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<?php
/*
* This file is part of the PHPASN1 library.
*
* Copyright © Friedrich Große <friedrich.grosse@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FG\ASN1;
use Exception;
use FG\ASN1\Exception\ParserException;
use FG\ASN1\Universal\Sequence;
class TemplateParser
{
/**
* @param string $data
* @param array $template
* @return \FG\ASN1\ASNObject|Sequence
* @throws ParserException if there was an issue parsing
*/
public function parseBase64($data, array $template)
{
// TODO test with invalid data
return $this->parseBinary(base64_decode($data), $template);
}
/**
* @param string $binary
* @param array $template
* @return \FG\ASN1\ASNObject|Sequence
* @throws ParserException if there was an issue parsing
*/
public function parseBinary($binary, array $template)
{
$parsedObject = ASNObject::fromBinary($binary);
foreach ($template as $key => $value) {
$this->validate($parsedObject, $key, $value);
}
return $parsedObject;
}
private function validate(ASNObject $object, $key, $value)
{
if (is_array($value)) {
$this->assertTypeId($key, $object);
/* @var Construct $object */
foreach ($value as $key => $child) {
$this->validate($object->current(), $key, $child);
$object->next();
}
} else {
$this->assertTypeId($value, $object);
}
}
private function assertTypeId($expectedTypeId, ASNObject $object)
{
$actualType = $object->getType();
if ($expectedTypeId != $actualType) {
throw new Exception("Expected type ($expectedTypeId) does not match actual type ($actualType");
}
}
}
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