Opal-Estate-Pro/inc/vendors/social-login/Google/external/OAuth.php
2019-09-10 11:27:33 +07:00

483 lines
15 KiB
PHP
Executable File

<?php
/* Generic exception class
*/
class apiClientOAuthException extends Exception {
// pass
}
class apiClientOAuthConsumer {
public $key;
public $secret;
public function __construct($key, $secret, $callback_url=NULL) {
$this->key = $key;
$this->secret = $secret;
$this->callback_url = $callback_url;
}
}
class apiClientOAuthToken {
// access tokens and request tokens
public $key;
public $secret;
/**
* key = the token
* secret = the token secret
*/
function __construct($key, $secret) {
$this->key = $key;
$this->secret = $secret;
}
/**
* generates the basic string serialization of a token that a server
* would respond to request_token and access_token calls with
*/
function to_string() {
return "oauth_token=" . apiClientOAuthUtil::urlencodeRFC3986($this->key) .
"&oauth_token_secret=" . apiClientOAuthUtil::urlencodeRFC3986($this->secret);
}
function __toString() {
return $this->to_string();
}
}
class apiClientOAuthSignatureMethod {
public function check_signature(&$request, $consumer, $token, $signature) {
$built = $this->build_signature($request, $consumer, $token);
return $built == $signature;
}
}
class apiClientOAuthSignatureMethod_HMAC_SHA1 extends apiClientOAuthSignatureMethod {
function get_name() {
return "HMAC-SHA1";
}
public function build_signature($request, $consumer, $token, $privKey=NULL) {
$base_string = $request->get_signature_base_string();
$request->base_string = $base_string;
$key_parts = array(
$consumer->secret,
($token) ? $token->secret : ""
);
$key_parts = array_map(array('apiClientOAuthUtil','urlencodeRFC3986'), $key_parts);
$key = implode('&', $key_parts);
return base64_encode( hash_hmac('sha1', $base_string, $key, true));
}
}
class apiClientOAuthSignatureMethod_RSA_SHA1 extends apiClientOAuthSignatureMethod {
public function get_name() {
return "RSA-SHA1";
}
protected function fetch_public_cert(&$request) {
// not implemented yet, ideas are:
// (1) do a lookup in a table of trusted certs keyed off of consumer
// (2) fetch via http using a url provided by the requester
// (3) some sort of specific discovery code based on request
//
// either way should return a string representation of the certificate
throw Exception("fetch_public_cert not implemented");
}
protected function fetch_private_cert($privKey) {//&$request) {
// not implemented yet, ideas are:
// (1) do a lookup in a table of trusted certs keyed off of consumer
//
// either way should return a string representation of the certificate
throw Exception("fetch_private_cert not implemented");
}
public function build_signature(&$request, $consumer, $token, $privKey) {
$base_string = $request->get_signature_base_string();
// Fetch the private key cert based on the request
//$cert = $this->fetch_private_cert($consumer->privKey);
//Pull the private key ID from the certificate
//$privatekeyid = openssl_get_privatekey($cert);
// hacked in
if ($privKey == '') {
$fp = fopen($GLOBALS['PRIV_KEY_FILE'], "r");
$privKey = fread($fp, 8192);
fclose($fp);
}
$privatekeyid = openssl_get_privatekey($privKey);
//Check the computer signature against the one passed in the query
$ok = openssl_sign($base_string, $signature, $privatekeyid);
//Release the key resource
openssl_free_key($privatekeyid);
return base64_encode($signature);
}
public function check_signature(&$request, $consumer, $token, $signature) {
$decoded_sig = base64_decode($signature);
$base_string = $request->get_signature_base_string();
// Fetch the public key cert based on the request
$cert = $this->fetch_public_cert($request);
//Pull the public key ID from the certificate
$publickeyid = openssl_get_publickey($cert);
//Check the computer signature against the one passed in the query
$ok = openssl_verify($base_string, $decoded_sig, $publickeyid);
//Release the key resource
openssl_free_key($publickeyid);
return $ok == 1;
}
}
class apiClientOAuthRequest {
private $parameters;
private $http_method;
private $http_url;
// for debug purposes
public $base_string;
public static $version = '1.0';
function __construct($http_method, $http_url, $parameters=NULL) {
@$parameters or $parameters = array();
$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 or $http_url = $scheme . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
@$http_method or $http_method = $_SERVER['REQUEST_METHOD'];
$request_headers = apiClientOAuthRequest::get_headers();
// let the library user override things however they'd like, if they know
// which parameters to use then go for it, for example XMLRPC might want to
// do this
if ($parameters) {
$req = new apiClientOAuthRequest($http_method, $http_url, $parameters);
}
// next check for the auth header, we need to do some extra stuff
// if that is the case, namely suck in the parameters from GET or POST
// so that we can include them in the signature
else if (@substr($request_headers['Authorization'], 0, 5) == "OAuth") {
$header_parameters = apiClientOAuthRequest::split_header($request_headers['Authorization']);
if ($http_method == "GET") {
$req_parameters = $_GET;
}
else if ($http_method = "POST") {
$req_parameters = $_POST;
}
$parameters = array_merge($header_parameters, $req_parameters);
$req = new apiClientOAuthRequest($http_method, $http_url, $parameters);
}
else if ($http_method == "GET") {
$req = new apiClientOAuthRequest($http_method, $http_url, $_GET);
}
else if ($http_method == "POST") {
$req = new apiClientOAuthRequest($http_method, $http_url, $_POST);
}
return $req;
}
/**
* pretty much a helper function to set up the request
*/
public static function from_consumer_and_token($consumer, $token, $http_method, $http_url, $parameters=NULL) {
@$parameters or $parameters = array();
$defaults = array("oauth_version" => apiClientOAuthRequest::$version,
"oauth_nonce" => apiClientOAuthRequest::generate_nonce(),
"oauth_timestamp" => apiClientOAuthRequest::generate_timestamp(),
"oauth_consumer_key" => $consumer->key);
$parameters = array_merge($defaults, $parameters);
if ($token) {
$parameters['oauth_token'] = $token->key;
}
// oauth v1.0a
/*if (isset($_REQUEST['oauth_verifier'])) {
$parameters['oauth_verifier'] = $_REQUEST['oauth_verifier'];
}*/
return new apiClientOAuthRequest($http_method, $http_url, $parameters);
}
public function set_parameter($name, $value) {
$this->parameters[$name] = $value;
}
public function get_parameter($name) {
return $this->parameters[$name];
}
public function get_parameters() {
return $this->parameters;
}
/**
* Returns the normalized parameters of the request
* This will be all (except oauth_signature) parameters,
* sorted first by key, and if duplicate keys, then by
* value.
* The returned string will be all the key=value pairs
* concated by &.
* @return string
*/
public function get_signable_parameters() {
// Grab all parameters
$params = $this->parameters;
// Remove oauth_signature if present
if (isset($params['oauth_signature'])) {
unset($params['oauth_signature']);
}
// Urlencode both keys and values
$keys = array_map(array('apiClientOAuthUtil', 'urlencodeRFC3986'), array_keys($params));
$values = array_map(array('apiClientOAuthUtil', 'urlencodeRFC3986'), array_values($params));
$params = array_combine($keys, $values);
// Sort by keys (natsort)
uksort($params, 'strnatcmp');
if(isset($params['title']) && isset($params['title-exact'])) {
$temp = $params['title-exact'];
$title = $params['title'];
unset($params['title']);
unset($params['title-exact']);
$params['title-exact'] = $temp;
$params['title'] = $title;
}
// Generate key=value pairs
$pairs = array();
foreach ($params as $key=>$value ) {
if (is_array($value)) {
// If the value is an array, it's because there are multiple
// with the same key, sort them, then add all the pairs
natsort($value);
foreach ($value as $v2) {
$pairs[] = $key . '=' . $v2;
}
} else {
$pairs[] = $key . '=' . $value;
}
}
// Return the pairs, concated with &
return implode('&', $pairs);
}
/**
* 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 = array_map(array('apiClientOAuthUtil', 'urlencodeRFC3986'), $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);
// FIXME: port should handle according to http://groups.google.com/group/oauth/browse_thread/thread/1b203a51d9590226
$port = (isset($parts['port']) && $parts['port'] != '80') ? ':' . $parts['port'] : '';
$path = (isset($parts['path'])) ? $parts['path'] : '';
return $parts['scheme'] . '://' . $parts['host'] . $port . $path;
}
/**
* builds a url usable for a GET request
*/
public function to_url() {
$out = $this->get_normalized_http_url() . "?";
$out .= $this->to_postdata();
return $out;
}
/**
* builds the data one would send in a POST request
*/
public function to_postdata() {
$total = array();
foreach ($this->parameters as $k => $v) {
$total[] = apiClientOAuthUtil::urlencodeRFC3986($k) . "=" . apiClientOAuthUtil::urlencodeRFC3986($v);
}
$out = implode("&", $total);
return $out;
}
/**
* builds the Authorization: header
*/
public function to_header() {
$out ='Authorization: OAuth ';
$total = array();
foreach ($this->parameters as $k => $v) {
if (substr($k, 0, 5) != "oauth") continue;
$out .= apiClientOAuthUtil::urlencodeRFC3986($k) . '="' . apiClientOAuthUtil::urlencodeRFC3986($v) . '", ';
}
$out = substr_replace($out, '', strlen($out) - 2);
return $out;
}
public function __toString() {
return $this->to_url();
}
public function sign_request($signature_method, $consumer, $token, $privKey=NULL) {
$this->set_parameter("oauth_signature_method", $signature_method->get_name());
$signature = $this->build_signature($signature_method, $consumer, $token, $privKey);
$this->set_parameter("oauth_signature", $signature);
}
public function build_signature($signature_method, $consumer, $token, $privKey=NULL) {
$signature = $signature_method->build_signature($this, $consumer, $token, $privKey);
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 . $rand); // md5s look nicer than numbers
}
/**
* util function for turning the Authorization: header into
* parameters, has to do some unescaping
*/
private static function split_header($header) {
// this should be a regex
// error cases: commas in parameter values
$parts = explode(",", $header);
$out = array();
foreach ($parts as $param) {
$param = ltrim($param);
// skip the "realm" param, nobody ever uses it anyway
if (substr($param, 0, 5) != "oauth") continue;
$param_parts = explode("=", $param);
// rawurldecode() used because urldecode() will turn a "+" in the
// value into a space
$out[$param_parts[0]] = rawurldecode(substr($param_parts[1], 1, -1));
}
return $out;
}
/**
* helper to try to sort out headers for people who aren't running apache
*/
private static function get_headers() {
if (function_exists('apache_request_headers')) {
// we need this to get the actual Authorization: header
// because apache tends to tell us it doesn't exist
return apache_request_headers();
}
// otherwise we don't have apache and are just going to have to hope
// that $_SERVER actually contains what we need
$out = array();
foreach ($_SERVER as $key => $value) {
if (substr($key, 0, 5) == "HTTP_") {
// this is chaos, basically it is just there to capitalize the first
// letter of every word that is not an initial HTTP and strip HTTP
// code from przemek
$key = str_replace(" ", "-", ucwords(strtolower(str_replace("_", " ", substr($key, 5)))));
$out[$key] = $value;
}
}
return $out;
}
}
class apiClientOAuthDataStore {
function lookup_consumer($consumer_key) {
// implement me
}
function lookup_token($consumer, $token_type, $token) {
// implement me
}
function lookup_nonce($consumer, $token, $nonce, $timestamp) {
// implement me
}
function fetch_request_token($consumer) {
// return a new token attached to this consumer
}
function fetch_access_token($token, $consumer) {
// return a new access token attached to this consumer
// for the user associated with this token if the request token
// is authorized
// should also invalidate the request token
}
}
class apiClientOAuthUtil {
public static function urlencodeRFC3986($string) {
return str_replace('%7E', '~', rawurlencode($string));
}
public static function urldecodeRFC3986($string) {
return rawurldecode($string);
}
}