Commit | Line | Data |
f66d606b |
1 | |
2 | =pod |
3 | |
4 | =head1 NAME |
5 | |
6 | Catalyst::Authentication::Store::LDAP::Backend |
7 | - LDAP authentication storage backend. |
8 | |
9 | =head1 SYNOPSIS |
10 | |
11 | # you probably just want Store::LDAP under most cases, |
12 | # but if you insist you can instantiate your own store: |
13 | |
14 | use Catalyst::Authentication::Store::LDAP::Backend; |
15 | |
16 | use Catalyst qw/ |
17 | Authentication |
18 | Authentication::Credential::Password |
19 | /; |
20 | |
21 | my %config = ( |
22 | 'ldap_server' => 'ldap1.yourcompany.com', |
23 | 'ldap_server_options' => { |
24 | 'timeout' => 30, |
25 | }, |
26 | 'binddn' => 'anonymous', |
27 | 'bindpw' => 'dontcarehow', |
28 | 'start_tls' => 1, |
29 | 'start_tls_options' => { |
30 | 'verify' => 'none', |
31 | }, |
32 | 'user_basedn' => 'ou=people,dc=yourcompany,dc=com', |
33 | 'user_filter' => '(&(objectClass=posixAccount)(uid=%s))', |
34 | 'user_scope' => 'one', |
35 | 'user_field' => 'uid', |
36 | 'user_search_options' => { |
37 | 'deref' => 'always', |
38 | }, |
1647b33a |
39 | 'user_results_filter' => sub { return shift->pop_entry }, |
f66d606b |
40 | 'entry_class' => 'MyApp::LDAP::Entry', |
405489b5 |
41 | 'user_class' => 'MyUser', |
f66d606b |
42 | 'use_roles' => 1, |
43 | 'role_basedn' => 'ou=groups,dc=yourcompany,dc=com', |
44 | 'role_filter' => '(&(objectClass=posixGroup)(member=%s))', |
45 | 'role_scope' => 'one', |
46 | 'role_field' => 'cn', |
47 | 'role_value' => 'dn', |
48 | 'role_search_options' => { |
49 | 'deref' => 'always', |
50 | }, |
405489b5 |
51 | 'role_search_as_user' => 0, |
f66d606b |
52 | ); |
53 | |
54 | our $users = Catalyst::Authentication::Store::LDAP::Backend->new(\%config); |
55 | |
f66d606b |
56 | =head1 DESCRIPTION |
57 | |
afb8e81c |
58 | You probably want L<Catalyst::Authentication::Store::LDAP>. |
f66d606b |
59 | |
afb8e81c |
60 | Otherwise, this lets you create a store manually. |
f66d606b |
61 | |
62 | See the L<Catalyst::Authentication::Store::LDAP> documentation for |
63 | an explanation of the configuration options. |
64 | |
65 | =head1 METHODS |
66 | |
67 | =cut |
68 | |
69 | package Catalyst::Authentication::Store::LDAP::Backend; |
70 | use base qw( Class::Accessor::Fast ); |
71 | |
72 | use strict; |
73 | use warnings; |
74 | |
d94851da |
75 | our $VERSION = '0.1005'; |
f66d606b |
76 | |
77 | use Catalyst::Authentication::Store::LDAP::User; |
78 | use Net::LDAP; |
405489b5 |
79 | use Catalyst::Utils (); |
f66d606b |
80 | |
81 | BEGIN { |
82 | __PACKAGE__->mk_accessors( |
83 | qw( ldap_server ldap_server_options binddn |
84 | bindpw entry_class user_search_options |
85 | user_filter user_basedn user_scope |
86 | user_attrs user_field use_roles role_basedn |
87 | role_filter role_scope role_field role_value |
88 | role_search_options start_tls start_tls_options |
405489b5 |
89 | user_results_filter user_class role_search_as_user |
f66d606b |
90 | ) |
91 | ); |
92 | } |
93 | |
94 | =head2 new($config) |
95 | |
96 | Creates a new L<Catalyst::Authentication::Store::LDAP::Backend> object. |
97 | $config should be a hashref, which should contain the configuration options |
98 | listed in L<Catalyst::Authentication::Store::LDAP>'s documentation. |
99 | |
100 | Also sets a few sensible defaults. |
101 | |
102 | =cut |
103 | |
104 | sub new { |
105 | my ( $class, $config ) = @_; |
106 | |
107 | unless ( defined($config) && ref($config) eq "HASH" ) { |
108 | Catalyst::Exception->throw( |
109 | "Catalyst::Authentication::Store::LDAP::Backend needs to be configured with a hashref." |
110 | ); |
111 | } |
112 | my %config_hash = %{$config}; |
113 | $config_hash{'binddn'} ||= 'anonymous'; |
114 | $config_hash{'user_filter'} ||= '(uid=%s)'; |
115 | $config_hash{'user_scope'} ||= 'sub'; |
116 | $config_hash{'user_field'} ||= 'uid'; |
117 | $config_hash{'role_filter'} ||= '(memberUid=%s)'; |
118 | $config_hash{'role_scope'} ||= 'sub'; |
119 | $config_hash{'role_field'} ||= 'cn'; |
120 | $config_hash{'use_roles'} ||= '1'; |
121 | $config_hash{'start_tls'} ||= '0'; |
122 | $config_hash{'entry_class'} ||= 'Catalyst::Model::LDAP::Entry'; |
405489b5 |
123 | $config_hash{'user_class'} ||= 'Catalyst::Authentication::Store::LDAP::User'; |
124 | $config_hash{'role_search_as_user'} ||= 0; |
f66d606b |
125 | |
405489b5 |
126 | Catalyst::Utils::ensure_class_loaded($config_hash{'user_class'}); |
f66d606b |
127 | my $self = \%config_hash; |
128 | bless( $self, $class ); |
129 | return $self; |
130 | } |
131 | |
132 | =head2 find_user( I<authinfo> ) |
133 | |
134 | Creates a L<Catalyst::Authentication::Store::LDAP::User> object |
135 | for the given User ID. This is the preferred mechanism for getting a |
136 | given User out of the Store. |
137 | |
138 | I<authinfo> should be a hashref with a key of either C<id> or |
139 | C<username>. The value will be compared against the LDAP C<user_field> field. |
140 | |
141 | =cut |
142 | |
143 | sub find_user { |
144 | my ( $self, $authinfo, $c ) = @_; |
145 | return $self->get_user( $authinfo->{id} || $authinfo->{username} ); |
146 | } |
147 | |
148 | =head2 get_user($id) |
149 | |
150 | Creates a L<Catalyst::Authentication::Store::LDAP::User> object |
151 | for the given User ID. This is the preferred mechanism for getting a |
152 | given User out of the Store. |
153 | |
154 | =cut |
155 | |
156 | sub get_user { |
157 | my ( $self, $id ) = @_; |
405489b5 |
158 | my $user = $self->user_class->new( $self, |
f66d606b |
159 | $self->lookup_user($id) ); |
160 | return $user; |
161 | } |
162 | |
163 | =head2 ldap_connect |
164 | |
165 | Returns a L<Net::LDAP> object, connected to your LDAP server. (According |
166 | to how you configured the Backend, of course) |
167 | |
168 | =cut |
169 | |
170 | sub ldap_connect { |
171 | my ($self) = shift; |
172 | my $ldap; |
173 | if ( defined( $self->ldap_server_options() ) ) { |
174 | $ldap |
175 | = Net::LDAP->new( $self->ldap_server, |
176 | %{ $self->ldap_server_options } ) |
177 | or Catalyst::Exception->throw($@); |
178 | } |
179 | else { |
180 | $ldap = Net::LDAP->new( $self->ldap_server ) |
181 | or Catalyst::Exception->throw($@); |
182 | } |
183 | if ( defined( $self->start_tls ) && $self->start_tls =~ /(1|true)/i ) { |
184 | my $mesg; |
185 | if ( defined( $self->start_tls_options ) ) { |
186 | $mesg = $ldap->start_tls( %{ $self->start_tls_options } ); |
187 | } |
188 | else { |
189 | $mesg = $ldap->start_tls; |
190 | } |
191 | if ( $mesg->is_error ) { |
192 | Catalyst::Exception->throw( "TLS Error: " . $mesg->error ); |
193 | } |
194 | } |
195 | return $ldap; |
196 | } |
197 | |
198 | =head2 ldap_bind($ldap, $binddn, $bindpw) |
199 | |
200 | Bind's to the directory. If $ldap is undef, it will connect to the |
201 | LDAP server first. $binddn should be the DN of the object you wish |
202 | to bind as, and $bindpw the password. |
203 | |
204 | If $binddn is "anonymous", an anonymous bind will be performed. |
205 | |
206 | =cut |
207 | |
208 | sub ldap_bind { |
209 | my ( $self, $ldap, $binddn, $bindpw, $forauth ) = @_; |
210 | $forauth ||= 0; |
211 | $ldap ||= $self->ldap_connect; |
212 | if ( !defined($ldap) ) { |
213 | Catalyst::Exception->throw("LDAP Server undefined!"); |
214 | } |
215 | $binddn ||= $self->binddn; |
216 | $bindpw ||= $self->bindpw; |
217 | if ( $binddn eq "anonymous" ) { |
405489b5 |
218 | $self->_ldap_bind_anon($ldap); |
f66d606b |
219 | } |
220 | else { |
221 | if ($bindpw) { |
222 | my $mesg = $ldap->bind( $binddn, 'password' => $bindpw ); |
223 | if ( $mesg->is_error ) { |
224 | |
225 | # If we're not checking this bind for authentication purposes |
226 | # Go ahead an blow up if we fail. |
227 | if ( $forauth ne 'forauth' ) { |
228 | Catalyst::Exception->throw( |
229 | "Error on Initial Bind: " . $mesg->error ); |
230 | } |
231 | else { |
232 | return undef; |
233 | } |
234 | } |
235 | } |
236 | else { |
405489b5 |
237 | $self->_ldap_bind_anon($ldap, $binddn); |
f66d606b |
238 | } |
239 | } |
240 | return $ldap; |
241 | } |
242 | |
405489b5 |
243 | sub _ldap_bind_anon { |
244 | my ($self, $ldap, $dn) = @_; |
245 | my $mesg = $ldap->bind($dn); |
246 | if ( $mesg->is_error ) { |
247 | Catalyst::Exception->throw( "Error on Bind: " . $mesg->error ); |
248 | } |
249 | } |
250 | |
f66d606b |
251 | =head2 lookup_user($id) |
252 | |
253 | Given a User ID, this method will: |
254 | |
255 | A) Bind to the directory using the configured binddn and bindpw |
256 | B) Perform a search for the User Object in the directory, using |
257 | user_basedn, user_filter, and user_scope. |
d94851da |
258 | C) Assuming we found the object, we will walk it's attributes |
f66d606b |
259 | using L<Net::LDAP::Entry>'s get_value method. We store the |
d94851da |
260 | results in a hashref. If we do not find the object, then |
261 | undef is returned. |
262 | D) Return a hashref that looks like: |
263 | |
f66d606b |
264 | $results = { |
265 | 'ldap_entry' => $entry, # The Net::LDAP::Entry object |
266 | 'attributes' => $attributes, |
267 | } |
268 | |
1647b33a |
269 | This method is usually only called by find_user(). |
f66d606b |
270 | |
271 | =cut |
272 | |
273 | sub lookup_user { |
274 | my ( $self, $id ) = @_; |
275 | |
276 | # No sneaking in wildcards! |
277 | if ( $id =~ /\*/ ) { |
278 | Catalyst::Exception->throw("ID $id contains wildcards!"); |
279 | } |
280 | my $ldap = $self->ldap_bind; |
281 | my @searchopts; |
282 | if ( defined( $self->user_basedn ) ) { |
283 | push( @searchopts, 'base' => $self->user_basedn ); |
284 | } |
285 | else { |
286 | Catalyst::Exception->throw( |
287 | "You must set user_basedn before looking up users!"); |
288 | } |
289 | my $filter = $self->_replace_filter( $self->user_filter, $id ); |
290 | push( @searchopts, 'filter' => $filter ); |
291 | push( @searchopts, 'scope' => $self->user_scope ); |
292 | if ( defined( $self->user_search_options ) ) { |
293 | push( @searchopts, %{ $self->user_search_options } ); |
294 | } |
295 | my $usersearch = $ldap->search(@searchopts); |
d94851da |
296 | |
297 | return if ( $usersearch->is_error ); |
298 | |
f66d606b |
299 | my $userentry; |
1647b33a |
300 | my $user_field = $self->user_field; |
301 | my $results_filter = $self->user_results_filter; |
302 | my $entry; |
303 | if ( defined($results_filter) ) { |
304 | $entry = &$results_filter($usersearch); |
305 | } |
306 | else { |
307 | $entry = $usersearch->pop_entry; |
308 | } |
309 | if ( $usersearch->pop_entry ) { |
310 | Catalyst::Exception->throw( |
311 | "More than one entry matches user search.\n" |
312 | . "Consider defining a user_results_filter sub." ); |
313 | } |
314 | |
315 | # a little extra sanity check with the 'eq' since LDAP already |
316 | # says it matches. |
5772b468 |
317 | # NOTE that Net::LDAP returns exactly what you asked for, but |
318 | # because LDAP is often case insensitive, FoO can match foo |
319 | # and so we normalize with lc(). |
1647b33a |
320 | if ( defined($entry) ) { |
5772b468 |
321 | unless ( lc( $entry->get_value($user_field) ) eq lc($id) ) { |
1647b33a |
322 | Catalyst::Exception->throw( |
323 | "LDAP claims '$user_field' equals '$id' but results entry does not match." |
324 | ); |
f66d606b |
325 | } |
1647b33a |
326 | $userentry = $entry; |
f66d606b |
327 | } |
1647b33a |
328 | |
f66d606b |
329 | $ldap->unbind; |
330 | $ldap->disconnect; |
331 | unless ($userentry) { |
332 | return undef; |
333 | } |
334 | my $attrhash; |
335 | foreach my $attr ( $userentry->attributes ) { |
336 | my @attrvalues = $userentry->get_value($attr); |
337 | if ( scalar(@attrvalues) == 1 ) { |
338 | $attrhash->{ lc($attr) } = $attrvalues[0]; |
339 | } |
340 | else { |
341 | $attrhash->{ lc($attr) } = \@attrvalues; |
342 | } |
343 | } |
405489b5 |
344 | |
345 | eval { Catalyst::Utils::ensure_class_loaded($self->entry_class) }; |
f66d606b |
346 | if ( !$@ ) { |
347 | bless( $userentry, $self->entry_class ); |
348 | $userentry->{_use_unicode}++; |
349 | } |
350 | my $rv = { |
351 | 'ldap_entry' => $userentry, |
352 | 'attributes' => $attrhash, |
353 | }; |
354 | return $rv; |
355 | } |
356 | |
405489b5 |
357 | =head2 lookup_roles($userobj, [$ldap]) |
f66d606b |
358 | |
359 | This method looks up the roles for a given user. It takes a |
360 | L<Catalyst::Authentication::Store::LDAP::User> object |
405489b5 |
361 | as it's first argument, and can optionally take a I<Net::LDAP> object which |
362 | is used rather than the default binding if supplied. |
f66d606b |
363 | |
364 | It returns an array containing the role_field attribute from all the |
365 | objects that match it's criteria. |
366 | |
367 | =cut |
368 | |
369 | sub lookup_roles { |
405489b5 |
370 | my ( $self, $userobj, $ldap ) = @_; |
f66d606b |
371 | if ( $self->use_roles == 0 || $self->use_roles =~ /^false$/i ) { |
372 | return undef; |
373 | } |
405489b5 |
374 | $ldap ||= $self->ldap_bind; |
f66d606b |
375 | my @searchopts; |
376 | if ( defined( $self->role_basedn ) ) { |
377 | push( @searchopts, 'base' => $self->role_basedn ); |
378 | } |
379 | else { |
380 | Catalyst::Exception->throw( |
381 | "You must set up role_basedn before looking up roles!"); |
382 | } |
383 | my $filter_value = $userobj->has_attribute( $self->role_value ); |
384 | if ( !defined($filter_value) ) { |
385 | Catalyst::Exception->throw( "User object " |
386 | . $userobj->username |
387 | . " has no " |
388 | . $self->role_value |
389 | . " attribute, so I can't look up it's roles!" ); |
390 | } |
391 | my $filter = $self->_replace_filter( $self->role_filter, $filter_value ); |
392 | push( @searchopts, 'filter' => $filter ); |
393 | push( @searchopts, 'scope' => $self->role_scope ); |
394 | push( @searchopts, 'attrs' => [ $self->role_field ] ); |
395 | if ( defined( $self->role_search_options ) ) { |
396 | push( @searchopts, %{ $self->role_search_options } ); |
397 | } |
398 | my $rolesearch = $ldap->search(@searchopts); |
399 | my @roles; |
ab62b426 |
400 | RESULT: foreach my $entry ( $rolesearch->entries ) { |
401 | push( @roles, $entry->get_value( $self->role_field ) ); |
f66d606b |
402 | } |
403 | return @roles; |
404 | } |
405 | |
406 | sub _replace_filter { |
407 | my $self = shift; |
408 | my $filter = shift; |
409 | my $replace = shift; |
410 | $filter =~ s/\%s/$replace/g; |
411 | return $filter; |
412 | } |
413 | |
414 | =head2 user_supports |
415 | |
416 | Returns the value of |
417 | Catalyst::Authentication::Store::LDAP::User->supports(@_). |
418 | |
419 | =cut |
420 | |
421 | sub user_supports { |
422 | my $self = shift; |
423 | |
424 | # this can work as a class method |
425 | Catalyst::Authentication::Store::LDAP::User->supports(@_); |
426 | } |
427 | |
428 | =head2 from_session( I<id> ) |
429 | |
430 | Returns get_user() for I<id>. |
431 | |
432 | =cut |
433 | |
434 | sub from_session { |
435 | my ( $self, $c, $id ) = @_; |
436 | $self->get_user($id); |
437 | } |
438 | |
439 | 1; |
440 | |
441 | __END__ |
442 | |
443 | =head1 AUTHORS |
444 | |
445 | Adam Jacob <holoway@cpan.org> |
446 | |
447 | Some parts stolen shamelessly and entirely from |
448 | L<Catalyst::Plugin::Authentication::Store::Htpasswd>. |
449 | |
450 | Currently maintained by Peter Karman <karman@cpan.org>. |
451 | |
452 | =head1 THANKS |
453 | |
454 | To nothingmuch, ghenry, castaway and the rest of #catalyst for the help. :) |
455 | |
456 | =head1 SEE ALSO |
457 | |
458 | L<Catalyst::Authentication::Store::LDAP>, L<Catalyst::Authentication::Store::LDAP::User>, L<Catalyst::Plugin::Authentication>, L<Net::LDAP> |
459 | |
460 | =head1 COPYRIGHT & LICENSE |
461 | |
462 | Copyright (c) 2005 the aforementioned authors. All rights |
463 | reserved. This program is free software; you can redistribute |
464 | it and/or modify it under the same terms as Perl itself. |
465 | |
466 | =cut |
467 | |