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|
<?php
namespace SimpleSAML\Module\core\Auth\Process;
/**
* Filter to create target attribute based on value(s) in source attribute
*
* @author Martin van Es, m7
* @package SimpleSAMLphp
*/
class AttributeValueMap extends \SimpleSAML_Auth_ProcessingFilter
{
/**
* The name of the attribute we should assign values to (ie: the target attribute).
*/
private $targetattribute;
/**
* The name of the attribute we should create values from.
*/
private $sourceattribute;
/**
* The required $sourceattribute values and target affiliations.
*/
private $values = array();
/**
* Whether $sourceattribute should be kept or not.
*/
private $keep = false;
/**
* Whether $target attribute values should be replaced by new values or not.
*/
private $replace = false;
/**
* Initialize the filter.
*
* @param array $config Configuration information about this filter.
* @param mixed $reserved For future use.
* @throws \SimpleSAML_Error_Exception If the configuration is not valid.
*/
public function __construct($config, $reserved)
{
parent::__construct($config, $reserved);
assert(is_array($config));
// parse configuration
foreach ($config as $name => $value) {
if (is_int($name)) {
// check if this is an option
if ($value === '%replace') {
$this->replace = true;
} elseif ($value === '%keep') {
$this->keep = true;
} else {
// unknown configuration option, log it and ignore the error
\SimpleSAML\Logger::warning(
"AttributeValueMap: unknown configuration flag '".var_export($value, true)."'"
);
}
continue;
}
// set the target attribute
if ($name === 'targetattribute') {
$this->targetattribute = $value;
}
// set the source attribute
if ($name === 'sourceattribute') {
$this->sourceattribute = $value;
}
// set the values
if ($name === 'values') {
$this->values = $value;
}
}
// now validate it
if (!is_string($this->sourceattribute)) {
throw new \SimpleSAML_Error_Exception("AttributeValueMap: 'sourceattribute' configuration option not set.");
}
if (!is_string($this->targetattribute)) {
throw new \SimpleSAML_Error_Exception("AttributeValueMap: 'targetattribute' configuration option not set.");
}
if (!is_array($this->values)) {
throw new \SimpleSAML_Error_Exception("AttributeValueMap: 'values' configuration option is not an array.");
}
}
/**
* Apply filter.
*
* @param array &$request The current request
*/
public function process(&$request)
{
\SimpleSAML\Logger::debug('Processing the AttributeValueMap filter.');
assert(is_array($request));
assert(array_key_exists('Attributes', $request));
$attributes =& $request['Attributes'];
if (!array_key_exists($this->sourceattribute, $attributes)) {
// the source attribute does not exist, nothing to do here
return;
}
$sourceattribute = $attributes[$this->sourceattribute];
$targetvalues = array();
if (is_array($sourceattribute)) {
foreach ($this->values as $value => $values) {
if (!is_array($values)) {
$values = array($values);
}
if (count(array_intersect($values, $sourceattribute)) > 0) {
\SimpleSAML\Logger::debug("AttributeValueMap: intersect match for '$value'");
$targetvalues[] = $value;
}
}
}
if (count($targetvalues) > 0) {
if ($this->replace || !array_key_exists($this->targetattribute, $attributes)) {
$attributes[$this->targetattribute] = $targetvalues;
} else {
$attributes[$this->targetattribute] = array_unique(array_merge(
$attributes[$this->targetattribute],
$targetvalues
));
}
}
if (!$this->keep) {
// no need to keep the source attribute
unset($attributes[$this->sourceattribute]);
}
}
}
|
