Moving STAT Logging to a separate authproc filter

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1310 44740490-163a-0410-bde0-09ae8108e29a

config-templates/config.php

@@ -243,6 +243,11 @@ $config = array (
 		/* Add a realm attribute from edupersonprincipalname
 		40 => 'core:AttributeRealm',
 		 */
+		45 => array(
+			'class' => 'core:StatisticsWithAttribute',
+			'attributename' => 'realm',
+			'type' => 'saml20-idp-SSO',
+		),
 
 		/* When called without parameters, it will fallback to filter attributes ‹the old way›
 		 * by checking the 'attributes' parameter in metadata on IdP hosted and SP remote.

modules/core/lib/Auth/Process/StatisticsWithAttribute.php

+<?php
+
+/**
+ * Log a line in the STAT log with one attribute.
+ *
+ * @author Andreas Åkre Solberg, UNINETT AS.
+ * @package simpleSAMLphp
+ * @version $Id$
+ */
+class sspmod_core_Auth_Process_StatisticsWithAttribute extends SimpleSAML_Auth_ProcessingFilter {
+
+
+	/**
+	 * The attribute to log
+	 */
+	private $attribute = NULL;
+	
+	private $typeTag = 'saml20-idp-SSO';
+
+
+	/**
+	 * Initialize this filter.
+	 *
+	 * @param array $config  Configuration information about this filter.
+	 * @param mixed $reserved  For future use.
+	 */
+	public function __construct($config, $reserved) {
+		parent::__construct($config, $reserved);
+
+		assert('is_array($config)');
+
+		if (array_key_exists('attributename', $config)) {
+			$this->attribute = $config['attributename'];
+			if (!is_string($this->attribute)) {
+				throw new Exception('Invalid attribute name given to core:StatisticsWithAttribute filter.');
+			}
+		}
+		
+		if (array_key_exists('type', $config)) {
+			$this->typeTag = $config['type'];
+			if (!is_string($this->attribute)) {
+				throw new Exception('Invalid typeTag given to core:StatisticsWithAttribute filter.');
+			}
+		}
+	}
+
+
+	/**
+	 * Log line.
+	 *
+	 * @param array &$state  The current state.
+	 */
+	public function process(&$state) {
+		assert('is_array($state)');
+		assert('array_key_exists("Attributes", $state)');
+
+		$logAttribute = 'NA';
+		$source = 'NA';
+		$dest = 'NA';
+
+		if (array_key_exists($this->attribute, $state['Attributes'])) $logAttribute = $state['Attributes'][$this->attribute][0];		
+		if (array_key_exists('Source', $state)) $source = $state['Source']['entityid'];
+		if (array_key_exists('Destination', $state)) $dest = $state['Destination']['entityid'];
+
+		
+		SimpleSAML_Logger::stats($this->typeTag . ' ' . $dest . ' ' . $source . ' ' . $logAttribute);
+		
+	}
+
+}