/usr/share/wordpress/wp-content/plugins/xrds-simple/xrds-simple.php is in wordpress-xrds-simple 1.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
Plugin Name: XRDS-Simple
Plugin URI: https://github.com/diso/wordpress-xrds-simple
Description: Provides framework for other plugins to advertise services via XRDS.
Version: 1.2
Author: DiSo Development Team
Author URI: http://diso-project.org/
License: MIT license (http://www.opensource.org/licenses/mit-license.php)
*/
// Public Functions
/**
* Convenience function for adding a new XRD to the XRDS structure.
*
* @param array $xrds current XRDS-Simple structure
* @param string $id ID of new XRD to add
* @param array $type service types for the new XRD
* @param string $expires expiration date for XRD, formatted as xs:dateTime
* @return array updated XRDS-Simple structure
* @since 1.0
*/
function xrds_add_xrd($xrds, $id, $type=array(), $expires=false) {
if(!is_array($xrds)) $xrds = array();
$xrds[$id] = array('type' => $type, 'expires' => $expires, 'services' => array());
return $xrds;
}
/**
* Convenience function for adding a new service endpoint to the XRDS structure.
*
* @param array $xrds current XRDS-Simple structure
* @param string $id ID of the XRD to add the new service to. If no XRD exists with the specified ID,
* a new one will be created.
* @param string $name human readable name of the service
* @param array $content content to be included in the service definition. Format:
* <code>
* array(
* 'NodeName (ie, Type)' => array(
* array('attribute' => 'value', 'content' => 'content string'),
* ...
* ),
* ...
* )
* </code>
* @param int $priority service priorty
* @return array updated XRDS-Simple structure
* @since 1.0
*/
function xrds_add_service($xrds, $xrd_id, $name, $content, $priority=10) {
if (!array_key_exists($xrd_id, $xrds) || !is_array($xrds[$xrd_id])) {
$xrds = xrds_add_xrd($xrds, $xrd_id);
}
$xrds[$xrd_id]['services'][$name] = array('priority' => $priority, 'content' => $content);
return $xrds;
}
/**
* Convenience function for adding a new service with minimal options.
* Services will always be added to the 'main' XRD with the default priority.
* No additional parameters such as httpMethod on URIs can be passed. If those
* are necessary, use xrds_add_service().
*
* @param array $xrds current XRDS-Simple structure
* @param string $name human readable name of the service
* @param mixed $type one type (string) or array of multiple types
* @param mixed $uri one URI (string) or array of multiple URIs
* @return array updated XRDS-Simple structure
* @since 1.0
*/
function xrds_add_simple_service($xrds, $name, $type, $uri) {
if (!is_array($type)) $type = array($type);
if (!is_array($uri)) $uri = array($uri);
$service = array('Type' => array(), 'URI' => array());
foreach ($type as $t) {
$service['Type'][] = array('content' => $t);
}
foreach ($uri as $u) {
$service['URI'][] = array('content' => $u);
}
return xrds_add_service($xrds, 'main', $name, $service);
}
// Private Functions
add_action('wp_head', 'xrds_meta');
add_action('parse_request', 'xrds_parse_request');
add_action('admin_menu', 'xrds_admin_menu');
add_filter('xrds_simple', 'xrds_atompub_service');
/**
* Print HTML meta tags, advertising the location of the XRDS document.
*/
function xrds_meta() {
echo '<meta http-equiv="X-XRDS-Location" content="'.get_bloginfo('url').'/?xrds" />'."\n";
echo '<meta http-equiv="X-Yadis-Location" content="'.get_bloginfo('url').'/?xrds" />'."\n";
}
/**
* Build the XRDS-Simple document.
*
* @return string XRDS-Simple document
*/
function xrds_write() {
$xrds = array(
'main' => array(
'type' => array('xri://$xrds*simple'),
),
);
$xrds = apply_filters('xrds_simple', $xrds);
//make sure main is last
if($xrds['main']) {
$o = $xrds['main'];
unset($xrds['main']);
$xrds['main'] = $o;
}
$xml = '<?xml version="1.0" encoding="UTF-8" ?>'."\n";
$xml .= '<xrds:XRDS xmlns:xrds="xri://$xrds" xmlns="xri://$xrd*($v*2.0)" xmlns:simple="http://xrds-simple.net/core/1.0" xmlns:openid="http://openid.net/xmlns/1.0">'."\n";
foreach($xrds as $id => $xrd) {
$xml .= ' <XRD xml:id="'.htmlspecialchars($id).'" version="2.0">' . "\n";
if(!array_key_exists('type', $xrd) || !$xrd['type']) $xrd['type'] = array();
if(!is_array($xrd['type'])) $xrd['type'] = array($xrd['type']);
foreach($xrd['type'] as $type)
$xml .= ' <Type>'.htmlspecialchars($type).'</Type>'."\n";
if(array_key_exists('expires', $xrd) && $xrd['expires'])
$xml .= ' <Expires>'.htmlspecialchars($xrd['expires']).'</Expires>'."\n";
foreach($xrd['services'] as $name => $service) {
$xml .= "\n".' <!-- ' . $name . ' -->'."\n";
$xml .= ' <Service priority="'.floor($service['priority']).'">'."\n";
foreach($service['content'] as $node => $nodes) {
if(!is_array($nodes)) $nodes = array($nodes);//sanity check
foreach($nodes as $attr) {
$xml .= ' <'.htmlspecialchars($node);
if(!is_array($attr)) $attr = array('content' => $attr);//sanity check
foreach($attr as $name => $v) {
if($name == 'content') continue;
$xml .= ' '.htmlspecialchars($name).'="'.htmlspecialchars($v).'"';
}//end foreach attr
$xml .= '>'.htmlspecialchars($attr['content']).'</'.htmlspecialchars($node).'>'."\n";
}//end foreach content
}//end foreach
$xml .= ' </Service>'."\n";
}//end foreach services
$xml .= ' </XRD>'."\n";
}//end foreach
$xml .= '</xrds:XRDS>'."\n";
return $xml;
}
/**
* Handle options page for XRDS-Simple.
*/
function xrds_options_page() {
echo "<div class=\"wrap\">\n";
echo "<h2>XRDS-Simple</h2>\n";
echo '<h3>XRDS Document</h3>';
echo '<pre>';
echo htmlentities(xrds_write());
echo '</pre>';
echo '<h3>Registered Filters</h3>';
global $wp_filter;
if (array_key_exists('xrds_simple', $wp_filter) && !empty($wp_filter['xrds_simple'])) {
echo '<ul>';
foreach ($wp_filter['xrds_simple'] as $priority) {
foreach ($priority as $idx => $data) {
$function = $data['function'];
if (is_array($function)) {
list($class, $func) = $function;
$function = "$class::$func";
}
echo '<li>'.$function.'</li>';
}
}
echo '</ul>';
} else {
echo '<p>No registered filters.</p>';
}
echo '</div>';
}//end xrds_options_page
function xrds_plugin_actions($links, $file) {
static $this_plugin;
if(!$this_plugin) $this_plugin = plugin_basename(__FILE__);
if($file == $this_plugin) {
$settings_link = '<a href="options-general.php?page=xrds-simple" style="font-weight:bold;">Settings</a>';
$links[] = $settings_link;
}//end if this_plugin
return $links;
}//end xrds_plugin_actions
/**
* Setup admin menu for XRDS.
*/
function xrds_admin_menu() {
add_options_page('XRDS-Simple', 'XRDS-Simple', 'manage_options', 'xrds-simple', 'xrds_options_page');
add_filter('plugin_action_links', 'xrds_plugin_actions', 10, 2);
}
/**
* Parse the WordPress request. If the request is for the XRDS document, handle it accordingly.
*
* @param object $wp WP instance for the current request
*/
function xrds_parse_request($wp) {
$accept = array();
if (isset($_SERVER['HTTP_ACCEPT'])) {
$accept = explode(',', $_SERVER['HTTP_ACCEPT']);
}
if(isset($_GET['xrds']) || in_array('application/xrds+xml', $accept)) {
if (isset($_REQUEST['format']) && $_REQUEST['format'] == 'text') {
header('Content-type: text/plain');
} else {
header('Content-type: application/xrds+xml');
}
echo xrds_write();
exit;
} else {
@header('X-XRDS-Location: '.get_bloginfo('url').'/?xrds');
@header('X-Yadis-Location: '.get_bloginfo('url').'/?xrds');
}
}
/**
* Contribute the AtomPub Service to XRDS-Simple.
*
* @param array $xrds current XRDS-Simple array
* @return array updated XRDS-Simple array
*/
function xrds_atompub_service($xrds) {
$xrds = xrds_add_service($xrds, 'main', 'AtomPub Service',
array(
'Type' => array( array('content' => 'http://www.w3.org/2007/app') ),
'MediaType' => array( array('content' => 'application/atomsvc+xml') ),
'URI' => array( array('content' => get_bloginfo('wpurl').'/wp-app.php/service' ) ),
)
);
return $xrds;
}
/**
* Check if data is well-formed XML.
*
* @param string $data XML structure to test
* @return mixed FALSE if data is well-formed XML, XML error code otherwise
*/
function xrds_checkXML($data) {//returns FALSE if $data is well-formed XML, errorcode otherwise
$rtrn = 0;
$theParser = xml_parser_create();
if(!xml_parse_into_struct($theParser,$data,$vals)) {
$errorcode = xml_get_error_code($theParser);
if($errorcode != XML_ERROR_NONE && $errorcode != 27)
$rtrn = $errorcode;
}//end if ! parse
xml_parser_free($theParser);
return $rtrn;
}
?>
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