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[quix0rs-gnu-social.git] / actions / groupblock.php
1 <?php
2 /**
3  * Block a user from a group action class.
4  *
5  * PHP version 5
6  *
7  * @category Action
8  * @package  Laconica
9  * @author   Evan Prodromou <evan@controlyourself.ca>
10  * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
11  * @link     http://laconi.ca/
12  *
13  * Laconica - a distributed open-source microblogging tool
14  * Copyright (C) 2008, 2009, Control Yourself, Inc.
15  *
16  * This program is free software: you can redistribute it and/or modify
17  * it under the terms of the GNU Affero General Public License as published by
18  * the Free Software Foundation, either version 3 of the License, or
19  * (at your option) any later version.
20  *
21  * This program is distributed in the hope that it will be useful,
22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24  * GNU Affero General Public License for more details.
25  *
26  * You should have received a copy of the GNU Affero General Public License
27  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
28  */
29
30 if (!defined('LACONICA')) {
31     exit(1);
32 }
33
34 /**
35  * Block a user from a group
36  *
37  * @category Action
38  * @package  Laconica
39  * @author   Evan Prodromou <evan@controlyourself.ca>
40  * @license  http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
41  * @link     http://laconi.ca/
42  */
43
44 class GroupblockAction extends Action
45 {
46     var $profile = null;
47     var $group = null;
48
49     /**
50      * Take arguments for running
51      *
52      * @param array $args $_REQUEST args
53      *
54      * @return boolean success flag
55      */
56
57     function prepare($args)
58     {
59         parent::prepare($args);
60         if (!common_logged_in()) {
61             $this->clientError(_('Not logged in.'));
62             return false;
63         }
64         $token = $this->trimmed('token');
65         if (empty($token) || $token != common_session_token()) {
66             $this->clientError(_('There was a problem with your session token. Try again, please.'));
67             return;
68         }
69         $id = $this->trimmed('blockto');
70         if (empty($id)) {
71             $this->clientError(_('No profile specified.'));
72             return false;
73         }
74         $this->profile = Profile::staticGet('id', $id);
75         if (empty($this->profile)) {
76             $this->clientError(_('No profile with that ID.'));
77             return false;
78         }
79         $group_id = $this->trimmed('blockgroup');
80         if (empty($group_id)) {
81             $this->clientError(_('No group specified.'));
82             return false;
83         }
84         $this->group = User_group::staticGet('id', $group_id);
85         if (empty($this->group)) {
86             $this->clientError(_('No such group.'));
87             return false;
88         }
89         $user = common_current_user();
90         if (!$user->isAdmin($this->group)) {
91             $this->clientError(_('Only an admin can block group members.'), 401);
92             return false;
93         }
94         if (Group_block::isBlocked($this->group, $this->profile)) {
95             $this->clientError(_('User is already blocked from group.'));
96             return false;
97         }
98         // XXX: could have proactive blocks, but we don't have UI for it.
99         if (!$this->profile->isMember($this->group)) {
100             $this->clientError(_('User is not a member of group.'));
101             return false;
102         }
103         return true;
104     }
105
106     /**
107      * Handle request
108      *
109      * Shows a page with list of favorite notices
110      *
111      * @param array $args $_REQUEST args; handled in prepare()
112      *
113      * @return void
114      */
115     function handle($args)
116     {
117         parent::handle($args);
118         if ($_SERVER['REQUEST_METHOD'] == 'POST') {
119             if ($this->arg('no')) {
120                 common_redirect(common_local_url('groupmembers',
121                                                  array('nickname' => $this->group->nickname)),
122                                 303);
123             } elseif ($this->arg('yes')) {
124                 $this->blockProfile();
125             } elseif ($this->arg('blockto')) {
126                 $this->showPage();
127             }
128         }
129     }
130
131     function showContent() {
132         $this->areYouSureForm();
133     }
134
135     function title() {
136         return _('Block user from group');
137     }
138
139     function showNoticeForm() {
140         // nop
141     }
142
143     /**
144      * Confirm with user.
145      *
146      * Shows a confirmation form.
147      *
148      * @return void
149      */
150
151     function areYouSureForm()
152     {
153         $id = $this->profile->id;
154         $this->element('p', null,
155                        sprintf(_('Are you sure you want to block user "%s" from the group "%s"? '.
156                                  'They will be removed from the group, unable to post, and '.
157                                  'unable to subscribe to the group in the future.'),
158                                $this->profile->getBestName(),
159                                $this->group->getBestName()));
160         $this->elementStart('form', array('id' => 'block-' . $id,
161                                            'method' => 'post',
162                                            'class' => 'block',
163                                            'action' => common_local_url('groupblock')));
164         $this->hidden('token', common_session_token());
165         $this->hidden('blockto-' . $this->profile->id,
166                       $this->profile->id,
167                       'blockto');
168         $this->hidden('blockgroup-' . $this->group->id,
169                       $this->group->id,
170                       'blockgroup');
171         foreach ($this->args as $k => $v) {
172             if (substr($k, 0, 9) == 'returnto-') {
173                 $this->hidden($k, $v);
174             }
175         }
176         $this->submit('no', _('No'));
177         $this->submit('yes', _('Yes'));
178         $this->elementEnd('form');
179     }
180
181     /**
182      * Actually block a user.
183      *
184      * @return void
185      */
186
187     function blockProfile()
188     {
189         $block = Group_block::blockProfile($this->group, $this->profile,
190                                            common_current_user());
191
192         if (empty($block)) {
193             $this->serverError(_("Database error blocking user from group."));
194             return false;
195         }
196
197         // Now, gotta figure where we go back to
198         foreach ($this->args as $k => $v) {
199             if ($k == 'returnto-action') {
200                 $action = $v;
201             } elseif (substr($k, 0, 9) == 'returnto-') {
202                 $args[substr($k, 9)] = $v;
203             }
204         }
205
206         if ($action) {
207             common_redirect(common_local_url($action, $args), 303);
208         } else {
209             common_redirect(common_local_url('groupmembers',
210                                              array('nickname' => $this->group->nickname)),
211                             303);
212         }
213     }
214 }
215