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<?php
/**
* Class for generating SAML 2.0 metadata from simpleSAMLphp metadata arrays.
*
* This class builds SAML 2.0 metadata for an entity by examining the metadata for the entity.
*
* @package simpleSAMLphp
* @version $Id$
*/
class SimpleSAML_Metadata_SAMLBuilder {
/**
* The EntityDescriptor we are building.
*/
private $entityDescriptor;
private $maxCache = NULL;
private $maxDuration = NULL;
/**
* Initialize the builder.
*
* @param string $entityId The entity id of the entity.
*/
public function __construct($entityId, $maxCache = NULL, $maxDuration = NULL) {
assert('is_string($entityId)');
$this->maxCache = $maxCache;
$this->maxDuration = $maxDuration;
$this->entityDescriptor = new SAML2_XML_md_EntityDescriptor();
$this->entityDescriptor->entityID = $entityId;
}
private function setExpiration($metadata) {
if (array_key_exists('expire', $metadata)) {
if ($metadata['expire'] - time() < $this->maxDuration)
$this->maxDuration = $metadata['expire'] - time();
}
if ($this->maxCache !== NULL)
$this->entityDescriptor->cacheDuration = 'PT' . $this->maxCache . 'S';
if ($this->maxDuration !== NULL)
$this->entityDescriptor->validUntil = time() + $this->maxDuration;
}
/**
* Retrieve the EntityDescriptor.
*
* Retrieve the EntityDescriptor element which is generated for this entity.
* @return DOMElement The EntityDescriptor element for this entity.
*/
public function getEntityDescriptor() {
$xml = $this->entityDescriptor->toXML();
$xml->ownerDocument->appendChild($xml);
return $xml;
}
/**
* Retrieve the EntityDescriptor as text.
*
* This function serializes this EntityDescriptor, and returns it as text.
*
* @param bool $formatted Whether the returned EntityDescriptor should be
* formatted first.
* @return string The serialized EntityDescriptor.
*/
public function getEntityDescriptorText($formatted = TRUE) {
assert('is_bool($formatted)');
$xml = $this->getEntityDescriptor();
if ($formatted) {
SimpleSAML_Utilities::formatDOMElement($xml);
}
return $xml->ownerDocument->saveXML();
}
/**
* @param SimpleSAML_Configuration $metadata Metadata.
* @param $e Reference to the element where the Extensions element should be included.
*/
private function addExtensions(SimpleSAML_Configuration $metadata, SAML2_XML_md_RoleDescriptor $e) {
if ($metadata->hasValue('tags')) {
$a = new SAML2_XML_saml_Attribute();
$a->Name = 'tags';
foreach ($metadata->getArray('tags') as $tag) {
$a->AttributeValue[] = new SAML2_XML_saml_AttributeValue($tag);
}
$e->Extensions[] = $a;
}
if ($metadata->hasValue('hint.cidr')) {
$a = new SAML2_XML_saml_Attribute();
$a->Name = 'hint.cidr';
foreach ($metadata->getArray('hint.cidr') as $hint) {
$a->AttributeValue[] = new SAML2_XML_saml_AttributeValue($hint);
}
$e->Extensions[] = $a;
}
if ($metadata->hasValue('scope')) {
foreach ($metadata->getArray('scope') as $scopetext) {
$s = new SAML2_XML_shibmd_Scope();
$s->scope = $scopetext;
$s->regexp = FALSE;
$e->Extensions[] = $s;
}
}
if ($metadata->hasValue('EntityAttributes')) {
$ea = new SAML2_XML_mdattr_EntityAttributes();
foreach ($metadata->getArray('EntityAttributes') as $attributeName => $attributeValues) {
$a = new SAML2_XML_saml_Attribute();
$a->Name = $attributeName;
$a->NameFormat = 'urn:oasis:names:tc:SAML:2.0:attrname-format:uri';
// Attribute names that is not URI is prefixed as this: '{nameformat}name'
if (preg_match('/^\{(.*?)\}(.*)$/', $attributeName, $matches)) {
$a->Name = $matches[2];
$nameFormat = $matches[1];
if ($nameFormat !== SAML2_Const::NAMEFORMAT_UNSPECIFIED) {
$a->NameFormat = $nameFormat;
}
}
foreach ($attributeValues as $attributeValue) {
$a->AttributeValue[] = new SAML2_XML_saml_AttributeValue($attributeValue);
}
$ea->children[] = $a;
}
$this->entityDescriptor->Extensions[] = $ea;
}
if ($metadata->hasValue('UIInfo')) {
$ui = new SAML2_XML_mdui_UIInfo();
foreach ($metadata->getArray('UIInfo') as $uiName => $uiValues) {
switch ($uiName) {
case 'DisplayName':
$ui->DisplayName = $uiValues;
break;
case 'Description':
$ui->Description = $uiValues;
break;
case 'InformationURL':
$ui->InformationURL = $uiValues;
break;
case 'PrivacyStatementURL':
$ui->PrivacyStatementURL = $uiValues;
break;
case 'Keywords':
foreach ($uiValues as $lang => $keywords) {
$uiItem = new SAML2_XML_mdui_Keywords();
$uiItem->lang = $lang;
$uiItem->Keywords = $keywords;
$ui->Keywords[] = $uiItem;
}
break;
case 'Logo':
foreach ($uiValues as $logo) {
$uiItem = new SAML2_XML_mdui_Logo();
$uiItem->url = $logo['url'];
$uiItem->width = $logo['width'];
$uiItem->height = $logo['height'];
if (isset($logo['lang'])) {
$uiItem->lang = $logo['lang'];
}
$ui->Logo[] = $uiItem;
}
break;
}
}
$e->Extensions[] = $ui;
}
if ($metadata->hasValue('DiscoHints')) {
$dh = new SAML2_XML_mdui_DiscoHints();
foreach ($metadata->getArray('DiscoHints') as $dhName => $dhValues) {
switch ($dhName) {
case 'IPHint':
$dh->IPHint = $dhValues;
break;
case 'DomainHint':
$dh->DomainHint = $dhValues;
break;
case 'GeolocationHint':
$dh->GeolocationHint = $dhValues;
break;
}
}
$e->Extensions[] = $dh;
}
}
/**
* Add Organization element.
*
* This function adds an organization element to the metadata.
*
* @param array $orgName An array with the localized OrganizatioName.
* @param array $orgDisplayName An array with the localized OrganizatioDisplayName.
* @param array $orgURL An array with the localized OrganizatioURL.
*/
public function addOrganization(array $orgName, array $orgDisplayName, array $orgURL) {
$org = new SAML2_XML_md_Organization();
$org->OrganizationName = $orgName;
$org->OrganizationDisplayName = $orgDisplayName;
$org->OrganizationURL = $orgURL;
$this->entityDescriptor->Organization = $org;
}
/**
* Add organization element based on metadata array.
*
* @param array $metadata The metadata we should extract the organization information from.
*/
public function addOrganizationInfo(array $metadata) {
if (
empty($metadata['OrganizationName']) ||
empty($metadata['OrganizationDisplayName']) ||
empty($metadata['OrganizationURL'])
) {
/* Empty or incomplete organization information. */
return;
}
$orgName = SimpleSAML_Utilities::arrayize($metadata['OrganizationName'], 'en');
$orgDisplayName = SimpleSAML_Utilities::arrayize($metadata['OrganizationDisplayName'], 'en');
$orgURL = SimpleSAML_Utilities::arrayize($metadata['OrganizationURL'], 'en');
$this->addOrganization($orgName, $orgDisplayName, $orgURL);
}
/**
* Add endpoint list to metadata.
*
* @param array $endpoints The endpoints.
* @param bool $indexed Whether the endpoints should be indexed.
* @return array Array of endpoint objects.
*/
private static function createEndpoints(array $endpoints, $indexed) {
assert('is_bool($indexed)');
$ret = array();
foreach ($endpoints as &$ep) {
if ($indexed) {
$t = new SAML2_XML_md_IndexedEndpointType();
} else {
$t = new SAML2_XML_md_EndpointType();
}
$t->Binding = $ep['Binding'];
$t->Location = $ep['Location'];
if (isset($ep['ResponseLocation'])) {
$t->ResponseLocation = $ep['ResponseLocation'];
}
if (isset($ep['hoksso:ProtocolBinding'])) {
$t->setAttributeNS(SAML2_Const::NS_HOK, 'hoksso:ProtocolBinding', SAML2_Const::BINDING_HTTP_REDIRECT);
}
if ($indexed) {
if (!isset($ep['index'])) {
/* Find the maximum index. */
$maxIndex = -1;
foreach ($endpoints as $ep) {
if (!isset($ep['index'])) {
continue;
}
if ($ep['index'] > $maxIndex) {
$maxIndex = $ep['index'];
}
}
$ep['index'] = $maxIndex + 1;
}
$t->index = $ep['index'];
}
$ret[] = $t;
}
return $ret;
}
/**
* Add an AttributeConsumingService element to the metadata.
*
* @param DOMElement $spDesc The SPSSODescriptor element.
* @param SimpleSAML_Configuration $metadata The metadata.
*/
private function addAttributeConsumingService(SAML2_XML_md_SPSSODescriptor $spDesc, SimpleSAML_Configuration $metadata) {
$attributes = $metadata->getArray('attributes', array());
$name = $metadata->getLocalizedString('name', NULL);
if ($name === NULL || count($attributes) == 0) {
/* We cannot add an AttributeConsumingService without name and attributes. */
return;
}
$attributesrequired = $metadata->getArray('attributes.required', array());
/*
* Add an AttributeConsumingService element with information as name and description and list
* of requested attributes
*/
$attributeconsumer = new SAML2_XML_md_AttributeConsumingService();
$attributeconsumer->index = 0;
$attributeconsumer->ServiceName = $name;
$attributeconsumer->ServiceDescription = $metadata->getLocalizedString('description', array());
$nameFormat = $metadata->getString('attributes.NameFormat', SAML2_Const::NAMEFORMAT_UNSPECIFIED);
foreach ($attributes as $attribute) {
$t = new SAML2_XML_md_RequestedAttribute();
$t->Name = $attribute;
if ($nameFormat !== SAML2_Const::NAMEFORMAT_UNSPECIFIED) {
$t->NameFormat = $nameFormat;
}
if (in_array($attribute, $attributesrequired)) {
$t->isRequired = true;
}
$attributeconsumer->RequestedAttribute[] = $t;
}
$spDesc->AttributeConsumingService[] = $attributeconsumer;
}
/**
* Add metadata set for entity.
*
* This function is used to add a metadata array to the entity.
*
* @param string $set The metadata set this metadata comes from.
* @param array $metadata The metadata.
*/
public function addMetadata($set, $metadata) {
assert('is_string($set)');
assert('is_array($metadata)');
$this->setExpiration($metadata);
switch ($set) {
case 'saml20-sp-remote':
$this->addMetadataSP20($metadata);
break;
case 'saml20-idp-remote':
$this->addMetadataIdP20($metadata);
break;
case 'shib13-sp-remote':
$this->addMetadataSP11($metadata);
break;
case 'shib13-idp-remote':
$this->addMetadataIdP11($metadata);
break;
case 'attributeauthority-remote':
$this->addAttributeAuthority($metadata);
break;
default:
SimpleSAML_Logger::warning('Unable to generate metadata for unknown type \'' . $set . '\'.');
}
}
/**
* Add SAML 2.0 SP metadata.
*
* @param array $metadata The metadata.
* @param array $protocols The protocols supported.
*/
public function addMetadataSP20($metadata, $protocols = array(SAML2_Const::NS_SAMLP)) {
assert('is_array($metadata)');
assert('is_array($protocols)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$e = new SAML2_XML_md_SPSSODescriptor();
$e->protocolSupportEnumeration = $protocols;
$this->addExtensions($metadata, $e);
$this->addCertificate($e, $metadata);
$e->SingleLogoutService = self::createEndpoints($metadata->getEndpoints('SingleLogoutService'), FALSE);
$e->NameIDFormat = $metadata->getArrayizeString('NameIDFormat', array());
$endpoints = $metadata->getEndpoints('AssertionConsumerService');
foreach ($metadata->getArrayizeString('AssertionConsumerService.artifact', array()) as $acs) {
$endpoints[] = array(
'Binding' => 'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Artifact',
'Location' => $acs,
);
}
$e->AssertionConsumerService = self::createEndpoints($endpoints, TRUE);
$this->addAttributeConsumingService($e, $metadata);
$this->entityDescriptor->RoleDescriptor[] = $e;
foreach ($metadata->getArray('contacts', array()) as $contact) {
if (array_key_exists('contactType', $contact) && array_key_exists('emailAddress', $contact)) {
$this->addContact($contact['contactType'], $contact);
}
}
}
/**
* Add SAML 2.0 IdP metadata.
*
* @param array $metadata The metadata.
*/
public function addMetadataIdP20($metadata) {
assert('is_array($metadata)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$e = new SAML2_XML_md_IDPSSODescriptor();
$e->protocolSupportEnumeration[] = 'urn:oasis:names:tc:SAML:2.0:protocol';
if ($metadata->getBoolean('redirect.sign', FALSE)) {
$e->WantAuthnRequestSigned = TRUE;
}
$this->addExtensions($metadata, $e);
$this->addCertificate($e, $metadata);
if ($metadata->hasValue('ArtifactResolutionService')){
$e->ArtifactResolutionService = self::createEndpoints($metadata->getEndpoints('ArtifactResolutionService'), TRUE);
}
$e->SingleLogoutService = self::createEndpoints($metadata->getEndpoints('SingleLogoutService'), FALSE);
$e->NameIDFormat = $metadata->getArrayizeString('NameIDFormat', array());
$e->SingleSignOnService = self::createEndpoints($metadata->getEndpoints('SingleSignOnService'), FALSE);
$this->entityDescriptor->RoleDescriptor[] = $e;
foreach ($metadata->getArray('contacts', array()) as $contact) {
if (array_key_exists('contactType', $contact) && array_key_exists('emailAddress', $contact)) {
$this->addContact($contact['contactType'], $contact);
}
}
}
/**
* Add SAML 1.1 SP metadata.
*
* @param array $metadata The metadata.
*/
public function addMetadataSP11($metadata) {
assert('is_array($metadata)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$e = new SAML2_XML_md_SPSSODescriptor();
$e->protocolSupportEnumeration[] = 'urn:oasis:names:tc:SAML:1.1:protocol';
$this->addCertificate($e, $metadata);
$e->NameIDFormat = $metadata->getArrayizeString('NameIDFormat', array());
$endpoints = $metadata->getEndpoints('AssertionConsumerService');
foreach ($metadata->getArrayizeString('AssertionConsumerService.artifact', array()) as $acs) {
$endpoints[] = array(
'Binding' => 'urn:oasis:names:tc:SAML:1.0:profiles:artifact-01',
'Location' => $acs,
);
}
$e->AssertionConsumerService = self::createEndpoints($endpoints, TRUE);
$this->addAttributeConsumingService($e, $metadata);
$this->entityDescriptor->RoleDescriptor[] = $e;
}
/**
* Add SAML 1.1 IdP metadata.
*
* @param array $metadata The metadata.
*/
public function addMetadataIdP11($metadata) {
assert('is_array($metadata)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$e = new SAML2_XML_md_IDPSSODescriptor();
$e->protocolSupportEnumeration[] = 'urn:oasis:names:tc:SAML:1.1:protocol';
$e->protocolSupportEnumeration[] = 'urn:mace:shibboleth:1.0';
$this->addCertificate($e, $metadata);
$e->NameIDFormat = $metadata->getArrayizeString('NameIDFormat', array());
$e->SingleSignOnService = self::createEndpoints($metadata->getEndpoints('SingleSignOnService'), FALSE);
$this->entityDescriptor->RoleDescriptor[] = $e;
}
/**
* Add a AttributeAuthorityDescriptor.
*
* @param array $metadata The AttributeAuthorityDescriptor, in the format returned by SAMLParser.
*/
public function addAttributeAuthority(array $metadata) {
assert('is_array($metadata)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$e = new SAML2_XML_md_AttributeAuthorityDescriptor();
$e->protocolSupportEnumeration = $metadata->getArray('protocols', array());
$this->addExtensions($metadata, $e);
$this->addCertificate($e, $metadata);
$e->AttributeService = self::createEndpoints($metadata->getEndpoints('AttributeService'), FALSE);
$e->AssertionIDRequestService = self::createEndpoints($metadata->getEndpoints('AssertionIDRequestService'), FALSE);
$e->NameIDFormat = $metadata->getArrayizeString('NameIDFormat', array());
$this->entityDescriptor->RoleDescriptor[] = $e;
}
/**
* Add contact information.
*
* Accepts a contact type, and an array of the following elements (all are optional):
* - emailAddress Email address (as string), or array of email addresses.
* - telephoneNumber Telephone number of contact (as string), or array of telephone numbers.
* - name Full name of contact, either as <GivenName> <SurName>, or as <SurName>, <GivenName>.
* - surName Surname of contact.
* - givenName Givenname of contact.
* - company Company name of contact.
*
* 'name' will only be used if neither givenName nor surName is present.
*
* The following contact types are allowed:
* "technical", "support", "administrative", "billing", "other"
*
* @param string $type The type of contact.
* @param array $details The details about the contact.
*/
public function addContact($type, $details) {
assert('is_string($type)');
assert('is_array($details)');
assert('in_array($type, array("technical", "support", "administrative", "billing", "other"), TRUE)');
/* Parse name into givenName and surName. */
if (isset($details['name']) && empty($details['surName']) && empty($details['givenName'])) {
$names = explode(',', $details['name'], 2);
if (count($names) === 2) {
$details['surName'] = trim($names[0]);
$details['givenName'] = trim($names[1]);
} else {
$names = explode(' ', $details['name'], 2);
if (count($names) === 2) {
$details['givenName'] = trim($names[0]);
$details['surName'] = trim($names[1]);
} else {
$details['surName'] = trim($names[0]);
}
}
}
$e = new SAML2_XML_md_ContactPerson();
$e->contactType = $type;
if (isset($details['company'])) {
$e->Company = $details['company'];
}
if (isset($details['givenName'])) {
$e->GivenName = $details['givenName'];
}
if (isset($details['surName'])) {
$e->SurName = $details['surName'];
}
if (isset($details['emailAddress'])) {
$eas = $details['emailAddress'];
if (!is_array($eas)) {
$eas = array($eas);
}
foreach ($eas as $ea) {
$e->EmailAddress[] = $ea;
}
}
if (isset($details['telephoneNumber'])) {
$tlfNrs = $details['telephoneNumber'];
if (!is_array($tlfNrs)) {
$tlfNrs = array($tlfNrs);
}
foreach ($tlfNrs as $tlfNr) {
$e->TelephoneNumber[] = $tlfNr;
}
}
$this->entityDescriptor->ContactPerson[] = $e;
}
/**
* Add a KeyDescriptor with an X509 certificate.
*
* @param SAML2_XML_md_RoleDescriptor $rd The RoleDescriptor the certificate should be added to.
* @param string $use The value of the use-attribute.
* @param string $x509data The certificate data.
*/
private function addX509KeyDescriptor(SAML2_XML_md_RoleDescriptor $rd, $use, $x509data) {
assert('in_array($use, array("encryption", "signing"), TRUE)');
assert('is_string($x509data)');
$keyDescriptor = SAML2_Utils::createKeyDescriptor($x509data);
$keyDescriptor->use = $use;
$rd->KeyDescriptor[] = $keyDescriptor;
}
/**
* Add certificate.
*
* Helper function for adding a certificate to the metadata.
*
* @param SAML2_XML_md_RoleDescriptor $rd The RoleDescriptor the certificate should be added to.
* @param SimpleSAML_Configuration $metadata The metadata for the entity.
*/
private function addCertificate(SAML2_XML_md_RoleDescriptor $rd, SimpleSAML_Configuration $metadata) {
$keys = $metadata->getPublicKeys();
if ($keys !== NULL) {
foreach ($keys as $key) {
if ($key['type'] !== 'X509Certificate') {
continue;
}
if (!isset($key['signing']) || $key['signing'] === TRUE) {
$this->addX509KeyDescriptor($rd, 'signing', $key['X509Certificate']);
}
if (!isset($key['encryption']) || $key['encryption'] === TRUE) {
$this->addX509KeyDescriptor($rd, 'encryption', $key['X509Certificate']);
}
}
}
if ($metadata->hasValue('https.certData')) {
$this->addX509KeyDescriptor($rd, 'signing', $metadata->getString('https.certData'));
}
}
}
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