FOAF for Groups.

1 files changed, 173 insertions, 0 deletions

diff --git a/actions/foafgroup.php b/actions/foafgroup.php
new file mode 100644
index 000000000..f5fd7fe88
--- /dev/null
+++ b/actions/foafgroup.php
@@ -0,0 +1,173 @@
+<?php
+/*
+ * StatusNet the distributed open-source microblogging tool
+ * Copyright (C) 2008, 2009, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Mail
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @author    Toby Inkster <mail@tobyinkster.co.uk>
+ * @copyright 2009 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+class FoafGroupAction extends Action
+{
+    function isReadOnly($args)
+    {
+        return true;
+    }
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        $nickname_arg = $this->arg('nickname');
+
+        if (empty($nickname_arg)) {
+            $this->clientError(_('No such group.'), 404);
+            return false;
+        }
+
+        $this->nickname = common_canonical_nickname($nickname_arg);
+
+        // Permanent redirect on non-canonical nickname
+
+        if ($nickname_arg != $this->nickname) {
+            common_redirect(common_local_url('foafgroup',
+                                             array('nickname' => $this->nickname)),
+                            301);
+            return false;
+        }
+
+        $this->group = User_group::staticGet('nickname', $this->nickname);
+
+        if (!$this->group) {
+            $this->clientError(_('No such group.'), 404);
+            return false;
+        }
+
+        common_set_returnto($this->selfUrl());
+
+        return true;
+    }
+
+    function handle($args)
+    {
+        parent::handle($args);
+
+        header('Content-Type: application/rdf+xml');
+
+        $this->startXML();
+        $this->elementStart('rdf:RDF', array('xmlns:rdf' =>
+                                              'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+                                              'xmlns:dcterms' =>
+                                              'http://purl.org/dc/terms/',
+                                              'xmlns:sioc' =>
+                                              'http://rdfs.org/sioc/ns#',
+                                              'xmlns:foaf' =>
+                                              'http://xmlns.com/foaf/0.1/',
+                                              'xmlns:statusnet' =>
+                                              'http://status.net/ont/',
+                                              'xmlns' => 'http://xmlns.com/foaf/0.1/'));
+
+        $this->showPpd(common_local_url('foafgroup', array('nickname' => $this->nickname)), $this->group->permalink());
+
+        $this->elementStart('Group', array('rdf:about' =>
+                                             $this->group->permalink()));
+        if ($this->group->fullname) {
+            $this->element('name', null, $this->group->fullname);
+        }
+        if ($this->group->description) {
+            $this->element('dcterms:description', null, $this->group->description);
+        }
+        if ($this->group->nickname) {
+            $this->element('dcterms:identifier', null, $this->group->nickname);
+            $this->element('nick', null, $this->group->nickname);
+        }
+        foreach ($this->group->getAliases() as $alias) {
+            $this->element('nick', null, $alias);
+        }
+        if ($this->group->homeUrl()) {
+            $this->element('weblog', array('rdf:resource' => $this->group->homeUrl()));
+        }
+        if ($this->group->homepage) {
+            $this->element('page', array('rdf:resource' => $this->group->homepage));
+        }
+        if ($this->group->homepage_logo) {
+            $this->element('depiction', array('rdf:resource' => $this->group->homepage_logo));
+        }
+        
+        $members = $this->group->getMembers();
+        $member_details = array();
+        while ($members->fetch()) {
+            $member_uri = common_local_url('userbyid', array('id'=>$members->id));
+            $member_details[$member_uri] = array(
+                                        'nickname' => $members->nickname
+                                        );
+            $this->element('member', array('rdf:resource' => $member_uri));
+        }
+        
+        $admins = $this->group->getAdmins();
+        while ($admins->fetch()) {
+            $admin_uri = common_local_url('userbyid', array('id'=>$admins->id));
+            $member_details[$admin_uri]['is_admin'] = true;
+            $this->element('statusnet:groupAdmin', array('rdf:resource' => $admin_uri));
+        }
+
+        $this->elementEnd('Group');
+        
+        ksort($member_details);
+        foreach ($member_details as $uri => $details) {
+            if ($details['is_admin'])
+            {
+                $this->elementStart('Agent', array('rdf:about' => $uri));
+                $this->element('nick', null, $details['nickname']);
+                $this->elementStart('holdsAccount');
+                $this->elementStart('sioc:User', array('rdf:about'=>$uri.'#acct'));
+                $this->elementStart('sioc:has_function');
+                $this->elementStart('statusnet:GroupAdminRole');
+                $this->element('sioc:scope', array('rdf:resource' => $this->group->permalink()));
+                $this->elementEnd('statusnet:GroupAdminRole');
+                $this->elementEnd('sioc:has_function');
+                $this->elementEnd('sioc:User');
+                $this->elementEnd('holdsAccount');
+                $this->elementEnd('Agent');
+            }
+            else
+            {
+                $this->element('Agent', array(
+                                        'foaf:nick' => $details['nickname'],
+                                        'rdf:about' => $uri,
+                                        ));
+            }
+        }
+        
+        $this->elementEnd('rdf:RDF');
+        $this->endXML();
+    }
+
+    function showPpd($foaf_url, $person_uri)
+    {
+        $this->elementStart('Document', array('rdf:about' => $foaf_url));
+        $this->element('primaryTopic', array('rdf:resource' => $person_uri));
+        $this->elementEnd('Document');
+    }
+
+}
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