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<?php |
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namespace SimpleSAML\Module\casserver\Cas; |
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use SimpleSAML\Configuration; |
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use SimpleSAML\Module; |
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/** |
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* Extract the user and any mapped attributes from the AuthSource attributes |
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*/ |
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class AttributeExtractor |
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{ |
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/** |
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* Determine the user and any CAS attributes based on the attributes from the |
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* authsource and the CAS configuration. |
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* |
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* The result is an array |
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* [ |
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* 'user' => 'user_value', |
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* 'attributes' => [ |
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* // any attributes |
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* ] |
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* |
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* If no CAS attributes are configured then the attributes array is empty |
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* @param array $attributes |
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* @param \SimpleSAML\Configuration $casconfig |
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* @return array |
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*/ |
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public function extractUserAndAttributes(array $attributes, Configuration $casconfig) |
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{ |
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if ($casconfig->hasValue('authproc')) { |
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$attributes = $this->invokeAuthProc($attributes, $casconfig); |
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} |
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$casUsernameAttribute = $casconfig->getValue('attrname', 'eduPersonPrincipalName'); |
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$userName = $attributes[$casUsernameAttribute][0]; |
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if (empty($userName)) { |
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throw new \Exception("No cas user defined for attribute $casUsernameAttribute"); |
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} |
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if ($casconfig->getValue('attributes', true)) { |
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$attributesToTransfer = $casconfig->getValue('attributes_to_transfer', []); |
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if (sizeof($attributesToTransfer) > 0) { |
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$casAttributes = []; |
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foreach ($attributesToTransfer as $key) { |
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if (array_key_exists($key, $attributes)) { |
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$casAttributes[$key] = $attributes[$key]; |
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} |
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} |
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} else { |
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$casAttributes = $attributes; |
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} |
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} else { |
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$casAttributes = []; |
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} |
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return [ |
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'user' => $userName, |
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'attributes' => $casAttributes |
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]; |
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} |
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/** |
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* Process any authproc filters defined in the configuration. The Authproc filters must only |
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* rely on 'Attributes' being available and not on additional SAML state. |
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* @see \SimpleSAML_Auth_ProcessingChain::parseFilter() For the original, SAML side implementation |
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* @param array $attributes The current attributes |
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* @param \SimpleSAML\Configuration $casconfig The cas configuration |
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* @return array The attributes post processing. |
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*/ |
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private function invokeAuthProc(array $attributes, Configuration $casconfig) |
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{ |
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$filters = $casconfig->getArray('authproc', []); |
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$state = [ |
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'Attributes' => $attributes |
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]; |
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foreach ($filters as $config) { |
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$className = Module::resolveClass( |
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$config['class'], |
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'Auth\Process', |
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\SimpleSAML\Auth\ProcessingFilter::class |
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); |
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// Unset 'class' to prevent the filter from interpreting it as an option |
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unset($config['class']); |
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/** @psalm-suppress InvalidStringClass */ |
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$filter = new $className($config, null); |
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$filter->process($state); |
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} |
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return $state['Attributes']; |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-casserver
