actions/foafgroup.php

   1 <?php
   2 /*
   3  * StatusNet the distributed open-source microblogging tool
   4  * Copyright (C) 2008, 2009, StatusNet, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  * @category  Mail
  20  * @package   StatusNet
  21  * @author    Evan Prodromou <evan@status.net>
  22  * @author    Toby Inkster <mail@tobyinkster.co.uk>
  23  * @copyright 2009 StatusNet, Inc.
  24  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  25  * @link      http://status.net/
  26  */
  27
  28 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
  29
  30 // @todo XXX: Documentation missing.
  31 class FoafGroupAction extends Action
  32 {
  33     function isReadOnly($args)
  34     {
  35         return true;
  36     }
  37
  38     function prepare($args)
  39     {
  40         parent::prepare($args);
  41
  42         $nickname_arg = $this->arg('nickname');
  43
  44         if (empty($nickname_arg)) {
  45             // TRANS: Client error displayed when requesting Friends of a Friend feed without providing a group nickname.
  46             $this->clientError(_('No such group.'), 404);
  47             return false;
  48         }
  49
  50         $this->nickname = common_canonical_nickname($nickname_arg);
  51
  52         // Permanent redirect on non-canonical nickname
  53
  54         if ($nickname_arg != $this->nickname) {
  55             common_redirect(common_local_url('foafgroup',
  56                                              array('nickname' => $this->nickname)),
  57                             301);
  58             return false;
  59         }
  60
  61         $local = Local_group::staticGet('nickname', $this->nickname);
  62
  63         if (!$local) {
  64             // TRANS: Client error displayed when requesting Friends of a Friend feed for a non-local group.
  65             $this->clientError(_('No such group.'), 404);
  66             return false;
  67         }
  68
  69         $this->group = User_group::staticGet('id', $local->group_id);
  70
  71         if (!$this->group) {
  72             // TRANS: Client error displayed when requesting Friends of a Friend feed for a nickname that is not a group.
  73             $this->clientError(_('No such group.'), 404);
  74             return false;
  75         }
  76
  77         common_set_returnto($this->selfUrl());
  78
  79         return true;
  80     }
  81
  82     function handle($args)
  83     {
  84         parent::handle($args);
  85
  86         header('Content-Type: application/rdf+xml');
  87
  88         $this->startXML();
  89         $this->elementStart('rdf:RDF', array('xmlns:rdf' =>
  90                                               'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
  91                                               'xmlns:dcterms' =>
  92                                               'http://purl.org/dc/terms/',
  93                                               'xmlns:sioc' =>
  94                                               'http://rdfs.org/sioc/ns#',
  95                                               'xmlns:foaf' =>
  96                                               'http://xmlns.com/foaf/0.1/',
  97                                               'xmlns:statusnet' =>
  98                                               'http://status.net/ont/',
  99                                               'xmlns' => 'http://xmlns.com/foaf/0.1/'));
 100
 101         $this->showPpd(common_local_url('foafgroup', array('nickname' => $this->nickname)), $this->group->permalink());
 102
 103         $this->elementStart('Group', array('rdf:about' =>
 104                                              $this->group->permalink()));
 105         if ($this->group->fullname) {
 106             $this->element('name', null, $this->group->fullname);
 107         }
 108         if ($this->group->description) {
 109             $this->element('dcterms:description', null, $this->group->description);
 110         }
 111         if ($this->group->nickname) {
 112             $this->element('dcterms:identifier', null, $this->group->nickname);
 113             $this->element('nick', null, $this->group->nickname);
 114         }
 115         foreach ($this->group->getAliases() as $alias) {
 116             $this->element('nick', null, $alias);
 117         }
 118         if ($this->group->homeUrl()) {
 119             $this->element('weblog', array('rdf:resource' => $this->group->homeUrl()));
 120         }
 121         if ($this->group->homepage) {
 122             $this->element('page', array('rdf:resource' => $this->group->homepage));
 123         }
 124         if ($this->group->homepage_logo) {
 125             $this->element('depiction', array('rdf:resource' => $this->group->homepage_logo));
 126         }
 127
 128         $members = $this->group->getMembers();
 129         $member_details = array();
 130         while ($members->fetch()) {
 131             $member_uri = common_local_url('userbyid', array('id'=>$members->id));
 132             $member_details[$member_uri] = array(
 133                                         'nickname' => $members->nickname,
 134                                         'is_admin' => false,
 135                                         );
 136             $this->element('member', array('rdf:resource' => $member_uri));
 137         }
 138
 139         $admins = $this->group->getAdmins();
 140         while ($admins->fetch()) {
 141             $admin_uri = common_local_url('userbyid', array('id'=>$admins->id));
 142             $member_details[$admin_uri]['is_admin'] = true;
 143             $this->element('statusnet:groupAdmin', array('rdf:resource' => $admin_uri));
 144         }
 145
 146         $this->elementEnd('Group');
 147
 148         ksort($member_details);
 149         foreach ($member_details as $uri => $details) {
 150             if ($details['is_admin'])
 151             {
 152                 $this->elementStart('Agent', array('rdf:about' => $uri));
 153                 $this->element('nick', null, $details['nickname']);
 154                 $this->elementStart('account');
 155                 $this->elementStart('sioc:User', array('rdf:about'=>$uri.'#acct'));
 156                 $this->elementStart('sioc:has_function');
 157                 $this->elementStart('statusnet:GroupAdminRole');
 158                 $this->element('sioc:scope', array('rdf:resource' => $this->group->permalink()));
 159                 $this->elementEnd('statusnet:GroupAdminRole');
 160                 $this->elementEnd('sioc:has_function');
 161                 $this->elementEnd('sioc:User');
 162                 $this->elementEnd('account');
 163                 $this->elementEnd('Agent');
 164             }
 165             else
 166             {
 167                 $this->element('Agent', array(
 168                                         'foaf:nick' => $details['nickname'],
 169                                         'rdf:about' => $uri,
 170                                         ));
 171             }
 172         }
 173
 174         $this->elementEnd('rdf:RDF');
 175         $this->endXML();
 176     }
 177
 178     function showPpd($foaf_url, $person_uri)
 179     {
 180         $this->elementStart('Document', array('rdf:about' => $foaf_url));
 181         $this->element('primaryTopic', array('rdf:resource' => $person_uri));
 182         $this->elementEnd('Document');
 183     }
 184
 185 }