initial commit

plugin.php

@@ -0,0 +1,71 @@
+<?php
+/*
+Plugin Name: ./well-known/
+Plugin URI: http://notizblog.org/
+Description: This plugin enables "Well-Known URIs" support for WordPress (RFC 5785: http://tools.ietf.org/html/rfc5785).
+Version: 0.1
+Author: Matthias Pfefferle
+Author URI: http://notizblog.org/
+*/
+
+//
+add_filter('query_vars', array('WellKnown', 'queryVars'));
+add_action('parse_request', array('WellKnown', 'delegateRequest'));
+add_action('generate_rewrite_rules', array('WellKnown', 'rewriteRules'));
+
+/**
+ * well-known class
+ *
+ * @author Matthias Pfefferle
+ */
+class WellKnown {
+  /**
+   * Add 'well-known' as a valid query variables.
+   *
+   * @param array $vars
+   * @return array
+   */
+  function queryVars($vars) {
+    $vars[] = 'well-known';
+
+    return $vars;
+  }
+
+  /**
+   * Add rewrite rules for .well-known.
+   *
+   * @param object $wp_rewrite WP_Rewrite object
+   */
+  function rewriteRules($wp_rewrite) {
+    $wellKnownRules = array(
+    	'.well-known/(.+)' => 'index.php?well-known='.$wp_rewrite->preg_index(1),
+  	);
+
+  	$wp_rewrite->rules = $wellKnownRules + $wp_rewrite->rules;
+  }
+
+  /**
+   * delegates the request to the matching (registered) class
+   */
+  function delegateRequest() {
+    global $wp_query, $wp;
+
+    $wellKnown = array();
+    $wellKnown = apply_filters('well-known', $wellKnown);
+
+    $queryVars = $wp->query_vars;
+
+    if( array_key_exists('well-known', $queryVars) ) {
+      if (array_key_exists($queryVars['well-known'], $wellKnown)) {
+        $remoteFunction = $wellKnown[$queryVars['well-known']];
+
+        call_user_func($remoteFunction);
+      } else {
+        header("HTTP/1.1 404 Not Found");
+        echo "there is no such uri: /.well-known/".$queryVars['well-known'];
+      }
+
+      exit;
+    }
+  }
+}