if ($result instanceof Exception) {
$name = 'error_response';
} else {
$name = $method_underscore . '_response';
}
$attrs = array();
$attrs['xmlns'] = 'http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . $version . '/';
$attrs['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance';
if ($method_underscore != 'fql_query') {
$attrs['xsi:schemaLocation'] = 'http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . $version . '/ http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . $version . '/facebook.xsd';
}
if (is_array($result) && isset($result[0]) && $result[0] instanceof xml_element) {
$attrs['list'] = 'true';
api_xml3_render_object($xml_memory, new xml_element($name, $result, $attrs));
} else {
api_xml2_render_object($xml_memory, $name, $result, $attrs);
}
break;
}
xmlwriter_end_document($xml_memory);
// Write XML response
$xml = xmlwriter_output_memory($xml_memory, true);
if ($req_callback) {
$xml = addslashes($xml);
$xml = str_replace("\n", '\\n', $xml);
echo $req_callback . '(\'' . $xml . '\');';
} else {
echo $xml;
}
break;
case 'json':
private function process_request($request)
{
global $API_DOMAIN, $API_DOMAIN_DOT_SUFFIX;
$app_id = $this->app_id;
$method = $request['method'];
$callback = false;
$serialized_result = '';
// Initialize result
$result = array();
// Fix method name
if (starts_with($method, $API_DOMAIN . '.')) {
$method = substr($method, 9);
}
// Replace periods with underscores in method name
$method_underscore = str_replace('.', '_', $method);
$ec = $this->check_throttle($method_underscore, $request);
if ($ec !== API_EC_SUCCESS) {
$msg = $api_error_descriptions[$ec];
if ($ec === API_EC_BAD_IP) {
$msg .= ' (ip was: ' . $_SERVER['REMOTE_ADDR'] . ')';
}
throw new api10_FacebookApiException(array('error_code' => $ec, 'error_msg' => $msg));
}
$impl = new FacebookApi10Implementation($app_id, $this->user_id, $this->session_key, $this->format);
$api = new FacebookApi10Rest($impl);
// Check that the method is valid
if (!method_exists($api, $method_underscore) || !method_exists($impl, $method_underscore) || !api_can_call_method($app_id, $method_underscore)) {
$ec = api10_FacebookApiErrorCode::API_EC_METHOD;
throw new api10_FacebookApiException(array('error_code' => $ec, 'error_msg' => $GLOBALS['api_error_descriptions'][$ec]));
} else {
// Call the method and catch any exceptions
$result = $api->{$method_underscore}($request);
}
switch ($this->format) {
case 'manual':
print api_xml_render_manual_error($ec, $msg, $request);
break;
case 'xml':
// Prepare the XML response
$xml_memory = xmlwriter_open_memory();
xmlwriter_set_indent($xml_memory, true);
xmlwriter_set_indent_string($xml_memory, ' ');
xmlwriter_start_document($xml_memory, API_VERSION_10, 'UTF-8');
if ($result instanceof Exception) {
$name = 'error_response';
} else {
$name = $method_underscore . '_response';
}
$attrs = array();
// FBOPEN:NOTE here, if you are not publishing your own .xsd, to use 'facebook.com' instead
// of $API_DOMAIN_DOT_SUFFIX
$attrs['xmlns'] = 'http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . API_VERSION_10 . '/';
$attrs['xmlns:xsi'] = 'http://www.w3.org/2001/XMLSchema-instance';
if ($method_underscore != 'fql_query') {
$attrs['xsi:schemaLocation'] = 'http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . API_VERSION_10 . '/ http://api.' . $API_DOMAIN_DOT_SUFFIX . '/' . API_VERSION_10 . '/facebook.xsd';
}
if (is_array($result) && isset($result[0]) && $result[0] instanceof xml_element) {
$attrs['list'] = 'true';
api_xml3_render_object($xml_memory, new xml_element($name, $result, $attrs));
} else {
api_xml2_render_object($xml_memory, $name, $result, $attrs);
}
xmlwriter_end_document($xml_memory);
// Write XML response
$xml = xmlwriter_output_memory($xml_memory, true);
if ($callback) {
$xml = addslashes($xml);
$xml = str_replace("\n", '\\n', $xml);
$serialized_result = $callback . '(\'' . $xml . '\');';
} else {
$serialized_result = $xml;
}
break;
case 'json':
$json = api_json2_render_object($result);
if ($callback) {
$serialized_result = $callback . '(' . $json . ');';
} else {
$serialized_result = $json;
}
break;
}
return $serialized_result;
}
/**
* Renders an xml_element structure to XMLWriter memory. This
* basically acts as a wrapper for api_xml2_render_object, first
* parsing through xml_element layers and then calling api_xml2_render_object
* to actually render the objects and arrays found.
*
* @param $xml_memory the xmlwriter memory to use (created with xmlwriter_open_memory())
* @param $object the xml_element to be rendered
*/
function api_xml3_render_object($xml_memory, $object)
{
if (is_array($object->value) && isset($object->value[0]) && $object->value[0] instanceof xml_element) {
xmlwriter_start_element($xml_memory, $object->name);
if (isset($object->attrs)) {
foreach ($object->attrs as $k => $v) {
xmlwriter_write_attribute($xml_memory, $k, $v);
}
}
foreach ($object->value as $elem) {
api_xml3_render_object($xml_memory, $elem);
}
xmlwriter_end_element($xml_memory);
} else {
api_xml2_render_object($xml_memory, $object->name, $object->value, $object->attrs);
}
}