function sign_request($token = '', $timestamp = 0, $nonce = '', $body_hash = '', $method = '', $url = '', $body = null, $verify_body_hash = true)
{
if (!$this->secret) {
return new Jetpack_Error('invalid_secret', 'Invalid secret');
}
if (!$this->token) {
return new Jetpack_Error('invalid_token', 'Invalid token');
}
list($token) = explode('.', $token);
if (0 !== strpos($token, "{$this->token}:")) {
return new Jetpack_Error('token_mismatch', 'Incorrect token');
}
$required_parameters = array('token', 'timestamp', 'nonce', 'method', 'url');
if (!is_null($body)) {
$required_parameters[] = 'body_hash';
if (!is_string($body)) {
return new Jetpack_Error('invalid_body', 'Body is malformed.');
}
}
foreach ($required_parameters as $required) {
if (!is_scalar(${$required})) {
return new Jetpack_Error('invalid_signature', sprintf('The required "%s" parameter is malformed.', str_replace('_', '-', $required)));
}
if (!strlen(${$required})) {
return new Jetpack_Error('invalid_signature', sprintf('The required "%s" parameter is missing.', str_replace('_', '-', $required)));
}
}
if (is_null($body)) {
if ($body_hash) {
return new Jetpack_Error('invalid_body_hash', 'The body hash does not match.');
}
} else {
if ($verify_body_hash && jetpack_sha1_base64($body) !== $body_hash) {
return new Jetpack_Error('invalid_body_hash', 'The body hash does not match.');
}
}
$parsed = parse_url($url);
if (!isset($parsed['host'])) {
return new Jetpack_Error('invalid_signature', sprintf('The required "%s" parameter is malformed.', 'url'));
}
if (!empty($parsed['port'])) {
$port = $parsed['port'];
} else {
if ('http' == $parsed['scheme']) {
$port = 80;
} else {
if ('https' == $parsed['scheme']) {
$port = 443;
} else {
return new Jetpack_Error('unknown_scheme_port', "The scheme's port is unknown");
}
}
}
if (!ctype_digit("{$timestamp}") || 10 < strlen($timestamp)) {
// If Jetpack is around in 275 years, you can blame mdawaffe for the bug.
return new Jetpack_Error('invalid_signature', sprintf('The required "%s" parameter is malformed.', 'timestamp'));
}
$local_time = $timestamp - $this->time_diff;
if ($local_time < time() - 600 || $local_time > time() + 300) {
return new Jetpack_Error('invalid_signature', 'The timestamp is too old.');
}
if (12 < strlen($nonce) || preg_match('/[^a-zA-Z0-9]/', $nonce)) {
return new Jetpack_Error('invalid_signature', sprintf('The required "%s" parameter is malformed.', 'nonce'));
}
$normalized_request_pieces = array($token, $timestamp, $nonce, $body_hash, strtoupper($method), strtolower($parsed['host']), $port, $parsed['path']);
$normalized_request_pieces = array_merge($normalized_request_pieces, $this->normalized_query_parameters(isset($parsed['query']) ? $parsed['query'] : ''));
$normalized_request_string = join("\n", $normalized_request_pieces) . "\n";
return base64_encode(hash_hmac('sha1', $normalized_request_string, $this->secret, true));
}
/**
* Makes an authorized remote request using Jetpack_Signature
*
* @static
* @return array|WP_Error WP HTTP response on success
*/
function remote_request($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['user_id'] = (int) $args['user_id'];
$args['blog_id'] = (int) $args['blog_id'];
if ('header' != $args['auth_location']) {
$args['auth_location'] = 'query_string';
}
$token = Jetpack_Data::get_access_token($args);
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::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');
} 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, $request);
$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, $request);
}
/**
* Makes an authorized remote request using Jetpack_Signature
*
* @return array|WP_Error WP HTTP response on success
*/
public static function remote_request($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);
}
