653
1654	if ($type eq 'A') {
1655	push @vallist, $rr->address;
1656	} elsif ($type eq 'NS') {
1657	# hmm. should we warn here if subdomain NS'es are left alone?
1658	next if ($rwns && ($rr->name eq $domain));
1659	push @vallist, $rr->nsdname;
1660	$nsflag = 1;
1661	} elsif ($type eq 'CNAME') {
1662	push @vallist, $rr->cname;
1663	} elsif ($type eq 'SOA') {
1664	next if $rwsoa;
1665	$vallist[1] = $rr->mname.":".$rr->rname;
1666	push @vallist, ($rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum);
1667	$soaflag = 1;
1668	} elsif ($type eq 'PTR') {
1669	push @vallist, $rr->ptrdname;
1670	# hmm. PTR records should not be in forward zones.
1671	} elsif ($type eq 'MX') {
1672	$sql .= ",distance";
1673	$vallen .= ",?";
1674	push @vallist, $rr->exchange;
1675	push @vallist, $rr->preference;
1676	} elsif ($type eq 'TXT') {
1677	##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
1678	## but don't really seem enthusiastic about it.
1679	my $rrdata = $rr->txtdata;
1680	push @vallist, $rrdata;
1681	} elsif ($type eq 'SPF') {
1682	##fixme: and the same caveat here, since it is apparently a clone of ::TXT
1683	my $rrdata = $rr->txtdata;
1684	push @vallist, $rrdata;
1685	} elsif ($type eq 'AAAA') {
1686	push @vallist, $rr->address;
1687	} elsif ($type eq 'SRV') {
1688	$sql .= ",distance,weight,port" if $type eq 'SRV';
1689	$vallen .= ",?,?,?" if $type eq 'SRV';
1690	push @vallist, $rr->target;
1691	push @vallist, $rr->priority;
1692	push @vallist, $rr->weight;
1693	push @vallist, $rr->port;
1694	} elsif ($type eq 'KEY') {
1695	# we don't actually know what to do with these...
1696	push @vallist, ($rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname);
1697	} else {
1698	my $rrdata = $rr->rdatastr;
1699	push @vallist, $rrdata;
1700	# Finding a different record type is not fatal.... just problematic.
1701	# We may not be able to export it correctly.
1702	$warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
1703	}
1704
1705	# BIND supports:
1706	# A CNAME HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) MX NS NULL
1707	# PTR SOA TXT WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX
1708	# ... if one can ever find the right magic to format them correctly
1709
1710	# Net::DNS supports:
1711	# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
1712	# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
1713	# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
1714
1715	$sth = $dbh->prepare($sql.") VALUES (".$vallen.")") or die "problem preparing record insert SQL\n";
1716	$sth->execute(@vallist) or die "failed to insert ".$rr->string.": ".$sth->errstr."\n";
1717
1718	$nrecs++;
1719
1720	} # while axfr_next
1721
1722	# Overwrite SOA record
1723	if ($rwsoa) {
1724	$soaflag = 1;
1725	my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
1726	my $sthputsoa = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
1727	$sthgetsoa->execute($group,$reverse_typemap{SOA});
1728	while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
1729	$host =~ s/DOMAIN/$domain/g;
1730	$val =~ s/DOMAIN/$domain/g;
1731	$sthputsoa->execute($dom_id,$host,$reverse_typemap{SOA},$val,$ttl);
1732	}
1733	}
1734
1735	# Overwrite NS records
1736	if ($rwns) {
1737	$nsflag = 1;
1738	my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
1739	my $sthputns = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
1740	$sthgetns->execute($group,$reverse_typemap{NS});
1741	while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
1742	$host =~ s/DOMAIN/$domain/g;
1743	$val =~ s/DOMAIN/$domain/g;
1744	$sthputns->execute($dom_id,$host,$reverse_typemap{NS},$val,$ttl);
1745	}
1746	}
1747
1748	die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
1749	die "Bad zone: No SOA record!\n" if !$soaflag;
1750	die "Bad zone: No NS records!\n" if !$nsflag;
1751
1752	$dbh->commit;
1753
1754	};
1755
1756	if ($@) {
1757	my $msg = $@;
1758	eval { $dbh->rollback; };
1759	return ('FAIL',$msg." $warnmsg");
1760	} else {
1761	return ('WARN', $warnmsg) if $warnmsg;
1762	return ('OK',"Imported OK");
1763	}
1764
1765	# it should be impossible to get here.
1766	return ('WARN',"OOOK!");
1767	} # end importAXFR()
1768
1769
1770	## DNSDB::export()
1771	# Export the DNS database, or a part of it
1772	# Takes database handle, export type, optional arguments depending on type
1773	# Writes zone data to targets as appropriate for type
1774	sub export {
1775	my $dbh = shift;
1776	my $target = shift;
1777
1778	if ($target eq 'tiny') {
1779	__export_tiny($dbh,@_);
1780	}
1781	# elsif ($target eq 'foo') {
1782	# __export_foo($dbh,@_);
1783	#}
1784	# etc
1785
1786	} # end export()
1787
1788
1789	## DNSDB::__export_tiny
1790	# Internal sub to implement tinyDNS (compatible) export
1791	# Takes database handle, filehandle to write export to, optional argument(s)
1792	# to determine which data gets exported
1793	sub __export_tiny {
1794	my $dbh = shift;
1795	my $datafile = shift;
1796
1797	##fixme: slurp up further options to specify particular zone(s) to export
1798
1799	## Convert a bare number into an octal-coded pair of octets.
1800	# Take optional arg to indicate a decimal or hex input. Defaults to hex.
1801	sub octalize {
1802	my $tmp = shift;
1803	my $srctype = shift \|\| 'h'; # default assumes hex string
1804	$tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
1805	$tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
1806	my @o = ($tmp =~ /^(..)(..)$/); # split into octets
1807	return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
1808	}
1809
1810	##fixme: fail if $datafile isn't an open, writable file
1811
1812	# easy case - export all evarything
1813	# not-so-easy case - export item(s) specified
1814	# todo: figure out what kind of list we use to export items
1815
1816	my $domsth = $dbh->prepare("SELECT domain_id,domain,status FROM domains WHERE status=1");
1817	my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl ".
1818	"FROM records WHERE domain_id=?");
1819	$domsth->execute();
1820	while (my ($domid,$dom,$domstat) = $domsth->fetchrow_array) {
1821	$recsth->execute($domid);
1822	while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $recsth->fetchrow_array) {
1823	##fixme: need to store location in the db, and retrieve it here.
1824	# temporarily hardcoded to empty so we can include it further down.
1825	my $loc = '';
1826
1827	##fixme: record validity timestamp. tinydns supports fiddling with timestamps.
1828	# note $ttl must be set to 0 if we want to use tinydns's auto-expiring timestamps.
1829	# timestamps are TAI64
1830	# ~~ 2^62 + time()
1831	my $stamp = '';
1832
1833	# raw packet in unknown format: first byte indicates length
1834	# of remaining data, allows up to 255 raw bytes
1835
1836	##fixme? append . to all host/val hostnames
1837	if ($typemap{$type} eq 'SOA') {
1838
1839	# host contains pri-ns:responsible
1840	# val is abused to contain refresh:retry:expire:minttl
1841	##fixme: "manual" serial vs tinydns-autoserial
1842	print $datafile "Z$host"."::$val:$ttl:$stamp:$loc\n";
1843
1844	} elsif ($typemap{$type} eq 'A') {
1845
1846	print $datafile "+$host:$val:$ttl:$stamp:$loc\n";
1847
1848	} elsif ($typemap{$type} eq 'NS') {
1849
1850	print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n";
1851
1852	} elsif ($typemap{$type} eq 'AAAA') {
1853
1854	print $datafile ":$host:28:";
1855	my $altgrp = 0;
1856	my @altconv;
1857	# Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing)
1858	foreach (split /:/, $val) {
1859	if (/^$/) {
1860	# flag blank entry; this is a series of 0's of (currently) unknown length
1861	$altconv[$altgrp++] = 's';
1862	} else {
1863	# call sub to convert 1-4 hex digits to 2 string-rep octal bytes
1864	$altconv[$altgrp++] = octalize($_)
1865	}
1866	}
1867	foreach my $octet (@altconv) {
1868	# if not 's', output
1869	print $datafile $octet unless $octet =~ /^s$/;
1870	# if 's', output (9-array length)x literal '\000\000'
1871	print $datafile '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
1872	}
1873	print $datafile ":$ttl:$stamp:$loc\n";
1874
1875	} elsif ($typemap{$type} eq 'MX') {
1876
1877	print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n";
1878
1879	} elsif ($typemap{$type} eq 'TXT') {
1880
1881	##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
1882	$val =~ s/:/\\072/g; # may need to replace other symbols
1883	print $datafile "'$host:$val:$ttl:$stamp:$loc\n";
1884
1885	# by-hand TXT
1886	#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
1887	#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
1888	#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
1889
1890	#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
1891	#:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600
1892
1893	# very long TXT record as brought in by axfr-get
1894	# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
1895	# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
1896	#:longtxt.deepnet.cx:16:
1897	#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
1898	#\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
1899	#\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long.
1900	#:3600
1901
1902	} elsif ($typemap{$type} eq 'CNAME') {
1903
1904	print $datafile "C$host:$val:$ttl:$stamp:$loc\n";
1905
1906	} elsif ($typemap{$type} eq 'SRV') {
1907
1908	# data is two-byte values for priority, weight, port, in that order,
1909	# followed by length/string data
1910
1911	print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d');
1912
1913	$val .= '.' if $val !~ /\.$/;
1914	foreach (split /\./, $val) {
1915	printf $datafile "\\%0.3o%s", length($_), $_;
1916	}
1917	print $datafile "\\000:$ttl:$stamp:$loc\n";
1918
1919	} elsif ($typemap{$type} eq 'RP') {
1920
1921	# RP consists of two mostly free-form strings.
1922	# The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
1923	# The second is the "hostname" of a TXT record with more info.
1924	print $datafile ":$host:17:";
1925	my ($who,$what) = split /\s/, $val;
1926	foreach (split /\./, $who) {
1927	printf $datafile "\\%0.3o%s", length($_), $_;
1928	}
1929	print $datafile '\000';
1930	foreach (split /\./, $what) {
1931	printf $datafile "\\%0.3o%s", length($_), $_;
1932	}
1933	print $datafile "\\000:$ttl:$stamp:$loc\n";
1934
1935	} elsif ($typemap{$type} eq 'PTR') {
1936
1937	# must handle both IPv4 and IPv6
1938	##work
1939	# data should already be in suitable reverse order.
1940	print $datafile "^$host:$val:$ttl:$stamp:$loc\n";
1941
1942	} else {
1943	# raw record. we don't know what's in here, so we ASS-U-ME the user has
1944	# put it in correctly, since either the user is messing directly with the
1945	# database, or the record was imported via AXFR
1946	# <split by char>
1947	# convert anything not a-zA-Z0-9.- to octal coding
1948
1949	##fixme: add flag to export "unknown" record types - note we'll probably end up
1950	# mangling them since they were written to the DB from Net::DNS::RR::<type>->rdatastr.
1951	#print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n";
1952
1953	} # record type if-else
1954
1955	} # while ($recsth)
1956	} # while ($domsth)
1957	} # end __export_tiny()
1958
1959
1960	# shut Perl up
1961	1;

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