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<?php |
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namespace SimpleSAML\Module\adfs\IdP; |
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use RobRichards\XMLSecLibs\XMLSecurityDSig; |
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use RobRichards\XMLSecLibs\XMLSecurityKey; |
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use SAML2\Constants; |
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use SAML2\DOMDocumentFactory; |
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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\Metadata\MetaDataStorageHandler; |
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use SimpleSAML\Module; |
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use SimpleSAML\Utils; |
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use SimpleSAML\XHTML\Template; |
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class ADFS |
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{ |
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/** |
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* @param \SimpleSAML\IdP $idp |
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* @return void |
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* @throws \SimpleSAML\Error\Error |
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*/ |
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public static function receiveAuthnRequest(IdP $idp): void |
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{ |
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try { |
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parse_str($_SERVER['QUERY_STRING'], $query); |
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$requestid = $query['wctx']; |
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$issuer = $query['wtrealm']; |
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$metadata = MetaDataStorageHandler::getMetadataHandler(); |
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$spMetadata = $metadata->getMetaDataConfig($issuer, 'adfs-sp-remote'); |
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Logger::info('ADFS - IdP.prp: Incoming Authentication request: ' . $issuer . ' id ' . $requestid); |
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} catch (\Exception $exception) { |
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throw new Error\Error('PROCESSAUTHNREQUEST', $exception); |
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} |
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$state = [ |
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'Responder' => [ADFS::class, 'sendResponse'], |
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'SPMetadata' => $spMetadata->toArray(), |
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'ForceAuthn' => false, |
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'isPassive' => false, |
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'adfs:wctx' => $requestid, |
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'adfs:wreply' => false |
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]; |
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if (isset($query['wreply']) && !empty($query['wreply'])) { |
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$state['adfs:wreply'] = Utils\HTTP::checkURLAllowed($query['wreply']); |
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} |
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$idp->handleAuthenticationRequest($state); |
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} |
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/** |
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* @param string $issuer |
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* @param string $target |
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* @param string $nameid |
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* @param array $attributes |
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* @param int $assertionLifetime |
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* @return string |
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*/ |
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private static function generateResponse( |
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string $issuer, |
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string $target, |
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string $nameid, |
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array $attributes, |
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int $assertionLifetime |
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): string { |
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$issueInstant = Utils\Time::generateTimestamp(); |
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$notBefore = Utils\Time::generateTimestamp(time() - 30); |
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$assertionExpire = Utils\Time::generateTimestamp(time() + $assertionLifetime); |
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$assertionID = Utils\Random::generateID(); |
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$nameidFormat = 'http://schemas.xmlsoap.org/claims/UPN'; |
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$nameid = htmlspecialchars($nameid); |
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if (Utils\HTTP::isHTTPS()) { |
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$method = Constants::AC_PASSWORD_PROTECTED_TRANSPORT; |
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} else { |
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$method = Constants::AC_PASSWORD; |
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} |
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$result = <<<MSG |
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<wst:RequestSecurityTokenResponse xmlns:wst="http://schemas.xmlsoap.org/ws/2005/02/trust"> |
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<wst:RequestedSecurityToken> |
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<saml:Assertion Issuer="$issuer" IssueInstant="$issueInstant" AssertionID="$assertionID" MinorVersion="1" MajorVersion="1" xmlns:saml="urn:oasis:names:tc:SAML:1.0:assertion"> |
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<saml:Conditions NotOnOrAfter="$assertionExpire" NotBefore="$notBefore"> |
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<saml:AudienceRestrictionCondition> |
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<saml:Audience>$target</saml:Audience> |
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</saml:AudienceRestrictionCondition> |
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</saml:Conditions> |
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<saml:AuthenticationStatement AuthenticationMethod="$method" AuthenticationInstant="$issueInstant"> |
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<saml:Subject> |
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<saml:NameIdentifier Format="$nameidFormat">$nameid</saml:NameIdentifier> |
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</saml:Subject> |
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</saml:AuthenticationStatement> |
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<saml:AttributeStatement> |
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<saml:Subject> |
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<saml:NameIdentifier Format="$nameidFormat">$nameid</saml:NameIdentifier> |
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</saml:Subject> |
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MSG; |
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foreach ($attributes as $name => $values) { |
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if ((!is_array($values)) || (count($values) == 0)) { |
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continue; |
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} |
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list($namespace, $name) = Utils\Attributes::getAttributeNamespace( |
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$name, |
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'http://schemas.xmlsoap.org/claims' |
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); |
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foreach ($values as $value) { |
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if ((!isset($value)) || ($value === '')) { |
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continue; |
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} |
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$value = htmlspecialchars($value); |
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$result .= <<<MSG |
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<saml:Attribute AttributeNamespace="$namespace" AttributeName="$name"> |
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<saml:AttributeValue>$value</saml:AttributeValue> |
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</saml:Attribute> |
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MSG; |
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} |
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} |
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$result .= <<<MSG |
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</saml:AttributeStatement> |
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</saml:Assertion> |
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</wst:RequestedSecurityToken> |
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<wsp:AppliesTo xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy"> |
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<wsa:EndpointReference xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing"> |
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<wsa:Address>$target</wsa:Address> |
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</wsa:EndpointReference> |
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</wsp:AppliesTo> |
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</wst:RequestSecurityTokenResponse> |
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MSG; |
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return $result; |
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} |
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/** |
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* @param string $response |
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* @param string $key |
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* @param string $cert |
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* @param string $algo |
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* @param string|null $passphrase |
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* @return string |
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*/ |
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private static function signResponse( |
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string $response, |
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string $key, |
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string $cert, |
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string $algo, |
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string $passphrase = null |
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): string { |
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$objXMLSecDSig = new XMLSecurityDSig(); |
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$objXMLSecDSig->idKeys = ['AssertionID']; |
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$objXMLSecDSig->setCanonicalMethod(XMLSecurityDSig::EXC_C14N); |
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$responsedom = DOMDocumentFactory::fromString(str_replace("\r", "", $response)); |
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$firstassertionroot = $responsedom->getElementsByTagName('Assertion')->item(0); |
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if (is_null($firstassertionroot)) { |
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throw new \Exception("No assertion found in response."); |
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} |
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$objXMLSecDSig->addReferenceList( |
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[$firstassertionroot], |
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XMLSecurityDSig::SHA256, |
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['http://www.w3.org/2000/09/xmldsig#enveloped-signature', XMLSecurityDSig::EXC_C14N], |
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['id_name' => 'AssertionID'] |
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); |
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$objKey = new XMLSecurityKey($algo, ['type' => 'private']); |
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if (is_string($passphrase)) { |
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$objKey->passphrase = $passphrase; |
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} |
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$objKey->loadKey($key, true); |
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$objXMLSecDSig->sign($objKey); |
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if ($cert) { |
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$public_cert = file_get_contents($cert); |
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$objXMLSecDSig->add509Cert($public_cert, true); |
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} |
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187
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/** @var \DOMElement $objXMLSecDSig->sigNode */ |
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$newSig = $responsedom->importNode($objXMLSecDSig->sigNode, true); |
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$firstassertionroot->appendChild($newSig); |
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return $responsedom->saveXML(); |
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} |
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193
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194
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/** |
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* @param string $url |
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196
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* @param string $wresult |
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197
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* @param string $wctx |
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* @return void |
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*/ |
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private static function postResponse(string $url, string $wresult, string $wctx): void |
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{ |
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202
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$config = Configuration::getInstance(); |
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203
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$t = new Template($config, 'adfs:postResponse.twig'); |
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$t->data['baseurlpath'] = Module::getModuleURL('adfs'); |
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$t->data['url'] = $url; |
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$t->data['wresult'] = $wresult; |
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$t->data['wctx'] = $wctx; |
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$t->show(); |
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209
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} |
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210
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211
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212
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/** |
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213
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* Get the metadata of a given hosted ADFS IdP. |
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* |
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215
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* @param string $entityid The entity ID of the hosted ADFS IdP whose metadata we want to fetch. |
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216
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* |
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217
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* @return array |
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218
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* @throws \SimpleSAML\Error\Exception |
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219
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* @throws \SimpleSAML\Error\MetadataNotFound |
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220
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*/ |
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221
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public static function getHostedMetadata(string $entityid): array |
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222
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{ |
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223
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$handler = MetaDataStorageHandler::getMetadataHandler(); |
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224
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$config = $handler->getMetaDataConfig($entityid, 'adfs-idp-hosted'); |
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225
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226
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$endpoint = Module::getModuleURL('adfs/idp/prp.php'); |
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$metadata = [ |
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'metadata-set' => 'adfs-idp-hosted', |
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'entityid' => $entityid, |
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230
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'SingleSignOnService' => [ |
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231
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[ |
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'Binding' => Constants::BINDING_HTTP_REDIRECT, |
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'Location' => $endpoint, |
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] |
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], |
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236
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'SingleLogoutService' => [ |
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237
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'Binding' => Constants::BINDING_HTTP_REDIRECT, |
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'Location' => $endpoint, |
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], |
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240
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'NameIDFormat' => $config->getString('NameIDFormat', Constants::NAMEID_TRANSIENT), |
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241
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'contacts' => [], |
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]; |
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243
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244
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// add certificates |
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245
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$keys = []; |
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246
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$certInfo = Utils\Crypto::loadPublicKey($config, false, 'new_'); |
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$hasNewCert = false; |
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if ($certInfo !== null) { |
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$keys[] = [ |
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250
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'type' => 'X509Certificate', |
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'signing' => true, |
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'encryption' => true, |
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253
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'X509Certificate' => $certInfo['certData'], |
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254
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'prefix' => 'new_', |
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255
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]; |
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256
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$hasNewCert = true; |
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257
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} |
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258
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259
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/** @var array $certInfo */ |
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260
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$certInfo = Utils\Crypto::loadPublicKey($config, true); |
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261
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$keys[] = [ |
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262
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'type' => 'X509Certificate', |
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263
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'signing' => true, |
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264
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'encryption' => $hasNewCert === false, |
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265
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'X509Certificate' => $certInfo['certData'], |
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266
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'prefix' => '', |
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267
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]; |
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268
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269
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if ($config->hasValue('https.certificate')) { |
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270
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/** @var array $httpsCert */ |
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271
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$httpsCert = Utils\Crypto::loadPublicKey($config, true, 'https.'); |
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272
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$keys[] = [ |
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273
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'type' => 'X509Certificate', |
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274
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'signing' => true, |
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275
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'encryption' => false, |
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276
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'X509Certificate' => $httpsCert['certData'], |
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277
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'prefix' => 'https.' |
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278
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]; |
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279
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} |
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280
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$metadata['keys'] = $keys; |
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281
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282
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// add organization information |
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283
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if ($config->hasValue('OrganizationName')) { |
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284
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$metadata['OrganizationName'] = $config->getLocalizedString('OrganizationName'); |
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285
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$metadata['OrganizationDisplayName'] = $config->getLocalizedString( |
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286
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'OrganizationDisplayName', |
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287
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$metadata['OrganizationName'] |
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288
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); |
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289
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290
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if (!$config->hasValue('OrganizationURL')) { |
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291
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throw new Error\Exception('If OrganizationName is set, OrganizationURL must also be set.'); |
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292
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} |
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293
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$metadata['OrganizationURL'] = $config->getLocalizedString('OrganizationURL'); |
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294
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} |
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295
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296
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// add scope |
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297
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if ($config->hasValue('scope')) { |
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298
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$metadata['scope'] = $config->getArray('scope'); |
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299
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} |
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300
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301
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// add extensions |
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302
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if ($config->hasValue('EntityAttributes')) { |
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303
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$metadata['EntityAttributes'] = $config->getArray('EntityAttributes'); |
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304
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305
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// check for entity categories |
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306
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if (Utils\Config\Metadata::isHiddenFromDiscovery($metadata)) { |
|
307
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$metadata['hide.from.discovery'] = true; |
|
308
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} |
|
309
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} |
|
310
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311
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if ($config->hasValue('UIInfo')) { |
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312
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$metadata['UIInfo'] = $config->getArray('UIInfo'); |
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313
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} |
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314
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|
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|
|
315
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|
|
if ($config->hasValue('DiscoHints')) { |
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316
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$metadata['DiscoHints'] = $config->getArray('DiscoHints'); |
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317
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|
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} |
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318
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|
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|
|
319
|
|
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if ($config->hasValue('RegistrationInfo')) { |
|
320
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|
|
$metadata['RegistrationInfo'] = $config->getArray('RegistrationInfo'); |
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321
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} |
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322
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323
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// add contact information |
|
324
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|
|
$globalConfig = Configuration::getInstance(); |
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325
|
|
|
$email = $globalConfig->getString('technicalcontact_email', false); |
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326
|
|
|
if ($email && $email !== '[email protected]') { |
|
327
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|
|
$contact = [ |
|
328
|
|
|
'emailAddress' => $email, |
|
329
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|
|
'name' => $globalConfig->getString('technicalcontact_name', null), |
|
330
|
|
|
'contactType' => 'technical', |
|
331
|
|
|
]; |
|
332
|
|
|
$metadata['contacts'][] = Utils\Config\Metadata::getContact($contact); |
|
333
|
|
|
} |
|
334
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|
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|
|
335
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|
|
return $metadata; |
|
336
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|
|
} |
|
337
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|
338
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|
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|
|
339
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|
|
/** |
|
340
|
|
|
* @param array $state |
|
341
|
|
|
* @throws \Exception |
|
342
|
|
|
* @return void |
|
343
|
|
|
*/ |
|
344
|
|
|
public static function sendResponse(array $state): void |
|
345
|
|
|
{ |
|
346
|
|
|
$spMetadata = $state["SPMetadata"]; |
|
347
|
|
|
$spEntityId = $spMetadata['entityid']; |
|
348
|
|
|
$spMetadata = Configuration::loadFromArray( |
|
349
|
|
|
$spMetadata, |
|
350
|
|
|
'$metadata[' . var_export($spEntityId, true) . ']' |
|
351
|
|
|
); |
|
352
|
|
|
|
|
353
|
|
|
$attributes = $state['Attributes']; |
|
354
|
|
|
|
|
355
|
|
|
$nameidattribute = $spMetadata->getValue('simplesaml.nameidattribute'); |
|
356
|
|
|
if (!empty($nameidattribute)) { |
|
357
|
|
|
if (!array_key_exists($nameidattribute, $attributes)) { |
|
358
|
|
|
throw new \Exception('simplesaml.nameidattribute does not exist in resulting attribute set'); |
|
359
|
|
|
} |
|
360
|
|
|
$nameid = $attributes[$nameidattribute][0]; |
|
361
|
|
|
} else { |
|
362
|
|
|
$nameid = Utils\Random::generateID(); |
|
363
|
|
|
} |
|
364
|
|
|
|
|
365
|
|
|
$idp = IdP::getByState($state); |
|
366
|
|
|
$idpMetadata = $idp->getConfig(); |
|
367
|
|
|
$idpEntityId = $idpMetadata->getString('entityid'); |
|
368
|
|
|
|
|
369
|
|
|
$idp->addAssociation([ |
|
370
|
|
|
'id' => 'adfs:' . $spEntityId, |
|
371
|
|
|
'Handler' => ADFS::class, |
|
372
|
|
|
'adfs:entityID' => $spEntityId, |
|
373
|
|
|
]); |
|
374
|
|
|
|
|
375
|
|
|
$assertionLifetime = $spMetadata->getInteger('assertion.lifetime', null); |
|
376
|
|
|
if ($assertionLifetime === null) { |
|
377
|
|
|
$assertionLifetime = $idpMetadata->getInteger('assertion.lifetime', 300); |
|
378
|
|
|
} |
|
379
|
|
|
|
|
380
|
|
|
$response = ADFS::generateResponse($idpEntityId, $spEntityId, $nameid, $attributes, $assertionLifetime); |
|
381
|
|
|
|
|
382
|
|
|
$privateKeyFile = Utils\Config::getCertPath($idpMetadata->getString('privatekey')); |
|
383
|
|
|
$certificateFile = Utils\Config::getCertPath($idpMetadata->getString('certificate')); |
|
384
|
|
|
$passphrase = $idpMetadata->getString('privatekey_pass', null); |
|
385
|
|
|
|
|
386
|
|
|
$algo = $spMetadata->getString('signature.algorithm', null); |
|
387
|
|
|
if ($algo === null) { |
|
388
|
|
|
$algo = $idpMetadata->getString('signature.algorithm', XMLSecurityKey::RSA_SHA256); |
|
389
|
|
|
} |
|
390
|
|
|
$wresult = ADFS::signResponse($response, $privateKeyFile, $certificateFile, $algo, $passphrase); |
|
391
|
|
|
|
|
392
|
|
|
$wctx = $state['adfs:wctx']; |
|
393
|
|
|
$wreply = $state['adfs:wreply'] ? : $spMetadata->getValue('prp'); |
|
394
|
|
|
ADFS::postResponse($wreply, $wresult, $wctx); |
|
|
|
|
|
|
395
|
|
|
} |
|
396
|
|
|
|
|
397
|
|
|
|
|
398
|
|
|
/** |
|
399
|
|
|
* @param \SimpleSAML\IdP $idp |
|
400
|
|
|
* @param array $state |
|
401
|
|
|
* @return void |
|
402
|
|
|
*/ |
|
403
|
|
|
public static function sendLogoutResponse(IdP $idp, array $state): void |
|
|
|
|
|
|
404
|
|
|
{ |
|
405
|
|
|
// NB:: we don't know from which SP the logout request came from |
|
406
|
|
|
$idpMetadata = $idp->getConfig(); |
|
407
|
|
|
HTTP::redirectTrustedURL( |
|
|
|
|
|
|
408
|
|
|
$idpMetadata->getValue('redirect-after-logout', Utils\HTTP::getBaseURL()) |
|
409
|
|
|
); |
|
410
|
|
|
} |
|
411
|
|
|
|
|
412
|
|
|
|
|
413
|
|
|
/** |
|
414
|
|
|
* @param \SimpleSAML\IdP $idp |
|
415
|
|
|
* @throws \Exception |
|
416
|
|
|
* @return void |
|
417
|
|
|
*/ |
|
418
|
|
|
public static function receiveLogoutMessage(IdP $idp): void |
|
419
|
|
|
{ |
|
420
|
|
|
// if a redirect is to occur based on wreply, we will redirect to url as |
|
421
|
|
|
// this implies an override to normal sp notification |
|
422
|
|
|
if (isset($_GET['wreply']) && !empty($_GET['wreply'])) { |
|
423
|
|
|
$idp->doLogoutRedirect(Utils\HTTP::checkURLAllowed($_GET['wreply'])); |
|
424
|
|
|
throw new \Exception("Code should never be reached"); |
|
425
|
|
|
} |
|
426
|
|
|
|
|
427
|
|
|
$state = [ |
|
428
|
|
|
'Responder' => [ADFS::class, 'sendLogoutResponse'], |
|
429
|
|
|
]; |
|
430
|
|
|
$assocId = null; |
|
431
|
|
|
// TODO: verify that this is really no problem for: |
|
432
|
|
|
// a) SSP, because there's no caller SP. |
|
433
|
|
|
// b) ADFS SP because caller will be called back.. |
|
434
|
|
|
$idp->handleLogoutRequest($state, $assocId); |
|
435
|
|
|
} |
|
436
|
|
|
|
|
437
|
|
|
|
|
438
|
|
|
/** |
|
439
|
|
|
* accepts an association array, and returns a URL that can be accessed to terminate the association |
|
440
|
|
|
* |
|
441
|
|
|
* @param \SimpleSAML\IdP $idp |
|
442
|
|
|
* @param array $association |
|
443
|
|
|
* @param string $relayState |
|
444
|
|
|
* @return string |
|
445
|
|
|
*/ |
|
446
|
|
|
public static function getLogoutURL(IdP $idp, array $association, string $relayState): string |
|
447
|
|
|
{ |
|
448
|
|
|
$metadata = MetaDataStorageHandler::getMetadataHandler(); |
|
449
|
|
|
$spMetadata = $metadata->getMetaDataConfig($association['adfs:entityID'], 'adfs-sp-remote'); |
|
450
|
|
|
$returnTo = Module::getModuleURL( |
|
451
|
|
|
'adfs/idp/prp.php?assocId=' . urlencode($association["id"]) . '&relayState=' . urlencode($relayState) |
|
452
|
|
|
); |
|
453
|
|
|
return $spMetadata->getValue('prp') . '?wa=wsignoutcleanup1.0&wreply=' . urlencode($returnTo); |
|
454
|
|
|
} |
|
455
|
|
|
} |
|
456
|
|
|
|
simplesamlphp /
simplesamlphp-module-adfs
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The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g.
excluded_paths: ["lib/*"], you can move it to the dependency path list as follows:For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths