49      * Return whether a URL can be fetched.  Returns false if the URL
55     function canFetchURL($url)  argument
57         if ($this->isHTTPS($url) && !$this->supportsSSL()) {
58             Auth_OpenID::log("HTTPS URL unsupported fetching %s",
59                              $url);
63         if (!$this->allowedURL($url)) {
64             Auth_OpenID::log("URL fetching not allowed for '%s'",
65                              $url);
73      * Return whether a URL should be allowed. Override this method to
76      * By default, will attempt to fetch any http or https URL.
78     function allowedURL($url)  argument
80         return $this->URLHasAllowedScheme($url);
96      * Is this an https URL?
100     function isHTTPS($url)  argument
102         return (bool)preg_match('/^https:\/\//i', $url);
106      * Is this an http or https URL?
110     function URLHasAllowedScheme($url)  argument
112         return (bool)preg_match('/^https?:\/\//i', $url);
118     function _findRedirect($headers, $url)  argument
127                   $hpos = strpos($url, "://");
128                   $prt = substr($url, 0, $hpos+3);
129                   $url = substr($url, $hpos+3);
132                     $fspos = strpos($url, "/");
133                     if ($fspos) $loc = $prt.substr($url, 0, $fspos).$loc;
134                     else $loc = $prt.$url.$loc;
139                       $xpos = strpos($url, "/");
141                       $apos = strpos($url, "?");
143                       $apos = strpos($url, "&");
145                       $pp .= substr($url, 0, $xpos+1);
146                       $url = substr($url, $xpos+1);
158      * Fetches the specified URL using optional extra headers and
161      * @param string $url The URL to be fetched.
164      * @return mixed $result An array of ($code, $url, $headers,
165      * $body) if the URL could be fetched; null if the URL does not
169     function get($url, $headers = null)  argument