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         }
  48
  49         $this->nickname = common_canonical_nickname($nickname_arg);
  50
  51         // Permanent redirect on non-canonical nickname
  52
  53         if ($nickname_arg != $this->nickname) {
  54             common_redirect(common_local_url('foafgroup',
  55                                              array('nickname' => $this->nickname)),
  56                             301);
  57             return false;
  58         }
  59
  60         $local = Local_group::getKV('nickname', $this->nickname);
  61
  62         if (!$local) {
  63             // TRANS: Client error displayed when requesting Friends of a Friend feed for a non-local group.
  64             $this->clientError(_('No such group.'), 404);
  65         }
  66
  67         $this->group = User_group::getKV('id', $local->group_id);
  68
  69         if (!$this->group) {
  70             // TRANS: Client error displayed when requesting Friends of a Friend feed for a nickname that is not a group.
  71             $this->clientError(_('No such group.'), 404);
  72         }
  73
  74         common_set_returnto($this->selfUrl());
  75
  76         return true;
  77     }
  78
  79     function handle($args)
  80     {
  81         parent::handle($args);
  82
  83         header('Content-Type: application/rdf+xml');
  84
  85         $this->startXML();
  86         $this->elementStart('rdf:RDF', array('xmlns:rdf' =>
  87                                               'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
  88                                               'xmlns:dcterms' =>
  89                                               'http://purl.org/dc/terms/',
  90                                               'xmlns:sioc' =>
  91                                               'http://rdfs.org/sioc/ns#',
  92                                               'xmlns:foaf' =>
  93                                               'http://xmlns.com/foaf/0.1/',
  94                                               'xmlns:statusnet' =>
  95                                               'http://status.net/ont/',
  96                                               'xmlns' => 'http://xmlns.com/foaf/0.1/'));
  97
  98         $this->showPpd(common_local_url('foafgroup', array('nickname' => $this->nickname)), $this->group->permalink());
  99
 100         $this->elementStart('Group', array('rdf:about' =>
 101                                              $this->group->permalink()));
 102         if ($this->group->fullname) {
 103             $this->element('name', null, $this->group->fullname);
 104         }
 105         if ($this->group->description) {
 106             $this->element('dcterms:description', null, $this->group->description);
 107         }
 108         if ($this->group->nickname) {
 109             $this->element('dcterms:identifier', null, $this->group->nickname);
 110             $this->element('nick', null, $this->group->nickname);
 111         }
 112         foreach ($this->group->getAliases() as $alias) {
 113             $this->element('nick', null, $alias);
 114         }
 115         if ($this->group->homeUrl()) {
 116             $this->element('weblog', array('rdf:resource' => $this->group->homeUrl()));
 117         }
 118         if ($this->group->homepage) {
 119             $this->element('page', array('rdf:resource' => $this->group->homepage));
 120         }
 121         if ($this->group->homepage_logo) {
 122             $this->element('depiction', array('rdf:resource' => $this->group->homepage_logo));
 123         }
 124
 125         $members = $this->group->getMembers();
 126         $member_details = array();
 127         while ($members->fetch()) {
 128             $member_uri = common_local_url('userbyid', array('id'=>$members->id));
 129             $member_details[$member_uri] = array(
 130                                         'nickname' => $members->nickname,
 131                                         'is_admin' => false,
 132                                         );
 133             $this->element('member', array('rdf:resource' => $member_uri));
 134         }
 135
 136         $admins = $this->group->getAdmins();
 137         while ($admins->fetch()) {
 138             $admin_uri = common_local_url('userbyid', array('id'=>$admins->id));
 139             $member_details[$admin_uri]['is_admin'] = true;
 140             $this->element('statusnet:groupAdmin', array('rdf:resource' => $admin_uri));
 141         }
 142
 143         $this->elementEnd('Group');
 144
 145         ksort($member_details);
 146         foreach ($member_details as $uri => $details) {
 147             if ($details['is_admin'])
 148             {
 149                 $this->elementStart('Agent', array('rdf:about' => $uri));
 150                 $this->element('nick', null, $details['nickname']);
 151                 $this->elementStart('account');
 152                 $this->elementStart('sioc:User', array('rdf:about'=>$uri.'#acct'));
 153                 $this->elementStart('sioc:has_function');
 154                 $this->elementStart('statusnet:GroupAdminRole');
 155                 $this->element('sioc:scope', array('rdf:resource' => $this->group->permalink()));
 156                 $this->elementEnd('statusnet:GroupAdminRole');
 157                 $this->elementEnd('sioc:has_function');
 158                 $this->elementEnd('sioc:User');
 159                 $this->elementEnd('account');
 160                 $this->elementEnd('Agent');
 161             }
 162             else
 163             {
 164                 $this->element('Agent', array(
 165                                         'foaf:nick' => $details['nickname'],
 166                                         'rdf:about' => $uri,
 167                                         ));
 168             }
 169         }
 170
 171         $this->elementEnd('rdf:RDF');
 172         $this->endXML();
 173     }
 174
 175     function showPpd($foaf_url, $person_uri)
 176     {
 177         $this->elementStart('Document', array('rdf:about' => $foaf_url));
 178         $this->element('primaryTopic', array('rdf:resource' => $person_uri));
 179         $this->elementEnd('Document');
 180     }
 181
 182 }