SAML2: Metadata XML classes.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2261 44740490-163a-0410-bde0-09ae8108e29a

1 files changed, 97 insertions, 0 deletions

diff --git a/lib/SAML2/XML/md/KeyDescriptor.php b/lib/SAML2/XML/md/KeyDescriptor.php
new file mode 100644
index 0000000..aeaffe9
--- /dev/null
+++ b/lib/SAML2/XML/md/KeyDescriptor.php
@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * Class representing a KeyDescriptor element.
+ *
+ * @package simpleSAMLphp
+ * @version $Id$
+ */
+class SAML2_XML_md_KeyDescriptor {
+
+	/**
+	 * What this key can be used for.
+	 *
+	 * 'encryption', 'signing' or NULL.
+	 *
+	 * @var string|NULL
+	 */
+	public $use;
+
+
+	/**
+	 * The KeyInfo for this key.
+	 *
+	 * @var SAML2_XML_ds_KeyInfo
+	 */
+	public $KeyInfo;
+
+
+	/**
+	 * Supported EncryptionMethods.
+	 *
+	 * Array of SAML2_XML_Chunk objects.
+	 *
+	 * @var array
+	 */
+	public $EncryptionMethod = array();
+
+
+	/**
+	 * Initialize an KeyDescriptor.
+	 *
+	 * @param DOMElement|NULL $xml  The XML element we should load.
+	 */
+	public function __construct(DOMElement $xml = NULL) {
+
+		if ($xml === NULL) {
+			return;
+		}
+
+		if ($xml->hasAttribute('use')) {
+			$this->use = $xml->getAttribute('use');
+		}
+
+		$keyInfo = SAML2_Utils::xpQuery($xml, './ds:KeyInfo');
+		if (count($keyInfo) > 1) {
+			throw new Exception('More than one ds:KeyInfo in the KeyDescriptor.');
+		} elseif (empty($keyInfo)) {
+			throw new Exception('No ds:KeyInfo in the KeyDescriptor.');
+		}
+		$this->KeyInfo = new SAML2_XML_ds_KeyInfo($keyInfo[0]);
+
+		foreach (SAML2_Utils::xpQuery($xml, './saml_metadata:EncryptionMethod') as $em) {
+			$this->EncryptionMethod[] = new SAML2_XML_Chunk($em);
+		}
+
+	}
+
+
+	/**
+	 * Convert this KeyDescriptor to XML.
+	 *
+	 * @param DOMElement $parent  The element we should append this KeyDescriptor to.
+	 */
+	public function toXML(DOMElement $parent) {
+		assert('is_null($this->use) || is_string($this->use)');
+		assert('$this->KeyInfo instanceof SAML2_XML_ds_KeyInfo');
+		assert('is_array($this->EncryptionMethod)');
+
+		$doc = $parent->ownerDocument;
+
+		$e = $doc->createElementNS(SAML2_Const::NS_MD, 'md:KeyDescriptor');
+		$parent->appendChild($e);
+
+		if (isset($this->use)) {
+			$e->setAttribute('use', $this->use);
+		}
+
+		$this->KeyInfo->toXML($e);
+
+		foreach ($this->EncryptionMethod as $em) {
+			$em->toXML($e);
+		}
+
+		return $e;
+	}
+
+}