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<?php
declare(strict_types=1);
namespace SimpleSAML\Utils;
use SimpleSAML\Configuration;
/**
* Utility class for SimpleSAMLphp configuration management and manipulation.
*
* @package SimpleSAMLphp
*/
class Config
{
/**
* Resolves a path that may be relative to the cert-directory.
*
* @param string $path The (possibly relative) path to the file.
*
* @return string The file path.
* @throws \InvalidArgumentException If $path is not a string.
*
* @author Olav Morken, UNINETT AS <olav.morken@uninett.no>
*/
public static function getCertPath($path)
{
if (!is_string($path)) {
throw new \InvalidArgumentException('Invalid input parameters.');
}
$globalConfig = Configuration::getInstance();
$base = $globalConfig->getPathValue('certdir', 'cert/');
return System::resolvePath($path, $base);
}
/**
* Retrieve the secret salt.
*
* This function retrieves the value which is configured as the secret salt. It will check that the value exists
* and is set to a non-default value. If it isn't, an exception will be thrown.
*
* The secret salt can be used as a component in hash functions, to make it difficult to test all possible values
* in order to retrieve the original value. It can also be used as a simple method for signing data, by hashing the
* data together with the salt.
*
* @return string The secret salt.
* @throws \InvalidArgumentException If the secret salt hasn't been configured.
*
* @author Olav Morken, UNINETT AS <olav.morken@uninett.no>
*/
public static function getSecretSalt()
{
$secretSalt = Configuration::getInstance()->getString('secretsalt');
if ($secretSalt === 'defaultsecretsalt') {
throw new \InvalidArgumentException('The "secretsalt" configuration option must be set to a secret value.');
}
return $secretSalt;
}
/**
* Returns the path to the config dir
*
* If the SIMPLESAMLPHP_CONFIG_DIR environment variable has been set, it takes precedence over the default
* $simplesamldir/config directory.
*
* @return string The path to the configuration directory.
*/
public static function getConfigDir()
{
$configDir = dirname(dirname(dirname(__DIR__))) . '/config';
/** @var string|false $configDirEnv */
$configDirEnv = getenv('SIMPLESAMLPHP_CONFIG_DIR');
if ($configDirEnv === false) {
$configDirEnv = getenv('REDIRECT_SIMPLESAMLPHP_CONFIG_DIR');
}
if ($configDirEnv !== false) {
if (!is_dir($configDirEnv)) {
throw new \InvalidArgumentException(
sprintf(
'Config directory specified by environment variable SIMPLESAMLPHP_CONFIG_DIR is not a ' .
'directory. Given: "%s"',
$configDirEnv
)
);
}
$configDir = $configDirEnv;
}
return $configDir;
}
}
|
