FingerprintLoader.php

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<?php
 
namespace SAML2\Certificate;
 
use SAML2\Configuration\CertificateProvider;
use SAML2\Exception\InvalidArgumentException;
 
class FingerprintLoader
{
    public static function loadFromConfiguration(CertificateProvider $configuration)
    {
        $loader = new self();
 
        return $loader->loadFingerprints($configuration);
    }
 
    public function loadFingerprints(CertificateProvider $configuration)
    {
        $fingerprints = $configuration->getCertificateFingerprints();
        if (!is_array($fingerprints) && !$fingerprints instanceof \Traversable) {
            throw InvalidArgumentException::invalidType(
                'array or instanceof \Traversable',
                $fingerprints
            );
        }
 
        $collection = new FingerprintCollection();
        foreach ($fingerprints as $fingerprint) {
            if (!is_string($fingerprint) && !(is_object($fingerprint) && method_exists($fingerprint, '__toString'))) {
                throw InvalidArgumentException::invalidType(
                    'fingerprint as string or object that can be casted to string',
                    $fingerprint
                );
            }
 
            $collection->add(new Fingerprint((string) $fingerprint));
        }
 
        return $collection;
    }
}