--- a/lib/openid-php/Auth/Yadis/HTTPFetcher.php
+++ b/lib/openid-php/Auth/Yadis/HTTPFetcher.php
@@ -1,1 +1,175 @@
+<?php
 
+/**
+ * This module contains the HTTP fetcher interface
+ *
+ * PHP versions 4 and 5
+ *
+ * LICENSE: See the COPYING file included in this distribution.
+ *
+ * @package OpenID
+ * @author JanRain, Inc. <openid@janrain.com>
+ * @copyright 2005-2008 Janrain, Inc.
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache
+ */
+
+/**
+ * Require logging functionality
+ */
+require_once "Auth/OpenID.php";
+
+define('Auth_OpenID_FETCHER_MAX_RESPONSE_KB', 1024);
+define('Auth_OpenID_USER_AGENT', 
+       'php-openid/'.Auth_OpenID_VERSION.' (php/'.phpversion().')');
+
+class Auth_Yadis_HTTPResponse {
+    function Auth_Yadis_HTTPResponse($final_url = null, $status = null,
+                                         $headers = null, $body = null)
+    {
+        $this->final_url = $final_url;
+        $this->status = $status;
+        $this->headers = $headers;
+        $this->body = $body;
+    }
+}
+
+/**
+ * This class is the interface for HTTP fetchers the Yadis library
+ * uses.  This interface is only important if you need to write a new
+ * fetcher for some reason.
+ *
+ * @access private
+ * @package OpenID
+ */
+class Auth_Yadis_HTTPFetcher {
+
+    var $timeout = 20; // timeout in seconds.
+
+    /**
+     * Return whether a URL can be fetched.  Returns false if the URL
+     * scheme is not allowed or is not supported by this fetcher
+     * implementation; returns true otherwise.
+     *
+     * @return bool
+     */
+    function canFetchURL($url)
+    {
+        if ($this->isHTTPS($url) && !$this->supportsSSL()) {
+            Auth_OpenID::log("HTTPS URL unsupported fetching %s",
+                             $url);
+            return false;
+        }
+
+        if (!$this->allowedURL($url)) {
+            Auth_OpenID::log("URL fetching not allowed for '%s'",
+                             $url);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Return whether a URL should be allowed. Override this method to
+     * conform to your local policy.
+     *
+     * By default, will attempt to fetch any http or https URL.
+     */
+    function allowedURL($url)
+    {
+        return $this->URLHasAllowedScheme($url);
+    }
+
+    /**
+     * Does this fetcher implementation (and runtime) support fetching
+     * HTTPS URLs?  May inspect the runtime environment.
+     *
+     * @return bool $support True if this fetcher supports HTTPS
+     * fetching; false if not.
+     */
+    function supportsSSL()
+    {
+        trigger_error("not implemented", E_USER_ERROR);
+    }
+
+    /**
+     * Is this an https URL?
+     *
+     * @access private
+     */
+    function isHTTPS($url)
+    {
+        return (bool)preg_match('/^https:\/\//i', $url);
+    }
+
+    /**
+     * Is this an http or https URL?
+     *
+     * @access private
+     */
+    function URLHasAllowedScheme($url)
+    {
+        return (bool)preg_match('/^https?:\/\//i', $url);
+    }
+
+    /**
+     * @access private
+     */
+    function _findRedirect($headers, $url)
+    {
+        foreach ($headers as $line) {
+            if (strpos(strtolower($line), "location: ") === 0) {
+                $parts = explode(" ", $line, 2);
+                $loc = $parts[1];
+                $ppos = strpos($loc, "://");
+                if ($ppos === false || $ppos > strpos($loc, "/")) {
+                  /* no host; add it */
+                  $hpos = strpos($url, "://");
+                  $prt = substr($url, 0, $hpos+3);
+                  $url = substr($url, $hpos+3);
+                  if (substr($loc, 0, 1) == "/") {
+                    /* absolute path */
+                    $fspos = strpos($url, "/");
+                    if ($fspos) $loc = $prt.substr($url, 0, $fspos).$loc;
+                    else $loc = $prt.$url.$loc;
+                  } else {
+                    /* relative path */
+                    $pp = $prt;
+                    while (1) {
+                      $xpos = strpos($url, "/");
+                      if ($xpos === false) break;
+                      $apos = strpos($url, "?");
+                      if ($apos !== false && $apos < $xpos) break;
+                      $apos = strpos($url, "&");
+                      if ($apos !== false && $apos < $xpos) break;
+                      $pp .= substr($url, 0, $xpos+1);
+                      $url = substr($url, $xpos+1);
+                    }
+                    $loc = $pp.$loc;
+                  }
+                }
+                return $loc;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Fetches the specified URL using optional extra headers and
+     * returns the server's response.
+     *
+     * @param string $url The URL to be fetched.
+     * @param array $extra_headers An array of header strings
+     * (e.g. "Accept: text/html").
+     * @return mixed $result An array of ($code, $url, $headers,
+     * $body) if the URL could be fetched; null if the URL does not
+     * pass the URLHasAllowedScheme check or if the server's response
+     * is malformed.
+     */
+    function get($url, $headers = null)
+    {
+        trigger_error("not implemented", E_USER_ERROR);
+    }
+}
+
+