function detect_xml($r, &$out)
{
global $__Auth_Yadis_xml_extensions;
$out .= $r->h2('XML Support');
// Try to get an XML extension.
$ext = Auth_Yadis_getXMLParser();
if ($ext !== null) {
$out .= $r->p('XML parsing support is present using the ' . $r->b(get_class($ext)) . ' interface.');
return true;
} else {
$out .= $r->p('XML parsing support is absent; please install one ' . 'of the following PHP extensions:');
foreach ($__Auth_Yadis_xml_extensions as $name => $cls) {
$out .= "<li>" . $r->b($name) . "</li>";
}
return false;
}
}
function _checkForm($html, $message_, $action_url, $form_tag_attrs, $submit_text)
{
$parser =& Auth_Yadis_getXMLParser();
// Parse HTML source
$this->assertTrue($parser->init($html, array()));
// Get root element
$form = $parser->evalXPath('/form[1]');
$this->assertTrue(count($form) == 1);
$form = $form[0];
// Check required form attributes
$form_attrs = $parser->attributes($form);
foreach ($this->required_form_attrs as $k => $v) {
$this->assertTrue($form_attrs[$k] == $v);
}
// Check extra form attributes
foreach ($form_tag_attrs as $k => $v) {
// Skip attributes that already passed the required
// attribute check, since they should be ignored by the
// form generation code.
if (in_array($k, array_keys($this->required_form_attrs))) {
continue;
}
$this->assertTrue($form_attrs[$k] == $v, "Form attr {$k} is " . $form_attrs[$k] . " (expected {$v})");
}
// Check hidden fields against post args
$hiddens = array();
$input_elements = $parser->evalXPath('input', $form);
foreach ($input_elements as $e) {
$attrs = $parser->attributes($e);
if (strtoupper($attrs['type']) == 'HIDDEN') {
$hiddens[] = $e;
}
}
// For each post arg, make sure there is a hidden with that
// value. Make sure there are no other hiddens.
$postargs = $message_->toPostArgs();
foreach ($postargs as $name => $value) {
$found = false;
foreach ($hiddens as $e) {
$attrs = $parser->attributes($e);
if ($attrs['name'] == $name) {
$this->assertTrue($attrs['value'] == $value);
$found = true;
break;
}
}
if (!$found) {
$this->fail("Post arg {$name} not found in form");
}
}
$keys = array_keys($postargs);
foreach ($hiddens as $e) {
$attrs = $parser->attributes($e);
$this->assertTrue(in_array($attrs['name'], $keys));
}
// Check action URL
$this->assertTrue($form_attrs['action'] == $action_url);
// Check submit text
$submits = array();
foreach ($input_elements as $e) {
$attrs = $parser->attributes($e);
if (strtoupper($attrs['type']) == 'SUBMIT') {
$submits[] = $e;
}
}
$this->assertTrue(count($submits) == 1);
$attrs = $parser->attributes($submits[0]);
$this->assertTrue($attrs['value'] == $submit_text);
}
/**
* Parse an XML string (XRDS document) and return either a
* Auth_Yadis_XRDS object or null, depending on whether the
* XRDS XML is valid.
*
* @param string $xml_string An XRDS XML string.
* @return mixed $xrds An instance of Auth_Yadis_XRDS or null,
* depending on the validity of $xml_string
*/
function &parseXRDS($xml_string, $extra_ns_map = null)
{
$_null = null;
if (!$xml_string) {
return $_null;
}
$parser = Auth_Yadis_getXMLParser();
$ns_map = Auth_Yadis_getNSMap();
if ($extra_ns_map && is_array($extra_ns_map)) {
$ns_map = array_merge($ns_map, $extra_ns_map);
}
if (!($parser && $parser->init($xml_string, $ns_map))) {
return $_null;
}
// Try to get root element.
$root = $parser->evalXPath('/xrds:XRDS[1]');
if (!$root) {
return $_null;
}
if (is_array($root)) {
$root = $root[0];
}
$attrs = $parser->attributes($root);
if (array_key_exists('xmlns:xrd', $attrs) && $attrs['xmlns:xrd'] != Auth_Yadis_XMLNS_XRDS) {
return $_null;
} else {
if (array_key_exists('xmlns', $attrs) && preg_match('/xri/', $attrs['xmlns']) && $attrs['xmlns'] != Auth_Yadis_XMLNS_XRD_2_0) {
return $_null;
}
}
// Get the last XRD node.
$xrd_nodes = $parser->evalXPath('/xrds:XRDS[1]/xrd:XRD');
if (!$xrd_nodes) {
return $_null;
}
$xrds = new Auth_Yadis_XRDS($parser, $xrd_nodes);
return $xrds;
}
