1 package C4::Auth_with_ldap;
3 # Copyright 2000-2002 Katipo Communications
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
24 use C4::Members::Messaging;
25 use C4::Auth qw(checkpw_internal);
27 use Koha::AuthUtils qw(hash_password);
28 use List::MoreUtils qw( any );
30 use Net::LDAP::Filter;
32 use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
37 @EXPORT = qw( checkpw_ldap );
40 # Redefine checkpw_ldap:
41 # connect to LDAP (named or anonymous)
42 # ~ retrieves $userid from KOHA_CONF mapping
43 # ~ then compares $password with userPassword
44 # ~ then gets the LDAP entry
45 # ~ and calls the memberadd if necessary
47 sub ldapserver_error {
48 return sprintf('No ldapserver "%s" defined in KOHA_CONF: ' . $ENV{KOHA_CONF}, shift);
51 use vars qw($mapping @ldaphosts $base $ldapname $ldappassword);
52 my $ldap = C4::Context->config("ldapserver") or die 'No "ldapserver" in server hash from KOHA_CONF: ' . $ENV{KOHA_CONF};
53 # since Bug 28278 we need to skip id in <ldapserver id="ldapserver"> which generates additional hash level
54 if ( exists $ldap->{ldapserver} ) {
55 $ldap = $ldap->{ldapserver} or die ldapserver_error('id="ldapserver"');
57 my $prefhost = $ldap->{hostname} or die ldapserver_error('hostname');
58 my $base = $ldap->{base} or die ldapserver_error('base');
59 $ldapname = $ldap->{user} ;
60 $ldappassword = $ldap->{pass} ;
61 our %mapping = %{$ldap->{mapping}}; # FIXME dpavlin -- don't die because of || (); from 6eaf8511c70eb82d797c941ef528f4310a15e9f9
62 my @mapkeys = keys %mapping;
63 #warn "Got ", scalar(@mapkeys), " ldap mapkeys ( total ): ", join ' ', @mapkeys, "\n";
64 @mapkeys = grep {defined $mapping{$_}->{is}} @mapkeys;
65 #warn "Got ", scalar(@mapkeys), " ldap mapkeys (populated): ", join ' ', @mapkeys, "\n";
67 my %categorycode_conversions;
68 my $default_categorycode;
69 if(defined $ldap->{categorycode_mapping}) {
70 $default_categorycode = $ldap->{categorycode_mapping}->{default};
71 foreach my $cat (@{$ldap->{categorycode_mapping}->{categorycode}}) {
72 $categorycode_conversions{$cat->{value}} = $cat->{content};
77 anonymous => defined ($ldap->{anonymous_bind}) ? $ldap->{anonymous_bind} : 1,
78 replicate => defined($ldap->{replicate}) ? $ldap->{replicate} : 1, # add from LDAP to Koha database for new user
79 update => defined($ldap->{update} ) ? $ldap->{update} : 1, # update from LDAP to Koha database for existing user
83 my $result = shift or return;
84 return "LDAP error #" . $result->code
85 . ": " . $result->error_name . "\n"
86 . "# " . $result->error_text . "\n";
90 my $db = shift or return;
91 my $userid = shift or return;
92 my $uid_field = $mapping{userid}->{is} or die ldapserver_error("mapping for 'userid'");
93 my $filter = Net::LDAP::Filter->new("$uid_field=$userid") or die "Failed to create new Net::LDAP::Filter";
94 my $search = $db->search(
99 die "LDAP search failed to return object : " . $search->error if $search->code;
101 my $count = $search->count;
102 if ($search->code > 0) {
103 warn sprintf("LDAP Auth rejected : %s gets %d hits\n", $filter->as_string, $count) . description($search);
107 warn sprintf("LDAP Auth rejected : search with filter '%s' returns no hit\n", $filter->as_string);
114 my ($dbh, $userid, $password) = @_;
115 my @hosts = split(',', $prefhost);
116 my $db = Net::LDAP->new(\@hosts);
118 warn "LDAP connexion failed";
124 # first, LDAP authentication
125 if ( $ldap->{auth_by_bind} ) {
127 if ( $config{anonymous} ) {
129 # Perform an anonymous bind
132 warn "Anonymous LDAP bind failed: " . description($res);
136 # Perform a LDAP search for the given username
137 my $search = search_method( $db, $userid )
138 or return 0; # warnings are in the sub
139 $userldapentry = $search->shift_entry;
140 $principal_name = $userldapentry->dn;
143 $principal_name = $ldap->{principal_name};
144 if ( $principal_name and $principal_name =~ /\%/ ) {
145 $principal_name = sprintf( $principal_name, $userid );
148 $principal_name = $userid;
152 # Perform a LDAP bind for the given username using the matched DN
153 my $res = $db->bind( $principal_name, password => $password );
155 if ( $config{anonymous} ) {
156 # With anonymous_bind approach we can be sure we have found the correct user
157 # and that any 'code' response indicates a 'bad' user (be that blocked, banned
158 # or password changed). We should not fall back to local accounts in this case.
159 warn "LDAP bind failed as kohauser $userid: " . description($res);
162 # Without a anonymous_bind, we cannot be sure we are looking at a valid ldap user
163 # at all, and thus we should fall back to local logins to restore previous behaviour
165 warn "LDAP bind failed as kohauser $userid: " . description($res);
169 if ( !defined($userldapentry)
170 && ( $config{update} or $config{replicate} ) )
172 my $search = search_method( $db, $userid ) or return 0;
173 $userldapentry = $search->shift_entry;
176 my $res = ($config{anonymous}) ? $db->bind : $db->bind($ldapname, password=>$ldappassword);
177 if ($res->code) { # connection refused
178 warn "LDAP bind failed as ldapuser " . ($ldapname || '[ANONYMOUS]') . ": " . description($res);
181 my $search = search_method($db, $userid) or return 0; # warnings are in the sub
182 # Handle multiple branches. Same login exists several times in different branches.
184 while (my $entry = $search->shift_entry) {
185 my $user_ldap_bind_ret = $db->bind($entry->dn, password => $password);
186 unless ($user_ldap_bind_ret->code) {
187 $userldapentry = $entry;
194 warn "LDAP Auth rejected : invalid password for user '$userid'.";
201 # To get here, LDAP has accepted our user's login attempt.
202 # But we still have work to do. See perldoc below for detailed breakdown.
205 my ($borrowernumber,$cardnumber,$local_userid,$savedpw) = exists_local($userid);
207 if (( $borrowernumber and $config{update} ) or
208 (!$borrowernumber and $config{replicate}) ) {
209 %borrower = ldap_entry_2_hash($userldapentry,$userid);
210 #warn "checkpw_ldap received \%borrower w/ " . keys(%borrower), " keys: ", join(' ', keys %borrower), "\n";
213 if ($borrowernumber) {
214 if ($config{update}) { # A1, B1
215 my $c2 = &update_local($local_userid,$password,$borrowernumber,\%borrower) || '';
216 ($cardnumber eq $c2) or warn "update_local returned cardnumber '$c2' instead of '$cardnumber'";
218 # maybe update just the password?
219 return(1, $cardnumber, $local_userid);
221 } elsif ($config{replicate}) { # A2, C2
222 my @columns = Koha::Patrons->columns;
223 my $patron = Koha::Patron->new(
225 map { exists( $borrower{$_} ) ? ( $_ => $borrower{$_} ) : () } @columns
228 die "Insert of new patron failed" unless $patron;
229 $borrowernumber = $patron->borrowernumber;
230 C4::Members::Messaging::SetMessagingPreferencesFromDefaults( { borrowernumber => $borrowernumber, categorycode => $borrower{'categorycode'} } );
234 if (C4::Context->preference('ExtendedPatronAttributes') && $borrowernumber && ($config{update} ||$config{replicate})) {
235 my $library_id = C4::Context->userenv ? C4::Context->userenv->{'branch'} : undef;
236 my $attribute_types = Koha::Patron::Attribute::Types->search_with_library_limits({}, {}, $library_id);
237 while ( my $attribute_type = $attribute_types->next ) {
238 my $code = $attribute_type->code;
239 unless (exists($borrower{$code}) && $borrower{$code} !~ m/^\s*$/ ) {
242 my $patron = Koha::Patrons->find($borrowernumber);
243 if ( $patron ) { # Should not be needed, but we are in C4::Auth LDAP...
245 my $attribute = Koha::Patron::Attribute->new({code => $code, attribute => $borrower{$code}});
246 $patron->extended_attributes([$attribute->unblessed]);
248 if ($@) { # FIXME Test if Koha::Exceptions::Patron::Attribute::NonRepeatable
249 warn "ERROR_extended_unique_id_failed $code $borrower{$code}";
254 return(1, $cardnumber, $userid);
257 # Pass LDAP entry object and local cardnumber (userid).
258 # Returns borrower hash.
259 # Edit KOHA_CONF so $memberhash{'xxx'} fits your ldap structure.
260 # Ensure that mandatory fields are correctly filled!
262 sub ldap_entry_2_hash {
263 my $userldapentry = shift;
264 my %borrower = ( cardnumber => shift );
266 $userldapentry->exists('uid'); # This is bad, but required! By side-effect, this initializes the attrs hash.
267 #foreach (keys %$userldapentry) {
268 # print STDERR "\n\nLDAP key: $_\t", sprintf('(%s)', ref $userldapentry->{$_}), "\n";
270 my $x = $userldapentry->{attrs} or return;
272 $memberhash{$_} = join ' ', @{$x->{$_}};
273 #warn sprintf("building \$memberhash{%s} = ", $_, join(' ', @{$x->{$_}})), "\n";
275 #warn "Finished \%memberhash has ", scalar(keys %memberhash), " keys\n", "Referencing \%mapping with ", scalar(keys %mapping), " keys\n";
276 foreach my $key (keys %mapping) {
277 my $data = $memberhash{ lc($mapping{$key}->{is}) }; # Net::LDAP returns all names in lowercase
278 #warn "mapping %20s ==> %-20s (%s)\n", $key, $mapping{$key}->{is}, $data;
279 unless (defined $data) {
280 $data = $mapping{$key}->{content} || undef;
282 $borrower{$key} = $data;
284 $borrower{initials} = $memberhash{initials} ||
285 ( substr($borrower{'firstname'},0,1)
286 . substr($borrower{ 'surname' },0,1)
289 # categorycode conversions
290 if(defined $categorycode_conversions{$borrower{categorycode}}) {
291 $borrower{categorycode} = $categorycode_conversions{$borrower{categorycode}};
293 elsif($default_categorycode) {
294 $borrower{categorycode} = $default_categorycode;
297 # check if categorycode exists, if not, fallback to default from koha-conf.xml
298 my $dbh = C4::Context->dbh;
299 my $sth = $dbh->prepare("SELECT categorycode FROM categories WHERE categorycode = ?");
300 $sth->execute( uc($borrower{'categorycode'}) );
301 unless ( my $row = $sth->fetchrow_hashref ) {
302 my $default = $mapping{'categorycode'}->{content};
303 #warn "Can't find ", $borrower{'categorycode'}, " default to: $default for ", $borrower{userid};
304 $borrower{'categorycode'} = $default
312 my $dbh = C4::Context->dbh;
313 my $select = "SELECT borrowernumber,cardnumber,userid,password FROM borrowers ";
315 my $sth = $dbh->prepare("$select WHERE userid=?"); # was cardnumber=?
317 #warn "Userid '$arg' exists_local? %s\n", $sth->rows;
318 ($sth->rows == 1) and return $sth->fetchrow;
320 $sth = $dbh->prepare("$select WHERE cardnumber=?");
322 #warn "Cardnumber '$arg' exists_local? %s\n", $sth->rows;
323 ($sth->rows == 1) and return $sth->fetchrow;
327 # This function performs a password update, given the userid, borrowerid,
328 # and digested password. It will verify that things are correct and return the
329 # borrowers cardnumber. The idea is that it is used to keep the local
330 # passwords in sync with the LDAP passwords.
332 # $cardnum = _do_changepassword($userid, $borrowerid, $digest)
334 # Note: if the LDAP config has the update_password tag set to a false value,
335 # then this will not update the password, it will simply return the cardnumber.
336 sub _do_changepassword {
337 my ($userid, $borrowerid, $password) = @_;
339 if ( exists( $ldap->{update_password} ) && !$ldap->{update_password} ) {
341 # We don't store the password in the database
342 my $sth = C4::Context->dbh->prepare(
343 'SELECT cardnumber FROM borrowers WHERE borrowernumber=?');
344 $sth->execute($borrowerid);
345 die "Unable to access borrowernumber "
346 . "with userid=$userid, "
347 . "borrowernumber=$borrowerid"
349 my ($cardnum) = $sth->fetchrow;
350 $sth = C4::Context->dbh->prepare(
351 'UPDATE borrowers SET password = null WHERE borrowernumber=?');
352 $sth->execute($borrowerid);
356 my $digest = hash_password($password);
357 #warn "changing local password for borrowernumber=$borrowerid to '$digest'\n";
358 Koha::Patrons->find($borrowerid)->set_password({ password => $password, skip_validation => 1 });
360 my ($ok, $cardnum) = checkpw_internal(C4::Context->dbh, $userid, $password);
361 return $cardnum if $ok;
363 warn "Password mismatch after update to borrowernumber=$borrowerid";
368 my $userid = shift or croak "No userid";
369 my $password = shift or croak "No password";
370 my $borrowerid = shift or croak "No borrowerid";
371 my $borrower = shift or croak "No borrower record";
373 # skip extended patron attributes in 'borrowers' attribute update
374 my @keys = keys %$borrower;
375 if (C4::Context->preference('ExtendedPatronAttributes')) {
376 my $library_id = C4::Context->userenv ? C4::Context->userenv->{'branch'} : undef;
377 my $attribute_types = Koha::Patron::Attribute::Types->search_with_library_limits({}, {}, $library_id);
378 while ( my $attribute_type = $attribute_types->next ) {
379 my $code = $attribute_type->code;
380 @keys = grep { $_ ne $code } @keys;
381 #warn "ignoring extended patron attribute '%s' in update_local()\n", $code;
385 my $dbh = C4::Context->dbh;
386 my $query = "UPDATE borrowers\nSET " .
387 join(',', map {"$_=?"} @keys) .
388 "\nWHERE borrowernumber=? ";
389 my $sth = $dbh->prepare($query);
390 #warn $query, "\n", join "\n", map {"$_ = '" . $borrower->{$_} . "'"} @keys;
391 #warn "\nuserid = $userid\n";
393 ((map {$borrower->{$_}} @keys), $borrowerid)
396 # MODIFY PASSWORD/LOGIN if password was mapped
397 _do_changepassword($userid, $borrowerid, $password) if exists( $borrower->{'password'} );
405 C4::Auth - Authenticates Koha users
409 use C4::Auth_with_ldap;
411 =head1 LDAP Configuration
413 This module is specific to LDAP authentification. It requires Net::LDAP package and one or more
414 working LDAP servers.
416 * Modify ldapserver element in KOHA_CONF
417 * Establish field mapping in <mapping> element.
419 For example, if your user records are stored according to the inetOrgPerson schema, RFC#2798,
420 the username would match the "uid" field, and the password should match the "userpassword" field.
422 Make sure that ALL required fields are populated by your LDAP database (and mapped in KOHA_CONF).
423 What are the required fields? Well, in mysql you can check the database table "borrowers" like this:
425 mysql> show COLUMNS from borrowers;
426 +---------------------+--------------+------+-----+---------+----------------+
427 | Field | Type | Null | Key | Default | Extra |
428 +---------------------+--------------+------+-----+---------+----------------+
429 | borrowernumber | int(11) | NO | PRI | NULL | auto_increment |
430 | cardnumber | varchar(16) | YES | UNI | NULL | |
431 | surname | mediumtext | NO | | NULL | |
432 | firstname | text | YES | | NULL | |
433 | title | mediumtext | YES | | NULL | |
434 | othernames | mediumtext | YES | | NULL | |
435 | initials | text | YES | | NULL | |
436 | streetnumber | varchar(10) | YES | | NULL | |
437 | streettype | varchar(50) | YES | | NULL | |
438 | address | mediumtext | NO | | NULL | |
439 | address2 | text | YES | | NULL | |
440 | city | mediumtext | NO | | NULL | |
441 | state | mediumtext | YES | | NULL | |
442 | zipcode | varchar(25) | YES | | NULL | |
443 | country | text | YES | | NULL | |
444 | email | mediumtext | YES | | NULL | |
445 | phone | text | YES | | NULL | |
446 | mobile | varchar(50) | YES | | NULL | |
447 | fax | mediumtext | YES | | NULL | |
448 | emailpro | text | YES | | NULL | |
449 | phonepro | text | YES | | NULL | |
450 | B_streetnumber | varchar(10) | YES | | NULL | |
451 | B_streettype | varchar(50) | YES | | NULL | |
452 | B_address | varchar(100) | YES | | NULL | |
453 | B_address2 | text | YES | | NULL | |
454 | B_city | mediumtext | YES | | NULL | |
455 | B_state | mediumtext | YES | | NULL | |
456 | B_zipcode | varchar(25) | YES | | NULL | |
457 | B_country | text | YES | | NULL | |
458 | B_email | text | YES | | NULL | |
459 | B_phone | mediumtext | YES | | NULL | |
460 | dateofbirth | date | YES | | NULL | |
461 | branchcode | varchar(10) | NO | MUL | | |
462 | categorycode | varchar(10) | NO | MUL | | |
463 | dateenrolled | date | YES | | NULL | |
464 | dateexpiry | date | YES | | NULL | |
465 | gonenoaddress | tinyint(1) | YES | | NULL | |
466 | lost | tinyint(1) | YES | | NULL | |
467 | debarred | date | YES | | NULL | |
468 | debarredcomment | varchar(255) | YES | | NULL | |
469 | contactname | mediumtext | YES | | NULL | |
470 | contactfirstname | text | YES | | NULL | |
471 | contacttitle | text | YES | | NULL | |
472 | borrowernotes | mediumtext | YES | | NULL | |
473 | relationship | varchar(100) | YES | | NULL | |
474 | ethnicity | varchar(50) | YES | | NULL | |
475 | ethnotes | varchar(255) | YES | | NULL | |
476 | sex | varchar(1) | YES | | NULL | |
477 | password | varchar(30) | YES | | NULL | |
478 | flags | int(11) | YES | | NULL | |
479 | userid | varchar(30) | YES | MUL | NULL | |
480 | opacnote | mediumtext | YES | | NULL | |
481 | contactnote | varchar(255) | YES | | NULL | |
482 | sort1 | varchar(80) | YES | | NULL | |
483 | sort2 | varchar(80) | YES | | NULL | |
484 | altcontactfirstname | varchar(255) | YES | | NULL | |
485 | altcontactsurname | varchar(255) | YES | | NULL | |
486 | altcontactaddress1 | varchar(255) | YES | | NULL | |
487 | altcontactaddress2 | varchar(255) | YES | | NULL | |
488 | altcontactaddress3 | varchar(255) | YES | | NULL | |
489 | altcontactstate | mediumtext | YES | | NULL | |
490 | altcontactzipcode | varchar(50) | YES | | NULL | |
491 | altcontactcountry | text | YES | | NULL | |
492 | altcontactphone | varchar(50) | YES | | NULL | |
493 | smsalertnumber | varchar(50) | YES | | NULL | |
494 | privacy | int(11) | NO | | 1 | |
495 +---------------------+--------------+------+-----+---------+----------------+
496 66 rows in set (0.00 sec)
497 Where Null="NO", the field is required.
499 =head1 KOHA_CONF and field mapping
501 Example XML stanza for LDAP configuration in KOHA_CONF.
505 <useldapserver>1</useldapserver>
506 <!-- LDAP SERVER (optional) -->
507 <ldapserver id="ldapserver">
508 <hostname>localhost</hostname>
509 <base>dc=metavore,dc=com</base>
510 <user>cn=Manager,dc=metavore,dc=com</user> <!-- DN, if not anonymous -->
511 <pass>metavore</pass> <!-- password, if not anonymous -->
512 <replicate>1</replicate> <!-- add new users from LDAP to Koha database -->
513 <update>1</update> <!-- update existing users in Koha database -->
514 <auth_by_bind>0</auth_by_bind> <!-- set to 1 to authenticate by binding instead of
515 password comparison, e.g., to use Active Directory -->
516 <anonymous_bind>0</anonymous_bind> <!-- set to 1 if users should be searched using
517 an anonymous bind, even when auth_by_bind is on -->
518 <principal_name>%s@my_domain.com</principal_name>
519 <!-- optional, for auth_by_bind: a printf format to make userPrincipalName from koha userid.
520 Not used with anonymous_bind. -->
521 <update_password>1</update_password> <!-- set to 0 if you don't want LDAP passwords
522 synced to the local database -->
523 <mapping> <!-- match koha SQL field names to your LDAP record field names -->
524 <firstname is="givenname" ></firstname>
525 <surname is="sn" ></surname>
526 <address is="postaladdress" ></address>
527 <city is="l" >Athens, OH</city>
528 <zipcode is="postalcode" ></zipcode>
529 <branchcode is="branch" >MAIN</branchcode>
530 <userid is="uid" ></userid>
531 <password is="userpassword" ></password>
532 <email is="mail" ></email>
533 <categorycode is="employeetype" >PT</categorycode>
534 <phone is="telephonenumber"></phone>
539 The <mapping> subelements establish the relationship between mysql fields and LDAP attributes. The element name
540 is the column in mysql, with the "is" characteristic set to the LDAP attribute name. Optionally, any content
541 between the element tags is taken as the default value. In this example, the default categorycode is "PT" (for
546 Once a user has been accepted by the LDAP server, there are several possibilities for how Koha will behave, depending on
547 your configuration and the presence of a matching Koha user in your local DB:
550 OPTION UPDATE REPLICATE EXISTS? RESULT
551 A1 1 1 1 OK : We're updating them anyway.
552 A2 1 1 0 OK : We're adding them anyway.
553 B1 1 0 1 OK : We update them.
554 B2 1 0 0 FAIL: We cannot add new user.
555 C1 0 1 1 OK : We do nothing. (maybe should update password?)
556 C2 0 1 0 OK : We add the new user.
557 D1 0 0 1 OK : We do nothing. (maybe should update password?)
558 D2 0 0 0 FAIL: We cannot add new user.
560 Note: failure here just means that Koha will fallback to checking the local DB. That is, a given user could login with
561 their LDAP password OR their local one. If this is a problem, then you should enable update and supply a mapping for
562 password. Then the local value will be updated at successful LDAP login and the passwords will be synced.
564 If you choose NOT to update local users, the borrowers table will not be affected at all.
565 Note that this means that patron passwords may appear to change if LDAP is ever disabled, because
566 the local table never contained the LDAP values.
570 Binds as the user instead of retrieving their record. Recommended if update disabled.
572 =head2 principal_name
574 Provides an optional sprintf-style format for manipulating the userid before the bind.
575 Even though the userPrincipalName is one intended target, any uniquely identifying
576 attribute that the server allows to be used for binding could be used.
578 Currently, principal_name only operates when auth_by_bind is enabled.
580 =head2 update_password
582 If this tag is left out or set to a true value, then the user's LDAP password
583 will be stored (hashed) in the local Koha database. If you don't want this
584 to happen, then set the value of this to '0'. Note that if passwords are not
585 stored locally, and the connection to the LDAP system fails, then the users
586 will not be able to log in at all.
588 =head2 Active Directory
590 The auth_by_bind and principal_name settings are recommended for Active Directory.
592 Under default Active Directory rules, we cannot determine the distinguishedName attribute from the Koha userid as reliably as
593 we would typically under openldap. Instead of:
595 distinguishedName: CN=barnes.7,DC=my_company,DC=com
599 distinguishedName: CN=Barnes\, Jim,OU=Test Accounts,OU=User Accounts,DC=my_company,DC=com
601 Matching that would require us to know more info about the account (firstname, surname) and to include punctuation and whitespace
602 in Koha userids. But the userPrincipalName should be consistent, something like:
604 userPrincipalName: barnes.7@my_company.com
606 Therefore it is often easier to bind to Active Directory with userPrincipalName, effectively the
607 canonical email address for that user, or what it would be if email were enabled for them. If Koha userid values
608 will match the username portion of the userPrincipalName, and the domain suffix is the same for all users, then use principal_name
610 <principal_name>%s@core.my_company.com</principal_name>
612 The user of the previous example, barnes.7, would then attempt to bind as:
613 barnes.7@core.my_company.com
629 # For reference, here's an important difference in the data structure we rely on.
630 # ========================================
631 # Using attrs instead of {asn}->attributes
632 # ========================================
634 # LDAP key: ->{ cn} = ARRAY w/ 3 members.
635 # LDAP key: ->{ cn}->{ sss} = sss
636 # LDAP key: ->{ cn}->{ Steve Smith} = Steve Smith
637 # LDAP key: ->{ cn}->{Steve S. Smith} = Steve S. Smith
639 # LDAP key: ->{ givenname} = ARRAY w/ 1 members.
640 # LDAP key: ->{ givenname}->{Steve} = Steve