source: trunk/DNSDB.pm@ 154

Last change on this file since 154 was 152, checked in by Kris Deugau, 13 years ago

/trunk

Tweaks and fixes in getParents() and isParent()
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File size: 59.3 KB
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1# dns/trunk/DNSDB.pm
2# Abstraction functions for DNS administration
3###
4# SVN revision info
5# $Date: 2011-10-21 21:59:01 +0000 (Fri, 21 Oct 2011) $
6# SVN revision $Rev: 152 $
7# Last update by $Author: kdeugau $
8###
9# Copyright (C) 2008 - Kris Deugau <kdeugau@deepnet.cx>
10
11package DNSDB;
12
13use strict;
14use warnings;
15use Exporter;
16use DBI;
17use Net::DNS;
18use Crypt::PasswdMD5;
19#use Net::SMTP;
20use NetAddr::IP;
21#use POSIX;
22use 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
64our $group = 1;
65our $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
70our %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
83our @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);
90our $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
94our %typemap;
95our %reverse_typemap;
96
97our %permissions;
98
99# Prepopulate a basic config. Note some of these *will* cause errors if left unset.
100our %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
118
119##
120## Initialization and cleanup subs
121##
122
123
124## DNSDB::loadConfig()
125# Load the minimum required initial state (DB connect info) from a config file
126# Load misc other bits while we're at it.
127# Takes an optional basename and config path to look for
128# Populates the %config and %def hashes
129sub loadConfig {
130 my $basename = shift || ''; # this will work OK
131
132 my $deferr = ''; # place to put error from default config file in case we can't find either one
133
134 my $configroot = '/etc/dnsdb';
135 $configroot = '' if $basename =~ m|^/|;
136 $basename .= ".conf" if $basename !~ /\.conf$/;
137 my $defconfig = "$configroot/dnsdb.conf";
138 my $siteconfig = "$configroot/$basename";
139
140 # System defaults
141 __cfgload("$defconfig") or $deferr = $errstr;
142
143 # Per-site-ish settings.
144 if ($basename ne '.conf') {
145 unless (__cfgload("$siteconfig")) {
146 $errstr = ($deferr ? "Error opening default config file $defconfig: $deferr\n" : '').
147 "Error opening site config file $siteconfig";
148 return;
149 }
150 }
151
152 # All good, clear the error and go home.
153 $errstr = '';
154 return 1;
155} # end loadConfig()
156
157
158## DNSDB::__cfgload()
159# Private sub to parse a config file and load it into %config
160# Takes a file handle on an open config file
161sub __cfgload {
162 $errstr = '';
163 my $cfgfile = shift;
164
165 if (open CFG, "<$cfgfile") {
166 while (<CFG>) {
167 chomp;
168 s/^\s*//;
169 next if /^#/;
170 next if /^$/;
171# hmm. more complex bits in this file might require [heading] headers, maybe?
172# $mode = $1 if /^\[(a-z)+]/;
173 # DB connect info
174 $config{dbname} = $1 if /^dbname\s*=\s*([a-z0-9_.-]+)/i;
175 $config{dbuser} = $1 if /^dbuser\s*=\s*([a-z0-9_.-]+)/i;
176 $config{dbpass} = $1 if /^dbpass\s*=\s*([a-z0-9_.-]+)/i;
177 $config{dbhost} = $1 if /^dbhost\s*=\s*([a-z0-9_.-]+)/i;
178 # SOA defaults
179 $def{contact} = $1 if /^contact\s*=\s*([a-z0-9_.-]+)/i;
180 $def{prins} = $1 if /^prins\s*=\s*([a-z0-9_.-]+)/i;
181 $def{soattl} = $1 if /^soattl\s*=\s*([a-z0-9_.-]+)/i;
182 $def{refresh} = $1 if /^refresh\s*=\s*([a-z0-9_.-]+)/i;
183 $def{retry} = $1 if /^retry\s*=\s*([a-z0-9_.-]+)/i;
184 $def{expire} = $1 if /^expire\s*=\s*([a-z0-9_.-]+)/i;
185 $def{minttl} = $1 if /^minttl\s*=\s*([a-z0-9_.-]+)/i;
186 $def{ttl} = $1 if /^ttl\s*=\s*([a-z0-9_.-]+)/i;
187 # Mail settings
188 $config{mailhost} = $1 if /^mailhost\s*=\s*([a-z0-9_.-]+)/i;
189 $config{mailsender} = $1 if /^mailsender\s*=\s*([a-z0-9_.@-]+)/i;
190 $config{mailname} = $1 if /^mailname\s*=\s*([a-z0-9\s_.-]+)/i;
191 }
192 close CFG;
193 } else {
194 $errstr = $!;
195 return;
196 }
197 return 1;
198} # end __cfgload()
199
200
201## DNSDB::connectDB()
202# Creates connection to DNS database.
203# Requires the database name, username, and password.
204# Returns a handle to the db.
205# Set up for a PostgreSQL db; could be any transactional DBMS with the
206# right changes.
207sub connectDB {
208 $errstr = '';
209 my $dbname = shift;
210 my $user = shift;
211 my $pass = shift;
212 my $dbh;
213 my $DSN = "DBI:Pg:dbname=$dbname";
214
215 my $host = shift;
216 $DSN .= ";host=$host" if $host;
217
218# Note that we want to autocommit by default, and we will turn it off locally as necessary.
219# We may not want to print gobbledygook errors; YMMV. Have to ponder that further.
220 $dbh = DBI->connect($DSN, $user, $pass, {
221 AutoCommit => 1,
222 PrintError => 0
223 })
224 or return (undef, $DBI::errstr) if(!$dbh);
225
226# Return here if we can't select. Note that this indicates a
227# problem executing the select.
228 my $sth = $dbh->prepare("select group_id from groups limit 1");
229 $sth->execute();
230 return (undef,$DBI::errstr) if ($sth->err);
231
232# See if the select returned anything (or null data). This should
233# succeed if the select executed, but...
234 $sth->fetchrow();
235 return (undef,$DBI::errstr) if ($sth->err);
236
237 $sth->finish;
238
239# If we get here, we should be OK.
240 return ($dbh,"DB connection OK");
241} # end connectDB
242
243
244## DNSDB::finish()
245# Cleans up after database handles and so on.
246# Requires a database handle
247sub finish {
248 my $dbh = $_[0];
249 $dbh->disconnect;
250} # end finish
251
252
253## DNSDB::initGlobals()
254# Initialize global variables
255# NB: this does NOT include web-specific session variables!
256# Requires a database handle
257sub initGlobals {
258 my $dbh = shift;
259
260# load system-wide site defaults and things from config file
261 if (open SYSDEFAULTS, "</etc/dnsdb.conf") {
262##fixme - error check!
263 while (<SYSDEFAULTS>) {
264 next if /^\s*#/;
265 $def{contact} = $1 if /contact ?= ?([a-z0-9_.-]+)/i;
266 $def{prins} = $1 if /prins ?= ?([a-z0-9_.-]+)/i;
267 $def{soattl} = $1 if /soattl ?= ?([a-z0-9_.-]+)/i;
268 $def{refresh} = $1 if /refresh ?= ?([a-z0-9_.-]+)/i;
269 $def{retry} = $1 if /retry ?= ?([a-z0-9_.-]+)/i;
270 $def{expire} = $1 if /expire ?= ?([a-z0-9_.-]+)/i;
271 $def{minttl} = $1 if /minttl ?= ?([a-z0-9_.-]+)/i;
272 $def{ttl} = $1 if /ttl ?= ?([a-z0-9_.-]+)/i;
273##fixme? load DB user/pass from config file?
274 }
275 }
276# load from database
277 my $sth = $dbh->prepare("select val,name from rectypes");
278 $sth->execute;
279 while (my ($recval,$recname) = $sth->fetchrow_array()) {
280 $typemap{$recval} = $recname;
281 $reverse_typemap{$recname} = $recval;
282 }
283} # end initGlobals
284
285
286## DNSDB::initPermissions()
287# Set up permissions global
288# Takes database handle and UID
289sub initPermissions {
290 my $dbh = shift;
291 my $uid = shift;
292
293# %permissions = $(getPermissions($dbh,'user',$uid));
294 getPermissions($dbh, 'user', $uid, \%permissions);
295
296} # end initPermissions()
297
298
299## DNSDB::getPermissions()
300# Get permissions from DB
301# Requires DB handle, group or user flag, ID, and hashref.
302sub getPermissions {
303 my $dbh = shift;
304 my $type = shift;
305 my $id = shift;
306 my $hash = shift;
307
308 my $sql = qq(
309 SELECT
310 p.admin,p.self_edit,
311 p.group_create,p.group_edit,p.group_delete,
312 p.user_create,p.user_edit,p.user_delete,
313 p.domain_create,p.domain_edit,p.domain_delete,
314 p.record_create,p.record_edit,p.record_delete
315 FROM permissions p
316 );
317 if ($type eq 'group') {
318 $sql .= qq(
319 JOIN groups g ON g.permission_id=p.permission_id
320 WHERE g.group_id=?
321 );
322 } else {
323 $sql .= qq(
324 JOIN users u ON u.permission_id=p.permission_id
325 WHERE u.user_id=?
326 );
327 }
328
329 my $sth = $dbh->prepare($sql);
330
331 $sth->execute($id) or die "argh: ".$sth->errstr;
332
333# my $permref = $sth->fetchrow_hashref;
334# return $permref;
335# $hash = $permref;
336# Eww. Need to learn how to forcibly drop a hashref onto an existing hash.
337 ($hash->{admin},$hash->{self_edit},
338 $hash->{group_create},$hash->{group_edit},$hash->{group_delete},
339 $hash->{user_create},$hash->{user_edit},$hash->{user_delete},
340 $hash->{domain_create},$hash->{domain_edit},$hash->{domain_delete},
341 $hash->{record_create},$hash->{record_edit},$hash->{record_delete})
342 = $sth->fetchrow_array;
343
344} # end getPermissions()
345
346
347## DNSDB::changePermissions()
348# Update an ACL entry
349# Takes a db handle, type, owner-id, and hashref for the changed permissions.
350sub changePermissions {
351 my $dbh = shift;
352 my $type = shift;
353 my $id = shift;
354 my $newperms = shift;
355 my $inherit = shift || 0;
356
357 my $failmsg = '';
358
359 # see if we're switching from inherited to custom. for bonus points,
360 # snag the permid and parent permid anyway, since we'll need the permid
361 # to set/alter custom perms, and both if we're switching from custom to
362 # inherited.
363 my $sth = $dbh->prepare("SELECT (u.permission_id=g.permission_id) AS was_inherited,u.permission_id,g.permission_id".
364 " FROM ".($type eq 'user' ? 'users' : 'groups')." u ".
365 " JOIN groups g ON u.".($type eq 'user' ? '' : 'parent_')."group_id=g.group_id ".
366 " WHERE u.".($type eq 'user' ? 'user' : 'group')."_id=?");
367 $sth->execute($id);
368
369 my ($wasinherited,$permid,$parpermid) = $sth->fetchrow_array;
370
371# hack phtoui
372# group id 1 is "special" in that it's it's own parent (err... possibly.)
373# may make its parent id 0 which doesn't exist, and as a bonus is Perl-false.
374 $wasinherited = 0 if ($type eq 'group' && $id == 1);
375
376 local $dbh->{AutoCommit} = 0;
377 local $dbh->{RaiseError} = 1;
378
379 # Wrap all the SQL in a transaction
380 eval {
381 if ($inherit) {
382
383 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='t',permission_id=? ".
384 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($parpermid, $id) );
385 $dbh->do("DELETE FROM permissions WHERE permission_id=?", undef, ($permid) );
386
387 } else {
388
389 if ($wasinherited) { # munge new permission entry in if we're switching from inherited perms
390##fixme: need to add semirecursive bit to properly munge inherited permission ID on subgroups and users
391# ... if'n'when we have groups with fully inherited permissions.
392 # SQL is coo
393 $dbh->do("INSERT INTO permissions ($permlist,".($type eq 'user' ? 'user' : 'group')."_id) ".
394 "SELECT $permlist,? FROM permissions WHERE permission_id=?", undef, ($id,$permid) );
395 ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions ".
396 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($id) );
397 $dbh->do("UPDATE ".($type eq 'user' ? 'users' : 'groups')." SET inherit_perm='f',permission_id=? ".
398 "WHERE ".($type eq 'user' ? 'user' : 'group')."_id=?", undef, ($permid, $id) );
399 }
400
401 # and now set the permissions we were passed
402 foreach (@permtypes) {
403 if (defined ($newperms->{$_})) {
404 $dbh->do("UPDATE permissions SET $_=? WHERE permission_id=?", undef, ($newperms->{$_},$permid) );
405 }
406 }
407
408 } # (inherited->)? custom
409
410 $dbh->commit;
411 }; # end eval
412 if ($@) {
413 my $msg = $@;
414 eval { $dbh->rollback; };
415 return ('FAIL',"$failmsg: $msg ($permid)");
416 } else {
417 return ('OK',$permid);
418 }
419
420} # end changePermissions()
421
422
423## DNSDB::comparePermissions()
424# Compare two permission hashes
425# Returns '>', '<', '=', '!'
426sub comparePermissions {
427 my $p1 = shift;
428 my $p2 = shift;
429
430 my $retval = '='; # assume equality until proven otherwise
431
432 no warnings "uninitialized";
433
434 foreach (@permtypes) {
435 next if $p1->{$_} == $p2->{$_}; # equal is good
436 if ($p1->{$_} && !$p2->{$_}) {
437 if ($retval eq '<') { # if we've already found an unequal pair where
438 $retval = '!'; # $p2 has more access, and we now find a pair
439 last; # where $p1 has more access, the overall access
440 } # is neither greater or lesser, it's unequal.
441 $retval = '>';
442 }
443 if (!$p1->{$_} && $p2->{$_}) {
444 if ($retval eq '>') { # if we've already found an unequal pair where
445 $retval = '!'; # $p1 has more access, and we now find a pair
446 last; # where $p2 has more access, the overall access
447 } # is neither greater or lesser, it's unequal.
448 $retval = '<';
449 }
450 }
451 return $retval;
452} # end comparePermissions()
453
454
455## DNSDB::changeGroup()
456# Change group ID of an entity
457# Takes a database handle, entity type, entity ID, and new group ID
458sub changeGroup {
459 my $dbh = shift;
460 my $type = shift;
461 my $id = shift;
462 my $newgrp = shift;
463
464##fixme: fail on not enough args
465 #return ('FAIL', "Missing
466
467 if ($type eq 'domain') {
468 $dbh->do("UPDATE domains SET group_id=? WHERE domain_id=?", undef, ($newgrp, $id))
469 or return ('FAIL','Group change failed: '.$dbh->errstr);
470 } elsif ($type eq 'user') {
471 $dbh->do("UPDATE users SET group_id=? WHERE user_id=?", undef, ($newgrp, $id))
472 or return ('FAIL','Group change failed: '.$dbh->errstr);
473 } elsif ($type eq 'group') {
474 $dbh->do("UPDATE groups SET parent_group_id=? WHERE group_id=?", undef, ($newgrp, $id))
475 or return ('FAIL','Group change failed: '.$dbh->errstr);
476 }
477 return ('OK','OK');
478} # end changeGroup()
479
480
481## DNSDB::_log()
482# Log an action
483# Internal sub
484# Takes a database handle, <foo>, <bar>
485sub _log {
486} # end _log
487
488
489##
490## Processing subs
491##
492
493## DNSDB::addDomain()
494# Add a domain
495# Takes a database handle, domain name, numeric group, and boolean(ish) state (active/inactive)
496# Returns a status code and message
497sub addDomain {
498 $errstr = '';
499 my $dbh = shift;
500 return ('FAIL',"Need database handle") if !$dbh;
501 my $domain = shift;
502 return ('FAIL',"Domain must not be blank") if !$domain;
503 my $group = shift;
504 return ('FAIL',"Need group") if !defined($group);
505 my $state = shift;
506 return ('FAIL',"Need domain status") if !defined($state);
507
508 $state = 1 if $state =~ /^active$/;
509 $state = 1 if $state =~ /^on$/;
510 $state = 0 if $state =~ /^inactive$/;
511 $state = 0 if $state =~ /^off$/;
512
513 return ('FAIL',"Invalid domain status") if $state !~ /^\d+$/;
514
515 my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
516 my $dom_id;
517
518# quick check to start to see if we've already got one
519 $sth->execute($domain);
520 ($dom_id) = $sth->fetchrow_array;
521
522 return ('FAIL', "Domain already exists") if $dom_id;
523
524 # Allow transactions, and raise an exception on errors so we can catch it later.
525 # Use local to make sure these get "reset" properly on exiting this block
526 local $dbh->{AutoCommit} = 0;
527 local $dbh->{RaiseError} = 1;
528
529 # Wrap all the SQL in a transaction
530 eval {
531 # insert the domain...
532 my $sth = $dbh->prepare("insert into domains (domain,group_id,status) values (?,?,?)");
533 $sth->execute($domain,$group,$state);
534
535 # get the ID...
536 $sth = $dbh->prepare("select domain_id from domains where domain='$domain'");
537 $sth->execute;
538 ($dom_id) = $sth->fetchrow_array();
539
540 # ... and now we construct the standard records from the default set. NB: group should be variable.
541 $sth = $dbh->prepare("select host,type,val,distance,weight,port,ttl from default_records where group_id=$group");
542 my $sth_in = $dbh->prepare("insert into records (domain_id,host,type,val,distance,weight,port,ttl)".
543 " values ($dom_id,?,?,?,?,?,?,?)");
544 $sth->execute;
545 while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $sth->fetchrow_array()) {
546 $host =~ s/DOMAIN/$domain/g;
547 $val =~ s/DOMAIN/$domain/g;
548 $sth_in->execute($host,$type,$val,$dist,$weight,$port,$ttl);
549 }
550
551 # once we get here, we should have suceeded.
552 $dbh->commit;
553 }; # end eval
554
555 if ($@) {
556 my $msg = $@;
557 eval { $dbh->rollback; };
558 return ('FAIL',$msg);
559 } else {
560 return ('OK',$dom_id);
561 }
562} # end addDomain
563
564
565## DNSDB::delDomain()
566# Delete a domain.
567# for now, just delete the records, then the domain.
568# later we may want to archive it in some way instead (status code 2, for example?)
569sub delDomain {
570 my $dbh = shift;
571 my $domid = shift;
572
573 # Allow transactions, and raise an exception on errors so we can catch it later.
574 # Use local to make sure these get "reset" properly on exiting this block
575 local $dbh->{AutoCommit} = 0;
576 local $dbh->{RaiseError} = 1;
577
578 my $failmsg = '';
579
580 # Wrap all the SQL in a transaction
581 eval {
582 my $sth = $dbh->prepare("delete from records where domain_id=?");
583 $failmsg = "Failure removing domain records";
584 $sth->execute($domid);
585 $sth = $dbh->prepare("delete from domains where domain_id=?");
586 $failmsg = "Failure removing domain";
587 $sth->execute($domid);
588
589 # once we get here, we should have suceeded.
590 $dbh->commit;
591 }; # end eval
592
593 if ($@) {
594 my $msg = $@;
595 eval { $dbh->rollback; };
596 return ('FAIL',"$failmsg: $msg");
597 } else {
598 return ('OK','OK');
599 }
600
601} # end delDomain()
602
603
604## DNSDB::domainName()
605# Return the domain name based on a domain ID
606# Takes a database handle and the domain ID
607# Returns the domain name or undef on failure
608sub domainName {
609 $errstr = '';
610 my $dbh = shift;
611 my $domid = shift;
612 my ($domname) = $dbh->selectrow_array("SELECT domain FROM domains WHERE domain_id=?", undef, ($domid) );
613 $errstr = $DBI::errstr if !$domname;
614 return $domname if $domname;
615} # end domainName()
616
617
618## DNSDB::domainID()
619# Takes a database handle and domain name
620# Returns the domain ID number
621sub domainID {
622 $errstr = '';
623 my $dbh = shift;
624 my $domain = shift;
625 my ($domid) = $dbh->selectrow_array("SELECT domain_id FROM domains WHERE domain=?", undef, ($domain) );
626 $errstr = $DBI::errstr if !$domid;
627 return $domid if $domid;
628} # end domainID()
629
630
631## DNSDB::addGroup()
632# Add a group
633# Takes a database handle, group name, parent group, hashref for permissions,
634# and optional template-vs-cloneme flag
635# Returns a status code and message
636sub addGroup {
637 $errstr = '';
638 my $dbh = shift;
639 my $groupname = shift;
640 my $pargroup = shift;
641 my $permissions = shift;
642
643 # 0 indicates "custom", hardcoded.
644 # Any other value clones that group's default records, if it exists.
645 my $inherit = shift || 0;
646##fixme: need a flag to indicate clone records or <?> ?
647
648 # Allow transactions, and raise an exception on errors so we can catch it later.
649 # Use local to make sure these get "reset" properly on exiting this block
650 local $dbh->{AutoCommit} = 0;
651 local $dbh->{RaiseError} = 1;
652
653 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
654 my $group_id;
655
656# quick check to start to see if we've already got one
657 $sth->execute($groupname);
658 ($group_id) = $sth->fetchrow_array;
659
660 return ('FAIL', "Group already exists") if $group_id;
661
662 # Wrap all the SQL in a transaction
663 eval {
664 $sth = $dbh->prepare("INSERT INTO groups (parent_group_id,group_name) VALUES (?,?)");
665 $sth->execute($pargroup,$groupname);
666
667 $sth = $dbh->prepare("SELECT group_id FROM groups WHERE group_name=?");
668 $sth->execute($groupname);
669 my ($groupid) = $sth->fetchrow_array();
670
671# Permissions
672 if ($inherit) {
673 } else {
674 my @permvals;
675 foreach (@permtypes) {
676 if (!defined ($permissions->{$_})) {
677 push @permvals, 0;
678 } else {
679 push @permvals, $permissions->{$_};
680 }
681 }
682
683 $sth = $dbh->prepare("INSERT INTO permissions (group_id,$permlist) values (?".',?'x($#permtypes+1).")");
684 $sth->execute($groupid,@permvals);
685
686 $sth = $dbh->prepare("SELECT permission_id FROM permissions WHERE group_id=?");
687 $sth->execute($groupid);
688 my ($permid) = $sth->fetchrow_array();
689
690 $dbh->do("UPDATE groups SET permission_id=$permid WHERE group_id=$groupid");
691 } # done permission fiddling
692
693# Default records
694 $sth = $dbh->prepare("INSERT INTO default_records (group_id,host,type,val,distance,weight,port,ttl) ".
695 "VALUES ($groupid,?,?,?,?,?,?,?)");
696 if ($inherit) {
697 # Duplicate records from parent. Actually relying on inherited records feels
698 # very fragile, and it would be problematic to roll over at a later time.
699 my $sth2 = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl FROM default_records WHERE group_id=?");
700 $sth2->execute($pargroup);
701 while (my @clonedata = $sth2->fetchrow_array) {
702 $sth->execute(@clonedata);
703 }
704 } else {
705##fixme: Hardcoding is Bad, mmmmkaaaay?
706 # reasonable basic defaults for SOA, MX, NS, and minimal hosting
707 # could load from a config file, but somewhere along the line we need hardcoded bits.
708 $sth->execute('ns1.example.com:hostmaster.example.com', 6, '10800:3600:604800:10800', 0, 0, 0, 86400);
709 $sth->execute('DOMAIN', 1, '192.168.4.2', 0, 0, 0, 7200);
710 $sth->execute('DOMAIN', 15, 'mx.example.com', 10, 0, 0, 7200);
711 $sth->execute('DOMAIN', 2, 'ns1.example.com', 0, 0, 0, 7200);
712 $sth->execute('DOMAIN', 2, 'ns2.example.com', 0, 0, 0, 7200);
713 $sth->execute('www.DOMAIN', 5, 'DOMAIN', 0, 0, 0, 7200);
714 }
715
716 # once we get here, we should have suceeded.
717 $dbh->commit;
718 }; # end eval
719
720 if ($@) {
721 my $msg = $@;
722 eval { $dbh->rollback; };
723 return ('FAIL',$msg);
724 } else {
725 return ('OK','OK');
726 }
727
728} # end addGroup()
729
730
731## DNSDB::delGroup()
732# Delete a group.
733# Takes a group ID
734# Returns a status code and message
735sub delGroup {
736 my $dbh = shift;
737 my $groupid = shift;
738
739 # Allow transactions, and raise an exception on errors so we can catch it later.
740 # Use local to make sure these get "reset" properly on exiting this block
741 local $dbh->{AutoCommit} = 0;
742 local $dbh->{RaiseError} = 1;
743
744##fixme: locate "knowable" error conditions and deal with them before the eval
745# ... or inside, whatever.
746# -> domains still exist in group
747# -> ...
748 my $failmsg = '';
749
750 # Wrap all the SQL in a transaction
751 eval {
752 my $sth = $dbh->prepare("SELECT count(*) FROM domains WHERE group_id=?");
753 $sth->execute($groupid);
754 my ($domcnt) = $sth->fetchrow_array;
755 $failmsg = "Can't remove group ".groupName($dbh,$groupid);
756 die "$domcnt domains still in group\n" if $domcnt;
757
758 $sth = $dbh->prepare("delete from default_records where group_id=?");
759 $failmsg = "Failed to delete default records for ".groupName($dbh,$groupid);
760 $sth->execute($groupid);
761 $sth = $dbh->prepare("delete from groups where group_id=?");
762 $failmsg = "Failed to remove group ".groupName($dbh,$groupid);
763 $sth->execute($groupid);
764
765 # once we get here, we should have suceeded.
766 $dbh->commit;
767 }; # end eval
768
769 if ($@) {
770 my $msg = $@;
771 eval { $dbh->rollback; };
772 return ('FAIL',"$failmsg: $msg");
773 } else {
774 return ('OK','OK');
775 }
776} # end delGroup()
777
778
779## DNSDB::getChildren()
780# Get a list of all groups whose parent^n is group <n>
781# Takes a database handle, group ID, reference to an array to put the group IDs in,
782# and an optional flag to return only immediate children or all children-of-children
783# default to returning all children
784# Calls itself
785sub getChildren {
786 $errstr = '';
787 my $dbh = shift;
788 my $rootgroup = shift;
789 my $groupdest = shift;
790 my $immed = shift || 'all';
791
792 # special break for default group; otherwise we get stuck.
793 if ($rootgroup == 1) {
794 # by definition, group 1 is the Root Of All Groups
795 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE NOT (group_id=1)".
796 ($immed ne 'all' ? " AND parent_group_id=1" : ''));
797 $sth->execute;
798 while (my @this = $sth->fetchrow_array) {
799 push @$groupdest, @this;
800 }
801 } else {
802 my $sth = $dbh->prepare("SELECT group_id FROM groups WHERE parent_group_id=?");
803 $sth->execute($rootgroup);
804 return if $sth->rows == 0;
805 my @grouplist;
806 while (my ($group) = $sth->fetchrow_array) {
807 push @$groupdest, $group;
808 getChildren($dbh,$group,$groupdest) if $immed eq 'all';
809 }
810 }
811} # end getChildren()
812
813
814## DNSDB::groupName()
815# Return the group name based on a group ID
816# Takes a database handle and the group ID
817# Returns the group name or undef on failure
818sub groupName {
819 $errstr = '';
820 my $dbh = shift;
821 my $groupid = shift;
822 my $sth = $dbh->prepare("SELECT group_name FROM groups WHERE group_id=?");
823 $sth->execute($groupid);
824 my ($groupname) = $sth->fetchrow_array();
825 $errstr = $DBI::errstr if !$groupname;
826 return $groupname if $groupname;
827} # end groupName
828
829
830## DNSDB::groupID()
831# Return the group ID based on the group name
832# Takes a database handle and the group name
833# Returns the group ID or undef on failure
834sub groupID {
835 $errstr = '';
836 my $dbh = shift;
837 my $group = shift;
838 my ($grpid) = $dbh->selectrow_array("SELECT group_id FROM groups WHERE group=?", undef, ($group) );
839 $errstr = $DBI::errstr if !$grpid;
840 return $grpid if $grpid;
841} # end groupID()
842
843
844## DNSDB::addUser()
845# Add a user.
846# Takes a DB handle, username, group ID, password, state (active/inactive).
847# Optionally accepts:
848# user type (user/admin) - defaults to user
849# permissions string - defaults to inherit from group
850# three valid forms:
851# i - Inherit permissions
852# c:<user_id> - Clone permissions from <user_id>
853# C:<permission list> - Set these specific permissions
854# first name - defaults to username
855# last name - defaults to blank
856# phone - defaults to blank (could put other data within column def)
857# Returns (OK,<uid>) on success, (FAIL,<message>) on failure
858sub addUser {
859 $errstr = '';
860 my $dbh = shift;
861 my $username = shift;
862 my $group = shift;
863 my $pass = shift;
864 my $state = shift;
865
866 return ('FAIL', "Missing one or more required entries") if !defined($state);
867 return ('FAIL', "Username must not be blank") if !$username;
868
869 my $type = shift || 'u'; # create limited users by default - fwiw, not sure yet how this will interact with ACLs
870
871 my $permstring = shift || 'i'; # default is to inhert permissions from group
872
873 my $fname = shift || $username;
874 my $lname = shift || '';
875 my $phone = shift || ''; # not going format-check
876
877 my $sth = $dbh->prepare("SELECT user_id FROM users WHERE username=?");
878 my $user_id;
879
880# quick check to start to see if we've already got one
881 $sth->execute($username);
882 ($user_id) = $sth->fetchrow_array;
883
884 return ('FAIL', "User already exists") if $user_id;
885
886 # Allow transactions, and raise an exception on errors so we can catch it later.
887 # Use local to make sure these get "reset" properly on exiting this block
888 local $dbh->{AutoCommit} = 0;
889 local $dbh->{RaiseError} = 1;
890
891 my $failmsg = '';
892
893 # Wrap all the SQL in a transaction
894 eval {
895 # insert the user... note we set inherited perms by default since
896 # it's simple and cleans up some other bits of state
897 my $sth = $dbh->prepare("INSERT INTO users ".
898 "(group_id,username,password,firstname,lastname,phone,type,status,permission_id,inherit_perm) ".
899 "VALUES (?,?,?,?,?,?,?,?,(SELECT permission_id FROM permissions WHERE group_id=?),'t')");
900 $sth->execute($group,$username,unix_md5_crypt($pass),$fname,$lname,$phone,$type,$state,$group);
901
902 # get the ID...
903 ($user_id) = $dbh->selectrow_array("SELECT currval('users_user_id_seq')");
904
905# Permissions! Gotta set'em all!
906 die "Invalid permission string $permstring"
907 if $permstring !~ /^(?:
908 i # inherit
909 |c:\d+ # clone
910 # custom. no, the leading , is not a typo
911 |C:(?:,(?:group|user|domain|record|self)_(?:edit|create|delete))*
912 )$/x;
913# bleh. I'd call another function to do my dirty work, but we're in the middle of a transaction already.
914 if ($permstring ne 'i') {
915 # for cloned or custom permissions, we have to create a new permissions entry.
916 my $clonesrc = $group;
917 if ($permstring =~ /^c:(\d+)/) { $clonesrc = $1; }
918 $dbh->do("INSERT INTO permissions ($permlist,user_id) ".
919 "SELECT $permlist,? FROM permissions WHERE permission_id=".
920 "(SELECT permission_id FROM permissions WHERE ".($permstring =~ /^c:/ ? 'user' : 'group')."_id=?)",
921 undef, ($user_id,$clonesrc) );
922 $dbh->do("UPDATE users SET permission_id=".
923 "(SELECT permission_id FROM permissions WHERE user_id=?) ".
924 "WHERE user_id=?", undef, ($user_id, $user_id) );
925 }
926 if ($permstring =~ /^C:/) {
927 # finally for custom permissions, we set the passed-in permissions (and unset
928 # any that might have been brought in by the clone operation above)
929 my ($permid) = $dbh->selectrow_array("SELECT permission_id FROM permissions WHERE user_id=?",
930 undef, ($user_id) );
931 foreach (@permtypes) {
932 if ($permstring =~ /,$_/) {
933 $dbh->do("UPDATE permissions SET $_='t' WHERE permission_id=?", undef, ($permid) );
934 } else {
935 $dbh->do("UPDATE permissions SET $_='f' WHERE permission_id=?", undef, ($permid) );
936 }
937 }
938 }
939
940 $dbh->do("UPDATE users SET inherit_perm='n' WHERE user_id=?", undef, ($user_id) );
941
942##fixme: add another table to hold name/email for log table?
943
944 # once we get here, we should have suceeded.
945 $dbh->commit;
946 }; # end eval
947
948 if ($@) {
949 my $msg = $@;
950 eval { $dbh->rollback; };
951 return ('FAIL',$msg." $failmsg");
952 } else {
953 return ('OK',$user_id);
954 }
955} # end addUser
956
957
958## DNSDB::checkUser()
959# Check user/pass combo on login
960sub checkUser {
961 my $dbh = shift;
962 my $user = shift;
963 my $inpass = shift;
964
965 my $sth = $dbh->prepare("SELECT user_id,group_id,password,firstname,lastname FROM users WHERE username=?");
966 $sth->execute($user);
967 my ($uid,$gid,$pass,$fname,$lname) = $sth->fetchrow_array;
968 my $loginfailed = 1 if !defined($uid);
969
970 if ($pass =~ m|^\$1\$([A-Za-z0-9/.]+)\$|) {
971 $loginfailed = 1 if $pass ne unix_md5_crypt($inpass,$1);
972 } else {
973 $loginfailed = 1 if $pass ne $inpass;
974 }
975
976 # nnnngggg
977 return ($uid, $gid);
978} # end checkUser
979
980
981## DNSDB:: updateUser()
982# Update general data about user
983sub updateUser {
984 my $dbh = shift;
985
986##fixme: tweak calling convention so that we can update any given bit of data
987 my $uid = shift;
988 my $username = shift;
989 my $group = shift;
990 my $pass = shift;
991 my $state = shift;
992 my $type = shift || 'u';
993 my $fname = shift || $username;
994 my $lname = shift || '';
995 my $phone = shift || ''; # not going format-check
996
997 my $failmsg = '';
998
999 # Allow transactions, and raise an exception on errors so we can catch it later.
1000 # Use local to make sure these get "reset" properly on exiting this block
1001 local $dbh->{AutoCommit} = 0;
1002 local $dbh->{RaiseError} = 1;
1003
1004 my $sth;
1005
1006 # Password can be left blank; if so we assume there's one on file.
1007 # Actual blank passwords are bad, mm'kay?
1008 if (!$pass) {
1009 $sth = $dbh->prepare("SELECT password FROM users WHERE user_id=?");
1010 $sth->execute($uid);
1011 ($pass) = $sth->fetchrow_array;
1012 } else {
1013 $pass = unix_md5_crypt($pass);
1014 }
1015
1016 eval {
1017 my $sth = $dbh->prepare(q(
1018 UPDATE users
1019 SET username=?, password=?, firstname=?, lastname=?, phone=?, type=?, status=?
1020 WHERE user_id=?
1021 )
1022 );
1023 $sth->execute($username, $pass, $fname, $lname, $phone, $type, $state, $uid);
1024 $dbh->commit;
1025 };
1026 if ($@) {
1027 my $msg = $@;
1028 eval { $dbh->rollback; };
1029 return ('FAIL',"$failmsg: $msg");
1030 } else {
1031 return ('OK','OK');
1032 }
1033} # end updateUser()
1034
1035
1036## DNSDB::delUser()
1037#
1038sub delUser {
1039 my $dbh = shift;
1040 return ('FAIL',"Need database handle") if !$dbh;
1041 my $userid = shift;
1042 return ('FAIL',"Missing userid") if !defined($userid);
1043
1044 my $sth = $dbh->prepare("delete from users where user_id=?");
1045 $sth->execute($userid);
1046
1047 return ('FAIL',"Couldn't remove user: ".$sth->errstr) if $sth->err;
1048
1049 return ('OK','OK');
1050
1051} # end delUser
1052
1053
1054## DNSDB::userFullName()
1055# Return a pretty string!
1056# Takes a user_id and optional printf-ish string to indicate which pieces where:
1057# %u for the username
1058# %f for the first name
1059# %l for the last name
1060# All other text in the passed string will be left as-is.
1061##fixme: need a "smart" option too, so that missing/null/blank first/last names don't give funky output
1062sub userFullName {
1063 $errstr = '';
1064 my $dbh = shift;
1065 my $userid = shift;
1066 my $fullformat = shift || '%f %l (%u)';
1067 my $sth = $dbh->prepare("select username,firstname,lastname from users where user_id=?");
1068 $sth->execute($userid);
1069 my ($uname,$fname,$lname) = $sth->fetchrow_array();
1070 $errstr = $DBI::errstr if !$uname;
1071
1072 $fullformat =~ s/\%u/$uname/g;
1073 $fullformat =~ s/\%f/$fname/g;
1074 $fullformat =~ s/\%l/$lname/g;
1075
1076 return $fullformat;
1077} # end userFullName
1078
1079
1080## DNSDB::userStatus()
1081# Sets and/or returns a user's status
1082# Takes a database handle, user ID and optionally a status argument
1083# Returns undef on errors.
1084sub userStatus {
1085 my $dbh = shift;
1086 my $id = shift;
1087 my $newstatus = shift;
1088
1089 return undef if $id !~ /^\d+$/;
1090
1091 my $sth;
1092
1093# ooo, fun! let's see what we were passed for status
1094 if ($newstatus) {
1095 $sth = $dbh->prepare("update users set status=? where user_id=?");
1096 # ass-u-me caller knows what's going on in full
1097 if ($newstatus =~ /^[01]$/) { # only two valid for now.
1098 $sth->execute($newstatus,$id);
1099 } elsif ($newstatus =~ /^usero(?:n|ff)$/) {
1100 $sth->execute(($newstatus eq 'useron' ? 1 : 0),$id);
1101 }
1102 }
1103
1104 $sth = $dbh->prepare("select status from users where user_id=?");
1105 $sth->execute($id);
1106 my ($status) = $sth->fetchrow_array;
1107 return $status;
1108} # end userStatus()
1109
1110
1111## DNSDB::getUserData()
1112# Get misc user data for display
1113sub getUserData {
1114 my $dbh = shift;
1115 my $uid = shift;
1116
1117 my $sth = $dbh->prepare("SELECT group_id,username,firstname,lastname,phone,type,status,inherit_perm ".
1118 "FROM users WHERE user_id=?");
1119 $sth->execute($uid);
1120 return $sth->fetchrow_hashref();
1121
1122} # end getUserData()
1123
1124
1125## DNSDB::getSOA()
1126# Return all suitable fields from an SOA record in separate elements of a hash
1127# Takes a database handle, default/live flag, and group (default) or domain (live) ID
1128sub getSOA {
1129 $errstr = '';
1130 my $dbh = shift;
1131 my $def = shift;
1132 my $id = shift;
1133 my %ret;
1134
1135 # (ab)use distance and weight columns to store SOA data
1136
1137 my $sql = "SELECT record_id,host,val,ttl,distance from";
1138 if ($def eq 'def' or $def eq 'y') {
1139 $sql .= " default_records WHERE group_id=? AND type=$reverse_typemap{SOA}";
1140 } else {
1141 # we're editing a live SOA record; find based on domain
1142 $sql .= " records WHERE domain_id=? AND type=$reverse_typemap{SOA}";
1143 }
1144 my $sth = $dbh->prepare($sql);
1145 $sth->execute($id);
1146
1147 my ($recid,$host,$val,$ttl,$serial) = $sth->fetchrow_array() or return;
1148 my ($prins,$contact) = split /:/, $host;
1149 my ($refresh,$retry,$expire,$minttl) = split /:/, $val;
1150
1151 $ret{recid} = $recid;
1152 $ret{ttl} = $ttl;
1153 $ret{serial} = $serial;
1154 $ret{prins} = $prins;
1155 $ret{contact} = $contact;
1156 $ret{refresh} = $refresh;
1157 $ret{retry} = $retry;
1158 $ret{expire} = $expire;
1159 $ret{minttl} = $minttl;
1160
1161 return %ret;
1162} # end getSOA()
1163
1164
1165## DNSDB::getRecLine()
1166# Return all data fields for a zone record in separate elements of a hash
1167# Takes a database handle, default/live flag, and record ID
1168sub getRecLine {
1169 $errstr = '';
1170 my $dbh = shift;
1171 my $def = shift;
1172 my $id = shift;
1173
1174 my $sql = "SELECT record_id,host,type,val,distance,weight,port,ttl".
1175 (($def eq 'def' or $def eq 'y') ? ',group_id FROM default_' : ',domain_id FROM ').
1176 "records WHERE record_id=?";
1177 my $ret = $dbh->selectrow_hashref($sql, undef, ($id) );
1178
1179 if ($dbh->err) {
1180 $errstr = $DBI::errstr;
1181 return undef;
1182 }
1183
1184 if (!$ret) {
1185 $errstr = "No such record";
1186 return undef;
1187 }
1188
1189 $ret->{parid} = (($def eq 'def' or $def eq 'y') ? $ret->{group_id} : $ret->{domain_id});
1190
1191 return $ret;
1192}
1193
1194
1195##fixme: should use above (getRecLine()) to get lines for below?
1196## DNSDB::getDomRecs()
1197# Return records for a domain
1198# Takes a database handle, default/live flag, group/domain ID, start,
1199# number of records, sort field, and sort order
1200# Returns a reference to an array of hashes
1201sub getDomRecs {
1202 $errstr = '';
1203 my $dbh = shift;
1204 my $type = shift;
1205 my $id = shift;
1206 my $nrecs = shift || 'all';
1207 my $nstart = shift || 0;
1208
1209## for order, need to map input to column names
1210 my $order = shift || 'host';
1211 my $direction = shift || 'ASC';
1212
1213 my $filter = shift || '';
1214 # keep the nasties down, since we can't ?-sub this bit. :/
1215 # note this is chars allowed in DNS hostnames
1216 $filter =~ s/[^a-zA-Z0-9_.:-]//g;
1217
1218 $type = 'y' if $type eq 'def';
1219
1220 my $sql = "SELECT r.record_id,r.host,r.type,r.val,r.distance,r.weight,r.port,r.ttl FROM ";
1221 $sql .= "default_" if $type eq 'y';
1222 $sql .= "records r ";
1223 $sql .= "INNER JOIN rectypes t ON r.type=t.val "; # for sorting by type alphabetically
1224 if ($type eq 'y') {
1225 $sql .= "WHERE r.group_id=?";
1226 } else {
1227 $sql .= "WHERE r.domain_id=?";
1228 }
1229 $sql .= " AND NOT r.type=$reverse_typemap{SOA}";
1230 $sql .= " AND host ILIKE '%$filter%'" if $filter;
1231 # use alphaorder column for "correct" ordering of sort-by-type instead of DNS RR type number
1232 $sql .= " ORDER BY ".($order eq 'type' ? 't.alphaorder' : "r.$order")." $direction";
1233 $sql .= " LIMIT $nrecs OFFSET ".($nstart*$nrecs) if $nstart ne 'all';
1234
1235 my $sth = $dbh->prepare($sql) or warn $dbh->errstr;
1236 $sth->execute($id) or warn "$sql: ".$sth->errstr;
1237
1238 my @retbase;
1239 while (my $ref = $sth->fetchrow_hashref()) {
1240 push @retbase, $ref;
1241 }
1242
1243 my $ret = \@retbase;
1244 return $ret;
1245} # end getDomRecs()
1246
1247
1248## DNSDB::getRecCount()
1249# Return count of non-SOA records in domain (or default records in a group)
1250# Takes a database handle, default/live flag, group/domain ID, and optional filtering modifier
1251# Returns the count
1252sub getRecCount {
1253 my $dbh = shift;
1254 my $defrec = shift;
1255 my $id = shift;
1256 my $filter = shift || '';
1257
1258 # keep the nasties down, since we can't ?-sub this bit. :/
1259 # note this is chars allowed in DNS hostnames
1260 $filter =~ s/[^a-zA-Z0-9_.:-]//g;
1261
1262 my ($count) = $dbh->selectrow_array("SELECT count(*) FROM ".
1263 ($defrec eq 'y' ? 'default_' : '')."records ".
1264 "WHERE ".($defrec eq 'y' ? 'group' : 'domain')."_id=? ".
1265 "AND NOT type=$reverse_typemap{SOA}".
1266 ($filter ? " AND host ILIKE '%$filter%'" : ''),
1267 undef, ($id) );
1268
1269 return $count;
1270
1271} # end getRecCount()
1272
1273
1274## DNSDB::addRec()
1275# Add a new record to a domain or a group's default records
1276# Takes a database handle, default/live flag, group/domain ID,
1277# host, type, value, and TTL
1278# Some types require additional detail: "distance" for MX and SRV,
1279# and weight/port for SRV
1280# Returns a status code and detail message in case of error
1281sub addRec {
1282 $errstr = '';
1283 my $dbh = shift;
1284 my $defrec = shift;
1285 my $id = shift;
1286
1287 my $host = shift;
1288 my $rectype = shift;
1289 my $val = shift;
1290 my $ttl = shift;
1291
1292 # Validation
1293 if ($rectype == $reverse_typemap{A} or $rectype == $reverse_typemap{AAAA}) {
1294 my $tmpip = new NetAddr::IP $val or
1295 return ("FAIL", "Address must be a valid IP address");
1296 }
1297
1298 my $fields = ($defrec eq 'y' ? 'group_id' : 'domain_id').",host,type,val,ttl";
1299 my $vallen = "?,?,?,?,?";
1300 my @vallist = ($id,$host,$rectype,$val,$ttl);
1301
1302 my $dist;
1303 if ($rectype == $reverse_typemap{MX} or $rectype == $reverse_typemap{SRV}) {
1304 $dist = shift;
1305 return ('FAIL',"Need distance for $typemap{$rectype} record") if !defined($dist);
1306 $fields .= ",distance";
1307 $vallen .= ",?";
1308 push @vallist, $dist;
1309 }
1310 my $weight;
1311 my $port;
1312 if ($rectype == $reverse_typemap{SRV}) {
1313 # check for _service._protocol. NB: RFC2782 does not say "MUST"... nor "SHOULD"...
1314 # it just says (paraphrased) "... is prepended with _ to prevent DNS collisions"
1315 return ('FAIL',"SRV records must begin with _service._protocol")
1316 if $host !~ /^_[A-Za-z]+\._[A-Za-z]+\.[a-z0-9-]+/;
1317 $weight = shift;
1318 $port = shift;
1319 return ('FAIL',"Need weight and port for SRV record") if !defined($weight) or !defined($port);
1320 $fields .= ",weight,port";
1321 $vallen .= ",?,?";
1322 push @vallist, ($weight,$port);
1323 }
1324
1325 # Allow transactions, and raise an exception on errors so we can catch it later.
1326 # Use local to make sure these get "reset" properly on exiting this block
1327 local $dbh->{AutoCommit} = 0;
1328 local $dbh->{RaiseError} = 1;
1329
1330 eval {
1331 $dbh->do("INSERT INTO ".($defrec eq 'y' ? 'default_' : '')."records ($fields) VALUES ($vallen)",
1332 undef, @vallist);
1333 $dbh->commit;
1334 };
1335 if ($@) {
1336 my $msg = $@;
1337 eval { $dbh->rollback; };
1338 return ('FAIL',$msg);
1339 }
1340
1341 return ('OK','OK');
1342
1343} # end addRec()
1344
1345
1346## DNSDB::updateRec()
1347# Update a record
1348sub updateRec {
1349 $errstr = '';
1350
1351 my $dbh = shift;
1352 my $defrec = shift;
1353 my $id = shift;
1354
1355# all records have these
1356 my $host = shift;
1357 my $type = shift;
1358 my $val = shift;
1359 my $ttl = shift;
1360
1361 return('FAIL',"Missing standard argument(s)") if !defined($ttl);
1362
1363# only MX and SRV will use these
1364 my $dist = 0;
1365 my $weight = 0;
1366 my $port = 0;
1367
1368 if ($type == $reverse_typemap{MX} || $type == $reverse_typemap{SRV}) {
1369 $dist = shift;
1370 return ('FAIL',"MX or SRV requires distance") if !defined($dist);
1371 if ($type == $reverse_typemap{SRV}) {
1372 $weight = shift;
1373 return ('FAIL',"SRV requires weight") if !defined($weight);
1374 $port = shift;
1375 return ('FAIL',"SRV requires port") if !defined($port);
1376 }
1377 }
1378
1379 local $dbh->{AutoCommit} = 0;
1380 local $dbh->{RaiseError} = 1;
1381
1382 eval {
1383 $dbh->do("UPDATE ".($defrec eq 'y' ? 'default_' : '')."records ".
1384 "SET host=?,val=?,type=?,ttl=?,distance=?,weight=?,port=? ".
1385 "WHERE record_id=?", undef, ($host, $val, $type, $ttl, $dist, $weight, $port, $id) );
1386 $dbh->commit;
1387 };
1388 if ($@) {
1389 my $msg = $@;
1390 $dbh->rollback;
1391 return ('FAIL', $msg);
1392 }
1393
1394 return ('OK','OK');
1395} # end updateRec()
1396
1397
1398## DNSDB::delRec()
1399# Delete a record.
1400sub delRec {
1401 $errstr = '';
1402 my $dbh = shift;
1403 my $defrec = shift;
1404 my $id = shift;
1405
1406 my $sth = $dbh->prepare("DELETE FROM ".($defrec eq 'y' ? 'default_' : '')."records WHERE record_id=?");
1407 $sth->execute($id);
1408
1409 return ('FAIL',"Couldn't remove record: ".$sth->errstr) if $sth->err;
1410
1411 return ('OK','OK');
1412} # end delRec()
1413
1414
1415 # Reference hashes.
1416 my %par_tbl = (
1417 group => 'groups',
1418 user => 'users',
1419 defrec => 'default_records',
1420 domain => 'domains',
1421 record => 'records'
1422 );
1423 my %id_col = (
1424 group => 'group_id',
1425 user => 'user_id',
1426 defrec => 'record_id',
1427 domain => 'domain_id',
1428 record => 'record_id'
1429 );
1430 my %par_col = (
1431 group => 'parent_group_id',
1432 user => 'group_id',
1433 defrec => 'group_id',
1434 domain => 'group_id',
1435 record => 'domain_id'
1436 );
1437 my %par_type = (
1438 group => 'group',
1439 user => 'group',
1440 defrec => 'group',
1441 domain => 'group',
1442 record => 'domain'
1443 );
1444
1445## DNSDB::getParents()
1446# Find out which entities are parent to the requested id
1447# Returns arrayref containing hash pairs of id/type
1448sub getParents {
1449 my $dbh = shift;
1450 my $id = shift;
1451 my $type = shift;
1452 my $depth = shift || 'all'; # valid values: 'all', 'immed', <int> (stop at this group ID)
1453
1454 my @parlist;
1455
1456 while (1) {
1457 my $result = $dbh->selectrow_hashref("SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?",
1458 undef, ($id) );
1459 my %tmp = ($result->{$par_col{$type}} => $par_type{$type});
1460 unshift @parlist, \%tmp;
1461 last if $result->{$par_col{$type}} == 1; # group 1 is its own parent
1462 $id = $result->{$par_col{$type}};
1463 $type = $par_type{$type};
1464 }
1465
1466 return \@parlist;
1467
1468} # end getParents()
1469
1470
1471## DNSDB::isParent()
1472# Returns true if $id1 is a parent of $id2, false otherwise
1473sub isParent {
1474 my $dbh = shift;
1475 my $id1 = shift;
1476 my $type1 = shift;
1477 my $id2 = shift;
1478 my $type2 = shift;
1479##todo: immediate, secondary, full (default)
1480
1481 # Return false on impossible relations
1482 return 0 if $type1 eq 'record'; # nothing may be a child of a record
1483 return 0 if $type1 eq 'defrec'; # nothing may be a child of a record
1484 return 0 if $type1 eq 'user'; # nothing may be child of a user
1485 return 0 if $type1 eq 'domain' && $type2 ne 'record'; # domain may not be a parent of anything other than a record
1486
1487 # group 1 is the ultimate root parent
1488 return 1 if $type1 eq 'group' && $id1 == 1;
1489
1490# almost the same loop as getParents() above
1491 my $id = $id2;
1492 my $type = $type2;
1493 my $foundparent = 0;
1494my $tmp = 0;
1495 while (1) {
1496my $sql = "SELECT $par_col{$type} FROM $par_tbl{$type} WHERE $id_col{$type} = ?";
1497 my $result = $dbh->selectrow_hashref($sql,
1498 undef, ($id) ) or warn $dbh->errstr." $sql";
1499 if ($result->{$par_col{$type}} == $id1) {
1500 $foundparent = 1;
1501 last;
1502 }
1503 # group 1 is its own parent. need this here more to break strange loops than for detecting a parent
1504 last if $result->{$par_col{$type}} == 1;
1505 $id = $result->{$par_col{$type}};
1506 $type = $par_type{$type};
1507last if $tmp++ > 10;
1508 }
1509
1510 return $foundparent;
1511} # end isParent()
1512
1513
1514## DNSDB::domStatus()
1515# Sets and/or returns a domain's status
1516# Takes a database handle, domain ID and optionally a status argument
1517# Returns undef on errors.
1518sub domStatus {
1519 my $dbh = shift;
1520 my $id = shift;
1521 my $newstatus = shift;
1522
1523 return undef if $id !~ /^\d+$/;
1524
1525 my $sth;
1526
1527# ooo, fun! let's see what we were passed for status
1528 if ($newstatus) {
1529 $sth = $dbh->prepare("update domains set status=? where domain_id=?");
1530 # ass-u-me caller knows what's going on in full
1531 if ($newstatus =~ /^[01]$/) { # only two valid for now.
1532 $sth->execute($newstatus,$id);
1533 } elsif ($newstatus =~ /^domo(?:n|ff)$/) {
1534 $sth->execute(($newstatus eq 'domon' ? 1 : 0),$id);
1535 }
1536 }
1537
1538 $sth = $dbh->prepare("select status from domains where domain_id=?");
1539 $sth->execute($id);
1540 my ($status) = $sth->fetchrow_array;
1541 return $status;
1542} # end domStatus()
1543
1544
1545## DNSDB::importAXFR
1546# Import a domain via AXFR
1547# Takes AXFR host, domain to transfer, group to put the domain in,
1548# and optionally:
1549# - active/inactive state flag (defaults to active)
1550# - overwrite-SOA flag (defaults to off)
1551# - overwrite-NS flag (defaults to off, doesn't affect subdomain NS records)
1552# Returns a status code (OK, WARN, or FAIL) and message - message should be blank
1553# if status is OK, but WARN includes conditions that are not fatal but should
1554# really be reported.
1555sub importAXFR {
1556 my $dbh = shift;
1557 my $ifrom_in = shift;
1558 my $domain = shift;
1559 my $group = shift;
1560 my $status = shift || 1;
1561 my $rwsoa = shift || 0;
1562 my $rwns = shift || 0;
1563
1564##fixme: add mode to delete&replace, merge+overwrite, merge new?
1565
1566 my $nrecs = 0;
1567 my $soaflag = 0;
1568 my $nsflag = 0;
1569 my $warnmsg = '';
1570 my $ifrom;
1571
1572 # choke on possible bad setting in ifrom
1573 # IPv4 and v6, and valid hostnames!
1574 ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
1575 return ('FAIL', "Bad AXFR source host $ifrom")
1576 unless ($ifrom) = ($ifrom_in =~ /^([0-9a-f\:.]+|[0-9a-z_.-]+)$/i);
1577
1578 # Allow transactions, and raise an exception on errors so we can catch it later.
1579 # Use local to make sure these get "reset" properly on exiting this block
1580 local $dbh->{AutoCommit} = 0;
1581 local $dbh->{RaiseError} = 1;
1582
1583 my $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
1584 my $dom_id;
1585
1586# quick check to start to see if we've already got one
1587 $sth->execute($domain);
1588 ($dom_id) = $sth->fetchrow_array;
1589
1590 return ('FAIL', "Domain already exists") if $dom_id;
1591
1592 eval {
1593 # can't do this, can't nest transactions. sigh.
1594 #my ($dcode, $dmsg) = addDomain(dbh, domain, group, status);
1595
1596##fixme: serial
1597 my $sth = $dbh->prepare("INSERT INTO domains (domain,group_id,status) VALUES (?,?,?)");
1598 $sth->execute($domain,$group,$status);
1599
1600## bizarre DBI<->Net::DNS interaction bug:
1601## sometimes a zone will cause an immediate commit-and-exit (sort of) of the while()
1602## fixed, apparently I was doing *something* odd, but not certain what it was that
1603## caused a commit instead of barfing
1604
1605 # get domain id so we can do the records
1606 $sth = $dbh->prepare("SELECT domain_id FROM domains WHERE domain=?");
1607 $sth->execute($domain);
1608 ($dom_id) = $sth->fetchrow_array();
1609
1610 my $res = Net::DNS::Resolver->new;
1611 $res->nameservers($ifrom);
1612 $res->axfr_start($domain)
1613 or die "Couldn't begin AXFR\n";
1614
1615 while (my $rr = $res->axfr_next()) {
1616 my $type = $rr->type;
1617
1618 my $sql = "INSERT INTO records (domain_id,host,type,ttl,val";
1619 my $vallen = "?,?,?,?,?";
1620
1621 $soaflag = 1 if $type eq 'SOA';
1622 $nsflag = 1 if $type eq 'NS';
1623
1624 my @vallist = ($dom_id, $rr->name, $reverse_typemap{$type}, $rr->ttl);
1625
1626# "Primary" types:
1627# A, NS, CNAME, SOA, PTR(warn in forward), MX, TXT, AAAA, SRV, A6(ob), SPF
1628# maybe KEY
1629
1630# nasty big ugly case-like thing here, since we have to do *some* different
1631# processing depending on the record. le sigh.
1632
1633##fixme: what record types other than TXT can/will have >255-byte payloads?
1634
1635 if ($type eq 'A') {
1636 push @vallist, $rr->address;
1637 } elsif ($type eq 'NS') {
1638# hmm. should we warn here if subdomain NS'es are left alone?
1639 next if ($rwns && ($rr->name eq $domain));
1640 push @vallist, $rr->nsdname;
1641 $nsflag = 1;
1642 } elsif ($type eq 'CNAME') {
1643 push @vallist, $rr->cname;
1644 } elsif ($type eq 'SOA') {
1645 next if $rwsoa;
1646 $vallist[1] = $rr->mname.":".$rr->rname;
1647 push @vallist, ($rr->refresh.":".$rr->retry.":".$rr->expire.":".$rr->minimum);
1648 $soaflag = 1;
1649 } elsif ($type eq 'PTR') {
1650 push @vallist, $rr->ptrdname;
1651 # hmm. PTR records should not be in forward zones.
1652 } elsif ($type eq 'MX') {
1653 $sql .= ",distance";
1654 $vallen .= ",?";
1655 push @vallist, $rr->exchange;
1656 push @vallist, $rr->preference;
1657 } elsif ($type eq 'TXT') {
1658##fixme: Net::DNS docs say this should be deprecated for rdatastr() or char_str_list(),
1659## but don't really seem enthusiastic about it.
1660 my $rrdata = $rr->txtdata;
1661 push @vallist, $rrdata;
1662 } elsif ($type eq 'SPF') {
1663##fixme: and the same caveat here, since it is apparently a clone of ::TXT
1664 my $rrdata = $rr->txtdata;
1665 push @vallist, $rrdata;
1666 } elsif ($type eq 'AAAA') {
1667 push @vallist, $rr->address;
1668 } elsif ($type eq 'SRV') {
1669 $sql .= ",distance,weight,port" if $type eq 'SRV';
1670 $vallen .= ",?,?,?" if $type eq 'SRV';
1671 push @vallist, $rr->target;
1672 push @vallist, $rr->priority;
1673 push @vallist, $rr->weight;
1674 push @vallist, $rr->port;
1675 } elsif ($type eq 'KEY') {
1676 # we don't actually know what to do with these...
1677 push @vallist, ($rr->flags.":".$rr->protocol.":".$rr->algorithm.":".$rr->key.":".$rr->keytag.":".$rr->privatekeyname);
1678 } else {
1679 my $rrdata = $rr->rdatastr;
1680 push @vallist, $rrdata;
1681 # Finding a different record type is not fatal.... just problematic.
1682 # We may not be able to export it correctly.
1683 $warnmsg .= "Unusual record ".$rr->name." ($type) found\n";
1684 }
1685
1686# BIND supports:
1687# A CNAME HINFO MB(ex) MD(ob) MF(ob) MG(ex) MINFO(ex) MR(ex) MX NS NULL
1688# PTR SOA TXT WKS AFSDB(ex) ISDN(ex) RP(ex) RT(ex) X25(ex) PX
1689# ... if one can ever find the right magic to format them correctly
1690
1691# Net::DNS supports:
1692# RRSIG SIG NSAP NS NIMLOC NAPTR MX MR MINFO MG MB LOC ISDN IPSECKEY HINFO
1693# EID DNAME CNAME CERT APL AFSDB AAAA A DS NXT NSEC3PARAM NSEC3 NSEC KEY
1694# DNSKEY DLV X25 TXT TSIG TKEY SSHFP SRV SPF SOA RT RP PX PTR NULL APL::AplItem
1695
1696 $sth = $dbh->prepare($sql.") VALUES (".$vallen.")") or die "problem preparing record insert SQL\n";
1697 $sth->execute(@vallist) or die "failed to insert ".$rr->string.": ".$sth->errstr."\n";
1698
1699 $nrecs++;
1700
1701 } # while axfr_next
1702
1703 # Overwrite SOA record
1704 if ($rwsoa) {
1705 $soaflag = 1;
1706 my $sthgetsoa = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
1707 my $sthputsoa = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
1708 $sthgetsoa->execute($group,$reverse_typemap{SOA});
1709 while (my ($host,$val,$ttl) = $sthgetsoa->fetchrow_array()) {
1710 $host =~ s/DOMAIN/$domain/g;
1711 $val =~ s/DOMAIN/$domain/g;
1712 $sthputsoa->execute($dom_id,$host,$reverse_typemap{SOA},$val,$ttl);
1713 }
1714 }
1715
1716 # Overwrite NS records
1717 if ($rwns) {
1718 $nsflag = 1;
1719 my $sthgetns = $dbh->prepare("SELECT host,val,ttl FROM default_records WHERE group_id=? AND type=?");
1720 my $sthputns = $dbh->prepare("INSERT INTO records (domain_id,host,type,val,ttl) VALUES (?,?,?,?,?)");
1721 $sthgetns->execute($group,$reverse_typemap{NS});
1722 while (my ($host,$val,$ttl) = $sthgetns->fetchrow_array()) {
1723 $host =~ s/DOMAIN/$domain/g;
1724 $val =~ s/DOMAIN/$domain/g;
1725 $sthputns->execute($dom_id,$host,$reverse_typemap{NS},$val,$ttl);
1726 }
1727 }
1728
1729 die "No records found; either $ifrom is not authoritative or doesn't allow transfers\n" if !$nrecs;
1730 die "Bad zone: No SOA record!\n" if !$soaflag;
1731 die "Bad zone: No NS records!\n" if !$nsflag;
1732
1733 $dbh->commit;
1734
1735 };
1736
1737 if ($@) {
1738 my $msg = $@;
1739 eval { $dbh->rollback; };
1740 return ('FAIL',$msg." $warnmsg");
1741 } else {
1742 return ('WARN', $warnmsg) if $warnmsg;
1743 return ('OK',"Imported OK");
1744 }
1745
1746 # it should be impossible to get here.
1747 return ('WARN',"OOOK!");
1748} # end importAXFR()
1749
1750
1751## DNSDB::export()
1752# Export the DNS database, or a part of it
1753# Takes database handle, export type, optional arguments depending on type
1754# Writes zone data to targets as appropriate for type
1755sub export {
1756 my $dbh = shift;
1757 my $target = shift;
1758
1759 if ($target eq 'tiny') {
1760 __export_tiny($dbh,@_);
1761 }
1762# elsif ($target eq 'foo') {
1763# __export_foo($dbh,@_);
1764#}
1765# etc
1766
1767} # end export()
1768
1769
1770## DNSDB::__export_tiny
1771# Internal sub to implement tinyDNS (compatible) export
1772# Takes database handle, filehandle to write export to, optional argument(s)
1773# to determine which data gets exported
1774sub __export_tiny {
1775 my $dbh = shift;
1776 my $datafile = shift;
1777
1778##fixme: slurp up further options to specify particular zone(s) to export
1779
1780 ## Convert a bare number into an octal-coded pair of octets.
1781 # Take optional arg to indicate a decimal or hex input. Defaults to hex.
1782 sub octalize {
1783 my $tmp = shift;
1784 my $srctype = shift || 'h'; # default assumes hex string
1785 $tmp = sprintf "%0.4x", hex($tmp) if $srctype eq 'h'; # 0-pad hex to 4 digits
1786 $tmp = sprintf "%0.4x", $tmp if $srctype eq 'd'; # 0-pad decimal to 4 hex digits
1787 my @o = ($tmp =~ /^(..)(..)$/); # split into octets
1788 return sprintf "\\%0.3o\\%0.3o", hex($o[0]), hex($o[1]);;
1789 }
1790
1791##fixme: fail if $datafile isn't an open, writable file
1792
1793 # easy case - export all evarything
1794 # not-so-easy case - export item(s) specified
1795 # todo: figure out what kind of list we use to export items
1796
1797 my $domsth = $dbh->prepare("SELECT domain_id,domain,status FROM domains WHERE status=1");
1798 my $recsth = $dbh->prepare("SELECT host,type,val,distance,weight,port,ttl ".
1799 "FROM records WHERE domain_id=?");
1800 $domsth->execute();
1801 while (my ($domid,$dom,$domstat) = $domsth->fetchrow_array) {
1802 $recsth->execute($domid);
1803 while (my ($host,$type,$val,$dist,$weight,$port,$ttl) = $recsth->fetchrow_array) {
1804##fixme: need to store location in the db, and retrieve it here.
1805# temporarily hardcoded to empty so we can include it further down.
1806my $loc = '';
1807
1808##fixme: record validity timestamp. tinydns supports fiddling with timestamps.
1809# note $ttl must be set to 0 if we want to use tinydns's auto-expiring timestamps.
1810# timestamps are TAI64
1811# ~~ 2^62 + time()
1812my $stamp = '';
1813
1814# raw packet in unknown format: first byte indicates length
1815# of remaining data, allows up to 255 raw bytes
1816
1817##fixme? append . to all host/val hostnames
1818 if ($typemap{$type} eq 'SOA') {
1819
1820 # host contains pri-ns:responsible
1821 # val is abused to contain refresh:retry:expire:minttl
1822##fixme: "manual" serial vs tinydns-autoserial
1823 print $datafile "Z$host"."::$val:$ttl:$stamp:$loc\n";
1824
1825 } elsif ($typemap{$type} eq 'A') {
1826
1827 print $datafile "+$host:$val:$ttl:$stamp:$loc\n";
1828
1829 } elsif ($typemap{$type} eq 'NS') {
1830
1831 print $datafile "\&$host"."::$val:$ttl:$stamp:$loc\n";
1832
1833 } elsif ($typemap{$type} eq 'AAAA') {
1834
1835 print $datafile ":$host:28:";
1836 my $altgrp = 0;
1837 my @altconv;
1838 # Split in to up to 8 groups of hex digits (allows for IPv6 :: 0-collapsing)
1839 foreach (split /:/, $val) {
1840 if (/^$/) {
1841 # flag blank entry; this is a series of 0's of (currently) unknown length
1842 $altconv[$altgrp++] = 's';
1843 } else {
1844 # call sub to convert 1-4 hex digits to 2 string-rep octal bytes
1845 $altconv[$altgrp++] = octalize($_)
1846 }
1847 }
1848 foreach my $octet (@altconv) {
1849 # if not 's', output
1850 print $datafile $octet unless $octet =~ /^s$/;
1851 # if 's', output (9-array length)x literal '\000\000'
1852 print $datafile '\000\000'x(9-$altgrp) if $octet =~ /^s$/;
1853 }
1854 print $datafile ":$ttl:$stamp:$loc\n";
1855
1856 } elsif ($typemap{$type} eq 'MX') {
1857
1858 print $datafile "\@$host"."::$val:$dist:$ttl:$stamp:$loc\n";
1859
1860 } elsif ($typemap{$type} eq 'TXT') {
1861
1862##fixme: split v-e-r-y long TXT strings? will need to do so for BIND export, at least
1863 $val =~ s/:/\\072/g; # may need to replace other symbols
1864 print $datafile "'$host:$val:$ttl:$stamp:$loc\n";
1865
1866# by-hand TXT
1867#:deepnet.cx:16:2v\075spf1\040a\040a\072bacon.deepnet.cx\040a\072home.deepnet.cx\040-all:3600
1868#@ IN TXT "v=spf1 a a:bacon.deepnet.cx a:home.deepnet.cx -all"
1869#'deepnet.cx:v=spf1 a a\072bacon.deepnet.cx a\072home.deepnet.cx -all:3600
1870
1871#txttest IN TXT "v=foo bar:bob kn;ob' \" !@#$%^&*()-=_+[]{}<>?"
1872#:txttest.deepnet.cx:16:\054v\075foo\040bar\072bob\040kn\073ob\047\040\042\040\041\100\043\044\045\136\046\052\050\051-\075\137\053\133\135\173\175\074\076\077:3600
1873
1874# very long TXT record as brought in by axfr-get
1875# note tinydns does not support >512-byte RR data, need axfr-dns (for TCP support) for that
1876# also note, tinydns does not seem to support <512, >256-byte RRdata from axfr-get either. :/
1877#:longtxt.deepnet.cx:16:
1878#\170this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
1879#\263 it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record.
1880#\351 it is really long. long. very long. really very long.this is a very long txt record. it is really long. long. very long. really very long. this is a very long txt record. it is really long. long. very long. really very long.
1881#:3600
1882
1883 } elsif ($typemap{$type} eq 'CNAME') {
1884
1885 print $datafile "C$host:$val:$ttl:$stamp:$loc\n";
1886
1887 } elsif ($typemap{$type} eq 'SRV') {
1888
1889 # data is two-byte values for priority, weight, port, in that order,
1890 # followed by length/string data
1891
1892 print $datafile ":$host:33:".octalize($dist,'d').octalize($weight,'d').octalize($port,'d');
1893
1894 $val .= '.' if $val !~ /\.$/;
1895 foreach (split /\./, $val) {
1896 printf $datafile "\\%0.3o%s", length($_), $_;
1897 }
1898 print $datafile "\\000:$ttl:$stamp:$loc\n";
1899
1900 } elsif ($typemap{$type} eq 'RP') {
1901
1902 # RP consists of two mostly free-form strings.
1903 # The first is supposed to be an email address with @ replaced by . (as with the SOA contact)
1904 # The second is the "hostname" of a TXT record with more info.
1905 print $datafile ":$host:17:";
1906 my ($who,$what) = split /\s/, $val;
1907 foreach (split /\./, $who) {
1908 printf $datafile "\\%0.3o%s", length($_), $_;
1909 }
1910 print $datafile '\000';
1911 foreach (split /\./, $what) {
1912 printf $datafile "\\%0.3o%s", length($_), $_;
1913 }
1914 print $datafile "\\000:$ttl:$stamp:$loc\n";
1915
1916 } elsif ($typemap{$type} eq 'PTR') {
1917
1918 # must handle both IPv4 and IPv6
1919##work
1920 # data should already be in suitable reverse order.
1921 print $datafile "^$host:$val:$ttl:$stamp:$loc\n";
1922
1923 } else {
1924 # raw record. we don't know what's in here, so we ASS-U-ME the user has
1925 # put it in correctly, since either the user is messing directly with the
1926 # database, or the record was imported via AXFR
1927 # <split by char>
1928 # convert anything not a-zA-Z0-9.- to octal coding
1929
1930##fixme: add flag to export "unknown" record types - note we'll probably end up
1931# mangling them since they were written to the DB from Net::DNS::RR::<type>->rdatastr.
1932 #print $datafile ":$host:$type:$val:$ttl:$stamp:$loc\n";
1933
1934 } # record type if-else
1935
1936 } # while ($recsth)
1937 } # while ($domsth)
1938} # end __export_tiny()
1939
1940
1941# shut Perl up
19421;
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