/lib/PayPal/Auth/Oauth/OAuthRequest.php
PHP | 323 lines | 223 code | 42 blank | 58 comment | 44 complexity | d80570f5bc826a50d44b7bf8fa3537a7 MD5 | raw file
- <?php
- namespace PayPal\Auth\Oauth;
- use PayPal\Exception\OAuthException;
- class OAuthRequest
- {
- public $parameters;
- protected $http_method;
- protected $http_url;
- // for debug purposes
- public $base_string;
- public static $version = '1.0';
- public static $POST_INPUT = 'php://input';
- function __construct($http_method, $http_url, $parameters = null)
- {
- $parameters = ($parameters) ? $parameters : array();
- $parameters = array_merge(OAuthUtil::parse_parameters(parse_url($http_url, PHP_URL_QUERY)), $parameters);
- $this->parameters = $parameters;
- $this->http_method = $http_method;
- $this->http_url = $http_url;
- }
- /**
- * attempt to build up a request from what was passed to the server
- */
- public static function from_request($http_method = null, $http_url = null, $parameters = null)
- {
- $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != "on")
- ? 'http'
- : 'https';
- $http_url = ($http_url) ? $http_url : $scheme .
- '://' . $_SERVER['HTTP_HOST'] .
- ':' .
- $_SERVER['SERVER_PORT'] .
- $_SERVER['REQUEST_URI'];
- $http_method = ($http_method) ? $http_method : $_SERVER['REQUEST_METHOD'];
- // We weren't handed any parameters, so let's find the ones relevant to
- // this request.
- // If you run XML-RPC or similar you should use this to provide your own
- // parsed parameter-list
- if (!$parameters) {
- // Find request headers
- $request_headers = OAuthUtil::get_headers();
- // Parse the query-string to find GET parameters
- $parameters = OAuthUtil::parse_parameters($_SERVER['QUERY_STRING']);
- // It's a POST request of the proper content-type, so parse POST
- // parameters and add those overriding any duplicates from GET
- if ($http_method == "POST"
- && isset($request_headers['Content-Type'])
- && strstr($request_headers['Content-Type'],
- 'application/x-www-form-urlencoded')
- ) {
- $post_data = OAuthUtil::parse_parameters(
- file_get_contents(self::$POST_INPUT)
- );
- $parameters = array_merge($parameters, $post_data);
- }
- // We have a Authorization-header with OAuth data. Parse the header
- // and add those overriding any duplicates from GET or POST
- if (isset($request_headers['Authorization']) && substr($request_headers['Authorization'], 0,
- 6) == 'OAuth '
- ) {
- $header_parameters = OAuthUtil::split_header(
- $request_headers['Authorization']
- );
- $parameters = array_merge($parameters, $header_parameters);
- }
- }
- return new OAuthRequest($http_method, $http_url, $parameters);
- }
- /**
- * pretty much a helper function to set up the request
- */
- public static function from_consumer_and_token($consumer, $token, $http_method, $http_url, $parameters = null)
- {
- $parameters = ($parameters) ? $parameters : array();
- $defaults = array(
- "oauth_version" => OAuthRequest::$version,
- // "oauth_nonce" => OAuthRequest::generate_nonce(),
- "oauth_timestamp" => OAuthRequest::generate_timestamp(),
- "oauth_consumer_key" => $consumer->key
- );
- if ($token) {
- $defaults['oauth_token'] = $token->key;
- }
- $parameters = array_merge($defaults, $parameters);
- ksort($parameters);
- return new OAuthRequest($http_method, $http_url, $parameters);
- }
- public function set_parameter($name, $value, $allow_duplicates = true)
- {
- if ($allow_duplicates && isset($this->parameters[$name])) {
- // We have already added parameter(s) with this name, so add to the list
- if (is_scalar($this->parameters[$name])) {
- // This is the first duplicate, so transform scalar (string)
- // into an array so we can add the duplicates
- $this->parameters[$name] = array($this->parameters[$name]);
- }
- $this->parameters[$name][] = $value;
- } else {
- $this->parameters[$name] = $value;
- }
- }
- public function get_parameter($name)
- {
- return isset($this->parameters[$name]) ? $this->parameters[$name] : null;
- }
- public function get_parameters()
- {
- return $this->parameters;
- }
- public function unset_parameter($name)
- {
- unset($this->parameters[$name]);
- }
- /**
- * The request parameters, sorted and concatenated into a normalized string.
- * @return string
- */
- public function get_signable_parameters()
- {
- // Grab all parameters
- $params = $this->parameters;
- ksort($params);
- // Remove oauth_signature if present
- // Ref: Spec: 9.1.1 ("The oauth_signature parameter MUST be excluded.")
- if (isset($params['oauth_signature'])) {
- unset($params['oauth_signature']);
- }
- foreach ($params as $key => $value) {
- $res[] = $key . "=" . $value;
- }
- return implode('&', $res);
- //return OAuthUtil::build_http_query($params);
- }
- /**
- * Returns the base string of this request
- *
- * The base string defined as the method, the url
- * and the parameters (normalized), each urlencoded
- * and the concated with &.
- */
- public function get_signature_base_string()
- {
- $parts = array(
- $this->get_normalized_http_method(),
- $this->get_normalized_http_url(),
- $this->get_signable_parameters()
- );
- $parts = OAuthUtil::urlencode_rfc3986($parts);
- return implode('&', $parts);
- }
- /**
- * just uppercases the http method
- */
- public function get_normalized_http_method()
- {
- return strtoupper($this->http_method);
- }
- /**
- * parses the url and rebuilds it to be
- * scheme://host/path
- */
- public function get_normalized_http_url()
- {
- $parts = parse_url($this->http_url);
- $scheme = (isset($parts['scheme'])) ? $parts['scheme'] : 'http';
- $port = (isset($parts['port'])) ? $parts['port'] : (($scheme == 'https') ? '443' : '80');
- $host = (isset($parts['host'])) ? $parts['host'] : '';
- $path = (isset($parts['path'])) ? $parts['path'] : '';
- if (($scheme == 'https' && $port != '443')
- || ($scheme == 'http' && $port != '80')
- ) {
- $host = "$host:$port";
- }
- return "$scheme://$host$path";
- }
- /**
- * builds a url usable for a GET request
- */
- public function to_url()
- {
- $post_data = $this->to_postdata();
- $out = $this->get_normalized_http_url();
- if ($post_data) {
- $out .= '?' . $post_data;
- }
- return $out;
- }
- /**
- * builds the data one would send in a POST request
- */
- public function to_postdata()
- {
- return OAuthUtil::build_http_query($this->parameters);
- }
- /**
- * builds the Authorization: header
- */
- public function to_header($realm = null)
- {
- $first = true;
- if ($realm) {
- $out = 'Authorization: OAuth realm="' . OAuthUtil::urlencode_rfc3986($realm) . '"';
- $first = false;
- } else {
- $out = 'Authorization: OAuth';
- }
- $total = array();
- foreach ($this->parameters as $k => $v) {
- if (substr($k, 0, 5) != "oauth") {
- continue;
- }
- if (is_array($v)) {
- throw new OAuthException('Arrays not supported in headers');
- }
- $out .= ($first) ? ' ' : ',';
- $out .= OAuthUtil::urlencode_rfc3986($k) .
- '="' .
- OAuthUtil::urlencode_rfc3986($v) .
- '"';
- $first = false;
- }
- return $out;
- }
- public function __toString()
- {
- return $this->to_url();
- }
- public function sign_request($signature_method, $consumer, $token)
- {
- $empty = false;
- $msg = array();
- if ($token->key == null) {
- $msg[] = 'Token key';
- }
- if ($token->secret == null) {
- $msg[] = 'Token secret';
- }
- if ($consumer->key == null) {
- $msg[] = 'Consumer key';
- }
- if ($consumer->secret == null) {
- $msg[] = 'Consumer secret';
- }
- if ($this->http_url == null) {
- $msg[] = 'Endpoint';
- }
- if ($this->http_method == null) {
- $msg[] = 'HTTP method';
- }
- if (count($msg)) {
- throw new OAuthException('Enter valid ' . implode(',', $msg));
- }
- $this->set_parameter(
- "oauth_signature_method",
- $signature_method->get_name(),
- false);
- $signature = $this->build_signature($signature_method, $consumer, $token);
- $this->set_parameter("oauth_signature", $signature, false);
- }
- public function build_signature($signature_method, $consumer, $token)
- {
- $signature = $signature_method->build_signature($this, $consumer, $token);
- return $signature;
- }
- /**
- * util function: current timestamp
- */
- private static function generate_timestamp()
- {
- return time();
- }
- /**
- * util function: current nonce
- */
- private static function generate_nonce()
- {
- $mt = microtime();
- $rand = mt_rand();
- return md5($mt . $rand); // md5s look nicer than numbers
- }
- }