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source: trunk/DNSDB.pm@ 107

Last change on this file since 107 was 107, checked in by Kris Deugau, 13 years ago

/trunk

Fix mishandling of record data retrieved before deleting said record.
Tweak logging on record deletion - probably failing due to

mishandling the retrieval.

Property svn:keywords set to Date Rev Author Id

File size: 54.1 KB

Rev	Line
[2]	1	# dns/trunk/DNSDB.pm
	2	# Abstraction functions for DNS administration
	3	###
	4	# SVN revision info
	5	# $Date: 2011-07-19 20:50:08 +0000 (Tue, 19 Jul 2011) $
	6	# SVN revision $Rev: 107 $
	7	# Last update by $Author: kdeugau $
	8	###
	9	# Copyright (C) 2008 - Kris Deugau <kdeugau@deepnet.cx>
	10
	11	package DNSDB;
	12
	13	use strict;
	14	use warnings;
	15	use Exporter;
	16	use DBI;
[33]	17	use Net::DNS;
[65]	18	use Crypt::PasswdMD5;
[2]	19	#use Net::SMTP;
	20	#use NetAddr::IP qw( Compact );
	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(
[67]	27	&initGlobals
	28	&initPermissions &getPermissions &changePermissions &comparePermissions
[65]	29	&connectDB &finish
[91]	30	&addDomain &delDomain &domainName &domainID
[22]	31	&addGroup &delGroup &getChildren &groupName
[83]	32	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
[91]	33	&getSOA &getRecLine &getDomRecs &getRecCount
[22]	34	&addRec &updateRec &delRec
[34]	35	&domStatus &importAXFR
[103]	36	&export
[2]	37	%typemap %reverse_typemap
[66]	38	%permissions @permtypes $permlist
[2]	39	);
	40
	41	@EXPORT = (); # Export nothing by default.
	42	%EXPORT_TAGS = ( ALL => [qw(
[67]	43	&initGlobals
	44	&initPermissions &getPermissions &changePermissions &comparePermissions
[65]	45	&connectDB &finish
[91]	46	&addDomain &delDomain &domainName &domainID
[22]	47	&addGroup &delGroup &getChildren &groupName
[83]	48	&addUser &updateUser &delUser &userFullName &userStatus &getUserData
[91]	49	&getSOA &getRecLine &getDomRecs &getRecCount
[22]	50	&addRec &updateRec &delRec
[34]	51	&domStatus &importAXFR
[103]	52	&export
[2]	53	%typemap %reverse_typemap
[66]	54	%permissions @permtypes $permlist
[2]	55	)]
	56	);
	57
	58	our $group = 1;
	59	our $errstr = '';
	60
	61	# Halfway sane defaults for SOA, TTL, etc.
[101]	62	# serial defaults to 0 for convenience.
	63	# value will be either YYYYMMDDNN for BIND/etc, or auto-internal for tinydns
[2]	64	our %def = qw (
	65	contact hostmaster.DOMAIN
	66	prins ns1.myserver.com
[101]	67	serial 0
[2]	68	soattl 86400
	69	refresh 10800
	70	retry 3600
	71	expire 604800
	72	minttl 10800
	73	ttl 10800
	74	);
	75
[66]	76	# Arguably defined wholly in the db, but little reason to change without supporting code changes
	77	our @permtypes = qw (
	78	group_edit group_create group_delete
	79	user_edit user_create user_delete
	80	domain_edit domain_create domain_delete
	81	record_edit record_create record_delete
	82	self_edit admin
	83	);
	84	our $permlist = join(',',@permtypes);
	85
[2]	86	# DNS record type map and reverse map.
	87	# loaded from the database, from http://www.iana.org/assignments/dns-parameters
	88	our %typemap;
	89	our %reverse_typemap;
	90
[65]	91	our %permissions;
[55]	92
[2]	93	##
	94	## Initialization and cleanup subs
	95	##
	96
[55]	97
[2]	98	## DNSDB::connectDB()
	99	# Creates connection to DNS database.
	100	# Requires the database name, username, and password.
	101	# Returns a handle to the db.
	102	# Set up for a PostgreSQL db; could be any transactional DBMS with the
	103	# right changes.
	104	sub connectDB {
	105	$errstr = '';
[15]	106	my $dbname = shift;
	107	my $user = shift;
	108	my $pass = shift;
[2]	109	my $dbh;
	110	my $DSN = "DBI:Pg:dbname=$dbname";
	111
	112	my $host = shift;
	113	$DSN .= ";host=$host" if $host;
	114
	115	# Note that we want to autocommit by default, and we will turn it off locally as necessary.
	116	# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
	117	$dbh = DBI->connect($DSN, $user, $pass, {
	118	AutoCommit => 1,
	119	PrintError => 0
	120	})
	121	or return (undef, $DBI::errstr) if(!$dbh);
	122
	123	# Return here if we can't select. Note that this indicates a
	124	# problem executing the select.
	125	my $sth = $dbh->prepare("select group_id from groups limit 1");
	126	$sth->execute();
	127	return (undef,$DBI::errstr) if ($sth->err);
	128
	129	# See if the select returned anything (or null data). This should
	130	# succeed if the select executed, but...
	131	$sth->fetchrow();
	132	return (undef,$DBI::errstr) if ($sth->err);
	133
	134	$sth->finish;
	135
	136	# If we get here, we should be OK.
	137	return ($dbh,"DB connection OK");
	138	} # end connectDB
	139
	140
	141	## DNSDB::finish()
	142	# Cleans up after database handles and so on.
	143	# Requires a database handle
	144	sub finish {
	145	my $dbh = $_[0];
	146	$dbh->disconnect;
	147	} # end finish
	148
	149
	150	## DNSDB::initGlobals()
	151	# Initialize global variables
	152	# NB: this does NOT include web-specific session variables!
	153	# Requires a database handle
	154	sub initGlobals {
	155	my $dbh = shift;
	156
	157	# load system-wide site defaults and things from config file
[29]	158	if (open SYSDEFAULTS, "</etc/dnsdb.conf") {
[2]	159	##fixme - error check!
[29]	160	while (<SYSDEFAULTS>) {
	161	next if /^\s*#/;
	162	$def{contact} = $1 if /contact ?= ?([a-z0-9_.-]+)/i;
	163	$def{prins} = $1 if /prins ?= ?([a-z0-9_.-]+)/i;
	164	$def{soattl} = $1 if /soattl ?= ?([a-z0-9_.-]+)/i;
	165	$def{refresh} = $1 if /refresh ?= ?([a-z0-9_.-]+)/i;
	166	$def{retry} = $1 if /retry ?= ?([a-z0-9_.-]+)/i;
	167	$def{expire} = $1 if /expire ?= ?([a-z0-9_.-]+)/i;
	168	$def{minttl} = $1 if /minttl ?= ?([a-z0-9_.-]+)/i;
	169	$def{ttl} = $1 if /ttl ?= ?([a-z0-9_.-]+)/i;
[2]	170	##fixme? load DB user/pass from config file?
[29]	171	}
[2]	172	}
	173	# load from database
	174	my $sth = $dbh->prepare("select val,name from rectypes");
	175	$sth->execute;
	176	while (my ($recval,$recname) = $sth->fetchrow_array()) {
	177	$typemap{$recval} = $recname;
	178	$reverse_typemap{$recname} = $recval;
	179	}
	180	} # end initGlobals
	181
	182
[65]	183	## DNSDB::initPermissions()
	184	# Set up permissions global
	185	# Takes database handle and UID
	186	sub initPermissions {
	187	my $dbh = shift;
	188	my $uid = shift;
	189
	190	# %permissions = $(getPermissions($dbh,'user',$uid));
	191	getPermissions($dbh, 'user', $uid, \%permissions);
	192
	193	} # end initPermissions()
	194
	195
	196	## DNSDB::getPermissions()
	197	# Get permissions from DB
	198	# Requires DB handle, group or user flag, ID, and hashref.
	199	sub getPermissions {
	200	my $dbh = shift;
	201	my $type = shift;
	202	my $id = shift;
	203	my $hash = shift;
	204
	205	my $sql = qq(
	206	SELECT
	207	p.admin,p.self_edit,
	208	p.group_create,p.group_edit,p.group_delete,
	209	p.user_create,p.user_edit,p.user_delete,
	210	p.domain_create,p.domain_edit,p.domain_delete,
	211	p.record_create,p.record_edit,p.record_delete
	212	FROM permissions p
	213	);
	214	if ($type eq 'group') {
	215	$sql .= qq(
	216	JOIN groups g ON g.permission_id=p.permission_id
	217	WHERE g.group_id=?
	218	);
	219	} else {
	220	$sql .= qq(
	221	JOIN users u ON u.permission_id=p.permission_id
	222	WHERE u.user_id=?
	223	);
	224	}
	225
	226	my $sth = $dbh->prepare($sql);
	227
	228	$sth->execute($id) or die "argh: ".$sth->errstr;
	229
	230	# my $permref = $sth->fetchrow_hashref;
	231	# return $permref;
	232	# $hash = $permref;
	233	# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
	234	($hash->{admin},$hash->{self_edit},
	235	$hash->{group_create},$hash->{group_edit},$hash->{group_delete},
	236	$hash->{user_create},$hash->{user_edit},$hash->{user_delete},
	237	$hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
	238	$hash->{record_create},$hash->{record_edit},$hash->{record_delete})
	239	= $sth->fetchrow_array;
	240
	241	} # end getPermissions()
	242
	243
	244	## DNSDB::changePermissions()
	245	# Update an ACL entry
	246	# Takes a db handle, type, owner-id, and hashref for the changed permissions.
	247	sub changePermissions {
	248	my $dbh = shift;
	249	my $type = shift;
	250	my $id = shift;
	251	my $newperms = shift;
[87]	252	my $inherit = shift \|\| 0;
[65]	253
[78]	254	my $failmsg = '';
[66]	255
[87]	256	# see if we're switching from inherited to custom. for bonus points,
	257	# snag the permid and parent permid anyway, since we'll need the permid
	258	# to set/alter custom perms, and both if we're switching from custom to
	259	# inherited.
	260	my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id".
[65]	261	" FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
[66]	262	" JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
[65]	263	" WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
	264	$sth->execute($id);
	265
[87]	266	my ($wasinherited,$permid,$parpermid) = $sth->fetchrow_array;
[66]	267
[78]	268	# hack phtoui
	269	# group id 1 is "special" in that it's it's own parent (err... possibly.)
	270	# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
	271	$wasinherited = 0 if ($type eq 'group' && $id == 1);
	272
[66]	273	local $dbh->{AutoCommit} = 0;
	274	local $dbh->{RaiseError} = 1;
	275
	276	# Wrap all the SQL in a transaction
	277	eval {
[87]	278	if ($inherit) {
	279
	280	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
	281	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
	282	$dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
	283
	284	} else {
	285
	286	if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
[66]	287	##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
[87]	288	# ... if'n'when we have groups with fully inherited permissions.
	289	# SQL is coo
	290	$dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
	291	"SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
	292	($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
	293	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
	294	$dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
	295	"WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
[66]	296	}
[78]	297
[87]	298	# and now set the permissions we were passed
	299	foreach (@permtypes) {
	300	if (defined ($newperms->{$_})) {
	301	$dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
	302	}
	303	}
	304
	305	} # (inherited->)? custom
	306
[66]	307	$dbh->commit;
	308	}; # end eval
	309	if ($@) {
	310	my $msg = $@;
	311	eval { $dbh->rollback; };
[87]	312	return ('FAIL',"$failmsg: $msg ($permid)");
[66]	313	} else {
	314	return ('OK',$permid);
	315	}
	316
[65]	317	} # end changePermissions()
	318
	319
[67]	320	## DNSDB::comparePermissions()
	321	# Compare two permission hashes
	322	# Returns '>', '<', '=', '!'
	323	sub comparePermissions {
	324	my $p1 = shift;
	325	my $p2 = shift;
	326
	327	my $retval = '='; # assume equality until proven otherwise
	328
	329	no warnings "uninitialized";
	330
	331	foreach (@permtypes) {
	332	next if $p1->{$_} == $p2->{$_}; # equal is good
	333	if ($p1->{$_} && !$p2->{$_}) {
	334	if ($retval eq '<') { # if we've already found an unequal pair where
	335	$retval = '!'; # $p2 has more access, and we now find a pair
	336	last; # where $p1 has more access, the overall access
	337	} # is neither greater or lesser, it's unequal.
	338	$retval = '>';
	339	}
	340	if (!$p1->{$_} && $p2->{$_}) {
	341	if ($retval eq '>') { # if we've already found an unequal pair where
	342	$retval = '!'; # $p1 has more access, and we now find a pair
	343	last; # where $p2 has more access, the overall access
	344	} # is neither greater or lesser, it's unequal.
	345	$retval = '<';
	346	}
	347	}
	348	return $retval;
	349	} # end comparePermissions()
	350
	351
[55]	352	## DNSDB::_log()
	353	# Log an action
	354	# Internal sub
	355	# Takes a database handle, <foo>, <bar>
	356	sub _log {
	357	} # end _log
	358
	359
[2]	360	##
	361	## Processing subs
	362	##
	363
	364	## DNSDB::addDomain()
	365	# Add a domain
	366	# Takes a database handle, domain name, numeric group, and boolean(ish) state (active/inactive)
	367	# Returns a status code and message
	368	sub addDomain {
	369	$errstr = '';
	370	my $dbh = shift;
	371	return ('FAIL',"Need database handle") if !$dbh;
	372	my $domain = shift;
[91]	373	return ('FAIL',"Domain must not be blank") if !$domain;
[2]	374	my $group = shift;
	375	return ('FAIL',"Need group") if !defined($group);
	376	my $state = shift;
	377	return ('FAIL',"Need domain status") if !defined($state);
	378
[38]	379	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
[3]	380	my $dom_id;
	381
[38]	382	# quick check to start to see if we've already got one
	383	$sth->execute($domain);
	384	($dom_id) = $sth->fetchrow_array;
	385
	386	return ('FAIL', "Domain already exists") if $dom_id;
	387
[2]	388	# Allow transactions, and raise an exception on errors so we can catch it later.
	389	# Use local to make sure these get "reset" properly on exiting this block
	390	local $dbh->{AutoCommit} = 0;
	391	local $dbh->{RaiseError} = 1;
	392
	393	# Wrap all the SQL in a transaction
	394	eval {
	395	# insert the domain...
	396	my $sth = $dbh->prepare("insert into domains (domain,group_id,status) values (?,?,?)");
	397	$sth->execute($domain,$group,$state);
	398
	399	# get the ID...
	400	$sth = $dbh->prepare("select domain_id from domains where domain='$domain'");
	401	$sth->execute;
[3]	402	($dom_id) = $sth->fetchrow_array();
[2]	403
	404	# ... and now we construct the standard records from the default set. NB: group should be variable.
[3]	405	$sth = $dbh->prepare("select host,type,val,distance,weight,port,ttl from default_records where group_id=$group");
	406	my $sth_in = $dbh->prepare("insert into records (domain_id,host,type,val,distance,weight,port,ttl)".
	407	" values ($dom_id,?,?,?,?,?,?,?)");
[2]	408	$sth->execute;
[3]	409	while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $sth->fetchrow_array()) {
[2]	410	$host =~ s/DOMAIN/$domain/g;
[37]	411	$val =~ s/DOMAIN/$domain/g;
[3]	412	$sth_in->execute($host,$type,$val,$dist,$weight,$port,$ttl);
[2]	413	}
	414
	415	# once we get here, we should have suceeded.
	416	$dbh->commit;
	417	}; # end eval
	418
	419	if ($@) {
	420	my $msg = $@;
	421	eval { $dbh->rollback; };
	422	return ('FAIL',$msg);
	423	} else {
[3]	424	return ('OK',$dom_id);
[2]	425	}
	426	} # end addDomain
	427
	428
[3]	429	## DNSDB::delDomain()
	430	# Delete a domain.
	431	# for now, just delete the records, then the domain.
	432	# later we may want to archive it in some way instead (status code 2, for example?)
	433	sub delDomain {
	434	my $dbh = shift;
[5]	435	my $domid = shift;
[3]	436
	437	# Allow transactions, and raise an exception on errors so we can catch it later.
	438	# Use local to make sure these get "reset" properly on exiting this block
	439	local $dbh->{AutoCommit} = 0;
	440	local $dbh->{RaiseError} = 1;
	441
[23]	442	my $failmsg = '';
	443
[3]	444	# Wrap all the SQL in a transaction
	445	eval {
[5]	446	my $sth = $dbh->prepare("delete from records where domain_id=?");
[23]	447	$failmsg = "Failure removing domain records";
[5]	448	$sth->execute($domid);
	449	$sth = $dbh->prepare("delete from domains where domain_id=?");
[23]	450	$failmsg = "Failure removing domain";
[5]	451	$sth->execute($domid);
[3]	452
	453	# once we get here, we should have suceeded.
[23]	454	$dbh->commit;
[3]	455	}; # end eval
	456
	457	if ($@) {
	458	my $msg = $@;
	459	eval { $dbh->rollback; };
[23]	460	return ('FAIL',"$failmsg: $msg");
[3]	461	} else {
	462	return ('OK','OK');
	463	}
	464
	465	} # end delDomain()
	466
	467
[2]	468	## DNSDB::domainName()
	469	# Return the domain name based on a domain ID
	470	# Takes a database handle and the domain ID
	471	# Returns the domain name or undef on failure
	472	sub domainName {
	473	$errstr = '';
	474	my $dbh = shift;
	475	my $domid = shift;
[91]	476	my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
[2]	477	$errstr = $DBI::errstr if !$domname;
	478	return $domname if $domname;
[91]	479	} # end domainName()
[2]	480
	481
[91]	482	## DNSDB::domainID()
	483	# Takes a database handle and domain name
	484	# Returns the domain ID number
	485	sub domainID {
	486	$errstr = '';
	487	my $dbh = shift;
	488	my $domain = shift;
	489	my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE domain=?", undef, ($domain) );
	490	$errstr = $DBI::errstr if !$domid;
	491	return $domid if $domid;
	492	} # end domainID()
	493
	494
[18]	495	## DNSDB::addGroup()
	496	# Add a group
[66]	497	# Takes a database handle, group name, parent group, hashref for permissions,
	498	# and optional template-vs-cloneme flag
[18]	499	# Returns a status code and message
	500	sub addGroup {
	501	$errstr = '';
	502	my $dbh = shift;
[20]	503	my $groupname = shift;
	504	my $pargroup = shift;
[66]	505	my $permissions = shift;
[18]	506
[66]	507	# 0 indicates "custom", hardcoded.
[18]	508	# Any other value clones that group's default records, if it exists.
[66]	509	my $inherit = shift \|\| 0;
	510	##fixme: need a flag to indicate clone records or <?> ?
[18]	511
	512	# Allow transactions, and raise an exception on errors so we can catch it later.
	513	# Use local to make sure these get "reset" properly on exiting this block
	514	local $dbh->{AutoCommit} = 0;
	515	local $dbh->{RaiseError} = 1;
	516
[38]	517	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
	518	my $group_id;
	519
	520	# quick check to start to see if we've already got one
	521	$sth->execute($groupname);
	522	($group_id) = $sth->fetchrow_array;
	523
	524	return ('FAIL', "Group already exists") if $group_id;
	525
[18]	526	# Wrap all the SQL in a transaction
	527	eval {
[38]	528	$sth = $dbh->prepare("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)");
[20]	529	$sth->execute($pargroup,$groupname);
[18]	530
	531	$sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
[20]	532	$sth->execute($groupname);
	533	my ($groupid) = $sth->fetchrow_array();
[18]	534
[66]	535	# Permissions
	536	if ($inherit) {
	537	} else {
	538	my @permvals;
	539	foreach (@permtypes) {
	540	if (!defined ($permissions->{$_})) {
	541	push @permvals, 0;
	542	} else {
	543	push @permvals, $permissions->{$_};
	544	}
	545	}
	546
	547	$sth = $dbh->prepare("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")");
	548	$sth->execute($groupid,@permvals);
	549
	550	$sth = $dbh->prepare("SELECT permission_id FROM permissions WHERE group_id=?");
	551	$sth->execute($groupid);
	552	my ($permid) = $sth->fetchrow_array();
	553
	554	$dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
	555	} # done permission fiddling
	556
	557	# Default records
[18]	558	$sth = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
[20]	559	"VALUES ($groupid,?,?,?,?,?,?,?)");
[66]	560	if ($inherit) {
[87]	561	# Duplicate records from parent. Actually relying on inherited records feels
	562	# very fragile, and it would be problematic to roll over at a later time.
[18]	563	my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
[87]	564	$sth2->execute($pargroup);
[18]	565	while (my @clonedata = $sth2->fetchrow_array) {
	566	$sth->execute(@clonedata);
	567	}
	568	} else {
[66]	569	##fixme: Hardcoding is Bad, mmmmkaaaay?
[18]	570	# reasonable basic defaults for SOA, MX, NS, and minimal hosting
	571	# could load from a config file, but somewhere along the line we need hardcoded bits.
	572	$sth->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
	573	$sth->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
	574	$sth->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
	575	$sth->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
	576	$sth->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
	577	$sth->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
	578	}
	579
	580	# once we get here, we should have suceeded.
	581	$dbh->commit;
	582	}; # end eval
	583
	584	if ($@) {
	585	my $msg = $@;
	586	eval { $dbh->rollback; };
	587	return ('FAIL',$msg);
	588	} else {
	589	return ('OK','OK');
	590	}
	591
	592	} # end addGroup()
	593
	594
[22]	595	## DNSDB::delGroup()
	596	# Delete a group.
	597	# Takes a group ID
	598	# Returns a status code and message
	599	sub delGroup {
	600	my $dbh = shift;
	601	my $groupid = shift;
	602
	603	# Allow transactions, and raise an exception on errors so we can catch it later.
	604	# Use local to make sure these get "reset" properly on exiting this block
	605	local $dbh->{AutoCommit} = 0;
	606	local $dbh->{RaiseError} = 1;
	607
	608	##fixme: locate "knowable" error conditions and deal with them before the eval
[23]	609	# ... or inside, whatever.
[22]	610	# -> domains still exist in group
	611	# -> ...
[23]	612	my $failmsg = '';
[22]	613
	614	# Wrap all the SQL in a transaction
	615	eval {
[23]	616	my $sth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?");
[22]	617	$sth->execute($groupid);
[23]	618	my ($domcnt) = $sth->fetchrow_array;
	619	$failmsg = "Can't remove group ".groupName($dbh,$groupid);
	620	die "$domcnt domains still in group\n" if $domcnt;
	621
	622	$sth = $dbh->prepare("delete from default_records where group_id=?");
	623	$failmsg = "Failed to delete default records for ".groupName($dbh,$groupid);
	624	$sth->execute($groupid);
[22]	625	$sth = $dbh->prepare("delete from groups where group_id=?");
[23]	626	$failmsg = "Failed to remove group ".groupName($dbh,$groupid);
[22]	627	$sth->execute($groupid);
	628
	629	# once we get here, we should have suceeded.
	630	$dbh->commit;
	631	}; # end eval
	632
	633	if ($@) {
	634	my $msg = $@;
	635	eval { $dbh->rollback; };
[23]	636	return ('FAIL',"$failmsg: $msg");
[22]	637	} else {
	638	return ('OK','OK');
	639	}
	640	} # end delGroup()
	641
	642
[19]	643	## DNSDB::getChildren()
	644	# Get a list of all groups whose parent^n is group <n>
[24]	645	# Takes a database handle, group ID, reference to an array to put the group IDs in,
	646	# and an optional flag to return only immediate children or all children-of-children
	647	# default to returning all children
[19]	648	# Calls itself
	649	sub getChildren {
	650	$errstr = '';
	651	my $dbh = shift;
[20]	652	my $rootgroup = shift;
	653	my $groupdest = shift;
[24]	654	my $immed = shift \|\| 'all';
[19]	655
	656	# special break for default group; otherwise we get stuck.
[20]	657	if ($rootgroup == 1) {
[19]	658	# by definition, group 1 is the Root Of All Groups
[24]	659	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
	660	($immed ne 'all' ? " AND parent_group_id=1" : ''));
[19]	661	$sth->execute;
	662	while (my @this = $sth->fetchrow_array) {
[20]	663	push @$groupdest, @this;
[19]	664	}
	665	} else {
	666	my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=?");
[20]	667	$sth->execute($rootgroup);
[19]	668	return if $sth->rows == 0;
[20]	669	my @grouplist;
	670	while (my ($group) = $sth->fetchrow_array) {
	671	push @$groupdest, $group;
[24]	672	getChildren($dbh,$group,$groupdest) if $immed eq 'all';
[19]	673	}
	674	}
	675	} # end getChildren()
	676
	677
[20]	678	## DNSDB::groupName()
[17]	679	# Return the group name based on a group ID
	680	# Takes a database handle and the group ID
	681	# Returns the group name or undef on failure
[20]	682	sub groupName {
[13]	683	$errstr = '';
	684	my $dbh = shift;
[20]	685	my $groupid = shift;
	686	my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
	687	$sth->execute($groupid);
	688	my ($groupname) = $sth->fetchrow_array();
	689	$errstr = $DBI::errstr if !$groupname;
	690	return $groupname if $groupname;
	691	} # end groupName
[13]	692
	693
[24]	694	## DNSDB::addUser()
[87]	695	# Add a user.
	696	# Takes a DB handle, username, group ID, password, state (active/inactive).
	697	# Optionally accepts:
	698	# user type (user/admin) - defaults to user
	699	# permissions string - defaults to inherit from group
	700	# three valid forms:
	701	# i - Inherit permissions
	702	# c:<user_id> - Clone permissions from <user_id>
	703	# C:<permission list> - Set these specific permissions
	704	# first name - defaults to username
	705	# last name - defaults to blank
	706	# phone - defaults to blank (could put other data within column def)
[90]	707	# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
[24]	708	sub addUser {
	709	$errstr = '';
	710	my $dbh = shift;
	711	my $username = shift;
	712	my $group = shift;
	713	my $pass = shift;
	714	my $state = shift;
[25]	715
[90]	716	return ('FAIL', "Missing one or more required entries") if !defined($state);
	717	return ('FAIL', "Username must not be blank") if !$username;
[87]	718
[25]	719	my $type = shift \|\| 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
	720
[67]	721	my $permstring = shift \|\| 'i'; # default is to inhert permissions from group
	722
[25]	723	my $fname = shift \|\| $username;
[24]	724	my $lname = shift \|\| '';
[25]	725	my $phone = shift \|\| ''; # not going format-check
[24]	726
[38]	727	my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
[24]	728	my $user_id;
	729
[38]	730	# quick check to start to see if we've already got one
	731	$sth->execute($username);
	732	($user_id) = $sth->fetchrow_array;
	733
	734	return ('FAIL', "User already exists") if $user_id;
	735
[24]	736	# Allow transactions, and raise an exception on errors so we can catch it later.
	737	# Use local to make sure these get "reset" properly on exiting this block
	738	local $dbh->{AutoCommit} = 0;
	739	local $dbh->{RaiseError} = 1;
	740
[94]	741	my $failmsg = '';
	742
[24]	743	# Wrap all the SQL in a transaction
	744	eval {
[87]	745	# insert the user... note we set inherited perms by default since
	746	# it's simple and cleans up some other bits of state
	747	my $sth = $dbh->prepare("INSERT INTO users ".
	748	"(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
	749	"VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
	750	$sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
[24]	751
	752	# get the ID...
[94]	753	($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
[24]	754
[87]	755	# Permissions! Gotta set'em all!
	756	die "Invalid permission string $permstring"
	757	if $permstring !~ /^(?:
	758	i # inherit
	759	\|c:\d+ # clone
	760	# custom. no, the leading , is not a typo
	761	\|C:(?:,(?:group\|user\|domain\|record\|self)_(?:edit\|create\|delete))+
	762	)$/x;
	763	# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
	764	if ($permstring ne 'i') {
	765	# for cloned or custom permissions, we have to create a new permissions entry.
	766	my $clonesrc = $group;
	767	if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
	768	$dbh->do("INSERT INTO permissions ($permlist,user_id) ".
	769	"SELECT $permlist,? FROM permissions WHERE permission_id=".
	770	"(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
	771	undef, ($user_id,$clonesrc) );
	772	$dbh->do("UPDATE users SET permission_id=".
	773	"(SELECT permission_id FROM permissions WHERE user_id=?) ".
	774	"WHERE user_id=?", undef, ($user_id, $user_id) );
	775	}
	776	if ($permstring =~ /^C:/) {
	777	# finally for custom permissions, we set the passed-in permissions (and unset
	778	# any that might have been brought in by the clone operation above)
	779	my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
	780	undef, ($user_id) );
	781	foreach (@permtypes) {
	782	if ($permstring =~ /,$_/) {
	783	$dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
	784	} else {
	785	$dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
	786	}
	787	}
	788	}
	789
	790	$dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
	791
[25]	792	##fixme: add another table to hold name/email for log table?
	793
[24]	794	# once we get here, we should have suceeded.
	795	$dbh->commit;
	796	}; # end eval
	797
	798	if ($@) {
	799	my $msg = $@;
	800	eval { $dbh->rollback; };
[87]	801	return ('FAIL',$msg." $failmsg");
[24]	802	} else {
	803	return ('OK',$user_id);
	804	}
	805	} # end addUser
	806
	807
[55]	808	## DNSDB::checkUser()
	809	# Check user/pass combo on login
	810	sub checkUser {
	811	my $dbh = shift;
	812	my $user = shift;
[56]	813	my $inpass = shift;
[55]	814
	815	my $sth = $dbh->prepare("SELECT user_id,group_id,password,firstname,lastname FROM users WHERE username=?");
	816	$sth->execute($user);
	817	my ($uid,$gid,$pass,$fname,$lname) = $sth->fetchrow_array;
	818	my $loginfailed = 1 if !defined($uid);
	819
	820	if ($pass =~ m\|^\$1\$([A-Za-z0-9/.]+)\$\|) {
[56]	821	$loginfailed = 1 if $pass ne unix_md5_crypt($inpass,$1);
[55]	822	} else {
[56]	823	$loginfailed = 1 if $pass ne $inpass;
[55]	824	}
	825
	826	# nnnngggg
	827	return ($uid, $gid);
	828	} # end checkUser
	829
	830
[83]	831	## DNSDB:: updateUser()
[90]	832	# Update general data about user
[83]	833	sub updateUser {
	834	my $dbh = shift;
	835	my $uid = shift;
	836	my $username = shift;
	837	my $group = shift;
	838	my $pass = shift;
	839	my $state = shift;
[87]	840	my $type = shift \|\| 'u';
[83]	841	my $fname = shift \|\| $username;
	842	my $lname = shift \|\| '';
	843	my $phone = shift \|\| ''; # not going format-check
	844
	845	my $failmsg = '';
	846
	847	# Allow transactions, and raise an exception on errors so we can catch it later.
	848	# Use local to make sure these get "reset" properly on exiting this block
	849	local $dbh->{AutoCommit} = 0;
	850	local $dbh->{RaiseError} = 1;
	851
	852	my $sth;
	853
	854	# Password can be left blank; if so we assume there's one on file.
	855	# Actual blank passwords are bad, mm'kay?
	856	if (!$pass) {
	857	$sth = $dbh->prepare("SELECT password FROM users WHERE user_id=?");
	858	$sth->execute($uid);
	859	($pass) = $sth->fetchrow_array;
	860	} else {
	861	$pass = unix_md5_crypt($pass);
	862	}
	863
	864	eval {
	865	my $sth = $dbh->prepare(q(
	866	UPDATE users
	867	SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?
	868	WHERE user_id=?
	869	)
	870	);
	871	$sth->execute($username, $pass, $fname, $lname, $phone, $type, $state, $uid);
	872	$dbh->commit;
	873	};
	874	if ($@) {
	875	my $msg = $@;
	876	eval { $dbh->rollback; };
	877	return ('FAIL',"$failmsg: $msg");
	878	} else {
	879	return ('OK','OK');
	880	}
	881	} # end updateUser()
	882
	883
[24]	884	## DNSDB::delUser()
	885	#
	886	sub delUser {
[25]	887	my $dbh = shift;
	888	return ('FAIL',"Need database handle") if !$dbh;
	889	my $userid = shift;
	890	return ('FAIL',"Missing userid") if !defined($userid);
	891
	892	my $sth = $dbh->prepare("delete from users where user_id=?");
	893	$sth->execute($userid);
	894
	895	return ('FAIL',"Couldn't remove user: ".$sth->errstr) if $sth->err;
	896
	897	return ('OK','OK');
	898
[24]	899	} # end delUser
	900
	901
[25]	902	## DNSDB::userFullName()
	903	# Return a pretty string!
	904	# Takes a user_id and optional printf-ish string to indicate which pieces where:
	905	# %u for the username
	906	# %f for the first name
	907	# %l for the last name
	908	# All other text in the passed string will be left as-is.
	909	##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
	910	sub userFullName {
	911	$errstr = '';
	912	my $dbh = shift;
	913	my $userid = shift;
	914	my $fullformat = shift \|\| '%f %l (%u)';
	915	my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
	916	$sth->execute($userid);
	917	my ($uname,$fname,$lname) = $sth->fetchrow_array();
	918	$errstr = $DBI::errstr if !$uname;
	919
	920	$fullformat =~ s/\%u/$uname/g;
	921	$fullformat =~ s/\%f/$fname/g;
	922	$fullformat =~ s/\%l/$lname/g;
	923
	924	return $fullformat;
	925	} # end userFullName
	926
	927
[51]	928	## DNSDB::userStatus()
	929	# Sets and/or returns a user's status
	930	# Takes a database handle, user ID and optionally a status argument
	931	# Returns undef on errors.
	932	sub userStatus {
	933	my $dbh = shift;
	934	my $id = shift;
	935	my $newstatus = shift;
	936
	937	return undef if $id !~ /^\d+$/;
	938
	939	my $sth;
	940
	941	# ooo, fun! let's see what we were passed for status
	942	if ($newstatus) {
	943	$sth = $dbh->prepare("update users set status=? where user_id=?");
	944	# ass-u-me caller knows what's going on in full
	945	if ($newstatus =~ /^[01]$/) { # only two valid for now.
	946	$sth->execute($newstatus,$id);
	947	} elsif ($newstatus =~ /^usero(?:n\|ff)$/) {
	948	$sth->execute(($newstatus eq 'useron' ? 1 : 0),$id);
	949	}
	950	}
	951
	952	$sth = $dbh->prepare("select status from users where user_id=?");
	953	$sth->execute($id);
	954	my ($status) = $sth->fetchrow_array;
	955	return $status;
	956	} # end userStatus()
	957
	958
[83]	959	## DNSDB::getUserData()
	960	# Get misc user data for display
	961	sub getUserData {
	962	my $dbh = shift;
	963	my $uid = shift;
	964
	965	my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
	966	"FROM users WHERE user_id=?");
	967	$sth->execute($uid);
	968	return $sth->fetchrow_hashref();
	969
	970	} # end getUserData()
	971
	972
[2]	973	## DNSDB::getSOA()
	974	# Return all suitable fields from an SOA record in separate elements of a hash
	975	# Takes a database handle, default/live flag, and group (default) or domain (live) ID
	976	sub getSOA {
	977	$errstr = '';
	978	my $dbh = shift;
	979	my $def = shift;
	980	my $id = shift;
	981	my %ret;
	982
[101]	983	# (ab)use distance and weight columns to store SOA data
	984
	985	my $sql = "SELECT record_id,host,val,ttl,distance from";
[2]	986	if ($def eq 'def' or $def eq 'y') {
[101]	987	$sql .= " default_records WHERE group_id=? AND type=$reverse_typemap{SOA}";
[2]	988	} else {
	989	# we're editing a live SOA record; find based on domain
[101]	990	$sql .= " records WHERE domain_id=? AND type=$reverse_typemap{SOA}";
[2]	991	}
	992	my $sth = $dbh->prepare($sql);
[101]	993	$sth->execute($id);
[2]	994
[101]	995	my ($recid,$host,$val,$ttl,$serial) = $sth->fetchrow_array();
[2]	996	my ($prins,$contact) = split /:/, $host;
	997	my ($refresh,$retry,$expire,$minttl) = split /:/, $val;
	998
	999	$ret{recid} = $recid;
	1000	$ret{ttl} = $ttl;
[101]	1001	$ret{serial} = $serial;
[2]	1002	$ret{prins} = $prins;
	1003	$ret{contact} = $contact;
	1004	$ret{refresh} = $refresh;
	1005	$ret{retry} = $retry;
	1006	$ret{expire} = $expire;
	1007	$ret{minttl} = $minttl;
	1008
	1009	return %ret;
	1010	} # end getSOA()
	1011
	1012
	1013	## DNSDB::getRecLine()
	1014	# Return all data fields for a zone record in separate elements of a hash
	1015	# Takes a database handle, default/live flag, and record ID
	1016	sub getRecLine {
	1017	$errstr = '';
	1018	my $dbh = shift;
	1019	my $def = shift;
	1020	my $id = shift;
	1021
[90]	1022	my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl,r.longrec_id,l.recdata".
	1023	(($def eq 'def' or $def eq 'y') ? ',r.group_id FROM default_' : ',r.domain_id FROM ').
	1024	"records r LEFT OUTER JOIN longrecs l ON r.longrec_id=l.longrec_id WHERE record_id=?";
	1025	my $ret = $dbh->selectrow_hashref($sql, undef, ($id) ) or warn $dbh->errstr;
[2]	1026
[90]	1027	if ($dbh->err) {
[2]	1028	$errstr = $DBI::errstr;
	1029	return undef;
	1030	}
	1031
[90]	1032	$ret->{val} = $ret->{recdata} if $ret->{longrec_id}; # put the long data in the real value space
	1033	delete $ret->{longrec_id}; # remove these since they shouldn't be exposed - the caller
	1034	delete $ret->{recdata}; # should not care about "long records" vs normal ones.
[107]	1035	$ret->{parid} = (($def eq 'def' or $def eq 'y') ? $ret->{group_id} : $ret->{domain_id});
[90]	1036
	1037	return $ret;
[2]	1038	}
	1039
	1040
	1041	##fixme: should use above (getRecLine()) to get lines for below?
	1042	## DNSDB::getDomRecs()
	1043	# Return records for a domain
	1044	# Takes a database handle, default/live flag, group/domain ID, start,
	1045	# number of records, sort field, and sort order
	1046	# Returns a reference to an array of hashes
	1047	sub getDomRecs {
	1048	$errstr = '';
	1049	my $dbh = shift;
	1050	my $type = shift;
	1051	my $id = shift;
[4]	1052	my $nrecs = shift \|\| 'all';
	1053	my $nstart = shift \|\| 0;
[2]	1054
[4]	1055	## for order, need to map input to column names
	1056	my $order = shift \|\| 'host';
[72]	1057	my $direction = shift \|\| 'ASC';
[4]	1058
[90]	1059	$type = 'y' if $type eq 'def';
	1060
	1061	my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl,r.longrec_id,l.recdata FROM ";
	1062	$sql .= "default_" if $type eq 'y';
	1063	$sql .= "records r ";
[104]	1064	$sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
[90]	1065	$sql .= "LEFT OUTER JOIN longrecs l ON r.longrec_id=l.longrec_id ";
	1066	if ($type eq 'y') {
	1067	$sql .= "WHERE r.group_id=?";
[2]	1068	} else {
[90]	1069	$sql .= "WHERE r.domain_id=?";
[2]	1070	}
[104]	1071	$sql .= " AND NOT r.type=$reverse_typemap{SOA}";
	1072	# use alphaorder column for "correct" ordering of sort-by-type instead of DNS RR type number
	1073	$sql .= " ORDER BY ".($order eq 'type' ? 't.alphaorder' : "r.$order")." $direction";
[90]	1074	$sql .= " LIMIT $nrecs OFFSET ".($nstart*$nrecs) if $nstart ne 'all';
[4]	1075
[90]	1076	my $sth = $dbh->prepare($sql) or warn $dbh->errstr;
	1077	$sth->execute($id) or warn "$sql: ".$sth->errstr;
[2]	1078
	1079	my @retbase;
	1080	while (my $ref = $sth->fetchrow_hashref()) {
[90]	1081	$ref->{val} = $ref->{recdata} if $ref->{longrec_id}; # put the long data in the real value space
	1082	delete $ref->{longrec_id}; # remove these since they shouldn't be exposed - the caller
	1083	delete $ref->{recdata}; # should not care about "long records" vs normal ones.
[2]	1084	push @retbase, $ref;
	1085	}
	1086
	1087	my $ret = \@retbase;
	1088	return $ret;
	1089	} # end getDomRecs()
	1090
	1091
[91]	1092	## DNSDB::getRecCount()
	1093	# Return count of non-SOA records in domain (or default records in a group)
	1094	# Takes a database handle, default/live flag and group/domain ID
	1095	# Returns the count
	1096	sub getRecCount {
	1097	my $dbh = shift;
	1098	my $defrec = shift;
	1099	my $id = shift;
	1100
	1101	my ($count) = $dbh->selectrow_array("SELECT count(*) FROM ".
	1102	($defrec eq 'y' ? 'default_' : '')."records ".
	1103	"WHERE ".($defrec eq 'y' ? 'group' : 'domain')."_id=? ".
	1104	"AND NOT type=$reverse_typemap{SOA}", undef, ($id) );
	1105
	1106	return $count;
	1107
	1108	} # end getRecCount()
	1109
	1110
[3]	1111	## DNSDB::addRec()
[2]	1112	# Add a new record to a domain or a group's default records
	1113	# Takes a database handle, default/live flag, group/domain ID,
	1114	# host, type, value, and TTL
	1115	# Some types require additional detail: "distance" for MX and SRV,
	1116	# and weight/port for SRV
	1117	# Returns a status code and detail message in case of error
	1118	sub addRec {
	1119	$errstr = '';
	1120	my $dbh = shift;
	1121	my $defrec = shift;
	1122	my $id = shift;
	1123
	1124	my $host = shift;
	1125	my $rectype = shift;
	1126	my $val = shift;
	1127	my $ttl = shift;
	1128
	1129	my $fields = ($defrec eq 'y' ? 'group_id' : 'domain_id').",host,type,val,ttl";
[24]	1130	my $vallen = "?,?,?,?,?";
	1131	my @vallist = ($id,$host,$rectype,$val,$ttl);
[2]	1132
	1133	my $dist;
	1134	if ($rectype == $reverse_typemap{MX} or $rectype == $reverse_typemap{SRV}) {
	1135	$dist = shift;
	1136	return ('FAIL',"Need distance for $typemap{$rectype} record") if !defined($dist);
	1137	$fields .= ",distance";
[24]	1138	$vallen .= ",?";
	1139	push @vallist, $dist;
[2]	1140	}
	1141	my $weight;
	1142	my $port;
	1143	if ($rectype == $reverse_typemap{SRV}) {
[24]	1144	# check for _service._protocol. NB: RFC2782 does not say "MUST"... nor "SHOULD"...
	1145	# it just says (paraphrased) "... is prepended with _ to prevent DNS collisions"
	1146	return ('FAIL',"SRV records must begin with _service._protocol")
	1147	if $host !~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-z0-9-]+/;
[2]	1148	$weight = shift;
	1149	$port = shift;
	1150	return ('FAIL',"Need weight and port for SRV record") if !defined($weight) or !defined($port);
	1151	$fields .= ",weight,port";
[24]	1152	$vallen .= ",?,?";
	1153	push @vallist, ($weight,$port);
[2]	1154	}
	1155
[90]	1156	# Allow transactions, and raise an exception on errors so we can catch it later.
	1157	# Use local to make sure these get "reset" properly on exiting this block
	1158	local $dbh->{AutoCommit} = 0;
	1159	local $dbh->{RaiseError} = 1;
[2]	1160
[90]	1161	eval {
	1162	if (length($val) > 100 ) {
	1163	# extralong records get an entry in a separate table.
	1164	$dbh->do("INSERT INTO longrecs (recdata) VALUES (?)", undef, ($val) );
	1165	my ($longid) = $dbh->selectrow_array("SELECT longrec_id FROM longrecs WHERE recdata=?", undef, ($val) );
	1166	$fields .= ",longrec_id";
	1167	$vallen .= ",?";
	1168	push @vallist, $longid;
	1169	$vallist[3] = ''; # so we don't barf when we insert the main record
	1170	}
	1171	$dbh->do("INSERT INTO ".($defrec eq 'y' ? 'default_' : '')."records ($fields) VALUES ($vallen)",
	1172	undef, @vallist);
	1173	$dbh->commit;
	1174	};
	1175	if ($@) {
	1176	my $msg = $@;
	1177	eval { $dbh->rollback; };
	1178	return ('FAIL',$msg);
	1179	}
[2]	1180
	1181	return ('OK','OK');
[90]	1182
[2]	1183	} # end addRec()
	1184
	1185
[16]	1186	## DNSDB::updateRec()
	1187	# Update a record
	1188	sub updateRec {
	1189	$errstr = '';
[17]	1190
[16]	1191	my $dbh = shift;
	1192	my $defrec = shift;
	1193	my $id = shift;
	1194
	1195	# all records have these
	1196	my $host = shift;
	1197	my $type = shift;
	1198	my $val = shift;
	1199	my $ttl = shift;
	1200
	1201	return('FAIL',"Missing standard argument(s)") if !defined($ttl);
	1202
	1203	# only MX and SRV will use these
	1204	my $dist = 0;
	1205	my $weight = 0;
	1206	my $port = 0;
	1207
	1208	if ($type == $reverse_typemap{MX} \|\| $type == $reverse_typemap{SRV}) {
[17]	1209	$dist = shift;
	1210	return ('FAIL',"MX or SRV requires distance") if !defined($dist);
[16]	1211	if ($type == $reverse_typemap{SRV}) {
[17]	1212	$weight = shift;
	1213	return ('FAIL',"SRV requires weight") if !defined($weight);
	1214	$port = shift;
	1215	return ('FAIL',"SRV requires port") if !defined($port);
[16]	1216	}
	1217	}
	1218
[90]	1219	# my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl,r.longrec_id,l.recdata FROM ";
	1220	# $sql .= "default_" if $type eq 'y';
	1221	# $sql .= "records r ";
	1222	# $sql .= "LEFT OUTER JOIN longrecs l ON r.longrec_id=l.longrec_id ";
[16]	1223
[90]	1224	# get the long record ID, if any
	1225	my ($longid) = $dbh->selectrow_array("SELECT longrec_id FROM ".($defrec eq 'y' ? 'default_' : '')."records ".
	1226	"WHERE record_id=?", undef, ($id) );
[16]	1227
[90]	1228	local $dbh->{AutoCommit} = 0;
	1229	local $dbh->{RaiseError} = 1;
	1230
	1231	eval {
	1232	# there's really no tidy way to squash this down. :/
	1233	if (length($val) > 100) {
	1234	if ($longid) {
	1235	$dbh->do("UPDATE longrecs SET recdata=? WHERE longrec_id=?", undef, ($val, $longid) );
	1236	} else {
	1237	##fixme: has to be a better way to be sure we get the right recid back once inserted...
	1238	$dbh->do("INSERT INTO longrecs (recdata) VALUES (?)", undef, ($val) );
	1239	my ($newlongid) = $dbh->selectrow_array("SELECT currval('longrecs_longrec_id_seq')");
	1240	$dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records SET val=?,longrec_id=? ".
	1241	"WHERE record_id=?", undef, ('', $newlongid, $id) );
	1242	}
	1243	} else {
	1244	if ($longid) {
	1245	$dbh->do("DELETE FROM longrecs WHERE longrec_id=?", undef, ($longid) );
	1246	$dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records SET val=?,longrec_id=NULL ".
	1247	"WHERE record_id=?", undef, ($val, $id) );
	1248	} else {
	1249	$dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records SET val=? ".
	1250	"WHERE record_id=?", undef, ($val, $id) );
	1251	}
	1252	}
	1253
	1254	$dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records ".
	1255	"SET host=?,type=?,ttl=?,distance=?,weight=?,port=? ".
	1256	"WHERE record_id=?", undef, ($host, $type, $ttl, $dist, $weight, $port, $id) );
	1257
	1258	};
	1259	if ($@) {
	1260	my $msg = $@;
	1261	$dbh->rollback;
	1262	return ('FAIL', $msg);
	1263	}
	1264	# return ('FAIL',$sth->errstr."<br>\n$errstr<br>\n") if $sth->err;
	1265
[16]	1266	return ('OK','OK');
	1267	} # end updateRec()
	1268
	1269
[3]	1270	## DNSDB::delRec()
	1271	# Delete a record.
	1272	sub delRec {
	1273	$errstr = '';
	1274	my $dbh = shift;
	1275	my $defrec = shift;
	1276	my $id = shift;
	1277
[62]	1278	my $sth = $dbh->prepare("DELETE FROM ".($defrec eq 'y' ? 'default_' : '')."records WHERE record_id=?");
[3]	1279	$sth->execute($id);
	1280
[23]	1281	return ('FAIL',"Couldn't remove record: ".$sth->errstr) if $sth->err;
[3]	1282
	1283	return ('OK','OK');
	1284	} # end delRec()
	1285
	1286
	1287	## DNSDB::domStatus()
	1288	# Sets and/or returns a domain's status
	1289	# Takes a database handle, domain ID and optionally a status argument
	1290	# Returns undef on errors.
	1291	sub domStatus {
	1292	my $dbh = shift;
	1293	my $id = shift;
	1294	my $newstatus = shift;
	1295
	1296	return undef if $id !~ /^\d+$/;
	1297
	1298	my $sth;
	1299
	1300	# ooo, fun! let's see what we were passed for status
	1301	if ($newstatus) {
	1302	$sth = $dbh->prepare("update domains set status=? where domain_id=?");
	1303	# ass-u-me caller knows what's going on in full
	1304	if ($newstatus =~ /^[01]$/) { # only two valid for now.
	1305	$sth->execute($newstatus,$id);
	1306	} elsif ($newstatus =~ /^domo(?:n\|ff)$/) {
	1307	$sth->execute(($newstatus eq 'domon' ? 1 : 0),$id);
	1308	}
	1309	}
	1310
	1311	$sth = $dbh->prepare("select status from domains where domain_id=?");
	1312	$sth->execute($id);
	1313	my ($status) = $sth->fetchrow_array;
	1314	return $status;
	1315	} # end domStatus()
	1316
	1317
[33]	1318	## DNSDB::importAXFR
	1319	# Import a domain via AXFR
[37]	1320	# Takes AXFR host, domain to transfer, group to put the domain in,
	1321	# and optionally:
	1322	# - active/inactive state flag (defaults to active)
	1323	# - overwrite-SOA flag (defaults to off)
	1324	# - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
	1325	# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
	1326	# if status is OK, but WARN includes conditions that are not fatal but should
	1327	# really be reported.
[33]	1328	sub importAXFR {
	1329	my $dbh = shift;
[35]	1330	my $ifrom_in = shift;
[33]	1331	my $domain = shift;
	1332	my $group = shift;
	1333	my $status = shift \|\| 1;
	1334	my $rwsoa = shift \|\| 0;
	1335	my $rwns = shift \|\| 0;
[37]	1336
[33]	1337	##fixme: add mode to delete&replace, merge+overwrite, merge new?
	1338
[37]	1339	my $nrecs = 0;
	1340	my $soaflag = 0;
	1341	my $nsflag = 0;
	1342	my $warnmsg = '';
	1343	my $ifrom;
[33]	1344
[35]	1345	# choke on possible bad setting in ifrom
[37]	1346	# IPv4 and v6, and valid hostnames!
[35]	1347	($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
	1348	return ('FAIL', "Bad AXFR source host $ifrom")
	1349	unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+\|[0-9a-z_.-]+)$/i);
	1350
[33]	1351	# Allow transactions, and raise an exception on errors so we can catch it later.
	1352	# Use local to make sure these get "reset" properly on exiting this block
	1353	local $dbh->{AutoCommit} = 0;
	1354	local $dbh->{RaiseError} = 1;
	1355
[37]	1356	my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
[34]	1357	my $dom_id;
	1358
[35]	1359	# quick check to start to see if we've already got one
[37]	1360	$sth->execute($domain);
	1361	($dom_id) = $sth->fetchrow_array;
[35]	1362
	1363	return ('FAIL', "Domain already exists") if $dom_id;
	1364
[33]	1365	eval {
	1366	# can't do this, can't nest transactions. sigh.
[35]	1367	#my ($dcode, $dmsg) = addDomain(dbh, domain, group, status);
[33]	1368
	1369	##fixme: serial
[37]	1370	my $sth = $dbh->prepare("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)");
	1371	$sth->execute($domain,$group,$status);
[33]	1372
[35]	1373	## bizarre DBI<->Net::DNS interaction bug:
	1374	## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
[37]	1375	## fixed, apparently I was doing something odd, but not certain what it was that
	1376	## caused a commit instead of barfing
[35]	1377
[33]	1378	# get domain id so we can do the records
[37]	1379	$sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
	1380	$sth->execute($domain);
	1381	($dom_id) = $sth->fetchrow_array();
[33]	1382
[34]	1383	my $res = Net::DNS::Resolver->new;
[35]	1384	$res->nameservers($ifrom);
	1385	$res->axfr_start($domain)
	1386	or die "Couldn't begin AXFR\n";
[34]	1387
[35]	1388	while (my $rr = $res->axfr_next()) {
[33]	1389	my $type = $rr->type;
[35]	1390
[34]	1391	my $sql = "INSERT INTO records (domain_id,host,type,ttl,val";
[33]	1392	my $vallen = "?,?,?,?,?";
	1393
[37]	1394	$soaflag = 1 if $type eq 'SOA';
	1395	$nsflag = 1 if $type eq 'NS';
[35]	1396
	1397	my @vallist = ($dom_id, $rr->name, $reverse_typemap{$type}, $rr->ttl);
[34]	1398
	1399	# "Primary" types:
	1400	# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
	1401	# maybe KEY
	1402
[35]	1403	# nasty big ugly case-like thing here, since we have to do some different
	1404	# processing depending on the record. le sigh.
	1405
[105]	1406	##fixme: what record types other than TXT can/will have >255-byte payloads?
	1407
[34]	1408	if ($type eq 'A') {
	1409	push @vallist, $rr->address;
	1410	} elsif ($type eq 'NS') {
[37]	1411	# hmm. should we warn here if subdomain NS'es are left alone?
	1412	next if ($rwns && ($rr->name eq $domain));
[34]	1413	push @vallist, $rr->nsdname;
[35]	1414	$nsflag = 1;
[34]	1415	} elsif ($type eq 'CNAME') {
	1416	push @vallist, $rr->cname;
	1417	} elsif ($type eq 'SOA') {
[37]	1418	next if $rwsoa;
[34]	1419	$vallist[1] = $rr->mname.":".$rr->rname;
	1420	push @vallist, ($rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum);
[35]	1421	$soaflag = 1;
[34]	1422	} elsif ($type eq 'PTR') {
[105]	1423	push @vallist, $rr->ptrdname;
[34]	1424	# hmm. PTR records should not be in forward zones.
	1425	} elsif ($type eq 'MX') {
[33]	1426	$sql .= ",distance";
	1427	$vallen .= ",?";
[34]	1428	push @vallist, $rr->exchange;
	1429	push @vallist, $rr->preference;
	1430	} elsif ($type eq 'TXT') {
	1431	##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
	1432	## but don't really seem enthusiastic about it.
[105]	1433	my $rrdata = $rr->txtdata;
	1434	if (length($rrdata) > 100 ) {
	1435	# extralong records get an entry in a separate table.
	1436	$dbh->do("INSERT INTO longrecs (recdata) VALUES (?)", undef, ($rrdata) );
	1437	my ($longid) = $dbh->selectrow_array("SELECT longrec_id FROM longrecs WHERE recdata=?", undef, ($rrdata) );
	1438	$sql .= ",longrec_id";
	1439	$vallen .= ",?";
	1440	push @vallist, '';
	1441	push @vallist, $longid;
	1442	} else {
	1443	push @vallist, $rrdata;
	1444	}
[34]	1445	} elsif ($type eq 'SPF') {
	1446	##fixme: and the same caveat here, since it is apparently a clone of ::TXT
[105]	1447	my $rrdata = $rr->txtdata;
	1448	if (length($rrdata) > 100 ) {
	1449	# extralong records get an entry in a separate table.
	1450	$dbh->do("INSERT INTO longrecs (recdata) VALUES (?)", undef, ($rrdata) );
	1451	my ($longid) = $dbh->selectrow_array("SELECT longrec_id FROM longrecs WHERE recdata=?", undef, ($rrdata) );
	1452	$sql .= ",longrec_id";
	1453	$vallen .= ",?";
	1454	push @vallist, '';
	1455	push @vallist, $longid;
	1456	} else {
	1457	push @vallist, $rrdata;
	1458	}
[34]	1459	} elsif ($type eq 'AAAA') {
	1460	push @vallist, $rr->address;
	1461	} elsif ($type eq 'SRV') {
	1462	$sql .= ",distance,weight,port" if $type eq 'SRV';
	1463	$vallen .= ",?,?,?" if $type eq 'SRV';
[37]	1464	push @vallist, $rr->target;
[34]	1465	push @vallist, $rr->priority;
	1466	push @vallist, $rr->weight;
	1467	push @vallist, $rr->port;
	1468	} elsif ($type eq 'KEY') {
[35]	1469	# we don't actually know what to do with these...
[34]	1470	push @vallist, ($rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname);
[35]	1471	} else {
[105]	1472	my $rrdata = $rr->rdatastr;
	1473	if (length($rrdata) > 100 ) {
	1474	# extralong records get an entry in a separate table.
	1475	$dbh->do("INSERT INTO longrecs (recdata) VALUES (?)", undef, ($rrdata) );
	1476	my ($longid) = $dbh->selectrow_array("SELECT longrec_id FROM longrecs WHERE recdata=?", undef, ($rrdata) );
	1477	$sql .= ",longrec_id";
	1478	$vallen .= ",?";
	1479	push @vallist, '';
	1480	push @vallist, $longid;
	1481	} else {
	1482	push @vallist, $rrdata;
	1483	}
[35]	1484	# Finding a different record type is not fatal.... just problematic.
[37]	1485	# We may not be able to export it correctly.
[35]	1486	$warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
[33]	1487	}
	1488
[34]	1489	# BIND supports:
	1490	# A CNAME HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) MX NS NULL
	1491	# PTR SOA TXT WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX
	1492	# ... if one can ever find the right magic to format them correctly
	1493
	1494	# Net::DNS supports:
	1495	# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
	1496	# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
	1497	# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
	1498
[37]	1499	$sth = $dbh->prepare($sql.") VALUES (".$vallen.")") or die "problem preparing record insert SQL\n";
	1500	$sth->execute(@vallist) or die "failed to insert ".$rr->string.": ".$sth->errstr."\n";
[34]	1501
[37]	1502	$nrecs++;
[34]	1503
[37]	1504	} # while axfr_next
	1505
	1506	# Overwrite SOA record
	1507	if ($rwsoa) {
	1508	$soaflag = 1;
	1509	my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
	1510	my $sthputsoa = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
	1511	$sthgetsoa->execute($group,$reverse_typemap{SOA});
	1512	while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
	1513	$host =~ s/DOMAIN/$domain/g;
	1514	$val =~ s/DOMAIN/$domain/g;
	1515	$sthputsoa->execute($dom_id,$host,$reverse_typemap{SOA},$val,$ttl);
[34]	1516	}
[37]	1517	}
[34]	1518
[37]	1519	# Overwrite NS records
	1520	if ($rwns) {
	1521	$nsflag = 1;
	1522	my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
	1523	my $sthputns = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
	1524	$sthgetns->execute($group,$reverse_typemap{NS});
	1525	while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
	1526	$host =~ s/DOMAIN/$domain/g;
	1527	$val =~ s/DOMAIN/$domain/g;
	1528	$sthputns->execute($dom_id,$host,$reverse_typemap{NS},$val,$ttl);
	1529	}
	1530	}
[34]	1531
[35]	1532	die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
	1533	die "Bad zone: No SOA record!\n" if !$soaflag;
	1534	die "Bad zone: No NS records!\n" if !$nsflag;
	1535
[37]	1536	$dbh->commit;
[35]	1537
[33]	1538	};
	1539
	1540	if ($@) {
	1541	my $msg = $@;
	1542	eval { $dbh->rollback; };
[34]	1543	return ('FAIL',$msg." $warnmsg");
[33]	1544	} else {
[35]	1545	return ('WARN', $warnmsg) if $warnmsg;
[91]	1546	return ('OK',"Imported OK");
[33]	1547	}
	1548
[37]	1549	# it should be impossible to get here.
[34]	1550	return ('WARN',"OOOK!");
[33]	1551	} # end importAXFR()
	1552
	1553
[103]	1554	## DNSDB::export()
	1555	# Export the DNS database, or a part of it
	1556	# Takes database handle, export type, optional arguments depending on type
	1557	# Writes zone data to targets as appropriate for type
	1558	sub export {
	1559	my $dbh = shift;
	1560	my $target = shift;
	1561
	1562	if ($target eq 'tiny') {
	1563	__export_tiny($dbh,@_);
	1564	}
	1565	# elsif ($target eq 'foo') {
	1566	# __export_foo($dbh,@_);
	1567	#}
	1568	# etc
	1569
	1570	} # end export()
	1571
	1572
	1573	## DNSDB::__export_tiny
	1574	# Internal sub to implement tinyDNS (compatible) export
	1575	# Takes database handle, filehandle to write export to, optional argument(s)
	1576	# to determine which data gets exported
	1577	sub __export_tiny {
	1578	my $dbh = shift;
	1579	my $datafile = shift;
	1580
	1581	##fixme: slurp up further options to specify particular zone(s) to export
	1582
	1583	## Convert a bare number into an octal-coded pair of octets.
	1584	# Take optional arg to indicate a decimal or hex input. Defaults to hex.
	1585	sub octalize {
	1586	my $tmp = shift;
	1587	my $srctype = shift \|\| 'h'; # default assumes hex string
	1588	$tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
	1589	$tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
	1590	my @o = ($tmp =~ /^(..)(..)$/); # split into octets
	1591	return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
	1592	}
	1593
	1594	##fixme: fail if $datafile isn't an open, writable file
	1595
	1596	# easy case - export all evarything
	1597	# not-so-easy case - export item(s) specified
	1598	# todo: figure out what kind of list we use to export items
	1599
	1600	my $domsth = $dbh->prepare("SELECT domain_id,domain,status FROM domains WHERE status=1");
	1601	my $recsth = $dbh->prepare("SELECT r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl,l.recdata ".
	1602	"FROM records r LEFT OUTER JOIN longrecs l ON r.longrec_id=l.longrec_id WHERE domain_id=?");
	1603	$domsth->execute();
	1604	while (my ($domid,$dom,$domstat) = $domsth->fetchrow_array) {
	1605	$recsth->execute($domid);
	1606	while (my ($host,$type,$val,$dist,$weight,$port,$ttl,$lval) = $recsth->fetchrow_array) {
	1607	$val = $lval if $lval;
	1608
	1609	# raw packet in unknown format: first byte indicates length
	1610	# of remaining data, allows up to 255 raw bytes
	1611
	1612	##fixme? append . to all host/val hostnames
	1613	if ($typemap{$type} eq 'SOA') {
	1614
	1615	# host contains pri-ns:responsible
	1616	# val is abused to contain refresh:retry:expire:minttl
	1617	##fixme: "manual" serial vs tinydns-autoserial
	1618	print $datafile "Z$host"."::$val:$ttl\n";
	1619
	1620	} elsif ($typemap{$type} eq 'A') {
	1621
	1622	print $datafile "+$host:$val:$ttl\n";
	1623
	1624	} elsif ($typemap{$type} eq 'NS') {
	1625
	1626	print $datafile "\&$host"."::$val:$ttl\n";
	1627
	1628	} elsif ($typemap{$type} eq 'AAAA') {
	1629
	1630	print $datafile ":$host:28:";
	1631	my $altgrp = 0;
	1632	my @altconv;
	1633	# Split in to up to 8 groups of hex digits (allows for :: 0-collapsing)
	1634	foreach (split /:/, $val) {
	1635	if (/^$/) {
	1636	# flag blank entry; this is a series of 0's of (currently) unknown length
	1637	$altconv[$altgrp++] = 's';
	1638	} else {
	1639	# call sub to convert 1-4 hex digits to 2 string-rep octal bytes
	1640	$altconv[$altgrp++] = octalize($_)
	1641	}
	1642	}
	1643	foreach my $octet (@altconv) {
	1644	# if not 's', output
	1645	print $datafile $octet unless $octet =~ /^s$/;
	1646	# if 's', output (9-array length)x literal '\000\000'
	1647	print $datafile '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
	1648	}
	1649	print $datafile ":$ttl\n";
	1650
	1651	} elsif ($typemap{$type} eq 'MX') {
	1652
	1653	print $datafile "\@$host"."::$val:$dist:$ttl\n";
	1654
	1655	} elsif ($typemap{$type} eq 'TXT') {
	1656
	1657	##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
	1658	$val =~ s/:/\\072/g; # may need to replace other symbols
	1659	print $datafile "'$host:$val:$ttl\n";
	1660
	1661	# by-hand TXT
	1662	#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
	1663	#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
	1664	#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
	1665
	1666	#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
	1667	#:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600
	1668
	1669	# very long TXT record as brought in by axfr-get
	1670	# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
	1671	# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
	1672	#:longtxt.deepnet.cx:16:
	1673	#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
	1674	#\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
	1675	#\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long.
	1676	#:3600
	1677
	1678	} elsif ($typemap{$type} eq 'CNAME') {
	1679
	1680	print $datafile "C$host:$val:$ttl\n";
	1681
	1682	} elsif ($typemap{$type} eq 'SRV') {
	1683
	1684	# data is two-byte values for priority, weight, port, in that order,
	1685	# followed by length/string data
	1686
	1687	print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d');
	1688
	1689	$val .= '.' if $val !~ /\.$/;
	1690	foreach (split /\./, $val) {
	1691	printf $datafile "\\%0.3o%s", length($_), $_;
	1692	}
	1693	print $datafile "\\000:$ttl\n";
	1694
	1695	} elsif ($typemap{$type} eq 'RP') {
	1696
	1697	# RP consists of two mostly free-form strings.
	1698	# The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
	1699	# The second is the "hostname" of a TXT record with more info.
	1700	print $datafile ":$host:17:";
	1701	my ($who,$what) = split /\s/, $val;
	1702	foreach (split /\./, $who) {
	1703	printf $datafile "\\%0.3o%s", length($_), $_;
	1704	}
	1705	print $datafile '\000';
	1706	foreach (split /\./, $what) {
	1707	printf $datafile "\\%0.3o%s", length($_), $_;
	1708	}
	1709	print $datafile "\\000:$ttl\n";
	1710
	1711	} elsif ($typemap{$type} eq 'PTR') {
	1712
	1713	# must handle both IPv4 and IPv6
	1714	##work
	1715
	1716	} # record type if-else
	1717
	1718	} # while ($recsth)
	1719	} # while ($domsth)
	1720	} # end __export_tiny()
	1721
	1722
[2]	1723	# shut Perl up
	1724	1;

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