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<?php
declare(strict_types=1);
namespace SimpleSAML\Module\core\Auth\Process;
/**
* 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 AttributeAdd extends \SimpleSAML\Auth\ProcessingFilter
{
/**
* Flag which indicates wheter this filter should append new values or replace old values.
* @var bool
*/
private $replace = false;
/**
* Attributes which should be added/appended.
*
* Associative array of arrays.
* @var array
*/
private $attributes = [];
/**
* Initialize this filter.
*
* @param array &$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)) {
$values = [$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
* @return void
*/
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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