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06675d2e |
1 | #!/usr/bin/perl |
2 | |
3 | package Catalyst::Plugin::Authentication; |
4 | |
b003080b |
5 | use base qw/Class::Accessor::Fast Class::Data::Inheritable/; |
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6 | |
b003080b |
7 | BEGIN { |
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8 | __PACKAGE__->mk_accessors(qw/_user/); |
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9 | __PACKAGE__->mk_classdata($_) for qw/_auth_stores _auth_store_names/; |
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10 | } |
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11 | |
12 | use strict; |
13 | use warnings; |
14 | |
96777f3a |
15 | use Tie::RefHash; |
12dae309 |
16 | use Class::Inspector; |
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17 | |
e145babc |
18 | #BEGIN { |
19 | # require constant; |
20 | # constant->import(have_want => eval { require Want }); |
21 | #} |
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22 | |
e09a839c |
23 | our $VERSION = "0.02"; |
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24 | |
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25 | sub set_authenticated { |
26 | my ( $c, $user ) = @_; |
27 | |
28 | $c->user($user); |
e300c5b6 |
29 | $c->request->{user} = $user; # compatibility kludge |
06675d2e |
30 | |
31 | if ( $c->isa("Catalyst::Plugin::Session") |
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32 | and $c->config->{authentication}{use_session} |
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33 | and $user->supports("session") ) |
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34 | { |
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35 | $c->save_user_in_session($user); |
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36 | } |
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37 | |
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38 | $c->NEXT::set_authenticated($user); |
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39 | } |
40 | |
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41 | sub user { |
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42 | my $c = shift; |
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43 | |
e300c5b6 |
44 | if (@_) { |
45 | return $c->_user(@_); |
46 | } |
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47 | |
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48 | my $user = $c->_user; |
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49 | |
e300c5b6 |
50 | if ( $user and !Scalar::Util::blessed($user) ) { |
cde43a59 |
51 | # return 1 if have_want() && Want::want("BOOL"); |
e300c5b6 |
52 | return $c->auth_restore_user($user); |
53 | } |
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54 | |
e300c5b6 |
55 | return $user; |
7bb06c91 |
56 | } |
57 | |
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58 | sub user_exists { |
59 | my $c = shift; |
60 | return defined($c->_user); |
61 | } |
62 | |
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63 | sub save_user_in_session { |
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64 | my ( $c, $user ) = @_; |
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65 | |
66 | my $store = $user->store || ref $user; |
67 | $c->session->{__user_store} = $c->get_auth_store_name($store) || $store; |
68 | $c->session->{__user} = $user->for_session; |
69 | } |
70 | |
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71 | sub logout { |
72 | my $c = shift; |
73 | |
74 | $c->user(undef); |
b003080b |
75 | |
76 | if ( $c->isa("Catalyst::Plugin::Session") |
77 | and $c->config->{authentication}{use_session} ) |
78 | { |
96777f3a |
79 | delete @{ $c->session }{qw/__user __user_store/}; |
b003080b |
80 | } |
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81 | } |
82 | |
7d0922d8 |
83 | sub get_user { |
84 | my ( $c, $uid ) = @_; |
85 | |
86 | if ( my $store = $c->default_auth_store ) { |
87 | return $store->get_user($uid); |
88 | } |
89 | else { |
90 | Catalyst::Exception->throw( |
91 | "The user id $uid was passed to an authentication " |
92 | . "plugin, but no default store was specified" ); |
93 | } |
94 | } |
95 | |
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96 | sub prepare { |
97 | my $c = shift->NEXT::prepare(@_); |
98 | |
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99 | if ( $c->isa("Catalyst::Plugin::Session") |
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100 | and !$c->user ) |
101 | { |
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102 | if ( $c->sessionid and my $frozen_user = $c->session->{__user} ) { |
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103 | $c->_user($frozen_user); |
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104 | } |
105 | } |
106 | |
107 | return $c; |
108 | } |
109 | |
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110 | sub auth_restore_user { |
e300c5b6 |
111 | my ( $c, $frozen_user, $store_name ) = @_; |
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112 | |
4fbe2e14 |
113 | return |
cde43a59 |
114 | unless $c->isa("Catalyst::Plugin::Session") |
4fbe2e14 |
115 | and $c->config->{authentication}{use_session} |
116 | and $c->sessionid; |
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117 | |
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118 | $store_name ||= $c->session->{__user_store}; |
119 | $frozen_user ||= $c->session->{__user}; |
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120 | |
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121 | my $store = $c->get_auth_store($store_name); |
122 | $c->_user( my $user = $store->from_session( $c, $frozen_user ) ); |
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123 | |
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124 | return $user; |
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125 | |
126 | } |
127 | |
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128 | sub setup { |
129 | my $c = shift; |
130 | |
712a35bf |
131 | my $cfg = $c->config->{authentication} || {}; |
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132 | |
133 | %$cfg = ( |
134 | use_session => 1, |
135 | %$cfg, |
136 | ); |
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137 | |
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138 | $c->register_auth_stores( |
139 | default => $cfg->{store}, |
140 | %{ $cfg->{stores} || {} }, |
141 | ); |
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142 | |
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143 | $c->NEXT::setup(@_); |
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144 | } |
145 | |
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146 | sub get_auth_store { |
12dae309 |
147 | my ( $self, $name ) = @_; |
148 | $self->auth_stores->{$name} || ( Class::Inspector->loaded($name) && $name ); |
96777f3a |
149 | } |
150 | |
151 | sub get_auth_store_name { |
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152 | my ( $self, $store ) = @_; |
153 | $self->auth_store_names->{$store}; |
96777f3a |
154 | } |
155 | |
156 | sub register_auth_stores { |
12dae309 |
157 | my ( $self, %new ) = @_; |
96777f3a |
158 | |
12dae309 |
159 | foreach my $name ( keys %new ) { |
160 | my $store = $new{$name} or next; |
161 | $self->auth_stores->{$name} = $store; |
162 | $self->auth_store_names->{$store} = $name; |
163 | } |
96777f3a |
164 | } |
165 | |
166 | sub auth_stores { |
12dae309 |
167 | my $self = shift; |
168 | $self->_auth_stores(@_) || $self->_auth_stores( {} ); |
96777f3a |
169 | } |
170 | |
171 | sub auth_store_names { |
12dae309 |
172 | my $self = shift; |
96777f3a |
173 | |
4402d92d |
174 | $self->_auth_store_names || do { |
12dae309 |
175 | tie my %hash, 'Tie::RefHash'; |
176 | $self->_auth_store_names( \%hash ); |
4fbe2e14 |
177 | } |
96777f3a |
178 | } |
179 | |
180 | sub default_auth_store { |
12dae309 |
181 | my $self = shift; |
96777f3a |
182 | |
12dae309 |
183 | if ( my $new = shift ) { |
184 | $self->register_auth_stores( default => $new ); |
185 | } |
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186 | |
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187 | $self->get_auth_store("default"); |
96777f3a |
188 | } |
189 | |
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190 | __PACKAGE__; |
191 | |
192 | __END__ |
193 | |
194 | =pod |
195 | |
196 | =head1 NAME |
197 | |
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198 | Catalyst::Plugin::Authentication - Infrastructure plugin for the Catalyst |
199 | authentication framework. |
06675d2e |
200 | |
201 | =head1 SYNOPSIS |
202 | |
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203 | use Catalyst qw/ |
204 | Authentication |
205 | Authentication::Store::Foo |
206 | Authentication::Credential::Password |
207 | /; |
208 | |
209 | # later on ... |
210 | # ->login is provided by the Credential::Password module |
211 | $c->login('myusername', 'mypassword'); |
212 | my $age = $c->user->age; |
213 | $c->logout; |
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214 | |
215 | =head1 DESCRIPTION |
216 | |
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217 | The authentication plugin provides generic user support. It is the basis |
218 | for both authentication (checking the user is who they claim to be), and |
219 | authorization (allowing the user to do what the system authorises them to do). |
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220 | |
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221 | Using authentication is split into two parts. A Store is used to actually |
222 | store the user information, and can store any amount of data related to |
223 | the user. Multiple stores can be accessed from within one application. |
224 | Credentials are used to verify users, using the store, given data from |
225 | the frontend. |
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226 | |
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227 | To implement authentication in a catalyst application you need to add this |
228 | module, plus at least one store and one credential module. |
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229 | |
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230 | Authentication data can also be stored in a session, if the application |
231 | is using the L<Catalyst::Plugin::Session> module. |
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232 | |
233 | =head1 METHODS |
234 | |
235 | =over 4 |
236 | |
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237 | =item user |
238 | |
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239 | Returns the currently logged in user or undef if there is none. |
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240 | |
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241 | =item user_exists |
242 | |
243 | Whether or not a user is logged in right now. |
244 | |
245 | The reason this method exists is that C<<$c->user>> may needlessly load the |
246 | user from the auth store. |
247 | |
248 | If you're just going to say |
249 | |
250 | if ( $c->user_user ) { |
251 | # foo |
252 | } else { |
253 | $c->forward("login"); |
254 | } |
255 | |
256 | it should be more efficient than C<<$c->user>> when a user is marked in the session |
1e055395 |
257 | but C<< $c->user >> hasn't been called yet. |
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258 | |
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259 | =item logout |
260 | |
261 | Delete the currently logged in user from C<user> and the session. |
262 | |
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263 | =item get_user $uid |
264 | |
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265 | Fetch a particular users details, defined by the given ID, via the default store. |
266 | |
267 | =back |
268 | |
269 | =head1 CONFIGURATION |
270 | |
271 | =over 4 |
272 | |
273 | =item use_session |
274 | |
275 | Whether or not to store the user's logged in state in the session, if the |
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276 | application is also using the L<Catalyst::Plugin::Session> plugin. This |
277 | value is set to true per default. |
278 | |
279 | =item store |
280 | |
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281 | If multiple stores are being used, set the module you want as default here. |
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282 | |
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283 | =back |
284 | |
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285 | =item stores |
286 | |
287 | If multiple stores are being used, you need to provide a name for each store |
288 | here, as a hash, the keys are the names you wish to use, and the values are |
289 | the the names of the plugins. |
290 | |
291 | # example |
292 | __PACKAGE__->config( authentication => { |
293 | store => 'Catalyst::Plugin::Authentication::Store::HtPasswd', |
294 | stores => { |
295 | 'dbic' => 'Catalyst::Plugin::Authentication::Store::DBIC' |
296 | } |
297 | }); |
298 | |
299 | |
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300 | =head1 METHODS FOR STORE MANAGEMENT |
301 | |
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302 | =over 4 |
303 | |
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304 | =item default_auth_store |
305 | |
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306 | Return the store whose name is 'default'. |
7d0922d8 |
307 | |
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308 | This is set to C<< $c->config->{authentication}{store} >> if that value exists, |
4fbe2e14 |
309 | or by using a Store plugin: |
310 | |
311 | use Catalyst qw/Authentication Authentication::Store::Minimal/; |
312 | |
313 | Sets the default store to |
314 | L<Catalyst::Plugin::Authentication::Store::Minimal::Backend>. |
315 | |
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316 | |
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317 | =item get_auth_store $name |
318 | |
319 | Return the store whose name is $name. |
320 | |
321 | =item get_auth_store_name $store |
322 | |
323 | Return the name of the store $store. |
324 | |
325 | =item auth_stores |
326 | |
327 | A hash keyed by name, with the stores registered in the app. |
328 | |
329 | =item auth_store_names |
330 | |
331 | A ref-hash keyed by store, which contains the names of the stores. |
332 | |
333 | =item register_auth_stores %stores_by_name |
334 | |
335 | Register stores into the application. |
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336 | |
fe4cf44a |
337 | =back |
338 | |
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339 | =head1 INTERNAL METHODS |
340 | |
341 | =over 4 |
342 | |
343 | =item set_authenticated $user |
344 | |
345 | Marks a user as authenticated. Should be called from a |
346 | C<Catalyst::Plugin::Authentication::Credential> plugin after successful |
347 | authentication. |
348 | |
349 | This involves setting C<user> and the internal data in C<session> if |
350 | L<Catalyst::Plugin::Session> is loaded. |
351 | |
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352 | =item auth_restore_user $user |
353 | |
354 | Used to restore a user from the session, by C<user> only when it's actually |
355 | needed. |
356 | |
357 | =item save_user_in_session $user |
358 | |
359 | Used to save the user in a session. |
360 | |
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361 | =item prepare |
362 | |
363 | Revives a user from the session object if there is one. |
364 | |
365 | =item setup |
366 | |
367 | Sets the default configuration parameters. |
368 | |
369 | =item |
370 | |
371 | =back |
372 | |
fbe577ac |
373 | =head1 SEE ALSO |
374 | |
375 | L<Catalyst::Plugin::Authentication::Credential::Password>, |
376 | L<Catalyst::Plugin::Authentication::Store::Minimal>, |
377 | L<Catalyst::Plugin::Authorization::ACL>, |
378 | L<Catalyst::Plugin::Authorization::Roles>. |
379 | |
380 | =head1 AUTHOR |
381 | |
382 | Yuval Kogman, C<nothingmuch@woobling.org> |
7d2f34eb |
383 | Jess Robinson |
384 | David Kamholz |
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385 | |
fbe577ac |
386 | =head1 COPYRIGHT & LICNESE |
387 | |
388 | Copyright (c) 2005 the aforementioned authors. All rights |
389 | reserved. This program is free software; you can redistribute |
390 | it and/or modify it under the same terms as Perl itself. |
391 | |
392 | =cut |
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393 | |