Binding::getCurrentBinding() - Code Metrics - Inspection of "Move RelayState; it's a characteristic of the bind..." - simplesamlphp/saml2 - Measure and Improve Code Quality continuously with Scrutinizer

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by Tim

created 2024-05-10 14:30 UTC

Binding::getCurrentBinding() C

↳ Parent: Binding

Complexity

Conditions	16
Paths	24

Size

Total Lines	59
Code Lines	36

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	16
eloc	36
nc	24
nop	1
dl	0
loc	59
rs	5.5666
c	1
b	0
f	0

How to fix Long Method Complexity

<?php

declare(strict_types=1);

namespace SimpleSAML\SAML2;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use SimpleSAML\SAML2\Constants as C;
use SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException;
use SimpleSAML\SAML2\XML\samlp\AbstractMessage;

use function array_key_exists;
use function array_keys;
use function array_map;
use function explode;
use function implode;
use function var_export;

/**
 * Base class for SAML 2 bindings.
 *
 * @package simplesamlphp/saml2
 */
abstract class Binding
{
    /**
     * The RelayState associated with the message.
     *
     * @var string|null
     */
    protected ?string $relayState = null;

    /**
     * The destination of messages.
     *
     * This can be null, in which case the destination in the message is used.
     * @var string|null
     */
    protected ?string $destination = null;


    /**
     * Retrieve a binding with the given URN.
     *
     * Will throw an exception if it is unable to locate the binding.
     *
     * @param string $urn The URN of the binding.
     * @throws \SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException
     * @return \SimpleSAML\SAML2\Binding The binding.
     */
    public static function getBinding(string $urn): Binding
    {
        switch ($urn) {
            case C::BINDING_HTTP_POST:
            case C::BINDING_HOK_SSO:
                return new HTTPPost();
            case C::BINDING_HTTP_REDIRECT:
                return new HTTPRedirect();
            case C::BINDING_HTTP_ARTIFACT:
                return new HTTPArtifact();
            // ECP ACS is defined with the PAOS binding, but as the IdP, we
            // talk to the ECP using SOAP -- if support for ECP as an SP is
            // implemented, this logic may need to change
            case C::BINDING_PAOS:
                return new SOAP();
            default:
                throw new UnsupportedBindingException('Unsupported binding: ' . var_export($urn, true));
        }
    }


    /**
     * Guess the current binding.
     *
     * This function guesses the current binding and creates an instance
     * of \SimpleSAML\SAML2\Binding matching that binding.
     *
     * An exception will be thrown if it is unable to guess the binding.
     *
     * @param \Psr\Http\Message\ServerRequestInterface $request
     * @throws \SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException
     * @return \SimpleSAML\SAML2\Binding The binding.
     */
    public static function getCurrentBinding(ServerRequestInterface $request): Binding
    {
        $method = $request->getMethod();

        switch ($method) {
            case 'GET':
                $query = $request->getQueryParams();
                if (array_key_exists('SAMLRequest', $query) || array_key_exists('SAMLResponse', $query)) {
                    return new HTTPRedirect();
                } elseif (array_key_exists('SAMLart', $query)) {
                    return new HTTPArtifact();
                }
                break;

            case 'POST':
                $contentType = null;
                if ($request->hasHeader('Content-Type')) {
                    $contentType = $request->getHeader('Content-Type')[0];
                    $contentType = explode(';', $contentType);
                    $contentType = $contentType[0]; /* Remove charset. */
                }

                $query = $request->getParsedBody();
                if (array_key_exists('SAMLRequest', $query) || array_key_exists('SAMLResponse', $query)) {
                    return new HTTPPost();
                } elseif (array_key_exists('SAMLart', $query)) {
                    return new HTTPArtifact();
                } else {
                    /**
                     * The registration information for text/xml is in all respects the same
                     * as that given for application/xml (RFC 7303 - Section 9.1)
                     */
                    if (
                        ($contentType === 'text/xml' || $contentType === 'application/xml')
                        // See paragraph 3.2.3 of Binding for SAML2 (OASIS)
                        || ($request->hasHeader('SOAPAction')
                            && $request->getHeader('SOAPAction')[0] === 'http://www.oasis-open.org/committees/security')
                    ) {
                        return new SOAP();
                    }
                }
                break;
        }

        $logger = Utils::getContainer()->getLogger();
        $logger->warning('Unable to find the SAML 2 binding used for this request.');
        $logger->warning('Request method: ' . var_export($method, true));

        if (!empty($query)) {
            $logger->warning(
                $method . " parameters: '" . implode("', '", array_map('addslashes', array_keys($query))) . "'"
            );
        }

        if ($request->hasHeader('Content-Type')) {
            $logger->warning('Content-Type: ' . var_export($request->getHeader('Content-Type')[0], true));
        }

        throw new UnsupportedBindingException('Unable to find the SAML 2 binding used for this request.');
    }


    /**
     * Retrieve the destination of a message.
     *
     * @return string|null $destination The destination the message will be delivered to.
     */
    public function getDestination(): ?string
    {
        return $this->destination;
    }


    /**
     * Set the RelayState associated with he message.
     *
     * @param string|null $relayState The RelayState.
     */
    public function setRelayState(string $relayState = null): void
    {
        $this->relayState = $relayState;
    }


    /**
     * Get the RelayState associated with the message.
     *
     * @return string|null The RelayState.
     */
    public function getRelayState(): ?string
    {
        return $this->relayState;
    }


    /**
     * Override the destination of a message.
     *
     * Set to null to use the destination set in the message.
     *
     * @param string|null $destination The destination the message should be delivered to.
     */
    public function setDestination(string $destination = null): void
    {
        $this->destination = $destination;
    }


    /**
     * Send a SAML 2 message.
     *
     * This function will send a message using the specified binding.
     * The message will be delivered to the destination set in the message.
     *
     * @param \SimpleSAML\SAML2\XML\samlp\AbstractMessage $message The message which should be sent.
     * @return \Psr\Http\Message\ResponseInterface
     */
    abstract public function send(AbstractMessage $message): ResponseInterface;


    /**
     * Receive a SAML 2 message.
     *
     * This function will extract the message from the current request.
     * An exception will be thrown if we are unable to process the message.
     *
     * @param \Psr\Http\Message\ServerRequestInterface $request
     * @return \SimpleSAML\SAML2\XML\samlp\AbstractMessage The received message.
     */
    abstract public function receive(ServerRequestInterface $request): AbstractMessage;
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace SimpleSAML\SAML2;
6
7			use Psr\Http\Message\ResponseInterface;
8			use Psr\Http\Message\ServerRequestInterface;
9			use SimpleSAML\SAML2\Constants as C;
10			use SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException;
11			use SimpleSAML\SAML2\XML\samlp\AbstractMessage;
12
13			use function array_key_exists;
14			use function array_keys;
15			use function array_map;
16			use function explode;
17			use function implode;
18			use function var_export;
19
20			/**
21			* Base class for SAML 2 bindings.
22			*
23			* @package simplesamlphp/saml2
24			*/
25			abstract class Binding
26			{
27			/**
28			* The RelayState associated with the message.
29			*
30			* @var string\|null
31			*/
32			protected ?string $relayState = null;
33
34			/**
35			* The destination of messages.
36			*
37			* This can be null, in which case the destination in the message is used.
38			* @var string\|null
39			*/
40			protected ?string $destination = null;
41
42
43			/**
44			* Retrieve a binding with the given URN.
45			*
46			* Will throw an exception if it is unable to locate the binding.
47			*
48			* @param string $urn The URN of the binding.
49			* @throws \SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException
50			* @return \SimpleSAML\SAML2\Binding The binding.
51			*/
52			public static function getBinding(string $urn): Binding
53			{
54			switch ($urn) {
55			case C::BINDING_HTTP_POST:
56			case C::BINDING_HOK_SSO:
57			return new HTTPPost();
58			case C::BINDING_HTTP_REDIRECT:
59			return new HTTPRedirect();
60			case C::BINDING_HTTP_ARTIFACT:
61			return new HTTPArtifact();
62			// ECP ACS is defined with the PAOS binding, but as the IdP, we
63			// talk to the ECP using SOAP -- if support for ECP as an SP is
64			// implemented, this logic may need to change
65			case C::BINDING_PAOS:
66			return new SOAP();
67			default:
68			throw new UnsupportedBindingException('Unsupported binding: ' . var_export($urn, true));
69			}
70			}
71
72
73			/**
74			* Guess the current binding.
75			*
76			* This function guesses the current binding and creates an instance
77			* of \SimpleSAML\SAML2\Binding matching that binding.
78			*
79			* An exception will be thrown if it is unable to guess the binding.
80			*
81			* @param \Psr\Http\Message\ServerRequestInterface $request
82			* @throws \SimpleSAML\SAML2\Exception\Protocol\UnsupportedBindingException
83			* @return \SimpleSAML\SAML2\Binding The binding.
84			*/
85			public static function getCurrentBinding(ServerRequestInterface $request): Binding
86			{
87			$method = $request->getMethod();
88
89			switch ($method) {
90			case 'GET':
91			$query = $request->getQueryParams();
92			if (array_key_exists('SAMLRequest', $query) \|\| array_key_exists('SAMLResponse', $query)) {
93			return new HTTPRedirect();
94			} elseif (array_key_exists('SAMLart', $query)) {
95			return new HTTPArtifact();
96			}
97			break;
98
99			case 'POST':
100			$contentType = null;
101			if ($request->hasHeader('Content-Type')) {
102			$contentType = $request->getHeader('Content-Type')[0];
103			$contentType = explode(';', $contentType);
104			$contentType = $contentType[0]; /* Remove charset. */
105			}
106
107			$query = $request->getParsedBody();
108			if (array_key_exists('SAMLRequest', $query) \|\| array_key_exists('SAMLResponse', $query)) {
109			return new HTTPPost();
110			} elseif (array_key_exists('SAMLart', $query)) {
111			return new HTTPArtifact();
112			} else {
113			/**
114			* The registration information for text/xml is in all respects the same
115			* as that given for application/xml (RFC 7303 - Section 9.1)
116			*/
117			if (
118			($contentType === 'text/xml' \|\| $contentType === 'application/xml')
119			// See paragraph 3.2.3 of Binding for SAML2 (OASIS)
120			\|\| ($request->hasHeader('SOAPAction')
121			&& $request->getHeader('SOAPAction')[0] === 'http://www.oasis-open.org/committees/security')
122			) {
123			return new SOAP();
124			}
125			}
126			break;
127			}
128
129			$logger = Utils::getContainer()->getLogger();
130			$logger->warning('Unable to find the SAML 2 binding used for this request.');
131			$logger->warning('Request method: ' . var_export($method, true));
132
133			if (!empty($query)) {
134			$logger->warning(
135			$method . " parameters: '" . implode("', '", array_map('addslashes', array_keys($query))) . "'"
136			);
137			}
138
139			if ($request->hasHeader('Content-Type')) {
140			$logger->warning('Content-Type: ' . var_export($request->getHeader('Content-Type')[0], true));
141			}
142
143			throw new UnsupportedBindingException('Unable to find the SAML 2 binding used for this request.');
144			}
145
146
147			/**
148			* Retrieve the destination of a message.
149			*
150			* @return string\|null $destination The destination the message will be delivered to.
151			*/
152			public function getDestination(): ?string
153			{
154			return $this->destination;
155			}
156
157
158			/**
159			* Set the RelayState associated with he message.
160			*
161			* @param string\|null $relayState The RelayState.
162			*/
163			public function setRelayState(string $relayState = null): void
164			{
165			$this->relayState = $relayState;
166			}
167
168
169			/**
170			* Get the RelayState associated with the message.
171			*
172			* @return string\|null The RelayState.
173			*/
174			public function getRelayState(): ?string
175			{
176			return $this->relayState;
177			}
178
179
180			/**
181			* Override the destination of a message.
182			*
183			* Set to null to use the destination set in the message.
184			*
185			* @param string\|null $destination The destination the message should be delivered to.
186			*/
187			public function setDestination(string $destination = null): void
188			{
189			$this->destination = $destination;
190			}
191
192
193			/**
194			* Send a SAML 2 message.
195			*
196			* This function will send a message using the specified binding.
197			* The message will be delivered to the destination set in the message.
198			*
199			* @param \SimpleSAML\SAML2\XML\samlp\AbstractMessage $message The message which should be sent.
200			* @return \Psr\Http\Message\ResponseInterface
201			*/
202			abstract public function send(AbstractMessage $message): ResponseInterface;
203
204
205			/**
206			* Receive a SAML 2 message.
207			*
208			* This function will extract the message from the current request.
209			* An exception will be thrown if we are unable to process the message.
210			*
211			* @param \Psr\Http\Message\ServerRequestInterface $request
212			* @return \SimpleSAML\SAML2\XML\samlp\AbstractMessage The received message.
213			*/
214			abstract public function receive(ServerRequestInterface $request): AbstractMessage;
215			}
216

simplesamlphp / saml2

Push — master ( b3f66f...fee7a6 )

Binding::getCurrentBinding() C

Complexity

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Duplication

Importance

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