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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\Logger; |
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/** |
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* Validates if a CAS service can use server |
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* @package SimpleSAML\Module\casserver\Cas |
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*/ |
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class ServiceValidator |
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{ |
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/** |
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* @var Configuration |
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*/ |
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private $mainConfig; |
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/** |
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* ServiceValidator constructor. |
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* @param Configuration $mainConfig |
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*/ |
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public function __construct(Configuration $mainConfig) |
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{ |
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$this->mainConfig = $mainConfig; |
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} |
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/** |
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* Check that the $service is allowed, and if so return the configuration to use. |
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* @param string $service The service url. Assume to already be url decoded |
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* @return Configuration|null Return the configuration to use for this service, or null if service is not allowed |
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*/ |
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public function checkServiceURL($service) |
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{ |
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$isValidService = false; |
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$legalUrl = 'undefined'; |
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$configOverride = null; |
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foreach ($this->mainConfig->getArray('legal_service_urls', []) as $index => $value) { |
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// Support two styles: 0 => 'https://example' and 'https://example' => [ extra config ] |
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if (is_int($index)) { |
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$legalUrl = $value; |
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$configOverride = null; |
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} else { |
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$legalUrl = $index; |
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$configOverride = $value; |
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} |
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if (empty($legalUrl)) { |
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Logger::warning("Ignoring empty CAS legal service url '$legalUrl'."); |
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continue; |
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} |
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if (!ctype_alnum($legalUrl[0])) { |
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// Probably a regex. Suppress errors incase the format is invalid |
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$result = @preg_match($legalUrl, $service); |
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if ($result === 1) { |
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$isValidService = true; |
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break; |
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} elseif ($result === false) { |
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Logger::warning("Invalid CAS legal service url '$legalUrl'. Error ".preg_last_error()); |
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} |
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} elseif (strpos($service, $legalUrl) === 0) { |
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$isValidService = true; |
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break; |
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} |
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} |
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if ($isValidService) { |
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$serviceConfig = $this->mainConfig->toArray(); |
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// Return contextual information about which url rule triggered the validation |
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$serviceConfig['casService'] = [ |
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'matchingUrl' => $legalUrl, |
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'serviceUrl' => $service, |
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]; |
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if ($configOverride) { |
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$serviceConfig = array_merge($serviceConfig, $configOverride); |
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} |
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return Configuration::loadFromArray($serviceConfig); |
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} |
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return null; |
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} |
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} |
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simplesamlphp /
simplesamlphp-module-casserver
