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<?php |
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namespace SimpleSAML\Module\smartattributes\Auth\Process; |
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use Webmozart\Assert\Assert; |
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class SmartID extends \SimpleSAML\Auth\ProcessingFilter |
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{ |
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/** |
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* Which attributes to use as identifiers? |
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* |
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* IMPORTANT: If you use the (default) attributemaps (twitter2name, facebook2name, |
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* etc., be sure to comment out the entries that map xxx_targetedID to |
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* eduPersonTargetedID, or there will be no way to see its origin any more. |
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* |
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* @var array |
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*/ |
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private $candidates = [ |
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'eduPersonTargetedID', |
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'eduPersonPrincipalName', |
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'pairwise-id', |
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'subject-id', |
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'openid', |
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'facebook_targetedID', |
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'twitter_targetedID', |
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'windowslive_targetedID', |
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'linkedin_targetedID', |
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]; |
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/** |
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* @var string The name of the generated ID attribute. |
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*/ |
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private $id_attribute = 'smart_id'; |
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/** |
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* Whether to append the AuthenticatingAuthority, separated by '!' |
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* This only works when SSP is used as a gateway. |
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* @var bool |
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*/ |
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private $add_authority = true; |
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/** |
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* Whether to prepend the CandidateID, separated by ':' |
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* @var bool |
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*/ |
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private $add_candidate = true; |
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/** |
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* Attributes which should be added/appended. |
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* |
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* @var array Associative array of arrays. |
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*/ |
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private $attributes = []; |
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/** |
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* @param array $config |
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* @param mixed $reserved |
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* @throws \Exception |
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*/ |
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public function __construct($config, $reserved) |
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{ |
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parent::__construct($config, $reserved); |
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Assert::isArray($config); |
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if (array_key_exists('candidates', $config)) { |
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$this->candidates = $config['candidates']; |
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if (!is_array($this->candidates)) { |
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throw new \Exception('SmartID authproc configuration error: \'candidates\' should be an array.'); |
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} |
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} |
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if (array_key_exists('id_attribute', $config)) { |
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$this->id_attribute = $config['id_attribute']; |
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if (!is_string($this->id_attribute)) { |
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throw new \Exception('SmartID authproc configuration error: \'id_attribute\' should be a string.'); |
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} |
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} |
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if (array_key_exists('add_authority', $config)) { |
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$this->add_authority = $config['add_authority']; |
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if (!is_bool($this->add_authority)) { |
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throw new \Exception('SmartID authproc configuration error: \'add_authority\' should be a boolean.'); |
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} |
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} |
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if (array_key_exists('add_candidate', $config)) { |
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$this->add_candidate = $config['add_candidate']; |
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if (!is_bool($this->add_candidate)) { |
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throw new \Exception('SmartID authproc configuration error: \'add_candidate\' should be a boolean.'); |
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} |
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} |
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} |
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/** |
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* @param array $attributes |
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* @param array $request |
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* @return string |
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* @throws \SimpleSAML\Error\Exception |
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*/ |
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private function addID($attributes, $request) |
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{ |
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$state = $request['saml:sp:State']; |
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foreach ($this->candidates as $idCandidate) { |
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if (isset($attributes[$idCandidate][0])) { |
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if (($this->add_authority) && (isset($state['saml:AuthenticatingAuthority'][0]))) { |
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return ($this->add_candidate ? $idCandidate.':' : '').$attributes[$idCandidate][0].'!'. |
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$state['saml:AuthenticatingAuthority'][0]; |
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} else { |
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return ($this->add_candidate ? $idCandidate.':' : '').$attributes[$idCandidate][0]; |
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} |
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} |
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} |
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/* |
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* At this stage no usable id_candidate has been detected. |
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*/ |
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throw new \SimpleSAML\Error\Exception('This service needs at least one of the following |
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attributes to identity users: '.implode(', ', $this->candidates).'. Unfortunately not |
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one of them was detected. Please ask your institution administrator to release one of |
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them, or try using another identity provider.'); |
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} |
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/** |
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* Apply filter to add or replace attributes. |
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* |
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* Add or replace existing attributes with the configured values. |
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* |
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* @param array &$request The current request |
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* @return void |
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*/ |
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public function process(&$request) |
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{ |
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Assert::isArray($request); |
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Assert::keyExists($request, 'Attributes'); |
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$id = $this->addID($request['Attributes'], $request); |
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if (isset($id)) { |
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$request['Attributes'][$this->id_attribute] = [$id]; |
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} |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-smartattributes
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