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

236 lines
12 KiB
PHP
Executable File

<?php
/*
* Copyright 2008 Google Inc.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
require_once "external/OAuth.php";
/**
* Authentication class that deals with 3-Legged OAuth 1.0a authentication
* This class uses the OAuth 1.0a spec which has a slightly different work flow in
* how callback urls, request & access tokens are dealt with to prevent a possible
* man in the middle attack.
* @author Chris Chabot <chabotc@google.com>
*/
class apiOAuth extends apiAuth {
public $cacheKey;
protected $consumerToken;
protected $accessToken;
protected $privateKeyFile;
protected $developerKey;
public $service;
/**
* Instantiates the class, but does not initiate the login flow, leaving it
* to the discretion of the caller.
*/
public function __construct() {
global $apiConfig;
if (!empty($apiConfig['developer_key'])) {
$this->setDeveloperKey($apiConfig['developer_key']);
}
$this->consumerToken = new apiClientOAuthConsumer($apiConfig['oauth_consumer_key'], $apiConfig['oauth_consumer_secret'], NULL);
$this->signatureMethod = new apiClientOAuthSignatureMethod_HMAC_SHA1();
$this->cacheKey = 'OAuth:' . $apiConfig['oauth_consumer_key']; // Scope data to the local user as well, or else multiple local users will share the same OAuth credentials.
}
/**
* The 3 legged oauth class needs a way to store the access key and token
* it uses the apiCache class to do so.
* Constructing this class will initiate the 3 legged oauth work flow, including redirecting
* to the OAuth provider's site if required(!)
* @param string $consumerKey
* @param string $consumerSecret
* @return apiOAuth3Legged the logged-in provider instance
*/
public function authenticate($service) {
global $apiConfig;
$this->service = $service;
$this->service['authorization_token_url'] .= '?scope=' . apiClientOAuthUtil::urlencodeRFC3986($service['scope']) . '&domain=' . apiClientOAuthUtil::urlencodeRFC3986($apiConfig['site_name']) . '&oauth_token=';
if (isset($_GET['oauth_verifier']) && isset($_GET['oauth_token']) && isset($_GET['uid'])) {
$uid = $_GET['uid'];
$secret = apiClient::$cache->get($this->cacheKey.":nonce:" . $uid);
apiClient::$cache->delete($this->cacheKey.":nonce:" . $uid);
$token = $this->upgradeRequestToken($_GET['oauth_token'], $secret, $_GET['oauth_verifier']);
return json_encode($token);
} else {
// Initialize the OAuth dance, first request a request token, then kick the client to the authorize URL
// First we store the current URL in our cache, so that when the oauth dance is completed we can return there
$callbackUrl = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$uid = uniqid();
$token = $this->obtainRequestToken($callbackUrl, $uid);
apiClient::$cache->set($this->cacheKey.":nonce:" . $uid, $token->secret);
$this->redirectToAuthorization($token);
}
}
/**
* Sets the internal oauth access token (which is returned by the authenticate function), a user should only
* go through the authenticate() flow once (which involces a bunch of browser redirections and authentication screens, not fun)
* and every time the user comes back the access token from the authentication() flow should be re-used (it essentially never expires)
* @param object $accessToken
*/
public function setAccessToken($accessToken) {
$accessToken = json_decode($accessToken, true);
if ($accessToken == null) {
throw new apiAuthException("Could not json decode the access token");
}
if (! isset($accessToken['key']) || ! isset($accessToken['secret'])) {
throw new apiAuthException("Invalid OAuth token, missing key and/or secret");
}
$this->accessToken = new apiClientOAuthConsumer($accessToken['key'], $accessToken['secret']);
}
/**
* Returns the current access token
*/
public function getAccessToken() {
return $this->accessToken;
}
/**
* Set the developer key to use, these are obtained through the API Console
*/
public function setDeveloperKey($developerKey) {
$this->developerKey = $developerKey;
}
/**
* Upgrades an existing request token to an access token.
* @param apiCache $cache cache class to use (file,apc,memcache,mysql)
* @param oauthVerifier
*/
public function upgradeRequestToken($requestToken, $requestTokenSecret, $oauthVerifier) {
$ret = $this->requestAccessToken($requestToken, $requestTokenSecret, $oauthVerifier);
$matches = array();
@parse_str($ret, $matches);
if (!isset($matches['oauth_token']) || !isset($matches['oauth_token_secret'])) {
throw new apiAuthException("Error authorizing access key (result was: {$ret})");
}
// The token was upgraded to an access token, we can now continue to use it.
$this->accessToken = new apiClientOAuthConsumer(apiClientOAuthUtil::urldecodeRFC3986($matches['oauth_token']), apiClientOAuthUtil::urldecodeRFC3986($matches['oauth_token_secret']));
return $this->accessToken;
}
/**
* Sends the actual request to exchange an existing request token for an access token.
* @param string $requestToken the existing request token
* @param string $requestTokenSecret the request token secret
* @return array('http_code' => HTTP response code (200, 404, 401, etc), 'data' => the html document)
*/
protected function requestAccessToken($requestToken, $requestTokenSecret, $oauthVerifier) {
$accessToken = new apiClientOAuthConsumer($requestToken, $requestTokenSecret);
$accessRequest = apiClientOAuthRequest::from_consumer_and_token($this->consumerToken, $accessToken, "GET", $this->service['access_token_url'], array('oauth_verifier' => $oauthVerifier));
$accessRequest->sign_request($this->signatureMethod, $this->consumerToken, $accessToken);
$request = apiClient::$io->makeRequest(new apiHttpRequest($accessRequest));
if ($request->getResponseHttpCode() != 200) {
throw new apiAuthException("Could not fetch access token, http code: " . $request->getResponseHttpCode() . ', response body: '. $request->getResponseBody());
}
return $request->getResponseBody();
}
/**
* Obtains a request token from the specified provider.
*/
public function obtainRequestToken($callbackUrl, $uid) {
$callbackParams = (strpos($_SERVER['REQUEST_URI'], '?') !== false ? '&' : '?') . 'uid=' . urlencode($uid);
$ret = $this->requestRequestToken($callbackUrl . $callbackParams);
$matches = array();
preg_match('/oauth_token=(.*)&oauth_token_secret=(.*)&oauth_callback_confirmed=(.*)/', $ret, $matches);
if (!is_array($matches) || count($matches) != 4) {
throw new apiAuthException("Error retrieving request key ({$ret})");
}
return new apiClientOAuthToken(apiClientOAuthUtil::urldecodeRFC3986($matches[1]), apiClientOAuthUtil::urldecodeRFC3986($matches[2]));
}
/**
* Sends the actual request to obtain a request token.
* @return array('http_code' => HTTP response code (200, 404, 401, etc), 'data' => the html document)
*/
protected function requestRequestToken($callbackUrl) {
$requestTokenRequest = apiClientOAuthRequest::from_consumer_and_token($this->consumerToken, NULL, "GET", $this->service['request_token_url'], array());
$requestTokenRequest->set_parameter('scope', $this->service['scope']);
$requestTokenRequest->set_parameter('oauth_callback', $callbackUrl);
$requestTokenRequest->sign_request($this->signatureMethod, $this->consumerToken, NULL);
$request = apiClient::$io->makeRequest(new apiHttpRequest($requestTokenRequest));
if ($request->getResponseHttpCode() != 200) {
throw new apiAuthException("Couldn't fetch request token, http code: " . $request->getResponseHttpCode() . ', response body: '. $request->getResponseBody());
}
return $request->getResponseBody();
}
/**
* Redirect the uset to the (provider's) authorize page, if approved it should kick the user back to the call back URL
* which hopefully means we'll end up in the constructor of this class again, but with oauth_continue=1 set
* @param OAuthToken $token the request token
* @param string $callbackUrl the URL to return to post-authorization (passed to login site)
*/
public function redirectToAuthorization($token) {
$authorizeRedirect = $this->service['authorization_token_url']. $token->key;
header("Location: $authorizeRedirect");
}
/**
* Sign the request using OAuth. This uses the consumer token and key
* @param string $method the method (get/put/delete/post)
* @param string $url the url to sign (http://site/social/rest/people/1/@me)
* @param array $params the params that should be appended to the url (count=20 fields=foo, etc)
* @param string $postBody for POST/PUT requests, the postBody is included in the signature
* @return string the signed url
*/
public function sign(apiHttpRequest $request) {
// add the developer key to the request before signing it
if ($this->developerKey) {
$request->setUrl($request->getUrl() . ((strpos($request->getUrl(), '?') === false) ? '?' : '&') . 'key='.urlencode($this->developerKey));
}
// and sign the request
$oauthRequest = apiClientOAuthRequest::from_request($request->getMethod(), $request->getBaseUrl(), $request->getQueryParams());
$params = $this->mergeParameters($request->getQueryParams());
foreach ($params as $key => $val) {
if (is_array($val)) {
$val = implode(',', $val);
}
$oauthRequest->set_parameter($key, $val);
}
$oauthRequest->sign_request($this->signatureMethod, $this->consumerToken, $this->accessToken);
$authHeaders = $oauthRequest->to_header();
$headers = $request->getHeaders();
$headers[] = $authHeaders;
$request->setHeaders($headers);
// and add the access token key to it (since it doesn't include the secret, it's still secure to store this in cache)
$request->accessKey = $this->accessToken->key;
return $request;
}
/**
* Merges the supplied parameters with reasonable defaults for 2 legged oauth. User-supplied parameters
* will have precedent over the defaults.
* @param array $params the user-supplied params that will be appended to the url
* @return array the combined parameters
*/
protected function mergeParameters($params) {
$defaults = array(
'oauth_nonce' => md5(microtime() . mt_rand()),
'oauth_version' => apiClientOAuthRequest::$version, 'oauth_timestamp' => time(),
'oauth_consumer_key' => $this->consumerToken->key
);
if ($this->accessToken != null) {
$params['oauth_token'] = $this->accessToken->key;
}
return array_merge($defaults, $params);
}
public function createAuthUrl($scope) {return null;}
public function refreshToken($refreshToken) {/* noop*/}
public function revokeToken() {/* noop*/}
}