Move user xrd action to core and use hooks to extend

Moved the Webfinger user XRD action from the OStatus plugin to core.
Added hooks to add OStatus-specific stuff, but kept general stuff in
the core.

1 files changed, 109 insertions, 0 deletions

diff --git a/lib/xrdaction.php b/lib/xrdaction.php
new file mode 100644
index 000000000..85a70f8b3
--- /dev/null
+++ b/lib/xrdaction.php
@@ -0,0 +1,109 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @maintainer James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+class XrdAction extends Action
+{
+    public $uri;
+
+    public $user;
+
+    public $xrd;
+
+    function handle()
+    {
+        $nick    = $this->user->nickname;
+        $profile = $this->user->getProfile();
+
+        if (empty($this->xrd)) {
+            $xrd = new XRD();
+        } else {
+            $xrd = $this->xrd;
+        }
+
+        if (empty($xrd->subject)) {
+            $xrd->subject = Discovery::normalize($this->uri);
+        }
+
+	if (Event::handle('StartXrdActionAliases', array(&$xrd, $this->user))) {
+	    
+	    // Possible aliases for the user
+	    
+	    $uris = array($this->user->uri, $profile->profileurl);
+	    
+	    // FIXME: Webfinger generation code should live somewhere on its own
+	    
+	    $path = common_config('site', 'path');
+	    
+	    if (empty($path)) {
+		$uris[] = sprintf('acct:%s@%s', $nick, common_config('site', 'server'));
+	    }
+	    
+	    foreach ($uris as $uri) {
+		if ($uri != $xrd->subject) {
+		    $xrd->alias[] = $uri;
+		}
+	    }
+	    
+	    Event::handle('EndXrdActionAliases', array(&$xrd, $this->user));
+	}
+
+	if (Event::handle('StartXrdActionLinks', array(&$xrd, $this->user))) {
+	    
+	    $xrd->links[] = array('rel' => Discovery::PROFILEPAGE,
+				  'type' => 'text/html',
+				  'href' => $profile->profileurl);
+	    
+	    // hCard
+	    $xrd->links[] = array('rel' => Discovery::HCARD,
+				  'type' => 'text/html',
+				  'href' => common_local_url('hcard', array('nickname' => $nick)));
+	    
+	    // XFN
+	    $xrd->links[] = array('rel' => 'http://gmpg.org/xfn/11',
+				  'type' => 'text/html',
+				  'href' => $profile->profileurl);
+	    // FOAF
+	    $xrd->links[] = array('rel' => 'describedby',
+				  'type' => 'application/rdf+xml',
+				  'href' => common_local_url('foaf',
+							     array('nickname' => $nick)));
+	    
+	    $xrd->links[] = array('rel' => Discovery::UPDATESFROM,
+				  'href' => common_local_url('ApiTimelineUser',
+							     array('id' => $this->user->id,
+								   'format' => 'atom')),
+				  'type' => 'application/atom+xml');
+	    
+	    Event::handle('EndXrdActionLinks', array(&$xrd, $this->user));
+	}
+	    
+
+        header('Content-type: application/xrd+xml');
+        print $xrd->toXML();
+    }
+}