JWSBuilder::create() - Code Metrics - Inspection of "Helper added and bundle fixed" - Spomky-Labs/jose - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — v7 ( 8da077...12d27f )

by Florent

created 2017-09-24 19:17 UTC

JWSBuilder::create() A

↳ Parent: JWSBuilder

Complexity

Conditions	1
Paths	1

Size

Total Lines	9
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	9
rs	9.6666
c	0
b	0
f	0
cc	1
eloc	6
nc	1
nop	0

<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2017 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Component\Signature;

use Base64Url\Base64Url;
use Jose\Component\Core\Converter\JsonConverterInterface;
use Jose\Component\Core\AlgorithmManager;
use Jose\Component\Core\JWK;
use Jose\Component\Core\Util\KeyChecker;

/**
 * Class JWSBuilder.
 */
final class JWSBuilder
{
    /**
     * @var JsonConverterInterface
     */
    private $jsonConverter;

    /**
     * @var string
     */
    private $payload;

    /**
     * @var bool
     */
    private $isPayloadDetached;

    /**
     * @var array
     */
    private $signatures = [];

    /**
     * @var AlgorithmManager
     */
    private $signatureAlgorithmManager;

    /**
     * @var null|bool
     */
    private $isPayloadEncoded = null;

    /**
     * JWSBuilder constructor.
     *
     * @param JsonConverterInterface $jsonConverter
     * @param AlgorithmManager       $signatureAlgorithmManager
     */
    public function __construct(JsonConverterInterface $jsonConverter, AlgorithmManager $signatureAlgorithmManager)
    {
        $this->jsonConverter = $jsonConverter;
        $this->signatureAlgorithmManager = $signatureAlgorithmManager;
    }

    /**
     * @return string[]
     */
    public function getSupportedSignatureAlgorithms(): array
    {
        return $this->signatureAlgorithmManager->list();
    }

    /**
     * Reset the current data.
     *
     * @return JWSBuilder
     */
    public function create(): JWSBuilder
    {
        $this->payload = null;
        $this->isPayloadDetached = null;
        $this->signatures = [];
        $this->isPayloadEncoded = null;

        return $this;
    }

    /**
     * @param mixed $payload
     * @param bool  $isPayloadDetached
     *
     * @return JWSBuilder
     */
    public function withPayload($payload, bool $isPayloadDetached = false): JWSBuilder
    {
        $payload = is_string($payload) ? $payload : $this->jsonConverter->encode($payload);
        if (false === mb_detect_encoding($payload, 'UTF-8', true)) {
            throw new \InvalidArgumentException('The payload must be encoded in UTF-8');
        }
        $clone = clone $this;
        $clone->payload = $payload;
        $clone->isPayloadDetached = $isPayloadDetached;

        return $clone;
    }

    /**
     * @param JWK   $signatureKey
     * @param array $protectedHeaders
     * @param array $headers
     *
     * @return JWSBuilder
     */
    public function addSignature(JWK $signatureKey, array $protectedHeaders, array $headers = []): JWSBuilder
    {
        $this->checkB64AndCriticalHeader($protectedHeaders);
        $isPayloadEncoded = $this->checkIfPayloadIsEncoded($protectedHeaders);
        if (null === $this->isPayloadEncoded) {
            $this->isPayloadEncoded = $isPayloadEncoded;
        } elseif ($this->isPayloadEncoded !== $isPayloadEncoded) {
            throw new \InvalidArgumentException('Foreign payload encoding detected.');
        }
        $this->checkDuplicatedHeaderParameters($protectedHeaders, $headers);
        KeyChecker::checkKeyUsage($signatureKey, 'signature');
        $signatureAlgorithm = $this->findSignatureAlgorithm($signatureKey, $protectedHeaders, $headers);
        KeyChecker::checkKeyAlgorithm($signatureKey, $signatureAlgorithm->name());
        $clone = clone $this;
        $clone->signatures[] = [
            'signature_algorithm' => $signatureAlgorithm,
            'signature_key' => $signatureKey,
            'protected_headers' => $protectedHeaders,
            'headers' => $headers,
        ];

        return $clone;
    }

    /**
     * @return JWS
     */
    public function build(): JWS
    {
        if (null === $this->payload) {
            throw new \RuntimeException('The payload is not set.');
        }
        if (0 === count($this->signatures)) {
            throw new \RuntimeException('At least one signature must be set.');
        }

        $encodedPayload = false === $this->isPayloadEncoded ? $this->payload : Base64Url::encode($this->payload);
        $jws = JWS::create($this->payload, $encodedPayload, $this->isPayloadDetached);
        foreach ($this->signatures as $signature) {
            /** @var SignatureAlgorithmInterface $signatureAlgorithm */
            $signatureAlgorithm = $signature['signature_algorithm'];
            /** @var JWK $signatureKey */
            $signatureKey = $signature['signature_key'];
            /** @var array $protectedHeaders */
            $protectedHeaders = $signature['protected_headers'];
            /** @var array $headers */
            $headers = $signature['headers'];
            $encodedProtectedHeaders = empty($protectedHeaders) ? null : Base64Url::encode($this->jsonConverter->encode($protectedHeaders));
            $input = sprintf('%s.%s', $encodedProtectedHeaders, $encodedPayload);
            $s = $signatureAlgorithm->sign($signatureKey, $input);
            $jws = $jws->addSignature($s, $protectedHeaders, $encodedProtectedHeaders, $headers);
        }

        return $jws;
    }

    /**
     * @param array $protectedHeaders
     *
     * @return bool
     */
    private function checkIfPayloadIsEncoded(array $protectedHeaders): bool
    {
        return !array_key_exists('b64', $protectedHeaders) || true === $protectedHeaders['b64'];
    }

    /**
     * @param array $protectedHeaders
     */
    private function checkB64AndCriticalHeader(array $protectedHeaders)
    {
        if (!array_key_exists('b64', $protectedHeaders)) {
            return;
        }
        if (!array_key_exists('crit', $protectedHeaders)) {
            throw new \LogicException('The protected header parameter "crit" is mandatory when protected header parameter "b64" is set.');
        }
        if (!is_array($protectedHeaders['crit'])) {
            throw new \LogicException('The protected header parameter "crit" must be an array.');
        }
        if (!in_array('b64', $protectedHeaders['crit'])) {
            throw new \LogicException('The protected header parameter "crit" must contain "b64" when protected header parameter "b64" is set.');
        }
    }

    /**
     * @param array $protectedHeader
     * @param array $headers
     * @param JWK   $key
     *
     * @return SignatureAlgorithmInterface
     */
    private function findSignatureAlgorithm(JWK $key, array $protectedHeader, array $headers): SignatureAlgorithmInterface
    {
        $completeHeader = array_merge($headers, $protectedHeader);
        if (!array_key_exists('alg', $completeHeader)) {
            throw new \InvalidArgumentException('No "alg" parameter set in the header.');
        }
        if ($key->has('alg') && $key->get('alg') !== $completeHeader['alg']) {
            throw new \InvalidArgumentException(sprintf('The algorithm "%s" is not allowed with this key.', $completeHeader['alg']));
        }

        $signatureAlgorithm = $this->signatureAlgorithmManager->get($completeHeader['alg']);
        if (!$signatureAlgorithm instanceof SignatureAlgorithmInterface) {
            throw new \InvalidArgumentException(sprintf('The algorithm "%s" is not supported.', $completeHeader['alg']));
        }

        return $signatureAlgorithm;
    }

    /**
     * @param array $header1
     * @param array $header2
     */
    private function checkDuplicatedHeaderParameters(array $header1, array $header2)
    {
        $inter = array_intersect_key($header1, $header2);
        if (!empty($inter)) {
            throw new \InvalidArgumentException(sprintf('The header contains duplicated entries: %s.', implode(', ', array_keys($inter))));
        }
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			/*
6			* The MIT License (MIT)
7			*
8			* Copyright (c) 2014-2017 Spomky-Labs
9			*
10			* This software may be modified and distributed under the terms
11			* of the MIT license. See the LICENSE file for details.
12			*/
13
14			namespace Jose\Component\Signature;
15
16			use Base64Url\Base64Url;
17			use Jose\Component\Core\Converter\JsonConverterInterface;
18			use Jose\Component\Core\AlgorithmManager;
19			use Jose\Component\Core\JWK;
20			use Jose\Component\Core\Util\KeyChecker;
21
22			/**
23			* Class JWSBuilder.
24			*/
25			final class JWSBuilder
26			{
27			/**
28			* @var JsonConverterInterface
29			*/
30			private $jsonConverter;
31
32			/**
33			* @var string
34			*/
35			private $payload;
36
37			/**
38			* @var bool
39			*/
40			private $isPayloadDetached;
41
42			/**
43			* @var array
44			*/
45			private $signatures = [];
46
47			/**
48			* @var AlgorithmManager
49			*/
50			private $signatureAlgorithmManager;
51
52			/**
53			* @var null\|bool
54			*/
55			private $isPayloadEncoded = null;
56
57			/**
58			* JWSBuilder constructor.
59			*
60			* @param JsonConverterInterface $jsonConverter
61			* @param AlgorithmManager $signatureAlgorithmManager
62			*/
63			public function __construct(JsonConverterInterface $jsonConverter, AlgorithmManager $signatureAlgorithmManager)
64			{
65			$this->jsonConverter = $jsonConverter;
66			$this->signatureAlgorithmManager = $signatureAlgorithmManager;
67			}
68
69			/**
70			* @return string[]
71			*/
72			public function getSupportedSignatureAlgorithms(): array
73			{
74			return $this->signatureAlgorithmManager->list();
75			}
76
77			/**
78			* Reset the current data.
79			*
80			* @return JWSBuilder
81			*/
82			public function create(): JWSBuilder
83			{
84			$this->payload = null;
85			$this->isPayloadDetached = null;
86			$this->signatures = [];
87			$this->isPayloadEncoded = null;
88
89			return $this;
90			}
91
92			/**
93			* @param mixed $payload
94			* @param bool $isPayloadDetached
95			*
96			* @return JWSBuilder
97			*/
98			public function withPayload($payload, bool $isPayloadDetached = false): JWSBuilder
99			{
100			$payload = is_string($payload) ? $payload : $this->jsonConverter->encode($payload);
101			if (false === mb_detect_encoding($payload, 'UTF-8', true)) {
102			throw new \InvalidArgumentException('The payload must be encoded in UTF-8');
103			}
104			$clone = clone $this;
105			$clone->payload = $payload;
106			$clone->isPayloadDetached = $isPayloadDetached;
107
108			return $clone;
109			}
110
111			/**
112			* @param JWK $signatureKey
113			* @param array $protectedHeaders
114			* @param array $headers
115			*
116			* @return JWSBuilder
117			*/
118			public function addSignature(JWK $signatureKey, array $protectedHeaders, array $headers = []): JWSBuilder
119			{
120			$this->checkB64AndCriticalHeader($protectedHeaders);
121			$isPayloadEncoded = $this->checkIfPayloadIsEncoded($protectedHeaders);
122			if (null === $this->isPayloadEncoded) {
123			$this->isPayloadEncoded = $isPayloadEncoded;
124			} elseif ($this->isPayloadEncoded !== $isPayloadEncoded) {
125			throw new \InvalidArgumentException('Foreign payload encoding detected.');
126			}
127			$this->checkDuplicatedHeaderParameters($protectedHeaders, $headers);
128			KeyChecker::checkKeyUsage($signatureKey, 'signature');
129			$signatureAlgorithm = $this->findSignatureAlgorithm($signatureKey, $protectedHeaders, $headers);
130			KeyChecker::checkKeyAlgorithm($signatureKey, $signatureAlgorithm->name());
131			$clone = clone $this;
132			$clone->signatures[] = [
133			'signature_algorithm' => $signatureAlgorithm,
134			'signature_key' => $signatureKey,
135			'protected_headers' => $protectedHeaders,
136			'headers' => $headers,
137			];
138
139			return $clone;
140			}
141
142			/**
143			* @return JWS
144			*/
145			public function build(): JWS
146			{
147			if (null === $this->payload) {
148			throw new \RuntimeException('The payload is not set.');
149			}
150			if (0 === count($this->signatures)) {
151			throw new \RuntimeException('At least one signature must be set.');
152			}
153
154			$encodedPayload = false === $this->isPayloadEncoded ? $this->payload : Base64Url::encode($this->payload);
155			$jws = JWS::create($this->payload, $encodedPayload, $this->isPayloadDetached);
156			foreach ($this->signatures as $signature) {
157			/** @var SignatureAlgorithmInterface $signatureAlgorithm */
158			$signatureAlgorithm = $signature['signature_algorithm'];
159			/** @var JWK $signatureKey */
160			$signatureKey = $signature['signature_key'];
161			/** @var array $protectedHeaders */
162			$protectedHeaders = $signature['protected_headers'];
163			/** @var array $headers */
164			$headers = $signature['headers'];
165			$encodedProtectedHeaders = empty($protectedHeaders) ? null : Base64Url::encode($this->jsonConverter->encode($protectedHeaders));
166			$input = sprintf('%s.%s', $encodedProtectedHeaders, $encodedPayload);
167			$s = $signatureAlgorithm->sign($signatureKey, $input);
168			$jws = $jws->addSignature($s, $protectedHeaders, $encodedProtectedHeaders, $headers);
169			}
170
171			return $jws;
172			}
173
174			/**
175			* @param array $protectedHeaders
176			*
177			* @return bool
178			*/
179			private function checkIfPayloadIsEncoded(array $protectedHeaders): bool
180			{
181			return !array_key_exists('b64', $protectedHeaders) \|\| true === $protectedHeaders['b64'];
182			}
183
184			/**
185			* @param array $protectedHeaders
186			*/
187			private function checkB64AndCriticalHeader(array $protectedHeaders)
188			{
189			if (!array_key_exists('b64', $protectedHeaders)) {
190			return;
191			}
192			if (!array_key_exists('crit', $protectedHeaders)) {
193			throw new \LogicException('The protected header parameter "crit" is mandatory when protected header parameter "b64" is set.');
194			}
195			if (!is_array($protectedHeaders['crit'])) {
196			throw new \LogicException('The protected header parameter "crit" must be an array.');
197			}
198			if (!in_array('b64', $protectedHeaders['crit'])) {
199			throw new \LogicException('The protected header parameter "crit" must contain "b64" when protected header parameter "b64" is set.');
200			}
201			}
202
203			/**
204			* @param array $protectedHeader
205			* @param array $headers
206			* @param JWK $key
207			*
208			* @return SignatureAlgorithmInterface
209			*/
210			private function findSignatureAlgorithm(JWK $key, array $protectedHeader, array $headers): SignatureAlgorithmInterface
211			{
212			$completeHeader = array_merge($headers, $protectedHeader);
213			if (!array_key_exists('alg', $completeHeader)) {
214			throw new \InvalidArgumentException('No "alg" parameter set in the header.');
215			}
216			if ($key->has('alg') && $key->get('alg') !== $completeHeader['alg']) {
217			throw new \InvalidArgumentException(sprintf('The algorithm "%s" is not allowed with this key.', $completeHeader['alg']));
218			}
219
220			$signatureAlgorithm = $this->signatureAlgorithmManager->get($completeHeader['alg']);
221			if (!$signatureAlgorithm instanceof SignatureAlgorithmInterface) {
222			throw new \InvalidArgumentException(sprintf('The algorithm "%s" is not supported.', $completeHeader['alg']));
223			}
224
225			return $signatureAlgorithm;
226			}
227
228			/**
229			* @param array $header1
230			* @param array $header2
231			*/
232			private function checkDuplicatedHeaderParameters(array $header1, array $header2)
233			{
234			$inter = array_intersect_key($header1, $header2);
235			if (!empty($inter)) {
236			throw new \InvalidArgumentException(sprintf('The header contains duplicated entries: %s.', implode(', ', array_keys($inter))));
237			}
238			}
239			}
240

Spomky-Labs / jose

Push — v7 ( 8da077...12d27f )

JWSBuilder::create() A

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