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<?php
declare(strict_types=1);
namespace SimpleSAML\Module\saml;
use SAML2\Constants;
use Throwable;
/**
* Class for representing a SAML 2 error.
*
* @package SimpleSAMLphp
*/
class Error extends \SimpleSAML\Error\Exception
{
/**
* The top-level status code.
*
* @var string
*/
private $status;
/**
* The second-level status code, or NULL if no second-level status code is defined.
*
* @var string|null
*/
private $subStatus;
/**
* The status message, or NULL if no status message is defined.
*
* @var string|null
*/
private $statusMessage;
/**
* Create a SAML 2 error.
*
* @param string $status The top-level status code.
* @param string|null $subStatus The second-level status code.
* Can be NULL, in which case there is no second-level status code.
* @param string|null $statusMessage The status message.
* Can be NULL, in which case there is no status message.
* @param \Throwable|null $cause The cause of this exception. Can be NULL.
*/
public function __construct(
string $status,
string $subStatus = null,
string $statusMessage = null,
Throwable $cause = null
) {
$st = self::shortStatus($status);
if ($subStatus !== null) {
$st .= '/' . self::shortStatus($subStatus);
}
if ($statusMessage !== null) {
$st .= ': ' . $statusMessage;
}
parent::__construct($st, 0, $cause);
$this->status = $status;
$this->subStatus = $subStatus;
$this->statusMessage = $statusMessage;
}
/**
* Get the top-level status code.
*
* @return string The top-level status code.
*/
public function getStatus()
{
return $this->status;
}
/**
* Get the second-level status code.
*
* @return string|null The second-level status code or NULL if no second-level status code is present.
*/
public function getSubStatus()
{
return $this->subStatus;
}
/**
* Get the status message.
*
* @return string|null The status message or NULL if no status message is present.
*/
public function getStatusMessage()
{
return $this->statusMessage;
}
/**
* Create a SAML2 error from an exception.
*
* This function attempts to create a SAML2 error with the appropriate
* status codes from an arbitrary exception.
*
* @param \Throwable $exception The original exception.
* @return \SimpleSAML\Error\Exception The new exception.
*/
public static function fromException(Throwable $exception): \SimpleSAML\Error\Exception
{
if ($exception instanceof \SimpleSAML\Module\saml\Error) {
// Return the original exception unchanged
return $exception;
// TODO: remove this branch in 2.0
} elseif ($exception instanceof \SimpleSAML\Error\NoPassive) {
$e = new self(
Constants::STATUS_RESPONDER,
Constants::STATUS_NO_PASSIVE,
$exception->getMessage(),
$exception
);
// TODO: remove this branch in 2.0
} elseif ($exception instanceof \SimpleSAML\Error\ProxyCountExceeded) {
$e = new self(
Constants::STATUS_RESPONDER,
Constants::STATUS_PROXY_COUNT_EXCEEDED,
$exception->getMessage(),
$exception
);
} else {
$e = new self(
\SAML2\Constants::STATUS_RESPONDER,
null,
get_class($exception) . ': ' . $exception->getMessage(),
$exception
);
}
return $e;
}
/**
* Create a normal exception from a SAML2 error.
*
* This function attempts to reverse the operation of the fromException() function.
* If it is unable to create a more specific exception, it will return the current
* object.
*
* @see \SimpleSAML\Module\saml\Error::fromException()
*
* @return \SimpleSAML\Error\Exception An exception representing this error.
*/
public function toException()
{
$e = null;
switch ($this->status) {
case Constants::STATUS_RESPONDER:
switch ($this->subStatus) {
case Constants::STATUS_NO_PASSIVE:
$e = new \SimpleSAML\Module\saml\Error\NoPassive(
Constants::STATUS_RESPONDER,
$this->statusMessage
);
break;
}
break;
}
if ($e === null) {
return $this;
}
return $e;
}
/**
* Create a short version of the status code.
*
* Remove the 'urn:oasis:names:tc:SAML:2.0:status:'-prefix of status codes
* if it is present.
*
* @param string $status The status code.
* @return string A shorter version of the status code.
*/
private static function shortStatus(string $status): string
{
$t = 'urn:oasis:names:tc:SAML:2.0:status:';
if (substr($status, 0, strlen($t)) === $t) {
return substr($status, strlen($t));
}
return $status;
}
}
|
