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<?php |
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namespace SimpleSAML\Module\authtwitter\Auth\Source; |
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use League\OAuth1\Client\Server\Twitter as TwitterServer; |
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use League\OAuth1\Client\Credentials\TemporaryCredentials; |
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use SimpleSAML\Assert\Assert; |
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use SimpleSAML\Auth; |
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use SimpleSAML\Configuration; |
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use SimpleSAML\Error; |
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use SimpleSAML\Logger; |
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use SimpleSAML\Module; |
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use SimpleSAML\Utils; |
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use Symfony\Component\HttpFoundation\Request; |
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/** |
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* Authenticate using Twitter. |
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* |
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* @package simplesamlphp/simplesamlphp-module-authtwitter |
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*/ |
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class Twitter extends Auth\Source |
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{ |
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/** |
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* The string used to identify our states. |
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*/ |
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public const STAGE_TEMP = 'twitter:temp'; |
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/** |
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* The key of the AuthId field in the state. |
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*/ |
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public const AUTHID = 'twitter:AuthId'; |
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/** @var string */ |
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private string $key; |
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/** @var string */ |
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private string $secret; |
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/** @var string */ |
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private string $scope; |
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/** @var bool */ |
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private bool $force_login; |
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/** |
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* Constructor for this authentication source. |
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* |
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* @param array $info Information about this authentication source. |
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* @param array $config Configuration. |
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*/ |
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public function __construct(array $info, array $config) |
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{ |
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// Call the parent constructor first, as required by the interface |
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parent::__construct($info, $config); |
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$configObject = Configuration::loadFromArray( |
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$config, |
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'authsources[' . var_export($this->authId, true) . ']' |
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); |
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$this->key = $configObject->getString('key'); |
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$this->secret = $configObject->getString('secret'); |
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$this->scope = $configObject->getString('scope'); |
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$this->force_login = $configObject->getBoolean('force_login', false); |
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} |
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/** |
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* Log-in using Twitter platform |
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* |
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* @param array &$state Information about the current authentication. |
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*/ |
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public function authenticate(array &$state): void |
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{ |
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$this->temporaryCredentials($state); |
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} |
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/** |
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* Retrieve temporary credentials |
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* |
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* @param array &$state Information about the current authentication. |
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*/ |
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private function temporaryCredentials(array &$state): void |
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{ |
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// We are going to need the authId in order to retrieve this authentication source later |
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$state[self::AUTHID] = $this->authId; |
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$stateId = base64_encode(Auth\State::saveState($state, self::STAGE_TEMP)); |
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$server = new TwitterServer( |
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[ |
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'identifier' => $this->key, |
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'secret' => $this->secret, |
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'callback_uri' => Module::getModuleURL('authtwitter/linkback.php') |
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. '?AuthState=' . $stateId . '&force_login=' . strval($this->force_login), |
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] |
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); |
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// First part of OAuth 1.0 authentication is retrieving temporary credentials. |
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// These identify you as a client to the server. |
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$temporaryCredentials = $server->getTemporaryCredentials(); |
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$state['authtwitter:authdata:requestToken'] = serialize($temporaryCredentials); |
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Auth\State::saveState($state, self::STAGE_TEMP); |
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$server->authorize($temporaryCredentials); |
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exit; |
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} |
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/** |
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* @param array &$state |
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*/ |
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public function finalStep(TemporaryCredentials $requestToken, string $oauth_token, string $oauth_verifier): void |
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{ |
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$server = new TwitterServer( |
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[ |
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'identifier' => $this->key, |
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'secret' => $this->secret, |
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] |
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); |
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$tokenCredentials = $server->getTokenCredentials( |
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$requestToken, |
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$oauth_token, |
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$oauth_verifier |
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); |
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$state['token_credentials'] = serialize($tokenCredentials); |
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$userdata = $server->getUserDetails($tokenCredentials); |
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$attributes = []; |
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foreach ($userdata->getIterator() as $key => $value) { |
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if (is_string($value)) { |
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$attributes['twitter.' . $key] = [$value]; |
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} |
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} |
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$attributes['twitter_at_screen_name'] = ['@' . $userdata->nickname]; |
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$attributes['twitter_screen_n_realm'] = [$userdata->nickname . '@twitter.com']; |
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$attributes['twitter_targetedID'] = ['http://twitter.com!' . $userdata->uid]; |
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$state['Attributes'] = $attributes; |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-authtwitter
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