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<?php
/**
* Filter to add attributes.
*
* This filter allows you to add attributes to the attribute set being processed.
*
* @author Olav Morken, UNINETT AS.
* @package SimpleSAMLphp
*/
class sspmod_core_Auth_Process_AttributeAdd extends SimpleSAML_Auth_ProcessingFilter {
/**
* Flag which indicates wheter this filter should append new values or replace old values.
*/
private $replace = FALSE;
/**
* Attributes which should be added/appended.
*
* Assiciative array of arrays.
*/
private $attributes = array();
/**
* 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));
foreach($config as $name => $values) {
if(is_int($name)) {
if($values === '%replace') {
$this->replace = TRUE;
} else {
throw new Exception('Unknown flag: ' . var_export($values, TRUE));
}
continue;
}
if(!is_array($values)) {
$values = array($values);
}
foreach($values as $value) {
if(!is_string($value)) {
throw new Exception('Invalid value for attribute ' . $name . ': ' .
var_export($values, TRUE));
}
}
$this->attributes[$name] = $values;
}
}
/**
* Apply filter to add or replace attributes.
*
* Add or replace existing attributes with the configured values.
*
* @param array &$request The current request
*/
public function process(&$request) {
assert(is_array($request));
assert(array_key_exists('Attributes', $request));
$attributes =& $request['Attributes'];
foreach($this->attributes as $name => $values) {
if($this->replace === TRUE || !array_key_exists($name, $attributes)) {
$attributes[$name] = $values;
} else {
$attributes[$name] = array_merge($attributes[$name], $values);
}
}
}
}
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