/**
* Makes an authorized remote request using Jetpack_Signature
*
* @return array|WP_Error WP HTTP response on success
*/
public static function remote_request($args, $body = null)
{
$defaults = array('url' => '', 'user_id' => 0, 'blog_id' => 0, 'auth_location' => JETPACK_CLIENT__AUTH_LOCATION, 'method' => 'POST', 'timeout' => 10, 'redirection' => 0);
$args = wp_parse_args($args, $defaults);
$args['blog_id'] = (int) $args['blog_id'];
if ('header' != $args['auth_location']) {
$args['auth_location'] = 'query_string';
}
$token = Jetpack_Data::get_access_token($args['user_id']);
if (!$token) {
return new Jetpack_Error('missing_token');
}
$method = strtoupper($args['method']);
$timeout = intval($args['timeout']);
$redirection = $args['redirection'];
$request = compact('method', 'body', 'timeout', 'redirection');
@(list($token_key, $secret) = explode('.', $token->secret));
if (empty($token) || empty($secret)) {
return new Jetpack_Error('malformed_token');
}
$token_key = sprintf('%s:%d:%d', $token_key, JETPACK__API_VERSION, $token->external_user_id);
require_once dirname(__FILE__) . '/class.jetpack-signature.php';
$time_diff = (int) Jetpack_Options::get_option('time_diff');
$jetpack_signature = new Jetpack_Signature($token->secret, $time_diff);
$timestamp = time() + $time_diff;
$nonce = wp_generate_password(10, false);
// Kind of annoying. Maybe refactor Jetpack_Signature to handle body-hashing
if (is_null($body)) {
$body_hash = '';
} else {
if (!is_string($body)) {
return new Jetpack_Error('invalid_body', 'Body is malformed.');
}
$body_hash = jetpack_sha1_base64($body);
}
$auth = array('token' => $token_key, 'timestamp' => $timestamp, 'nonce' => $nonce, 'body-hash' => $body_hash);
if (false !== strpos($args['url'], 'xmlrpc.php')) {
$url_args = array('for' => 'jetpack', 'wpcom_blog_id' => Jetpack_Options::get_option('id'));
} else {
$url_args = array();
}
if ('header' != $args['auth_location']) {
$url_args += $auth;
}
$url = add_query_arg(urlencode_deep($url_args), $args['url']);
$url = Jetpack::fix_url_for_bad_hosts($url);
$signature = $jetpack_signature->sign_request($token_key, $timestamp, $nonce, $body_hash, $method, $url, $body, false);
if (!$signature || is_wp_error($signature)) {
return $signature;
}
// Send an Authorization header so various caches/proxies do the right thing
$auth['signature'] = $signature;
$auth['version'] = JETPACK__VERSION;
$header_pieces = array();
foreach ($auth as $key => $value) {
$header_pieces[] = sprintf('%s="%s"', $key, $value);
}
$request['headers'] = array('Authorization' => "X_JETPACK " . join(' ', $header_pieces));
if ('header' != $args['auth_location']) {
$url = add_query_arg('signature', urlencode($signature), $url);
}
return Jetpack_Client::_wp_remote_request($url, $request);
}
function verify_json_api_authorization_request()
{
require_once JETPACK__PLUGIN_DIR . 'class.jetpack-signature.php';
$token = Jetpack_Data::get_access_token(JETPACK_MASTER_USER);
if (!$token || empty($token->secret)) {
wp_die(__('You must connect your Jetpack plugin to WordPress.com to use this feature.', 'jetpack'));
}
$die_error = __('Someone may be trying to trick you into giving them access to your site. Or it could be you just encountered a bug :). Either way, please close this window.', 'jetpack');
$jetpack_signature = new Jetpack_Signature($token->secret, (int) Jetpack_Options::get_option('time_diff'));
if (isset($_POST['jetpack_json_api_original_query'])) {
$signature = $jetpack_signature->sign_request($_GET['token'], $_GET['timestamp'], $_GET['nonce'], '', 'GET', $_POST['jetpack_json_api_original_query'], null, true);
} else {
$signature = $jetpack_signature->sign_current_request(array('body' => null, 'method' => 'GET'));
}
if (!$signature) {
wp_die($die_error);
} else {
if (is_wp_error($signature)) {
wp_die($die_error);
} else {
if ($signature !== $_GET['signature']) {
if (is_ssl()) {
// If we signed an HTTP request on the Jetpack Servers, but got redirected to HTTPS by the local blog, check the HTTP signature as well
$signature = $jetpack_signature->sign_current_request(array('scheme' => 'http', 'body' => null, 'method' => 'GET'));
if (!$signature || is_wp_error($signature) || $signature !== $_GET['signature']) {
wp_die($die_error);
}
} else {
wp_die($die_error);
}
}
}
}
$timestamp = (int) $_GET['timestamp'];
$nonce = stripslashes((string) $_GET['nonce']);
if (!$this->add_nonce($timestamp, $nonce)) {
// De-nonce the nonce, at least for 5 minutes.
// We have to reuse this nonce at least once (used the first time when the initial request is made, used a second time when the login form is POSTed)
$old_nonce_time = get_option("jetpack_nonce_{$timestamp}_{$nonce}");
if ($old_nonce_time < time() - 300) {
wp_die(__('The authorization process expired. Please go back and try again.', 'jetpack'));
}
}
$data = json_decode(base64_decode(stripslashes($_GET['data'])));
$data_filters = array('state' => 'opaque', 'client_id' => 'int', 'client_title' => 'string', 'client_image' => 'url');
foreach ($data_filters as $key => $sanitation) {
if (!isset($data->{$key})) {
wp_die($die_error);
}
switch ($sanitation) {
case 'int':
$this->json_api_authorization_request[$key] = (int) $data->{$key};
break;
case 'opaque':
$this->json_api_authorization_request[$key] = (string) $data->{$key};
break;
case 'string':
$this->json_api_authorization_request[$key] = wp_kses((string) $data->{$key}, array());
break;
case 'url':
$this->json_api_authorization_request[$key] = esc_url_raw((string) $data->{$key});
break;
}
}
if (empty($this->json_api_authorization_request['client_id'])) {
wp_die($die_error);
}
}
/**
* Makes an authorized remote request using Jetpack_Signature
*
* @return array|WP_Error WP HTTP response on success
*/
public static function remote_request($args, $body = null)
{
$defaults = array('url' => '', 'user_id' => 0, 'blog_id' => 0, 'auth_location' => JETPACK_CLIENT__AUTH_LOCATION, 'method' => 'POST', 'timeout' => 10, 'redirection' => 0, 'headers' => array(), 'stream' => false, 'filename' => null);
$args = wp_parse_args($args, $defaults);
$args['blog_id'] = (int) $args['blog_id'];
if ('header' != $args['auth_location']) {
$args['auth_location'] = 'query_string';
}
$token = Jetpack_Data::get_access_token($args['user_id']);
if (!$token) {
return new Jetpack_Error('missing_token');
}
$method = strtoupper($args['method']);
$timeout = intval($args['timeout']);
$redirection = $args['redirection'];
$stream = $args['stream'];
$filename = $args['filename'];
$request = compact('method', 'body', 'timeout', 'redirection', 'stream', 'filename');
@(list($token_key, $secret) = explode('.', $token->secret));
if (empty($token) || empty($secret)) {
return new Jetpack_Error('malformed_token');
}
$token_key = sprintf('%s:%d:%d', $token_key, JETPACK__API_VERSION, $token->external_user_id);
require_once JETPACK__PLUGIN_DIR . 'class.jetpack-signature.php';
$time_diff = (int) Jetpack_Options::get_option('time_diff');
$jetpack_signature = new Jetpack_Signature($token->secret, $time_diff);
$timestamp = time() + $time_diff;
if (function_exists('wp_generate_password')) {
$nonce = wp_generate_password(10, false);
} else {
$nonce = substr(sha1(rand(0, 1000000)), 0, 10);
}
// Kind of annoying. Maybe refactor Jetpack_Signature to handle body-hashing
if (is_null($body)) {
$body_hash = '';
} else {
// Allow arrays to be used in passing data.
$body_to_hash = $body;
if (is_array($body)) {
// We cast this to a new variable, because the array form of $body needs to be
// maintained so it can be passed into the request later on in the code.
if (count($body) > 0) {
$body_to_hash = json_encode(self::_stringify_data($body));
} else {
$body_to_hash = '';
}
}
if (!is_string($body_to_hash)) {
return new Jetpack_Error('invalid_body', 'Body is malformed.');
}
$body_hash = jetpack_sha1_base64($body_to_hash);
}
$auth = array('token' => $token_key, 'timestamp' => $timestamp, 'nonce' => $nonce, 'body-hash' => $body_hash);
if (false !== strpos($args['url'], 'xmlrpc.php')) {
$url_args = array('for' => 'jetpack', 'wpcom_blog_id' => Jetpack_Options::get_option('id'));
} else {
$url_args = array();
}
if ('header' != $args['auth_location']) {
$url_args += $auth;
}
$url = add_query_arg(urlencode_deep($url_args), $args['url']);
$url = Jetpack::fix_url_for_bad_hosts($url);
$signature = $jetpack_signature->sign_request($token_key, $timestamp, $nonce, $body_hash, $method, $url, $body, false);
if (!$signature || is_wp_error($signature)) {
return $signature;
}
// Send an Authorization header so various caches/proxies do the right thing
$auth['signature'] = $signature;
$auth['version'] = JETPACK__VERSION;
$header_pieces = array();
foreach ($auth as $key => $value) {
$header_pieces[] = sprintf('%s="%s"', $key, $value);
}
$request['headers'] = array_merge($args['headers'], array('Authorization' => "X_JETPACK " . join(' ', $header_pieces)));
// Make sure we keep the host when we do JETPACK__WPCOM_JSON_API_HOST requests.
$host = parse_url($url, PHP_URL_HOST);
if ($host === JETPACK__WPCOM_JSON_API_HOST) {
$request['headers']['Host'] = 'public-api.wordpress.com';
}
if ('header' != $args['auth_location']) {
$url = add_query_arg('signature', urlencode($signature), $url);
}
return Jetpack_Client::_wp_remote_request($url, $request);
}
