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1 | |
2 | =pod |
3 | |
4 | =head1 NAME |
5 | |
9638f14b |
6 | Catalyst::Authentication::Store::LDAP::Backend |
f66d606b |
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))', |
57d476f1 |
34 | 'user_scope' => 'one', # or 'sub' for Active Directory |
f66d606b |
35 | 'user_field' => 'uid', |
36 | 'user_search_options' => { |
37 | 'deref' => 'always', |
a03db022 |
38 | 'attrs' => [qw( distinguishedname name mail )], |
f66d606b |
39 | }, |
1647b33a |
40 | 'user_results_filter' => sub { return shift->pop_entry }, |
f66d606b |
41 | 'entry_class' => 'MyApp::LDAP::Entry', |
405489b5 |
42 | 'user_class' => 'MyUser', |
f66d606b |
43 | 'use_roles' => 1, |
44 | 'role_basedn' => 'ou=groups,dc=yourcompany,dc=com', |
45 | 'role_filter' => '(&(objectClass=posixGroup)(member=%s))', |
46 | 'role_scope' => 'one', |
47 | 'role_field' => 'cn', |
48 | 'role_value' => 'dn', |
49 | 'role_search_options' => { |
50 | 'deref' => 'always', |
51 | }, |
405489b5 |
52 | 'role_search_as_user' => 0, |
439924cb |
53 | 'persist_in_session' => 'all', |
f66d606b |
54 | ); |
9638f14b |
55 | |
f66d606b |
56 | our $users = Catalyst::Authentication::Store::LDAP::Backend->new(\%config); |
57 | |
f66d606b |
58 | =head1 DESCRIPTION |
59 | |
afb8e81c |
60 | You probably want L<Catalyst::Authentication::Store::LDAP>. |
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61 | |
afb8e81c |
62 | Otherwise, this lets you create a store manually. |
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63 | |
64 | See the L<Catalyst::Authentication::Store::LDAP> documentation for |
65 | an explanation of the configuration options. |
66 | |
67 | =head1 METHODS |
68 | |
69 | =cut |
70 | |
71 | package Catalyst::Authentication::Store::LDAP::Backend; |
72 | use base qw( Class::Accessor::Fast ); |
73 | |
74 | use strict; |
75 | use warnings; |
76 | |
dfead577 |
77 | our $VERSION = '1.015'; |
f66d606b |
78 | |
79 | use Catalyst::Authentication::Store::LDAP::User; |
80 | use Net::LDAP; |
405489b5 |
81 | use Catalyst::Utils (); |
f66d606b |
82 | |
83 | BEGIN { |
84 | __PACKAGE__->mk_accessors( |
85 | qw( ldap_server ldap_server_options binddn |
86 | bindpw entry_class user_search_options |
87 | user_filter user_basedn user_scope |
88 | user_attrs user_field use_roles role_basedn |
89 | role_filter role_scope role_field role_value |
90 | role_search_options start_tls start_tls_options |
405489b5 |
91 | user_results_filter user_class role_search_as_user |
439924cb |
92 | persist_in_session |
f66d606b |
93 | ) |
94 | ); |
95 | } |
96 | |
97 | =head2 new($config) |
98 | |
99 | Creates a new L<Catalyst::Authentication::Store::LDAP::Backend> object. |
100 | $config should be a hashref, which should contain the configuration options |
101 | listed in L<Catalyst::Authentication::Store::LDAP>'s documentation. |
102 | |
103 | Also sets a few sensible defaults. |
104 | |
105 | =cut |
106 | |
107 | sub new { |
108 | my ( $class, $config ) = @_; |
109 | |
110 | unless ( defined($config) && ref($config) eq "HASH" ) { |
111 | Catalyst::Exception->throw( |
112 | "Catalyst::Authentication::Store::LDAP::Backend needs to be configured with a hashref." |
113 | ); |
114 | } |
115 | my %config_hash = %{$config}; |
116 | $config_hash{'binddn'} ||= 'anonymous'; |
117 | $config_hash{'user_filter'} ||= '(uid=%s)'; |
118 | $config_hash{'user_scope'} ||= 'sub'; |
119 | $config_hash{'user_field'} ||= 'uid'; |
120 | $config_hash{'role_filter'} ||= '(memberUid=%s)'; |
121 | $config_hash{'role_scope'} ||= 'sub'; |
122 | $config_hash{'role_field'} ||= 'cn'; |
06d130c2 |
123 | $config_hash{'use_roles'} = '1' |
124 | unless exists $config_hash{use_roles}; |
f66d606b |
125 | $config_hash{'start_tls'} ||= '0'; |
126 | $config_hash{'entry_class'} ||= 'Catalyst::Model::LDAP::Entry'; |
d05c83dd |
127 | $config_hash{'user_class'} |
128 | ||= 'Catalyst::Authentication::Store::LDAP::User'; |
405489b5 |
129 | $config_hash{'role_search_as_user'} ||= 0; |
d7ddb040 |
130 | $config_hash{'persist_in_session'} ||= 'username'; |
4f7db831 |
131 | Catalyst::Exception->throw('persist_in_session must be either username or all') |
132 | unless $config_hash{'persist_in_session'} =~ /\A(?:username|all)\z/; |
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133 | |
d05c83dd |
134 | Catalyst::Utils::ensure_class_loaded( $config_hash{'user_class'} ); |
f66d606b |
135 | my $self = \%config_hash; |
136 | bless( $self, $class ); |
137 | return $self; |
138 | } |
139 | |
52a972a4 |
140 | =head2 find_user( I<authinfo>, $c ) |
f66d606b |
141 | |
142 | Creates a L<Catalyst::Authentication::Store::LDAP::User> object |
9638f14b |
143 | for the given User ID. This is the preferred mechanism for getting a |
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144 | given User out of the Store. |
145 | |
146 | I<authinfo> should be a hashref with a key of either C<id> or |
147 | C<username>. The value will be compared against the LDAP C<user_field> field. |
148 | |
149 | =cut |
150 | |
151 | sub find_user { |
152 | my ( $self, $authinfo, $c ) = @_; |
52a972a4 |
153 | return $self->get_user( $authinfo->{id} || $authinfo->{username}, $c ); |
f66d606b |
154 | } |
155 | |
5faab354 |
156 | =head2 get_user( I<id>, $c) |
f66d606b |
157 | |
158 | Creates a L<Catalyst::Authentication::Store::LDAP::User> object |
52a972a4 |
159 | for the given User ID, or calls C<new> on the class specified in |
160 | C<user_class>. This instance of the store object, the results of |
161 | C<lookup_user> and $c are passed as arguments (in that order) to C<new>. |
162 | This is the preferred mechanism for getting a given User out of the Store. |
f66d606b |
163 | |
164 | =cut |
165 | |
166 | sub get_user { |
52a972a4 |
167 | my ( $self, $id, $c ) = @_; |
d05c83dd |
168 | my $user = $self->user_class->new( $self, $self->lookup_user($id), $c ); |
f66d606b |
169 | return $user; |
170 | } |
171 | |
172 | =head2 ldap_connect |
173 | |
174 | Returns a L<Net::LDAP> object, connected to your LDAP server. (According |
175 | to how you configured the Backend, of course) |
176 | |
177 | =cut |
178 | |
179 | sub ldap_connect { |
180 | my ($self) = shift; |
181 | my $ldap; |
182 | if ( defined( $self->ldap_server_options() ) ) { |
183 | $ldap |
184 | = Net::LDAP->new( $self->ldap_server, |
185 | %{ $self->ldap_server_options } ) |
186 | or Catalyst::Exception->throw($@); |
187 | } |
188 | else { |
189 | $ldap = Net::LDAP->new( $self->ldap_server ) |
190 | or Catalyst::Exception->throw($@); |
191 | } |
192 | if ( defined( $self->start_tls ) && $self->start_tls =~ /(1|true)/i ) { |
193 | my $mesg; |
194 | if ( defined( $self->start_tls_options ) ) { |
195 | $mesg = $ldap->start_tls( %{ $self->start_tls_options } ); |
196 | } |
197 | else { |
198 | $mesg = $ldap->start_tls; |
199 | } |
200 | if ( $mesg->is_error ) { |
201 | Catalyst::Exception->throw( "TLS Error: " . $mesg->error ); |
202 | } |
203 | } |
204 | return $ldap; |
205 | } |
206 | |
207 | =head2 ldap_bind($ldap, $binddn, $bindpw) |
208 | |
209 | Bind's to the directory. If $ldap is undef, it will connect to the |
210 | LDAP server first. $binddn should be the DN of the object you wish |
211 | to bind as, and $bindpw the password. |
212 | |
213 | If $binddn is "anonymous", an anonymous bind will be performed. |
214 | |
215 | =cut |
216 | |
217 | sub ldap_bind { |
238a096f |
218 | my ( $self, $ldap, $binddn, $bindpw ) = @_; |
d05c83dd |
219 | $ldap ||= $self->ldap_connect; |
f66d606b |
220 | if ( !defined($ldap) ) { |
221 | Catalyst::Exception->throw("LDAP Server undefined!"); |
222 | } |
50f88c5d |
223 | |
224 | # if username is present, make sure password is present too. |
225 | # see https://rt.cpan.org/Ticket/Display.html?id=81908 |
226 | if ( !defined $binddn ) { |
227 | $binddn = $self->binddn; |
228 | $bindpw = $self->bindpw; |
229 | } |
230 | |
f66d606b |
231 | if ( $binddn eq "anonymous" ) { |
405489b5 |
232 | $self->_ldap_bind_anon($ldap); |
f66d606b |
233 | } |
234 | else { |
238a096f |
235 | if ($bindpw) { |
f66d606b |
236 | my $mesg = $ldap->bind( $binddn, 'password' => $bindpw ); |
237 | if ( $mesg->is_error ) { |
238a096f |
238 | Catalyst::Exception->throw( |
239 | "Error on Initial Bind: " . $mesg->error ); |
f66d606b |
240 | } |
241 | } |
242 | else { |
d05c83dd |
243 | $self->_ldap_bind_anon( $ldap, $binddn ); |
f66d606b |
244 | } |
245 | } |
246 | return $ldap; |
247 | } |
248 | |
405489b5 |
249 | sub _ldap_bind_anon { |
d05c83dd |
250 | my ( $self, $ldap, $dn ) = @_; |
405489b5 |
251 | my $mesg = $ldap->bind($dn); |
252 | if ( $mesg->is_error ) { |
253 | Catalyst::Exception->throw( "Error on Bind: " . $mesg->error ); |
254 | } |
255 | } |
256 | |
238a096f |
257 | =head2 ldap_auth( $binddn, $bindpw ) |
258 | |
259 | Connect to the LDAP server and do an authenticated bind against the |
260 | directory. Throws an exception if connecting to the LDAP server fails. |
261 | Returns 1 if binding succeeds, 0 if it fails. |
262 | |
263 | =cut |
264 | |
265 | sub ldap_auth { |
266 | my ( $self, $binddn, $bindpw ) = @_; |
267 | my $ldap = $self->ldap_connect; |
268 | if ( !defined $ldap ) { |
269 | Catalyst::Exception->throw("LDAP server undefined!"); |
270 | } |
271 | my $mesg = $ldap->bind( $binddn, password => $bindpw ); |
272 | return $mesg->is_error ? 0 : 1; |
273 | } |
274 | |
f66d606b |
275 | =head2 lookup_user($id) |
276 | |
277 | Given a User ID, this method will: |
278 | |
279 | A) Bind to the directory using the configured binddn and bindpw |
280 | B) Perform a search for the User Object in the directory, using |
281 | user_basedn, user_filter, and user_scope. |
d94851da |
282 | C) Assuming we found the object, we will walk it's attributes |
f66d606b |
283 | using L<Net::LDAP::Entry>'s get_value method. We store the |
d94851da |
284 | results in a hashref. If we do not find the object, then |
285 | undef is returned. |
286 | D) Return a hashref that looks like: |
287 | |
f66d606b |
288 | $results = { |
289 | 'ldap_entry' => $entry, # The Net::LDAP::Entry object |
290 | 'attributes' => $attributes, |
291 | } |
292 | |
1647b33a |
293 | This method is usually only called by find_user(). |
f66d606b |
294 | |
295 | =cut |
296 | |
297 | sub lookup_user { |
298 | my ( $self, $id ) = @_; |
299 | |
02f3c071 |
300 | # Trim trailing space or we confuse ourselves |
301 | $id =~ s/\s+$//; |
f66d606b |
302 | my $ldap = $self->ldap_bind; |
303 | my @searchopts; |
304 | if ( defined( $self->user_basedn ) ) { |
305 | push( @searchopts, 'base' => $self->user_basedn ); |
306 | } |
307 | else { |
308 | Catalyst::Exception->throw( |
309 | "You must set user_basedn before looking up users!"); |
310 | } |
311 | my $filter = $self->_replace_filter( $self->user_filter, $id ); |
312 | push( @searchopts, 'filter' => $filter ); |
313 | push( @searchopts, 'scope' => $self->user_scope ); |
314 | if ( defined( $self->user_search_options ) ) { |
315 | push( @searchopts, %{ $self->user_search_options } ); |
316 | } |
317 | my $usersearch = $ldap->search(@searchopts); |
d94851da |
318 | |
a2f66fa8 |
319 | return undef if ( $usersearch->is_error ); |
d94851da |
320 | |
f66d606b |
321 | my $userentry; |
1647b33a |
322 | my $user_field = $self->user_field; |
323 | my $results_filter = $self->user_results_filter; |
324 | my $entry; |
325 | if ( defined($results_filter) ) { |
326 | $entry = &$results_filter($usersearch); |
327 | } |
328 | else { |
329 | $entry = $usersearch->pop_entry; |
330 | } |
331 | if ( $usersearch->pop_entry ) { |
332 | Catalyst::Exception->throw( |
333 | "More than one entry matches user search.\n" |
334 | . "Consider defining a user_results_filter sub." ); |
335 | } |
336 | |
337 | # a little extra sanity check with the 'eq' since LDAP already |
338 | # says it matches. |
5772b468 |
339 | # NOTE that Net::LDAP returns exactly what you asked for, but |
340 | # because LDAP is often case insensitive, FoO can match foo |
341 | # and so we normalize with lc(). |
1647b33a |
342 | if ( defined($entry) ) { |
5772b468 |
343 | unless ( lc( $entry->get_value($user_field) ) eq lc($id) ) { |
1647b33a |
344 | Catalyst::Exception->throw( |
345 | "LDAP claims '$user_field' equals '$id' but results entry does not match." |
346 | ); |
f66d606b |
347 | } |
1647b33a |
348 | $userentry = $entry; |
f66d606b |
349 | } |
1647b33a |
350 | |
f66d606b |
351 | $ldap->unbind; |
352 | $ldap->disconnect; |
353 | unless ($userentry) { |
354 | return undef; |
355 | } |
356 | my $attrhash; |
357 | foreach my $attr ( $userentry->attributes ) { |
358 | my @attrvalues = $userentry->get_value($attr); |
359 | if ( scalar(@attrvalues) == 1 ) { |
360 | $attrhash->{ lc($attr) } = $attrvalues[0]; |
361 | } |
362 | else { |
363 | $attrhash->{ lc($attr) } = \@attrvalues; |
364 | } |
365 | } |
d05c83dd |
366 | |
367 | eval { Catalyst::Utils::ensure_class_loaded( $self->entry_class ) }; |
f66d606b |
368 | if ( !$@ ) { |
369 | bless( $userentry, $self->entry_class ); |
370 | $userentry->{_use_unicode}++; |
371 | } |
372 | my $rv = { |
373 | 'ldap_entry' => $userentry, |
374 | 'attributes' => $attrhash, |
375 | }; |
376 | return $rv; |
377 | } |
378 | |
405489b5 |
379 | =head2 lookup_roles($userobj, [$ldap]) |
f66d606b |
380 | |
9638f14b |
381 | This method looks up the roles for a given user. It takes a |
f66d606b |
382 | L<Catalyst::Authentication::Store::LDAP::User> object |
405489b5 |
383 | as it's first argument, and can optionally take a I<Net::LDAP> object which |
384 | is used rather than the default binding if supplied. |
f66d606b |
385 | |
386 | It returns an array containing the role_field attribute from all the |
387 | objects that match it's criteria. |
388 | |
389 | =cut |
390 | |
391 | sub lookup_roles { |
405489b5 |
392 | my ( $self, $userobj, $ldap ) = @_; |
f66d606b |
393 | if ( $self->use_roles == 0 || $self->use_roles =~ /^false$/i ) { |
394 | return undef; |
395 | } |
5a9aba6e |
396 | $ldap ||= $self->role_search_as_user |
397 | ? $userobj->ldap_connection : $self->ldap_bind; |
f66d606b |
398 | my @searchopts; |
399 | if ( defined( $self->role_basedn ) ) { |
400 | push( @searchopts, 'base' => $self->role_basedn ); |
401 | } |
402 | else { |
403 | Catalyst::Exception->throw( |
404 | "You must set up role_basedn before looking up roles!"); |
405 | } |
406 | my $filter_value = $userobj->has_attribute( $self->role_value ); |
407 | if ( !defined($filter_value) ) { |
408 | Catalyst::Exception->throw( "User object " |
409 | . $userobj->username |
410 | . " has no " |
411 | . $self->role_value |
412 | . " attribute, so I can't look up it's roles!" ); |
413 | } |
414 | my $filter = $self->_replace_filter( $self->role_filter, $filter_value ); |
415 | push( @searchopts, 'filter' => $filter ); |
416 | push( @searchopts, 'scope' => $self->role_scope ); |
417 | push( @searchopts, 'attrs' => [ $self->role_field ] ); |
418 | if ( defined( $self->role_search_options ) ) { |
419 | push( @searchopts, %{ $self->role_search_options } ); |
420 | } |
421 | my $rolesearch = $ldap->search(@searchopts); |
422 | my @roles; |
ab62b426 |
423 | RESULT: foreach my $entry ( $rolesearch->entries ) { |
424 | push( @roles, $entry->get_value( $self->role_field ) ); |
f66d606b |
425 | } |
426 | return @roles; |
427 | } |
428 | |
429 | sub _replace_filter { |
430 | my $self = shift; |
431 | my $filter = shift; |
432 | my $replace = shift; |
18d41a8f |
433 | $replace =~ s/([*()\\\x{0}])/sprintf '\\%02x', ord($1)/ge; |
f66d606b |
434 | $filter =~ s/\%s/$replace/g; |
435 | return $filter; |
436 | } |
437 | |
438 | =head2 user_supports |
439 | |
9638f14b |
440 | Returns the value of |
f66d606b |
441 | Catalyst::Authentication::Store::LDAP::User->supports(@_). |
442 | |
443 | =cut |
444 | |
445 | sub user_supports { |
446 | my $self = shift; |
447 | |
448 | # this can work as a class method |
449 | Catalyst::Authentication::Store::LDAP::User->supports(@_); |
450 | } |
451 | |
e0c4eaa2 |
452 | =head2 from_session( I<id>, I<$c>, $frozenuser ) |
f66d606b |
453 | |
e0c4eaa2 |
454 | Revives a serialized user from storage in the session. |
f66d606b |
455 | |
e5e1d261 |
456 | Supports users stored with a different persist_in_session setting. |
457 | |
f66d606b |
458 | =cut |
459 | |
460 | sub from_session { |
439924cb |
461 | my ( $self, $c, $frozenuser ) = @_; |
462 | |
e5e1d261 |
463 | # we need to restore the user depending on the current storage of the |
464 | # user in the session store which might differ from what |
465 | # persist_in_session is set to now |
466 | if ( ref $frozenuser eq 'HASH' ) { |
467 | # we can rely on the existance of this key if the user is a hashref |
468 | if ( $frozenuser->{persist_in_session} eq 'all' ) { |
469 | return $self->user_class->new( $self, $frozenuser->{user}, $c, $frozenuser->{_roles} ); |
470 | } |
439924cb |
471 | } |
472 | |
473 | return $self->get_user( $frozenuser, $c ); |
f66d606b |
474 | } |
475 | |
476 | 1; |
477 | |
478 | __END__ |
479 | |
480 | =head1 AUTHORS |
481 | |
482 | Adam Jacob <holoway@cpan.org> |
483 | |
484 | Some parts stolen shamelessly and entirely from |
485 | L<Catalyst::Plugin::Authentication::Store::Htpasswd>. |
486 | |
487 | Currently maintained by Peter Karman <karman@cpan.org>. |
488 | |
489 | =head1 THANKS |
490 | |
491 | To nothingmuch, ghenry, castaway and the rest of #catalyst for the help. :) |
492 | |
493 | =head1 SEE ALSO |
494 | |
495 | L<Catalyst::Authentication::Store::LDAP>, L<Catalyst::Authentication::Store::LDAP::User>, L<Catalyst::Plugin::Authentication>, L<Net::LDAP> |
496 | |
497 | =head1 COPYRIGHT & LICENSE |
498 | |
499 | Copyright (c) 2005 the aforementioned authors. All rights |
500 | reserved. This program is free software; you can redistribute |
501 | it and/or modify it under the same terms as Perl itself. |
502 | |
503 | =cut |
504 | |