function test_oembed_create_xml()
{
$actual = _oembed_create_xml(array('foo' => 'bar', 'bar' => 'baz', 'ping' => 'pong'));
$expected = '<oembed><foo>bar</foo><bar>baz</bar><ping>pong</ping></oembed>';
$this->assertStringEndsWith($expected, trim($actual));
$actual = _oembed_create_xml(array('foo' => array('bar' => 'baz'), 'ping' => 'pong'));
$expected = '<oembed><foo><bar>baz</bar></foo><ping>pong</ping></oembed>';
$this->assertStringEndsWith($expected, trim($actual));
$actual = _oembed_create_xml(array('foo' => array('bar' => array('ping' => 'pong')), 'hello' => 'world'));
$expected = '<oembed><foo><bar><ping>pong</ping></bar></foo><hello>world</hello></oembed>';
$this->assertStringEndsWith($expected, trim($actual));
$actual = _oembed_create_xml(array(array('foo' => array('bar')), 'helloworld'));
$expected = '<oembed><oembed><foo><oembed>bar</oembed></foo></oembed><oembed>helloworld</oembed></oembed>';
$this->assertStringEndsWith($expected, trim($actual));
}
/**
* Creates an XML string from a given array.
*
* @since 4.4.0
* @access private
*
* @param array $data The original oEmbed response data.
* @param SimpleXMLElement $node Optional. XML node to append the result to recursively.
* @return string|false XML string on success, false on error.
*/
function _oembed_create_xml($data, $node = null)
{
if (!is_array($data) || empty($data)) {
return false;
}
if (null === $node) {
$node = new SimpleXMLElement('<oembed></oembed>');
}
foreach ($data as $key => $value) {
if (is_numeric($key)) {
$key = 'oembed';
}
if (is_array($value)) {
$item = $node->addChild($key);
_oembed_create_xml($value, $item);
} else {
$node->addChild($key, esc_html($value));
}
}
return $node->asXML();
}
/**
* Print the oEmbed XML response.
*
* @since 4.4.0
*
* @param array $data The oEmbed response data.
* @return string The XML response data.
*/
public function xml_response($data)
{
if (!class_exists('SimpleXMLElement')) {
status_header(501);
return get_status_header_desc(501);
}
$result = _oembed_create_xml($data);
// Bail if there's no XML.
if (!$result) {
status_header(501);
return get_status_header_desc(501);
}
if (!headers_sent()) {
header('Content-Type: text/xml; charset=' . get_option('blog_charset'));
}
return $result;
}
/**
* If oEmbed request wants XML, return XML instead of JSON.
*
* Basically a copy of {@link _oembed_rest_pre_serve_request()}. Unfortunate
* that we have to duplicate this just for a URL check.
*
* @since 2.6.0
*
* @param bool $served Whether the request has already been served.
* @param WP_HTTP_ResponseInterface $result Result to send to the client. Usually a WP_REST_Response.
* @param WP_REST_Request $request Request used to generate the response.
* @param WP_REST_Server $server Server instance.
* @return bool
*/
public function oembed_xml_request($served, $result, $request, $server)
{
$params = $request->get_params();
if (!isset($params['format']) || 'xml' !== $params['format']) {
return $served;
}
// Validate URL against our oEmbed endpoint. If not valid, bail.
// This is our mod to _oembed_rest_pre_serve_request().
$query_params = $request->get_query_params();
if (false === $this->validate_url_to_item_id($query_params['url'])) {
return $served;
}
// Embed links inside the request.
$data = $server->response_to_data($result, false);
if (!class_exists('SimpleXMLElement')) {
status_header(501);
die(get_status_header_desc(501));
}
$result = _oembed_create_xml($data);
// Bail if there's no XML.
if (!$result) {
status_header(501);
return get_status_header_desc(501);
}
if (!headers_sent()) {
$server->send_header('Content-Type', 'text/xml; charset=' . get_option('blog_charset'));
}
echo $result;
return true;
}
/**
* Print the oEmbed XML response.
*
* @since 4.4.0
*
* @param array $data The oEmbed response data.
* @return string The XML response data.
*/
public function xml_response($data)
{
$result = _oembed_create_xml($data);
// Bail if there's no XML.
if (!$result) {
status_header(501);
return 'Not implemented';
}
if (!headers_sent()) {
header('Content-Type: text/xml; charset=' . get_option('blog_charset'));
}
return $result;
}
