Binding::getCurrentBinding() - Code Metrics - simplesamlphp/saml2 - Measure and Improve Code Quality continuously with Scrutinizer

Binding::getCurrentBinding() C
last analyzed 2025-09-29 21:42 UTC

↳ Parent: Binding

Complexity

Conditions	16
Paths	24

Size

Total Lines	59
Code Lines	36

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	16
eloc	36
nc	24
nop	1
dl	0
loc	59
rs	5.5666
c	0
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\Binding\HTTPArtifact;
use SimpleSAML\SAML2\Binding\HTTPPost;
use SimpleSAML\SAML2\Binding\HTTPRedirect;
use SimpleSAML\SAML2\Binding\SOAP;
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 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 Binding\HTTPRedirect();
                } elseif (array_key_exists('SAMLart', $query)) {
                    return new Binding\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 Binding\HTTPPost();
                } elseif (array_key_exists('SAMLart', $query)) {
                    return new Binding\HTTPArtifact();
                } else {
                    /**
                     * The registration information for text/xml is in all respects the same
                     * as that given for application/xml (RFC 7303 - Section 9.1)
                     */
                    if (
                        ($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 Binding\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;
    }


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

simplesamlphp / saml2

Binding::getCurrentBinding() C last analyzed 2025-09-29 21:42 UTC

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Binding::getCurrentBinding() C
last analyzed 2025-09-29 21:42 UTC