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Jaime Perez Crespo authoredJaime Perez Crespo authored
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SAMLBuilder.php 26.76 KiB
<?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
*/
class SimpleSAML_Metadata_SAMLBuilder
{
/**
* The EntityDescriptor we are building.
*
* @var SAML2_XML_md_EntityDescriptor
*/
private $entityDescriptor;
/**
* The maximum time in seconds the metadata should be cached.
*
* @var int|null
*/
private $maxCache = null;
/**
* The maximum time in seconds since the current time that this metadata should be considered valid.
*
* @var int|null
*/
private $maxDuration = null;
/**
* Initialize the SAML builder.
*
* @param string $entityId The entity id of the entity.
* @param double|null $maxCache The maximum time in seconds the metadata should be cached. Defaults to null
* @param double|null $maxDuration The maximum time in seconds this metadata should be considered valid. Defaults
* to null.
*/
public function __construct($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 element which is generated for this entity.
*
* @return DOMElement The EntityDescriptor element of 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\Utils\XML::formatDOMElement($xml);
}
return $xml->ownerDocument->saveXML();
}
/**
* Add a SecurityTokenServiceType for ADFS metadata.
*
* @param array $metadata The metadata with the information about the SecurityTokenServiceType.
*/
public function addSecurityTokenServiceType($metadata)
{
assert('is_array($metadata)');
assert('isset($metadata["entityid"])');
assert('isset($metadata["metadata-set"])');
$metadata = SimpleSAML_Configuration::loadFromArray($metadata, $metadata['entityid']);
$defaultEndpoint = $metadata->getDefaultEndpoint('SingleSignOnService');
$e = new sspmod_adfs_SAML2_XML_fed_SecurityTokenServiceType();
$e->Location = $defaultEndpoint['Location'];
$this->addCertificate($e, $metadata);
$this->entityDescriptor->RoleDescriptor[] = $e;
}
/**
* Add extensions to the metadata.
*
* @param SimpleSAML_Configuration $metadata The metadata to get extensions from.
* @param SAML2_XML_md_RoleDescriptor $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;
// Check whether $ ^ ( ) * | \ are in a scope -> assume regex.
if (1 === preg_match('/[\$\^\)\(\*\|\\\\]/', $scopetext)) {
$s->regexp = true;
} else {
$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('RegistrationInfo')) {
$ri = new SAML2_XML_mdrpi_RegistrationInfo();
foreach ($metadata->getArray('RegistrationInfo') as $riName => $riValues) {
switch ($riName) {
case 'authority':
$ri->registrationAuthority = $riValues;
break;
case 'instant':
$ri->registrationInstant = SAML2_Utils::xsDateTimeToTimestamp($riValues);
break;
case 'policies':
$ri->RegistrationPolicy = $riValues;
break;
} }
$this->entityDescriptor->Extensions[] = $ri;
}
if ($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 an Organization element based on data passed as parameters
*
* @param array $orgName An array with the localized OrganizationName.
* @param array $orgDisplayName An array with the localized OrganizationDisplayName. * @param array $orgURL An array with the localized OrganizationURL.
*/
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 an 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;
}
$orgName = SimpleSAML\Utils\Arrays::arrayize($metadata['OrganizationName'], 'en');
$orgDisplayName = SimpleSAML\Utils\Arrays::arrayize($metadata['OrganizationDisplayName'], 'en');
$orgURL = SimpleSAML\Utils\Arrays::arrayize($metadata['OrganizationURL'], 'en');
$this->addOrganization($orgName, $orgDisplayName, $orgURL);
}
/**
* Add a list of endpoints to metadata.
*
* @param array $endpoints The endpoints.
* @param bool $indexed Whether the endpoints should be indexed.
*
* @return array An array of endpoint objects, either SAML2_XML_md_EndpointType or SAML2_XML_md_IndexedEndpointType.
*/
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 SAML2_XML_md_SPSSODescriptor $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 $friendlyName => $attribute) {
$t = new SAML2_XML_md_RequestedAttribute();
$t->Name = $attribute;
if (!is_int($friendlyName)) {
$t->FriendlyName = $friendlyName;
}
if ($nameFormat !== SAML2_Const::NAMEFORMAT_UNSPECIFIED) {
$t->NameFormat = $nameFormat;
}
if (in_array($attribute, $attributesrequired)) {
$t->isRequired = true;
}
$attributeconsumer->RequestedAttribute[] = $t; }
$spDesc->AttributeConsumingService[] = $attributeconsumer;
}
/**
* Add a specific type of metadata to an 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 $protocols The protocols supported. Defaults to SAML2_Const::NS_SAMLP.
*/
public function addMetadataSP20($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 = $protocols;
if ($metadata->hasValue('saml20.sign.assertion')) {
$e->WantAssertionsSigned = $metadata->getBoolean('saml20.sign.assertion');
}
if ($metadata->hasValue('redirect.validate')) {
$e->AuthnRequestsSigned = $metadata->getBoolean('redirect.validate');
} elseif ($metadata->hasValue('validate.authnrequest')) {
$e->AuthnRequestsSigned = $metadata->getBoolean('validate.authnrequest');
}
$this->addExtensions($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'], \SimpleSAML\Utils\Config\Metadata::getContact($contact));
}
}
}
/**
* Add metadata of a SAML 2.0 identity provider.
*
* @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->hasValue('sign.authnrequest')) {
$e->WantAuthnRequestsSigned = $metadata->getBoolean('sign.authnrequest');
} elseif ($metadata->hasValue('redirect.sign')) {
$e->WantAuthnRequestsSigned = $metadata->getBoolean('redirect.sign');
}
$this->addExtensions($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'], \SimpleSAML\Utils\Config\Metadata::getContact($contact));
}
}
}
/**
* Add metadata of a SAML 1.1 service provider.
*
* @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 metadata of a SAML 1.1 identity provider.
*
* @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 metadata of a SAML attribute authority.
*
* @param array $metadata The AttributeAuthorityDescriptor, in the format returned by
* SimpleSAML_Metadata_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 a contact array that must be previously sanitized.
*
* WARNING: This function will change its signature and no longer parse a 'name' element.
*
* @param string $type The type of contact. Deprecated.
* @param array $details The details about the contact.
*
* @todo Change the signature to remove $type.
* @todo Remove the capability to pass a name and parse it inside the method.
*/
public function addContact($type, $details)
{
assert('is_string($type)');
assert('is_array($details)');
assert('in_array($type, array("technical", "support", "administrative", "billing", "other"), TRUE)');
// TODO: remove this check as soon as getContact() is called always before calling this function
$details = \SimpleSAML\Utils\Config\Metadata::getContact($details);
$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 a 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 of 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'));
}
}
}