WebAuthn::__construct() - Code Metrics - Inspection of "Merge pull request #28 from oernst9/master" - simplesamlphp/simplesamlphp-module-webauthn - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e6d62d...86a9dc )

by Stefan

created 2020-02-12 10:58 UTC

WebAuthn::__construct() F

↳ Parent: WebAuthn

Complexity

Conditions	12
Paths	528

Size

Total Lines	70
Code Lines	44

Duplication

Lines	0
Ratio	0 %

Importance

Changes	6
Bugs	1	Features	0

Metric	Value
cc	12
eloc	44
c	6
b	1
f	0
nc	528
nop	2
dl	0
loc	70
rs	3.4555

How to fix Long Method Complexity

<?php

/**
 * FIDO2/WebAuthn Authentication Processing filter
 *
 * Filter for registering or authenticating with a FIDO2/WebAuthn token after
 * having authenticated with the primary authsource.
 *
 * @author Stefan Winter <[email protected]>
 * @package SimpleSAMLphp
 */

namespace SimpleSAML\Module\webauthn\Auth\Process;

use SimpleSAML\Auth;
use SimpleSAML\Error;
use SimpleSAML\Logger;
use SimpleSAML\Module;
use SimpleSAML\Module\webauthn\Store;
use SimpleSAML\Utils;

class WebAuthn extends Auth\ProcessingFilter
{
    /**
     * backend storage configuration. Required.
     *
     * @var \SimpleSAML\Module\webauthn\Store
     */
    private $store;

    /**
     * Scope of the FIDO2 attestation. Can only be in the own domain.
     *
     * @var string|null
     */
    private $scope = null;

    /**
     * The scope derived from the SimpleSAMLphp configuration;
     * can be null due to misconfiguration, in case we cannot warn the administrator on a mismatching scope
     *
     * @var string|null
     */
    private $derivedScope = null;

    /**
     * attribute to use as username for the FIDO2 attestation.
     *
     * @var string
     */
    private $usernameAttrib;

    /**
     * attribute to use as display name for the FIDO2 attestation.
     *
     * @var string
     */
    private $displaynameAttrib;

    /**
     * @var boolean
     */
    private $requestTokenModel;

    /**
     * @var boolean should new users be considered as enabled by default?
     */
    private $defaultEnabled;

    /**
     * @var boolean switch that determines how $toggle will be used, if true then value of $toggle
     *              will mean whether to trigger (true) or not (false) the webauthn authentication,
     *              if false then $toggle means whether to switch the value of $defaultEnabled and then use that
     */
    private $force;

    /**
     * @var string an attribute which is associated with $force because it determines its meaning,
     *              it either simply means whether to trigger webauthn authentication or switch the default settings,
     *              if null (was not sent as attribute) then the information from database is used
     */
    private $toggleAttrib;

    /**
     * @var bool a bool that determines whether to use local database or not
     */
    private $useDatabase;

    /**
     * @var string|null AuthnContextClassRef
     */
    private $authnContextClassRef = null;

    /**
     * Initialize filter.
     *
     * Validates and parses the configuration.
     *
     * @param array $config Configuration information.
     * @param mixed $reserved For future use.
     *
     * @throws \SimpleSAML\Error\Exception if the configuration is not valid.
     */
    public function __construct($config, $reserved)
    {
        /**
         * Remove annotation + assert as soon as this method can be typehinted (SSP 2.0)
         * @psalm-suppress RedundantConditionGivenDocblockType
         */
        assert(is_array($config));
        parent::__construct($config, $reserved);

        try {
            $this->store = Store::parseStoreConfig($config['store']);
        } catch (\Exception $e) {
            Logger::error(
                'webauthn: Could not create storage: ' .
                $e->getMessage()
            );
        }

        // Set the optional scope if set by configuration
        if (array_key_exists('scope', $config)) {
            $this->scope = $config['scope'];
        }

        // Set the derived scope so we can compare it to the sent host at a later point
        $baseurl = Utils\HTTP::getSelfHost();
        $hostname = parse_url($baseurl, PHP_URL_HOST);
        if ($hostname !== null) {
            $this->derivedScope = $hostname;
        }

        if (array_key_exists('attrib_username', $config)) {
            $this->usernameAttrib = $config['attrib_username'];
        } else {
            throw new Error\CriticalConfigurationError('webauthn: it is required to set attrib_username in config.');
        }

        if (array_key_exists('attrib_displayname', $config)) {
            $this->displaynameAttrib = $config['attrib_displayname'];
        } else {
            throw new Error\CriticalConfigurationError('webauthn: it is required to set attrib_displayname in config.');
        }

        if (array_key_exists('request_tokenmodel', $config)) {
            $this->requestTokenModel = $config['request_tokenmodel'];
        } else {
            $this->requestTokenModel = false;
        }
        if (array_key_exists('default_enable', $config)) {
            $this->defaultEnabled = $config['default_enable'];
        } else {
            $this->defaultEnabled = false;
        }

        if (array_key_exists('force', $config)) {
            $this->force = $config['force'];
        } else {
            $this->force = true;
        }
        if (array_key_exists('attrib_toggle', $config)) {
            $this->toggleAttrib = $config['attrib_toggle'];
        } else {
            $this->toggleAttrib = 'toggle';
        }
        if (array_key_exists('use_database', $config)) {
            $this->useDatabase = $config['use_database'];
        } else {
            $this->useDatabase = true;
        }
        if (array_key_exists('authnContextClassRef', $config)) {
            $this->authnContextClassRef = $config['authnContextClassRef'];

        }
    }

    /**
     * Process a authentication response
     *
     * This function saves the state, and redirects the user to the page where
     * the user can register or authenticate with his token.
     *
     * @param array &$state The state of the response.
     *
     * @return void
     */
    public function process(&$state)
    {
        /**
         * Remove annotation + assert as soon as this method can be typehinted (SSP 2.0)
         * @psalm-suppress RedundantConditionGivenDocblockType
         */
        assert(is_array($state));
        assert(array_key_exists('UserID', $state));
        assert(array_key_exists('Destination', $state));
        assert(array_key_exists('entityid', $state['Destination']));
        assert(array_key_exists('metadata-set', $state['Destination']));
        assert(array_key_exists('entityid', $state['Source']));
        assert(array_key_exists('metadata-set', $state['Source']));

        if (!array_key_exists($this->usernameAttrib, $state['Attributes'])) {
            Logger::warning('webauthn: cannot determine if user needs second factor, missing attribute "' .
                $this->usernameAttrib . '".');
            return;
        }

        $state['requestTokenModel'] = $this->requestTokenModel;
        $state['webauthn:store'] = $this->store;
        $state['saml:AuthnContextClassRef'] = $this->authnContextClassRef ?? 'urn:rsa:names:tc:SAML:2.0:ac:classes:FIDO';

        Logger::debug('webauthn: userid: ' . $state['Attributes'][$this->usernameAttrib][0]);

        $localToggle = !empty($state['Attributes'][$this->toggleAttrib])
            && !empty($state['Attributes'][$this->toggleAttrib][0]);

        if (
            $this->store->is2FAEnabled(
                $state['Attributes'][$this->usernameAttrib][0],
                $this->defaultEnabled,
                $this->useDatabase,
                $localToggle,
                $this->force
            ) === false
        ) {
            // nothing to be done here, end authprocfilter processing
            return;
        }

        $state['FIDO2Tokens'] = $this->store->getTokenData($state['Attributes'][$this->usernameAttrib][0]);
        $state['FIDO2Scope'] = $this->scope;
        $state['FIDO2DerivedScope'] = $this->derivedScope;
        $state['FIDO2Username'] = $state['Attributes'][$this->usernameAttrib][0];
        $state['FIDO2Displayname'] = $state['Attributes'][$this->displaynameAttrib][0];
        $state['FIDO2SignupChallenge'] = hash('sha512', random_bytes(64));
        $state['FIDO2WantsRegister'] = false;
        $state['FIDO2AuthSuccessful'] = false;

        // Save state and redirect
        $id = Auth\State::saveState($state, 'webauthn:request');
        $url = Module::getModuleURL('webauthn/webauthn.php');
        Utils\HTTP::redirectTrustedURL($url, ['StateId' => $id]);
    }
}


1			<?php
2
3			/**
4			* FIDO2/WebAuthn Authentication Processing filter
5			*
6			* Filter for registering or authenticating with a FIDO2/WebAuthn token after
7			* having authenticated with the primary authsource.
8			*
9			* @author Stefan Winter <[email protected]>
10			* @package SimpleSAMLphp
11			*/
12
13			namespace SimpleSAML\Module\webauthn\Auth\Process;
14
15			use SimpleSAML\Auth;
16			use SimpleSAML\Error;
17			use SimpleSAML\Logger;
18			use SimpleSAML\Module;
19			use SimpleSAML\Module\webauthn\Store;
20			use SimpleSAML\Utils;
21
22			class WebAuthn extends Auth\ProcessingFilter
23			{
24			/**
25			* backend storage configuration. Required.
26			*
27			* @var \SimpleSAML\Module\webauthn\Store
28			*/
29			private $store;
30
31			/**
32			* Scope of the FIDO2 attestation. Can only be in the own domain.
33			*
34			* @var string\|null
35			*/
36			private $scope = null;
37
38			/**
39			* The scope derived from the SimpleSAMLphp configuration;
40			* can be null due to misconfiguration, in case we cannot warn the administrator on a mismatching scope
41			*
42			* @var string\|null
43			*/
44			private $derivedScope = null;
45
46			/**
47			* attribute to use as username for the FIDO2 attestation.
48			*
49			* @var string
50			*/
51			private $usernameAttrib;
52
53			/**
54			* attribute to use as display name for the FIDO2 attestation.
55			*
56			* @var string
57			*/
58			private $displaynameAttrib;
59
60			/**
61			* @var boolean
62			*/
63			private $requestTokenModel;
64
65			/**
66			* @var boolean should new users be considered as enabled by default?
67			*/
68			private $defaultEnabled;
69
70			/**
71			* @var boolean switch that determines how $toggle will be used, if true then value of $toggle
72			* will mean whether to trigger (true) or not (false) the webauthn authentication,
73			* if false then $toggle means whether to switch the value of $defaultEnabled and then use that
74			*/
75			private $force;
76
77			/**
78			* @var string an attribute which is associated with $force because it determines its meaning,
79			* it either simply means whether to trigger webauthn authentication or switch the default settings,
80			* if null (was not sent as attribute) then the information from database is used
81			*/
82			private $toggleAttrib;
83
84			/**
85			* @var bool a bool that determines whether to use local database or not
86			*/
87			private $useDatabase;
88
89			/**
90			* @var string\|null AuthnContextClassRef
91			*/
92			private $authnContextClassRef = null;
93
94			/**
95			* Initialize filter.
96			*
97			* Validates and parses the configuration.
98			*
99			* @param array $config Configuration information.
100			* @param mixed $reserved For future use.
101			*
102			* @throws \SimpleSAML\Error\Exception if the configuration is not valid.
103			*/
104			public function __construct($config, $reserved)
105			{
106			/**
107			* Remove annotation + assert as soon as this method can be typehinted (SSP 2.0)
108			* @psalm-suppress RedundantConditionGivenDocblockType
109			*/
110			assert(is_array($config));
111			parent::__construct($config, $reserved);
112
113			try {
114			$this->store = Store::parseStoreConfig($config['store']);
115			} catch (\Exception $e) {
116			Logger::error(
117			'webauthn: Could not create storage: ' .
118			$e->getMessage()
119			);
120			}
121
122			// Set the optional scope if set by configuration
123			if (array_key_exists('scope', $config)) {
124			$this->scope = $config['scope'];
125			}
126
127			// Set the derived scope so we can compare it to the sent host at a later point
128			$baseurl = Utils\HTTP::getSelfHost();
129			$hostname = parse_url($baseurl, PHP_URL_HOST);
130			if ($hostname !== null) {
131			$this->derivedScope = $hostname;
132			}
133
134			if (array_key_exists('attrib_username', $config)) {
135			$this->usernameAttrib = $config['attrib_username'];
136			} else {
137			throw new Error\CriticalConfigurationError('webauthn: it is required to set attrib_username in config.');
138			}
139
140			if (array_key_exists('attrib_displayname', $config)) {
141			$this->displaynameAttrib = $config['attrib_displayname'];
142			} else {
143			throw new Error\CriticalConfigurationError('webauthn: it is required to set attrib_displayname in config.');
144			}
145
146			if (array_key_exists('request_tokenmodel', $config)) {
147			$this->requestTokenModel = $config['request_tokenmodel'];
148			} else {
149			$this->requestTokenModel = false;
150			}
151			if (array_key_exists('default_enable', $config)) {
152			$this->defaultEnabled = $config['default_enable'];
153			} else {
154			$this->defaultEnabled = false;
155			}
156
157			if (array_key_exists('force', $config)) {
158			$this->force = $config['force'];
159			} else {
160			$this->force = true;
161			}
162			if (array_key_exists('attrib_toggle', $config)) {
163			$this->toggleAttrib = $config['attrib_toggle'];
164			} else {
165			$this->toggleAttrib = 'toggle';
166			}
167			if (array_key_exists('use_database', $config)) {
168			$this->useDatabase = $config['use_database'];
169			} else {
170			$this->useDatabase = true;
171			}
172			if (array_key_exists('authnContextClassRef', $config)) {
173			$this->authnContextClassRef = $config['authnContextClassRef'];
174
175			}
176			}
177
178			/**
179			* Process a authentication response
180			*
181			* This function saves the state, and redirects the user to the page where
182			* the user can register or authenticate with his token.
183			*
184			* @param array &$state The state of the response.
185			*
186			* @return void
187			*/
188			public function process(&$state)
189			{
190			/**
191			* Remove annotation + assert as soon as this method can be typehinted (SSP 2.0)
192			* @psalm-suppress RedundantConditionGivenDocblockType
193			*/
194			assert(is_array($state));
195			assert(array_key_exists('UserID', $state));
196			assert(array_key_exists('Destination', $state));
197			assert(array_key_exists('entityid', $state['Destination']));
198			assert(array_key_exists('metadata-set', $state['Destination']));
199			assert(array_key_exists('entityid', $state['Source']));
200			assert(array_key_exists('metadata-set', $state['Source']));
201
202			if (!array_key_exists($this->usernameAttrib, $state['Attributes'])) {
203			Logger::warning('webauthn: cannot determine if user needs second factor, missing attribute "' .
204			$this->usernameAttrib . '".');
205			return;
206			}
207
208			$state['requestTokenModel'] = $this->requestTokenModel;
209			$state['webauthn:store'] = $this->store;
210			$state['saml:AuthnContextClassRef'] = $this->authnContextClassRef ?? 'urn:rsa:names:tc:SAML:2.0:ac:classes:FIDO';
211
212			Logger::debug('webauthn: userid: ' . $state['Attributes'][$this->usernameAttrib][0]);
213
214			$localToggle = !empty($state['Attributes'][$this->toggleAttrib])
215			&& !empty($state['Attributes'][$this->toggleAttrib][0]);
216
217			if (
218			$this->store->is2FAEnabled(
219			$state['Attributes'][$this->usernameAttrib][0],
220			$this->defaultEnabled,
221			$this->useDatabase,
222			$localToggle,
223			$this->force
224			) === false
225			) {
226			// nothing to be done here, end authprocfilter processing
227			return;
228			}
229
230			$state['FIDO2Tokens'] = $this->store->getTokenData($state['Attributes'][$this->usernameAttrib][0]);
231			$state['FIDO2Scope'] = $this->scope;
232			$state['FIDO2DerivedScope'] = $this->derivedScope;
233			$state['FIDO2Username'] = $state['Attributes'][$this->usernameAttrib][0];
234			$state['FIDO2Displayname'] = $state['Attributes'][$this->displaynameAttrib][0];
235			$state['FIDO2SignupChallenge'] = hash('sha512', random_bytes(64));
236			$state['FIDO2WantsRegister'] = false;
237			$state['FIDO2AuthSuccessful'] = false;
238
239			// Save state and redirect
240			$id = Auth\State::saveState($state, 'webauthn:request');
241			$url = Module::getModuleURL('webauthn/webauthn.php');
242			Utils\HTTP::redirectTrustedURL($url, ['StateId' => $id]);
243			}
244			}
245

simplesamlphp / simplesamlphp-module-webauthn

Push — master ( e6d62d...86a9dc )

WebAuthn::__construct() F

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