| public parseLinkAttrs ( string $html ) : array | ||
| $html | string | The text to parse |
| return | array | $list An array of arrays of attributes, one for each link tag |
function parseLinkAttrs($html)
{
$stripped = preg_replace($this->_removed_re, "", $html);
$html_begin = $this->htmlBegin($stripped);
$html_end = $this->htmlEnd($stripped);
if ($html_begin === false) {
return array();
}
if ($html_end === false) {
$html_end = strlen($stripped);
}
$stripped = substr($stripped, $html_begin, $html_end - $html_begin);
// Workaround to prevent PREG_BACKTRACK_LIMIT_ERROR:
$old_btlimit = ini_set('pcre.backtrack_limit', -1);
// Try to find the <HEAD> tag.
$head_re = $this->headFind();
$head_match = array();
if (!$this->match($head_re, $stripped, $head_match)) {
ini_set('pcre.backtrack_limit', $old_btlimit);
return array();
}
$link_data = array();
$link_matches = array();
if (!preg_match_all($this->_link_find, $head_match[0], $link_matches)) {
ini_set('pcre.backtrack_limit', $old_btlimit);
return array();
}
foreach ($link_matches[0] as $link) {
$attr_matches = array();
preg_match_all($this->_attr_find, $link, $attr_matches);
$link_attrs = array();
foreach ($attr_matches[0] as $index => $full_match) {
$name = $attr_matches[1][$index];
$value = $this->replaceEntities($this->removeQuotes($attr_matches[2][$index]));
$link_attrs[strtolower($name)] = $value;
}
$link_data[] = $link_attrs;
}
ini_set('pcre.backtrack_limit', $old_btlimit);
return $link_data;
}/**
* Discover and cache OpenID services for a user's delegate OpenID.
*
* @param int $userid user ID
* @url string URL to discover. If not provided, user's current delegate will be used
* @return bool true if successful
*/
function openid_server_update_delegation_info($userid, $url = null)
{
if (empty($url)) {
$url = get_usermeta($userid, 'openid_delegate');
}
if (empty($url)) {
return false;
}
$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$discoveryResult = Auth_Yadis_Yadis::discover($url, $fetcher);
$endpoints = Auth_OpenID_ServiceEndpoint::fromDiscoveryResult($discoveryResult);
$services = array();
if (!empty($endpoints)) {
foreach ($endpoints as $endpoint) {
$service = array('Type' => array(), 'URI' => $endpoint->server_url);
foreach ($endpoint->type_uris as $type) {
$service['Type'][] = array('content' => $type);
if ($type == Auth_OpenID_TYPE_2_0_IDP) {
$service['LocalID'] = Auth_OpenID_IDENTIFIER_SELECT;
} else {
if ($type == Auth_OpenID_TYPE_2_0) {
$service['LocalID'] = $endpoint->local_id;
} else {
if (in_array($type, array(Auth_OpenID_TYPE_1_0, Auth_OpenID_TYPE_1_1, Auth_OpenID_TYPE_1_2))) {
$service['openid:Delegate'] = $endpoint->local_id;
}
}
}
}
$services[] = $service;
}
}
if (empty($services)) {
// resort to checking for HTML links
$response = $fetcher->get($url);
$html_content = $response->body;
$p = new Auth_OpenID_Parse();
$link_attrs = $p->parseLinkAttrs($html_content);
// check HTML for OpenID2
$server_url = $p->findFirstHref($link_attrs, 'openid2.provider');
if ($server_url !== null) {
$openid_url = $p->findFirstHref($link_attrs, 'openid2.local_id');
if ($openid_url == null) {
$openid_url = $url;
}
$services[] = array('Type' => array(array('content' => Auth_OpenID_Type_1_1)), 'URI' => $server_url, 'LocalID' => $openid_url);
}
// check HTML for OpenID1
$server_url = $p->findFirstHref($link_attrs, 'openid.server');
if ($server_url !== null) {
$openid_url = $p->findFirstHref($link_attrs, 'openid.delegate');
if ($openid_url == null) {
$openid_url = $url;
}
$services[] = array('Type' => array(array('content' => Auth_OpenID_Type_2_0)), 'URI' => $server_url, 'openid:Delegate' => $openid_url);
}
}
if (empty($services)) {
return false;
}
update_usermeta($userid, 'openid_delegate', $url);
update_usermeta($userid, 'openid_delegate_services', $services);
return true;
}
