Gandung\JWT\Parser\Parser

Complexity

Total Complexity

14

Size/Duplication

Total Lines	96
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	parse()	0	19	4
A	getSignature()	0	12	3
A	getJoseHeader()	0	10	2
A	getPayload()	0	10	2
A	checkToken()	0	16	3

<?php

namespace Gandung\JWT\Parser;

use Gandung\JWT\Accessor\JoseHeaderAccessor;
use Gandung\JWT\Accessor\JoseHeaderAccessorInterface;
use Gandung\JWT\Accessor\PayloadAccessor;
use Gandung\JWT\Accessor\PayloadAccessorInterface;

/**
 * @author Paulus Gandung Prakosa <rvn.plvhx@gmail.com>
 */
class Parser implements ParserInterface
{
    /**
     * @var array
     */
    private $portion;

    /**
     * {@inheritdoc}
     */
    public function parse($token)
    {
        $this->checkToken($token);

        $key = ['jose', 'payload', 'signature'];

        foreach ($this->portion as $k => $v) {
            if ($k === 0 || $k === 1) {
                $this->portion[$k] = json_decode(
                    \Gandung\JWT\__jwt_base64UrlDecode($v),
                    JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE
                );
            } else {
                $this->portion[$k] = $v;
            }
        }

        $this->portion = array_combine($key, $this->portion);
    }

    /**
     * {@inheritdoc}
     */
    public function getSignature($raw = true)
    {
        if (!isset($this->portion['signature'])) {
            throw new \RuntimeException(
                "JWT portion doesn't have 'signature' index."
            );
        }

        return $raw === true
            ? \Gandung\JWT\__jwt_base64UrlDecode($this->portion['signature'])
            : $this->portion['signature'];
    }

    /**
     * {@inheritdoc}
     */
    public function getJoseHeader(): JoseHeaderAccessorInterface
    {
        if (!isset($this->portion['jose'])) {
            throw new \RuntimeException(
                "JWT portion doesn't have 'jose' index."
            );
        }

        return new JoseHeaderAccessor($this->portion['jose']);
    }

    /**
     * {@inheritdoc}
     */
    public function getPayload(): PayloadAccessorInterface
    {
        if (!isset($this->portion['payload'])) {
            throw new \RuntimeException(
                "JWT portion doesn't have 'payload' index."
            );
        }

        return new PayloadAccessor($this->portion['payload']);
    }

    /**
     * Check if given JWT token is valid.
     *
     * @param string $token
     */
    private function checkToken($token)
    {
        if (empty($token)) {
            throw new \InvalidArgumentException(
                "JWT token must not be empty."
            );
        }

        $this->portion = explode('.', $token);

        if (sizeof($this->portion) !== 3) {
            throw new \RuntimeException(
                "Invalid JWT token."
            );
        }
    }
}