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