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<?php |
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/* |
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Plugin Name: Webfinger |
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Plugin URI: http://wordpress.org/extend/plugins/webfinger/ |
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Description: Webfinger for WordPress |
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Version: 1.2 |
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Author: Matthias Pfefferle |
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Author URI: http://notizblog.org/ |
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*/ |
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|
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/** |
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* returns a users default webfinger |
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* |
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* @param mixed $id_or_name_or_object |
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* @param boolean $protocol |
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* @return string |
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*/ |
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function get_webfinger($id_or_name_or_object = null, $protocol = false) { |
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$webfinger = new WebfingerPlugin(); |
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$user = $webfinger->get_user_by_various($id_or_name_or_object); |
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|
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if ($user) { |
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$webfinger = $user->user_login."@".parse_url(get_bloginfo('url'), PHP_URL_HOST); |
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if ($protocol) { |
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$webfinger = "acct:".$webfinger; |
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} |
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return $webfinger; |
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} else { |
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return null; |
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} |
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} |
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|
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/** |
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* returns all webfingers |
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* |
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* @param mixed $id_or_name_or_object |
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* @param boolean $protocol |
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* |
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* @return array |
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*/ |
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function get_webfingers($id_or_name_or_object = null, $protocol = false) { |
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$webfinger = new WebfingerPlugin(); |
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$user = $webfinger->get_user_by_various($id_or_name_or_object); |
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$webfingers = array(); |
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|
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if ($user) { |
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$webfingers[] = ($protocol ? "acct:" : "").get_webfinger($user); |
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$webfingers[] = get_author_posts_url($user->ID, $user->user_nicename); |
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$webfingers = apply_filters('webfingers', $webfingers); |
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|
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return $webfingers; |
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} else { |
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return array(); |
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} |
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} |
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|
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/** |
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* webfinger |
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* |
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* @author Matthias Pfefferle |
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*/ |
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class WebfingerPlugin { |
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|
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private $user; |
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private $webfinger_uri; |
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|
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|
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/** |
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* adds some query vars |
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* |
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* @param array $vars |
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* @return array |
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*/ |
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public function query_vars($vars) { |
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$vars[] = 'webfinger-uri'; |
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$vars[] = 'webfinger'; |
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$vars[] = 'format'; |
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$vars[] = 'principal'; |
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$vars[] = 'service'; |
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return $vars; |
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} |
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|
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/** |
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* parses the request |
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* |
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* @return mixed |
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*/ |
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public function parse_request() { |
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global $wp_query, $wp; |
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|
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$query_vars = $wp->query_vars; |
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|
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if( array_key_exists('webfinger-uri', $query_vars) ) { |
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if (!$this->user = $this->get_user_by_uri($query_vars['webfinger-uri'])) { |
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header("HTTP/1.0 404 Not Found"); |
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echo "Not Found"; |
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exit; |
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} |
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|
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$this->webfinger_uri = $query_vars['webfinger-uri']; |
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$accept = explode(',', $_SERVER['HTTP_ACCEPT']); |
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|
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if (in_array('application/json', $accept) || (array_key_exists('format', $query_vars) && $query_vars['format'] == "json")) { |
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$this->render_jrd(); |
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} else { |
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$this->render_xrd(); |
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} |
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|
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exit; |
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} |
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} |
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|
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public function render_simple_web_discovery($request) { |
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$this->user = $this->get_user_by_uri($request['principal']); |
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$this->webfinger_uri = $request['principal']; |
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|
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if ($this->user) { |
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$content = $this->generate_content(); |
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|
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$swd = array(); |
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foreach ($content['links'] as $link) { |
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if ($link['rel'] == $request['service']) { |
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$swd['locations'][] = $link['href']; |
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} |
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} |
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|
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$swd = apply_filters('simple_web_discovery', $swd, $this->user, $request['service']); |
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|
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if ($swd) { |
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header("Access-Control-Allow-Origin: *"); |
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header('Content-Type: application/json; charset=' . get_option('blog_charset'), true); |
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echo json_encode($swd); |
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exit; |
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} |
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} |
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|
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header("HTTP/1.0 404 Not Found"); |
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echo "Not Found"; |
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exit; |
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} |
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|
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/** |
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* renders the webfinger file in xml |
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*/ |
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public function render_xrd() { |
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header("Access-Control-Allow-Origin: *"); |
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header('Content-Type: application/xrd+xml; charset=' . get_option('blog_charset'), true); |
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$content_array = $this->generate_content(); |
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|
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echo "<?xml version='1.0' encoding='".get_option('blog_charset')."'?>\n"; |
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echo "<XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0'\n"; |
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// add xml-only namespaces |
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do_action('webfinger_ns'); |
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echo ">\n"; |
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|
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echo $this->jrd_to_xrd($content_array); |
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// add xml-only content |
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do_action('webfinger_xrd', $this->user); |
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|
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echo "\n</XRD>"; |
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} |
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|
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/** |
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* renders the webfinger file in json |
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*/ |
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public function render_jrd() { |
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header("Access-Control-Allow-Origin: *"); |
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header('Content-Type: application/json; charset=' . get_option('blog_charset'), true); |
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$webfinger = $this->generate_content(); |
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|
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echo json_encode($webfinger); |
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} |
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|
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/** |
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* generates the webfinger base array (and activate filter) |
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* |
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* @return array |
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*/ |
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public function generate_content() { |
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$url = get_author_posts_url($this->user->ID, $this->user->user_nicename); |
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$photo = get_user_meta($this->user->ID, 'photo', true); |
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if(!$photo) $photo = 'http://www.gravatar.com/avatar/'.md5($this->user->user_email); |
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|
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$webfinger = array('subject' => $this->webfinger_uri, |
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'aliases' => array($url), |
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'links' => array( |
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array('rel' => 'http://webfinger.net/rel/profile-page', 'type' => 'text/html', 'href' => $url), |
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array('rel' => 'http://webfinger.net/rel/avatar', 'href' => $photo) |
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)); |
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if ($this->user->user_url) { |
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$webfinger['links'][] = array('rel' => 'http://webfinger.net/rel/profile-page', 'type' => 'text/html', 'href' => $this->user->user_url); |
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} |
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$webfinger = apply_filters('webfinger', $webfinger, $this->user); |
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|
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return $webfinger; |
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} |
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|
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/** |
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* recursive helper to generade the xrd-xml from the jrd array |
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* |
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* @param string $host_meta |
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* @return string |
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*/ |
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public function jrd_to_xrd($webfinger) { |
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$xrd = null; |
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|
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foreach ($webfinger as $type => $content) { |
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// print subject |
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if ($type == "subject") { |
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$xrd .= "<Subject>$content</Subject>"; |
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continue; |
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} |
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|
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// print aliases |
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if ($type == "aliases") { |
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foreach ($content as $uri) { |
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$xrd .= "<Alias>".htmlentities($uri)."</Alias>"; |
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} |
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continue; |
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} |
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|
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// print properties |
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if ($type == "properties") { |
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foreach ($content as $type => $uri) { |
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$xrd .= "<Property type='".htmlentities($type)."'>".htmlentities($uri)."</Property>"; |
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} |
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continue; |
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} |
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|
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// print titles |
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if ($type == "titles") { |
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foreach ($content as $key => $value) { |
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if ($key == "default") { |
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$xrd .= "<Title>".htmlentities($value)."</Title>"; |
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} else { |
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$xrd .= "<Title xml:lang='".htmlentities($key)."'>".htmlentities($value)."</Title>"; |
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} |
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} |
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continue; |
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} |
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|
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// print links |
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if ($type == "links") { |
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foreach ($content as $links) { |
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$temp = array(); |
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$cascaded = false; |
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$xrd .= "<Link "; |
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|
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foreach ($links as $key => $value) { |
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if (is_array($value)) { |
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$temp[$key] = $value; |
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$cascaded = true; |
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} else { |
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$xrd .= htmlentities($key)."='".htmlentities($value)."' "; |
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} |
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} |
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if ($cascaded) { |
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$xrd .= ">"; |
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$xrd .= $this->jrd_to_xrd($temp); |
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$xrd .= "</Link>"; |
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} else { |
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$xrd .= " />"; |
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} |
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} |
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|
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continue; |
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} |
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} |
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|
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return $xrd; |
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} |
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|
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/** |
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* returns a Userobject |
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* |
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* @param string $uri |
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* @return stdClass |
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*/ |
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private function get_user_by_uri($uri) { |
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global $wpdb; |
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|
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$uri = urldecode($uri); |
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|
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if (preg_match("~^https?://~i", $uri)) { |
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// check if url matches with a |
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// users profile url |
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foreach (get_users_of_blog() as $user) { |
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if (rtrim(str_replace("www.", "", get_author_posts_url($user->ID, $user->user_nicename)), "/") == |
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rtrim(str_replace("www.", "", $uri), "/")) { |
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return $user; |
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} |
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} |
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} elseif (preg_match('/^([a-zA-Z]+:)?([^@]+)@([a-zA-Z0-9._-]+)$/i', $uri, $array)) { |
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$username = $array[2]; |
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$host = $array[3]; |
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$email = $username."@".$host; |
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|
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if ($host == parse_url(get_bloginfo('url'), PHP_URL_HOST)) { |
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$sql = "SELECT * FROM $wpdb->users u INNER JOIN $wpdb->usermeta um ON u.id=um.user_id WHERE u.user_email = '$email' OR |
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(um.meta_key = 'jabber' AND um.meta_value = '$email') OR |
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u.user_login = '$username' LIMIT 1;"; |
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$user = $wpdb->get_results($wpdb->prepare($sql)); |
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if (!empty($user)) { |
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return $user[0]; |
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} |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* add the host meta information |
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*/ |
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public function add_host_meta_link() { |
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echo "<Link rel='lrdd' template='".get_option('siteurl')."/?webfinger-uri={uri}' type='application/xrd+xml' />"; |
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} |
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|
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/** |
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* add the host meta information |
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*/ |
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public function add_host_meta_info($array) { |
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$array["links"][] = array("rel" => "lrdd", "template" => get_option('siteurl')."/?webfinger-uri={uri}", "type" => "application/xrd+xml"); |
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$array["links"][] = array("rel" => "lrdd", "template" => get_option('siteurl')."/?webfinger-uri={uri}?format=json", "type" => "application/json"); |
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|
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return $array; |
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} |
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|
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/** |
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* adds lrdd-header-link to author profile pages |
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*/ |
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public function add_html_link() { |
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global $wp_query; |
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|
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if (is_author() && !is_feed()) { |
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$author = $wp_query->get_queried_object(); |
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$url = get_author_posts_url($author->ID, $author->user_nicename); |
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|
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echo "\n"; |
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echo "<link rel='lrdd' href='".get_option('siteurl')."/?webfinger-uri=".urlencode($url)."' type='application/xrd+xml' />"; |
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echo "\n"; |
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} |
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} |
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|
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/** |
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* prints webfinger part on the user-site |
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* |
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* @param stdClass $user |
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*/ |
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public function user_profile_infos($user) { |
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$webfingers = get_webfingers($user, true); |
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?> |
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<h3 id="webfinger">Webfinger</h3> |
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|
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<table class="form-table"> |
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<tr> |
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<th scope="row"><?php _e('Your Identifier')?></th> |
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<td> |
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<ul> |
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<?php foreach ($webfingers as $webfinger) { ?> |
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<li><?php echo $webfinger ?></li> |
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<?php } ?> |
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</ul> |
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|
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<a href="http://webfinger.org/lookup/<?php echo get_webfinger($user); ?>" target="_blank">Check your webfinger!</a> |
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</td> |
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</tr> |
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</table> |
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<?php |
| 370 |
} |
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|
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/** |
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* add a settings link next to deactive / edit |
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* |
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* @param array $links |
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* @param string $file |
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* @return array |
| 378 |
*/ |
| 379 |
public function settings_link( $links, $file ) { |
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if( preg_match("/webfinger/i", $file) && function_exists( "admin_url" ) ) { |
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$settings_link = '<a href="' . admin_url( 'profile.php#webfinger' ) . '">' . __('Identifiers') . '</a>'; |
| 382 |
array_unshift( $links, $settings_link ); |
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} |
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return $links; |
| 385 |
} |
| 386 |
|
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/** |
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* Convenience method to get user data by ID, username, object or from current user. |
| 389 |
* |
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* @param mixed $id_or_name_or_object the username, ID or object. If not provided, the current user will be used. |
| 391 |
* @return bool|object False on failure, User DB row object |
| 392 |
* |
| 393 |
* @author Will Norris |
| 394 |
* @see get_userdata_by_various() # DiSo OpenID-Plugin |
| 395 |
*/ |
| 396 |
public function get_user_by_various($id_or_name_or_object = null) { |
| 397 |
if ( $id_or_name_or_object === null ) { |
| 398 |
$user = wp_get_current_user(); |
| 399 |
if ($user == null) return false; |
| 400 |
return $user->data; |
| 401 |
} else if ( is_object($id_or_name_or_object) ) { |
| 402 |
return $id_or_name_or_object; |
| 403 |
} else if ( is_numeric($id_or_name_or_object) ) { |
| 404 |
return get_userdata($id_or_name_or_object); |
| 405 |
} else { |
| 406 |
return get_userdatabylogin($id_or_name_or_object); |
| 407 |
} |
| 408 |
} |
| 409 |
} |
| 410 |
|
| 411 |
function webfinger_init() { |
| 412 |
$webfinger = new WebfingerPlugin(); |
| 413 |
|
| 414 |
add_action('well_known_simple-web-discovery', array(&$webfinger, 'render_simple_web_discovery'), 2); |
| 415 |
add_filter('query_vars', array(&$webfinger, 'query_vars')); |
| 416 |
add_action('parse_request', array(&$webfinger, 'parse_request')); |
| 417 |
add_action('wp_head', array(&$webfinger, 'add_html_link')); |
| 418 |
add_filter('host_meta', array(&$webfinger, 'add_host_meta_info')); |
| 419 |
add_filter('plugin_action_links', array(&$webfinger, 'settings_link'), 10, 2); |
| 420 |
|
| 421 |
// add profile parts |
| 422 |
add_action('show_user_profile', array(&$webfinger, 'user_profile_infos')); |
| 423 |
add_action('edit_user_profile', array(&$webfinger, 'user_profile_infos')); |
| 424 |
} |
| 425 |
|
| 426 |
webfinger_init(); |
| 427 |
?> |
