JWKFactory::createKey() - Code Metrics - Inspection of "PublicJWKSet and JWKSets added" - Spomky-Labs/jose - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Pull Request — master (#130)

by Florent

created 2016-09-23 11:37 UTC

JWKFactory::createKey() A

↳ Parent: JWKFactory

Complexity

Conditions	1
Paths	1

Size

Total Lines	10
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	10
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	7
nc	1
nop	1

<?php

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2016 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Factory;

use Assert\Assertion;
use Base64Url\Base64Url;
use Jose\KeyConverter\KeyConverter;
use Jose\KeyConverter\RSAKey;
use Jose\Object\JWK;
use Jose\Object\JWKSet;
use Jose\Object\JWKSetInterface;
use Jose\Object\JWKSets;
use Jose\Object\PublicJWKSet;
use Jose\Object\RotatableJWK;
use Jose\Object\RotatableJWKSet;
use Jose\Object\StorableJWK;
use Jose\Object\StorableJWKSet;
use Mdanter\Ecc\Curves\CurveFactory;
use Mdanter\Ecc\Curves\NistCurve;
use Mdanter\Ecc\EccFactory;
use Psr\Cache\CacheItemPoolInterface;

final class JWKFactory implements JWKFactoryInterface
{
    /**
     * {@inheritdoc}
     */
    public static function createPublicKeySet(JWKSetInterface $jwkset)
    {
        return new PublicJWKSet($jwkset);
    }

    /**
     * {@inheritdoc}
     */
    public static function createKeySets(array $jwksets)
    {
        return new JWKSets($jwksets);
    }

    /**
     * {@inheritdoc}
     */
    public static function createStorableKey($filename, array $parameters)
    {
        return new StorableJWK($filename, $parameters);
    }

    /**
     * {@inheritdoc}
     */
    public static function createRotatableKey($filename, array $parameters, $ttl)
    {
        return new RotatableJWK($filename, $parameters, $ttl);
    }

    /**
     * {@inheritdoc}
     */
    public static function createRotatableKeySet($filename, array $parameters, $nb_keys, $ttl)
    {
        return new RotatableJWKSet($filename, $parameters, $nb_keys, $ttl);
    }

    /**
     * {@inheritdoc}
     */
    public static function createStorableKeySet($filename, array $parameters, $nb_keys)
    {
        return new StorableJWKSet($filename, $parameters, $nb_keys);
    }

    /**
     * {@inheritdoc}
     */
    public static function createKey(array $config)
    {
        Assertion::keyExists($config, 'kty', 'The key "kty" must be set');
        $supported_types = ['RSA' => 'RSA', 'OKP' => 'OKP', 'EC' => 'EC', 'oct' => 'Oct', 'none' => 'None'];
        $kty = $config['kty'];
        Assertion::keyExists($supported_types, $kty, sprintf('The key type "%s" is not supported. Please use one of %s', $kty, json_encode(array_keys($supported_types))));
        $method = sprintf('create%sKey', $supported_types[$kty]);

        return self::$method($config);
    }

    /**
     * {@inheritdoc}
     */
    public static function createRSAKey(array $values)
    {
        Assertion::keyExists($values, 'size', 'The key size is not set.');
        $size = $values['size'];
        unset($values['size']);

        Assertion::true(0 === $size % 8, 'Invalid key size.');
        Assertion::greaterOrEqualThan($size, 384, 'Key length is too short. It needs to be at least 384 bits.');

        $key = openssl_pkey_new([
            'private_key_bits' => $size,
            'private_key_type' => OPENSSL_KEYTYPE_RSA,
        ]);
        openssl_pkey_export($key, $out);
        $rsa = new RSAKey($out);
        $values = array_merge(
            $values,
            $rsa->toArray()
        );

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createECKey(array $values)
    {
        Assertion::keyExists($values, 'crv', 'The curve is not set.');
        $curve = $values['crv'];
        $curve_name = self::getNistName($curve);
        $generator = CurveFactory::getGeneratorByName($curve_name);
        $private_key = $generator->createPrivateKey();

        $values = array_merge(
            $values,
            [
                'kty' => 'EC',
                'crv' => $curve,
                'x'   => self::encodeValue($private_key->getPublicKey()->getPoint()->getX()),
                'y'   => self::encodeValue($private_key->getPublicKey()->getPoint()->getY()),
                'd'   => self::encodeValue($private_key->getSecret()),
            ]
        );

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createOctKey(array $values)
    {
        Assertion::keyExists($values, 'size', 'The key size is not set.');
        $size = $values['size'];
        unset($values['size']);
        Assertion::true(0 === $size % 8, 'Invalid key size.');
        $values = array_merge(
            $values,
            [
                'kty' => 'oct',
                'k'   => Base64Url::encode(random_bytes($size / 8)),
            ]
        );

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createOKPKey(array $values)
    {
        Assertion::keyExists($values, 'crv', 'The curve is not set.');
        $curve = $values['crv'];
        switch ($curve) {
            case 'X25519':
                Assertion::true(function_exists('curve25519_public'), sprintf('Unsupported "%s" curve', $curve));
                $d = random_bytes(32);
                $x = curve25519_public($d);
                break;
            case 'Ed25519':
                Assertion::true(function_exists('ed25519_publickey'), sprintf('Unsupported "%s" curve', $curve));
                $d = random_bytes(32);
                $x = ed25519_publickey($d);
                break;
            default:
                throw new \InvalidArgumentException(sprintf('Unsupported "%s" curve', $curve));
        }

        $values = array_merge(
            $values,
            [
                'kty' => 'OKP',
                'crv' => $curve,
                'x'   => Base64Url::encode($x),
                'd'   => Base64Url::encode($d),
            ]
        );

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createNoneKey(array $values)
    {
        $values = array_merge(
            $values,
            [
                'kty' => 'none',
                'alg' => 'none',
                'use' => 'sig',
            ]
        );

        return new JWK($values);
    }

    /**
     * @param string $value
     *
     * @return string
     */
    private static function encodeValue($value)
    {
        $value = gmp_strval($value);

        return Base64Url::encode(self::convertDecToBin($value));
    }

    /**
     * @param string $value
     *
     * @return string
     */
    private static function convertDecToBin($value)
    {
        $adapter = EccFactory::getAdapter();

        return hex2bin($adapter->decHex($value));
    }

    /**
     * @param string $curve
     *
     * @throws \InvalidArgumentException
     *
     * @return string
     */
    private static function getNistName($curve)
    {
        switch ($curve) {
            case 'P-256':
                return NistCurve::NAME_P256;
            case 'P-384':
                return NistCurve::NAME_P384;
            case 'P-521':
                return NistCurve::NAME_P521;
            default:
                throw new \InvalidArgumentException(sprintf('The curve "%s" is not supported.', $curve));
        }
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromValues(array $values)
    {
        if (array_key_exists('keys', $values) && is_array($values['keys'])) {
            return new JWKSet($values);
        }

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromCertificateFile($file, array $additional_values = [])
    {
        $values = KeyConverter::loadKeyFromCertificateFile($file);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromCertificate($certificate, array $additional_values = [])
    {
        $values = KeyConverter::loadKeyFromCertificate($certificate);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromX509Resource($res, array $additional_values = [])
    {
        $values = KeyConverter::loadKeyFromX509Resource($res);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromKeyFile($file, $password = null, array $additional_values = [])
    {
        $values = KeyConverter::loadFromKeyFile($file, $password);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromKey($key, $password = null, array $additional_values = [])
    {
        $values = KeyConverter::loadFromKey($key, $password);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromJKU($jku, $allow_unsecured_connection = false, CacheItemPoolInterface $cache = null, $ttl = 300)
    {
        $content = self::getContent($jku, $allow_unsecured_connection, $cache, $ttl);

        Assertion::keyExists($content, 'keys', 'Invalid content.');

        return new JWKSet($content);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromX5U($x5u, $allow_unsecured_connection = false, CacheItemPoolInterface $cache = null, $ttl = 300)
    {
        $content = self::getContent($x5u, $allow_unsecured_connection, $cache, $ttl);

        $jwkset = new JWKSet();
        foreach ($content as $kid => $cert) {
            $jwk = KeyConverter::loadKeyFromCertificate($cert);
            Assertion::notEmpty($jwk, 'Invalid content.');
            if (is_string($kid)) {
                $jwk['kid'] = $kid;
            }
            $jwkset->addKey(new JWK($jwk));
        }

        return $jwkset;
    }

    /**
     * @param string                                 $url
     * @param bool                                   $allow_unsecured_connection
     * @param \Psr\Cache\CacheItemPoolInterface|null $cache
     * @param int                                    $ttl
     *
     * @return array
     */
    private static function getContent($url, $allow_unsecured_connection, CacheItemPoolInterface $cache = null, $ttl = 300)
    {
        $cache_key = sprintf('JWKFactory-Content-%s', hash('sha512', $url));
        if (null !== $cache) {
            $item = $cache->getItem($cache_key);
            if (!$item->isHit()) {
                $content = self::downloadContent($url, $allow_unsecured_connection);
                $item->set($content);
                $item->expiresAfter($ttl);
                $cache->save($item);

                return $content;
            } else {
                return $item->get();
            }
        }

        return self::downloadContent($url, $allow_unsecured_connection);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromX5C(array $x5c, array $additional_values = [])
    {
        $values = KeyConverter::loadFromX5C($x5c);
        $values = array_merge($values, $additional_values);

        return new JWK($values);
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromKeySet(JWKSetInterface $jwk_set, $key_index)
    {
        Assertion::integer($key_index);

        return $jwk_set->getKey($key_index);
    }

    /**
     * @param string $url
     * @param bool   $allow_unsecured_connection
     *
     * @throws \InvalidArgumentException
     *
     * @return array
     */
    private static function downloadContent($url, $allow_unsecured_connection)
    {
        // The URL must be a valid URL and scheme must be https
        Assertion::false(
            false === filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED | FILTER_FLAG_HOST_REQUIRED),
            'Invalid URL.'
        );
        Assertion::false(
            false === $allow_unsecured_connection && 'https://' !== mb_substr($url, 0, 8, '8bit'),
            'Unsecured connection.'
        );

        $params = [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_URL            => $url,
        ];
        if (false === $allow_unsecured_connection) {
            $params[CURLOPT_SSL_VERIFYPEER] = true;
            $params[CURLOPT_SSL_VERIFYHOST] = 2;
        }

        $ch = curl_init();
        curl_setopt_array($ch, $params);
        $content = curl_exec($ch);
        $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
        Assertion::eq(1, preg_match('/^application\/json([\s|;].*)?$/', $content_type), sprintf('Content type is not "application/json". It is "%s".', $content_type));
        curl_close($ch);

        Assertion::notEmpty($content, 'Unable to get content.');
        $content = json_decode($content, true);
        Assertion::isArray($content, 'Invalid content.');

        return $content;
    }
}


1			<?php
2
3			/*
4			* The MIT License (MIT)
5			*
6			* Copyright (c) 2014-2016 Spomky-Labs
7			*
8			* This software may be modified and distributed under the terms
9			* of the MIT license. See the LICENSE file for details.
10			*/
11
12			namespace Jose\Factory;
13
14			use Assert\Assertion;
15			use Base64Url\Base64Url;
16			use Jose\KeyConverter\KeyConverter;
17			use Jose\KeyConverter\RSAKey;
18			use Jose\Object\JWK;
19			use Jose\Object\JWKSet;
20			use Jose\Object\JWKSetInterface;
21			use Jose\Object\JWKSets;
22			use Jose\Object\PublicJWKSet;
23			use Jose\Object\RotatableJWK;
24			use Jose\Object\RotatableJWKSet;
25			use Jose\Object\StorableJWK;
26			use Jose\Object\StorableJWKSet;
27			use Mdanter\Ecc\Curves\CurveFactory;
28			use Mdanter\Ecc\Curves\NistCurve;
29			use Mdanter\Ecc\EccFactory;
30			use Psr\Cache\CacheItemPoolInterface;
31
32			final class JWKFactory implements JWKFactoryInterface
33			{
34			/**
35			* {@inheritdoc}
36			*/
37			public static function createPublicKeySet(JWKSetInterface $jwkset)
38			{
39			return new PublicJWKSet($jwkset);
40			}
41
42			/**
43			* {@inheritdoc}
44			*/
45			public static function createKeySets(array $jwksets)
46			{
47			return new JWKSets($jwksets);
48			}
49
50			/**
51			* {@inheritdoc}
52			*/
53			public static function createStorableKey($filename, array $parameters)
54			{
55			return new StorableJWK($filename, $parameters);
56			}
57
58			/**
59			* {@inheritdoc}
60			*/
61			public static function createRotatableKey($filename, array $parameters, $ttl)
62			{
63			return new RotatableJWK($filename, $parameters, $ttl);
64			}
65
66			/**
67			* {@inheritdoc}
68			*/
69			public static function createRotatableKeySet($filename, array $parameters, $nb_keys, $ttl)
70			{
71			return new RotatableJWKSet($filename, $parameters, $nb_keys, $ttl);
72			}
73
74			/**
75			* {@inheritdoc}
76			*/
77			public static function createStorableKeySet($filename, array $parameters, $nb_keys)
78			{
79			return new StorableJWKSet($filename, $parameters, $nb_keys);
80			}
81
82			/**
83			* {@inheritdoc}
84			*/
85			public static function createKey(array $config)
86			{
87			Assertion::keyExists($config, 'kty', 'The key "kty" must be set');
88			$supported_types = ['RSA' => 'RSA', 'OKP' => 'OKP', 'EC' => 'EC', 'oct' => 'Oct', 'none' => 'None'];
89			$kty = $config['kty'];
90			Assertion::keyExists($supported_types, $kty, sprintf('The key type "%s" is not supported. Please use one of %s', $kty, json_encode(array_keys($supported_types))));
91			$method = sprintf('create%sKey', $supported_types[$kty]);
92
93			return self::$method($config);
94			}
95
96			/**
97			* {@inheritdoc}
98			*/
99			public static function createRSAKey(array $values)
100			{
101			Assertion::keyExists($values, 'size', 'The key size is not set.');
102			$size = $values['size'];
103			unset($values['size']);
104
105			Assertion::true(0 === $size % 8, 'Invalid key size.');
106			Assertion::greaterOrEqualThan($size, 384, 'Key length is too short. It needs to be at least 384 bits.');
107
108			$key = openssl_pkey_new([
109			'private_key_bits' => $size,
110			'private_key_type' => OPENSSL_KEYTYPE_RSA,
111			]);
112			openssl_pkey_export($key, $out);
113			$rsa = new RSAKey($out);
114			$values = array_merge(
115			$values,
116			$rsa->toArray()
117			);
118
119			return new JWK($values);
120			}
121
122			/**
123			* {@inheritdoc}
124			*/
125			public static function createECKey(array $values)
126			{
127			Assertion::keyExists($values, 'crv', 'The curve is not set.');
128			$curve = $values['crv'];
129			$curve_name = self::getNistName($curve);
130			$generator = CurveFactory::getGeneratorByName($curve_name);
131			$private_key = $generator->createPrivateKey();
132
133			$values = array_merge(
134			$values,
135			[
136			'kty' => 'EC',
137			'crv' => $curve,
138			'x' => self::encodeValue($private_key->getPublicKey()->getPoint()->getX()),
139			'y' => self::encodeValue($private_key->getPublicKey()->getPoint()->getY()),
140			'd' => self::encodeValue($private_key->getSecret()),
141			]
142			);
143
144			return new JWK($values);
145			}
146
147			/**
148			* {@inheritdoc}
149			*/
150			public static function createOctKey(array $values)
151			{
152			Assertion::keyExists($values, 'size', 'The key size is not set.');
153			$size = $values['size'];
154			unset($values['size']);
155			Assertion::true(0 === $size % 8, 'Invalid key size.');
156			$values = array_merge(
157			$values,
158			[
159			'kty' => 'oct',
160			'k' => Base64Url::encode(random_bytes($size / 8)),
161			]
162			);
163
164			return new JWK($values);
165			}
166
167			/**
168			* {@inheritdoc}
169			*/
170			public static function createOKPKey(array $values)
171			{
172			Assertion::keyExists($values, 'crv', 'The curve is not set.');
173			$curve = $values['crv'];
174			switch ($curve) {
175			case 'X25519':
176			Assertion::true(function_exists('curve25519_public'), sprintf('Unsupported "%s" curve', $curve));
177			$d = random_bytes(32);
178			$x = curve25519_public($d);
179			break;
180			case 'Ed25519':
181			Assertion::true(function_exists('ed25519_publickey'), sprintf('Unsupported "%s" curve', $curve));
182			$d = random_bytes(32);
183			$x = ed25519_publickey($d);
184			break;
185			default:
186			throw new \InvalidArgumentException(sprintf('Unsupported "%s" curve', $curve));
187			}
188
189			$values = array_merge(
190			$values,
191			[
192			'kty' => 'OKP',
193			'crv' => $curve,
194			'x' => Base64Url::encode($x),
195			'd' => Base64Url::encode($d),
196			]
197			);
198
199			return new JWK($values);
200			}
201
202			/**
203			* {@inheritdoc}
204			*/
205			public static function createNoneKey(array $values)
206			{
207			$values = array_merge(
208			$values,
209			[
210			'kty' => 'none',
211			'alg' => 'none',
212			'use' => 'sig',
213			]
214			);
215
216			return new JWK($values);
217			}
218
219			/**
220			* @param string $value
221			*
222			* @return string
223			*/
224			private static function encodeValue($value)
225			{
226			$value = gmp_strval($value);
227
228			return Base64Url::encode(self::convertDecToBin($value));
229			}
230
231			/**
232			* @param string $value
233			*
234			* @return string
235			*/
236			private static function convertDecToBin($value)
237			{
238			$adapter = EccFactory::getAdapter();
239
240			return hex2bin($adapter->decHex($value));
241			}
242
243			/**
244			* @param string $curve
245			*
246			* @throws \InvalidArgumentException
247			*
248			* @return string
249			*/
250			private static function getNistName($curve)
251			{
252			switch ($curve) {
253			case 'P-256':
254			return NistCurve::NAME_P256;
255			case 'P-384':
256			return NistCurve::NAME_P384;
257			case 'P-521':
258			return NistCurve::NAME_P521;
259			default:
260			throw new \InvalidArgumentException(sprintf('The curve "%s" is not supported.', $curve));
261			}
262			}
263
264			/**
265			* {@inheritdoc}
266			*/
267			public static function createFromValues(array $values)
268			{
269			if (array_key_exists('keys', $values) && is_array($values['keys'])) {
270			return new JWKSet($values);
271			}
272
273			return new JWK($values);
274			}
275
276			/**
277			* {@inheritdoc}
278			*/
279			public static function createFromCertificateFile($file, array $additional_values = [])
280			{
281			$values = KeyConverter::loadKeyFromCertificateFile($file);
282			$values = array_merge($values, $additional_values);
283
284			return new JWK($values);
285			}
286
287			/**
288			* {@inheritdoc}
289			*/
290			public static function createFromCertificate($certificate, array $additional_values = [])
291			{
292			$values = KeyConverter::loadKeyFromCertificate($certificate);
293			$values = array_merge($values, $additional_values);
294
295			return new JWK($values);
296			}
297
298			/**
299			* {@inheritdoc}
300			*/
301			public static function createFromX509Resource($res, array $additional_values = [])
302			{
303			$values = KeyConverter::loadKeyFromX509Resource($res);
304			$values = array_merge($values, $additional_values);
305
306			return new JWK($values);
307			}
308
309			/**
310			* {@inheritdoc}
311			*/
312			public static function createFromKeyFile($file, $password = null, array $additional_values = [])
313			{
314			$values = KeyConverter::loadFromKeyFile($file, $password);
315			$values = array_merge($values, $additional_values);
316
317			return new JWK($values);
318			}
319
320			/**
321			* {@inheritdoc}
322			*/
323			public static function createFromKey($key, $password = null, array $additional_values = [])
324			{
325			$values = KeyConverter::loadFromKey($key, $password);
326			$values = array_merge($values, $additional_values);
327
328			return new JWK($values);
329			}
330
331			/**
332			* {@inheritdoc}
333			*/
334			public static function createFromJKU($jku, $allow_unsecured_connection = false, CacheItemPoolInterface $cache = null, $ttl = 300)
335			{
336			$content = self::getContent($jku, $allow_unsecured_connection, $cache, $ttl);
337
338			Assertion::keyExists($content, 'keys', 'Invalid content.');
339
340			return new JWKSet($content);
341			}
342
343			/**
344			* {@inheritdoc}
345			*/
346			public static function createFromX5U($x5u, $allow_unsecured_connection = false, CacheItemPoolInterface $cache = null, $ttl = 300)
347			{
348			$content = self::getContent($x5u, $allow_unsecured_connection, $cache, $ttl);
349
350			$jwkset = new JWKSet();
351			foreach ($content as $kid => $cert) {
352			$jwk = KeyConverter::loadKeyFromCertificate($cert);
353			Assertion::notEmpty($jwk, 'Invalid content.');
354			if (is_string($kid)) {
355			$jwk['kid'] = $kid;
356			}
357			$jwkset->addKey(new JWK($jwk));
358			}
359
360			return $jwkset;
361			}
362
363			/**
364			* @param string $url
365			* @param bool $allow_unsecured_connection
366			* @param \Psr\Cache\CacheItemPoolInterface\|null $cache
367			* @param int $ttl
368			*
369			* @return array
370			*/
371			private static function getContent($url, $allow_unsecured_connection, CacheItemPoolInterface $cache = null, $ttl = 300)
372			{
373			$cache_key = sprintf('JWKFactory-Content-%s', hash('sha512', $url));
374			if (null !== $cache) {
375			$item = $cache->getItem($cache_key);
376			if (!$item->isHit()) {
377			$content = self::downloadContent($url, $allow_unsecured_connection);
378			$item->set($content);
379			$item->expiresAfter($ttl);
380			$cache->save($item);
381
382			return $content;
383			} else {
384			return $item->get();
385			}
386			}
387
388			return self::downloadContent($url, $allow_unsecured_connection);
389			}
390
391			/**
392			* {@inheritdoc}
393			*/
394			public static function createFromX5C(array $x5c, array $additional_values = [])
395			{
396			$values = KeyConverter::loadFromX5C($x5c);
397			$values = array_merge($values, $additional_values);
398
399			return new JWK($values);
400			}
401
402			/**
403			* {@inheritdoc}
404			*/
405			public static function createFromKeySet(JWKSetInterface $jwk_set, $key_index)
406			{
407			Assertion::integer($key_index);
408
409			return $jwk_set->getKey($key_index);
410			}
411
412			/**
413			* @param string $url
414			* @param bool $allow_unsecured_connection
415			*
416			* @throws \InvalidArgumentException
417			*
418			* @return array
419			*/
420			private static function downloadContent($url, $allow_unsecured_connection)
421			{
422			// The URL must be a valid URL and scheme must be https
423			Assertion::false(
424			false === filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED \| FILTER_FLAG_HOST_REQUIRED),
425			'Invalid URL.'
426			);
427			Assertion::false(
428			false === $allow_unsecured_connection && 'https://' !== mb_substr($url, 0, 8, '8bit'),
429			'Unsecured connection.'
430			);
431
432			$params = [
433			CURLOPT_RETURNTRANSFER => true,
434			CURLOPT_URL => $url,
435			];
436			if (false === $allow_unsecured_connection) {
437			$params[CURLOPT_SSL_VERIFYPEER] = true;
438			$params[CURLOPT_SSL_VERIFYHOST] = 2;
439			}
440
441			$ch = curl_init();
442			curl_setopt_array($ch, $params);
443			$content = curl_exec($ch);
444			$content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
445			Assertion::eq(1, preg_match('/^application\/json([\s\|;].*)?$/', $content_type), sprintf('Content type is not "application/json". It is "%s".', $content_type));
446			curl_close($ch);
447
448			Assertion::notEmpty($content, 'Unable to get content.');
449			$content = json_decode($content, true);
450			Assertion::isArray($content, 'Invalid content.');
451
452			return $content;
453			}
454			}
455

Spomky-Labs / jose

Pull Request — master (#130)

JWKFactory::createKey() A

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