Make it possible to set a default value for IsPassive in SP-hosted metadata.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@554 44740490-163a-0410-bde0-09ae8108e29a

docs/source/simplesamlphp-sp.xml

@@ -247,6 +247,15 @@
               set, the SP receives all attributes available at the IdP.</para>
             </glossdef>
           </glossentry>
+
+          <glossentry>
+            <glossterm>IsPassive</glossterm>
+
+            <glossdef>
+              <para>IsPassive allows you to enable passive authentication by
+              default for this SP.</para>
+            </glossdef>
+          </glossentry>
         </glosslist>
       </section>
 

lib/SimpleSAML/XML/SAML20/AuthnRequest.php

@@ -20,7 +20,7 @@ class SimpleSAML_XML_SAML20_AuthnRequest {
 	private $message = null;
 	private $dom;
 	private $relayState = null;
-	private $isPassive = 'false';
+	private $isPassive = null;
 	
 	
 	const PROTOCOL = 'saml2';
@@ -234,6 +234,25 @@ class SimpleSAML_XML_SAML20_AuthnRequest {
 	</samlp:RequestedAuthnContext>';
 		}
 
+
+		/* Check the metadata for isPassive if $this->isPassive === NULL. */
+		if($this->isPassive === NULL) {
+			/*
+			 * Process the SAML 2.0 SP hosted metadata parameter: IsPassive
+			 */
+			if (isset($md['IsPassive'])) {
+				if (is_bool($md['IsPassive'])) {
+					$this->isPassive = ($md['IsPassive'] ? 'true' : 'false');
+				} else {
+					throw new Exception('Illegal format of the IsPassive parameter in' .
+						' the SAML 2.0 SP hosted metadata for entity [' . $spentityid .
+						']. This value should be set to a PHP boolean value.');
+				}
+			} else {
+				/* The default is off. */
+				$this->isPassive = 'false';
+			}
+		}
 		
 
 		/*