X509\Certificate\Extension\CertificatePoliciesExtension

Complexity

Total Complexity

14

Size/Duplication

Total Lines	134
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

100%

Importance

Changes

0

9 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	2
A	_fromDER()	0	13	2
A	has()	0	4	1
A	get()	0	7	2
A	hasAnyPolicy()	0	4	1
A	anyPolicy()	0	7	2
A	_valueASN1()	0	11	2
A	count()	0	4	1
A	getIterator()	0	4	1

<?php

declare(strict_types = 1);

namespace X509\Certificate\Extension;

use ASN1\Type\UnspecifiedType;
use ASN1\Type\Constructed\Sequence;
use X509\Certificate\Extension\CertificatePolicy\PolicyInformation;

/**
 * Implements 'Certificate Policies' certificate extension.
 *
 * @link https://tools.ietf.org/html/rfc5280#section-4.2.1.4
 */
class CertificatePoliciesExtension extends Extension implements 
    \Countable,
    \IteratorAggregate
{
    /**
     * Policy information terms.
     *
     * @var PolicyInformation[] $_policies
     */
    protected $_policies;
    
    /**
     * Constructor.
     *
     * @param bool $critical
     * @param PolicyInformation ...$policies
     */
    public function __construct(bool $critical, PolicyInformation ...$policies)
    {
        parent::__construct(Extension::OID_CERTIFICATE_POLICIES, $critical);
        $this->_policies = [];
        foreach ($policies as $policy) {
            $this->_policies[$policy->oid()] = $policy;
        }
    }
    
    /**
     *
     * {@inheritdoc}
     * @return self
     */
    protected static function _fromDER(string $data, bool $critical): self
    {
        $policies = array_map(
            function (UnspecifiedType $el) {
                return PolicyInformation::fromASN1($el->asSequence());
            }, UnspecifiedType::fromDER($data)->asSequence()->elements());
        if (!count($policies)) {
            throw new \UnexpectedValueException(
                "certificatePolicies must contain" .
                     " at least one PolicyInformation.");
        }
        return new self($critical, ...$policies);
    }
    
    /**
     * Check whether policy information by OID is present.
     *
     * @param string $oid
     * @return bool
     */
    public function has(string $oid): bool
    {
        return isset($this->_policies[$oid]);
    }
    
    /**
     * Get policy information by OID.
     *
     * @param string $oid
     * @throws \LogicException
     * @return PolicyInformation
     */
    public function get(string $oid): PolicyInformation
    {
        if (!$this->has($oid)) {
            throw new \LogicException("Not certificate policy by OID $oid.");
        }
        return $this->_policies[$oid];
    }
    
    /**
     * Check whether anyPolicy is present.
     *
     * @return bool
     */
    public function hasAnyPolicy(): bool
    {
        return $this->has(PolicyInformation::OID_ANY_POLICY);
    }
    
    /**
     * Get anyPolicy information.
     *
     * @throws \LogicException If anyPolicy is not present.
     * @return PolicyInformation
     */
    public function anyPolicy(): PolicyInformation
    {
        if (!$this->hasAnyPolicy()) {
            throw new \LogicException("No anyPolicy.");
        }
        return $this->get(PolicyInformation::OID_ANY_POLICY);
    }
    
    /**
     *
     * {@inheritdoc}
     * @return Sequence
     */
    protected function _valueASN1(): Sequence
    {
        if (!count($this->_policies)) {
            throw new \LogicException("No policies.");
        }
        $elements = array_map(
            function (PolicyInformation $pi) {
                return $pi->toASN1();
            }, array_values($this->_policies));
        return new Sequence(...$elements);
    }
    
    /**
     * Get the number of policies.
     *
     * @see \Countable::count()
     * @return int
     */
    public function count(): int
    {
        return count($this->_policies);
    }
    
    /**
     * Get iterator for policy information terms.
     *
     * @see \IteratorAggregate::getIterator()
     * @return \ArrayIterator
     */
    public function getIterator(): \ArrayIterator
    {
        return new \ArrayIterator($this->_policies);
    }
}